TW200523095A - Forming method for controlling fine open cell core in fluid polymer and its apparatus - Google Patents

Abstract

The present invention relates to a forming method for controlling fine open cell core in fluid polymer and its apparatus, comprising: setting a gas pipe inside the transportation screw of injection or extrusion molding machine which connects to a fine bubble generating part (like microporous permeable metal head or microporous ceramic head) at the front end of the transportation screw; inputting gas from the pressurized pump or high pressure gas storage can behind the gas pipe through a gas inlet where the gas is indirectly heated by a heater on material pipe; outputting the high temperature gas from the fine bubble generating part to make the high temperature fine bubble in the fluid polymer material of that section, and comply with the transportation screw for smooth mixing, then injecting into the molding. Therefore, by controlling the on and off of the high pressure gas transportation, the mixture of fine bubble and the fluid polymer material in each section can be controlled as well, which provides a method of no production of open cell core on the surface of injection molding, open cell core in side or the generation of open cell surface entirely.

Description

200523095 V. Description of the invention (1) [The invention to which the invention belongs is a method and its device, forming a high-pressure gas material section in a chemical tube and connected to a metal transport head and a microporous gas cylinder. [Prior technology] General injection chemical conversion After the fluid, the polymer is allowed to grow into the molding mold after the polymerization. However, the agent usually releases the nitrogen and releases the nucleation pore material in the polymer. It is injected by the polymer material injection gas mixing section, and the chamber enters the nucleator. The foaming agent is used in the technical field. 】 Can control the micro gas nucleus in the fluid polymer material generator 2 A heater is installed on the outside of the conveying screw to melt the material, and a gas conveying tube is arranged in the conveying screw to fit the micro-end of the screw. The bubble generating element (such as a microporous ventilating ceramic head) controls the pressure pump or high-pressure gas storage to transmit or not to control the technical field of the formed fluid polymer gas nucleus or no gas nucleus. The polymer material used in the molding machine is extruded by injecting a physical foaming agent into the polymer material, and after stirring, the mixture containing the foaming agent unit cell is shot.

Hiii: The internal crystal of the polymer caused by the pressure drop = the reaction of gas to form a gas foam _ ^ ^, the characteristics are at the critical temperature can be divided into the effects of rolling nucleus, carbon monoxide and other gas nucleus: cause, 'from The previous patents for two-in-the-body such as the invention φ: using this technology for fluid molding ", its main No. 8 7 1 04336" Micro-bubble material as raw material, by ^ injection molding machine or extruder or liquid foaming Agent, the ^ k screw makes the fluid polymer and the fluid polymer makes the foaming agent, depressurizes the channel of the conveying screw, makes the flow two, $ mix, and then quickly accumulates with carbon dioxide gas or ^ = mouth material Nucleation; first body, from the foaming agent source into the screw 200523095 V. Description of the invention (2) Rod mixing section, the foaming agent toilet mixture is stirred through the screw, and then through the nozzle to make the polymer g ^ σ, the material is formed. Observe that the shaking enters the molding die 模 [Contents of the invention] First, the problem to be solved: 1 · The conventional polymer material nucleation method, its nucleation, can not only be in the gaseous, liquid or solid state: Yu, Λ Β 桠 material pore size is less than 35 micro Hereinafter, by using the resultant gas to run micron micro foamed material, in order to read Λ: ... average method, then Service

Expensive, high cost, and its economic benefits are not great. ^ Micron foam material price 袼 g 2 · The injection port of the foaming agent is connected to the mixing section of P, and is 2 ′ ,,; g, and is connected to the rotary snail camphor foaming agent and fluid. Polymer wire 2: fixed-point injection, and then through the screw, the screw 'in the fluid polymer material = Ϊ 2 in the material tube section to mix J g = foam agent K hair products: easy to cause air bubbles to leak and not ;; relative cost improve. The foaming time of the mixing of material materials is long, and its speed is slow. The non-mold fluid polymer material in the core: $ 2: The proportion of foaming agent required for molding and the separation control of non-nucleated parts are not easy to control. The phenomenon happened. The connection of the X section is very difficult, and the instability of the compound material of the foaming agent is reversed. To heat this f σ, an inverse soil must be installed. One = stop polymerization. The solution: The installation will increase the equipment cost and failure rate.

