CN104772832A - Epoxy resin vacuum stirring speed control system - Google Patents
Epoxy resin vacuum stirring speed control system Download PDFInfo
- Publication number
- CN104772832A CN104772832A CN201510176258.1A CN201510176258A CN104772832A CN 104772832 A CN104772832 A CN 104772832A CN 201510176258 A CN201510176258 A CN 201510176258A CN 104772832 A CN104772832 A CN 104772832A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- temperature
- mixing speed
- master controller
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 30
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 30
- 238000003756 stirring Methods 0.000 title claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 61
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000003698 anagen phase Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 206010063493 Premature ageing Diseases 0.000 description 1
- 208000032038 Premature aging Diseases 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000019580 granularity Nutrition 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to an epoxy resin vacuum stirring speed control system. When the formula of an epoxy resin mixing material or the vacuumizing work condition is changed, the vacuum defoaming effect of the set stirring speed of the mixing material at each specific temperature (viscosity) is detected and the temperature (viscosity) and stirring speed at which the defoaming efficiency is the best are acquired through comparison to match with each other.
Description
(1) technical field:
The present invention relates to epoxide resin vacuum mixing speed control system, for when change mixture of epoxy resins formula or when vacuumizing operating mode, detect the vacuum defoamation effect of its compound mixing speed set under each specified temp (viscosity), the temperature (viscosity) by comparing acquisition with best deaeration efficiency coordinates with mixing speed.
(2) background technology:
It is flexible and various that epoxy resin oxygen material prescription designs, it is made to be used widely in the field such as electric power, electronic apparatus, the particularly mould material of electrical equipment and the Embedding Material of electronic device such as electric power mutual-inductor, transformer, insulator, when epoxy resin is applied to high voltage electrical equipment, require that it has extremely low partial discharge quantity, otherwise premature aging, electric leakage will puncture even accidents caused because partial discharge quantity exceeds standard.Pore in epoxide resin material produces the main reason of shelf depreciation, therefore when poured with epoxy resin, all adopts vacuum pouring deaeration technology to reduce air gap in cast product and bubble as far as possible.
Based on the principle of gas solubility and fluid temperature and pressure correlation in a liquid, applying more in high viscosity liquid de-aeration is the method such as vacuum stirring deaeration and vacuum film deaeration.
Typical technique is that the fillers such as resin, curing agent and silicon emblem powder, mill base are calculated each component weight by proportioning, and preheating 60 DEG C/3 ~ 4h in an oven in advance after weighing, its batch mixing divides firsts and seconds batch mixing.Storage tank A, the heating system of storage tank B and vacuum system is first started in secondary batch mixing.Add the resin after preheating, filler toward storage tank A again, and add the curing agent after preheating, filler in storage tank B, storage tank A whipping temp is set as 55 DEG C, stir 3 ~ 4 hours, storage tank B whipping temp is set as 50 DEG C, stir 3 ~ 4 hours.Then vacuumize stirring to storage tank A, storage tank B, vacuum is all set to 4mbar.After above-mentioned vacuum outgas, after then batch mixing stirring vacuumizes in mixing tank again, batch mixing is imported in pouring can and pour into a mould the demoulding after curing oven heating cure again.
(3) summary of the invention:
Gas is to high-viscosity epoxy resin compound liquid in atmosphere, also there is certain solubility, but bubble size is very little in compound liquid depths, usually exist with microbubble form, the speed that microbubble relies on natural buoyancy to rise is extremely slowly, external force must be relied on to take bubble to liquid level, and therefore comparatively effective deaeration mode adopts the method such as vacuum stirring deaeration and vacuum film deaeration at present.
