EP4309912A1 - Lamination device for producing laminate product having tab, and method for producing laminate product - Google Patents
Lamination device for producing laminate product having tab, and method for producing laminate product Download PDFInfo
- Publication number
- EP4309912A1 EP4309912A1 EP23185342.5A EP23185342A EP4309912A1 EP 4309912 A1 EP4309912 A1 EP 4309912A1 EP 23185342 A EP23185342 A EP 23185342A EP 4309912 A1 EP4309912 A1 EP 4309912A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamination
- recess
- tab
- sheet
- lamination sheet
- 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.)
- Pending
Links
- 238000003475 lamination Methods 0.000 title claims abstract description 188
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000010030 laminating Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 description 23
- 239000000463 material Substances 0.000 description 16
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 7
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 7
- 230000001404 mediated effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/455—Associating two or more layers using heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/24—Passports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/46—Associating two or more layers using pressure
Definitions
- the invention relates to a lamination device for producing a laminate product with a tab.
- the invention further relates to a method for producing a laminate product with a tab using the lamination device according to the invention.
- the laminate product can be a data sheet that must be bound into a passport using a flap by sewing or something similar.
- the tab is arranged, for example, between the layers to be connected and protrudes laterally so that the data sheet can later be connected to the passport cover in an articulated manner via the tab. Due to its function as a joint in relation to the passport cover, the tab should be as stable as possible so that the data sheet does not become loose or detached over time.
- the lamination sheets used for production have elevations or additional material in the area of the tab in order to bridge the height difference between the relatively thin tab and the usually thicker data sheet and thereby reduce the temperature. This is particularly important if the tab is made of a material that contracts due to the increased temperature. However, with some tab materials, especially thermoplastic polyurethane, this means that the tab does not always have consistent quality because it is defective due to shrinkage after lamination.
- DE 10 2008 031 654 A1 shows a method for producing a data sheet in which information can be stored.
- a tab is incorporated into the data sheet, which is made of a plastic material and is suitable for binding into a passport book and enables the document card to be easily turned over in the passport book.
- the tab preferably consists of a thermoplastic elastomer, preferably a thermoplastic polyurethane (TPU).
- TPU thermoplastic polyurethane
- EP 2 945 807 B1 shows a method for producing a data sheet, wherein the data sheet consists of two layers of an organic polymer material and a textile 5 is laminated between the two layers, with part of the textile protruding as a tab outside the two layers.
- two lamination sheets are used, which have steps or elevations facing each other in the area of the tab in order to equalize the height in the area of the tab.
- DE 10 2004 041 434 A1 shows a lamination or embossing plate for a hot-cold laminating press with a three-dimensional structure, the embossing plate having both elevations and depressions for embossing the laminate product on a top side facing the laminate product to be produced, which forms a reference plane.
- the intended elevations or depressions produce structures that are recessed or raised relative to the reference plane on the laminate product to be produced, for example a security document such as an identity card, passport, identification card, credit card, customer card, driver's license and the like.
- the depressions provided in the lamination sheet are lenticular, rectangular, parabolic, elliptical, trapezoidal, V-shaped or irregularly shaped.
- the three-dimensional structures formed on the laminate product during lamination are intended to influence the beam path when visually and/or mechanically viewing information arranged underneath in such a way that a change in this formation is achieved visually and/or mechanically.
- DE 10 2008 058 912 A1 shows a process for producing laminate products and a laminate sheet for use in the process.
- the manufacturing method includes gathering layers and laminating the layers into a layered body having a first region from which a layered document can be produced and a second region. When the layers are laminated, elevations are created in the second area which lie outside the first area.
- the lamination sheet used in this case has corresponding depressions to produce the elevations in the second area, the depressions being able to be point-shaped or linear and surrounding the first areas on all sides.
- JP 2019 - 195 964 A shows a lamination device for producing a laminate product with a tab, comprising a first lamination plate with a first flat pressure surface facing the top of the laminate product to be produced and a second lamination plate with a second flat pressure surface facing the underside of the laminate product to be produced.
- the first lamination sheet has a step next to the first flat pressure surface, so that the first lamination sheet has a smaller wall thickness in an edge region.
- the second lamination sheet also has a step next to the second flat pressure surface, so that the second lamination sheet has a smaller wall thickness in an edge region.
- the resin films present to form the tab are arranged in the edge area of the first lamination sheet, so that the increased thickness of the laminate product due to the additional resin films is compensated for in this area and in particular a flat design of the data page adjacent to the tab is possible.
- the disadvantage, in particular for forming the data page, is that thermoplastic resin films present during production are severely deformed or even sheared off in the area of the step between the flat pressure surfaces and the edge region with reduced wall thickness.
- DE 10 2017 205 068 A1 shows a laminating device with a first laminating sheet and a second laminating sheet for producing a laminate product.
- the first lamination sheet has a first flat pressure surface and a groove-shaped recess running parallel to a longitudinal extent of the first lamination sheet, which extends from a first edge of the first lamination sheet toward a center of the first lamination sheet.
- a thermocouple is inserted into the groove-shaped recess and is intended to monitor the temperature of an upper side of the laminate product during lamination.
- EP 3 354 479 B1 shows a lamination device for producing a laminate product with a data sheet and a tab, the tab having a smaller thickness than the data sheet.
- the lamination device comprises a first lamination sheet with a flat pressure surface, a step being provided in the lamination sheet which compensates for the height difference between the data sheet and the tab. Furthermore, further depressions are provided in the lamination sheet in the area of the flat pressure surface, which are intended to form tactile features on the surface of the laminate product.
- the disadvantage is that the first lamination sheet touches the tab during production, so that the temperatures that occur can lead to corresponding losses in quality for tabs made of, in particular, thermoplastic polyurethane.
- DE 10 2004 055 973 A1 shows a lamination device for producing a laminate product, comprising a first lamination sheet with a length extending along a longitudinal extent of the first lamination sheet Elevation, which is arranged in the folding area of an insert sheet during lamination, with flat pressure surfaces assigned to the top of the laminate product being provided on the lamination sheet adjacent to the elevation of the top side of the laminate product.
- DE 10 2015 014 251 A1 shows a laminating device for producing a laminate product, comprising a first laminating sheet and a second laminating sheet, wherein the first laminating sheet has a first stage and the second laminating sheet has a second stage, so that the first laminating sheet has a first flat pressure surface for laminating a thicker main part of the laminate product and has an adjacent area with a greater wall thickness for laminating a thin tab.
- the tab to be produced is also disadvantageously touched by the contact with the steps, so that corresponding losses in quality can occur if the temperatures are too high for certain materials of the tab, in particular thermoplastic polyurethane.
