Staple fiber cutter
AssigneeCelanese Corporation
InventorCarol L. Becker
Life of this patent
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Abstract
An improved apparatus is disclosed for cutting a tow of continuous filamentary material into staple fiber of mixed cut length, with some lengths being below 3/4 inch and some lengths above 3/4 inch. The improved cutter comprises asymmetric means for supporting at least the blades which cut the shortest filaments. It is preferred that the blade disposition within a quadrant of the cutting be similar to the blade disposition in the opposed quadrant. The apparatus facilitates cutting without blockage and/or blade breakage.
Claims5
Improved apparatus for cutting a tow of continous filamentary material, into staple fiber of mixed cut length, the staple fiber comprising first filaments having lengths less than three quarters of an inch and second filaments having lengths greater than three quarters of an inch, the apparatus including (i) a plurality of blades (ii) means for supporting and spacing the blades;
- (iii) means for continously passing the tow over the edges of the spaced blades;
- and (iv) means for applying pressure on the tow to force the tow against the edges of the blades whereby the tow is cut into staple fiber and simultaneously forced through the means for supporting and spacing the blades, wherein the improvement comprises at least one pair of asymetric means for supporting a pair of blades, each of said asymetric support means comprising a slot for receiving and supporting a blade, each of said asymetric support means being asymetrical about said slot.
Dependencies are inferred from the claim text.