Sealed cross-linked thermoplastic sheets

Details Sealed cross-linked thermoplastic sheets Sealed cross-linked thermoplastic sheets

1977-04-29

1978-11-28

Ives, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428515, 428516, 428520, 428420, 156272, 206484, 206497, B65D 8530, B32B 2708

Patent

active

041276884

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: 3617419 (1971-11-01), Fischer
patent: 3936565 (1976-02-01), Good
patent: 3997385 (1976-12-01), Osborne

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