CN110306315B - Post-processing technology for base cloth of superfine fiber synthetic leather - Google Patents
Post-processing technology for base cloth of superfine fiber synthetic leather Download PDFInfo
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- CN110306315B CN110306315B CN201910569203.5A CN201910569203A CN110306315B CN 110306315 B CN110306315 B CN 110306315B CN 201910569203 A CN201910569203 A CN 201910569203A CN 110306315 B CN110306315 B CN 110306315B
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- 239000004744 fabric Substances 0.000 title claims abstract description 147
- 239000000835 fiber Substances 0.000 title claims abstract description 37
- 239000002649 leather substitute Substances 0.000 title claims abstract description 21
- 238000012805 post-processing Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 45
- 239000008041 oiling agent Substances 0.000 claims abstract description 31
- 238000004898 kneading Methods 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 9
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229960004705 kojic acid Drugs 0.000 claims abstract description 9
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- MXZROAOUCUVNHX-UHFFFAOYSA-N 2-Aminopropanol Chemical compound CCC(N)O MXZROAOUCUVNHX-UHFFFAOYSA-N 0.000 claims abstract description 8
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- 239000000126 substance Substances 0.000 claims abstract description 7
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 10
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 10
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 10
- GCSPRLPXTPMSTL-IBDNADADSA-N [(2s,3r,4s,5s,6r)-2-[(2s,3s,4s,5r)-3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[C@@]1([C@]2(CO)[C@H]([C@H](O)[C@@H](CO)O2)O)O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O GCSPRLPXTPMSTL-IBDNADADSA-N 0.000 claims description 9
- 239000010985 leather Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
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- 238000010438 heat treatment Methods 0.000 claims description 2
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- 239000007921 spray Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 230000006872 improvement Effects 0.000 description 7
- 241000321398 Dermatolepis dermatolepis Species 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
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- -1 Aminopropanol kojic acid phosphate ester Chemical class 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
- D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C19/00—Breaking or softening of fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/06—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/44—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen containing nitrogen and phosphorus
- D06M13/453—Phosphates or phosphites containing nitrogen atoms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C2700/00—Finishing or decoration of textile materials, except for bleaching, dyeing, printing, mercerising, washing or fulling
- D06C2700/09—Various apparatus for drying textiles
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the technical field of preparation methods of superfine fiber synthetic leather, and discloses a post-processing technology of base cloth of superfine fiber synthetic leather, which comprises the following steps of: s1: expanding and drying; s2: oiling treatment; repeatedly padding the base fabric subjected to the S1 spreading and drying into a oiling agent, wherein the oiling agent comprises the following chemical components in parts by weight: 40-60 parts of amino silicone oil, 30-50 parts of aminopropanol kojic acid phosphate, 6-9 parts of diatomite, 3-7 parts of talcum powder and 10-14 parts of surfactant; s3: shaping and drying; s4: and (5) kneading the skins. By using the above-mentioned oiling agent, the tear strength of the base fabric is improved.
Description
Technical Field
The invention relates to the technical field of preparation methods of superfine fiber synthetic leather, in particular to a base cloth post-processing technology of superfine fiber synthetic leather.
Background
The superfine fiber synthetic leather is one of important application products of superfine fibers, has the characteristics of high physical property and strong imitation leather property, is widely applied to industries such as clothes, shoes, cases, furniture and the like, and occupies an important position in production and life of people.
For example, Chinese patent with publication number CN109695159A discloses a preparation method of a microfiber inverted-color cowhide leather, which comprises the steps of selecting polyamide 6 and low-density polyethylene blended cloth as base cloth, and carrying out resin impregnation, cell control, toluene reduction, oiling and skin-rubbing finishing, dry-method laminating, three-plate coating, high-temperature foaming, color modification and effect treatment of a nubuck layer to obtain the finished inverted-color cowhide microfiber leather. After the base cloth is subjected to toluene decrement treatment, the base cloth basically has the microstructure, the physical and chemical properties and the sensory characteristics which are possessed by the synthetic leather base cloth. However, the toluene is reduced to change the shape and structure of the base fabric, and the base fabric with stable structure and performance can be formed only by further finishing.
