TWM526992U - Main function film of metal plate cladding metal decorative film - Google Patents

Description

Main function film of metal decorative film for metal plate cladding

The present invention relates to a main functional film for a metal decorative film for metal plate cladding, in particular, a metal plate decoration metal decoration which can reduce the manufacturing cost without using an ultraviolet curing resin and a process of eliminating ultraviolet light source irradiation. The main functional film of the membrane.

The metal-tone decorative film-clad metal plate is widely used in household appliances, such as refrigerators, televisions, washing machines, dishwashers, and the like, and has a stainless steel appearance.

1 and FIG. 2, FIG. 1 is a schematic exploded perspective view of a conventional metal decorative film for metal plate cladding; and FIG. 2 is a schematic view showing a manufacturing process of a conventional metal decorative film for metal plate cladding.

As shown in the figure, a conventional metal decorative film 200 for metal plate cladding is formed by UV embossing to form a microstructure layer by applying an ultraviolet curing resin 110 to a PET film 100. After the transparent PET film 100 is pressed by an embossing wheel 120 (having a embossing pattern 121 on its surface) and a set of back pressure rollers 130, the PET film 100 is heated by irradiation from below by an ultraviolet lamp 140, and the ultraviolet curing resin 110 is hardened. Thereafter, a microstructure layer 111 is formed, and then an evaporation layer 150 is deposited on the microstructure layer 111 by aluminum or other lustrous metal. Thus, from the surface of the PET film 100, there is a good metal tone. And there is the effect of the pattern change.

Then, the PET film 100 is coated with a scratch-resistant layer 155, such as but not limited to an acrylic glue, and a protective film 160 is attached to the scratch-resistant layer 155; and a glue 164 is disposed under the vapor-deposited layer 150. In combination with a PVC film 165, a metal decorative film is formed.

In use, the metal decorative film 200 can be combined with a metal plate 170 such as, but not limited to, iron by a hot melt adhesive 166, and the metal plate 170 is placed in an oven (not shown) at 160. After baking at a temperature above °C, after the hot melt adhesive is melted, the metal decorative film can be adhered to the metal plate 170, so that the metal plate 170 has the texture of the microstructure layer 111.

However, the above-mentioned conventional metal decorative film has a complicated structure, and the manufacturing method has two disadvantages: the first is that the ultraviolet curing embossing method is a costly method, and the reason for the high cost is that the ultraviolet resin 110 is relatively expensive. Second, the energy of the ultraviolet lamp 140 is limited, so the speed is slow, and it is a drawback.

One of the objects of the present invention is to provide a main functional film of a metal decorative film for metal plate lamination, which does not require the use of an ultraviolet curable resin, and can reduce the manufacturing cost.

Another object of the present invention is to provide a main functional film for a metal decorative film for metal plate lamination, which can reduce the number of manufacturing steps without using an ultraviolet light source.

According to one aspect of the present invention, the present invention provides a main functional film of a metal decorative film for metal plate cladding, which is a smooth surface above a plastic film, and a microstructure is formed below, and the microstructure is formed by The plastic film is formed on the plastic film by pressing between an embossing wheel and a back pressure roller.

The detailed description of the drawings and the preferred embodiments are set forth in the accompanying drawings.

Referring to FIG. 3 to FIG. 4 , FIG. 3 is a schematic cross-sectional view showing a main functional film of a metal decorative film for metal plate cladding according to a preferred embodiment of the present invention; FIG. 4 is a schematic view of a preferred embodiment of the present invention; Schematic diagram of the manufacturing process of the main functional film of the metal decorative film for metal plate cladding.

As shown in the figure, the main functional film of the metal decorative film for metal plate cladding of the present invention is a combination of a smooth surface on top of a plastic film 10 and a microstructure 20 formed on the lower side.

The plastic film 10 is made of a plastic material such as polybutylene terephthalate (PBT) or polycarbonate (PC).

The microstructure 20 is located under the plastic film 10, and is formed on the plastic film 10 by pressing the plastic film 10 through an embossing wheel 30 and a back pressure roller 40. The embossing wheel is formed on the plastic film 10. The surface 30 has a embossing 31 corresponding to the microstructure 20.

As shown in FIG. 4, the molten polymer is heated by an extruder 50 and then transferred to a T-die 60, which forms a thermal film from which the T-die 60 flows. Below the head 60, there is an embossing wheel 30 and a set of back pressure rollers 40. The embossing wheel 30 and the back pressure wheel 40 have cooling liquid (not shown) for cooling, and the plastic film 10 is embossed by the embossing wheel 30. When the back pressure roller 40 passes between the embossing wheel 30, the embossing wheel 30 is pressed onto the embossing wheel 30 to form the microstructure 20 having the embossing pattern 31. After the embossing wheel 30 is cooled, the embossing wheel 30 is cooled. The main functional film of the metal decorative film shown in Fig. 4.

The main functional film of the metal decorative film can be formed by only one process, and it is not necessary to complete the PET film as in the prior art, and then add a layer of microstructure by the ultraviolet curing embossing method, thereby greatly saving the manufacturing cost. .

Extrusion embossing is a well-known technique, but why is anyone using this method to make metal decorative films? The reason is that there is no suitable polymer to make such a film, because, firstly, the film must have a temperature resistance of about 180 ° C (because of the iron sheet bonding process); second, the film must have good metal evaporation. Subsequent; the third must be easy to extrude; the fourth must be transparent; and the fifth must be low.

