TWI844415B - Film pasting assembly - Google Patents

Abstract

The present invention relates to a film pasting assembly and an assembling method. The film pasting assembly comprises a base film, a first release film and a second release film. The base film is provided with a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is annular; the first release film comprises a first annular portion and a first handle portion extending outwards from an outer circumference of the first annular portion; the first release film is arranged on the first adhesive layer through the first annular portion; the second release film comprises a second annular portion and a second handle portion extending inwards from an inner circumference of the second annular portion; the second release film is arranged on the second adhesive layer through the second annular portion, and a size of the inner circumference of the first annular portion is equal to that of the outer circumference of the second annular portion; and the first release film and the second release film can be torn apart respectively so as to paste a product, so that the success rate and efficiency of product assembly can be improved, and the yield of the products can be improved, and meanwhile, the first release film and the second release film can be processed by a same raw material, and therefore, the cost is saved.

Description

Film sticker assembly

The present invention relates to the field of electronic product assembly, and specifically to a film-mounted component and an assembly method.

When assembling the coils and magnets of electronic products, the film-mounted assembly is assisted. The film-mounted assembly includes a carrier film, on which there are two layers of inner and outer colloids. The colloids are in a ring shape. The inner colloid is used to bond the coils, and the outer colloid is used to bond the ring magnets. Both layers of colloids have release films. When assembling the coils and magnets, the release film on the outer colloid should be torn off first to expose the outer colloid for the installation of the ring magnets, and then the release film on the inner colloid should be torn off to expose the inner colloid for the installation of the coils. However, in the current film assembly design, the two release films are cut and formed from two raw film materials, which is not only costly, but also overlaps at least partially in the axial direction when placed on the colloid. This means that when the release film on the outer colloid is torn off, the release film on the inner colloid will be pulled up and torn off together, affecting assembly. In addition, since the magnet needs to be installed and then the coil needs to be installed after a period of time, the inner colloid is exposed during the period of time, which can easily lead to a weakening of viscosity, affecting the assembly of the coil.

The purpose of the present invention is to provide a film sticker assembly that can improve the success rate of film peeling, provide convenience for product assembly, and at the same time, save costs.

On the one hand, the present invention provides a film sticker assembly, which includes: a base film; a first adhesive layer formed into a ring and disposed on the base film; a first release film, including a first ring-shaped portion and a first handle portion, the first ring-shaped portion is bonded to the first adhesive layer, and the first handle portion extends outward from the outer circumference of the first ring-shaped portion; a second adhesive layer, disposed on the base film; and a second release film, including a second ring-shaped portion and a second handle portion, the second ring-shaped portion is bonded to the second adhesive layer, and the second handle portion extends inward from the inner circumference of the second ring-shaped portion; wherein the second release film is located inside the first release film, and the inner circumference size of the first ring-shaped portion is the same as the outer circumference size of the second ring-shaped portion.

In some embodiments, the second adhesive layer is disposed on the first adhesive layer.

In some embodiments, the inner circumference size of the first annular portion is the same as the inner circumference size of the first rubber layer, and the outer circumference size of the first annular portion is the same as the outer circumference size of the first rubber layer.

In some embodiments, the second rubber layer is formed into a ring shape, and the inner circumference size of the second rubber layer is the same as the inner circumference size of the second ring-shaped portion, and the outer circumference size of the second rubber layer is the same as the outer circumference size of the second ring-shaped portion.

In some embodiments, the second rubber layer is formed into a ring shape, and the outer circumference size of the second rubber layer is the same as the inner circumference size of the first rubber layer.

In some embodiments, the first rubber layer, the second rubber layer, the first annular portion, and the second annular portion are annular.

In some embodiments, the thickness of the second adhesive layer is greater than or equal to the thickness of the first adhesive layer.

In some embodiments, the second handle portion and the second annular portion have a notch at the connection position.

In some embodiments, there are two second handles, and the two second handles extend toward each other from opposite positions on the inner circumference of the second annular portion.

In some embodiments, there are multiple second handles, and the plurality of second handles extend toward each other from the inner periphery of the second annular portion at intervals and opposite positions.

In some embodiments, an identification portion is provided on the first handle portion, and the identification portion is used to detect the tearing state of the first release film.

In some embodiments, the base film includes a main body and a third handle portion, the third handle portion extends outward from the periphery of the main body, the first handle portion of the first release film is located on the third handle portion, and the first handle portion and the third handle portion are bonded via a third adhesive layer.

