CN216192013U - Heat insulation film and air pillow type film structure - Google Patents
Heat insulation film and air pillow type film structure Download PDFInfo
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- CN216192013U CN216192013U CN202122399113.1U CN202122399113U CN216192013U CN 216192013 U CN216192013 U CN 216192013U CN 202122399113 U CN202122399113 U CN 202122399113U CN 216192013 U CN216192013 U CN 216192013U
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Abstract
The utility model relates to a heat insulation film and an air pillow type film structure, wherein the heat insulation film comprises an ethylene-tetrafluoroethylene copolymer film and a light selective coating attached to any surface of the ethylene-tetrafluoroethylene copolymer film, the light transmittance of the light selective coating in a wave band of 0.4-0.78 mu m is more than 40%, and the light blockage rate in a wave band of 0.78-2.5 mu m is more than or equal to 90%. This air pillow formula membrane structure includes the thermal-insulated membrane of one deck and at least one deck printing opacity membrane, and thermal-insulated membrane and the range upon range of setting of printing opacity membrane, and be provided with the airtight air chamber that can hold gas between the adjacent rete, the light selectivity coating in the thermal-insulated membrane sets up towards the printing opacity membrane. The air pillow type film structure comprising the heat insulation film can meet the standards of a three-star green building when the visible light transmittance is more than or equal to 40 percent and the full-wave band solar light transmittance is less than or equal to 24 percent, and the air pillow type film structure is used in buildings and the like.
Description
Technical Field
The utility model relates to the technical field of energy conservation, in particular to a heat insulation film and an air pillow type film structure.
Background
When the indoor daylighting of a building is improved, the roof with the ethylene-tetrafluoroethylene copolymer (ETFE) membrane structure inevitably enables light with a wave band of 0.78-2.5 mu m in sunlight to enter the room, so that the indoor temperature is continuously increased, and the energy consumption for cooling is increased.
At present, there are two methods for slowing down the continuous rise of indoor temperature, one is to arrange a multilayer air pillow in an ethylene-tetrafluoroethylene copolymer film structure, and the other is to print silver spots on the surface of the ethylene-tetrafluoroethylene copolymer film, however, both of the above two methods are difficult to make the ethylene-tetrafluoroethylene copolymer film structure meet the performance requirements that the light transmittance in the wave band of 0.4 μm to 0.78 μm is more than or equal to 40%, and the solar light transmittance in the wave band of 0.3 μm to 2.5 μm is less than or equal to 24%, so that the building is difficult to achieve the energy-saving requirement of the three-star grade green building standard.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a heat insulating film and an air-pillow type film structure including the same, in which the light transmittance in the 0.4 μm to 0.78 μm band is 40% or more and the solar light transmittance in the 0.3 μm to 2.5 μm band is 24% or less, and which can satisfy the three-star level green building standards when used in buildings and the like.
The utility model provides a heat insulation film, which comprises an ethylene-tetrafluoroethylene copolymer film and a light selective coating attached to any surface of the ethylene-tetrafluoroethylene copolymer film, wherein the light transmittance of the light selective coating in a wave band of 0.4-0.78 [ mu ] m is more than 40%, and the light blocking rate in a wave band of 0.78-2.5 [ mu ] m is more than or equal to 90%.
In one embodiment, the surface tension of the surface of the ethylene-tetrafluoroethylene copolymer film for attaching the light-selective coating is greater than or equal to 60 dynes.
In one embodiment, the thickness of the light selective coating is from 2 μm to 30 μm.
In one embodiment, the ethylene-tetrafluoroethylene copolymer film has a thickness of 100 μm to 500 μm.
In one embodiment, the ethylene-tetrafluoroethylene copolymer film has a light blocking ratio of 75% or more in a 0.3 μm to 0.4 μm wavelength band, or the light selective coating has a light blocking ratio of 90% or more in a 0.3 μm to 0.4 μm wavelength band.
The utility model provides an air pillow formula membrane structure, includes that the one deck is like foretell thermal-insulated membrane and at least one deck printing opacity membrane, thermal-insulated membrane with the lamination of printing opacity membrane sets up, and is provided with the airtight air chamber that can hold gas between the adjacent rete, in the thermal-insulated membrane the light selectivity coating towards the printing opacity membrane sets up.
In one embodiment, the light transmissive film has a light transmission of greater than or equal to 85% in the 0.4 μm to 0.78 μm wavelength band.
