JP2005193670A - The formation method which enables the control of fine open cell core in fluid polymer material, and its apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate an unstable situation which occasionally occurs in the core formation method of conventional polymer materials where it is difficult to separate a member which does not accomplish cores from a member which accomplishes cores after fluid polymer material which is heat-melted within material pipe is impregnated into a former, further, where it is also quite difficult to control a proportional of a foaming agent and a connection of a non formation core zone to need. <P>SOLUTION: In this invention, a polymer material 13 in a material pipe is melted by a heater 12 being attached so that it surrounds the outside of a transportation screw 14, further, whether a high-pressure gas delivery operation of a pressurization pump or a high-pressure gas conservation cylinder is performed, is controlled and forming bubble nuclei or non-bubble nuclei in a fluid cylindrical polymer material zone is controlled by the set-up of a gas transport pipe 16 in the transportation screw 14 and its connection with a fine bubble generating part 18 at a tip of the transportation screw 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a production method and apparatus capable of controlling microbubble nuclei in a fluid polymer material. Specifically, the production method and apparatus capable of controlling microbubble nuclei in the fluid polymer material of the present invention has a heater attached so as to wrap outside the transport screw, so as to solubilize the polymer material in the material pipe. In addition, a pressure pump is provided by providing a gas transport pipe in the transport screw and connecting it to the micro-bubble generating parts (example: micro-hole ventilation metal head / micro-hole ceramic head) at the tip of the transport screw. Alternatively, it is a technique capable of controlling the formation of bubble nuclei or bubble-free nuclei in the fluid polymer material area to be molded by controlling whether or not the high-pressure gas delivery operation of the high-pressure gas storage cylinder is performed.

  In general, a polymer material used in an injection or extrusion molding machine is dissolved in a fluid, and then a physical foaming agent is injected into the polymer material and stirred to make the polymer into a mixture including a foaming unit cell. Furthermore, the mixture is injected into a forming die and solidified, thereby lowering the pressure in the mixture and growing unit cells in the polymer.

However, the polymer material undergoes a chemical reaction and becomes a foaming agent that forms a gas. Usually, an organic compound is used, and its characteristics are that it decomposes at a critical temperature and releases a gas such as nitrogen, carbon dioxide, carbon monoxide, etc., and has the effect of generating bubble nuclei in the fluid polymer. For this reason, as an application of this technique, there is "injection molding of microporous material" shown in Patent Document 1, which is an existing patent that forms a nucleus in a fluid polymer. This invention is applied to an injection molding machine or an extruder and uses a polymer material as a raw material. The fluid polymer material is injected into a gas or liquid blowing agent by a transfer screw, and the blowing agent is injected into the transfer screw mixing zone and stirred and mixed with the fluid polymer material. The pressure is then reduced from the accumulation chamber to the nucleator passage to rapidly nucleate the fluid polymer material. As the blowing agent, carbon dioxide gas or liquid is used. The blowing agent first enters the screw and is mixed, and then the blowing agent and the fluid polymer material are stirred by the screw to form a mixture. In addition, this polymeric material is fed through a nozzle into a molding die to create nuclei.
Taiwan Patent No. 87104336

  1. Conventional polymer material nucleation methods do not allow the resulting polymer material nucleation to have a microbubble size of 35 microns or less in a gas, liquid or solid blowing agent. Thus, although the air bubbles formed are not average and are possible when a micron foam material needs to be used, the price of the micron foam material becomes very expensive and expensive and unprofitable.

  2. The blowing agent inlet is outside the material pipe and is connected to the stirring area of the transport screw and is injected at a fixed point. In addition, the blowing agent is agitated and mixed with the fluid polymer material in the material pipe through the transport screw. However, since the blowing agent is on the surface of the dissolved polymer material before the fluid polymer material is agitated and then agitated, bubbles are likely to flow away and an imbalance is likely to occur. Furthermore, the method of stirring the foaming agent and the polymer material has a long foaming time and a low speed. Correspondingly, the cost increases accordingly.

  3. The fluid polymer material heat-solubilized in the material pipe is difficult to separate a portion that does not form a nucleus and a portion that forms a nucleus after being injected into the molding machine. In addition, it is quite difficult to control the proportion of blowing agent required and the connection of the non-generated nuclei area, often resulting in an unstable situation.

  4). It is necessary to attach a valve to prevent the polymer material from flowing backward at the blowing agent inlet. However, this apparatus is expensive and is prone to failure.

