Method to improve adhesive of polyolefin surfaces

Details Method to improve adhesive of polyolefin surfaces Method to improve adhesive of polyolefin surfaces

1973-11-28

1976-10-12

White, Robert F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

264 83, 264241, C08F 808

Patent

active

039859401

ABSTRACT:
A powder of a polyolefin, such as a normal polyethylene, having a melt index of between 2 and 20 is oxidized slightly and thereafter is sintered into a layer which will adhere strongly by thermal fusion to a polyolefin surface and also to a polar surface such as that of a layer or article composed of a polyamide, polyurethane or polyester resin. Large industrial articles such as containers and building construction elements can be produced with desired strength and surface properties by use of a sintered layer of that oxidized polyolefin powder to join to a polyolefin layer a layer of a polar resin or a different polyolefin layer. By being sintered in the presence of a blowing agent, the slightly oxidized powder forms a foamed bonding layer which will securely join together layers having different thermal expansion coefficients.

REFERENCES:
patent: 3455483 (1969-07-01), Inklaar
patent: 3474159 (1969-10-01), Juveland et al.
patent: 3475369 (1969-10-01), Blunt
patent: 3493453 (1970-02-01), Ceresa et al.
patent: 3674593 (1972-07-01), Pearson et al.

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