PU (Polyurethane) composite leather and preparation method thereof

A leather and lamination technology, applied in the direction of coating, textiles and papermaking, etc., can solve the problems of poor surface quality, etc., and achieve the effects of improving uneven coating, improving product life, no air bubbles and excellent abrasion resistance

Pending Publication Date: 2021-11-05
SEIREN SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the defective of prior art, provide a kind of PU composite leather, comprise base fabric layer, bonding layer, surface layer and surface treatment layer, by improving the component of surface treatment layer, make its surface layer can Improve the problems of coating bubbles and poor surface quality

Method used

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  • PU (Polyurethane) composite leather and preparation method thereof
  • PU (Polyurethane) composite leather and preparation method thereof
  • PU (Polyurethane) composite leather and preparation method thereof

Examples

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Effect test

preparation example Construction

[0039] The present invention also provides a preparation method for preparing the synthetic leather, the preparation method comprising the following steps:

[0040] S1 surface layer production, surface layer 3 production includes preparation of surface layer solution, surface layer solution defoaming treatment, surface layer solution coating process and surface layer drying molding to obtain surface layer 3; the stirring speed of the prepared surface layer solution is 350rpm ~450rpm, the stirring time is 60min~65min, the viscosity of the surface layer solution is 2000cps~3000cps.

[0041] The treatment time for the degassing treatment of the surface layer solution in step S1 is 60 minutes to 65 minutes. The prepared surface layer solution is defoamed with a circulating defoaming machine to fully ensure the defoaming effect, so that air can be prevented from entering the surface layer solution during the transportation process during recycling, so as to improve the coating qual...

Embodiment 1

[0049] The preparation method of a PU synthetic leather provided in this embodiment: first prepare the release paper mold and the base cloth layer; the production environment temperature is 0° C. to 40° C., and the production environment humidity is 20% to 80%.

[0050] S1 surface layer is made, according to each material component of this surface layer 3, select mass percent to be 57.4% polyurethane, 13.9% inorganic pigment iron oxide and carbon black, the surplus is the dissolution medium MEK and DMF to prepare surface layer solution; The prepared surface The stirring speed of the layer solution is 350rpm-450rpm, the stirring time is 60min-65min, and the viscosity of the surface layer solution is 2000cps-3000cps; the surface layer solution is fully defoamed, and the treatment time is 60min-65min; the surface layer solution coating process The speed is 9m / min, and the usage is 35g / m 2 ~45g / m 2 ; The surface layer is dried and molded at a temperature of 100°C to 125°C for 3 m...

Embodiment 2

[0058] Another kind of PU synthetic leather provided in this embodiment and its preparation method differ from Embodiment 1 in that:

[0059] S1 surface layer is made, according to each material component of this surface layer 3, select mass percentage to be 50.4% polyurethane, 1.7% bridging agent carbodiimide, 8.0% basic tackifier, 16.5% inorganic pigment iron oxide and carbon black, the balance is the dissolution medium MEK and DMF to prepare the surface layer solution; the stirring speed of the prepared surface layer solution is 350rpm~450rpm, the stirring time is 60min~65min, and the viscosity of the surface layer solution obtained is 2000cps~3000cps; the surface layer solution is Sufficient defoaming treatment, the treatment time is 30min~35min; the speed of surface layer solution coating processing is 10m / min, and the usage amount is 30g / m 2 ~35g / m 2 ; The surface layer is dried and molded at a temperature of 100°C to 125°C for 3 minutes.

[0060] S2 Adhesive Layer Pro...

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Abstract

The invention provides PU (polyurethane) composite leather which comprises a leather blank and a surface treatment layer. The components of the surface treatment layer comprise polyurethane, a bridging agent, a tackifier and a smoothing agent; the leather blank comprises a base cloth layer, a bonding layer and a surface layer; and the material components of the blank comprise polyurethane, a dissolving medium, a hardening agent, a catalyst, a solvent, a flame retardant, a pigment and the like. The invention also provides a preparation method of the composite leather. The preparation method comprises the following steps of preparing the surface layer, preparing the bonding layer, bonding the surface layer, the bonding layer and the base cloth layer together, stripping, curing and treating the surface layer. According to the PU composite leather obtained through the preparation method, the dispersity and the leveling property of the raw materials are fully exerted, the mesh surface of the product is free of black spots and uneven coating, a hand feeling agent is evenly dispersed and free of bubbles, the abradability is excellent, and then the flatness and the high yield of the product are achieved.

Description

technical field [0001] The invention relates to the technical field of polyurethane composite material preparation, in particular to a PU composite leather and a preparation method of the PU composite leather. Background technique [0002] The color and decoration design of automobile interior needs to fully consider the needs of human nature. The quality of the interior is mainly reflected in the color, texture, luster, material, and appearance decoration of the interior parts, so as to create a safe, comfortable and pleasant driving environment for customers. Take advantage of the space, and then create a high-quality feeling, which has become an important means to win customers. In recent years, with the development of social economy and the transformation of market supply and demand, consumers' consumption concept of passenger cars has also changed. In addition to the demand for car functions, the choice of cars has more personal preference. In terms of quality and cult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/145D06N3/0059D06N3/0056D06N3/0077D06N3/0006D06N2209/1685D06N2211/28D06N2213/03
Inventor 胡超群
Owner SEIREN SUZHOU CO LTD
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