Continuous filament mat and method of making
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United States of America Patent
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Issued Date -
Jun 22, 2006
app pub date -
Dec 16, 2004
filing date -
Dec 16, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides an improved method of forming continuous filament mat (CFM) at greater through-put while maintaining or improving product quality by use of a synchronized draw process. The synchronized draw process provides CFM having improved weight variation, structure and tensile strength is capable of operating at increased mat line speed. CFM produced may have controlled mat density, MD density variation, CM density variation, MD tensile strength and CM tensile strength by controlling the period, frequency and interval of the deposited fiber strands. Using the synchronization technology of the present invention it is possible to control the tensile strength ratio (MD/CD) to meet a specific customer need by adjusting the LFR, frequency, period, and line speed. The method of the present invention provides for increasing the throughput of specialized and costly CFM manufacturing equipment without substantial expenditure.
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