  In order to solve the above problems, the invention according to claim 1 utilizes the fact that gas is a foaming agent in injection or extrusion molding, and the gas can be expanded with oxygen dioxide, nitrogen or other. A method of forming microbubble nuclei in a polymer material with a possible gas and forming the bubble nuclei comprises: a. Utilizing the high pressure gas passing through a gas transport tube inside the transport screw and the heater on the outer edge of the material pipe indirectly heating the high pressure gas, b. The heated hot gas enters the microbubble generating part at the tip of the transport screw, and the gas is uniformly discharged from the irregular micropores distributed from the inside to the outside; c. The microbubbles in that area and the polymer material are agitated and pumped out by the transport screw to form a uniform microbubble polymer material, thereby uniformly forming the microbubble core polymer material. This is a production method capable of controlling microbubble nuclei in a fluid polymer material.

  The invention of claim 2 attaches a heater to the outer edge of the material pipe of the injection or extruder, attaches a transport screw in the material pipe, heats and melts the polymer material, and sends it to the transport screw. The gas transport pipe is inside the transport screw, and its inlet is connected to the pressurization pump or high-pressure gas storage cylinder, and the microbubble generation parts are composed of micro holes irregularly connected to each other from the inside to the outside. In addition, since the gas transport pipe enters the inside of the microbubble generation part, the microbubbles are discharged from the inside to the outside through the microholes irregularly distributed in the microbubble generation part, thereby preventing the backflow. A fluid polymer material that can rapidly and uniformly mix the fine bubbles by simultaneously generating, stirring, and feeding the polymer material. A generator capable of controlling the microbubble nuclei in.

  The invention described in claim 3 is the generating device capable of controlling the microbubble nuclei in the fluid polymer material according to claim 2, wherein the microbubble generating part is a microporous metal head.

  According to a fourth aspect of the present invention, in the fluid polymer material according to the second aspect of the present invention, the microbubble nuclei can be controlled in the fluid polymer material.

  According to a fifth aspect of the present invention, there is provided a production method capable of controlling microbubble nuclei in the fluid polymer material according to the first aspect, wherein the source of the high-pressure gas is a pressure pump or a high-pressure gas storage cylinder.

  According to the sixth aspect of the present invention, the control of the high pressure gas transport source can control whether the microbubbles of the microbubble generating part are continuously released or intermittently released, and the interval between the fluid polymer material and the microbubble generating section can be controlled. A production method capable of controlling microbubble nuclei in a fluid polymer material according to claim 1 which can be provided for injection or molding of an extruder by being able to be mixed or continuously mixed.

  The invention according to claim 7 is characterized in that since the microbubble generating part can supply microbubbles of 35 microns or less, the polymer material can generate the microbubble nuclei of 35 microns or less. The production | generation apparatus which can control a microbubble nucleus in the fluid polymer material of Claim 2.

  The invention according to claim 8 is characterized in that the microbubble generating part is made of a solid metal part, a gas transport passage passes through the lateral center thereof, is connected to the gas transport pipe in the transport screw, and further, the periphery of the solid metal part There are several ventilation holes, the ventilation holes are connected to the gas transport passage, and there are minute ventilation holes inside the openings of the ventilation holes. It is a production | generation apparatus which can control a microbubble nucleus in the fluid polymer material of Claim 2 which has.

  The invention according to claim 9 is characterized in that the microbubble generating part is made of a non-solid part, an air room is formed therein, a hole is opened behind the non-solid metal part, and the inside of the transport screw is It is connected to the gas transport pipe, and there are several ventilation holes around the non-solid metal parts, and there are minute ventilation holes inside the mouth of each ventilation hole, and these ventilation holes are irregular. It is a production | generation apparatus which can control a microbubble nucleus in the fluid polymer material of Claim 2 which has a simple micropore.

  In the invention according to claim 10, there is a flow dividing ring at the outer edge of the fine bubble generating part of the extruder, and there is an axial projection around the periphery, which is fixed inside the material pipe, and the outer edge of the flow dividing ring and the pipe The height between the axial projections in the inside forms a bubble-free polymer material passage, and further, a polymer cell passage is formed between the inner edge of the diverting ring and the micro-bubble generating part. 3. The generating device capable of controlling microbubble nuclei in the fluid polymer material according to claim 2, wherein the material is non-bubble nuclei enveloping the microbubble nuclei.

