Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1977-08-29
1978-11-14
Ansher, Harold
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
220359, 428354, 428355, 428458, 428462, 428906, B32B 1508, B32B 1520, B32B 2736, B32B 2732
Patent
active
041256654
ABSTRACT:
A linerless pressure-sensitive adhesive container sealing tape which comprises a backing laminate, a unique pressure-sensitive adhesive layer on one of the major surfaces of the laminate and a release coating on the other major surface of the laminate. The tape is wound upon itself to form a roll with the pressure-sensitive adhesive layer facing inwardly toward the axis of the roll. The backing preferably comprises a first polyester film, a thin layer of metal coated onto one major surface of said first film to metallize this surface, a second polyester film, and a laminating adhesive layer adhering the second film to the metallized surface of the first film. The pressure-sensitive adhesive layer consists of an adhesive composition based upon a mixture of S-I-S and S-B-S linear or radial thermoplastic and elastomeric block copolymers wherein the S-blocks are thermoplastic and are derived from styrene or styrene homologues and the I-blocks and B-blocks are elastomeric and derived from isoprene and butadiene, respectively, together with a relatively high melting point tackifier resin and a relatively low molecular weight S-block associating bonding resin.
REFERENCES:
patent: 3092250 (1963-06-01), Knutson et al.
patent: 3129816 (1964-04-01), Bond et al.
patent: 3152950 (1964-10-01), Palmquist et al.
patent: 3389827 (1968-06-01), Abere et al.
patent: 3679458 (1972-07-01), Sorell et al.
patent: 3740366 (1973-06-01), Sanderson et al.
patent: 3776805 (1973-12-01), Hansen
patent: 3949134 (1976-04-01), Willdorf
Bemmels Cyrus W.
Mumber Richard A.
Schirripa Thomas J.
Ansher Harold
Johnson & Johnson
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