Reinforcing fibre material for bituminous aggregates, method for producing same and use
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United States of America Patent
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Mar 15, 2005
Grant Date -
N/A
app pub date -
Jun 14, 2002
filing date -
Apr 14, 1999
priority date (Note) -
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Abstract
A fibrous reinforcing material (1) is envisaged which is produced from glass filaments (2), advantageously consisting of fragments of glass yarns (3) or of chopped yarns, having a mean diameter of greater than five micrometers and a mean length of greater than six millimeters. The process comprises a selection step (4a, 4b) during which the glass yarns (3) consisting of filaments having a diameter greater than or equal to five micrometers and less than or equal to twenty-four micrometers are chosen, optionally a step (5) of mixing the selected yarns, and a milling step (6) during which the mixed yarns are chopped into filaments (2) having a length of greater than or equal to six millimeters. Advantageously, the fibrous material is in the form of flakes.
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