CN214188762U - Water-based surface treatment synthetic leather - Google Patents

Abstract

The utility model discloses a waterborne surface treatment synthetic leather, follow supreme basic unit, cotton gauze layer, waterproof layer, waterborne polyurethane foam layer and the waterborne knurling superficial layer of being equipped with in proper order down, the top outer wall equidistance of waterproof layer be provided with the arch, the bottom outer wall equidistance on waterborne polyurethane layer be provided with the recess, recess and protruding cooperation. In addition, the polyester fiber filled in the weft holes, the warp holes and the inner cavities of the weft holes and the warp holes forms a polyester fiber net in the base layer, so that the kneading resistance and the extension resistance of the base layer are improved, the tolerance of the leather is improved, and the service life of the leather is prolonged; the air holes are formed in the water-based polyurethane layer and can improve the circulation and discharge of air between the water-based polyurethane layer and the water-based polyurethane foam layer, so that the damage of air pressure generated by acting force on the water-based polyurethane layer is reduced, and the service life of the water-based polyurethane layer is prolonged.

Description

Water-based surface treatment synthetic leather

Technical Field

The utility model belongs to the technical field of the leather, it is specific, relate to a waterborne surface treatment synthetic leather.

Background

Leather is a material commonly used in daily life, and is used in various aspects such as wearing caps and furniture manufacture. Leather can be classified into genuine leather, reclaimed leather, artificial leather, and synthetic leather according to the manufacturing method. Among them, artificial leather is widely used to make various leather products or to replace a part of genuine leather materials because of its high workability.

In order to improve the aesthetic property of the appearance of the leather, various patterns such as crocodile-like patterns, ostrich-like patterns, snake-like patterns or brand logos are pressed on the surface of the leather through a steel pattern plate, so that the leather has more various appearances. However, the existing embossed leather is usually made of PVC material or oily PU material, and is only structurally formed by a PVC material layer or an oily PU material layer and a composite base layer. The above materials processed to form embossed leather have the following disadvantages: during the production process, the plasticizer is released or contains harmful components, which is harmful to the health of people and pollutes the environment. And waterborne polyurethane then has pollution-free, safe and reliable, the characteristics of easy modification, consequently, the utility model discloses utilize waterborne polyurethane resin as the knurling layer of leather, solve above-mentioned problem, but adopt waterborne polyurethane can bring new problem for the leather, like waterborne polyurethane's water proofness is low for the leather is very easily infringed by water, has shortened the life of leather, consequently, the utility model discloses consider from the comprehensive properties of leather, obtained a waterborne surface treatment's leather, had both had waterborne polyurethane's performance, had fine comprehensive properties again.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterborne surface treatment synthetic leather.

The utility model discloses the technical problem who needs to solve does: 1. the embossing layer is made of a PVC material layer or an oily PU material which is easy to cause harm, and is made of a water-based polyurethane foam material; 2. the water resistance problem of leather caused by the adoption of the water-based polyurethane foam layer is solved by introducing a waterproof layer; 3. the problem of adhesion between the aqueous polyurethane foam layer and the waterproof layer; 4. how to improve the service life of the leather.

The purpose of the utility model can be realized by the following technical scheme:

an aqueous surface treatment synthetic leather comprises a base layer, a cotton gauze layer, a waterproof layer, an aqueous polyurethane foam layer and an aqueous embossing surface layer;

the waterproof layer is arranged on the top of the cotton gauze layer and used for protecting the base layer and the cotton gauze layer, preventing the base layer and the cotton gauze layer from being invaded and corroded by water, accelerating the aging speed of the base layer and the cotton gauze layer and prolonging the service life of the base layer and the cotton gauze layer;

the waterproof layer is characterized in that bulges are arranged on the outer wall of the top of the waterproof layer at equal intervals, grooves are arranged on the outer wall of the bottom of the water-based polyurethane layer at equal intervals, the grooves are matched with the bulges, when the waterproof layer is acted by an external force, a part of the acting force between the waterproof layer and the water-based polyurethane layer can be consumed through the grooves and the bulges, the acting force between the waterproof layer and the water-based polyurethane layer is reduced, the durability of the waterproof layer and the water-based polyurethane layer is improved, and the service life of the leather is further prolonged;

the top on waterborne polyurethane layer be provided with waterborne polyurethane foam layer, waterborne polyurethane layer can buffer the waterborne polyurethane foam layer and harm the waterproof layer when receiving the effort, in addition, the molecular structure on waterborne polyurethane layer and waterborne polyurethane foam layer is similar, has fine adsorption affinity between them, can bond waterborne polyurethane foam layer and waterproof layer well, the top on waterborne polyurethane foam layer adhere to one deck waterborne knurling superficial layer.

Furthermore, the base layer is internally provided with weft holes and warp holes, the weft holes and the warp holes are staggered with each other, the inner cavities of the weft holes and the warp holes are filled with polyester fibers, and the polyester fibers filled in the weft holes, the warp holes and the inner cavities form a polyester fiber net in the base layer, so that the kneading resistance and the extension resistance of the base layer are improved, the ageing resistance of the base layer is improved, and the service life of the leather is further prolonged.

