CN114921963B - Production process of synthetic leather and metal hollowed-out synthetic leather - Google Patents

Production process of synthetic leather and metal hollowed-out synthetic leather Download PDF

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Publication number
CN114921963B
CN114921963B CN202210472038.3A CN202210472038A CN114921963B CN 114921963 B CN114921963 B CN 114921963B CN 202210472038 A CN202210472038 A CN 202210472038A CN 114921963 B CN114921963 B CN 114921963B
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superfine fiber
synthetic leather
fiber base
metal
parts
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CN114921963A (en
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屠明海
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An'an China Co ltd
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An'an China Co ltd
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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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
    • 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
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • 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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06Q—DECORATING TEXTILES
    • D06Q1/00—Decorating textiles
    • D06Q1/12—Decorating textiles by transferring a chemical agent or a metallic or non-metallic material in particulate or other form, from a solid temporary carrier to the textile
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D06N2209/123—Breathable
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Abstract

The invention provides a production process of synthetic leather and metal hollowed-out synthetic leather, wherein the production process comprises the steps of electroplating a metal target material on the surface of a release film; coating a layer of adhesive on the metal target material electroplated on the surface of the release film, and then carrying out laser engraving treatment according to the line requirements, thereby obtaining a transfer film with metal hollowed-out feeling; transferring the transfer film to the superfine fiber base blank, and performing hot pressing to tightly adhere the transfer film and the superfine fiber base blank together to form a superfine fiber semi-finished product; and carrying out dry veneering treatment on the superfine fiber semi-finished product, thereby obtaining the final metal hollowed-out synthetic leather. The invention has the advantages that: the leather surface can be endowed with high-grade feel, and the product patterns are enriched, so that most of requirements of people on the appearance of the leather can be well met; after the dry process veneering, the superfine fiber base blank can be reliably combined with polyurethane, so that the peel strength of the finally obtained metal hollowed-out synthetic leather can be ensured.

Description

Production process of synthetic leather and metal hollowed-out synthetic leather
[ field of technology ]
The invention relates to the technical field of synthetic leather, in particular to a production process of synthetic leather and metal hollowed-out synthetic leather.
[ background Art ]
The metal synthetic leather is prepared by taking synthetic leather as a base material, coating a bottom coating after surface treatment, then coating a monomer metal coating layer, and finally coating an outer coating for protecting coating. However, the traditional metal synthetic leather has the defects of low peeling strength, wear resistance, folding resistance, single style and the like, and is difficult to be applied to shoe uppers and other scenes on a large scale. In view of the above problems, the present inventors have conducted intensive studies on the problems, and have produced the present invention.
[ invention ]
The invention aims to solve the technical problems of low peeling strength, wear resistance, folding resistance and single style of the existing metal synthetic leather.
The invention is realized in the following way:
in a first aspect, a process for producing synthetic leather, the process comprising the steps of:
step S1, electroplating a metal target material to the surface of a release film;
step S2, coating a layer of adhesive on the metal target material electroplated on the surface of the release film, and then carrying out laser engraving treatment according to the line requirements, thereby obtaining a transfer film with metal hollowed-out feeling;
s3, transferring the transfer film to the superfine fiber base blank, and tightly bonding the transfer film and the superfine fiber base blank together through hot pressing to form a superfine fiber semi-finished product;
and S4, performing dry veneering treatment on the superfine fiber semi-finished product, so as to obtain the final metal hollowed-out synthetic leather.
Further, the step S1 specifically includes: adopting the density of 0.915-0.930 g.cm 3 The metallocene PE film is used as a release film, and a corresponding type of metal target is selected according to the appearance requirement of the product; and atomizing the selected metal target material by a vacuum coating machine and uniformly spraying the metal target material on the surface of the metallocene PE film.
Further, in the step S3, the superfine fiber base stock adopts the superfine fiber with high hydrolysis resistance and the specification of 1.20-1.40mm, and the superfine fiber base stock is subjected to fine grinding treatment by using 240-mesh fine sand paper before the transfer film is transferred to the superfine fiber base stock.
Further, the step S3 specifically includes: aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank, and feeding the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-press laminating machine, wherein the hot-press laminating machine heats and rolls the transfer film and the superfine fiber base blank under the conditions that the temperature is 140-200 ℃ and the speed is 2-5m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together; and (3) after cooling, stripping and rolling the release film to obtain the superfine fiber semi-finished product.
