JP2008115287A - Protection film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protection film with a shape not protruding from a surface to be protected, and readily peelable without using a separate component. <P>SOLUTION: This protection film 11 for attaching on a surface to be protected is composed of a film main body 12 and a pressure-sensitive adhesion part 13 to make the film main body 12 attached on the surface to be protected and disposed on the rear surface of the film main body 12. The film main body 12 has a size equal to or a little smaller than the surface to be protected, and is formed with a plurality of nearly hemispherical projecting parts 14 of a size that can be picked with fingers through around whole area thereof. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a protective film attached to a protected surface.

  For example, some recent automobiles are equipped with a liquid crystal display device that displays an operating state of an audio device or an air conditioner. A protective film is affixed to the display surface (protected surface) of the liquid crystal display of this liquid crystal display device so that it is not particularly damaged during the assembly process.

  FIG. 6 is an exploded perspective view schematically showing the liquid crystal display device 1 during the assembly process. In the liquid crystal display device 1, a rectangular box-shaped liquid crystal display 2 is provided on the upper surface of a substantially rectangular box-shaped device body 3, and a panel 5 having an opening 4 surrounding the display surface of the liquid crystal display 2 (upper surface in FIG. 6). Is configured to be mounted on the apparatus main body 3 by screws 6. A protective film 7 is attached to the display surface of the liquid crystal display 2 in advance so as to cover the entire surface of the display surface. Therefore, when the panel 5 is attached to the apparatus body 3, the display surface and the protective film 7 are exposed from the opening 4 of the panel 5. The protective film 7 is peeled off at the shipment stage of the vehicle after the liquid crystal display device 1 is assembled.

  As shown in FIG. 7, the protective film 7 is provided on a film main body 8 made of, for example, a PET (polyethylene terephthalate) resin having a smooth surface, and on the back surface of the film main body 8, and can be peeled off from the protected surface. It is comprised from the adhesion part 9 which consists of an adhesive.

  The size of the protective film 7 is basically the same as that of the display surface of the liquid crystal display 2. However, the protective film 7 is not easy to peel off because there is no part for removing the protective film 7. Therefore, a knob portion 7a that partially protrudes from the display surface is provided integrally with the protective film 7 so that the knob portion 7a can be pinched (see Patent Document 1).

On the other hand, when the protective film 7 is not provided and the protective film 7 is peeled off, a tape having a stronger adhesive strength than the adhesive portion 9 is attached to the upper surface of the protective film 7 and the protective film 7 is displayed together with the tape. Peeling from the surface is also done.
Japanese Patent Application Laid-Open No. 2006-155542

However, in the method of providing the knob portion 7 a, when the panel 5 is attached to the apparatus body 3, the knob portion 7 a is bent downward by the peripheral edge portion of the opening 4 of the panel 5, and the side surface of the liquid crystal display 2 is The panel 5 is sandwiched between the peripheral edge of the opening 4. Therefore, although the knob part 7a is provided on the protective film 7, it cannot be pinched.
On the other hand, in the method of peeling off the protective film 7 from the display surface together with the tape having a strong adhesive force, the protective film 7 must be peeled off using separate parts such as a tape, which is troublesome.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a protective film that does not protrude from the surface to be protected and can be easily peeled off without using a separate part. is there.

  In order to achieve the above object, the protective film of the present invention has a size that is the same as or slightly smaller than that of the protected surface in the protective film attached to the protected surface in order to protect the protected surface. A film main body having a plurality of protrusions of a size that can be pinched with a finger over almost the entire surface thereof, and a back surface of the film main body, and the film main body is affixed to the protected surface. It is characterized by comprising an adhesive part.

  According to the protective film of the present invention, the protective film attached to the surface to be protected can be peeled off by pinching the protrusion formed mainly on the film with a finger. In this case, the size of the film main body is the same as or slightly smaller than the surface to be protected, and the protrusions are formed on the surface of the film main body, so that the protective film does not protrude from the surface to be protected. Can do. Furthermore, the protective film can be easily peeled off without using a separate part since the protrusion formed on the film main body can be pinched with a finger.

