CN117344064A - Production method for improving utilization rate of two-layer cowhide - Google Patents
Production method for improving utilization rate of two-layer cowhide Download PDFInfo
- Publication number
- CN117344064A CN117344064A CN202310288181.1A CN202310288181A CN117344064A CN 117344064 A CN117344064 A CN 117344064A CN 202310288181 A CN202310288181 A CN 202310288181A CN 117344064 A CN117344064 A CN 117344064A
- Authority
- CN
- China
- Prior art keywords
- layer
- utilization rate
- cowhide
- improving
- production method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 239000002344 surface layer Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 7
- 239000004831 Hot glue Substances 0.000 claims abstract description 6
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 6
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010409 ironing Methods 0.000 claims abstract description 4
- 239000010985 leather Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/26—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/46—Fluffing, buffing, or sanding
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/48—Roughening
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/54—Ironing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention relates to the field of cowhide treatment, and discloses a production method for improving the utilization rate of two layers of cowhides, which comprises the following main steps: s1: selecting chrome tanned/chrome-free tanned two-layer cowhide; s2: ironing to obtain a leather blank with the thickness of 1.0-1.1mm by buffing; s3: adopting a dry wire veneering method; the method comprises the following steps: the surface layer is made of polyurethane resin, the middle layer is made of solvent-free resin, and the bottom layer is made of PUR hot melt adhesive resin; s4: and (5) spraying the top light by using a slurry spraying machine. The production method for improving the utilization rate of the two-layer cowhide provided by the invention has the advantages that the utilization rate of the two-layer cowhide reaches 62.23%, the utilization rate of the old technology is only 43.20%, and the utilization rate of the new technology is improved by 19.03% compared with that of the old technology.
Description
Technical Field
The invention relates to the field of cowhide treatment, in particular to a production method for improving the utilization rate of two layers of cowhides.
Background
The two layers of cowhide are often used for manufacturing the cladding fabric of the automobile steering wheel after being processed, and some of the cowhide is cladded into an automobile seat. The two-layer cowhide is easy to cause orange peel phenomenon due to empty loose surface of the grain surface layer of the cowhide, so that the defects of the two-layer cowhide are required to be improved for improving the economic value of the two-layer cowhide, and the utilization rate of the two-layer cowhide is improved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a production method for improving the utilization rate of two layers of cowhides, which comprises the following main steps:
s1: selecting chrome tanned/chrome-free tanned two-layer cowhide;
s2: ironing to obtain a leather blank with the thickness of 1.0-1.1mm by buffing;
s3: adopting a dry wire veneering method;
the method comprises the following steps: the surface layer is made of polyurethane resin, the middle layer is made of solvent-free resin, and the bottom layer is made of PUR hot melt adhesive resin;
s4: and (5) spraying the top light by using a slurry spraying machine.
The invention has the beneficial effects that: the production method for improving the utilization rate of the two-layer cowhide provided by the invention has the advantages that the utilization rate of the two-layer cowhide reaches 62.23%, the utilization rate of the old technology is only 43.20%, and the utilization rate of the new technology is improved by 19.03% compared with that of the old technology.
Drawings
FIG. 1 is a schematic flow chart of a production method for improving the utilization rate of two layers of cowhides;
FIG. 2 is a schematic diagram of a cowhide layer prepared by a production method for improving the utilization rate of two cowhides according to the invention;
fig. 3 is a schematic diagram showing a comparison between a production method for improving the utilization rate of two layers of cowhides and the utilization rate of the old process.
In the figure: 100. a surface layer; 200. a surface layer; 300. a middle layer; 400. a bottom layer; 500. bass (r).
Detailed Description
The subject matter described herein will now be discussed with reference to example embodiments. It should be appreciated that these embodiments are discussed so that those skilled in the art will better understand and realize the subject matter described herein. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure as set forth in the specification. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
Example 1
Referring to fig. 1, in this embodiment, a production method for improving the utilization rate of two-layer cowhide is provided, which includes the following main steps:
s1: selecting chrome tanned/chrome-free tanned two-layer cowhide;
s2: ironing to obtain a leather blank with the thickness of 1.0-1.1mm by buffing;
s3: adopting a dry wire veneering method;
the method comprises the following steps: the surface layer is made of polyurethane resin, the middle layer is made of solvent-free resin, and the bottom layer is made of PUR hot melt adhesive resin;
s4: and (5) spraying the top light by using a slurry spraying machine.
In the step S3, the surface layer is coated to 70-80g/m < 2 > by using polyurethane resin slurry with excellent wear resistance;
the middle layer is coated with 90-100g/m < 2 > (the solvent-free resin (material A in the solvent-free formula: material B=1:1-1:1.3) slurry, and the solvent-free resin has high solid content, good coverage and soft and plump hand feeling;
the bottom layer is made of 50-70g/m < 2 > of PUR hot melt adhesive resin, and the PUR resin is well adhered and does not delaminate when being used as steering wheel skin.
