TWM495297U - Functional multilayer thin film - Google Patents

Description

Functional multilayer film

The present invention relates to a light transmissive film product, in particular to a functional multilayer film having anti-fog, heat insulation and UV resistance functions.

It is known that there are many products or articles that must be permeable in the visible range, such as: window glass, automotive rearview mirrors, glass for architectural glazing/doors, safety glasses for safety helmets, glass display cabinets or It is the glass door of the refrigerator. In addition to the need for light transmission, the above-mentioned products or products generally require other functions or functions, such as anti-fog and heat insulation functions, depending on the use and environment in which they are used.

In an atmosphere with a temperature difference, the moisture-containing air is easily condensed into water droplets on the surface of the above-mentioned products or articles due to the temperature difference, causing fogging, and fogging on the surface of the above products or articles will occur. Will reduce opacity, and even affect the safety of users for certain products or supplies, such as window glass, car mirrors and safety glasses for eyewear; known to prevent these products or A method for producing fogging, comprising spraying an anti-anti-fogging agent on the surface of the above-mentioned product or article, and the anti-fogging agent is usually a hydrophilic surfactant or a hydrophobic water repellent ( Hydrophobic agent) has an anti-fog effect by forming a hydrophilic or hydrophobic film, but this solution is easily degraded by external force or other climatic factors and cannot provide long-term Anti-fog function.

In order to solve the problem that the above anti-fogging agent is easily degraded in use, an anti-fog film which can be applied to the surface of the above-mentioned product or article is proposed, for example, in the approved new patent of the Republic of China M452059 "an anti-fog film" A light-transmitting anti-fog film capable of preventing the generation of mist is proposed, wherein a protective film is coated on one of the planes of the anti-fog layer to protect the anti-fog layer; and in addition, the disclosed invention patent of the Republic of China 200732396 " An antifogging film combination, a method for producing the same, and an article obtained therefrom, proposes a film having an antifogging layer comprising a film and an antifogging layer formed of a composition forming a polyurethane film The composition comprises a surfactant having an isocyanate-reactive molecular group and a hydrophobic region and a hydrophilic region, and the above composition of the specific component and the scratch resistance of the polyurethane provide a film having an anti-fog function; In the approved Republic of China new patent M359423 "insulation-proof and energy-saving membrane with anti-fog function", a film structure with anti-fog and heat insulation effect is proposed.

One of the purposes of this creation is to propose a functional multilayer film having anti-fog, heat insulation and UV resistance.

In order to achieve the above object, an embodiment of a functional multilayer film proposed by the present invention comprises: a first functional film and a second functional film which are overlapped and bonded together: the first functional film comprises: a first base The material layer has a first surface and a second surface opposite to the first surface, the first surface is coated with an anti-fog layer, and the second surface is coated with a first first pressure sensitive layer (PSA); The second functional film comprises: a second substrate layer having a front surface and a back surface opposite to the front surface, the front surface being coated with a heat insulating layer, and the other side of the heat insulating layer opposite to the second substrate layer and the first pressure sensitive adhesive layer Bonded together, coated with an anti-UV layer on the back a UV layer), a second pressure sensitive adhesive layer is coated on the other side of the UV resistant layer relative to the second substrate layer, and a second release layer is attached to the other side of the UV resistant layer. The film thereby forms a functional multilayer film having anti-fog, heat insulation and UV resistance.

In an embodiment of the present invention, the antifogging layer is a solvent based acrylate coating.

In an embodiment of the present invention, the first substrate layer and the second substrate layer are a light transmissive polyethylene terephthalate film (PET film).

In an embodiment of the present invention, the heat insulating layer is a nano ceramic layer having a function of insulating and providing electromagnetic wave penetration.

In an embodiment of the present invention, the insulating layer is a nano ceramic layer having a nano ceramic material comprising nano ceramic material particles and/or nano photosensitive color changing particles.

