CN101513772A - Method and apparatus for machining transferring resin sheets - Google Patents
Method and apparatus for machining transferring resin sheets Download PDFInfo
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- CN101513772A CN101513772A CNA2009100078908A CN200910007890A CN101513772A CN 101513772 A CN101513772 A CN 101513772A CN A2009100078908 A CNA2009100078908 A CN A2009100078908A CN 200910007890 A CN200910007890 A CN 200910007890A CN 101513772 A CN101513772 A CN 101513772A
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Abstract
The invention provides method and apparatus for machining transferring resin sheets. Continuous resin sheet under heating and melting status continuously extruded from mold is held between a first press roller and a second press roller, a continuous resin sheet under close contact status with the second press roller is cooled, and the continuous resin sheet is held between the second press roller and the transferring roller of the second press roller subsequently so as to transferring surface pattern of the transferring roller onto the continuous resin sheet. A plurality of concave slots are formed in the transferring roller surface and the intersection shape, the bottom distance P between adjacent concave slots is set between 10 mu m to 500 mu m, and concave slot depth H is set from 3 mu m to 500 mu m. Therefore, transferring resin sheets capable of precisely and rapidly transferring surface pattern thereon can be produced.
Description
Technical field
The present invention relates to a kind of method of machining transferring resin sheets, and relate more specifically to a kind of resin sheet of processing and be transferred to method on the resin sheet with surface configuration with roller mould.
Background technology
Usually, be transferred to method on the resin sheet as a kind of resin sheet of processing with surface configuration with roller mould, patent documentation 1 (Japanese Patent Laid open No.09-011328) discloses a kind of method, wherein is in continuous resin sheet 31 that the resin under heating and the molten condition obtains and is sandwiched in as shown in Figure 5 between first pressure roller 33 and the transfer roll 34 and is transferred on the continuous resin sheet with the surface configuration with transfer roll by extruding through mould 32 continuously.
Patent documentation 1: the open No.09-011328 of Japanese Patent Laid
Summary of the invention
But, in the conventional method of machining transferring resin sheets, need to reduce transfer speed exactly the surface configuration of transfer roll is transferred on the continuous resin sheet.Therefore, this method potential output is not high.
A target of the present invention provides a kind of method of machining transferring resin sheets and a kind ofly is used for machining transferring resin sheets so that the surface configuration of transfer roll can be transferred to the equipment on the resin sheet accurately and quickly.
The present invention relates to a kind of method of machining transferring resin sheets, the continuous resin sheet of extruding through mould continuously that is under heating and the molten condition is clipped between first pressure roller and second pressure roller, the cooling and second pressure roller are in the continuous resin sheet under the tight contact condition, and subsequently continuous resin sheet is clipped between second pressure roller and the transfer roll adjacent and is transferred on the continuous resin sheet with surface configuration with transfer roll with second pressure roller, form a plurality of grooves in the transfer roll surface and in its cross sectional shape, the bottom land spacing P between the adjacent grooves bottom is set to 10 μ m to 500 μ m and the groove depth H of groove is set to 3 μ m to 500 μ m.
In the method for the machining transferring resin sheets that a preferred embodiment of the present invention relates to, be in that closely to contact the surface temperature that the continuous resin sheet of a side has higher 20 ℃ to 60 ℃ than the resin Vicat softening point (Vicat softening point) of continuous resin sheet with transfer roll.
In the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, the bottom land spacing P between the bottom portion of groove is set to 10 μ m to 200 μ m, and the groove depth H of groove is set to 3 μ m to 200 μ m.
In the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, a plurality of basic semi-circular recesses with basic semicircular sectional shape is molded in the transfer roll surface, adjacent is basic for the bottom land spacing P between the bottom of semi-circular recesses is set to 10 μ m to 200 μ m, and the groove depth H of basic semi-circular recesses is set to 3 μ m to 200 μ m.
And in the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, a plurality of triangular grooves with triangular cross-sectional shape are molded in the transfer roll surface, the angle of triangular groove bottom is set to 40 to 160 degree, and the bottom land spacing P between the adjacent triangular groove bottom is set to 10 μ m to 200 μ m.
And then, in the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, on the transfer roll surface, form matsurface, matsurface has the shape that arithmetic average roughness Ra is 1 to 10 μ m, and 10 mean roughness Rz of irregular matsurface are set to 5 to 50 μ m.
In the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, the bottom land spacing P between the bottom portion of groove is set to larger than 200 μ m and is no more than 500 μ m, and the groove depth H of groove is set to 3 μ m to 500 μ m.
In the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, groove has basic semicircular cross-section shape.
In the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, groove has leg-of-mutton cross sectional shape, and this triangle has 40 ° to 160 ° drift angle.
In the method for the machining transferring resin sheets that another preferred embodiment of the present invention relates to, resin is an acrylic resin, and the bottom land spacing P between the bottom portion of groove is set to 10 μ m to 200 μ m, and the groove depth H of groove is set to 3 μ m to 500 μ m.
And, the present invention relates to a kind of equipment that is used for machining transferring resin sheets, comprising: mould, by mould extrude continuously be in the heating and molten condition under resin to process continuous resin sheet; Pressure roller; And transfer roll, by continuous resin sheet is clipped between pressure roller and the transfer roll surface configuration is transferred on the continuous resin sheet, a plurality of grooves are molded in the transfer roll surface, the bottom land spacing P between the bottom portion of groove be 10 μ m to 500 μ m, and the groove depth H of groove is that 3 μ m are to 500 μ m.
A preferred embodiment of above-mentioned process equipment is a kind of like this process equipment, and its further groove has leg-of-mutton cross sectional shape, and this triangle has 40 ° to 160 ° drift angle.
According to processing method of the present invention or process equipment, the surface configuration of transfer roll can be transferred on the resin sheet accurately and quickly, and thus can high accuracy and high yield ground machining transferring resin sheets.
Above-mentioned and other purpose, feature, application and the advantage of the present invention will be by becoming more apparent below in conjunction with the accompanying drawing detailed description of the invention.
Description of drawings
Fig. 1 is the schematic diagram that the present invention is used for the equipment of machining transferring resin sheets.
Fig. 2 is the schematic diagram of the cross sectional shape on continuous resin sheet surface, above transfer printing the surface configuration of the roller mould that is made of the groove that is provided with on the transfer roll surface of using in the processing method of the present invention is arranged.
Fig. 3 is the schematic diagram of cylindrical lens shape.
Fig. 4 is the schematic diagram of the cross sectional shape on continuous resin sheet surface, above transfer printing the shape of the v-depression that is provided with on the transfer roll surface is arranged.
Fig. 5 is the schematic diagram that is used for the conventional equipment of machining transferring resin sheets.