- WO 02/ 092 326 A1 shows a lamination device for producing a laminate product, comprising a first lamination sheet and a second lamination sheet, wherein the first lamination sheet on its underside and the second lamination sheet on its top each have a flat pressure surface and a plurality of elevations for imprinting corresponding depressions in the laminate product.
- US 2015 / 0 027 326 A1 shows a lamination device for producing a laminate product, the lamination device comprising a first lamination sheet and a second lamination sheet, each of which has flat pressure surfaces, with a recess in the center of the flat pressure surfaces having a depression in the form of various motifs such as a tree leaf or a bird, so that in the laminate product corresponding increases can be imposed.
- a lamination device for producing a laminate product with a tab, in particular forming a joint.
- the lamination device comprises a first lamination sheet extending along a longitudinal axis with a first flat pressure surface assigned to the top side of the laminate product, a first recess being present in the first lamination sheet in addition to the first flat pressure surface.
- the lamination device further comprises a second lamination sheet with a second flat pressure surface assigned to the underside of the laminate product, with a second recess being present in the second lamination sheet in addition to the second pressure surface.
- the lamination device is characterized in that the first recess and the second recess are designed as grooves, the first recess being arranged near an edge region of the first lamination sheet and the second recess being arranged near an edge region of the second lamination sheet.
- the first depression designed as grooves and the second depression can advantageously be produced with well-defined dimensions, so that it can be ensured that the tab has a well-defined distance from the lamination sheet or the depressions.
- the first recess and the second recess are arranged mirror-symmetrically to a central plane defined between the first lamination sheet and the second lamination sheet.
- the tab can advantageously be arranged over its entire length in a well-defined position between the first recess and the second recess, so that each point on the top of the tab and the point opposite it on the underside of the tab each have well-defined distances from the lamination sheet.
- the first depression and the second depression each run parallel to the longitudinal axis. This advantageously makes it possible to arrange the tab present on the laminate product parallel to the longitudinal axis, so that the tab can be arranged over its entire length between the first recess and the second recess during lamination.
- the first depression and second depression have different depths.
- asymmetrical structures of the laminate product or the tab itself can be flexibly taken into account.
- the tab could can also be constructed in multiple layers, whereby different temperature profiles in relation to an upper side of the tab and an underside of the tab can be advantageous or even necessary, which can be realized by adjusting the respective depths of the first recess or the second recess.
- the first depression and the second depression have the same depths.
- the first depression has a first depth between 40 and 90 ⁇ m and the second depression has a second depth between 40 and 90 ⁇ m.
- the first depression and the second depression each have a flat bottom area.
- the floor area expediently defines a plane offset parallel to the central plane. This advantageously achieves a distance between the tab and the first recess or the second recess that is as constant as possible over the entire length of the tab.
- the first depression and the second depression expediently define a cavity which extends longitudinally parallel to the longitudinal axis.
- the cavity is advantageously provided so that the tab of the laminate product is at least largely positioned in the cavity during lamination, so that the tab is further spaced from the lamination sheets and a more favorable temperature distribution is also achieved.
- the tab is not heated as quickly or as strongly while the rest of the laminate product is laminated at the usual temperatures and pressures.
- the cavity or the depressions have a width which runs perpendicular to the longitudinal axis and which has at least the width of the tab to be arranged in the cavity. This advantageously ensures that the tab can optionally be arranged completely with its entire width between the first recess and the second recess.
- the first pressure surface adjoins the first recess and the second pressure surface adjoins the second recess.
- the corresponding depressions can be produced both mechanically and chemically.
- At least the first lamination sheet has a first recess between the first pressure surface and the first recess, which spaced the first pressure surface and the first recess from one another in a direction transverse, in particular perpendicular to the longitudinal axis.
- the first recess is designed as a slot.
- the second lamination sheet has a second recess between the second pressure surface and the second recess, which spaced the second pressure surface and the second recess from one another in a direction transverse, in particular perpendicular to the longitudinal axis.
- the area of the recess particularly heat-sensitive components, which are arranged on the tab or at least in an area of the laminate product adjacent to the tab, can be even better protected from the heat occurring during lamination, which is used to lamination or connection of the in the laminate product connecting layers is necessary to be protected.
- a method for producing a multilayer laminate product comprising, in a first method step, providing a lamination device, the lamination device being designed as described above.
- a second method step the positioning of a stack of at least two layers to be connected to one another and a laterally projecting tab arranged between the layers is provided between the first lamination sheet and the second lamination sheet, the first pressure surface of the first laminating sheet is arranged above the top of the top layer of the laminate product to be produced and the second pressure surface of the second laminating sheet is arranged below the underside of the bottom layer of the laminate product to be produced.
- the method includes laminating the layers to be connected under pressure and elevated temperature.
- the method according to the invention is characterized in that, after positioning, the tab is at least partially arranged between the first recess in the first lamination sheet and the second recess in the second lamination sheet.
- the tab is not exposed to excessively high temperatures during the subsequent lamination process step, so that the tab's expansion is only slightly influenced and thus has a consistently high quality.
- the tab is aligned parallel to the longitudinal axis of the first lamination sheet or the longitudinal extensions of the first recess and the second recess when positioning the stack of layers. This advantageously ensures that the tab is arranged over its entire length and for a well-defined width between the first recess and the second recess during the subsequent lamination.
- Fig 1 shows a first exemplary embodiment of a laminating device 1 with a laminate product 2 arranged therein with a tab 3 arranged laterally on the laminate product 2.
- the laminate product 2 is designed in the present case as a multi-layer data page for a passport.
- the tab 3 is designed as a tab strip made of thermoplastic polyurethane.
- the lamination device 1 comprises a first lamination sheet 4 which extends longitudinally in the direction of a longitudinal axis L and has a first pressure surface facing the top side 2a of the laminate product 2, which is not visible here.
- the lamination device 1 further comprises a second lamination sheet 5 with a second pressure surface 5a facing the underside of the laminate product 2.
- the first lamination sheet 4 and the second lamination sheet 5 are made of stainless steel, so that the pressure surfaces are particularly smooth and heat-resistant.
- the lamination sheets 4, 5 are so thin that they can be transported flexibly on a transport roller.
- the lamination sheets 4, 5 have bores 4c, 5c in a lateral edge region running parallel to the longitudinal axis L, into which transport pins of a transport roller can engage.
- the lamination device 1 further comprises a first heating plate 6, which is arranged above the first lamination sheet 4 for heating the same, and a second heating plate 7, which is arranged below the second lamination sheet 5 for heating the same. Between the First heating plate 6 and a top side 4b of the first lamination sheet 4 is a first intermediate material 8 and between the second heating plate 7 and the second lamination sheet 5 a second intermediate material 9 is arranged, which each serve to equalize pressure during lamination and ensure a more uniform temperature distribution during the heating phase.
