TWM591039U - Foaming processing system of elastic polymer using supercritical fluid as foaming agent - Google Patents
Foaming processing system of elastic polymer using supercritical fluid as foaming agent Download PDFInfo
- Publication number
- TWM591039U TWM591039U TW108208975U TW108208975U TWM591039U TW M591039 U TWM591039 U TW M591039U TW 108208975 U TW108208975 U TW 108208975U TW 108208975 U TW108208975 U TW 108208975U TW M591039 U TWM591039 U TW M591039U
- Authority
- TW
- Taiwan
- Prior art keywords
- mixture
- foaming agent
- foaming
- supercritical fluid
- mold
- Prior art date
Links
Images
Abstract
本創作所提供以超臨界流體作為發泡劑之彈性聚合物的發泡加工系統，其係以超臨界流體作為物理發泡劑，與已於一熔化單元中受熱熔化之高分子原料熔流流體經混合為單相之混合物後，再將該混合物在間隔有時間差之不同時間點上分別供給到至少二不同模站之模具模室空間中，使該混合物在不同模具中經發泡後被分別模製成型為具彈性之聚合物發泡體。 This creation provides a foaming processing system for elastic polymers that uses supercritical fluid as a blowing agent. It uses supercritical fluid as a physical blowing agent and melts fluids from polymer materials that have been melted by heat in a melting unit. After being mixed into a single-phase mixture, the mixture is supplied to the mold chamber space of at least two different mold stations at different time points with a time difference, so that the mixture is separately foamed in different molds. Molded into an elastic polymer foam.
Description
本創作係與高分子加工技術有關，特別是關於一種以超臨界流體作為發泡劑之彈性聚合物的發泡加工系統。This creation is related to polymer processing technology, in particular to a foaming processing system for elastic polymers using supercritical fluid as a blowing agent.
在習知以超臨界流體作為物理發泡劑所進行的發泡成型加工技術中，是在擠筒內的高分子原料經熱能熔融並行經至螺桿混合段時，將外部之超臨界流體導入擠筒中來與熔融的高分子原料混合為單相溶液，再將該單相溶液供給至對應的模具模室中，以進行模製成型的加工程序。In the conventional foam molding technology using supercritical fluid as a physical foaming agent, the external supercritical fluid is introduced into the extruder when the polymer material in the extrusion cylinder is melted by heat and passed to the screw mixing section The molten polymer raw material is mixed into a single-phase solution in a cylinder, and then the single-phase solution is supplied to a corresponding mold mold chamber to perform a molding process.
應用此種發泡成型技術之系統，係以單一擠筒供給單相溶液，並以單一模站內之模具模室空間來接收單相溶液，而單一擠筒與單一模站之相對位置則為固定，在此基礎上，當擠筒完成本次程序的原料供給後，必須等待模站完成模製成型並取出成品後，始能再進行下次程序的原料供給，而在等待的過程中，擠筒內之原料與發泡劑之混合物，除易因熱產生裂解外，為維持混合物之單相狀態，也必需持續地控制擠筒內部之壓力，避免成核作用的過早發生，致影響後續之成型品質。The system using this foam molding technology supplies a single-phase solution with a single squeeze cylinder, and receives the single-phase solution with the mold cavity space within a single mold station, and the relative position of the single squeeze cylinder with a single mold station is fixed On this basis, after the squeeze barrel completes the supply of raw materials for this procedure, it must wait for the mold station to complete the molding and take out the finished product before it can start the supply of raw materials for the next procedure. During the waiting process, The mixture of raw materials and foaming agent in the extruder, in addition to being prone to cracking due to heat, in order to maintain the single-phase state of the mixture, the pressure inside the extruder must also be continuously controlled to avoid premature nucleation, which may affect Subsequent molding quality.