  In addition, since a plurality of protrusions are formed on almost the entire surface of the film main body, the impact resistance of the entire protective film can be improved. In addition, since a plurality of protrusions are formed on almost the entire surface of the film main body, it becomes easy to notice that the protective film is stuck on the protected surface, and forgetting to peel off can be prevented.

  In addition, since multiple protrusions are formed on almost the entire area of the film, it is easy to apply impacts from the slanting direction other than the direction perpendicular to the protected surface via the protrusions. It can be endured by the adhesive portion that attaches the film main body to the surface, and it is difficult to cause rubbing or the like with the protected surface, so that the protected surface can be more reliably protected.

Hereinafter, the present invention is applied to a protective film applied to protect a display surface (protected surface) of a liquid crystal display of this device during an assembly process of a liquid crystal display device mounted on an automobile. The embodiment will be described with reference to FIGS. 1 to 5.
First, a first embodiment of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 is a cross-sectional view of the protective film 11 of the present embodiment. FIG. 2 is a top view of the protective film 11.

As shown in FIG. 1, the protective film 11 includes a film main body 12 and an adhesive portion 13 provided on the entire back surface (lower surface) of the film main body 12.
The film main body 12 is made of a cellular cushion sheet having a plurality of independent bubbles, and has the same size as or slightly smaller than the display surface of a liquid crystal display (not shown). Although not shown in detail, the cellular cushion sheet is composed of, for example, a plastic film having a plurality of protrusions 14 and a flat plastic film to be bonded to the back surface of the film. By laminating these two films, a sealed air chamber 15 (bubble) is formed inside the protrusion 14.

Each protrusion 14 has a substantially hemispherical shape. The protrusion 14 has a size that can be pinched with a finger, for example, a diameter of 7 to 32 mm and a height of 4 to 15 mm, preferably a diameter of 10 to 15 mm and a height of 10 to 15 mm. . Further, as shown in FIG. 2, the protrusions 14 are arranged in a staggered manner over almost the entire surface of the film main body 12.
On the other hand, the adhesion part 13 is comprised with the adhesive which can peel the film main body 12, after making the film main body 12 stick on the display surface of the said liquid crystal display.

Next, the operation and effect of this embodiment will be described.
First, the protective film 11 is affixed on the display surface of a liquid crystal display. Next, a panel (not shown) having an opening surrounding the display surface is attached to an apparatus main body (not shown) to which the liquid crystal display is attached. The liquid crystal display device thus assembled is attached to a vehicle (not shown).
And at the shipping stage of the vehicle, the protective film 11 is peeled off by pinching the protrusion 14 of the protective film 11 with a finger.

  In this case, the size of the film main body 12 is the same as or slightly smaller than the display surface, and the protrusion 14 is formed on the surface of the film main body 12, so that the protective film 11 does not protrude from the display surface. can do. Therefore, when the panel 5 is attached to the apparatus main body 3 as in the prior art, a part of the protective film 7 (knob portion 7a) is sandwiched between the side surface of the liquid crystal display 2 and the peripheral portion of the opening 4 of the panel 5. Thus, the problem that the protective film 7 becomes difficult to peel does not occur, and the protective film 11 can be easily peeled even after the panel is attached.

Furthermore, since the protective film 11 can be peeled off by pinching the protrusions 14 formed on the film main body 12 with a finger, it can be easily peeled off without using another component such as a tape.
In addition, since a plurality of protrusions 14 are formed on almost the entire surface of the film main body 12, the impact resistance of the entire protective film 11 can be improved. In addition, since a plurality of protrusions 14 are formed on almost the entire surface of the film main body 12, it becomes easy to notice that the protective film 11 is stuck on the display surface, and forgetting to peel off can be prevented.

  In addition, since a plurality of protrusions 14 are formed in almost the entire area of the film main body 12, an impact can be easily applied from the licking direction other than the direction orthogonal to the display surface via the protrusions 14, The adhesive portion 13 that attaches the film main body 12 to the display surface can withstand the surface and can hardly be rubbed with the display surface, so that the display surface can be more reliably protected.