- the first lamination sheet 4 has a first recess not visible here and the second lamination sheet 5 has a second longitudinally extending recess 11.
- the second recess 11 is designed as a groove and is delimited in the direction perpendicular to the longitudinal axis L by the edge region of the second lamination sheet 5, in which the holes 5c are present, and the second pressure surface 5a.
- the second recess 11 has a width which is greater than the width of the tab 3, so that the tab 3 can optionally be arranged completely over an area of the second recess 11 or below the first recess. In the situation shown here, the laminate product 2 is positioned as intended during the lamination process.
- Fig. 2 shows the first exemplary embodiment of the lamination device 1 Fig. 1 in a cross-sectional view.
- the section runs perpendicular to the longitudinal axis L.
- the tab 3 present on the laminate product 2 is between the first recess 10, which is present in the first lamination sheet 4 adjacent to the first pressure surface 4a, and the second recess 11, which is present adjacent to the second pressure surface 5a of the second lamination sheet 5, is arranged.
- the first recess 10 and the second recess 11 are arranged mirror-symmetrically to one another in relation to a central plane M defined between the first lamination plate 4 or the first pressure surface 4a and the second lamination plate 5 or the second pressure surface 5a.
- the laminate product 2 is between the first pressure surface 4a of the first lamination sheet 4 and the second Pressure surface 5a of the second lamination sheet 5 is clamped under pressure, the first lamination sheet 4, mediated via the first intermediate material 8, being heated by the first heating plate 6 and the second laminating sheet 5, mediated via the second intermediate material 9, being heated by the second heating plate, so that the layers present in the laminate product 2 are cohesively connected.
- the tab 3, which is arranged in sections between at least two layers of the laminate product 2, is advantageously also connected to the laminate product 2 in a materially bonded manner by lamination.
- the tab 3 is located at least largely between the first recess 10 of the first lamination sheet 4 and the second recess 11 of the second lamination sheet 5, so that the tab 3 is arranged in a cavity 12 defined between the first recess 10 and the second recess 11 during lamination .
- contact of the tab 3 with the first lamination sheet 4 and the second lamination sheet 5 is avoided and the distance is further increased, so that the tab 3 is subject to overall lower and more uniform heating due to the air cushion surrounding it.
- the degree of shrinkage of the tab that usually occurs during lamination is advantageously reduced considerably, so that a consistently high quality of the tab 3 is achieved after lamination has been completed with the usual strong connection to the laminate product 2.
- Fig. 3 shows a second exemplary embodiment of a lamination device 101 with a laminate product 102 arranged therein in a partially cut-away perspective view. Structurally compared to the first exemplary embodiment in Fig. 1 The same components are given the same reference numbers, whereas structurally modified components have been given a reference number incremented by 100.
- the second exemplary embodiment of a lamination device 101 shown here like that in Fig. 1 and 2 shown first embodiment a first lamination sheet 104 with a first pressure surface facing the top side 102a of the laminate product 102 and not visible here, and a second lamination sheet 105 with a second pressure surface 105a facing the underside of the laminate product 102.
- the first lamination sheet 104 and the second lamination sheet 105 are also made of stainless steel and are just as thin so that they can be transported flexibly on a transport roller.
- the lamination sheets 104, 105 have bores 4c, 5c in an edge region running laterally parallel to the longitudinal axis L, into which transport pins of a transport roller can engage.
- the second exemplary embodiment of the lamination device 101 comprises a first heating plate 6, which is arranged above the first lamination sheet 104 for heating the same, and a second heating plate 7, which is arranged below the second lamination sheet 105 for heating the same.
- a first intermediate material 8 is arranged between the first heating plate 6 and the first lamination sheet 104 and a second intermediate material 9 is arranged between the second heating plate and the second lamination sheet 105, which serves to equalize pressure and ensure a more uniform temperature distribution in the heating phase during lamination.
- the first lamination sheet 104 has a first slot-shaped recess 113 next to the first recess not visible here, and the second lamination sheet 105 has a second slot-shaped recess 114 next to the second recess 111.
- at least part of the tab 103 present on the side of the laminate product 102 is arranged between the recesses 113, 114 of the first lamination sheet 104 and the second lamination sheet 105, so that particularly heat-sensitive areas of the tab 103 are further away from the first heating plate 6 or the second heating plate 7 are spaced apart.
- Fig. 4 shows the second embodiment of the lamination device 101 out of Fig. 3 in a cross-sectional view.
- the section runs perpendicular to the longitudinal axis L.
- the laminate product 102 is clamped under pressure between the first pressure surface 104a of the first lamination sheet 104 and the second pressure surface 105a of the second lamination sheet 105, the first lamination sheet 104 being mediated via the first intermediate material 8, is heated by the first heating plate 6 and the second lamination sheet 105, mediated via the second intermediate material 9, is heated by the second heating plate, so that the layers present in the laminate product 102 are cohesively connected.
- the tab 103 which is arranged in sections between at least two layers of the laminate product 2, is thereby advantageously connected to the laminate product 102 in a materially bonded manner by lamination.
- the second exemplary embodiment of the lamination device 101 shown here has a further modification of the first lamination sheet 104 and the second lamination sheet 105.
- the first lamination sheet 104 has a first slot-shaped recess 113, the first recess 113 being between the first pressure surface 104a and the first recess 110 of the first lamination sheet 104 is arranged.
- the second lamination sheet 105 has a second slot-shaped recess 114, the second recess 114 being arranged between the second pressure surface 105a and the second recess 111 of the second lamination sheet 105.
- Part of the tab 103 of the laminate product 102 is advantageously arranged between the first recess 113 and the second recess 114, so that the cavity 112 is further enlarged in the area of the first recess 113 and the second recess 114, so that the through the first heating plate 6 or .
- the heat introduced into the second heating plate 7 is further reduced due to the increased air cushion in this area.
- the first slot-shaped recess 113 and the second slot-shaped recess 114 lie mirror-symmetrically opposite each other in the second exemplary embodiment shown here. Alternatively, it can also be provided that the first recess is opposite the second Recess is arranged offset.
- the invention was explained above using an exemplary embodiment in which the recesses are designed as grooves with a flat bottom, which is advantageously particularly easy to produce.
- the recesses are optionally stepped or uneven, i.e. that the depths of the recesses can be variable at least in a direction transverse to the longitudinal axis L.