In one embodiment, the light-transmitting film has a light blocking ratio of 75% or more in a wavelength band of 0.3 μm to 0.4 μm.
In one embodiment, the light transmissive film has a tensile strength of greater than or equal to 40 MPa;
and/or the elongation at break of the light-transmitting film is greater than or equal to 250%.
In one embodiment, the light transmissive film is an ethylene-tetrafluoroethylene copolymer film, a poly-4-methyl-1-pentene film, a polyethylene terephthalate film, a polyethylene naphthalate film, a polyethylene terephthalate 1, 4-cyclohexanedimethanol film, a polyethylene terephthalate-acetate film, a polymethyl methacrylate film, a polycarbonate film, an acrylonitrile styrene copolymer film, an acrylonitrile-butadiene-styrene terpolymer film, a polyvinyl chloride film, a polypropylene film, a polyethylene film, an ethylene-vinyl acetate copolymer film, an ethylene-methyl acrylate copolymer film, a polyhydroxyethyl methacrylate film, a polytetrafluoroethylene film, a perfluoroethylene propylene copolymer film, a perfluoroethylene-propylene copolymer film, a polyethylene-co-polymer film, a polyethylene-co-polymer film, a polyethylene-polymer film, a copolymer film, a polymer, polyperfluoroalkoxy resin film, polychlorotrifluoroethylene film, ethylene-chlorotrifluoroethylene copolymer film, polyvinylidene fluoride film, polyvinyl fluoride film, thermoplastic polyurethane film, polystyrene film.
In one embodiment, the light transmissive film has a thickness of 100 μm to 500 μm.
In one embodiment, the light-transmitting film includes a first light-transmitting film and a second light-transmitting film, wherein the heat insulating film, the first light-transmitting film, and the second light-transmitting film are sequentially stacked, a first sealed gas chamber capable of containing gas is disposed between the heat insulating film and the first light-transmitting film, a second sealed gas chamber capable of containing gas is disposed between the first light-transmitting film and the second light-transmitting film, and the light-selective coating in the heat insulating film is disposed facing the first light-transmitting film;
or, first printing opacity membrane thermal-insulated membrane and second printing opacity membrane stacks gradually the setting, first printing opacity membrane with be provided with the first airtight air chamber that can hold gas between the thermal-insulated membrane, thermal-insulated membrane with be provided with the airtight air chamber of second that can hold gas between the second printing opacity membrane, in the thermal-insulated membrane the light selectivity coating towards first printing opacity membrane or second printing opacity membrane sets up.
In the heat insulation film, the light selective coating can selectively enable light with a wave band of 0.4-0.78 mu m in sunlight to transmit, and simultaneously can block light with a wave band of 0.78-2.5 mu m in sunlight, so that the light transmittance of the heat insulation film in the wave band of 0.4-0.78 mu m is more than 40%, and the light blocking rate in the wave band of 0.78-2.5 mu m is more than or equal to 90%. Furthermore, the light transmittance of the air pillow type film structure comprising the heat insulation film is more than or equal to 40% in a wave band of 0.4-0.78 μm, and the solar light transmittance in a wave band of 0.3-2.5 μm is less than or equal to 24%. Therefore, when the air pillow type membrane structure is used for buildings and the like, indoor lighting of the buildings and the like can be effectively improved, the indoor temperature rise amplitude of the buildings and the like is reduced, the cooling energy consumption is reduced, and the buildings can meet the energy-saving requirement of the three-star level green building standard.
Drawings
FIG. 1 is a schematic structural view of a thermal barrier film according to the present invention;
FIG. 2 is a schematic structural diagram of an air-pillow membrane structure according to a first embodiment of the present invention;
FIG. 3 is a schematic structural view of an air pillow membrane structure according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air-pillow membrane structure according to a third embodiment of the present invention.
In the figure: 10. a heat insulating film; 101. an ethylene-tetrafluoroethylene copolymer film; 102. a light-selective coating; 20. A light transmissive film; 201. a first light-transmitting film; 202. a second light-transmitting film; 30. sealing the air chamber; 301. a first closed air chamber; 302. a second airtight chamber.
