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Molded foam article, method for manufacturing molded foam article, and seat for automobile

A technology of foam molding and manufacturing method, which is applied in vehicle seats, vehicle parts, special positions of vehicles, etc., can solve the problems of cumbersome operations, elastic deformation, difficult handling, etc., and achieves excellent seating comfort and less warpage. Effect

Active Publication Date: 2018-11-23
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the inventions described in Patent Documents 2 and 3, an additional process is required after the foam molding process, and this process requires skill.
And according to the inventions disclosed in Patent Documents 2 and 3, new problems are also worried
[0022] In particular, in the invention disclosed in Patent Document 2, in addition to the cumbersome work of inserting the insert covering almost the entire outer periphery of the molded body after molding, there is also a concern that the groove can hold the insert because it is narrow. The extent of the parts, so if the accuracy of the insert is poor, it is not easy to fit
At this time, there is concern that deflection occurs due to its own weight, or deformation that cannot be restored
[0031] In addition, when being transported, it may be elastically deformed by its own weight, making it difficult to maintain a constant shape, and there is also a concern that it will be difficult to transport.

Method used

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  • Molded foam article, method for manufacturing molded foam article, and seat for automobile
  • Molded foam article, method for manufacturing molded foam article, and seat for automobile
  • Molded foam article, method for manufacturing molded foam article, and seat for automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0233] On the basis of using the molded body mold provided with the above-mentioned groove and installing the above-mentioned insert in the mold in advance, the expanded olefin-based resin particles are filled, and steam with a steam pressure of 0.6 MPa in the main pipe is introduced into the mold, and the Heat for 3 seconds, heat for 5 seconds on one side, heat on the opposite side for 2.5 seconds, and heat on both sides for 11 seconds. After heating, spray water at a pressure of 0.4 MPa adjusted to 40°C (Celsius) from the back of the mold in mist form and cool. The water cooling process of the mold and the molded body was performed for 105 seconds, followed by an air cooling process of leaving nothing to do for 50 seconds, and then the molded body was taken out.

[0234] Immediately after taking out the molded article, it was dried under the above-mentioned conditions in a drying room, and then left to stand at room temperature (25° C.) for 8 hours.

[0235] In addition, aft...

Embodiment 2

[0241] Evaluation was performed in the same manner as in Example 1, except that the thickness of the insert member was made 4 mm thinner than the groove width of the molded body, and 2.8 mm wide notched grooves for engagement with the insert were provided at both ends.

[0242] The result is

[0243] The total amount of warping at evaluation point 1 was slightly larger than Example 1 by 3 mm.

[0244] Evaluation point 2 did not feel a great sense of discomfort at both ends and the center, but the buttocks felt the remaining groove in the center.

Embodiment 3

[0246] Except that the part where the thickness of the insert part is thicker than the groove width of the molded body + 0.2 mm is limited to 50 mm from both ends and 50 mm in the center (the total width is 150 mm, and the total is 30% of the total length of 450 mm) Other than that, evaluation was performed by the same method as in Example 1.

[0247] The result is

[0248] The total of the warpage at the evaluation point 1 was 2 mm as in Example 1.

[0249] Evaluation point 2 did not feel a particularly uncomfortable feeling at both ends and the center.

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PUM

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Abstract

This invention addresses the problem of providing a molded foam article having an integrated feeling and minimal warpage. A molded foam article 1 having an outer-shell-structure part 6 and an insert 11, the insert 11 being embedded in the outer-shell-structure part 6. The outer-shell-structure part 6 is separated into divided foam segments 15a, 15b. The divided foam segments 15a, 15b have a missing part 16 in which the foam body is missing. A fitting member 20 is mounted on the missing part 16. The molded foam article 1 is suitable as a rigidity-imparting member for a seat for an automobile.

Description

technical field [0001] The present invention relates to foam moldings. The molded foam product of the present invention is a molded foam product in which inserts such as metal are embedded in a foam and integrated. The foamed molded article of the present invention has less warpage, and less damage to the touch (feel when sitting on the foamed molded article) and rigidity of the molded article. [0002] In addition, the molded foam product of the present invention is suitable for use as a rigidity-imparting material for car seats. [0003] Moreover, this invention relates to the manufacturing method of a foam molding. Background technique [0004] There is known a foam molded product in which an insert made of metal or the like is integrally molded with a foam. Such molded foam products can be produced by a production method called so-called insert molding. [0005] Patent Document 1 discloses a molded foam product in which an annular metal member is integrally molded on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C27/14B29C44/00B29C44/12
CPCB29C44/00B29C44/12B29L2031/58B29L2031/771B60N2/7017A47C27/14B29C44/1228B29C44/128B29C44/1285B29C44/181B29C44/3411B29K2715/003B60N2/646
Inventor 藤原裕士
Owner KANEKA CORP