CN212653749U - Thermoplastic elastomer foaming device - Google Patents
Thermoplastic elastomer foaming device Download PDFInfo
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- CN212653749U CN212653749U CN201922490965.4U CN201922490965U CN212653749U CN 212653749 U CN212653749 U CN 212653749U CN 201922490965 U CN201922490965 U CN 201922490965U CN 212653749 U CN212653749 U CN 212653749U
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- thermoplastic elastomer
- heating
- elastomer particles
- gas
- pressurizing
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Abstract
The utility model provides a thermoplastic elastomer foaming device, including being used for heating the thermoplastic elastomer granule to the heating mechanism of softening and being used for making the thermoplastic elastomer granule after softening be in the loading system that is higher than the atmospheric pressure environment, loading system is connected with and is used for letting in at least one kind of inert gas in order to order about the gas generator in the thermoplastic elastomer granule after the gas entering softens in the loading system. The utility model discloses foaming efficiency is high, and when loading mechanism permeated the thermoplastic elastomer granule after softening with inert gas, heating mechanism can heat in step and make it soften new a batch thermoplastic elastomer granule, and assembly line operation improves foaming efficiency.
Description
Technical Field
The utility model relates to a foaming technical field, concretely relates to thermoplastic elastomer foaming device.
Background
In the field of shoe materials, more damping materials such as TPU or PEBAX materials are used, in order to obtain a better foaming effect, the materials are generally required to be subjected to cross-linking treatment before foaming, the cross-linking mode is generally realized by adding a cross-linking agent or by irradiation cross-linking, but the defects caused by the cross-linking treatment are obvious, namely the cross-linked materials cannot be recycled, and the obtained product has poor environmental protection performance and does not meet the large direction of sustainable development in China at present.
The conventional ETPU shock-absorbing midsole is formed in two ways, one way is to adopt TPU material to perform injection molding to form a sole blank, then adopt a supercritical foaming way to fully foam the TPU material in a heating and pressurizing environment to obtain a foaming forming body, and the other way is to adopt a supercritical foaming way to foam TPU material particles in a heating and pressurizing environment to obtain ETPU particles, and then carry out secondary foaming to obtain the foaming forming body. However, in actual production, gas can enter the TPU material only after the TPU material is heated to be softened, so that heating and pressurizing the TPU material at the same time takes a long time, and the method is not suitable for actual production.
SUMMERY OF THE UTILITY MODEL
The utility model aims at above weak point, provide a heating and pressurization split go on, can improve the thermoplastic elastomer foaming device of foaming efficiency greatly.
The utility model provides a scheme that technical problem adopted is: a thermoplastic elastomer foaming device comprises a frame, a heating mechanism for heating thermoplastic elastomer particles to be softened and a pressurizing mechanism for enabling the softened thermoplastic elastomer particles to be in a higher-than-atmospheric-pressure environment, wherein the pressurizing mechanism is connected with a gas generator for introducing at least one inert gas into the pressurizing mechanism so as to drive the gas into the softened thermoplastic elastomer particles.
Furthermore, in order to realize automatic feeding and discharging, the operation efficiency is improved; the front end of the heating mechanism is provided with a first lifting machine used for conveying thermoplastic elastomer particles into the heating mechanism, and a second lifting machine used for conveying softened thermoplastic elastomer particles into the pressurizing mechanism is arranged between the heating mechanism and the pressurizing mechanism.
Further, in order to heat and pressurize the thermoplastic elastomer particles synchronously, the efficiency is improved, and the high-pressure sealing and heating performance of the equipment is ensured; the heating mechanism and the pressurizing mechanism are both reaction kettles.
Furthermore, in order to press gas into the thermoplastic elastomer particles and avoid the reaction between the gas and the material, no trace is left after foaming; the inert gas is nitrogen, carbon dioxide or the mixture of the nitrogen and the carbon dioxide.
Furthermore, in order to ensure that the material is environment-friendly and nontoxic, and has the characteristics of high elasticity, aging resistance and the like; the thermoplastic elastomer granular material is one of TPE, TPU, TPEE or PEBAX or a mixture of two or more than two materials.
Compare prior art, the utility model has the advantages of it is following: the utility model has high foaming efficiency, when the pressurizing mechanism permeates inert gas into the softened thermoplastic elastomer particles, the heating mechanism can synchronously heat a new batch of thermoplastic elastomer particles to soften the thermoplastic elastomer particles, and the foaming efficiency is improved by assembly line operation; based on the fact that the thermoplastic elastomer particles are foamed usually by heating and pressurizing, the thermoplastic elastomer particles are softened by heating, and inert gas enters the thermoplastic elastomer particles by pressurizing, the traditional foaming process is synchronously heated and pressurized, but in the initial stage, when the thermoplastic elastomer particles are not softened, the gas entering efficiency is low, the invention adopts the steps of heating and softening the thermoplastic elastomer particles, and then replacing a container for pressurizing and injecting gas, so that the efficiency is higher, in addition, the heating process is carried out in a reaction kettle, the volume expansion of the thermoplastic elastomer particles can not be caused by only heating the thermoplastic elastomer particles, compared with the traditional heating and pressurizing process in the reaction kettle, a part of the inert gas in the thermoplastic elastomer particles is flushed out of the material, so that the material generates certain expansion, but because the current temperature of the material is below the softening point, therefore, most of gas is still reserved in the material (the reserved gas can expand the material in the secondary foaming process to play a role), so that more materials can be placed in the reaction kettle with the same volume, the utilization efficiency of the whole reaction kettle is improved, and the cost of a single material in the whole production process is reduced.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a heating mechanism; 2-a pressurizing mechanism; 3-a gas generator; 4-a first hoist; and 5, a second hoisting machine.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples:
as shown in fig. 1, the present embodiment provides a thermoplastic elastomer foaming device, which comprises a frame, a heating mechanism 1 for heating thermoplastic elastomer particles to be softened, and a pressurizing mechanism 2 for making the softened thermoplastic elastomer particles in an environment higher than atmospheric pressure, wherein the pressurizing mechanism 2 is connected with a gas generator 3 for introducing at least one inert gas into the pressurizing mechanism 2 to drive the gas into the softened thermoplastic elastomer particles.
