Breakable and degradalbe non-woven spunlace and fabrication methods and production line

Abstract

The invention relates to a swiftly breakable and totally degradable non-woven spunlace and its fabrication methods and production line. It is composed of 35-50% zigzagging flat viscose and 65-50% wood pulp. It enjoys the following strengths: excellent breaking performance; total degradation of non-woven fiber upon breaking and avoidance of second environmental protection; great play of material features due to pre-treatment of raw materials and good strength of non-woven cloth under the dry and humid status.

1 . It A breakable and degradable, non-woven spunlace comprising, wherein said structure is composed of 35-50% zigzagging flat viscose ( 9 ) and 65-50% wood pulp. 
     
     
         2 . The non-woven spunlace of  claim 1 , characterized in that: the said zigzagging flat viscose fiber ( 9 ) is thrown and cut deformed viscose fiber ( 10 ). 
     
     
         3 . The non-woven spunlace of  claim 2 , characterized in that: the said deformed viscose fiber ( 10 ) is 5-20 mm in length. 
     
     
         4 . The non-woven spunlace of  claim 1  characterized in that: 35-50% zigzagging flat viscose fiber with a length of >10 mm and ≦20 mm takes up 70-80%; 35-50% zigzagging flat viscose fiber with a length of ≧5 mm and ≦10 mm takes up 20-30%. 
     
     
         5 . The non-woven spunlace of  1 , characterized in that: wood pulp fiber is 1-5mm in length. 
     
     
         6 . The non-woven spunlace of  claim 1  characterized in that: wood pulp fiber with a length of ≧1 mm and ≦3 mm takes up 20-30%; wood pulp fiber with a length of >3 mm and ≦5 mm takes up 80-70%. 
     
     
         7 . The non-woven spunlace of  1 , characterized in that: technical index of the said breakable and degradable non-woven spunlace is specified as follows:
 Water breakability—It receives sealed pipe swing test for 50 times and is thus broken into total fiber;   Gram weight: 30-100 gsm   Humidity strength (MD): above 400 g/in.; CD: above 200 g/in.   
     
     
         8 . A fabrication methods of breakable and degradable non-woven spunlace, characterized in that:
 (1) 5-20 mm of 35-50% zigzagging flat viscose fiber is laid horizontally at the feed mouth of a cutting machine and fed into the cutting machine ( 1 ) by conveyor ( 8 ); numerous incisions are formed on the surface or at the side of fiber by the high-speed shearing effect of flail knife and deformed viscose is obtained;   (2) The deformed viscose fiber and wood pulp are conveyed to the cotton condenser ( 2 ) from the feed month. The cotton condenser ( 2 ) extracts the air produced in the transportation of raw materials; rotational cotton condenser ( 2 ) freely falls raw materials to the mixer ( 3 );   (3) The mixer ( 3 ) is composed of three groups of materials evening rollers; the materials are isolated in the middle and evened in three sections; the materials freely fallen into the mixer form a mixture of viscose fiber and wood pulp under the effect of mixer, water is filled into the water inlet in the upper end of mixer so that materials in the mixer form adequately even work pulp;   (4) The adequately even work pulp flows into the formation month and receive the common effect of negative pressure by non-woven cloth forming support network ( 4 ) and suction box ( 7 ). Water is pumped away; raw fiber is reserved in the support network so that formed fabric sheet structure is produced;   (5) The fabric is mobilized by a support network and input into a microneedle spunlace area; the fibers are mutually entangled by the microneedle spunlace head and water needle and sheet non-wove cloth is formed continuously.   
     
     
         9 . The said fabrication methods of breakable and degradable non-woven spunlace according to  claim 8 , characterized in that: clamping network is collocated outside the microneedle spunlace head and in a clamping structure to the fleece between the support networks, whereby under the effect of microneedle spunlace, the fleece does not suffer from serious displacement, evenness of fleece is guaranteed and fiber losses are reduced. 
     
     
         10 . A production line of breakable and degradable non-woven spunlace, characterized in that: the terminal of conveyor ( 8 ) is directly faced with the feed inlet of cutting machine ( 1 ); the discharge outlet of cutting machine ( 1 ) is directly faced with the feed inlet of cotton condenser ( 2 ); the discharge outlet of cotton condenser ( 2 ) is directly faced with the inlet of mixer ( 3 ); the outlet of mixer ( 3 ) is directly faced with the forming support network ( 4 ) of non-woven cloth; numerous microneedle spunlace heads ( 5 ) in the forming support network ( 4 ) of non-woven cloth are collocated with clamping network ( 6 ) between the forming support network ( 4 ) of non-woven cloth; the clamping network ( 6 ) is sleeved in numerous microneedle spunlace heads ( 5 ). Numerous dehydration boxes ( 7 ) are distributed under the forming support network ( 4 ) of non-woven cloth. 
     
     
         11 . the The said production line of breakable and degradable non-woven spunlace according to  claim 10 , characterized in that: three groups of materials evening rollers of the mixer ( 3 ) are distributed in equal angle; the mixing teeth are collocated in the materials roller. 
     
     
         12 . the The said production line of breakable and degradable non-woven spunlace according to  claim 10 , characterized in that: four corners of the clamping network ( 6 ) constitute a parallel rectangle structure by the support of guide shaft. 
     
     
         13 . The said production line of breakable and degradable non-woven spunlace according to  claim 10 , characterized in that: the water outlet aperture of microneedle spunlace head ( 5 ) is 0.08 mm. 
     
     
         14 . The non-woven spunlace of  claim 3 , characterized in that: 35-50% zigzagging flat viscose fiber with a length of >10 mm and ≦20 mm takes up 70-80%; 35-50% zigzagging flat viscose fiber with a length of ≧5 mm and ≦10 mm takes up 20-30%. 
     
     
         15 . The non-woven spunlace of  claim 5 , characterized in that wood pulp fiber with a length of ≧1 mm and ≦3 mm takes up 20-30%; wood pulp fiber with a length of >3 mm and ≦5 mm takes up 80-70%.