200523095 V. Description of the invention (3) 1 · The internal head of the hair and microporous ceramics conveying screw is pushed, and the microporous gas cylinder is pushed, and at the same time, the intermediate parts (such as the microporous regular microporous powder 'are simultaneously reduced to the critical point, To provide micro-bubbles to the polymer bubble generation unit to achieve the required 2. The microporous ceramic head section of the hair 'controllable = composite material mold surface is non-microcells, while the internal 3. irregular hair Micro-hole screw with high

A micro-bubble generating element (head) is installed on the conveying screw, and the part is connected to the aforementioned micro-bubble generating element pottery head, so that the gas is connected through the heater provided on the outer edge of the tube. The gas delivery pipe is pre-heated, and the air-permeable metal head and micro-porous ceramic head are used. The micro-bubbles are produced, and the agitation and transmission of the screw in the fluid wheel are performed directly, and then the pressure and pressure are reduced. Disperse uniformly in the same material, and the micro-gas parts (such as micro-porous breathable metal head, micro 35 micron or less. Ming application of micro-bubble generating elements (such as 2 Pei set at the front end of the conveying screw, intermittent supply, make injection The molding die is clearly connected and easy to control; moreover, the polymer is enclosed in the non-formed polymer material to achieve the composition of the micronucleus in the table: the package; the raw element =, and the polymer will not Via the micro / JBL, the Λ compound material is used to melt the gas such as micropores (such as a pressure pump to polymerize and then eject the micro from the inside to the t compound to form the pores of the nucleus when the material is shaped. Breathable transport of micropores or high materials Bubbles The material enters the micro, and reaches the size of the head) The metal head tube is set in the breathable gold pressure gas material to melt and produce the element core that is not filled with the internal expansion mold gas to the micro gas. The inner nucleation and non-nucleation of the micro-bubble supply can provide a new inner surface of the polymer material that is adhered to the core. The inner surface of the polymer is smooth and non-capillary.

$ 7 pages

200523095 Squeeze the micro-bubble to reduce the failure rate of the outer tube 1 1 through the conveying screw 1 4: The foaming source foams the reaction; the front end of the air port 17 and the external rod 14 is equipped with a 'microporous ceramic head, micro Porcelain ceramics, and the microporous ruler is replaced with micro-bubble production), and connected to the front generating element 18 (so, please cooperate with high-pressure gas through the rotary screw 1 4 of the outer edge of the feed tube 1 1 and add micro-bubble production to make Fifth, the description of the hot gas (4) The blocking phenomenon is caused by the use of high-use check valves to reduce equipment costs. [Embodiment] The following is a method for generating a micro-gas interval according to the present invention. In one embodiment, an injection or extruder 1, 1 is used to melt the polymer material 13 and permeate the fluid polymer material 15 to propel a gas conveying pipe 16 of the polymer material. Pressurized gas storage tank, and when conveying the screw element 18 (such as the microporous breathable metal head raw member 18 (such as the microporous breathable metal full of irregular interconnected micropores, the size of the micro gas nucleus to be generated is given to the hole breathable metal head) Microporous ceramic head 'Make the gas delivery tube 16 communicate with the micro-bubble head, micro-porous ceramic head); during the stroke of the gas delivery camp 16 of the pressure pump or high-pressure gas storage cylinder, the material 13 is melted, and at the same time, the delivery tube is indirectly The gas in 16 is heated, and then it is sent to the ventilated metal master and microporous ceramic head.) It is then flushed out, so it is not necessary to stir the 0-nucleus in the fluid polymer material. Equipped with a stirrer with a heater 12 to apply the melted system to all the applicable conveying screws 1 4 with a pressurized pump or a micro-bubble generated), the micro-bubble head) is distributed from the inside to the outside , The gas can be transported by the generated element 1 8 (such as the micro gas transmission pipe 16 as shown in the fourth figure of the microporous breathable metal: adding the air inlet 17 and entering the heater 12 to the polymerization heat '). Element 1 8 (e.g.

