CN114517416A - PU double-layer crystal mirror surface leather and laminating method thereof - Google Patents

PU double-layer crystal mirror surface leather and laminating method thereof Download PDF

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Publication number
CN114517416A
CN114517416A CN202111597867.6A CN202111597867A CN114517416A CN 114517416 A CN114517416 A CN 114517416A CN 202111597867 A CN202111597867 A CN 202111597867A CN 114517416 A CN114517416 A CN 114517416A
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CN
China
Prior art keywords
layer
finished product
double
coating
crystal mirror
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Pending
Application number
CN202111597867.6A
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Chinese (zh)
Inventor
曾皓
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Shengguo Dongguan New Material Technology Co ltd
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Shengguo Dongguan New Material Technology Co ltd
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Priority to CN202111597867.6A priority Critical patent/CN114517416A/en
Publication of CN114517416A publication Critical patent/CN114517416A/en
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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
    • D06N3/145—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 two or more layers of 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • 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
    • 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

Abstract

The invention discloses PU double-layer crystal mirror leather and a laminating method thereof, wherein the laminating method comprises the following steps: the method comprises the following steps: coating a wet PU layer on the base cloth; step two: coating the dry-method PU grain layer on the wet-method PU layer; step three: overprinting a printing layer on the dry-method PU grain layer to obtain a first-stage semi-finished product; step four: coating transparent polyurethane elastomer slurry on the mirror release paper, drying to form a transparent polyurethane elastomer, coating polyurethane slurry on the transparent polyurethane elastomer, and drying to be semi-dry to be used as an adhesive layer to obtain a second-stage semi-finished product; step five: injecting an auxiliary agent on the printing layer of the first-stage semi-finished product and then attaching the adhesive layer of the second-stage semi-finished product; step six: and extruding the bubbles out of the outer surface of the first-stage semi-finished product and the second-stage semi-finished product after compounding, and sequentially laminating, drying and cooling to prepare the PU double-layer crystal mirror surface leather.