Description of reference numerals
8: cylindrical lens, 10: extruder, 11: resin sheet, 12: mould, 13: the first pressure rollers, 14: the second pressure rollers, 15: transfer roll
The specific embodiment
Below will introduce processing method of the present invention.Fig. 1 schematically shows the equipment that is used for the machining transferring resin sheets surface configuration.This process equipment comprises mould 12, by it extrude continuously be in the heating and molten condition under resin to obtain continuous resin sheet 11, a pair of pressure roller 13 and 14, and transfer roll 15.Process equipment is transferred on the continuous resin sheet 11 with the surface configuration with transfer roll 15 by continuous resin sheet 11 being clipped between pressure roller 14 transfer roll 15 adjacent with it.Preferably, be in that closely to contact the surface temperature that the continuous resin sheet of a side has higher 20 ℃ to 60 ℃ than resin dimension card (Vicat) softening point of continuous resin sheet with transfer roll.In the present invention, be in and transfer roll closely the surface temperature of the continuous resin sheet of contact one side refer to from close contact to along with the rightabout of sheet material transmission direction away from the zone the point of close contact 50mm in will with a side that transfer roll closely contacts on, the sheet surface temperature of measurement at once before sheet material and transfer roll formation contact.Such surface temperature can use infrared radiation thermometer to measure.
＜resin material 〉
As the resin that in processing method of the present invention, uses, use the thermoplastic resin of fusing when being heated usually, although also can use the thermosetting resin of typing when being heated.The example of resin comprises polystyrene resin, acrylic resin, polyvinyl resin, acrylic resin, cyclic olefin polymerization resin, acrylonitrile-butadiene-styrene (ABS) (ABS) resin, PETG (PET) resin, Merlon (PC) resin etc.And, particularly when acrylic resin is used as resin, can in roller mould, obtain good transfer printing ratio with large-scale bottom land spacing P or groove depth H.
For above-mentioned resin, can add for example astigmatic agent of additive, ultra-violet absorber, heat stabilizer and antistatic additive.The astigmatism agent can be inorganic astigmatic agent or organic astigmatic agent.The example of inorganic astigmatic agent comprises for example particulate of calcium carbonate, barium sulfate, titanium oxide, aluminium hydroxide, silica, unorganic glass, talcum, mica, white carbon, magnesia and zinc oxide of inorganic compound.In order to improve astigmatic ability and similar capabilities, inorganic astigmatic agent can with surface conditioning agent for example aliphatic acid carry out surface treatment.
The particulate that the example of organic astigmatic agent includes organic compounds is particulate, the particulate of acrylate copolymer and the particulate of siloxane polymer of styrene polymer for example.
In resin, adding under the situation of astigmatic agent, aspect astigmatic effect, the absolute value of difference is not less than 0.02 usually between the refractive index of the astigmatic agent that adds and the refractive index of resin, and be not more than 0.2 usually, more preferably be not more than 0.13 aspect the light transmission rate of the transferring resin sheets surface configuration that will obtain.The transferring resin sheets surface configuration of handling with the astigmatic agent that adds resin can be used as astigmatism plate.
＜resin extrusion molded 〉
As the mould 12 of from extruder 10, extruding continuous resin sheet 11, can use metal T shape mould or be used for conventional extrusion molded similar mould as shown in Figure 1.Be used for the extrusion molded extruder of routine in order to extrude the resin that is under heating and the molten condition by mould 12, can to use.Extruder can be single screw extrusion machine or double screw extruder.Resin is heated in extruder, is sent to mould under molten condition, and is extruded subsequently.
Resin under being in heating and molten condition can be carried one type resin and extrude to be individual layer when being extruded by mould to mould, perhaps also can carry two or more types resin and extrudes jointly with stacked state to mould.When two or more types resins are extruded jointly with stacked state, use the feed distribution conduit (not shown) that for example is used for two class three-deckers, and resin is delivered to mould by feed sleeve.Usually, the resin of extruding by mould is continuously extruded with the shape of sheet type, and constitutes continuous resin sheet 11.
The thickness of resin sheet 11 can suitably be regulated according to the application of resulting sheet continuously.For example, when continuous resin sheet 11 was used as astigmatism plate, thickness can be set to 1.0mm to 3.0mm.
＜roller moulding 〉
The continuous resin sheet of extruding continuously by above-mentioned mould 11 is clipped between first pressure roller 13 and second pressure roller 14 simultaneously.Usually, by metal for example metal metallic roll such as stainless steel, iron and steel be used as first pressure roller and second pressure roller, and it typically has a diameter from 100mm to 500mm.
When metallic roll was used as the first above-mentioned pressure roller and second pressure roller, its surface can be coated with for example coating such as chromium, copper, nickel, nickel phosphorus.And roller surface can be a minute surface, and perhaps, if do not need accurate transfer printing, this surface can also be to have for example transfer surface of embossing of irregular grain.
In the present invention, can be connected with the roller that is used to carry the driven roller of continuous resin sheet or is used for molded continuous resin sheet, and such roller can be set between mould 12 and first pressure roller 13 and second pressure roller 14, perhaps can be set to adjacent with second pressure roller 14 when resin sheet 11 contacts with second pressure roller 14 continuously.
Between first pressure roller 13 and second pressure roller 14 the continuous resin sheet 11 of pressurized along with the rotation of second pressure roller 14 with the surface of second pressure roller 14 closely state of contact be transported to the transfer roll 15 adjacent with second pressure roller 14.
Continuously resin sheet 11 is cooled simultaneously and rotates along with the surface that is connected to second pressure roller 14 in that itself and first pressure roller 13 and second pressure roller 14 are contacted.Continuously resin sheet 11 also can be cooled off by environment temperature, and its temperature is become be lower than the temperature that is in when it is extruded by mould under heating and the molten condition.
＜transfer roll 〉
Transfer roll is pressed towards the surface of continuous resin sheet, and its surface configuration is used as reverse mould and is transferred on the continuous resin sheet.
The surface configuration 1 of＜transfer roll 〉
In the surface of above-mentioned transfer roll, form a plurality of grooves, and in its cross sectional shape, be defined as pitch P (the interior summit spacing of resin sheet that just has the upset surface configuration of the bottom land spacing P between the adjacent grooves bottom, below be also referred to as spacing P or pitch P) be set to 10 μ m to 200 μ m, and the groove depth H of groove is set to 3 μ m to 200 μ m.At this, also comprise pitch P just the bottom land spacing be not the situation of steady state value.
Fig. 2 shows the schematic diagram in continuous resin sheet cross section, above transfer printing the surface configuration of transfer roll is arranged, transfer roll is provided with a plurality of semicircular grooves that are generally, what have in its surface moulding is generally the semicircular cross-section shape.Preferably, the adjacent bottom land spacing that is generally between the semicircular bottom portion of groove is set to 10 μ m to 200 μ m, and the above-mentioned groove depth H that is generally semicircular groove is set to 3 μ m to 200 μ m.
If because the spacing P of transfer roll is less than 10 μ m then be difficult to make transfer roll, so spacing P preferably is not less than 30 μ m.On the other hand, if, having the resin sheet of the surface configuration of upset so greater than 200 μ m, spacing P will have coarse surface and ugly outward appearance.And, when the above-mentioned groove depth H that is generally semi-circular recesses is in 3 μ m in the scope of 200 μ m the time, just can process transfer roll at an easy rate.Groove depth H is not less than 10 μ m usually, preferably is not less than 50 μ m.On the other hand, if the above-mentioned groove depth H that is generally semi-circular recesses greater than 200 μ m, so such degree of depth is disadvantageous for accurate transfer surface shape.