The oiling and leather-kneading finishing mentioned above belongs to post-processing treatment of the base fabric, and the main task of the post-processing treatment of the base fabric is to further improve and endow the base fabric with the proper performance and characteristics through proper processing means. The oiling and skin-rubbing finishing is to pre-dry the base leather bass subjected to toluene decrement in an oven at the temperature of 70 ℃, pull the base leather bass into an oil agent tank containing an oil leather softener to be soaked, extrude the base leather bass through a rubber roller at the rolling residual rate of 50%, dry, stretch and shape the base leather bass in an expanding dryer at the drying temperature of 130 ℃, control the speed of the drying machine at 10m/min, rub the base leather bass in a skin-rubbing machine at the gap of 3cm, and move the toothed plates at the frequency of 200 r/min. After the base cloth is subjected to decrement and drying, the structure of the base cloth is changed, the surface of the base cloth is dry, the whole hand feeling plate is hard, and the strength is lower. By applying the softening agent, the softening agent is made to enter the base cloth and combine with the base cloth, so that the softness of the base cloth is increased.
The softening agent forms an oil film on the surface of the base cloth, so that the friction force between the base cloth and the skin is reduced, and people feel softer when feeling the synthetic leather. However, the dried fibers contain strong internal stress, the stress is not eliminated when the fibers are coated with the softening agent, and the stress is difficult to eliminate after an oil film is formed, so that the stress distribution of the fibers is uneven when the base cloth is stressed, and the fibers are broken by sequentially applying the maximum load one by one, so that the tearing strength of the base cloth is low when the base cloth is subsequently processed into the synthetic leather.
Disclosure of Invention
The invention aims to provide a post-processing technology of base cloth of superfine fiber synthetic leather, and the tear strength of the produced base cloth is improved.
The technical purpose of the invention is realized by the following technical scheme:
a post-processing technology for base cloth of superfine fiber synthetic leather comprises the following steps of:
s1: expanding and drying;
s2: oiling treatment; repeatedly padding the base fabric subjected to the S1 spreading and drying into a oiling agent, wherein the oiling agent comprises the following chemical components in parts by weight: 40-60 parts of amino silicone oil, 30-50 parts of aminopropanol kojic acid phosphate, 6-9 parts of diatomite, 3-7 parts of talcum powder and 10-14 parts of surfactant;
s3: shaping and drying;
s4: and (5) kneading the skins.
By adopting the technical scheme, the amino silicone oil can improve the softness, crease-resistance elasticity and the like of the base fabric after weight reduction. The base cloth is repeatedly padded in the oiling agent, the oiling agent can fully permeate into the base cloth, and a combined oil film is formed on the surface of the base cloth, and the amino silicone oil is the main component of the combined oil film. After an oil film is formed on the surface of the base fabric, the friction force is reduced, the fibers have the relative sliding capacity, a mechanical supplement among the fibers is formed, and the tearing strength is improved while the flexibility of the base fabric is improved. The aminopropanol kojic acid phosphate has amino and alcoholic hydroxyl in molecules, so that fibers can slide properly in the base cloth, the stress in the base cloth cannot be concentrated on only the first few fibers at the tearing position, the stress can be quickly transferred to other fibers to share the stress, the stress is dispersed, and finally the tearing strength of the base cloth is improved.
The diatomite and the talcum powder are used as two common inorganic fillers, so that the oiling agent can have relative viscosity, and the contact time of the base cloth and the oiling agent can be prolonged when the base cloth is padded in the oiling agent. Meanwhile, the diatomite and the talcum powder can promote fibers to slide relatively in the base cloth, so that the tearing strength of the base cloth is further improved, and the tearing strength of the base cloth can be improved by the aminopropanol kojic acid phosphate. By adding the aminopropanol kojic acid phosphate, the diatomite and the talcum powder into the oiling agent, the stress in the fibers of the base cloth can be eliminated before an oil film is formed, so that the tearing strength of the base cloth is improved.
As a further improvement of the invention, the surfactant is a mixture of sucrose laurate and sodium carboxymethyl cellulose, and the mass ratio of the sucrose laurate to the sodium carboxymethyl cellulose is 3: 5.
