CN102517921B - Method for producing refractive PU synthetic leather - Google Patents

Method for producing refractive PU synthetic leather Download PDF

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Publication number
CN102517921B
CN102517921B CN201210003079.4A CN201210003079A CN102517921B CN 102517921 B CN102517921 B CN 102517921B CN 201210003079 A CN201210003079 A CN 201210003079A CN 102517921 B CN102517921 B CN 102517921B
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synthetic leather
release liners
resin
finished product
refractive
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CN102517921A (en
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许紫峰
陈武奎
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FUJIAN LANFENG LEATHER MAKING Co Ltd
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FUJIAN LANFENG LEATHER MAKING Co Ltd
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Abstract

The invention relates to a method for producing polyurethane (PU) synthetic leather, in particular to a method for producing refractive PU synthetic leather. According to the method for producing the refractive PU synthetic leather, the prepared refractive PU synthetic leather has exquisite grains, soft glossiness, flat shape and good reflective glossiness. The method comprises the following steps of: selecting materials, conveying release paper to a No. 1 coating head, coating a layer of surface material, conveying the release paper to a No. 2 coating head, coating a layer of bottom material on the surface material, preheating the treated release paper to combine a base surface material and the release paper coated with the surface material and the bottom material, drying in an oven to obtain a dry semi-finished product, embossing the dry semi-finished product through a pair of embossing rollers, cooling the embossed semi-finished product, coiling, and thus obtaining a finished product.

