EP0666185B1 - Method and device for fabricating a book cover - Google Patents
Method and device for fabricating a book cover Download PDFInfo
- Publication number
- EP0666185B1 EP0666185B1 EP95100338A EP95100338A EP0666185B1 EP 0666185 B1 EP0666185 B1 EP 0666185B1 EP 95100338 A EP95100338 A EP 95100338A EP 95100338 A EP95100338 A EP 95100338A EP 0666185 B1 EP0666185 B1 EP 0666185B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- melt adhesive
- hot melt
- forming tool
- cover sheet
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42C—BOOKBINDING
- B42C7/00—Manufacturing bookbinding cases or covers of books or loose-leaf binders
Definitions
- the invention relates to a method for producing a Cover cover according to the preamble of claim 1 and a device for Implementation of this method according to the preamble of claim 6.
- Cover binders of the above type usually consist of a cover spine and adjoining it via folds Cover covers on the front and back. They are mostly out Cardboard made, with the cover on the front can also consist of a transparent plastic. Bindings of this type are for example in DE-PS 25 28 225 and DE-OS 22 37 583 described.
- Hot melt adhesive There is a stripe on the inside of the back cover Hot melt adhesive applied.
- hot melt adhesives are included Room temperature, but - depending on the composition - plastic at temperatures between 70 ° C and 190 ° C. After Subsequent cooling, the hot melt adhesive takes firm again State, whereby this process can be repeated several times.
- the above properties of the hot melt adhesive are used in Binding sheets of paper in such a cover exploited.
- the paper sheets with their Longitudinal edges in the standing upright on their spine Cover blanket inserted so that the long edges on the still solid hot melt adhesive.
- the cover is in brought a binding device, such as from the DE-OS 27 43 685 is known.
- the cover is in this device with a back on a hot plate holding the hot melt adhesive through the back of the cover until it is plastified heated. After the transition to the plastic state, they penetrate Paper sheets in the hot melt adhesive so that their edges of be enclosed in the hot melt adhesive. Afterwards Cool the paper sheets firmly with the back of the cover connected.
- DE-OS 29 37 171 is a generic method for discloses the production of cover binders, in which the liquefied hot melt adhesive directly from an extruder nozzle the cover spine is applied.
- the disadvantage is that due to the surface tension of the liquid hot melt adhesive the hot melt adhesive applied regardless of the shape of the Extruder nozzle always takes on a caterpillar shape and thus towards the center of the hot melt adhesive strip is thicker than on its sides. The result of this is that when you later integrate it, the outside and therefore the most stressed paper sheets are held in a too thin hot melt adhesive layer and themselves therefore easily solve. In addition, the paper sheets before the Heating the hot melt adhesive will slide out or itself at least unevenly slant, which is also is undesirable. Also for perfect integration The exact positioning of the hot melt adhesive is not possible can be achieved to the desired extent. Finally, it fails Process even with very narrow hot melt adhesive application Widths around and under 1 mm.
- the hot melt adhesive is up today in the form of a solid stripe on the cover spine placed on and under the influence of pressure and heat or using an additional adhesive glued. This can be done by hand or through a process happen as described in DE-OS 30 10 642.
- the disadvantage here is that this method with a considerable manufacturing effort is purchased. This is for one caused by the fact that in the form of rolls or sheets existing raw material for the hot melt adhesive is more expensive than the raw material for the liquid application. On the other hand arises additional effort due to the previous shaping of the Hot melt adhesive in the desired strip shape.
- the invention has for its object a method for Manufacture a cover folder to provide with which one Hot melt adhesive strips of the desired shape with little Expenses and failures can be applied. Another The task is to carry out this procedure to find a suitable device.
- the first object is achieved in that the Hot melt adhesive after at least partial application on the cover sheet, preferably using a molding tool is reshaped.
- the method according to the invention is based on the consideration from that the liquid or plastic hot melt adhesive after the Apply to the cover sheet with this immediately an intimate Connection enters into before it begins to cool and close solidify. Thus there is a firm connection between Hot melt adhesive strips and back cover guaranteed. On the the other side cools the free surface of the Strip of hot-melt adhesive to form a thin skin, the adhesiveness of the hot melt adhesive with the Cooling decreases. In the subsequent forming of the Hot melt adhesive strip with a molding tool attached to the attacks the free surface, the hot melt adhesive will not adhere to the mold. This procedure allows the hot melt adhesive strip by appropriate training of To give the mold virtually any cross section desired.
- Forming the one applied to the cover sheet Hot melt adhesive can according to the invention both after complete application of the hot melt adhesive strip as well already with the application of part of the Hot melt adhesive can be performed.
- the key is with that Forming the hot melt adhesive strip that the plastic Hot melt adhesive before forming on the cover sheet has been applied.
- the Hot melt adhesive before applying to the cover sheet on a Temperature is heated above its solidification temperature and below the temperature of its complete liquefaction lies. This is the knowledge that belongs to the invention based on the fact that it is not necessary to use the hot melt adhesive so to be applied in liquid form so that it is on the cover sheet of self-distributed. By reshaping the hot melt adhesive strip namely, with a molding tool, it becomes uniform Distribution generated.
- the invention further provides that on the cover sheet applied hot melt adhesive strips before forming on it free surface is cooled until there is a thin layer of solidified hot melt adhesive is formed. Thereby it is ensured that the hot melt adhesive on the with the Mold coming into contact with its surface Has lost adhesion properties so far that the subsequent forming without undesirable adherence of the Hot melt adhesive can be performed on the mold. It also ensures that the formed Hot melt adhesive strips by the surface tension of the free Surface does not take on caterpillar shape again by itself.
- a device for performing the above Method is through a forming device for reshaping the Hot melt adhesive after application to the cover sheet, wherein the forming device is a mold and a May have pressing device for pressing the mold.
- the mold of a stamp blanket and at least two Side walls limited and is on a lower long side and open on two faces. It is especially from Advantage if the mold end face end face walls having. In this way, after pressing the Mold achieves a closed shape, the one particularly precise positioning and shaping of the Hot melt adhesive strip causes.
- the side walls of the mold are expediently designed as Bending edges for embossing folds in the cover sheet at Forming the hot-melt adhesive strip. Leave with it the forming of the hot melt adhesive strip and the application fold the cover folder in one operation.
- the pressing device faces the open long side of the mold with a support surface the lower edges of the side walls of the mold opposite grooves. This will make the seal between the mold and the work surface improved.
- the same purpose is served by an elastic design Support surface.
- the hot melt adhesive can by appropriate training of Any desired cross-section can be given. It is particularly advantageous to use the mold on its Central longitudinal axis to a lower height than at the edges give. It is particularly beneficial if his stamp cover is arched downward towards the central longitudinal axis, because this way the hot melt adhesive strip on the side, on which the paper sheet edges stand when binding come, has a trough-shaped depression in cross section. This will remove the paper sheets before plasticizing the Hot melt adhesive strip brought together towards the middle. Furthermore is the hot melt adhesive strip on the long edges where the Paper sheets are particularly exposed to high loads thickest, which improves the hold of the paper sheets. After all, this opens up the possibility of low Hot melt adhesive thicknesses to work, so hot melt adhesive save.
- the device for performing the invention can also be carried out using a provided at least one rotatably mounted roller Mold and a feed device for the mold to be marked.
- a feed device for the mold to be marked.
- the mold has a role with a particular circumferential groove for forming the hot melt adhesive strip having.
- a role With the one above the hot melt adhesive strip moving mold, the role continues to rotate and that in contact with the hot melt adhesive strip when forming come surface section of the roll cools on the Ambient air. This remains during the forming of the Hot melt adhesive strip always on lower roll Temperature, causing the tendency of the hot melt adhesive at the Adhesion role is reduced. This will disrupt the Avoided production flow and the throughput of the device according to the invention increased.
- the Groove a larger diameter in the area of their center line has than than at its edges, it is ensured that the Hot melt adhesive strips on the side on which the Paper sheet edges come to rest when binding, in Cross-section has a trough-shaped depression. This will the sheets of paper brought together towards the middle and also held together.
- the hot melt adhesive application is to the Long edges where the paper sheets are particularly tall Exposed to the thickest, causing the hold of the Paper sheets is improved. Finally, this opens up the Possibility to work with small hot melt adhesive thicknesses, so Save hot melt adhesive.
- the role is on both sides the groove has a circumferential embossing ring for embossing folds has in the cover folder.
- the molding tool has two Rollers that are also supported on axles that Extensions essentially coincide. With such The molding tool will roll particularly precisely with respect to one Supported surface of the mold, resulting in a desired shape of the hot melt adhesive strip results.
- the device according to the invention is in Mold between the rollers at least one down and Open recess on two ends for reshaping the Hot melt adhesive strip provided.
- a Forming the molding tool with the hot melt adhesive strip formed a fixed mold part.
- a movable mold part for reshaping the Hot melt adhesive strip is advantageous because it is movable Mold parts through intensive contact with the Hot melt adhesive can be so dirty that it is in their Mobility can be restricted.
- the mold and feed device along the Conveyor path of a conveyor belt are arranged.
- mold and feed device can complete the production of the binders automatically and with very high speed. This is especially so the case when the binders that come with a Hot melt adhesive strips should be provided automatically this conveyor belt will be put on. This increases the Throughput of the devices according to the invention.
- the device (1) shown in perspective in FIG. (1) has a conveyor belt (2) with two conveyor belts (3), the placed over a drive roller (4) and a deflection roller (5) are.