Be noted that, preferably, a plurality of triangular grooves with triangular cross-sectional shape can be molded in the surface of above-mentioned transfer roll, the angle at the place, triangular groove bottom that is made of sidewall is set to 40 to 160 degree, and the spacing P between the adjacent triangular groove is set to 10 μ m to 200 μ m.The example of the groove of moulding comprises a plurality of V-shaped grooves that be arranged in parallel in above-mentioned transfer roll surface.The angle at place, V-shaped groove bottom is not more than 160 ° usually, and for the ease of processing, is not less than 40 ° usually.For the ease of the machining transferring roller, V-shaped groove spacing P is not less than 10 μ m usually, preferably is not less than 50 μ m.
Need be on the surface of above-mentioned transfer roll the moulding matsurface, matsurface has the shape that arithmetic average roughness Ra is 1 to 10 μ m, and 10 mean roughness Rz of irregular matsurface are set to 5 to 50 μ m.
The surface configuration 2 of＜transfer roll 〉
In the present invention, for the ease of the surface configuration of machining transferring roller, the spacing P of above-mentioned transfer roll inner groovy is not less than 10 μ m usually, preferably is not less than 50 μ m.In another preferred embodiment of the present invention, flute pitch P be 50 μ m to 500 μ m, more preferably be that 200 μ m also are suitable during to 500 μ m.For such spacing P, the groove depth of groove is preferably 3 μ m to 500 μ m.When satisfying aforesaid spacing P and groove depth, the shape of transfer roll just can be transferred on the continuous resin sheet continuously, even resin sheet is discontented with the temperature range about dimension card (Vicat) softening point that foot is stated continuously.Especially, when above-mentioned spacing P is in 10 μ m in the scope of 200 μ m the time, acrylic resin also can processed the continuous resin sheet that transfer printing effectively has the roller mould shape during as resin.
In a further advantageous embodiment, the common semi-circular recesses with the semicircular in shape of being generally as shown in Figure 2 can be used as an example of above-mentioned roller mould shape.For the ease of the machining transferring roller, the spacing P of adjacent common semi-circular recesses is not less than 10 μ m usually, preferably is not less than 50 μ m, and is fit to be in 50 μ m in the scope of 500 μ m.And, when satisfying above-mentioned spacing P,, just be fit to the transfer surface shape as long as the above-mentioned groove depth H that is generally semi-circular recesses is in 3 μ m in the scope of 500 μ m.In the present invention, because resin sheet is sent to transfer roll along second pressure roller 14 via second pressure roller 14 continuously as mentioned above, and be transferred the surface configuration of transfer roll as shown in fig. 1 subsequently, so the upper limit of depth of groove can be expanded in the processing method of such continuous sheet to 500 μ m.
Above-mentionedly be generally semicircular shape and be not limited to as shown in Figure 2 shape with half arc section, and can be for example as shown in Figure 3 by being parallel to its axis but not comprising the shape of cutting any arc section that cylinder obtained on the plane of axis, or has the semiellipse arc section or as the shape in the open and flat curvature cross section of a semiellipse arc section part.Above-mentioned " being generally semicircular groove " also comprises the groove that has the semicircular sectional shape of being generally as mentioned above.
The groove wherein that the lip-deep roller mould shape of above-mentioned transfer roll is not limited to be provided is provided has the shape of the semicircular sectional shape of being generally, and for example comprise the wherein parallel shape that is provided with a plurality of V-shaped grooves (v-depression) on the transfer roll circumference.In the case, this groove has leg-of-mutton cross sectional shape.The drift angle of V-shaped groove (triangle) is not more than 160 ° usually, and, for the ease of processing, be not less than 40 ° usually.The spacing P of V-shaped groove (triangle) is not less than 10 μ m usually, preferably is not less than aforesaid 50 μ m, so that the machining transferring roller.In another preferred embodiment of the present invention, spacing P is set at 50 μ m in 500 mu m ranges, more preferably is set at 200 μ m in the scope of 500 μ m.
In any one method on machining transferring roller surface, the metallic roll of being made by stainless steel, iron and steel etc. is coated with for example coating such as chromium, copper, nickel, nickel phosphorus, and utilizes diamond cutting tool, metal grinding stone etc. that coating surface is excised processing, laser treatment or chemical etching with machining shape subsequently.But processing method specifically is not confined to these methods.
After processing surface configuration, the surface of transfer roll can for example be coated with coating such as chromium, copper, nickel, nickel phosphorus under the level that does not influence the surface configuration precision.
By as mentioned above the surface configuration of transfer roll being transferred on the continuous resin sheet, just can process transferring resin sheets with target surface shape.Usually, resulting surface forming transferring resin sheets is further cooled and cutting is a multi-disc, is used as the brightness enhancement sheet that for example constitutes liquid crystal display then.And if used the resin that is added with astigmatic agent, resin sheet is used as the astigmatism plate on surface of figure that had transfer printing in the above so.
The shape of the irregular surface of above-mentioned transfer roll comprises for example wherein parallel shape that is provided with a plurality of V-shaped grooves.The drift angle of V-shaped groove is not more than 160 ° usually, and, for the ease of processing, be not less than 40 ° usually.The spacing of V-shaped groove is not less than 10 μ m usually, preferably is not less than 50 μ m, so that the machining transferring roller, and processing method of the present invention is in 10 μ m in spacing and is suitable in the scope of 200 μ m the time.And, when spacing P is set at 50 μ m in 500 mu m ranges, more preferably be set at 200 μ m in the scope of 500 μ m, and depth of groove is when being set to 3 μ m to 500 μ m, can also be with good transfer printing transfer surface shape recently.
＜Vicat softening point 〉
Satisfy under the situation of the surface configuration 1 in the invention described above processing method at transfer roll, be in preferably that closely to contact the surface temperature that the continuous resin sheet of a side has higher 20 ℃ to 60 ℃ than the resin Vicat softening point of above-mentioned continuous resin sheet with above-mentioned transfer roll.Regulate and to be undertaken by the temperature of suitable adjusting transfer roll according to the surface temperature that the Vicat softening point of resin carries out above-mentioned resin sheet, perhaps undertaken by the temperature of regulating second pressure roller 14 rotating speed that a step saves second pressure roller 14 and transfer roll 15 of going forward side by side.Exceed less than 20 ℃ than the resin Vicat softening point of above-mentioned continuous resin sheet if be in surface temperature that above-mentioned transfer roll closely contacts the continuous resin sheet of a side, resin can be cooled and formalize so, and therefore can not fully improve the transfer printing ratio.On the other hand, surpass 60 ℃ if surface temperature exceeds than Vicat softening point, the transfer surface shape will be very difficult so accurately.Especially, when the spacing P of transfer roll surface configuration is 10 μ m during to 200 μ m, above-mentioned effect of the present invention can be arranged on as mentioned above by the temperature with continuous resin sheet to exceed under 20 ℃ to 60 ℃ the temperature than Vicat softening point and be represented better.
Embodiment
Below, with reference to embodiment the present invention is carried out more detailed introduction.Should notice that the present invention is not limited thereto.
