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Filament nonwoven fabric and production process thereof

A non-woven, long-fiber technology, used in textiles, papermaking, non-woven fabrics, etc., can solve the problems of large hot-rolled point area, damage to the baby's delicate skin, affect softness and fluffy, and save labor. Effect

Inactive Publication Date: 2012-07-18
XIAMEN YANJAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: short fibers are purchased from other fiber manufacturers, which increases transportation and personnel costs, and because the fibers are relatively short, there will be a large number of raised fiber heads in the air-through non-woven fabric. If it is used in baby diapers, it will hurt the baby's delicate skin, so the application of traditional air-through nonwovens has limitations
The disadvantage is: the area of ​​the hot rolling point is large, which affects the softness and bulkiness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Filament nonwoven fabric and production process thereof
  • Filament nonwoven fabric and production process thereof
  • Filament nonwoven fabric and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] Example 1 Use PE and PET raw materials, extrude through a twin-screw extruder, pass through a spinneret to form long fibers with a sheath-core structure, after laying a net, pass through an oven for hot air molding, and finally cut and wind online to form a coil. The temperature of the hot air box is 138°C, and the weight of the product is 24g / m 2 Long fiber non-woven fabric.

example 2

[0032] Example 2 Use PE and PP raw materials, extrude them through an extruder, pass through a spinneret to form fibers with a parallel structure, after laying a net, pass through an oven for hot air forming, and finally cut and wind online to form a coil. The temperature of the hot air box is 135°C, and the weight of the product is 27g / m 2 Long fiber non-woven fabric.

example 3

[0033] Example 3 Low-melting point PET and PET raw materials were used, extruded through an extruder, passed through a spinneret to form fibers, after laying a net, passed through an oven for hot air forming, and finally cut and wound online to form a coil. The temperature of the hot air box is 125°C, and the weight of the product is 20g / m 2 Long fiber non-woven fabric.

[0034] In summary, since the non-woven fabric processed by the hot air process of the fiber filament in the present invention is fluffy, soft and elastic, and there is no raised fiber head, when touching the filament in the length direction, the surface is smooth and feels like silk; At the same time, due to the existence of fiber filaments, the non-woven fabric has a certain breaking strength, especially the longitudinal strength, which can withstand the tensile force during the machining of sanitary napkins, so as to ensure its smooth processing. Therefore, the long-fiber air-through nonwoven fabric produc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

Disclosed are a filament nonwoven fabric and a production process thereof. A nonwoven fabric coil is composed of filament fibers, the length of each filament fiber is equal to or larger than 1000mm, each filament fiber is made of low-melting-point thermoplastic polymer and high-melting-point thermoplastic polymer, the low-melting-point thermoplastic polymer with a melting point smaller than 150 DEG C is positioned on the surface of each filament fiber, the filament fibers are adhered together to form the nonwoven fabric coil by melting the low-melting-point thermoplastic polymer on the surfaces of the fibers, each adhesion point of the fibers is formed by low-melting-point thermoplastic polymer surfaces of two filament fibers, and average area of each adhesion point is smaller than 0.005 square millimeter. Therefore, the nonwoven fabric is bulky, soft and elastic, and has no warping fiber ends. The filaments are formed by one-step forming, the fabric is formed by hot air process, and compared with traditional procedures of fiber chopping, unpacking, chopped fiber carding and laying, a transport procedure is eliminated and production cost is lowered.

Description

technical field [0001] The invention relates to the production of a non-woven fabric used for the surface layer of absorbent products, in particular to a long-fiber non-woven fabric and its manufacturing process. Background technique [0002] Non-woven fabrics, also known as non-woven fabrics, have been industrialized in the United States since 1942. Due to their simple production process, large output, low cost, and wide range of product applications, compared with traditional woven fabrics, they have become a major part of the textile industry. The fastest growing emerging field in the industry. According to different processing methods, non-woven fabrics can be divided into: spunbond non-woven fabrics, spunlace non-woven fabrics, hot-air non-woven fabrics, hot-rolled non-woven fabrics, etc. At present, the non-woven fabrics widely used in the surface layer of absorbent products such as sanitary napkins and paper diapers are mainly air-through non-woven fabrics and spunbo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/005D04H3/16
Inventor 谢继华谢继权
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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