TWI755923B - Protective film - Google Patents

Abstract

A protective film is disclosed. One side of the protective film is a stick surface. A plurality of bumps is formed on the stick surface of one corner of the protective film. A ratio of a height of each the bump to a shortest distance from a center of each the bump to an edge of the corner is 0.002 or less. In this way, the plurality of bumps will lift up the corner of the protective film, so that a space is formed between the corner and the surface of a surface of a protective object and the edge of the corner does not stick to the surface of the protective object, thereby achieving convenience for the operator tearing off the protective film from the corner.

Description

protective film

The present invention relates to a protective film, in particular to a protective film with a plurality of bumps formed on the adhesive surface of one corner of the protective film to facilitate the operator to tear off the protected object.

Generally speaking, a common protective film is used to attach to the protected object to protect the surface of the protected object and avoid scratches. In the prior art, in order to facilitate the removal of the protective film, the protective film is often included in the protective film. A release tearing handle is added at one corner, and a corner of the protective film is lifted by pulling the releasing tearing handle, thereby facilitating the removal of the protective film.

However, in the above-mentioned method of adding a release tearing hand, since an additional component is added, the manufacturing steps become complicated, which also increases the production cost; on the other hand, since the releasing tearing hand is easily pulled due to external factors, Therefore, the protective film may be torn off during the handling or transportation of the protected object.

In view of the foregoing, the conventional protective film still has considerable defects in the removal mechanism. Therefore, the present invention improves the deficiencies of the prior art by designing a protective film structure, so as to meet the requirements of protecting the protected object and reduce the The production cost is reduced, and the implementation and utilization in the industry are further improved.

In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a protective film, which forms a plurality of bumps on the adhesive surface of one corner of the protective film, thereby solving the above-mentioned problems of the conventional protective film.

According to the above purpose, the present invention provides a protective film, one side of which is an adhesive surface, a plurality of bumps are formed on the adhesive surface of one corner of the protective film, and the height of each bump and the distance between the center of the bump and the edge of the corner are The ratio of the shortest distance is 0.002 or less.

Preferably, the height of each bump is 0.002 mm to 0.004 mm.

Preferably, the shortest distance between the center of each convex point and the edge of the corner is 2 mm to 7 mm.

Preferably, the distance between the centers of two adjacent bumps is 2 mm to 7 mm.

Preferably, among the bumps in the corners of the protective film, the center of the bumps closest to the apex of the corner is 2.8 mm to 9.9 mm from the apex of the corner.

Preferably, the bump has an adhesive surface, and the adhesive surface adheres to the plane of the protected object in a surface-contact manner.

Preferably, a concave portion is formed on the other side of the protective film relative to the adhesive surface corresponding to the position of each of the bumps, respectively.

Based on the above, the protective film of the present invention forms a plurality of bumps on the adhesive surface of one corner of the protective film, and the bumps can support the adhesive surface of the corner from the surface of the protected object, leaving only the convexities. Point contact or stick to the surface of the protected object, and a space is formed between the corner edge of the raised protective film and the surface of the protected object without sticking to the surface of the protected object, so that the operator can easily remove the protection from the corner Membrane efficacy.

In order to facilitate the understanding of the features, contents and advantages of the present invention and the effects that can be achieved, the present invention is hereby described in detail as follows in the form of an embodiment with the accompanying drawings, and the drawings used therein are only for the purpose of The representations and auxiliary descriptions are not necessarily the real proportions and precise configurations after the implementation of the present invention. Therefore, the proportions and configuration relationships of the attached drawings should not be interpreted or limited to the scope of rights of the present invention in actual implementation.

In the drawings, for the sake of clarity, the area, thickness or width of each feature and other objects in the protective film of the present application are enlarged for illustration. Throughout the specification, the same reference numbers refer to the same or similar elements. It will be understood that, throughout the specification, when an element such as a layer, film, region, or any element is referred to as being "on," "adhered to," or "attached" to another element, it can be directly on the other element on or connected to another element, or intervening elements may also be present. In contrast, when an element is referred to as being "directly on," "directly attached to," or "directly attached to" another element, there are no intervening elements present.

Unless otherwise defined, all terms (including 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. It will be further understood that terms such as those defined in commonly used dictionaries should be construed as having meanings consistent with their meanings in the context of the related art and the present invention, and are not to be construed as idealized or excessive Formal meaning unless expressly so defined herein.

Please refer to Figures 1 to 3 together; Figure 1 is a schematic cross-sectional view of the first embodiment of the protective film of the present invention; Figure 2 is a partial schematic view of the first embodiment of the protective film of the present invention; Figure 3 The figure is a top view of the first embodiment of the protective film of the present invention.

