Method for densifying a fibrous mat
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United States of America Patent
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Aug 14, 2018
Grant Date -
Apr 30, 2015
app pub date -
Jun 27, 2014
filing date -
Feb 8, 2011
priority date (Note) -
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Abstract
A method for densifying a fibrous mat, such as scrim, to achieve a uniform mat density, including a set of parallel bars each having a row of pins extending downward therefrom which can engage the mat fibers, a plurality of shafts along which the bars slide so as to maintain the bars parallel, a plurality of extendable accordion linkages connecting the set of bars, and a linear positioning assembly having a reciprocating drive mechanism coupled to one of the bars which can move the bars in response to an actuation signal. As the drive mechanism retracts the bar to which it is coupled the spacing between the rows of bars is decreased uniformly and the rows of pins draw the fibers together and compress them uniformly across the width of the mat.
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