CN101665667B

CN101665667B - Adhesive tape and use thereof

Info

Publication number: CN101665667B
Application number: CN 200910145344
Authority: CN
Inventors: 克斯廷·戈茨; 斯蒂芬·伍尔夫; 克里斯托弗·内格尔
Original assignee: Tesa SE
Current assignee: Tesa SE
Priority date: 2008-06-03
Filing date: 2009-06-03
Publication date: 2013-06-12
Anticipated expiration: 2029-06-03
Also published as: CN101665667A; CN101597464A; CN101597464B

Abstract

The present invention relates to an adhesive tape for high-speed bonding, a method for connecting two flat webs during the high-speed bonding of the rolled flat webs, and a winding drum containing the adhesive tape.

Description

Adhesive tape and uses thereof

Technical field

The present invention relates to the bonding adhesive tape of high speed of the open width material (flat web) for coiling, and the method for online high speed bonding (on-the-fly splicing) that also relates to the open width material of coiling.

Background technology

At processing open width material when (paper, film, non-woven fabrics etc.), high speed is bonding is to replace the volume of old almost completely unwinding and the common methods of the machine that do not need for this reason to stop to run up with new volume (roll).In the process of this online high speed change of lap (on-the-fly roll change), usually use (pressure-sensitive) adhesive tape, with the end of joint (or bonding) old width and the start-up portion of new width.

For many years, known in this respect some adhesive tapes with form of straight lines be adhered to the top of the new volume the superiors or below, and merge thus the function of rolling (roll closure) and the function of jointing tape (this adhesive tape engages new open width (being more specifically paper web) and the old open width that is about to use up) in a band.

In bonding operation, rolling need to be opened wide so that new open width adheres to the end of the open width that is about to use up, and after bonding operation, with continuous operation mode, new open width is hauled out from new volume (run off).

US 5,323, and 981 have disclosed a kind of double sticky tape, in its outside, have the highly tacky adhesive bonding for high speed.Be furnished with two kinds of tackiness agents at its back side, preferably there is the zone (zone) of adhesive-free between tackiness agent.In this arranges, the tackiness agent that back has a permanent adhesive is combined with the superiors of newly rolling up, and the tackiness agent of repositionable (repositionable) front is combined with the second layer via the superiors of new volume.In this scheme, repositionable tackiness agent is responsible for the rolling part.In high speed is bonding, the width that is about to use up and the new cigarette above adhesive tape are touched.This repositionable tackiness agent separately, will newly be rolled up and draw in machine from second layer material, by the tackiness agent of the permanent adhesive of adhesive tape end, keep (hold).

WO 95/29115 has disclosed similar adhesive tape.This double sticky tape has two kinds of tackiness agents at end face, and has a kind of tackiness agent in bottom surface.This adhesive tape be fixed on the new volume the superiors below.In this arranges, a kind of tackiness agent keeps this superiors.The second tackiness agent is responsible for the width that contact is about to use up.Repositionable tackiness agent is also arranged overleaf, and it exposes the superiors in bonding.

Two kinds of adhesive tapes all have common shortcoming.While using them, repositionable tackiness agent opens wide by processing machine (finishing machine), as a result, may there is the width sheet to adhere to depart from the situation of roller (deflectionroller) or printing coverture (printing blanket).Thereby this may cause the width sheet to tear.

DE 196 28 317 has instructed the remedial measures of this problem.The structure of its adhesive tape and WO95/29115's is similar, but the repositionable tackiness agent on the back side replaces with double sticky tape, and this double sticky tape is characterised in that to have peelable (splittable) carrier.When bonding, this carrier is torn, and corresponding relic covers tackiness agent, they is remained noncohesive.This prevents from adhering to Surface Rupture Events by generation in the process of processing machine.

DE 199 02 179 has instructed another remedial measures.In this case, the band of tearing is from the forward position indentation.This indentation makes bonding efficiency greatly improve.

DE 198 41 609 has described a kind of both-sided adhesive attached component.Its carrier is not by single-part stationery but consists of the paper/paper composite body engaged with cure adhesive point.This adhesive tape also be attached to the superiors below.When bonding, adhesive spots extracts the fiber in one of (extract) this Composite Paper, exposes thus the superiors.

All these products have shortcoming.This peelable system is no matter it is complex body, the paper/film composite of paper, 2 layers of paper, the complex body of two membranes, or peelable polymer layer, all when initially tearing, shows the peak value of power, result, and peelable system is torn on its whole width simultaneously.

Go up (especially on intaglio printing enamelled paper) while using this jointing tape at enamelled paper (coated paper) especially, this peak force (force spike) usually causes adhesive tape to lose efficacy.One of reason lost efficacy is that the power of tearing can be higher than the power of anchoring paper and coating, and now coating is separated with paper.Perhaps this tears power in fact higher than the internal intensity of paper, and now paper tears.In two kinds of situations, bonding all unsuccessful.

DE 100 58 956 A1 have instructed a kind of improvement.For fear of peak force, tear band and there is the spination design.The direct of travel of the top point operation of sawtooth, therefore, when bonding, the top of sawtooth starts to tear.Because the area on this top is little, therefore also reduced the power value.

Yet the shortcoming of this system is that bonded area is almost 0 on the top of sawtooth.Therefore, the bonding strength on top is not enough to guarantee tear on this top.According to the quality of the paper of wanting to tear, there is breach below top, especially in bonding strength, higher than the site of the power of tearing, there is breach.In other words, some of this peelable band are not torn part by printing press or paper deep processing machine, and may cause situation about polluting.Because the bonding strength of this peelable system is relevant with the type of paper, these sizes of not tearing part are changing, and therefore tear needed power and are also changing.

DE 102005051181 A1 have instructed a kind of improvement.Herein, the peelable band provided is not the spination design, but top is circle.This causes bonded area to increase, and produces all the time enough bonding strengths, thereby has guaranteed reliably to tear.

Yet the nonlinear geometry structural table of this peelable system reveals weakness.When the adhesive tape of the feature with this peelable system from tape roll during unwinding, there is stress in leading edge (leadingedge) in this peelable system, this stress is present on the direction of crossing unreeling direction, and in some cases, this peelable band starts to tear.Wavy or take in the geometry that high slope is feature and especially can occur to tear too early.Because this system of tearing forms coherent two dimensional structure, this undesirable longer part that may involve (run over) this peelable system of tearing.Do not notice that the user in its situation, this is crucial especially, because adhesiveproperties descends.If the user notices initially and tears, must again use these adhesive tapes, this is consuming time and productivity is had a negative impact.

Summary of the invention

The purpose of this invention is to provide a kind of adhesive tape of eliminating shortcoming of the prior art, this adhesive tape particularly makes the reliable unwinding of tape roll, and uses adhesive tape and initially do not tear too early (incipientsplitting).

This purpose is achieved by a kind of adhesive tape bonding for high speed, this adhesive tape has limit, boundary, a left side (l) (boundary edge) and right (r) limit, boundary, comprise at least one main carrier and the first autohension binder layer on this main carrier positive (O), the back side of this main carrier (U) is with separating system, separately system is applicable to carrying out with substrate the bonding that can separate again, described mode of separating again makes in the bond regions of separating at this, do not stay adhesive residue on the back side of main carrier and in substrate, described separately System structure becomes the form of band, described band is that multistage is discontinuous and comprise a plurality of along the described adhesive tape sections that vertically (x direction) extends, the limit, boundary of each sections can be meaned by line F, wherein for right hand Descartes (right angle) coordinate-system, the x-axle is positioned at the vertical of adhesive tape, and the y-axle is vertical also from left pointing right with described x-axle maintenance, this line F meets the following conditions:

-E ₁(x ₁/ y _max) (" extreme point ") be positioned at rightmost

Perhaps B ₁district (" extreme value district ") comprises and a plurality ofly is positioned at rightmost point and with an E _1a(x _1a/ y _max) and E _1b(x _1b/ y _max) be boundary, wherein x _1a<x _1b,

-limit E ₂(x _min/ y ₂) be positioned at the minimum value of x direction

Perhaps B ₂the point of the minimum value that district comprises a plurality of x of being positioned at directions and with an E _2a(x _min/ y _2a) and E _2b(x _min/ y _2b) be boundary, wherein y _2a<y _2b,

-limit E ₃(x _max/ y ₃) be positioned at the maximum value of x direction

Perhaps B ₃the peaked point that district comprises a plurality of x of being positioned at directions and with an E _3a(x _max/ y _3a) and E _3b(x _max/ y _3b) be boundary, wherein y _3a<y _3b,

Line segment (the F of-rising _s) with an E ₂or E _2band E ₁or E _1afor boundary,

Line segment (the F of-decline _f) with an E ₁or E _1band E ₃or E _3bfor boundary,

And for described a plurality of sections (S), the line segment (F of rising _s) steepness lower than the line segment (F descended _f) steepness.

