Process method of reducing release amount of formaldehyde in produced laminated flooring

Abstract

The invention relates to a process method of reducing release amount of formaldehyde in produced laminated flooring, which is characterized in that a high temperature four-step pressing method processing process is used to reduce the release amount of formaldehyde. The process method comprises the following specific steps: placing a density board substrate in a hot pressing machine for heating atthe high temperature of 180-190 DEG C for 15-20 seconds before pressing; pressing an anti-abrasion layer and a decoration layer, and placing the pressed anti-abrasion layer and decoration layer on a slab die to cure for 12 hours; putting the density board in the hot pressing machine for high temperature heating at 180-190 DEG C for 15-20 seconds, and taking out the heated density board to place on the slab die to cure at the temperature of 50-60 DEG C; and pressing a balanced layer on the back surface of the density board, and putting the pressed density board on the slab die to cure for 5-7 days. The invention has the advantages that the content of the formaldehyde in the substrate is greatly reduced by using the high temperature four-step pressing method processing process and a physical method of high temperature treatment; and the release amount of the formaldehyde in the substrate is significantly reduced through the processing link of the floor, thereby truly blocking the pollution source of damage of the formaldehyde on a human body when the floor is used due to decoration.

Description

technical field [0001] The invention belongs to the production process of laminate flooring, in particular to a process method for producing laminate flooring and reducing formaldehyde emission. [0002] Background technique [0003] Formaldehyde is a kind of chemical gas. When the content in the air reaches a certain concentration, it will cause harm to the human body. It is mainly used in the manufacturing process of composite materials (such as the density board substrate of laminate flooring) to play a bonding role. In this way, the formaldehyde contained in the building materials will not volatilize immediately, but will volatilize slowly due to different temperature and humidity conditions, and the volatilization time can be as long as ten years or more. Living in an environment where the concentration of formaldehyde exceeds the standard for a long time, formaldehyde will cause obvious damage to human eyes, nose, and respiratory system or cause people to suffer from ...

AI Technical Summary

Problems solved by technology

This kind of production process cannot release the formaldehyde content in the original density board substrate, but completely seals the formaldehyde in the substrate, so it is difficult for many laminate flooring on the market to meet the requirements of the national standard