- the drive roller (4) which has an electric motor (6) is driven, and the deflection roller (5) are arranged that the straight sections extending between them the conveyor belt (3) is horizontal.
- the above straight sections of the conveyor belt (3) are through a flat Support plate (7) supported.
- With the electric motor switched on (6) the drive roller (4) rotates in the view shown clockwise what is shown by the Rotation direction arrow (8) is clarified.
- a finished cover folder (13) the one Hot melt adhesive strips (14) in the desired shape and furthermore has folds (15) which cover the two covers (16) separate from the back cover (17), from the conveyor belt (2) be removed.
- the feed device (9) with which the hot-melt adhesive strip (10) is applied to the cover sheet (11) has one thermostatically controlled heating container (18), the liquefied Contains hot melt adhesive.
- the liquefied hot melt adhesive is from a pump (19) via a line (20) Piston metering device (21) supplied by a Heater (22) kept at such a high temperature is that the thermoplastic hot melt adhesive in the plastic Condition through a hot melt adhesive nozzle (23) as a caterpillar Hot melt adhesive strip (10) emerges.
- the piston metering device (21) and the electric motor (6) are connected in such a way that at the beginning of the funding process the piston metering device (21) starts the conveyor belt (2) and the cover sheet (11) at a constant speed under the Hot melt adhesive nozzle (23) conveyed so that the Hot melt adhesive strip (10) has a uniform cross section. If the piston metering device is set correctly (21) and conveyor belt (2) begins the hot-melt adhesive strip (10) on one side edge of the cover sheet (11) and ends at the opposite edge.
- the forming device (12) has a press carrier (24) which is above the Conveyor belt (2) extends transversely to it.
- On a cantilever Leg of the press carrier (24) is one at the bottom hydraulic piston press (25) arranged on the piston (26) a molding tool (27) is attached, the length of which is equal to Width of the cover sheet (11) is.
- the molding tool (27) is pressed by the piston press (25) onto the cover sheet (11) and forms the cover sheet (11) with that attached to it Hot melt adhesive strips (10) into the cover folder (13). This is after lifting the mold (27) by a Movement of the conveyor belt (2) further promoted and can then Conveyor belt (2) can be removed.
- Figure (2) shows a cross section through the Feeder (9) standing cover sheet (11) and through the Support plate (7) with a view of the feed device (9), from only the hot melt adhesive nozzle (23) in the figure shown see is.
- Figure (3) is the cover sheet (11) with the applied Hot melt adhesive strips (10) under the forming device (12) shown, of which only the mold (27) is shown.
- the mold (27) from a stamp cover (28) and two Side walls (29) limited, on the lower edge of two Bending edges (30) are formed.
- the cover sheet (11) is positioned under the mold (27).
- Figure (4) shows that by reshaping the cover sheet (11) and the cover (13) of the hot-melt adhesive strip (10) with the hot-melt adhesive strip (14) trapezoidal cross-section.
- the mold (27) still rests on the Hot melt adhesive strips (14). As you can clearly see, it fills Hot melt adhesive strips the entire of the stamp cover (28), the side walls (29) and the back cover (17) formed cavity.
- the bending edges (30) press the Cover sheet (11) in the grooves (31) and form the folds (15).
- Figure (5) finally shows the finished binder (13), which essentially consist of the hot-melt adhesive strips (14) with a trapezoidal cross-section on the cover spine (17) and the two cover covers (16), which by folds (15) are separated from the back cover (17).
- FIG (6) shows a further device (32) for production a cover folder according to the inventive method.
- the Device (32) has a conveyor belt (33) with conveyor belts (34), which are driven by a drive roller (35) and are guided over a deflection roller (36).
- the driving role (35) is flanged to an electric motor (37).
- the conveyor belt (33) has a support plate (38) which the upper sections between the drive roller (35) and Deflection roller (36) extending conveyor belt (34) supported.
- a Feed device (39) In which a cover sheet (40) with a caterpillar-shaped hot-melt adhesive strip (41) is provided, and a forming device (42) arranged on the Binding (40) folds (43) attaches and Hot melt adhesive strip (41) into a hot melt adhesive strip (44) formed with a trapezoidal cross-section.
- the feed device (39) has a heating container (45) which contains liquid thermoplastic hot melt adhesive, and a Pump (46), which the liquid hot melt adhesive via a line (47) feeds a metering device (48). Directly to the Dosing device (48) closes a hot melt adhesive nozzle (49) on by an electric heating element (50) on a is kept so high that the by the Hot melt adhesive nozzle (49) at least emerging hot melt adhesive is plastically deformable.
- the feed device (39) is in a feed device (51) integrated, which essentially consisting of a hydraulic piston drive (52) and one on two Linear guides (53) mounted bracket (54). The Bracket (54) with a piston (55) of the piston drive (52) connected.
- the piston drive (52) also stands with the feed device (39) in connection that from the Hot melt adhesive nozzle (49) emerges from hot melt adhesive exactly when the feed device (51) feeds the holder (54) in Gear sets.
- the feed device (51) still the forming device (52) integrated.
- the Forming device (52) is in the longitudinal direction of the Conveyor belt (33) seen as far from that Feeder (39) removes the distance between the distances two hot melt adhesive strips (41) on adjacent ones Binding folder sheets (40) corresponds. That way ensures that with a feed movement the Feed device (51) on a cover sheet (40) Hot melt adhesive strip (41) is applied while simultaneously on the in the conveying direction of the conveyor belt (33) closest cover sheet of hot melt adhesive strips (44) and the folds (43) are formed.
- FIG (7) shows a molding tool (56) as a detail of Forming device (42).
- the molding tool (56) has on it Bottom of a rotatably mounted roller (57).
- the role (57) is in the middle with a circumferential groove (58) provided while encircling on both sides of the groove Embossing rings (59) are attached to the roll.
- In the Support plate (38) have two grooves (60) so that the Embossing rings (59) when the feed device (51) moves in run these grooves (60).
- the between mold (56) and Support plate (38) inserted cover sheet (40) is thus with provided two folds (43).
- the Hot melt adhesive strips (41) through the groove (58) when turning the Roll (57) in a hot melt adhesive strip (44) with reshaped trapezoidal cross-section.
- Figure (8) shows a further mold (61), which on its Has two rotatably mounted rollers (62) on the underside.
- the Rolls (62) are each with an embossing ring on their circumference (63).
- the embossing rings (63) roll when the Forming tool (61) through the feed device (51) in the Grooves (60) of the support plate (38). With a between Molding tool (61) and support plate (38) inserted cover sheet (40) folds (43) are embossed in this way.
- Between Rolling (62) is a trapezoidal in the mold (61) Recess (64) for reshaping the hot-melt adhesive strip (41) intended.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Coating Apparatus (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Einbanddecke gemäß dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zur Durchführung dieses Verfahrens gemäß dem Oberbegriff des Anspruchs 6.The invention relates to a method for producing a Cover cover according to the preamble of claim 1 and a device for Implementation of this method according to the preamble of claim 6.
Einbandmappen der vorstehenden Gattung bestehen gewöhnlich aus einem Einbandrücken und sich daran über Falze anschließenden Einbanddeckeln an der Vorder- und Rückseite. Sie sind meist aus Karton gefertigt, wobei der Einbanddeckel auf der Vorderseite auch aus einem durchsichtigen Kunststoff bestehen kann. Einbände dieser Art sind beispielsweise in der DE-PS 25 28 225 und der DE-OS 22 37 583 beschrieben.Cover binders of the above type usually consist of a cover spine and adjoining it via folds Cover covers on the front and back. They are mostly out Cardboard made, with the cover on the front can also consist of a transparent plastic. Bindings of this type are for example in DE-PS 25 28 225 and DE-OS 22 37 583 described.
Auf der Innenseite des Einbandrückens ist ein Streifen aus Schmelzkleber aufgebracht. Solche Schmelzkleber sind bei Raumtemperatur fest, werden jedoch - je nach Zusammensetzung - bei Temperaturen zwischen 70°C und 190°C plastisch. Nach anschließender Abkühlung nimmt der Schmelzkleber wieder festen Zustand ein, wobei dieser Vorgang mehrfach wiederholbar ist.There is a stripe on the inside of the back cover Hot melt adhesive applied. Such hot melt adhesives are included Room temperature, but - depending on the composition - plastic at temperatures between 70 ° C and 190 ° C. After Subsequent cooling, the hot melt adhesive takes firm again State, whereby this process can be repeated several times.
Die vorstehenden Eigenschaften des Schmelzklebers werden beim Binden von Papierblättern in einer solchen Einbanddecke ausgenutzt. Hierzu werden die Papierblätter mit ihren Längskanten in die aufrecht auf ihrem Einbandrücken stehende Einbanddecke eingelegt, so daß die Längskanten auf dem noch festen Schmelzkleber aufliegen. Dann wird die Einbanddecke in ein ein Bindegerät gebracht, wie es beispielsweise aus der DE-OS 27 43 685 bekannt ist. In diesem Gerät steht der Einband mit einem Rücken auf einer Heizplatte, die den Schmelzkleber durch den Einbandrücken hindurch bis zur Plastifizierung erhitzt. Nach Übergang in den plastischen Zustand dringen die Papierblätter in den Schmelzkleber ein, so daß deren Kanten von dem Schmelzkleber umschlossen werden. Nach anschließendem Abkühlen sind die Papierblätter fest mit dem Einbandrücken verbunden.The above properties of the hot melt adhesive are used in Binding sheets of paper in such a cover exploited. For this, the paper sheets with their Longitudinal edges in the standing upright on their spine Cover blanket inserted so that the long edges on the still solid hot melt adhesive. Then the cover is in brought a binding device, such as from the DE-OS 27 43 685 is known. The cover is in this device with a back on a hot plate holding the hot melt adhesive through the back of the cover until it is plastified heated. After the transition to the plastic state, they penetrate Paper sheets in the hot melt adhesive so that their edges of be enclosed in the hot melt adhesive. Afterwards Cool the paper sheets firmly with the back of the cover connected.