In step S4, the spraying amount is controlled to be 2.2+/-0.2 g/sf.
Example 2
Two-layer cowhide for automotive interiors was prepared according to the production method set forth in example 1.
Two layers of cowhide were prepared according to the conventional old process, and the two layers were compared with each other in terms of utilization ratio with reference to fig. 2.
The production method for improving the utilization rate of the two-layer cowhide provided by the invention has the advantages that the utilization rate of the two-layer cowhide reaches 62.23%, the utilization rate of the old technology is only 43.20%, and the utilization rate of the new technology is improved by 19.03% compared with that of the old technology.
The embodiment of the present embodiment has been described above with reference to the accompanying drawings, but the embodiment is not limited to the above-described specific implementation, which is merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the embodiment and the scope of the protection of the claims, which fall within the protection of the embodiment.
Claims (7)
1. The production method for improving the utilization rate of the two-layer cowhide is characterized by comprising the following main steps of:
s1: selecting chrome tanned/chrome-free tanned two-layer cowhide;
s2: ironing to obtain a leather blank with the thickness of 1.0-1.1mm by buffing;
s3: adopting a dry wire veneering method;
s4: and (5) spraying the top light by using a slurry spraying machine.
2. The production method for improving the utilization rate of the two-layer cowhide according to claim 1, wherein in the step S3, polyurethane resin is selected as the surface layer, solvent-free resin is selected as the middle layer, and PUR hot melt adhesive resin is selected as the bottom layer.
3. The method for improving the utilization rate of the two-layer cowhide according to claim 2, wherein the surface layer is coated with 70-80g/m2 of polyurethane resin slurry with excellent wear resistance.
4. The method for improving the utilization rate of the two-layer cowhide according to claim 2, wherein the middle layer is coated with 90-100g/m2 of solvent-free resin slurry.
5. The method for improving the utilization rate of two-layer cowhide according to claim 4, wherein the solvent-free resin comprises a material A and a material B, and the material A is: b material = 1:1-1:1.3.
6. the method for improving the utilization rate of the two-layer cowhide according to claim 2, wherein the bottom layer is made of 50-70g/m2 of PUR hot melt adhesive resin.
7. The method according to claim 1, wherein the spraying amount is controlled to be 2.2.+ -. 0.2g/sf in the step S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310288181.1A CN117344064A (en) | 2023-03-23 | 2023-03-23 | Production method for improving utilization rate of two-layer cowhide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310288181.1A CN117344064A (en) | 2023-03-23 | 2023-03-23 | Production method for improving utilization rate of two-layer cowhide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117344064A true CN117344064A (en) | 2024-01-05 |
Family
ID=89354602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310288181.1A Pending CN117344064A (en) | 2023-03-23 | 2023-03-23 | Production method for improving utilization rate of two-layer cowhide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117344064A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167840A (en) * | 2016-08-18 | 2016-11-30 | 明新旭腾新材料股份有限公司 | A kind of production technology prepared without chrome tanning double-layer leather |
| CN206344514U (en) * | 2016-12-20 | 2017-07-21 | 辽宁富新新材料有限公司 | Resistance to sweat wipes two layers of automobile skin |
| CN107700229A (en) * | 2017-11-03 | 2018-02-16 | 浙江瑞普实业有限公司 | The research and development of water-based no-solvent polyurethane ultrafine fiber simulation leather and production method |
| CN114108335A (en) * | 2021-12-07 | 2022-03-01 | 万华化学集团股份有限公司 | Water-based dry-adhered double-layer leather with transfer film and preparation method thereof |
-
2023
- 2023-03-23 CN CN202310288181.1A patent/CN117344064A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167840A (en) * | 2016-08-18 | 2016-11-30 | 明新旭腾新材料股份有限公司 | A kind of production technology prepared without chrome tanning double-layer leather |
| CN206344514U (en) * | 2016-12-20 | 2017-07-21 | 辽宁富新新材料有限公司 | Resistance to sweat wipes two layers of automobile skin |
| CN107700229A (en) * | 2017-11-03 | 2018-02-16 | 浙江瑞普实业有限公司 | The research and development of water-based no-solvent polyurethane ultrafine fiber simulation leather and production method |
| CN114108335A (en) * | 2021-12-07 | 2022-03-01 | 万华化学集团股份有限公司 | Water-based dry-adhered double-layer leather with transfer film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 马兴元等: "合成革化学与工艺学", 30 November 2015, 中国轻工业出版社, pages: 153 - 154 * |
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