＜raw material 〉
Light-transmissive resin A: styrene resin (refractive index: 1.59, Vicat softening point: 106.8 ℃)
Light-transmissive resin B:MS resin (styrene: methyl methacrylate=80 part quality: 20 parts of quality, refractive index: 1.57, Vicat softening point: 102.1 ℃)
Crystalline resins C1: the propylene-ethylene random vinyl chloride (by " FSX20L8 " that Sumitomo ChemicalCo.Ltd produces, propylene unit content: be no less than 99% of quality, the ethene unit content: be not more than quality 1%)
Ultra-violet absorber: benzotriazole UV absorbers (2,2 '-methylene-two-[6-(the 2H-BTA-2-yl)-4-(1,1,3, the 3-tetramethyl butyl)-phenol] (by " the ADK STAB LA31 " of ADEKA company production))
Light stabilizer: hindered amine as light stabilizer (by Chiba Specialty Chemicals Co., " the Tinuvin XT 855FF " that Ltd. produces)
Nucleator: the phosphate nucleator (2,2 '-methylene-two-(4, the 6-di-tert-butyl-phenyl) sodium phosphate (by " the ADK STAB NA11 " of ADEKA company production))
Antioxidant: phosphorus antioxidant (three (2, the 4-di-tert-butyl-phenyl) phosphite (by ChibaSpecialty Chemicals Co., " Irg168 " that Ltd. produces))
＜masterbatch 〉
The crystalline resins C1 of superficial layer masterbatch MA:98.7 part quality, 0.5 the ultra-violet absorber (LA31) of part quality, 0.5 being dried, the light stabilizer (Tinuvin XT 855FF) of part quality, the antioxidant (Irg168) of the nucleator of 0.1 part of quality (ADK STAB NA11) and 0.2 part of quality mix to obtain mixture.This mixture is introduced in the hopper of 65mm double screw extruder, in cylinder body, be melted and mix with 225 ℃ to 260 ℃ temperature, and be squeezed in the wire harness subsequently and granulating to obtain granular superficial layer masterbatch MA.
The crystalline resins C1 of intermediate layer masterbatch MB:94.0 part quality, the antioxidant (Irg168) of the nucleator of 2.0 parts of quality (ADK STAB NA11) and 4.0 parts of quality are dried and mix to obtain mixture.This mixture is introduced in the hopper of 65mm double screw extruder, in cylinder body, be melted and mix with 225 ℃ to 260 ℃ temperature, and be squeezed in the wire harness subsequently and granulating to obtain granular intermediate layer masterbatch MB.
＜transfer roll 1 〉
Semi-circular recesses: in embodiment and Comparative Examples, except as otherwise noted, otherwise the repetition cross sectional shape (Fig. 2) that is generally semi-circular recesses that is provided with in the surface of transfer roll is that to have spacing (P) be 118.2 (μ m), flat part width (d) between the bossing is 15.2 (μ m), from groove height (H) to the limit is 48.5 (μ m), and the ratio of (A=H/P) is 0.41 cylindrical lens shape between height and the width, and wherein groove part be arranged in parallel with fixed intervals (spacing).Here, cylindrical lens also is known as the cylinder lens, is the lens (referring to Fig. 3) that a kind of wherein at least one surface has a part of cylindrical shape, and cylindrical lens has for example by vertically cylinder being divided into the shape that two parts obtain.
Matsurface: the matsurface that is provided with on the whole surface of roller mould has the shape that arithmetic average roughness Ra is 7.55 μ m, and matsurface has 10 the mean roughness Rz of 39.17 μ m and the average length Sm of 114 μ m.
＜embodiment 1 〉
Light-transmissive resin A is melted by first extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.Light-transmissive resin B is melted by second extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.
Under 260 ℃ extrusion resin temperature, mix extrusion modling so that the resin of delivering to feed sleeve from first extruder can be used as (the main stor(e)y both sides) superficial layer from the resin that second extruder is delivered to feed sleeve as main stor(e)y, and utilize pressure roller to push and cool off.Thus, can process 2.0mm thick by the three continuous resin sheets (S1) made of lamination layer by layer.
Between above-mentioned shaping period, use two pressure rollers, and first pressure roller is set at upside and second pressure roller is set at downside so that continuous resin sheet is sent from extruder.And, when carrying continuous resin sheet (S1) and second pressure roller closely contacts, it is cooled off, and between second pressure roller and transfer roll, push subsequently.In the case, the periphery on transfer roll surface forms and is generally semicircular groove, and the upset shape that is generally semi-circular recesses is transferred to the upside of continuous resin sheet (S1) superficial layer.Thus, just can access the resin sheet (S1) of surface configuration transfer printing.
Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 95 ℃, and the temperature of second pressure roller (b) is set at 105 ℃, and the temperature of transfer roll (c) is set at 108 ℃.And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.58rpm.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 127 ℃.The transfer printing ratio of the shape on the above-mentioned resin sheet (S1) that is transferred to the surface configuration transfer printing is 79%.Use infrared radiation thermometer to measure the surface temperature of above-mentioned resin.
The estimation of the resin sheet of＜surface configuration transfer printing 〉
The resin sheet (S1) of the surface configuration transfer printing that obtains is cut, and minute surface fine finishining is carried out in its cross section handled.Subsequently, use the distance (N) of extra accuracy shape measure microscope (" VK-8500 " that produce by Keyence company) with the summit of measuring from the groove to the transfer printing upset shape that is generally semi-circular recesses from the teeth outwards.Then, according to the distance (H) on distance (N) and the summit from groove to the roller mould cross sectional shape, the formula (1) below utilizing calculates transfer printing than β (%):
β＝N/H×100(％) (1)
Table 1 shows its result.
＜embodiment 2 〉
Be similar to the operation among the embodiment 1, but between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 95 ℃, the temperature of second pressure roller (b) is set at 103 ℃, and the temperature of transfer roll (c) is set at 107 ℃.And two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.65rpm, and obtains the thick continuous resin sheet (S2) of 2.0mm thus.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 135 ℃.The transfer printing ratio of the shape on the above-mentioned resin sheet (S2) that is transferred to the surface configuration transfer printing is 75%.
＜embodiment 3 〉
Light-transmissive resin A is melted by first extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.Light-transmissive resin B is melted by second extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.
Under 260 ℃ extrusion resin temperature, mix extrusion modling so that the resin of delivering to feed sleeve from first extruder can be used as (the main stor(e)y both sides) superficial layer from the resin that second extruder is delivered to feed sleeve as main stor(e)y, and utilize pressure roller to push and cool off.Thus, can process 2.0mm thick by the three continuous resin sheets (S3) made of lamination layer by layer.
Between above-mentioned shaping period, use two pressure rollers, and first pressure roller is set at upside and second pressure roller is set at downside so that continuous resin sheet is sent from extruder.And, when carrying continuous resin sheet (S3) and second pressure roller closely contacts, it is cooled off, and between second pressure roller and transfer roll, push subsequently.
In the case, above-mentioned matsurface is molded on the whole surface of transfer roll, and the upset shape of matsurface is transferred to the upside of the superficial layer of continuous resin sheet (S3).Thus, just can access the resin sheet (S3) of surface configuration transfer printing.
Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 95 ℃, and the temperature of second pressure roller (b) is set at 95 ℃, and the temperature of transfer roll (c) is set at 109 ℃.And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.59rpm.
Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 130 ℃.Shape on the above-mentioned resin sheet (S3) that is transferred to the surface configuration transfer printing has the Ra of 4.16 μ m and the Rz of 20.6 μ m, and matsurface has the average length Sm of 173 μ m.