Further, the step S4 specifically includes:
s41, preparing a fabric;
step S42, coating a layer of fabric on the surface of the plain release paper, and drying the fabric coated on the plain release paper;
step S43, preparing a backing material;
and S44, coating a layer of backing material on the surface material of the plain release paper, attaching the superfine fiber semi-finished product to the backing material, and drying to obtain the final metal hollowed-out synthetic leather.
Further, the step S41 specifically includes: 100 parts of hydrolysis-resistant fabric resin, 20-40 parts of dimethylformamide, 20-40 parts of butanone and 2 parts of water repellent agent are uniformly mixed according to parts by mass, and the fabric with the viscosity of 2500-3000 cps is prepared for standby.
Further, the step S43 specifically includes: 100 parts of hydrolysis-resistant primer resin, 10-30 parts of dimethylformamide and 10-30 parts of butanone are uniformly mixed according to parts by mass, and a one-liquid hydrolysis-resistant primer with the viscosity of 8000-10000cps, the solid content of 30-40% and the modulus of 15-25 Kg/cm < 2 > is prepared for standby.
Further, in the step S42, the coating amount of the fabric is controlled to be 100-120 g/square meter, the drying temperature is controlled to be 80-100 ℃, and the drying time is 3-4 minutes;
in the step S44, the coating amount of the base material is controlled to be 150-200 g/square meter, and when the superfine fiber semi-finished product is attached to the base material and dried, the temperature is increased in 100-120 ℃ for drying.
Further, in the step S2, the adhesive is a pressure-sensitive adhesive or a hot melt adhesive.
In a second aspect, the metal hollowed-out synthetic leather prepared based on the production process comprises a superfine fiber bottom layer, an adhesive layer, a metal laser engraving layer, a dry base material layer and a dry fabric layer from bottom to top.
By adopting the technical scheme of the invention, the invention has at least the following beneficial effects:
1. the laser engraving process is introduced into the field of synthetic leather, so that elegant metal luster is added to the synthetic leather, fashion sense and practicability are given to the synthetic leather, and the laser engraving process and the dry veneering process are combined, so that the leather surface is provided with high-grade sense, the product style is enriched, and most of requirements of people on the appearance of the leather can be well met. Meanwhile, after the transfer film with metal hollowed-out feeling is formed by utilizing a laser engraving process, the transfer film can be directly attached to the superfine fiber base blank after hot pressing, at the moment, the metal hollowed-out layer can be tightly combined with the superfine fiber base blank and achieve high binding force, and meanwhile, as the metal hollowed-out part of the superfine fiber semi-finished product is the superfine fiber base blank, after dry veneering, the superfine fiber base blank can be reliably combined with polyurethane, and further, the peeling strength of the finally obtained metal hollowed-out synthetic leather can be ensured.
2. The metallocene PE film (mLLDPE) is used as the release film, so that the performance of the release film can be effectively improved, the metallocene PE film is a non-disposable consumable material, and the metallocene PE film can be repeatedly used after being transferred and attached, so that the production cost can be reduced, the production amount of solid waste can be reduced, and the treatment cost is reduced.
3. The metal hollowed-out synthetic leather prepared by adopting the high hydrolysis resistance superfine fiber as the bottom blank of the synthetic leather has the characteristics of good air permeability, soft hand feeling, high trouser tearing strength and the like.
4. The protective film is formed by coating the superfine fiber semi-finished product with two layers of resin by adopting a dry veneering process, and the two layers of resin can form a relatively stable whole, so that the tear resistance of the metal hollowed-out synthetic leather can be improved.
[ description of the drawings ]
The invention will be further described with reference to examples of embodiments with reference to the accompanying drawings.
FIG. 1 is a block diagram of an execution flow of a process for producing synthetic leather according to the present invention;
fig. 2 is a schematic layer structure of the metal hollowed-out synthetic leather prepared by the production process of the invention.
Reference numerals illustrate:
the metal hollow synthetic leather comprises a 100-metal hollow synthetic leather substrate, a 1-superfine fiber substrate, a 2-adhesive layer, a 3-metal laser engraving layer, a 4-dry-process primer layer and a 5-dry-process fabric layer.