  According to the eleventh aspect of the present invention, since it is possible to select the same material as that of the fine hole ventilation metal head or the fine hole ceramic head having the size of the fine hole required by the fine bubble generating part, the required fine value is obtained. 3. The generating device capable of controlling microbubble nuclei in the fluid polymer material according to claim 2, wherein the size of the bubble nuclei is obtained.

  The present invention provides a variety of mediator gases that can form microbubbles in a fluid polymer material, and after the polymer material has been molded, form microbubble nuclei, and further directly mix microbubbles within the polymer material. In the molding, microbubble nuclei are uniformly generated inside the mixture, and by selecting the microhole size of the microbubble generating part (for example, a microhole ventilation metal head / microhole ceramic head is preferable), By providing size and controlling the delivery of microbubbles at the same time, different mixing is possible in different areas, can meet the conditions required for molding different polymer materials, speedily and uniformly nucleate The quality can be improved, the structure is simple, and the cost can be kept low.

  In the present invention, a fine bubble generating part (for example, a fine hole ventilation metal head or a fine hole ceramic head is preferable) is attached to a transport screw, and its gas transport pipe is provided inside the transport screw. By connecting, gas is sent to a pressure pump or high-pressure gas storage cylinder, and the polymer material is melted via a heater attached to the outside of the material pipe, and at the same time, the gas transport pipe is preheated indirectly, Microbubbles are released from microholes randomly distributed from inside to outside by the microbubble generation parts, diffused directly into the fluid polymer material, and simultaneously injected into the molding die by stirring and transmission of the transport screw. Lower to critical temperature and lower pressure. As the polymer material forms microbubble nuclei, the generation, agitation, and delivery of microbubbles proceed simultaneously, and the microbubbles are uniformly dispersed in the polymer material. It is possible to reduce the required size to 35 microns or less depending on the microhole.

  The micro-bubble generating part of the present invention is attached to the tip of the transport screw, and the area to which the micro-bubble is supplied can be supplied intermittently, and nucleation and non-nucleation polymer in a molding die The connection part is clear and easy to control. Furthermore, it is possible for non-nuclear polymer to adhere to the surface of the molding die, and the inside of the non-nucleating polymer material is a polymer material of microbubble nuclei, creating a situation where the surface is glossy and there are no fine holes. It is possible to have a structure with microbubble nuclei inside.

  The microbubble generating part of the present invention has irregular micropores from the inside to the outside, the polymer material does not flow from the microholes, and the transport screw is a high-temperature fluid in which the polymer material is dissolved. It wo n’t get clogged. Since fine bubbles are pushed out at high pressure, there is no need to install a valve to prevent backflow, so that the equipment cost can be saved and the failure rate can be kept low.

Hereinafter, a method for generating microbubble nuclei in a stirring zone of a fluid polymer material of the present invention and a generation apparatus capable of controlling microbubble nuclei in a fluid polymer material will be described using embodiments.
(Embodiment 1)
As shown in FIGS. 1 and 2, in Embodiment 1 of the present invention, the solubilized polymer material 13 is transferred to the transport screw by attaching a heater 12 outside the material pipe 11 in the injection or extruder 1, 1 ′. Fluid polymer material 15 (see FIG. 5) solubilized by 14 agitation is injected. This foaming source can be applied to allow all applicable gases to proceed with the foaming reaction of the polymer material. A gas transport pipe 16 is provided in the transport screw 14, and a screw shaft unit 141 is attached to the rear part and is fixed to the transmission 145. The rear part of the gas transport pipe 16 is blocked by the blind tip 144. In the screw shaft unit 141, there are a ring type air tank 142 and an entrance port 17 connected to the ring type air tank 142. Further, several through holes 143 are opened in the transport screw 14 in the ring type air tank 142, and the through holes 143 are connected to the gas transport pipe 16. Therefore, when the transportation screw 14 rotates due to the connection between the entrance port 17, the ring-type air tank 142, and the through hole 143, the screw shaft unit 141 is not fixed and does not move. There is no hindrance. A pressure pump or a high-pressure gas storage cylinder is attached to the entrance 17 on the outside, and a micro-bubble generating part 18 (for example, a micro-hole ventilation metal head or a micro-hole ceramic head is preferable) is attached to the tip of the transport screw 14. It has been. In the fine bubble generating part 18, fine holes connected to each other from the inside to the outside are distributed. Furthermore, the size of the microhole can be changed by exchanging the microbubble generating part 18 according to the size of the microbubble nucleus to be generated. The fine bubble generating part 18 is connected to the gas transport pipe 16 described above, and the gas transport pipe 16 is connected to the fine bubble generating part 18.

