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Preparation method of natural latex pillow product

A technology of natural latex and pillow cushion, which is applied in the field of low-temperature process preparation of natural latex pillow cushion products, can solve the problems of high viscosity, easy blockage of foaming machines and equipment transmission pipes, etc., to avoid particle agglomeration, reduce cleaning and maintenance and The effect of maintenance workload and shortened production cycle

Inactive Publication Date: 2019-08-09
SHANGHAI TAICHANG HEALTH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-temperature process preparation method for natural latex pillow products, so as to overcome the problems of high viscosity during pre-vulcanization, ripening and foaming in the prior art, and easy blockage of foaming machines and equipment transmission pipelines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Take 100 parts of centrifugally concentrated natural rubber latex, adjust the ammonia content to 0.22% at a temperature of 16°C and ventilation conditions, and obtain Latex A;

[0033] (2) Add latex A to the aging tank, and add foaming agent (a mixture of potassium vegetable oleate and potassium ricinoleate at a mass ratio of 5:1) while stirring at 50rpm, 4 parts of vulcanizing agent (sulfur) 2 parts, 1 part of anti-aging agent (anti-aging agent WL), 1.8 parts of vulcanization accelerator (zinc 2-mercaptobenzothiazole), and aging at 20°C for 8 hours after the addition of materials, to obtain latex B;

[0034] (3) Add latex B to the foaming machine for foaming, and control the temperature of the material at 20°C during foaming, and then add a gelling agent (the mass ratio of sodium fluorosilicate to potassium chloride is 3: 1 mixture) 1 part, active agent (zinc oxide) 3 parts and vulcanization accelerator (di-o-toluene guanidine) 0.9 parts (the active agent and vulca...

Embodiment 2

[0039] (1) Take 100 parts of centrifugally concentrated natural rubber latex, adjust the ammonia content to 0.20% at a temperature of 20°C and ventilation conditions, and obtain Latex A;

[0040] (2) Add latex A to the aging tank, and add foaming agent (a mixture of potassium vegetable oleate and potassium ricinoleate at a mass ratio of 3:1) while stirring at 35 rpm, 3 parts of vulcanizing agent (sulfur) 1.5 parts, 0.8 parts of anti-aging agent (anti-aging agent WL), 1.0 parts of vulcanization accelerator (zinc 2-mercaptobenzothiazole) and 0.9 parts of vulcanization accelerator (zinc diethyldithiocarbamate), after the addition is completed Latex B was obtained by aging at 18°C ​​for 12 hours;

[0041](3) Add latex B to the foaming machine for foaming, and control the temperature of the material at 20°C during foaming, and then add a gelling agent (the mass ratio of sodium fluorosilicate to potassium chloride is 2: 1 mixture) 2.7 parts, active agent (triethanolamine) 4 parts a...

Embodiment 3

[0046] (1) Take 100 parts of centrifugally concentrated natural rubber latex, adjust the ammonia content to 0.17% at a temperature of 18°C ​​and ventilation conditions, and obtain Latex A;

[0047] (2) Add latex A to the aging tank, and add foaming agent (a mixture of potassium vegetable oleate and potassium ricinoleate at a mass ratio of 7:1) while stirring at 40rpm, 1.5 parts of vulcanizing agent 4,4 '-dithiodimorpholine) 2.1 parts, anti-aging agent (anti-aging agent WL) 1.2 parts, vulcanization accelerator (2-thiol benzothiazole) 0.8 parts and vulcanization accelerator (2-thiol benzothiazole Zinc) 1.0 parts, aging at 27°C for 5 hours after the addition of materials, to obtain latex B;

[0048] (3) Add latex B to the foaming machine for foaming, and control the temperature of the material at 20°C during foaming, and then add a gelling agent (the mass ratio of sodium fluorosilicate to potassium chloride is 5: 1) 1.9 parts, active agent (zinc stearate) 3.5 parts and vulcaniza...

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Abstract

The invention provides a preparation method of a natural latex pillow product. The preparation method comprises following steps: 1, 100 parts of natural latex is subjected to ammonia content adjustingto 0.17 to 0.25% under ventilation conditions at 16 to 27 DEG C so as to obtain latex A; 2, latex A is introduced into a maturation tank, with stirring, a foaming agent, a vulcanizing agent, an anti-aging agent, and a vulcanization accelerator are added, and maturation is carried out for 0.1 to 12h at 16 to 27 DEG C so as to obtain latex B; 3, latex B is introduced into a foaming machine for foaming, the material temperature is controlled to be 16 to 27 DEG C in foaming, after foaming, a gallant, an activator, and a vulcanization accelerator are added for uniform stirring so as to obtain latex C; and 4, latex C is introduced into a mould, and is subjected to gelling fixing, sulfuration, demoulding, water washing, and drying so as to obtain finished products. According to the preparation method, maturation is carried out at 16 to 27 DEG C, so that consumption of a large amount of energy is avoided, latex particle agglomeration in high temperature maturation process is avoided, qualityis improved, direct foaming can be carried out without pre-sulfuration process, and production period is shortened greatly.

Description

technical field [0001] The invention relates to a low-temperature process preparation method of a natural latex pillow product. Background technique [0002] Latex pillows and latex mattresses are made of natural latex foamed by a high-tech method to make a porous and open low-density material. At present, there are two main production processes for latex pillow products in the world, one is the Talalay method and the other is the Dunlop method. The production process of the Talalay method consists of mixing, injection molding, vacuuming (that is, flushing CO 2 ), freezing, vulcanization, drying, etc., using the principle of physical foaming (that is, vacuum); the basic process of the Dunlop method consists of mixing, foaming, injection molding, vulcanization, rinsing, drying, etc., using the principle of chemical foaming . The Dunlop method is used most, and it has the advantages of low cost and fast development. [0003] The standard production process of the Dunlop me...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08K3/06C08K5/47C08K3/22C08K13/02C08J9/04
CPCC08J9/04C08J2307/02C08K3/06C08K5/47C08K2003/2296C08K13/02
Inventor 王昌华
Owner SHANGHAI TAICHANG HEALTH TECH
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