For the purpose of this specification sheets, the steepness of specific line segment (specific part on the limit, boundary of sections) should be understood the absolute value through slope (slope) value of the straight line of two line points that define described line segment.

Therefore the steepness of line segment particularly on mathematics corresponding to the absolute value of the mean value of the first order derivative of this line segment, can be expressed as the Riemann integral of its first order derivative as for this line segment.

Tear the shape regulation of sections and tear accordingly power, change with material.Shape/the geometry of related sections is intended to laterally need as far as possible little power for initially tearing at adhesive tape.

Yet this power is also necessary can not be too little, thereby there is no too early opening and therefore do not cause tearing at the volume boost phase.This is particularly useful for the belt-driven unit, wherein in the belt district, needs certain strength.

Therefore, particularly preferably the limit, boundary of the sections that crosses the adhesive tape unreeling direction arranged to alap slope, make the tendency minimum of initially tearing.Particularly this can by the sections over there separately by dexter sections-start in bonding operation-limit (vertex) make angled or round and smooth.Then, preferably make this sections start to continue to broaden from right hand side, to produce bonded area especially fully.

Particularly advantageously, for the attainment of one's purpose, if the absolute value of the arithmetical mean slope value of the line segment not only risen is lower than the absolute value of the arithmetical mean slope value of the line segment descended, and for the major part of all sections (particularly advantageously, all sections), a plurality of line points for the line segment risen, the absolute value of the slope value of this line (that is, this line derivative value herein) is less than in privileged direction the absolute value of the line segment of decline subsequently in the slope value (derivative value) of the point of identical y value.

Preferred a plurality of sections, more preferably most of sections, perhaps even preferred all sections have separately one or more subsegments in the line segment risen, point for each subsegment, the absolute value of the slope value of line (that is, this line is in the derivative value of this point) is less than in privileged direction the absolute value of the line segment of decline subsequently in the slope value (derivative value) of the point of identical y value.

The overall width of one or more subsegments of line in the y direction-also referred to as y-width-preferably add up to the line segment of rising or in privileged direction the line segment of decline subsequently the y-width at least 50%, more preferably at least 75%, even more preferably at least 90%, depend on that in these two y-width, which is less.

More preferably, the y-width of one or more line subsegments preferably add up to rising line segment the y-width at least 50%, more preferably at least 75%, even more preferably at least 90%, even be also like this when this line segment has less y-width.

(mathematics) that means the line at sections edge is described and preferably be take right hand Descartes (right angle) coordinate-system and carry out as basis, and this coordinate is determined with respect to adhesive tape.

The x-axle (X-coordinate) of this coordinate-system (point of axle common factor (axial intersection)) is extending longitudinally along adhesive tape, y-axle (ordinate zou) points to the right from the adhesive tape left side, z-axle (ordinate (applicate)) is from the positive back side (z direction) of pointing to of adhesive tape.

The position of the point that this axle occurs simultaneously is suitable, because can see this separately system when directly (straight) observes the adhesive tape back side, from this viewing angle, can describe best separately system.For the purpose of illustrating, in every kind of situation, draw this coordinate-system with dotted line in the drawings.

Therefore, the positive y orientation determination of coordinate-system for the right.More specifically, privileged direction (preferentialdirection) is corresponding to the x direction of aforementioned coordinate-system.

For most of sections, preferably stipulate the steepness of the steepness (rather level areas extensions) of the line segment that rises lower than the line segment of decline according to the present invention.Therefore, for these sections and adhesive tape, the mirror shaft that does not have parallel y-axle to extend.

Preferably be greater than 50%, more preferably at least 75%, even more preferably at least 90%, and ideally in all these sections, the steepness of the line segment of rising (rather level areas extension) is lower than the steepness of the line segment of decline subsequently.

If for being greater than 50%, more preferably at least 75%, even more preferably at least 90%, and all these sections ideally, the steepness of the line segment of the decline of sections is higher than the steepness of the line segment of this sections rising subsequently in the x direction, advantageous particularly.

The design of that rise and/or the line segment that descends can so that they at least in sub-segments (sub-region) with linear extension, or basically with linear extension, or-independently of one another-design and make them present one or more flex points.

In extreme case, the shape of line makes decline line segment extending vertically (being parallel to the y-axle), or extending vertically in one or more subsegments (subsection).

In the first preferred implementation of the present invention, the line segment monotone increasing of rising and/or the line segment of decline are dull to descend; One of expansion of this scheme is that wherein said line segment strictly monotone rises and/or descends.

Another program of the present invention is that described line segment does not show monotonicity in its path, therefore in the line segment of the line segment risen and/or decline, has maximum value and the minimum value (and/or maximum district, a plurality of part and/or smallest region) of a plurality of parts.Yet, now, if having the defined rising of the present invention or decline on whole corresponding line segment, thereby observe on the line segment of considering generally every kind of situation and rise and/or descend, and therefore meet the condition of relevant steepness ratio, meet the present invention.

In addition, also may there be flex point and/or platform (plateaus) in that rise and/or the path decline line segment.

By being positioned at rightmost some E ₁the path of the line of (" extreme point ") can-in a preferred manner-design and make this line at least can differentiate in the extreme value district, therefore the feature in the path by this extreme point is to be " round and smooth " circuit, perhaps, can also design and make this line herein can not differentiate, so there be peak value in this extreme point.

The line segment that rises in each case also can be that to the feature of the transition of decline line segment circuit can differentiate or cannot differentiate to the transition in extreme value district and/or extreme value district.For the extreme value district, being here now that first order derivative is dull extends, but is not (the extreme value district first derivative values a little be 0) of strictly monotone.

Left-hand component (the limit E of line (F) ₂and E ₃between the circuit on the left side) also can special design make its always can differentiate (in other words, on the whole path of this part can differentiate).Particularly advantageously, limit E ₂and E ₃circuit in zone is also round and smooth; Yet, on the contrary, also can there is peak value in each case or in of two points herein.

The accompanying drawing explanation

Further illustrate adhesive tape of the present invention by the following drawings, these figure only aim to provide schematic diagram of the present invention, and and do not mean that each embodiment of the present invention carried out to any restriction; Particularly, only provided by way of example the shape that separately sections (S) of system (TS) shows on the adhesive tape back side.

Fig. 1 a is the vertical view of adhesive tape,

Fig. 1 b is the upward view of adhesive tape,

Fig. 1 c is vertical (x direction) sectional view of adhesive tape, and

Fig. 1 d is horizontal (y direction) sectional view of adhesive tape;

Fig. 2 a-2c shows the various embodiments of the sections that is particularly suitable for adhesive tape of the present invention;

Fig. 3 a-3d shows multiple other forms of the sections that is particularly suitable for adhesive tape of the present invention;

Fig. 4 a and 4b have illustrated the particularly preferred sections with cycle order of the application;

Fig. 5 shows limit, the boundary form of asymmetric sections, the steepness of the line segment of rising and the line segment of decline;

Fig. 6 a and 6b are shown schematically in during the high speed of the open width material of coiling is bonding for engaging the method for the present invention of two open widths.

