WO1997018274A1 - Technique de stratification pour imprimante a laser - Google Patents

Technique de stratification pour imprimante a laser Download PDF

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Publication number
WO1997018274A1
WO1997018274A1 PCT/US1996/017514 US9617514W WO9718274A1 WO 1997018274 A1 WO1997018274 A1 WO 1997018274A1 US 9617514 W US9617514 W US 9617514W WO 9718274 A1 WO9718274 A1 WO 9718274A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminating
laminating material
heat
assembly
temperature
Prior art date
Application number
PCT/US1996/017514
Other languages
English (en)
Inventor
Ghanshyam Popat
Original Assignee
Avery Dennison Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Avery Dennison Corporation filed Critical Avery Dennison Corporation
Priority to AU75299/96A priority Critical patent/AU7529996A/en
Publication of WO1997018274A1 publication Critical patent/WO1997018274A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/18—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
    • B32B37/182—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only one or more of the layers being plastic
    • B32B37/185—Laminating sheets, panels or inserts between two discrete plastic layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
    • B32B38/1833—Positioning, e.g. registration or centering
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6582—Special processing for irreversibly adding or changing the sheet copy material characteristics or its appearance, e.g. stamping, annotation printing, punching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
    • B32B2037/0069—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus the apparatus being originally designed for another function, e.g. printer, photocopier
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00789—Adding properties or qualities to the copy medium

