Ultrasonically-sealable peelable seal

Details Ultrasonically-sealable peelable seal Ultrasonically-sealable peelable seal

1983-12-12

1985-06-04

Ives, Patricia C.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428 36, 428 41, 428 43, 428412, 4284758, 4284761, 4284796, 428481, 428483, 428516, 428518, 428519, 428520, 428345, 206631, 206484, B32B 2708, B65D 7300

Patent

active

045214670

ABSTRACT:
A packaging material has a peelable seal and a sealing of resin which is ultrasonically-sealable, but not readily heat-sealable backed by a backing layer of resin having a higher melting point than the sealing layer. The interlayer adhesion between the backing layer and the sealing layer is below the strength required to break the sealing layer. The thickness and material of the sealing material is utilized to control the seal strength of the peelable end seal of the package.

REFERENCES:
patent: 4252846 (1981-02-01), Romesberg et al.
patent: 4361237 (1982-11-01), Heiremans et al.
patent: 4430288 (1984-02-01), Bonis
patent: 4444828 (1984-04-01), Anthony et al.
patent: 4450028 (1984-05-01), Vilutis

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