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KR101677374B1 - Vacuum Insulation Panel - Google Patents

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Publication number
KR101677374B1
KR101677374B1 KR1020150089685A KR20150089685A KR101677374B1 KR 101677374 B1 KR101677374 B1 KR 101677374B1 KR 1020150089685 A KR1020150089685 A KR 1020150089685A KR 20150089685 A KR20150089685 A KR 20150089685A KR 101677374 B1 KR101677374 B1 KR 101677374B1
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KR
South Korea
Prior art keywords
inorganic
vacuum insulation
fused
layer
core
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KR1020150089685A
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Korean (ko)
Inventor
장성욱
김동래
이남수
원정환
강성호
Original Assignee
주식회사 케이씨씨
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Priority to KR1020150089685A priority Critical patent/KR101677374B1/en
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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
    • 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
    • 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
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

The present invention provides a sealing member comprising a core member and a sealing member disposed between the core member and including a pair of stack members configured to surround the core member, wherein each of the pair of stack members sequentially stacks Wherein the pair of laminated bodies includes an inner side portion surrounding the core material and an outer peripheral edge portion connected to the inner side portion, wherein the fused layers of one laminate are opposed to each other at the peripheral edge portion, Forming a non-folding fused end face to face with the fused layer of the other stacked body, and the fused layer corresponding to the inner side in each of the stacked bodies is thermally fused to the core material And a vacuum insulator.

Description

Vacuum Insulation Panel [0002]

The present invention relates to a vacuum insulator, and more particularly, to a vacuum insulator having excellent barrier properties, durability and impact resistance while minimizing thermal crosslinking.

Vacuum insulation material is a material that shows the excellent heat insulation performance more than five times compared with existing oil / inorganic insulation materials by blocking the convection inside the insulation by vacuuming the inside of the insulation.

As shown in Figs. 1A and 1B, a vacuum insulator is generally composed of a core material 12, a sealing member 11 of a multilayered film as a sheathing material, And a gas adsorbent (getter) 13 for removing the components.

In order to easily insert the core member 12 into the sealing member 11, the sealing member 11 is made 1 to 80 mm larger than the core member size. Due to this difference in size, the sealing member 11 The heat-welded edge joint D1 remains as a fin. Conventionally, these fin portions are folded in a bag folding manner for the continuous installation of the vacuum insulation material. In the case of a quadrangular vacuum insulator, pins are formed on all four sides. In general, in the method of manufacturing a vacuum insulator, the pins of all four sides are folded in an envelope folding manner. , And cracks are generated at each corner portion of double folding, resulting in deterioration of long-term durability due to micro leakage and moisture permeation and high defect rate. In order to solve such a problem, Korean Patent Laid-Open Publication No. 2001-0013067 discloses a structure in which only two spaced apart sides are folded as shown in FIG. 1B and an end portion thereof is fixed by a tape 14, but this is not a sufficient solution It is true.

Korean Patent Publication No. 2012-0013067

The present invention provides a vacuum insulation material having excellent barrier properties, durability and impact resistance while minimizing thermal bridge phenomena.

On the other hand,

Core material, and

And a sealing member including a pair of stacked members positioned to sandwich the core member and surround the core member,

Wherein each of the pair of laminated bodies includes a fusion layer, a barrier layer and a protective layer which are sequentially laminated on the core material,

Wherein the pair of laminated bodies includes an inner side portion surrounding the core member and an outer peripheral edge portion connected to the inner side portion, wherein in the outer peripheral edge portion, the fused layers of one laminate face each other with the fused layers of the other laminate facing each other And a non-folding fused end portion is thermally fused to form a fusion-bonded layer corresponding to the inner portion of each of the stacked bodies, and the fused layer is thermally fused to the core material.

In one embodiment of the present invention, thermal fusion of the fusing layer and the core can be performed by further heat-treating the vacuum insulation at a temperature of 110 to 200 DEG C for 0.1 to 30 minutes.

In one embodiment of the present invention, the non-folding fused end of the outer edge portion is formed by thermally fusing the seal member such that the seal member has a width larger by 1 to 30 mm in each of the lateral direction and the longitudinal direction than the core member A part of the rim end portion of the sealing member may be cut to be formed as an edge cutting fused end portion.

The vacuum insulator of the present invention can simultaneously ensure barrier properties, durability and impact resistance while minimizing thermal crosslinking.

1A and 1B are diagrams showing a structure of a vacuum insulator according to the prior art, wherein FIG. 1A is a perspective view showing a state before folding, and FIG. 1B is a sectional view taken along line AA of FIG. 1A in a state after folding .
2 is a perspective view showing a structure of a vacuum insulator according to an embodiment of the present invention.
3A and 3B are a cross-sectional view and a partially enlarged cross-sectional view of a vacuum insulator according to an embodiment of the present invention.
4 is a plan view of a vacuum insulator according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail.