As shown in the figure, the protective film 100 of the present invention has two opposite sides, one side of the protective film 100 is the sticking surface S1, and the other side of the protective film 100 is the outer surface S2. Wherein, the protective film 100 is used to adhere to the surface of the protected object 200 . It is worth mentioning that a plurality of bumps 110 are formed on the sticking surface S1 of one corner C of the protective film 100 . It should be noted that each bump 110 has a bump height H from the sticking surface S1 to the vertex of the bump 110 , and each bump 110 has a bump center P, and the edge of the bump center P and the corner C has A shortest distance D1; wherein, the ratio of the bump height H to the shortest distance D1 is less than 0.002. That is to say, the ratio of the bump height H to the shortest distance D1 should be: H/D1≦0.002.

Incidentally, the protective film 100 of the present invention can be made of materials such as PVC (polyvinyl chloride), PET (polyethylene terephthalate) and the like. In addition, the adhesive surface S1 of the protective film 100 can be formed by using silicone glue as an adhesive, and the protected object 200 corresponding to the protective film 100 can be the surface of the display module or the surface of a specific part of other modules or devices; however, the above-mentioned It is only an illustrative example, not a limitation.

Based on the above, the present invention forms a plurality of bumps 110 on one corner C of the protective film 100, so that the corner C of the protective film 100 is supported from the surface of the attached protected object 200 by the bumps 110, Further, a space G is formed between the edge of the corner C with the bumps 110 and the surface of the protected object 200 to which it is attached, and in a part of the space G, part of the surface of the sticking surface S1 is not connected to the protected object. 200 are adhered to each other; thereby, it is helpful for the operator to tear off the protective film 100 from the surface of the protected object 200 from the edge of the corner C of the protective film 100, and the edge of the corner C of the protective film 100 is not connected to the protected object 200. parts of the surface that are adhered to each other. It is worth mentioning that a surface of the bump 110 corresponding to the surface of the protected object 200 may still be a part of the sticking surface S1, that is, the bump 110 is still sticky; therefore, in the partial area of the space G, The sticking surface S1 with the bumps 110 is still adhered to the protected object by the bumps 110, so that the protective film 100 can be effectively and stably disposed on the surface of the protected object 200 to provide complete protection Effect.

In detail, as shown in FIG. 1 , the bumps 110 of the protective film 100 of the present invention have a bump height H, and the bump height H of the bumps 110 will affect how the corner C of the protective film 100 is attached from The height of the support on the surface of the protected object 200; the bump height H also affects the distance between the edge of the corner C with the bump 110 and the space G formed between the surface of the attached protected object 200 size. Furthermore, if the bump height H of the bump 110 is higher, the height of the corner C of the protective film 100 from the surface of the attached protected object 200 is also higher; similarly, The larger the space G is formed between the edge of the corner C with the bumps 110 and the surface of the attached protected object 200 .

The above-mentioned bump height H and space G may cause the following problems. When the height of the corner C of the protective film 100 raised from the surface of the attached protected object 200 is higher, the edge of the corner C of the protective film 100 and the surface of the attached protected object 200 are The space G formed between them is larger. At this time, foreign objects (such as dust, particles) can easily enter the surface of the protected object 200 from the space G formed between the edge of the corner C and the surface of the protected object 200 to which it is attached; , the foreign matter may be stuck between the protective film 100 and the protected object 200 , which may cause damage to the surface of the protected object 200 .

Also, when the height of the corner C of the protective film 100 is higher from the surface of the attached protected object 200, a gap is formed between the edge of the corner C and the attached surface of the protected object 200. The larger the space G is. In this case, the corner C of the protective film 100 will be easily lifted due to other external force factors during handling or transportation.

In view of this, the bump height H of each bump 110 formed by the corner C in the protective film 100 of the present invention is preferably 0.002 mm to 0.004 mm; thereby, the bump 110 can be avoided. The bump height H is too high, thereby causing foreign matter to enter between the protective film 100 and the surface of the protected object 200; or, the corner C of the protective film 100 will be easily handled or transported due to other external forces during the process. A situation caused by factors occurs.

In addition, as shown in FIG. 2, the bump 110 of the protective film 100 of the present invention has a bump center P, and the edge of the bump center P to the corner C has a shortest distance D1; and the bump center of the bump 110 has a shortest distance D1. The shortest distance D1 between P and the edge of the corner C will affect whether the edge of the corner C can be supported by the bumps 110, and affect the formation of the space between the protective film 100 and the surface of the protected object 200. G.

