CN105570617A - Manufacturing method of vacuum insulation board - Google Patents
Manufacturing method of vacuum insulation board Download PDFInfo
- Publication number
- CN105570617A CN105570617A CN201410542018.4A CN201410542018A CN105570617A CN 105570617 A CN105570617 A CN 105570617A CN 201410542018 A CN201410542018 A CN 201410542018A CN 105570617 A CN105570617 A CN 105570617A
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- Prior art keywords
- vacuum
- obstructing film
- insulating plate
- core
- vacuum heat
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Insulation (AREA)
Abstract
The invention provides a manufacturing method of a vacuum insulation board. The manufacturing method comprises the steps that firstly, a core material is baked to be dehydrated in the atmosphere state; secondly, the core material and a barrier film are placed into a vacuum chamber, air exhausting is conducted, and the vacuum degree requirement for manufacturing the vacuum insulation board is met; thirdly, the surface of the core material is wrapped with the barrier film under the vacuum condition, and the barrier film is thermally sealed; and fourthly, the vacuum insulation board is taken out of the vacuum chamber through deflation. According to the manufacturing method, the baked core material is directly sent into the vacuum chamber, so that the core material and the barrier film are exposed in the vacuum environment, compared with the exhausting time for obtaining the same vacuum degree, the exhausting time is shortened by 20 times, and the production efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of making method of vacuum heat-insulating plate, the vacuum heat-insulating plate of production is mainly used in the heat-insulation and heat-preservation of building, household electric appliance, pipeline and other equipment.
Background technique
Vacuum heat-insulating plate (Vacuuminsulationpanel, be called for short VIP) be a kind of Novel heat insulation energy-saving material adopting vacuum insulation principle to make, by surface, there is the potting material of high barrier and extremely strong core, getter or the siccative of heat-shielding performance is formed, with potting material core, getter or siccative encapsulated under vacuum conditions, being the principle by utilizing vacuum insulation, reaching insulation, energy-conservation object.
The physical condition of vacuum insulation is that degree of vacuum must meet insulating characteristics requirement, and namely internal pressure is enough low, to reach gas molecule motion for molecular flow condition.That is, after VIP encapsulation, how to ensure to meet insulating characteristics, inner degree of vacuum is the key being decided by its quality of product and working life.
VIP core is made up of multi-layer microporous thermoinsulation material, and the gas extracting its inside needs the longer time, is the main difficulty run in mass industrialized production.Be exposed to the gas in the porous material meeting absorbed air under physical environment and moisture, add in core production process the moisture remained in core, make it water content higher.The heat transfer of aqueous vapor molecule is greater than N
2, O
2, CO
2deng Permanent gas heat-transfer coefficient, therefore, too much water can cause heat-insulating property decline, difficulty of bleeding, and even changing the characteristic of core, until disabler, is one of topmost influence factor of VIP product.VIP outer cladding obstructing film, such as: obstructing film, under being exposed to physical environment, the Permanent gas of its adsorption and condensable gas, typical in water, in VIP, various partial pressure all can destroy the effect of vacuum insulation, and this is also the principal element directly affecting VIP quality and life-span.
Existing vacuum heat-insulating plate produces the evacuation method mostly adopting bag to take out, and its concrete mode is as follows:
Step one: by the barrier bag of pouch machine manufacturing specification size, inside back cover limit, stays open-ended;
Step 2: under the state of air, core is cut, through sufficient baking dehydration, the water content of core must be less than 1%;
Step 3: place getter in the core toasted out, and being loaded in the barrier bag in step one, and then put into vacuum chamber, through bleeding for a long time, reaches barrier bag hot-seal after the requirement of degree of vacuum;
Step 4: VIP is taken out from vacuum chamber by venting.
