CN111503432A - Manufacturing method of vacuum heat insulation plate - Google Patents
Manufacturing method of vacuum heat insulation plate Download PDFInfo
- Publication number
- CN111503432A CN111503432A CN202010330581.0A CN202010330581A CN111503432A CN 111503432 A CN111503432 A CN 111503432A CN 202010330581 A CN202010330581 A CN 202010330581A CN 111503432 A CN111503432 A CN 111503432A
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- China
- Prior art keywords
- vacuum
- manufacturing
- treatment
- core material
- insulation panel
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Classifications
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- 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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- 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
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
Abstract
The invention aims to solve the technical problem of providing a method for manufacturing a vacuum insulation panel, which can improve the qualification rate of products and effectively shorten the link time from core material drying to vacuumizing. The manufacturing method of the vacuum insulation panel provided by the invention optimizes the manufacturing process flow, firstly carries out bagging treatment on the core material by using the gas barrier protection bag, then puts the bagged core material into drying equipment for baking treatment, and directly puts the baked bagged core material into a vacuum machine for vacuumizing and packaging to treat the vacuum insulation panel. Therefore, the time from drying the core material to vacuumizing is greatly shortened, and the bag-sleeved core material is ensured to be vacuumized at a higher temperature, so that defective products in the production process are reduced, and the finished product qualification rate of the hollow heat insulation plate is improved. Is suitable for being popularized in the field of vacuum heat preservation.
Description
Technical Field
The invention belongs to the field of vacuum heat preservation, and particularly relates to a manufacturing method of a vacuum heat insulation plate.
Background
The vacuum insulated panel (VIP for short) is a new type of heat-insulating material, its heat conductivity coefficient is low, heat-insulating effect is good, occupied space proportion is small, and it can be extensively used in various fields. The glass fiber is prepared by taking glass balls or waste glass as a raw material through processes of high-temperature melting, wire drawing and the like, is an inorganic non-metallic material with excellent performance, has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, and can be used in the field of heat insulation and heat preservation.
At present, the manufacturing process of the vacuum insulation panel in the industry also has some defects, for example, products with partial specifications exist, because the bagging time is long, when the dried core material is bagged and transported to a vacuum machine for vacuum pumping, the temperature of the core material is reduced to twenty-thirty degrees or even cooled, the moisture content of the core material is increased due to moisture absorption in the cooling process, and the gas in the cooled bagged core material is not easy to be pumped out, so that the qualification rate of the vacuum insulation panel after vacuum packaging is reduced, and the qualification rate of the finished product of the vacuum insulation panel is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for manufacturing a vacuum insulation panel, which can improve the qualification rate of products and effectively shorten the link time from core material drying to vacuumizing.
The technical scheme adopted by the invention for solving the technical problems is as follows: the manufacturing method of the vacuum insulation panel comprises the following steps:
A. preparing a fiber raw material;
B. heating and pressurizing the fiber raw material prepared in the step A to obtain a blocky fiber board;
C. cutting the blocky fiber board obtained by the treatment in the step B to obtain a core material;
D. filling the core material obtained by the treatment in the step C into an air-barrier protection bag to obtain a bagging core material;
E. putting the bagging core material obtained by the treatment in the step D into drying equipment for baking treatment;
F. directly putting the sleeve bag core material baked in the step E into a vacuum machine for vacuumizing and packaging to process the vacuum heat insulation plate;
and G, performing vacuum pumping and packaging treatment on the F medium to obtain a vacuum heat insulation plate, and performing rolling and edge folding treatment on the vacuum heat insulation plate to obtain the vacuum heat insulation plate.
Further, the fiber raw material is a fiber raw material formed by mixing basalt fibers and medium alkali glass fibers according to any proportion.
Further, the massive fiber board in the step B is doped with chloride particles, and the weight of the chloride particles is less than 5% of that of the massive fiber board.
Further, the heating temperature in the step B is 510-640 ℃, the pressure during pressurization is 0.1-0.85 Pa, and the time of heating and pressurization treatment is 20-30 minutes.
Further, the temperature of the baking treatment in the step E is 65-85 ℃; the duration of the baking treatment is more than 30 minutes.
Further, the pressure of the vacuum packaging process in the step F is 5 x 10-2Pa, and the time of vacuumizing and packaging is 10-20 minutes.
Further, the gas barrier protection bag in the step D is of a four-layer structure, and comprises a nylon layer, a polyethylene layer, a vacuum aluminum-plated film layer and an aluminum foil layer from top to bottom in sequence.
Further, the chloride particles are any one of sodium chloride particles or potassium chloride particles or a mixture of potassium chloride particles and sodium chloride particles, and the potassium chloride particles and the sodium chloride particles in the mixture are mixed at any specific gravity.
Further, the sodium chloride or potassium chloride particles have a diameter of 50 to 150 microns.
