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A layered elastomer, its manufacturing method and special spinneret

An elastomer, polyester elastomer technology, applied in spinneret assemblies, non-woven fabrics, textiles and papermaking, etc., can solve the problem of not being able to significantly improve the support factor, achieve high resilience, improve support factor, and optimize The effect of the soft effect

Active Publication Date: 2020-11-20
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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  • A layered elastomer, its manufacturing method and special spinneret
  • A layered elastomer, its manufacturing method and special spinneret
  • A layered elastomer, its manufacturing method and special spinneret

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Feed 40% by mass of the low-hardness polyester elastomer B-1 raw material into the first component extruder, and heat to a molten state at 220°C, 60% by mass of the 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 respectively extruded into the die and distributed through the partitions of the distribution plate. A-2 raw materials and B-1 raw materials are located on the spinneret. The traction rate is 0.4 m / min on both sides of the fiber. When the filamentous fiber descends and falls into 30℃ cold water for cooling and crimping, the adjacent high-hardness and low-hardness fiber yarns on both sides of the separator are interlaced and bonded to each other. The layered elastomer is formed in the mold, and the layered elastomer is tested by the above method. The physical parameters obtained are shown in Table 2. The density of the layered elastomer is 60Kg / cm 3 , The thick...

Embodiment 2

[0044] Feed 40% by mass of the low-hardness polyester elastomer B-2 raw material into the first component extruder, and heat to a molten state at 220°C, 60% by mass of the high-hardness polyester elastomer A-1 The raw materials are heated to 240°C in the second component extruder and melted; after metering, they are respectively extruded into the die and distributed through the partitions of the distribution plate. A-1 and B-2 materials are located on the spinneret. The traction rate is 0.4 m / min on both sides of the fiber. When the filamentous fiber descends and falls into 30℃ cold water for cooling and crimping, the adjacent high-hardness and low-hardness fiber yarns on both sides of the separator are interlaced and bonded to each other. The layered elastomer is formed in the mold, and the layered elastomer is tested by the above method. The physical parameters obtained are shown in Table 2. The density of the layered elastomer is 60Kg / cm 3 , The thickness is 50mmm, the surfac...

Embodiment 3

[0046] Feed 40% by mass of the low-hardness polyester elastomer B-2 raw material into the first component extruder, and heat to a molten state at 220°C, 60% by mass of the high-hardness polyester elastomer A-2 The raw materials are heated to 230℃ in the second component extruder to melt; after being measured, they are respectively extruded into the die and distributed through the partitions of the distribution plate. The raw materials A-2 and B-2 are respectively located on the spinneret The traction rate is 0.4 m / min on both sides of the fiber. When the filamentous fiber descends and falls into 30℃ cold water for cooling and crimping, the adjacent high-hardness and low-hardness fiber yarns on both sides of the separator are interlaced and bonded to each other. The layered elastomer is formed in the mold, and the layered elastomer is tested by the above method. The physical parameters obtained are shown in Table 2. The density of the layered elastomer is 60Kg / cm 3 , The thicknes...

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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 filaments. The long filaments are made of thermoplastic polyester elastomer as raw materials. The elastomer can be suitable for office chairs, sofas, beds and other fields, especially A layered elastomer, its manufacturing method and a 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 for judging the elasticity and comfort of materials, that is, the product is compressed to strain The ratio of the pressure value at 65% divided by the pressure value when the product is compressed to 25% strain. Generally speaking, the higher the support factor, the better the comfort of the product. The product with the higher support factor has a better experience in the initial compression when the user just sits on it. Soft, the post-compression exp...

Claims

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Application Information

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