本創作之主要目的係在提供一種以超臨界流體作為發泡劑之彈性聚合物的發泡加工方法，其係使高分子原料熔流流體與超臨界流體在混合成為單相之混合物後，可以在較短之時間被製造成彈性聚合物之發泡體，以避免高分子原料在單相之狀態停留過長時間，而有過度受熱致生裂解之虞。The main purpose of this creation is to provide a method for foaming elastic polymers using supercritical fluid as a foaming agent, which is to mix the polymer raw material melt fluid and the supercritical fluid into a single-phase mixture. It is made into a foam of an elastic polymer in a relatively short time to avoid the polymer material staying in the single-phase state for too long, which may cause excessive heat to cause cracking.
緣是，為達成上述目的，本創作所提供以超臨界流體作為發泡劑之彈性聚合物的發泡加工方法，其係以超臨界流體作為物理發泡劑，與已於一熔化單元中受熱熔化之高分子原料熔流流體經混合為單相之混合物後，再將該混合物在間隔有時間差之不同時間點上分別供給到至少二不同模站之模具模室空間中，使該混合物在不同模具中經發泡後被分別模製成型為具彈性之聚合物發泡體。The reason is that in order to achieve the above purpose, the method for foaming elastic polymers using supercritical fluid as a blowing agent is provided by the author, which uses supercritical fluid as a physical blowing agent and has been heated in a melting unit After the molten polymer raw material melt fluid is mixed into a single-phase mixture, the mixture is supplied to the mold chamber space of at least two different mold stations at different time points separated by a time difference, so that the mixture is different. After being foamed in the mold, they are respectively molded into elastic polymer foams.
而藉由縮短該間隔時間差之長度，使之短於該混合物在模具中經發泡受模製成型之成型時間長度，即可縮短該混合物閒置未用的時間，以有效地改進習知技術之不足。By shortening the length of the interval time to be shorter than the length of time the mixture is foamed and molded in the mold, the idle and unused time of the mixture can be shortened to effectively improve the conventional technology Inadequate.
同時，因應不同模站之模具模室空間的容積大小改變，可以透過程式化的控制，來改變供給至不同模站中的混合物之量，例如在前一模站中供給一個相對多量的單相混合物，在後一模站中則供給一相對少量的單相混合物，或者對前、後模站都供給相同量的單相混合物等，均為本創作在實施時可因應實際製造條件的改變加以調整變化。At the same time, in response to the change in the volume of the mold chamber space of different mold stations, the amount of mixture supplied to different mold stations can be changed through programmatic control, for example, a relatively large amount of single phase is supplied in the previous mold station Mixture, supply a relatively small amount of single-phase mixture in the latter mold station, or supply the same amount of single-phase mixture to the front and rear mold stations, etc. Adjust changes.
本創作之另一目的則係在提供一種以超臨界流體作為發泡劑之彈性聚合物的發泡加工系統，其係將上述之加工方法以加工裝置來實施，而包含了有一熔化單元、一發泡劑供給單元、至少二模站與一輸出單元。Another objective of this creation is to provide a foaming processing system for elastic polymers using supercritical fluid as a blowing agent. It implements the above processing method with a processing device, and includes a melting unit, a A blowing agent supply unit, at least two mold stations and an output unit.
其中，該熔化單元係提供一封閉之加工空間，以對位於該加工空間中的固態高分子原料提供熱能使之熔化成為可流動之高分子原料熔流流體。Wherein, the melting unit provides a closed processing space to provide thermal energy to the solid polymer material located in the processing space to melt it into a flowable melt flow of polymer material.
該發泡劑供給單元則係連接該熔化單元，並於該加工空間與一發泡劑供給源間形成一可控制開啟及關閉的供給通道，將作為物理發泡劑之超臨界流體自該發泡劑供給源經由該供給通道受控制地導入該加工空間中，而與該高分子原料熔流流體混合為混合物。The foaming agent supply unit is connected to the melting unit and forms a controllable opening and closing supply channel between the processing space and a foaming agent supply source. The foaming agent supply source is controlledly introduced into the processing space via the supply channel, and is mixed with the polymer raw material melt flow fluid into a mixture.
各該模站係分別具有一模具。Each mold station has a mold.
