Renewable and degradable superfine fiber synthetic fiber leather base cloth and preparation method thereof

A technology of ultra-fine fiber and synthetic fiber leather, applied in the direction of fiber treatment, fiber type, non-woven fabrics, etc., can solve the problems of non-biodegradable and non-renewable, and achieve the effect of protecting the earth's environment, reducing use, and promoting white pollution

Inactive Publication Date: 2022-05-03
明新梅诺卡(江苏)新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the materials used to produce sea-island composite fibers are mainly two petroleum-based synthetic materials, nylon and polyester. The disadvantages of their fiber products being non-biodegradable and non-renewable have led to a series of environmental problems and hidden resource hazards.

Method used

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  • Renewable and degradable superfine fiber synthetic fiber leather base cloth and preparation method thereof
  • Renewable and degradable superfine fiber synthetic fiber leather base cloth and preparation method thereof
  • Renewable and degradable superfine fiber synthetic fiber leather base cloth and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The first step: LDPE / PLA sea-island fiber and its preparation method:

[0033] (1) Raw material drying: put the LDPE and PLA chip raw materials into a vacuum drying oven for drying. The mass ratio of island component to sea component is 70:30. The PLA drying process is: 90°C, 12h; the LDPE drying process is: 100°C, 10h; the moisture content of the two materials after drying is less than 200ppm.

[0034] (2) Spinning: The number of islands in the sea-island composite spinneret is 37 islands. Pour the dried LDPE and PLA chips into the twin-screw island-in-the-sea composite spinning. The temperature of the screw 1~6 zone is set to 210°C, 215°C, 220°C, 225°C, 230°C, 235°C, and the die head temperature is set to is 230°C. Use ring air to cool, and obtain sea-island fiber primary silk after cooling.

[0035]

[0036] (3) Winding: The winding speed is 600m / min; the speed of the upper tanker is 25.0±5.0rpm.

[0037] (4) Cluster drafting: oil bath temperature control is ...

Embodiment 2

[0051] The first step: LDPE / PLA sea-island fiber and its preparation method:

[0052] (1) Raw material drying: put the LDPE and PLA chip raw materials into a vacuum drying oven for drying. The mass ratio of island component to sea component is 80:20. The PLA drying process is: 90°C, 12h; the LDPE drying process is: 100°C, 10h; the moisture content of the two materials after drying is less than 200ppm.

[0053] (2) Spinning: The number of islands in the sea-island composite spinneret is 37 islands. Pour the dried LDPE and PLA chips into the twin-screw island-in-the-sea composite spinning. The temperature of the screw 1~6 zone is set to 210°C, 215°C, 220°C, 225°C, 230°C, 235°C, and the die head temperature is set to is 230°C. Use ring air to cool, and obtain sea-island fiber primary silk after cooling.

[0054]

[0055] (3) Winding: The winding speed is 800m / min; the speed of the upper tanker is 25.0±5.0rpm.

[0056] (4) Cluster drafting: oil bath temperature control is ...

Embodiment 3

[0070] The first step: LDPE / PLA sea-island fiber and its preparation method:

[0071] (1) Raw material drying: put the LDPE and PLA chip raw materials into a vacuum drying oven for drying. The mass ratio of island component to sea component is 70:30. The PLA drying process is: 90°C, 12h; the LDPE drying process is: 100°C, 10h; the moisture content of the two materials after drying is less than 200ppm.

[0072] (2) Spinning: The number of islands in the sea-island composite spinneret is 16 islands. Pour the dried LDPE and PLA chips into the twin-screw island-in-the-sea composite spinning. The temperature of the screw 1~6 zone is set to 210°C, 215°C, 220°C, 225°C, 230°C, 235°C, and the die head temperature is set to is 230°C. Use ring air to cool, and obtain sea-island fiber primary silk after cooling.

[0073]

[0074] (3) Winding: The winding speed is 1000m / min; the speed of the upper tanker is 25.0±5.0rpm.

[0075] (4) Cluster drafting: oil bath temperature control is...

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Abstract

The invention discloses renewable and degradable superfine fiber synthetic fiber leather base cloth and a preparation method thereof, and relates to the technical field of superfine fiber leather. The preparation method comprises the following steps: 1, preparing LDPE / PLA sea-island fibers; the composite material is characterized in that low-density polyethylene (LDPE) is a sea phase, and PLA is an island phase; the mass ratio of the island component to the sea component is (70-90): (30-10); the fiber number of the sea-island fibers is 4 + / -0.5 dtex; 2, manufacturing an LDPE / PLA sea-island fiber needle-punched non-woven fabric; the non-woven fabric is characterized in that the fiber material is LDPE / PLA sea-island fiber, the gram weight of the non-woven fabric is 500 g / m < 2 >, and the thickness of the non-woven fabric is 1.9 + / -0.1 mm; 3, manufacturing a renewable and degradable superfine fiber synthetic fiber leather base cloth; the invention relates to a polylactic acid (PLA) fiber-reinforced polymer, which is characterized by having a three-dimensional net-shaped structure formed by polylactic acid (PLA) superfine fibers, and can realize the protection of the global environment and circular economy, help enterprises to realize carbon neutralization, promote the solving of white pollution generated by plastic fibers and the like, and reduce the use of petroleum-based plastics.

Description

technical field [0001] The invention belongs to the technical field of microfiber leather, and in particular relates to a renewable and degradable superfine fiber synthetic fiber leather base cloth and a preparation method thereof. Background technique [0002] Sea-island composite spinning is a method for preparing ultrafine fibers, which can obtain fibers with characteristics such as relatively small fiber diameter, low bending stiffness, and large specific surface area. The fabric prepared by it is soft to the touch and has good comfort performance. It is widely used in the field of microfiber leather and synthetic leather. At present, the materials used to produce sea-island composite fibers are mainly two petroleum-based synthetic materials, nylon and polyester. The disadvantages of their fiber products being non-biodegradable and non-renewable have led to a series of environmental problems and hidden resource hazards. Under the advocacy of protecting the earth's envir...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): D04H1/435D04H1/4382D04H1/46D04H1/70D06N3/00D06M15/564D06M13/02D06M101/32D06M101/20
CPCD04H1/435D04H1/4383D04H1/43838D04H1/46D04H1/70D06N3/0011D06M15/564D06M13/02D06M2101/32D06M2101/20
Inventor庄君新孙小军宋兵
Owner明新梅诺卡(江苏)新材料有限公司