Sealing cross-linked thermoplastic materials

Details Sealing cross-linked thermoplastic materials Sealing cross-linked thermoplastic materials

1976-12-22

1980-09-30

Lesmes, George F.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156272, 1563084, 428518, 20415914, 264 22, B29D 1700

Patent

active

042253730

ABSTRACT:
The strength of a heat seal which bonds irradiatively cross-linkable thermoplastic materials together can be significantly improved by irradiating the seal area after sealing is completed. This technique is especially effective for improving the seal strength of packaging film laminates such as those having a layer of saran and a layer of ethylene vinyl acetate copolymer.

REFERENCES:
patent: 2936261 (1960-05-01), Cole
patent: 2997419 (1961-08-01), Lawton
patent: 3106441 (1963-10-01), Harrison et al.
patent: 3864186 (1975-02-01), Balla
patent: 3891008 (1975-06-01), D'Entremont
patent: 3936565 (1976-02-01), Good
patent: 3997385 (1976-12-01), Osborne
patent: 4044187 (1977-08-01), Kremkau

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