200523095 V. Description of the invention (5) Output from the inside to the outside, the # material 1 5 inside, and by the wheel to send 2 1 3 f into the fluid polymer material in this section has micro-bubble polymer material / d :: 死 ， ㈤ At the same time, the mixing and homogenizing device can reach the micro-bubble generation and production end of the storage section 19, and the bubble polymer material 15, Y, push ☆ at the same time 'make the micro-mixing uniform, and make the temperature critical, , W pass, the outlet 20 enters the molding die 21 to reduce the pressure of the micro air cell nucleating polymer ^ 'When the polymer material is hardened and formed, a nucleation method generated in the polymer material to provide a micro air cell nucleus in a uniform existence The micro-bubbles generate i 1 and then the micro-pores on the surface are different. The peaks 8 = 3 7 are filled with irregular micro-holes outward, which can reduce the failure rate and 'low cost r. t, without the need to use a check valve 'Please refer to the second and third picture # Can be controlled by the gas transport or not, y material ^, gas cell nucleation section control, gas metal head, microporous ceramic head) The material generating element 18 (such as the microporous through intermittent supply of gas or when the supply is stopped, output microbubbles to provide access to the storage section 19, & for micro-won cry two make the fluid polymer material 15 in Micro-bubble fluid polymer material ^ 1, polymer material 15, or no continuous or intermittent supply of micro-bubbles = = formation of gas-free nucleus polymer material 15, two: the aforementioned micro-bubble generation magic cow 17 can be connected to the carousel The position of H1; however, the injection volume of 2 fluid polymer material 15 is injected into the molding volume of the molding die 21. The foregoing description can be seen from the third figure that when no material 15 is injected into the molding die 21 first, the polymer Materials & Type Characteristics \ No Surface 200523095

V. Description of the invention (6) The micro-bubble polymer material 15 is first attached to the surface of the molding die 21 in a shape and slippery surface, followed by the micro-bubble polymer material 5 and then injected into the mold 21 1 to The effect of forming a polymer material with micro-gas nuclei 丨 5, the effect of covering the polymer material 15 of micro-nucleus with no air-cell eucalyptus fluid polymer material 15 ":

The second embodiment of the present invention is shown in FIG. 1-B. The aforementioned micro-bubble generating element 18 is made into a solid metal element 18, which is fixed on the rotary screw 14 and traverses a gas conveying pipe through the center.丨 8 丨, and communicates with the gas conveying pipe 16 in the conveying screw 14, and a plurality of ventilation holes 1 8 2 ′ are formed on the periphery of the solid metal element 18, and the ventilation holes 1 8 2 communicate with the gas. ^ Channel 181 'communicates with each other, and at each vent hole 1821, a microporous ventilation block 1 8 3 ′ is fixed therein, and the microporous ventilation block 1 8 3 is in contact with the micro-bubble generating element of the first embodiment. The material of 18 is the same, so that the micro-bubbles enter the gas-conveying pipe 181 'from the gas-conveying pipe 16, and then pass through the vent holes 182' and output the micro-bubbles' from the micro-pores of the micro-porous block 18 3 to provide the same as the first embodiment described above. The same effect.

A third embodiment of the present invention is shown in the first figure-C. The above-mentioned micro-bubble generating element 18 is made into a hollow metal element 1 8 " so that an air chamber 1 8 4π is formed inside, and A through-hole 185 π is opened behind the hollow metal element 18 ″, and communicates with the gas transfer pipe 16 in the conveying screw 14, and a plurality of ventilation holes 1 8 2 are penetrated around the hollow metal element 18 ″. ”, And a microporous ventilation block 1 8 3 π is fixedly located in the ventilation hole 1 8 2 π, and the microporous ventilation block 1 8 3 π is the same material as the micro-bubble generating element of the first embodiment, The microbubbles are made to enter the gas chamber 1 8 4 π from the gas delivery pipe 16 and output microbubbles through the micropores of the microporous ventilation block 183 π, respectively.

Page 10 200523095 V. Description of the invention (7) Those who have the same effect as the fourth embodiment of the present invention & /, is a polymer applied to the extruder ^ Please refer to the fifth figure-A, B, [ No material on the outside? At the time, 'the device for maintaining the nucleus of the holding device./, to make the surface smooth, and the inner shunt ring 22, the outer edge of the front ring 22 of the micro-bubble generating element 18 and the edge of the material are provided. Axial ridge "I, polymer material channel 222 B = ^ directional ridge 221 °, forming 18 ^ ^ ^ 22, and the inner edge of the shunt ring 22 and micro-bubble production