該輸出單元，係以間隔有一時間差之長度，在不同之時間點上將該混合物分別輸出至各該模站之模具中，使該混合物在不同模具中經發泡後被分別模製成型為具彈性之聚合物發泡體。The output unit is separated by a length of time difference, and the mixture is output to the molds of the molding stations at different time points, so that the mixture is foamed in different molds and then separately molded into Flexible polymer foam.
而其中，對高分子原料熔流流體與發泡劑進行混合之單元，除可如上述於該熔化單元中進行外，亦得以一獨立之混合單元來接收來自該熔化單元之高分子原料熔流流體，並使該發泡劑供給單元將該超臨界流體導入該混合單元中，來與該高分子原料熔流流體進行混合。Among them, the unit for mixing the polymer material melt flow fluid and the blowing agent can be carried out in the melting unit as described above, and an independent mixing unit can also receive the polymer material melt flow from the melting unit A fluid and causing the blowing agent supply unit to introduce the supercritical fluid into the mixing unit to mix with the polymer raw material melt flow fluid.
請參閱圖1所示，在本創作第一較佳實施例中所提供的以超臨界流體作為發泡劑之彈性聚合物的發泡加工系統，其係包含了一裝置(10)與一加工方法，而該裝置(10)則包含了有一熔化單元(20)、一發泡劑供給單元(30)、一輸出單元(40)以及多數的模站(50)。Please refer to FIG. 1, the foaming processing system of an elastic polymer using supercritical fluid as a foaming agent provided in the first preferred embodiment of the present invention includes a device (10) and a processing Method, and the device (10) includes a melting unit (20), a blowing agent supply unit (30), an output unit (40) and a majority of mold stations (50).
如圖2所示，該熔化單元(20)係具有一直管狀的擠筒(21)，一螺桿(22)係可自轉地同軸穿伸在該擠筒(21)中，一加工空間(23)係介於該螺桿(22)之桿身周側與該擠筒(21)之內側管面之間。As shown in FIG. 2, the melting unit (20) has an extruded barrel (21) that is always tubular, a screw (22) is rotatable coaxially extending through the extruded barrel (21), and a processing space (23) It is between the peripheral side of the shaft of the screw (22) and the inner tube surface of the squeeze barrel (21).
如圖2所示，該發泡劑供給單元(30)係固設於該熔化單元(20)之擠筒(21)管身之中段部位上，具有一供給通道(31)，係於該加工空間(23)與外部之發泡劑供給源間形成可供流體流動之通道，一控制閥(32)係用以控制該供給通道(31)之暢通及阻閉，以控制流體自該供給通道(31)進入該加工空間(23)之量。As shown in FIG. 2, the foaming agent supply unit (30) is fixed on the middle part of the extruding cylinder (21) body of the melting unit (20), and has a supply channel (31), which is used in the processing A channel for fluid flow is formed between the space (23) and the external blowing agent supply source, and a control valve (32) is used to control the unblocking and blocking of the supply channel (31) to control the fluid from the supply channel (31) The amount entering the processing space (23).
如圖2所示，該輸出單元(40)係設於該擠筒(21)之管軸一端上，連通該擠筒(21)之管內空間與外部。As shown in FIG. 2, the output unit (40) is provided on one end of the tube axis of the squeeze tube (21), and communicates with the space inside the tube and the outside of the squeeze tube (21).
如圖1所示，該些模站(50)係沿彼此依序地排列呈直線狀，並位於該輸出單元(40)遠離該擠筒(21)之一側，惟其排列並不以直線為限，亦可為以該熔化單元為中心地排列呈環狀、或設置在圓盤上等已知之模站設置技術，而各該模站(50)則分別具有用以進行聚合物模製成成型加工之模具，模具之數量則隨所擬製成之物品而定，得以為單一、亦可為複數或多數者。As shown in FIG. 1, the mold stations (50) are arranged linearly along each other in sequence, and are located on the side of the output unit (40) away from the squeeze cylinder (21), but their arrangement is not based on a straight line It can also be a known molding station installation technique such as arranging in a ring centered on the melting unit or being installed on a disc, etc., and each of the molding stations (50) has its own for polymer molding. The number of molds to be processed depends on the article to be made, and can be single, plural or plural.