Further, the doping process of the chloride particles is as follows: firstly, preparing a chloride solution with the spraying concentration of 15-33%, then spraying the chloride solution with the concentration of 15-33% on the surface of a blocky fiber board, and then pressurizing the blocky fiber board; the process of the pressure treatment is as follows: instantaneously applying a pressure of 0.4-1.2Pa to the blocky fiber board, and then heating the blocky fiber board subjected to pressure treatment; the heat treatment process is as follows: and putting the pressed blocky fiber board into an environment with the temperature of 20-85 ℃, and continuously heating for 8-12 minutes.
The invention has the beneficial effects that: the manufacturing method of the vacuum insulation panel provided by the invention optimizes the manufacturing process flow, firstly carries out bagging treatment on the core material by using the gas barrier protection bag, then puts the bagged core material into drying equipment for baking treatment, and directly puts the baked bagged core material into a vacuum machine for vacuumizing and packaging to treat the vacuum insulation panel. Therefore, the time from drying the core material to vacuumizing is greatly shortened, and the bag-sleeved core material is ensured to be vacuumized at a higher temperature, so that defective products in the production process are reduced, and the finished product qualification rate of the hollow heat insulation plate is improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The manufacturing method of the vacuum insulation panel comprises the following steps:
A. preparing a fiber raw material;
B. heating and pressurizing the fiber raw material prepared in the step A to obtain a blocky fiber board;
C. cutting the blocky fiber board obtained by the treatment in the step B to obtain a core material;
D. filling the core material obtained by the treatment in the step C into an air-barrier protection bag to obtain a bagging core material;
E. putting the bagging core material obtained by the treatment in the step D into drying equipment for baking treatment;
F. directly putting the sleeve bag core material baked in the step E into a vacuum machine for vacuumizing and packaging to process the vacuum heat insulation plate;
and G, performing vacuum pumping and packaging treatment on the F medium to obtain a vacuum heat insulation plate, and performing rolling and edge folding treatment on the vacuum heat insulation plate to obtain the vacuum heat insulation plate. The manufacturing method of the vacuum insulation panel provided by the invention optimizes the manufacturing process flow, firstly carries out bagging treatment on the core material by using the gas barrier protection bag, then puts the bagged core material into drying equipment for baking treatment, and directly puts the baked bagged core material into a vacuum machine for vacuumizing and packaging to treat the vacuum insulation panel. Therefore, the time from drying the core material to vacuumizing is greatly shortened, and the bag-sleeved core material is ensured to be vacuumized at a higher temperature, so that defective products in the production process are reduced, and the finished product qualification rate of the hollow heat insulation plate is improved.
In the above embodiments, the fiber material may be selected in various ways, and preferably, the fiber material is a mixture of basalt fiber and medium alkali glass fiber in any ratio.
In order to further improve the strength of the massive fiber board, chloride particles are doped in the massive fiber board in the step B, and the weight of the chloride particles is less than 5% of that of the massive fiber board.
The heating and pressurizing treatment has different effects under different conditions, the heating temperature in the step B is 510-640 ℃, the pressure during pressurizing is 0.1-0.85 Pa, and the heating and pressurizing treatment time is 20-30 minutes. The effect is optimal under such conditions.
The baking temperature and time also influence the product quality, and the baking temperature in the step E is 65-85 ℃; the duration of the baking treatment is more than 30 minutes, and the effect is better under the baking condition.
In addition, the pressure of the vacuum packaging process in the step F is 5 x 10-2Pa, the time of vacuumizing and packaging treatment is 10-20 minutes, and the effect is better on the premise.
The gas barrier protection bag is made of various materials, preferably, the gas barrier protection bag in the step D is of a four-layer structure, and the gas barrier protection bag sequentially comprises a nylon layer, a polyethylene layer, a vacuum aluminum-plated film layer and an aluminum foil layer from top to bottom.
Further, the chloride particles are any one of sodium chloride particles or potassium chloride particles or a mixture of potassium chloride particles and sodium chloride particles, and the potassium chloride particles and the sodium chloride particles in the mixture are mixed at any specific gravity.
Furthermore, the strength of the fibrous board material is affected by the presence of sodium chloride or potassium chloride particles, preferably 50-150 microns in diameter.
The doping mode of the chloride particles is different, and preferably, the doping process of the chloride particles is as follows: firstly, preparing a chloride solution with the spraying concentration of 15-33%, then spraying the chloride solution with the concentration of 15-33% on the surface of a blocky fiber board, and then pressurizing the blocky fiber board; the process of the pressure treatment is as follows: instantaneously applying a pressure of 0.4-1.2Pa to the blocky fiber board, and then heating the blocky fiber board subjected to pressure treatment; the heat treatment process is as follows: and putting the pressed blocky fiber board into an environment with the temperature of 20-85 ℃, and continuously heating for 8-12 minutes.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A method for manufacturing a vacuum insulation panel is characterized by comprising the following steps:
A. preparing a fiber raw material;
B. heating and pressurizing the fiber raw material prepared in the step A to obtain a blocky fiber board;
C. cutting the blocky fiber board obtained by the treatment in the step B to obtain a core material;
D. filling the core material obtained by the treatment in the step C into an air-barrier protection bag to obtain a bagging core material;
E. putting the bagging core material obtained by the treatment in the step D into drying equipment for baking treatment;
F. directly putting the sleeve bag core material baked in the step E into a vacuum machine for vacuumizing and packaging to process the vacuum heat insulation plate;
and G, performing vacuum pumping and packaging treatment on the F medium to obtain a vacuum heat insulation plate, and performing rolling and edge folding treatment on the vacuum heat insulation plate to obtain the vacuum heat insulation plate.
