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Manufacturing technology of foamed silicone rubber product

A foamed silicone rubber and production process technology, applied in the production field of special-shaped foamed silicone rubber hose or tape, can solve the problems of self-weight products collapse and deformation, low production efficiency, product length limitation, etc. Small heat loss and low greenhouse effect

Inactive Publication Date: 2015-03-11
东莞市华鸿橡塑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first process can only be produced intermittently due to the limitation of the size of the flat vulcanizing machine and the mold, the length of the product is limited, it cannot produce infinitely long products, and the production efficiency is low
The second process can realize continuous production, but when the product passes through the vulcanization tunnel, the product will produce drag marks, which will affect the appearance, and when the product size is large, the heavy weight will cause the product to collapse and deform, and the size fluctuation will be large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The manufacturing process of foamed silicon rubber product of the present invention, it comprises the following steps:

[0027] 1. Mix the silicone rubber, foaming agent, and vulcanizing agent evenly, and extrude them through a screw extruder to obtain unvulcanized silicone rubber;

[0028] 2. Wrap approximately unvulcanized silicone rubber on the guide rope;

[0029] 3. Sizing and vulcanization treatment in the front drying tunnel, the temperature of the setting and vulcanization treatment is 230 degrees, and the time is 10 seconds;

[0030] 4. Pass the guide rope wrapped with unvulcanized silicone rubber through the heat-conducting oil furnace at a uniform speed through the adjustable speed winding device. The vulcanized silicone rubber undergoes foaming and vulcanization reactions, and is cured into elastic foamed silicone rubber products. The heat transfer oil is divided into six continuous oil bath foaming vulcanization zones, and the length of each oil bath foami...

Embodiment 2

[0036] The manufacturing process of foamed silicon rubber product of the present invention, it comprises the following steps:

[0037] 1. Mix the silicone rubber, foaming agent, and vulcanizing agent evenly, and extrude them through a screw extruder to obtain unvulcanized silicone rubber;

[0038] 2. Wrap about 500mm long unvulcanized silicone rubber on the guide rope;

[0039] 3. Sizing and vulcanization treatment in the front drying tunnel, the temperature of the setting and vulcanization treatment is 280 degrees, and the time is 30 seconds;

[0040] 4. Pass the guide rope wrapped with unvulcanized silicone rubber through the heat-conducting oil furnace at a uniform speed through the adjustable speed winding device. The vulcanized silicone rubber undergoes foaming and vulcanization reactions, and is cured into elastic foamed silicone rubber products. The heat transfer oil is divided into six continuous oil bath foaming vulcanization zones, and the length of each oil bath fo...

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Abstract

The invention relates to the technical field of silicone rubber production and especially relates to a manufacturing technology of a foamed silicone rubber product. The manufacturing technology comprises the following steps of A, uniformly mixing a silicone rubber, a foaming agent and a vulcanizing agent, and molding the mixture by a screw extruder to obtain an unvulcanized silicone rubber, B, winding a guide rope with the unvulcanized silicone rubber, C, passing the guide rope with the unvulcanized silicone rubber through conduction oil so that the unvulcanized silicone rubber undergoes foaming and vulcanization reactions and is cured into a foamed silicone rubber product, and D, carrying out secondary vulcanization treatment on the foamed silicone rubber product to obtain a foamed silicone rubber finished product foamed fully and having excellent elasticity. The manufacturing technology has the advantages that 1, a continuous extrusion technology is adopted so that production efficiency is high and a product having infinite length is produced; 2, in foaming and vulcanization, a silicone rubber is immersed in conduction oil and does not contact with a towing belt so that towing belt imprints are avoided; and 3, a silicone rubber is immersed and suspends in conduction oil so that self-weight collapse and deformation are avoided.

Description

Technical field: [0001] The invention relates to the technical field of silicone rubber production methods, in particular to the production process of foamed silicone rubber products, especially the production of special-shaped foamed silicone rubber hoses or tapes with complex shapes and a length of more than 10 meters. Background technique: [0002] At present, there are two types of production of foamed silicone rubber products. The first is foaming and vulcanization under pressure in the mold of a flat vulcanizer, and the second is foaming and vulcanization with hot air without pressure after extrusion molding by an extruder. The first process can only be produced intermittently due to the limitation of the size of the flat vulcanizing machine and the mold, the length of the product is limited, it cannot produce infinitely long products, and the production efficiency is low. The second process can realize continuous production, but when the product passes through the vul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/00B29C47/00B29C35/06B29C44/20
Inventor 罗华兴
Owner 东莞市华鸿橡塑材料有限公司