For example, if the shortest distance D1 between the center P of the bump 110 and the edge of the corner C is too large, it means that the bump 110 is too far from the edge of the corner C, so the bump 110 cannot reach the corner C edge up. Since the edge of the corner C is not supported, the operator cannot tear the protective film 100 from the space between the edge of the corner C and the surface of the protected object 200 . Conversely, if the shortest distance D1 between the center P of the bump 110 and the edge of the corner C is too small, it means that the bump 110 is too close to the edge of the corner C; although the bump 110 can still reach the edge of the corner C However, since the center P of the bump 110 is too close to the edge of the corner C, the space G between the edge of the corner C and the surface of the attached protected object 200 is limited.

In view of this, the shortest distance D1 from the center P of the bumps 110 formed by the corners C in the protective film 100 of the present invention to the edge of the corners C is preferably 2 mm to 7 mm; It can avoid that the distance between the bump 110 and the edge of the corner C is too far, so that the edge of the corner C cannot be supported, or the distance between the bump 110 and the edge of the corner C is too close to cause the edge of the corner C to be supported. The situation where the space G is limited occurs. The above configuration can also prevent foreign matter from entering between the protective film 100 and the surface of the object to be protected 200 or the corner C of the protective film 100 will be easily lifted due to other external forces during handling or transportation. situation occurs.

Based on the above, the ratio between the height A of the bumps and the shortest distance D1 of the bumps 110 may be 0.002 or less, preferably 0.001 or less. When the aforementioned conditions are met, it can ensure that the edge of the corner C can be properly propped up so that the operator can tear the protective film 100 off easily, and it is not easy to be lifted due to other external forces during handling or transportation. For example, when the bump height H is preferably 0.002 mm to 0.004 mm, if the shortest distance D1 is too far, it will still cause the edge of the corner C to be unable to be properly supported, such as in the protective film The closer the corner C of the 100 is to the edge, it may still have no space G, and it is not easy for the operator to tear up the protective film 100; on the contrary, when the bump height H is preferably 0.002 mm to 0.004 mm, and If the shortest distance D1 is too close, it is easy to be lifted due to other external force factors in the process of handling or transportation. For another example, when the shortest distance D1 is preferably 2 mm to 7 mm, if the height H of the bump is too large, it may cause an excessive space G, which is easy to be damaged due to other external forces during handling or transportation. On the contrary, when the shortest distance D1 is preferably 2 mm to 7 mm, and if the height H of the bump is too small, it will still cause the edge of the corner C to be unable to be properly supported, and it is not easy for the operator to protect the The film 100 is torn off.

In addition, the convex point 110 located in the corner C and closest to the vertex T of the corner C has a center P of the convex point from the vertex T of the corner C to form a farthest distance D2, which may be 2.8 to 9.9 mm. That is to say, it is assumed that the two sides of the vertex T of the corner C are two sides that are perpendicular to each other, and the imaginary straight line formed by the center P of the convex point and the vertex T will be the same as the two sides of the vertex T. The included angle of the sides is 45 degrees. In this way, it is further ensured that the edge of the corner C can be properly supported, and is not easily lifted due to other external forces during handling or transportation, and foreign objects are not easily entered into the space G.

On the other hand, as shown in FIG. 2 , there is a distance D3 between the bump centers P of two adjacent bumps 110 of the protective film 100 of the present invention; for example, when two adjacent bumps When the spacing distance D3 between the centers P of the bumps 110 is too close, most of the spaces G supported by the bumps 110 will overlap each other, thereby reducing the benefit of forming the bumps 110; When the spacing distance D3 between the centers P of the bumps 110 is too far, the spaces G supported by the bumps 110 are too scattered and have no intersection, resulting in a part of the sticking surface S1 between the bumps 110 still sticking to the surface. On the surface of the protected object 200 , the bumps 110 are not fully supported.

In view of this, the distance D3 between the centers of two adjacent bumps 110 formed by the corner C in the protective film 100 of the present invention is preferably 2 to 7 mm.

Please refer to FIG. 4 , which is a schematic cross-sectional view of the second embodiment of the protective film of the present invention. In this embodiment, the configuration and structure of the elements with the same reference numerals are the same as or similar to those in the foregoing embodiment, and the same or similar parts will not be repeated here.

As shown in the figure, the main difference between the present embodiment and the first embodiment is that the protective film 100 of the present invention is opposite to the outer surface S2 of the sticking surface S1 , and the concave portions 120 are formed at the positions corresponding to the bumps 110 . The concave portion 120 can be used for the operator to determine the position of the corner of the protective film 100 with the bumps 110 .

