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Non-woven fabric laminate and method for production thereof

A non-woven fabric layer and non-woven fabric technology, applied in the field of non-woven fabric laminates and their manufacturing, can solve the problems of insufficient stretchability, softness, and processability, and achieve less sticking and excellent curl resistance Effect

Active Publication Date: 2012-01-04
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned methods all have insufficient problems such as stretchability, softness, processability, etc., and need to be further improved.

Method used

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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  • Non-woven fabric laminate and method for production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0120] Hereinafter, the present invention will be described more specifically in conjunction with examples, but the present invention is not limited to these examples.

[0121] The physical property values ​​and the like in Examples and Comparative Examples were measured by the following methods.

[0122] (1) Weight per unit area [g / m 2 ]

[0123] Take 6 test pieces of 200 mm (MD) x 50 mm (CD) from the nonwoven fabric and / or the nonwoven fabric laminate. Among them, the positions for taking the test piece are MD and CD at any 3 positions (a total of 6 positions). Next, the mass (g) of each obtained test piece was measured using the upper-pan electronic balance (manufactured by Kenseiko Kogyo Co., Ltd.). Calculate the mass average value of each test piece. Converted from the obtained average value to the equivalent of 1m 2 The mass (g) of each non-woven fabric sample is rounded off to the second place after the decimal point, and it is used as the weight per unit area of ​...

manufacture example 1

[0178] In a nitrogen atmosphere, diphenylmethane diisocyanate (hereinafter referred to as MDI) was put into tank A, and the temperature was adjusted to 45° C. while stirring without mixing air bubbles.

[0179] In a nitrogen atmosphere, 628.6 parts by weight of polyester polyol with a number average molecular weight of 2000 (manufactured by Mitsui Takeda Chemical Co., Ltd., trade name: Takeraku U2024), 2.21 parts by weight of IRGANOX 1010 and 77.5 parts by weight of 1,4-butanediol were packed. Put it into tank B and adjust to 95°C while stirring. This mixture is referred to as polyol solution 1.

[0180] The hard segment amount calculated from these reaction raw materials was 37.1% by weight.

[0181] Then, through the infusion pipeline provided with a gear pump and a flow meter in the middle, the MDI is quantitatively delivered to a high-speed mixer (SM40) adjusted to 120° C. ), after stirring and mixing at 2000rpm for 2 minutes, it was delivered to a static mixer. The sta...

Embodiment 1

[0185]

[0186] The MFR of 96 parts by weight (according to ASTM D1238, measured at a temperature of 230°C and a load of 2.16 kg) is 60 g / 10 minutes, and the density is 0.91 g / cm 3 , a propylene homopolymer with a melting point of 160°C (hereinafter referred to as "PP-1") and 4 parts by weight of MFR (according to ASTM D1238, measured at a temperature of 190°C and a load of 2.16kg) is 5g / 10min, and the density is 0.97g / cm 3 and high-density polyethylene (hereinafter referred to as "HDPE") having a melting point of 134° C. were mixed to prepare a thermoplastic resin composition (B-1).

[0187]

[0188] The TPU-1 prepared in the above-mentioned Production Example 1 and the above-mentioned B-1 were independently melted with an extruder (ф30 mm), and then a spunbonded non-woven fabric forming machine with a spinning nozzle (with The length of the direction perpendicular to the direction of travel of the machine is 100mm), the temperature of the resin and the die are both 220...

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Abstract

Disclosed is a non-woven fabric laminate which is excellent in shrink properties, flexibility, water-resistance, anti-fuzz properties and anti-curl properties and shows less stickiness. The non-woven fabric laminate comprises at least one meltblown non-woven fabric layer and a mixed spunbonded non-woven fabric layer laminated on the both sides of the meltblown non-woven fabric layer, wherein the mixed spunbonded non-woven fabric layer comprises a long fiber compose of a thermoplastic elastomer (A) and a long fiber composed of a thermoplastic resin (B) which is different from the thermoplasticelastomer (A) at a ratio of [10-90 wt%]:[90-10 wt%] (provided that the sum total of the components (A) and (B) is 100% by weight).

Description

technical field [0001] The present invention relates to a nonwoven fabric laminate having excellent stretchability, flexibility, water resistance, fuzz resistance, and curl resistance and less sticking property, and a method for producing the same. Background technique [0002] In recent years, nonwoven fabrics have been widely used in various applications due to their excellent air permeability and softness. Therefore, nonwoven fabrics are required not only to have various properties corresponding to their uses but also to improve their properties. [0003] For example, non-woven fabrics used in sanitary materials such as disposable diapers and sanitary napkins, base fabrics of compress materials, etc., are required not only to have water resistance, but also to have good moisture permeability. In addition, stretchability and bulkiness are also required depending on the application. [0004] As one of the methods of imparting stretchability to nonwoven fabrics, the follow...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/16B32B5/26D04H3/14D04H3/007D04H3/009D04H3/147D04H3/153
CPCD04H13/007B32B5/26D04H13/002D04H3/16B32B5/02B32B5/022B32B2262/0215B32B2262/14B32B2307/50D04H1/559D04H3/14D04H3/005D04H3/02D04H13/00
Inventor 本村茂之铃木健一国本尚佑
Owner MITSUI CHEM INC
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