Embodiment

Adhesive tape (K) at first comprises main carrier (H) (not illustrating separately in Fig. 1 a and 1b), at the front of this main carrier (O _h) with autohension tackiness agent (M).Front (the O of adhesive tape (K) _k) and the front (O of main carrier (H) _h) be positioned at the same side (top); The back side (the U of adhesive tape (K) and main carrier _k, U _h) also be positioned at the same side (in every kind of situation all below)-this point referring to Fig. 1 c.

fig. 1 abe the vertical view of this adhesive tape, thereby dispose the front (O of the adhesive tape (K) of autohension tackiness agent _k) be positioned at Fig. 1 a above.At the adhesive tape back side (U _k) on be the separately system (TS) that comprises a plurality of sections (S).In Fig. 1 a, this separates the route (particularly, not showing sections) that system (TS) roughly dotted and only showed it, due to it be positioned at adhesive tape below, so this zone is invisible.

Adhesive tape can coiling (W), the now front (O of adhesive tape (K) _k) represent the appearance of each circle, the back side (U of adhesive tape (K) _k) represent that the inboard of each circle (also can the while reference fig. 1 c).In Fig. 1 c, the front (O of adhesive tape (K) _k) can be optionally with liner (A) (not shown), be specially the non-stick material liner, more specifically, the purpose of liner (A) is that adhesive tape is processed, and also more specifically, tape roll around the time produce antiseized effect (in Fig. 1 d, having shown equally this liner (A)) between each layer of adhesive tape.More specifically, liner (A) is by suicide material, and preferably siliconised paper forms.

In addition, for adhesive tape (K), shown cruciform Descartes (right angle) coordinate of describing in background technology, its x-axle (X-coordinate) is extending longitudinally along adhesive tape, and this axle points to volume circle (W) (x direction); Its y-axle (ordinate zou) points to the right (y direction) from the adhesive tape left side; Its z-axle (ordinate) is from the front (O of adhesive tape (K) _k) the sensing back side (U _k) (z direction).

Adhesive tape K has the left side (l _k) and the right (r _k); Appointment to these limits is to roll up the front (O of the direction observation adhesive tape (K) of circle (W) by edge _k) obtain.

Due to the size of adhesive tape in principle (but not being forcibly) by the size of main carrier, determined, so the left side of adhesive tape (K) and the right (l _k, r _k) common identical with main carrier (H).

If adhesive tape is turned to 180 ° [turning to (D)], will obtain the view of Fig. 1 b:

fig. 1 bthe back side (the U that shows adhesive tape (K) _k) view, therefore now separately system (TS) is in visible location (on the plane of main carrier).Separately system is with the straight line (r on the right _tS) and the straight line (l on the left side _tS) be boundary, these straight lines are parallel with the x-axle.

Same in this view is volume circle (W) on the main carrier plane.

Therefore this coordinate-system is corresponding to representation familiar on mathematics.Another result to these direction definition is that the unreeling direction of adhesive tape is corresponding to the x direction when rolling up the circle unwinding.

fig. 1 dshow by way of example the cross section of adhesive tape of the present invention with reference to optional embodiment, should not be understood as limitation of the present invention; Direction of observation is corresponding to the x positive dirction.Provide in front the Reference numeral corresponding to these definition.Also shown optional liner (A) in Fig. 1 d.This liner can be possible cutting apart and prepares, or this liner can be divided into two part (A by otch or predetermined rupture point (P) (being more specifically the form in perforation, seam (kiss cut), crack etc.) ₁) and (A ₂), described otch or predetermined rupture point are vertically that the x direction is extended along adhesive tape, therefore are parallel to adhesive tape longitudinal edge (r _k, l _k).

In application, during manual process adhesive tape (K), preferably this cushioning material has otch or perforation (P), can remove independently of one another thus the fragment (pieces) of generation.This cushioning material can also be fissureless form, especially when adhesive tape subsequently in the operation of automatic or automatization in conjunction with the time.For manual combination, this cushioning material is preferably paper, because now can tear with hand.In situation about automatically using, this cushioning material can also consist of film, because now adhesive tape adds that liner can cut by machine.Yet, also preferably use at this moment by respective handling, crossed-particularly silication-liner that paper is made because film may cause problem when the dicing tape because of its high ductibility especially.

Be attached to separately system (TS) below adhesive tape can with the right longitudinal edge (r of adhesive tape (K) _k) concordant (flush) layout.Yet the application for the present invention in high speed is bonding, be arranged in apart from longitudinal edge (r if will separate system (TS) _k) distance (V) [this distance refers to longitudinal edge (r here in place _k) to the length of the line of each sections low order end, in other words, longitudinal edge (r _k) to the straight line of delimitation (r that separates system _tS) length], show very large advantage.

Particularly, in order to realize some function, the measuring ability of mode of machine operation (regime) for example, adhesive tape of the present invention can comprise other layers, and is also contained in theme of the present invention, and this other layer is not shown in this application.

With regard to the diagrammatic cross-section of adhesive tape (K), separately the structure of system (TS) does not work in this, therefore in the application, never mentions, the separately system of adhesive tape of the present invention can have and is different from the structure shown in the application.Fig. 1 d of back is for describing concrete embodiment, and here, it is not intended to show that universal architecture of the present invention clearly limits this embodiment, for after description, Reference numeral (O _t, U _t, M _o, T and M _u) will describe in time.

fig. 2 athe embodiment that shows this class sections of this embodiment that is particularly suitable for adhesive tape of the present invention.Line has and is positioned at rightmost some E ₁(x ₁/ y _max) (" extreme point ") and be positioned at the limit E of the minimum value of x direction ₂(x _min/ y ₂), be positioned in addition the peaked limit E of x direction ₃(x _max/ y ₃).Point E ₂and E ₁define the line segment (F of rising _s), some E ₁and E ₃define the line segment (F of decline _f).Line segment (the F risen _s) steepness of (this line segment rather level areas extend) is lower than the line segment (F descended _f) steepness of (path of this line segment is comparatively precipitous herein).

Fig. 2 b has shown the expansion of this sections, wherein the path F of left-hand side line segment ₁(limit E ₂and E ₃between) with the x-axle basically (that is, at least in subsegment) parallel.

In a kind of preferred version, particularly for last-mentioned embodiment variant, some E ₂and E ₃y value identical (therefore, these limits are positioned at apart from the x-wheelbase from identical position).

Another favourable embodiment of the present invention as shown in Figure 2 c.Line has to comprise and a plurality ofly is positioned at rightmost point and with an E herein _1a(x _1a/ y _max) and E _1b(x _1b/ y _max) be the B1 extreme value district on boundary, put E on the x direction _1athe x coordinate figure be less than E _1bthe x coordinate figure (be x _1a<x _1b), described line also has the point of the minimum value that comprises a plurality of x of being positioned at directions and with an E _2a(x _min/ y _2a) and E _2b(x _min/ y _2b) be the B on boundary ₂district, some E _2acompare E _2bbeing positioned at the more left side (is y _2a<y _2b), described line also has the peaked point that comprises a plurality of x of being positioned at directions and with an E _3a(x _max/ y _3a) and E _3b(x _max/ y _3b) be the B on boundary ₃district, some E _3acompare E _3bbeing positioned at the more left side (is y _3a<y _3b).

In the embodiment of this programme, the line segment (F of rising _s) by B ₂the rightmost some E in district _2bwith at extreme value district B ₁the some E of the minimum value that is positioned at the x direction _1afor boundary.Line segment (the F descended _f) by extreme value district B ₁the peaked some E that is positioned at the x direction _1band B ₃the rightmost some E in district _3bfor boundary.According to the present invention, the line segment (F now risen _s) steepness again lower than the line segment (F descended _f) steepness.

As shown in Figure 2 c, with reference to B ₁district and B ₂district, B ₁district, B ₂district and/or B ₃district a little can be positioned at the maximum value (rightmost) of y direction, the maximum value of the minimum value of x direction or x direction, therefore the point in each district represents the straight line parallel with x axle or y axle, and frontier point no longer includes those points that are positioned at the peaked point of respective direction near being.Yet, as B ₃also can there is the not peaked point in respective direction in illustrative ，Gai district, district.

