Weather strip
AssigneeNishikawa Rubber Co., Ltd.
InventorsKoichi TERASAKI, Yuichi NUIBE
Life of this patent
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Abstract
Provided is a weather strip having both a low specific gravity and a low water absorption rate. The weather strip to be attached to an automobile includes a hollow sealing part having a hollow space formed therein, and the hollow sealing part includes a foamed wall part that is at least part of a wall forming the hollow space, that has bubbles formed therein, the number of the bubbles being not less than 200/mm2, at least some of the bubbles each being derived from a thermally expandable microcapsule, that has a thickness of not less than 1.0 mm and not more than 2.0 mm, and that has a specific gravity of not more than 0.45.
Claims2
A weather strip to be attached to an automobile, the weather strip comprising a hollow sealing part having a hollow space formed therein, wherein
- the hollow sealing part includes a foamed wall part that is at least part of a wall forming the hollow space, and
- the foamed wall part
- has bubbles formed therein, the number of the bubbles being not less than 200/mm2 in a given cross section, at least some of the bubbles each being derived from a thermally expandable microcapsule,
- has a thickness of not less than 1.0 mm and not more than 2.0 mm, and
- has a specific gravity of not more than 0.45.
Dependencies are inferred from the claim text.