Description

A kind of production method of refractive PU synthetic leather
Technical field
The present invention relates to a kind of production method of PU synthetic leather, especially relate to a kind of production method of refractive PU synthetic leather.
Background technology
Owing to being subject to the reinforcement of reinforcement, particularly environmental protection consciousness of the restriction of natural conditions and the countries in the world consciousness of watching for animals, minimizing year by year of the use of natural leather.PU synthetic leather has advantages of that ABRASION RESISTANCE is strong, intensity and good toughness, oil resistance is good, cutting rate is high, become the best substitute of natural leather, synthetic leather is more and more extensive in field application such as clothing leather, sport footwear, sofa, case and bag, has made up to a great extent the impact bringing to curriery in short supply of Animal Skin.
The production craft step of conventional P U synthetic leather is: (1) preparation polyurethane slurry: the viscosity of slurry is had relatively high expectations, generally should be controlled at 7000-9000Pas, the prescription of slurry is PU resin, dimethyl formamide, wood powder, and wherein, the content of dimethyl formamide is controlled between 10%～15%; (2) base cloth immersion is processed: base cloth enters soaking pit through magazine, then the moisture in base cloth is extracted, and then base cloth is scalded half-dried; (3) apply and solidify: treated base cloth, by coating platform, adopt painting cutter cladding process that slurry mixed liquor is coated on base cloth equably, the solidification liquid in coagulating basin is made up of water and dimethyl formamide, and the content of dimethyl formamide is generally 20%～25%; (4) wash, dry, batch.
The PU synthetic leather that adopts the production technology of traditional PU synthetic leather to make exists that glossiness is poor, refractive power effect is bad, the shortcomings such as lines is unintelligible, therefore, exploitation glossiness is good, refractive power is effective and lines is clear, and the PU synthetic leather that gives the multi-level aesthetic feeling of people on appearance sense organ has become the inexorable trend of market development.
Summary of the invention
Therefore, for the problems referred to above, the invention provides a kind of production method of refractive PU synthetic leather, the refractive PU synthetic leather lines exquisiteness that makes, glossiness is soft, moulding is smooth, specular gloss is good.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of production method of refractive PU synthetic leather, and comprise and it is characterized in that the forming step of PU synthetic leather, the forming step of described PU synthetic leather comprises:
(1) selection of material: comprise the selection of release liners, knurling rolls, base, resin, described release liners is provided with lines, described knurling rolls are provided with lines, lines on lines and knurling rolls in described release liners should match, base is selected wet method BASS, and that resin should be selected is high temperature resistant, cold-resistant, the dry embossed resin of hydrolysis;
(2) by the selection of above release liners, resin, base, release liners is passed through to a dispense tip, the fabric that coating one deck viscosity is 2500～3000cps, the PU resin that fabric is 100:60～80:10～15 by weight ratio: dimethyl formamide: toner forms, it is that 30-35%, 100% modulus are the polyurethane resin of 50-70kg/cm2 poor heat resistance that PU resin is selected solid content, its heat resisting temperature, at 160～180 DEG C, makes the release liners that scribbles precoat;
(3) release liners that scribbles precoat is passed through to No. two dispense tips, on precoat, be coated with the bed material that one deck viscosity is 3000～5000cps, the PU resin that bed material is 100:50～70:10～15 by weight ratio: dimethyl formamide: toner forms, it is that 30-35%, 100% modulus are the polyurethane resin of 50-70kg/cm2 poor heat resistance that PU resin is selected solid content, and its heat resisting temperature is at 160～180 DEG C;
(4) release liners of step (3) being processed is carried out the pre-heat treatment, and base cloth is combined with bed material, makes dry type semi-finished product through oven for drying processing;
(5) dry type semi-finished product are carried out to embossed by a pair of knurling rolls, its surface of the knurling rolls of a side adjacent with fabric is provided with the effective reflecting feel lines of refractive power, and in these knurling rolls, be connected with conduction oil and make its surface temperature between 180～210 DEG C, make finished product by carrying out rolling after cooling the semi-finished product after embossed.
Further improve and be: the oven temperature in described step (4) is 100～110 DEG C.
Further improve and be: cooling in described step (5) is to use recirculated cooling water to carry out cooling, cooling temperature to be controlled at 15～20 DEG C.
By adopting aforementioned techniques scheme, the invention has the beneficial effects as follows: the present invention is by changing the proportioning of precoat and initial bed prescription, the refractive PU synthetic leather lines exquisiteness that makes, glossiness is soft, moulding is smooth, specular gloss is good, on appearance sense organ, give the multi-level aesthetic feeling of people, compared with the preparation method of its production technology and traditional PU synthetic leather, step is simpler, and production effect is better, and production efficiency is higher.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to specific embodiment, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
Embodiments of the invention are:
A production method for refractive PU synthetic leather, comprises and it is characterized in that the forming step of PU synthetic leather, and the forming step of described PU synthetic leather comprises:
(1) selection of material: comprise the selection of release liners, knurling rolls, base, resin, described release liners is provided with lines, described knurling rolls are provided with lines, lines on lines and knurling rolls in described release liners should match, base is selected wet method BASS, and resin should be selected to resist cold, the dry embossed resin of hydrolysis;
(2), by preparation and the selection of above release liners, resin, base, release liners, by a dispense tip, is coated with to the fabric that one deck viscosity is 2750cps, the PU resin that fabric is 100:70:12 by weight ratio: dimethyl formamide: toner forms; It is that 35%, 100% modulus is the polyurethane resin of 60kg/cm2 poor heat resistance that PU resin is selected solid content, and its heat resisting temperature, between 160 ~ 180 DEG C, makes the release liners that scribbles fabric;
(3) release liners that scribbles fabric is passed through to No. two dispense tips, on precoat, be coated with the bed material that one deck viscosity is 4000cps, the PU resin that bed material is 100:60:13 by weight ratio: dimethyl formamide: toner forms;
(4) release liners of step (3) being processed is carried out the pre-heat treatment, and base cloth is combined with bed material, makes dry type semi-finished product through oven for drying processing, and oven temperature is made as 105 DEG C;
(5) dry type semi-finished product are carried out to embossed by a pair of knurling rolls, its surface of the knurling rolls of a side adjacent with fabric is provided with the effective reflecting feel lines of refractive power, in these knurling rolls, be connected with conduction oil, control the temperature on knurling rolls surface at 195 DEG C, make finished product by carrying out rolling after cooling the semi-finished product after embossed, adopt recirculated cooling water to carry out cooling, cooling temperature and be controlled at 17 DEG C.
Wherein, in step (2), the viscosity of fabric can be 2500～3000cps, the formula PU resin of fabric: dimethyl formamide: the weight ratio of toner can be 100:60～80:10～15; In step (3), the viscosity of bed material can be 3000～5000cps, the formula PU resin of bed material: dimethyl formamide: the weight ratio of toner can be 100:50～70:10～15: the PU resin in step (2) and (3) selects that solid content is 30～35%, 100% modulus is the polyurethane resin of 50～70kg/cm2 poor heat resistance, and its heat resisting temperature is at 160～180 DEG C; In step (4), oven temperature can be 100～110 DEG C; In step (5), the temperature on knurling rolls surface is controlled at 180～210 DEG C, and the temperature of cooling water is controlled at 15～20 DEG C.
Temperature, the weight ratio of various materials, the range of viscosities relating in each concrete steps is above actually the feasible and desirable scope that limits, use arbitrary numerical value in each span can realize the object of invention, simultaneously, the equipment relating in each processing step is as baking oven, knurling rolls, the first-class genus known technology of coating, so its structure is not described in detail.
The present invention is by changing the proportioning of precoat and initial bed prescription, the glossiness of the refractive PU synthetic leather making and refractive power effect are all better, lines is clear, on appearance sense organ, give people multi-level aesthetic feeling, compared with the preparation method of its production technology and traditional PU synthetic leather, step is simpler, and production effect is better, and production efficiency is higher.
Above record, only, for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.