In der DE-OS 29 37 171 ist ein gattungsgemäßes Verfahren für die Herstellung von Einbandmappen offenbart, bei dem der verflüssigte Schmelzkleber aus einer Extruderdüse direkt auf den Einbandrücken aufgebracht wird. Von Nachteil ist dabei, daß aufgrund der Oberflächenspannung des flüssigen Schmelzklebers der aufgetragene Schmelzkleber unabhängig von der Form der Extruderdüse stets eine Raupenform annimmt und somit zur Mitte des Schmelzkleberstreifens hin dicker ist als an dessen Seiten. Dies hat zur Folge, daß beim späteren Einbinden gerade die außenliegenden und daher am meisten beanspruchten Papierblätter in einer zu dünnen Schmelzkleberschicht gehalten sind und sich demnach leicht lösen. Zudem können die Papierblätter vor dem Erhitzen des Schmelzklebers nach außen rutschen oder sich zumindest ungleichmäßig schräg stellen, was gleichfalls unerwünscht ist. Auch die für ein einwandfreies Einbinden notwendige exakte Positionierung des Schmelzklebers kann nicht in erwünschtem Maße erreicht werden. Schließlich versagt das Verfahren auch bei sehr schmalen Schmelzkleberauftrag mit Breiten um und unter 1 mm.DE-OS 29 37 171 is a generic method for discloses the production of cover binders, in which the liquefied hot melt adhesive directly from an extruder nozzle the cover spine is applied. The disadvantage is that due to the surface tension of the liquid hot melt adhesive the hot melt adhesive applied regardless of the shape of the Extruder nozzle always takes on a caterpillar shape and thus towards the center of the hot melt adhesive strip is thicker than on its sides. The result of this is that when you later integrate it, the outside and therefore the most stressed paper sheets are held in a too thin hot melt adhesive layer and themselves therefore easily solve. In addition, the paper sheets before the Heating the hot melt adhesive will slide out or itself at least unevenly slant, which is also is undesirable. Also for perfect integration The exact positioning of the hot melt adhesive is not possible can be achieved to the desired extent. Finally, it fails Process even with very narrow hot melt adhesive application Widths around and under 1 mm.
In einem in der EP-OS 0 176 844 offenbarten Verfahren wird die Herstellung eines exakt positionierten, über Länge, Breite und Querschnitt gleichmäßigen Schmelzkleberstreifens beschrieben. Dafür wird der Schmelzkleber in erhitztem Zustand in eine Form eingebracht und der Einbandrücken in diese Form gepreßt. Von Nachteil bei diesem Verfahren ist dabei, daß der flüssig in die Form eingebrachte Schmelzkleber oft besser an der Form haftet als am nachfolgend in die Form gepreßten Einbandrücken. In einem laufenden Fertigungsprozeß ist dies sehr störend, weil dann der laufende Fertigungsprozeß unterbrochen werden muß, um die Form von Schmelzkleberresten zu reinigen.In a method disclosed in EP-OS 0 176 844 the Manufacturing an exactly positioned, across length, width and Cross section of uniform hot melt adhesive strip described. For this purpose, the hot melt adhesive is heated in a mold introduced and the cover spine pressed into this shape. From The disadvantage of this method is that the liquid in the Molded hot melt adhesive often adheres better to the mold as on the cover spine subsequently pressed into the form. In a running manufacturing process this is very annoying because then the ongoing manufacturing process must be interrupted in order to to clean the shape of hot melt adhesive residue.
Um diese Nachteile zu vermeiden, wird der Schmelzkleber bis heute in Form eines festen Streifens auf den Einbandrücken aufgelegt und auf diesen unter Einwirkung von Druck und Hitze oder unter Verwendung eines zusätzlichen Klebstoffes aufgeklebt. Dies kann in Handarbeit oder durch ein Verfahren geschehen, wie es in der DE-OS 30 10 642 beschrieben ist. Nachteilig ist dabei, daß dieses Verfahren mit einem erheblichen Herstellungsaufwand erkauft wird. Dieser ist zum einen dadurch bedingt, daß das in Form von Rollen oder Blätter vorliegende Rohmaterial für den Schmelzkleber teurer ist als das Rohmaterial für den flüssigen Auftrag. Zum anderen entsteht zusätzlicher Aufwand durch die vorhergehende Umformung des Schmelzklebers in die gewünschte Streifenform.To avoid these disadvantages, the hot melt adhesive is up today in the form of a solid stripe on the cover spine placed on and under the influence of pressure and heat or using an additional adhesive glued. This can be done by hand or through a process happen as described in DE-OS 30 10 642. The disadvantage here is that this method with a considerable manufacturing effort is purchased. This is for one caused by the fact that in the form of rolls or sheets existing raw material for the hot melt adhesive is more expensive than the raw material for the liquid application. On the other hand arises additional effort due to the previous shaping of the Hot melt adhesive in the desired strip shape.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen einer Einbandmappe bereitzustellen, mit dem sich ein Schmelzkleberstreifen gewünschter Form mit geringem Kostenaufwand und störungssicher aufbringen läßt. Eine weitere Aufgabe besteht darin, eine zur Durchführung dieses Verfahrens geeignete Vorrichtung zu finden.The invention has for its object a method for Manufacture a cover folder to provide with which one Hot melt adhesive strips of the desired shape with little Expenses and failures can be applied. Another The task is to carry out this procedure to find a suitable device.
Die erste Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schmelzkleber nach dem zumindest teilweisen Aufbringen auf den Einbandbogen vorzugsweise mit Hilfe eines Formwerkzeugs umgeformt wird. The first object is achieved in that the Hot melt adhesive after at least partial application on the cover sheet, preferably using a molding tool is reshaped.
Das erfindungsgemäße Verfahren geht dabei von der Überlegung aus, daß der flüssige oder plastische Schmelzkleber nach dem Aufbringen auf den Einbandbogen mit diesem sofort eine innige Verbindung eingeht, bevor er beginnt, abzukühlen und sich zu verfestigen. Somit ist eine feste Verbindung zwischen Schmelzkleberstreifen und Einbandrücken gewährleistet. Auf der anderen Seite kühlt die freie Oberfläche des Schmelzkleberstreifens unter Bildung einer dünnen Haut ab, wobei die Adhäsionsfähigkeit des Schmelzklebers mit der Abkühlung abnimmt. Beim nachfolgenden Umformen des Schmelzkleberstreifens mit einem Formwerkzeug, das an der freien Oberfläche angreift, wird der Schmelzkleber also nicht an dem Formwerkzeug anhaften. Dabei erlaubt dieses Verfahren dem Schmelzkleberstreifen durch entsprechend Ausbildung des Formwerkzeugs praktisch jeden gewünschten Querschnitt zu geben.The method according to the invention is based on the consideration from that the liquid or plastic hot melt adhesive after the Apply to the cover sheet with this immediately an intimate Connection enters into before it begins to cool and close solidify. Thus there is a firm connection between Hot melt adhesive strips and back cover guaranteed. On the the other side cools the free surface of the Strip of hot-melt adhesive to form a thin skin, the adhesiveness of the hot melt adhesive with the Cooling decreases. In the subsequent forming of the Hot melt adhesive strip with a molding tool attached to the attacks the free surface, the hot melt adhesive will not adhere to the mold. This procedure allows the hot melt adhesive strip by appropriate training of To give the mold virtually any cross section desired.
Das Umformen des auf den Einbandbogen aufgebrachten Schmelzklebers kann erfindungsgemäß sowohl nach dem vollständigen Aufbringen des Schmelzkleberstreifens als auch bereits unmittelbar mit dem Aufbringen eines Teils des Schmelzklebers durchgeführt werden. Entscheidend ist bei dem Umformen des Schmelzkleberstreifens, daß der plastische Schmelzkleber vor dem Umformvorgang auf den Einbandbogen aufgetragen worden ist.Forming the one applied to the cover sheet Hot melt adhesive can according to the invention both after complete application of the hot melt adhesive strip as well already with the application of part of the Hot melt adhesive can be performed. The key is with that Forming the hot melt adhesive strip that the plastic Hot melt adhesive before forming on the cover sheet has been applied.
In Ausbildung der Erfindung ist vorgesehen, daß das Formwerkzeug während oder nach dem Umformen in Längsrichtung und/oder Querrichtung des Schmelzkleberstreifens bewegt wird. Dies ist insbesondere dann von Vorteil, wenn der aufgebrachte Schmelzkleberstreifen in seiner Längsrichtung ungleichmäßig aufgetragen wurde. Durch die Längsbewegung des Formwerkzeugs wird nämlich Schmelzkleber von Stellen mit Kleberüberschuß zu Stellen mit zu wenig Schmelzkleber transportiert, so daß im Ergebnis ein gleichmäßiger Schmelzkleberauftrag erreicht wird.In an embodiment of the invention it is provided that Longitudinal molding tool during or after forming and / or the transverse direction of the hot-melt adhesive strip is moved. This is particularly advantageous if the one applied Hot melt adhesive strips uneven in its longitudinal direction was applied. Through the longitudinal movement of the mold becomes hot melt adhesive from places with excess adhesive Places transported with too little hot melt adhesive, so that in The result is an even application of hot melt adhesive.
