TWI450829B - Decorative film for bonding and its manufacturing method - Google Patents

Description

Decorative film applied to adhesive decoration and manufacturing method thereof

The invention relates to a decorative film which can be applied to a bonding decoration and a manufacturing method thereof, and the surface thereof can have a metallic luster texture, and is used in a wireless communication electronic device generally having a transmission module, such as a mobile phone, a PDA, etc., the metallic luster The non-conductive layer also does not affect the transmission or reception of the transmission module, and does not cause quality problems such as communication interruption or interference.

New generation wireless communication electronic devices (such as mobile phones, PDA mobile phones, GPS navigation systems, Bluetooth headsets, notebook computers, etc.), with the evolution of personalization and popularization trends, the demand for metal surface decoration is becoming more and more obvious. A strong trend; although direct use of metal or alloy materials can meet the demand; but it is worth noting that if metal materials are used directly, it is not only costly and time-consuming for the processing of mechanical components; When the conductive metal has shielding effect on the electromagnetic wave (metal shielding effect), when the communication product of the internal antenna is applied, the metal casing will cause shielding interference to the transmission and reception of the electromagnetic wave, thereby affecting the communication quality. The way is feasible.

In addition, the industry has also tried to use injection molded plastic components as the outer casing of electronic products, and then through traditional electroplating, resistance thermal vacuum evaporation, vacuum sputtering, electron gun vacuum evaporation (Electron beam) and other processing. The method comprises the surface metal coating operation of the plastic substrate; the foregoing method can achieve the effect of forming a metallic luster texture on the surface of the plastic substrate, but the metal film layer has a conductive property, and therefore the transmission or reception of electromagnetic waves will be The negative effects of interference, such as the use of wireless communication electronic devices built-in antennas, will cause quality problems such as communication interruption or interference.

Therefore, the industry has developed a non-conductive film in a way that allows the product to have a metallic luster and does not interfere with the transmission and reception of wireless signals. The conventional method of manufacturing in the industry is to spray the surface of a plastic workpiece by spraying. The upper primer fills the imperfections on the surface of the plastic workpiece, and then deposits a layer (or layers) of metallic non-conductive film by evaporation or sputtering, and then sprays the lacquer (dyeable) to protect the surface. Scratched metallic luster non-conductive film.

The disadvantage of this conventional method is that it uses the traditional painting method, and the shortcomings faced by the traditional painting method: such as the surface of the painted paint, the edge of the paint, the surface of the orange peel, etc., will affect the product. Appearance and yield issues. Moreover, the more the number of paintings, the worse the yield, and the conventional process has two to four painting processes, the surface of the plastic workpiece is modified by a primer, and then a non-conductive film with a metallic luster is applied. Then apply a dyed lacquer on the metallic non-conductive film as a medium coating (can be sprayed in two layers), and then spray a layer of transparent (also matt) paint to protect the finished surface from scratching. The wear-resistant characteristics, the painting process is more complicated, not only the defect rate is improved, but also the environmental pollution caused by painting is not environmentally friendly.

The main purpose of the present invention is to provide a decorative film for use in adhesive decoration, so that the finished product has the advantages of beautiful appearance, metallic luster texture, simple process, high yield and the like.

In order to achieve the above object, the decorative film of the present invention comprises, in order from the outside and the inside, an extension layer and a non-conductive layer with metallic luster, which are sequentially preformed, bonded and cut, or without preforming. Directly bonding to the formed semi-finished product to form an article with adhesive decoration, and used in a wireless communication electronic device generally having a transmission module, such as a mobile phone, a PDA, etc., not only makes the wireless communication electronic device have a metallic luster texture, The non-conductive layer with metallic luster does not affect the transmission or reception of the transmission module, and has the advantages of beautiful appearance, simple process and high yield.