According to Fig. 2 a, the present invention also comprises its mid point E ₁, E ₂and/or E ₃in one or two respectively by B ₁district, B ₂district and/or B ₃those lines (F) that district substitutes, in other words, can be described as " geometry of hydridization " of the embodiment of Fig. 2 a and 2c.

In the embodiment shown in Fig. 2 b, some E ₁, E ₂and/or E ₃in one or two can also be respectively by B ₁district, B ₂district and/or B ₃district substitutes.

In Fig. 3 a-3d, show by way of example-and do not wish therefore theme of the present invention is applied to any restriction-be particularly suitable for multiple other forms of the sections of adhesive tape of the present invention.

In a kind of favourable embodiment, separately system represents series of identical sections in the x direction, in other words, make the focus (focal point, the i.e. geometric centre of described sections) of sections be positioned at straight line (baseline (X)) upper (arranging one by one).Very preferably this baseline extends in the x-direction, but also can with the x-axle at an angle (being more specifically acute angle) extend, thereby separately system was arranged on adhesive tape obliquely.

Also preferably identical space (distance between sections) is being set between sections.Very preferably on the x direction, the space between each sections is less than the length of each sections at the projection line of x direction in each case.

Separately system can also be advantageously provides with the form of the discontinuous band of sections, in each case, the geometry of sections is identical, in this geometry, the layout of sections is offset, the focus that makes them is not on the single straight line extended in the x-direction, but on two or more straight lines.

Now can be by the shape and size of sections, the distance between sections and separately system position (be directly adjacent to, separately between system, there is spacing etc.) and their quantity each other regulate the bonding properties of adhesive tape to the effect of playing very well.

The application particularly preferably is sections and has the cycle order, and also preferred sections gap has the cycle order.Shown the example of this layout in Fig. 4 a and 4b, but do not wished that the geometry of sections shown here brings any unnecessary restriction.

In a kind of preferred version, each sections hangs down several times at the Length Ratio adhesive tape of the projection line of x direction in the length of the projection line of x direction, such as low 1-20 doubly, 2-10 doubly, 3-5 doubly etc., such as low 1 times, 2 times, 3 times and 10 times etc.

Preferably, additionally or selectively, adhesive tape (K) laterally, i.e. y direction, the width of the band formed by sections (S) lower than adhesive tape (K) at the width of this direction width of adhesive tape (in other words, lower than).

One embodiment of the present invention have the separately system of the sections of the different geometries of configuration.At this, can there be especially two or more sections groups, the sections in each group is identical, their focus all is positioned on the straight line extended in the x-direction.In addition, the present invention includes following those embodiments, wherein the focus of sections is not positioned on the single straight line extended in the x-direction, but is positioned on two or more straight lines.

In a kind of highly preferred embodiment, the sections focus separately that geometry is identical all is positioned on the straight line extended in the x-direction.

Particularly, the less preferred separately system with sections of cycle order more herein.

Main backing can be preferably the paper gasket back of the body.The critical nature of this paper gasket back of the body is physical properties, is mainly tensile strength.The latter should be higher than the width tension force in printing press or other processing machines (web tension).Particularly at width tension force in lower machine, selected paper can also be thinner.This is favourable for process operation, because thinner material has less destruction (disruptive effect) by machine the time.

the separately characteristic of system on the adhesive tape back side

The separately system (TS) that is positioned at the adhesive tape back side according to the present invention is applicable to carrying out the bonding between main carrier and substrate.Design this and separate system in order to the bonding of being undertaken by system is separated again, and, in the bonded areas of separating, do not have adhesive residue to stay the back side of adhesive tape, or stay in substrate.This separately separates on in-plane, that is, in the z direction, separately (comprise because operation out of true or thickness fluctuation etc. slightly depart from the z direction and are not intended to and " in the z direction, separate " and run counter to phrase).Therefore, in the surf zone of the bonding of separating, at that face of adhesive tape or substrate, do not stay surface that be clamminess or viscosity.

Do not stay bonding separately more specifically the comprising of adhesive residue in the bonded areas of separating in the adhesive tape back side or substrate: (plane) in system separately tears process (more specifically, separately tear on the plane of the individual layer of system or monolithic (single-piece) layer), this system is peeling off of two layers laminated together each other, perhaps layer of system and separate splitting again of substrate that system is combined with this separately, and/or the splitting again of another layer of a layer of system and adhesive tape of the present invention separately.

As fig. 1 din the embodiment of shown separately system, itself be designed to also there is carrier (T) form of double sticky tape of (also referred to as " sections carrier " or " peelable carrier ") be achieved by separating system (TS), at every kind of described carrier of situation at its front (O _t) and the back side (U _t) all configure layer of adhesive (M _o, M _u).

In the first embodiment, this sections carrier is integral type (one-piece) (individual layer) carrier, but its planar separation after being subject to suitable power.Separating being bonded on the z direction of system generation by this can tear by plane again (particularly basically tearing at center with respect to the sections carrier surface) this sections carrier and again separate; The plane resistates of the sections carrier retained after tearing covers each binder layer without clinging power ground.

The sections carrier can be also multi-ply construction, and one of them carrier layer is peelable.

Context at this specification sheets is called " peelable " carrier and refers to and can be parallel to those carriers that their surface range (extent) are torn, those carriers of especially in fact tearing according to the requirement of technique for sticking." tear at center basically " refers to that in meaning of the present invention the plane resistates of tearing the generation carrier is as tearing product, compare its thickness approximately equal with non-central tearing basically, and at non-central significantly different (plane) carrier resistates of middle generation thickness of tearing basically as tearing product.Particularly, the center basically of integral type carrier is torn and is characterised in that, tears product reliably and covers corresponding tackiness agent without clinging power ground.In the situation that asymmetric, tear, on the part of too thin flat carrier resistates, this point may not be guaranteed.

The peelable carrier of expection comprises all peelable flat support materials, especially the paper (readily cleaving paper), kraft paper (kraft paper), Composite Paper system (for example duplicating paper (duplex paper) and applying glue (sized) paper system), the film composite that are easy to split (for example are, the applying glue film system), polymer composites (for example, the polymer composites of coextrusion) and polymerization non-woven fabrics.

Preferably use so peelable carrier, it tears intensity (splitting strength) significantly lower than the intensity of tearing that adapts to the required carrier of drawing force.For two material roll are connected to each other, particularly preferably use following peelable carrier, carrier or carrier layer (that is, significantly lower than main carrier H) that its tear-resistant ductility (tear propagation resistance) is significantly born actual drawing force lower than the principal plane at adhesive tape (main plane).Therefore, before main carrier destroys, this sections carrier is torn.This peelable system preference is based on paper.For instance, following paper or Composite Paper system especially are applicable to this purpose:

The height extruded paper of-applying glue (highly compacted paper)

-be easy to the paper system of separating, the paper that does not for example there is wet tenacity

-kraft paper (for example, (glazed) kraft paper of two sides calendering-find that particularly suitable kraft paper is that thickness is that 55 μ m, basic weight (basis weight) are 65g/m ²kraft paper)

-duplicating paper (duplex papers)

(have the paper of the laminar structure (lamination) of regulation, its process of tearing is very uniform; Thereby the stress peak that does not have chrominance signal for example to produce.These paper are for the production of wallpaper and filter paper.)

-peelable system, it is torn power and determines by the size of bounding point; The peelable system of the type has for example been described in DE 198 41 609 A1.

Separately top tackiness agent and the bottom adhesive of system should have high bonding strength.Specifically, if the bonding strength of these autohension tackiness agents in each surface (carrier and substrate) is larger than tearing the needed power of this peelable carrier, be favourable.Favourable peelable carrier preferably has 15 to 70cN/cm, particularly 22 to 60cN/cm, especially 25 to 50cN/cm the intensity of tearing.About tearing intensity and measurement thereof, with reference to DE 199 02 179 A1.