Detailed Description
The structure of the heat insulating film and the air pillow type film provided by the present invention will be further described with reference to the accompanying drawings.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
As shown in fig. 1, the heat insulating film 10 according to one embodiment of the present invention is mainly used in an air-pillow type film structure, and thus when the air-pillow type film structure of the present invention is used in a building or the like, indoor lighting of the building or the like can be effectively improved, and light in a wavelength band of 0.78 μm to 2.5 μm in sunlight can be blocked from entering the building or the like, and the range of indoor temperature rise of the building or the like can be effectively reduced.
Specifically, the heat insulation film 10 includes an ethylene-tetrafluoroethylene copolymer film 101 and a light selective coating 102 attached to a surface of the ethylene-tetrafluoroethylene copolymer film 101, and the light transmittance of the light selective coating 102 in a wavelength band of 0.4 μm to 0.78 μm is greater than 40%, and the light blocking rate in a wavelength band of 0.78 μm to 2.5 μm is greater than or equal to 90%.
In order to further improve the heat insulating effect of the heat insulating film 10 and to further retard the increase in indoor temperature of a building or the like, in one embodiment, an ultraviolet light absorber is further distributed in the ethylene-tetrafluoroethylene copolymer film 101 so that the light blocking ratio of the ethylene-tetrafluoroethylene copolymer film 101 in a wavelength band of 0.3 μm to 0.4 μm is 75% or more, and more preferably 80% or more.
In one or more embodiments, the ultraviolet light absorbers include at least one of 2- [ 2-hydroxy-3, 5-bis (1, 1-dimethylpropylphenyl) ] -2H-benzotriazole (UV-328), 2-hydroxy-4-methoxybenzophenone (UV-9), 2-hydroxy-4-n-octoxybenzophenone (UV-531), 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-phenyl) -5-chlorobenzotriazole (UVP-327), or 2, 4-dihydroxybenzophenone (UV-O).
The ethylene-tetrafluoroethylene copolymer film 101 has excellent mechanical strength, weather resistance, fire-proof self-cleaning property, and sound insulation effect, and the weight of the ethylene-tetrafluoroethylene copolymer film 101 is 2kg/m2-3.5kg/m2The heat insulating film 10 made of the ethylene-tetrafluoroethylene copolymer film 101 has the characteristics of light self-weight, large span, self-adjustment, and the like.
To further reduce the self weight of the thermal barrier film 10 while better supporting the light selective coating 102, in one or more embodiments, the ethylene-tetrafluoroethylene copolymer film 101 has a thickness of 100 μm to 500 μm, more preferably 150 μm to 350 μm, and still more preferably 200 μm to 300 μm.
It is understood that, because the surface tension of the ethylene-tetrafluoroethylene copolymer film 101 is low, in one or more embodiments, in order to enable the light-selective coating 102 to be better attached to the surface of the ethylene-tetrafluoroethylene copolymer film 101, avoid the peeling-off phenomenon of the light-selective coating 102 when the heat insulation film 10 is wound in a bending mode and used for a long time, and ensure the stability of the heat insulation film 10 in use, the surface of the ethylene-tetrafluoroethylene copolymer film 101 to which the light-selective coating 102 is to be attached may be subjected to a surface treatment by corona, printing, surface sizing, or the like, so that the surface tension of the surface of the ethylene-tetrafluoroethylene copolymer film 101 to which the light-selective coating 102 is attached is greater than or equal to 60 dynes, and more preferably greater than or equal to 65 dynes.
In the heat insulation film 10, the light selective coating 102 can selectively enable light in a wave band of 0.4-0.78 μm in sunlight to transmit, and simultaneously can block light in a wave band of 0.78-2.5 μm in sunlight, so that the light transmittance of the heat insulation film 10 in the wave band of 0.4-0.78 μm is more than 40%, and the light blocking rate in the wave band of 0.78-2.5 μm is more than or equal to 90%.
In order to provide the light-selective coating 102 with better light-selectivity and, at the same time, better adhesion to the surface of the ethylene-tetrafluoroethylene copolymer film 101, in one or more embodiments, the thickness of the light-selective coating 102 is 2 μm to 30 μm, and more preferably 5 μm to 15 μm.
In the present invention, the photo-selective coating 102 is formed by drying a photo-selective coating, which includes a resin, cesium tungsten bronze and an auxiliary agent, and it should be noted that the resin and the cesium tungsten bronze have excellent compatibility in order to uniformly distribute the cesium tungsten bronze in the photo-selective coating 102 and thereby sufficiently exert the photo-selectivity of the photo-selective coating 102.