＜Comparative Examples 1 〉
Use two pressure rollers when obtaining continuous resin sheet (S4) in the operation that is similar to embodiment 1, and first pressure roller is set at upside and transfer roll is set at downside so that continuous resin sheet is sent from extruder, as shown in Figure 5.And, when carrying continuous resin sheet (S4) and transfer roll closely contacts, it is cooled off, and between the transfer roll and second pressure roller, push subsequently.
In the case, the periphery on transfer roll surface forms and is generally semicircular groove, and the upset shape that is generally semi-circular recesses is transferred to the downside of continuous resin sheet (S4) superficial layer.Thus, just can access the resin sheet (S4) of the thick surface configuration transfer printing of 2.0mm.
Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 95 ℃, and the temperature of second pressure roller (b) is set at 108 ℃, and the temperature of transfer roll (c) is set at 105 ℃.And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.58rpm.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 255 ℃.The transfer printing ratio of the shape on the above-mentioned resin sheet (S4) that is transferred to the surface configuration transfer printing is 39.0%.
＜Comparative Examples 2 〉
Use two pressure rollers when obtaining continuous resin sheet (S5) in the operation that is similar to embodiment 1, and first pressure roller is set at upside and transfer roll is set at downside so that continuous resin sheet is sent from extruder, as shown in Figure 5.And, when carrying continuous resin sheet (S5) and transfer roll closely contacts, it is cooled off, and between the transfer roll and second pressure roller, push subsequently.
In the case, the periphery on transfer roll surface forms and is generally semicircular groove, and the upset shape that is generally semi-circular recesses is transferred to the downside of continuous resin sheet (S5) superficial layer.Thus, just can access the resin sheet (S5) of the thick surface configuration transfer printing of 2.0mm.
Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 95 ℃, and the temperature of second pressure roller (b) is set at 108 ℃, and the temperature of transfer roll (c) is set at 105 ℃.And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.65rpm.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 255 ℃.The transfer printing ratio of the shape on the above-mentioned resin sheet (S5) that is transferred to the surface configuration transfer printing is 24.0%.
＜Comparative Examples 3 〉
Light-transmissive resin A is melted by first extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.Light-transmissive resin B is melted by second extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.
Under 260 ℃ extrusion resin temperature, mix extrusion modling so that the resin of delivering to feed sleeve from first extruder can be used as (the main stor(e)y both sides) superficial layer from the resin that second extruder is delivered to feed sleeve as main stor(e)y, and utilize pressure roller to push and cool off.Thus, can process 2.0mm thick by the three continuous resin sheets (S6) made of lamination layer by layer.
Between above-mentioned shaping period, use two pressure rollers, and first pressure roller is set at upside and second pressure roller is set at downside so that continuous resin sheet is sent from extruder.And, when carrying continuous resin sheet (S6) and second pressure roller closely contacts, it is cooled off, and between second pressure roller and transfer roll, push subsequently.In the case, above-mentioned matsurface is molded on the whole surface of transfer roll, and the upset shape of matsurface is transferred to the upside of the superficial layer of continuous resin sheet (S6).Thus, just can access the resin sheet (S6) of the thick surface configuration transfer printing of 2.0mm.Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 90 ℃, and the temperature of second pressure roller (b) is set at 94 ℃, and the temperature of transfer roll (c) is set at 110 ℃.
And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.59rpm.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 115 ℃.Shape on the above-mentioned resin sheet (S6) that is transferred to the surface configuration transfer printing has the Ra of 1.61 μ m and the Rz of 8.86 μ m, and matsurface has the average length Sm of 306 μ m.
＜Comparative Examples 4 〉
Use two pressure rollers when obtaining continuous resin sheet (S7) in the operation that is similar to embodiment 1, and first pressure roller is set at upside and transfer roll is set at downside so that continuous resin sheet is sent from extruder.And, when carrying continuous resin sheet (S7) and transfer roll closely contacts, it is cooled off, and between the transfer roll and second pressure roller, push subsequently.
In the case, above-mentioned matsurface is molded on the whole surface of transfer roll, and the upset shape of matsurface is transferred to the upside of the superficial layer of continuous resin sheet (S7).Thus, just can access the resin sheet (S7) of the thick surface configuration transfer printing of 2.0mm.
Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 82 ℃, and the temperature of second pressure roller (b) is set at 110 ℃, and the temperature of transfer roll (c) is set at 92 ℃.And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.55rpm.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 245 ℃.Shape on the above-mentioned resin sheet (S7) that is transferred to the surface configuration transfer printing has the Ra of 2.60 μ m and the Rz of 11.70 μ m, and matsurface has the average length Sm of 252 μ m.
＜Comparative Examples 5 〉
Use two pressure rollers when obtaining continuous resin sheet (S8) in the operation that is similar to embodiment 1, and transfer roll is set at upside and first pressure roller is set at downside so that continuous resin sheet is sent from extruder.And, when carrying continuous resin sheet (S8) and first pressure roller closely contacts, it is cooled off, and between first pressure roller and second pressure roller, push subsequently.
In the case, above-mentioned matsurface is molded on the whole surface of transfer roll, and the upset shape of matsurface is transferred to the upside of the superficial layer of continuous resin sheet (S8).Thus, just can access the resin sheet (S8) of surface configuration transfer printing.
Between above-mentioned shaping period, the temperature of first pressure roller (a) is set at 95 ℃, and the temperature of second pressure roller (b) is set at 97 ℃, and the temperature of transfer roll (c) is set at 110 ℃.And, two pressure rollers, the rotating speed (r) of a transfer roll and a resin reception roller is set at 0.55rpm.Being in the surface temperature of resin between above-mentioned shaping period that closely contacts a side with transfer roll is 245 ℃.Shape on the above-mentioned resin sheet (S8) that is transferred to the surface configuration transfer printing has the Ra of 0.82 μ m and the Rz of 2.93 μ m, and matsurface has the average length Sm of 532 μ m.
[table 1]
[table 2]
In " position of transfer roll " hurdle of table 1 and table 2, word " first " expression transfer roll is set to the mould of close extruder, word " second " expression transfer roll is set to second near mould, and word " the 3rd " expression transfer roll is set to the 3rd near mould.For embodiment 1 to 3 and Comparative Examples 3, the first rollers are first pressure rollers, and second roller is second pressure roller, and the 3rd roller is a transfer roll, as shown in Figure 1.For Comparative Examples 1,2 and 4, for convenience's sake, the temperature of the roller in " second pressure roller " hurdle is represented the temperature of transfer roll, and the temperature of the roller in " transfer roll " hurdle is represented the temperature of second pressure roller.
＜how to measure arithmetic average roughness Ra 〉
According to JIS B0601-1994 arithmetic average roughness Ra is measured.Particularly, utilize surface roughometer (" SJ-201P " that produce by Mitutoyo) that the arithmetic average roughness Ra of the matsurface of the resin sheet of the matsurface of roller mould and surface configuration transfer printing is measured.As the measuring condition of surface roughometer, cutoff value is set to 2.5 * 5.
