CN1035988C - Inflation-free inner tyre and its production technology - Google Patents
Inflation-free inner tyre and its production technology Download PDFInfo
- Publication number
- CN1035988C CN1035988C CN 92113124 CN92113124A CN1035988C CN 1035988 C CN1035988 C CN 1035988C CN 92113124 CN92113124 CN 92113124 CN 92113124 A CN92113124 A CN 92113124A CN 1035988 C CN1035988 C CN 1035988C
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- inner tube
- base
- foaming
- content
- rubber
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- Expired - Fee Related
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- Tires In General (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The present invention discloses an inflation-free inner tube and the making technology thereof, which relates to an inner tube, particularly to an inner tube of bicycles and a making method thereof. The inner tube is a solid ring body which is formed in a manner that rubber and plastic are used as basic materails, or only plastic is used as basic materials, a foaming agent, a crosslinking agent, a vulcanization accelerator and a stabilizer are added, and an elastic micropore foaming body is formed and is used as materials; then plasticization, mixing, sheet pulling, pelleting, extruding into blanks and hot pressing foaming forming are carried out. The inner tube has low cost, and when tightly matched with a tyre cover, the inner tube has sufficient elasticity and high intensity; when in use, the inner tube does not need to be inflated. The inner tube has puncturing resistance and brings great convenience to users. The inner tube of the present invention can be widely used for various vehicles.
Description
The present invention relates to inner tube of vehicles and manufacture method.This inner tube of a tyre is specially adapted to the inner tube of a tyre of bicycle.
Traditional bicycle tube is the hollow circular ring body made from rubber, could use after the inflation, this structures shape its easy gas leakage, puncture flat tire, need often inflate, repair, make troubles to the user, the home and abroad is all studied exempting from the inflatable bicycle inner tube of a tyre in succession for this reason, the inflatable bicycle inner tube of a tyre of now having developed of exempting from mainly contains: 1. be that raw material is made the car inner tube of a tyre that the filled circles ring body forms with the polyurethane, though avoid inflation, its cost height.2. the rubber that extracts cross-sectional plane and be circle or bar shaped is inserted in the cover tire as the inner tube of a tyre, this structure, and the cooperation between its inside and outside tire is not tight, has influenced use.
In view of above-mentioned, it is low that purpose of the present invention aims to provide a kind of cost, cooperate with cover tire closely, and good springiness, intensity is high exempts from the inflatable bicycle inner tube of a tyre and manufacture method thereof.
The inflatable bicycle inner tube of a tyre of exempting from provided by the invention is the filled circles ring body made from the elasticity micro cellular foam, this elasticity micro cellular foam is to be base-material with rubber, plastics, perhaps only be that base-material adds foaming agent, crosslinking agent, vulcanization accelerator, stabilizer and forms with plastics, its base-material parts by weight are 100, wherein rubber content is 0～50 part, plastic content is 10～100 parts, foaming agents content is 2～5% of a base-material, content of crosslinking agent is 0.5～3% of a base-material, vulcanization accelerator content is 0.5～2% of base-material, and stabiliser content is 1～3% of a base-material.Above-mentioned rubber can be used natural rubber, butadiene rubber, and buna-S or EP rubbers, the preferable amount of rubber is 20～30 parts; Plastics available polyethylene or ethene---vinyl acetate copolymer, also can be that polyethylene and ethene---vinyl acetate copolymer mixes use, poly consumption is generally 10～80 parts, preferable amount is 20～30 parts, the consumption of ethene---vinyl acetate copolymer is generally 20～90 parts, and preferable amount is 50～70 parts; Foaming agent is used Celogen Az (being called for short AC) usually, its consumption is decided by the density of goods (elasticity micro cellular foam), crosslinking agent adopts dicumyl peroxide (being called for short DCP) usually, vulcanization accelerator can be used zinc oxide, any of the general available hard ester acid of stabilizer, zinc stearate, lead stearate, lead sulfate tribasic perhaps also can mix them and use.
The method of being made bicycle tube by the elasticity micro cellular foam is: base-material is added in the plasticator plasticates earlier, plasticating temperature is advisable with 100～130 ℃, after reaching evenly when plasticating, add stabilizer, vulcanization accelerator continues mixing to evenly, and it is mixing again to evenly to add foaming agent then, and it is mixing after evenly to add crosslinking agent at last, carry out pulling-on piece, pelletizing is extruded into base by extruder again, then blank is put into the moulding of mould hot-pressing and foaming, hot-pressing and foaming moulding control temperature is 150 ℃～180 ℃, be preferably 155 ℃～170 ℃, pressure is 0～3.0MPa (gauge pressure), is preferably 1.0～1.5MPa (gauge pressure), 10～50 minutes time, best 20～35 minutes, treat that hot-pressing and foaming is molded into specified time after, promptly stop the heating, when mold cools down to 70 ℃ with bottom knockout, get product.
The cross-sectional plane that preferably makes the car inner tube of a tyre of the present invention is consistent with the shape of cross section after inflation third tire is put into the cover tire inflation, so that can closely cooperate between inside and outside tire, obtains better elasticity.
Subordinate list one shows the several specific embodiments that constitute each component content of the present invention, and its method for making is as above-mentioned.Technological condition sees Table one.
Subordinate list two is for pressing the physical property measurement result of the elasticity micro cellular foam that table one embodiment forms.
Test shows, because the inner tube of a tyre of the present invention cooperates with cover tire closely, its elasticity is good especially, and intensity is also high, and in addition, used elasticity micro cellular foam material is more inexpensive than polyurethane, so inner tube of a tyre cost is greatly reduced, its cost is less than half of the inner tube of a tyre of polyurethane system.The present invention can be widely used in each inner tube of vehicles, particularly bicycle tube, will bring great convenience to the user.
