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US 4,539,242 AGranted
Pile fabric with non-mushroom shaped cut ends
AssigneeTeijin Limited
InventorsYoshiyuki Sasaki, Shigenobu Kobayashi, Tetsuo Okamoto, Norihiro Minemura
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AssigneeTeijin Limited
InventorsYoshiyuki Sasaki, Shigenobu Kobayashi, Tetsuo Okamoto, Norihiro Minemura
Estimating the term…
A cut pile fabric such as a velvet composed of a synthetic fiber pile having deep color shade and smooth touch on its pile surface, the piles thereof having non-mushroom shaped cut ends at their tip portions, defined by the equation d.sub.1 /d.sub.2 .ltoreq.1.3, where d.sub.1 is the maximum diameter of the tip portion and d.sub.2 is a diameter of the remaining portion of the piles. The pile fabric is obtained by utilizing, as a pile yarn, a synthetic yarn having a breakage strength of less than 2.8 g/De, a primary yielding strength of more than 1.2 g/De, a breakage elongation of less than 50%, and a primary yielding elongation of less than 10%. Such synthetic yarn can advantageously be prepared by a crystallization drawing process.
A pile fabric comprising a plurality of piles of thermoplastic synthetic fiber having a breakage strength of less than 2.8 g/De, a primary yield strength of more than 1.2 g/De, a primary yield elongation of at least 10%, and a boiling water contraction of less than 3.0% or a hot air contraction at 160.degree. C. of less than 5.0%, at least 50% of the piles being cut piles having cut ends at tip portions thereof, characterized in that an average value of a maximum diameter d.sub.1 of said tip portions of said cut piles satisfies the equation
Dependencies are inferred from the claim text.