Bottles and jars – Multilayer barrier structure – Coating or lamination
Patent
1982-04-12
1983-07-26
Dixon, Jr., William R.
Bottles and jars
Multilayer barrier structure
Coating or lamination
428 35, 525 88, 525 90, 525 91, B65D 2300, C08L 5300
Patent
active
043949150
ABSTRACT:
A hot melt adhesive especially useful for producing PET bottle assemblies comprises a blend of: (1) a block copolymer selected from the class consisting of: (a) A-B-A block copolymer where A is a monovinyl aromatic hydrocarbon and B is either a conjugated diene or a rubbery mono-olefin and (b) a teleblock copolymer comprising molecules having at least three branches radially branching out from a central hub, each said branch having polystyrene terminal blocks and a butadiene segment in the center; (2) an ethylene/vinyl acetate copolymer; (3) a tackifying resin which serves to extend the adhesive properties of the system; (4) a stabilizer; and (5) a wax or oil diluent. PET bottle assemblies prepared using the above adhesive compositions are more resistant to separation than those prepared with prior art compositions not containing the ethylene/vinyl acetate copolymer.
REFERENCES:
patent: 3749630 (1973-07-01), Bayer
patent: 3952898 (1976-04-01), Bayer
patent: 4212910 (1980-07-01), Taylor et al.
patent: 4357459 (1982-11-01), Runavot et al.
Dixon Jr. William R.
Findley Adhesives Inc.
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