[ detailed description ] of the invention
In order to better understand the technical scheme of the present invention, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 2, the production process of the synthetic leather of the present invention includes the following steps:
step S1, electroplating a metal target material to the surface of a release film;
step S2, coating a layer of adhesive on the metal target material electroplated on the surface of the release film, and carrying out laser engraving treatment according to the grain requirement, wherein after the treatment, light refraction points with different heights and different sizes can be formed, and under illumination, the diffuse reflection of light rays with different wavelengths can enable the laser film to present rainbow and brilliance, so that a transfer film with metal hollowed-out feeling is obtained;
s3, transferring the transfer film to the superfine fiber base blank, and tightly bonding the transfer film and the superfine fiber base blank together through hot pressing to form a superfine fiber semi-finished product;
and S4, performing dry veneering treatment on the superfine fiber semi-finished product, so as to obtain the final metal hollowed-out synthetic leather.
According to the invention, the ductility of metal is fully utilized, the transfer film with metal hollowed-out feeling is formed by utilizing a laser engraving process, the transfer film is transferred and stuck on the superfine fiber base blank to prepare a superfine fiber semi-finished product, and then the superfine fiber semi-finished product is subjected to dry-process veneering, so that the synthetic leather with metal hollowed-out feeling is obtained. According to the invention, the laser engraving process is introduced into the field of synthetic leather, so that elegant metallic luster is added to the synthetic leather, fashion sense and practicability are provided for the synthetic leather, and the laser engraving process and the dry veneering process are combined, so that the leather surface is provided with high-grade sense, the product style is enriched, and most of requirements of people on the appearance of the leather can be well met.
Meanwhile, after the transfer film with metal hollowed-out feeling is formed by utilizing a laser engraving process, the transfer film can be directly attached to the superfine fiber base blank after hot pressing, at the moment, the metal hollowed-out layer can be tightly combined with the superfine fiber base blank and achieve high binding force, and meanwhile, as the metal hollowed-out part of the superfine fiber semi-finished product is the superfine fiber base blank, after dry veneering, the superfine fiber base blank can be reliably combined with polyurethane, and further, the peeling strength of the finally obtained metal hollowed-out synthetic leather can be ensured.
In the embodiment of the present invention, the step S1 specifically includes: adopting the density of 0.915-0.930 g.cm 3 The metallocene PE film is used as a release film, and a corresponding type of metal target is selected according to the appearance requirement of the product; and atomizing the selected metal target material by a vacuum coating machine and uniformly spraying the metal target material on the surface of the metallocene PE film. The invention is thatIn the implementation, the vacuum coating machine needs to atomize and spray the metal target under the conditions of vacuum, low voltage and high current, and aluminum plating, chromium plating, nickel plating, copper plating, iron plating and the like can be performed during spray plating, namely, the metal target can be aluminum, chromium, nickel, copper, iron and the like, and the effects of matte surface, bright mirror surface and the like can be plated through the vacuum coating machine, and the specific vacuum spray plating effect depends on the adopted metal target.
Metallocene polyethylene (mPE) is mainly a copolymer of ethylene and alpha-1 olefins (e.g. butene-1, octene-1, hexene-1). As compared with traditional LLDPE, the metallocene LLDPE has larger elongation at break and more excellent impact resistance, so the density of the metallocene LLDPE is 0.915-0.930 g.cm 3 The metallocene PE film (mLLDPE) is used as a release film, so that the performance of the release film can be effectively improved, the metallocene PE film is a non-disposable consumable material, and the metallocene PE film can be repeatedly used after being transferred and attached, so that the production cost can be reduced, the generation amount of solid waste can be reduced, and the treatment cost is reduced.
In the embodiment of the present invention, in the step S2, in order to achieve better laser and thermal bonding effects, the adhesive is a pressure-sensitive adhesive or a hot melt adhesive.
In the step S2, a layer of adhesive is coated on the metal target material electroplated on the surface of the release film, and then laser engraving treatment is performed, so that due to the luxurious decorative effect of the laser material, any pattern (which cannot completely cover the laser surface) can be printed on the laser surface of the laser substrate according to the pattern, thereby meeting the requirements of customers; and the colorful light generated by the laser surfaces of the patterns or gaps in the patterns can enable the patterns to generate strong dynamic and varied colorful pictures. For example, in the specific implementation, a line grain formed by small squares can be selected for carving, and a transfer film with metal hollowed-out is used.
It should be noted that: when laser engraving is specifically performed, three elements of temperature, speed and tension are required to be mastered, if the three elements are controlled inaccurately, serious problems such as chromatic aberration, black spots, white spots, water lines, wrinkles, cloud flowers, pits and the like can be generated, and sometimes quality defects such as deformation of laser pictures and texts and light columns, unstable tension and the like can also occur; these defects can also cause great trouble in subsequent printing and even render the laser film unavailable for printing.
