TH92073A - Split long fiber non-woven fabric, which has good dust-free properties and production method. - Google Patents

Abstract

DC60 This invention is about a method for producing segmented nonwoven fabrics, characterized by spinning long fibers blended yarn that is sprayed out of the spinning metal mouth with a spinning nozzle to blend the polyester part. (A) with the polyolefin part (B) of the polyester (A) and the polyolefin (B) with the melting point difference. In the scope of less than 30 degrees Celsius contact Reduce the temperature of the long fiber blends that are spinning out with the Flow reduces the temperature It increases the tensile force with that fluid or another and makes the long fibers even smaller, overlaid on the belt as a non-woven fabric. And dividing long fibers mixed in non-woven fabrics using a liquid liquid The high pressure into the polyester section (A) with the polyolefin section (B) with the segmented non-woven fabric. Obtained from the said production method And use it From this invention Able to offer a method for the production of flexible segmented nonwoven fabrics. With good dust-free properties This invention deals with a method for producing segmented non-woven fabrics, whose characteristics are spinning long fibers, blended threads that are sprayed out of a metal mouth, spinning with a blending nozzle to the polyester part ( A) with the polyolefin part (B) of the polyester (A) and the polyolefin (B) with the melting point difference. In the scope of less than 30 degrees Celsius contact Reduce the temperature of the long fiber blends that are spinning out with the Flow reduces the temperature It increases the tensile force with that fluid or another and makes the long fibers even smaller, overlaid on the belt as a non-woven fabric. And dividing long fibers mixed in non-woven fabrics using a liquid liquid The high pressure into the polyester section (A) with the polyolefin section (B) with the segmented non-woven fabric. Obtained from the said production method And use it From this invention Able to offer a method for the production of flexible segmented nonwoven fabrics. With good dust-free properties

Claims (10)

1. The specific method for producing segmented non-woven fabrics involves spinning long blended fibers from a metal spinning machine with a spinning nozzle. Polyester (A), derived from polylact polymer, and polyolefin (B), derived from propylene &-olefin randum copolymer, with a melting point difference of less than 30°C, are brought into contact with each other. The resulting blended long fibers are then cooled using a cooling fluid while the fibers are reduced in size by increasing their tension with the same or another fluid. The fibers are then stacked on a fiber storage conveyor belt, and a high-pressure fluid is used to segment the blended long fibers into the polyester (A) and polyolefin (B) segments. 2. A method for producing a segmented nonwoven fabric of claim 1, in which polyester (A) has a higher melting point than polyolefin (B). 3. Method for the manufacture of nonwoven fabrics of the fractional fiber type of Patent 1. or 2., where polyester (A) is a polylactic acid polymer. 4. A method for the fabrication of one of the following fractional nonwoven fabrics under claims 1 through 3, in which polyolefin (B) is a propylene•(formula)-olefin randum copolymer. 5. Non-woven fabrics with segmented fibers obtained by any of the manufacturing methods described in claims 1 through 4. 6. Non-woven fabric of segmented fibers of claim 5, which is characterized as polyester (A) made from directional crystals. 7. Segmented non-woven fabric with specific characteristics: The number of dust particles no larger than 25(formula)m, measured using 10 sheets of 25mm*25mm non-woven fabric, not exceeding 5000 pieces/ft3 according to JIS-B-9923 standard (Thumbling method). 8. Non-woven fabric with segmented fibers as per claim 6 or 7, which is characterized by segmented fiber size within the range of 0.001 to 2.0 denier. 9. A non-woven fabric cloth containing a segmented fiber structure in accordance with any of the claims 5 through 8. 10. Materials for cleanrooms containing non-woven fabrics of a segmented type, as per claims 5 through 8.