2. A method of manufacturing a vacuum insulation panel according to claim 1, wherein: the fiber raw material is prepared by mixing basalt fiber and medium alkali glass fiber in any proportion.
3. A method of manufacturing a vacuum insulation panel according to claim 1, wherein: and B, doping chloride particles in the massive fiber board, wherein the weight of the chloride particles is less than 5% of that of the massive fiber board.
4. A method of manufacturing a vacuum insulation panel according to claim 1, wherein: and the heating temperature in the step B is 510-640 ℃, the pressure during pressurization is 0.1-0.85 Pa, and the time of heating and pressurization treatment is 20-30 minutes.
5. A method of manufacturing a vacuum insulation panel according to claim 1, wherein: the temperature of the baking treatment in the step E is 65-85 ℃; the duration of the baking treatment is more than 30 minutes.
6. A method of manufacturing a vacuum insulation panel according to claim 1, wherein: the pressure of the vacuum packaging process in the step F is 5 x 10-2Pa, and the time of vacuumizing and packaging is 10-20 minutes.
7. A method of manufacturing a vacuum insulation panel according to claim 1, wherein: and D, the gas barrier protection bag is of a four-layer structure and sequentially comprises a nylon layer, a polyethylene layer, a vacuum aluminum-plated film layer and an aluminum foil layer from top to bottom.
8. A method of manufacturing a vacuum insulation panel according to claim 3 wherein: the chloride particles are any one of sodium chloride particles or potassium chloride particles or a mixture of potassium chloride particles and sodium chloride particles, and the potassium chloride particles and the sodium chloride particles in the mixture are mixed according to any specific gravity.
9. A method of manufacturing a vacuum insulation panel according to claim 8 wherein: the diameter of the sodium chloride or potassium chloride particles is 50-150 microns.
10. A method of manufacturing a vacuum insulation panel according to claim 3 wherein: the doping process of the chloride particles is as follows: firstly, preparing a chloride solution with the spraying concentration of 15-33%, then spraying the chloride solution with the concentration of 15-33% on the surface of a blocky fiber board, and then pressurizing the blocky fiber board; the process of the pressure treatment is as follows: instantaneously applying a pressure of 0.4-1.2Pa to the blocky fiber board, and then heating the blocky fiber board subjected to pressure treatment; the heat treatment process is as follows: and putting the pressed blocky fiber board into an environment with the temperature of 20-85 ℃, and continuously heating for 8-12 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010330581.0A CN111503432B (en) | 2020-04-24 | 2020-04-24 | Manufacturing method of vacuum heat insulation plate |
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| CN202010330581.0A CN111503432B (en) | 2020-04-24 | 2020-04-24 | Manufacturing method of vacuum heat insulation plate |
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| CN111503432A true CN111503432A (en) | 2020-08-07 |
| CN111503432B CN111503432B (en) | 2021-12-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722407A (en) * | 2020-12-18 | 2021-04-30 | 四川迈科隆真空新材料有限公司 | Edge folding method for vacuum insulation panel |
| CN114919248A (en) * | 2022-04-28 | 2022-08-19 | 苏州市君悦新材料科技股份有限公司 | Preparation method of vacuum heat insulation plate |
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| KR20120114004A (en) * | 2011-04-06 | 2012-10-16 | (주)엘지하우시스 | Vacuum heat insulation pannel and manufacturing mathod of the same |
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| CN2731243Y (en) * | 2003-10-23 | 2005-10-05 | 松下电器产业株式会社 | Vacuum thermal-insulation material, freezing and low temperature equipment using the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722407A (en) * | 2020-12-18 | 2021-04-30 | 四川迈科隆真空新材料有限公司 | Edge folding method for vacuum insulation panel |
| CN114919248A (en) * | 2022-04-28 | 2022-08-19 | 苏州市君悦新材料科技股份有限公司 | Preparation method of vacuum heat insulation plate |
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| CN111503432B (en) | 2021-12-21 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A manufacturing method for vacuum insulation board Effective date of registration: 20230710 Granted publication date: 20211221 Pledgee: Sichuan jiahaoda Packaging Manufacturing Co.,Ltd. Pledgor: SICHUAN MICRON VIP NEW MATERIAL CO.,LTD. Registration number: Y2023980047846 |
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