- the invention was further explained above using an exemplary embodiment in which only one recess is present in the lamination sheet. It goes without saying that several recesses can also be present in the area of the depressions, if necessary.
Abstract
Die Erfindung betrifft eine Laminierungsvorrichtung zur Herstellung eines Laminatproduktes mit einer Lasche, umfassend ein entlang einer Längsachse längs erstrecktes erstes Laminationsblech mit einer der Oberseite des Laminatproduktes zugeordneten ersten ebenen Andruckfläche, wobei neben der ersten ebene Andruckfläche eine erste Vertiefung in dem ersten Laminationsblech vorgesehen ist, und ein zweites Laminationsblech mit einer der Unterseite des Laminatproduktes zugeordneten zweiten ebenen Andruckfläche, wobei neben der zweiten Andruckfläche eine zweite Vertiefung in dem zweiten Laminationsblech vorhanden ist. Es ist die Aufgabe der Erfindung, eine Laminierungsvorrichtung zur Herstellung eines Laminatproduktes und ein Verfahren zur Herstellung eines Laminatproduktes anzugeben, welche die Verbindung einer Lasche mit einem Schichtkörper in möglichst gleichbleibend hoher Qualität ermöglichen. Dies wird dadurch geschaffen, dass die erste Vertiefung und die zweite Veriefung als nuten ausgebildet sind, wobei die erste Vertiefung in der Nähe eines Randbereichs des ersten Laminationsbleches und die zweite Vertiefung in der Nähe des Randbereichs des zweiten Laminationsbleches angeordnet ist.The invention relates to a lamination device for producing a laminate product with a tab, comprising a first lamination sheet extending along a longitudinal axis with a first flat pressure surface assigned to the top of the laminate product, a first recess being provided in the first lamination sheet in addition to the first flat pressure surface, and a second lamination sheet with a second flat pressure surface assigned to the underside of the laminate product, with a second recess being present in the second lamination sheet next to the second pressure surface. It is the object of the invention to provide a lamination device for producing a laminate product and a method for producing a laminate product, which enable the connection of a tab to a laminated body with the highest possible quality. This is achieved in that the first depression and the second groove are designed as grooves, the first depression being arranged near an edge region of the first lamination sheet and the second depression being arranged near the edge region of the second lamination sheet.
Description
Die Erfindung betrifft eine Laminierungsvorrichtung zur Herstellung eines Laminatproduktes mit einer Lasche. Weiter betrifft die Erfindung ein Verfahren zur Herstellung eines Laminatproduktes mit einer Lasche unter Verwendung der erfindungsgemäßen Laminierungsvorrichtung.The invention relates to a lamination device for producing a laminate product with a tab. The invention further relates to a method for producing a laminate product with a tab using the lamination device according to the invention.
Aus der Praxis sind Herstellungsverfahren zur Herstellung von geschichteten Laminatprodukten, insbesondere Sicherheitsdokumenten mit Sicherheitsmerkmalen bekannt, wobei bei solchen Verfahren Laminationsbleche verwendet werden, welche als Bezugsebene definierte Andruckflächen aufweisen, die während der Laminierung unter Druck und erhöhter Temperatur mit den zu verbindenden Schichten in Berührung gebracht werden, um die einzelnen Schichten miteinander stoffschlüssig zu verbinden. Bei dem Laminatprodukt kann es sich um ein Datenblatt handeln, welches in einem Reisepass mittels einer Lasche durch Vernähung oder Ähnliches eingebunden werden muss. Die Lasche ist dabei beispielsweise zwischen den zu verbindenden Schichten angeordnet und ragt seitlich heraus, damit das Datenblatt später über die Lasche mit dem Reisepassdeckel gelenkig verbunden werden kann. Die Lasche sollte aufgrund ihrer Funktion als Gelenk gegenüber dem Reisepassdeckel möglichst stabil sein, sodass sich das Datenblatt nicht mit der Zeit lockert oder löst.In practice, manufacturing processes for producing layered laminate products, in particular security documents with security features, are known, with such processes using lamination sheets which have pressure surfaces defined as a reference plane, which are brought into contact with the layers to be connected during lamination under pressure and elevated temperature in order to connect the individual layers together in a material bond. The laminate product can be a data sheet that must be bound into a passport using a flap by sewing or something similar. The tab is arranged, for example, between the layers to be connected and protrudes laterally so that the data sheet can later be connected to the passport cover in an articulated manner via the tab. Due to its function as a joint in relation to the passport cover, the tab should be as stable as possible so that the data sheet does not become loose or detached over time.
In der Regel weisen die für die Herstellung verwendeten Laminationsbleche im Bereich der Lasche Erhöhungen bzw. zusätzliches Material auf, um den Höhenunterschied zwischen der relativ dünnen Lasche und dem meist dickeren Datenblatt zu überbrücken und hierdurch die Temperatur zu reduzieren. Dies ist insbesondere dann von Bedeutung, wenn die Lasche aus einem Material besteht, welches sich durch die erhöhte Temperatur zusammenzieht. Dies führt dennoch bei manchen Laschenmaterialien, insbesondere thermoplastischem Polyurethan dazu, dass die Lasche eine nicht immer gleichbleibende Qualität aufweist, da diese nach der Laminierung aufgrund der Schrumpfung mangelhaft ist.As a rule, the lamination sheets used for production have elevations or additional material in the area of the tab in order to bridge the height difference between the relatively thin tab and the usually thicker data sheet and thereby reduce the temperature. This is particularly important if the tab is made of a material that contracts due to the increased temperature. However, with some tab materials, especially thermoplastic polyurethane, this means that the tab does not always have consistent quality because it is defective due to shrinkage after lamination.
Es ist die Aufgabe der Erfindung, eine Laminierungsvorrichtung zur Herstellung eines Laminatproduktes und ein Verfahren zur Herstellung eines Laminatproduktes anzugeben, welche die Verbindung einer Lasche mit einem Schichtkörper in möglichst gleichbleibend hoher Qualität ermöglichen.It is the object of the invention to provide a lamination device for producing a laminate product and a method for producing a laminate product, which enable the connection of a tab to a laminated body with the highest possible quality.
