Carrier release sheet for molding compound

Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing

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428 367, 4284744, 4284763, 428522, B29D 2200

Patent

active

059853913

ABSTRACT:
This invention concerns a multilayer film useful as release sheet for sheet molding compounds, comprising a first skin layer, a second skin layer, a barrier layer for monomeric resins wherein the barrier layer is between the first and second skin layers and the first and second skin layers comprise a mixture of polyolefin and adhesive resin. This invention also pertains to the multilayer films method of production, as well as an SMC sheet employing the multilayer film.

REFERENCES:
patent: 3791915 (1974-02-01), Goehring
patent: 3895988 (1975-07-01), Miller
patent: 3971866 (1976-07-01), Johnson
patent: 4215176 (1980-07-01), Tuller et al.
patent: 4233367 (1980-11-01), Ticknor
patent: 4409364 (1983-10-01), Schmukler
patent: 4444829 (1984-04-01), Bollen et al.
patent: 4474845 (1984-10-01), Hagerman et al.
patent: 4959189 (1990-09-01), Rohrbacher et al.
patent: 5126085 (1992-06-01), Thorp et al.
patent: 5601770 (1997-02-01), Maligie
Bollen et al., "Nylon Support Films for the Manufacture of SMC Products," 35.sup.th Annual Technical Conference, 1980, Reinforced Plastics/Companies Institute, The Society of the Plastics Industry, Inc., Section 7-C:1-3, 1980.
Bynel CXA Series 4100-- Production Information Sheet, "Series 4100 Including 4104, 4105, 4107, 4125, E364, and E409-- Anhydride-Modified Linear Low-Density Polyethylene," DuPont, 1980.

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