CN104294669B - A kind of production method of low DMF content environmental protection furniture sofa leather - Google Patents
A kind of production method of low DMF content environmental protection furniture sofa leather Download PDFInfo
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- CN104294669B CN104294669B CN201410523680.5A CN201410523680A CN104294669B CN 104294669 B CN104294669 B CN 104294669B CN 201410523680 A CN201410523680 A CN 201410523680A CN 104294669 B CN104294669 B CN 104294669B
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- epithelium
- leather
- temperature
- preheating
- surface layer
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/24—Layered products comprising a layer of synthetic resin characterised by the use of special additives using solvents or swelling agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses the production method of a kind of low DMF content environmental protection furniture sofa leather, including: modulus is 70 100 Kg/cm by (1)2The slurry of polyurethane resin and solvent butanone composition be coated in release paper and dry to obtain surface layer epithelium；(2) it is 25 35 Kg/cm by modulus2The slurry of polyurethane resin and solvent butanone composition be coated on surface layer formation adhesive linkage epithelium；(3) epithelium is preheating to 140 DEG C 150 DEG C；(4) by the epithelium after preheating and the crust leather laminated roller laminating of preheated to 170 DEG C 180 DEG C, carry out washing, dry and rub the post processing aided processes such as stricture of vagina after drying again and obtain sofa artificial leather.The solvent of the present invention is butanone, and uses absolutely dry patch surfacing process, not only makes polyurethane epithelium fully dry, and as much as possible for the DMF of residual in wet method crust leather drying is discharged, its residual rate ＜ 200ppm；Make product DMF content less than 50ppm.
Description
Technical field
The present invention relates to a kind of Synthetic Leather, the life of a kind of low DMF content environmental protection furniture sofa leather
Product method.
Technical background
The export volume of China's sofa industry began to exceed Italy of exported country the biggest in the world from 2006, becomes sofa and goes out
The fastest-rising country of mouth, from the production of sofa, consumption to outlet, China is all the world's strongest nation.Quickly sending out of sofa industry
Exhibition has driven that sofa Synthetic Leather is manufacturing to be developed rapidly, through the development of nearly 50 years, and its production Technology
Reach its maturity, consistent, instead of the natural leather of inadequate resource the most in a large number and become sofa main body materials, husky at furniture
Send out industry to be widely used.Meanwhile, along with expanding economy and the continuous enhancing of social environment consciousness, market is to synthetic leather product
Functional and eco-environmental prote requirement improve constantly, people are more and more higher, especially to sofa artificial leather product requirements
Demand for environment-friendly type sofa artificial leather is increasing.But presently used sofa artificial leather is all with polrvinyl chloride (PVC), poly-amino
Formic acid esters (PU) is made, and produces gas and the dimethyl formyl Han DMF(of substantial amounts of benzoate in process of production
Amine) waste water, the health of people and environment are caused the biggest injury, and goods to there is ageing properties poor, not hydrolysis, resistance to
The deficiencies such as mill property difference.Can not life-time service in the sun.
Summary of the invention
For solving above-mentioned the deficiencies in the prior art, the invention provides a kind of low DMF content environmental protection furniture sofa leather and produce
Method, can effectively control the problem that polyurethane rings guaranteed cost is unstable.
The present invention solves technical problem, adopts the following technical scheme that
The production method of a kind of low DMF content environmental protection furniture sofa leather, comprises the following steps:
(1) it is 70-100 Kg/cm by modulus2The slurry of polyurethane resin and solvent butanone composition be coated on release paper
On, carry out drying to obtain surface layer epithelium in the baking oven that temperature is 140 DEG C-155 DEG C；
(2) it is 25-35 Kg/cm by modulus2The slurry of polyurethane resin and solvent butanone composition be coated in (1)
Form adhesive linkage epithelium on surface layer epithelium, and carry out drying to obtain epithelium in two baking ovens that temperature is 140 DEG C-155 DEG C；
(3) epithelium is preheating to 140 DEG C-150 DEG C；
(4) by the epithelium after preheating and the laminating of the preheated laminated roller of the crust leather to 170 DEG C-180 DEG C, it is 140 in temperature
Carry out washing, dry and rub the post processing aided processes such as stricture of vagina again after three baking ovens of DEG C-155 DEG C are dried and obtain sofa artificial leather.