In a kind of scheme of the embodiment of adhesive tape of the present invention, separately carrier (T) of system is not the peelable with plane of individual layer, but be designed to can on plane, (in the z direction) be separated from each other (peeling off) two-layer form.They can be specially the laminating material of paper/paper laminate or film/film laminate or paper and film.The example of applicable system particularly including following based on paper and/or the laminating material based on film or compound system:

-duplicating paper

(paper with laminar structure of regulation, its process of tearing is very uniform; Thereby the stress peak that does not have chrominance signal for example to produce.These paper are for the production of wallpaper and filter paper.)

-peelable system, it is torn power and determines by the size of binding site; The peelable system of the type has for example been described in DE 198 41 609 A1.

For the adhesive tape of Repulpable, the laminating material of two layers of paper is particularly advantageous.The example of such paper laminate is:

-with the mode the determined height extruded paper of applying glue (particularly, thering is the high paper of tearing intensity) together.Applying glue can for example use starch, amyloid derivative, based on methylcellulose gum ( kleister, tesa AG, Hamburg;

, Henkel KGaA, D ü sseldorf) or the wallpaper based on polyvinyl alcohol derivative stick with paste and to carry out.The explanation of these laminating material systems for example, is provided in EP 0 757 657 A1.

Laminating material can be also the laminating material of two layers of polymers, the laminating material of polymer layer and paper, or the laminating material of polymer layer and film, and this polymkeric substance is the polymkeric substance for using as intaglio printing, silk screen printing etc. by printing technology more particularly.Particularly suitable for the application's polymkeric substance is cured polymer compositions, also have containing solvent compositions, wherein after using, solvent is removed and form layers, also has in addition such polymer composition, its deliquescing under heating status, in other words there is the viscosity that is enough to be applied, but take the form of sufficiently stable layer at application temperature.

The bonding of by this, separating System forming can be separated (peeling off) and again separate in plane each other by two layers by the sections carrier; Each binder layer is covered without clinging power ground by the planar segment carrier layer separately retained afterwards.

Yet the scheme of this embodiment also comprises following every other adhesive tape, wherein construct carrier (T) thus in two-layer, itself and other materials are discerptible, the material of this carrier more specifically is applicable to corresponding application.

The separately core concept of system of the type is that the lock out operation of peelable system can occur between separated layer at two, rather than occurs within a layer.Therefore, for example, do not have fiber to extract (extreact) out from paper carrier, and can accurately determine separately these layer of needed power.In addition, the long-time storage of adhesive tape should not can cause separately any substantial variation of each layer of needed power.The binding characteristic of these two layers can obtain in any desired way or preferably in the manner as described below.For two material roll are connected to each other, the application also preferably uses such lamination sections carrier, carrier or carrier layer (that is, lower than main carrier) that its " tear-resistant ductility " (with respect to stripping process) significantly bears actual drawing force lower than the principal plane at adhesive tape.Therefore, should separate system before one of main carrier or sections carrier layer are destroyed can peel off.Therefore, in this case, separately system consists of at least two-layer, and wherein said at least two-layerly peeled off under the condition of specified force standing, be separated from each other, and in high speed, in bonding process, has surpassed this specified force.The film that the example of this system is coextrusion.

More particularly, the separately intensity of laminating material or two carrier layer systems has the numerical value of tearing intensity of the integral type carrier of tearing on plane as implied above.

The advantage of separately system as above is that this is separated to system separates needed power and keep constant always, thereby it is bonding under controllable condition, to carry out high speed, and prevents that adhesive tape from working improperly.

For example, these two discerptible layers can be attached to each other together by adhesive power.Now these two layers can be by the forming of the material of any needs, and according to material, physical properties separately changes the adhesive power between these two layers.Those skilled in the art can select suitable material to obtain the adhesive power of stipulating between these two layers.When the power of adhesive tape load normal direction, during with the power of adhesive tape principal plane perpendicular, once this power is greater than adhesive power, these two layers just are separated from each other.After separating is occurring, and one deck wherein covers the autohension tackiness agent in each case, covers this autohension tackiness agent in inviscid mode thus.This guarantees these two layers to be separated from each other by the power that keeps in time constant regulation.Because these two layers can be attached to each other together based on adhesive power, do not need extra binder layer, therefore can reduce the total thickness of adhesive tape.

In another embodiment of system separately, in its end face or bottom surface with tackiness agent (the system tackiness agent that can separate again) for the substrate combination.In the simplest form of this embodiment, the binder layer that can separate again itself (separately) forms this system.Perhaps, such system can also be multilayered structure, for example has carrier and other binder layers on the carrier another side (it can be (autohension) tackiness agent that cocoa separates again equally).

In this embodiment, the system binder layer that this can separate again makes after combination, can solidify or otherwise lose its binding property, result, although retained at first bonding, but this binder layer and substrate no longer include after splitting again viscosity (therefore the tackiness agent on this meaning be start to produce bonding effect but subsequently with non-tackiness agent and/all compositions, particularly polymer composition that inviscid form exists).The system tackiness agent that this can be separated again is configured in the separately front of system, therefore bonding separately occurs in particularly on that face of adhesive tape main body and (is specifically related to thus its main carrier), but the autohension tackiness agent that also this can be separated again is configured in the separately back side of system, thereby that face of substrate that separately occurs in of bonding.In the previous case, system remains in substrate, and does not expose adhesive area; In the later case, system remains on adhesive tape, and do not expose adhesive area (when this separates system while only consisting of the system tackiness agent that can separate again, perhaps this antiseized system is when end face and bottom surface all have the system tackiness agent that can separate again, and whether disconnected position is with comparatively firmly relevant with the bonding strength of main carrier or substrate).After separately processing, two surfaces in the bond regions of separating are inviscid form.

In the multilayer system that also there are other binder layers (be especially non--can separate again binder layer) except the system tackiness agent, if in separating of that face generation system tackiness agent of adhesive tape, these other binder layers can with the substrate permanent bond, if perhaps that face generation system binder layer of substrate separately, these other binder layers can with the adhesive tape permanent bond.

For such system tackiness agent, what be applicable to has, for example, and cure adhesive, cured varnish, polymkeric substance (particularly cure polymer) etc., particularly, also have inviscid in room temperature (application temperature) and carry out the heat-activatable tackiness agent of binding operation when heating.

The tackiness agent that can separate again of this system can paint sections carrier, on the whole zone of main carrier (H) and/or respective substrates; Yet, according to the present invention, also can only on regional area, apply this tackiness agent.Can pass through printing technology, more specifically by silk screen printing or this tackiness agent that can separate again of gravure application.

Another embodiment of adhesive tape of the present invention is as follows: wherein by the above-mentioned tackiness agent that can separate again in the mode of system separately particularly by the back side of one of above-mentioned technology paint main carrier.

In a kind of particularly preferred scheme of adhesive tape, there is the two-layer identical or different tackiness agent that can separate again, they are strippable under the condition of described requirement.Separately system can specific design be only to comprise separately the structure formation of these binder layers; Separately system with this binder layer laminar structure selectively comprises other layers.

According to the present invention, can also exist two or more to separate system, be distributed on the width at the adhesive tape back side.

This has advantage, and at first, the bonded area of adhesive tape increases, secondly, complex body tear strength increase.It is also feasible adopting different band geometries at this.

Have two or more while separating system at adhesive tape, these separate, and system can consist of identical material and therefore have the equal power of tearing, but separately system that also can the preferred disposition differing materials makes them have the different power of tearing.

The adhesive tape back side second or when appropriate other separate system can be with within first minute, to open system the same, preferably according to the present invention, be shaped, in particular for the form of sections, but also can there are other geometries, in the simplest situation, it is that straight line band well known in the prior art.

For the use in the paper conversion industry, if some compositions in the adhesive tape of the present invention adopted in operation, more preferably most of compositions, even more preferably all compositions be Repulpable (, particularly water-soluble or water dispersible), be particularly advantageous.

