CN211260028U

CN211260028U - Barrier film of heat insulation plate and vacuum heat insulation plate prepared from barrier film and capable of reducing heat bridge effect

Info

Publication number: CN211260028U
Application number: CN201921527340.4U
Authority: CN
Inventors: 程学宇; 曹腾宇; 许捷; 余耀; 胡杨
Original assignee: Sichuan Micron Vip New Material Co ltd
Current assignee: Sichuan Micron Vip New Material Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-08-14
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a can reduce the thermal bridge effect, the barrier film of the insulation panels of the reduction thermal bridge effect that has better separation nature simultaneously and the vacuum insulation panels of the reduction thermal bridge effect of preparation thereof. The barrier film of the heat insulation plate comprises a barrier film welding layer, an aluminum foil layer, a barrier film second layer and a barrier film first layer which are sequentially arranged from bottom to top; the vacuum insulation panel for reducing the thermal bridge effect comprises a core material; a heat insulation bag is sleeved outside the core material; the upper surface and the lower surface of the heat insulation bag are provided with barrier films; the barrier film comprises a barrier film welding layer, an aluminum foil layer, a barrier film second layer and a barrier film first layer; both ends of the heat insulation bag are provided with openings; the inner layer of the thermal insulation bag, the thermal insulation layer and the outer layer of the thermal insulation bag all extend to the sealed end of the opening. The barrier film of the heat insulation plate and the vacuum heat insulation plate prepared by the barrier film can effectively improve the heat insulation performance of the whole plate and has longer heat insulation life.

Description

Barrier film of heat insulation plate and vacuum heat insulation plate prepared from barrier film and capable of reducing heat bridge effect

Technical Field

The utility model relates to a vacuum insulation panels, especially a reduce vacuum insulation panels of heat bridge effect.

Background

It is well known that: the vacuum insulation panel is one of vacuum insulation materials, is the most advanced high-efficiency insulation material in the world at present, and is widely used for heat insulation and heat insulation, such as heat insulation of household refrigerators, deep cooling freezers, electric water heaters, freezers, refrigerated containers, building walls and the like.

The vacuum insulation panel mainly comprises a core material, a drying agent or a getter and an obstructing bag, and the manufacturing method comprises the following steps: and putting the core material with the low heat conduction and the porous structure, the drying agent or the getter into the barrier bag, vacuumizing and sealing. The heat preservation principle is as follows: the core material has low heat conduction characteristic; vacuumizing to reduce air convection; the multi-layer composite barrier film used by the barrier bag can effectively prevent the permeation of water and gas outside the vacuum insulation panel. The composite barrier film of the vacuum insulation panel is a key factor for continuously keeping (low vacuum) low heat conduction. The traditional process has 3 modes:

1. the double-sided aluminum foil film has excellent barrier property because the barrier film contains a layer of metal aluminum, but has better aluminum heat transfer, thereby increasing the heat bridge effect on the surface of the vacuum heat insulation plate (the heat is transferred from the edge of the vacuum heat insulation plate along the barrier film, and the heat insulation performance of the whole plate is reduced);

2. the type of the cathode-anode film, i.e. one aluminum foil film and one vapor deposited film (without a separate aluminum layer, vapor deposited aluminum on PET or EVOH): the heat bridge effect of the surface of the vacuum heat insulation plate is reduced (the heat insulation performance of the whole plate is improved), but the barrier property of the evaporation film is poor, the loss of the vacuum degree of the vacuum heat insulation plate is accelerated, and the heat insulation service life of the vacuum heat insulation plate is shortened;

3. the double-sided film is evaporated, so that the heat bridge effect of the surface of the vacuum heat insulation plate is reduced to a greater extent (the heat insulation performance of the whole plate is greatly improved), but the heat insulation life of the vacuum heat insulation plate is also greatly reduced. In the traditional technology, the barrier property (heat preservation life) and the heat bridge effect (whole plate heat insulation performance) are difficult to simultaneously obtain.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can reduce the heat bridge effect, the barrier film of the insulation panels that has better separation nature simultaneously and the vacuum insulation panels of the reduction heat bridge effect of preparation thereof are provided.