Claims (3)

1. a production method for refractive PU synthetic leather, comprises and it is characterized in that the forming step of Synthetic Leather, and the forming step of described Synthetic Leather comprises:
(1) selection of material: comprise the selection of release liners, knurling rolls, base, resin, described release liners is provided with lines, described knurling rolls are provided with lines, lines on lines and knurling rolls in described release liners should match, base is selected wet method BASE, and resin should be selected to resist cold, the dry embossed resin of hydrolysis;
(2) by the selection of above release liners, resin, base, release liners is passed through to a dispense tip, the fabric that coating one deck viscosity is 2500～3000cps, the polyurethane resin that fabric is 100:60～80:10～15 by weight ratio: dimethyl formamide: toner forms, it is that 30-35%, 100% modulus are the polyurethane resin of 50-70kg/cm2 poor heat resistance that polyurethane resin is selected solid content, its heat resisting temperature, at 160～180 DEG C, makes the release liners that scribbles precoat;
(3) release liners that scribbles precoat is passed through to No. two dispense tips, on precoat, be coated with the bed material that one deck viscosity is 3000～5000cps, the polyurethane resin that bed material is 100:50～70:10～15 by weight ratio: dimethyl formamide: toner forms, it is that 30-35%, 100% modulus are the polyurethane resin of 50-70kg/cm2 poor heat resistance that polyurethane resin is selected solid content, and its heat resisting temperature is at 160～180 DEG C;
(4) release liners of step (3) being processed is carried out the pre-heat treatment, and base cloth is combined with bed material, makes dry type semi-finished product through oven for drying processing;
(5) dry type semi-finished product are carried out to embossed by a pair of knurling rolls, its surface of the knurling rolls of a side adjacent with fabric is provided with the effective reflecting feel lines of refractive power, and in these knurling rolls, be connected with conduction oil and make its surface temperature between 180～210 DEG C, make finished product by carrying out rolling after cooling the semi-finished product after embossed.
2. the production method of a kind of refractive PU synthetic leather according to claim 1, is characterized in that: the oven temperature in described step (4) is 100～110 DEG C.
3. the production method of a kind of refractive PU synthetic leather according to claim 1, is characterized in that: cooling in described step (5) is to use recirculated cooling water to carry out cooling, cooling temperature to be controlled at 15～20 DEG C.
CN201210003079.4A 2012-01-06 2012-01-06 Method for producing refractive PU synthetic leather Active CN102517921B (en)

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Publication number Priority date Publication date Assignee Title
CN108978254B (en) * 2018-08-10 2020-10-30 福建兰峰制革有限公司 Production method of moisture-cured cold-resistant synthetic leather
CN111364255A (en) * 2020-04-03 2020-07-03 泉州梵兜服装有限公司 Velvet PU leather with anti-counterfeiting mark and processing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1966265A (en) * 2006-10-27 2007-05-23 海宁杰玛高科涂层织物有限公司 Preparation method of inner decoration material for automobile
CN101525846A (en) * 2009-03-27 2009-09-09 福建兰峰制革有限公司 Method for producing crease-free leathers
CN101545211A (en) * 2009-03-27 2009-09-30 福建兰峰制革有限公司 Method for producing emulational leather
CN102234937A (en) * 2010-05-07 2011-11-09 福建兰峰制革有限公司 Production process of top layer leather-simulated super-fibre synthetic leather

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3196139B2 (en) * 1998-11-25 2001-08-06 株式会社市金テクニカル Manufacturing method of artificial leather

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1966265A (en) * 2006-10-27 2007-05-23 海宁杰玛高科涂层织物有限公司 Preparation method of inner decoration material for automobile
CN101525846A (en) * 2009-03-27 2009-09-09 福建兰峰制革有限公司 Method for producing crease-free leathers
CN101545211A (en) * 2009-03-27 2009-09-30 福建兰峰制革有限公司 Method for producing emulational leather
CN102234937A (en) * 2010-05-07 2011-11-09 福建兰峰制革有限公司 Production process of top layer leather-simulated super-fibre synthetic leather

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2000-160484A 2000.06.13

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