Further, described step (2) is provided with in two baking ovens aerator and air-introduced machine, the frequency of described aerator >=
50Hz, the frequency >=35Hz of air-introduced machine.
Further, being additionally provided with intermediate layer in the middle of described surface layer epithelium and adhesive linkage epithelium, described intervening layers is in surface layer
Dry in two baking ovens that temperature is 140 DEG C-155 DEG C after on epithelium；Then after being coated with adhesive linkage slurry in temperature it is
Three baking ovens of 140 DEG C-155 DEG C carry out drying to obtain epithelium；Finally will be preheating to the epithelium of 140 DEG C-150 DEG C and be preheating to 170
The crust leather laminated roller laminating of DEG C-180 DEG C, dries in four baking ovens that temperature is 120 DEG C-140 DEG C.
The present invention changes the solvent DMF of surface layer epithelium Yu adhesive linkage epithelium into butanone during polyurethane production, thus
Reduce using and its harm to human body Yu environment of solvent DMF.Then absolutely dry veneer is used to fit in the course of processing,
Not only make epithelium fully dry, and as much as possible for the DMF of residual in wet method crust leather drying is discharged, its residual rate ＜
200ppm；Washing finally by open soaper, the padding machine through 3 road 5bar pressure dries, strengthens the water displacement with DMF, and use follows
Ring water, and regularly replace clear water, then guarantee that final products DMF content is less than through rubbing the post processing aided processes such as stricture of vagina continuously
50ppm。
The present invention uses absolutely dry patch surfacing process, surface layer epithelium, adhesive linkage epithelium and crust leather is fitted, each step
Drying temperature is 140 DEG C-155 DEG C, to reach or close to the boiling point of butanone solvent so that it is fully volatilize；And by improving drum
Air quantity, absorbing quantity make butanone solvent be sufficiently displaced from air, make epithelium be in the air ambient of relative clean, so that epithelium
It is substantially free of DMF.
Crust leather carrying out 170 DEG C-180 DEG C preheatings simultaneously, on the one hand makes crust leather preheat, under high temperature, veneer viscosity is good；Another
Aspect is the preheating temperature boiling point more than DMF, thus accelerates the volatilization of the DMF of residual in crust leather.
Compared with the prior art, beneficial effects of the present invention is embodied in:
1, in the sofa artificial leather product that the present invention is prepared by absolutely dry patch surfacing process, DMF content is less than 50ppm, much smaller than one
As the DMF content of product, and far below the content requirement of DMF 1000ppm in REACH regulation high attention rate material,
2, the present invention low DMF environmental protection furniture sofa leather production technology is simple, low cost, and product belongs to environmentally friendly, and produces
The third dimension of patterns of product is strong, leather surface thickness is uniform, glossiness is consistent, soft plentiful, the free from extraneous odour of feel.
Detailed description of the invention
Embodiment 1
The production method of a kind of low DMF content environmental protection furniture sofa leather, comprises the following steps:
(1) it is 70Kg/cm by modulus2The slurry that forms of polyurethane resin 90 parts and solvent butanone 60 parts be coated on release
On paper, carry out drying to obtain surface layer epithelium in the baking oven that temperature is 155 DEG C；
(2) it is 25 Kg/cm by modulus2The slurry that forms of polyurethane resin 90 parts and solvent butanone 30 parts be coated on (1)
In surface layer epithelium on form adhesive linkage epithelium, and carry out drying to obtain epithelium in two baking ovens that temperature is 155 DEG C；In two baking ovens
It is provided with aerator and air-introduced machine, the frequency >=50Hz of described aerator, the frequency >=35Hz of air-introduced machine；
(3) epithelium is preheating to 150 DEG C；
(4) by the epithelium after preheating and the laminating of the preheated laminated roller of the crust leather to 180 DEG C, in three that temperature is 155 DEG C
Carry out washing, dry and rub the post processing aided processes such as stricture of vagina after baking oven is dried again and obtain sofa artificial leather.