The utility model provides a technical scheme that its technical problem adopted is: the barrier film of the heat insulation plate comprises a barrier film welding layer, an aluminum foil layer, a barrier film second layer and a barrier film first layer which are sequentially arranged from bottom to top; the barrier film welding layer, the barrier film second layer and the barrier film first layer extend to the sealing end of the barrier film; the length and the width of the aluminum foil layer are both smaller than those of the barrier film.

A vacuum insulation panel for reducing heat bridge effect, which is prepared by adopting a barrier film of an insulation panel, comprises a core material; the outer side of the core material is sleeved with a separation bag; the upper surface and the lower surface of the barrier bag are provided with barrier films; the barrier film comprises a barrier film welding layer, an aluminum foil layer, a barrier film second layer and a barrier film first layer; the barrier film welding layer, the aluminum foil layer, the barrier film second layer and the barrier film first layer are sequentially arranged from inside to outside;

both ends of the barrier bag are provided with areas without aluminum foil; the barrier film welding layer, the barrier film second layer and the barrier film first layer extend to the sealed end of the aluminum foil-free area; the aluminum foil layers extend to two ends of the core material; and the barrier film welding layer, the barrier film second layer and the barrier film first layer welding sealing core material extend to the sealing end of the aluminum foil-free area.

Further, one end of the core material is provided with a getter or a drying agent.

Preferably, the second layer of the barrier film is made of PET or aluminized PET.

Preferably, the barrier film welding layer is made of PE or CPP.

Preferably, the first layer of the barrier film is made of PA or PET.

The utility model has the advantages that: reduce vacuum insulation panels of heat bridge effect, when compound, on the effectual use width, the aluminium foil layer is than each more narrow more than 10mm in all the other composite bed both sides, seals the requirement of width according to vacuum insulation panels separation bag, carries out appropriate adjustment. When the barrier film is made into a three-sided sealed bag, the seals on both sides fall to places without aluminum foil, thus not overlapping into a thermal bridge. Meanwhile, more than 90% of the area of the two surfaces of the vacuum insulation panel still contains the aluminum foil layer, and compared with an evaporation film, the vacuum insulation panel has higher barrier property; the two side aluminum foils are not overlapped, and the heat transfer of the 'heat bridge effect' is reduced by at least 60 percent compared with the aluminum foil film, so that the whole plate heat insulation performance is higher. Therefore, the vacuum insulation panel capable of reducing the heat bridge effect can effectively improve the heat insulation performance of the whole panel and has a long heat preservation life.

Drawings

Fig. 1 is a schematic structural diagram of a vacuum insulation panel for reducing a thermal bridge effect according to an embodiment of the present invention;

the following are marked in the figure: 1-core, 2-barrier film welded layer, 3-aluminum foil layer, 4-barrier film second layer, 5-barrier film first layer, 6-desiccant/getter, 7-aluminum foil free region.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the barrier film of the heat insulation plate of the present invention comprises a barrier film welding layer 2, an aluminum foil layer 3, a barrier film second layer 4, and a barrier film first layer 5, which are sequentially arranged from bottom to top; and the barrier film welding layer 2, the barrier film second layer 4 and the barrier film first layer 5 extend to the sealed end of the barrier film; the length and width of the aluminum foil layer 3 are both smaller than those of the barrier film.

