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PA/PVA island-in-the-sea fiber with water-soluble sea phase and its production process

A sea-island fiber and water-soluble technology, applied in fiber processing, fiber chemical characteristics, filament/thread forming, etc., can solve problems such as composite fiber pollution, increase thermal decomposition temperature, enhance production continuity, and reduce manual labor intensity Effect

Active Publication Date: 2020-10-02
浙江泓泰德建新纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a method to solve the pollution problem caused by the preparation of composite fibers by organic solvent treatment of traditional PVA slices, to achieve the purpose of composite melt spinning with island phase resins, and to enhance Production continuity, PA / PVA sea-island fiber with water-soluble sea phase and its production process reducing labor intensity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In this embodiment, a PA / PVA sea-island fiber with a water-soluble sea phase is formed by PA as the island phase component and PVA as the sea-phase component. The sea-island fiber is obtained by stretching and heat setting, and the island of the nascent fiber The phase component accounts for 60% of the cross-sectional area of ​​the fiber, and the sea component accounts for 40% of the cross-sectional area of ​​the fiber. The fineness of the sea-island fiber is 1.6-14dtex, the breaking strength is 3-6cN / dtex, and the elongation at break is 7-10%. The single fiber fineness of the island component is below 0.8dtex, and the PVA is a water-soluble PVA masterbatch. The water-soluble PVA masterbatch is made of the following raw materials in parts by weight: 50 parts of polyvinyl alcohol; polyols or salt compounds 15 parts of modifiers; 3 parts of antioxidants; 3 parts of lubricants; 25 parts of deionized water; among them, the modifiers of polyols or salt compounds are alcohol a...

Embodiment 2

[0074] The same part of this embodiment and embodiment 1 will not be repeated, and its difference is:

[0075] In this embodiment, a PA / PVA sea-island fiber with a water-soluble sea phase is formed by PA as the island phase component and PVA as the sea-phase component. The sea-island fiber is obtained by stretching and heat setting, and the island of the nascent fiber The phase component accounts for 70% of the cross-sectional area of ​​the fiber, the sea component accounts for 30% of the cross-sectional area of ​​the fiber, the fineness of the sea-island fiber is 1.6-14dtex, the breaking strength is 3-6cN / dtex, and the elongation at break is 7-10%. The single fiber fineness of the island component is below 0.8dtex, and the PVA is a water-soluble PVA masterbatch, which is formed by fusing the following raw materials in parts by weight: 60 parts of polyvinyl alcohol; polyols or salt compounds 20 parts of modifier; 5 parts of antioxidant; 5 parts of lubricant; 30 parts of deioni...

Embodiment 3

[0091] The same part of this embodiment and embodiment 1, 2 will not be repeated, and its difference is:

[0092] In this embodiment, a PA / PVA sea-island fiber with a water-soluble sea phase is formed by PA as the island phase component and PVA as the sea-phase component. The sea-island fiber is obtained by stretching and heat setting, and the island of the nascent fiber The phase component accounts for 85% of the cross-sectional area of ​​the fiber, the sea component accounts for 15% of the cross-sectional area of ​​the fiber, the fineness of the sea-island fiber is 1.6-14dtex, the breaking strength is 3-6cN / dtex, and the elongation at break is 7-10%. The single fiber fineness of the island component is below 0.8dtex, and the PVA is a water-soluble PVA masterbatch. The water-soluble PVA masterbatch is made of the following raw materials in the proportion by weight: 50-70 parts of polyvinyl alcohol; polyols or salts 25 parts of compound modifier; 7 parts of antioxidant; 7 part...

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Abstract

The invention discloses PA / PVA (polyamide / polyvinyl alcohol) sea-island fiber with a water-soluble sea phase; PA serves as an island phase component; as-spun fiber formed by using PA as an island phase component and PVA as a sea phase component are drawn and heat-set to form sea-island fiber; the island phase component in the as-spun fiber accounts for 60-85% of fiber sectional area, the sea phasecomponent accounts for 40-15% of fiber sectional area, the sea-island fiber has fineness of 1.6-14 dtex, and breaking strength of 3-6 cN / dtex; water-soluble PVA masterbatch is made by melting, by weight, 50-70% of polyvinyl alcohol, 15-25% of polyol or salt type compound modifiers, 3-7 parts of an antioxidant, 3-7 parts of a lubricant, and 25-35% of deionized water. The invention also provides aproduction technique of the sea-island fiber. Compared with traditional PVA, the PA / PVA sea-island fiber has the advantages that as the melting point is lower, it is ensured that the PVA sea componentand high-melting-point PA are suitable for melt composite spinning, and no PVA dissolution problem occurs at the premise of reaching a melting point; the problem is solved that traditional PVA decomposes and is unsuitable for melt composite spinning when encountering high temperature PA.

Description

technical field [0001] The invention relates to the technical field of superfine fibers, in particular to a PA / PVA sea-island fiber with a water-soluble sea phase and a production process thereof. Background technique [0002] Microfiber has attracted people's attention for its high coverage, soft touch, comfortable wearing, soft luster, and good adsorption properties. It is widely used in clothing, artificial leather, building materials, adsorption and filter materials, and other fields. Sea-island fiber is the abbreviation of sea-island composite fiber. It adopts composite spinning technology to use two fiber-forming polymers as "island" and "sea" components, and melt-spins them according to different ratios. The different solubility of the components to a certain chemical solvent, the "sea" component is dissolved and the "island" component is left, that is, the composite ultrafine fiber. According to the type of marine polymer and post-processing technology, sea-island f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/12D01F8/10D01F1/10D01F11/04D01F6/60D01F6/80D01D5/30D01D1/04D01D5/08D01D5/12
CPCD01D1/04D01D5/08D01D5/12D01D5/30D01F1/10D01F6/60D01F6/80D01F8/10D01F8/12D01F11/04
Inventor 尹德河马建伟陈建民
Owner 浙江泓泰德建新纤维有限公司
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