Rigid board plastic flooring and its production method

Abstract

The invention relates to a rigid board plastic flooring comprising a wear layer, a decoration layer, a first connecting layer and a bottom layer which are connected in sequence, and also relates to the production method thereof. The bottom layer of the flooring is prepared using extrusion molding without adding plasticizer. The product is therefore more environmentally friendly. The edge of the click product is not easily damaged during storage and transportation as the bottom layer comprises a plastic hard board and the strength of the click profile is strong.

We claim: 
     
         1 . A method of producing rigid board plastic flooring, wherein the bottom layer is molded through the extruding process; a wear layer, a decoration layer, a first connecting layer and a bottom layer are subjected to hot press under a certain temperature and pressure;
 a. Hot press: Overlap the back embossment board, the bottom layer, the first connecting layer, the decoration layer, the wear layer and the embossment board in sequence and implement hot press under a certain temperature and pressure;   b. UV coating and annealing: Apply UV treatment to the surface of the semi-finished product after step a, wherein the abrasion resistance is increased, and the product gains a glossy look. Annealing is then applied to the product and cool it when the product is heated to certain temperature. The product therefore has an appealing physical property.   c. Cutting: Cut to create products of the required sizes according to the needs of the customer.   d. Trimming/beveling/profiling the click product: Make the appearance of the product a resemblance of wood/stone flooring by trimming/beveling/profiling the click product according to the needs of the customer.   
     
     
         2 . The method of producing rigid board plastic flooring according to  claim 1 , wherein the aforementioned sound and shock absorbing layer is connected with the bottom surface of the aforementioned bottom layer by using the second connecting layer after UV coating and annealing. 
     
     
         3 . The method of producing rigid board plastic flooring according to  claim 1 , wherein the aforementioned bottom layer comprises PVC powder, a processing agent, internal lubricant, external lubricant, rare-earth stabilizer and calcium carbonate. 
     
     
         4 . The method of producing rigid board plastic flooring according to  claim 3 , wherein the aforementioned PVC powder, processing agent, internal lubricant, external lubricant, rare-earth stabilizer and calcium carbonate are 9.5-61.75%, 0-5.5%, 0.4-0.5%, 0.1-0.6%, 2.0-2.5% and 33.25-85.50% of the bottom layer respectively.