Definitions

  • the present invention relates to an assembly and a method for laminating sheet material in a common office machine such as a laser printer or a photocopier using heat-activated adhesive.
  • U.S. Patent No. 4,243,458 which issued January 6, 1981 , to J. D. Giulie and which describes a method for making a prefabricated laminating packet with a tab.
  • the laminating packet according to Giulie has a pair of laminating sheets which are held together in a proper relationship by a pull-off tab attached by means which are not heat responsive such as special tape.
  • the pull tab enables an operator to utilize such laminating packets with laminating machines having heated platens and rollers and either with or without a dedicated carrier. After the laminating sheets have been heated, the tab is removed and discarded.
  • Drawbacks of such a laminating packet include the need to utilize a dedicated laminating machine as well as the specialized pull-tab structure for use with laminating machines, both drawbacks unnecessarily increasing the cost of utilizing such laminating technology.
  • one of the primary objects of the present invention is to provide laminating technology which is widely applicable and easily implemented.
  • a laminating assembly includes laminating material coated on one face thereof with heat-activated adhesive.
  • Sheet material to be laminated is positionable or mountable within the laminating material against the heat-activated adhesive so that the sheet material (or other flat material to be laminated) is enveloped or sandwiched by the laminating material.
  • the laminating material with the sheet material sandwiched therein may then be fed through a machine having heated rollers such as a laser printer, a photocopier, or other similar office machine to activate the heat-activated adhesive, thereby laminating the sheet material.
  • the laminating material may be one single sheet of laminating material which is foldable about a central transverse fold line, or two sheets of laminating material.
  • room- temperature-active, pressure-sensitive adhesive may be applied to the laminating material to hold the sheet material in place during the lamination process.
  • the room-temperature-active adhesive is applied in any desired pattern or position, but it is preferable for this adhesive to be applied along the fold line for easiest alignment and positioning of the sheet material to be laminated.
  • one particular advantage of the present invention is that the laminating technology laminates sheet material by coating the laminating material with a heat-activated adhesive which is activated by temperatures common to the heated rollers of office machines such as laser printers or photocopiers, for example, an effective temperature of about 175 degrees to 250 or 300 degrees Fahrenheit for a sheet going through the rollers.
  • a dedicated laminating machine is not required. Furthermore, while the laminating assembly is being fed through a laser printer or a photocopier, a user may print alphanumeric text onto the laminating material at the same time or at some time in the future after the sheet material has already been laminated. This is particularly advantageous for customizing exhibits and the like.
  • a method for laminating sheet material includes coating laminating material with heat-activated adhesive, mounting sheet material within the laminating material, and feeding the sandwich structure of laminate and sheet material into a laser printer.
  • the invention may also include the application of room-temperature-active, pressure-sensitive adhesive to the laminating material to hold the sheet material in place during the lamination process.
  • sheet material may be laminated by a common office machine such as a laser printer or a photocopier.
  • a user may also print on the laminating material during or after the lamination process. This also results in eliminating the need for a dedicated laminating machine and trained personnel to operate such a machine, and accordingly provides a more economical and convenient laminating method.
  • FIG. 1 is a top view of an exemplary embodiment of a laminating assembly illustrating the principles of laminating technology of the present invention
  • FIG. 2 is a side view of a laminating assembly shown with sheet material to be laminated mounted or sandwiched therein;
  • FIG. 3 is a perspective view of a laminating assembly with the sandwiched sheet material being fed into a laser printer;
  • FIG. 4 is a top view of a laminating assembly with sheet material laminated therein, particularly showing printing on the laminating assembly; and
  • FIG. 5 is a cross-sectional view of another exemplary embodiment of a laminating assembly illustrating the principles of laminating technology of the present invention.
  • the laminating assembly 10 generally includes laminating material 12 coated on one side or face thereof with heat-activated adhesive 14.
  • the sheet of laminating material 12 may be divided into two substantially equal portions 16 and 18 along a central fold line 20 transversely defined substantially across the middle of the laminating material 12.
  • the laminating material 12 may be made from any suitable laminating material.
  • Laminating material is generally plastic-like and is nonreactive or inert up to relatively high temperatures in order for a laminating machine to activate the adhesive with heat while not damaging the laminating material itself.
  • An example of such laminating material is polyethylene terephthalate, commonly known as mylar.
  • the laminating assembly 10 is shown with the laminating material 12 folded substantially in half along the fold line 20.
  • Stock to be laminated e.g., sheet material 22 such as paper, is positioned between the portions 16 and 18 of the laminating material 12 with the heat-activated adhesive
  • the laminating material 12 is preferably at least twice as large in dimensional as the sheet material 22 to be laminated, whereby each portion 16 and 18 is at least the same size as and preferably a little larger than the sheet material 22 so that opposing edges of the halves 16 and 18 meet and align with each other. Further, the sheet material 22 should be centered within the folded laminating material 12 between the portions 16 and 18. At room temperatures, the heat-activated adhesive 14 is not active so that the adhesive 14 is not substantially tacky; therefore, the sheet material 22 may be moved freely around on the laminating material 12 against the adhesive 14 for desired positioning.
  • the laminating material 12 with the centrally positioned, enveloped sheet material 22 is fed into a laser printer 24 as shown by arrow 26.
  • the laminate-material/sheet-material combination is preferably fed into the printer 24 by means of a single-load tray 28, which is common to laser printers or other office machines, but may also be fed by means of a dedicated paper tray as well.
  • the fold line 20 it is also preferable for the fold line 20 to define the leading edge of the laminating assembly 10 during the printing operation to minimize the possibility of the laminating material 12 folding back and catching on different internal parts of the laser printer 24. With the fold line 20 defining the leading edge of the laminating assembly 10, the laminating assembly 10 is then fed through the laser printer 24 along the longitudinal axis of the laminating material 12, with the fold line 20 defining a transverse axis.
