CN109706742A - The preparation method of PU breathable leather - Google Patents

The preparation method of PU breathable leather Download PDF

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Publication number
CN109706742A
CN109706742A CN201811061837.1A CN201811061837A CN109706742A CN 109706742 A CN109706742 A CN 109706742A CN 201811061837 A CN201811061837 A CN 201811061837A CN 109706742 A CN109706742 A CN 109706742A
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CN
China
Prior art keywords
parts
leather
preparation
woven fabric
capstock
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Pending
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CN201811061837.1A
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Chinese (zh)
Inventor
朱小强
吕华波
柳红毅
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XUCHUAN CHEMICAL (SUZHOU) CO Ltd
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XUCHUAN CHEMICAL (SUZHOU) CO Ltd
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Priority to CN201811061837.1A priority Critical patent/CN109706742A/en
Publication of CN109706742A publication Critical patent/CN109706742A/en
Pending legal-status Critical Current

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  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The invention discloses the preparation methods of PU breathable leather, belong to breathable leather technical field, the preparation method of PU breathable leather, comprising the following steps: 1) prepare capstock capstock and comprise the following components in parts by weight: surface layer resin is 100 parts, DMF is 40~45 parts, MEK is 40~45 parts；2) capstock mixed liquor is coated in DE-7 release paper surface, the paper after coating is put into baking oven drying, mixed liquor is dried and is formed a film；3) then layered material is prepared；4) will then layered material mixed liquor be coated in surface layer film on, by the paper after coating be put into baking oven be dried to it is half-dried；5) woven fabric cloth is combined on following layer；6) release paper of compound woven fabric cloth is put into baking oven drying；7) release paper and woven fabric cloth are separated, surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；8) microfiber leather is put into rub and rubs line in line roller machine, obtain PU breathable leather.The preparation method of PU breathable leather of the invention rubs line using special resin veneer, and leather is made to have ventilative absorbent function.

