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Manufacture method of biodegradable non-woven material

A non-woven material, biodegradable technology, used in non-woven fabrics, textiles and papermaking, melt spinning, etc., can solve the problems of easy molecular degradation, poor thermal stability of PLA, and high cost, and achieve good air permeability and soft hand feel. , the effect of simple equipment

Inactive Publication Date: 2010-07-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, more researches are on polylactic acid (PLA) non-manufacturing cloth, but PLA has poor thermal stability, and its molecules are easy to degrade during melt processing, and the cost is relatively expensive.

Method used

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  • Manufacture method of biodegradable non-woven material
  • Manufacture method of biodegradable non-woven material
  • Manufacture method of biodegradable non-woven material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The method for making polysuccinate-co-butylene terephthalate (PBST) biodegradable nonwoven material of the present invention as described above mainly includes four processes of chip drying, melt extrusion, air drafting and fiber web reinforcement step. Each processing step adopts the following technological conditions:

[0015] Step 1: Dry polybutylene succinate-co-terephthalate slices at a starting temperature of 60°C, then increase the temperature to 100°C at a rate of 10°C / min, and dry at a constant temperature for 20 hours , to ensure that the moisture content of the slices is lower than 30ppm;

[0016] The second step: heat and melt the polymer chips in the screw extruder, and extrude them from the spinneret hole of the die head. The temperatures in zone four, zone five and zone six are 170, 230°C, 260°C, 260°C, 265°C, 265°C respectively, and the die head temperature is 260°C;

[0017] Step 3: When the melt is extruded from the spinneret hole of the die, the m...

Embodiment 2

[0022] The method for making polysuccinate-co-butylene terephthalate (PBST) biodegradable nonwoven material of the present invention as described above mainly includes four processes of chip drying, melt extrusion, air drafting and fiber web reinforcement step. Each processing step adopts the following technological conditions:

[0023] Step 1: Dry polysuccinate-co-butylene terephthalate slices at a starting temperature of 60°C, then increase the temperature to 100°C at a rate of 10°C / min, and dry at a constant temperature for 24 hours , to ensure that the moisture content of the slices is lower than 30ppm;

[0024] The second step: the polymer chips are heated and melted in the screw extruder, and extruded from the spinneret hole of the die head, wherein the extrusion speed is 6.7rpm, and the first zone, the second zone, the third zone, The temperatures in Zone 4, Zone 5 and Zone 6 are 190°C, 270°C, 290°C, 290°C, 290°C, 290°C respectively, and the die head temperature is 29...

Embodiment 3

[0030] The method for making polysuccinate-co-butylene terephthalate (PBST) biodegradable nonwoven material of the present invention as described above mainly includes four processes of chip drying, melt extrusion, air drafting and fiber web reinforcement step. Each processing step adopts the following technological conditions:

[0031] Step 1: Dry polysuccinate-co-butylene terephthalate slices at a starting temperature of 60°C, then increase the temperature to 100°C at a rate of 10°C / min, and dry at a constant temperature for 22 hours , to ensure that the moisture content of the slices is lower than 30ppm;

[0032] The second step: heat and melt the polymer chips in the screw extruder, and extrude them from the spinneret hole of the die head. The temperatures in Zone 4, Zone 5 and Zone 6 are 175°C, 240°C, 280°C, 280°C, 285°C, 285°C respectively, and the die head temperature is 265°C;

[0033] Step 3: When the melt is extruded from the spinneret hole of the die, the melt is...

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Abstract

The invention provides a manufacture method of a biodegradable non-woven material, which is characterized in that the method comprises the following steps: slicing and drying polyethylene succinate-co-p-benzene dicarboxylic acid butanediol ester; heating and fusing polymer slices in a screw rod extruding press; extruding fused mass from spinneret holes of a mold head; using high-pressure air flow for spraying and blowing at both sides of the spinneret holes when the fused mass is extruded from the spinneret holes of the mold head; tensioning the fused mass into superfine fiber; receiving the superfine fiber through a receiving roller; and forming a biodegradable PBST fused spraying non-woven material through the self adhesive effect of the superfine fiber. The non-woven material manufactured by the method of the invention has good thermodynamic performance, fine fiber diameter, good ventilation performance, soft hand feeling and the like, and also has excellent biodegrading capability. The product can be used in the fields of filtering materials, sanitation materials, package materials and the like, and belongs to a product with good development prospects and high added value.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a biodegradable polybutylene succinate-co-butylene terephthalate (PBST) as a raw material which can be obtained by melt blown web forming technology. Process for the manufacture of degradable nonwoven materials. Background technique [0002] With the continuous improvement of human awareness of environmental protection and oil crisis, the environmental protection and sustainability of disposable products used in large quantities have gradually attracted people's attention. In recent years, the research and development of biodegradable materials at home and abroad are very active. Due to its biodegradability and economy, degradable polyester has become a research hotspot at home and abroad. Polysuccinic acid-co-butylene terephthalate Glycol ester (PBST) is one of them. At present, scholars have done a lot of research on PBST. Inha University in Korea used succ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/16D01D5/098D01D1/09D01F6/84
Inventor 俞建勇李发学许凤陈凌燕马艳丽
Owner DONGHUA UNIV
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