For tackiness agent, autohension tackiness agent especially, at binder layer (M, the M of adhesive tape of the present invention (K) _o, M _u) meaning on, can use (can be selected independently of one another each layer) to obtain out the acrylate (can be water-soluble and/or water-insolube) of chromatic effect, natural rubber composition, synthetic rubber composition, the mixture of above-mentioned composition, composition based on multipolymer and/or segmented copolymer, particularly based on acrylate and/or natural rubber and/or synthetic rubber and/or cinnamic composition.Particularly advantageously, can use dispersion, thermally melting (but hot melt processing) tackiness agent and/or solvent-laden tackiness agent.Consider that the concrete Application Areas (bonding, static bonding, the volume-end of high speed in conjunction with (roll-end bonding) etc.) particularly, of adhesive tape of the present invention selects this tackiness agent.

Particularly, the tackiness agent (M of sections carrier (T) not only _o), and with being placed on the bonding suprabasil tackiness agent (M of wish _u) can be the autohension tackiness agent, can be also cure adhesive.

Advantage for the cure adhesive of carrier is, they can less bed thickness be applied and therefore reduce the integral thickness of system.Tackiness agent (M on that face that is placed in the bonding substrate of wish _u) meaning on, cure adhesive provides reliably the advantage in conjunction with the substrate of difficult especially combination.For example, such tackiness agent passes through water or other solvents, or is activated by heating.Although use these tackiness agents to need more times-usually necessary activated adhesive, the paint adhesive tape, solidify afterwards this tackiness agent-but this in modern production, in the cycle, usually can effectively realize because the bonding preparation in center (central splice preparation) is common operation.In this operation, usually within 6-8 hour in advance, prepare the bonding volume of wish.

Particularly preferably use shearing resistance extra high (autohension) tackiness agent, determine its dependent variable of adhesive properties, as viscosity (initial viscosity), force of cohesion, viscosity, degree of crosslinking should be optimized to according to the present invention specific end-use, the method that this specific end-use can be familiar according to those skilled in the art is carried out.Note, can use in principle the pressure sensitive adhesive of all base types that meet requirement of the present invention.

In other favourable embodiments of adhesive tape of the present invention, adhesive tape dispose in addition detectable layer and/or the layer described at least one dispose detectable feature.This makes in (bonding) operating process and detects adhesive tape by suitable proofing unit.Particularly, can realize the automatic control of operation by this mode.But the suitable selection of detected characteristics is provided, also can transmits other information (except the Yes/No item of information) by this mode.

Preferably by optics and/or calutron, realize the detection of layer.For example, but a pattern that can dispose optical detection in these layers, and this pattern can determined with suitable sensor through in the process of machine.In a similar fashion, but a feature (for example metallization (metallization)) that can contain electromagnetic detection in these layers, and this feature can be determined with electromagnetic sensor.On the basis of the detectability of at least one, in the accelerator of the paper roll that for example disposes described adhesive tape, detect adhesive tape in these layers, thereby start in time the bonding or binding operation to the width end of old volume at correct point.In addition, while in the equipment that is being called substandard products splitter (reject diverter), further processing paper web, thereby can detect adhesive tape, this part and bonded joint (spliced connection) are separated.Therefore, the label or tag that adhesive tape plays a part to use in addition up till now, described label or tag manually is applied to the volume of web material in the prior art, and this usually produces fault, because label is applied in wrong position.Therefore, what can guarantee is on the basis that can detect adhesive tape, can automatically determine the exact position of combination, and this combination can always automatically be excised or isolate in correct position.Use this visually detectable adhesive tape, also can obtain the information about working order by the rotating speed based on volume, because for example the movement of adhesive tape can directly obtain the travelling speed information about width.

Simply, but detection layers is especially aluminium foil of tinsel.But this detection layers for example thickness of aluminium foil is for example 6 to 12 μ m.But should detection layers can be also the paper sheets that disposes metallization or there is the metallicity part.If one in these layers is tinsel, other layer preferably adopts following form: the multipolymer of acrylate dispersoid, polymethylmethacrylate (PMMA), latex, polyvinylacrylate (PVA), polyvinyl chloride (PVC) or these materials.By these combinations of substances, above-mentioned tear-resistant ductility can be set in the mode with expectation of regulation.In this context, even between the long-time shelf lives of adhesive tape, these intensity levels do not change, because the bounding force between these materials remains unchanged.Be understandable that, both each their outside of leisure of tinsel and other layer dispose the autohension tackiness agent.This autohension tackiness agent is water-soluble or water-fast acrylate autohension tackiness agent preferably.Can use equally the dispersion as natural rubber and synthetic rubber composition and above-claimed cpd.

Can also advantageously but detection layers be applied on carrier again.In this case, but detection layers be arranged on a side of carrier, at the opposite side of carrier, be relevant autohension tackiness agent.Carrier can consist of paper or film/paper tinsel.Especially, carrier can be BK bleached kraft smooth, white.

the feature of adhesive tape and size

Below all (size) numeral is applicable to linear formula of the reality of line F independently, even be also like this when one of the figure shown in numeric reference the application and embodiment are described.Therefore for shown in embodiment adopt the value of these appointments in particularly advantageous mode, but be not intended to be limited to this.

Very preferably little than the width of adhesive tape (K) (being its width in the y direction) at the width of the separately system at the adhesive tape back side width of y direction (), the width of described separately system is from the You Jie limit (r of system separately _tS) guiding border area (leading edge region) (reaching rightmost) measure the separately Zuo Jie limit (l of system _tS), or, if does not extend with form of straight lines on this limit, boundary, measure the separately Zuo Jie limit (l of system _tS) leftmost guiding border area.In a kind of preferred version, the width of adhesive tape is the separately at least twice of system width at its back side, the width boundary based on above-mentioned.

The width of adhesive tape is (at the You Jie limit of y direction adhesive tape (r _k) and Zuo Jie limit (l _k) between distance) be preferably 30～120mm, more preferably 40～80mm, be very preferably 50mm.

On the y direction, the width of this sections is preferably 5～30mm, and more preferably 10～20mm, be very preferably 15mm.

Perpendicular to baseline (X) direction between the right margin straight line r of system separately _tSwith the left margin straight line l that separates system _tSbetween distance, the width of system separately, preferably be at most 40mm, is in particular 20～30mm, is very preferably 15～25mm.Only identical sections is arranged in the separately system on baseline therein, and preferably the width in the y direction is 15mm, corresponding to the y-width of each sections.

Advantageously, the line segment of the rising (Reference numeral " F in figure _s") at the length of the projection line of x direction and the line segment (Reference numeral " F in figure of decline _f") be defined as 10: 1 to (1.25) at the length ratio of the projection line of x direction: 1, preferably be defined as 7: 1 to (1.5): 1, very preferably be defined as 5: 1 to 2: 1.

Line segment (Reference numeral " the F in figure very preferably risen _s") in the length of the projection line of x direction, be 10～40mm, be preferably 15～30mm, be very preferably 20～25mm.

Line segment (Reference numeral " the F in figure further preferably descended _f") in the length of the projection line of x direction, be 5～30mm, be preferably 8～20mm, be very preferably 10～12.5mm.

The steepness of the line segment risen and the line segment of decline is mutually independent, and preferably has following size (shown referring to Fig. 5, linear formula described herein is the intention without any restriction for the following general characteristic of pointing out):

Line segment (the F of the rising of (F) online _s) in straight steepness line (compensating straight lineG _s) [this straight slope is corresponding to the line segment (F risen _s) in the arithmetical av of first order derivative of line (F) at every some place] acute angle (α) that surrounds with the x-axle preferably is at most 45 °, is more specifically 18 °～40 °, is very preferably 30 °～35 °, is desirably 33 °.

Line segment (the F of the decline of (F) online _f) in straight steepness line (G _f) [this straight slope is corresponding to the line segment (F descended _f) in the arithmetical av of first order derivative of line (F) at every some place] acute angle (β) that surrounds with the x-axle is greater than the line segment (F of the rising of (F) online _s) in straight steepness line (G _s) acute angle (α) (angle number based on separately and do not consider sense of rotation) that surrounds with the x-axle.Line segment (the F of the decline of (F) online _f) in straight steepness line (G _f) acute angle (β) that surrounds with the x-axle is preferably 30 °～90 °, is more specifically 50 °～85 °, is very preferably 60 °～80 °, is desirably 76 °.

