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Gas washer

A gasket and an inflatable bag technology, applied in the field of inflatable gaskets, can solve the problems of increasing the cost and time of gasket manufacturing.

Inactive Publication Date: 2018-09-14
UNIQUE FABTING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Said additional manufacturing steps may increase the cost and time of manufacturing gaskets with at least one hollow section

Method used

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Embodiment Construction

[0014] The present invention involves unexpected phenomena. It is understood that if the inflatable bladder is to be formed between two foam sheets during the heat-intensive process used to provide the initial shape to the bladder, then subsequent cooling will cause one foam sheet to collapse onto the other. It is expected that this collapse will substantially destroy the originally formed shape of the inflatable bladder. This expectation is based at least in part on the Ideal Gas Law, the porous / porous nature of the foam material, the absence of additional structural material in or around the foam sheet to maintain the originally formed shape, and / or on the outer surface of the foam sheet And / or there is no additional layer of gas impermeable material at the seams between the sheets.

[0015] However, it was unexpectedly discovered that the double-sheet foam is slabed together to form an inflatable bladder in the gasket, creating an inflatable bladder in the two-layer foam gask...

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Abstract

A foam twin-sheet formed air filled gasket is provided. The foam sheets need not be covered with one or more layers of air impermeable materials before, during or after the twin-sheet forming process. Methods for manufacturing the air filled gaskets are also disclosed.

Description

Technical field [0001] The present invention relates to an inflatable gasket formed by double sheets, and a method of manufacturing the same. Background technique [0002] In many applications, gaskets are used to form mechanical seals. In automotive applications, many gaskets are formed from one or more foam sheets. The foam gasket can be bent into various irregularly shaped gaps and / or recesses and cracks in the gaps in any of a variety of automotive structures. [0003] Historically, foam gaskets in automotive applications have been solid rather than hollow. As used herein, "solid" includes a sheet of foam material, even if air is trapped in the cell structure. For example, a sheet of foamed polyurethane is "solid." "Solid" foam sheets include sheets having a constant or substantially constant density, varying density, or a combination thereof. The air in the cells of the foam material is beyond the scope of the definition of "encapsulated air" or "inflatable bladder" as us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/46
CPCB29C51/006B29C49/04B29C49/22B29C51/105B29C65/02B29C66/242B29C66/71B29C66/727B29K2023/04B29K2023/0691B29K2023/10B29K2105/04B29L2031/265B32B5/18B32B27/065B32B27/08B32B27/32F16J15/027F16J15/46
Inventor 丹尼尔·比安基布拉德利·J·黑曾
Owner UNIQUE FABTING INC