Commonly used five major resins are easy to form films, PE, PP, ABS, PS, PVC, but can not withstand temperature and vapor deposition and poor adhesion, therefore, excluded.

Engineering plastics with a temperature resistance above 180 °C, such as nylon, PC, PET, liquid crystal plastics, etc. The adhesion of nylon to metal is poor, PET will be heat-resistant after crystallization, but PET will become opaque after crystallization. Although PC is transparent and heat-resistant, metal vapor deposition is poor in adhesion and expensive, and liquid crystal plastic is too expensive. Therefore, PBT becomes the best choice.

Please refer to FIG. 5 , which is a cross-sectional view showing the use of the main functional film of the metal decorative film for metal plate cladding according to a preferred embodiment of the present invention. As shown in the figure, a metal evaporation layer 70 may be further disposed under the microstructure 20, such as but not limited to an aluminum evaporation layer; the plastic film 10 may further have a scratch-resistant layer 75 thereon. The scratch resistant layer 75 is, for example but not limited to, an acryl layer. In addition, the anti-scratch layer 75 may further have a protective film layer 76 thereon.

In addition, the metal evaporation layer 70 may further have a glue layer 80 and a PVC film 85. The adhesive layer 80 can be applied under the metal evaporation layer 70; and the PVC film 85 is disposed under the adhesive layer 80, and the adhesive layer 80 can be combined with the plastic film 10, that is, A metal decorative film is formed.

In use, the metal decorative film can be combined with a metal plate 95 such as, but not limited to, iron by a hot melt adhesive 90, and the metal plate 95 is placed in an oven (not shown) at 160 ° C. The above temperature is baked. After the hot melt adhesive is melted, the metal decorative film is adhered to the metal plate 95, so that the metal plate 95 has the texture of the microstructure 20, so that the surface of the metal decorative film is viewed from the surface. There is a good metal tone and a pattern change effect.

Therefore, the main functional film of the metal decorative film for metal plate cladding of the present invention can reduce the manufacturing cost without using an ultraviolet curing resin, and the process of irradiating without using an ultraviolet light source can reduce the advantages of the manufacturing process. It can improve the shortcomings of the main functional film of the metal decorative film for conventional metal plate cladding.

The disclosure of the present invention is a preferred embodiment. Any change or modification of the present invention originating from the technical idea of the present invention and being easily inferred by those skilled in the art will not deviate from the scope of patent rights of the present invention.

In summary, the case, regardless of its purpose, means and efficacy, is showing its technical characteristics that are different from the conventional ones, and its first creation is practical, and it is also in line with the new patent requirements. I will be granted a patent at an early date.

10‧‧‧Plastic film
20‧‧‧Microstructure
30‧‧‧ embossing wheel
31‧‧‧ embossing
40‧‧‧Back pressure wheel
50‧‧‧Extruder
60‧‧‧T-die
70‧‧‧Metal evaporation
75‧‧‧Scratch resistant layer
76‧‧‧Protective film
80‧‧‧ glue layer
85‧‧‧PVC film
90‧‧‧Hot melt adhesive
95‧‧‧Metal plates
100‧‧‧PET film
110‧‧‧ UV curing resin
111‧‧‧Microstructure
120‧‧‧embossing wheel
121‧‧‧ embossing
130‧‧‧Back pressure wheel
140‧‧‧UV light
150‧‧‧vapor layer
155‧‧‧Scratch resistant layer
160‧‧‧Protective film
165‧‧‧PVC film
164‧‧ ‧ glue
166‧‧‧Hot melt adhesive
170‧‧‧Metal plates
200‧‧‧Metal decorative film for metal plate cladding

1 is a schematic view showing an exploded cross-sectional view of a conventional metal decorative film for metal plate cladding. 2 is a schematic view showing a manufacturing process of a conventional metal decorative film for metal plate cladding. 3 is a schematic cross-sectional view showing a main functional film of a metal decorative film for metal plate cladding according to a preferred embodiment of the present invention. 4 is a schematic view showing a manufacturing process of a metal decorative film for metal plate cladding according to a preferred embodiment of the present invention. FIG. 5 is a schematic cross-sectional view showing the use of a metal decorative film for metal plate cladding according to a preferred embodiment of the present invention.

10‧‧‧Plastic film

20‧‧‧Microstructure

Claims (7)

The main functional film of the metal decorative film for metal plate cladding comprises: a plastic film having a smooth surface above; a microstructure disposed below the plastic film, the microstructure being passed through the plastic film An embossing wheel and a back pressure roller are pressed together to form on the plastic film, wherein the structure is a pattern microstructure, a lattice-like microstructure or a hairline microstructure. The main functional film according to claim 1, wherein the plastic film is polybutylene terephthalate (PBT) or polycarbonate (PC). The main functional film of claim 1, wherein the embossing wheel surface has a embossing pattern corresponding to the microstructure. The main functional film according to claim 1, wherein the microstructure further has a metal evaporation layer, and the metal evaporation layer is an aluminum evaporation layer. The main functional film according to claim 4, wherein the plastic film further has an anti-scratch layer. The main functional film of claim 5, wherein the anti-scratch layer further has a protective film layer. The main functional film according to claim 6, wherein the metal evaporation layer further has: a glue layer which can be applied under the metal vapor deposition layer; and a PVC film which is placed on the glue layer. Below this, the glue layer can be combined with the metal deposition layer.