On the other hand, the present invention provides an assembly method, which includes: providing a film assembly, wherein the film assembly includes: a base film; a first adhesive layer formed into a ring and disposed on the base film; a first release film, including a first ring-shaped portion and a first handle portion, the first ring-shaped portion being bonded to the first adhesive layer, and the first handle portion extending outward from the outer periphery of the first ring-shaped portion; a second adhesive layer, disposed on the base film and located within the first adhesive layer; and a second release film, including The second annular portion and the second handle portion, the second annular portion is bonded to the second adhesive layer, and the second handle portion extends inward from the inner circumference of the second annular portion; the second release film is located inside the first release film, and the inner circumference size of the first release film is the same as the outer circumference size of the second release film; the first release film of the film-sticking assembly is torn off to expose the first adhesive layer; the magnet is bonded to the first adhesive layer; the second release film of the film-sticking assembly is torn off to expose the second adhesive layer; the coil is bonded to the second adhesive layer.

In some embodiments, after the magnet is adhered to the first adhesive layer and before the second release film of the film assembly is torn off, the method further includes: standing still so that the magnet is fully adhered to the first adhesive layer.

In some embodiments, the base film includes a main body and a third handle portion, the third handle portion extends outward from the periphery of the main body, the first handle portion of the first release film is located on the third handle portion, and the first handle portion and the third handle portion are bonded via a third adhesive layer.

In some embodiments, the second handle portion is torn off to drive the second release film to separate from the second adhesive layer.

In some embodiments, the second handle portion and the second annular portion have a notch at the connection position.

In some embodiments, there are two second handles, and the two second handles extend toward each other from opposite positions on the inner circumference of the second annular portion.

The film-mounting assembly of the embodiment of the present invention can be used for assembly and coil. When the first release film is torn off and the magnet is mounted, the second release film is retained on the second adhesive layer, and the first release film and the second release film can be cut from the same raw material, which not only saves costs but also improves the success rate of film tearing and the assembly quality of the product.

1: Base film

11: Main body

12: The third handle

2: First adhesive layer

3: First release film

31: First annular part

32: First Commander

4: Second adhesive layer

5: Second release film

51: Second annular part

52: Second in command

53: Gap

6: Logo part

7: The third adhesive layer

8: The third release film

81: The fourth command post

[Figure 1] is a schematic diagram of a membrane patch assembly according to an embodiment of the present invention.

[Figure 2] is a schematic diagram of the structure of the second release film of an embodiment of the present invention.

[Figure 3] is a schematic diagram of an existing film sticker assembly.

[Figure 4] is a front view of a film patch assembly according to an embodiment of the present invention.

[Figure 5] is a schematic diagram of the structure of the second release film of another embodiment of the present invention.

[Figure 6] is a schematic diagram of the assembly method of an embodiment of the present invention.

[Figure 7] is a schematic diagram of the assembly method of an embodiment of the present invention.

The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. For those with ordinary knowledge in the field, the present invention can be fully understood without the description of these details. In order to avoid confusing the essence of the present invention, the known methods, processes, procedures, components and circuits are not described in detail.

In addition, those with ordinary knowledge in the art should understand that the figures provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, the words "include", "including" and similar words in the specification should be interpreted as inclusive rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

In the description of the present invention, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

As shown in Figures 1 and 2, they are schematic diagrams of a film assembly of an embodiment of the present invention. The film assembly includes a base film 1, a first adhesive layer 2, a first release film 3, a second adhesive layer 4, and a second release film 5. The first adhesive layer 2 is formed into a ring shape and is disposed on the base film 1. The first release film 3 includes a first annular portion 31 and a first handle portion 32, the first annular portion 31 is bonded to the first adhesive layer 2, and the first handle portion 32 extends outward from the outer periphery of the first annular portion 31. The second adhesive layer 4 is disposed on the base film 1 and is located on the first adhesive layer 2. The second release film 5 includes a second annular portion 51 and a second handle portion 52. The second annular portion 51 is bonded to the second adhesive layer 4, and the second handle portion 52 extends inward from the inner circumference of the second annular portion 51. In this embodiment, the first adhesive layer 2 and the second adhesive layer 4 can be, but are not limited to, formed of pressure sensitive adhesive (PSA).

The second release film 5 is located on the inner side of the first release film 3, and the inner circumference of the first release film 3 is the same as the outer circumference of the second release film 5. The first release film 3 and the second release film 5 may share the same raw material, that is, they are cut from the same raw film material, so the inner circumference of the first release film 3 is the same as the outer circumference of the second release film 5. In addition, the thickness of the second adhesive layer 4 is greater than or equal to the thickness of the first adhesive layer 2. This embodiment takes the case where the thickness of the second adhesive layer 4 is greater than the thickness of the first adhesive layer 2 as an example, but this does not limit the implementation of this embodiment.

