CN210970220U

CN210970220U - Vacuum outer wrapping film material and vacuum heat-insulating material thereof

Info

Publication number: CN210970220U
Application number: CN201921157681.7U
Authority: CN
Inventors: 李焕勇; 马汝军
Original assignee: Insolaxin Suzhou New Material Technology Co ltd
Current assignee: Insolaxin Suzhou New Material Technology Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-07-10
Anticipated expiration: 2029-07-23

Abstract

The utility model provides a vacuum outer coating film material, which comprises a surface layer, a middle layer and a bottom layer; the surface layer is a polypropylene film layer BOPP, the bottom layer is a polyethylene layer PE, and the middle layer is a composite layer of a polyethylene terephthalate layer, a TPO anti-aging layer, a polyester aluminized film layer VMPET, a TPO anti-aging layer and a polyethylene terephthalate layer from top to bottom in sequence; wherein the surface layer, the middle layer and the bottom layer are combined by a bonding agent and then compounded. The film has excellent heat-insulating property and is not easy to damage, the outer surface of the film has heat-insulating and flame-retardant properties, and in addition, the vacuum heat-insulating material prepared by adopting the film material realizes good heat-insulating property and has lower heat conductivity coefficient.

Description

Vacuum outer wrapping film material and vacuum heat-insulating material thereof

Technical Field

The utility model belongs to the field of vacuum insulation material, and relates to a vacuum outer coating film material and a vacuum insulation material thereof.

Background

The vacuum heat insulating material is a novel high-efficiency heat insulating material, is based on the principle of vacuum heat insulation, reduces heat transfer caused by air convection by improving the vacuum degree in the material to the maximum extent, generally consists of a core material and an adsorbent which are coated with a barrier film, wherein the core material is usually made of a porous medium material, the adsorbent is made of a drying agent, and the internal air is discharged under the vacuum state to form a plate.

The requirement for the external barrier film is extremely high due to the requirement of vacuum heat insulation, but the external barrier film is often punctured due to the existence of external reasons such as working environment and the like in many vacuum heat insulation materials at present, so that external air and moisture permeate into the internal barrier film, the service performance is greatly reduced, and meanwhile, the problems that the performance of the domestic barrier film is not enough, the purchase cost is high abroad, the cost of the whole vacuum heat insulation material is high and the like are caused, so that the use requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of producing the vacuum heat-insulating material, the utility model provides a vacuum outer coating film material for the vacuum heat-insulating material, which is a multilayer composite film material and comprises a surface layer, a middle layer and a bottom layer; the surface layer is a polypropylene film layer BOPP, the bottom layer is a polyethylene layer PE, and the middle layer is a composite layer of a polyethylene terephthalate layer, a TPO anti-aging layer, a polyester aluminized film layer VMPET, a TPO anti-aging layer and a polyethylene terephthalate layer from top to bottom in sequence; the surface layer, the middle layer and the bottom layer are combined through a bonding agent and then compounded.

As an improvement, the thickness of the middle layer is 20-100 μm, wherein the thickness of the polyester aluminum-plated film layer VMPET is 1-20 μm, and the thickness of the two layers of polyethylene terephthalate layers arranged at intervals is 15-25 μm.

As an improvement, the thickness of the surface layer is 20-50 μm, and the thickness of the bottom layer is 15-100 μm.

Meanwhile, the vacuum heat-insulating material prepared by the outer wrapping film material is provided, and comprises a core material and the vacuum outer wrapping film material, wherein the core material is wrapped inside the vacuum outer wrapping film material; and a flame-retardant layer is arranged between the core material and the vacuum outer wrapping film material.

As an improvement, the flame-retardant layer is a carbon fiber layer high-pressure flame-retardant layer ammonium polyphosphate flame-retardant layer, the thickness of the flame-retardant layer is 1-10 mu m, and the flame-retardant layer is uniformly distributed on the outer surface of the core material through a binder.

As the improvement, the core material also comprises a getter, and the getter is arranged inside the core material.

As an improvement, the nano silicon dioxide particle is also included and is uniformly mixed in the core material.

Has the advantages that: the utility model provides a vacuum outer coating film material, which comprises a surface layer, a middle layer and a bottom layer; the surface layer is a polypropylene film layer BOPP, the bottom layer is a polyethylene layer PE, and the middle layer is a composite layer of a polyethylene terephthalate layer, a TPO anti-aging layer, a polyester aluminized film layer VMPET, a TPO anti-aging layer and a polyethylene terephthalate layer from top to bottom in sequence; wherein the surface layer, the middle layer and the bottom layer are combined by a bonding agent and then compounded. The film has excellent heat-insulating property, is not easy to damage, and has heat-insulating and flame-retardant properties on the outer surface.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the vacuum insulation material of the present invention.