The polymer material is fine; therefore, please match J ϋ | S i 21 · The fluid polymer material 15 is pushed, that is, = i; = rr2 2 2 passes, and a part is covered with the right material 々, ί 道 223 Enter, make the bubble-free fluid polymer, milk foam fluid fluid polymer material 1 5 and at the same time self-extracting the animal's Γ to form an air-free nuclear polymer material 1 5 on the inside # 二 上 Ϊpolymer material 1 5 Π, In order to provide the effect of aerobic nucleus polymer material complex micro-oxygen nucleus polymer material 丨 5 ”. The ministry set up to make the fifth part of the aerobic element consists of the material 1 σ 224 with: material 1 5

Wugu: The above-mentioned "the present invention forms micro-bubbles in fluid polymerization with various media gases" as a polymer material. After molding, $ ^ nuclei are formed and the microbubbles are directly inside the polymer material. Mix to make uniform micro gas nucleus inside the present compound, and choose micro bubble generation = micropore size of pieces (such as microporous breathable metal head, microporous ceramic head). ^ Provide microgas The size of the nucleus can also be controlled through the output of microbubbles, providing different mixing of different sections to meet the conditions required for the molding of different polymer materials, with fast and uniform nucleation to improve quality, and the device

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Page 12 200523095 Brief description of the drawings [Explanation of the drawings] The first diagram is a schematic diagram of a device for generating a micro-bubble generating element and a generating method according to the first embodiment of the present invention. Fig. 1-A is a schematic view of enlargement of micropores on the surface of a microbubble generating element according to the first embodiment of the present invention. Fig. 1-B is a schematic diagram showing the structure of a microbubble generating element according to a second embodiment of the present invention. Fig. 1-C is a schematic view showing the structure of a microbubble generating element according to a third embodiment of the present invention.

The second figure is a schematic diagram of the interval conveyance of the bubble-generating and non-bubble polymer materials of the present invention. The third diagram is a schematic diagram of the nucleation and non-nucleation of the polymer material injected into the mold of the second diagram. The fourth figure is a schematic diagram of the forming method of the invention using an extruder on a polymer material to generate gas nuclei. The fifth figure-A is a perspective view of a shunt ring of the present invention applied to an extruder. Fifth Figure-B is a schematic front view of the shunt ring of the present invention. Fig. 5-C is a schematic plan view of a combination of a shunt ring and a microbubble generating element according to the present invention.

The sixth diagram is a schematic diagram showing the separation structure and method of generating gas nucleus and non-gas nucleus polymer materials by setting a shunt ring on the micro-bubble generating element of the extruder according to the present invention. [Symbol description] Injection or extrusion machine 1, 1 'Feed tube 1 1

Page 13 200523095 Simple description of the heater 1 2 Conveying screw 1 4 Gas delivery tube 1 6 Micro-bubble generating element 1 8 Storage section 1 9 Molding die 21 Solid metal element 1 8 'Vent hole 1 8 2' Micro hole Breathable block 1 8 3 'Air chamber 1 8 4 π' Microporous breathable block 1 8 3 ”Axial convex strip 2 2 1 Micro-bubble polymer material through polymer material 1 3 Fluid polymer material j 5 Inlet port 1 7 Micro-bubble polymer material 15, ejection port 20 Micro-nucleus polymer material 15 5, gas delivery pipe 丨 8 j, vent hole 1 8 2 1, hollow metal element 1 8 ”through hole 1 8 5 π Split ring 2 2 Bubble-free polymer material channel 2 2 2 lane 223 Exhaust port 224

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Claims (1)