In the embodiment of the present invention, in the step S3, the superfine fiber base blank adopts the superfine fiber with high hydrolysis resistance and the specification of 1.20-1.40mm, and before the transfer film is transferred to the superfine fiber base blank, the superfine fiber base blank is subjected to fine grinding treatment by using 240 mesh fine sand paper, so that the surface of the superfine fiber base blank is smoother and the thickness is more uniform.
Because the high hydrolysis resistance superfine fiber has the characteristics of hydrolysis resistance, soft hand feeling, high trouser tearing strength, the invention can lead the prepared metal hollowed-out synthetic leather to have the characteristics of good air permeability, soft hand feeling, high trouser tearing strength and the like by adopting the high hydrolysis resistance superfine fiber as the bottom blank of the synthetic leather.
In the embodiment of the present invention, the step S3 specifically includes: aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank and sending the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-pressing laminating machine, heating and rolling the transfer film and the superfine fiber base blank by the hot-pressing laminating machine under the conditions that the temperature is 140-200 ℃ and the speed is 2-5m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together, wherein a carrier layer of the transfer film contacts a hot roller of the hot-pressing laminating machine, an adhesive layer of the transfer film contacts the superfine fiber base blank, and the transfer film and the superfine fiber base blank can be well thermally bonded together by continuously pulling the transfer film and the superfine fiber base blank out of a pair of rollers; after cooling, the release film is peeled off and rolled up (the release film can be reused after being rolled up), so that the metal hollow layer is transferred to the surface of the superfine fiber base blank, and the superfine fiber semi-finished product is obtained.
Compared with the traditional metal synthetic leather process, the invention can reduce the chemical gas pollution caused by the steps of product treatment, plating and the like and greatly increase the performance of the product by transferring the transfer film to the superfine fiber base blank.
In the embodiment of the present invention, in order to improve the tear resistance of the prepared metal hollowed-out synthetic leather, the step S4 specifically includes:
s41, preparing a fabric;
step S42, coating a layer of fabric on the surface of the plain release paper, and drying the fabric coated on the plain release paper;
step S43, preparing a backing material;
and S44, coating a layer of backing material on the surface material of the plain release paper, attaching the superfine fiber semi-finished product to the backing material, and drying to obtain the final metal hollowed-out synthetic leather.
In the embodiment of the present invention, the step S41 specifically includes: 100 parts of hydrolysis-resistant fabric resin, 20-40 parts of dimethylformamide, 20-40 parts of butanone and 2 parts of water repellent agent are uniformly mixed according to parts by mass, and the fabric with the viscosity of 2500-3000 cps is prepared for standby.
In the concrete implementation of the invention, the hydrolysis-resistant fabric resin adopts polyurethane resin with a solid content of 25-30% and a 100% modulus of 40-50Kg/cm < 2 >, and the polyurethane resin has the characteristics of excellent processability, good leveling property, soft hand feeling, excellent anti-sticking property, water resistance Jie Jiang, good bending resistance, comfortable and dry touch feeling on the surface, excellent light resistance and the like. Meanwhile, SI-121 fluorine-free water repellent agent is added into the fabric, so that the water repellent effect can be realized.
In the embodiment of the present invention, the step S43 specifically includes: 100 parts of hydrolysis-resistant primer resin, 10-30 parts of dimethylformamide and 10-30 parts of butanone are uniformly mixed according to parts by mass, and a one-liquid hydrolysis-resistant primer with the viscosity of 8000-10000cps, the solid content of 30-40% and the modulus of 15-25 Kg/cm < 2 > is prepared for standby. The primer resin has the characteristics of good laminating performance, fine and sharp folds and the like, and can enable the surface of the metal hollowed-out synthetic leather to have perfect outward appearance and comfortable hand feeling.
According to the invention, the protective film is formed by coating the superfine fiber semi-finished product with two layers of resin by adopting a dry veneering process, and the two layers of resin have strong hydrolysis resistance and excellent bending resistance, so that a relatively stable whole can be formed, and the tear resistance of the metal hollowed-out synthetic leather can be improved.
In the embodiment of the invention, in order to ensure the quality of the dry veneering, in the step S42, the coating amount of the fabric is controlled to be 100-120 g/square meter, the drying temperature is controlled to be 80-100 ℃, and the drying time is 3-4 minutes;
in the step S44, the coating amount of the base material is controlled to be 150-200 g/square meter, and when the superfine fiber semi-finished product is attached to the base material and dried, the temperature is increased in 100-120 ℃ for drying. In the specific implementation of the invention, after the superfine fiber semi-finished product is attached to the backing material, the superfine fiber semi-finished product can be dried in a 40-meter oven according to the increasing temperature of 100-120 ℃, for example, the superfine fiber semi-finished product can be dried in an increasing way according to the temperature of 100-105-110-115-120 ℃.
