Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-03-25
1993-07-20
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 75, C08J 906
Patent
active
052294285
ABSTRACT:
The present invention provides a method of lining a plastic closure top with a thermoplastic, non-cross linked curable, vinyl chloride copolymer plastisol composition that is plasticized with an effective low temperature fusing amount of (A) an epoxidized natural oil, (B) an organic diglycidyl ether and (C) a curing agent for the diglycidyl ether, the plastisol being stable with a shelf life of at least about four months, the method including heating, without preheating, the lining and the closure top at a temperature not over about 300.degree. F. for about 90 to 120 seconds using convection heating without pressure and without conductive heating, to fuse the composition and thereafter solidifying the fused composition and thereafter cure the composition to provide the lining with tensile and elongation measurements sufficient for a stable closure assembly.
REFERENCES:
patent: 3383337 (1968-05-01), Garling et al.
patent: 3627707 (1971-12-01), Giessler et al.
patent: 4031045 (1977-06-01), Goswami
patent: 4434251 (1984-02-01), Sasajima et al.
Foelak Morton
Owens-Illinois Closure Inc.
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