By adopting the technical scheme, the sucrose laurate and the sodium carboxymethyl cellulose are mixed with each other, so that the surface of the base fabric can have moistening feeling, and meanwhile, the softness of the base fabric can be improved by using the compound preparation of the sucrose laurate and the sodium carboxymethyl cellulose; on the other hand, the sucrose laurate, the sodium carboxymethylcellulose, the diatomite and the talcum powder act on the aminopropanol kojic acid phosphate together, so that the relative sliding capacity of the fibers in the base cloth is stronger, the speed of dispersing the stress in the base cloth is higher, and the tearing strength of the base cloth is stronger.
As a further improvement of the invention, the S1 expanding drying is carried out, the base cloth after the decrement treatment is conveyed into a drying room, the base cloth is expanded in the drying room process, and the expanding rate is controlled to be 5-8%; the drying temperature in the drying room is 110-130 ℃.
By adopting the technical scheme, the base cloth is input into a drying room, is dried and transversely stretched by hot air, and is finally subjected to heat fixing and forming at the temperature of 110-130 ℃. When the temperature exceeds 130 ℃, the base cloth is easily dried excessively, and the surface flatness of the base cloth is reduced. When the temperature is less than 110 ℃, the residual amount of water on the base cloth is too high, resulting in poor drying.
As a further improvement of the invention, before carrying out the S1 expanding drying, the base cloth is tensioned, a small amount of clean water is sprayed on the base cloth, then the base cloth is conveyed into the tensioning roller group, and after passing through the tensioning roller group, the base cloth is subjected to the S1 expanding drying.
Through adopting above-mentioned technical scheme, earlier carry out the tensioning with the base cloth before expanding drying to prevent that the fold from appearing before the base cloth gets into the baking house, thereby influence subsequent diffusion drying. The clear water is sprayed towards the base cloth, the damage is prevented from occurring when the base cloth is tensioned, and meanwhile the tensioning effect is better.
As a further improvement of the invention, the S2 oiling treatment comprises the steps of inputting the base cloth processed by the S1 into an upper oil groove, inputting the oiling agent into the upper oil groove before inputting the base cloth, heating the oiling agent to 30-40 ℃, inputting the base cloth into the upper oil groove, and padding for at least 5 times; and finally, cleaning the base cloth by using clean water.
By adopting the technical scheme, the temperature of the oiling agent is increased to 30-40 ℃, so that the self capacity of each molecule in the oiling agent can be improved, the reactivity is improved, the permeation and absorption of the base cloth to the oiling agent can be promoted, and the same phenomenon that once the temperature exceeds 40 ℃, the oiling agent is demulsified and floated, the oiling agent is gathered on the surface of the base cloth, the permeation effect is influenced, and oil spots are coagulated, so that the oiling failure is caused.
As a further improvement of the invention, the S3 shaping and drying process comprises the steps of inputting the base cloth subjected to the oiling treatment in the S2 mode into a shaping machine, controlling the temperature in an oven in the shaping machine at 130-150 ℃ and the shaping time at 40-70min, cooling the base cloth to room temperature, and then carrying out the S4 skin-rubbing treatment.
By adopting the technical scheme, after the base cloth is oiled, a large amount of oil enters the inside of the base cloth, wherein a part of oil is dissociated in the solution in the gaps of the base cloth, and in the drying process, water is volatilized and the temperature is raised, so that the oil is demulsified, and the oil is gradually expanded on the surface of the fiber and is combined and fixed. The temperature is controlled within the range of 130-150 ℃ and the duration is 40-70min, so that the moisture can be completely volatilized, the oil agent can be uniformly distributed in the base cloth, and the hand feeling is improved. On the other hand, weak ionic bonds are bonded in the oil agent, and the distance between oil agent ions and fibers is further shortened due to the removal of moisture, so that the affinity of the oil agent and the base cloth is enhanced.
As a further improvement of the invention, in the S4 rubbing treatment, the base cloth after being treated by the S3 is firstly input into a rubbing machine for rubbing and rubbing, wherein the rotating speed of an eccentric wheel of the rubbing machine is 300-400r/min, and the conveying speed is 1-1.5 m/min.
After a series of physical and chemical actions and mechanical processing are carried out before the base cloth, the base cloth has stress, and the whole board of the base cloth is hard to warp and has poor flexibility. Through the softening treatment, the fibers of the base cloth are loosened and rearranged to a certain degree, the stress and the hard feeling are eliminated, and the elasticity, the compressibility and the like of the base cloth are ensured.
As a further improvement of the invention, clean water is sprayed towards the base cloth in the process of feeding the base cloth into the leather kneading machine for kneading.