Referring to fig. 2, the metal hollowed-out synthetic leather 100 of the present invention is manufactured by the above-mentioned manufacturing process of the metal hollowed-out synthetic leather 100; the metal hollowed-out synthetic leather 100 sequentially comprises a superfine fiber bottom layer 1, an adhesive layer 2, a metal laser engraving layer 3, a dry-process primer layer 4 and a dry-process fabric layer 5 from bottom to top. The metal hollowed-out synthetic leather 100 prepared by the production process disclosed by the invention has the advantages that the leather surface can be endowed with high-grade feel, and the product patterns are enriched, so that most of requirements of people on the appearance of the leather can be well met; meanwhile, after the dry veneering, the superfine fiber base blank can be reliably combined with polyurethane, so that the peel strength of the finally obtained metal hollowed-out synthetic leather can be ensured; the dry-process veneering is formed with two layers of resin, so that the tear resistance of the metal hollowed-out synthetic leather can be improved; and the superfine fiber with high hydrolysis resistance is used as a bottom blank of the synthetic leather, so that the prepared metal hollowed-out synthetic leather has the characteristics of good air permeability, soft hand feeling, high trouser-shaped tearing strength and the like; therefore, the metal hollowed-out synthetic leather 100 prepared by the production process can be applied to vamps and other scenes in a large scale.
The invention is further illustrated by the following examples:
example 1
A process for producing synthetic leather, comprising the steps of:
step S1, adopting a density of 0.915 g.cm 3 The metallocene PE film is used as a release film, and aluminum materials are selected as metal targets; under the conditions of vacuum, low voltage and high current, throughThe vacuum coating machine atomizes the aluminum material and evenly sprays the aluminum material onto the surface of the metallocene PE film.
Step S2, coating a layer of hot melt adhesive on the aluminum material electroplated on the surface of the release film, and carrying out laser engraving treatment according to the line requirements to form light refraction points with different heights and different sizes, thereby obtaining a transfer film with metal hollowed-out feeling;
s3, selecting high hydrolysis resistance superfine fibers with the specification of 1.20mm as superfine fiber base blanks, and carrying out fine grinding treatment on the superfine fiber base blanks by utilizing 240-mesh fine sand paper so as to enable the surfaces of the superfine fiber base blanks to be smoother and the thickness to be more uniform; aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank, and feeding the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-press laminating machine, wherein the hot-press laminating machine heats and rolls the transfer film and the superfine fiber base blank under the conditions that the temperature is 140 ℃ and the speed is 2m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together; after cooling, the release film is peeled off, the metal hollow layer is transferred to the surface of the superfine fiber base blank, and the release film is rolled up at the same time so as to be used continuously.
Step S4, uniformly mixing 100 parts of hydrolysis-resistant fabric resin, 20 parts of dimethylformamide, 20 parts of butanone and 2 parts of water repellent agent according to parts by mass, and preparing fabric with the viscosity of 2500cps for later use;
coating more than one layer of prepared fabric on the surface of plain weave release paper, wherein the coating amount of the fabric is 100 g/square meter, and drying the fabric coated on the plain weave release paper at the drying temperature of 80 ℃ for 3 minutes;
uniformly mixing 100 parts of hydrolysis-resistant primer resin, 10 parts of dimethylformamide and 10 parts of butanone according to parts by mass, and preparing a one-liquid hydrolysis-resistant primer with the viscosity of 8000cps, the solid content of 30% and the modulus of 15Kg/cm < 2 >;
coating more than one layer of prepared backing material on the surface material of the plain release paper, wherein the coating amount of the backing material is 150 g/square meter, bonding the superfine fiber semi-finished product with the backing material, drying, and incrementally drying according to the temperature of 100-105-110-115-120 ℃ during drying to obtain the final metal hollowed-out synthetic leather.
Example 2
A process for producing synthetic leather, comprising the steps of:
step S1, adopting a density of 0.920 g.cm 3 The metallocene PE film is used as a release film, and a copper material is selected as a metal target material; and atomizing the copper material by a vacuum coating machine under the conditions of vacuum, low voltage and high current, and uniformly spraying the copper material onto the surface of the metallocene PE film.