Die vorgenannte Aufgabe wird erfindungsgemäß durch eine Laminierungsvorrichtung gemäß Anspruch 1 und einem Verfahren zur Herstellung eines Laminatproduktes gemäß Anspruch 10 gelöst.The aforementioned object is achieved according to the invention by a lamination device according to
Gemäß einem Aspekt der Erfindung ist eine Laminierungsvorrichtung zur Herstellung eines Laminatproduktes mit einer insbesondere ein Gelenk bildenden Lasche geschaffen. Die Laminierungsvorrichtung umfasst ein entlang einer Längsachse längs erstrecktes erstes Laminationsblech mit einer der Oberseite des Laminatproduktes zugeordneten ersten ebenen Andruckfläche, wobei neben der ersten ebenen Andruckfläche eine erste Vertiefung in dem ersten Laminationsblech vorhanden ist. Die Laminierungsvorrichtung umfasst weiter ein zweites Laminationsblech mit einer der Unterseite des Laminatproduktes zugeordneten zweiten ebenen Andruckfläche, wobei neben der zweiten Andruckfläche eine zweite Vertiefung in dem zweiten Laminationsblech vorhanden ist. Die erfindungsgemäße Laminierungsvorrichtung zeichnet sich dadurch aus, dass die erste Vertiefung und die zweite Vertiefung als Nuten ausgebildet sind, wobei die erste Vertiefung in der Nähe eines Randbereichs des ersten Laminationsbleches und die zweite Vertiefung in der Nähe eines Randbereichs des zweiten Laminationsbleches angeordnet ist. Vorteilhaft ist es hierdurch möglich, die an dem Laminatprodukt durch die Laminierung zu befestigende Lasche zwischen die erste Vertiefung und die zweite Vertiefung anzuordnen, sodass die Lasche während der Laminierung nicht in Kontakt mit den Andruckflächen steht und darüber hinaus sogar einen vergrößerten Abstand zu dem Laminationsblech aufweist. Vorteilhaft können die als Nuten ausgebildete erste Vertiefung und die zweite Vertiefung mit wohl definierten Maßen hergestellt werden, sodass sichergestellt werden kann, dass die Lasche einen wohl definierten Abstand zu dem Laminationsblech bzw. den Vertiefungen aufweist. Vorteilhaft führt dies im Gegensatz zu dem aus dem Stand der Technik bekannten Überbrücken durch Verwendung einer Erhöhung bzw. von Ausgleichsmaterial zu einer verbesserten Qualität der Lasche, insbesondere bei Verwendung von Laschen aus einem Kunststoffmaterial wie thermoplastischem Polyurethan, welches bei erhöhter Temperatur schrumpft. Da die Lasche insbesondere zur gelenkigen Verbindung des Laminatproduktes beispielsweise in einem Reisepass oder ähnlichem geeignet sein soll, muss die an dem Laminatprodukt anzuordnende Lasche möglichst von hoher Qualität sein. Insbesondere soll vermieden werden, dass die mit der Zeit immer wieder vorgenommenen gelenkigen Bewegungen des Laminatproduktes über das durch die Lasche gebildete Gelenk möglichst nicht zu einer Lockerung oder sogar einem Herauslösen des Laminatproduktes führen.According to one aspect of the invention, a lamination device for producing a laminate product with a tab, in particular forming a joint, is created. The lamination device comprises a first lamination sheet extending along a longitudinal axis with a first flat pressure surface assigned to the top side of the laminate product, a first recess being present in the first lamination sheet in addition to the first flat pressure surface. The lamination device further comprises a second lamination sheet with a second flat pressure surface assigned to the underside of the laminate product, with a second recess being present in the second lamination sheet in addition to the second pressure surface. The lamination device according to the invention is characterized in that the first recess and the second recess are designed as grooves, the first recess being arranged near an edge region of the first lamination sheet and the second recess being arranged near an edge region of the second lamination sheet. This advantageously makes it possible to arrange the tab to be attached to the laminate product by lamination between the first recess and the second recess, so that the tab is not in contact with the pressure surfaces during lamination and even has an increased distance from the lamination sheet . The first depression designed as grooves and the second depression can advantageously be produced with well-defined dimensions, so that it can be ensured that the tab has a well-defined distance from the lamination sheet or the depressions. This leads advantageously In contrast to the bridging known from the prior art, using an increase or compensating material results in improved quality of the tab, especially when using tabs made of a plastic material such as thermoplastic polyurethane, which shrinks at elevated temperatures. Since the tab should be particularly suitable for the articulated connection of the laminate product, for example in a passport or the like, the tab to be arranged on the laminate product must be of as high a quality as possible. In particular, it should be avoided that the repeated articulated movements of the laminate product over the joint formed by the tab over time do not lead to a loosening or even a detachment of the laminate product.
Besonders bevorzugt sind die erste Vertiefung und die zweite Vertiefung spiegelsymmetrisch zu einer zwischen dem ersten Laminationsblech und dem zweiten Laminationsblech definierten Mittelebene angeordnet. Vorteilhaft kann die Lasche so über ihre gesamte Länge in einer wohl definierten Position zwischen der ersten Vertiefung und der zweiten Vertiefung angeordnet werden, sodass jeder Punkt der Oberseite der Lasche und der ihm gegenüberliegende Punkt der Unterseite der Lasche jeweils wohl definierte Abstände zu dem Laminationsblech aufweisen.Particularly preferably, the first recess and the second recess are arranged mirror-symmetrically to a central plane defined between the first lamination sheet and the second lamination sheet. The tab can advantageously be arranged over its entire length in a well-defined position between the first recess and the second recess, so that each point on the top of the tab and the point opposite it on the underside of the tab each have well-defined distances from the lamination sheet.
Besonders bevorzugt verlaufen die erste Vertiefung und die zweite Vertiefung jeweils parallel zu der Längsachse. Vorteilhaft ist es hierdurch möglich, die an dem Laminatprodukt vorhandene Lasche ebenso parallel zu der Längsachse anzuordnen, sodass die Lasche über ihre gesamte Länge zwischen die erste Vertiefung und die zweite Vertiefung während der Laminierung angeordnet werden kann.Particularly preferably, the first depression and the second depression each run parallel to the longitudinal axis. This advantageously makes it possible to arrange the tab present on the laminate product parallel to the longitudinal axis, so that the tab can be arranged over its entire length between the first recess and the second recess during lamination.
In einer besonders bevorzugten Ausbildung ist vorgesehen, dass die erste Vertiefung und zweite Vertiefung verschiedene Tiefen aufweisen. Vorteilhaft können so asymmetrische Aufbauten des Laminatproduktes oder auch der Lasche selbst flexibel berücksichtigt werden. Beispielsweise könnte die Lasche auch mehrschichtige aufgebaut sein, wobei hierdurch unterschiedliche Temperaturverläufe in Bezug auf eine Oberseite der Lasche und eine Unterseite der Lasche vorteilhaft oder sogar notwendig sein können, welche durch die Anpassung der jeweiligen Tiefen der ersten Vertiefung oder der zweiten Vertiefung realisiert werden kann. Alternativ hierzu kann es jedoch auch vorgesehen sein, dass die erste Vertiefung und die zweite Vertiefung dieselben Tiefen aufweisen.In a particularly preferred embodiment it is provided that the first depression and second depression have different depths. Advantageously, asymmetrical structures of the laminate product or the tab itself can be flexibly taken into account. For example, the tab could can also be constructed in multiple layers, whereby different temperature profiles in relation to an upper side of the tab and an underside of the tab can be advantageous or even necessary, which can be realized by adjusting the respective depths of the first recess or the second recess. Alternatively, however, it can also be provided that the first depression and the second depression have the same depths.
