CN217319662U

CN217319662U - Water-based solvent-free polyurethane synthetic leather with stress discoloration effect

Info

Publication number: CN217319662U
Application number: CN202221060243.0U
Authority: CN
Inventors: 宋远周
Original assignee: Hengye Times Zhejiang New Material Technology Co ltd
Current assignee: Hengye Times Zhejiang New Material Technology Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-30
Anticipated expiration: 2032-05-06

Abstract

The utility model discloses a waterborne solvent-free polyurethane synthetic leather with stress discoloration effect, including regenerated fiber elasticity base cloth layer, no solvent foaming layer, restoration layer, waterborne stress discoloration layer and organosilicon inoxidizing coating, the upper surface coating on regenerated fiber elasticity base cloth layer has the waterborne adhesive linkage, the upper surface bonding on solvent-free foaming layer has the restoration layer, the upper surface bonding on restoration layer has waterborne stress discoloration layer, the upper surface coating organosilicon inoxidizing coating on waterborne stress discoloration layer. This waterborne solventless polyurethane synthetic leather with stress discoloration effect through the mode with traditional solvent type polyurethane replacement for waterborne polyurethane for the environmental protection performance of synthetic leather promotes greatly, and the synthetic leather degree that discolours when the pressurized more even, adopts aliphatic sulfonic acid type waterborne polyurethane material to make the mode of waterborne adhesive linkage simultaneously, makes to possess the leather and possesses the full dry performance of pasting, reduces the pollution of glue to cloth and environment.

Description

Waterborne solvent-free polyurethane synthetic leather with stress discoloration effect

Technical Field

The utility model relates to a synthetic leather technical field specifically is a waterborne solventless polyurethane synthetic leather with stress discoloration effect.

Background

Along with the rapid development of economy, the consumption level of people is continuously improved, the requirement of consumers on the quality of living goods is higher and higher, the environmental protection requirement is also improved day by day, the leather texture is pursued, and meanwhile, the single color can not meet the appreciation taste and the consumption requirement which are improved day by day of people, therefore, in order to meet the requirement of consumers, the synthetic leather which can change color appears in the market, when the stress generates deformation, the color of the leather surface changes, but the existing color-changing leather in the market is solvent type polyurethane synthetic leather, the environmental protection performance is poor, meanwhile, due to the simple structure, the problem that the appearance of clothes is not attractive and controllable due to nonuniform color change exists, meanwhile, the scratch resistance and the wear resistance of the color-changing leather are poor due to the material characteristics, and the color-changing leather is not suitable for being used as clothes worn for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterborne solventless polyurethane synthetic leather with stress discoloration effect to the discolour inequality and scrape resistant and the relatively poor problem of wear resistance that provide in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a waterborne solvent-free polyurethane synthetic leather with stress discoloration effect, includes regenerated fiber elasticity base cloth layer, no solvent foaming layer, recovery layer, waterborne stress discoloration layer and organosilicon inoxidizing coating, the upper surface coating on regenerated fiber elasticity base cloth layer has the waterborne adhesive linkage, the upper surface coating on waterborne adhesive linkage has no solvent foaming layer, the upper surface bonding on no solvent foaming layer has the recovery layer, the upper surface bonding on recovery layer has waterborne stress discoloration layer, the upper surface coating organosilicon inoxidizing coating on waterborne stress discoloration layer.

Preferably, the regenerated fiber elastic base cloth layer comprises a central line, a reinforcing line, a polyurethane rubber block and regenerated fiber cloth.

By adopting the technical scheme, the regenerated fiber elastic base fabric layer can enhance the scratch resistance and the friction resistance of the synthetic leather.

Preferably, a central line is placed on the outer surface of the regenerated fiber cloth, and the reinforcing line penetrates through the outer surface of the regenerated fiber cloth.

By adopting the technical scheme, the reinforcing line can fix the central line.

Preferably, the adjacent reinforcing lines are arranged in an X-shaped cross shape, and 2 overlapping portions of the reinforcing lines are attached to the lower surface of the center line, and the center line is located between the 2 overlapping portions of the reinforcing lines and the regenerated fiber cloth.

By adopting the technical scheme, the polyurethane rubber block can fix the central line on the outer surface of the regenerated fiber cloth and can not move randomly.

Preferably, the outer surface of the solvent-free foaming layer is uniformly distributed with foam cells, and the foam cells are distributed on the outer surface of the solvent-free foaming layer in a net shape.

By adopting the technical scheme, the air permeability of the synthetic leather can be enhanced by the foam holes.

Preferably, the recovery layer includes fulcrum rubber column, resilience rubber column and rubber elastic band, resilience rubber column evenly distributed is around the fulcrum rubber column, and the height of resilience rubber column is less than the fulcrum rubber column to be connected with the rubber elastic band between fulcrum rubber column and the resilience rubber column, fulcrum rubber column and resilience rubber column all bond at the upper surface on solvent-free foaming layer.

By adopting the technical scheme, the fulcrum rubber column and the resilience rubber column can keep the mutual distance under the pulling of the rubber elastic band, so that the recovery layer can enhance the tensile property of the synthetic leather.

