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Radial tire bladder production process

A production process, radial tire technology, applied in the field of high-strength tire curing bladder and its production process, can solve the problems of low qualified rate of rubber strips, unfavorable production process processing, poor use effect, etc., to achieve optimized exhaust structure and process, The effect of improving the qualified rate of no bubbles and improving the production process

Inactive Publication Date: 2020-04-17
浙江华和塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the production process of existing tire vulcanizing bladders, there are usually a lot of air bubbles in the rubber strip during the extrusion process, and the rubber strip will expand after extrusion, resulting in low extrusion molding efficiency of the rubber strip and easy extrusion cavity. There are problems such as clogging and material breaking, and the qualified rate of extruded rubber strips is relatively low, which is not conducive to the subsequent production process. In addition, the application of release agent in the existing tire bladder is usually carried out when the tire bladder is used as a tire molding mold. Pre-applied to facilitate the demoulding of tire molding and improve the smoothness of tires, but its use effect is relatively poor, the isolation layer formed by the release agent is prone to fall off, and the isolation effect is relatively general

Method used

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Embodiment 1

[0024] In conjunction with the drawings, this embodiment discloses a radial tire capsule production process, comprising the following steps:

[0025] S1. One-stage rubber: by weight, take 95-105 parts of butyl rubber and 3-6 parts of neoprene rubber into an internal mixer at 45°C-50°C, and add 30-40 parts of high-strength rubber after 2-3 minutes Carbon black, 1-1.2 parts of stearic acid and 4-5 parts of castor oil, the temperature rises to 165°C-170°C, and after banburying for 10-15 minutes, the rubber is discharged to obtain a section of glue; the high-structure carbon black is N220, and the particle size is 25 -40nm, the vulcanization resin is zinc bromide-based phenol formaldehyde resin; first add high-structure carbon black and then add castor oil;

[0026] S2, two-stage glue: by weight, add the one-stage glue obtained in step S1, 4-5 parts of zinc oxide, 1-3 parts of ferric chloride, 2-4 parts of polychloroprene, vulcanized resin 4-8 Parts, mixed in an internal mixer at...

Embodiment 2

[0036] A radial tire capsule production process, comprising the following steps:

[0037] S1. One-stage rubber: by weight, take 100 parts of butyl rubber and 5 parts of neoprene rubber and pour them into an internal mixer at 50°C. After 3 minutes, add 35 parts of high-structure carbon black, 1 part of stearic acid and 4 parts Castor oil, first add high-structure carbon black and then add castor oil; the temperature rises to 165°C, and after banburying for 15 minutes, the rubber is discharged to obtain a section of rubber; the high-structure carbon black is N220, the particle size is 30nm, and the vulcanization resin is zinc bromide-based phenol Formaldehyde resin;

[0038] S2, two-stage glue: in parts by weight, add the one-stage glue obtained in step S1, 5 parts of zinc oxide, 2 parts of ferric chloride, 3 parts of polychloroprene, and 6 parts of vulcanized resin. After 20 minutes of banburying in the internal mixer, the rubber is discharged to obtain the second-stage rubber; ...

Embodiment 3

[0047] Based on Example 2, in step S2, the addition of polychloroprene was removed.

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Abstract

The invention discloses a radial tire bladder production process which comprises the following steps: S1, primary rubber preparation: taking butyl rubber and chloroprene rubber in parts by weight, pouring the butyl rubber and chloroprene rubber into an internal mixer, adding high-structure carbon black, stearic acid and castor oil, and carrying out heating and internally mixing to obtain primary rubber; S2, second-stage rubber preparation: adding the first-stage rubber obtained in the step S1, zinc oxide, ferric chloride, polychloroprene and vulcanized resin in parts by weight, and performinginternal mixing in the internal mixer to obtain second-stage rubber; S3, extrusion slicing; S4, vulcanization treatment; and S5, storage: storing a vulcanized bladder under an indoor dark condition, and keeping the storage environment clean and dry. By improving the extrusion molding procedure, the percent of pass and quality of a rubber tape are improved, and subsequent processing is facilitated;and pre-pre-separant coating is adopted, the post-vulcanization process is combined, high-temperature aging is utilized, the isolation effect is improved, and the subsequent service life of the product is prolonged.

Description

technical field [0001] The invention relates to the technical field of tire manufacturing, in particular to a high-strength tire curing bladder and a production process thereof. Background technique [0002] A tire bladder is an essential consumable part used in the manufacture of tires. During the vulcanization process of the tire, the inside of the tire bladder is filled with compressed gas or superheated water to stretch and stretch the tire blank to form an internal pressure vulcanized tire. The compressed gas is usually nitrogen, and the superheated water is hot water that has been deaerated. This process setting avoids the oxidation of the tire bladder as much as possible, thereby increasing the service life of the tire bladder. [0003] Tire vulcanization can significantly improve the performance of tires, especially the mechanical properties. The tire curing bladder is a tool for tire vulcanization and an important mold in the tire preparation process. The tire cu...

Claims

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Application Information

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IPC IPC(8): B29C48/345B29C33/10B29C35/04C08L23/22C08L11/00C08L91/00C08K13/02C08K3/04C08K5/09C08K3/22C08K3/16B29L30/00
CPCB29D30/0606B29D30/0649B29D30/0654B29D2030/0617B29D2030/067B29D2030/0677B29C48/345C08K2003/2296C08K2201/011C08L23/22C08L2205/035C08L11/00C08L91/00C08K13/02C08K3/04C08K5/09C08K3/22C08K3/16
Inventor 谢东
Owner 浙江华和塑胶科技有限公司