CN101591860B - Scratch resistant processing method of non-figured island ultrafine fiber napped leather - Google Patents

Scratch resistant processing method of non-figured island ultrafine fiber napped leather Download PDF

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Publication number
CN101591860B
CN101591860B CN2008100383959A CN200810038395A CN101591860B CN 101591860 B CN101591860 B CN 101591860B CN 2008100383959 A CN2008100383959 A CN 2008100383959A CN 200810038395 A CN200810038395 A CN 200810038395A CN 101591860 B CN101591860 B CN 101591860B
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China
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sea
islands
base cloth
processing
ultrafine fiber
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CN2008100383959A
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Chinese (zh)
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CN101591860A (en
Inventor
王克亮
孙向浩
刘文辉
邬花元
夏佳第
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上海华峰超纤材料股份有限公司
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Abstract

The invention relates to a scratch resistant processing method of non-figured island ultrafine fiber napped leather, which comprises the following steps: taking PA6 as an island; taking PE with low density as the sea; adding a small amount of ionic polymer; and spinning an ultrafine fiber by a single-screw blending method. The ultrafine fiber is needled into non-woven fabrics, impregnated with PU resin, reduces toluene contents, and is expanded for drying, sliced, ground, and the like to manufacture ultrafine fiber napped leather. The islands of the ultrafine fiber are partially crosslinked due to the function of ionic compound in a production flow so as to prevent the fiber in the napped leather from falling when the napped leather is used as a material to be made into products of gloves, shoes, clothing, bags, suitcases, and the like, thereby greatly improving the scratch resistance of the napped leather.