Furthermore, the cotton gauze layer is formed by weaving warp cotton yarns and weft cotton yarns and has good air permeability and flexibility.

Furthermore, the waterproof layer is made of antioxidant modified and reinforced polyethylene resin, so that the ageing resistance of the waterproof layer is improved, and the service life of the leather is further prolonged.

Furthermore, in order to slow down the damage to the waterborne polyurethane layer when the waterborne polyurethane foam layer receives the effort, the inside on waterborne polyurethane layer be equipped with a plurality of gas pockets, the gas pocket run through the top on waterborne polyurethane layer and with waterborne polyurethane foam layer bottom intercommunication, the gas pocket can improve the circulation and the discharge of gas between waterborne polyurethane layer and waterborne polyurethane foam layer to reduce the harm of atmospheric pressure that produces when the waterborne polyurethane foam layer receives the effort to the waterborne polyurethane layer, improve the life on waterborne polyurethane layer, and then the life of extension leather.

Furthermore, the pore diameter of the air hole is 4-8 μm.

Further, after the printing and embossing treatment is carried out on the water-based surface treatment synthetic leather, an embossing pattern is formed on the water-based polyurethane foam layer and the water-based embossing surface layer.

The utility model has the advantages that:

1. the weft holes and the warp holes are formed in the base layer, and the polyester fiber net is formed in the base layer through the weft holes, the warp holes and the polyester fibers filled in the inner cavities of the weft holes and the warp holes, so that the kneading resistance and the extension resistance of the base layer are improved, the tolerance of the leather is improved, and the service life of the leather is prolonged;

2. a cotton gauze layer is arranged on the base layer, the cotton gauze layer bears the acting force during embossing, and the leather has the characteristic of being suitable for post-processing due to the expansion characteristic of the cotton gauze layer;

3. the waterproof layer is arranged on the cotton gauze layer, the waterproof property and the oxidation resistance of the polyethylene resin are enhanced by modifying the antioxidant, the base layer and the cotton gauze layer are protected from being damaged by water, the service life of the leather is prolonged, the hydrophilicity of the surface of the leather and the waterproof property of the bottom layer are both considered, the surface clean water of the leather is easy to clean, and the waterproof durability of the bottom layer is fully exerted.

4. The waterproof layer is provided with the water-based polyurethane layer, the water-based polyurethane layer and the water-based polyurethane foam layer have good adsorption force due to the fact that the molecular structures of the water-based polyurethane layer and the water-based polyurethane foam layer are similar, the water-based polyurethane layer and the waterproof layer can be well bonded, and in addition, the water-based polyurethane layer buffers the damage of acting force on the waterproof layer.

5. The air holes are formed in the water-based polyurethane layer and can improve the circulation and discharge of air between the water-based polyurethane layer and the water-based polyurethane foam layer, so that the damage of air pressure generated when the water-based polyurethane foam layer is acted by an acting force on the water-based polyurethane layer is reduced, and the service life of the water-based polyurethane layer is prolonged.

6. A water-based embossing surface treatment layer is attached to the water-based polyurethane layer to protect the water-based polyurethane layer, so that the leather is brighter in gloss and better in simulation effect.

To sum up, the utility model relates to a waterborne surface treatment synthetic leather does not produce harmful substance at the knurling in-process, and is safe harmless, environmental protection, and has fine ground waterproof nature, ageing resistance.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a water-based surface-treated synthetic leather according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1;

fig. 4 is a schematic structural diagram of a base layer of the water-based surface treatment synthetic leather of the present invention.

In the figure: 1. a base layer; 11. a weft hole; 12. passing through the hole; 2. a cotton gauze layer; 21. warp cotton yarn; 22. weft cotton yarn; 3. a waterproof layer; 4. an aqueous polyurethane layer; 41. air holes; 5. an aqueous polyurethane foam layer; 6. An aqueous embossed surface layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

An aqueous surface treatment synthetic leather is shown in figures 1-4 and comprises a base layer 1, a cotton gauze layer 2, a waterproof layer 3, an aqueous polyurethane layer 4, an aqueous polyurethane foam layer 5 and an aqueous embossing surface layer 6;

as shown in fig. 4, the base layer 1 is internally provided with weft holes 11 and warp holes 12, the weft holes 11 and the warp holes 12 are staggered with each other, the inner cavities of the weft holes 11 and the warp holes 12 are filled with polyester fibers, and the polyester fibers filled in the weft holes 11, the warp holes 12 and the inner cavities thereof form a polyester fiber net in the base layer 1, so that the kneading resistance and the extension resistance of the base layer 1 are improved, the aging resistance of the base layer is improved, and the service life of the leather is further prolonged;