藉由上述構件，該裝置(10)於本實施例中係用供實施該加工方法，其具體所進行之程序乃可如次所陳者：With the above components, the device (10) is used to implement the processing method in this embodiment, and the specific procedures can be performed as follows:
A.熔化固態之高分子原料A. Melted solid polymer materials
如圖2所示，特定組成的外部高分子原料經由料斗(24)進入該加工空間(23)後，藉由該螺桿(22)轉動所施加之剪力以及由該擠筒導入之外部熱能，係使固態之高分子原料在該加工空間(23)中被熔化成為可流動之熔融態。As shown in FIG. 2, after the external polymer raw material with a specific composition enters the processing space (23) through the hopper (24), the shearing force applied by the rotation of the screw (22) and the external heat energy introduced by the extrusion cylinder, The solid polymer raw material is melted into a flowable molten state in the processing space (23).
B.導入物理發泡劑B. Introduce physical blowing agent
將作為物理發泡劑而由該供給源所提供處於超臨界狀態之惰性氣體或二氧化碳等流體，在該控制閥(32)之控制下，將所需之超臨界流體之量導入該加工空間(23)中，並在該螺桿(22)之持續轉動下，與已熔化之高分子原料熔流流體混合成為混合物。The supercritical fluid such as inert gas or carbon dioxide provided by the supply source as a physical blowing agent is introduced into the processing space under the control of the control valve (32) ( In 23), under the continuous rotation of the screw (22), it is mixed with the melted fluid of the melted polymer raw material to form a mixture.
C.積聚混合物C. Accumulated mixture
前步驟中之混合物，持續地往該螺桿(22)之下游流動，積聚在該螺桿(22)自由端末的擠筒(21)管內空間中，並受該輸出單元(40)之止擋(圖中未示其止擋構造)而累積存在於該擠筒(21)內，而使該螺桿(22)後退。The mixture in the previous step continuously flows downstream of the screw (22), accumulates in the space inside the tube of the squeeze barrel (21) at the free end of the screw (22), and is stopped by the output unit (40) ( The stop structure is not shown in the figure) and accumulated in the squeeze barrel (21), so that the screw (22) is retracted.
D.分站射出D. Shoot out
依據各該模站(50)不同模具的模室成型物品所需之量，將對應量的混合物，經由該輸出單元(40)射出對應模具之中，例如，將第一量的混合物射出第一模站(501)之模具後，隨即移動該熔化單元(20)至第二模站(502)再將第二量的混合物射入第二模站(502)的模具中，而其中，該第一量與該第二量係可為相同，亦可為不同，端視模具進行成型時所需之量而定。According to the quantity required for molding articles in different mold chambers of each mold station (50), the corresponding amount of mixture is injected into the corresponding mold through the output unit (40), for example, the first amount of mixture is injected out of the first After the mold of the mold station (501), the melting unit (20) is moved to the second mold station (502) and the second amount of the mixture is injected into the mold of the second mold station (502). The first quantity and the second quantity may be the same or different, depending on the quantity required when the mold is molded.
透過上述之方法，在對前一模具完成射料，再進行位移並與次一模具對位後，即可隨之進行次一模具的射料作業，而相鄰兩次的射料時間點間的時間差長度，一般而言係短於模具在接受混合物到完成模製成型的成型時間，縱然是在前後兩次射出的量並不相同、或者不同模站的成型時間不同的情況，亦是如此，如此一來，積存在該擠筒(21)中的混合物，即可在短時間內被射出進行發泡模製之成型，而可避免衍生如習知技術使混合物在擠筒內積存過久使原料產生裂解之情況。Through the above method, after the previous mold is shot, and then displaced and aligned with the next mold, the shot operation of the next mold can be carried out, and between two adjacent shot time points The length of the time difference is generally shorter than the molding time of the mold from receiving the mixture to completing the molding, even if the amount of injections before and after the two injections are not the same, or the molding time of different molding stations is different. In this way, the mixture stored in the squeeze barrel (21) can be injected in a short time for foam molding, and can avoid the derivation of the mixture in the squeeze barrel by conventional techniques. Long-term cracking of raw materials.