Through adopting above-mentioned technical scheme, through spraying clear water towards the base cloth, can prevent that the base cloth from appearing the damage at the in-process of rubbing the skin.
In conclusion, the invention has the advantages and beneficial effects that:
1. the base cloth is oiled, and before an oil film is formed, the stress in the fibers of the base cloth is eliminated, so that the tearing strength of the base cloth is improved;
2. the base cloth is tensioned before the expanding drying, so that the base cloth is prevented from being wrinkled before entering a drying room, and subsequent expanding drying is influenced. Clear water is sprayed towards the base cloth, so that the base cloth is prevented from being damaged when being tensioned, and the tensioning effect is better;
3. after the base cloth is coated with the oil agent, a large amount of oil agent enters the base cloth, wherein a part of the oil agent is dissociated in the solution in the gaps of the base cloth, and in the drying process, water is volatilized and the temperature is increased, so that the oil agent is demulsified, and the oil agent is gradually expanded on the surface of the fiber and is combined and fixed. The temperature is controlled within the range of 130-150 ℃ and the duration is 40-70min, so that the moisture can be completely volatilized, the oil agent can be uniformly distributed in the base cloth, and the hand feeling is improved. On the other hand, weak ionic bonds are bonded in the oil agent, and the distance between oil agent ions and fibers is further shortened due to the removal of moisture, so that the affinity of the oil agent and the base cloth is enhanced.
Drawings
FIG. 1 is a process flow diagram of a post-processing technique of a base cloth of superfine fiber synthetic leather.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
referring to fig. 1, a base of superfine fiber synthetic leatherThe cloth post-processing technology comprises the step of spraying clear water on the reduced base cloth, wherein the spraying amount of the clear water is 100ml/m2. Then inputting the base cloth into a tensioning roller group to enable the cloth to be tensioned, and processing the tensioned base cloth by the following steps:
s1: and (5) expanding and drying. Inputting the base cloth into a drying room, drying and expanding the width, wherein the expanding rate is controlled to be 6%, and the drying temperature of the base cloth in the drying room is 120 ℃. The drying time of the base cloth in the drying room is 20 min.
S2: and (6) oiling treatment. Firstly, the oiling agent is input into the oiling groove, the liquid level of the oiling agent in the oiling groove is always kept above 2/3, and the liquid temperature of the oiling agent is controlled to be 35 ℃. And then inputting the base cloth processed by the S1 into an oil feeding groove containing oiling agents, repeatedly padding the base cloth for 8 times, and finally cleaning the base cloth by using clean water for 30 min. Wherein the upper oiling agent comprises the following chemical components in parts by weight: the modified amino silicone oil is prepared from 50 parts of amino silicone oil, 40 parts of aminopropanol kojic acid phosphate, 7 parts of diatomite, 5 parts of talcum powder and 12 parts of surfactant, wherein the surfactant is a mixture of sucrose laurate and sodium carboxymethyl cellulose, the sucrose laurate is 4.5 parts by weight, and the sodium carboxymethyl cellulose is 7.5 parts by weight.
S3: and (5) shaping and drying. And (3) inputting the base cloth processed by the S2 into a setting machine, controlling the temperature in an oven of the setting machine to be 140 ℃, setting the base cloth in the setting machine for 55min, and cooling the base cloth to room temperature after positioning is finished before the next step.
S4: and (5) kneading the skins. Firstly, clear water is sprayed towards the base cloth, and the spraying amount of the clear water is 30ml/m2. Then the base cloth sprayed with clear water is input into a leather kneading machine for rubbing and kneading, wherein the rotating speed of an eccentric wheel of the leather kneading machine is controlled to be 350r/min, and the conveying speed is 1.5 m/min.
Examples 2-5 differ from example 1 in that: the chemical compositions of the upper oiling agent in the oiling treatment of S2 are shown in the following table in parts by weight:
| example 2 | Example 3 | Example 4 | Example 5 | |
| Amino silicone oil | 40 | 60 | 45 | 55 |
| Aminopropanol kojic acid phosphate ester | 30 | 50 | 35 | 45 |
| Diatomite | 6 | 9 | 7 | 8 |
| Talcum powder | 3 | 7 | 4 | 6 |
| Sucrose laurate ester | 3.75 | 5.25 | 4.125 | 4.875 |
| Sodium carboxymethylcellulose | 6.25 | 8.75 | 6.875 | 8.125 |
Comparative example 1: the difference from the example 1 is that the oiling agent is the oiling agent described in the grant publication No. CN 103556489B.