Compared with the prior art, the beneficial effects of the utility model are that: the aqueous solvent-free polyurethane synthetic leather with the stress discoloration effect comprises the following components:

1. the environment-friendly performance of the synthetic leather is greatly improved by replacing the traditional solvent type polyurethane with the waterborne polyurethane, the discoloration degree of the synthetic leather is more uniform when the synthetic leather is pressed, and the leather has full dry-adhesion performance by adopting the mode of preparing the waterborne adhesive layer from the aliphatic sulfonic acid type waterborne polyurethane material, so that the pollution of the glue to cloth and the environment is reduced;

2. the solvent-free polyurethane resin material is used for preparing the solvent-free foaming layer, so that the solvent-free foaming layer can enable the air permeability of leather to be stronger through the uniform and fine foam pores which form a reticular structure on the surface of the solvent-free foaming layer, and clothes can be worn more comfortably;

3. through the connection of rubber elastic band to fulcrum rubber post and resilience rubber post, can support each other through the rubber elastic band when making fulcrum rubber post and resilience rubber post atress heeled, thereby make the holistic resilience effect of leather better, the tensile strength who has guaranteed the leather is stronger, carry out fixed mode to the anchor strut through the polyurethane block simultaneously, make the polyurethane block direct with the object contact when strengthening the anchor strut, make scraping-resistant and the wear resistance of synthetic leather strengthen greatly.

Drawings

FIG. 1 is a schematic overall front sectional view of the present invention;

FIG. 2 is a schematic top view of the solvent-free foamed layer of the present invention;

fig. 3 is a schematic top view of the restoration layer of the present invention;

fig. 4 is a schematic view of the regenerated fiber elastic base fabric layer of the present invention.

In the figure: 1. a regenerated fiber elastic base cloth layer; 11. a centerline; 12. a reinforcement line; 13. a polyurethane glue block; 14. regenerating fiber cloth; 2. an aqueous adhesive layer; 3. a solvent-free foamed layer; 4. cells; 5. a recovery layer; 51. a fulcrum rubber column; 52. a resilient rubber column; 53. a rubber elastic band; 6. an aqueous stress discoloration layer; 7. and an organic silicon protective layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a water-based solvent-free polyurethane synthetic leather with stress discoloration effect comprises a regenerated fiber elastic base cloth layer 1, a central line 11, reinforcing lines 12, polyurethane rubber blocks 13, regenerated fiber cloth 14, a water-based bonding layer 2, a solvent-free foaming layer 3, foam holes 4, a recovery layer 5, a fulcrum rubber column 51, a rebound rubber column 52, a rubber elastic belt 53, a water-based stress discoloration layer 6 and an organic silicon protective layer 7, wherein the water-based bonding layer 2 is coated on the upper surface of the regenerated fiber elastic base cloth layer 1, the regenerated fiber elastic base cloth layer 1 comprises the central line 11, the reinforcing lines 12, the polyurethane rubber blocks 13 and the regenerated fiber cloth 14, the central line 11 is arranged on the outer surface of the regenerated fiber cloth 14, the reinforcing lines 12 penetrate through the outer surface of the regenerated fiber cloth 14, the adjacent reinforcing lines 12 are arranged in an X-shaped cross shape, and the overlapped part of the 2 reinforcing lines 12 is attached to the lower surface of the central line 11, and the central line 11 is located between the overlapped part of the 2 reinforcing lines 12 and the regenerated fiber cloth 14, the reinforcing lines 12 are fixed on the upper surface of the regenerated fiber cloth 14 through the intersection, then the polyurethane rubber block 13 is formed at the intersection of the reinforcing lines 12 in a molten polyurethane dripping mode for fixing, so that the reinforcing lines 12 can rub with an object through the polyurethane rubber block 13, and the whole scratch resistance and wear resistance are enhanced, wherein the thickness of the regenerated fiber elastic base cloth layer 1 is 0.5-1.2mm, the warp elongation is 60-80%, and the weft elongation is 70-90%.

As shown in fig. 1 and 4, the upper surface of the aqueous adhesive layer 2 is coated with the solvent-free foaming layer 3, the outer surface of the solvent-free foaming layer 3 is uniformly distributed with the cells 4, and the cells 4 are distributed on the outer surface of the solvent-free foaming layer 3 in a net shape, the aqueous adhesive layer 2 is utilized to enable the regenerated fiber elastic base fabric layer 1 and the solvent-free foaming layer 3 to have good full-dry-adhesion performance, and the synthetic leather has good air permeability and moisture absorption performance through the cells 4 which are uniformly and finely distributed on the solvent-free foaming layer 3 and form a net structure, wherein the aqueous adhesive layer 2 is made of aliphatic sulfonic acid type aqueous polyurethane material, the thickness of the aqueous adhesive layer 2 is 0.12-0.25mm, and the thickness of the solvent-free foaming layer 3 is 0.15-0.5 mm.

