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US20030159404A1 - Method for manufacturing a vacuum-insulated panel - Google Patents

Method for manufacturing a vacuum-insulated panel Download PDF

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Publication number
US20030159404A1
US20030159404A1 US10/083,347 US8334702A US2003159404A1 US 20030159404 A1 US20030159404 A1 US 20030159404A1 US 8334702 A US8334702 A US 8334702A US 2003159404 A1 US2003159404 A1 US 2003159404A1
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US
United States
Prior art keywords
insulating core
bag
vacuum
core material
opening
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.)
Abandoned
Application number
US10/083,347
Inventor
Chan-Hsiang Chang
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Industrial Technology Research Institute ITRI
Original Assignee
Industrial Technology Research Institute ITRI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Industrial Technology Research Institute ITRI filed Critical Industrial Technology Research Institute ITRI
Priority to US10/083,347 priority Critical patent/US20030159404A1/en
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE reassignment INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, CHAN-HSIANG
Publication of US20030159404A1 publication Critical patent/US20030159404A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E04B1/803—Heat insulating elements slab-shaped with vacuum spaces included in the slab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/06—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/242—Slab shaped vacuum insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/10—Insulation, e.g. vacuum or aerogel insulation

Definitions

  • the present invention relates to a method for manufacturing a vacuum-insulated panel, particularly a method that utilizes the grooves design to reduce vacuumizing time during the processes of manufacturing a vacuum-insulated panel.
  • a conventional vacuum-insulated panel (as shown in FIG. 1) generally consists of an insulating core material 1 , getters 2 and a barrier film bag 3 .
  • the insulating core material 1 usually is selected from woods, sand soil, bricks and tiles, etc.
  • the insulating core material 1 made from the above-mentioned materials has a relatively high thermal conduction coefficient and tends to incur thermal conduction.
  • the most commonly used approach is to increase the thickness of the insulating core material 1 .
  • most producers utilize blowing materials to make the insulating core material 1 . As the blowing materials have air bubbles, a vacuumizing process is required to suck the air out to make the air bubbles vacuum.
  • the vacuum portion does not have thermal conduction and convection, thus can reduce thermal conduction coefficient and improve thermal insulation effect of the vacuum-insulated panel.
  • the processes include: first, providing an insulating core material, getters and a barrier film bag, assembling the insulating core material, getters and the barrier film bag to become a semi-finished product, then placing the semi-finished product into a vacuum chamber for vacuumizing until the vacuum chamber reaching a desired vacuum degree. The semi-finished product will also reach the desired vacuum degree. Then heat seal the semi-finished product completely, and then release the vacuum in the vacuum chamber, and remove the sealed vacuum-insulated panel to complete the manufacturing processes.
  • the primary object of the invention is to provide a method that utilizes the grooves design on the insulating core material to reduce the vacuumizing time during manufacturing processes of vacuum-insulated panel.
  • Another object of the invention is to use heat sealing capability of a barrier film bag and a plastic tube to directly vacuumize the insulating core material without using vacuum chamber thereby make manufacturing process simpler, more convenient and reliable, and also reducing production costs.
  • the method of the invention includes the steps of: providing at least one of insulating core material and forming uneven surfaces thereon, stacking the insulating core material, placing the stacked insulating core materials in a bag, forming the bag in a pouch fashion with a sealed space except an opening for vacuumizing use, then connecting the opening to a vacuum system to vacuumize the sealed space, finally sealing the opening to complete the production of the vacuum-insulated panel.