As shown in FIGS. 1 and 5, in the process in which the high-pressure gas of the pressurization pump or the high-pressure gas storage cylinder enters the gas transport pipe 16 through the inlet 17, the heater 12 outside the material pipe 11 is polymerized. By dissolving the material 13, the transport screw 14 is indirectly heated at the same time, and the gas in the gas transport pipe 16 receives heat and is further sent to the micro-bubble generating part 18. The holes are discharged from the inside to the outside. The microbubbles enter directly into the fluid polymer material 15 in the area and are agitated and fused by the transport screw 14, and at the same time, extrude the uniformly mixed microbubble polymer material 15 ′ into the tip injection material storage portion 19, Generation of fine bubbles, agitation, and delivery proceed simultaneously, and the uniformly mixed fine bubble polymer material 15 ′ enters the molding machine 21 (see FIG. 6) through the injection port 20, the pressure decreases, and the temperature increases. When the critical temperature is reached and the polymer material is cured and molded, a method of producing a microbubble core polymer material 15 ″ in which microbubble nuclei are uniformly present in the polymer material can be provided.
In the first embodiment, irregular fine holes are distributed from the inside of the fine bubble generating part 18 to the outside, and the presence of the fine holes on the surface does not cause a reverse flow phenomenon, so that a valve for preventing the reverse flow is unnecessary. In addition, since the failure rate is low, the cost can be reduced.

As shown in FIGS. 5 and 6, the control of the area where the microbubbles form the nucleus is based on whether or not the gas can be transported. With the timing to supply or stop, the fluid polymer material 15 enters the storage portion 19, provides the microbubble fluid polymer material 15 ′ or the microbubble fluid polymer material 15 and enters the molding die 21, By selecting the above-mentioned continuous supply or intermittent supply of microbubbles, the cell-free core polymer material 15 is formed on the surface in the molding die 21, and the microbubble core polymer material 15 '' having microbubble nuclei inside is formed. It is assumed that the whole is a microbubble core polymer material 15 ″ having a microbubble core.
Naturally, the aforementioned fine bubble generating part 18 is connected to an appropriate position of the transport screw 14 so that the fluid polymer material 15 corresponds to the molding volume of the molding die 21.

  The above description can also be seen from FIG. The microbubble polymer material 15 is first injected into the molding die 21, and the microbubble polymer material 15 first adheres to the surface of the molding die 21 due to the characteristics of the polymer material molding, thereby forming a glossy and smooth surface. To do. Further, a fine-bubble polymer material 15 ′ having fine bubbles is subsequently injected into the molding die 21 to form a fine-bubble nucleus polymer material 15 ″ having fine-bubble nuclei. Has the effect of enclosing the microbubble core polymer material 15 ″.

(Embodiment 2)
In the second embodiment of the present invention, as shown in FIG. 3, the aforementioned fine bubble generating part 18 is made of a solid metal part 18 ′ and fixed to the transport screw 14. A gas transport passage 181 ′ passes through the horizontal center of the microbubble generating part 18 and is connected to the gas transport pipe 16 in the transport screw 14. Further, there are several ventilation holes 182 'around the solid metal part 18', and these ventilation holes 182 'communicate with the gas transport passage 181'. And the fine hole ventilation lump 183 'is being fixed inside at the position of the mouth 1821' of each ventilation hole. This fine hole ventilation block 183 ′ is the same as the material of the fine bubble generating part 18 of the first embodiment. The microbubbles enter the gas transport passage 181 ′ from the gas transport pipe 16, and further discharge the microbubbles from the microholes of the microhole vent block 183 ′ through the vent holes 182 ′, respectively. Similar effects can be obtained.

(Embodiment 3)
In the third embodiment of the present invention, as shown in FIG. 4, the fine bubble generating part 18 is made of a non-solid metal part 18 '', and an air room 184 '' is formed therein. Further, a hole 185 '' is opened behind the non-solid metal part 18 '' and is connected to the gas transport pipe 16 in the transport screw 14 described above. Several vent holes 182 '' pass through the periphery of the non-solid metal part 18 ''. Further, a fine hole air mass 183 '' is fixed in the air hole 182 ''. The fine hole vent 183 ″ is the same as the material of the fine bubble generating part 18 of the first embodiment, so that the fine bubbles enter the air room 184 ″ from the gas transport pipe 16, and further each fine hole. Since the microbubbles are released from the microhole of the ventilation block 183 ″, the same effect as in the first embodiment can be obtained.