In einer vorteilhaften Weiterbildung weist die erste Vertiefung eine erste Tiefe zwischen 40 und 90 µm und zweite Vertiefung eine zweite Tiefe zwischen 40 und 90 µm auf. Besonders bevorzugt weist die erste Vertiefung und die zweite Vertiefung jeweils einen flachen Bodenbereich auf. Zweckmäßigerweise definiert der Bodenbereich eine parallel zu der Mittelebene versetzte Ebene. Vorteilhaft wird hierdurch ein jeweils möglichst gleichbleibender Abstand zwischen der Lasche und der ersten Vertiefung bzw. der zweiten Vertiefung über die gesamte Länge der Lasche erreicht.In an advantageous development, the first depression has a first depth between 40 and 90 μm and the second depression has a second depth between 40 and 90 μm. Particularly preferably, the first depression and the second depression each have a flat bottom area. The floor area expediently defines a plane offset parallel to the central plane. This advantageously achieves a distance between the tab and the first recess or the second recess that is as constant as possible over the entire length of the tab.
Zweckmäßigerweise definieren die erste Vertiefung und die zweite Vertiefung einen sich parallel zur Längsachse längserstreckenden Hohlraum. Vorteilhaft ist der Hohlraum dazu vorgesehen, dass die Lasche des Laminatproduktes während der Laminierung zumindest größtenteils in dem Hohlraum positioniert wird, sodass die Lasche von den Laminationsblechen weiter beabstandet ist und zudem eine günstigere Temperaturverteilung erzielt wird. Insbesondere wird die Lasche nicht so schnell und so stark erhitzt, während das sonstige Laminatprodukt mit den üblichen Temperaturen und Drücken laminiert wird.The first depression and the second depression expediently define a cavity which extends longitudinally parallel to the longitudinal axis. The cavity is advantageously provided so that the tab of the laminate product is at least largely positioned in the cavity during lamination, so that the tab is further spaced from the lamination sheets and a more favorable temperature distribution is also achieved. In particular, the tab is not heated as quickly or as strongly while the rest of the laminate product is laminated at the usual temperatures and pressures.
Besonders bevorzugt weist der Hohlraum oder die Vertiefungen eine senkrecht zu der Längsachse verlaufende Breite auf, welche mindestens die Breite der in dem Hohlraum anzuordnenden Lasche aufweist. Vorteilhaft wird so sichergestellt, dass die Lasche gegebenenfalls auch vollständig mit ihrer ganzen Breite zwischen die erste Vertiefung und die zweite Vertiefung angeordnet werden kann.Particularly preferably, the cavity or the depressions have a width which runs perpendicular to the longitudinal axis and which has at least the width of the tab to be arranged in the cavity. This advantageously ensures that the tab can optionally be arranged completely with its entire width between the first recess and the second recess.
Bei einer ersten bevorzugten Ausgestaltung grenzt die erste Andruckfläche an die erste Vertiefung und die zweite Andruckfläche an die zweite Vertiefung an. Vorteilhaft ist es gegenüber einem unbearbeiteten Laminationsblech lediglich erforderlich, die entsprechenden Vertiefungen in die Laminationsbleche einzuarbeiten. Die Vertiefung können dabei sowohl mechanisch als auch chemisch hergestellt werden.In a first preferred embodiment, the first pressure surface adjoins the first recess and the second pressure surface adjoins the second recess. Advantageously, compared to an unprocessed laminated sheet, it is only necessary to incorporate the corresponding depressions into the laminated sheets. The depression can be produced both mechanically and chemically.
In einer bevorzugten Weiterbildung ist vorgesehen, dass zumindest das erste Laminationsblech zwischen der ersten Andruckfläche und der ersten Vertiefung eine erste Ausnehmung aufweist, welche die erste Andruckfläche und die erste Vertiefung in einer Richtung quer, insbesondere senkrecht zu der Längsachse voneinander beabstandet. In einer besonders bevorzugten Ausgestaltung ist die erste Ausnehmung als Schlitz ausgebildet.In a preferred development, it is provided that at least the first lamination sheet has a first recess between the first pressure surface and the first recess, which spaced the first pressure surface and the first recess from one another in a direction transverse, in particular perpendicular to the longitudinal axis. In a particularly preferred embodiment, the first recess is designed as a slot.
Besonders bevorzugt weist das zweite Laminationsblech zwischen der zweiten Andruckfläche und der zweiten Vertiefung eine zweite Ausnehmung auf, welche die zweite Andruckfläche und die zweite Vertiefung in einer Richtung quer, insbesondere senkrecht zu der Längsachse voneinander beabstandet. Vorteilhaft können in dem Bereich der Ausnehmung besonders hitzeempfindliche Bestandteile, welche an der Lasche oder zumindest in einem an die Lasche angrenzenden Bereich des Laminatproduktes angeordnet sind, nochmals besser vor der während der Laminierung auftretenden Wärme, welche zur Laminierung bzw. Verbindung der in dem Laminatprodukt zu verbindenden Schichten notwendig ist, geschützt werden.Particularly preferably, the second lamination sheet has a second recess between the second pressure surface and the second recess, which spaced the second pressure surface and the second recess from one another in a direction transverse, in particular perpendicular to the longitudinal axis. Advantageously, in the area of the recess, particularly heat-sensitive components, which are arranged on the tab or at least in an area of the laminate product adjacent to the tab, can be even better protected from the heat occurring during lamination, which is used to lamination or connection of the in the laminate product connecting layers is necessary to be protected.