There is following problem in this kind of method:
1. baking dehydration needs 120min ~ 180min, but the moisture in core fully can not be dried, still containing being enough to the residual moisture affecting VIP quality;
2., in step 3, the core after baking is through pack with after placing getter, and before loading vacuum chamber, core surfaces temperature can decline, and has the risk of second adsorption water;
3. in step 3, along with the change of pressure, sack conductance of bleeding diminishes gradually, and pumpdown time reaches more than 40min, makes manufacturing efficiency be difficult to improve;
4. the barrier bag in step one adopts the obstructing film of polyphosphazene polymer ester material to make usually, the gas of barrier bag internal surface absorption and aqueous vapor, be difficult in a vacuum extract, after sack encapsulation, meeting desorption out, destroy the degree of vacuum of VIP inside, VIP thermal conductivity is increased, and shortens its working life.
During comprehensive above factor can find out that VIP produces in enormous quantities, evacuation method is the key of products quality guarantee, is also the key improving whole production line production capacity, realizes the core technology of intelligent Full-automatic production line especially.Thus, the present inventor studies further to this, develops a kind of making method of brand-new vacuum heat-insulating plate.
Summary of the invention
The object of the present invention is to provide a kind of making method of vacuum heat-insulating plate, not only can improve the quality of product of vacuum heat-insulating plate, and whole production line production capacity can be improved, realize intelligent full-automatic Production line.
To achieve these goals, technological scheme of the present invention is as follows:
A kind of making method of vacuum heat-insulating plate:
Step one: under the state of air, by core baking dehydration;
Step 2: described core and obstructing film are put into vacuum chamber and bleed and slough residual moisture further, reach the requirement of the degree of vacuum making vacuum heat-insulating plate;
Step 3: under vacuum, makes described obstructing film be coated on described core surfaces, and by obstructing film hot-seal;
Step 4: vacuum heat-insulating plate is taken out from vacuum chamber by venting.
Further: in step one, the time of described baking dehydration is 120min, and the temperature of described baking dehydration is 240 DEG C.
Further: in step 2, described obstructing film time of being detained in a vacuum chamber is greater than or equal to 2min, and described core time of being detained in a vacuum chamber is less than or equal to 10min.
Further: dark zone and heat-sealable area are set in described vacuum chamber, described core is bled in described dark zone, described obstructing film is bled and is heated and degass in described dark zone, after reaching the requirement of the degree of vacuum making vacuum heat-insulating plate, is sealed by described obstructing film in heat-sealable area.
Further: described obstructing film is the barrier bag using high barrier material to make, and inside back cover limit, stays open-ended.
Further: described obstructing film is the upper obstructing film and lower obstructing film that use high barrier material to make, and described core is placed between described upper obstructing film and lower obstructing film.
Further: described obstructing film is the back of the body envelope using high barrier material to make, and described core is placed in described back of the body envelope.
Further: to be provided with heating pipe in described region of no pressure, described heating pipe heats described upper obstructing film and lower resistance diaphragm.
Further: described upper obstructing film, lower obstructing film and core independently enter in described vacuum chamber bleeds.
Further: described upper obstructing film, lower obstructing film and core are not in contact with each other each other to enter in described vacuum chamber and bleed.
Further: described core is positioned over described lower obstructing film surface, enters in described vacuum chamber and bleed together with described lower obstructing film.
