Card laminating apparatus

• US 6,283,188 B1
• Filed: 09/25/1998
• Issued: 09/04/2001
• Est. Priority Date: 09/25/1998
• Status: Expired

• Current Assignee: Zebra Technologies Corporation
• Original Assignee: Atlantek, Inc. (Zebra Technologies Corporation)
• Inventors: Maynard, Raymond, Rothwell, Christian S.
• Primary Examiner(s): GRAY, LINDA LAMEY
• Application Number:
  US09/160,902
• Time in Patent Office: 1,075 Days
• Field of Search: 156/353, 156/361, 156/543, 156/559, 156/556, 156/521, 156/555, 156/517, 156/519, 156/264, 156/256, 156/263, 156/354, 156/270, 156/583.1, 156/351, 156/364, 156/563
• US Class Current: 156/521
• CPC Class Codes: B32B 2425/00 Cards, e.g. identity cards, credit cards
• CPC Class Codes: B32B 37/0015 to avoid warp or curl
• CPC Class Codes: B32B 37/226 Laminating sheets, panels or inserts between two continuous plastic layers
• CPC Class Codes: Y10T 156/1339 Delivering cut part in sequence to serially conveyed articles
• CPC Class Codes: Y10T 156/1761 Stacked serially

Abstract

A two-sided card laminating apparatus simultaneously applies and bonds laminate sheets to opposing faces of a two-sided card substrate. The apparatus includes two opposing laminating assemblies symmetrically mounted in mirror image relation on opposing sides of a substrate supply path. Individual sheets of laminate are cut from webs of lamina and transferred onto the card substrate at a convergence zone disposed on the substrate supply path. Each of the laminating assemblies includes a web of lamina, a cutter, and nip rollers disposed between the web and the cutter. The nip rollers advance the web in an upstream direction through the cutter into engagement with a transfer roller. As the laminate exits the cutter, the leading edge is captured between the outer surface of the transfer roller and a laminate guide where it is grabbed by the outer surface of the transfer roller. The outer surface of the transfer roller pulls the leading edge of the sheet of laminate in an upstream direction from the cutter toward the convergence zone. A transfer member disposed in the convergence zone strips the leading edge of the sheet of laminate from the outer surface of the transfer roller and transfers the sheet of laminate into overlying registration with the substrate as the substrate passes through the convergence zone. The substrate is transported along the substrate supply path through the convergence zone and between the two opposing heaters which symmetrically heat the card substrate to bond the laminate sheets to the card substrate.

Claims

1. A laminating apparatus for applying a laminate overlay sheet to a face of a substrate, said apparatus comprising:

a web of lamina;

a cutter configured to cut sheets of laminate from said web of lamina;

a pair of nip rollers disposed between the web of lamina and the cutter, said pair of nip rollers including a drive roller and an idle roller, said web of lamina passing between the pair of nip rollers, said nip rollers configured to selectively advance the web of lamina in an upstream direction through the cutter so that a leading edge of the web of lamina is downstream of the cutter;

a convergence zone at which a cut sheet of laminate and a substrate are brought into overlying registration;

a transfer roller disposed between the cutter and the convergence zone, said transfer roller having an outer surface which passes through the convergence zone;

a spring metal laminate guide member extending between the cutter and the convergence zone, said laminate guide member having a portion thereof formed in an arc corresponding to said outer surface of said transfer roller wherein the laminate guide member and the outer surface of the transfer roller cooperate to form a laminate supply path extending between the cutter and the convergence zone,

said outer surface of said transfer roller having an elastomeric member disposed thereon, said elastomeric member frictionally capturing said web of lamina,

said transfer roller being selectively rotated to pull the leading edge of said web of lamina in an upstream direction along the laminate supply path from the cutter toward the convergence zone, said cutter selectively cutting a sheet of laminate from the web of lamina while said web of lamina is captured on said transfer roller;

a transfer member disposed in the convergence zone, said transfer member configured to cooperate with the outer surface of the transfer roller during further rotation of the transfer roller to remove a leading edge of the sheet of laminate from the outer surface of the transfer roller and to transfer the sheet of laminate into overlying registration with the substrate;

a substrate transport device configured to selectively transport the substrate through the convergence zone beneath the transfer member;

a heater disposed downstream of the convergence zone, said substrate transport device transporting said substrate through said heater; and

a control configured to control the substrate transport device, the nip rollers, the cutter and the transfer roller.