In an embodiment of the present invention, the insulating layer is a nano ceramic layer, and the nano ceramic layer can be different colors.

Other functions and embodiments of the present invention will be described below in conjunction with the drawings.

10‧‧‧First substrate layer

11‧‧‧ first surface

12‧‧‧ second surface

20‧‧‧Anti-fog layer

30‧‧‧First pressure sensitive adhesive layer

40‧‧‧Second substrate layer

41‧‧‧ positive

42‧‧‧Back

50‧‧‧Insulation

60‧‧‧Anti-UV layer

70‧‧‧Second pressure layer

80‧‧‧Dissecting film

Fig. 1 is a cross-sectional structural view showing an embodiment of the present invention, showing the relationship of the structure separation of each layer.

Fig. 2 is a cross-sectional structural view showing an embodiment of the present invention, showing a structural relationship in which the layers are overlapped and joined to each other.

Please refer to FIG. 1 and FIG. 2 , wherein FIG. 1 is a cross-sectional structural view of an embodiment of the present invention, showing the relationship of the layers after the structure is separated, and FIG. 2 is a view showing the structure of each layer in FIG. 1 . A cross-sectional structure of a functional multilayer film formed by overlapping and bonding.

The functional multilayer film proposed by the present invention comprises: a first functional film and a second functional film which are overlapped and bonded together. The first functional film comprises: a first substrate layer 10 having a first surface 11 and a second surface 12 opposite to the first surface 11. The first surface 11 is coated with an anti-fog layer 20 and a second surface. 12 is coated with a first pressure sensitive adhesive layer 30 (PSA). A preferred embodiment is to use an optical grade pressure sensitive adhesive to have better light transmittance.

One embodiment of the anti-fog layer 20 is a solvent-based acrylate coating having the ability to resist fogging and abrasion, so that it can be used for a long period of time without loss of damage without the need for protection with other protective layers.

The second functional film comprises: a second substrate layer 40 having a front surface 41 and a back surface 42 opposite to the front surface 41. The front surface 41 is coated with a heat insulating layer 50, and the heat insulating layer 50 is opposite to the second substrate layer 40. The side is bonded to the first pressure sensitive adhesive layer 30, and the back surface 42 is coated with an anti-ultraviolet layer 60 (Anti-Ultra Violet layer), and the anti-ultraviolet layer 60 is coated on the other side of the second substrate layer 40. The second pressure sensitive adhesive layer 70 is attached with a release film 80 on the other side of the second pressure sensitive adhesive layer 70 opposite to the ultraviolet resistant layer 60. The release film 80 is conveniently combined with the second pressure sensitive adhesive layer 70. Peeling, thereby forming a second functional film having heat insulating and ultraviolet blocking functions.

The first substrate layer 10 and the second substrate layer 40 are a light transmissive polyethylene terephthalate film (PET film), and the first substrate layer 10 and the second substrate layer 40 are respectively As a base material of the first functional film and the second functional film; in other words, the aforementioned anti-fog layer 20 and the first The pressure sensitive adhesive layer 30 is applied to the first surface 11 and the second surface 12 of the first substrate layer 10 with the first substrate layer 10 as a base material, thereby forming a first functional film having an anti-fog function; The heat-insulating layer 50 and the ultraviolet-resistant layer 60 are respectively applied to the front surface 41 and the back surface 42 of the second base material layer 40 with the second base material layer 40 as a base material, thereby forming a second heat-insulating and ultraviolet-resistant function. Functional film. Through the first functional film and the second functional film which are overlapped and bonded together, it can be a functional multilayer film with anti-fog, heat insulation and UV resistance.