Another object of the present invention is that the extended layer of the decorative film can be an extended release layer having a release effect, and the decorative film can be formed into an adhesive decorative article through a bonding decoration process without going through a cutting step. The article with the adhesive decoration can be completed by simultaneously stripping the scrap by the peeling of the extended release layer.

The features of the present invention can be clearly understood by referring to the drawings and the detailed description of the embodiments.

The present invention is applied to a decorative film for a decorative decoration and a method for manufacturing the same, and the basic structure of the decorative film is as shown in the first embodiment of the first drawing. The decorative film 1 comprises at least: a non-conductive layer 11 having a metallic luster. And an extended layer 14, the metallic non-conductive layer 11 is disposed on one side surface of the extended layer 14, and the extended layer 14 may be a PET film or a PC film.

The decorative film may also be formed into the following structures: 1. The decorative film 1 is further provided with at least one printed layer and/or color layer, as shown in the second embodiment of the second figure (A). A printed layer 13 is formed between the metallic non-conductive layer 11 and the extended layer 14 , and the printed layer 13 can be formed with a pattern or color; or as shown in the third embodiment of the second figure (B), A printed layer 13 and a first color layer 161 are disposed between the non-conductive layer 11 and the extended layer 14 having a metallic luster, and the decorative film 1 is sequentially extended from the outer layer to the inner layer 14 and the printed layer 13 and the first color. a layer 161 and a non-conductive layer 11 having a metallic luster; or as shown in the fourth embodiment of the second embodiment (C), a first color layer is disposed between the metallic non-conductive layer 11 and the extended layer 14 161.

2, in the first to fourth embodiments, the decorative film is further provided with a second color layer, the second color layer is disposed on the other side surface of the metallic non-conductive layer relative to the extended layer. As shown in the first embodiment, the decorative film 1 is an outer layer and an inner layer of the extending layer 14, the metallic non-conductive layer 11 and the second color layer 162, as in the fifth embodiment of the second figure (D). In addition, the surface of the second color layer 162 can be etched or embossed, so that the second color layer 162 forms a second color layer 162 having a hollow pattern 164, as shown in the sixth figure (E). The embodiment shows (of course, it can also be applied to the first to fourth embodiments), and the depth of the hollow pattern 164 can be deep and the layer 14 can be extended, so that the hollow pattern 164 can pass light, which can express different aesthetics; In addition, the second color layer 163 of the different color may be further disposed between the second color layer 162 having the hollow pattern 164 and the dielectric layer 15, as shown in the seventh embodiment of the second figure (F). It can be applied to the first to fourth embodiments).

4. In each of the above embodiments, the decorative film is further provided with a protective layer and/or a dielectric layer. As shown in the first embodiment, the protective layer 12 is disposed on the extended layer 14 with respect to the non-conductive layer 11 having a metallic luster. The other side surface is as shown in the eighth embodiment of the third figure (A), and the protective layer 12 may be a hardened layer or a painted layer, and the painted layer may be an elastic paint such as leather paint or fluff paint. Having a different tactile sensation; or the decorative film is provided with a protective layer and a dielectric layer, as shown in the fifth embodiment, the protective layer 12 is disposed on the other side surface of the extended layer 14 with respect to the metallic non-conductive layer 11 The dielectric layer 15 is disposed outside the second color layer 162. As shown in the ninth embodiment of the third embodiment (B), the dielectric layer 15 may be an adhesive layer; or the decorative film is provided with a dielectric layer, such as As shown in the fifth embodiment, the dielectric layer 15 is disposed outside the second color layer 162, as shown in the tenth embodiment of the third figure (C).