Step S2, coating a layer of pressure-sensitive adhesive on the aluminum material electroplated on the surface of the release film, and carrying out laser engraving treatment according to the line requirements to form light refraction points with different heights and different sizes, thereby obtaining a transfer film with metal hollowed-out feeling;
s3, selecting high hydrolysis resistance superfine fibers with the specification of 1.30mm as superfine fiber base blanks, and carrying out fine grinding treatment on the superfine fiber base blanks by utilizing 240-mesh fine sand paper so as to enable the surfaces of the superfine fiber base blanks to be smoother and the thickness to be more uniform; aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank, and feeding the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-press laminating machine, wherein the hot-press laminating machine heats and rolls the transfer film and the superfine fiber base blank under the conditions that the temperature is 170 ℃ and the speed is 3.5m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together; after cooling, the release film is peeled off, the metal hollow layer is transferred to the surface of the superfine fiber base blank, and the release film is rolled up at the same time so as to be used continuously.
Step S4, uniformly mixing 100 parts of hydrolysis-resistant fabric resin, 30 parts of dimethylformamide, 30 parts of butanone and 2 parts of water repellent agent according to parts by mass, and preparing fabric with the viscosity of 2800cps for later use;
coating more than one layer of prepared fabric on the surface of plain weave release paper, wherein the coating amount of the fabric is 110 g/square meter, and drying the fabric coated on the plain weave release paper at 90 ℃ for 3.5 minutes;
uniformly mixing 100 parts of hydrolysis-resistant primer resin, 20 parts of dimethylformamide and 20 parts of butanone according to parts by mass, and preparing a one-liquid hydrolysis-resistant primer with the viscosity of 9000cps, the solid content of 35% and the modulus of 20Kg/cm < 2 >;
coating more than one layer of prepared backing material on the surface material of the plain release paper, wherein the coating amount of the backing material is 180 g/square meter, bonding the superfine fiber semi-finished product with the backing material, drying, and incrementally drying according to the temperature of 100-105-110-115-120 ℃ during drying to obtain the final metal hollowed-out synthetic leather.
Example 3
A process for producing synthetic leather, comprising the steps of:
step S1, adopting a density of 0.930 g.cm 3 The metallocene PE film is used as a release film, and a chromium material is selected as a metal target; and atomizing the chromium material by a vacuum coating machine under the conditions of vacuum, low voltage and high current, and uniformly spraying the chromium material onto the surface of the metallocene PE film.
Step S2, coating a layer of hot melt adhesive on the aluminum material electroplated on the surface of the release film, and carrying out laser engraving treatment according to the line requirements to form light refraction points with different heights and different sizes, thereby obtaining a transfer film with metal hollowed-out feeling;
s3, selecting high hydrolysis resistance superfine fibers with the specification of 1.40mm as superfine fiber base blanks, and carrying out fine grinding treatment on the superfine fiber base blanks by utilizing 240-mesh fine sand paper so as to enable the surfaces of the superfine fiber base blanks to be smoother and the thickness to be more uniform; aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank, and feeding the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-press laminating machine, wherein the hot-press laminating machine heats and rolls the transfer film and the superfine fiber base blank under the conditions that the temperature is 200 ℃ and the speed is 5m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together; after cooling, the release film is peeled off, the metal hollow layer is transferred to the surface of the superfine fiber base blank, and the release film is rolled up at the same time so as to be used continuously.
Step S4, uniformly mixing 100 parts of hydrolysis-resistant fabric resin, 40 parts of dimethylformamide, 40 parts of butanone and 2 parts of water repellent agent according to parts by mass, and preparing fabric with the viscosity of 3000cps for later use;
coating more than one layer of prepared fabric on the surface of plain weave release paper, wherein the coating amount of the fabric is 120 g/square meter, and drying the fabric coated on the plain weave release paper at the drying temperature of 100 ℃ for 4 minutes;
uniformly mixing 100 parts of hydrolysis-resistant primer resin, 30 parts of dimethylformamide and 30 parts of butanone according to parts by mass, and preparing a one-liquid hydrolysis-resistant primer with the viscosity of 10000cps, the solid content of 40% and the modulus of 25Kg/cm < 2 >;
coating more than one layer of prepared backing material on the surface material of the plain release paper, wherein the coating amount of the backing material is 200 g/square meter, bonding the superfine fiber semi-finished product with the backing material, drying, and incrementally drying according to the temperature of 100-105-110-115-120 ℃ during drying to obtain the final metal hollowed-out synthetic leather.
