A kind of polyurethane foam sponge sofa, sponge stool

Abstract

The invention provides a polyurethane foamed sponge sofa or sponge stool which comprises a liner and an outer pack wrapped outside the liner. The liner is prepared by foaming the following components in parts by weight: 100 parts of at least one polyether glycol, 15-85 parts of toluene diisocyanate, 0.1-0.3 part of tin catalyst, 0.1-0.3 part of amine catalyst, 0.8-6 parts of water and 0.5-2 parts of silicon oil surfactant. The outer pack is prepared by foaming the following components in parts by weight: 100 parts of at least one polyether glycol, 25-80 parts of diphenylmethane diisocyanate, 0.1-0.5 part of tin catalyst, 0.1-0.6 part of amine catalyst, 0.2-3.5 parts of water and 0.3-3 parts of silicon oil surfactant. The polyurethane foamed sponge sofa or sponge stool has the characteristics of simple manufacturing technique, controllable appearance, high production efficiency, low cost, long service life and light weight, and is very convenient to use.

Description

technical field [0001] The invention relates to a polyurethane foamed sponge sofa and a sponge stool. Background technique [0002] At present, commonly used sponges are divided into three types according to their structure: high-density sponges, medium-density sponges, and low-density sponges. Among them, the high-density sponge has many holes, is full, and has good air permeability and elasticity; sponge products have gradually become popular in people's lives, including seats, sofas, mattresses and other household items made of sponge. [0003] And the making of sponge stool, sponge sofa mainly is to coat sponge layer outside a base body at present, outside the sponge layer, coat surface material to form again. Due to the elasticity of the sponge, multiple fastening points (such as fastening nails, etc.) must be used to make the desired shape when it is coated on the substrate, and it needs to be prepared by manual operation. It is difficult and the production efficienc...

AI Technical Summary

Problems solved by technology

Due to the elasticity of the sponge, multiple fastening points (such as fastening nails, etc.) must be used to make the desired shape when it is coated on the substrate, and it needs to be prepared by manual operation. It is difficult and the production efficiency is low; according to the current preparation method of secondary coating, it is difficult to guarantee the uniformity of the product shape; in addition, if the fastening nails fall off, the sponge layer will be separated from the substrate, causing the product shape to change. Variety

In addition, based on the above problems, a one-piece sponge sofa or sponge stool has been developed. The sponge sofa or sponge stool of this design is heavy and inconvenient to use in daily life. At the same time, it also has problems such as high cost and poor elastic memory.