再請參閱圖3及圖4所示，在本創作第二較佳實施例中所提供以超臨界流體作為發泡劑之彈性聚合物的發泡加工系統，其主要之技術特徵係與前述第一較佳實施例所揭者相同，特别是在方法上係為一致，所不同者係在於裝置中用以形成混合物之技術有所差別。Please refer to FIGS. 3 and 4 again. In the second preferred embodiment of the present invention, a foaming processing system of an elastic polymer using a supercritical fluid as a foaming agent is provided. The main technical features are the same as those described above. The disclosure of a preferred embodiment is the same, especially the method is the same, the difference is that the technology used to form the mixture in the device is different.
不同於第一較佳實施例在高分子原料熔流流體形成後，隨即擠筒中將作為物理發泡劑之超臨界流體與之混合，在第二較佳實施例所提供之裝置(10’)中，則係更包含有一介於該熔化單元(20’)與該輸出單元(40’)之間的混合單元(60’)，並使該發泡劑供給單元(30’)設於該混合單元(60’)上。Different from the first preferred embodiment, the supercritical fluid as a physical blowing agent is mixed with the supercritical fluid in the squeeze tube immediately after the molten polymer fluid is formed. The device (10') provided in the second preferred embodiment , It further includes a mixing unit (60') between the melting unit (20') and the output unit (40'), and the blowing agent supply unit (30') is provided in the mixing Unit (60').
該混合單元(60’)係具有一同軸固接於擠筒(21’)管軸一端之管狀身部(61’)，並以該身部(61’)之管內空間定義出一混合空間(62’)，使該混合空間(62’)與該擠筒(21’)之管內空間連通，而該發泡劑供給單元(30’)之供給通道則係與該混合空間(62’)連通，藉此，高分子原料經由該熔化單元(20’)熔化成為高分子原料熔流流體後，即可由該熔化單元(20’)持續地進行押出而進入該混合空間(62’)中，再於該混合空間(62’)中與作為物理發泡劑之超臨界流體混合成為混合物。The mixing unit (60') has a tubular body (61') coaxially fixed to one end of the tube axis of the extrusion barrel (21'), and a mixing space is defined by the space in the body (61') (62'), making the mixing space (62') communicate with the inner space of the squeeze tube (21'), and the supply channel of the blowing agent supply unit (30') is in contact with the mixing space (62' ) Through which the polymer material is melted into the polymer material melt fluid through the melting unit (20'), and can be continuously extruded from the melting unit (20') into the mixing space (62') In this mixing space (62'), it is mixed with supercritical fluid as a physical blowing agent to form a mixture.
而為了使混合物之混合均勻，係可於該混合單元(60’)中以混練螺桿(63’)對之進行混合，使之達到最佳的混合狀態後，再將之直接經由輸出單元(40’)以押出方式進行輸出，或再經由一計量射出單元(70’)進行計量後經由輸出單元(40’)以射出方式進行輸出。In order to make the mixing of the mixture uniform, it can be mixed in the mixing unit (60') with a mixing screw (63') to achieve the best mixing state, and then directly through the output unit (40 ') The output is performed by means of extrusion, or it is measured by a metering and injection unit (70') and then output by means of an output unit (40').
