Technology for producing stone-plastic floor, and die head for producing floor substrate

Abstract

The invention specifically relate to a technology for producing a stone-plastic floor, and a die head for producing a floor substrate, and belongs to the technical fields of extrusion molding die heads and plastic floor production. The stone-plastic floor comprises a wearing layer, a glass fiber layer and a substrate, and the substrate comprises 80 parts of PVC, 210 parts of calcium powder, 8.3 parts of a calcium and zinc stabilizer, 4.8 parts of chlorinated polyethylene, 2.3 parts of acrylate and 1.6 parts of polyethylene wax. The die head for producing the floor substrate comprises an upperdie and a lower die, one end of the die head is a feed inlet, the other end of the die head is a molding port, the upper die is provided with a movable mouth, the upper die and the lower die are locked to form an extrusion channel, the movable mouth and the lower die are locked to form a molding cavity, the extrusion channel includes a preheating section and an extruding section, the preheating section and the extruding section extend toward two sides of a die cavity, a foaming cavity and a buffering cavity are arranged in the molding cavity, the foaming cavity has a water drop shape and is close to the molding port. The die head can improve the output and the quality of the floor substrate in order to ensure that the stone-plastic floor can meet the requirements of waterproofing and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of extrusion molding die head and plastic floor production, in particular to a production process of stone-plastic floor and a die head for producing floor base material. Background technique [0002] The traditional composite floor is relatively poor in waterproof and moisture-proof, easy to expand and deform, not conducive to cleaning, and the production process is complicated. Glue must be used in the production process, so that the formaldehyde content of the formed floor is high, which has certain pollution and is harmful to human health. Unfavorable, not environmentally friendly, and not recyclable. On the other hand, the plasticity is not strong, the processability is poor, the effect of sound absorption and foot feel is not good, and the fire and flame retardant performance is also insufficient, and it is increasingly unable to meet the needs of the market. It is believed that it will be gradually el...

AI Technical Summary

Problems solved by technology

[0002] The traditional composite floor is relatively poor in waterproof and moisture-proof, easy to expand and deform, not conducive to cleaning, and the production process is complicated. Glue must be used in the production process, so that the formaldehyde content of the formed floor is high, which has certain pollution and is harmful to human health. Unfavorable, not environmentally friendly, and not recyclable. On the other hand, the plasticity is not strong, the processability is poor, the effect of sound absorption and foot feel is not good, and the fire and flame retardant performance is also insufficient, and it is increasingly unable to meet the needs of the market. I believe it will gradually be eliminated by the market in the near future

In addition, in the production of floor substrates, dies are basically used for extrusion molding, and the existing dies can basically meet the normal production needs, but there are still certain defects, mainly concentrated in the following points : 1. The production efficiency is low, and the output is difficult to increase; 2. The cleaning cycle of the flow channel is short, which affects the production; 3. It is easy to leak glue; 4. The thickness of the formed substrate is not uniform enough

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