And (3) testing: measuring the tearing strength;
the same batch of base fabric was divided into four equal parts, designated A, B, C, D, and the processing techniques described in examples 1-3 and comparative example 1 were used to process A, B, C, D base fabric, and the tear strength was recorded after processing, and the tear strength was measured by a tensile machine in the manner described in the patent publication No. CN107604681B, which is entitled artificial leather, and the recorded data are shown in the following table:
as can be seen from the above table, the use of the oiling agent described in the present invention can significantly improve the tear strength of the base fabric.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. A base cloth post-processing technology of superfine fiber synthetic leather is characterized in that: carrying out the following steps on the reduced base cloth:
s1: expanding and drying;
s2: oiling treatment; repeatedly padding the base fabric subjected to the S1 spreading and drying into a oiling agent, wherein the oiling agent comprises the following chemical components in parts by weight: 40-60 parts of amino silicone oil, 30-50 parts of aminopropanol kojic acid phosphate, 6-9 parts of diatomite, 3-7 parts of talcum powder and 10-14 parts of surfactant;
s3: shaping and drying;
s4: kneading the skin;
the surfactant is a mixture of sucrose laurate and sodium carboxymethyl cellulose, and the mass ratio of the sucrose laurate to the sodium carboxymethyl cellulose is 3: 5.
2. The post-processing technology of the base cloth of the superfine fiber synthetic leather according to claim 1, which is characterized in that: s1, expanding and drying, conveying the base cloth after decrement treatment to a drying room, expanding the base cloth in the drying room process, and controlling the expanding rate to be 5% -8%; the drying temperature in the drying room is 110-130 ℃.
3. The post-processing technology of the base cloth of the superfine fiber synthetic leather according to claim 2, which is characterized in that: before the expanding drying of S1, the base cloth is tensioned, a small amount of clean water is sprayed on the base cloth, then the base cloth is conveyed into a tensioning roller group, and after the base cloth passes through the tensioning roller group, the base cloth is subjected to expanding drying of S1.
4. The post-processing technology of the base cloth of the superfine fiber synthetic leather according to claim 1, which is characterized in that: the S2 oiling treatment comprises the steps of inputting the base cloth processed by the S1 into an upper oil groove, inputting an oiling agent into the upper oil groove before inputting the base cloth, heating the oiling agent to 30-40 ℃, inputting the base cloth into the upper oil groove, and padding for at least 5 times; and finally, cleaning the base cloth by using clean water.
5. The post-processing technology of the base cloth of the superfine fiber synthetic leather according to claim 1, which is characterized in that: and S3 shaping and drying, inputting the base cloth subjected to the oiling treatment in the S2 mode into a shaping machine, controlling the temperature in an oven in the shaping machine to be 130-150 ℃, and the shaping time to be 40-70min, cooling the base cloth to room temperature, and then carrying out S4 leather-rolling treatment.
6. The post-processing technology of the base cloth of the superfine fiber synthetic leather according to claim 1, which is characterized in that: and in the S4 skin rubbing treatment, the base cloth after the S3 treatment is firstly input into a skin rubbing machine for rubbing and skin rubbing, wherein the rotating speed of an eccentric wheel of the skin rubbing machine is 300-400r/min, and the conveying speed is 1-1.5 m/min.
7. The post-processing technology of the base cloth of the superfine fiber synthetic leather according to claim 6, which is characterized in that: the base cloth sprays clean water towards the base cloth in the process of inputting the base cloth into the leather kneading machine for kneading.
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| CN110777446B (en) * | 2019-11-25 | 2022-05-03 | 杭州奔马化纤纺丝有限公司 | Preparation process of non-dyed regenerated polyester staple fiber |
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Denomination of invention: Post processing technology of substrate for ultrafine fiber synthetic leather Effective date of registration: 20230908 Granted publication date: 20220211 Pledgee: Zhangzhen Sub-branch of Zhejiang Shangyu Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG YONGXIANG SYNTHETIC MATERIAL Co.,Ltd. Registration number: Y2023330001995 |