Due to each composition material of liquid-state epoxy resin compound and the different of proportioning thereof, also may due to epoxy resin, curing agent inherent quality problem, cause the gel time often criticizing compound inconsistent, and the vacuum stirring deaeration process variations of the vacuum deaerator plant performance used and employing thereof is very large, therefore the technological parameter of existing vacuum stirring deaeration arranges and is mostly by rule of thumb or arranges with reference to process similarity, specific aim is poor, its setting value does not rationally change with the manufacturer of prescription of mixed materials or material or working conditions change, affects deaeration effect and product quality.The present invention introduces epoxide resin vacuum mixing speed control system, when change mixture of epoxy resins formula or factory or when vacuumizing operating mode, for redefining technological parameter, in secondary mixing system, storage tank A is an epoxy resin, filler compound degas system, it is characterized in that when changing prescription of mixed materials or vacuumizing operating mode, by the vacuum stirring deaeration effect of the mixing speed set under each specified temp (viscosity) of its compound of Site Detection storage tank A, obtain under each specified temp (viscosity) according to the temperature (viscosity) of deaeration efficiency and mixing speed reasonable coordination by comparing.Thus do not affect the mixing speed setting of producing and revising and running at ordinary times.
In mixture of epoxy resins, the more granularities of the loading of filler its compound viscosity thinner increases more.On the other hand, after bubble rises to nearly liquid level, bubble can not be overflowed at once, but under the effect of pressure reduction, bubble continues to expand, and stays for some time under nearly liquid level, after shaking off liquid level tension force, could overflow or break, its time of staying shortens with the reduction of the viscosity of pressure, batch mixing liquid.
The mixing speed of bubble effusion efficiency and agitator is closely related, when many bubbles being in Different growth phases occur, too high mixing speed will make a part of bubble have little time to grow to break and overflow fully to be brought back again batch mixing liquid depths, too low mixing speed makes bubble take liquid level time lengthening to, and effective inclined heated plate is shortened.Due to different temperature and compound viscosity, make the number of bubbles and the speed of growth difference that are in Different growth phases, therefore mixing speed is selected different, makes the bubble being in different growing stages be transported to liquid level and is changed with the difference of temperature and viscosity by effective conevying efficiency of overflowing.
System utilizes the change of vacuum to reflect bubble effusion efficiency in mixture of epoxy resins, under the design temperature of a certain reflection viscosity B coefficent, by starting vavuum pump, detect vacuum and reach time of higher limit (low pressure limit value) from preset lower limit, be reflected in this mixing speed and lower deaeration efficiency be set and compare the setting for optimizing mixing speed by repeatedly production testing.
Described epoxide resin vacuum mixing speed control system, when the system is operated, first calculates each component weight by resin, filler by proportioning, for subsequent use after carrying out preheating and drying process in advance by former technological requirement in baking oven or hot-blast stove after weighing.Then heating system and the vacuum system of storage tank A is started.Epoxy resin after preheating and drying process is first dropped in storage tank A, drop into again under silicon powder is cooled to top temperature and heat up, the temperature of vacuum stirring can be carried out after its top temperature and epoxy resin melting, such as start staged at 40 DEG C to about 55 DEG C to heat up, first stir and make batch mixing evenly open vavuum pump again in 5 ~ 15 minutes, and vacuum is set within the scope of a bound, such as can be pressed the former process set value of vacuum as low pressure limit value, and get vacuum decline (pressure increase) to this low pressure limit value add 6-15% as higher limit, the pressure signal of its reflection vacuum send master controller process, its working signal opening or closing vavuum pump is sent by master controller.The intensification of master controller controls to adopt staged heating mode, the identical warming room of about each desirable 3-8 DEG C every.The a little higher than mixing tank design temperature of its terminal temperature, requires that intensification power is large, speed is fast and evacuation rate is fast by such as 75 DEG C about-90 DEG C.The mixing speed of agitator adopts successively decreases according to described staged heating mode temperature section at different levels, the i.e. maximum temperature mixing speed that adopts former technique to determine to low lapse of temperature, and through repeatedly production effect contrast, its mixing speed at different levels and the bubble speed of effusion are adapted.During system works, storage tank A first heats up and opens when vacuum pump evacuation makes vacuum reach setting pressure lower limit and reaches relevant temperature section design temperature and closes vavuum pump and valve at top temperature, make to open again after too much bubble is eliminated in several seconds time delay the rising timer that valve and vacuum pump evacuation start vacuum simultaneously when vacuum drops to setting pressure higher limit, make vacuum reach the timing of setting pressure lower limit to terminate to enter next section, , so go round and begin again, sequentially record the rising timer timing time of each vacuum, its rising timer timing time arranges the impact on vacuumizing performance through repeatedly comparision of production reflection mixing speed, the rising timer timing time length of more each vacuum, determine the vacuum stirring deaeration effect of its design temperature point, determine its mixing speed thus mixing speed under obtaining each temperature-viscosity is arranged, then stop heating up after terminal temperature and constant-temperature vacuum stirring deaeration under the desired temperature and activity time thereof of former technological requirement, pour into a mould by former technological requirement more afterwards, solidification and the demoulding.