Nach einem weiteren Aspekt der Erfindung wird ein Verfahren zur Herstellung eines mehrschichtigen Laminatproduktes angegeben, umfassend in einem ersten Verfahrensschritt ein Bereitstellen einer Laminierungsvorrichtung, wobei die Laminierungsvorrichtung wie vorstehend beschrieben ausgebildet ist. In einem zweiten Verfahrensschritt ist das Positionieren eines Stapels von zumindest zwei miteinander zu verbindenden Schichten und einer zwischen den Schichten angeordneten, seitlich abragenden Lasche zwischen dem ersten Laminationsblech und dem zweiten Laminationsblech vorgesehen, wobei die erste Andruckfläche des ersten Laminationsbleches oberhalb der Oberseite der obersten Schicht des herzustellenden Laminatproduktes und die zweite Andruckfläche des zweiten Laminationsbleches unterhalb der Unterseite der untersten Schicht des herzustellen Laminatproduktes angeordnet wird. Weiter umfasst das Verfahren in einem dritten Verfahrensschritt das Laminieren der zu verbindenden Schichten unter Druck und erhöhter Temperatur. Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, dass die Lasche nach dem Positionieren zumindest teilweise zwischen der ersten Vertiefung in dem ersten Laminationsblech und der zweiten Vertiefung in den zweiten Laminationsblech angeordnet ist. Vorteilhaft wird die Lasche während des nachfolgenden Verfahrensschrittes des Laminierens keiner zu hoher Temperatur ausgesetzt, sodass die Lasche nur unwesentlich in seiner Ausdehnung beeinflusst wird und somit eine gleichbleibend hohe Qualität aufweist.According to a further aspect of the invention, a method for producing a multilayer laminate product is specified, comprising, in a first method step, providing a lamination device, the lamination device being designed as described above. In a second method step, the positioning of a stack of at least two layers to be connected to one another and a laterally projecting tab arranged between the layers is provided between the first lamination sheet and the second lamination sheet, the first pressure surface of the first laminating sheet is arranged above the top of the top layer of the laminate product to be produced and the second pressure surface of the second laminating sheet is arranged below the underside of the bottom layer of the laminate product to be produced. Furthermore, in a third process step, the method includes laminating the layers to be connected under pressure and elevated temperature. The method according to the invention is characterized in that, after positioning, the tab is at least partially arranged between the first recess in the first lamination sheet and the second recess in the second lamination sheet. Advantageously, the tab is not exposed to excessively high temperatures during the subsequent lamination process step, so that the tab's expansion is only slightly influenced and thus has a consistently high quality.
Besonders bevorzugt wird die Lasche parallel zu der Längsachse des ersten Laminationsbleches bzw. den Längsstreckungen der ersten Vertiefung und der zweiten Vertiefung beim Positonieren des Stapels Schichten ausgerichtet. Vorteilhaft so sichergestellt, dass die Lasche über ihre gesamte Länge und für eine wohl definierte Breite zwischen der ersten Vertiefung und der zweiten Vertiefung während der nachfolgenden Laminierung angeordnet ist.Particularly preferably, the tab is aligned parallel to the longitudinal axis of the first lamination sheet or the longitudinal extensions of the first recess and the second recess when positioning the stack of layers. This advantageously ensures that the tab is arranged over its entire length and for a well-defined width between the first recess and the second recess during the subsequent lamination.
Weitere Vorteile, Weiterbildungen und Eigenschaften der Erfindung ergeben sich aus der nachstehenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie aus den abhängigen Ansprüchen.Further advantages, further developments and properties of the invention result from the following description of a preferred exemplary embodiment and from the dependent claims.
Die Erfindung wird nunmehr unter Bezugnahme auf die anliegenden Zeichnungen anhand bevorzugter Ausführungsbeispiele der Erfindung näher erläutert.
- Fig. 1
- zeigt ein erstes Ausführungsbeispiel einer Laminierungsvorrichtung mit darin angeordneten Laminatprodukt in einer teilweise freigeschnittenen Perspektivansicht.
- Fig. 2
- zeigt das erste Ausführungsbeispiel der Laminierungsvorrichtung aus
Fig. 1 in einer Querschnittsansicht. - Fig. 3
- zeigt ein zweites Ausführungsbeispiel einer Laminierungsvorrichtung mit darin angeordneten Laminatprodukt in einer teilweise freigeschnittenen Perspektivansicht.
- Fig. 4
- zeigt das zweite Ausführungsbeispiel der Laminierungsvorrichtung aus
Fig. 3 in einer Querschnittsansicht.
- Fig. 1
- shows a first exemplary embodiment of a lamination device with a laminate product arranged therein in a partially cut-out perspective view.
- Fig. 2
- shows the first embodiment of the lamination device
Fig. 1 in a cross-sectional view. - Fig. 3
- shows a second embodiment of a lamination device with a laminate product arranged therein in a partially cut-out perspective view.
- Fig. 4
- shows the second embodiment of the lamination device
Fig. 3 in a cross-sectional view.
Weiter umfasst die Laminierungsvorrichtung 1 ein zweites Laminationsblech 5 mit einer der Unterseite des Laminatproduktes 2 zugewandten zweiten Andruckfläche 5a. Das erste Laminationsblech 4 als auch das zweite Laminationsblech 5 bestehen aus Edelstahl, sodass die Andruckflächen besonders glatt und hitzebeständig sind. Gleichzeitig sind die Laminationsbleche 4, 5 so dünn, dass diese flexibel auf einer Transportrolle transportiert werden können. Hierzu weisen die Laminationsbleche 4, 5 in einem seitlichen parallel zu der Längsachse L verlaufendem Randbereich Bohrungen 4c, 5c auf, in welche Transportstifte einer Transportrolle eingreifen können.The
Die Laminierungsvorrichtung 1 umfasst weiter eine erste Heizplatte 6, welche oberhalb des ersten Laminationsbleches 4 zur Beheizung desselben angeordnet ist und eine zweite Heizplatte 7, welche unterhalb des zweiten Laminationsbleches 5 zur Beheizung desselben angeordnet ist. Zwischen der ersten Heizplatte 6 und einer Oberseite 4b des ersten Laminationsbleches 4 ist ein erstes Zwischenmaterial 8 und zwischen der zweiten Heizplatte 7 und dem zweiten Laminationsblech 5 ist ein zweites Zwischenmaterial 9 angeordnet, welche während der Laminierung jeweils dem Druckausgleich und einer gleichmäßigeren Temperaturverteilung bei der Aufheizphase dienen.The