In weiterer Ausbildung der Erfindung ist vorgesehen, daß der Schmelzkleber vor dem Aufbringen auf den Einbandbogen auf eine Temperatur erhitzt wird, die über seiner Erstarrungstemperatur und unter der Temperatur seiner vollständigen Verflüssigung liegt. Dem liegt die zur Erfindung gehörende Erkenntnis zugrunde, daß es nicht erforderlich ist, den Schmelzkleber so flüssig aufzutragen, daß er sich auf dem Einbandbogen von selbst verteilt. Durch das Umformen des Schmelzkleberstreifens mit einem Formwerkzeug wird nämlich eine gleichmäßige Verteilung erzeugt.In a further embodiment of the invention it is provided that the Hot melt adhesive before applying to the cover sheet on a Temperature is heated above its solidification temperature and below the temperature of its complete liquefaction lies. This is the knowledge that belongs to the invention based on the fact that it is not necessary to use the hot melt adhesive so to be applied in liquid form so that it is on the cover sheet of self-distributed. By reshaping the hot melt adhesive strip namely, with a molding tool, it becomes uniform Distribution generated.
Die Erfindung sieht ferner vor, daß der auf den Einbandbogen aufgebrachte Schmelzkleberstreifen vor dem Umformen an seiner freien Oberfläche so lange abgekühlt wird, bis sich dort eine dünne Schicht erstarrten Schmelzklebers gebildet ist. Dadurch wird gewährleistet, daß der Schmelzkleber an der mit dem Formwerkzeug in Berührung kommenden Oberfläche seine Adhäsionseigenschaften soweit verloren hat, daß das anschließende Umformen ohne unerwünschtes Anhaften des Schmelzklebers am Formwerkzeug durchgeführt werden kann. Desweiteren wird damit sichergestellt, daß der umgeformte Schmelzkleberstreifen durch die Oberflächenspannung der freien Oberfläche nicht von selbst wieder Raupenform annimmt.The invention further provides that on the cover sheet applied hot melt adhesive strips before forming on it free surface is cooled until there is a thin layer of solidified hot melt adhesive is formed. Thereby it is ensured that the hot melt adhesive on the with the Mold coming into contact with its surface Has lost adhesion properties so far that the subsequent forming without undesirable adherence of the Hot melt adhesive can be performed on the mold. It also ensures that the formed Hot melt adhesive strips by the surface tension of the free Surface does not take on caterpillar shape again by itself.
Eine Vorrichtung zur Durchführung des vorbeschriebenen Verfahrens ist durch eine Umformeinrichtung zum Umformen des Schmelzkleber nach dem Aufbringen auf den Einbandbogen, wobei die Umformeinrichtung ein Formwerkzeug und eine Preßvorrichtung zum Anpressen des Formwerkzeugs aufweisen kann.A device for performing the above Method is through a forming device for reshaping the Hot melt adhesive after application to the cover sheet, wherein the forming device is a mold and a May have pressing device for pressing the mold.
In einer Ausgestaltung der erfindungsgemäßen Vorrichtung wird das Formwerkzeug von einer Stempeldecke und wenigstens zwei Seitenwänden begrenzt und ist an einer unteren Längsseite und an zwei Stirnseiten offen. Dabei ist es insbesondere auch von Vorteil, wenn das Formwerkzeug stirnseitig Stirnseitenwände aufweist. Auf diese Weise wird nach dem Anpressen des Formwerkzeugs eine geschlossene Form erzielt, die eine besonders genaue Positionierung und Formgebung des Schmelzkleberstreifens bewirkt.In one embodiment of the device according to the invention the mold of a stamp blanket and at least two Side walls limited and is on a lower long side and open on two faces. It is especially from Advantage if the mold end face end face walls having. In this way, after pressing the Mold achieves a closed shape, the one particularly precise positioning and shaping of the Hot melt adhesive strip causes.
Zweckmäßigerweise sind die Seitenwände des Formwerkzeugs als Biegekanten zum Einprägen von Falzen in den Einbandbogen beim Umformen des Schmelzkleberstreifens ausgebildet. Damit lassen sich das Umformen des Schmelzkleberstreifens und das Aufbringen der Falze der Einbandmappe in einem Arbeitsgang durchführen.The side walls of the mold are expediently designed as Bending edges for embossing folds in the cover sheet at Forming the hot-melt adhesive strip. Leave with it the forming of the hot melt adhesive strip and the application fold the cover folder in one operation.
In Ausbildung der Erfindung weist die Preßeinrichtung gegenüber der offenen Längsseite des Formwerkzeugs eine Stützfläche mit den Unterkanten der Seitenwände des Formwerkzeugs gegenüberliegenden Nuten auf. Dadurch wird die Abdichtung zwischen dem Formwerkzeug und der Arbeitsfläche verbessert. Gleichem Zweck dient eine elastische Ausbildung der Stützfläche.In an embodiment of the invention, the pressing device faces the open long side of the mold with a support surface the lower edges of the side walls of the mold opposite grooves. This will make the seal between the mold and the work surface improved. The same purpose is served by an elastic design Support surface.
Dem Schmelzkleber kann durch entsprechende Ausbildung des Formwerkzeugs jeder gewünschte Querschnitt gegeben werden. Besonders vorteilhaft ist es, dem Formwerkzeug an seiner Mittellängsachse eine geringere Höhe als an den Rändern zu geben. Es ist insbesondere von Vorteil, wenn seine Stempeldecke zur Mittellängsachse hin bogenförmig nach unten gewölbt ist, weil auf diese Weise der Schmelzkleberstreifen auf der Seite, auf die die Papierblätterkanten beim Einbinden zu stehen kommen, im Querschnitt eine muldenförmige Vertiefung aufweist. Dadurch werden die Papierblätter vor dem Plastifizieren des Schmelzkleberstreifens zur Mitte hin zusammengeführt. Außerdem ist der Schmelzkleberstreifen an den Längsseitenrändern, wo die Papierblätter besonders hohen Belastungen ausgesetzt sind, am dicksten, wodurch der Halt der Papierblätter verbessert wird. Schließlich eröffnet dies die Möglichkeit, mit geringen Schmelzkleberdicken zu arbeiten, also Schmelzkleber einzusparen.The hot melt adhesive can by appropriate training of Any desired cross-section can be given. It is particularly advantageous to use the mold on its Central longitudinal axis to a lower height than at the edges give. It is particularly beneficial if his stamp cover is arched downward towards the central longitudinal axis, because this way the hot melt adhesive strip on the side, on which the paper sheet edges stand when binding come, has a trough-shaped depression in cross section. This will remove the paper sheets before plasticizing the Hot melt adhesive strip brought together towards the middle. Furthermore is the hot melt adhesive strip on the long edges where the Paper sheets are particularly exposed to high loads thickest, which improves the hold of the paper sheets. After all, this opens up the possibility of low Hot melt adhesive thicknesses to work, so hot melt adhesive save.
Die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens kann auch durch ein mit wenigstens einer drehbar gelagerten Rolle versehenes Formwerkzeug und eine Vorschubeinrichtung für das Formwerkzeug gekennzeichnet sein. Bei einer derartigen Vorrichtung ist es insbesondere von Vorteil, daß das Aufbringen des Schmelzklebers auf den Einbandbogen und das anschließende Umformen mit im wesentlichen gleichsinnigen Vorschubbewegungen durchgeführt werden kann und trotzdem eine exakte Positionierung und Formung des Schmelzkleberstreifens bewirkt wird. Insbesondere bei einer Massenfertigung von Einbandmappen wirkt sich dies auch vorteilhaft auf die Fertigungsdauer einer Einbandmappe aus.The device for performing the invention The procedure can also be carried out using a provided at least one rotatably mounted roller Mold and a feed device for the mold to be marked. With such a device it is particularly advantageous that the application of the hot melt adhesive on the cover sheet and the subsequent forming with im carried out essentially same-directional feed movements can still be an exact positioning and shaping of the hot-melt adhesive strip is effected. Especially with one Mass production of cover binders also affects this advantageous to the production time of a cover folder.
In Ausgestaltung dieser Vorrichtung ist desweiteren vorgesehen, daß das Formwerkzeug eine Rolle mit insbesondere einer umlaufenden Nut zur Umformung des Schmelzkleberstreifens aufweist. Bei der Verwendung einer derartigen Rolle wirkt es sich besonders günstig aus, daß beim Umformen des Schmelzkleberstreifens immer nur ein relativ geringer Anteil des Umfangs der Rolle mit dem Schmelzkleberstreifen in Berührung kommt. Mit dem über dem Schmelzkleberstreifen weiterbewegten Formwerkzeug dreht sich die Rolle weiter und das beim Umformen mit dem Schmelzkleberstreifen in Berührung gekommene Oberflächenteilstück der Rolle kühlt an der Umgebungsluft ab. Dadurch bleibt während des Umformens des Schmelzkleberstreifens die Rolle stets auf niedriger Temperatur, wodurch die Neigung des Schmelzklebers, an der Rolle anzuhaften, vermindert wird. Dadurch werden Störungen im Produktionsablauf vermieden und der Durchsatz der erfindungsgemäßen Vorrichtung erhöht.In an embodiment of this device it is further provided that that the mold has a role with a particular circumferential groove for forming the hot melt adhesive strip having. When using such a role, it works is particularly favorable that when the Only a relatively small proportion of the hot melt adhesive strip the circumference of the roll with the hot melt adhesive strip in Touch comes. With the one above the hot melt adhesive strip moving mold, the role continues to rotate and that in contact with the hot melt adhesive strip when forming come surface section of the roll cools on the Ambient air. This remains during the forming of the Hot melt adhesive strip always on lower roll Temperature, causing the tendency of the hot melt adhesive at the Adhesion role is reduced. This will disrupt the Avoided production flow and the throughput of the device according to the invention increased.