Produce at ordinary times and do not do described detection, when temperature rises to former technological temperature setting value, the desired temperature determined by former technique revises its mixing speed temperature-constant operation, all the other temperature ranges determined by former technique, get described temperature section within the scope of it and namely proceed to next temperature section after being warmed up to this section of desired temperature by the setting of its temperature mixing speed.Can revise temperature range that former technique determines if desired to increase and decrease the pumpdown time, all the other are all by former technological requirement operation.
(4) accompanying drawing illustrates:
Accompanying drawing is the circuit structure block diagram of epoxide resin vacuum mixing speed control system.
(5) detailed description of the invention:
As shown in drawings, it is made up of temperature sensor 2, master controller 7, pressure sensor 3, pressure transmitter 4, vavuum pump 5, vavuum pump drive circuit 6, stirring motor drive circuit 8 and storage tank A 1 the circuit structure block diagram of epoxide resin vacuum mixing speed control system.Wherein master controller 7 also can be master control cabinet industrial computer, realizes function described in master controller 7 by it, and master control cabinet industrial computer can realize setting to a complete set of equipment, Centralized Monitoring, major parameter record and operation by configuration software.Pressure sensor 3 is connected with the vacuum chamber of storage tank A 1, and for the vacuum of detection system, master controller 7 opens or closes by vavuum pump drive circuit 6 vacuum that vavuum pump 5 carrys out control system.The signal of pressure sensor 3 send master controller 7 to process through pressure transmitter 4, and master controller 7 circuit is simultaneously for the vacuum of control system.After starting storage tank A 1 degas system, if the pressure in vacuum chamber reaches capping value, then master controller 7 circuit will send signal to vavuum pump drive circuit 6 and magnetic valve, and vavuum pump 5 will start immediately.When the pressure in vacuum chamber reaches preset lower limit, master controller 7 circuit will close vavuum pump 5.Mixing speed controls to be completed by stirring motor drive circuit 8, and its speed control signal is provided by master controller 7.
Claims (2)
1. epoxide resin vacuum mixing speed control system, in secondary mixing system, storage tank A is an epoxy resin, filler compound degas system, it is characterized in that when changing prescription of mixed materials or vacuumizing operating mode, by the vacuum stirring deaeration effect of the mixing speed set under each specified temp (viscosity) of its compound of Site Detection storage tank A, obtain according to the temperature (viscosity) of deaeration efficiency and mixing speed reasonable coordination under each specified temp (viscosity) by comparing, thus do not affect to produce and revise the mixing speed run at ordinary times and arrange, the mixing speed of bubble effusion efficiency and agitator is closely related, when many bubbles being in Different growth phases occur, too high mixing speed will make a part of bubble have little time to grow to break and overflow fully to be brought back again compound liquid depths, too low mixing speed makes bubble take liquid level time lengthening to, effective inclined heated plate is shortened, system utilizes the change of vacuum to reflect bubble effusion efficiency in mixture of epoxy resins, under the design temperature of a certain reflection viscosity B coefficent, by starting vavuum pump, detect vacuum reaches higher limit (low pressure limit value) time from preset lower limit, be reflected in this mixing speed and lower deaeration efficiency is set, and compare the setting for optimizing mixing speed by repeatedly production testing,