(Embodiment 4)
In Embodiment 4 of the present invention, as shown in FIGS. 7, 8, and 9, when the polymer material of the extruder is extruded, the extruded polymer material keeps the external bubble-free nuclei, and the surface has a smooth gloss. It has a device that generates bubble nuclei on the inside. That is, there is a diverting ring 22 at the tip of the microbubble generating part 18, and an axial protrusion 221 at the outer edge of the diverting ring 22. However, a bubble-free polymer material passage 222 is formed, and the inner edge of the diverting ring 22 and the micro-bubble generating part 18 form a micro-bubble polymer material passage 223 (a polymer material passage having bubbles).

  As shown in FIGS. 10 and 11, the fluid polymer material 15 is extruded and partly enters from the above-described cell-free polymer material passage 222, and part enters from the micro-bubble polymer material passage 223, so that there is no bubble. The fluid polymer material 15 encloses the microbubble fluid polymer material 15 ′ with bubbles and is simultaneously extruded from the extrusion port 224 to form the cell-free core polymer material 15 on the outside and the polymer material 15 ″ with the microbubble core inside. Therefore, the effect that the polymer material 15 without bubble nuclei wraps the fine bubble nucleus polymer material 15 '' is obtained.

  As described above, the production method and apparatus capable of controlling the microbubble nuclei in the fluid polymer material according to the embodiment of the present invention can be obtained by attaching the heater 12 so as to be wrapped outside the transport screw 14. The polymer material 13 in the pipe is melted, and further, a gas transport pipe 16 is provided in the transport screw 14 and a micro-bubble generating part 18 (for example, a micro-hole ventilation metal head / micro By connecting to a hole ceramic head), it is controlled whether the high-pressure gas delivery operation of the pressurization pump or high-pressure gas storage cylinder is performed, and bubble nuclei or bubble-free nuclei are formed in the fluid cylinder polymer material area to be molded The technology which can control what is done is provided.

It is a sketch shown in the partial cross section of the microbubble generation | occurrence | production part and generator of Embodiment 1 in this invention. It is an enlarged view of the surface fine mouth of the microbubble generation | occurrence | production part of the Embodiment 1. It is sectional drawing of the microbubble generation | occurrence | production part structure of Embodiment 2 in this invention. It is sectional drawing of the microbubble generation | occurrence | production part structure of Embodiment 3 in this invention. It is a cross-sectional schematic diagram of the bubble production | generation of this invention, and the area space | interval transport of a cell-free polymer material. It is sectional drawing which showed the state of what the polymer material of FIG. 5 was inject | poured in the shaping | molding die | dye, and became the nucleus, and what is not the nucleus. It is the cross-sectional schematic diagram which showed the shaping | molding method which produces | generates the bubble nucleus in a polymer material by applying to the extruder of the microbubble generation | occurrence | production part and generator of Embodiment 4 in this invention. It is a perspective view of a diversion ring at the time of applying the embodiment 4 to an extruder. It is a front view of the diversion ring of Embodiment 4. It is a cross-sectional assembly drawing of the flow dividing ring and microbubble generation | occurrence | production part of Embodiment 4. It is sectional drawing which attached the shunt ring to the microbubble generation | occurrence | production part in the extruder of the same Embodiment 4, and showed the separation structure and method of bubble nucleus production | generation and non-bubble nucleus polymer material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1 '... Injection or extrusion machine, 11 ... Material pipe, 12 ... Heater, 13 ... Polymer material, 14 ... Transport screw, 141 ... Screw shaft unit, 142 ... Ring type air tank,
143 ... through hole, 144 ... blind tip, 145 ... transmission,
DESCRIPTION OF SYMBOLS 15 ... Fluid polymer material, 16 ... Gas transport pipe, 17 ... Entrance, 18 ... Microbubble generation part, 15 '... Microbubble polymer material, 19 ... Injection material storage part, 20 ... Injection port, 21 ... Molding machine,
15 ″… Microbubble core polymer material, 18 ′… Solid metal parts,
181 '... gas transport passage, 182' ... vent hole, 1821 '... vent hole mouth,
183 '... Micro-hole ventilation block, 18 "... Non-solid metal parts, 184" ... Air room,
185 '' ... hole, 22 ... shunt ring, 221 ... axial projection,
222 ... Bubble-free polymer material passage, 223 ... Micro-bubble polymer material passage, 224 ... Extrusion port