Description

PU double-layer crystal mirror surface leather and laminating method thereof
Technical Field
The invention relates to the technical field of synthetic leather manufacturing, in particular to PU double-layer crystal mirror surface leather and a laminating method thereof.
Background
The PU synthetic leather is also called polyurethane synthetic leather, generally consists of base cloth and a polyurethane coating layer, is widely used for making bags, clothes, shoes, vehicles and furniture, has wide application range and large quantity, and most of the varieties can not be met by the traditional natural leather, but the existing PU double-layer crystal mirror surface product can not be widely produced and used, mainly because the production of the polyurethane easily generates bubble blank points to cause poor permeability, low efficiency and high cost, and the selectable lines of a client are few, and are generally only suitable for fine lines and slightly deep lines which are easy to generate abnormity.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
In view of the above, the present invention provides a PU double-layer crystal mirror leather and a bonding method thereof, which are designed by each layer structure and manufacturing steps to increase the crystal transparency and softness of the product, reduce the original bubble anomaly and improve the transparency and efficiency, and the bonded PU double-layer crystal leather has the advantages of strong crystal transparency, good permeability, few bubbles, good hand feeling, high production efficiency, low cost, etc.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PU double-layer crystal mirror leather comprises a base cloth, a wet PU layer, a dry PU grain layer, a printing layer, an adhesion layer and a transparent polyurethane elastomer which are sequentially and compositely arranged from bottom to top.
A method for bonding the PU double-layer crystal mirror surface leather comprises the following steps:
the method comprises the following steps: coating a wet PU layer on the base cloth;
step two: coating the dry-method PU grain layer on the wet-method PU layer;
step three: overprinting a printing layer on the dry-method PU grain layer to obtain a first-stage semi-finished product;
step four: coating transparent polyurethane elastomer slurry on the mirror release paper, drying to form a transparent polyurethane elastomer, coating polyurethane slurry on the transparent polyurethane elastomer, and drying to obtain an adhesive layer to obtain a second-stage semi-finished product;
step five: injecting an auxiliary agent on the printing layer of the first-stage semi-finished product and then attaching the adhesive layer of the second-stage semi-finished product;
step six: and extruding the bubbles out of the outer surface of the first-stage semi-finished product and the second-stage semi-finished product after compounding, and sequentially laminating, drying and cooling to prepare the PU double-layer crystal mirror surface leather.
As a preferred scheme, in the step one: firstly, pre-wetting a base cloth, and after pre-wetting, squeezing and ironing to keep the moisture content of the base cloth at 80% -95%; and then coating PU wet slurry on the soaked base cloth, and sequentially performing solidification, washing and drying to prepare the PU wet base material.
As a preferable mode, the base cloth is pre-wetted by the pre-wetting liquid.
As a preferable scheme, the pre-wetting solution is 10% -25% of DMF aqueous solution.
Preferably, the printing layer is a two-color printing layer.
Compared with the prior art, the invention has obvious advantages and beneficial effects, and concretely, according to the technical scheme, the crystal sense permeability and soft sense of the product are increased by adopting transparent polyurethane elastomer resin through the design of each layer structure and manufacturing steps, the auxiliary agent is injected into the surface of the dry-method laminated lines and then the transparent polyurethane elastomer is attached, bubbles are discharged out of the surface of the PU leather, the original bubble abnormity is reduced, the permeability and the efficiency are improved, and meanwhile, the attached PU double-layer leather has the advantages of strong crystal sense, good permeability, few bubbles, good hand feeling, high production efficiency, low cost and the like.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a cross-sectional view of a semi-finished product at a first stage in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a second-stage semi-finished product (with release paper) according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the product of the present invention (with release paper attached);
FIG. 4 is a cross-sectional view of the finished product of an embodiment of the present invention (shown schematically by tearing the release paper);
FIG. 5 is a cross-sectional view of the finished product of the present invention (after the release paper is peeled off).
The attached drawings indicate the following:
10. base cloth 20, wet process PU layer
30. Dry-process PU grain layer 40 and printing layer
50. Adhesive layer 60, transparent polyurethane elastomer
70. And (4) release paper.
Detailed Description
Referring to fig. 1 to 5, specific structures of embodiments of the present invention are shown.
The utility model provides a quartzy mirror surface leather of two system layers of PU, including base cloth 10 from bottom to top complex setting in proper order, wet process PU layer 20, dry process PU line layer 30, printing layer 40, adhesion layer 50, transparent color polyurethane elastomer 60, adopt transparent color polyurethane elastomer resin, increase the quartzy sense permeability and the comfortable soft sense of product, and inject auxiliary agent again at dry process layer line surface and laminate transparent color polyurethane elastomer 60, arrange the PU leather surface of extruding with the bubble, reduce original bubble and improve permeability and efficiency unusually.
The method for bonding the PU double-layer crystal mirror surface leather comprises the following steps:
the method comprises the following steps: coating a wet-process PU layer 20 on the base fabric 10;
step two: coating the dry-method PU texture layer 30 on the wet-method PU layer 20;
step three: overprinting a printing layer 40 on the dry-process PU grain layer 30 to obtain a first-stage semi-finished product;
step four: coating transparent polyurethane elastomer slurry on the mirror release paper 70, drying to form a transparent polyurethane elastomer 60, coating polyurethane slurry on the transparent polyurethane elastomer 60, and drying to be half-dry to be used as an adhesive layer 50 to obtain a second-stage semi-finished product;
step five: injecting an auxiliary agent into the printing layer 40 of the semi-finished product in the first stage, and then attaching the adhesive layer 50 of the semi-finished product in the second stage;
step six: and extruding the bubbles out of the outer surface of the first-stage semi-finished product and the second-stage semi-finished product after compounding, and sequentially laminating, drying and cooling to prepare the PU double-layer crystal mirror surface leather.
Preferably, the printing layer is a two-color printing layer.
In this embodiment, in step one: firstly, prewetting a base cloth 10, prewetting the base cloth 10 by using prewetting liquid, wherein the prewetting liquid is 10-25% of DMF (dimethyl formamide) aqueous solution, and squeezing and ironing after prewetting to keep the moisture content of the base cloth at 80-95%; and then coating PU wet slurry on the soaked base cloth 10, and sequentially performing solidification, washing and drying to prepare the PU wet base material.
The design of the invention is characterized in that transparent polyurethane elastomer resin is adopted to increase the crystal sense permeability and soft sense of the product mainly through the design of each layer structure and manufacturing steps, an auxiliary agent is injected into the surface of the dry method layer grain and then the transparent polyurethane elastomer is attached, air bubbles are discharged out of the surface of the PU leather, the original air bubbles are reduced, the permeability and the efficiency are improved, and meanwhile, the attached PU double-layer leather has the advantages of strong crystal sense, good permeability, few generated air bubbles, good hand sense, high production efficiency, low cost and the like.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims (6)