Wenn, wie es in Ausgestaltung der Erfindung vorgesehen ist, die Nut im Bereich ihrer Mittellinie einen größeren Durchmesser aufweist als an ihren Rändern, ist gewährleistet, daß der Schmelzkleberstreifen an der Seite, auf die die Papierblätterkanten beim Einbinden zu stehen kommen, im Querschnitt eine muldenförmige Vertiefung hat. Dadurch werden die Papierblätter zur Mitte hin zusammengeführt und auch zusammengehalten. Außerdem ist der Schmelzkleberauftrag an den Längsseitenrändern, wo die Papierblätter besonders hohen Belastungen ausgesetzt sind, am dicksten, wodurch der Halt der Papierblätter verbessert wird. Schließlich eröffnet dies die Möglichkeit, mit geringen Schmelzkleberdicken zu arbeiten, also Schmelzkleber einsparen.If, as is provided in an embodiment of the invention, the Groove a larger diameter in the area of their center line has than than at its edges, it is ensured that the Hot melt adhesive strips on the side on which the Paper sheet edges come to rest when binding, in Cross-section has a trough-shaped depression. This will the sheets of paper brought together towards the middle and also held together. In addition, the hot melt adhesive application is to the Long edges where the paper sheets are particularly tall Exposed to the thickest, causing the hold of the Paper sheets is improved. Finally, this opens up the Possibility to work with small hot melt adhesive thicknesses, so Save hot melt adhesive.
Schließlich ist es von Vorteil, wenn die Rolle zu beiden Seiten der Nut je einem umlaufenden Prägering zum Einprägen von Falzen in die Einbandmappe aufweist. Bei einer derartigen Ausgestaltung der Rolle lassen sich die Arbeitsvorgänge des Umformens des Schmelzkleberstreifens und des Einprägens der Falze miteinander kombinieren, wodurch sich der Durchsatz der erfindungsgemäßen Vorrichtung noch weiter erhöht.Finally, it is advantageous if the role is on both sides the groove has a circumferential embossing ring for embossing folds has in the cover folder. With such a Organization of the role can be the work processes of Forming the hot-melt adhesive strip and embossing the Combine folds with each other, which increases the throughput of the device according to the invention increased even further.
In einer alternativen Ausgestaltung weist das Formwerkzeug zwei Rollen auf, die auch auf Achsen gelagert sind, die an Verlängerungen im wesentlichen zusammenfallen. Mit derartigen Rollen wird das Formwerkzeug besonders genau bezüglich einer Stützfläche des Formwerkzeugs geführt, wodurch sich eine gewünschte Formgebung des Schmelzkleberstreifens ergibt.In an alternative embodiment, the molding tool has two Rollers that are also supported on axles that Extensions essentially coincide. With such The molding tool will roll particularly precisely with respect to one Supported surface of the mold, resulting in a desired shape of the hot melt adhesive strip results.
Wenn in weiterer Ausgestaltung der Erfindung die Rollen an ihrem Umfang je einen umlaufenden Prägering zum Einprägen jeweils eines Falzes in den Einbandbogen aufweisen, ergibt sich so eine besonders gute Falzung des Einbanddeckels.If in a further embodiment of the invention, the roles a circumferential embossing ring for embossing each have a fold in the cover sheet results such a particularly good fold of the cover.
In Ausbildung der erfindungsgemäßen Vorrichtung ist im Formwerkzeug zwischen den Rollen wenigstens eine nach unten und an zwei Stirnseiten offene Aussparung zur Umformung des Schmelzkleberstreifens vorgesehen. Bei einer derartigen Ausbildung des Formwerkzeugs wird der Schmelzkleberstreifen mit einem feststehenden Formwerkzeugteil umgeformt. Im Gegensatz zu einem beweglichen Formwerkzeugteil zur Umformung des Schmelzkleberstreifens ist dies von Vorteil, weil bewegliche Formwerkzeugteile durch den intensiven Kontakt mit dem Schmelzkleber so verschmutzt werden können, daß sie in ihrer Beweglichkeit eingeschränkt werden. Bei der Ausbildung des Formwerkzeugs ohne bewegliche Bauteile kann dies nicht vorkommen, wodurch sich die Zuverlässigkeit der erfindungsgemäßen Vorrichtung erhöht.In training the device according to the invention is in Mold between the rollers at least one down and Open recess on two ends for reshaping the Hot melt adhesive strip provided. With such a Forming the molding tool with the hot melt adhesive strip formed a fixed mold part. In contrast to a movable mold part for reshaping the Hot melt adhesive strip is advantageous because it is movable Mold parts through intensive contact with the Hot melt adhesive can be so dirty that it is in their Mobility can be restricted. When training the This is not possible with a mold without moving parts occur, which increases the reliability of the device according to the invention increased.
Schließlich ist in den erfindungsgemäßen Vorrichtungen vorgesehen, daß Formwerkzeug und Zuführeinrichtung entlang des Förderwegs eines Förderbands angeordnet sind. Bei einer derartigen Anordnung von Formwerkzeug und Zuführeinrichtung kann die Fertigung der Einbandmappen vollautomatisch und mit sehr hoher Geschwindigkeit erfolgen. Dies ist insbesondere dann der Fall, wenn die Einbandmappen, die mit einem Schmelzkleberstreifen versehen werden soll, automatisch auf dieses Förderband aufgelegt werden. Dadurch erhöht sich der Durchsatz der erfindungsgemäßen Vorrichtungen.Finally, in the devices according to the invention provided that the mold and feed device along the Conveyor path of a conveyor belt are arranged. At a such arrangement of mold and feed device can complete the production of the binders automatically and with very high speed. This is especially so the case when the binders that come with a Hot melt adhesive strips should be provided automatically this conveyor belt will be put on. This increases the Throughput of the devices according to the invention.
In der Zeichnung ist die Erfindung anhand von Ausführungsbeispielen näher veranschaulicht. Es zeigen:
- Figur (1)
- eine perspektivische Ansicht einer Vorrichtung zum Herstellen von Einbandmappen,
- Figur (2)
- einen Querschnitt durch einen mit der Vorrichtung gemäß Figur 1 mit Schmelzkleber versehenen Einbandbogen mit einer über ihm stehenden Schmelzkleberdüse,
- Figur (3)
- einen Querschnitt durch den Einbandbogen gemäß Figur 1 mit einem über ihm stehenden Formwerkzeug,
- Figur (4)
- einen Querschitt durch den
Einbandbogen gemäß Figur 3 mit auf dem Schmelzkleberstreifen aufgepreßtem Formwerkzeug, - Figur (5)
- einen Querschnitt durch eine fertiggestellte Einbandmappe,
- Figur (6)
- eine perspektivische Ansicht einer weiteren Vorrichtung zum Herstellen von Einbandmappen,
- Figur (7)
- ein Formwerkzeug der Vorrichtung gemäß Figur 6 und
- Figur (8)
- ein weiteres Formwerkzeug der Vorrichtung gemäß Figur 6.
- Figure (1)
- 1 shows a perspective view of a device for producing cover binders,
- Figure (2)
- 2 shows a cross section through a cover sheet provided with the device according to FIG. 1 with hot-melt adhesive with a hot-melt adhesive nozzle above it,
- Figure (3)
- 2 shows a cross section through the cover sheet according to FIG. 1 with a molding tool standing above it,
- Figure (4)
- 3 shows a cross-section through the cover sheet according to FIG. 3 with the molding tool pressed onto the hot-melt adhesive strip,
- Figure (5)
- a cross section through a finished cover folder,
- Figure (6)
- 2 shows a perspective view of a further device for producing cover binders,
- Figure (7)
- a mold of the device according to Figure 6 and
- Figure (8)
- another molding tool of the device according to FIG. 6.
Die in Figur (1) perspektivisch dargestellte Vorrichtung (1) weist ein Förderband (2) mit zwei Förderriemen (3) auf, die über eine Antriebsrolle (4) und eine Umlenkrolle (5) gelegt sind. Die Antriebsrolle (4), die über einen Elektromotor (6) angetrieben wird, und die Umlenkrolle (5) sind so angeordnet, daß die sich zwischen ihnen erstreckenden geraden Abschnitte der Förderriemen (3) waagerecht verlaufen. Die oben liegenden geraden Abschnitte der Förderriemen (3) werden durch eine ebene Stützplatte (7) unterstützt. Bei eingeschaltetem Elektromotor (6) dreht sich die Antriebsrolle (4) in der gezeigten Ansicht im Uhrzeigersinn, was durch den eingezeichneten Umlaufrichtungspfeil (8) verdeutlicht wird.The device (1) shown in perspective in FIG. (1) has a conveyor belt (2) with two conveyor belts (3), the placed over a drive roller (4) and a deflection roller (5) are. The drive roller (4), which has an electric motor (6) is driven, and the deflection roller (5) are arranged that the straight sections extending between them the conveyor belt (3) is horizontal. The above straight sections of the conveyor belt (3) are through a flat Support plate (7) supported. With the electric motor switched on (6) the drive roller (4) rotates in the view shown clockwise what is shown by the Rotation direction arrow (8) is clarified.
