Process for low temperature heat sealing of polyethylene

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428409, 4284111, 428500, 428511, 215 122, 15624411, 15624423, 15624424, 15624427, 2065243, B29C 4706, B32B 1508

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055365426

ABSTRACT:
A process of producing a heat sealed extrusion coated polyethylene article is disclosed. This process entails heat sealing, at a temperature below 95.degree. C. two opposing extrusion coated polyethylene laminate surfaces thereby welding the surfaces to effect a heat seal. The polyethylene has a narrow molecular weight distribution, a low melt index, a low swell ratio, and a polydispersity index below 5.

REFERENCES:
patent: 3875128 (1975-04-01), Suzuki et al.
patent: 5268230 (1993-12-01), Edwards et al.
patent: 5350476 (1994-09-01), Edwards et al.
Polyethylene by Renfrew and Morgan, at pp. 11-17.
Petroleum Refiner (1956) by Thomasson, McKetta and Ponder, p. 191.

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