Description

The preparation method of PU breathable leather
Technical field
The invention belongs to breathable leather technical fields, and in particular to the preparation method of PU breathable leather.
Background technique
Currently, the leather annual output in China is close to the 1/4 of the world, it is the world that the yield of shoes, which is even more more than half of the whole world, Upper maximum leather producing country, but be not that leather is made the country prosperous, in the process strided forward from leather big country to leather power, seek leather production The development trend in industry future undoubtedly has the significance of guiding performance.
The limits throughput of natural leather, and the environmental and ecological consciousness of people is increasingly enhanced, but traditional PU leather is universal There are air-locked defects, punch providing holes by process hides post laser to improve the PU breathable leather of gas permeability, technique still compares It is more complex, it needs to increase equipment and investment.
Summary of the invention
Goal of the invention: of the existing technology in order to solve the problems, such as, the present invention provides the preparation method of PU breathable leather, makes to remove from office With good ventilative absorbent function.
Technical solution: in order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:
The preparation method of PU breathable leather, comprising the following steps:
1) capstock is prepared
Capstock comprises the following components in parts by weight: surface layer resin is 100 parts, DMF is 40~45 parts, MEK is 40~45 Part；
2) capstock mixed liquor is coated in DE-7 release paper surface, the paper after coating is put into baking oven drying, will be mixed Liquid drying film forming；
3) then layered material is prepared
Then layered material comprises the following components in parts by weight: 100 parts of intermediate layer resin, DMF are 20 parts, MEK is 25 parts；
4) will then layered material mixed liquor be coated in surface layer film on, by the paper after coating be put into baking oven be dried to it is half-dried；
5) woven fabric cloth is combined on following layer；
6) release paper of compound woven fabric cloth is put into baking oven drying；
7) release paper and woven fabric cloth are separated, surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；
8) microfiber leather is put into rub and rubs line in line roller machine, obtain PU breathable leather.
In step 1), being configured to capstock viscosity of mixed liquid according to said components is 2000~2500CPS.
In step 1), surface layer resin XCS-2083TQ.
In step 3), following layer resin is XCA-4120TQ.
In step 3), being configured to intermediate layered material viscosity of mixed liquid according to said components is 3000~3500CPS.
In step 2), the drying temperature is 80~120 DEG C；In step 4), 80~100 DEG C of the drying temperature； In step 6), 120~130 degrees Celsius of the drying temperature.
In step 2) and step 4), coating thickness is 15.
The utility model has the advantages that compared with prior art, the preparation method of PU breathable leather of the invention, using special resin veneer, Line is rubbed, makes leather that there is ventilative absorbent function, common shoe lining leather is not breathed freely aqueous functional, wears uncomfortable, and the present invention can be with Solve this problem.
Specific embodiment
Below with reference to specific implementation example, the present invention is further described.
The preparation method of PU breathable leather, comprising the following steps:
1) capstock is prepared
Capstock comprises the following components in parts by weight: surface layer resin is 100 parts, DMF is 40~45 parts, MEK is 40~45 Part, being configured to capstock viscosity of mixed liquid according to said components is 2000~2500CPS；
2) capstock mixed liquor is coated in DE-7 release paper surface, coating thickness 15, the paper after coating is put into baking Case drying, mixed liquor is dried and is formed a film, and 80~120 DEG C of drying temperature；
3) then layered material is prepared
Then layered material comprises the following components in parts by weight: 100 parts of intermediate layer resin, DMF are 20 parts, MEK is 25 parts；According to It is 3000~3500CPS that said components, which are configured to intermediate layered material viscosity of mixed liquid,；
4) it will then layered material mixed liquor be coated on surface layer film, coating thickness 15, the paper after coating is put into baking oven and is dried It is extremely half-dried, 80~100 DEG C of drying temperature；
5) woven fabric cloth is combined on following layer；
6) release paper of compound woven fabric cloth is put into baking oven to dry, 120~130 degrees Celsius of drying temperature；
7) release paper and woven fabric cloth are separated.Surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；
8) it by microfiber leather every 30 meters one, is put into and rubs in line roller machine: rubbing the line time 15 minutes.
In step 1), surface layer resin XCS-2083TQ.In step 3), following layer resin is XCA-4120TQ.XCS- 2083TQ and XCA-4120TQ producer is Xuchuan Chemical (Suzhou) Co., Ltd..
Embodiment 1
The preparation method of PU breathable leather, comprising the following steps:
1) capstock is prepared
Capstock comprises the following components in parts by weight: surface layer resin is 100 parts, DMF is 40 parts, MEK is 45 parts, according to upper Stating component and being configured to capstock viscosity of mixed liquid is 2000CPS；
2) capstock mixed liquor is coated in DE-7 release paper surface, coating thickness 15, the paper after coating is put into baking Case drying, mixed liquor is dried and is formed a film, and 120 DEG C of drying temperature；
3) then layered material is prepared
Then layered material comprises the following components in parts by weight: 100 parts of intermediate layer resin, DMF are 20 parts, MEK is 25 parts；According to It is 3000CPS that said components, which are configured to intermediate layered material viscosity of mixed liquid,；
4) it will then layered material mixed liquor be coated on surface layer film, coating thickness 15, the paper after coating is put into baking oven and is dried It is extremely half-dried, 80 DEG C of drying temperature；
5) woven fabric cloth is combined on following layer；
6) release paper of compound woven fabric cloth is put into baking oven to dry, 120 degrees Celsius of drying temperature；
7) release paper and woven fabric cloth are separated.Surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；
8) it by microfiber leather every 30 meters one, is put into and rubs in line roller machine: rubbing the line time 15 minutes.
Embodiment 2
The preparation method of PU breathable leather, comprising the following steps:
1) capstock is prepared
Capstock comprises the following components in parts by weight: surface layer resin is 100 parts, DMF is 42 parts, MEK is 43 parts, according to upper Stating component and being configured to capstock viscosity of mixed liquid is 2200CPS；
2) capstock mixed liquor is coated in DE-7 release paper surface, coating thickness 15, the paper after coating is put into baking Case drying, mixed liquor is dried and is formed a film, and 100 DEG C of drying temperature；
3) then layered material is prepared
Then layered material comprises the following components in parts by weight: 100 parts of intermediate layer resin, DMF are 20 parts, MEK is 25 parts；According to It is 3200CPS that said components, which are configured to intermediate layered material viscosity of mixed liquid,；
4) it will then layered material mixed liquor be coated on surface layer film, coating thickness 15, the paper after coating is put into baking oven and is dried It is extremely half-dried, 90 DEG C of drying temperature；
5) woven fabric cloth is combined on following layer；
6) release paper of compound woven fabric cloth is put into baking oven to dry, 125 degrees Celsius of drying temperature；
7) release paper and woven fabric cloth are separated.Surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；
8) it by microfiber leather every 30 meters one, is put into and rubs in line roller machine: rubbing the line time 15 minutes.
Embodiment 3
The preparation method of PU breathable leather, comprising the following steps:
1) capstock is prepared
Capstock comprises the following components in parts by weight: surface layer resin is 100 parts, DMF is 45 parts, MEK is 45 parts, according to upper Stating component and being configured to capstock viscosity of mixed liquid is 2500CPS；
2) capstock mixed liquor is coated in DE-7 release paper surface, coating thickness 15, the paper after coating is put into baking Case drying, mixed liquor is dried and is formed a film, and 120 DEG C of drying temperature；
3) then layered material is prepared
Then layered material comprises the following components in parts by weight: 100 parts of intermediate layer resin, DMF are 20 parts, MEK is 25 parts；According to It is 3500CPS that said components, which are configured to intermediate layered material viscosity of mixed liquid,；
4) it will then layered material mixed liquor be coated on surface layer film, coating thickness 15, the paper after coating is put into baking oven and is dried It is extremely half-dried, 100 DEG C of drying temperature；
5) woven fabric cloth is combined on following layer；
6) release paper of compound woven fabric cloth is put into baking oven to dry, 130 degrees Celsius of drying temperature；
7) release paper and woven fabric cloth are separated.Surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；
8) it by microfiber leather every 30 meters one, is put into and rubs in line roller machine: rubbing the line time 15 minutes.
Test case
PU breathable leather prepared by embodiment 1-3, carries out absorbent time test respectively and air-moisture-permeable measures examination, common to set Rouge does resultant Leather water and cannot penetrate into the back side, the air-moisture-permeable amount of every square metre daily (for 24 hours), 600g/ (m2* d) or so, swash Time time of the resultant Leather water that light drilling technology is done from front thoroughly to the back side is 15 seconds；Every square metre daily (for 24 hours) ventilative Vapor transfer rate is 1680g/ (m2* d) left and right, the resultant Leather water that water-absorbing resin suction is done are 6 seconds from positive time time thoroughly to the back side, Every square metre daily (for 24 hours) of air-moisture-permeable amount 3730g/ (m2* d) or so.