The following is a diagram of a conventional film assembly in the prior art to illustrate such advantages: As shown in FIG3 , it is a schematic diagram of a conventional film assembly, which includes a base film 1, a first adhesive layer 2, a first release film 3, a second adhesive layer 4, and a third release film 8. The base film 1, the first adhesive layer 2, the first release film 3, and the second adhesive layer 4 may have the same structure as the film assembly of the present embodiment. The third release film 8 has a fourth handle 81, and the fourth handle 81 is superimposed on one side of the first handle 32 of the first release film 3 in the axial direction (in FIG3 , the vertical direction). In actual production, the first release film 3 is first torn off through the first handle 32 to expose the first adhesive layer 2, and the magnet is pasted on the first adhesive layer 2. Then, the third release film 8 is torn off through the fourth handle 81 to expose the second adhesive layer 4, and the coil is pasted on the second adhesive layer 4. Therefore, when the first release film 3 is torn off, since the first handle 32 and the fourth handle 81 overlap, the third release film 8 will be lifted up when the first release film 3 is torn off, so that the first adhesive layer 2 and the second adhesive layer 4 are exposed at the same time. Furthermore, after pasting the magnet on the first adhesive layer 2, it is usually necessary to leave it for a period of time. During this period of time, the second adhesive layer 4 is in an exposed state, which will reduce the viscosity and is not conducive to the mounting of the coil. Moreover, the outer circumference of the third release film 8 is difficult to perfectly match the outer circumference of the second rubber layer 4, and the processing difficulty is high during the die-cutting process. At the same time, the first release film 3 and the third release film 8 need to be processed from two pieces of raw film materials, which is costly and difficult to process.

The first release film 3 and the second release film 5 of the film-sticking assembly of this embodiment do not overlap in the axial direction (up and down direction in FIG. 1 ), and will not affect each other when being torn off. When the first release film 3 is torn off and the magnet is attached, the second release film 5 remains on the second adhesive layer 4, ensuring the correct process. Moreover, the first release film 3 and the second release film 5 can be processed from the same raw material, saving costs and more accurately controlling the matching dimensions with the first adhesive layer 2 and the second adhesive layer 4.

As shown in Figures 1 and 2, in this embodiment, the first rubber layer 2, the first annular portion 31, the second rubber layer 4, and the second annular portion 51 are all in the shape of a ring, which corresponds to the shape of the magnet and the coil to be assembled, which are usually in the shape of a ring. In other embodiments, the first rubber layer 2, the first annular portion 31, the second rubber layer 4, and the second annular portion 51 may also be in the shape of an ellipse, a racetrack, or other rings.

As shown in Figures 1 and 2, in this embodiment, the inner circumference of the first annular portion 31 is the same as the inner circumference of the first adhesive layer 2, and the outer circumference of the first annular portion 31 is the same as the outer circumference of the first adhesive layer 2. As a result, the first annular portion 31 and the first adhesive layer 2 overlap in the axial direction, and when the first release film 3 is not torn off, the first release film 3 just completely covers the first adhesive layer 2, which can improve the compactness of the structure, avoid misadhesion, and effectively improve the success rate of film tearing.

As shown in Figures 1 and 2, in this embodiment, the inner circumference of the second rubber layer 4 is the same as the inner circumference of the second annular portion 51, and the outer circumference of the second rubber layer 4 is the same as the outer circumference of the second annular portion 51. As a result, the second annular portion 51 and the second rubber layer 4 overlap in the axial direction, and the second release film 5 completely covers the second rubber layer 4, which can improve the compactness of the structure, avoid misadhesion, and effectively improve the success rate of film tearing.

As shown in Figures 1, 2 and 4, in this embodiment, the outer circumference of the second rubber layer 4 is the same as the inner circumference of the first rubber layer 2. Therefore, when the first release film 3 and the second release film 5 are attached to the first rubber layer 2 and the second rubber layer 4 respectively, there is almost no gap between the inner circumference of the first release film 3 and the outer circumference of the second release film 5 in the radial direction, and the rubber surface can be completely covered.

Among them, part of the structure is omitted by wavy lines in Figure 4 to solve the problem that the horizontal dimension of Figure 4 is much larger than the vertical dimension.

