TWI233877B - 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

1233877

--Case No. 100134 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention is a method and a device for controlling the generation of micro gas nuclei in a fluid polymer material, which is covered by a conveying screw. A heater is provided to illuminate the polymer material in the material tube, and a gas conveying ^ is provided in the conveying screw, and a micro-bubble generating element (such as a microporous through 1 metal head, microporous ceramics) connected to the front end of the conveying screw is provided. (Head), by controlling the high-pressure gas transmission action of the pressurized pump or high-pressure gas pump and the gas cylinder to control the formation of gas nucleus or non-nucleus of the fluid polymer material section [former technology] '/ After forming into a stream, the forming cell growth agent is introduced to release the polymer polymer pore material, and the material injection mixing chamber enters the foaming rod to mix into the ejection body, and the polymerization mold is coagulated. However, it is often used to inject nitrogen and internally nucleate the injected polymer into the gas, and the nucleator agent is used to make the section, or the bet contains solids, and the polymerization is performed using a pre-molded material or liquid with oxygen cells. And the general purpose two through the injection molding machine physical foaming with foaming agent crystals to produce organic compounds in the mixture material material, the effect of breaking, oxygen core; such as the patent, such as "it is mainly raw materials, borrowing The pressure of the blowing agent fluid polymer channel is depressurized, so that the carbon oxide gas screw stirs the hair mixture in the polymer cell due to the pressure of the chemical and its characteristic carbon, etc. Therefore, the application for the application is by rotation and the material stirs the fluid or In the liquid foaming agent and the compound material, the compound is mixed and then promoted to polymerize to form a gas system at a critical temperature. The gas is used as an application of this technology. The injection molding machine or screw No. 87104336 uses the fluid foaming agent in Mixing and mixing, and then the compound material is fast. The fluid polymer material from the foaming agent source can be divided into the fluid and the fluid under the foaming of the crystals of the mixed compound. Extruder extruder polymer feed screw nucleation from accumulation; formation of feed material

Page 5 1233877 _ Case No. 93100134 V. Description of the invention (2), ^ month Said __ mixture, and then through the nozzle,. The polymer material nucleates in the molding die [Content of the invention] 1. Problems to be solved: 1 · The conventional polymer material can not be nucleated. It cannot be used only in the gaseous state. The pore size of the polymer material obtained is less than 35 microns. The following or solid foaming agents can be used to obtain micro-cellular cells using micro-foaming materials. The bubbles formed by At can not be averaged, so it is expensive and costly. Its economic efficiency = no = but the micro-foaming material is expensive. 2 The injection port of the blowing agent < communicates with the stirring section, and ;; is at the outer edge of the tube, and is connected to the conveying screw foaming agent and the fluid polymer material. The material is noted before mixing: i. Two foaming agents should be used, and the agent and polymer materials should be approved; = = = Relative cost increases. , Slow catch, heating in the material 丨 the fluid polymer material of the grain, the separation of the non-nucleated part and the nucleated part is controlled, and the phenomenon occurs. Chickens are unstable ^ 4 · The injection port of the foaming agent must be equipped with a check valve to: material flow back, but this device will increase the cost of the equipment and the difficulties and solutions ... κ The present invention uses a micro-bubble generating element (such as microporous ventilation

^ 孔 陶 research head) is installed on the conveying screw ’and the gas conveying pipe is provided in III Wl _____________ '