Claims (11)

In injection or extrusion molding, the gas is a foaming agent, and the gas is oxygen dioxide, nitrogen, or other gas that can be foamed. The method of forming nuclei is
a. Making use of the fact that the high pressure gas passes through the gas transport pipe inside the transport screw and the heater at the outer edge of the material pipe indirectly heats the high pressure gas;
b. The heated high-temperature gas enters the micro-bubble generating part at the tip of the transport screw, and the gas is uniformly discharged from irregular micro holes distributed from the inside to the outside;
c. The microbubbles and polymer material in that area are agitated and pumped out by the transport screw to form a uniform microbubble polymer material, thereby forming the microbubble core polymer material uniformly;
A production method capable of controlling microbubble nuclei in a fluid polymer material comprising: By attaching a heater to the outer edge of the material pipe of the injection or extruder, and attaching a transport screw in the material pipe, the polymer material is heated and melted, and sent to the transport screw.
A gas transport pipe is inside the transport screw, and its inlet is connected to a pressure pump or a high-pressure gas storage cylinder;
The micro-bubble generating parts are composed of micro holes that are irregularly connected to each other from the inside to the outside, and the gas transport pipe enters the inside of the micro-bubble generating parts,
Microbubbles are discharged from the inside of the microholes randomly distributed in the microbubble generating parts to the outside, and it is not necessary to use a valve to prevent backflow, and the generation of the microbubbles, stirring, and delivery of the polymer material are performed simultaneously. A generator capable of controlling microbubble nuclei in a fluid polymer material that is capable of proceeding and mixing the microbubbles quickly and uniformly.   The generating device capable of controlling the microbubble nuclei in the fluid polymer material according to claim 2, wherein the microbubble generating part is a microporous metal head.   The generating device capable of controlling the microbubble nuclei in the fluid polymer material according to claim 2, wherein the microbubble generating part is a microhole ceramic head.   The production method capable of controlling microbubble nuclei in the fluid polymer material according to claim 1, wherein the source of the high-pressure gas is a pressure pump or a high-pressure gas storage cylinder.   Control of the high-pressure gas transport source can control whether the microbubbles in the microbubble generation part are sustained release or intermittent release. Mixing or continuous mixing at intervals in the fluid polymer material and microbubble generation section The production method capable of controlling the microbubble nuclei in the fluid polymer material according to claim 1, which can be provided for injection or molding of an extruder.   The microbubble generation part can supply microbubbles of 35 microns or less, so that a polymer material can generate the microbubble nuclei of 35 microns or less. A generator that can control microbubble nuclei in fluid polymer materials.   The micro-bubble generating part is made of solid metal part, the gas transport passage penetrates the center of the part, and it is connected to the gas transport pipe in the transport screw, and there are several vent holes around the solid metal part. 3. The fluid according to claim 2, wherein the vent hole is connected to the gas transport passage, and there is a minute vent hole inside the mouth of each vent hole, and the minute hole vent has irregular minute holes. A generator that can control microbubble nuclei in polymer materials.   The microbubble generation part is made of a non-solid part, an air room is formed therein, a hole is opened behind the non-solid metal part, and connected to the gas transport pipe in the transport screw, Furthermore, there are several ventilation holes around the non-solid metal part, and there are minute ventilation holes inside the mouth of each ventilation hole, and the ventilation holes have irregular minute holes. A generator capable of controlling microbubble nuclei in the fluid polymer material described in 1.   There is a diverting ring on the outer edge of the microbubble generating part of the extruder, and there is an axial protrusion around it, fixed to the inside of the material pipe, between the outer edge of the diverting ring and the axial protrusion in the pipe The formation of a bubble-free polymer material passage, and further, the formation of a fine-bubble polymer material passage between the inner edge of the flow dividing ring and the fine-bubble generating part makes the polymer material non-bubble nuclei fine. A generator capable of controlling microbubble nuclei in a fluid polymer material according to claim 2 wrapping the nuclei.   By selecting the same material as the fine hole ventilation metal head or fine hole ceramic head of the fine hole size required by the fine bubble generating part, the required fine bubble nucleus size can be obtained. The production | generation apparatus which can control a microbubble nucleus in the fluid polymer material of Claim 2 characterized by these.

Images