＜how to measure 10 mean roughness Rz 〉
According to JIS B0601-1994 10 mean roughness Rz are measured.Particularly, utilize surface roughometer (" SJ-201P " that produce by Mitutoyo) that 10 mean roughness Rz of the matsurface of the resin sheet of the matsurface of roller mould and surface configuration transfer printing are measured.As the measuring condition of surface roughometer, cutoff value is set to 2.5 * 5.
＜how to measure average length Sm 〉
According to JIS B0601-1994 average length Sm is measured.Particularly, utilize surface roughometer (" SJ-201P " that produce by Mitutoyo) that the average length Sm of the matsurface of the resin sheet of the matsurface of roller mould and surface configuration transfer printing is measured.As the measuring condition of surface roughometer, cutoff value is set to 2.5 * 5.
＜estimation result 1 〉
In embodiment 1 and Comparative Examples 1, the resin temperature before the transfer printing is set at 127 ℃ and 255 ℃ respectively, and the reception rotating speed is set to constant rotational speed (0.58rpm).Because the resin temperature in the Comparative Examples 1 is much higher than the Vicat softening point (102.1 ℃) of resin, so shape transferred thereon is 39% than only.
In embodiment 2 and Comparative Examples 2, the resin temperature before the transfer printing is set at 135 ℃ and 255 ℃ respectively, and the reception rotating speed is set to constant rotational speed (0.65rpm).Because the resin temperature in the Comparative Examples 2 is much higher than the Vicat softening point (102.1 ℃) of resin, so shape transferred thereon is 24% than only.
In embodiment 3 and Comparative Examples 3, the resin temperature before the transfer printing is set at 130 ℃ and 115 ℃ respectively, and the reception rotating speed is set to constant rotational speed (0.59rpm).Because the difference between the resin temperature in the Comparative Examples 3 and the Vicat softening point (102.1 ℃) of resin is approximately 13 ℃, less than 20 ℃, so little than among the embodiment 3 of the roughness Ra of matsurface and Rz.
＜transfer roll 2 〉
And then, be generally semicircular groove A to D and have the shape that is used to constitute transfer roll shown in the table 3 respectively.In table 3, P, be generally some distances of the repetition cross sectional shape of semi-circular recesses shown in d and the H presentation graphs 2, and the distance between " spacing P " expression adjacent grooves bottom, the width of the flat part between " the width d of flat part " expression adjacent grooves, and the outer rim on " groove depth H " expression roller mould surface and the distance between the flat part.And, the ratio between " aspect ratio " expression groove depth H and the spacing P, just H/P.Each is generally semicircular groove A to D and all has the shape of above-mentioned cylindrical lens.
V-depression: table 5 shows the cross sectional shape of the repetition of the v-depression of moulding in roller mould (Fig. 4) respectively.Distance between " spacing P " expression adjacent grooves bottom, " groove depth H " represents the vertical range of groove drift angle, and the summit angle (drift angle) of " Θ " expression V-shaped groove.Each v-depression E shown in the table 5 has the shape of rib lens (rectangle lens pillar) to H, and every type groove part is with the fixing parallel moulding in interval (spacing P), as shown in Figure 4.
Below, introduce wherein and will above-mentionedly be generally the embodiment that semicircular groove A to D and V-shaped groove E to H are used as the transfer roll surface configuration respectively.
＜embodiment 4 〉
Light-transmissive resin A is melted by first extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 250 ℃, and is sent to feed sleeve.Light-transmissive resin B is melted by second extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 250 ℃, and is sent to feed sleeve.
Under 250 ℃ extrusion resin temperature, mix extrusion modling so that the light-transmissive resin A that delivers to feed sleeve from first extruder can be used as (the main stor(e)y both sides) superficial layer from the light-transmissive resin B that second extruder is delivered to feed sleeve as main stor(e)y, and utilize the pressure roller shown in Fig. 1 to push and cool off.Thus, can process 2.0mm thick by the three continuous resin sheets (S9) made of lamination layer by layer.
At the continuous resin sheet of processing when (S9), for continuous resin sheet is extruded from extruder, first pressure roller 13 is set at the sheet material upside and second pressure roller 14 is set at the sheet material downside.Resin sheet is extruded between first pressure roller 13 and second pressure roller 14 continuously, is delivered to subsequently with the surface of second pressure roller 14 closely to contact, and cools off at this moment.
Subsequently, the continuous resin sheet of extruding between the transfer roll 15 that roller mould is housed on second pressure roller 14 and its surface.In the surface of transfer roll 15, form and as shown in table 3ly be generally semicircular groove A as roller mould.During pushing between second pressure roller 14 and the transfer roll 15, the upset shape that is generally semicircular groove A is transferred to the upside of continuous resin sheet (S9) superficial layer as mentioned above.Thus, just can access the resin sheet (S9) of surface configuration transfer printing.
During above-mentioned processing, the surface temperature of first pressure roller 13 is adjusted to 70 ℃, and the surface temperature of second pressure roller 14 is adjusted to 88 ℃, and the surface temperature of transfer roll 15 is adjusted to 94 ℃.
The shape transferred thereon that the resin sheet (S9) of the surface configuration transfer printing that obtains among the embodiment 4 is gone up the shape of transfer printing is 90.4% than T.
＜embodiment 5 〉
Be similar to the operation among the embodiment 4, but be set to 1.5mm, and obtain thus by the three continuous resin sheets (S10) made of lamination layer by layer by the thickness of regulating by the continuous resin sheet of pressure roller applied pressure.In the case, on the outer rim on transfer roll 15 surfaces, form and be generally semicircular groove A, and the upset shape that is generally semicircular groove A is transferred to the upside of continuous resin sheet (S10) superficial layer.Thus, just can access the resin sheet (S10) of surface configuration transfer printing.
The shape transferred thereon that the resin sheet (S10) of the surface configuration transfer printing that obtains among the embodiment 5 is gone up the shape of transfer printing is 96.1% than T.
＜embodiment 6 〉
Light-transmissive resin A is melted by the 3rd extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 250 ℃, and is sent to feed sleeve.Light-transmissive resin B is melted by the 4th extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 250 ℃, and is sent to feed sleeve.
Under 250 ℃ extrusion resin temperature, mix extrusion modling so that the light-transmissive resin A that delivers to feed sleeve from the 3rd extruder can be used as (the main stor(e)y both sides) superficial layer from the light-transmissive resin B that the 4th extruder is delivered to feed sleeve as main stor(e)y, and utilize pressure roller to push and cool off.Thus, can process 2.0mm thick by the three continuous resin sheets (S11) made of lamination layer by layer.
During above-mentioned processing, use three pressure rollers, and first pressure roller 13 is set at upside and second pressure roller 14 is set at downside so that continuous resin sheet is extruded from extruder.And, when carrying continuous resin sheet (S11) and second pressure roller, 14 tight contacts, it is cooled off, be delivered to subsequently with transfer roll 15 and closely contact, and receive by the 4th pressure roller (not shown) subsequently.In the case, do not pushing continuous resin sheet between second pressure roller 14 and the transfer roll 15 and between second pressure roller 15 and the 4th pressure roller, and leaving the gap therebetween.
On the outer rim on above-mentioned transfer roll surface, form and be generally semicircular groove B, and the upset shape that is generally semicircular groove B is transferred to the upside of continuous resin sheet (S11) superficial layer.Thus, just can access the resin sheet (S11) of surface configuration transfer printing.
