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High-strength polylactic acid SMS composite non-woven material and preparation method thereof

A technology of non-woven materials and polylactic acid, which is applied in the field of non-woven materials, can solve the problems that the strength is difficult to meet the requirements of the required length, the product has low strength, and the performance is affected, so as to achieve excellent biodegradability and excellent mechanical properties. Effect

Inactive Publication Date: 2016-05-18
ZHANGJIAGANG JUNMA NON WOVEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if it is made into an SMS composite nonwoven material, its strength is difficult to meet the requirements of the required length
Chinese patent ZL201010163359.2 discloses a fully degradable polylactic acid fiber SMS composite nonwoven fabric and its manufacturing method. The spunbonded layer of the material produced by this method has a large fiber fineness, resulting in low product strength, especially in some fields. The performance in the packaging field will be greatly affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, the polylactic acid spun-bonded nonwoven material slice with a melt index of 35g / 10min at 210°C and a melting point of 170°C and the meltblown nonwoven material slice of polylactic acid with a melt index of 85g / 10min at 210°C and a melting point of 170°C were separated at 100 Dry at ℃ for 4 hours, add 5 parts of polyurethane elastomer by mass and 95 parts of dried polylactic acid masterbatch into the screw extruder, melt and extrude at 170℃, cool and granulate, and obtain modified polylactic acid spunbonded non-woven fabrics. Weaving material slices and modified polylactic acid melt-blown nonwoven material slices; the modified polylactic acid spunbonded nonwoven material slices are fed into the screw extruder for melt spinning, and the melt passes through the screw to the spinning assembly to the spinneret Spun out, cooled by high-speed air flow and stretched, then divided into wires and laid to obtain a modified polylactic acid spunbond nonwoven material; the spi...

Embodiment 2

[0023] First, the polylactic acid spun-bonded nonwoven material slice with a melt index of 30g / 10min at 210°C and a melting point of 170°C and the meltblown nonwoven material slice of polylactic acid with a melt index of 80g / 10min at 210°C and a melting point of 170°C were placed at 100°C respectively. Dry at ℃ for 4 hours, add 20 parts by mass of polyurethane elastomer and 80 parts of dried polylactic acid masterbatch into the screw extruder, melt and extrude at 170℃, cool and granulate, and obtain modified polylactic acid spunbonded non-woven fabric. Weaving material slices and modified polylactic acid melt-blown nonwoven material slices; the modified polylactic acid spunbonded nonwoven material slices are fed into the screw extruder for melt spinning, and the melt passes through the screw to the spinning assembly to the spinneret Spun out, cooled by high-speed air flow and stretched, then divided into wires and laid to obtain a modified polylactic acid spunbond nonwoven mate...

Embodiment 3

[0026] First, the polylactic acid spun-bonded nonwoven material slice with a melt index of 20g / 10min at 210°C and a melting point of 180°C and the meltblown nonwoven material slice of polylactic acid with a melt index of 75g / 10min at 210°C and a melting point of 180°C were separated at 100 Dry at ℃ for 4 hours, add 30 parts by mass of polyurethane elastomer and 70 parts of dried polylactic acid masterbatch into the screw extruder, melt and extrude at 185℃, cool and granulate, and obtain modified polylactic acid spunbonded non-woven fabrics. Weaving material slices and modified polylactic acid melt-blown nonwoven material slices; the modified polylactic acid spunbonded nonwoven material slices are fed into the screw extruder for melt spinning, and the melt passes through the screw to the spinning assembly to the spinneret Spun out, cooled by high-speed air flow and stretched, then divided into wires and laid to obtain modified polylactic acid spunbonded nonwoven materials; the s...

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Abstract

The invention relates to a high-strength polylactic acid SMS composite non-woven material which is in a three-layered structure and includes: an upper layer and a lower layer, which are formed by modified polylactic acid spunbond non-woven materials, and a middle layer which is formed by a modified polylactic acid melt-blow non-woven material. The high-strength polylactic acid SMS composite non-woven material is 20-100 g / m<2> in surface density, is 50-160 N / 5cm in longitudinal strength, is 63-130% in longitudinal breaking elongation, is 60-180 N / 5cm in transversal strength and is 60-120% in transversal breaking elongation. The high-strength polylactic acid SMS composite non-woven material is excellent in mechanical performance and biodegradability. The invention also provides a preparation method of the high-strength polylactic acid SMS composite non-woven material.

Description

technical field [0001] The invention belongs to the field of nonwoven materials, and in particular relates to a high-strength polylactic acid SMS composite nonwoven material and a preparation method thereof. Background technique [0002] The advent and rapid development of synthetic polymer materials in the 20th century has greatly improved human life. Synthetic polymer materials have been listed as the four pillars of the material field along with steel, wood and cement. However, the huge production and consumption of synthetic polymer materials has also produced two major issues: the massive consumption of limited petroleum resources and the environmental pollution caused by waste polymers. These issues have drawn global attention. In the 21st century, many countries regard building a sustainable resource-recycling society as one of their national policies, and vigorously develop environmentally friendly biodegradable polymer materials that have flourished worldwide. [...

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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IPC IPC(8): B32B27/02B32B37/15D01D5/08
Inventor 张瑜彭鹏李素英张伟
Owner ZHANGJIAGANG JUNMA NON WOVEN CO LTD
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