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Sheath-core composite monofilament and preparing method and application thereof

A composite monofilament and composite spinning technology, which is applied in the field of skin-core composite monofilament and its preparation, can solve the problems of high cost and high specific weight, and achieve the effects of preventing skin breakage, high mechanical strength, and good interface compatibility

Active Publication Date: 2019-08-30
ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the composite monofilament, both the skin layer and the core layer are polyester materials with similar performance. This product has stable performance, but has a large specific gravity and high cost.

Method used

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  • Sheath-core composite monofilament and preparing method and application thereof
  • Sheath-core composite monofilament and preparing method and application thereof

Examples

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preparation example Construction

[0054] On the other hand, the present invention provides a method for preparing the above-mentioned sheath-core composite monofilament, which includes the following steps:

[0055] The skin layer raw material and the core layer raw material are respectively melted and pressurized, and then subjected to spinning compound to obtain the skin-core composite monofilament.

[0056] Specifically, in some preferred embodiments of the present invention, the preparation method includes the following steps:

[0057] Provide horizontal heald wire drawing equipment, the horizontal heddle wire drawing equipment includes a skin extruder, a core extruder and a skin-core dual-channel composite spinning die;

[0058] The skin material placed in the skin extruder enters the skin channel of the composite spinning die after being melted, extruded and metered; the core material placed in the core extruder is melted, extruded and metered Enter the core layer channel of the composite spinning die;

[0059] Th...

Embodiment 1

[0066] Such as figure 1 As shown, this embodiment is a sheath-core composite monofilament with a wire diameter of 0.05 mm, consisting of a skin layer and a core layer wrapped in the sheath, and the weight ratio of the sheath layer to the core layer of the sheath-core composite monofilament is 5: 5. The skin layer is made of mixed raw materials of HDPE and LLDPE with a weight ratio of 9:1, and the core layer is made of PP raw materials. The interface of the sheath-core composite monofilament is circular, and the whole is fibrous.

[0067] Among them, the melt index of HDPE is 0.7g / 10min and the density is 0.943g / cm 3 ; The melt index of LLDPE is 1.5g / 10min, and the density is 0.918g / cm 3 ; PP's melt index is 3g / 10min, density is 0.895g / cm 3 .

[0068] The specific preparation process of the sheath-core composite monofilament is as follows:

[0069] 1) Provide horizontal heald wire drawing equipment, which includes a skin extruder, a core extruder and a skin-core dual-channel compos...

Embodiment 2

[0075] This embodiment is a sheath-core composite monofilament. The difference between the sheath-core composite monofilament and Example 1 lies in that the weight ratio of the skin layer to the core layer of the sheath-core composite monofilament in this embodiment is 3:7. Others are the same as in Example 1.

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Abstract

The invention relates to the field of composite fiber materials, in particular to a sheath-core composite monofilament and a preparing method and application thereof. The sheath-core composite monofilament comprises a sheath layer and a core layer, wherein the sheath layer comprises high-density polyethylene and low-density polyethylene, the weight ratio of the high-density polyethylene to the low-density polyethylene is (19-4):1, and the core layer is coated with the sheath layer and comprises polypropylene. By means of the sheath-core composite monofilament, the problems can be solved that the sheath of an existing sheath-core composite monofilament is easily broken, and the cost is high; the sheath-core composite monofilament has the advantages that the sheath is not easily broken, andthe cost is low.

Description

Technical field [0001] The invention relates to the field of composite fiber materials, in particular to a sheath-core composite monofilament and a preparation method and application thereof. Background technique [0002] The skin-core composite monofilament is widely used in mesh fabrics (such as filters, screens, etc.) and non-woven fabrics. [0003] For the current composite monofilament with a sheath-core structure, the effective raw materials of the sheath and core are generally a single component. For example, the CN201410226546.9 patent uses low-melting polyester as the skin layer and polyolefin as the core layer to produce a low-melting-point sheath-core polyester filament for use in non-woven products. Due to the large difference in physical properties between polyester and polyolefin and poor compatibility, composite filaments are prone to breakage and other problems, making it difficult to produce as an independent monofilament product. [0004] In filter mesh products, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/06D01F1/10D01D5/08B01D39/08
CPCD01F8/06D01F1/10D01D5/08B01D39/083
Inventor 丁伊可洪贤良章浩荣
Owner ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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