Method for connecting reinforcing fiber bundles, method for producing long fiber reinforced thermoplastic resin pellet, and wound body
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United States of America Patent
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Dec 20, 2016
Grant Date -
Jun 14, 2012
app pub date -
Nov 5, 2010
filing date -
Nov 6, 2009
priority date (Note) -
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Abstract
A method for connecting a tail end portion of a reinforcing fiber bundle of a preceding wound body to a front end portion of a reinforcing fiber bundle unwound from a new wound body by blowing pressurized air to both of the ends to unravel and entwine both of the reinforcing fiber bundles, wherein the method includes a preparation step for adjusting the amount of a sizing agent contained in the front end of the reinforcing fiber bundle unwound from the new wound body and the tail end of the preceding wound body to 4 wt % or less, and the reinforcing fiber bundles are connected after the preparation step.
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