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A kind of ironing underwear and its preparation process

An underpants and ironing technology, applied in the field of underpants, can solve the problems of poor softness and resilience of rubber, low stretch resilience of underpants fabrics, detachment between layers of underpants fabrics, etc., to achieve high air permeability and improve wearing lightness. , the effect of good softness and processability

Active Publication Date: 2020-12-18
开放工场(深圳)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the manufacture of seamless underwear, since the crotch of the underwear is closest to the private parts of the human body, and the crotch is an arc-shaped structure, if a layer of inner layer is seamlessly bonded at the crotch position, The softness and resilience of the rubber used are poor, which makes it difficult for the rubber to rebound with the expansion and contraction of the underwear fabric, which makes the underwear position of the glued part relatively hard, which causes wear and tear on the human skin and reduces the wearing comfort. Stretching and rebounding after a large force or long-term wearing will cause the rubber layer to break, and the broken part will cause the inner layer of the crotch to separate from the outer layer of the underwear fabric, or the gap between the crotch and the front and back panels. There is degumming and separation at the connection; on the other hand, after long-term wearing and multiple washings, the rubber material is easy to harden, and the co-stretch resilience with the underwear fabric is low, and it is prone to detachment from the underwear fabric, reducing the wearing usability

Method used

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  • A kind of ironing underwear and its preparation process
  • A kind of ironing underwear and its preparation process
  • A kind of ironing underwear and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] See Figure 1-4 , a kind of iron-on underwear, including an underwear body 1 and an iron-on member 2, the underwear body 1 includes a one-piece front panel 11, a crotch portion 12 and a rear panel 13; The provided crotch cloth 21, the hot-melt adhesive layer 22 arranged on the periphery of the crotch cloth 21, the release film layer 23 covering the lower surface of the hot-melt adhesive layer 22, the crotch of the underwear body 1 12 is bonded and connected with the crotch cloth 21 through a hot-melt adhesive layer 22; the hot-melt adhesive layer 22 is made of polyurethane composite hot-melt adhesive.

[0068] The thickness of the crotch cloth 21 is 0.8-1.2mm, the thickness of the hot melt adhesive layer 22 is 0.23-0.28mm, and the thickness of the release film layer 23 is 0.8-1.2mm; the hot melt adhesive layer 22 includes The first adhesive area 221 , the second adhesive area 222 , the third adhesive area 223 and the fourth adhesive area 224 are connected end to end. ...

Embodiment 2

[0078] The difference between this embodiment and above-mentioned embodiment 1 is:

[0079] Described polyurethane composite hot-melt adhesive comprises the raw material of following weight portion:

[0080]

[0081] The NCO / OH ratio of the NCO-terminated polyurethane prepolymer is 1.8.

[0082] Each part of the mixed monomer comprises 2 parts of methyl methacrylate, 0.5 part of hydroxyethyl acrylate and 4 parts of N-methylol acrylamide; the filler is made of talcum powder, calcium carbonate and paraffin in a weight ratio of 1.2 : a mixture composed of 1:0.6; the catalyst is a mixture composed of dimorpholine diethyl ether, dimethylethanolamine and dibutyltin dilaurate in a weight ratio of 3:2.0:1.

[0083] Described polyurethane composite hot-melt adhesive is made by following steps:

[0084] Step (1): Add the filler to the NCO-terminated polyurethane prepolymer in parts by weight, add polyisobutylene and mixed monomers in sequence after mixing and dispersing, mix and st...

Embodiment 3

[0100] The difference between this embodiment and above-mentioned embodiment 1 is:

[0101] Described polyurethane composite hot-melt adhesive comprises the raw material of following weight portion:

[0102]

[0103] The NCO / OH ratio of the NCO-terminated polyurethane prepolymer is 1.9.

[0104] Every part of said mixed monomer comprises 2.2 parts of methyl methacrylate, 0.6 part of hydroxyethyl acrylate and 4.5 parts of N-methylol acrylamide; : 1:0.7 mixture; the catalyst is a mixture of dimorpholine diethyl ether, dimethylethanolamine and dibutyltin dilaurate in a weight ratio of 3.5:1.9:1.

[0105] Described polyurethane composite hot-melt adhesive is made by following steps:

[0106] Step (1): In parts by weight, add the filler to the NCO-terminated polyurethane prepolymer, after mixing and dispersing, add polyisobutylene and mixed monomers in sequence, mix and stir at 100°C for 23min, then cool down to 80°C ℃ insulation to prepare the pre-reactant;

[0107] Step (2):...

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Abstract

The invention relates to the technical field of underwear, in particular to hot-sticking underwear and a preparation technology thereof. The hot-sticking underwear includes an underwear body and a hot-sticking piece, and the underwear body includes a front piece, a crotch part and a rear piece which are of a one-piece type; the hot-sticking piece includes lower crotch cloths successively arrangedfrom top to down, hot melt adhesive layers arranged around the edges of the lower crotch cloths and release film layers covering the lower surfaces of the hot melt adhesive layers, and the crotch partof the underwear body is bonded to the lower crotch cloths through the hot melt adhesive layers; and the hot melt adhesive layers are made by combining polyurethane with hot melt adhesives. The hot-sticking underwear is simple in structure, by combining the polyurethane with the hot melt adhesives, the edges of the lower crotch cloths and the crotch edge of the underwear body are bonded, adhesionstability is high, softness is good, the lower crotch cloths and underwear body can be stretched and rebounded, wearing is comfortable, the four edges of the lower crotch cloths are bonded to the underwear body, the middle area has no adhesive to bond, air permeability of the underwear is high, and bacteria are not prone to being produced.

Description

technical field [0001] The invention relates to the technical field of underwear, in particular to a hot-stick underwear and a preparation process thereof. Background technique [0002] At present, intimate clothing made of seamless fabrics is gradually becoming popular, replacing the traditional sewing process, avoiding the wear and tear on the human skin caused by the seam bone caused by sewing, and improving the wearing comfort. [0003] For the manufacture of seamless underwear, since the crotch of the underwear is closest to the private parts of the human body, and the crotch is an arc-shaped structure, if a layer of inner layer is seamlessly bonded at the crotch position, The softness and resilience of the rubber used are poor, which makes it difficult for the rubber to rebound with the expansion and contraction of the underwear fabric, which makes the underwear position of the glued part relatively hard, which causes wear and tear on the human skin and reduces the wea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A41B9/00A41B17/00C09J151/08C09J151/06C09J11/04C09J11/08C09J163/00
CPCA41B9/001A41B9/004A41B17/005A41B2300/52A41B2400/20C08K2003/265C08L2205/02C08L2205/03C08L2205/035C09J11/04C09J11/08C09J151/06C09J151/08C09J163/00C08L51/003C08L45/00C08L51/06C08L91/06C08L93/04C08K3/34C08K3/26
Inventor 容轶金华雷艳黄福开
Owner 开放工场(深圳)科技有限公司
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