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Polylactic acid-fibers based non-woven, method for manufacturing thereof

一种无纺布、聚乳酸的技术，应用在人造丝制造、纤维化学特征、纺织品和造纸等方向，能够解决低伸长率等问题

Pending Publication Date: 2018-08-03
AHLSTROM MUNKSJO OYJ +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, typical nonwovens made from PLA do not achieve this goal, as they have very low elongation due to the material properties of PLA, and cannot be thermoformed without unacceptable mechanical failure into proper Element Construction

Method used

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  • Polylactic acid-fibers based non-woven, method for manufacturing thereof
  • Polylactic acid-fibers based non-woven, method for manufacturing thereof
  • Polylactic acid-fibers based non-woven, method for manufacturing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0140] Four different sets 1-4 were performed, each set comprising 4 nonwoven supports. The support has a construction as detailed below. Within each group, the nature of the plasticizer varied.

[0141] Support 1: 100% by weight of monocomponent fibers of PLA 6100D supplied by NATURWORKS.

[0142] Support 2: 100% by weight of monocomponent fibers made from a mixture of fibers comprising 93% by weight of PLA 6100D and 7% by weight of plasticizer.

[0143] Support 3: 100% by weight of a bicomponent fiber consisting of a core of PLA 6100D at 80% by weight of the fiber and an envelope made of PLA 6302D at 20% by weight of the fiber. In this case, the core does not contain plasticizers.

[0144] Support 4 (invention): 100% by weight of a core containing PLA 6100D (93% by weight relative to the weight of the core) and a plasticizer (7% by weight relative to the weight of the core) and an envelope made of PLA 6302D A bicomponent fiber consisting of a core comprising 80% by weigh...

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Abstract

A non-woven fabric comprising bicomponent fibers. The non-woven fabric has a core containing polylactic acid (PLA-1), coated with an envelope containing polylactic acid (PLA-2). The fibers are characterised in that PLA-1 is a copolymer of lactic acid monomers L1 and lactic acid monomers D1, and PLA-2 is a copolymer of lactic acid monomers L2 and lactic acid D2, whose D2 monomers rate is greater than the monomers rate D1 of PLA- 1. The core further contains a polymeric plasticizer. The non- woven fabric may be used for making coffee filters and / or capsules via a thermoforming process for usein a percolating apparatus.

Description

[0001] Cross references to related patent applications [0002] This patent application claims priority from French patent application No. FR1562319, filed December 14, 2015, and also claims priority from PCT application PCT / EP2015 / 079653, filed December 14, 2015, the entire teaching and disclosure of which is adopted by Incorporated herein by reference. technical field [0003] The invention relates to the field of nonwovens, especially nonwovens for the food industry. The invention relates more particularly to the field of coffee or tea capsules (sometimes called "cups" or "bags") for use in percolators. These machines are found more specifically in the American market (drip coffee). [0004] In the following description, the present invention will be described more specifically in connection with the field of coffee. However, the invention is suitable for other beverage preparation applications such as cocoa (hot chocolate) as well as tea and other infusions (herbs, powd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D04H1/435D04H3/011
CPCD04H1/435D04H3/011D01F1/10D04H1/55D01F6/625D01F8/14B65B29/022B65D85/8061Y02W90/10B65D85/8043B65B29/025A47J31/06C08K5/0016C08L67/04C08L2205/02C08L2205/16
Inventor R·沃尔普E·皮卡德S·柯林斯
Owner AHLSTROM MUNKSJO OYJ