	US 11,938,704 B2
	Method for preparing composite material containing ultra-wear-resistant and easy-to-clean PVC pre-coating film
XinXiong Li, Changsha (CN); He Nian Long, Changsha (CN); Hui Li, Changsha (CN); DongMing Zhang, Changsha (CN); Shizhen Li, Changsha (CN); and XiuLin Deng, Changsha (CN)
Assigned to Banfert New Materials Co., Ltd.
Filed by Banfert New Materials Co., Ltd., Changsha (CN)
Filed on Sep. 22, 2020, as Appl. No. 17/027,800.
Application 17/027,800 is a continuation of application No. PCT/CN2019/120506, filed on Nov. 25, 2019.
Prior Publication US 2021/0154986 A1, May 27, 2021
Int. Cl. B32B 27/30 (2006.01); B32B 37/10 (2006.01); B32B 37/16 (2006.01); C08J 5/12 (2006.01); C08J 5/18 (2006.01); E04F 15/10 (2006.01)

CPC B32B 27/304 (2013.01) [B32B 37/10 (2013.01); C08J 5/121 (2013.01); C08J 5/18 (2013.01); E04F 15/105 (2013.01); E04F 15/107 (2013.01); B32B 37/16 (2013.01); B32B 2255/26 (2013.01); B32B 2307/584 (2013.01); B32B 2327/06 (2013.01); B32B 2471/00 (2013.01); C08J 2327/06 (2013.01)]

8 Claims

1. A method for preparing a composite material containing a PVC pre-coating film, comprising the following steps:

preparing the PVC pre-coating film by utilizing a PVC transparent film layer and a radiation-cured coating;

performing a high-temperature press fit process on the PVC pre-coating film, a substrate material and a printed decorative layer; and

performing cooling and forming treatment to obtain the composite material containing the PVC pre-coating film;

wherein the radiation-cured coating comprises an adhesive primer layer, an elastic primer layer and a top coating layer sequentially from bottom to top;

wherein preparation raw materials of the adhesive primer layer comprise 2 to 10 parts of bifunctional polyurethane acrylic resins (C), 0 to 5 parts of vinyl chloride-vinyl acetate resins, 30 to 40 parts of bifunctional acrylate monomers (C), 30 to 50 parts of solvents and 0 to 1 part of an initiator (C);

wherein preparation raw materials of the elastic primer layer comprise 30 to 60 parts of bifunctional polyurethane acrylic resins (C), 20 to 40 parts of bifunctional acrylate monomers (C), 10 to 15 parts of monofunctional acrylate (C) and 0 to 5 parts of initiators (C).