  • the insulating core material has grooves to function as air passages when the vacuum system proceeds vacuumizing to the sealed space. The vacuumizing time can be reduced and production is simplified, convenient and more reliable.
  • FIG. 1 is a schematic view of a conventional vacuum-insulated panel.
  • FIG. 2 is a flowchart of conventional method for manufacturing a vacuum-insulated panel.
  • FIG. 3 is a flowchart of manufacturing a vacuum-insulated panel according to the invention.
  • FIGS. 4A through 4E are schematic views of manufacturing process steps of the invention.
  • FIG. 3 is the flowchart of manufacturing a vacuum-insulated panel according to the invention.
  • the method includes the steps of: providing at least one insulating core material with uneven surfaces 10 , containing the insulating core material within a bag with an opening 11 , vacuumizing the bag through the opening of the bag 12 , and sealing the opening of the bag 13 , finishing the vacuum-insulated panel 14 .
  • the details of the manufacturing processes are elaborated as following contents.
  • the insulating core material is provided with a plurality of open cells formed which has pores in the 10 ⁇ 100 micron size range, and may be porous blowing materials made from 100% polystyrene.
  • the surfaces of the insulating core material may be formed with grooves by pressing to become uneven surfaces.
  • the insulating core material is formed uneven surfaces, a plurality of cavities is formed on the insulating core material. And a plurality of getters is put on the cavities. Then the insulating core materials are stacked together. Then place the stacked and uneven insulating core material into a bag with an opening. Connect the opening of the bag to a vacuum system to vacuumize the sealed space of the bag. Finally, seal the opening of the bag to complete finished the vacuum-insulated panel.
  • FIGS. 4A through 4E for an embodiment of the method for manufacturing vacuum-insulated panel according to the invention.
  • the insulating core materials 20 may be porous blowing materials made from 100% polystyrene. Then the surface of the insulating core materials 20 formed V-shaped grooves to become uneven surfaces 21 by pressing, and also formed a plurality of cavities 22 . The getters 40 place into the cavities 22 .
  • FIG. 4B is stacking the insulating core materials 20 .
  • the insulating core materials 20 with the uneven surfaces face and contact each other to form air passages 35 .
  • FIG. 4C is placing the stacked insulating core materials 20 inside a bag 30 .
  • the manufacturing processes of the bag 30 are stacking two barrier films and sealing the three sides of the stacked barrier films to form the bag 30 .
  • placing a plastic tube 33 at an opening 34 of the bag 30 The opening 34 of the bag 30 and the tubular wall of the plastic tube 33 can be sealed closely and tightly through heat sealing.
  • the bag 30 forms an opening 34 and a sealed space 32 .
  • the heat sealing set forth above may be done by a heat sealing machine. In the event of the opening 34 of the bag 30 and the plastic tube 33 cannot be sealed tightly through heat sealing, hot melted adhesive may be used to seal the two.
  • FIG. 4D is connecting the opening 34 to a vacuum system 50 to communicate with and vacuumize the sealed space 32 until a desired vacuum degree is reached.
  • FIG. 4E is sealing the opening 34 by heat sealing method. Then the vacuum-insulated panel has finished.
  • the vacuum system 50 vacuumizes the vacuum-insulated panel through the opening 34 , the air passages 35 formed by coupling the pressed grooves on the insulating core materials 20 allow air to deplete quickly from the sealed space 32 to prevent the insulating core materials 20 from adhering to the bag 30 .
  • the vacuum system 50 vacuumizes only the sealed space 32 . Comparing with conventional techniques that vacuumize the vacuum chamber, the invention can greatly reduce vacuum space and shorten vacuumizing time. And the vacuum chamber can be dispensed with to reduce production costs.
  • the main processes involved are forming grooves and heat sealing, and the major equipment required is a simple vacuum system. Thus the whole process is simple, convenient and reliable.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