2. The laminating apparatus of claim 1 wherein said web of lamina is mounted in a cassette, said cassette having an output zone, said drive roller being mounted on a frame of said apparatus, said idle roller being mounted on said cassette, said web of lamina being captured between said drive roller and said idle roller when the cassette is mounted on the frame.

3. The laminating apparatus of claim 1 wherein the transfer roller pulls the web along the lamina supply path faster than the pair of nip rollers advances the web.

4. The laminating apparatus of claim 1 further comprising a drive motor, and a gear train interconnecting the drive motor with the transfer roller and the drive roller of the nip rollers.

5. The laminating apparatus of claim 3 further comprising a drive motor, and a gear train interconnecting the drive motor with the transfer roller and the drive roller of the nip rollers.

6. The laminating apparatus of claim 5 where in s aid drive roller of the nip rollers includes a one-way clutch which allows free rotation of the drive roller in the downstream direction.

7. The laminating apparatus of claim 6 wherein the gear train is constructed and arranged to rotate an outer surface of the transfer roller at a greater speed than an outer surface of the drive roller of the nip rollers wherein the transfer roller pulls the web along the lamina supply path faster than the drive roller pushes the web.

8. The laminating apparatus of claim 1 wherein said transfer roller comprises a cylindrical core, and a plurality of resilient O-rings extending around the circumference of the cylindrical core, said O-rings projecting above an outer surface of the cylindrical core.

9. The laminating apparatus of claim 8 wherein the transfer member comprises a plate having a plurality of spaced fingers extending outwardly from a leading edge thereof, said fingers being disposed is closely spaced adjacent relation to an outer surface of the core of the transfer roller, said fingers extending between the projecting O-rings such that said fingers strip the laminate sheet away from the O-rings as the laminate sheet enters the convergence zone.

10. A two-sided laminating apparatus for applying laminate overlay sheets to opposing faces of a two-sided substrate, said apparatus comprising:

first and second laminating assemblies symmetrically mounted in mirror image relation on opposing sides of a substrate supply path, said substrate supply path including a convergence zone at which opposing sheets of laminate are brought together in overlying relation with the opposing faces of the substrate, each of said laminating assemblies comprising

a web of lamina;

a cutter configured to cut sheets of laminate from said web of lamina;

a pair of nip rollers disposed between the web of lamina and the cutter, said pair of nip rollers including a drive roller and an idle roller, said web of lamina passing between the pair of nip rollers, said pair of nip rollers configured to selectively advance the web of lamina in an upstream direction through the cutters so that a leading edge of the web is downstream of the cutter;

a transfer roller disposed between the cutter and the convergence zone, said transfer roller having an outer surface which passes through the convergence zone;

a spring metal laminate guide member extending between the cutter and the convergence zone, said laminate guide member having a portion thereof formed in an arc corresponding to said outer surface of said transfer roller wherein the laminate guide member and the outer surface of the transfer roller cooperate to form a laminate supply path extending between the cutter and the convergence zone,

said outer surface of said transfer roller having an elastomeric member disposed thereon, said elastomeric member frictionally capturing said web of lamina,

said transfer roller being selectively rotated to pull the leading edge of the web of lamina in an upstream direction along the laminate supply path from the cutter toward the convergence zone, said cutter selectively cutting a sheet of laminate from the web of lamina while said web of lamina is captured on said transfer roller;

a transfer member disposed in the convergence zone in adjacent relation to the transfer roller, said transfer member configured to cooperate with the outer surface of the transfer roller during further rotation of the transfer roller to strip a leading edge of the sheet of laminate from the outer surface of the transfer roller and transfer the sheet of laminate into overlying registration with the substrate; and

a heater disposed downstream of the convergence zone;

a substrate transport device configured to transport the substrate along the substrate supply path, said substrate passing through the convergence zone and between the respective transfer members of each laminating assembly wherein the laminate sheets are applied to the opposing faces of the substrate as the substrate passes through the convergence zone, said substrate transport device thereafter transporting said substrate further along said substrate supply path between said heaters wherein the laminate sheets are bonded to the substrate; and

a control configured to control the substrate transport device, the nip rollers, the cutter and the transfer roller.