During above-mentioned processing, the surface temperature of first pressure roller 13 is set at 78 ℃, and the surface temperature of second pressure roller 14 is set at 78 ℃, and the surface temperature of transfer roll 15 is set at 98 ℃.
The shape transferred thereon that the resin sheet (S11) of the surface configuration transfer printing that obtains among the embodiment 6 is gone up the shape of transfer printing is 78.6% than T.
＜embodiment 7 〉
Be similar to the operation among the embodiment 6, but be set to 1.5mm by the thickness of regulating by the continuous resin sheet of pressure roller applied pressure, and obtain thus 1.5mm thick by the three continuous resin sheets (S12) made of lamination layer by layer.
On the outer rim on transfer roll 15 surfaces, form and be generally semicircular groove B, and the upset shape that is generally semicircular groove B is transferred to the upside of continuous resin sheet (S12) superficial layer.Thus, just can access the resin sheet (S12) of surface configuration transfer printing.
The shape transferred thereon that the resin sheet (S12) of the surface configuration transfer printing that obtains among the embodiment 7 is gone up the shape of transfer printing is 92.8% than T.
＜Comparative Examples 6 〉
Be similar to the operation among the embodiment 5, but roller mould is set on the surface of second pressure roller 34 rather than is arranged on the transfer roll and changed chilling temperature, and obtain the thick continuous resin sheet (S13) of 1.5mm thus.When carrying continuous resin sheet (S13) and second pressure roller 34 that is used as transfer roll closely contacts, it is cooled off, and receive by the 3rd pressure roller 35 subsequently.In the case, between transfer roll and the 3rd pressure roller 35, leave the gap, and between these rollers, do not push continuous resin sheet.
On the outer rim on above-mentioned transfer roll surface, form and be generally semicircular groove C, and the upset shape that is generally semicircular groove C is transferred to the downside of continuous resin sheet (S13) superficial layer.Thus, just can access the resin sheet (S13) of surface configuration transfer printing.
During above-mentioned processing, the surface temperature of first pressure roller 33 is set at 50 ℃, and the surface temperature of second pressure roller 34 (transfer roll) is set at 80 ℃, and the surface temperature of the 3rd pressure roller 35 is set at 90 ℃.
The shape transferred thereon that the resin sheet (S13) of the surface configuration transfer printing that obtains in the Comparative Examples 6 is gone up the shape of transfer printing is 30.0% than T.
＜embodiment 8 〉
Be similar to the operation among the embodiment 4, but change roller mould and chilling temperature, and roller mould is set on the 3rd pressure roller (referring to Fig. 1) and utilizes pressure roller and transfer roll pushes and cools off.Thus, obtain 2.0mm thick by the three continuous resin sheets (S14) made of lamination layer by layer.
On the outer rim on transfer roll surface, form and be generally semicircular groove C, and the upset shape that is generally semicircular groove C is transferred to the downside of continuous resin sheet (S14) superficial layer.Thus, just can access the resin sheet (S14) of surface configuration transfer printing.
During above-mentioned processing, the surface temperature of first pressure roller 13 is set at 70 ℃, and the surface temperature of second pressure roller 14 is set at 108 ℃, and the surface temperature of the 3rd pressure roller 15 is set at 88 ℃.
The shape transferred thereon that the resin sheet (S14) of the surface configuration transfer printing that obtains among the embodiment 8 is gone up the shape of transfer printing is 40.0% than T.
＜Comparative Examples 7 〉
Be similar to the operation among the embodiment 6, be generally semicircular groove D, and obtain the resin sheet (S15) of the thick surface configuration transfer printing of 1.5mm thus but on the outer rim on transfer roll surface, form.
The shape transferred thereon that the resin sheet (S15) of the surface configuration transfer printing that obtains in the Comparative Examples 7 is gone up the shape of transfer printing is 48.0% than T.
＜embodiment 9 〉
Be similar to the operation among the embodiment 8, be generally semicircular groove D, and obtain the resin sheet (S16) of the thick surface configuration transfer printing of 2.0mm thus but on the outer rim on transfer roll surface, form.
The shape transferred thereon that the resin sheet (S16) of the surface configuration transfer printing that obtains among the embodiment 9 is gone up the shape of transfer printing is 65.0% than T.
＜embodiment 10 〉
The intermediate layer masterbatch MB of the crystalline resins C1 of 95 parts of quality and the 5 parts of quality mixing that is dried is melted by first extruder then and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.Superficial layer masterbatch MA is melted by second extruder and mixes, and wherein the temperature in the cylinder body is 190 ℃ to 260 ℃, and is sent to feed sleeve.
Under 250 ℃ extrusion resin temperature, mix extrusion modling so that from first extruder deliver to the crystalline resins C1 of feed sleeve and intermediate layer masterbatch MB can be as main stor(e)y and deliver to the superficial layer masterbatch MA of feed sleeve from second extruder can be as the two sides (superficial layer) of main stor(e)y, and utilize the pressure roller shown in Fig. 1 to push and cool off.Thus, can process 1.5mm thick by the three continuous resin sheets (S17) made of lamination layer by layer.
During processing continuous resin sheet (S17), for continuous resin sheet is extruded from extruder, first pressure roller 13 is set at the sheet material upside and second pressure roller 14 is set at the sheet material downside.Resin sheet is extruded between first pressure roller 13 and second pressure roller 14 continuously, is delivered to subsequently with the surface of second pressure roller 14 closely to contact, and cools off at this moment.
Subsequently, the continuous resin sheet of extruding between the transfer roll 15 that roller mould is housed on second pressure roller 14 and its surface.In transfer roll 15, form v-depression E as shown in table 5 as roller mould.During pushing between second pressure roller 14 and the transfer roll 15, the projection of the v-depression E shown in Fig. 4 and the upset shape that recess is reversed are transferred to the upside of continuous resin sheet (S17) superficial layer as mentioned above.Thus, just can access the resin sheet (S17) of surface configuration transfer printing.
During above-mentioned processing, the surface temperature of first pressure roller 13 is adjusted to 80 ℃, and the surface temperature of second pressure roller 14 is adjusted to 78 ℃, and the surface temperature of transfer roll 15 is adjusted to 115 ℃.
＜embodiment 11 〉
According to the resin sheet (S18) of embodiment 10 finished surface shape transferred thereons, wherein form the transfer roll of the F of v-depression shown in the table 5 as roller mould but use.
＜embodiment 12 〉
According to the resin sheet (S19) of embodiment 10 finished surface shape transferred thereons, wherein form the transfer roll of the G of v-depression shown in the table 5 as roller mould but use.
＜embodiment 13 〉
According to the resin sheet (S20) of embodiment 10 finished surface shape transferred thereons, wherein form the transfer roll of the H of v-depression shown in the table 5 as roller mould but use.
＜embodiment 14 〉
Be similar to the operation among the embodiment 10, but be set to 1.0mm, and obtain resin sheet (S21) thus by the three lamination surface configuration transfer printings of making layer by layer by regulating by pressure roller applied pressure and the thickness that changes the continuous resin sheet of surface temperature of pressure roller.In the case, on the outer rim on transfer roll 15 surfaces, form the v-depression E shown in the table 5 as roller mould, and the projection of the v-depression E shown in Fig. 4 and upset shape that recess is reversed are transferred to the upside of continuous resin sheet (S21) superficial layer.Thus, just can access the resin sheet (S21) of surface configuration transfer printing.
