Core member for fabrication of shaped plastic
AssigneesToyo Coth Co., Ltd., Japan U-Pica Company, Ltd.
InventorsKatsuhiko Takashima, Katsuhiro Moriwaki
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Abstract
The invention core member is prepared by treatment of non-woven fabric with a coating composition which comprises an emulsion-form curable vinyl polymer, heat-expandable microspheres, and a thiocyanate compound, and this core member is advantageously utilized with use of liquid-form unsaturated polyester-based molding composition which contains a cobalt-containing compound as cure accelerator, wherein color development becomes available when said unsaturated polyester-based liquid composition infiltrates into voids of the core member, due to encounter of the thiocyanate compound with the cobalt-containing compound, thereby infiltration of said liquid composition is monitored by use of the color development.
Claims8
A porous core member for fabricating a fiber-reinforced shaped plastic having a matrix structure comprising matrix portions and voids between the matrix portions capable of being infiltrated by a liquid resin, said matrix portions being formed of fibers randomly arranged in a non-woven fabric, said fibers having adhered thereto a cured vinyl resin having microvoids therein, and said vinyl resin containing a thiocyanate compound.
A resin-impregnated non-woven fabric adapted to form on heating a core member having a matrix structure for fabricating a fiber-reinforced shaped plastic, which comprises a non-woven fabric impregnated with an emulsion of a heat-curable vinyl resin containing heat-expandable microspheres and a thiocyanate compound.
Dependencies are inferred from the claim text.