11. The two-sided laminating apparatus of claim 10 wherein each of said webs of lamina are mounted in a cassette, said cassette having an output zone, said drive roller being mounted on a frame of said apparatus, said idle roller being mounted on said cassette, said web of lamina being captured between said drive roller and said idle roller when the cassette is mounted on the frame.

12. The two-sided laminating apparatus of claim 10 wherein each of the transfer rollers pulls the web of lamina faster than the associated pair of nip rollers advances the web.

13. The two-sided laminating apparatus of claim 10 wherein each of said laminating assemblies further comprises a drive motor, and a gear train interconnecting the drive motor with the respective transfer roller and the drive roller of the associated nip rollers.

14. The two-sided laminating apparatus of claim 12 wherein each of said laminating assemblies further comprises a drive motor, and a gear train interconnecting the drive motor with the respective transfer roller and the drive roller of the associated nip rollers.

15. The two-sided laminating apparatus of claim 14 wherein each of said drive rollers includes a one-way clutch which allows free rotation of the drive roller in the downstream direction.

16. The two-sided laminating apparatus of claim 15 wherein each of the gear trains is constructed and arranged to drive the outer surface of the respective transfer roller at a greater speed than an outer surface of the drive roller of the associated nip rollers such that the transfer rolls pulls the web faster than the drive roller pushes the web.

17. The two-sided laminating apparatus of claim 10 wherein each of said transfer rollers comprises a cylindrical core, and a plurality of resilient O-rings extending around the circumference of the cylindrical core, said O-rings projecting above an outer surface of the cylindrical core.

18. The two-sided laminating apparatus of claim 17 wherein each of the transfer members comprises a plate having a plurality of spaced fingers extending outwardly from a leading edge thereof, said fingers being disposed is closely spaced adjacent relation to outer surface of the core of the transfer roller, said fingers extending between the projecting O-rings such that said fingers are effective for stripping the laminate sheet away from the O-rings as the laminate sheet enters the convergence zone.

19. A laminate transport apparatus for applying a sheet of lamina to a face of a substrate, said apparatus comprising:

a convergence zone at which a sheet of laminate and a substrate are brought together in overlying registration;

a transfer roller having an outer surface which passes through the convergence zone, said transfer roller including a cylindrical core, and a plurality of resilient O-rings extending around the circumference of the cylindrical core, said O-rings projecting above an outer surface of the cylindrical core;

a laminate guide member having a portion thereof formed in an arc corresponding to said outer surface of said transfer roller, said laminate guide member having a downstream end for receiving a leading edge of said sheet of laminate and an upstream end terminating at said convergence zone, said laminate guide member curving around at least a portion of said outer surface of said transfer roller to form a laminate supply path extending from said downstream end of said guide member to said convergence zone;

a laminate advancer mounted adjacent to the downstream end of said laminate guide member, said laminate advancer configured to advance leading edge of said sheet of laminate into said laminate supply path, said transfer roller being configured to frictionally grab the leading edge of said sheet of laminate and pull said sheet of laminate in an upstream direction to said convergence zone; and

a transfer member disposed in the convergence zone configured to transfer said leading edge of said sheet of laminate from the outer surface of said roller into overlying registration with a corresponding surface of said substrate.

20. The laminating apparatus of claim 19 wherein the transfer member comprises a plate having a plurality of spaced fingers, said fingers being disposed adjacent to an outer surface of the core of the transfer roller, said fingers extending between the projecting O-rings such that said fingers strip said sheet of laminate away from the transfer roller.