A method for manufacturing a vacuum-insulated panel includes the steps of: providing at least one insulating core material with uneven surfaces, containing the insulating core materials within a bag with an opening, connecting the opening to a vacuum system, vacuumizing the sealed space of a bag to a desired vacuum degree, and sealing the opening of the bag to complete finished products of the vacuum-insulated panel. The surface of the insulating core materials are formed with grooves and the vacuum system only has to vacuumize the sealed space of bag. Therefore, the vacuumizing time can be reduced and production is simpler, more convenient and reliable.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a method for manufacturing a vacuum-insulated panel, particularly a method that utilizes the grooves design to reduce vacuumizing time during the processes of manufacturing a vacuum-insulated panel. [0001]
    • BACKGROUND OF THE INVENTION
  • A conventional vacuum-insulated panel (as shown in FIG. 1) generally consists of an insulating core material [0002] 1, getters 2 and a barrier film bag 3. The insulating core material 1 usually is selected from woods, sand soil, bricks and tiles, etc. However, the insulating core material 1 made from the above-mentioned materials has a relatively high thermal conduction coefficient and tends to incur thermal conduction. To lower the thermal conduction coefficient, the most commonly used approach is to increase the thickness of the insulating core material 1. Nowadays most producers utilize blowing materials to make the insulating core material 1. As the blowing materials have air bubbles, a vacuumizing process is required to suck the air out to make the air bubbles vacuum. The vacuum portion does not have thermal conduction and convection, thus can reduce thermal conduction coefficient and improve thermal insulation effect of the vacuum-insulated panel.
  • Referring to FIG. 2 for a conventional method that uses blowing materials to produce vacuum-insulated panel, the processes include: first, providing an insulating core material, getters and a barrier film bag, assembling the insulating core material, getters and the barrier film bag to become a semi-finished product, then placing the semi-finished product into a vacuum chamber for vacuumizing until the vacuum chamber reaching a desired vacuum degree. The semi-finished product will also reach the desired vacuum degree. Then heat seal the semi-finished product completely, and then release the vacuum in the vacuum chamber, and remove the sealed vacuum-insulated panel to complete the manufacturing processes. [0003]
  • The method set forth above require costly vacuum chamber. Moreover, the vacuum chamber has a large size and requires a lot of time to reach the desired vacuum degree. As a result, production yield is low and equipment costs are high. [0004]
    • SUMMARY OF THE INVENTION
  • The primary object of the invention is to provide a method that utilizes the grooves design on the insulating core material to reduce the vacuumizing time during manufacturing processes of vacuum-insulated panel. [0005]
  • Another object of the invention is to use heat sealing capability of a barrier film bag and a plastic tube to directly vacuumize the insulating core material without using vacuum chamber thereby make manufacturing process simpler, more convenient and reliable, and also reducing production costs. [0006]
  • To achieve the foregoing objects, the method of the invention includes the steps of: providing at least one of insulating core material and forming uneven surfaces thereon, stacking the insulating core material, placing the stacked insulating core materials in a bag, forming the bag in a pouch fashion with a sealed space except an opening for vacuumizing use, then connecting the opening to a vacuum system to vacuumize the sealed space, finally sealing the opening to complete the production of the vacuum-insulated panel. The insulating core material has grooves to function as air passages when the vacuum system proceeds vacuumizing to the sealed space. The vacuumizing time can be reduced and production is simplified, convenient and more reliable. [0007]
  • The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.[0008]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic view of a conventional vacuum-insulated panel. [0009]
  • FIG. 2 is a flowchart of conventional method for manufacturing a vacuum-insulated panel. [0010]