The present invention adopts and directly sends the core after baking to vacuum chamber, thus makes core and obstructing film be exposed in vacuum environment, compared with prior art, has the following advantages:
1., under the requirement relative to the same degree of vacuum of acquisition, pumpdown time shortens 20 times, will greatly enhance productivity;
2. utilize vacuum dehydration principle, in a vacuum chamber, reduce evaporation of water temperature, as long as configure rational vacuum pump set, just in the shortest time, drying process can be carried out to vacuum core;
3. extract gas and the aqueous vapor of obstructing film adsorption in a vacuum, avoid it and be exposed to the Permanent gas of internal surface absorption and the impact of condensable gas under physical environment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of vacuum chamber in the preferred embodiment of the present invention one;
Fig. 2 is the schematic diagram of high barrier diaphragm in the preferred embodiment of the present invention one;
Fig. 3 is the schematic diagram of high barrier diaphragm in the preferred embodiment of the present invention two;
Fig. 4 is the schematic diagram of high barrier diaphragm in the preferred embodiment of the present invention three;
Fig. 5 is the schematic diagram of vacuum chamber in the preferred embodiment of the present invention four;
Fig. 6 is the plotted curve of test experiments of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Embodiment one:
As depicted in figs. 1 and 2, a kind of making method of vacuum heat-insulating plate,
Step one: under the state of air, cuts core 1, divides through baking dehydration, to remove the moisture be retained in core 1.Because have employed new production technique of the present invention, do not need must be less than 1% as the water content controlling the core 1 after toasting strict in prior art.In the present embodiment, the time of baking is 120min, and roasting temperature is 240 DEG C, the overlong time of baking, and temperature is too high will consume a large amount of energy, and increase cost, the time of baking is too short, and temperature is too low, and baking dehydration effect is poor, affects subsequent step.
Step 2: core 1, obstructing film 2 are put into vacuum chamber 3 and bled, will be adsorbed in moisture and the desorbing gas on core 1 and obstructing film 2 surface and parse further, until reach the requirement of the degree of vacuum making vacuum heat-insulating plate; In the present embodiment, described high barrier diaphragm 2 is divided into obstructing film 21 and lower obstructing film 22, and described vacuum chamber 3 mutually put into non-contiguously by described upper obstructing film 21, lower obstructing film 22 and core 1.Dark zone 31 and heat-sealable area 32 are set in vacuum chamber 3, core 1 is when dark zone 31 vacuumizes, can vacuumize all directions of core 1, vacuumize relative to the pack of openings at one side in prior art, conductance substantially increases, save the time vacuumized, reduce cost of production.In like manner, upper obstructing film 21 and lower obstructing film 22 are bled in dark zone, extract gas and the aqueous vapor of obstructing film 21 and lower obstructing film 22 adsorption in a vacuum, avoid its Permanent gas being exposed to internal surface absorption under physical environment and condensable gas.In the present embodiment, heating pipe 33 is set in dark zone 31, by heating pipe 33, upper obstructing film 21 and lower obstructing film 22 is heated, to remove aqueous vapor and the gas of upper obstructing film 21 and lower obstructing film 22 adsorption more fast.
Upper obstructing film 21 and lower obstructing film 22 time of being detained in vacuum chamber 3 is more than or equal to 2min, if the time of being detained is less than 2min, then the gas of upper obstructing film 21 and lower obstructing film 22 adsorption and aqueous vapor fully cannot be extracted.Core 1 time of being detained in vacuum chamber 3 is less than or equal to 10min.Certainly, the material according to core is specifically determined by the length of time of being detained.
Step 3: core 1 is placed between obstructing film 21 and lower obstructing film 22, and in the heat-sealable area 32 of vacuum chamber 3 by upper obstructing film 21 and lower obstructing film heat 22 sealing.
Step 4: vacuum heat-insulating plate is taken out from vacuum chamber 3 by venting.
Test experiments:
With reference to figure 6, core is mainly tested in this experiment, and at aluminium bag, outer and core is contained in the situation of change along with pumpdown time inside aluminium bag.The length and width of aluminium bag are respectively 450mm, 360mm, and core length, width and height are respectively 300mm, 300mm and 20mm.The diameter of pump-line is 200mm, experimental result as shown in Figure 5, at gas pressure from 10
5drop to 10
2under vacuum chamber pressure makes gas molecule motion state be in turbulent flow or viscous flow state, bleed conductance limited and not obvious, the speed of exhaust is very fast, because pressure is higher, the gas of core surfaces release is less on the impact of the degree of vacuum of vacuum chamber, and therefore, naked to take out and pack the time phase difference taken out little.Bleed after a period of time, in vacuum chamber, gas molecule motion state is transitioned into molecular flow condition by viscous flow gradually, and the gas of core surfaces release becomes the principal element affecting pressure in vacuum tank.Molecular flow condition lower bag mouth conductance of bleeding declines rapidly, and in bag, in pressure and vacuum chamber, pressure creates larger pressure reduction, pack the conductance of bleeding taken out obviously limited, and the naked conductance of bleeding taken out is not quite limited.