  FIG. 3 shows a second embodiment of the present invention, and different points from the first embodiment will be described. The same applies to the other embodiments, and the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The second embodiment is different from the first embodiment in the shape of the protrusion 23 formed on the film main body 22 of the protective film 21. That is, the protrusion 23 of the second embodiment has a shape extending in parallel with one side of the film main body 22. Specifically, one protrusion 23 is a horizontally placed semi-cylindrical shape, and both ends in the longitudinal direction are formed round. The protrusions 23 have such a size that can be pinched with fingers from both sides in the direction orthogonal to the longitudinal direction, and a plurality of protrusions 23 are formed on the film main body 22 in this embodiment.
Also in the protective film 21 having the above-described configuration, the same effect as that of the protective film 11 of the first embodiment can be obtained.

FIG. 4 shows a third embodiment of the present invention, and the film main body 32 of the protective film 31 is different from the film main body 12 of the first embodiment. That is, the film main body 32 of this embodiment is composed only of a plastic film on which a plurality of substantially hemispherical protrusions 33 are formed. Therefore, the lower surface of the projection 33 is opened, and a space 34 communicating with the outside is formed inside the projection 33.
The protective film 31 includes the film main body 32 and the adhesive portion 13 provided on the flat surface of the back surface of the film main body 32.

Also in the protective film 31 of the said structure, the effect similar to the protective film 11 of 1st Embodiment can be acquired.
Furthermore, since the film main body 32 of this embodiment is a structure which does not provide the flat film shown in 1st Embodiment, the number of parts of the film main body 32 and the production man-hour of the film main body 32 can be reduced.

  FIG. 5 shows a fourth embodiment of the present invention, and the film main body 42 of the protective film 41 is different from the film main body 12 of the first embodiment. That is, the film main body 42 of the present embodiment is configured such that the inside of the substantially hemispherical projection 43 is solid, and a plurality of the projections 43 are formed of a plastic film integrally formed. Has been.

Also in the protective film 41 having the above configuration, the same effect as that of the protective film 11 of the first embodiment can be obtained.
Furthermore, by making the inside of the projection 43 of the film main body 42 of the present embodiment a solid configuration, for example, even if a sharp object hits the protective film 41, the projection 43 is not easily damaged, and the display surface is protected. Can be further enhanced.

The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications and expansions are possible.
The arrangement of the projections 14, 33, and 43 that are staggered in the first, third, and fourth embodiments may be arbitrarily changed. Moreover, the shape of these protrusions 14, 33, 43 may be changed to a polygonal column such as a cylinder, a triangular column, or a quadrangular column or a polygonal pyramid such as a cone, a triangular pyramid, or a quadrangular pyramid, or a combination thereof.
The protrusion 23 of the second embodiment may be a polygonal column.

In each of the above embodiments, the film main body may be made of a colored material to further enhance the effect of preventing forgetting to remove the protective film.
Moreover, although the said embodiment applied and demonstrated to the protective film affixed during the assembly process of a liquid crystal display, this invention is applicable also to the surface of the product which has another to-be-protected surface. Furthermore, the material of the above-described component part can be changed as appropriate.

The longitudinal cross-sectional view of the protective film which shows the 1st Embodiment of this invention Top view of protective film FIG. 2 equivalent view showing the second embodiment of the present invention FIG. 1 equivalent view showing a third embodiment of the present invention FIG. 1 equivalent view showing a fourth embodiment of the present invention Perspective view of device body, liquid crystal display, protective film, panel, screw showing conventional example 1 equivalent diagram

Explanation of symbols

  In the drawings, 11, 21, 31, and 41 are protective films, 12, 22, 32, and 42 are main films, 13 is an adhesive portion, and 14, 23, 33, and 43 are protrusions.

Claims (1)

In the protective film that is attached to the protected surface to protect the protected surface,
A film main body having a size the same as or slightly smaller than the surface to be protected, and formed with a plurality of protrusions of a size that can be pinched with fingers over almost the entire surface;
A protective film comprising a pressure-sensitive adhesive portion provided on a back surface of the film main body and attaching the film main body to the protected surface.

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