From baseline to the line segment (F descended _f) in straight steepness line (G _f) sense of rotation usually with from baseline to the line segment (F risen _s) in straight steepness line (G _s) sense of rotation contrary; Particularly, the line segment (F of the rising of line (F) _s) in straight steepness line (G _s) and the acute angle (α) that surrounds of baseline (x) to privileged direction (v), open, so limit is positioned on the direction contrary with this privileged direction.

Yet theme of the present invention also comprises those embodiments that two sense of rotation are identical, and (particularly wherein two angles (α, β) have those of limit on the direction contrary with privileged direction.Now, linear formula (F) is corresponding to the sections form that has limit (extreme point) " point that jumps (jumping over) " in the x direction).

As top previous description, the separately system (TS) of combination below can be arranged to obtain to the longitudinal edge (r on the right of adhesive tape (K) _k) concordant or pinch in one segment distance (V) (apart from V ≠ 0).Purposes for the present invention in high speed is bonding, the verified distance (V) when separately system (TS) indentation is at most 15mm, is in particular 0.5～7mm, and also preferred distance is 1.5～4mm, very favourable while very preferably being 2～3.5mm.This concordant property (flushness) and above-mentioned distance value refer in particular to the You Jie limit (r of adhesive tape (K) _k) and separate the right margin straight line (r of system _tS) between distance, the right margin straight line (r of system separately _tS) determine (referring to Fig. 1 b and 1d, also having Fig. 4 a and 4b) by the extreme point that is positioned at rightmost sections.

Shown as experiment, in order to obtain the successful operator scheme under high speed, the power that advantageously will tear operation is incorporated in the peelable carrier of tearing band (splitting strip), because otherwise there is uncontrolled the tearing situation of (above being called " crack (tear) ") part.What for this reason, the protuberance of adhesive tape (be defined as and tear the distance of band apart from longitudinal edge) was introduced as power is auxiliary.When reaching certain, this distance can especially successfully avoid crack when big or small.

But, if indentation too large (particularly surpassing 3.5mm), the situation of the leader stretched out of jointing tape folding (turn over) increases, and also has the situation in the uncontrolled behavior of bonding operating period, as viewed in experiment.

When existing, the otch in cushioning material (A) or predetermined rupture point (P) can preferred disposition from adhesive tape Zuo Jie limit (l _k) distance 20～40mm position.

Have been found that specially suitable adhesive tape has following size:

Should understand following registration (indication) with (relevant to preparation) accuracy tolerance, can estimate to be about 5%.

The width of adhesive tape (width on the y direction) is for 50mm and have separately system, and separately system contains a series of mutually the same sections, and as shown in Figure 1 b, the baseline of this figure (X) is corresponding to the x-axle of adhesive tape.Be attached to following separately system (TS) from the right longitudinal edge (r of adhesive tape (K) _k) indentation 2mm.

This sections is 15mm at the width of y direction.

Line segment (the F that each rises _s) in the length of the projection line of x direction, be 25mm, the line segment (F that each descends _f) in the length of the projection line of x direction, be 5mm.

Line segment (the F of the rising of (F) online _s) in straight steepness line (G _s) acute angle (α) that surrounds with baseline (X) is 33 °.Line segment (the F of the decline of (F) online _f) in straight steepness line (G _f) acute angle (β) that surrounds with baseline (X) sense of rotation contrary (corresponding to the description in Fig. 5) that is 76 ° and sense of rotation and angle (α).

Adhesive tape of the present invention is particularly suitable for preventing or alleviating at least considerably the problem relevant with the unwinding of tape roll.The invention provides thus the adhesive tape of the present invention of coiling (being called reel).To such volume, usually use term " volume " or " tape roll ", but strictly it seems, described volume represents spiral of Archimedes.When this context is mentioned volume, tape roll or reel, refer to the adhesive tape of reeling as follows, make in cross section (lateral section), this winding article has the form (this point is with reference to figure 1c) of spiral of Archimedes.

What particularly preferred web-like winding article was the adhesive tape lining of wherein reeling with cushioning material is that, as above described in the face of adhesive tape itself.

The present invention also provides the method for using adhesive tape of the present invention bonding for high speed.

fig. 6 a and 6bbe shown schematically in during the high speed of the open width material of coiling is bonding for engaging the method for the present invention of two open widths, and do not wish that this figure applies any unnecessary restriction to theme of the present invention.

In the method for the invention, the uppermost open width circle (11) (particularly its end or its end regions) that uses adhesive tape (K) newly to roll up is fixed in the open width circle (12) of lower floor, make the part of the autohension tackiness agent (M) required in conjunction with the open width (13) that is about to use up expose (referring to Fig. 6 a), wherein this adhesive tape (K) comprises at least one and separates system (TS), and separately system is suitable for obtaining and can again separates and there is no a bonding of adhesive region.Now, old volume by the almost completely unwinding that so the new volume placement of equipment is replaced close to needs, new volume is accelerated to the rotating speed substantially the same with this old volume and then is pressed to old open width (13), the autohension tackiness agent (M) of the exposure of adhesive tape when open width has substantially the same speed (K) is incorporated into old open width (13), and make by the parallel planes that is incorporated into that separates system (TS) generation, to separate between the open width layer (12) of uppermost open width layer (the end layer of this circle) (11) and lower floor, make and separately process adhesive-free district exposure afterwards; simultaneously Wherein use adhesive tape of the present invention.Particularly, according to above-mentioned, described separately one of the mechanism of adhesive tape of the present invention is separated to (referring to Fig. 6 b) by the combination of the open width layer (12) of uppermost open width layer (11) and lower floor.

Fig. 6 a and 6b show by way of example-and do not wish therefore thought of the present invention is carried out to any unnecessary restriction-have the separately system (TS) of tearing carrier (T), this is torn carrier and has bottom adhesive (M _u) and top tackiness agent (M _o) (in this, separating the discussion of system referring to top about this equally).Carry out this separation process, tackiness agent (M by tearing of sections carrier (T) _o, M _u) be torn carrier (T) tear product (T ₁, T ₂) covering of non-sticky ground.

In the expansion of the inventive method, by adhesive tape to the open width of the moving combination that meets at right angles.In other favourable scheme of the inventive method, adhesive tape also can with the open width with respect to moving with 30 ° at the most, more specifically with the acute angle combination of 10 ° at the most.

Then carry out separate operation [by the open width layer (12) of uppermost open width layer (11) and lower floor in conjunction with separately]-especially when adhesive tape to the open width of moving meet at right angles in conjunction with the time-to cross the direction of baseline; In other words, described tear or separation process starts from the separately right margin (r of system (TS) _tS) maximum value or maximum value district along its minimum value or minimum value district, namely the direction of negative y-axle is carried out.

In adhering method, under the end of the uppermost open width layer (11) of rolling up in new open width (or end slight distance of the uppermost open width circle of distance), with form of straight lines, adhesive tape of the present invention (K) and new open width clove hitch are closed, make the part of adhesive tape (K) freely, and by separating system (TS) by the back side (U of adhesive tape _k) be incorporated into lower floor's open width layer (12) [particularly for corresponding adhesive tape embodiment, with the tackiness agent (M that separates system (TS) _u), do not illustrate separately herein], thus uppermost width layer (the particularly end of uppermost width layer) protected; If desired, liner (A) is present in autohension tackiness agent (M) above as required, only removes at first a part (A of liner (A) ₂), thereby the part of the required autohension tackiness agent of adhering method still is lined with liner (A ₁), the volume under this state does not have free adhesive area.After this, for the last preparation of adhering method, by any remaining liner (A existed ₁) remove, the new volume that to so equip is afterwards placed the old volume close to almost completely unwinding to be replaced, to newly roll up and accelerate to the rotating speed identical with this old volume, then will newly roll up and press to old open width (13), when width has substantially the same speed, the autohension tackiness agent (M) of the exposure of adhesive tape (K) is incorporated into to old width (13), and simultaneously separately system (TS) separate the combination between the open width layer (12) of uppermost open width layer (11) and lower floor, be before uppermost open width floor (11) with the district of open width circle (12) combination of lower floor in two regional maintenance adhesive-frees.