  • FIG. 3 is a flowchart of manufacturing a vacuum-insulated panel according to the invention. [0011]
  • FIGS. 4A through 4E are schematic views of manufacturing process steps of the invention.[0012]
    • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIG. 3 is the flowchart of manufacturing a vacuum-insulated panel according to the invention. The method includes the steps of: providing at least one insulating core material with [0013] uneven surfaces 10, containing the insulating core material within a bag with an opening 11, vacuumizing the bag through the opening of the bag 12, and sealing the opening of the bag 13, finishing the vacuum-insulated panel 14. The details of the manufacturing processes are elaborated as following contents. The insulating core material is provided with a plurality of open cells formed which has pores in the 10˜100 micron size range, and may be porous blowing materials made from 100% polystyrene. The surfaces of the insulating core material may be formed with grooves by pressing to become uneven surfaces. Moreover, when the insulating core material is formed uneven surfaces, a plurality of cavities is formed on the insulating core material. And a plurality of getters is put on the cavities. Then the insulating core materials are stacked together. Then place the stacked and uneven insulating core material into a bag with an opening. Connect the opening of the bag to a vacuum system to vacuumize the sealed space of the bag. Finally, seal the opening of the bag to complete finished the vacuum-insulated panel.
  • Referring to FIGS. 4A through 4E for an embodiment of the method for manufacturing vacuum-insulated panel according to the invention. [0014]
  • Referring to FIG. 4A is providing a plurality of insulating [0015] core materials 20. The insulating core materials 20 may be porous blowing materials made from 100% polystyrene. Then the surface of the insulating core materials 20 formed V-shaped grooves to become uneven surfaces 21 by pressing, and also formed a plurality of cavities 22. The getters 40 place into the cavities 22.
  • Referring to FIG. 4B is stacking the insulating [0016] core materials 20. The insulating core materials 20 with the uneven surfaces face and contact each other to form air passages 35.
  • Referring to FIG. 4C is placing the stacked insulating [0017] core materials 20 inside a bag 30. The manufacturing processes of the bag 30 are stacking two barrier films and sealing the three sides of the stacked barrier films to form the bag 30. Then placing a plastic tube 33 at an opening 34 of the bag 30. The opening 34 of the bag 30 and the tubular wall of the plastic tube 33 can be sealed closely and tightly through heat sealing. The bag 30 forms an opening 34 and a sealed space 32. The heat sealing set forth above may be done by a heat sealing machine. In the event of the opening 34 of the bag 30 and the plastic tube 33 cannot be sealed tightly through heat sealing, hot melted adhesive may be used to seal the two.
  • Referring to FIG. 4D is connecting the [0018] opening 34 to a vacuum system 50 to communicate with and vacuumize the sealed space 32 until a desired vacuum degree is reached.
  • Referring to FIG. 4E is sealing the opening [0019] 34 by heat sealing method. Then the vacuum-insulated panel has finished.
  • When the [0020] vacuum system 50 vacuumizes the vacuum-insulated panel through the opening 34, the air passages 35 formed by coupling the pressed grooves on the insulating core materials 20 allow air to deplete quickly from the sealed space 32 to prevent the insulating core materials 20 from adhering to the bag 30. Through the manufacturing method of the invention, the vacuum system 50 vacuumizes only the sealed space 32. Comparing with conventional techniques that vacuumize the vacuum chamber, the invention can greatly reduce vacuum space and shorten vacuumizing time. And the vacuum chamber can be dispensed with to reduce production costs. In addition, in the manufacturing of the vacuum-insulated panel, the main processes involved are forming grooves and heat sealing, and the major equipment required is a simple vacuum system. Thus the whole process is simple, convenient and reliable.
  • While the preferred embodiment of the invention has been set forth for the purpose of disclosure, modifications of the disclosed embodiment of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention. [0021]