Das erste Laminationsblech 4 weist eine hier nicht sichtbare erste Vertiefung und das zweite Laminationsblech 5 weist eine zweite längs erstreckte Vertiefung 11 auf. Die zweite Vertiefung 11 ist als Nut ausgebildet und wird in der Richtung senkrecht zu der Längsachse L durch den Randbereich des zweiten Laminationsbleches 5, in dem die Bohrungen 5c vorhanden sind, und der zweiten Andruckfläche 5a begrenzt. Die zweite Vertiefung 11 weist dabei eine Breite auf, welche größer als die Breite der Lasche 3 ist, sodass die Lasche 3 gegebenenfalls vollständig über einen Bereich der zweiten Vertiefung 11 bzw. unterhalb der ersten Vertiefung angeordnet werden kann. In der hier gezeigten Situation ist das Laminatprodukt 2 so positioniert, wie es während des Laminierungsvorganges vorgesehen ist.The
Das Laminatprodukt 2 ist in der hier gezeigten Situation zwischen der ersten Andruckfläche 4a des ersten Laminationsbleches 4 und der zweiten Andruckfläche 5a des zweiten Laminationsbleches 5 unter Druck eingespannt, wobei das erste Laminationsblech 4, vermittelt über das erste Zwischenmaterial 8, durch die erste Heizplatte 6 aufgeheizt wird und das zweite Laminationsblech 5, vermittelt über das zweite Zwischenmaterial 9, durch die zweite Heizplatte aufgeheizt wird, so dass die in dem Laminatprodukt 2 vorhandenen Schichten stoffschlüssig verbunden werden. Die Lasche 3, welche zwischen zumindest zwei Schichten des Laminatproduktes 2 abschnittsweise angeordnet ist, wird hierdurch vorteilhaft ebenso durch die Laminierung mit dem Laminatprodukt 2 stoffschlüssig verbunden.In the situation shown here, the
Die Lasche 3 befindet sich zumindest größtenteils zwischen der ersten Vertiefung 10 des ersten Laminationsbleches 4 und der zweiten Vertiefung 11 des zweiten Laminationsbleches 5, sodass die Lasche 3 während der Laminierung in einem zwischen der ersten Vertiefung 10 und der zweiten Vertiefung 11 definierten Hohlraum 12 angeordnet ist. Hierdurch wird auf der einen Seite ein Kontakt der Lasche 3 mit dem ersten Laminationsblech 4 und den zweiten Laminationsblech 5 vermieden und zudem nochmals der Abstand weiter vergrößert, sodass die Lasche 3 aufgrund des sie umgebenden Luftpolsters einer insgesamt geringeren und auch gleichmäßigeren Erwärmung unterliegt. Vorteilhaft reduziert sich der bei der Laminierung üblicherweise auftretende Schrumpfungsgrad der Lasche erheblich, sodass eine gleichbleibend hohe Qualität der Lasche 3 nach Beendigung der Laminierung bei gewohnt fester Verbindung mit dem Laminatprodukt 2 erzielt wird.The
Das hier gezeigte zweite Ausführungsbeispiel einer Laminierungsvorrichtung 101 umfasst ebenso wie das in
Ebenso umfasst das zweite Ausführungsbeispiel der Laminierungsvorrichtung 101 eine erste Heizplatte 6, welche oberhalb des ersten Laminationsbleches 104 zur Beheizung desselben angeordnet ist und eine zweite Heizplatte 7, welche unterhalb des zweiten Laminationsbleches 105 zur Beheizung desselben angeordnet ist. Auch hier ist zwischen der ersten Heizplatte 6 und dem ersten Laminationsblech 104 ein erstes Zwischenmaterial 8 und zwischen der zweiten Heizplatte und dem zweiten Laminationsblech 105 ein zweites Zwischenmaterial 9 angeordnet, welches den Druckausgleich und einer gleichmäßigeren Temperaturverteilung bei der Aufheizphase während der Laminierung dient.Likewise, the second exemplary embodiment of the
Das erste Laminationsblech 104 weist neben der hier nicht sichtbaren ersten Vertiefung eine erste schlitzförmige Ausnehmung 113 auf und das zweite Laminationsblech 105 weist neben der zweiten Vertiefung 111 eine zweite schlitzförmige Ausnehmung 114 auf. Vorteilhaft ist zumindest ein Teil der an dem Laminatprodukt 102 seitlich vorhandenen Lasche 103 zwischen den Ausnehmungen 113, 114 des ersten Laminationsbleches 104 und des zweiten Laminationsbleches 105 angeordnet, sodass besonders hitzeempfindliche Bereiche der Lasche 103 nochmals weiter von der ersten Heizplatte 6 bzw. der zweiten Heizplatte 7 beabstandet sind.The
Zusätzlich zu dem ersten Ausführungsbeispiel aus
Vorstehend wurde die Erfindung anhand eines Ausführungsbeispiels erläutert, bei dem die Vertiefungen als Nuten mit einem ebenen Boden ausgebildet sind, was vorteilhaft besonders einfach herzustellen ist. Je nach Aufbau der zwischen den Vertiefungen anzuordnenden Lasche kann es jedoch auch vorgesehen sein, dass die Vertiefungen gegebenenfalls gestuft oder uneben ausgebildet sind, d.h. dass die Tiefen der Vertiefungen zumindest in einer Richtung quer zu der Längsachse L variabel sein können. Weiter wurde die Erfindung vorstehend anhand eines Ausführungsbeispiels erläutert, bei dem nur eine Ausnehmung in dem Laminationsblech vorhanden ist. Es versteht sich, dass auch mehrere Ausnehmungen im Bereich der Vertiefungen vorhanden sein können, soweit erforderlich.The invention was explained above using an exemplary embodiment in which the recesses are designed as grooves with a flat bottom, which is advantageously particularly easy to produce. However, depending on the structure of the tab to be arranged between the recesses, it can also be provided that the recesses are optionally stepped or uneven, i.e. that the depths of the recesses can be variable at least in a direction transverse to the longitudinal axis L. The invention was further explained above using an exemplary embodiment in which only one recess is present in the lamination sheet. It goes without saying that several recesses can also be present in the area of the depressions, if necessary.
Claims (15)
dass die erste Vertiefung (10; 110) und die zweite Vertiefung (11; 111) als Nuten ausgebildet sind, wobei die erste Vertiefung (10; 110) in der Nähe eines Randbereichs des ersten Laminationsbleches (4; 104) und die zweite Vertiefung (11; 111) in der Nähe eines Randbereichs des zweiten Laminationsbleches (5; 105) angeordnet ist.Lamination device for producing a laminate product (2; 102) with a tab (3; 103), comprising
that the first recess (10; 110) and the second recess (11; 111) are designed as grooves, the first recess (10; 110) being in the vicinity of an edge region of the first lamination sheet (4; 104) and the second recess ( 11; 111) is arranged near an edge region of the second lamination sheet (5; 105).
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DE102022118339.4A DE102022118339A1 (en) | 2022-07-21 | 2022-07-21 | Laminating device for producing a laminate product with a tab and method for producing a laminate product |
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EP4309912A1 true EP4309912A1 (en) | 2024-01-24 |
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EP23185342.5A Pending EP4309912A1 (en) | 2022-07-21 | 2023-07-13 | Lamination device for producing laminate product having tab, and method for producing laminate product |
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