Specifically, the resin comprises at least one of polyurethane resin, epoxy resin, polyester resin, acrylic resin or organic silicon resin, and the auxiliary comprises at least one of a curing agent, a film-forming auxiliary agent, a dispersing agent, a thickening agent or a defoaming agent.
In one or more embodiments, to improve the storage stability and adhesion of the photo-selective coating on the ethylene-tetrafluoroethylene copolymer film, a solvent including at least one of ethyl acetate, butyl acetate, toluene, xylene, ethanol, butanol, or acetone is further included in the photo-selective coating.
In order to further improve the heat insulation effect of the heat insulation film 10, and thus better reduce the indoor temperature rise of buildings and the like, the light selective coating 102 further contains an ultraviolet light absorber, and in one or more embodiments, the light blocking rate of the light selective coating 102 in the wavelength band from 0.3 μm to 0.4 μm is greater than or equal to 90%, and more preferably greater than or equal to 95%.
As shown in fig. 2, the air pillow type film structure according to the first embodiment of the present invention includes a heat insulating film 10 and at least one light transmitting film 20, the heat insulating film 10 and the light transmitting film 20 are stacked, and a closed air chamber 30 capable of containing air is disposed between adjacent film layers, and in order to prevent a decrease in light selectivity due to surface contamination of a light selective coating 102 in the heat insulating film 10, the light selective coating 102 in the heat insulating film 10 is disposed to face the light transmitting film 20.
In this embodiment, the air pillow membrane structure includes a thermal insulating film 10 and a light transmissive film 20.
It can be understood that the film layer represents the heat insulation film 10 or the light transmission film 20, the air pillow type film structure comprises more than 2 film layers, the edges of the film layers are connected with each other usually by heat energy impact welding, continuous welding or laser welding, a closed air chamber 30 is arranged between the adjacent film layers, and the closed air chamber 30 is filled with gas by an inflating device, so that the heat resistance of the air pillow type film structure is increased, and the heat insulation performance of the air pillow type film structure is further improved.
In use, the air-pillow type film structure needs to form an envelope of a roof or a facade of a building together with the support frame, and considering that the air-pillow type film structure is easily damaged by ultraviolet rays, atmospheric pollution or other environmental factors when being used as the envelope, the light-transmitting film 20 needs to have excellent mechanical properties and weather resistance, and in one or more embodiments, the tensile strength of the light-transmitting film 20 is greater than or equal to 40 MPa; the light transmissive film 20 has an elongation at break of 250% or more.
In one or more embodiments, the light transmissive film 20 has a light transmission of 85% or more, and more preferably 90% or more, in the 0.4 μm to 0.78 μm wavelength band.
In order to further improve the heat insulation effect of the air pillow type film structure and thus better reduce the temperature rise range in the room of buildings and the like, an ultraviolet light absorber is further distributed in the light-transmitting film 20, and in one or more embodiments, the light blocking rate of the light-transmitting film 20 in the wavelength band of 0.3 μm to 0.4 μm is greater than or equal to 75%, and more preferably greater than or equal to 80%.
In one or more embodiments, the light transmissive film 20 is an ethylene-tetrafluoroethylene copolymer film 101, a poly 4-methyl-1-pentene film, a polyethylene terephthalate film, a polyethylene naphthalate film, a polyethylene terephthalate 1, 4-cyclohexanedimethanol film, a polyethylene terephthalate-acetate film, a polymethyl methacrylate film, a polycarbonate film, an acrylonitrile styrene copolymer film, an acrylonitrile-butadiene-styrene terpolymer film, a polyvinyl chloride film, a polypropylene film, a polyethylene film, an ethylene-vinyl acetate copolymer film, an ethylene-methyl acrylate copolymer film, a polyhydroxyethyl methacrylate film, a polytetrafluoroethylene film, a perfluoroethylene propylene copolymer film, a poly (tetrafluoroethylene) propylene copolymer film, a poly (ethylene-co-ethylene-butylene) film, a poly (ethylene-co-butylene-styrene) film, a poly (ethylene-co-butylene-co-ethylene copolymer film, a poly (ethylene-co-butylene-ethylene-co-ethylene copolymer film, a poly (ethylene-propylene) film, a poly (ethylene-butylene-ethylene-co-ethylene copolymer film, a poly (ethylene-co-ethylene-propylene) film, a poly (ethylene-co-ethylene-butylene-ethylene copolymer film, a poly (ethylene-co-ethylene copolymer film, a poly (ethylene-propylene) film, a poly (ethylene-butylene-ethylene copolymer film, a) film, a poly (ethylene-ethylene copolymer film, a poly (ethylene-ethylene copolymer film, a poly (ethylene-butylene-ethylene) film, a poly (ethylene-ethylene) film, a poly (ethylene-butylene-ethylene) film, a film, one of a polyperfluoroalkoxy resin film, a polychlorotrifluoroethylene film, an ethylene-chlorotrifluoroethylene copolymer film, a polyvinylidene fluoride film, a polyvinyl fluoride film, a thermoplastic polyurethane film, and a polystyrene film, the light-transmitting film 20 is preferably the ethylene-tetrafluoroethylene copolymer film 101 in view of the excellent light-transmitting property, mechanical strength, weather resistance, fire-proof self-cleaning property, and sound-insulating effect of the ethylene-tetrafluoroethylene copolymer film 101.
