High laminating degree PU leather, and preparation method thereof

Abstract

The invention discloses a high laminating degree PU leather. The high laminating degree PU leather comprises a base cloth layer, a PU layer, and a coating decorative layer successively; an adhesive layer is arranged between the base cloth layer and the PU layer; the adhesive layer is prepared from a solvent-free PU adhesive; the coating decorative layer is a water- based coating decorative layer;the PU layer comprises two PU single layers; the PU layer comprises, by weight, 90 to 105 parts of PU resin, 62 to 72 parts of DMF, 12 to 16 parts of ethyl acetate, and 19 to 25 parts of color paste;the coating decorative layer comprises, by weight, 4 to 6 parts of a semi-bright delustering surface treatment agent, 4.5 to 6 parts of a delustering surface treatment agent, 0.5 to 0.8 part of a dryslide handfeel wear resisting agent, 0.6 to 0.75 part of a wet slide handfeel wear resisting agent, 0.6 to 0.85 part of a antifouling agent, 0.25 to 0.32 part of a levelling agent, 0.6 to 0.85 part ofa cross-linking agent, and 2.5 to 4 parts of industrial distilled water. A preparation method of the high laminating degree PU leather is capable of avoiding layering phenomenon after material heating force loading in coating moulding process of the PU material, and satisfying moulding requirements of irregular interior decorative parts in vehicles; and extremely excellent durability and fastnessare achieved.

Description

technical field [0001] The invention relates to the field of artificial leather, in particular to a high-fit PU leather and a preparation method thereof. Background technique [0002] The special performance and feel of leather make it synonymous with "high-end" in the decoration of bags, clothing, shoes, vehicles and furniture, and has been fully affirmed by the market. Many, incalculable. Due to the long production cycle and limited quantity of natural leather, artificial leather has become its substitute, and there are many types of artificial leather, and high-grade artificial leather is even more expensive than genuine leather. [0003] PU artificial leather is the epidermis of polyurethane composition, which is suitable for various decorations instead of genuine leather, with good shaping effect and bright surface. The manufacture of general PU leather includes base fabric treatment, rubber preparation, coating, lamination, surface treatment, coiling and other proces...

AI Technical Summary

Problems solved by technology

PU materials are prone to delamination after being heated and stressed during overmolding, which affects the user experience and weakens the high-end feel of the car interior; therefore, in terms of car door panel leather, a high degree of fit is required to ensure firm installation Degree, to ensure the service life, to ensure the car interior lasting high-end feeling

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