Description

The scratch resistance processing method of island ultrafine fiber suede not
Technical field
The present invention relates to a kind of not island ultrafine fiber suede, relate in particular to this not scratch resistance processing method of island ultrafine fiber suede.
Background technology
The scratch resistance of suede is an important indicator in the superfine fiber chemical leather use, the fiber of present domestic suede adopt indefinite island the spinning of single-screw extrusion machine method (referring to: magnify province, Wang Rui. superfine fibre production technology and application).There is a bigger limitation in this product: fiber lagoon island axial discontinuous and very inhomogeneous, and fiber is easy to come off in follow-up finished product, and writing property is relatively poor.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of scratch resistance processing method of not island ultrafine fiber suede, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention realizes by following steps:
Adopting the bi-component blend melt spinning to obtain islands-in-sea type fibre, is " island " with nylon (PA6) wherein, is " sea " with low density polyethylene (LDPE), adds the micro ion polymer simultaneously; Nylon (PA6) wherein: polyethylene (pu): the weight ratio of ionomer is 0.6~0.4: 0.4~0.6: 0.001~0.006;
Above-mentioned sea-island composite fiber is made nonwoven fabric through shredding, combing, lapping and acupuncture;
With nonwoven fabric impregnation polyurethane (PU) resin after the HEAT SETTING that plates, adopt dimethyl formamide (DMF) aqueous solution that polyurethane resin is solidified then, with warm water dimethyl formamide is cemented out again;
Utilize toluene solution that the low density polyethylene (LDPE) in the islands-in-sea type fibre is extracted, be about to " sea " and extract out, make and only contain nylon, ionomer and polyurethane resin in the base cloth;
The base cloth that makes is carried out chemical softening processing, expanding typing processing successively and rubs the skin processing;
The product that makes is carried out promptly getting the good suede of scratch resistance after split and mill skin and plucking handle.
Compared with prior art, the invention has the beneficial effects as follows: the island distribution that has not only changed conventional islands-in-sea type fibre, also improved the technology wide looseness of this fiber production, obtain the splendid suede of scratch resistance simultaneously, also improved the physical property of suede, all improve a lot as fracture strength and tearing strength, can reach the effect of natural skin fully; Further enlarge the use field of synthetic leather, improved the class of synthetic leather product.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is described in further detail:
The present invention realizes by following steps:
1, adopting the bi-component blend melt spinning to obtain islands-in-sea type fibre, is " island " with nylon (PA6) wherein, is " sea " with low density polyethylene (LDPE), adds the micro ion polymer simultaneously; Nylon (PA6) wherein: polyethylene (pu): the weight ratio of ionomer is 0.6~0.4: 0.4~0.6: 0.001~0.006;
2, above-mentioned sea-island composite fiber is made nonwoven fabric through shredding, combing, lapping and acupuncture;
3, nonwoven fabric is plated impregnation polyurethane (PU) resin after the HEAT SETTING adopts dimethyl formamide (DMF) aqueous solution that polyurethane resin is solidified then, with warm water dimethyl formamide is cemented out again;
4, utilize toluene solution that the low density polyethylene (LDPE) in the islands-in-sea type fibre is extracted, be about to " sea " and extract out, make and only contain nylon, ionomer and polyurethane resin in the base cloth;
5, the base cloth that makes is carried out chemical softening processing, expanding typing processing successively and rubs the skin processing;
6, the product that makes is carried out promptly getting the good suede of scratch resistance after split and mill skin and plucking handle.
In step 1: to adopt the bi-component blend melt spinning to get islands-in-sea type fibre is batch mixing, extrude, spinning, oil, drawing-off, curl, typing, cut off the islands-in-sea type fibre that operation makes (4~8) D * (38~65) mm; Requirement fibre strength height, fiber number is even, and oil content and crispation number are stable, and the island is evenly distributed mutually.
In step 2: utilizing nonwoven production equipment that islands-in-sea type fibre shredding, combing, lapping and acupuncture are made grammes per square metre is 380~900g/m 2, thickness is the nonwoven fabric of 1.60~4.00mm.The requirement nonwoven thickness is even, and grammes per square metre is stable, surfacing.
In step 3: with nonwoven fabric impregnation high elasticity, high moisture-proof, the polyurethane resin of high-wearing feature, polyurethane concentration is controlled at 20~35% and is advisable, the impregnation time is 5~20min, technology is padded in employing, reach and soak into effect of uniform, enter solidifying process then, make the aqueous solution of DMF (dimethyl formamide) that polyurethane is solidified processing, DMF concentration is 20~60%, and temperature is 20~60 ℃, and setting time is 30~60min, guarantee that polyurethane resin solidifies fully in DMF solution, enter washing step then, adopt 30~50 ℃ warm water, the DMF in the cloth is all cemented out;
In step 4: utilize 70~90 ℃ toluene solution, the low density polyethylene (LDPE) in the islands-in-sea type fibre is extracted, be about to " sea " and extract out, make base cloth reach the spacial framework of similar natural leather; Reclaim toluene and polyethylene in the production process simultaneously, reduce production costs, avoid environmental pollution.
In step 5: oil, shaping process: the base cloth that makes is carried out chemical softening and the expanding HEAT SETTING is handled, make base cloth softness, plentiful and high resilience, reach the effect of natural leather;
In step 6: split, mill skin operation:, base cloth is carried out split handle according to the finished product thickness of design.According to instructions for use, utilize decorticating mill to grind skin, napping processing, promptly obtain suede.
Raw material among the present invention is all on sale on market, and wherein: ionomer is seen: " Chinese plastics "-2002 16 volume 9 phases (17-21 page or leaf) such as the existing state Li Fu plum of Zheng
Embodiment 1
With nylon (PA6): polyethylene (PE): ionomer makes the islands-in-sea type fibre of 5.0D by 40: 50: 0.1 weight ratio through spinning machine under 280 ℃ temperature, make 750g/m through non-woven fabrics apparatus 2About nonwoven fabric; Plating then is the nonwoven fabric of 2.6mm, behind the impregnation PU resin, removes PE in 80 ℃ of toluene grooves, obtains the PA/PU base cloth; With the base cloth sheet is the thick PA/PU base cloth of 0.8mm, grind then skin, the back arrangement can obtain the super fine leather of matte.
Embodiment 2
With PA6: PE: ionomer is 40: 50: 0.3, makes the islands-in-sea type fibre of 5.5D under 270 ℃ of conditions, through making 750g/m after combing, the lapping 2About nonwoven fabric, plating then is the nonwoven fabric of 2.6mm, behind the impregnation PU, removes PE in 80 ℃ of toluene grooves, the PA/PU base cloth that obtains; With the base cloth split is the thick PA/PU base cloth of 0.8mm, grind then skin, the back arrangement can obtain the super fine leather of matte.
Embodiment 3
With PA: PE: ionomer is 50: 50: 0.5, makes the islands-in-sea type fibre of 5.5D under 270 ℃ of conditions, through making 750g/m after combing, the lapping 2About nonwoven fabric, plating then be the nonwoven fabric of 2.6mm, behind the impregnation PU, removes PE in 80 ℃ of toluene grooves, obtains the PA/PU base cloth of colour; With the base cloth split is the thick PA/PU base cloth of 0.8mm, grind then skin, the back arrangement can obtain the super fine leather of matte.
Among the present invention because the effect of ionic compound, have a certain amount of crosslinked between superfine fibre " island " and " island ", prevent with the suede to be material when making products such as gloves, footwear, clothes and case and bag, the coming off of fiber in the suede, thus improve the scratch resistance of suede greatly.

Claims (2)

