Title:
BED MATTRESS AND MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3585003
Kind Code:
B2
Abstract:
PURPOSE: To provide improvement of cushion properties by preparing a cushion layer having three-dimensional network structure of specified apparent density and thickness from a thermoplastic resin wire of a specific diameter, and preparing a wadding layer of double track knitting of specific apparent density on the upper surface of the cushion layer.
CONSTITUTION: A cushion layer of this bed mattress is formed by three- dimensional structure of a continuous wire with a diameter of less than 5mm of thermoplastic elastic resin. The structure is formed through fusion bonding of wire at most of contacting points of bending and twisting wires. The outer surface is of a flat network structure, so that a favorable shape keeping characteristic is generated against external deformation applied through a wadding layer. The network structure is set to have apparent density of 0.05∼0.1g/cm3, and thickness of larger than 5mm. In order to improve permeability of the bed mattress, the wadding layer utilizes double track knitting made of fibers of thermoplastic resin, and the apparent density is set to be 0.2g/cm3 or lower.
Inventors:
Hideo Isoda
Yasufusa Hotta
Yasufusa Hotta
Application Number:
JP14357995A
Publication Date:
November 04, 2004
Filing Date:
June 09, 1995
Export Citation:
Assignee:
TOYO BOSEKI KABUSHIKI KAISHA
International Classes:
A47C21/00; A47C27/12; B68G1/00; (IPC1-7): A47C21/00; A47C27/12; B68G1/00
Domestic Patent References:
| JP7068061A | ||||
| JP7023834A | ||||
| JP6296535A | ||||
| JP5311559A | ||||
| JP4215710A |
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