Embodiment two
As shown in Figure 3, the difference of the present embodiment and embodiment one is that obstructing film 2 is the barrier bag using high barrier material to make, and inside back cover limit, stays open-ended.Remaining part is identical with embodiment one, repeats no more.
Embodiment three
As shown in Figure 4, the difference of the present embodiment and embodiment one is the back of the body envelope that obstructing film 2 is made into for high barrier material, and described core 1 is placed in back of the body envelope.The remaining part of the present embodiment is identical with embodiment one, therefore repeats no more.
Embodiment four
As shown in Figure 5, the present embodiment and the difference of embodiment one are that core 1 enters in vacuum chamber 3 together with being directly positioned on lower obstructing film 22, and remaining part is identical with embodiment one.Therefore repeat no more.
In sum, directly send the core after baking to vacuum chamber because the present invention adopts, the core of multilayer is all exposed in a vacuum, avoid the obstruction of obstructing film, increase conductance of bleeding, be convenient to short time exhaust, and extract remaining aqueous vapor, make industrialized mass become possibility.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (10)
1. a making method for vacuum heat-insulating plate, is characterized in that:
Step one: under the state of air, by core baking dehydration;
Step 2: described core and obstructing film are put into vacuum chamber and bleed and slough residual moisture further, reach the requirement of the degree of vacuum making vacuum heat-insulating plate;
Step 3: under vacuum, makes described obstructing film be coated on described core surfaces, and by obstructing film hot-seal;
Step 4: vacuum heat-insulating plate is taken out from vacuum chamber by venting.
2. the making method of a kind of vacuum heat-insulating plate as claimed in claim 1, it is characterized in that: in step one, the time of described baking dehydration is 120min, and the temperature of described baking dehydration is 240 DEG C.
3. the making method of a kind of vacuum heat-insulating plate as claimed in claim 1, is characterized in that: in step 2, and described obstructing film time of being detained in a vacuum chamber is greater than or equal to 2min, and described core time of being detained in a vacuum chamber is less than or equal to 10min.
4. the making method of a kind of vacuum heat-insulating plate as claimed in claim 1, it is characterized in that: dark zone and heat-sealable area are set in described vacuum chamber, described core is bled in described dark zone, described obstructing film is bled and is heated and degass in described dark zone, after reaching the requirement of the degree of vacuum making vacuum heat-insulating plate, in heat-sealable area, described obstructing film is sealed.
5. the making method of a kind of vacuum heat-insulating plate as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described obstructing film is the barrier bag using high barrier material to make, and inside back cover limit, stays open-ended.
6. the making method of a kind of vacuum heat-insulating plate as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described obstructing film is the upper obstructing film and lower obstructing film that use high barrier material to make, and described core is placed between described upper obstructing film and lower obstructing film.
7. the making method of a kind of vacuum heat-insulating plate as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described obstructing film is the back of the body envelope using high barrier material to make, and described core is placed in described back of the body envelope.
8. the making method of a kind of vacuum heat-insulating plate as claimed in claim 6, is characterized in that: be provided with heating pipe in described region of no pressure, and described heating pipe heats described upper obstructing film and lower resistance diaphragm.
9. the making method of a kind of vacuum heat-insulating plate according to claim 6, is characterized in that: described upper obstructing film, lower obstructing film and core are not in contact with each other each other to enter in described vacuum chamber and bleed.