1. scratch resistance processing method of island ultrafine fiber suede not, realize by following steps:
(1), employing bi-component blend melt spinning obtains islands-in-sea type fibre, is " island " with nylon wherein, is " sea " with low density polyethylene (LDPE), adds the micro ion polymer simultaneously; Nylon wherein: polyethylene: the weight ratio of ionomer is 0.6~0.4: 0.4~0.6: 0.001~0.006;
(2), above-mentioned sea-island composite fiber is made nonwoven fabric through shredding, combing, lapping and acupuncture;
(3), with the nonwoven fabric impregnation polyurethane resin after the HEAT SETTING that plates, adopt the dimethyl formamide aqueous solution that polyurethane resin is solidified then, with warm water dimethyl formamide is cemented out again;
(4), utilize toluene solution that the low density polyethylene (LDPE) in the islands-in-sea type fibre is extracted, be about to " sea " and extract out, make and only contain nylon, ionomer and polyurethane resin in the base cloth;
(5), the base cloth that makes is carried out chemical softening processing, expanding typing processing successively and rubs the skin processing;
(6), the product that makes is carried out promptly getting the good suede of scratch resistance after split and mill skin and plucking handle.
2. the scratch resistance processing method of not island ultrafine fiber suede according to claim 1, wherein in step (1): to adopt the bi-component blend melt spinning to get islands-in-sea type fibre is batch mixing, extrude, spinning, oil, drawing-off, curl, typing, cut off the islands-in-sea type fibre that operation makes (4~8) D * (38~65) mm;
In step (2): utilizing nonwoven production equipment that islands-in-sea type fibre shredding, combing, lapping and acupuncture are made grammes per square metre is 380~900g/m 2, thickness is the nonwoven fabric of 1.60~4.00mm;
In step (3): with nonwoven fabric impregnation high elasticity, high moisture-proof, the polyurethane resin of high-wearing feature, polyurethane concentration is controlled at 20~35%, the impregnation time is 5~20min, technology is padded in employing, reach and soak into effect of uniform, enter solidifying process then, make the aqueous solution of dimethyl formamide that polyurethane is solidified processing, dimethyl formamide concentration is 20~60%, and temperature is 20~60 ℃, and setting time is 30~60min, guarantee that polyurethane resin solidifies fully in DMF solution, enter washing step then, adopt 30~50 ℃ warm water, the dimethyl formamide in the cloth is all cemented out;
In step (4): utilize 70~90 ℃ toluene solution, the low density polyethylene (LDPE) in the islands-in-sea type fibre is extracted, be about to " sea " and extract out, make base cloth reach the spacial framework of similar natural leather;
In step (5): oil, shaping process: the base cloth that makes is carried out chemical softening and the expanding HEAT SETTING is handled, make base cloth softness, plentiful and high resilience, reach the effect of natural leather;
In step (6): split, mill skin operation:, base cloth is carried out split handle according to the finished product thickness of design; According to instructions for use, utilize decorticating mill to grind skin, napping processing, promptly obtain suede.
CN2008100383959A 2008-05-30 2008-05-30 Scratch resistant processing method of non-figured island ultrafine fiber napped leather CN101591860B (en)

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CN102102301B (en) * 2009-12-18 2012-09-19 上海华峰超纤材料股份有限公司 Superfine fiber leather and preparation method thereof
CN102477636A (en) * 2010-11-25 2012-05-30 东丽纤维研究所(中国)有限公司 Slightly pilling fabric and production method thereof
CN102094340A (en) * 2010-11-30 2011-06-15 吴江市凌志纺织有限公司 Breathable artificial leather
CN102517923B (en) * 2011-12-05 2013-07-24 无锡双象超纤材料股份有限公司 Method for preparing ultra-soft high-resilience wet ultra-fine denier polyamide leather
CN102517924B (en) * 2011-12-05 2013-08-14 无锡双象超纤材料股份有限公司 Manufacturing method of low-viscosity superfine polyamide chopped fiber glove leather
CN102517917B (en) * 2011-12-05 2013-07-24 无锡双象超纤材料股份有限公司 Method for manufacturing superfine fiber polyamide non-woven fabric mirror surface leather
CN102587037A (en) * 2012-02-23 2012-07-18 昆山胜昱无纺布有限公司 Imitation inner leather non-woven fabric and preparation method thereof
CN102877322B (en) * 2012-10-11 2014-07-23 福建可利达合成纤维有限公司 Method for preparing suede waterborne polyurethane superfine fiber synthetic leather
CN102965967B (en) * 2012-12-13 2014-08-27 浙江元新实业有限公司 Production method of superfine fiber synthetic leather
CN104562437A (en) * 2013-10-15 2015-04-29 上海华峰超纤材料股份有限公司 High-simulation superfine fiber nylon-polyurethane base cloth and preparation method thereof
CN103981730B (en) * 2014-05-07 2015-12-09 安安(中国)有限公司 A kind of footwear moisture permeability superfine fiber chemical leather and manufacture method thereof
CN106948082B (en) * 2017-05-11 2019-02-19 平阳盛兴无纺布有限公司 High density imitation inner leather
CN109320805B (en) * 2018-09-11 2021-02-09 东莞市雄林新材料科技股份有限公司 Crystal mirror surface TPU film and preparation method thereof
WO2020214576A1 (en) * 2019-04-16 2020-10-22 Dow Global Technologies Llc Nonwoven webs, and processes for manufacturing such

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CN1970879A (en) * 2005-11-24 2007-05-30 华峰集团上海有限公司 Method for manufacturing coloured ultrathin fiber nylon polyurethane suede leather

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Address after: 201508, No. 888 Ting Wei Road, Shanghai, Jinshan District

Patentee after: Shanghai Huafeng Super Fiber Technology Co.,Ltd.

Address before: 201508, No. 888 Ting Wei Road, Shanghai, Jinshan District

Patentee before: HUAFON MICROFIBRE (SHANGHAI) Co.,Ltd.