Example 4
A process for producing synthetic leather, comprising the steps of:
step S1, adopting a density of 0.920 g.cm 3 The metallocene PE film is used as a release film, and a nickel material is selected as a metal target material; and atomizing the nickel material by a vacuum coating machine under the conditions of vacuum, low voltage and high current, and uniformly spraying the nickel material onto the surface of the metallocene PE film.
Step S2, coating a layer of hot melt adhesive on the aluminum material electroplated on the surface of the release film, and carrying out laser engraving treatment according to the line requirements to form light refraction points with different heights and different sizes, thereby obtaining a transfer film with metal hollowed-out feeling;
s3, selecting high hydrolysis resistance superfine fibers with the specification of 1.20mm as superfine fiber base blanks, and carrying out fine grinding treatment on the superfine fiber base blanks by utilizing 240-mesh fine sand paper so as to enable the surfaces of the superfine fiber base blanks to be smoother and the thickness to be more uniform; aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank, and feeding the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-press laminating machine, wherein the hot-press laminating machine heats and rolls the transfer film and the superfine fiber base blank under the conditions that the temperature is 160 ℃ and the speed is 3m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together; after cooling, the release film is peeled off, the metal hollow layer is transferred to the surface of the superfine fiber base blank, and the release film is rolled up at the same time so as to be used continuously.
Step S4, uniformly mixing 100 parts of hydrolysis-resistant fabric resin, 28 parts of dimethylformamide, 36 parts of butanone and 2 parts of water repellent agent according to the parts by weight, and preparing fabric with the viscosity of 2650cps for later use;
coating more than one layer of prepared fabric on the surface of plain weave release paper, wherein the coating amount of the fabric is 120 g/square meter, and drying the fabric coated on the plain weave release paper at 90 ℃ for 3 minutes;
uniformly mixing 100 parts of hydrolysis-resistant primer resin, 25 parts of dimethylformamide and 16 parts of butanone according to parts by mass, and preparing a one-liquid hydrolysis-resistant primer with the viscosity of 8500cps, the solid content of 34% and the modulus of 18Kg/cm < 2 >;
coating more than one layer of prepared backing material on the surface material of the plain release paper, wherein the coating amount of the backing material is 195 g/square meter, bonding the superfine fiber semi-finished product with the backing material, drying, and incrementally drying according to the temperature of 100-105-110-115-120 ℃ during drying to obtain the final metal hollowed-out synthetic leather.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the invention, and that equivalent modifications and variations of the invention in light of the spirit of the invention will be covered by the claims of the present invention.

Claims (8)

1. The production process of the synthetic leather is characterized by comprising the following steps of: the production process comprises the following steps:
step S1, electroplating a metal target material to the surface of a release film;
step S2, coating a layer of adhesive on the metal target material electroplated on the surface of the release film, and then carrying out laser engraving treatment according to the line requirements, thereby obtaining a transfer film with metal hollowed-out feeling;
s3, transferring the transfer film to the superfine fiber base blank, and tightly bonding the transfer film and the superfine fiber base blank together through hot pressing to form a superfine fiber semi-finished product;
s4, performing dry veneering treatment on the superfine fiber semi-finished product, so as to obtain the final metal hollowed-out synthetic leather;
the step S3 specifically comprises the following steps: aligning the laser surface of the transfer film with the front surface of the superfine fiber base blank, and feeding the aligned laser surface of the transfer film and the front surface of the superfine fiber base blank into a hot-press laminating machine, wherein the hot-press laminating machine heats and rolls the transfer film and the superfine fiber base blank under the conditions that the temperature is 140-200 ℃ and the speed is 2-5m/min, so that the transfer film and the superfine fiber base blank are tightly adhered together; after cooling, stripping and rolling the release film to obtain a superfine fiber semi-finished product;
the step S4 specifically includes: s41, preparing a fabric; step S42, coating a layer of fabric on the surface of the plain release paper, and drying the fabric coated on the plain release paper; step S43, preparing a backing material; and S44, coating a layer of backing material on the surface material of the plain release paper, attaching the superfine fiber semi-finished product to the backing material, and drying to obtain the final metal hollowed-out synthetic leather.
2. The production process according to claim 1, characterized in that: the step S1 specifically comprises the following steps: adopting the density of 0.915-0.930 g.cm 3 The metallocene PE film is used as a release film, and a corresponding type of metal target is selected according to the appearance requirement of the product; and atomizing the selected metal target material by a vacuum coating machine and uniformly spraying the metal target material on the surface of the metallocene PE film.
