Polyethylene foam laminating machine and method

Details Polyethylene foam laminating machine and method Polyethylene foam laminating machine and method

2006-07-18

2006-07-18

Sells, James (Department: 1734)

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With gas, vapor, or flame contact means for work

C156S359000, C156S499000, C156S555000, C156S582000

Reexamination Certificate

active

07077183

ABSTRACT:
A laminating machine and a method for the production of laminated polyethylene foam sheets is described. The machine comprises a conveyor belt having at least two laminating assemblies disposed in spaced-apart relationship therealong. Each laminating assembly has a hot air diffuser for dispensing an elongated ribbon of hot air across the conveyor belt and a press roll which is spaced behind the hot air diffuse. A sheet laminating slot is defined between the diffuse and the press roll. The top surface of a lower polyethylene foam sheet passing under the laminating assembly and the bottom surface of an upper polyethylene foam sheet entering the laminating slot are heated by the hot air ribbon and juxtaposed and pressed by the press roll whereby to fuse the two polyethylene foam sheets together. A plurality of polyethylene foam sheets can be laminated by having a plurality of laminating assemblies along the conveyor.

REFERENCES:
patent: 3959567 (1976-05-01), Bradley
patent: 4505774 (1985-03-01), Ariga et al.
patent: 4950352 (1990-08-01), Greller
patent: 5476568 (1995-12-01), Marion et al.

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