Described epoxide resin vacuum mixing speed control system, when the system is operated, epoxy resin after preheating and drying process is first dropped in storage tank A, drop into again under silicon powder is cooled to top temperature and heat up, the temperature of vacuum stirring can be carried out after its top temperature and epoxy resin melting, vacuum is set within the scope of bound, the former process set value of vacuum can be pressed as low pressure limit value, and get vacuum decline (pressure increase) to this low pressure limit value add 6-15% as higher limit, the pressure signal of its reflection vacuum send master controller process, its working signal opening or closing vavuum pump is sent by master controller, the intensification of master controller controls to adopt staged heating mode, the identical warming room of each desirable 3-8 DEG C every, the a little higher than mixing tank design temperature of its terminal temperature, the mixing speed of agitator adopts successively decreases according to described staged heating mode temperature section at different levels, the i.e. maximum temperature mixing speed that adopts former technique to determine to low lapse of temperature, and through the contrast of repeatedly production effect, its mixing speed at different levels and the bubble speed of effusion are adapted, during system works, storage tank A first heats up and opens vacuum pump evacuation at top temperature, vavuum pump and valve is closed when making vacuum reach setting pressure lower limit and reach relevant temperature section design temperature, do when vacuum drops to setting pressure higher limit to open valve and vacuum pump evacuation again after too much bubble is eliminated in several seconds time delay, start the rising timer of vacuum simultaneously, make vacuum reach the timing of setting pressure lower limit to terminate to enter next section, so go round and begin again, sequentially record the rising timer timing time of each vacuum, its rising timer timing time arranges the impact on vacuumizing performance through repeatedly comparision of production reflection mixing speed, the rising timer timing time length of more each vacuum, determine its mixing speed thus mixing speed under obtaining each temperature-viscosity is arranged, then stop heating up after terminal temperature and constant-temperature vacuum stirring deaeration under the desired temperature and activity time thereof of former technological requirement, pour into a mould by former technological requirement more afterwards, solidification and the demoulding, produce when temperature rises to former technological temperature setting value at ordinary times, the desired temperature determined by former technique revises its mixing speed temperature-constant operation, all the other temperature ranges determined by former technique, get described temperature section within the scope of it and namely proceed to next temperature section after being warmed up to this section of desired temperature by the setting of its temperature mixing speed.
2. epoxide resin vacuum mixing speed control system according to claim 1, is characterized in that it comprises:
It is by temperature sensor 2, master controller 7, pressure sensor 3, pressure transmitter 4, vavuum pump 5, vavuum pump drive circuit 6, stirring motor drive circuit 8 and storage tank A 1 form, wherein master controller 7 also can be master control cabinet industrial computer, function described in master controller 7 is realized by it, , pressure sensor 3 is connected with the vacuum chamber of storage tank A 1, for the vacuum of detection system, master controller 7 opens or closes by vavuum pump drive circuit 6 vacuum that vavuum pump 5 carrys out control system, the signal of pressure sensor 3 send master controller 7 to process through pressure transmitter 4, master controller 7 circuit is simultaneously for the vacuum of control system, mixing speed controls to be completed by stirring motor drive circuit 8, its speed control signal is provided by master controller 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510176258.1A CN104772832B (en) | 2015-04-15 | 2015-04-15 | Epoxide resin vacuum mixing speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510176258.1A CN104772832B (en) | 2015-04-15 | 2015-04-15 | Epoxide resin vacuum mixing speed control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104772832A true CN104772832A (en) | 2015-07-15 |
| CN104772832B CN104772832B (en) | 2019-04-23 |
Family
ID=53614753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510176258.1A Active CN104772832B (en) | 2015-04-15 | 2015-04-15 | Epoxide resin vacuum mixing speed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104772832B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603654A (en) * | 2018-12-06 | 2019-04-12 | 超威电源有限公司 | A kind of epoxide-resin glue agitating device and its stirring means |
| CN112213270A (en) * | 2020-09-29 | 2021-01-12 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on viscosity |
| CN112213268A (en) * | 2020-09-29 | 2021-01-12 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on oil inlet pressure |
| CN112263849A (en) * | 2020-09-29 | 2021-01-26 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on environmental pressure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046097A1 (en) * | 1998-03-09 | 1999-09-16 | Board Of Regents Of The University Of Texas System | Mixing and dispensing system for rapidly polymerizing materials |