In order to reduce the self-weight of the light transmissive film 20 and thus the air-pillow film structure, in one or more embodiments, the thickness of the light transmissive film 20 is 100 μm to 500 μm, and more preferably 150 μm to 300 μm.
It is to be understood that the present invention is not limited to the shape of the air-pillow membrane structure, which may be selected according to the actual application, and in one or more embodiments, the shape of the air-pillow membrane structure is one of rectangular, square, diamond, or circular.
As shown in fig. 3, in an air pillow type film structure according to a second embodiment of the present invention, in this embodiment, a light transmissive film 20 includes a first light transmissive film 201 and a second light transmissive film 202, a heat insulating film 10, the first light transmissive film 201, and the second light transmissive film 202 are sequentially stacked, a first sealed air chamber 301 capable of containing gas is provided between the heat insulating film 10 and the first light transmissive film 201, a second sealed air chamber 302 capable of containing gas is provided between the first light transmissive film 201 and the second light transmissive film 202, and a light selective coating 102 in the heat insulating film 10 is provided facing the first light transmissive film 201.
In this embodiment, the first light transmission film 201 has a thickness of 50 μm to 200 μm and the second light transmission film 202 has a thickness of 100 μm to 500 μm, considering visible light transmittance, solar light transmittance, infrared blocking ratio, and the like.
As shown in fig. 4, in an air-pillow type film structure according to a third embodiment of the present invention, in this embodiment, the light transmissive film 20 includes a first light transmissive film 201 and a second light transmissive film 202, the first light transmissive film 201, the heat insulating film 10, and the second light transmissive film 202 are sequentially stacked, a first sealed air chamber 301 capable of containing gas is provided between the first light transmissive film 201 and the heat insulating film 10, a second sealed air chamber 302 capable of containing gas is provided between the heat insulating film 10 and the second light transmissive film 202, and the light selective coating 102 in the heat insulating film 10 is provided to face the first light transmissive film 201 or the second light transmissive film 202.
In this embodiment, the first light transmitting film 201 has a thickness of 100 μm to 500 μm and the second light transmitting film 202 has a thickness of 100 μm to 500 μm in consideration of weather resistance, visible light transmittance, solar light transmittance, and infrared blocking ratio.
It can be understood that the number of the light-transmitting films 20 in the air pillow type film structure of the present invention can be selected according to the requirements of indoor lighting and heat insulation performance in practical application scenes, and the number of the light-transmitting films 20 can be 3, 4, 5 or more.
The air-pillow type film structure comprising the heat insulation film 10 can realize that the light transmittance in a wave band of 0.4-0.78 mu m is more than or equal to 40 percent, and the solar light transmittance in a wave band of 0.3-2.5 mu m is less than or equal to 24 percent. Therefore, when the air pillow type membrane structure is used for buildings and the like, indoor lighting of the buildings and the like is improved, the indoor temperature rise amplitude of the buildings and the like is reduced, the cooling energy consumption is reduced, and the buildings meet the energy-saving requirement of the three-star level green building standard.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
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 utility model. 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. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A heat insulation film is characterized by comprising an ethylene-tetrafluoroethylene copolymer film and a light selective coating attached to any one surface of the ethylene-tetrafluoroethylene copolymer film, wherein the light transmission rate of the light selective coating in a wave band of 0.4-0.78 [ mu ] m is more than 40%, and the light blocking rate in a wave band of 0.78-2.5 [ mu ] m is more than or equal to 90%.