FIG. 2 is a perspective view showing the structure of a vacuum insulator according to an embodiment of the present invention, and FIGS. 3a and 3b are a sectional view and a partially enlarged sectional view of a vacuum insulator according to an embodiment of the present invention, FIG. 3B is a cross-sectional view taken along the line AA in FIG. 2, showing a state in which the distal end portion is cut off after thermal fusion. FIG. 3B shows a detailed configuration of the laminated body of the sealing member As shown in Fig.

A vacuum insulator 100 according to an embodiment of the present invention has a core member 120, a sealing member 110 surrounding the core member 120, and a gas- And a gas adsorbent 130 for the gas.

The sealing member 110 includes a pair of stacked bodies, and each of the stacked bodies is formed by sequentially stacking the fuse layer 113, the barrier layer 112, and the protective layer 111, as shown in FIG. 3B .

Each of the stacked bodies having such a configuration is positioned so that the protective layer 111 faces outwardly with the core member 120 as a center and the outer edge portions D1 of the stacked bodies are thermally fused with each other, It can be in the form of an envelope with a non-folding structure. In one embodiment, the pair of stacks includes an inner portion D0 surrounding the core 120 and an outer edge D1 connected to the inner portion D0. In the outer edge D1, And the non-folding fused end portion 110e is formed by mutually thermally fusing the fusing layer 113 of the stacked body of the laminated body of the laminated body facing the fusing layer 113 of the other stacked body facing each other, The fusing layer 113 corresponding to the inner portion D0 in each of the stacks is thermally fused to the core 120 to mitigate the separation stress applied to the non-folding fused end 110e Reference numeral 115 '). Thus, the vacuum heat insulating material 100 according to an embodiment of the present invention is thermally welded to the inner edge D0 as well as the outer edge portion D1, so that the entire vacuum heat insulating material is thermally fused.

The non-folding fused end 110e of the peripheral edge portion D1 may be formed in such a manner that the size of the sealing member 110 is larger than that of the core member 120 in the horizontal and vertical directions (A portion indicated by the reference character 'xd') of the sealing member 110 after heat fusion so as to have an additional width (a portion to be left after cutting indicated by the reference symbol 'nd') of a predetermined size or less, (Part indicated by "xd") of the edge portion of the laminated body constituting the sealing member 110 after the thermal fusion is cut off, the laminated body 110 may be formed as an edge cutting fused end portion 115e, The edge cutting edge portion 115e having the width of 'nd' is adhered to the outer edge portion D1 of the outer peripheral edge portion D1 by thermal fusion, and furthermore, the inner side portion D0 of the laminate is heat- So that in the entire vacuum insulation material The sealing member can be maintained in a firmly adhered state, and therefore, even if the folding portion is removed, it is possible to maintain the sealed vacuum state in order to improve the thermal bridging performance.

In one embodiment, the edge cutting (width 'xd') of the non-folding fused end 110e at the peripheral edge portion D1 is performed at the edge cutting fused end 115e ) Is 1 to 30 mm. Specifically, as shown in FIG. 4, the sealing member 110 may be sized so that the size of the sealing member 110 is larger by 1 to 30 mm in the lateral and longitudinal directions than the core member 120, respectively.

In the case of a conventional vacuum insulator, the sealing member releases the product in a state where the outer edge portion surrounding the core member is folded. In this folded portion, thermal bridging may occur. In the present invention, the folding portion of the outer edge portion of the sealing member, which may cause heat transfer, is removed by cutting to prevent heat bridge phenomenon.

In the embodiment of the present invention, the fusing layer 113 and the core material 120 are thermally fused by adding the vacuum insulation material 100 manufactured according to a conventional method at a temperature of 110 to 200 DEG C for 0.1 to 30 minutes Followed by heat treatment. This heat treatment makes it possible to keep the vacuum insulator 100 in a vacuum state even if the outer edge portion D1 of the sealing member 110 is cut so as to have only the width nd of the edge cutting fused end portion 115e, It is possible to prevent the deterioration of the heat insulating material when the range is satisfied, thereby lowering the product defective rate and maintaining the durability.

In one embodiment of the present invention, the protective layer 111 of the sealing member 110 protects the barrier layer 112 as an outermost layer and prevents the vacuum insulation material 100 from being damaged from external impact or scratches do. The protective layer 111 may be composed of one or more layers, and each layer may be formed of a material selected from the group consisting of nylon, polyethylene terephthalate (PET), inorganic-vapor-deposited polyethylene terephthalate, oriented polypropylene (OPP), ethylene vinyl alcohol Inorganic-vapor-deposited polyvinyl alcohol (PVOH), omocer (ORMOCER), and inorganic-deposited omocer (ORMOCER).