Therefore, when the operator touches or sees the concave portion 120, he can know that there is a corner with the convex point 110, so that the protective film 100 can be moved from the edge of the corner supported by the convex point 110 to the protected object 200 intuitively. surface removed.

Please refer to FIG. 5 , which is a schematic cross-sectional view of the third embodiment of the protective film of the present invention. In this embodiment, the configuration and structure of the elements with the same reference numerals are the same as or similar to those in the foregoing embodiment, and the same or similar parts will not be repeated here.

As shown in the figures, the present embodiment is mainly different from the previous embodiments, which are mainly different from the bumps 110 shown in FIG. 1 (first embodiment) and FIG. 4 (second embodiment), which are in point contact with the plane of the protected object 200 . 5. The bump 110A shown in FIG. 5 (third embodiment) is a plane surface of the object to be protected 200 pasted in a surface contact manner.

In view of the above, in FIG. 5 , a side of the bump 110A corresponding to the surface of the protected object 200 is still a part of the sticking surface S1 , so the bump 110A can be attached to the surface of the protected object 200 by surface contact. Compared with the point contact method, the bump 110A adheres to the plane of the protected object 200 in a surface contact method, and the area of the bump 110A in contact with the protected object 200 is larger, thereby achieving a better adhesion effect, so that the raised corner edges are Less prone to handling or being lifted during shipping. In addition, the bumps 110A of the mining face contact method can still hold up the space, so in addition to the operator can still tear off the protective sticker from the propped up corner edge, it can still make the protective film 100 stably set in the receiving area. Protected object 200. Of course, the above is only an example, not a limitation.

Incidentally, under proper application, the bump 110A of this embodiment is attached to the plane of the protected object 200 in a surface contact manner, and it may not have the concave portion 120 as shown in FIG. 4 .

Based on the above, the protective film of the present invention forms a plurality of bumps on the adhesive surface of one corner of the protective film, and the bumps can support the adhesive surface of the corner from the surface of the protected object, so that only the The remaining bumps are pasted on the surface of the protected object. In this way, after the protective film is lifted up, a space is formed between the edge of the corner and the surface of the protected object and is not adhered to the surface of the protected object, so that the operator can easily tear off the protective film from the corner without external force The effect of being set off by factors.

The above-mentioned embodiments are only to illustrate the technical ideas and characteristics of the present invention, and the purpose is to enable those who are familiar with the art to understand the content of the present invention and implement it accordingly. It should not be used to limit the patent scope of the present invention. That is, all equivalent changes or modifications made according to the spirit disclosed in the present invention should still be covered within the patent scope of the present invention.

100: Protective film 110, 110A: bump 120: Recess 200: Protected Object C: corner D1: shortest distance D2: the longest distance D3: separation distance G: space H: bump height P: bump center S1: Adhesive side S2: outer surface T: vertex

FIG. 1 is a schematic cross-sectional view of the first embodiment of the protective film of the present invention. FIG. 2 is a partial schematic view of the first embodiment of the protective film of the present invention. FIG. 3 is a top view of the first embodiment of the protective film of the present invention. FIG. 4 is a schematic cross-sectional view of the second embodiment of the protective film of the present invention. FIG. 5 is a schematic cross-sectional view of a third embodiment of the protective film of the present invention.

100: Protective film

110: bump

200: Protected Object

G: space

H: bump height

S1: Adhesive side

S2: outer surface

Claims (7)

A protective film, one side of which is an adhesive surface, a plurality of bumps are formed on the adhering surface of one corner of the protective film, the height of each bump and the distance between the center of each bump and the edge of the corner The ratio of the shortest distance is 0.002 or less. The protective film according to claim 1, wherein the height of each bump is 0.002 mm to 0.004 mm. The protective film according to claim 1, wherein the shortest distance from the center of each of the bumps to the edge of the corner is 2 mm to 7 mm. The protective film according to claim 1, wherein the distance between the centers of two adjacent bumps is 2 mm to 7 mm. The protective film as claimed in claim 1, wherein the center of the convex point closest to the apex of the corner among the bumps in the corner of the protective film is 2.8 mm to 9.9 mm from the apex of the corner. The protective film of claim 1, wherein the bump has an adhesive surface, and the adhesive surface adheres to the plane of the protected object in a surface-contact manner. The protective film as claimed in claim 1, wherein the other surface of the protective film opposite to the adhesive surface forms a concave portion corresponding to the position of each of the convex points.

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