1233877

V. Description of the invention (3) The inside of the conveying screw is connected with the aforementioned _, metal head, and micro-porous Taurman head, so that the gas ^ (such as the micro-porous breathable gold gas storage 1 is pushed through the outer edge of the tube or high pressure Gas parts (such as microporous breathable metal head, micro [=;, ;;;: bubbles generate meta-micropores to output microbubbles, m: outwardly filled and scattered, and at the same time conveyed by the stirring toilet of the conveying screw " l Different ^: The internal expansion of the material material decreases to the critical temperature and pressure, and it is taken into the molding die as n is taken out to provide micro-bubble generation, stirring, and two materials to form micro-gas nuclei in the polymer material. Dispersion uniform d: OK, to achieve micro-air bubbles to generate magic cattle (such as the microporous ventilation head Hai 1 nucleus size can be as small as 35 micrometers required: metal head, imitation hole ceramic head) micropores 2 · The present invention uses micro-bubbles to produce microporous pottery-pan heads and is installed on conveying screws = (such as W breathable metal heads, sections, which can control intermittent supply to make J into: ^ Polymer materials supplied by micro-bubbles are connected Clear and easy | 6th, the surface of nucleation and non-nucleation mold is non-nuclear polymer; For polymers formed with micro-gas nuclei: attached: = :: m inside the compound material, and :: with micro-gas nuclei: group surface is smooth without pores 3. The micro-bubble generating element of the present invention is irregular Micro-holes, so that the mouth of a person has money from the inside to the outside, so it is not necessary to use =: decompression micro-bubble to flush out [Implementation] Equipment cost, reduce the failure rate. Page 7 1233877 said modified tiger 93100134 V. Description of the invention (4) The stirring of the micro-nucleus in the fluid polymer material by the interval nii is detailed in the following examples: -Figure—A, I apply the force u to the outer edge of the tube n inside the injection or extrusion machine i M ′ to dissolve the polymer material 1 3, and bring it to the end of the year, ... When the screw 14 is reached, the carcass used is propelled: two, "15"; and the foaming source uses all foaming reactions that can respond to the material of the second screw; C: 6 'is set in the conveying screw 14. The rear end is provided with a screw shaft seat 141 to be fixed to the transmission wind, and a plug 144 is used to block the rear end of the gas delivery pipe 16 丄 4 screw The shaft seat 141 is provided with an annular air groove 142 ′ and a plurality of communication holes 143 on the upper tooth of the cup 14 which are connected to the two air ports 17 and are located in the annular air groove 142. The pipe 16 communicates with each other through the aforementioned air inlet 丨 7, the annular air groove 丨 42 $ through hole 143 and the gas conveying pipe 16 communicate with each other, so that the conveying screw 14 is rotated by an inch, and the screw shaft seat 1 41 is fixed, In order not to hinder the transportation of gas, a pressure pump or a high-pressure gas tank is connected externally through the air inlet 17 and a micro-bubble generating element 18 is installed at the front end of the rotary screw 14. , Microporous ceramic head), the microbubble generating element 18 (such as a microporous breathable metal head, microporous ceramic head) is covered from inside to outside with irregular interconnected micropores, and the size of the micropores can be The micro-bubble generating element 18 (such as a microporous breathable metal head and a microporous head) is replaced with the required micro-gas nucleus size, and is connected to the aforementioned gas delivery pipe 16 so that the gas delivery pipe 16 and the micro-bubbles are generated. Element 1 8 (such as microporous breathable metal head, microporous ceramic research head), pass; therefore Please cooperate with the fourth picture: pressurized pump or high-pressure gas 1233877 — ^ No. 93100134 V. Description of the invention (5) 'Indirectly from the outer edge of the material tube 11 to the rotary screw 1 4 and then into the micro-bubble to produce a probe ) 'Make the hot gas bubble directly into the section rod 14 to stir and fuse, and at the same time 15 advance to the front end of the storage mixing and pushing at the same time,' through the injection port 20 access degree 'to make the polymer material hard 15' 'to provide Micro gas nuclear method. The micropores on the surface of the microbubble generator will not reduce the failure rate. For details, please refer to the second and the third. The gas supply and gas metal head, microporous ceramics intermittently supply gas or stop entering the storage area. In section 19, the microbubble fluid polymer material is continuously or intermittently supplied to form a gas-free nucleus polymer material 15 ″, or the entire microbubble generating element is heated by the heater 12 and the element 18 ( The fluid aggregate on it will mix the mixing and homogenizing section 1 9 to make the mixing and homogeneous molding die 2 1 into a homogeneous part 1 8 when the molding is performed. Material 15, micro-bubble material 15 with micro-air parts 17 can be modified, polymer material 1 3 melts, and at the same time, the gas in the carousel 16 is heated, such as micro-porous metal vents, micro-porous ceramic micro-pores are output from the inside to the outside Then, inside the micro-composite material 15, the micro-bubble polymer material with the micro-bubble polymer material conveying the helical sentence is used to reach the micro-bubble polymer material that generates and stirs the micro-bubble. Wen 'generate micro air cell nucleation polymer Sentences exist in the polymer material from the inside to the outside of the phenomenon of flow, and the: The micro-air cells and micro-bubbles generate micro-pores to stop the timing, so that the flow of bubbles and fluids gather to enter the molding 'to reach the shot, while the internal cells The nuclear polymer is full of irregular micropores, no need to use a check valve, the nucleation section is controlled, and the element 18 (such as the micropores seep through microbubbles to provide bulk polymer material 15 in the composite material 15 ' Or the moldless 21 is selected in accordance with the aforementioned selection and the inside surface of the molding die 21 has a micro gas nucleus polymer material 1 5π; of course, 1233877 --- i ^., 93100134_ year, month, and amendment V. Description of the invention (6) '- ------ η With 2 fluid polymer materials 丨 5 injected into the molding volume of the molding die 21. Material = ί Hung Ming 'can be seen from the third figure' in the microbubble-free polymer f 枓 15 First shot into the molding die 21, according to the molding characteristics of the polymer material, the microbubble-free polymer material 15 is first attached to the surface of the molding die 21 to form a smooth surface, followed by the microbubble polymer material 5 And then injected into the molding die 21 'to form a polymer material 15 "with micro gas nuclei, so that airless The effect of the nuclear fluid polymer material 15 covering the micro-gas nuclear polymer material 丨 5 ". For the second embodiment of the present invention, please refer to the first figure-B: the aforementioned micro-bubble generating element 1 8 A solid metal element 18 is made, which is fixed on the conveying screw 14 and traverses a gas conveying pipe 181 through the center, and communicates with the gas conveying pipe 16 in the conveying screw $ 14, and is around the solid metal element M, A plurality of ventilation holes 1 8 2 ′ are penetrated, and the ventilation holes 1 8 2 are communicated with the gas delivery pipe 181 ′, and a microporous ventilation block 1 8 3 ′ is fixedly located inside each of the ventilation openings 1821 ′, The material of the microporous ventilation block 1 8 3 ′ is the same as that of the micro bubble generating element 18 of the first embodiment, so that the micro air bubbles enter the gas transportation pipe 1 8 1 ′ from the gas delivery pipe 16 and then pass through the ventilation holes 18 respectively. 2 ′, and the micro-bubbles are output from the micro-pores of the micro-porous breathable block 1 8 3 ′ to provide the same effect as the first embodiment. A third embodiment of the present invention is shown in FIG. 1-C. The micro-bubble generating element 18 described above is made into a hollow metal element 18π, and an air chamber 184π ′ is formed in the interior. A through hole 1 8 5 ′ is opened behind the metal element 18 ″, and communicates with the gas transfer pipe 16 in the conveying screw 14 above, and a plurality of vent holes 1 8 2π are penetrated around the hollow metal element 1 8π. A microporous ventilation block 1 8 3 ′ is fixedly located in the vent hole 1 8 2 ″, and the microporous ventilation block 1 8 3 ′ is the same material as the micro-bubble generating element of the first embodiment. '