The vacuum insulation panel for reducing the heat bridge effect is prepared by adopting the barrier film of the insulation panel and comprises a core material 1; the outer side of the core material 1 is sleeved with a separation bag; the upper surface and the lower surface of the barrier bag are provided with barrier films; the barrier film comprises a barrier film welding layer 2, an aluminum foil layer 3, a barrier film second layer 4 and a barrier film first layer 5;

the barrier film welding layer 2, the aluminum foil layer 3, the barrier film second layer 4 and the barrier film first layer 5 are sequentially arranged from inside to outside;

both ends of the barrier bag are provided with areas 7 without aluminum foil; the barrier film welding layer 2, the barrier film second layer 4 and the barrier film first layer 5 extend to the sealed end of the aluminum foil-free area 7; the aluminum foil layers 3 extend to two ends of the core material 1; and the barrier film welding layer 2, the barrier film second layer 4 and the barrier film first layer 5 extending to the sealed end of the aluminum foil-free area 7 are welded with the sealing core material 1.

Specifically, the barrier film second layer 4 adopts a vapor deposition film PET or an aluminized PET; the barrier film welding layer 2 is made of PE or CPP; the first layer 5 of the barrier film is made of PA or PET.

Reduce vacuum insulation panels of heat bridge effect, when compound, on the effectual use width, the aluminium foil layer is than each more narrow more than 10mm in all the other composite bed both sides, seals the requirement of width according to vacuum insulation panels separation bag, carries out appropriate adjustment. When the barrier film is made into a three-sided sealed bag, the seals on both sides fall to places without aluminum foil, thus not overlapping into a thermal bridge. Meanwhile, more than 90% of the area of the two surfaces of the vacuum insulation panel still contains the aluminum foil layer, and compared with an evaporation film, the vacuum insulation panel has higher barrier property; the two side aluminum foils are not overlapped, and the heat transfer of the 'heat bridge effect' is reduced by at least 60 percent compared with the aluminum foil film, so that the whole plate heat insulation performance is higher. Therefore, the vacuum insulation panel capable of reducing the heat bridge effect can effectively improve the heat insulation performance of the whole panel and has a long heat preservation life.

In order to avoid that the barrier bag has a small amount of gas and moisture in the interior after being sealed, a getter or desiccant 6 is further arranged at one end of the core material 1.

Claims

1. A barrier film of a heat insulating plate is characterized in that: comprises a barrier film welding layer (2), an aluminum foil layer (3), a barrier film second layer (4) and a barrier film first layer (5) which are arranged from bottom to top in sequence; and the barrier film welding layer (2), the barrier film second layer (4) and the barrier film first layer (5) all extend to the sealed end of the barrier film; the length and the width of the aluminum foil layer (3) are both smaller than those of the barrier film.

2. A vacuum insulation panel having reduced thermal bridge effects made using a barrier film for insulation panels according to claim 1, wherein: comprising a core material (1); the outer side of the core material (1) is sleeved with a separation bag; the upper surface and the lower surface of the barrier bag are provided with barrier films; the barrier film comprises a barrier film welding layer (2), an aluminum foil layer (3), a barrier film second layer (4) and a barrier film first layer (5);

the barrier film welding layer (2), the aluminum foil layer (3), the barrier film second layer (4) and the barrier film first layer (5) are sequentially arranged from inside to outside;

both ends of the barrier bag are provided with areas (7) without aluminum foil; the barrier film welding layer (2), the barrier film second layer (4) and the barrier film first layer (5) extend to the sealed end of the aluminum foil-free area (7); the aluminum foil layers (3) extend to two ends of the core material (1); and the barrier film welding layer (2), the barrier film second layer (4) and the barrier film first layer (5) which extend to the sealing end of the aluminum foil-free area (7) are welded with the sealing core material (1).

3. A vacuum insulation panel for reducing thermal bridge effects according to claim 2 wherein: one end of the core material (1) is provided with a getter or a drying agent (6).

4. A vacuum insulation panel for reducing thermal bridge effects according to claim 2 or 3 wherein: the second layer (4) of the barrier film is made of PET or aluminized PET.

5. The vacuum insulation panel for reducing thermal bridge effect according to claim 4 wherein: the barrier film welding layer (2) is made of PE or CPP.

6. The vacuum insulation panel for reducing thermal bridge effects of claim 5, wherein: the first layer (5) of the barrier film is made of PA or PET.