The manufacturing method of the adhesive decoration of the present invention comprises the following steps: Step A, providing a decorative film 1, the decorative film 1 may be the structure of the first embodiment to the seventh embodiment, and the decorative film is further provided. There is a dielectric layer, which is externally and sequentially arranged as an extended layer 14, a metallic non-conductive layer 11, a second color layer 162 and a dielectric layer 15, as shown in the third (C) and fourth (A) drawings. And the decorative film 1 is wound on the forming wheel 21, and the following steps are performed in a continuous feeding manner; of course, the decorative film may be first cut into a certain area and used in a single sheet manner. The following steps: Step B, performing a pre-forming step on the decorative film 1 , the forming wheel 21 transports the decorative film 1 between the pre-formed molds 22, and molding the decorative film 1 in the pre-forming mold by using high temperature, high pressure and vacuum suction. 22, in the same shape as the semi-finished product 23, as shown in the fourth figure (B); step C, performing the bonding step, using the high temperature and high pressure, the decorative film 1 is bonded to the semi-finished product 23 by the dielectric layer 15, such as Figure 4 (C); Step D, cutting step, will not The decorative film waste adhered to the semi-finished product is cut and removed, as shown in the fourth figure (D), and the finished product is finished to form the article 24 having the decorative film 1; of course, after the finished product is finished, the extended layer of the decorative film The surface is further provided with a protective layer 12, as shown in the fourth figure (E), for example, a hardening step is applied to form the protective layer 12 to increase the surface strength; in addition, if the extended layer of the decorative film can be extended with a release effect The release layer is further provided with a protective layer between the extended release layer and the metallic luster-free non-conductive layer. For example, in the first embodiment, the decorative film 1 is extended from the outside to the inner release layer 14'. The protective layer 12 and the non-conductive layer 11 having a metallic luster, as shown in the eleventh embodiment of the fifth figure, the extended release layer 14' may be a PET film, and the cutting step is not required, only The extended release layer 14' is peeled off, and the extended release layer 14' is separated from the decorative film 1 on the semi-finished product 23, and the decorative film waste A bonded to the semi-finished product 23 is simultaneously removed from the extended release layer 14', such as As shown in the sixth figure, it is formed into an article 24 having a decorative film 1.

As shown in the seventh figure (A), the manufacturing method of the second embodiment of the adhesive decoration of the present invention comprises the following steps: Step A, providing a decorative film, the decorative film 1 may be the first embodiment to the seventh The structure of the embodiment, wherein the decorative film is further provided with a dielectric layer, which is externally and sequentially followed by an extended layer 14, a metallic non-conductive layer 11, a second color layer 162 and a dielectric layer 15, as shown in the third figure. (C) and the seventh figure (A), and the decorative film 1 is wound on the forming wheel 21; step B, providing half of the finished product 23; step C, performing the bonding step, using the high temperature and high pressure to make the decorative film 1 The dielectric layer 15 and the semi-finished product 23 are bonded to each other, as shown in the seventh figure (B); in step D, the cutting step, the decorative film waste which is not bonded to the semi-finished product is cut and removed, as shown in the seventh figure (C). Finishing the finished product to form the article 24 having the decorative film 1; of course, the decorative film is further provided with an extended release layer, so that the cutting step is not required, and only the peeling of the extended release layer is required. The scrap is simultaneously stripped and the article with the decorative film can also be formed.

Furthermore, as shown in the eighth diagram (A), the first embodiment of the decorative film 1 is an outer layer and an inner layer of the extension layer 14 and the non-conductive layer 11 having a metallic luster, as in the first embodiment. Steps B to D, wherein the step C further comprises: step C1, providing an adhesive layer 231 on the semi-finished product 23, as shown in the eighth figure (B), a layer of medium can be formed on the surface of the semi-finished product 23 by means of gluing. Step 231; Step C2, using the high temperature and high pressure, the semi-finished product 23 is bonded to the decorative film 1 by the dielectric layer 231, as shown in the eighth figure (C).