During above-mentioned processing, the surface temperature of first pressure roller 13 is adjusted to 100 ℃, and the surface temperature of second pressure roller 14 is adjusted to 98 ℃, and the surface temperature of transfer roll 15 is adjusted to 119 ℃.
＜embodiment 15 〉
According to the resin sheet (S22) of embodiment 14 finished surface shape transferred thereons, wherein form the transfer roll of the F of v-depression shown in the table 5 as roller mould but use.
＜embodiment 16 〉
According to the resin sheet (S23) of embodiment 14 finished surface shape transferred thereons, wherein form the transfer roll of the G of v-depression shown in the table 5 as roller mould but use.
＜embodiment 17 〉
According to the resin sheet (S24) of embodiment 14 finished surface shape transferred thereons, wherein form the transfer roll of the H of v-depression shown in the table 5 as roller mould but use.
[table 3]
| Be generally semicircular groove | Spacing P (μ m) | The width d of flat part (μ m) | Groove depth H (μ m) | Aspect ratio A |
| A | 248.1 | 26.5 | 114.8 | 0.46 |
| B | 272.1 | 29.6 | 115.3 | 0.42 |
| C | 87.0 | 17.0 | 41.0 | 0.47 |
| D | 140.0 | 15.0 | 50.0 | 0.36 |
[table 4]
[table 5]
| V-depression | Spacing P (μ m) | Groove depth H (μ m) | Θ (°) |
| E | 100 | 100 | 50 |
| F | 100 | 34 | 110 |
| G | 200 | 200 | 50 |
| H | 200 | 66 | 110 |
[table 6]
In table 4 and table 6, word " first ", " second " and " the 3rd " in " temperature of roller " hurdle correspond respectively to the pressure roller shown in Fig. 1 or Fig. 5.For example, in Fig. 1, " first " roller is first pressure roller 13, and " second " roller is second pressure roller 14, and " the 3rd " roller is the 3rd pressure roller (transfer roll among the embodiment 15 just).
Can find out from the result shown in table 4 and the table 6, the resin sheet (S17 to S24) of the surface configuration transfer printing that processes in embodiment 10 to 17 all has 95% shape transferred thereon ratio, and be among all embodiment in transfer printing than outstanding especially aspect (transfer printing performance).
According to the method and apparatus that is used for machining transferring resin sheets of the present invention, surface configuration can accurately and apace be transferred on the sheet material.Therefore, transferring resin sheets can be used widely, and for example is used as the diffusion sheet of LCDs.
Although introduced and illustrated the present invention in detail, should be expressly understood that these contents are only used for diagram and should be used as restriction for example, protection scope of the present invention should make an explanation according to appended patent claims.
Claims (12)
1, a kind of method of machining transferring resin sheets, the continuous resin sheet of extruding through mould continuously that is under heating and the molten condition is clipped between first pressure roller and second pressure roller, cooling and described second pressure roller are in the described continuous resin sheet under the tight contact condition, and subsequently described continuous resin sheet is clipped between described second pressure roller and the transfer roll adjacent and is transferred on the continuous resin sheet with surface configuration with transfer roll with second pressure roller
Form a plurality of grooves in the described transfer roll surface and in its cross sectional shape, the bottom land spacing P between the adjacent grooves bottom is set to 10 μ m to 500 μ m and the groove depth H of groove is set to 3 μ m to 500 μ m.
2, the method for machining transferring resin sheets as claimed in claim 1 is in wherein that closely to contact the surface temperature that the continuous resin sheet of a side has higher 20 ℃ to 60 ℃ than the resin Vicat softening point of described continuous resin sheet with described transfer roll.
3, the method for machining transferring resin sheets as claimed in claim 2, the bottom land spacing P between the wherein said bottom portion of groove is set to 10 μ m to 200 μ m, and the groove depth H of described groove is set to 3 μ m to 200 μ m.
4, the method for machining transferring resin sheets as claimed in claim 2, the a plurality of basic semi-circular recesses that wherein has basic semicircular sectional shape is molded in the surface of described transfer roll, adjacent is basic for the described bottom land spacing P between the bottom of semi-circular recesses is set to 10 μ m to 200 μ m, and the described groove depth H of described basic semi-circular recesses is set to 3 μ m to 200 μ m.
5, the method for machining transferring resin sheets as claimed in claim 2, the a plurality of triangular grooves that wherein have triangular cross-sectional shape are molded in the surface of described transfer roll, the angle of triangular groove bottom is set to 40 to 160 degree, and the bottom land spacing P between the adjacent triangular groove bottom is set to 10 μ m to 200 μ m.
6, the method for machining transferring resin sheets as claimed in claim 2, wherein on the surface of described transfer roll, form matsurface, matsurface has the shape that arithmetic average roughness Ra is 1 to 10 μ m, and 10 mean roughness Rz of described irregular matsurface are set to 5 to 50 μ m.
7, the method for machining transferring resin sheets as claimed in claim 1, the bottom land spacing P between the wherein said bottom portion of groove is set to larger than 200 μ m and is no more than 500 μ m, and the groove depth H of groove is set to 3 μ m to 500 μ m.
8, the method for machining transferring resin sheets as claimed in claim 7, wherein said groove have basic semicircular cross-section shape.
9, the method for machining transferring resin sheets as claimed in claim 7, wherein said groove has leg-of-mutton cross sectional shape, and this triangle has 40 ° to 160 ° drift angle.
10, the method for machining transferring resin sheets as claimed in claim 7, wherein said resin is an acrylic resin, the bottom land spacing P between the described bottom portion of groove is set to 10 μ m to 200 μ m, and the groove depth H of described groove is set to 3 μ m to 500 μ m.
11, a kind of equipment that is used for machining transferring resin sheets comprises:
Mould, by mould extrude continuously be in the heating and molten condition under resin to process continuous resin sheet;
Pressure roller; With
Transfer roll is transferred to surface configuration on the described continuous resin sheet by described continuous resin sheet is clipped between pressure roller and the transfer roll,
A plurality of grooves are molded in the described transfer roll surface, the bottom land spacing P between the bottom of described groove be 10 μ m to 500 μ m, and the groove depth H of described groove is that 3 μ m are to 500 μ m.
12, the equipment of machining transferring resin sheets as claimed in claim 11, wherein said groove has leg-of-mutton cross sectional shape, and this triangle has 40 ° to 160 ° drift angle.
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| JP2008040195 | 2008-02-21 | ||
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| JP2008048347 | 2008-02-28 | ||
| JP2008200980 | 2008-08-04 |
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| CN101513772A true CN101513772A (en) | 2009-08-26 |
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| CNA2009100078908A Pending CN101513772A (en) | 2008-02-21 | 2009-02-20 | Method and apparatus for machining transferring resin sheets |
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| CN101850610A (en) * | 2010-06-01 | 2010-10-06 | 成都域虹科技有限责任公司 | Embossing roller and plastic plate transmissive viewing screen |
| CN102310560A (en) * | 2010-07-01 | 2012-01-11 | 住友化学株式会社 | The manufacturing approach of resin sheet |
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