  • Laser printers such as the one shown in FIG. 3 typically employ rollers to advance printing stock therethrough.
  • the temperature of these rollers and other heated elements within the printer 24 is typically in the range of about 375 degrees Fahrenheit to 450 degrees Fahrenheit.
  • the effective temperature of the rollers relative to sheet material fed through them is estimated to be in the range of 175 degrees Fahrenheit to 250 or 300 degrees Fahrenheit. Therefore, the adhesive 14 used to coat the laminating material 12 is preferably heat activatable around the latter temperature range, i.e. , approximately 150 degrees to 275 degrees and, more generally, below the effective temperature of the office printing machine to be used.
  • the laminating material 12 is then preferably nonreactive or inert to heat within the temperature range at which the laser printer operates.
  • the heat from the rollers, printing heads, heating elements, and/or other internal heated structures activate the adhesive 14, causing the adhesive 14 to adhere to the sheet material 22 and to the corresponding opposing overlapping edge portions of the laminating material 12.
  • the sheet material 22 is therefore laminated within the laminating material 12 and protected from moisture, dust, and so on.
  • the overall thickness of the laminate-material/sheet-material structure must be on the order which a laser printer can handle without jamming or malfunctioning.
  • This operating thickness range for most laser printers is approximately 2 mils to 15 mils. Therefore, the thickness of the laminate- material/sheet-material structure should also be in this approximate operating thickness range.
  • paper for use with laser printers and photocopiers has a thickness approximately in the range of 2 mils to 5 mils.
  • the heat-activated adhesive 14 is preferably coated onto the laminating material 12 with a thickness in the range of approximately '/. mil to 1 mil.
  • the thickness of the laminating material 12 is preferably in the range of approximately l '/ mils to 3 mils. Accordingly, the overall thickness of the laminating assembly 10 with the sheet material 22 sandwiched therein may be in the range of approximately 6 mils to 12 mils, depending upon the specific application, but will most often be in the range of approximately 10 mils to 12 mils.
  • the laminating technology disclosed herein is shown in relation to a laser printer, any other machines with heating elements may be used with the laminating assembly 10, including other office machines, such as photocopiers, facsimile machines, and multifunction machines with facsimile and photocopy capability, or dedicated laminating machines, if desired.
  • room-temperature-active adhesive 30 is preferably applied to the laminating material 12 on the same face as the heat- activated adhesive 14.
  • the room-temperature-active adhesive 30 is active, i.e. , tacky, at room temperatures and is preferably pressure sensitive. More specifically, the room-temperature-active adhesive 30 is applied to at least one of the portions 16 or 18 of the laminating material 12 defined by the fold line 20. As shown in the exemplary embodiment of FIG.
  • the room-temperature-active adhesive 30 is applied to the laminating material 12 on portion 18 along the fold line 20, extending transversely from one longitudinal edge to the other.
  • the room-temperature- active adhesive 30 it is preferable for the room-temperature- active adhesive 30 to be applied or layered directly onto the heat-activated adhesive
  • the room-temperature-active adhesive 30 may be applied directly to the laminating material 12 without the heat-activated adhesive 14 extending over the strip 30, depending upon the particular laminating application or production technique.
  • the room-temperature-active adhesive 30 when the sheet material 22 to be laminated is placed, positioned, or mounted on one of the portions 16 or 18, the room-temperature- active, pressure-sensitive adhesive 30 aids in holding the sheet material 22 in place while the other portion 16 or 18 is folded over to sandwich the sheet material 22 within the laminating material 12.
  • the room-temperature-active adhesive 30 further aids in holding the sheet material 22 in place while the laminate-material/sheet- material combination is being handled prior to and during the lamination process.
  • a single strip of adhesive 30 applied along the fold line 20 is effective in holding one of the edges of the sheet material 22 in alignment with the fold line 20, as well as generally aligning the sheet material 22 with the other edges of the laminating material 12. Also according to the laminating technology disclosed herein is the application of additional room-temperature adhesive to other areas of the laminating material 12, if desired, to further secure the sheet material 22 or to secure other areas of the sheet material 22 within the laminating material 12.
  • FIG. 4 is shown the sheet material 22 laminated within the laminating material 12.
  • the top edge of the sheet of material 24 may abut the fold line 20, particularly if the room-temperature-active adhesive 30 is applied along the fold line 20.
  • the laminating assembly according to the laminating technology described thus far may employ common office machines such as laser printers, photocopiers, and multifunction facsimile/photocopy machines to provide the necessary heat to activate the heat-activated adhesive, then it is further preferable to be able to print indicia or other text onto the laminating material 12. The printing of alphanumeric text may take place while the lamination process initially takes place, as shown in FIG.
  • the sheet material 22 laminated by the laminating material 12 may be a letter serving as an exhibit in, for example, a legal proceeding. Therefore, a user may desire to print corresponding indicia on the laminating material 12 by means of a computer word- processing program and the laser printer 24 or by means of a photocopier.
  • An additional exemplary embodiment of a laminating assembly 40 according to the principles of the present invention is shown in FIG. 5.
  • the laminating assembly 40 according to this embodiment includes two separate laminating material sheets 42 and 44 coated with heat-activated adhesive 46 on one side or face thereof.
  • the laminating material sheets 42 and 44 may be coated with the heat-activated adhesive 46 individually or may be formed by cutting the laminating material 12 shown in the exemplary embodiment of FIG. 1 along the fold line 20, such that the portions 16 and 18 substantially form the laminating material sheets 42 and 44.
  • a sheet of material 48 to be laminated is positioned or placed between the laminating material sheets 42 and 44 with the layered or sandwiched combination of sheets being fed into, for example, a laser printer as shown and described in relation to FIG. 3.
  • the laminating material sheets 42 and 44 it is preferable for the laminating material sheets 42 and 44 to be slightly larger than the sheet of material 48 to be laminated so that the sheet of material 48 is completely protected on all sides from the elements.