Claims (7)

  1. The preparation method of 1.PU breathable leather, it is characterised in that: the following steps are included:
    1) capstock is prepared
    Capstock comprises the following components in parts by weight: surface layer resin is 100 parts, DMF is 40~45 parts, MEK is 40~45 parts；
    2) capstock mixed liquor is coated in DE-7 release paper surface, the paper after coating is put into baking oven drying, mixed liquor is dried Dry film forming；
    3) then layered material is prepared
    Then layered material comprises the following components in parts by weight: 100 parts of intermediate layer resin, DMF are 20 parts, MEK is 25 parts；
    4) will then layered material mixed liquor be coated in surface layer film on, by the paper after coating be put into baking oven be dried to it is half-dried；
    5) woven fabric cloth is combined on following layer；
    6) release paper of compound woven fabric cloth is put into baking oven drying；
    7) release paper and woven fabric cloth are separated, surface layer is bonded on woven fabric cloth by following layer, obtains microfiber leather；
    8) microfiber leather is put into rub and rubs line in line roller machine, obtain PU breathable leather.
  2. 2. the preparation method of PU breathable leather according to claim 1, it is characterised in that: in step 1), according to said components Being configured to capstock viscosity of mixed liquid is 2000~2500CPS.
  3. 3. the preparation method of PU breathable leather according to claim 1, it is characterised in that: in step 1), surface layer resin is XCS-2083TQ。
  4. 4. the preparation method of PU breathable leather according to claim 1, it is characterised in that: in step 3), following layer resin is XCA-4120TQ。
  5. 5. the preparation method of PU breathable leather according to claim 1, it is characterised in that: in step 3), according to said components Being configured to intermediate layered material viscosity of mixed liquid is 3000~3500CPS.
  6. 6. the preparation method of PU breathable leather according to claim 1, it is characterised in that: in step 2), the drying temperature Degree is 80~120 DEG C；In step 4), 80~100 DEG C of the drying temperature；In step 6), the drying temperature 120~ 130 degrees Celsius.
  7. 7. the preparation method of PU breathable leather according to claim 1, it is characterised in that: in step 2) and step 4), coating Thickness is 15.
CN201811061837.1A 2018-09-12 2018-09-12 The preparation method of PU breathable leather Pending CN109706742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201811061837.1A CN109706742A (en) 2018-09-12 2018-09-12 The preparation method of PU breathable leather

Publications (1)

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CN109706742A true CN109706742A (en) 2019-05-03

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102301A (en) * 2009-12-18 2011-06-22 上海华峰超纤材料股份有限公司 Superfine fiber leather and preparation method thereof
CN102181036A (en) * 2010-10-20 2011-09-14 上海汇得化工有限公司 Breathable water-absorption PU (polyurethane) resin for shoes
CN103898773A (en) * 2014-03-25 2014-07-02 浙江申腾涂层织物有限公司 Production method of breathable leather

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102301A (en) * 2009-12-18 2011-06-22 上海华峰超纤材料股份有限公司 Superfine fiber leather and preparation method thereof
CN102181036A (en) * 2010-10-20 2011-09-14 上海汇得化工有限公司 Breathable water-absorption PU (polyurethane) resin for shoes
CN103898773A (en) * 2014-03-25 2014-07-02 浙江申腾涂层织物有限公司 Production method of breathable leather

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Application publication date: 20190503