As shown in fig. 1-3, a recovery layer 5 is bonded on the upper surface of a solvent-free foamed layer 3, a water-based stress color-changing layer 6 is bonded on the upper surface of the recovery layer 5, a silicone protective layer 7 is coated on the upper surface of the water-based stress color-changing layer 6, the recovery layer 5 comprises a fulcrum rubber column 51, a rebound rubber column 52 and a rubber elastic band 53, the rebound rubber column 52 is uniformly distributed around the fulcrum rubber column 51, the height of the rebound rubber column 52 is smaller than that of the fulcrum rubber column 51, a rubber elastic band 53 is connected between the fulcrum rubber column 51 and the rebound rubber column 52, the fulcrum rubber column 51 and the rebound rubber column 52 are both bonded on the upper surface of the solvent-free foamed layer 3, and the fulcrum rubber column 51 and the rebound rubber column 52 can be maintained under the action of the rubber elastic band 53 by using the mode that the rebound rubber column 52 is hexagonally distributed around the fulcrum rubber column 51, so that the fulcrum rubber column 51 can be connected with the rebound rubber column 52 through the rubber elastic band 53 when the synthetic leather is pulled, and the synthetic leather can maintain the fulcrum rubber column 51 The thickness of the restoring layer 5 is 0.08-0.2mm, the thickness of the water-based stress color changing layer 6 is 0.1-0.25mm, the water-based stress color changing layer 6 is made of water-based polyurethane color changing resin materials, the organic silicon protective layer 7 is made of addition type organic silicon materials, and the thickness of the organic silicon protective layer 7 is 0.05-0.15 mm.

The working principle is as follows: when the water-based solvent-free polyurethane synthetic leather with the stress color-changing effect is used, firstly, when the regenerated fiber elastic base cloth layer 1 is in contact with an external object, the polyurethane rubber block 13 replaces the mode that the central line 11 and the reinforcing line 12 are in contact with the external object, so that the abrasion of the regenerated fiber cloth 14, the central line 11 and the reinforcing line 12 is reduced, the integral abrasion resistance of the synthetic leather is enhanced, the solvent-free foaming layer 3 bonded with the regenerated fiber elastic base cloth layer 1 through the water-based bonding layer 2 has good air permeability through the foam hole 4, when the synthetic leather is pulled by an external force, the distance between the fulcrum rubber column 51 and the rebound rubber column 52 is kept under the action of the rubber elastic belt 53 in the recovery layer 5, so that the integral tensile property is enhanced, and simultaneously, the water-based stress color-changing layer 6 is deformed by the water-based color-changing resin when being stretched or extruded, so that the color is changed, gives a natural and soft feeling to people, and the organic silicon protective layer 7 ensures that the leather has good heat-resistant and corrosion-resistant performance, thereby increasing the overall practicability.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a waterborne solvent-free polyurethane synthetic leather with stress discoloration effect, includes regenerated fiber elasticity base cloth layer (1), no solvent foaming layer (3), recovery layer (5), waterborne stress discoloration layer (6) and organosilicon inoxidizing coating (7), its characterized in that: the upper surface coating of regenerated fiber elasticity base cloth layer (1) has waterborne adhesive linkage (2), the upper surface coating of waterborne adhesive linkage (2) has no solvent foaming layer (3), the upper surface bonding of no solvent foaming layer (3) has recovery layer (5), the upper surface gluing of recovery layer (5) has waterborne stress discoloration layer (6), upper surface coating organosilicon inoxidizing coating (7) of waterborne stress discoloration layer (6).

2. The aqueous solvent-free polyurethane synthetic leather with stress discoloration effect according to claim 1, wherein: the regenerated fiber elastic base cloth layer (1) comprises a central line (11), reinforcing lines (12), polyurethane rubber blocks (13) and regenerated fiber cloth (14).

3. The aqueous solvent-free polyurethane synthetic leather with stress discoloration effect according to claim 2, wherein: the center line (11) is placed on the outer surface of the regenerated fiber cloth (14), and the reinforcing lines (12) penetrate through the outer surface of the regenerated fiber cloth (14).

4. The aqueous solvent-free polyurethane synthetic leather with stress discoloration effect according to claim 2, wherein: the adjacent reinforcing lines (12) are arranged in an X-shaped cross shape, the overlapped part of 2 reinforcing lines (12) is attached to the lower surface of the central line (11), and the central line (11) is positioned between the overlapped part of 2 reinforcing lines (12) and the regenerated fiber cloth (14).

5. The aqueous solvent-free polyurethane synthetic leather with stress discoloration effect according to claim 1, wherein: the outer surface of the solvent-free foaming layer (3) is uniformly distributed with foam cells (4), and the foam cells (4) are distributed on the outer surface of the solvent-free foaming layer (3) in a net shape.

6. The aqueous solvent-free polyurethane synthetic leather with stress discoloration effect according to claim 1, wherein: resume layer (5) including fulcrum rubber column (51), resilience rubber column (52) and rubber elastic band (53), resilience rubber column (52) evenly distributed is around fulcrum rubber column (51), and the height of resilience rubber column (52) is less than fulcrum rubber column (51) to be connected with rubber elastic band (53) between fulcrum rubber column (51) and resilience rubber column (52), fulcrum rubber column (51) and resilience rubber column (52) all bond at the upper surface of no solvent foaming layer (3).