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Biodegradable two-component low-melting point composite fiber

A composite fiber, biodegradable technology, applied in the direction of conjugated synthetic polymer man-made filaments, etc., can solve the problem of non-woven fabrics being non-biodegradable

Inactive Publication Date: 2011-09-21
YANCHENG INST OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0046] In order to overcome the non-biodegradable problem of the currently commonly used composite short fibers and the non-woven fabrics made of them, this patent proposes a biodegradable two-component sheath-core composite fiber with a low melting point and its manufacturing method

Method used

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  • Biodegradable two-component low-melting point composite fiber
  • Biodegradable two-component low-melting point composite fiber

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0082] Example 1: 2D*38mm PBS35 / PLA65 two-component skin-core composite short fiber

[0083] refer to figure 2 Shown, the polybutylene succinate (PBS) / polylactic acid (PLA) sheath-core composite staple fiber production method that patent example 1 of the present invention makes is as follows:

[0084] Raw materials used:

[0085] (1) Polybutylene succinate (PBS) Origin: Haier Chemical Engineering Plastics National Engineering Research Center Co., Ltd.

[0086] Grade Q320 melt index MFI 25-30

[0087] Melting point 113(℃) crystallinity 20-35(%)

[0088] Glass transition temperature -46(°C) Heat distortion temperature 70(°C)

[0089] (2) Polylactic acid (PLA) Origin: Ningbo Global Plastic Products Co., Ltd.

[0090] Grade A312 Intrinsic viscosity IV(dl / g)0.2~10

[0091] Glass transition temperature > 60°C, melting point > 170°C,

[0092] Optical purity > 97% Viscosity average molecular weight 100000-800000

[0093] Monomer content < 0.5%

[0094] The above two raw mate...

example 2

[0105] Mix 31% of the above-mentioned short fibers with 69% viscose fibers (1.5D*38mm), comb to form a fiber web, and then pass through a pair of hot pressing rollers. The temperature of the hot pressing roll is 175-185°C, the fibers are melted, and the fibers are bonded together to form a biodegradable hot-rolled non-woven fabric. The weight of the non-woven fabric is 18GSM, and the product is used for the surface material of female sanitary napkins. Example 2 1.5D*6mm modified PBS / PLA two-component sheath-core composite short fiber

[0106] For the PBS particles in Example 1, CoPBS was added. CoPBS is made from PBS by grafting maleic anhydride. PBS, CoPBS, and polylactic acid PLA are vacuum-dried separately, and the moisture content of the raw materials used is less than 50PPM. The skin-to-core ratio was 35:65, and the cortical PBS contained 7.5% CoPBS.

[0107] The above skin / core two raw materials are dried using separate drum dryers. The following process is basicall...

example 3

[0124] Example 3 1.5D*6MM modified PBS35 / PLA65 25% 65 good

[0125] Fluff pulp 75%

[0126] Comparative sample 1 2D*38MM PE / PP 100% 17 Poor

[0127] Comparative sample 1 2D*4MM PE / PP 36% 80 Poor

[0128] Fluff pulp 75%.

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Abstract

The invention provides a biodegradable two-component low-melting point composite fiber. The material of the biodegradable two-component low-melting point composite fiber comprises poly (butylene succinate) (PBS) and another biodegradable polymer; and the cross section of a fiber made of the two materials has a sheath and core structure. In particular, in the biodegradable two-component low-melting point composite fiber, the PBS is used as a sheath layer of the composite fiber; and polylactic acid esters (PLA) is used as a core layer of the composite fiber. An additive is added into the sheath layer PBS; and the additive is grafted by the sheath layer PBS and maleic anhydride or other unsaturated anhydride. The composite short fiber has complete biodegradability, can be well bonded to other fibers, in particular the fibers with cellulose as main constitutions; and the manufactured non-woven cloth has biodegradability and bio-decomposability.

Description

Technical field [0001] This patent relates to a biodegradable two-component low-melting composite fiber. Specifically, it is a polybutylene succinate (PBS) / polylactic acid (PLA) sheath-core bicomponent low-melting composite fiber. Background technique [0002] Two-component low-melting composite fiber is a kind of hot-melt adhesive fiber. Hot-melt adhesive fibers can be bonded to themselves or bonded with other fibers to form nonwovens. Due to the hot-melt adhesive fiber, the non-woven fabric bonding process has achieved a breakthrough in the fiber self-bonding without any chemical glue. The production method is simple, non-toxic, non-polluting, low energy consumption, low equipment investment, and high production speed. quick. In the development of the thermal bonding process of nonwovens, the successful development of thermal bonding fibers has played a key role. [0003] Hot-melt adhesive fibers, including single-component thermoplastic fibers and bi-component low-mel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14
Inventor 宣志强
Owner YANCHENG INST OF IND TECH
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