  • room-temperature- active adhesive 50 may be applied to at least one but preferably both of the laminating material sheets 42 and 44. Although the room-temperature-active adhesive 50 may be applied in any desired pattern or position on the laminating material sheets 42 and 44, it is preferable for the adhesive 50 to be applied along edges of the laminating material sheets 42 and 44 to stably secure the sheet of material 48 between the laminating material sheets 42 and 44 prior to applying heat for lamination.
  • room-temperature-active, pressure-sensitive adhesive strips 50 in the form of strips at least along the edges of the laminating material sheets 42 and 44 which define the leading and trailing edges of the laminate assembly 40 while being fed into a heat-providing machine such as a laser printer.
  • only one laminating material sheet 42 may be used to laminate only one side of the sheet material 48 with the other side of the sheet material 48 remaining not laminated or exposed.
  • multiple sheets of the laminating material sheets 42 and 44 may be used to create a desired laminating effect or layered sheet-material/laminating-material structure; or the upper layer and/or the lower layer of laminating material may be formed of two or more adjacent or slightly overlapping sheets.
  • an exemplary method of the laminating technology of the present invention generally includes the steps of coating the heat-activated adhesive 14 or 46 onto one face of the laminating material 12 or 42 and 44; placing, positioning, mounting, or enveloping the sheet material 12 or 48 onto or within the laminating material against the heat-activated adhesive to form a layered or sandwich structure; and feeding the laminate-and- sheet-material sandwich structure into a heat-providing machine such as a laser printer.
  • the method may further include the steps of applying room-temperature- active, pressure-sensitive adhesive 30 or 50 to the face of the laminating material coated with the heat-activated adhesive; and printing text onto the face of the laminating material which does not have the heat-activated adhesive coated thereon.
  • the sheet material 12 or 48 may be placed, positioned, or mounted against or on only one sheet of the laminating material 42 or 44 so as to laminate only one side of the sheet material.
  • the heat-activated adhesive 14 and 46 is preferably an amorphous polyhexane adhesive which is substantially clear at least upon activation and also resistant to ultraviolet light so as not to discolor or deteriorate over time.
  • suitable heat-activated adhesives may be used as well, including hot-melt adhesives or thermoplastic cements such as polyamide resins.
  • modifiers such as plasticizers, polymers, resinous materials, and waxes may be added to the heat-activated adhesive so that the heat-activated adhesive will be active at lower or higher temperatures or at a specific temperature below the temperature at which a particular office machine operates.
  • the heat-activated adhesive 14 and 46 is inactive at room temperatures which may be as high as approximately
  • Adcote ® 33G 1AM heat seal coating produced by Morton International, Inc. , of Chicago, Illinois.
  • Adcote 33G1AM is a solvent-based gel lacquer and may be used as a heat seal coating on polyester film, oriented polypropylene films, primed aluminum foil, and paper.
  • Adcote 33G1AM is formulated to seal to oriented polystyrene, HIPS, rigid polyvinylchloride, high-density polyethylene, or polypropylene. Coatings made from Adcote 33G 1AM are clear, have good blocking resistance, and good hot tack properties.
  • Typical properties of Adcote 33G1AM generally include: solids of about 28.5 % , viscosity of 450 cps at 125 °F, density of about 7. 1 lbs./gal. at 125 °F, solvents of Toluene/VM&P Naphtha, and a minimum heat-activation range of about 200°F to 250°F.
  • Adcote ® 37T77 water-based heat seal coating also produced by Morton International, Inc. , which is resistant to higher levels of moisture than is Adcote 33G1AM.
  • Typical properties of Adcote 37T77 generally include: solids of about 35% , viscosity of less than 350 cps at 77°F, density of about 8.2 lbs. /gal., and a minimum heat- activation range of about 180°F to 250°F.
  • the room-temperature-active adhesive 30 and 50 may be a propylene- hexene copolymer with a melting point of about 250 degrees Fahrenheit and a peel force of about two-and-a-half pounds to five pounds for a one-inch strip pulled off stainless steel.
  • This type of room-temperature-active, pressure-sensitive adhesive is described in U.S. Patent No. 5,262,216 issued on November 16, 1993, to G. H. Popat et al. , which is incorporated herein by reference.
  • the size of the laminating material should be at least slightly larger than the sheet material 22 and 48 to be laminated.
  • the laminating material 12 should be at least 8V2 inches by 22 inches and preferably 8% inches by 22 V* inches so that there is at least an eighth of an inch overlap around the edges of the sheet material 22. More generally, the laminating material should be at least one- and-a-half percent larger than the sheet material 22 and 48 to be laminated.
  • the laminating material 12 and the laminating material sheets 42 and 44 may be suitable adapted for use with other sizes of sheet material which are readily used in heat-providing office machines such as laser printers, for example, A4 (8.27 inches by 11.69 inches), legal (8V2 inches by 14 inches), and so on.
  • the laminating material 12, 42, and 44 it is preferable for the laminating material 12, 42, and 44 to be clear or translucent so that the sheet material 22 and 48 is viewable therethrough, and to be an ultraviolet-light retardant to provide further protection for the heat-activated adhesive 14 and 46 applied thereon.
  • the laminating assembly and method of the present invention may be configured for various types of stock or material to be laminated such as a document or a leaf from a tree, for example, and for various heat-providing devices such as heat presses used for mounting photographs or even household irons.
  • the heat-activated adhesive may be suitable modified to be active in any particular temperature range. Accordingly, the present invention is not limited to that precisely shown and described herein.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un dispositif et un procédé de stratification d'un produit en feuille (22) par sa prise en sandwich dans un produit de stratification (12) enduit d'un adhésif thermocollant (14, 46) et par l'acheminement du produit pris en sandwich dans une machine de bureau ordinaire à rouleaux chauffés, comme une imprimante à laser (24). Le produit de stratification (12) peut être soit plié sur une ligne de pliage centrale (20), soit coupé le long de cette ligne (20) pour former deux feuilles de produit de stratification (42, 44). L'adhésif thermocollant (14, 46) est rendu actif sur une plage de températures dans laquelle fonctionne l'imprimante à laser (24). Un adhésif actif à température ambiante, sensible à la pression (30, 50), est appliqué sur le produit de stratification (12) du même côté que l'adhésif thermocollant (14, 46), de telle sorte que le produit en feuille (22) peut être positionné d'une manière sûre et maintenu en place dans le produit de stratification (12) pendant l'opération de stratification.
PCT/US1996/017514 1995-10-31 1996-10-31 Technique de stratification pour imprimante a laser WO1997018274A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75299/96A AU7529996A (en) 1995-10-31 1996-10-31 Laser printer laminating technology

