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Non-woven structure with fibers catalyzed by a metallocene catalyst

A metallocene catalyst and non-woven technology, which is applied in non-woven fabrics, textiles, papermaking, infrastructure engineering, etc., can solve the problems of high biodegradation rate, etc., and achieve the effect of light weight, weight reduction, and good coverage

Inactive Publication Date: 2018-11-23
BEAULIEU INT GRP NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biodegradable rates are often too expensive

Method used

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  • Non-woven structure with fibers catalyzed by a metallocene catalyst
  • Non-woven structure with fibers catalyzed by a metallocene catalyst
  • Non-woven structure with fibers catalyzed by a metallocene catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0163] Embodiment 1 (bicomponent fiber)

[0164] This embodiment provides an entangled and bonded nonwoven structure that relies on the use of staple fibers, some or all of which are bicomponent fibers. The bicomponent fibers may be made of a second material, eg, polyolefin, such as polypropylene, whereby a first material different from the second material is exposed on the surface of the bicomponent fibers. There is a difference in melting point between the first material and the second material. For example, the second material may be conventional PP with a melting point of 160°C-165°C, while the first material is eg a specific polyolefin. The first material is preferably a polyolefin, such as a polyolefin produced by one or more catalysts, wherein one of the catalysts is a metallocene catalyst. The melting point of the first material is selected to be lower than the melting point of the second material, eg, at least 10°C lower. For example, the melting point range of the...

Embodiment approach 2

[0187]This embodiment provides an entangled nonwoven structure that relies on the use of staple fibers. The first staple fibers are made of a second material, eg polyolefin, such as polypropylene, and the first staple fibers are made of a first material, eg polyolefin, such as polypropylene. There is a difference in melting point between the first and second material. For example, the second material may be conventional PP with a melting point of 160°C-165°C, while the first material is, for example, a specific polyolefin. The second material is preferably a polyolefin, such as a polyolefin produced by one or more catalysts, wherein one of the catalysts is a metallocene catalyst. The melting point of the first material is selected to be lower than the melting point of the second material, eg, at least 10°C lower. For example, the melting point range of the first material may be 130°C-170°C (or 130-155°C).

[0188] The first fibers are bonded to the second fibers by a therma...

Embodiment approach 3

[0191] Fiber production:

[0192] Bicomponent fibers of the sheath / core type, the core of which is made of polypropylene (Polychim, PP HB12XF polypropylene with a melting point of 160 °C according to ISO 3146) and the sheath of which is made of polypropylene based with a metallocene catalyst Copolymers (according to ISO 3146, the melting point is 140 ℃ Total, MR10MX0) made. Two types of fibers are produced:

[0193] Type 1: 70 wt% core – 30 wt% sheath

[0194] Type 2: 80% core by weight – 20% sheath by weight

[0195] The properties of the fibers produced were as follows.

[0196]

Proportion

thickness

tenacity

Elongation

Type 1

70 / 30

5.2dtex

32cN / tex

154％

Type 2

80 / 20

5.2dtex

32cN / tex

161％

[0197] (Determination of decitex (dtex) according to ISO1973).

[0198] needle felt

[0199] The moving carpet is made from a needle punched nonwoven structure made entirely of bicomponent fibers. Thermal ...

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Abstract

The present invention describes a bonded and entangled non-woven structure made of at least 50% staple fibers by weight of the bonded and entangled non-woven structure, and at least a partial bondingof the fibers of the non-woven structure, the at least partial bonding comprising thermally activated bonds between a first polyolefin material produced with a catalyst comprising at least one metallocene catalyst and having a melting point in the range 130-170 DEG C and a second material having a melting point which is at least 10 DEG C higher than the melting point of the first material, the weight of the first material in the non-woven structure being at least 3% of the weight of the nonwoven structure.

Description

[0001] The present invention relates to bonded and entangled nonwoven structures for use, for example, in hygiene and health care, for example, in disposable or single-use products, for example in hospitals, schools and homes, in diapers or wipes use, as well as in carpets. The invention also relates to methods of making the bonded and entangled nonwoven structure. Background technique [0002] A nonwoven structure is a fabric-like material made of fibers bonded, eg, by chemical, mechanical, thermal or solvent treatment, which is neither woven nor knitted. [0003] Textile floor coverings are known as needle punched nonwoven structures which can be flat or have a structured surface or can be tufted and which can be used as temporary (e.g. single Use or limited time) floor coverings or carpets, or can be used for a long time, for example, for contract carpet (contract carpet) or industrial carpet or domestic carpet (domestic carpet). Such carpets may have a pile portion compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4291D06N7/00D04H1/4334D04H1/435D04H1/46
CPCD06N2201/0254D06N7/0068D04H1/485D04H1/4291B01D39/163B01D2239/0216B01D2239/0283B01D2239/064D04H1/5412E02D17/202D04H1/492D04H1/4334D04H1/435D04H1/46D04H1/5418D04H1/488D06N2201/0263D06N2201/10D06N2205/18D04H1/544
Inventor T·维罗曼D·德凯泽
Owner BEAULIEU INT GRP NV