Page 10, 1233877, amended in the month of lS_931〇〇i3 £ V. Description of the invention (7) Make micro-bubbles from the gas wheel's general hole to ventilate the coffee ": 1 out of the room 1 =, and then the same effect as the example. U foam, which is also used for the fourth force A of the present invention is applied to the extruder; please refer to the fifth figure-A, B, C: The composite material is externally : The material is used to hold the extruded gas-gathering nucleus in the expulsion temple. It generates a shunt ring 22 inside the micro-smooth surface. The division rule is a milk, and the front end of the element 18 is covered with a polymer. Material material channel 222, and the convex strip 221 is moderate, forming non-bubbles 18 to form micro-bubbles; two materials: = 2 内 -Γ ^ ^ ^ Γ- »One, therefore, please cooperate with the certificate: 闰 iif ϋ 二 θ 所 · The fluid polymer material 15 is advanced, that is: it is a bubble-free polymer material channel 222 and the bubble polymer material channel 223 enters f 3 ^ by air = = thing: material 15 'and self-extrude at the same time = micro gas nuclei Polymer material G, Ji :: Second: Material two 15 'The interior has a micro-air-nucleus polymer material 15 ", a gas-nucleus polymer material 15 packets MΪ The “纟 invention uses various gases that can be used as media to form microbubbles in the fluid-human η teaching L” as a polymer material. After molding, the two 2 捋 generate homogeneous micro-gas nuclei in the mixture, and Official components (such as microporous breathable metal heads, micropores 3, the size of the micronucleus for nucleus penetration at the same time) = & for different mixing of different sections, ^ & different polymers 1233877 case number 93100134 Amendment V. Description of invention (8) The required conditions of type (8) are fast and uniform nucleation to improve quality, and the device is simple and can reduce costs. It is in line with the industrial availability and progressive requirements of the patent law. The Bureau's Mingjian, granting patents at an early date, has a sense of virtue.