| JP2003501254A (en) * | 1999-06-15 | 2003-01-14 | ザ ダウ ケミカル カンパニー | METHOD AND APPARATUS FOR PRODUCTION OF COMPOUNDS USING ULTRASONIC APPARATUS |
| CN102300689A (en) * | 2009-01-30 | 2011-12-28 | 芬欧汇川有限公司 | Method and apparatus for controlling the quality in the manufacture of composite material |
| CN103056980A (en) * | 2013-01-18 | 2013-04-24 | 广西梧州五一塑料制品有限公司 | Mixed material kneading monitoring device |
| CN103252849A (en) * | 2013-04-16 | 2013-08-21 | 刘汝斌 | Precise epoxy injector |
-
2015
- 2015-04-15 CN CN201510176258.1A patent/CN104772832B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046097A1 (en) * | 1998-03-09 | 1999-09-16 | Board Of Regents Of The University Of Texas System | Mixing and dispensing system for rapidly polymerizing materials |
| JP2003501254A (en) * | 1999-06-15 | 2003-01-14 | ザ ダウ ケミカル カンパニー | METHOD AND APPARATUS FOR PRODUCTION OF COMPOUNDS USING ULTRASONIC APPARATUS |
| CN102300689A (en) * | 2009-01-30 | 2011-12-28 | 芬欧汇川有限公司 | Method and apparatus for controlling the quality in the manufacture of composite material |
| CN103056980A (en) * | 2013-01-18 | 2013-04-24 | 广西梧州五一塑料制品有限公司 | Mixed material kneading monitoring device |
| CN103252849A (en) * | 2013-04-16 | 2013-08-21 | 刘汝斌 | Precise epoxy injector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603654A (en) * | 2018-12-06 | 2019-04-12 | 超威电源有限公司 | A kind of epoxide-resin glue agitating device and its stirring means |
| CN112213270A (en) * | 2020-09-29 | 2021-01-12 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on viscosity |
| CN112213268A (en) * | 2020-09-29 | 2021-01-12 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on oil inlet pressure |
| CN112263849A (en) * | 2020-09-29 | 2021-01-26 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on environmental pressure |
| CN112263849B (en) * | 2020-09-29 | 2021-09-28 | 湖北鑫英泰系统技术股份有限公司 | Stirring speed control method and device based on environmental pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104772832B (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104802326B (en) | System for controlling vacuum degassing temperature and stirring speed of epoxy resin | |
| CN104772832A (en) | Epoxy resin vacuum stirring speed control system | |
| CN104816392A (en) | Epoxy resin vacuum degassing pressure control system | |
| CN104772833A (en) | Epoxy resin vacuum degassing control system | |
| CN104742265A (en) | Degassing temperature and stirring speed control system for epoxy resin secondary mixed material | |
| CN104086161A (en) | Making method of silicon-based ceramic core with adjustable thermal expansion coefficient | |
| CN102642263B (en) | Vacuum casting process method of photoelastic model | |
| CN104723472B (en) | Temperature controller for use in vacuum degassing of epoxy resin | |
| US6143214A (en) | Mixing and dispensing system for rapidly polymerizing materials | |
| CN104750142B (en) | Resin vacuum degassing secondary mixed material temperature and pressure control system | |
| CN106747369A (en) | A kind of silicon-base ceramic core and preparation method thereof | |
| CN105980119B (en) | For the method for ceramic component casting | |
| CN101611483B (en) | Method and device for encapsulating electronic components using underpressure | |
| EP0172726B1 (en) | Mixing polymers such as rubber | |
| CN104742266B (en) | Epoxide resin vacuum degassing temperature control pressurer system | |
| KR101019510B1 (en) | Vacuum fryer | |
| TWI525721B (en) | Method and apparatus for manufacturing electronic devices | |
| CN104410229A (en) | System and method for vacuum pouring of insulation resin used for motor rotor | |
| CN110556302A (en) | preparation method of electronic silicon carbide chip | |
| JP2005081560A (en) | Resin casting system | |
| US4374081A (en) | Cure of epoxy systems at reduced pressures | |
| CN105835228A (en) | Apparatus for manufacturing artificial stone molded product | |
| KR20070044609A (en) | Method for controlling rubber mixing process automatically | |
| US20160067774A1 (en) | Method and apparatus for pulsed pressure molding | |
| JP4408829B2 (en) | Liquid material discharge device and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201204 Address after: 215400 room 01, building 13, No.1, Zhaoyan Road, Shaxi Town, Taicang City, Suzhou City, Jiangsu Province Patentee after: Suzhou Xineng Environmental Protection Technology Co.,Ltd. Address before: 350004 8 longevity garden, Yi Chau, Taijiang District, Fujian, Fuzhou 401 Patentee before: Zhang Jinmu |