(10)(10’)裝置 (20)(20’)熔化單元 (21)(21’)擠筒 (22)螺桿 (23)加工空間 (24)料斗 (30)(30’)發泡劑供給單元 (31)供給通道 (32)控制閥 (40)(40’)輸出單元 (50)模站 (501)第一模站 (502)第二模站 (60’)混合單元 (61’)身部 (62’)混合空間 (70’)計量射出單元 (10)(10’) Device: (20) (20’) Melting unit (21)(21’) Squeeze tube (22) Screw screw (22) Screw (23) Processing space (24) Hopper (30) (30’) foaming agent supply unit (31) supply channel (32) Control valve (40) (40’) output unit (50) mold station (501) The first mold station (502) The second mold station (502) Hybrid unit (60’) (61’)Body (62’) Mixed space (70’) Metering and injection unit (70’)
圖1係本創作第一較佳實施例之裝置平面示意圖。 圖2係本創作第一較佳實施例之局部剖視圖。 圖3係本創作第二較佳實施例之裝置平面示意圖。 圖4係本創作第二較佳實施例之局部剖視圖。 FIG. 1 is a schematic plan view of the device of the first preferred embodiment of the present creation. 2 is a partial cross-sectional view of the first preferred embodiment of the present creation. FIG. 3 is a schematic plan view of the device of the second preferred embodiment of the present creation. 4 is a partial cross-sectional view of the second preferred embodiment of the present creation.
(10)‧‧‧裝置 (10)‧‧‧device
(20)‧‧‧熔化單元 (20)‧‧‧melting unit
(40)‧‧‧輸出單元 (40)‧‧‧Output unit
(50)‧‧‧模站 (50)‧‧‧mold station
(501)‧‧‧第一模站 (501)‧‧‧ First Mold Station
(502)‧‧‧第二模站 (502)‧‧‧ Second Mold Station
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108208975U TWM591039U (en) | 2019-07-09 | 2019-07-09 | Foaming processing system of elastic polymer using supercritical fluid as foaming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108208975U TWM591039U (en) | 2019-07-09 | 2019-07-09 | Foaming processing system of elastic polymer using supercritical fluid as foaming agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM591039U true TWM591039U (en) | 2020-02-21 |
Family
ID=70414244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW108208975U TWM591039U (en) | 2019-07-09 | 2019-07-09 | Foaming processing system of elastic polymer using supercritical fluid as foaming agent |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWM591039U (en) |
-
2019
- 2019-07-09 TW TW108208975U patent/TWM591039U/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4155969A (en) | Method for injection foam molding | |
| JPH066308B2 (en) | Injection molding method for molded articles made of thermoplastic synthetic resin and apparatus for carrying out the method | |
| RU2007131935A (en) | METHOD FOR PRODUCING FORMING MASS | |
| JP2005532939A5 (en) | ||
| US20110001267A1 (en) | Machine for injecting a heat curable material, in particular for rubber vulcanisation, and corresponding method for achieving same | |
| JP4410317B2 (en) | Method and apparatus for manufacturing synthetic resin injection molded product | |
| TWM607840U (en) | Injection molding system | |
| JPH10235700A (en) | Injection machine and injection method | |
| US20030085483A1 (en) | Apparatus and method for making molded foam articles | |
| JP3716904B2 (en) | Foam molding method and molding apparatus | |
| JP4515694B2 (en) | Foam injection molding method | |
| TWM591039U (en) | Foaming processing system of elastic polymer using supercritical fluid as foaming agent | |
| CN210477573U (en) | Foaming processing system of elastic polymer using supercritical fluid as foaming agent | |
| JP4726298B2 (en) | Molded polymer material including injection molded microporous low density polymer material | |
| JPH11320630A (en) | Method and apparatus for injecting plastic material | |
| TW202136017A (en) | Molding method for operating molding device | |
| JP2003231148A (en) | Molding method for thermoplastic resin foam | |
| CN109760333A (en) | Extrusion foaming device screw rod and extrusion foaming device | |
| JP2001162649A (en) | Method and apparatus for manufacturing sandwich foam | |
| JPH09164547A (en) | Method and apparatus for gas support injection molding | |
| KR101860909B1 (en) | Foam molding apparatus and method for an injection molding | |
| CN112208046A (en) | Foaming processing method and system for elastic polymer by using supercritical fluid as foaming agent | |
| JP2008068606A (en) | Molding method of synthetic resin molded article and molding apparatus | |
| US11433578B2 (en) | Mixing device for producing a plastic melt loaded with a propellant | |
| TWI819377B (en) | Molding method |