In Laufrichtung des Förderbands (2) sind vom Anfang des Förderbands zu seinem Ende hin eine Zuführeinrichtung (9) zum Aufbringen eines Schmelzkleberstreifens (10) auf einen Einbandbogen (11) und eine Umformeinrichtung (12) zum Umformen des aufgebrachten Schmelzkleberstreifens (10) und zum Anbringen von Falzen auf dem Einbandbogen (11) vorgesehen. Schließlich kann eine fertiggestellte Einbandmappe (13), die einen Schmelzkleberstreifen (14) in der gewünschten Form und desweiteren Falze (15) aufweist, die die beiden Einbanddeckel (16) von dem Einbandrücken (17) trennen, vom Förderband (2) abgenommen werden.In the running direction of the conveyor belt (2) are from the beginning of Conveyor belt towards its end a feed device (9) for Applying a hot melt adhesive strip (10) to one Cover sheet (11) and a forming device (12) for forming of the applied hot-melt adhesive strip (10) and for attachment of folds provided on the cover sheet (11). Finally can a finished cover folder (13), the one Hot melt adhesive strips (14) in the desired shape and furthermore has folds (15) which cover the two covers (16) separate from the back cover (17), from the conveyor belt (2) be removed.
Die Zuführeinrichtung (9), mit der der Schmelzkleberstreifen (10) auf den Einbandbogen (11) aufgebracht wird, hat einen thermostatisch geregelten Heizbehälter (18), der verflüssigten Schmelzkleber enthält. Der verflüssigte Schmelzkleber wird von einer Pumpe (19) über eine Leitung (20) einer Kolbendosiervorrichtung (21) zugeführt, die von einer Heizvorrichtung (22) auf einer so hohen Temperatur gehalten wird, daß der thermoplastische Schmelzkleber im plastischen Zustand durch eine Schmelzkleberdüse (23) als raupenförmiger Schmelzkleberstreifen (10) austritt.The feed device (9) with which the hot-melt adhesive strip (10) is applied to the cover sheet (11) has one thermostatically controlled heating container (18), the liquefied Contains hot melt adhesive. The liquefied hot melt adhesive is from a pump (19) via a line (20) Piston metering device (21) supplied by a Heater (22) kept at such a high temperature is that the thermoplastic hot melt adhesive in the plastic Condition through a hot melt adhesive nozzle (23) as a caterpillar Hot melt adhesive strip (10) emerges.
Die Kolbendosiervorrichtung (21) und der Elektromotor (6) sind derart miteinander verbunden, daß zu Beginn des Fördervorgangs der Kolbendosiervorrichtung (21) das Förderband (2) anfährt und den Einbandbogen (11) mit konstanter Geschwindigkeit unter der Schmelzkleberdüse (23) weiterbefördert, so daß der Schmelzkleberstreifen (10) einen gleichmäßigen Querschnitt hat. Bei ordnungsgemäßer Einstellung von Kolbendosiervorrichtung (21) und Förderband (2) beginnt der Schmelzkleberstreifen (10) an einer Seitenkante des Einbandbogens (11) und endet an der gegenüberliegenden Kante.The piston metering device (21) and the electric motor (6) are connected in such a way that at the beginning of the funding process the piston metering device (21) starts the conveyor belt (2) and the cover sheet (11) at a constant speed under the Hot melt adhesive nozzle (23) conveyed so that the Hot melt adhesive strip (10) has a uniform cross section. If the piston metering device is set correctly (21) and conveyor belt (2) begins the hot-melt adhesive strip (10) on one side edge of the cover sheet (11) and ends at the opposite edge.
Nach dem Aufbringen des Schmelzkleberstreifens (10) wird der Einbandbogen (11) durch das Förderband (2) unter die Umformeinrichtung (12) transportiert. Die Umformeinrichtung (12) weist einen Pressenträger (24) auf, der sich über dem Förderband (2) quer dazu erstreckt. An einem auskragenden Schenkel des Pressenträgers (24) ist an der Unterseite eine hydraulische Kolbenpresse (25) angeordnet, an deren Kolben (26) ein Formwerkzeug (27) angebracht ist, dessen Länge gleich der Breite des Einbandbogens (11) ist. Das Formwerkzeug (27) wird durch die Kolbenpresse (25) auf den Einbandbogen (11) gepreßt und formt den Einbandbogen (11) mit dem darauf aufgebrachten Schmelzkleberstreifen (10) in die Einbandmappe (13) um. Diese wird nach dem Anheben des Formwerkzeugs (27) durch eine Bewegung des Förderbands (2) weitergefördert und kann dann vom Förderband (2) abgenommen werden.After applying the hot-melt adhesive strip (10) Cover sheet (11) through the conveyor belt (2) under the Forming device (12) transported. The forming device (12) has a press carrier (24) which is above the Conveyor belt (2) extends transversely to it. On a cantilever Leg of the press carrier (24) is one at the bottom hydraulic piston press (25) arranged on the piston (26) a molding tool (27) is attached, the length of which is equal to Width of the cover sheet (11) is. The molding tool (27) is pressed by the piston press (25) onto the cover sheet (11) and forms the cover sheet (11) with that attached to it Hot melt adhesive strips (10) into the cover folder (13). This is after lifting the mold (27) by a Movement of the conveyor belt (2) further promoted and can then Conveyor belt (2) can be removed.
Figur (2) zeigt einen Querschnitt durch den an der Zuführeinrichtung (9) stehenden Einbandbogen (11) und durch die Stützplatte (7) mit Blick auf die Zuführeinrichtung (9), von der in der gezeigten Figur nur die Schmelzkleberdüse (23) zu sehen ist. Zur besseren Veranschaulichung sind in dieser Ansicht die Förderriemen (3), auf denen der Einbandbogen (11) gefördert wird, weggelassen. Auf dem Einbandbogen (11) ist der raupenförmige Schmelzkleberstreifen (10) aufgebracht.Figure (2) shows a cross section through the Feeder (9) standing cover sheet (11) and through the Support plate (7) with a view of the feed device (9), from only the hot melt adhesive nozzle (23) in the figure shown see is. For a better illustration are in this View the conveyor belts (3) on which the cover sheet (11) is promoted, omitted. On the cover sheet (11) is the caterpillar-shaped hot-melt adhesive strips (10) applied.
In Figur (3) ist der Einbandbogen (11) mit dem aufgebrachten Schmelzkleberstreifen (10) unter der Umformeinrichtung (12) dargestellt, von der nur das Formwerkzeug (27) gezeigt wird. Zur besseren Veranschaulichung ist vom Förderband (2) nur die Stützplatte (7) gezeigt, während die Förderriemen (3) weggelassen sind. Wie man in dieser Ansicht deutlich sieht, wird das Formwerkzeug (27) von einer Stempeldecke (28) und zwei Seitenwänden (29) begrenzt, an deren Unterkante zwei Biegekanten (30) angeformt sind. Der Einbandbogen (11) ist unter dem Formwerkzeug (27) positioniert. Dabei liegt der Schmelzkleberstreifen (10) mittig zwischen den Seitenwänden (29) und zwischen den in der Stützplatte (7) eingelassenen, den Biegekanten (30) gegenüberstehenden Nuten (31).In Figure (3) is the cover sheet (11) with the applied Hot melt adhesive strips (10) under the forming device (12) shown, of which only the mold (27) is shown. For better illustration, only the conveyor belt (2) Support plate (7) shown while the conveyor belt (3) are omitted. As you can clearly see in this view, the mold (27) from a stamp cover (28) and two Side walls (29) limited, on the lower edge of two Bending edges (30) are formed. The cover sheet (11) is positioned under the mold (27). Here lies the Hot melt adhesive strips (10) in the middle between the side walls (29) and between the embedded in the support plate (7), the Bending edges (30) opposing grooves (31).
Figur (4) zeigt die durch Umformen des Einbandbogens (11) und des Schmelzkleberstreifens (10) entstandene Einbandmappe (13) mit dem Schmelzkleberstreifen (14) trapezförmigen Querschnitts. Das Formwerkzeug (27) ruht dabei noch auf dem Schmelzkleberstreifen (14). Wie man deutlich sieht, füllt der Schmelzkleberstreifen den gesamten von der Stempeldecke (28), den Seitenwänden (29) und den von dem Einbandrücken (17) gebildeten Hohlraum aus. Die Biegekanten (30) drücken den Einbandbogen (11) in die Nuten (31) und bilden dabei die Falze (15) aus.Figure (4) shows that by reshaping the cover sheet (11) and the cover (13) of the hot-melt adhesive strip (10) with the hot-melt adhesive strip (14) trapezoidal cross-section. The mold (27) still rests on the Hot melt adhesive strips (14). As you can clearly see, it fills Hot melt adhesive strips the entire of the stamp cover (28), the side walls (29) and the back cover (17) formed cavity. The bending edges (30) press the Cover sheet (11) in the grooves (31) and form the folds (15).
