Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1983-02-18
1984-06-19
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
15624423, B32B 3130
Patent
active
044551843
ABSTRACT:
This invention provides a process for the lamination of a polyester, particularly polyethylene terephthalate, to a paperboard substrate which comprises coextruding a polyester layer and a polymeric adhesive layer onto a paperboard substrate. By use of this process, well adhered coatings of polyester can be obtained where the polyester is used in amounts as low as 10 pounds of polyester per ream. The adhesive layer can be pigmented thereby providing visual enhancement of the laminate product. Moreover, the paperboard can be treated with sizing agents or the like without serious adverse effects on the adherence of the polyester layer. Laminates produced in accordance with this invention are less costly than those of the prior art as they include less polyester per unit of surface.
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Champion International Corporation
Sommer Evelyn M.
Weston Caleb
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