Then, through the cutting step of step D (of course, if the decorative film is further provided with the extended release layer, the cutting step is not required), the article 24 having the decorative film 1 can be formed, and the step E can be further included. Step E is to set a paint layer, and a painting step is performed on the surface of the printed layer 13 of the decorative film to form a paint layer 17 on the extended layer 14. As shown in the eighth figure (D), the paint layer 17 can be It is an elastic lacquer (for example, a leather lacquer or a fluff lacquer); of course, the decorative film 1 of the first embodiment can also be subjected to the steps B to D of the second embodiment, wherein the step C also includes the steps C1 and C2, and the same can be applied. Finish the item with the decorative film.

It is worth mentioning that the present invention has the following advantages over the conventional system: 1. The decorative film of the present invention utilizes a metallic non-conductive layer applied to the decorated casing to make the casing have a metal. Glossy texture, and can be combined with different colors to form a metallic luster.

2. The metallic non-conductive layer is a non-conductive film layer. If it is applied to a housing such as a wireless communication electronic device having a transmission module, such as a mobile phone, a PDA, etc., the metallic non-conductive layer is not It will affect the transmission or reception of the transmission module without causing quality problems such as communication interruption or interference.

3. The decorative film of the invention is formed on the decorated shell by means of adhesive decoration, which can simplify the conventional process, such as painting, to avoid the particle surface of the paint surface, the edge of the paint, the surface of the orange peel. Flat and so on.

The technical content and technical features of the present invention have been disclosed as above, but those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

Decorative film. . . 1

Metallic non-conductive layer. . . 11

The protective layer. . . 12

Printing layer. . . 13

Extension layer. . . 14

Extend the release layer. . . 14’

Dielectric layer. . . 15

The first color layer. . . 161

The second color layer. . . 162

The third color layer. . . 163

Hollow pattern. . . 164

Paint layer. . . 17

Molding wheel. . . twenty one

Preformed mold. . . twenty two

Semi finished product. . . twenty three

Dielectric layer. . . 231

article. . . twenty four

Electronic device. . . 3

The first figure is a schematic structural view of a first embodiment of a decorative film in the present invention.

The second drawings (A) to (F) are schematic views showing the structures of the second to seventh embodiments of the decorative film of the present invention.

The third (A) to (C) are structural views of the eighth to tenth embodiments of the decorative film of the present invention.

The fourth drawings (A) to (E) are schematic structural views of the first method embodiment of the adhesive decoration in the present invention.

Fig. 5 is a schematic view showing the structure of the eleventh embodiment of the decorative film of the present invention.

Fig. 6 is a schematic view showing the structure of the extended release layer peeling in the present invention.

The seventh (A) to (C) are schematic structural views of the second method embodiment of the adhesive decoration in the present invention.

Fig. 8(A) is a schematic view showing the structure of a fourth embodiment of the decorative film of the present invention.

The eighth (B) to (D) are schematic views showing the structure of the fourth embodiment of the decorative film of the present invention.

Decorative film. . . 1

Metallic non-conductive layer. . . 11

Extension layer. . . 14

Claims (20)

