Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel wrapping and sulfurizing rubber hose

A process and hose technology, which is applied in the field of vulcanization in the production of rubber hoses, can solve the problems of not enough smooth and flat appearance, and achieve the effects of smooth and flat appearance, wide application range and lower production costs.

Inactive Publication Date: 2006-10-11
上海华瑞橡胶制品有限公司
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, this method has simple process, low equipment investment, and good overall compactness of the rubber hose, which can be applied to rubber hoses with general performance requirements. However, after the rubber hose is vulcanized, traces of cloth texture will inevitably be left on the surface, so the appearance is not smooth enough. smooth

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The process of the present invention is used for the production of steel wire braided hydraulic rubber hose with an inner diameter of 6-80 mm. The rubber hose is composed of an inner rubber layer, a steel wire reinforcement layer and an outer rubber layer. In the past, the lead-coating process was used for vulcanization, that is, a lead pressing machine was used outside the tube blank After the lead layer is coated, it is vulcanized in a vulcanization tank at 151°C for 60 minutes, and then the lead layer is peeled off to obtain the finished product. Using this process is prone to quality problems such as lead sticking, lead ash, "pearl rice", scratch marks, etc., and the surface of the obtained rubber hose is very greasy, requiring an additional cleaning process. Use a polyester film with a thickness of 30 μm and whose physical and mechanical properties meet the above requirements. After the 50% lap wrapping process, the vulcanization conditions will remain unchanged, an...

Embodiment 2

[0024] The process is used in the production of bridge drilling hose. In the construction process of the bridge, it is necessary to bury the bridge hole-making rubber hose in advance, then cast concrete, and finally pull out the hole-making rubber hose, so that it is used repeatedly until the rubber hose is damaged. Therefore, the flatness and smoothness of the hose surface are important indicators to measure the quality of the hose. This kind of rubber hose is composed of an inner rubber layer, a cloth reinforcement layer and an outer rubber layer, with an outer diameter of more than 70mm. In the past, it was vulcanized by wrapping with cloth. Large and prone to tear damage. Use a polyester film with a thickness of 40 μm and whose physical and mechanical properties meet the above requirements. After wrapping with 50% overlap, the original vulcanization process remains unchanged. , reducing the pull-out resistance of the rubber hose when the bridge is preformed, and prolongi...

Embodiment 3

[0026] The process is used in the production of diesel engine pipeline connection hoses. This kind of pipeline connection hose is very short, the length is generally not more than 1m, and the pipe diameter is 13-76mm. It is composed of an inner rubber layer, a cloth reinforcement layer and an outer rubber layer. The appearance of the rubber hose obtained by this process is smooth, but the cloth reinforcement layer between the rubber layers is prone to displacement and deformation, which affects the compressive strength of the rubber hose and leads to unstable quality of the finished product. In addition, the compression molding process needs to be equipped with molds and flat vulcanizing machines, and the investment in equipment is relatively large. Use a polyester film with a thickness of 50 μm and whose physical and mechanical properties meet the above requirements. After wrapping with 50% overlap, it can be vulcanized in a vulcanization tank. The surface of the obtained rub...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
melting pointaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

A rubber hose wrapping vulcanization process is characterized in that a polyester film is used instead of a traditional water-wrapping cloth as the outer layer pressurized material when the rubber hose is vulcanized. The polyester film is made of polyethylene terephthalate as a raw material, melted and extruded after drying to make a thick sheet, and then a film with a smooth surface and uniform thickness made by longitudinal and horizontal biaxial stretching and heat treatment. The film thickness is 30-50 μm and has physical and mechanical properties meeting certain requirements. The characteristics of this new process are that the process is simple, it can be applied to all specifications of rubber hoses, the equipment investment is small, the cost is low, and the finished rubber hoses have good overall compactness and smooth appearance.

Description

technical field [0001] The invention relates to a rubber hose manufacturing process in the rubber industry, in particular to a vulcanization process in the production of rubber hoses. Background technique [0002] As we all know, in addition to pure rubber hoses, multi-layer rubber hoses generally composed of inner rubber layer, reinforcement layer and outer rubber layer must use appropriate materials to exert a certain pressure on the outer rubber layer during vulcanization to ensure the tightness between the layers of the rubber hose. Fit to prevent defects such as air bubbles and delamination. Commonly used pressurization methods are: lead-wrapped vulcanization method (also known as molding method) and water-wrapped cloth vulcanization method (see C.W. Evans, translated by Zhao Guangxian, "Rubber Hose Technology", published by Chemical Industry Press, 1983). [0003] The lead-coated vulcanization method is to coat the outer layer of the rubber tube blank with a lead slee...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C63/06B29K105/24
Inventor 周国钧王明发范强
Owner 上海华瑞橡胶制品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com