Method for controlling microscopic bubble nucleation in fluid polymer material production and its apparatus

A polymer material, a technology for generating devices, applied in chemical instruments and methods, mixers with rotary stirring devices, mixers, etc. The ratio of the agent and the difficult connection of the non-nuclear segment are difficult to achieve, and the effect of easy control is achieved.

Inactive Publication Date: 2006-11-22
EVERFOCUS WORLDWIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. It is not easy to control the separation of the non-nucleating part and the nucleating part of the fluid polymer material heated and melted in the material tube, and it is quite difficult to control the required foaming agent ratio and the co

Method used

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  • Method for controlling microscopic bubble nucleation in fluid polymer material production and its apparatus
  • Method for controlling microscopic bubble nucleation in fluid polymer material production and its apparatus
  • Method for controlling microscopic bubble nucleation in fluid polymer material production and its apparatus

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Embodiment Construction

[0033] The first embodiment of the present invention, please refer to FIG. 1 and FIG. 1-A, is to apply a heater 12 installed on the outer edge of the material pipe 11 in the injection or extruder 1, 1' to melt the polymer material 13, and A conveying screw 14 is installed in the material pipe 11, and the molten polymer material 15 is pushed forward by the stirring of the conveying screw 14; and the foaming source is the use of all applicable gases, such as carbon dioxide, nitrogen or other The gaseous source for foaming is used to carry out the foaming reaction of the polymer material; a gas conveying pipe 16 is arranged in the conveying screw 14, and a screw shaft seat 141 is penetrated at the rear end and is fixed on the transmission disc 145, and is connected with a The plug 144 blocks the rear end of the gas delivery pipe 16; the screw shaft seat 141 is provided with an annular air groove 142, and the air inlet 17 communicated with the annular air groove 142 and located in ...

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Abstract

A method and device that can control the generation of microbubble nuclei in fluid polymer materials, is to install a gas delivery tube in the delivery screw of a general injection or extrusion molding machine, and connect to the microbubble generator installed at the front end of the delivery screw Components (such as microporous breathable metal head, microporous ceramic head), and then through the booster pump or high-pressure gas storage tank behind the gas delivery pipe, and then input from the air inlet, so that the gas passes through the electric heater on the material pipe for indirect heating, and then the high-temperature gas is output from the micropores of the above-mentioned microbubble generating component, so that the high-temperature microbubbles are directly in the fluid polymer material in the section, mixed evenly with the conveying screw, and then injected into the molding mold; therefore , to control the action or stop of high-pressure gas transmission, which can control whether each section of the fluid polymer material is mixed with microbubbles, so as to provide no bubble nuclei on the surface of the injection molding mold, but have bubble nuclei inside, or generate microbubble nuclei as a whole method.

Description

technical field [0001] The invention relates to a method and a device for generating controllable micro-bubble nuclei in a fluid polymer material. A heater is arranged outside the conveying screw to melt the polymer material in the material pipe, and a heater is arranged inside the conveying screw. A gas conveying pipe connected to the micro-bubble generating component at the front end of the conveying screw, by controlling the high-pressure gas transmission action of the pressurizing pump or the high-pressure gas storage cylinder, to control the formation of bubble nuclei or No bubble core. Background technique [0002] Generally, the polymer material used in the injection or extrusion molding machine is melted into a fluid, by injecting a physical foaming agent into the polymer material, and after stirring, the polymer contains a mixture of foaming agent unit cells, The mixture is then injected into the molding die to solidify, so that the pressure drop in the mixture pro...

Claims

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Application Information

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IPC IPC(8): B29C45/46B29C37/00B29C45/17B29C48/515
CPCB29B7/42B29B7/7414B29C44/3446B29C44/3449B29C44/3469B29C45/1816B29K2105/0005B29C48/29B29C48/022B29C48/03B29C48/286B29C48/53B29C48/515B01F23/2351B01F23/2373B01F27/2122
Inventor 张晋淙
Owner EVERFOCUS WORLDWIDE
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