Claims (10)

What is claimed is:
1. A method for manufacturing a vacuum-insulated panel, comprising:
a. providing at least one insulating core material with uneven surfaces;
b. containing the insulating core material within a bag with an opening;
c. vacuumizing the bag through the opening of the bag; and
d. sealing the opening of the bag.
2. The method of claim 1, wherein the uneven surface of the insulating core material is formed by pressing a plurality of grooves on the insulating core material.
3. The method of claim 1, wherein the grooves are formed V-shaped.
4. The method of claim 1, wherein the insulating core material is provided with a plurality of open cells formed which has pores in the 10˜100 micron size range.
5. The method of claim 1, wherein the insulating core material is selected from 100% polystyrene.
6. The method of claim 1, wherein the insulating core material is provided with a plurality of cavities, and a plurality of getters within the cavities.
7. The method of claim 1, wherein the opening of the bag sealed by heat sealing.
8. The method of claim 1, wherein the manufacturing processes of the bag are stacking two films and sealing the three sides of the stacked films to form the bag.
9. The method of claim 1, wherein the insulating core materials are stacked each other.
10. The method of claim 9, wherein the insulating core materials with the uneven surface contact each other to form air passages.
US10/083,347 2002-02-27 2002-02-27 Method for manufacturing a vacuum-insulated panel Abandoned US20030159404A1 (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050194381A1 (en) * 2004-03-05 2005-09-08 Martin Marietta Materials, Inc. Insulated cargo containers
US20050252164A1 (en) * 2004-03-05 2005-11-17 Zupancich Ronald J Insulated cargo containers
US20050252913A1 (en) * 2004-04-12 2005-11-17 Zupancich Ronald J Insulated cargo container doors
US20060070548A1 (en) * 2004-10-05 2006-04-06 Joseph Seiter Cargo container with insulated floor
US20060108361A1 (en) * 2004-10-08 2006-05-25 Seiter Joseph A Insulated cargo container doors
US20070034110A1 (en) * 2003-02-13 2007-02-15 Zupancich Ronald J Insulated cargo containers
US20120186793A1 (en) * 2011-01-20 2012-07-26 International Business Machines Corporation Integrated device with defined heat flow
WO2015153568A1 (en) 2014-03-31 2015-10-08 Firestone Building Products Co., LLC Process for encapsulating fragile insulation materials within polyisocyanurate
WO2016070071A1 (en) 2014-10-31 2016-05-06 Firestone Building Products Co., LLC Insulation devices including vacuum-insulated capsules
WO2017200905A1 (en) 2016-05-14 2017-11-23 Firestone Building Products Co., LLC Adhesive-backed composite insulation boards with vacuum-insulated capsules
CN107776949A (en) * 2016-08-30 2018-03-09 山东海大机器人科技有限公司 A kind of peritoneal dialysis liquid inner packing automatic bagging equipment
CN111041257A (en) * 2019-12-27 2020-04-21 上海晶维材料科技有限公司 Preparation method of air suction material with surface high-flux air distribution system
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

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7748172B2 (en) 2003-02-13 2010-07-06 Martin Marietta Materials, IInc. Insulated cargo containers
US20070034110A1 (en) * 2003-02-13 2007-02-15 Zupancich Ronald J Insulated cargo containers
US20050252164A1 (en) * 2004-03-05 2005-11-17 Zupancich Ronald J Insulated cargo containers
US20050194381A1 (en) * 2004-03-05 2005-09-08 Martin Marietta Materials, Inc. Insulated cargo containers
US7587984B2 (en) 2004-03-05 2009-09-15 Martin Marietta Materials, Inc. Insulated cargo containers
US20050252913A1 (en) * 2004-04-12 2005-11-17 Zupancich Ronald J Insulated cargo container doors
US7434520B2 (en) 2004-04-12 2008-10-14 Martin Marietta Materials, Inc. Insulated cargo container doors
US20060070548A1 (en) * 2004-10-05 2006-04-06 Joseph Seiter Cargo container with insulated floor
US7353960B2 (en) 2004-10-05 2008-04-08 Martin Marietta Materials, Inc. Cargo container with insulated floor
US20060108361A1 (en) * 2004-10-08 2006-05-25 Seiter Joseph A Insulated cargo container doors
US20120186793A1 (en) * 2011-01-20 2012-07-26 International Business Machines Corporation Integrated device with defined heat flow
US8878071B2 (en) * 2011-01-20 2014-11-04 International Business Machines Corporation Integrated device with defined heat flow
US9406563B2 (en) 2011-01-20 2016-08-02 International Business Machines Corporation Integrated device with defined heat flow
WO2015153568A1 (en) 2014-03-31 2015-10-08 Firestone Building Products Co., LLC Process for encapsulating fragile insulation materials within polyisocyanurate
WO2016070071A1 (en) 2014-10-31 2016-05-06 Firestone Building Products Co., LLC Insulation devices including vacuum-insulated capsules
WO2017200905A1 (en) 2016-05-14 2017-11-23 Firestone Building Products Co., LLC Adhesive-backed composite insulation boards with vacuum-insulated capsules
CN107776949A (en) * 2016-08-30 2018-03-09 山东海大机器人科技有限公司 A kind of peritoneal dialysis liquid inner packing automatic bagging equipment
CN111041257A (en) * 2019-12-27 2020-04-21 上海晶维材料科技有限公司 Preparation method of air suction material with surface high-flux air distribution system
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

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Owner name: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN

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Effective date: 20011226

STCB Information on status: application discontinuation

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