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Pure polylactic acid flocculus and manufacturing method thereof

A manufacturing method and polylactic acid technology are applied in chemical instruments and methods, synthetic resin layered products, lamination devices, etc., to achieve the effects of simple process, low heat setting temperature and strong operability

Active Publication Date: 2014-11-19
杭州爱多倍生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a pure polylactic acid flake and its manufacturing method. The present invention solves the problem of glue bonding in the production process of pure polylactic acid flakes, so that the flakes can ensure the characteristics of pure polylactic acid , does not contain other chemical additives, and at the same time can make the elastic recovery, compression rate, and warmth retention of the flakes meet the industry standard requirements, and maintain natural antibacterial and non-allergenic properties, especially suitable for filling materials for babies, children, and the elderly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of pure polylactic acid flakes, including upper flakes, middle flakes and lower flakes, the upper flakes, middle flakes and lower flakes are stacked in sequence, and the upper flakes and the lower flakes are all made of diameters 3D, two-component polylactic acid short fiber with a length of 64mm, the middle layer floc adopts a hollow polylactic acid short fiber with a diameter of 10D and a length of 76mm; the two-component short polylactic acid includes inner and outer layers; the outer The layer adopts low-melting point polylactic acid fiber, the inner layer adopts conventional polylactic acid fiber, the thickness of the upper layer of flakes is 1 mm, the thickness of the lower layer of flakes is 1 mm, and the thickness of the middle layer of flakes is 2 mm.

[0023] 1) Select hollow polylactic acid short fibers with a mass proportion of 70% and bicomponent polylactic acid short fibers with a mass proportion of 30%;

[0024] 2) The hollow polylactic acid short ...

Embodiment 2

[0030] A kind of pure polylactic acid flakes, including upper flakes, middle flakes and lower flakes, the upper flakes, middle flakes and lower flakes are stacked in sequence, and the upper flakes and the lower flakes are all made of diameters 1.2D, two-component polylactic acid short fiber with a length of 38mm, the middle layer of flakes adopts a hollow polylactic acid short fiber with a diameter of 3D and a length of 42mm; the two-component short polylactic acid fiber includes inner and outer layers; The outer layer adopts low-melting polylactic acid fiber, the inner layer adopts conventional polylactic acid fiber, the thickness of the upper layer of flakes is 1.25 mm, the thickness of the lower layer of flakes is 1 mm, and the thickness of the middle layer of flakes is 2 mm.

[0031] 1) Select 90% mass proportion of hollow polylactic acid short fibers, and 10% mass proportion of bicomponent polylactic acid short fibers;

[0032] 2) The hollow polylactic acid short fibers s...

Embodiment 3

[0038] A kind of pure polylactic acid flakes, including upper flakes, middle flakes and lower flakes, the upper flakes, middle flakes and lower flakes are stacked in sequence, and the upper flakes and the lower flakes are all made of diameters 2D, two-component polylactic acid short fiber with a length of 50mm, the middle layer floc adopts a hollow polylactic acid short fiber with a diameter of 8D and a length of 60mm; the two-component short polylactic acid includes inner and outer layers; the outer The layer adopts low-melting point polylactic acid fiber, the inner layer adopts conventional polylactic acid fiber, the thickness of the upper layer of wadding is 1 mm, the thickness of the lower layer of wadding is 1 mm, and the thickness of the middle layer of wadding is 2.25 mm.

[0039] 1) Select hollow polylactic acid short fibers with 80% mass proportion and bicomponent polylactic acid short fibers with 20% mass proportion;

[0040] 2) The hollow polylactic acid short fiber...

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Abstract

The invention discloses a pure polylactic acid flocculus and a manufacturing method thereof. The flocculus comprises an upper flocculus, a middle flocculus, and a lower flocculus; and the upper flocculus, the middle flocculus, and the lower flocculus are orderly laminated. The flocculus is characterized in that the upper flocculus and the lower flocculus are both made of a double-component polylactic acid short fiber with a diameter of 1.2 D to 3 D and a length of 38-64 mm, and the middle flocculus is made of a hollow polylactic acid short fiber with a diameter of 3 D to 10 D and a length of 42-76 mm. The manufacturing method does not use glue to adhere the pure polylactic acid flocculi during the production process, so the pure polylactic acid flocculi are not contaminated by other components, and do not contain any other chemical additives. At the same time the elasticity recovery, compression rate, and heat insulating ability of the pure polylactic acid flocculus all meet the industrial standards, furthermore, the pure polylactic acid flocculus has the characteristics of nature, bacterium inhibition, and inability to cause sensitivity, and thus is very suitable for being used as a filling material of bed clothes for the children or the elders.

Description

technical field [0001] The invention relates to a pure polylactic acid flake and a manufacturing method. Background technique [0002] As a new type of environmentally friendly and biodegradable polyester fiber, polylactic acid (PLA) fiber has high strength, good elasticity, skin-friendly, antibacterial, and non-allergenic properties. It has broad applications in the fields of bedding, underwear, and sanitary materials. application prospects. [0003] At present, polylactic acid fiber is used as a filler in quilts, pillows, etc., and many products have come out, but the filler used as flakes in bedding and clothing, especially pure polylactic acid flakes, can only be processed by spraying similar to spraying. The production process of collodion can only be completed. As a green and environmentally friendly material, adding glue as an adhesive to make wadding will have a greater toxic effect on the wadding. Therefore, the newly produced wadding needs a certain period of time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/28B32B38/18B32B37/06
Inventor 马学所季萍
Owner 杭州爱多倍生物科技有限公司
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