Highly Crimped Conjugated Fiber Cheese Package and Process for Its Production
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United States of America Patent
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Issued Date -
Dec 25, 2008
app pub date -
Oct 19, 2006
filing date -
Oct 20, 2005
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Abstract
A highly crimped conjugate fiber cheese package which is obtained by layering on a paper bobbin a conjugate fiber consisting of a plurality of single filament composed of polytrimethylene terephthalate components having different intrinsic viscosities and consisting of at least 90 mol % of a trimethylene terephthalate unit and no more than 10 mol % of another ester repeating unit and laminated to each other in a side-by-side type, the cheese package being characterized by satisfying the following conditions (1)-(4). (1) The single filament composing the conjugate fiber has cross-sectional shape which is flat cross-section with a flatness of 1.1-3 as the ratio between the long axis and short axis. (2) The developed crimp elongation of the conjugate fiber is 30-200%. (3) The relationship between the contact area (compressed net area) S (cm.sup.2) between the paper bobbin and conjugate fiber and the wound weight W (kg) satisfies the following formula (1): 2.ltoreq.W.ltoreq.0.02S (Formula 1) where 240.ltoreq.S.ltoreq.1000 (4) The package density of the conjugate fiber cheese package is 0.92-1.05 g/cm.sup.3.
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