Page 12 1233877 _Case No. 93100134_ Year Month Revision _ Brief Description of Drawings [Illustration of Drawings] The first drawing is a schematic diagram of a device for a microbubble 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 section interval φ 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 plane combination of a shunt ring and a micro-bubble generating element of the present invention

Illustration.钃 I The sixth diagram is a schematic diagram showing a separation structure and a method of generating a gas nucleus and a non-gas nucleus polymer material by setting a shunt ring on a microbubble generating element of an extruder according to the present invention. [Symbol description] Injection or extrusion machine 1, Γ feed tube 11

Page 13 1233877 _Case No. 93100134_ ± Simple description of the month Correction heater 1 2 Conveying screw 1 4 Annular air groove 142 Plug 1 4 4 Fluid polymer material 1 5 Inlet port 1 7 Micro-bubble polymer material 1 5 'Injection port 2 0 Micro gas nuclear polymer material 1 5π Gas delivery pipe 18Γ Ventilation orifice 1821' Hollow metal element 1 8π Through hole 1 8 5π Shunt ring 2 2 Bubble-free polymer material channel 2 2 2 Polymer material 1 3 Screw shaft seat 1 4 1 Communication hole 1 4 3 Drive plate 1 4 5 Gas delivery tube 1 6 Micro-bubble generating element 1 8 Storage section 19 Forming die 21 Solid metal element 1 8 'Vent hole 1 8 2' Micro Porous block 183 'Air chamber 184 "' Microporous block 183π Axial projection 221 Micro-bubble polymer channel 2 2 3

Exit 2 2 4

Page 14

Claims (1)