Embodiment 2
The production method of a kind of low DMF content environmental protection furniture sofa leather, comprises the following steps:
(1) it is 100 Kg/cm by modulus2The slurry that forms of polyurethane resin 90 parts and solvent butanone 60 parts be coated on from
On type paper, carry out drying to obtain surface layer epithelium in the baking oven that temperature is 155 DEG C；
(2) it is coated with intermediate layer on surface layer epithelium in (1), in drying in two baking ovens that temperature is 155 DEG C；
(3) it is 35 Kg/cm by modulus2Polyurethane resin 90 parts and the solvent butanone 30 parts slurry that forms be coated on
Form adhesive linkage epithelium on interbed, and carry out drying to obtain epithelium in three baking ovens that temperature is 155 DEG C；It is provided with air blast in two baking ovens
Machine and air-introduced machine, the frequency >=50Hz of described aerator, the frequency >=35Hz of air-introduced machine；
(4) epithelium is preheating to 150 DEG C；
(5) by the epithelium after preheating and the laminating of the preheated laminated roller of the crust leather to 180 DEG C, in four that temperature is 140 DEG C
Carry out washing, dry and rub the post processing aided processes such as stricture of vagina after baking oven is dried again and obtain sofa artificial leather.
Embodiment 3
The production method of a kind of low DMF content environmental protection furniture sofa leather, comprises the following steps:
(1) it is 90 Kg/cm by modulus2The slurry that forms of polyurethane resin 90 parts and solvent butanone 60 parts be coated on from
On type paper, carry out drying to obtain surface layer epithelium in the baking oven that temperature is 145 DEG C；
(2) it is coated with intermediate layer on surface layer epithelium in (1), dries in two baking ovens that temperature is 140 DEG C；
(3) it is 30 Kg/cm by modulus2Polyurethane resin 90 parts and the solvent butanone 30 parts slurry that forms be coated on
Form adhesive linkage epithelium on interbed, and carry out drying to obtain epithelium in three baking ovens that temperature is 145 DEG C；It is provided with air blast in two baking ovens
Machine and air-introduced machine, the frequency >=50Hz of described aerator, the frequency >=35Hz of air-introduced machine；
(4) epithelium is preheating to 150 DEG C；
(5) by the epithelium after preheating and the laminating of the preheated laminated roller of the crust leather to 170 DEG C, in four that temperature is 120 DEG C
Carry out washing, dry and rub the post processing aided processes such as stricture of vagina after baking oven is dried again and obtain sofa artificial leather.
The properties such as the hydrolysis of Synthetic Leather prepared by above-described embodiment 1-3, wearability, peel strength
Detect as shown in the table:
| Leading indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Existing sofa artificial leather | Examination criteria |
| Outward appearance | Decorative pattern is full | Decorative pattern is full | Decorative pattern is full | Decorative pattern is full | GB/T8949-1995 |
| Hydrolysis (year) | 2 | 2 | 2 | 1 | GB/T8949-1995 |
| Wearability | Do not break for 200000 times | Do not break for 200000 times | Do not break for 200000 times | Do not break for 100000 times | Wei Shibo is wear-resisting |
| Peel strength (N/cm3) | 45 | 53 | 52 | 28 | GB/T8949-1995 |
| Stretch breaking strength (N/cm3) | 287 | 350 | 298 | 230 | GB/T8949-1995 |
| Solvent (ppm) | 17 | 28 | 19 | 1500 | GC-MS |
Finding out from upper table, the sofa artificial leather not only DMF content that the present invention produces is less than 50ppm, and peel strength and antifriction
Wipe, hydrolysis is superior to existing sofa artificial leather product, and also have that third dimension of patterns is strong, leather surface thickness is uniform, glossiness consistent,
The advantages such as soft plentiful, the free from extraneous odour of feel.