In the embodiment, in order to realize automatic feeding and discharging, the operation efficiency is improved; the front end of the heating mechanism 1 is provided with a first lifter 4 for conveying thermoplastic elastomer particles into the heating mechanism 1, and a second lifter 5 for conveying softened thermoplastic elastomer particles into the pressurizing mechanism 2 is arranged between the heating mechanism 1 and the pressurizing mechanism 2.
In the embodiment, in order to heat and pressurize the thermoplastic elastomer particles synchronously, the efficiency is improved, and the high-pressure sealing and heating performance of the equipment is ensured; the heating mechanism 1 and the pressurizing mechanism 2 are both reaction kettles.
In the embodiment, in order to press the gas into the thermoplastic elastomer particles and avoid the gas from reacting with the material, no trace is left after foaming; the inert gas is nitrogen, carbon dioxide or the mixture of the nitrogen and the carbon dioxide.
In the embodiment, in order to ensure that the material is environment-friendly and nontoxic, and has the characteristics of high elasticity, aging resistance and the like; the thermoplastic elastomer granular material is one of TPE, TPU, TPEE or PEBAX or a mixture of two or more than two materials.
The utility model has high foaming efficiency, when the pressurizing mechanism 2 permeates inert gas into the softened thermoplastic elastomer particles, the heating mechanism 1 can synchronously heat a new batch of thermoplastic elastomer particles to soften the thermoplastic elastomer particles, and the foaming efficiency is improved by assembly line operation; based on the fact that the thermoplastic elastomer particles are foamed usually by heating and pressurizing, the thermoplastic elastomer particles are softened by heating, and inert gas enters the thermoplastic elastomer particles by pressurizing, the traditional foaming process is synchronously heated and pressurized, but in the initial stage, when the thermoplastic elastomer particles are not softened, the gas entering efficiency is low, the invention adopts the steps of heating and softening the thermoplastic elastomer particles, and then replacing a container for pressurizing and injecting gas, so that the efficiency is higher, in addition, the heating process is carried out in a reaction kettle, the volume expansion of the thermoplastic elastomer particles can not be caused by only heating the thermoplastic elastomer particles, compared with the traditional heating and pressurizing process in the reaction kettle, a part of the inert gas in the thermoplastic elastomer particles is flushed out of the material, so that the material generates certain expansion, but because the current temperature of the material is below the softening point, therefore, most of gas is still reserved in the material (the reserved gas can expand the material in the secondary foaming process to play a role), so that more materials can be placed in the reaction kettle with the same volume, the utilization efficiency of the whole reaction kettle is improved, and the cost of a single material in the whole production process is reduced.
The above only is the embodiment of the present invention, not limiting the patent protection scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (4)
1. A thermoplastic elastomer foaming device is characterized in that: the device comprises a heating mechanism for heating thermoplastic elastomer particles to be softened and a pressurizing mechanism for enabling the softened thermoplastic elastomer particles to be in a higher-than-atmospheric-pressure environment, wherein the pressurizing mechanism is connected with a gas generator for introducing at least one inert gas into the pressurizing mechanism so as to drive the gas into the softened thermoplastic elastomer particles.
2. The thermoplastic elastomer foaming device according to claim 1, characterized in that: the front end of the heating mechanism is provided with a first lifting machine used for conveying thermoplastic elastomer particles into the heating mechanism, and a second lifting machine used for conveying softened thermoplastic elastomer particles into the pressurizing mechanism is arranged between the heating mechanism and the pressurizing mechanism.
3. The thermoplastic elastomer foaming device according to claim 1, characterized in that: the heating mechanism and the pressurizing mechanism are both reaction kettles.
4. The thermoplastic elastomer foaming device according to claim 1, characterized in that: the inert gas is nitrogen or carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490965.4U CN212653749U (en) | 2019-12-31 | 2019-12-31 | Thermoplastic elastomer foaming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490965.4U CN212653749U (en) | 2019-12-31 | 2019-12-31 | Thermoplastic elastomer foaming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212653749U true CN212653749U (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922490965.4U Active CN212653749U (en) | 2019-12-31 | 2019-12-31 | Thermoplastic elastomer foaming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212653749U (en) |
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2019
- 2019-12-31 CN CN201922490965.4U patent/CN212653749U/en active Active
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Address after: No.17 Wubao Industrial Zone, Hongshan Town, Shishi City, Quanzhou City, Fujian Province 362700 Patentee after: Fujian Xingxun New Material Technology Co.,Ltd. Address before: 362200 Fengchi Industrial Zone, tangcuo village, Chidian Town, Jinjiang City, Quanzhou City, Fujian Province Patentee before: JINJIANG XINGXUN NEW MATERIAL TECHNOLOGY Co.,Ltd. |