Package making – Methods – Forming or partial forming a receptacle and subsequent filling
Patent
1977-09-14
1978-11-21
Massie, Jerome W.
Package making
Methods
Forming or partial forming a receptacle and subsequent filling
53377, 53487, 156290, 156306, 156322, 428194, 428296, B65B 702, B65B 5110
Patent
active
041259858
ABSTRACT:
A process for forming peelable seals between a layer of spunbonded olefin material and an unsupported film of polyethylene or to a supported film of a laminated or coated backing, such as polyethylene coated mylar, to form a peel-seal packet, container or pouch. The spunbonded olefin material is first pretreated with a heated die in the areas that are to form the peel-seal with heat and pressure suitable to render uniform surface characteristics to the spunbonded olefin. The heat, pressure and dwell time of the pretreatment are sufficient to reduce the high spots and internal weaknesses of the spunbonded olefin material following which a web of synthetic polymeric material having a heat sealable surface may be peelably sealed by a conventional heat sealing method.
REFERENCES:
patent: 3701699 (1972-10-01), Jackson
patent: 3910410 (1975-10-01), Shaw
patent: 3910410 (1975-10-01), Shaw
patent: 3923578 (1975-12-01), Hair
patent: 3926311 (1975-12-01), Laske
patent: 3982992 (1976-09-01), Moffitt
patent: 4014433 (1977-03-01), Cerwin
patent: 4036676 (1977-07-01), Pennington
patent: 4055454 (1977-10-01), Laske
patent: 4070222 (1978-01-01), Olson
Massie Jerome W.
Speckman Thomas W.
Vonco Products, Inc.
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