The inorganic material used for the deposition may be aluminum (Al), aluminum oxide (AlO x ), silicon (Si) or silicon oxide (SiO x ), and the deposition thickness may be 100 to 2000 Å, specifically 200 to 1000 Å, But is not limited thereto.

The thickness of the protective layer 111 may be a thickness, for example, 5 to 30 占 퐉, specifically 10 to 25 占 퐉, which is typically applied to a vacuum insulation material without particular limitation.

The blocking layer 112 serves to prevent the vacuum insulating material from flowing. As such a barrier layer 112, an inorganic-deposited film, an aluminum thin film, or an ORMOCER may be used, and the inorganic-deposited film may be an inorganic-deposited polyethylene terephthalate, an inorganic-deposited ethylene vinyl alcohol, Alcohol (PVOH) and inorganic-deposition oleocer (ORMOCER).

The inorganic material used for the deposition may be aluminum (Al), aluminum oxide (AlO x ), silicon (Si) or silicon oxide (SiO x ), and the deposition thickness may be 100 to 2000 Å, specifically 200 to 1000 Å, But is not limited thereto.

In addition, the inorganic-vapor-deposited film may be provided in accordance with at least one of the cost and the desired characteristics of the final product.

The thickness of the barrier layer 112 may be a thickness, for example, 5 to 30 占 퐉, specifically 10 to 25 占 퐉, which is typically applied to a vacuum insulation material without particular limitation.

The fused layer 113 is the innermost layer, and when the sealing member 110 is applied to the vacuum insulating material as a sheath material, heat sealing is enabled between the sheathing material and the sealing material is in close contact with the core material 120 to serve as a sealant. The material of the fusing layer 113 is not particularly limited as long as it is ordinarily used for a vacuum insulation material. Specifically, a linear low density polyethylene (LLPDE) film or a cast polypropylene (CPP) film can be used.

The thickness of the fusing layer 113 may be a thickness that is typically applied to a vacuum insulation material, for example, 20 to 100 占 퐉, specifically 30 to 75 占 퐉, without particular limitation.

In an embodiment of the present invention, the sealing member 110 may further include additional layers that impart specific properties as needed. Further, each interlaminar bond in the multi-layer structure can be carried out using an adhesive commonly used in the art, for example, a urethane adhesive. There is no particular limitation on the bonding method, and the vacuum insulator 100 may be of a type commonly used, for example, gravure, direct, reverse, dry lamination or the like.

Glass wool may be used as the core material 120 of the vacuum insulation material according to an embodiment of the present invention. As the gas adsorbent 130, CaO (hard lime), metal powder, mixture of calcium oxide and metal powder, silica gel or zeolite may be used However, the present invention is not limited thereto.

The vacuum insulation material according to one embodiment of the present invention can be produced by using the conventional vacuum insulation material manufacturing method as it is or by modifying it appropriately.

Since the vacuum insulation material according to one embodiment of the present invention has a long-term durability over 30 years, it can be used not only for a refrigerator but also as a vacuum insulation material for construction requiring high reliability. That is, the vacuum insulation material according to an embodiment of the present invention can be used as a building material for insulation construction such as a roof, a ceiling, a wall, and a floor, thereby providing high efficiency insulation performance, thereby minimizing energy consumption.

Hereinafter, the present invention will be described more specifically with reference to Examples, Comparative Examples and Experimental Examples. It should be apparent to those skilled in the art that these examples, comparative examples and experimental examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

Example  1 to 4 and Comparative Example  1 to 4

A bag member composed of the layers shown in Table 1 was prepared. At this time, the adhesion of each layer was carried out by the dry lamination method using a two-component urethane adhesive under the same conditions.

Subsequently, a vacuum insulator was manufactured under the high vacuum of 10 -4 torr using a mixture of the lump and the metal powder as the sealing material and the gas adsorbent, respectively, as glass wool and sheath material as the core material, and then heat treatment was performed. At this time, the heat treatment conditions are as shown in Table 1 below.

Subsequently, the outer edge portion of the vacuum insulator was cut so that the size of the sealing member was 10 mm larger than the inner core member in the lateral and longitudinal directions, respectively.

The vacuum insulator thus produced was evaluated for the following items, and the results are shown in Table 1 below.