200523095 The conveying screw is heated; the conveying screw is used for the microporous conveying section and the micro-bubbles to gather the bubbles. The nucleus is on the rod of the flow extruder, which is as follows: it is not used to convey the gas cylinder phase, and the internal gas transfer tube is used to make micro gas nuclei in the fluid polymer material. Foaming agent, carbon oxide, nitrogen or other gaseous source materials available for foaming to form micro-gas nuclei; method for forming gas nuclei 6. Application scope 1 · A controllable device and its device It can provide polymer systems as follows: ~ a • Pass high-pressure gas through the heater on the outer edge of the material. B • The high-temperature gas enters the gas from the inside to the outside. C • The microbubbles mentioned above and Push to form a uniform ^ Therefore, shoot or extrude ^ / bag, stir, push simultaneously = inside the composite material, so that the micro two micro-gas nucleus polymer material 2. A device that can control the micro-gas, tied to The injection or material pipe is equipped with a conveying screw conveying screw to push it. Its characteristics are the oxygen gas conveying pipe, which is composed of a pressure pump or a high-pressure gas-microbubble generating element. The gas is transported inside the gas. tube The micro-bubble generating element at the end is used to produce uniform micro-bubbles; the composite material disturbs the polymer material through the conveying screw; the polymer material is generated by the micro-supply and uniform mixing of the micro-bubbles and the material during the molding process to form a homogeneous polymer. The material is generated by the right Λ batch method of the outer edge of the tube. The Is edge δ has a heater to heat and melt the polymer material. The air inlet is connected to the interior of the microbubble generating element. 200523095 6. Scope of patent application Therefore, the micro-bubbles are output by the irregular micro-pores of the micro-bubble generating element from the inside to the outside, so there is no need to use a check valve to block the backflow to provide micro-bubble generation, stirring, and pushing fluid polymer materials Simultaneously, to achieve the effect of quickly and uniformly mixing microbubbles. 3. The method and device for controlling the generation of micro gas nuclei in a fluid polymer material as described in any one of claims 1 and 2, and wherein the micro-bubble generating element may be a microporous breathable metal head By. 4. The method and device for controlling the generation of micro gas nuclei in a fluid polymer material as described in any one of claims 1 and 2, and wherein the micro-bubble generating element may be a microporous ceramic head . 5 · The method and device for controlling the generation of micro gas _ nuclei in a fluid polymer material as described in any one of claims 1 and 2, and wherein the source of the high-pressure gas is pumped by a pressurized pump Or high-pressure gas tank. 6. According to the method for controlling the generation of micro gas nuclei in a fluid polymer material as described in item 1 of the scope of the patent application, in which the source of the high pressure gas is controlled, the micro bubbles of the micro bubble generating element can be controlled for continuous output or interval output. , The fluid polymer material and the micro-bubble generating section are spaced or continuously mixed to provide an injection or extrusion molding method. 7. The method for controlling the generation of micro gas nuclei in a fluid polymer material as described in item 1 and 2 of the scope of the patent application, wherein the micro-bubble generating element can provide micro-bubbles below 35 microns, so that the polymer material can generate Micro gas nuclei below 35 microns. _ 8. The method and device for controlling the generation of micro gas nuclei in a fluid polymer material as described in any one of claims 1 and 2, and wherein the micro gas Page 16 200523095 VI. Scope of patent application The bubble generating element can be made into a solid metal element, which traverses a gas conveying pipe at its center and communicates with the gas conveying pipe in the conveying screw, and a number of holes are formed around the solid metal element. Each vent hole is in communication with the gas delivery pipe, and a microporous ventilation block is fixedly located in each vent hole, and the microporous ventilation block has irregular microporosity. 9. The method and apparatus for controlling the generation of micro gas nuclei in a fluid polymer material as described in any one of claims 1 and 2, and wherein the micro-bubble generating element can be made into a hollow metal element so that An air chamber is formed inside, and a through hole is opened behind the hollow metal element, and communicates with the gas transfer tube in the conveying screw, and a plurality of vent holes are penetrated through the periphery of the hollow metal element, and are located inside the vent hole. A microporous ventilation block is provided, and the microporous ventilation block has irregular microporosity. 10. The method and device for controlling the generation of micro gas nuclei in a fluid polymer material as described in any of claims 1 and 2, and wherein the outer edge sleeve of the micro bubble generating element used on the extruder is used. A shunt ring is provided, the periphery of which is provided with an axial convex strip, and is fixed to the inner edge of the material pipe, so that the height of the axial convex strip between the outer edge of the shunt ring and the inner edge of the material pipe forms a bubble-free polymer material channel, and the shunt ring Between the inner edge and the micro-bubble generating element, a micro-bubble polymer material channel is formed, so that the molded polymer material has the effect of covering the micro-gas nuclei with non-gas nuclei. 1 1 · The method and device for controlling the generation of micro gas nuclei in a fluid polymer material as described in any of claims 4, 5, 8, 9 Microporous breathable metal head or microporous ceramic head of the same material to obtain the required microgas nucleus size. Page 17