Figur (5) schließlich zeigt die fertiggestellte Einbandmappe (13), die im wesentlichen aus den Schmelzkleberstreifen (14) mit trapezförmigem Querschnitt auf dem Einbandrücken (17) und den beiden Einbanddeckeln (16) besteht, die durch Falze (15) vom Einbandrücken (17) getrennt sind.Figure (5) finally shows the finished binder (13), which essentially consist of the hot-melt adhesive strips (14) with a trapezoidal cross-section on the cover spine (17) and the two cover covers (16), which by folds (15) are separated from the back cover (17).
Figur (6) zeigt eine weitere Vorrichtung (32) zur Herstellung einer Einbandmappe nach dem erfindungsgemäßen Verfahren. Die Vorrichtung (32) weist ein Förderband (33) mit Förderriemen (34) auf, die über eine Antriebsrolle (35) angetrieben werden und über eine Umlenkrolle (36) geführt sind. Die Antriebsrolle (35) ist an einem Elektromotor (37) angeflanscht. Desweiteren weist das Förderband (33) eine Stützplatte (38) auf, die die oberen Abschnitte der zwischen Antriebsrolle (35) und Umlenkrolle (36) verlaufenden Förderriemen (34) unterstützt.Figure (6) shows a further device (32) for production a cover folder according to the inventive method. The Device (32) has a conveyor belt (33) with conveyor belts (34), which are driven by a drive roller (35) and are guided over a deflection roller (36). The driving role (35) is flanged to an electric motor (37). Furthermore the conveyor belt (33) has a support plate (38) which the upper sections between the drive roller (35) and Deflection roller (36) extending conveyor belt (34) supported.
Entlang des Transportwegs des Förderbands (33) sind eine Zuführeinrichtung (39), bei der ein Einbandbogen (40) mit einem raupenförmigen Schmelzkleberstreifen (41) versehen wird, und eine Umformeinrichtung (42) angeordnet, die auf dem Einbandbogen (40) Falze (43) anbringt und den Schmelzkleberstreifen (41) in einen Schmelzkleberstreifen (44) mit trapezförmigem Querschnitt umformt.Along the transport path of the conveyor belt (33) are one Feed device (39), in which a cover sheet (40) with a caterpillar-shaped hot-melt adhesive strip (41) is provided, and a forming device (42) arranged on the Binding (40) folds (43) attaches and Hot melt adhesive strip (41) into a hot melt adhesive strip (44) formed with a trapezoidal cross-section.
Die Zuführeinrichtung (39) hat einen Heizbehälter (45), der flüssigen thermoplastischen Schmelzkleber enthält, und eine Pumpe (46), die den flüssigen Schmelzkleber über eine Leitung (47) einer Dosiereinrichtung (48) zuführt. Direkt an die Dosiereinrichtung (48) schließt sich eine Schmelzkleberdüse (49) an, die von einem elektrischen Heizelement (50) auf einer so hohen Temperatur gehalten wird, daß der durch die Schmelzkleberdüse (49) austretende Schmelzkleber zumindest plastisch verformbar ist. Die Zuführeinrichtung (39) ist in eine Vorschubeinrichtung (51) integriert, die im wesentlichen aus einem hydraulischen Kolbentrieb (52) und einer auf zwei Linearführungen (53) gelagerten Halterung (54) besteht. Die Halterung (54) ist mit einem Kolben (55) des Kolbentriebs (52) verbunden. Desweiteren steht der Kolbentrieb (52) derart mit der Zuführeinrichtung (39) in Verbindung, daß aus der Schmelzkleberdüse (49) genau dann Schmelzkleber austritt, wenn die Vorschubeinrichtung (51) den Vorschub der Halterung (54) in Gang setzt. Schließlich ist in die Vorschubeinrichtung (51) noch die Umformeinrichtung (52) integriert. Die Umformeinrichtung (52) ist dabei in Längsrichtung des Förderbands (33) gesehen genau so weit von der Zuführeinrichtung (39) entfernt, daß deren Abstand dem Abstand zweier Schmelzkleberstreifen (41) auf benachbarten Einbandmappenbögen (40) entspricht. Auf diese Weise ist gewährleistet, daß bei einer Vorschubbewegung der Vorschubeinrichtung (51) auf einem Einbandbogen (40) der Schmelzkleberstreifen (41) aufgetragen wird, während gleichzeitig auf dem in Förderrichtung des Förderbands (33) nächstgelegenen Einbandbogen der Schmelzkleberstreifen (44) und die Falze (43) ausgeformt werden.The feed device (39) has a heating container (45) which contains liquid thermoplastic hot melt adhesive, and a Pump (46), which the liquid hot melt adhesive via a line (47) feeds a metering device (48). Directly to the Dosing device (48) closes a hot melt adhesive nozzle (49) on by an electric heating element (50) on a is kept so high that the by the Hot melt adhesive nozzle (49) at least emerging hot melt adhesive is plastically deformable. The feed device (39) is in a feed device (51) integrated, which essentially consisting of a hydraulic piston drive (52) and one on two Linear guides (53) mounted bracket (54). The Bracket (54) with a piston (55) of the piston drive (52) connected. Furthermore, the piston drive (52) also stands with the feed device (39) in connection that from the Hot melt adhesive nozzle (49) emerges from hot melt adhesive exactly when the feed device (51) feeds the holder (54) in Gear sets. Finally, in the feed device (51) still the forming device (52) integrated. The Forming device (52) is in the longitudinal direction of the Conveyor belt (33) seen as far from that Feeder (39) removes the distance between the distances two hot melt adhesive strips (41) on adjacent ones Binding folder sheets (40) corresponds. That way ensures that with a feed movement the Feed device (51) on a cover sheet (40) Hot melt adhesive strip (41) is applied while simultaneously on the in the conveying direction of the conveyor belt (33) closest cover sheet of hot melt adhesive strips (44) and the folds (43) are formed.
Figur (7) zeigt ein Formwerkzeug (56) als Einzelheit der Umformeinrichtung (42). Das Formwerkzeug (56) weist an seiner Unterseite eine drehbar gelagerte Rolle (57) auf. Die Rolle (57) ist in ihrer Mitte mit einer umlaufenden Nut (58) versehen, während zu beiden Seiten der Nut umlaufende Prägeringe (59) auf der Rolle angebracht sind. In der Stützplatte (38) sind zwei Nuten (60) so angebracht, daß die Prägeringe (59) bei Bewegung der Vorschubeinrichtung (51) in diesen Nuten (60) laufen. Der zwischen Formwerkzeug (56) und Stützplatte (38) eingelegte Einbandbogen (40) wird somit mit zwei Falzen (43) versehen. Gleichzeitig wird der Schmelzkleberstreifen (41) durch die Nut (58) beim Drehen der Rolle (57) in einen Schmelzkleberstreifen (44) mit trapezförmigem Querschnitt umgeformt. Figure (7) shows a molding tool (56) as a detail of Forming device (42). The molding tool (56) has on it Bottom of a rotatably mounted roller (57). The role (57) is in the middle with a circumferential groove (58) provided while encircling on both sides of the groove Embossing rings (59) are attached to the roll. In the Support plate (38) have two grooves (60) so that the Embossing rings (59) when the feed device (51) moves in run these grooves (60). The between mold (56) and Support plate (38) inserted cover sheet (40) is thus with provided two folds (43). At the same time the Hot melt adhesive strips (41) through the groove (58) when turning the Roll (57) in a hot melt adhesive strip (44) with reshaped trapezoidal cross-section.
Figur (8) zeigt ein weiteres Formwerkzeug (61), das an seiner Unterseite zwei drehbar gelagerte Rollen (62) aufweist. Die Rollen (62) sind an ihrem Umfang jeweils mit einem Prägering (63) versehen. Die Prägeringe (63) rollen beim Vorschub des Formwerkzeugs (61) durch die Vorschubeinrichtung (51) in den Nuten (60) der Stützplatte (38). Bei einem zwischen Formwerkzeug (61) und Stützplatte (38) eingelegten Einbandbogen (40) werden auf diese Weise Falze (43) eingeprägt. Zwischen den Rollen (62) ist im Formwerkzeug (61) eine trapezförmige Aussparung (64) zur Umformung des Schmelzkleberstreifens (41) vorgesehen.Figure (8) shows a further mold (61), which on its Has two rotatably mounted rollers (62) on the underside. The Rolls (62) are each with an embossing ring on their circumference (63). The embossing rings (63) roll when the Forming tool (61) through the feed device (51) in the Grooves (60) of the support plate (38). With a between Molding tool (61) and support plate (38) inserted cover sheet (40) folds (43) are embossed in this way. Between Rolling (62) is a trapezoidal in the mold (61) Recess (64) for reshaping the hot-melt adhesive strip (41) intended.