As shown in FIG4 , in this embodiment, the thickness of the second adhesive layer 4 is greater than that of the first adhesive layer 2. The first release film 3 is bonded to the first adhesive layer 2, and the second release film 5 is bonded to the second adhesive layer 4. Therefore, the first release film 3 and the second release film 5 are at different heights, and it is easier to grasp the first handle portion 32 or the second handle portion 52 when tearing them off, making them easier to tear off. At the same time, there is a height difference between the first rubber layer 2 and the second rubber layer 4, forming a stepped structure. The stepped structure, i.e., the stepped bonding area formed by the top bonding surface of the first rubber layer 2 and the side bonding surface of the second rubber layer 4, can provide a stable limit and positioning function during the assembly of the magnet, making it easier to assemble the magnet and the subsequent assembly of the coil.

As shown in FIG. 2 , in this embodiment, the second handle portion 52 and the second annular portion 51 have a notch 53 at the connection position, and the notch 53 is located on one side of the second handle portion 52, and the other side of the second handle portion 52 does not have a notch 53. That is, the strength of the two sides of the second handle portion 52 and the second annular portion 51 at the connection position is different, and the strength of the side with the notch 53 is relatively poor. When tearing off the second release film 5, the second handle portion 52 is forced along the side biased toward the notch 53, causing the notch 53 to tear on one side, and then the second release film 5 is gradually torn off along the circumference of the second annular portion 51.

In other embodiments, there may be two notches 53, located on both sides of the connection position between the second handle portion 52 and the second annular portion 51, so that the second handle portion 52 can drive the second release film 5 to be torn off by applying force to either side. Alternatively, there may be no notch 53, so that the second handle portion 52 can also drive the second release film 5 to be torn off by applying force in the radial direction.

As shown in FIG. 2 , in this embodiment, there are two second handles 52, and the two second handles 52 extend toward each other from opposite positions on the inner circumference of the second annular portion 51. In other words, the starting positions of the two second handles 52 are 180° opposite to each other on the inner circumference of the second annular portion 51, and extend toward each other respectively. Preferably, the extension length is approximately the radius length of the inner circumference of the second annular portion 51, that is, the extension ends of the two second handles 52 almost touch each other. Therefore, the second release film 5 can be torn off through any second handle 52, which improves the operational flexibility.

In an optional implementation, the two second handles 52 are connected at the extension end, or in other words, the two second handles 52 are connected into one body. In other words, the inner circumference of the second annular portion 51 is a circumference, and the second handle 52 is a chord of the circle. Therefore, applying force to the second handle 52 along the axial direction of the second annular portion 51 can also drive the second release film 5 to be torn off.

In another optional implementation, as shown in FIG5 , the second handle portion 52 has multiple second handle portions 52, and the plurality of second handle portions 52 extend toward each other from the inner periphery of the second annular portion 51 at intervals and opposite positions. In this implementation, the second release film 5 can also be torn off by any second handle portion 52.

As shown in Figures 1 and 4, in this embodiment, the first handle portion 32 is provided with an identification portion 6, and the identification portion 6 is used to detect the tearing state of the first release film 3. The identification portion 6 can be identified by the automatic machine to determine whether the first release film 3 has been torn off. The identification portion 6 can have information that can be identified by the identification device, such as a barcode, a two-dimensional code or other identification information. Optionally, the identification portion 6 can be located at the end of the first handle portion 32. In this embodiment, the identification portion 6 can be, but is not limited to, a coating, a sticker, and materials of different colors that can provide identification for detecting the tearing state of the first release film 3.

As shown in Figures 1 and 4, in this embodiment, the base film 1 includes a main body 11 and a third handle portion 12, and the third handle portion 12 extends outward from the periphery of the main body 11. In the axial direction, the first handle portion 32 of the first release film 3 is superimposed on one side of the third handle portion 12, and the first handle portion 32 and the third handle portion 12 are bonded through the third adhesive layer 7. Among them, the outer contour size of the main body 11 is greater than or equal to the outer circumference size of the first adhesive layer 2, so that the first adhesive layer 2 and the release film on the first adhesive layer 2 can be completely placed on the base film 1. As a result, the film assembly has integrity and is easier to move between processes. Preferably, the outer contour of the main body 11 is also circular, and the size is slightly larger than the size of the first adhesive layer 2.

The film-mounting assembly of this embodiment can be used for assembly and coil. When the first release film is torn off and the magnet is mounted, the second release film is retained on the second adhesive layer, and the first release film and the second release film can be cut from the same raw material, which not only saves costs but also improves the success rate of film tearing and the assembly quality of the product.

As shown in Figure 6, it is a schematic diagram of an assembly method of an embodiment of the present invention. The assembly method can be used to assemble magnets and coils. The assembly method includes:

S100, providing a membrane patch assembly. The structure of the membrane patch assembly can be the same as the structure of any membrane patch assembly in the above-mentioned embodiments of the present invention.

