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Abnormal-shape filament non-woven fabric and manufacture technology thereof

A non-woven, special-shaped fiber technology, used in textiles and papermaking, fiber processing, non-woven fabrics, etc., can solve problems such as increasing transportation and personnel costs, harming baby's delicate skin, affecting softness and fluffy, etc. The effect of saving technical transformation costs, saving labor and product costs, and reducing transportation links

Inactive Publication Date: 2012-07-11
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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  • Abnormal-shape filament non-woven fabric and manufacture technology thereof
  • Abnormal-shape filament non-woven fabric and manufacture technology thereof
  • Abnormal-shape filament non-woven fabric and manufacture technology thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Example 1 adopts PE and PET raw materials, is extruded by a twin-screw extruder, and forms a skin-core structure through a spinneret. 2.5 special-shaped long fiber, after laying the net, it is formed by hot air in an oven, and finally cut and wound 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.

[0034] Fiber specific surface area

[0035] The specific surface of the fiber is equal to the total surface area of ​​the fiber per unit mass.

[0036] For fibers with a circular cross-section,

[0037]

[0038] where, ρ = fiber density

[0039] Dpf(d / f) = denier of a single fiber

[0040] L=length, 9×10 5 cm

[0041]For special-shaped fibers, the specific surface area is equal to the specific surface area of ​​the same material and the same denier circular cross-section fiber × shape coefficient α, and the shape coefficient α refers to the cross-sectional circumference of the s...

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

The invention provides an abnormal-shape filament non-woven fabric, wherein non-woven fabric coiled material consists of abnormal-shape fiber filaments, the length of each abnormal-shape fiber filament is more than or equal to 1000mm, the specific surface area of the abnormal-shape filament is more than 1.3 compared with that of the fiber with the same material, the equal denier and the circular cross section, the abnormal-shape fiber filaments consist of low-melting point thermoplastic high polymers and high-melting point thermoplastic high polymers, the low-melting point thermoplastic high polymers of which the melting point is less than 150 DEG C are arranged on the surface layers of the abnormal-shape fiber filaments, the abnormal-shape fiber filaments are glued with one another by the low-melting point thermoplastic high polymers arranged on the surface layers of the abnormal-shape fibers to form into the non-woven fabric coiled material, each gluing point among each abnormal-shape fiber is the surface layers of the low-melting point thermoplastic high polymers of two abnormal-shape fiber filaments contacted with each other, and the mean value of the area of each gluing point is less than 0.01 square millimeters. The non-woven fabric is fluffy and flexible, thereby being elastic; the transportation link is reduced, and the manufacture cost is reduced; and the non-woven fabric is quick in liquid absorption and good in flow guide effect.

Description

technical field [0001] The invention relates to a non-woven fabric used for the surface layer and the flow-guiding layer of absorbent products, in particular to a special-shaped 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 textile industry today. The fastest growing emerging field in the industry. [0003] At present, the cross-section of fibers used in non-woven fabrics is usually circular, and it can also be special-shaped fibers such as herringbone and multi-lobal cross-sections. The special-shaped fiber was first introduced by the DuPont Company of the United States in the early 1950s with a triangular cross-section, and then, Germany developed a pentagonal c...

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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IPC IPC(8): D04H3/153D04H3/005D01D5/253
Inventor 谢继华谢继权
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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