Table one
| Raw material | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Polyethylene (part) | 60 | 20 | 20 | 20 | - |
| Ethene-vinyl acetate interpolymer (part) | - | 50 | 60 | 80 | 80 |
| Natural rubber (part) | 40 | 30 | - | - | 20 |
| Butadiene rubber (part) | - | - | 20 | - | - |
| Blowing agent AC (%) | 3.0 | 3.0 | 3.0 | 2.5 | 3.3 |
| Crosslink agent DCP (%) | 1.0 | 1.2 | 1.1 | 1.0 | 1.2 |
| Zinc oxide (%) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Stearic acid (%) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Lead sulfate tribasic (%) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Plasticating temperature (℃) | 115 | 115 | 115 | 115 | 115 |
| The hot-pressing and foaming temperature (℃) | 170 | 170 | 170 | 170 | 170 |
| Pressure MPa (gauge pressure) | 1 | 1 | 1 | 1 | 1 |
| Time (minute) | 30 | 30 | 30 | 30 | 30 |
Table two
| The mensuration project | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Tensile strength at break MPa | 0.82 | 1.08 | 1.2 | 1.3 | 1.0 |
| Elongation at failure % | 180 | 280 | 120 | 200 | 280 |
| Hardness hs ° | 25 | 26 | 38 | 34 | 25 |
| Density g/cm 3 | 0.380 | 0.263 | 0.276 | 0.211 | 0.298 |
| Compressive permanent set % | 20.2 | 20.1 | 13.9 | 21.4 | 20.1 |
| Subdue 150,000 times | Do not split | Do not split | Do not split | Do not split | Do not split |
Claims (6)
1. solid circle inflation-free inner tyre that is used for bicycle, it is characterized in that it is to make with the elasticity micro cellular foam, this elasticity micro cellular foam is with rubber, plastics are base-material, perhaps only be that base-material adds foaming agent with plastics, crosslinking agent, vulcanization accelerator, stabilizer forms, its base-material parts by weight are 100, wherein rubber content is 0～50 part, plastic content is 10～100 parts, foaming agents content is 2～5% of its material, content of crosslinking agent is 0.5～3% of a base-material, vulcanization accelerator content is 0.5～2% of base-material, stabiliser content is 1～3% of a base-material, and above-mentioned rubber is natural rubber or butadiene rubber or buna-S or EP rubbers, and plastics adopt polyethylene or ethene-vinyl acetate interpolymer or polyethylene mixes use with the ethene-vinyl acetate interpolymer.
2. by the described inflation-free inner tyre of claim 1, the content that it is characterized in that rubber is 20～30 parts.
3. by the described inflation-free inner tyre of claim 1, the cross-sectional plane that it is characterized in that it is consistent with the shape of cross section that inflatable inner tube is put into after cover tire is inflated.
4. method of making the described inflation-free inner tyre of claim 1, it is characterized in that earlier base-material being put in the plasticator under 100 ℃～130 ℃ temperature, plasticating, after reaching evenly, add stabilizer, vulcanization accelerator continues mixing to even, it is mixing to even to add foaming agent then, it is mixing again after evenly to add crosslinking agent at last, carry out pulling-on piece, pelletizing, be extruded into base, put into the moulding of mould hot-pressing and foaming, the demoulding, its hot-pressing and foaming temperature is 150 ℃～180 ℃, and pressure is 0～3.0MPa (gauge pressure).
5. by the described inflation-free inner tyre of claim 7, it is characterized in that the hot-pressing and foaming temperature is 155 ℃～170 ℃.
6. by the described inflation-free inner tyre of claim 7, the pressure that it is characterized in that hot-pressing and foaming is 1～1.5MPa (gauge pressure).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113124 CN1035988C (en) | 1992-11-11 | 1992-11-11 | Inflation-free inner tyre and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113124 CN1035988C (en) | 1992-11-11 | 1992-11-11 | Inflation-free inner tyre and its production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1075119A CN1075119A (en) | 1993-08-11 |
| CN1035988C true CN1035988C (en) | 1997-10-01 |
Family
ID=4946248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113124 Expired - Fee Related CN1035988C (en) | 1992-11-11 | 1992-11-11 | Inflation-free inner tyre and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035988C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061610C (en) * | 1995-06-07 | 2001-02-07 | 黄坤炳 | Non-inflatable safety tyre and making method thereof |
| CN103625217B (en) * | 2013-11-05 | 2016-02-24 | 王一圣 | Prevent puncturing the rubber pange inner tube of a tyre |
| CN104097458A (en) * | 2014-07-26 | 2014-10-15 | 劳鑫宇 | Puncture-proof tire tube for bicycles and electric vehicles |
| CN104760180A (en) * | 2015-03-10 | 2015-07-08 | 李少坤 | Preparation method of foamed air-inflation-free inner tube and foamed air-inflation-free tire |
| CN106147037A (en) * | 2015-03-25 | 2016-11-23 | 吕钟舟 | A kind of preparation method of EVA nano combined foaming rubber plastic Combined inner tube |
| CN105623181A (en) * | 2016-01-21 | 2016-06-01 | 湖北洋田塑料制品有限公司 | Inflation-free inner tire for tricycle for children and preparation method thereof |
| CN108621395A (en) * | 2017-03-15 | 2018-10-09 | 李菊兰 | A kind of the foaming concentrate manufacturing process and tire manufacture craft of solid tire |
| CN109535517A (en) * | 2018-12-05 | 2019-03-29 | 熊祚红 | Motorcycle tyre tube and preparation method thereof |
-
1992
- 1992-11-11 CN CN 92113124 patent/CN1035988C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1075119A (en) | 1993-08-11 |
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| CF01 | Termination of patent right due to non-payment of annual fee |