S200, tear off the first release film 3 of the film sticker assembly to expose the first adhesive layer 2. The first release film 3 can be torn off by the first handle 32, which can be done by automatic equipment or manual operation.

S300, stick the magnet on the first adhesive layer 2.

S400, tear off the second release film 5 of the film sticker assembly to expose the second adhesive layer 4. The second release film 5 can be torn off by the second handle 52. In this step, the second release film 5 is separated from the second adhesive layer 4 by tearing off the second handle 52; wherein, the strength of the second handle 52 and the second annular part 51 at the connection position is different, and the strength of the side with the notch 53 is poor. In step S400, the second handle 52 is applied along the side biased toward the notch 53, causing the notch 53 to tear, and then the second release film 5 is gradually torn off along the circumference of the second annular part 51.

S500, stick the coil on the second adhesive layer 4.

Among them, the magnet is an annular magnet, and the cross-sectional shape and size of the magnet are the same as the shape and size of the first rubber layer 2, so that the magnet can be completely attached to the first rubber layer 2. The coil is an annular coil, and the cross-sectional shape and size of the coil are the same as the shape and size of the second rubber layer 4, so that the coil can be completely attached to the second rubber layer 4. In other words, after the magnet is attached to the first rubber layer 2, the first rubber layer 2 is completely covered by the magnet, the second rubber layer 4 has no exposed part, and the coil is similar to the second rubber layer 4.

As shown in FIG. 7, in this embodiment, after step S300 and before step S400, it may also include:

S310, let it stand to allow the magnet to fully bond with the first adhesive layer 2.

The static time can be determined according to the actual situation. Before the static time, a pressure holding process can be used to assist the bonding of the magnet and the first adhesive layer 2. This embodiment does not limit this.

The assembly method of this embodiment is based on assembling magnets and coils with film-mounted components, which can optimize the assembly process, improve the assembly success rate of magnets and coils, and improve the yield rate of products.

The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For technical personnel in this field, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

1: Base film 11: Main body 12: Third handle 2: First adhesive layer 3: First release film 31: First ring 32: First handle 4: Second adhesive layer 5: Second release film 6: Logo 7: Third adhesive layer

Claims (9)

A film patch assembly comprises: a base film (1); a first adhesive layer (2) formed into a ring shape and disposed on the base film (1); a first release film (3) comprising a first annular portion (31) and a first handle portion (32), wherein the first annular portion (31) is bonded to the first adhesive layer (2), and the first handle portion (32) extends outward from the outer periphery of the first annular portion (31); a second adhesive layer (4) disposed on the base film (1), wherein the second adhesive layer (4) is disposed on the first adhesive layer (2); and The second release film (5) comprises a second annular portion (51) and a second handle portion (52), wherein the second annular portion (51) is bonded to the second adhesive layer (4), and the second handle portion (52) extends inward from the inner circumference of the second annular portion (51); wherein the second release film (5) is located inside the first release film (3), and the inner circumference size of the first annular portion (31) is the same as the outer circumference size of the second annular portion (51). A film patch assembly as described in claim 1, wherein the second adhesive layer (4) is formed into a ring shape, and the inner circumference size of the second adhesive layer (4) is the same as the inner circumference size of the second annular portion (51), and the outer circumference size of the second adhesive layer (4) is the same as the outer circumference size of the second annular portion (51). A film patch assembly as described in claim 1, wherein the first adhesive layer (2), the second adhesive layer (4), the first annular portion (31) and the second annular portion (51) are in the shape of an annulus. A film-mounted assembly as described in claim 1, wherein the thickness of the second adhesive layer (4) is greater than or equal to the thickness of the first adhesive layer (2). A film patch assembly as described in claim 1, wherein the second handle portion (52) and the second annular portion (51) have a notch (53) at the connection position. A film patch assembly as described in claim 1, wherein the second handle portion (52) has two parts, and the two second handle portions (52) extend toward each other from opposite positions on the inner periphery of the second annular portion (51). A film patch assembly as described in claim 1, wherein the second handle portion (52) has a plurality of second handle portions (52), and a plurality of the second handle portions (52) extend toward each other from the inner periphery of the second annular portion (51) at intervals and relative positions. A film sticker assembly as described in claim 1, wherein the first handle portion (32) is provided with an identification portion (6), and the identification portion (6) is used to detect the tearing state of the first release film (3). A film patch assembly as described in claim 1, wherein the base film (1) includes a main body portion (11) and a third handle portion (12), the third handle portion (12) extends outward from the periphery of the main body portion (11), the first handle portion (32) of the first release film (3) is located on the third handle portion (12), and the first handle portion (32) and the third handle portion (12) are bonded to each other via a third adhesive layer (7).

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