Soft foaming sponge for seats and preparation method of soft foaming sponge

A soft foaming and sponge technology is applied in the field of soft foaming sponge for seats and its preparation, which can solve the problems of insufficient smooth surface of sponge products, unstable pressure and temperature, poor sealing performance of sponge molds, etc., and achieve stable production conditions. Control, temperature and pressure stabilization, reduce the effect of honeycomb phenomenon

Active Publication Date: 2019-06-28
东莞市佳雅汽车座椅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, because the two sides of the iron frame of the seat back protrude out of the mold, the sealing of the sponge mold is poor, and the pressure and temperature in the mold are unstable, so that the surface of the sponge product produced by the sponge mold is not sm

Method used

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  • Soft foaming sponge for seats and preparation method of soft foaming sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of preparation method of soft foam sponge for seat, it is characterized in that: comprise the steps:

[0047] Step (1): Mix the isocyanate component and the toluene diisocyanate component according to the proportion, stir evenly, and obtain the black material;

[0048] Mix polyether diol, triethylenediamine solution, bisdimethylaminoethyl ether solution, silicone oil, triethanolamine, flame retardant, and water according to the ratio, and stir evenly to obtain a white material;

[0049] Step (2): Preheat the mold so that the mold is stable and constant at 50-55°C. Place the iron frame of the seat back as a whole in the mold in advance, and place both ends of the iron frame completely inside the mold, and place the inside of the mold The edges of both ends of the iron frame are sealed, and then the black material and white material are injected into the mold according to the ratio;

[0050] Step (3): After the black material and white material are injected into t...

Embodiment 2

[0065] The preparation method of the soft foam sponge in this embodiment is the same as the preparation method of the above-mentioned embodiment one.

[0066] A kind of soft foam sponge for seat, its raw material comprises black material and white material, and the weight part of black material is 33 parts, and the weight part of white material is 67 parts;

[0067] The black material comprises an isocyanate component and a toluene diisocyanate component, and the isocyanate component and the toluene diisocyanate component are arranged according to a weight ratio of 3:1.5;

[0068] The isocyanate component is formed by mixing isocyanate and diphenylmethane diisocyanate, and the viscosity of the isocyanate component is 200mPa·s at 25°C;

[0069] The toluene diisocyanate component is compounded from 2,4-toluene diisocyanate and 2,6-toluene diisocyanate, and the ratio of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate is 4:1 by weight Scale setting;

[0070] White material...

Embodiment 3

[0079] The preparation method of the soft foam sponge in this embodiment is the same as the preparation method of the above-mentioned embodiment one.

[0080] A kind of soft foam sponge for seat, its raw material comprises black material and white material, and the weight part of black material is 30 parts, and the weight part of white material is 70 parts;

[0081] The black material comprises an isocyanate component and a toluene diisocyanate component, and the isocyanate component and the toluene diisocyanate component are set according to a weight ratio of 3:2;

[0082] The isocyanate component is formed by mixing isocyanate and diphenylmethane diisocyanate, and the viscosity of the isocyanate component is 200mPa·s at 25°C;

[0083] The toluene diisocyanate component is compounded from 2,4-toluene diisocyanate and 2,6-toluene diisocyanate, and the ratio of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate is 4:1 by weight Scale setting;

[0084] White material is mad...

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Abstract

The invention relates to a preparation method of soft foaming sponge. The preparation method comprises the following steps: (1) mixing an isocyanate component with a toluene diisocynate component in aproportion, uniformly stirring so as to obtain a black material, mixing polyether polyol, a triethylene diamine solution, a didimethylaminoethyl ether solution, silicone oil, triethanolamine, a flameretardant and water in a proportion, and uniformly stirring, so as to obtain a white material; (2) preheating a mold so as to maintain the temperature of the mold by at 50-55 DEG C, putting the wholea seat backrest iron frame into the mold in advance, completely two ends of the iron frame into the mold, sealing the edges of two ends of the iron frame in the mold, and injecting the black materialand the white material into the mold in a proportion; (3) after the black material and the white material are injected into the mold, covering the mold with a mold cover, filling the space between the mold and the mold cover with sealing rubber, locking a clamp, and sealing the mold; and (4) controlling the pressure in the mold at 1.5Pa, foaming for 3-5 minutes, and opening the mold, so as to obtain the soft foaming sponge.

Description

technical field [0001] The invention relates to the technical field of sponge production, in particular to a soft foam sponge for seats and a preparation method thereof. Background technique [0002] At present, the commonly used sponges are divided into three types according to the 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] But existing soft foam sponge for seat, in the process of processing, it is often necessary to put the iron frame of the seat back into the mould, and then pour the foaming material into the mould, so that the sponge is made of the iron frame of the seat back. The base frame is generated for subsequent seat production. However, in the actual production process,...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L83/04C08K3/00C08K3/38C08K3/22C08K3/02C08K3/32C08J9/08C08G18/48C08G18/76C08G18/32C08G18/66C08G101/00
Inventor 郑光亮
Owner 东莞市佳雅汽车座椅有限公司
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