Composite synthetic paper
AssigneeOji Yuka Goseishi Co., Ltd.
InventorKatsukuni Nitta
Life of this patent
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Abstract
The invention provides composite synthetic paper comprising (A) plain weave fabric and (B) synthetic paper comprising a stretched resin film having an opacity of not less than 85%, a void volume of from 10 to 60%, and a thickness of from 30 to 500 .mu.m, with or without (C) opacifying layer interposed between (A) and (B), in which synthetic paper (B) may be composed of a biaxially stretched thermoplastic resin film as a base layer and a uniaxially stretched thermoplastic film containing 8 to 65% by weight of an inorganic fine powder as a paper-like layer. The composite synthetic paper is excellent in printability, tear resistance, waterproofness, sewability, and opacifying properties and useful as material for aprons, shop curtains, disposable clothing, maps, outdoor posters, signboards, hangers, flags, etc.
Claims9
A composite synthetic paper comprising
- (A) a plain weave fabric having a basis weight of from 50 to 200 g/m.sup.2 which is woven of warp threads of 40 to 150 denier at 50 to 140 ends per inch (2.54 cm) and weft threads of 40 to 150 denier at 50 to 140 picks per inch having adhered thereon (B) a synthetic paper comprising a stretched resin film having an opacity of not less than 85%, a void volume of from 10 to 60% as calculated according to formula (1):
- Void Volume (%)=(.rho..sub.0 -.rho.)/.rho..sub.0 .times.100(1)
- wherein .rho..sub.0 is a density of a film before stretching;
- and .rho. is a density of the film after stretching;
- wherein said synthetic paper (B) has a thickness of from 30 to 500 .mu.m.
A composite synthetic paper comprising
- (A) a plain weave fabric having a basis weight of from 50 to 200 g/m.sup.2 which is woven of warp threads of 40 to 150 denier at 50 to 140 ends per inch (2.54 cm) and weft threads of 40 to 150 denier at 50 to 140 picks per inch having adhered on both sides thereof (B) a synthetic paper comprising a stretched resin film having an opacity of not less than 85%, a void volume of from 10 to 60% as calculated according to formula (1):
- Void Volume (%)=(.rho..sub.0 -.rho.)/.rho..sub.0 .times.100(1)
- wherein .rho..sub.0 is a density of a film before stretching;
- and .rho. is a density of the film after stretching;
- wherein said synthetic paper (B) has a thickness of from 30 to 500 .mu.m .
A composite synthetic paper having an opacity of 100% which comprises
- (A) plain weave fabric having a basis weight of from 50 to 200 g/m.sup.2 which is woven of warp threads of 40 to 150 denier at 50 to 140 ends per inch and weft threads of 40 to 150 denier at 50 to 140 picks per inch having adhered thereon (B) synthetic paper comprising a stretched resin film having an opacity of not less than 85%, a void volume of from 10 to 60% as calculated according to formula (1), and a thickness of from 30 to 500 .mu.m , with (C) an opacifying layer being interposed between said plain weave fabric (A) and said synthetic paper (B),
- Void Volume (%)=(.rho..sub.0 -.rho.)/.rho..sub.0 .times.100(1)
- wherein .rho..sub.0 is a density of a film before stretching;
- and .rho. is a density of the film after stretching.
A composite synthetic paper comprising
- (A) a plain weave fabric having a basis weight of from 50 to 200 g/m.sup.2 which is woven of warp threads of 40 to 150 denier at 50 to 140 ends per inch (2.54 cm) and weft threads of 40 to 150 denier at 50 to 140 picks per inch having adhered on both sides thereof (B) a multi-layered synthetic paper composed of (b-1) a biaxially stretched thermoplastic resin film as a base layer and (b-2) a uniaxially stretched thermoplastic resin film containing 8 to 65% by weight of an inorganic fine powder as a paper-like layer, with its paper-like layer as a surface layer on each side, the multi-layered synthetic paper (B) having an opacity of not less than 85%, a void volume of from 10 to 60% as calculated according to formula (1), and a thickness of from 30 to 500 .mu.m , with (C) an opacifying layer being interposed between (A) and at least one of the base layers of multi-layered synthetic paper (B),
- Void Volume (%)=(.rho..sub.0 -.rho.)/.rho..sub.0 .times.100(1)
- wherein .rho..sub.0 is a density of a film before stretching;
- and .rho. is a density of the film after stretching.
Dependencies are inferred from the claim text.