The present embodiment is only used for the elaboration of the technology of the present invention content, but the flesh and blood of the present invention is not limited in above-mentioned reality
Executing described in example, those of ordinary skill in the art and can should know any change based on true spirit and change
Shape, should belong to protection scope of the present invention.
Claims (3)
1. the production method of one kind low DMF content environmental protection furniture sofa leather, it is characterised in that: comprise the following steps:
(1) slurry of polyurethane resin that modulus is 70-100 Kg/cm2 with solvent butanone composition is coated in release paper, in
Temperature is to carry out drying to obtain surface layer epithelium in the baking oven of 140 DEG C-155 DEG C；
(2) slurry of polyurethane resin that modulus is 25-35 Kg/cm2 with solvent butanone composition is coated on the surface layer in (1)
Form adhesive linkage epithelium on epithelium, and carry out drying to obtain epithelium in two baking ovens that temperature is 140 DEG C-155 DEG C；
(3) epithelium is preheating to 140 DEG C-150 DEG C；
(4) by the epithelium after preheating and the laminating of the preheated laminated roller of the crust leather to 170 DEG C-180 DEG C, in temperature be 140 DEG C-
Carry out washing, dry and rub stricture of vagina post processing aided process after three baking ovens of 155 DEG C are dried again and obtain sofa artificial leather.
Production method the most according to claim 1, it is characterised in that: described step (2) is provided with aerator in two baking ovens
And air-introduced machine, the frequency >=50Hz of described aerator, the frequency >=35Hz of air-introduced machine.
Production method the most according to claim 1, it is characterised in that: described surface layer epithelium also sets in the middle of adhesive linkage epithelium
Have intermediate layer, described intervening layers on surface layer epithelium after dry in two baking ovens that temperature is 140 DEG C-155 DEG C；So
After be coated with adhesive linkage slurry after carry out drying to obtain epithelium in three baking ovens that temperature is 140 DEG C-155 DEG C；Finally will be preheating to
The epithelium of 140 DEG C-150 DEG C and the laminated roller of crust leather being preheating to 170 DEG C-180 DEG C are fitted, and are 120 DEG C-140 DEG C in temperature
Four baking ovens are dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523680.5A CN104294669B (en) | 2014-10-08 | 2014-10-08 | A kind of production method of low DMF content environmental protection furniture sofa leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523680.5A CN104294669B (en) | 2014-10-08 | 2014-10-08 | A kind of production method of low DMF content environmental protection furniture sofa leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104294669A CN104294669A (en) | 2015-01-21 |
| CN104294669B true CN104294669B (en) | 2016-08-24 |
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| CN201410523680.5A Active CN104294669B (en) | 2014-10-08 | 2014-10-08 | A kind of production method of low DMF content environmental protection furniture sofa leather |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176267C (en) * | 2002-08-30 | 2004-11-17 | 山东科特乐股份有限公司 | Prepn of superfine fiber sofa leatherette |
| JP2004204377A (en) * | 2002-12-25 | 2004-07-22 | Solotex Corp | Synthetic leather for skin material |
| CN102926221A (en) * | 2012-11-20 | 2013-02-13 | 江苏国信合成革有限公司 | Environment-friendly synthetic sofa leather and preparation method thereof |
| CN103255639B (en) * | 2013-04-19 | 2015-02-04 | 晋江市闽高纺织科技有限公司 | Environmentally-friendly polyurethane leather, preparation method and product thereof |
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Address after: 230601 peach blossom Industrial Park, Hefei economic and Technological Development Zone, Anhui Applicant after: Anhui Amway material Science and Technology Co., Ltd. Address before: 230601 peach blossom Industrial Park, Hefei economic and Technological Development Zone, Anhui Applicant before: Anhui Anli Artificial Leather Co., Ltd. |
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