3. The production process according to claim 1, characterized in that: in the step S3, the superfine fiber base blank adopts high hydrolysis resistance superfine fiber with the specification of 1.20-1.40mm, and the superfine fiber base blank is subjected to fine grinding treatment by using 240-mesh fine sand paper before the transfer film is transferred to the superfine fiber base blank.
4. The production process according to claim 1, characterized in that: the step S41 specifically includes: 100 parts of hydrolysis-resistant fabric resin, 20-40 parts of dimethylformamide, 20-40 parts of butanone and 2 parts of water repellent agent are uniformly mixed according to parts by mass, and the fabric with the viscosity of 2500-3000 cps is prepared for standby.
5. The production process according to claim 1, characterized in that: the step S43 specifically includes: 100 parts of hydrolysis-resistant primer resin, 10-30 parts of dimethylformamide and 10-30 parts of butanone are uniformly mixed according to parts by mass, and a one-liquid hydrolysis-resistant primer with the viscosity of 8000-10000cps, the solid content of 30-40% and the modulus of 15-25 Kg/cm < 2 > is prepared for standby.
6. The production process according to claim 1, characterized in that: in the step S42, the coating amount of the fabric is controlled to be 100-120 g/square meter, the drying temperature is controlled to be 80-100 ℃, and the drying time is 3-4 minutes;
in the step S44, the coating amount of the base material is controlled to be 150-200 g/square meter, and when the superfine fiber semi-finished product is attached to the base material and dried, the temperature is increased in 100-120 ℃ for drying.
7. The production process according to claim 1, characterized in that: in the step S2, the adhesive is a pressure-sensitive adhesive or a hot melt adhesive.
8. A metal hollowed-out synthetic leather based on the production process of any one of claims 1-7, characterized in that: the metal hollowed-out synthetic leather sequentially comprises a superfine fiber bottom layer, an adhesive layer, a metal laser engraving layer, a dry-method primer layer and a dry-method fabric layer from bottom to top.
CN202210472038.3A 2022-04-29 2022-04-29 Production process of synthetic leather and metal hollowed-out synthetic leather Active CN114921963B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH273932A (en) * 1949-01-08 1951-03-15 Staeger Reinhard Process for the production of grains on artificial leather and product manufactured according to the process.
JPH06192966A (en) * 1992-12-25 1994-07-12 Kanebo Ltd Silvered artificial leather
JPH081861A (en) * 1994-06-22 1996-01-09 Nagoya Kagaku Kogyo Kk Leather for decoration and its production
JPH0966577A (en) * 1995-08-31 1997-03-11 Unitika Ltd Manufacture of retroreflective cloth
EP1903140A1 (en) * 2006-09-12 2008-03-26 Formosa Taffeta Co.,Ltd. Color-coated, fouling-resistant conductive cloth and manufacturing method thereof
JP2010058301A (en) * 2008-09-02 2010-03-18 Isamu Kuremoto Embossing method for leather-like sheet and leather-like sheet obtained by the same
CN107268280A (en) * 2017-06-10 2017-10-20 烟台博源科技材料股份有限公司 A kind of non-woven fabric and its production technology
CN113969120A (en) * 2020-07-24 2022-01-25 东莞市贤康电子科技有限公司 Electromagnetic shielding cloth and manufacturing method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH273932A (en) * 1949-01-08 1951-03-15 Staeger Reinhard Process for the production of grains on artificial leather and product manufactured according to the process.
JPH06192966A (en) * 1992-12-25 1994-07-12 Kanebo Ltd Silvered artificial leather
JPH081861A (en) * 1994-06-22 1996-01-09 Nagoya Kagaku Kogyo Kk Leather for decoration and its production
JPH0966577A (en) * 1995-08-31 1997-03-11 Unitika Ltd Manufacture of retroreflective cloth
EP1903140A1 (en) * 2006-09-12 2008-03-26 Formosa Taffeta Co.,Ltd. Color-coated, fouling-resistant conductive cloth and manufacturing method thereof
JP2010058301A (en) * 2008-09-02 2010-03-18 Isamu Kuremoto Embossing method for leather-like sheet and leather-like sheet obtained by the same
CN107268280A (en) * 2017-06-10 2017-10-20 烟台博源科技材料股份有限公司 A kind of non-woven fabric and its production technology
CN113969120A (en) * 2020-07-24 2022-01-25 东莞市贤康电子科技有限公司 Electromagnetic shielding cloth and manufacturing method thereof

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