- Product Failure Rate (%)

- initial thermal conductivity (W / mK)

- Durability (1): Thermal conductivity after leaving for 50 days at 100 ° C (= 10 years durability)

- Durability (2): Thermal conductivity after leaving 150 days at 100 ℃ (= 30 years durability)

Figure 112015061189083-pat00001

VmPET: Aluminum-deposited polyethylene terephthalate (PET)

VmEVOH: aluminum-deposited ethylene vinyl alcohol (EVA)

Ny: Nylon

LLDPE: linear low density polyethylene

As can be seen from Table 1, the vacuum heat insulators of Examples 1 to 4, in which the peripheral edge portions were cut after the heat treatment, had low initial thermal conductivity, low product defect rate, and excellent durability. On the other hand, the vacuum insulation materials of Comparative Examples 2 to 4, to which the heat treatment process was not applied, were not able to maintain a vacuum state as soon as they were cut due to lack of heat fusion, and thus their performance as a vacuum insulation material was lost. On the other hand, in the case of Comparative Example 1, since the excessive heat treatment process was performed, it was confirmed that the sealing member was damaged and the product defect rate was high and the durability was low.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Do. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the actual scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

Core material, and
And a sealing member including a pair of stacked members positioned to sandwich the core member and surround the core member,
Wherein each of the pair of laminated bodies includes a fusion layer, a barrier layer and a protective layer which are sequentially laminated on the core material,
Wherein the pair of stacked bodies includes an inner side portion surrounding the core member and an outer peripheral edge portion connected to the inner side portion, wherein in the outer edge portion, the fused layers of one stacked body face each other and the fused layers of the other stacked body face each other Thermally welded to form a non-folding fused end,
Wherein the fusion layer corresponding to the inner side in each of the laminated bodies is thermally fused to the core material,
The thermal fusion of the fusing layer and the core material is performed by further heat-treating the vacuum insulation material at a temperature of 110 to 200 ° C for 0.1 to 30 minutes,
The non-folding fused end of the outer edge portion may be formed by cutting a part of the edge of the edge of the sealing member after thermal fusion so that the size of the sealing member has a width larger by 1 to 30 mm each in the transverse direction and the longitudinal direction than the core member And is formed as an edge cutting fused end portion of a vacuum insulation material for construction. delete delete The method of claim 1, wherein the protective layer is comprised of one or more layers, wherein each layer is selected from the group consisting of nylon, polyethylene terephthalate (PET), inorganic-deposited polyethylene terephthalate, oriented polypropylene (OPP), ethylene vinyl alcohol (EVOH) A vacuum insulation material selected from the group consisting of inorganic-vapor-deposited ethylene vinyl alcohol, polyvinyl alcohol (PVOH), inorganic-deposited polyvinyl alcohol (PVOH), ORMOCER and inorganic-deposited OMOERER. The vacuum insulator for construction according to claim 4, wherein the inorganic material is aluminum (Al), aluminum oxide (AlO x ), silicon (Si) or silicon oxide (SiO x ). The vacuum insulation material according to claim 1, wherein the barrier layer is an inorganic-vapor deposition film, an aluminum thin film or an ORMOCER. 7. The method of claim 6, wherein the inorganic-vapor deposited film is selected from the group consisting of inorganic-vapor deposited polyethylene terephthalate, inorganic-vapor deposited ethylene vinyl alcohol, inorganic-vapor deposited polyvinyl alcohol (PVOH) and inorganic- More than one vacuum insulation for construction. The vacuum insulation material according to claim 7, wherein the inorganic material is aluminum (Al), aluminum oxide (AlO x ), silicon (Si) or silicon oxide (SiO x ). The vacuum insulation material according to claim 1, wherein the fusing layer is a linear low density polyethylene (LLPDE) film or a cast polypropylene (CPP) film. delete
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004239430A (en) * 2003-11-17 2004-08-26 Matsushita Refrig Co Ltd Vacuum heat insulating material manufacturing method
KR100865199B1 (en) * 2004-12-07 2008-10-23 파나소닉 주식회사 Vacuum heat insulating material, method of producing vacuum heat insulating material, and heat insulating box body using vacuum heat insulating material
KR20110000057A (en) * 2009-06-26 2011-01-03 (주)엘지하우시스 Entrance door containing vacuum insulation and polyurethan form
KR20120013067A (en) 2010-08-04 2012-02-14 (주)엘지하우시스 Vacuum insulation panel comprising less than 2 folded fin and method of manufacturing thereof
JP2014141055A (en) * 2012-12-25 2014-08-07 Konica Minolta Inc Gas barrier film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004239430A (en) * 2003-11-17 2004-08-26 Matsushita Refrig Co Ltd Vacuum heat insulating material manufacturing method
KR100865199B1 (en) * 2004-12-07 2008-10-23 파나소닉 주식회사 Vacuum heat insulating material, method of producing vacuum heat insulating material, and heat insulating box body using vacuum heat insulating material
KR20110000057A (en) * 2009-06-26 2011-01-03 (주)엘지하우시스 Entrance door containing vacuum insulation and polyurethan form
KR20120013067A (en) 2010-08-04 2012-02-14 (주)엘지하우시스 Vacuum insulation panel comprising less than 2 folded fin and method of manufacturing thereof
JP2014141055A (en) * 2012-12-25 2014-08-07 Konica Minolta Inc Gas barrier film

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