10. the making method of a kind of vacuum heat-insulating plate according to claim 6, is characterized in that: described core is positioned over described lower obstructing film surface, enters in described vacuum chamber and bleed together with described lower obstructing film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542018.4A CN105570617A (en) | 2014-09-29 | 2014-10-14 | Manufacturing method of vacuum insulation board |
| PCT/CN2015/090944 WO2016050192A1 (en) | 2014-09-29 | 2015-09-28 | Method for manufacturing vacuum insulation panel |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410514442 | 2014-09-29 | ||
| CN2014105144428 | 2014-09-29 | ||
| CN201410542018.4A CN105570617A (en) | 2014-09-29 | 2014-10-14 | Manufacturing method of vacuum insulation board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105570617A true CN105570617A (en) | 2016-05-11 |
Family
ID=55629439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410542018.4A Pending CN105570617A (en) | 2014-09-29 | 2014-10-14 | Manufacturing method of vacuum insulation board |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105570617A (en) |
| WO (1) | WO2016050192A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106742220A (en) * | 2016-12-27 | 2017-05-31 | 苏州维艾普新材料股份有限公司 | A kind of vacuum insulation board manufacturing apparatus |
| CN110822219A (en) * | 2019-09-19 | 2020-02-21 | 滁州银兴新材料科技有限公司 | Processing technology for preparing refrigerator vacuum insulation board by novel drying method |
| CN112550856A (en) * | 2020-12-09 | 2021-03-26 | 北新集团建材股份有限公司 | Production system of vacuum heat preservation mineral wool board |
| CN112610807A (en) * | 2020-12-18 | 2021-04-06 | 四川迈科隆真空新材料有限公司 | Manufacturing and cutting method of multi-section strip-shaped vacuum heat-insulating plate |
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| JP2000291882A (en) * | 1999-04-02 | 2000-10-20 | Matsushita Refrig Co Ltd | Manufacture of vacuum heat insulating body |
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| CN103090157A (en) * | 2013-02-05 | 2013-05-08 | 山东华德隆建材科技有限公司 | Vacuum heat insulation plate and preparation method thereof |
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| CN102729316A (en) * | 2012-07-10 | 2012-10-17 | 袁江涛 | Preparation method of vacuum heat insulating plate |
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2014
- 2014-10-14 CN CN201410542018.4A patent/CN105570617A/en active Pending
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2015
- 2015-09-28 WO PCT/CN2015/090944 patent/WO2016050192A1/en active Application Filing
Patent Citations (5)
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| JP2000291882A (en) * | 1999-04-02 | 2000-10-20 | Matsushita Refrig Co Ltd | Manufacture of vacuum heat insulating body |
| CN1634751A (en) * | 2003-12-29 | 2005-07-06 | 财团法人工业技术研究院 | Vacuum packaging method and apparatus thereof |
| CN102174974A (en) * | 2011-03-01 | 2011-09-07 | 高家碧 | Vacuum insulation panel supported by full-paperboard structure and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106742220A (en) * | 2016-12-27 | 2017-05-31 | 苏州维艾普新材料股份有限公司 | A kind of vacuum insulation board manufacturing apparatus |
| CN110822219A (en) * | 2019-09-19 | 2020-02-21 | 滁州银兴新材料科技有限公司 | Processing technology for preparing refrigerator vacuum insulation board by novel drying method |
| CN110822219B (en) * | 2019-09-19 | 2021-06-08 | 滁州银兴新材料科技有限公司 | Processing technology for preparing refrigerator vacuum insulation board by novel drying method |
| CN112550856A (en) * | 2020-12-09 | 2021-03-26 | 北新集团建材股份有限公司 | Production system of vacuum heat preservation mineral wool board |
| CN112550856B (en) * | 2020-12-09 | 2021-12-21 | 北新集团建材股份有限公司 | Production system of vacuum heat preservation mineral wool board |
| CN112610807A (en) * | 2020-12-18 | 2021-04-06 | 四川迈科隆真空新材料有限公司 | Manufacturing and cutting method of multi-section strip-shaped vacuum heat-insulating plate |
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| Publication number | Publication date |
|---|---|
| WO2016050192A1 (en) | 2016-04-07 |
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Application publication date: 20160511 |
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