1. The utility model provides a two system layer crystal mirror surface leathers of PU which characterized in that: comprises a base cloth, a wet PU layer, a dry PU grain layer, a printing layer, an adhesion layer and a transparent polyurethane elastomer which are sequentially and compositely arranged from bottom to top.
2. The method for bonding the PU double-layer crystal mirror leather according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:
the method comprises the following steps: coating a wet PU layer on the base cloth;
step two: coating the dry-method PU texture layer on the wet-method PU layer;
step three: overprinting a printing layer on the dry-method PU grain layer to obtain a first-stage semi-finished product;
step four: coating transparent polyurethane elastomer slurry on the mirror release paper, drying to form a transparent polyurethane elastomer, coating polyurethane slurry on the transparent polyurethane elastomer, and drying to be semi-dry to be used as an adhesive layer to obtain a second-stage semi-finished product;
step five: injecting an auxiliary agent on the printing layer of the first-stage semi-finished product and then attaching the adhesive layer of the second-stage semi-finished product;
step six: and extruding the bubbles out of the outer surface of the first-stage semi-finished product and the second-stage semi-finished product after compounding, and sequentially laminating, drying and cooling to prepare the PU double-layer crystal mirror surface leather.
3. The method for bonding PU double-layer crystal mirror leather according to claim 2, wherein: in the first step: firstly, pre-wetting a base cloth, and after pre-wetting, squeezing and ironing to keep the moisture content of the base cloth at 80% -95%; and then, coating the wet PU slurry on the soaked base fabric, and sequentially performing solidification, washing and drying to prepare the wet PU base material.
4. The method for bonding PU double-layer crystal mirror leather according to claim 3, wherein: and pre-wetting the base cloth by using a pre-wetting liquid.
5. The method for bonding PU double-layer crystal mirror leather according to claim 4, wherein: the pre-wetting solution is 10-25% of DMF aqueous solution.
6. The method for bonding PU double-layer crystal mirror leather according to claim 1, wherein: the printing layer is a double-color printing layer.
CN202111597867.6A 2021-12-24 2021-12-24 PU double-layer crystal mirror surface leather and laminating method thereof Pending CN114517416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111597867.6A CN114517416A (en) 2021-12-24 2021-12-24 PU double-layer crystal mirror surface leather and laminating method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111597867.6A CN114517416A (en) 2021-12-24 2021-12-24 PU double-layer crystal mirror surface leather and laminating method thereof

Publications (1)

Publication Number Publication Date
CN114517416A true CN114517416A (en) 2022-05-20

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Application Number Title Priority Date Filing Date
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Country Status (1)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073389A1 (en) * 1981-08-28 1983-03-09 Bayer Ag Coating and finishing agent for leather, and leather substitute based on a polyurethane-polyurea coating composition
CN205804016U (en) * 2016-05-30 2016-12-14 东莞市盛国仿真皮革技术有限公司 A kind of PU crystal minute surface bonding structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073389A1 (en) * 1981-08-28 1983-03-09 Bayer Ag Coating and finishing agent for leather, and leather substitute based on a polyurethane-polyurea coating composition
CN205804016U (en) * 2016-05-30 2016-12-14 东莞市盛国仿真皮革技术有限公司 A kind of PU crystal minute surface bonding structure

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