Claims (23)
- Method for making a book cover (13) out of at least one cover sheet (11, 40) comprising at least one binding case (16) adjoining a backbone, involving the application of hot melt adhesive to the inner face of the cover sheet (11, 40) at the location intended for the backbone (17) so as to first form on the cover sheet (11, 40) a ribbon of hot melt adhesive (10, 41) which has been brought to an at least plastic state by previously heating it,
characterised in that the hot melt adhesive is remodelled following its application to at least part of the cover sheet (11, 40). - Method according to claim 1,
characterised in that the hot melt adhesive (10, 41) is remodelled with the help of a forming tool (27, 56, 61). - Method according to claim 2,
characterised in that the forming tool (27, 56, 61) is moved in the longitudinal and/or transverse direction of the ribbon of hot melt adhesive (10, 41) during or after remodelling thereof. - Method according to any one of the preceding claims,
characterised in that before it is applied to the cover sheet the hot melt adhesive is heated to a temperature above its setting temperature and below the temperature at which it becomes completely liquid. - Method according to any one of the preceding claims,
characterised in that prior to remodelling thereof the ribbon of hot melt adhesive applied to the cover sheet is cooled on its exposed surface until a layer of solidified hot melt adhesive has formed there. - Apparatus for carrying out the method according to any one of claims 1 to 5, comprising at least one heating device (22) for liquefying the hot melt adhesive and a delivery mechanism (9, 30) for applying the hot melt adhesive directly on the cover sheet (11, 40) to first form a ribbon of hot melt adhesive (10, 41) on the cover sheet (11, 40),
characterised by a remodelling device (12, 42) for remodelling the applied hot melt adhesive after the application thereof on the cover sheet (11, 40). - Apparatus according to claim 6,
characterised in that the remodelling device incorporates a forming tool (27) and a pressing device (25) for pressing on the forming tool (27). - Apparatus according to claim 7,
characterised by a forming tool (27) which is delimited by a die ceiling (28) and at least two side walls (29) and is open along one lower longitudinal face and two end faces. - Apparatus according to claim 8,
characterised in that the forming tool incorporates end walls on the end faces. - Apparatus according to claim 8 or 9,
characterised in that the side walls (29) are constructed as bending edges (30) for impressing folds (15) in the cover sheets (11) as the ribbon of hot melt adhesive (10) is being remodelled. - Apparatus according to any one of claims 8 to 10,
characterised in that opposite the open longitudinal face of the forming tool (27) the pressing device (25) incorporates a supporting surface (7) with grooves (31) situated opposite the lower edges of the side walls (29). - Apparatus according to any one of claims 8 to 11,
characterised in that opposite the open longitudinal face of the forming tool the pressing device incorporates a flexible supporting surface. - Apparatus according to any one of claims 8 to 12,
characterised in that the forming tool has a smaller clearance in the region of its median longitudinal axis than at the edges. - Apparatus according to claim 6,
characterised in that the remodelling device incorporates a forming tool (56, 61) equipped with at least one rotatably mounted roller (57, 62) and a feed device (51) for the forming tool (56, 61). - Apparatus according to claim 14,
characterised in that the forming tool (56) incorporates a roller (57). - Apparatus according to claim 15,
characterised in that the roller incorporates a groove (58) running all round it for remodelling the ribbon of hot melt adhesive (41). - Apparatus according to claim 16,
characterised in that the groove has a greater diameter in the region of its median line than at the edges. - Apparatus according to any one of claims 15 to 17,
characterised in that to both sides of the groove (58) the roller (57) incorporates a respective impressing ring (59) running all round it for impressing folds (43) in the cover sheets (40). - Apparatus according to claim 14,
characterised in that the forming tool (61) incorporates at least two rollers (62). - Apparatus according to claim 19,
characterised in that the rollers (62) are mounted on shafts the extensions of which substantially coincide. - Apparatus according to either of claims 19 or 20,
characterised in that running all round their circumference the rollers (62) incorporate a respective impressing ring (63) for impressing a respective fold (43) in the cover sheets (49). - Apparatus according to any one of claims 19 to 21,
characterised in that for remodelling the ribbon of hot melt adhesive (41) there is provided in the forming tool (61), between the rollers (62), at least one recessed area (64) which is open towards the bottom and on two end faces. - Apparatus according to any one of claims 7 to 22,
characterised in that the forming tool (27, 56, 61) and the delivery mechanism (9, 39) are disposed along the path travelled by a conveyor belt (2, 33).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4403887A DE4403887C2 (en) | 1994-02-08 | 1994-02-08 | Method and device for applying hot melt adhesive to a cover sheet |
DE4403887 | 1994-02-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0666185A1 EP0666185A1 (en) | 1995-08-09 |
EP0666185B1 true EP0666185B1 (en) | 1998-04-08 |
Family
ID=6509753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95100338A Expired - Lifetime EP0666185B1 (en) | 1994-02-08 | 1995-01-12 | Method and device for fabricating a book cover |
Country Status (4)
Country | Link |
---|---|
US (1) | US5788436A (en) |
EP (1) | EP0666185B1 (en) |
CA (1) | CA2141996A1 (en) |
DE (2) | DE4403887C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017157296A1 (en) * | 2016-03-15 | 2017-09-21 | 广州市永合祥自动化设备科技有限公司 | Dual flow direction middle cover glue dispensing mechanism |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4403887C2 (en) * | 1994-02-08 | 1996-10-02 | Peter Lazar | Method and device for applying hot melt adhesive to a cover sheet |
DE20301019U1 (en) * | 2003-01-22 | 2003-03-27 | Swedex GmbH & Co. KG, 41468 Neuss | Cover for binding a stack of sheets |
BE1017215A3 (en) * | 2006-07-11 | 2008-05-06 | Unibind Ltd | Production method for thermal binding element, involves pressing hot=melt adhesive applied to binding element to uniform thickness |
CN103213419B (en) * | 2013-04-17 | 2014-09-10 | 浙江欣炜机械有限公司 | Horizontal transposition device of surface covering machine |
CN103448405B (en) * | 2013-08-29 | 2016-03-30 | 温州科强机械有限公司 | A kind of full-automatic cover production line |
CN103818145A (en) * | 2013-12-13 | 2014-05-28 | 广东易美图影像科技股份有限公司 | Manufacture method of enveloped photo album |
CN103753998B (en) * | 2013-12-21 | 2016-06-08 | 广州向盟机械有限公司 | A kind of cementing machine |
CN110666036B (en) * | 2019-09-30 | 2020-11-17 | 英联金属科技(汕头)有限公司 | Full-automatic easy-open end stamping and curling glue injection production line |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4403887C2 (en) * | 1994-02-08 | 1996-10-02 | Peter Lazar | Method and device for applying hot melt adhesive to a cover sheet |
Family Cites Families (14)
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US3707418A (en) * | 1970-10-16 | 1972-12-26 | Xerox Corp | Method of binding |
BE790283A (en) * | 1971-11-01 | 1973-04-19 | Xerox Corp | ADHESIVE BINDING DEVICES |
CA1046551A (en) * | 1974-07-01 | 1979-01-16 | General Binding Corporation | Heat activatable binding cover with pressure sensitive adhesive |
CA1069775A (en) * | 1975-03-17 | 1980-01-15 | Henry N. Staats | Apparatus and method for manufacturing adhesive covers |
US4141100A (en) * | 1976-09-27 | 1979-02-27 | Domroe William E | Binding machine and cover for use therewith |
SE413647B (en) * | 1979-03-30 | 1980-06-16 | Semotex Ab | PROCEDURE AND DEVICE FOR PREPARING A PERM, A COPY OR SIMILAR |
DE3010642C3 (en) * | 1979-03-30 | 1995-11-09 | Bind O Matic Ab | Process for producing a cover, booklet or the like, and use of an apparatus therefor |
DE2937171A1 (en) * | 1979-09-14 | 1981-04-02 | Finn Business Machines Inc. Konttorikoneteollisuus Oy, Helsinki | Computer sheet binders prodn. method - consists of front and back section with spine covered by thermoplastic layer (FI 30.11.79) |
DE3047230C2 (en) * | 1980-12-16 | 1984-01-05 | Axel Dr. Dipl.-Kfm. 6072 Dreieich Brinkmann to Broxten | Method for reinforcing the back area of a document container formed from a single blank |
DE3435704C1 (en) * | 1984-09-28 | 1986-03-13 | Lázár, Peter, 4040 Neuss | Method and device for producing a cover or the like and cover |
US4606689A (en) * | 1985-07-05 | 1986-08-19 | Bind-O-Matic Ab | Method and apparatus for producing book covers, folders, booklets and the like |
DE3538897A1 (en) * | 1985-11-02 | 1987-05-07 | Henkel Kgaa | ADHESIVE ORDER PROCESS |
DE3829977A1 (en) * | 1988-09-03 | 1990-03-15 | Peter Lazar | METHOD AND DEVICE FOR PRODUCING BINDINGS OR THE LIKE |
US5028193A (en) * | 1989-04-26 | 1991-07-02 | Misicka James A | Saddle-bound books, magazines and the like and process for manufacture same |
-
1994
- 1994-02-08 DE DE4403887A patent/DE4403887C2/en not_active Expired - Fee Related
-
1995
- 1995-01-12 EP EP95100338A patent/EP0666185B1/en not_active Expired - Lifetime
- 1995-01-12 DE DE59501797T patent/DE59501797D1/en not_active Expired - Fee Related
- 1995-02-07 CA CA002141996A patent/CA2141996A1/en not_active Abandoned
- 1995-02-07 US US08/385,132 patent/US5788436A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4403887C2 (en) * | 1994-02-08 | 1996-10-02 | Peter Lazar | Method and device for applying hot melt adhesive to a cover sheet |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017157296A1 (en) * | 2016-03-15 | 2017-09-21 | 广州市永合祥自动化设备科技有限公司 | Dual flow direction middle cover glue dispensing mechanism |
Also Published As
Publication number | Publication date |
---|---|
DE4403887A1 (en) | 1995-08-10 |
CA2141996A1 (en) | 1995-08-09 |
EP0666185A1 (en) | 1995-08-09 |
US5788436A (en) | 1998-08-04 |
DE59501797D1 (en) | 1998-05-14 |
DE4403887C2 (en) | 1996-10-02 |
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