Method for producing sheet core material, and sheet core material

A core material and seat technology, applied to seat frames, vehicle seats, chairs, etc., can solve the problems of cost and time increase, and achieve the effect of suppressing excessive deformation

Active Publication Date: 2018-08-03
JSP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method leads to an increase in cost and time due to the necessity of such post-processing

Method used

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  • Method for producing sheet core material, and sheet core material
  • Method for producing sheet core material, and sheet core material
  • Method for producing sheet core material, and sheet core material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0098] preparation Figure 1 to Figure 4 The seat core material 1 of the first embodiment shown in FIG.

[0099] (1) Frame parts

[0100] As the frame member 3, a roughly rectangular wire structure is used. The wire structure has linear wires as the front frame part 24 and U-shaped wires as the rear frame part 25 and the two side frame parts 26a and 26b, which are connected to each other by the two plate parts 7a and 7b. Each wire rod has a diameter of 4.5mm and a tensile strength of 500N / mm² (JIS G3532 SWM-B) and is made of steel. Each of the side frame parts has a length of 400 mm, and the front frame part has a length of 800 mm. Each of the plate portions 7a and 7ab was made of an iron plate having a thickness of 1.2 mm, a longitudinal length of 80 mm, and a transverse length of 170 mm. Hook members 10a and 10b made of the same wire as above are connected to the plate portions 7a and 7b. A coupling protrusion 8 made of the same wire material as above is fixed at the ce...

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Abstract

Provided is a method for producing a sheet core material 1 that is constructed with a foam molded substrate 2 and a frame member 3 embedded in the periphery thereof, the method comprising: step (a) for obtaining the foam molded substrate 2 by heating thermoplastic resin foam particles within a mold cavity in which the frame member 3 is disposed, so as to cause the foam particles to be fuse and bond to each other and cause the frame member 3 to be embedded in the periphery of the foam molded substrate; and step (b) for forming voids S, S' in the foam molded substrate 2 at adjacent positions along the frame member 3 either at the same time as step (a) or after step (a). The voids S, S' are formed in a size and a shape that allow relative movement between the frame member 3 and the foam molded substrate 2 when the foam molded substrate contracts after step (b).

Description

technical field [0001] The present invention relates to a method for producing a seat core used in vehicle seat elements such as seat cushions and seat backs, and to a seat core. Background technique [0002] In recent years, expanded molded matrices obtained from expanded particles of thermoplastic resins have been increasingly used as seat core materials used in vehicle seat components. The reason for this is because foam-molded matrices have the advantage that they enable a reduction in their weight when compared with urethane foams and make it possible to produce seat cores with high strength. Such a foam-molded base can be obtained by an in-mold molding method in which thermoplastic resin foamed particles filled in a mold cavity are heated with high-temperature steam. [0003] In the foam-molded base of such a seat core, a frame member for maintaining the shape and strength of the seat core and metal fittings for attachment to a vehicle are provided (see Patent Documen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C27/14A47C7/18A47C7/24B60N2/90
CPCA47C27/14A47C7/24B29L2031/58B29C39/10B60N2/68B60N2/682B60N2/7017B32B2266/0292B60N2/90A47C7/18B60N2/5825
Inventor 高山敦夫植栗基晶桥本圭一
Owner JSP CORP
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