Claims
- 1. A polyurethane cushion material comprising a foamed polyurethane having incorporated therein a mass of crimped polyester fiber filament of 50 to 1000 denier, in which said fiber filament has been twisted and then further twisted into a double crimped state, wet heat-set while in the double crimped state, and then opened up to form a three-oriented, crimped polyester fiber filament of 50 to 1000 denier and wherein said mass amounts to from 10 to 50 percent by weight in the polyurethane cushion material.
- 2. A cushion material according to claim 1, wherein the mass of fiber filament is a locked mass.
- 3. A cushion material according to claim 1, wherein the mass of fiber filament is a non-locked mass.
- 4. A cushion material according to claim 1, wherein the fiber filament is contained uniformly in a whole of the polyurethane cushion material.
- 5. A cushion material which comprises a layer of polyurethane cushion material according to claim 1, wherein said layer is bonded to a separate layer of fiber-free foamed polyurethane.
- 6. A cushion material according to claim 5, wherein said just named layer is bonded to a second separate layer of fiber-free foamed polyurethane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
50-138520 |
Nov 1975 |
JPX |
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Parent Case Info
This is a continuation of application Ser No. 742,568, filed Nov. 17, 1976, now abandoned.
US Referenced Citations (10)
Continuations (1)
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Number |
Date |
Country |
Parent |
742568 |
Nov 1976 |
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