One embodiment of the heat insulating layer 50 is a nano ceramic layer made of a nano-grade metal-free inorganic nano ceramic material, and the nano ceramic material is applied to the second substrate layer by, for example, sputtering. The front surface 41 of the 40, by controlling the thickness of the sputter layer of the heat insulating layer 50, keeps the heat insulating layer 50 transparent in the visible light range, and controls the penetration of ultraviolet light and infrared light waves to achieve the heat insulating effect. The insulation layer 50 of this creation adopts nano-grade inorganic nano-ceramic material without metal, which has better hardness and high density. Besides the function of heat insulation, it can penetrate electromagnetic waves, so this creation Functional multi-layer films are used, for example, as window glass as an anti-fog film, and do not affect the use of inductive electronic tags, such as those currently installed on the window of a car using radio frequency identification (RFID) technology. Normal use of tags (e-tag tags). In an embodiment of the present invention, the color of the nano ceramic layer further has a function of setting a color, and thus the nano ceramic layer can be of different colors. In a preferred embodiment, the nano ceramic layer 50 is The rice ceramic material comprises nano ceramic material particles and/or nano photosensitive color-changing particles, and the nano ceramic material particles can reduce the light transmittance of the infrared blocking layer when the light is irradiated to reduce the infrared light penetration. Or the nano ceramic material further comprises nano photosensitive color-changing particles, and the nano photosensitive photosensitive particles can react with ultraviolet rays to change the dark color.

Therefore, it can be understood from the above embodiments that, according to the use of the inventive functional multilayer film, the cooperation of the anti-fog layer 20, the heat insulating layer 50 and the ultraviolet resistant layer 60 can be applied to, for example, a window glass or a car. Sight glass, glass for building glazing/doors, goggles for safety helmets, glass display cabinets or glass doors for refrigerated cabinets, as long as the release film 80 of the functional multilayer film is peeled off after actual application Then, the side having the second pressure sensitive adhesive layer 70 is pressed and attached to the surface of the article, so that the articles can be provided with anti-fog, sunshade and ultraviolet-resistant functions.

Although the present invention has been disclosed above through the above embodiments, it is not intended to limit the present creation, and anyone skilled in the art can understand the foregoing technical features and embodiments of the present invention without departing from the present invention. In the spirit and scope of the invention, the scope of patent protection of this creation shall be subject to the definition of the requirements attached to this specification.

10‧‧‧First substrate layer

11‧‧‧ first surface

12‧‧‧ second surface

20‧‧‧Anti-fog layer

30‧‧‧First pressure sensitive adhesive layer

40‧‧‧Second substrate layer

41‧‧‧ positive

42‧‧‧Back

50‧‧‧Insulation

60‧‧‧Anti-UV layer

70‧‧‧Second pressure layer

80‧‧‧Dissecting film

Claims (6)

A functional multilayer film comprising: a first functional film and a second functional film which are overlapped and bonded together: the first functional film comprises: a first substrate layer having a first surface and the same a surface opposite to the second surface, the first surface is coated with an anti-fog layer, the second surface is coated with a first pressure sensitive adhesive layer; the second functional film comprises: a second substrate layer having a front surface And a back surface opposite to the front surface, the front surface is coated with a heat insulation layer, and the heat insulation layer is bonded to the first pressure sensitive adhesive layer on the other side of the second base material layer, the back surface coating An ultraviolet resistant layer having a second pressure sensitive adhesive layer coated on the other side of the ultraviolet resistant layer opposite to the second substrate layer, the second pressure sensitive adhesive layer being opposite to the other side of the ultraviolet resistant layer There is a release film attached. The functional multilayer film of claim 1, wherein the antifogging layer is a solvent acrylate coating. The functional multilayer film of claim 1, wherein the first substrate layer and the second substrate layer are a light transmissive polyethylene terephthalate film. The functional multilayer film according to claim 1, wherein the heat insulating layer is a nano ceramic layer made of a nano-grade metal-free inorganic nano ceramic material. The functional multilayer film according to claim 4, wherein the nano ceramic layer has a nano ceramic material comprising nano ceramic material particles or/and nano photosensitive color-sensitive particles. The functional multilayer film of claim 5, wherein the nano ceramic layer has a color that is dark or different in color.