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US551,068 1983-11-14
US55106895A 1995-10-31 1995-10-31

Publications (1)

Publication Number Publication Date
WO1997018274A1 true WO1997018274A1 (fr) 1997-05-22

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Application Number Title Priority Date Filing Date
PCT/US1996/017514 WO1997018274A1 (fr) 1995-10-31 1996-10-31 Technique de stratification pour imprimante a laser

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Country Link
AU (1) AU7529996A (fr)
WO (1) WO1997018274A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0919369A2 (fr) * 1997-10-09 1999-06-02 HETZEL GmbH & Co. KG Procédé pour fabriquer une pochette de protection, et pochette de protection
DE20100328U1 (de) 2001-01-09 2001-03-29 Swedex GmbH & Co. KG, 41468 Neuss Laminiertasche
US20240085834A1 (en) * 2022-09-13 2024-03-14 Canon Kabushiki Kaisha Image forming system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061678A (en) * 1935-11-08 1936-11-24 Scott Clyde Composite film and picture and method of producing them
US2975091A (en) * 1955-07-21 1961-03-14 Brady Co W H Heat-resistant adhesive article
US4158587A (en) * 1977-09-26 1979-06-19 General Binding Corporation Method of producing laminated sheets using laminated pouch support
US4448834A (en) * 1981-04-15 1984-05-15 Geimuplast Peter Mundt Gmbh. & Co. Kg. Foil and method for protecting film
US4456639A (en) * 1982-06-07 1984-06-26 Sealtran Corporation Laminating film of thermoset polyester resin with external layer of embossable thermoplastic resin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061678A (en) * 1935-11-08 1936-11-24 Scott Clyde Composite film and picture and method of producing them
US2975091A (en) * 1955-07-21 1961-03-14 Brady Co W H Heat-resistant adhesive article
US4158587A (en) * 1977-09-26 1979-06-19 General Binding Corporation Method of producing laminated sheets using laminated pouch support
US4448834A (en) * 1981-04-15 1984-05-15 Geimuplast Peter Mundt Gmbh. & Co. Kg. Foil and method for protecting film
US4456639A (en) * 1982-06-07 1984-06-26 Sealtran Corporation Laminating film of thermoset polyester resin with external layer of embossable thermoplastic resin

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0919369A2 (fr) * 1997-10-09 1999-06-02 HETZEL GmbH & Co. KG Procédé pour fabriquer une pochette de protection, et pochette de protection
EP0919369A3 (fr) * 1997-10-09 2000-03-15 HETZEL GmbH & Co. KG Procédé pour fabriquer une pochette de protection, et pochette de protection
AU752465B2 (en) * 1997-10-09 2002-09-19 Hetzel Gmbh & Co. Kg Process for the production of laminated pockets and laminated pocket
DE20100328U1 (de) 2001-01-09 2001-03-29 Swedex GmbH & Co. KG, 41468 Neuss Laminiertasche
US20240085834A1 (en) * 2022-09-13 2024-03-14 Canon Kabushiki Kaisha Image forming system

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