Vehicle interior panel with airbag tear seam formed by mechanical piercing
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United States of America Patent
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Aug 23, 2016
Grant Date -
Oct 22, 2015
app pub date -
Nov 21, 2012
filing date -
Nov 21, 2012
priority date (Note) -
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Abstract
A vehicle interior panel (10) includes a decorative covering (16) with a non-visible tear seam that forms a deployment opening through the covering during airbag deployment. The tear seam is formed by mechanical piercing of a skin layer (20) of the covering using a piercing tool (30) having a compound chamfer (40). Such piercing tools allow the mechanical piercing process to produce non-visible and functional tear seams in polymeric materials and non-polymeric materials such as leather, including materials with relatively low elastic recovery characteristics. Tear seams formed in this manner can offer larger processing windows, lower manufacturing and equipment cost, and/or shorter cycle times when compared to other methods such as laser scoring.
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