Therefore, at adhesive tape (K) with after the width that is about to leave away (13) contacts, separately system (TS) by adhesive tape (K) is carried out separate operation, thereby the uppermost open width circle (11) of new volume is antiseized (released), has any adhesive residue no longer unlimitedly.

Particularly, the width that this open width is paper web and/or film web and/or textile materials (woven fabric, knit goods, non-woven fabrics fabric etc.).

Therefore, by the shape of sections, can carry out effective adjusting of the corresponding power of tearing-with material irrelevant-and make thus it be applicable to requiring regulation.The shape of described sections and/or geometry should preferably require the power of initially tearing on adhesive tape horizontal (y direction) extremely low.Yet this power should be too not low yet, thereby twist in that boost phase can not opened prematurely and therefore cause tearing.This especially applicable band-drive unit, wherein need specific intensity at zone.

At the described sections with extremely low slope of the landscape configuration of adhesive tape unreeling direction, make thus the tendency of initially tearing drop to minimum.Due to the asymmetry of sections, thereby enough bond areas can be guaranteed, the process of tearing with respect to the y direction can be optimally carried out.

Yet, due to this sections, if guarantee-exist that any too early initially tearing-this initially tears and always be limited to related sections and particularly can not expand in sections simultaneously, because there is sections.Use the sections of respective numbers, it is contemplated that the only initial destroy of single sections is negligible for total sections quantity of using in tape portion.

Adhesive tape of the present invention shows that it is particularly suitable for estimating purposes.

Claims

1. the bonding adhesive tape for high speed, it has limit, boundary, a left side (l) and limit, boundary, the right side (r), comprise at least one main carrier and the first autohension binder layer on this main carrier positive (O), the back side of this main carrier (U) is with separating system, separately system is applicable to carrying out with substrate the bonding that can separate again, described mode of separating again makes in the bond regions of separating at this, does not stay adhesive residue on the back side of main carrier (H) and in substrate

Described separately System structure becomes the form of band, described band be multistage discontinuous and comprise a plurality of along the described adhesive tape sections that vertically (x direction) extends,

Described sections limit, boundary separately can be by line (F) expression, and with respect to right hand Descartes (right angle) coordinate-system, wherein the x-axle is positioned at the vertical of adhesive tape, and the y-axle is vertical also from left pointing right with described x-axle maintenance, and this line meets the following conditions:

-E ₁(x ₁/ y _max), " extreme point " is positioned at rightmost

Perhaps B ₁district, " extreme value district " comprises and a plurality ofly is positioned at rightmost point and with an E _1a(x _1a/ y _max) and E _1b(x _1b/ y _max) be boundary, wherein x _1a<x _1b,

-E ₂(x _min/ y ₂) be positioned at the minimum value of x direction

-E ₃(x _max/ y ₃) be positioned at the maximum value of x direction

And for described a plurality of sections, the line segment (F of described rising _s) steepness lower than the line segment (F of described decline _f) steepness, the steepness of line segment refers to the absolute value through the slope value of the straight line of two line points that define described line segment.

2. the adhesive tape of claim 1 is characterized in that:

Each sections (S) hangs down many times at the Length Ratio adhesive tape (K) of the projection line of x direction in the length of the projection line of x direction.

3. the adhesive tape of claim 1 is characterized in that:

The band that sections (S) forms is horizontal at adhesive tape (K), namely the width of y direction lower than adhesive tape (K) width in this direction, in other words lower than the width of adhesive tape.

4. the adhesive tape of claim 2 is characterized in that:

5. the adhesive tape of any one in claim 1 to 4 is characterized in that: described band by series of identical sections (S), formed and sections (S) between distance equate, described sections (S) is arranged on the x direction one by one.

6. the adhesive tape of any one in claim 1 to 4 is characterized in that:

Described sections comprises other carriers (T) separately, i.e. " sections carrier " arranges binder layer separately at the front and back of other carriers (T), and this sections carrier (T) is that plane is peelable or strippable.

7. the adhesive tape of claim 6 is characterized in that:

Described sections carrier (T) is single-part stationery.

8. the adhesive tape of claim 7, it is characterized in that: described sections carrier (T) is two-layer or more multi-layered assembly.

9. the adhesive tape of claim 8, is characterized in that described sections carrier (T) is the assembly of at least two ply of papers, the assembly of the assembly of at least two retes or at least one ply of paper and at least one rete.

10. the adhesive tape of claim 1-4 any one is characterized in that:

Described sections (S) comprises the macromolecular compound that carries out described bonding.

11. the adhesive tape of claim 10 is characterized in that:

The back side by described polymer by the described adhesive tape of printing paint.

12. the adhesive tape of claim 10 is characterized in that: described polymer is arrived to the back side of described adhesive tape by silk screen printing or gravure application.

13. the adhesive tape of any one in claim 1 to 4 is characterized in that:

The line (F) of a plurality of described sections (S) is at their extreme point (E ₁) section in can the mathematics differentiate.

14. the adhesive tape of any one in claim 1 to 4 is characterized in that:

Described sections boundary line (F) is at the limit E of the minimum value that is positioned at the x direction ₂path in and/or be positioned at the peaked limit E of x direction ₃path in can the mathematics differentiate.

15. the adhesive tape of any one in claim 1 to 4 is characterized in that:

The tackiness agent that forms described the first binder layer is based on acrylate, natural rubber or elastomeric tackiness agent.

16. the adhesive tape of any one in claim 1 to 4 is characterized in that:

The back side of described main carrier, outside at described band, separate system with one or more other, these separate system and are applicable to carrying out with substrate the bonding that can separate again, described mode of separating again makes the bond regions of separating at this, does not stay adhesive residue on the back side of main carrier and in substrate.

17. the adhesive tape of any one in claim 1 to 4 is characterized in that:

Front (O at described adhesive tape (K) _k) tackiness agent that forms binder layer (M) is based on acrylate, natural rubber or elastomeric tackiness agent.

18. the adhesive tape of any one in claim 1 to 4 is characterized in that:

The back side (the U of adhesive tape (K) _k) separate system (TS) with one or more other.

19. the adhesive tape of claim 18 is characterized in that:

At the back side of described adhesive tape (U _k) upper, not every separately system (TS) all has identical geometry.

20. engage the method for two open widths during the high speed of the open width material of coiling is bonding, wherein will newly roll up uppermost open width circle (11) is fixed on the open width circle (12) of lower floor by adhesive tape (K), described adhesive tape (K) comprises that at least one separates system (TS), separately system (TS) is suitable for obtaining and can again separates and there is no the bonding of adhesive region, makes the part of the autohension tackiness agent (M) of the open width (13) that need to be about to use up for joint be exposed to the front (O of adhesive tape (K) _k), the new volume of so equipping is placed on to the side of the old volume of the almost completely unwinding that needs replacement, to newly roll up and accelerate to the rotating speed identical with this old volume, then be pressed to old open width (13), the autohension tackiness agent (M) of the exposure of adhesive tape when open width has identical speed (K) is incorporated into old open width (13), and make to be attached on the open width layer (12) of lower floor at uppermost open width layer (11) simultaneously, the described parallel planes that is incorporated into by separately system (TS) generation separates, make and separately process adhesive-free district exposure afterwards, it is characterized in that, use the adhesive tape that segmentation separates system that has of aforementioned claim any one.

21. the method for claim 20 is characterized in that:

The separately processing of described separately system (TS) starts from the extreme point (E of sections (S) ₁) or extreme value district (B ₁), the described process of tearing is carried out in the direction of crossing baseline, in other words, at negative y-direction of principal axis, carries out.

22. comprise the reel of the adhesive tape of claim 1-19 any one.