发明授权
US5506039A Sheet molding compounds, production processes therefor, and molded materials therefrom 失效
片状成型用化合物,其制造方法及其成型材料

Sheet molding compounds, production processes therefor, and molded
materials therefrom
摘要:
Sheet molding compounds which comprising two layers, one being a sheet molding compound layer containing a hollow, lightweight filler particles (referred to as Type A layer) and the other being another type of sheet molding compound layer not containing lightweight, hollow filler particles (referred to as Type B layer), with the above-mentioned Type A and Type B layers making up a consistently integrated structure.
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