A decorative film having a metallic texture, the decorative film comprising at least: an extended layer; a non-conductive layer having a metallic luster, the metallic non-conductive layer being disposed on one side surface of the extended layer; at least one printed layer The printed layer is disposed between the non-conductive layer and the extended layer having a metallic luster; the first color layer is disposed between the printed layer and the non-conductive layer with metallic luster; and the second color layer is provided The non-conductive layer having the metallic luster is opposite to the other side surface of the expanded layer. The decorative film having a metallic texture according to claim 1, wherein the extended layer may be an extended release layer having a release effect. The decorative film having a metallic texture according to claim 1 or 2, wherein the dielectric layer is further provided outside the second color layer. The decorative film having a metallic texture according to claim 3, wherein the decorative film further comprises a protective layer disposed on the other side surface of the extended layer with respect to the metallic non-conductive layer. The decorative film having a metallic texture according to claim 1, wherein the surface of the second color layer can be etched or etched to form a tool. A second color layer with a cutout pattern. The decorative film having a metallic texture as described in claim 5, wherein the extended layer may be an extended release layer having a release effect. The decorative film having a metallic texture according to claim 5, wherein the second color layer may be further provided with a third color layer of another different color. The decorative film having a metallic texture according to any one of the items 5 to 7, wherein the dielectric layer is further provided outside the second color layer. The decorative film having a metallic texture according to claim 8, wherein the decorative film further comprises a protective layer disposed on the other side surface of the extended layer with respect to the metallic non-conductive layer. A manufacturing method of adhesive decoration comprises the following steps: A. providing a decorative film as in claim 1 of the patent application; B, performing a pre-forming step on the decorative film to form the same outer shape as the semi-finished product; And performing a bonding step, bonding the decorative film and the semi-finished product to each other; D, cutting step, cutting and removing the decorative film waste not bonded to the semi-finished product, and completing the finished product. A manufacturing method of adhesive decoration comprises the following steps: A. providing a decorative film according to item 2 of the patent application; B, performing a pre-forming step on the decorative film to form the same outer shape as the semi-finished product; Carrying out the bonding step, bonding the decorative film and the semi-finished product to each other; D, peeling off the extended release layer, separating the extended release layer from the decorative film, and simultaneously moving the decorative film waste bonded to the semi-finished product simultaneously with the extended release layer In addition to completing the finished product. A manufacturing method of adhesive decoration comprises the following steps: A. providing a decorative film as claimed in claim 6; B, performing a preforming step on the decorative film to form the same outer shape as the semi-finished product; Carrying out the bonding step, bonding the decorative film and the semi-finished product to each other; D, peeling off the extended release layer, separating the extended release layer from the decorative film, and simultaneously moving the decorative film waste bonded to the semi-finished product simultaneously with the extended release layer In addition to completing the finished product. A manufacturing method of adhesive decoration comprises the following steps: A, providing a decorative film as claimed in claim 1; B, providing half of the finished product; C, performing a bonding step, bonding the decorative film to the semi-finished product ;D, cutting step, cutting the decorative film waste that has not been bonded to the semi-finished product Remove and complete the finished product. A manufacturing method of adhesive decoration comprises the following steps: A, providing a decorative film according to item 2 of the patent application scope; B, providing half of the finished product; C, performing a bonding step, bonding the decorative film and the semi-finished product to each other; D, The extended release layer is peeled off, and the extended release layer is separated from the decorative film, and the decorative film waste bonded to the semi-finished product is simultaneously removed from the extended release layer to complete the finished product. A manufacturing method of adhesive decoration comprises the following steps: A, providing a decorative film as claimed in claim 6; B, providing half of the finished product; C, performing a bonding step, bonding the decorative film and the semi-finished product to each other; The extended release layer is peeled off, and the extended release layer is separated from the decorative film, and the decorative film waste bonded to the semi-finished product is simultaneously removed from the extended release layer to complete the finished product. The method for manufacturing a bonded decorative article according to any one of claims 10 to 12, wherein in the step B, the decorative film is formed on the preform mold by using high temperature, high pressure, and vacuum suction. The method of manufacturing a bonded decorative article according to any one of claims 10 to 15, wherein the decorative film is wound on a molding wheel. The manufacturing method of the adhesive decoration according to any one of claims 10 to 15, wherein the decorative film is further provided with a dielectric layer, the dielectric layer is disposed outside the second color layer, and the dielectric layer is For the adhesive material. The manufacturing method of the adhesive decoration according to claim 18, wherein in the step C, the decorative film is bonded to each other by the dielectric layer and the semi-finished product by using high temperature and high pressure. The manufacturing method of the adhesive decoration according to any one of claims 10 to 15, wherein the step C further comprises: C1, a dielectric layer provided with an adhesive material on the semi-finished product; C2, using high temperature, The high pressure allows the semi-finished product to adhere to each other by the dielectric layer and the decorative film.