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Layered elastomer, manufacturing method thereof and special spinneret

An elastomer and spinneret technology, which is used in spinneret assemblies, non-woven fabrics, textiles and papermaking, etc., can solve the problem of not being able to significantly improve the support factor, and achieve high resilience, good comfort, and optimal softness. effect of effect

Active Publication Date: 2019-06-14
WUXI KEYI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The applicant aims at the disadvantage that the products made of polyester elastomer with single hardness cannot significantly improve the support factor in the above-mentioned existing production, and provides a layered elastomer with reasonable structure, its manufacturing method and special spinneret, Two kinds of polyester elastomer fibers with different hardness are used to make layers with different hardness on the front and back. The middle part in the thickness direction is an interlaced layer with high and low hardness fiber filaments interspersed and bonded to each other, which can significantly improve the support factor and pressure change durability of the product. Resilience, resilience, long service life

Method used

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  • Layered elastomer, manufacturing method thereof and special spinneret
  • Layered elastomer, manufacturing method thereof and special spinneret
  • Layered elastomer, manufacturing method thereof and special spinneret

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The raw material of low hardness polyester elastomer B-1 accounting for 40% by mass of the total amount is fed into the first component extruder, heated to a molten state of 220°C, and 60% by mass of high hardness polyester elastomer A-2 Raw materials are heated to a molten state of 230°C in the second component extruder; after metering, they are extruded into the die head and distributed through the partition of the distribution plate. Raw materials A-2 and B-1 are respectively located in the spinneret On both sides of the partition, the pulling speed is 0.4 m / min. During the process of the filamentous fibers falling and falling into 30°C cold water cooling and curling, the adjacent high-hardness fiber filaments and low-hardness fiber filaments on both sides of the separator are interlaced and bonded to each other, and finally in the The layered elastomer is formed in the mold, and the layered elastomer is tested by the above method, and the physical parameters obtained...

Embodiment 2

[0044] Feed the raw material of low hardness polyester elastomer B-2 accounting for 40% by mass of the total amount into the first component extruder and heat it to a molten state of 220°C, and 60% by mass of high hardness polyester elastomer A-1 The raw materials are heated to a molten state of 240°C in the second component extruder; after metering, they are extruded into the die head and distributed through the partition of the distribution plate. The raw materials A-1 and B-2 are respectively located in the spinneret On both sides of the partition, the pulling speed is 0.4 m / min. During the process of the filamentous fibers falling and falling into 30°C cold water cooling and curling, the adjacent high-hardness fiber filaments and low-hardness fiber filaments on both sides of the separator are interlaced and bonded to each other, and finally in the The layered elastomer is formed in the mold, and the layered elastomer is tested by the above method, and the physical parameter...

Embodiment 3

[0046] Feed the low-hardness polyester elastomer B-2 raw material accounting for 40% by mass of the total amount into the first component extruder, heat it to a molten state at 220°C, and 60% by mass of high-hardness polyester elastomer A-2 The raw materials are heated to a molten state of 230°C in the second component extruder; after metering, they are extruded into the die head and distributed through the partition of the distribution plate. The A-2 raw material and B-2 raw material are located in the spinneret On both sides of the partition, the pulling speed is 0.4 m / min. During the process of the filamentous fibers falling and falling into 30°C cold water cooling and curling, the adjacent high-hardness fiber filaments and low-hardness fiber filaments on both sides of the separator are interlaced and bonded to each other, and finally in the The layered elastomer is formed in the mold, and the layered elastomer is tested by the above method, and the physical parameters obtai...

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Abstract

The invention discloses a layered elastomer. A thermoplastic polyester elastomer is used as a raw material to extrude a long fiber yarn, the layered elastomer with a certain thickness after being crimped and bonded is formed, the front and back surfaces of the layered elastomer are respectively high-hardness and low-hardness fiber layers, the middle in the thickness direction is a staggered layerin which different-hardness fibers are interpenetrated and bonded, and a supporting factor testing with a low-hardness surface is 4.0 or more. Compared with high-hardness polyester elastomer fibers, low-hardness polyester elastomer fibers have higher resilience, flexibility and durability, parts with insufficient indentation hardness rely on the high-hardness polyester elastomer as a support layerto improve the overall hardness of the whole product, in the case of the low-hardness fiber layer facing upward, the low-hardness fiber layer in the initial stage of compression can give a user a softer contact experience, after a user sits stably in compression later state, the staggered layer can give a customer a soft and moderate experience, the high-hardness fiber layer can give the user a harder and more supportive experience, and the user experience is comfortable.

Description

technical field [0001] The invention relates to an elastic body with a certain thickness formed by crimping long fiber filaments. The long fiber filaments are made of thermoplastic polyester elastomer. The elastic body can be suitable for office chairs, sofas, beds and other fields, especially relates to A layered elastic body, its manufacturing method and special spinneret. Background technique [0002] Existing cushions, sofa cushions, mattresses, etc. are often made of foamed polyurethane, latex, or springs. Support factor is a standard used to judge the elasticity and comfort of materials, that is, the product is compressed to the strain The ratio of the pressure value at 65% divided by the pressure value when the product is compressed to 25% of the strain, generally speaking, the higher the support factor, the better the product comfort, and the product with a high support factor will feel better at the initial stage of compression when the user just sits on it. Soft, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/011D04H3/033D04H3/16D01D4/02D01D4/06
Inventor 陈浩
Owner WUXI KEYI NEW MATERIAL CO LTD
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