Ligneous fibrous filler/olefinic plastic composite sheet for bonding
AssigneeNamba Press Works Co., Ltd.
InventorsFumi O Goto, Yasumasa Kasahara, Tatsuyuki Ishiura
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Abstract
A bondable wood cellulosic filler/olefinic plastic composite sheet material made by extruding in a sheet shape a mixture consisting of: (1) 40-60 parts by weight of an olefinic plastic; (2) 60-40 parts by weight of a wood cellulosic filler, the size thereof being 40-110 mesh and the water content being not exceeding 5%; and (3) 0.5-5.0 parts by weight of an additive mainly consisting of polypropylene modified by maleic anhydride or its derivative.
Claims17
A bondable wood cellulosic filler/olefinic plastic composite sheet material made by extruding in a sheet shape a mixture consisting of:
- (1) 40-60 parts by weight of an olefinic plastic:
- (2) 60-40 parts by weight of a wood cellulosic filler, the size thereof being 40-110 mesh and the water content thereof being not exceeding 5%,
- (3) 0.5-5.0 parts by weight of an additive mainly consisting of polypropylene modified by maleic anhydride or its derivative;
- and optionally
- (4) 3-8 parts by weight mica.
A composite sheet comprising:
- (1) 40-60 parts by weight of an olefinic plastic;
- (2) 60-40 parts by weight of a wood cellulosic filler, where the wood cellulosic filler is 40-110 mesh and the water content of the wood cellulosic filler does not exceed 5%;
- and
- (3) 0.5-5.0 parts by weight of polypropylene modified by maleic anhydride or its derivative.
Dependencies are inferred from the claim text.