2. The heat insulating film according to claim 1, wherein a surface tension of a surface of the ethylene-tetrafluoroethylene copolymer film for attaching the light selective coating is 60 dynes or more.
3. The thermal barrier film of claim 1, wherein the thickness of the light selective coating is 2 μm to 30 μm.
4. The heat insulating film according to claim 1, wherein the thickness of the ethylene-tetrafluoroethylene copolymer film is 100 μm to 500 μm.
5. The heat insulating film according to any one of claims 1 to 4, wherein the light blocking rate of the ethylene-tetrafluoroethylene copolymer film in a wavelength band of 0.3 μm to 0.4 μm is 75% or more, or the light blocking rate of the light selective coating in a wavelength band of 0.3 μm to 0.4 μm is 90% or more.
6. An air-pillow membrane structure comprising a heat insulating film according to any one of claims 1 to 5 and at least one light transmitting film, wherein the heat insulating film and the light transmitting film are stacked, a closed air chamber capable of containing air is provided between the adjacent film layers, and the light selective coating in the heat insulating film is provided to face the light transmitting film.
7. The air pillow film structure of claim 6, wherein the light transmissive film has a light transmission of 85% or greater in the 0.4 μm-0.78 μm wavelength band.
8. The air pillow membrane structure of claim 6, wherein the light-transmitting membrane has a light blocking ratio greater than or equal to 75% in the 0.3-0.4 μm wavelength band.
9. The air pillow membrane structure of claim 6 wherein the light transmissive film has a tensile strength of greater than or equal to 40 MPa;
and/or the elongation at break of the light-transmitting film is greater than or equal to 250%.
10. The air-pillow film structure of claim 6, wherein the light transmissive film is an ethylene-tetrafluoroethylene copolymer film, a poly-4-methyl-1-pentene film, a polyethylene terephthalate film, a polyethylene naphthalate film, a 1, 4-cyclohexanedimethanol terephthalate film, a polyethylene terephthalate-1, 4-cyclohexanedimethanol film, a polyethylene terephthalate-acetate film, a polymethyl methacrylate film, a polycarbonate film, an acrylonitrile styrene copolymer film, an acrylonitrile-butadiene-styrene terpolymer film, a polyvinyl chloride film, a polypropylene film, a polyethylene film, an ethylene-vinyl acetate copolymer film, an ethylene-methyl acrylate copolymer film, a polyhydroxyethyl methacrylate film, a polyethylene terephthalate film, a polyethylene naphthalate film, a polyethylene terephthalate film, a polyethylene terephthalate film, a polyethylene terephthalate film, a polyethylene terephthalate film, a polyethylene, One of a polytetrafluoroethylene film, a perfluoroethylene propylene copolymer film, a polyperfluoroalkoxy resin film, a polychlorotrifluoroethylene film, an ethylene-chlorotrifluoroethylene copolymer film, a polyvinylidene fluoride film, a polyvinyl fluoride film, a thermoplastic polyurethane film, and a polystyrene film.
11. The air pillow membrane structure of claim 6 wherein the light transmissive film has a thickness of 100 μm to 500 μm.
12. The air pillow membrane structure of claim 6, wherein the light-transmitting membrane comprises a first light-transmitting membrane and a second light-transmitting membrane, wherein the heat-insulating membrane, the first light-transmitting membrane and the second light-transmitting membrane are sequentially stacked, a first closed air chamber capable of containing gas is arranged between the heat-insulating membrane and the first light-transmitting membrane, a second closed air chamber capable of containing gas is arranged between the first light-transmitting membrane and the second light-transmitting membrane, and the light-selective coating in the heat-insulating membrane is arranged to face the first light-transmitting membrane;
or, first printing opacity membrane thermal-insulated membrane and second printing opacity membrane stacks gradually the setting, first printing opacity membrane with be provided with the first airtight air chamber that can hold gas between the thermal-insulated membrane, thermal-insulated membrane with be provided with the airtight air chamber of second that can hold gas between the second printing opacity membrane, in the thermal-insulated membrane the light selectivity coating towards first printing opacity membrane or second printing opacity membrane sets up.
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| CN202122399113.1U CN216192013U (en) | 2021-09-30 | 2021-09-30 | Heat insulation film and air pillow type film structure |
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