1233877 Amendment VI, Shen ^^ ~, the formation method of the micro gas nucleus in the fluid polymer material could be two = extruder molding machine, using gas as the foaming agent, and = polymer or other for foaming use The gaseous source of the gas is not to form a micro-gas nucleus; it forms a gas nucleus for a • to pass high-pressure gas through the inner side of the cicada rod: 糸 The gas conveying pipe between the heaters on the outer edge of the tube The application makes the gas bf * =, the tritium gas enters the front end of the conveying screw to generate micro-bubbles-the lice body has uniform micro-pores output from the inside to the outside 2: generating 7 " pieces, c • the aforementioned micro-bubbles in this section and polymerization 2 jn Mix and push, change the material of Tongshi 仏 A through conveying cicada 浐 to form a uniform micro-bubble polymer. Good M · system birch. Therefore, the micro-bubbles that are ejected or extruded gather, /, bubbles, stir, push Simultaneously, the feeding is performed by generating the micro-polymer material, and mixing the micro-bubble polymer material with the micro-bubble to homogeneously the micro-gas nucleus polymer material. During the forming process, a uniform ^ 2 · — a kind of controllable micro gas nucleus to the fluid person, is attached to the outer edge of the tube of the injection or extruder. The material generating device is equipped with a conveying screw to provide the polymer ^ The heater is pushed in the material pipe; it is characterized by: ',' 熔化 Hot melting and conveying screw-a gas conveying pipe, which is located inside the conveying screw and the pressure pump or high-pressure gas reservoir phase I, and The air inlet is a micro-bubble generating element, which is composed from the inside to the micro-pores, and the outside of the gas delivery pipe is irregularly interconnected with each other; the inside of the micro-bubble generating element is therefore 'the micro-bubble is generated by the micro-bubble generating element Irregular micropores Page 15 δ // Yiyu /, patent application range 93100134-―Amends within the day and turns out, but does not ...-together: drop, push: body dagger ::::: flow to provide microbubbles " city Effector of bubbles. It was carried out at the time of material science and achieved rapid homopolymerization. ^ 4 The scope of the patent application, which was passed in the second paragraph, 孔 氕 氕 氕 氕: a generation device, in which I: control the micro gas nuclei in the fluid emulsion metal head. 4 Μ bubble generation element can be micro-polymer, such as the scope of patent application? g member. 4 The bubble generating element can be a micro polymer :: Please ask the patent scope for the first item, only the pressure pump: 枓? The generation method, wherein: 丨: control the micro gas nuclei in the fluid ^ or the compressive gas reservoir. The source of the μ backpressure gas is ^ such as _ 凊 Patent Fan in; 13 The method of protecting 2 materials, repeating the second description of the source of high pressure gas that can control the micro gas nuclei in the fluid micro bubble generating element, that is, Action: Two materials and micro-bubbles are generated = output or interval output, 7.:=: A :: mixing or continuous mixing of materials to generate a micro-bubble to control the micro-gas nuclei under the fluid : Object: The micro-bubble generating element can provide the nucleus. Mouth material can produce poly-J material material below 35 microns] Brother 2: The controllable micro-gas nucleus and metal elements can be made in two horizontal planes-a gas-generating element can be made ----- ----- Lost the official way, and the conveying screw Page 16 1233877 _ ^ No. 931Πί! Ϊ́3 / | VI. The patent application scope of the gas wheel has several vent holes located in each vent with no 9. Polymer The rear of the hollow gold is opened, and the transparent micro 10-body polymer bubble is fixed to the strip height. The polymer required for the polymer 11-body polymerization is required to obtain the regular micro. For example, the element of the application material is provided with a hole in the air hole. • If the material of the application material is inside the material tube, it will form a green component material tool. • If the material size of the application material requires a micro-feed tube, the penetrating hole in the mouth. The patented fan formation device 'makes the inner tube L' and the core metal is fixed with a patented generation edge. The edge is set so that there is no gas between the air bubbles. The patented generated microporous gas nucleus is the gas of the solid metal element. A transmission block is connected to a ventilation block of the hole, and the micro-controllable micro gas nucleus in the fluid 'micro-bubble generating element can be made into an air chamber, and a plurality of ventilation blocks are penetrated through the gas transmission edge in the hollow screw, and the The micropores are ventilated, and the microporous second item is fixed in the pores, and the middle part forms a second device with the surrounding microporous ventilation range of the wheel element. A shunt ring is formed by a polymer material outside the shunt ring. Gas nucleus covers the 2nd device whose size is breathable metal. In the item described above, the use of its peripheral edge and the tube channel, bubble polymer micro gas nuclei. In the item described above, the micro gas head or micro hole correction control micro gas is provided in the extruder with an axial inner edge The effect of the material channel of the shunt ring is to control the micro-bubble generating element ceramics to pass through the periphery, and to connect the holes to the metal elements of the hole ventilation block. The axially convex inner edge of the parallel and the micro, so that plastic nuclei can be used for the flow parts of the same material. Page 17