as shown in fig. 1, the cotton gauze layer 2 is arranged on the top of the base layer 1, and as shown in fig. 3, the cotton gauze layer 2 is woven by warp cotton yarns 21 and weft cotton yarns 22, and has good air permeability and flexibility; the waterproof layer 3 is arranged on the top of the cotton gauze layer 2 and is used for protecting the base layer 1 and the cotton gauze layer 2, preventing the base layer 1 and the cotton gauze layer 2 from being invaded and corroded by water, accelerating the aging speed of the base layer 1 and the cotton gauze layer 2 and prolonging the service life of the base layer 1 and the cotton gauze layer 2;

as shown in fig. 1, the top outer wall of the waterproof layer 3 is provided with protrusions at equal intervals, the bottom outer wall of the aqueous polyurethane layer 4 is provided with grooves at equal intervals, the grooves are matched with the protrusions, when the waterproof layer 3 and the aqueous polyurethane layer 4 are acted by external force, part of the acting force between the waterproof layer 3 and the aqueous polyurethane layer 4 can be consumed through the grooves and the protrusions, the acting force between the waterproof layer 3 and the aqueous polyurethane layer 4 is reduced, the durability of the waterproof layer 3 and the aqueous polyurethane layer 4 is improved, the waterproof layer 3 is made of antioxidant modified and reinforced polyethylene resin, and the service life of leather is further prolonged;

as shown in fig. 1 and 2, the top of the aqueous polyurethane layer 4 is provided with an aqueous polyurethane foam layer 5, the aqueous polyurethane layer 4 can buffer the damage of the aqueous polyurethane foam layer 5 to the waterproof layer 3 when the aqueous polyurethane foam layer 5 is acted by a force, in addition, the molecular structures of the aqueous polyurethane layer 4 and the aqueous polyurethane foam layer 5 are similar, a good adsorption force is provided between the aqueous polyurethane layer 4 and the aqueous polyurethane foam layer 5, the aqueous polyurethane foam layer 5 and the waterproof layer 3 can be well adhered, in order to reduce the damage of the air pressure generated when the aqueous polyurethane foam layer 5 is acted by a force to the aqueous polyurethane layer 4, a plurality of air holes 41 are arranged inside the aqueous polyurethane layer 4, the air holes 41 penetrate through the top of the aqueous polyurethane layer 4 and are communicated with the bottom of the aqueous polyurethane foam layer 5, the air holes 41 can improve the circulation and the discharge of air between the aqueous polyurethane layer 4 and the aqueous polyurethane foam layer 5, thereby reducing the damage of the aqueous polyurethane layer 4 caused by the air pressure generated when the aqueous polyurethane foam layer 5 is acted by a force, the service life of the waterborne polyurethane layer 4 is prolonged, and the aperture of the air hole 41 is 4-8 mu m; waterborne polyurethane foam layer 5's top adhere to one deck waterborne knurling superficial layer 6, carry out the printing knurling and handle the back, form the knurling pattern at waterborne polyurethane foam layer 5 and waterborne knurling superficial layer 6, used knurling pattern can design by oneself or conventional knurling pattern as required, the utility model discloses in no longer describe repeatedly.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims (8)

1. The water-based surface treatment synthetic leather is characterized by comprising a base layer (1), a cotton gauze layer (2), a waterproof layer (3), a water-based polyurethane layer (4), a water-based polyurethane foam layer (5) and a water-based embossing surface layer (6);

the cotton gauze layer (2) is arranged on the top of the base layer (1), and the waterproof layer (3) is arranged on the top of the cotton gauze layer (2);

the top outer wall equidistance of waterproof layer (3) is provided with the arch, the bottom outer wall equidistance of waterborne polyurethane layer (4) is provided with the recess, the top of waterborne polyurethane layer (4) is provided with waterborne polyurethane foam layer (5), one deck waterborne knurling superficial layer (6) is adhered to at the top of waterborne polyurethane foam layer (5).

2. An aqueous surface treatment synthetic leather according to claim 1, wherein the base layer (1) is internally provided with weft holes (11) and warp holes (12).

3. The waterborne surface treatment synthetic leather according to claim 2, wherein the weft holes (11) and the warp holes (12) are staggered with each other, and the inner cavities of the weft holes (11) and the warp holes (12) are filled with polyester fibers.

4. The aqueous surface treatment synthetic leather according to claim 1, wherein the cotton gauze layer (2) is woven by warp cotton yarns (21) and weft cotton yarns (22).

5. An aqueous surface treatment synthetic leather according to claim 1, wherein the aqueous polyurethane layer (4) is provided with a plurality of air holes (41) inside.

6. An aqueous surface treatment synthetic leather according to claim 5, wherein the air holes (41) penetrate through the top of the aqueous polyurethane layer (4) and are communicated with the bottom of the aqueous polyurethane foam layer (5).

7. The aqueous surface treatment synthetic leather according to claim 5, wherein the pore diameter of the air holes (41) is 4-8 μm.

8. The aqueous surface treatment synthetic leather of claim 1, wherein the grooves and the protrusions are matched.

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