Fig. 2 is a schematic structural view of the outer coating film material of the present invention.

In the drawings: 1. a surface layer; 2. an intermediate layer; 3. a bottom layer; 4. a polyethylene terephthalate layer; 5. a TPO anti-aging layer; 6. a polyester aluminized film layer VMPET; 7. a core material; 8. coating a membrane material outside in vacuum; 9. a flame retardant layer; 10. a getter; 11. nano silica particles.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

A vacuum outer wrapping film material for a vacuum heat-insulating material is a multi-layer composite film material and comprises a surface layer 1, a middle layer 2 and a bottom layer 3; the surface layer 1 is a polypropylene film layer BOPP, the bottom layer 3 is a polyethylene layer PE, and the middle layer 2 is a composite layer of a polyethylene terephthalate layer, a TPO anti-aging layer, a polyester aluminized film layer VMPET, a TPO anti-aging layer and a polyethylene terephthalate layer; the surface layer 1, the middle layer 2 and the bottom layer 3 are combined through a bonding agent and then compounded.

The thickness of the middle layer 2 is 20-100 μm, wherein the thickness of the polyester aluminized film layer VMPET is 1-20 μm, and the thickness of the two layers of polyethylene terephthalate layers arranged at intervals is 15-25 μm. The thickness of the surface layer 1 is 20-50 μm, and the thickness of the bottom layer 3 is 15-100 μm.

The vacuum heat-insulating material prepared by the outer wrapping film material comprises a core material and the vacuum outer wrapping film material, wherein the core material is wrapped inside the vacuum outer wrapping film material; and a flame-retardant layer is arranged between the core material and the vacuum outer wrapping film material. The flame-retardant layer is a carbon fiber layer high-pressure flame-retardant layer ammonium polyphosphate flame-retardant layer, the thickness of the flame-retardant layer is 1-10 mu m, and the flame-retardant layer is uniformly distributed on the outer surface of the core material through a binder.

And the getter 10 is also included, and the getter 10 is arranged inside the core material 7. And nano silica particles 11 uniformly mixed in the core material 7, wherein the core material 7 comprises glass fibers.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A vacuum overwrap film for vacuum insulation materials, comprising: the membrane material (8) is a multilayer composite membrane material and comprises a surface layer (1), a middle layer (2) and a bottom layer (3); the surface layer (1) is a polypropylene film layer BOPP, the bottom layer (3) is a polyethylene layer PE, and the middle layer (2) is a composite layer of a polyethylene terephthalate layer (4), a TPO anti-aging layer (5), a polyester aluminized film layer VMPET (6), a TPO anti-aging layer (5) and a polyethylene terephthalate layer (4) from top to bottom in sequence; the surface layer (1), the middle layer (2) and the bottom layer (3) are combined through a bonding agent and then compounded.

2. The vacuum envelope film for a vacuum insulation material according to claim 1, wherein: the thickness of the middle layer (2) is 20-100 mu m, the thickness of the polyester aluminized film layer VMPET (6) is 1-20 mu m, and the thicknesses of the two polyethylene terephthalate layers (4) which are arranged at intervals are 15-25 mu m.

3. The vacuum envelope film for a vacuum insulation material according to claim 1, wherein: the thickness of the surface layer (1) is 20-50 μm, and the thickness of the bottom layer (3) is 15-100 μm.

4. A vacuum insulation material produced by using the vacuum overwrap film according to any one of claims 1 to 3, wherein: the vacuum heat-insulating material comprises a core material (7) and a vacuum outer wrapping film material (8), wherein the core material (7) is wrapped inside the vacuum outer wrapping film material (8); a flame-retardant layer (9) is arranged between the core material (7) and the vacuum outer wrapping film material (8).

5. The vacuum insulation material according to claim 4, wherein: the flame-retardant layer (9) is a carbon fiber layer high-pressure flame-retardant layer ammonium polyphosphate flame-retardant layer, the thickness of the flame-retardant layer is 1-10 mu m, and the flame-retardant layer is uniformly distributed on the outer surface of the core material (7) through a binder.

6. The vacuum insulation material according to claim 5, wherein: the core material is characterized by further comprising a getter (10), wherein the getter (10) is arranged inside the core material (7).

7. The vacuum insulation material according to claim 5, wherein: the composite material also comprises nano silicon dioxide particles (11) uniformly mixed in the core material (7), and the core material (7) comprises glass fibers.