JP2000338604A - Portable screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable screen which can be rolled up compactly and carried in carrying, is made easily usable many times by affixing the screen to a perpendicular surface of a wall, partition board, etc., is lightweight and may be inexpensively manufactured. SOLUTION: This portable screen is constituted by mounting a tacky adhesive sheet 20 to be peelably affixed to the perpendicular surface 50 of a wall, partition board, etc., at a rear surface 12 of a screen film 10. The fixation force of the tacky adhesive sheet 20 to fix the sheet to the rear surface 12 of the screen film 10 is made larger than the tacky adhesive force to affix the sheet to the perpendicular surface 50 to prevent the tacky adhesive sheet 20 from being held affixed to the perpendicular surface 50 at the time of removal of the screen film 10 from the affixation to the perpendicular surface 50. A release sheet 30 or the tacky adhesive sheet 20 is formed thick and the release sheet is provided with a turn-back sheet 40 adapted to allow the repetition of coating and peeling of the release sheet 30 to and from the tacky adhesive surface 22 by mounting its one end to the release sheet 30 and mounting the other end to the rear surface of the screen film so as to allow the easy peeling of the release sheet 30 peelably adhered to the tacky adhesive sheet 20 with fingertips.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable screen in which a screen film can be removably adhered to a vertical surface such as a wall or a partition plate many times.

[0002]

2. Description of the Related Art Conventionally, a double-sided adhesive tape has been attached to the back of a screen film so that the screen film can be attached to a vertical surface such as a wall or a partition plate. When detached from the surface, the double-sided adhesive tape often peels off from the back surface of the screen film and is left behind while being adhered to the vertical surface, and in this case, the double-sided adhesive tape is removed from the vertical surface It was often difficult. Further, when attaching the screen film to the vertical surface, since the release sheet covering the adhesive surface of the adhesive tape on the back surface of the screen film is thin,
In many cases, it is not easy to remove this with a fingertip. Furthermore, when the screen film is removed from the vertical surface and wound for reuse of the screen film, the release sheet that has been separated is often lost, and without the release sheet. There is a possibility that the adhesive sheet and the screen film adhere to each other when the film is wound, so that the screen film cannot be wound and stored or carried.

[0003]

SUMMARY OF THE INVENTION The present invention can be carried around a small wrap when it is carried,
An object of the present invention is to provide a portable screen which can be easily attached to a vertical surface such as a partition plate many times and used. Further, the present invention provides a portable screen which is extremely lightweight and can be manufactured at low cost.

[0004]

In order to achieve the above object, a portable screen according to the present invention, as shown in the drawing, can be peeled off on the back surface 12 of a screen film 10 and on a vertical surface 50 such as a wall or a partition plate. In a portable screen to which the adhesive sheet 20 to be attached is attached, the adhesive sheet 20 which is fixed to the back surface 12 of the screen film 10 and adheres in a peelable manner to the vertical surface 50 is attached to the vertical surface 50. When the adhesive film 20 is removed from the adhesive, the adhesive sheet 20 is peeled from the back surface 12 of the screen film 10 so that the adhesive film 20 does not remain attached to the vertical surface 50. Back 1
2 is larger than the adhesive force applied to the vertical surface 50. Further, the portable screen of the present invention can be peeled off from the adhesive surface 22 to cover the adhesive surface 22 attached to the vertical surface 50 of the adhesive sheet 20 as shown in the drawing to achieve the above object. The release sheet 30 to be adhered to the adhesive surface 2
It is formed thickly so that it can be peeled off from No. 2. In addition, in order to achieve the above object, the portable screen of the present invention attaches one end to the release sheet 30 and attaches the other end to the back surface 12 of the screen film 10 as shown in FIG. A folded sheet 40 is provided so that coating and peeling of the adhesive surface 22 can be repeated. Further, in order to achieve the above object, the portable screen of the present invention, as shown in FIG.
Is formed thick so that it can be easily peeled off from the adhesive surface 22 with a fingertip.

In the present invention, the screen film comprises:
As a reflective screen, for liquid crystal projector projection,
For overhead projector projection, projector projection,
Including slide film projection, etc., and also written with markers shown in Japanese Patent Application No. 10-180199, Utility Model Registration No. 30553351, etc. which the present inventor has already filed,
Includes a screen film that can also be erased and used as a whiteboard. The adhesive sheet is fixed to the back surface of the screen film by various known fixing means such as adhesion, adhesion, fusion, stapling, and tacking. In order to easily release the release sheet from the adhesive surface of the adhesive sheet with a fingertip, it is usually desirable to form the release sheet from a semi-rigid or soft synthetic resin film of 125 microns or more. The folded sheet is attached to the release sheet,
Desirably, a synthetic resin film which is attached to the back surface of the screen film and has a semi-hardness or softness of about 50 microns or more and which can be repeatedly bent many times. Furthermore, in order to easily peel the release sheet from the adhesive surface of the adhesive sheet with a fingertip,
Instead of forming the release sheet thick, the adhesive sheet may be formed thick about 1 mm or more to achieve the same purpose. In this case, when the release sheet is thin, the pressure-sensitive adhesive sheet is desirably a soft or foamed sheet.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. The portable screen of the present invention comprises a screen film 10, an adhesive sheet 20, and a release sheet 30.
And the folded sheet 40. The screen film 10 is obtained by laminating a transparent non-adhesive soft fluororesin film on a polarizing film (including a light reflecting film) for a liquid crystal projector, and the surface 11 can be used as a reflection type screen for a liquid crystal projector. A so-called white board, which can be freely written on the screen film surface 11 with a marker and easily erased by an eraser or the like during and after projection as well as before and after the projection of the liquid crystal projector, can also be used. One surface 21 of the adhesive sheet 20 is fixed to the screen film 10, and the other surface 22 forms an adhesive surface and is removably adhered to a vertical surface 50 such as a wall or a partition plate. One surface 31 of the release sheet 30 forms a known release surface that is releasably bonded to the adhesive surface 22, and the other surface 32 is fixed to the front half 41 of the folded sheet 40. The folded sheet 40 has a front half 41 fixed to the release sheet 30 and a rear half 42 fixed to the back surface 12 of the screen film 10. The front half 41 and the rear half 42 can be repeatedly bent. Accordingly, the screen film 10 wound (not shown) for carrying or storage is returned from the wound state as shown in FIGS. 1 and 2 to a flat plate, and then, as shown in FIG. When the film 40 is bent, the release surface 31 of the release sheet 30 is removed from the adhesive surface 22 of the adhesive sheet 20 and attached to a vertical surface 50 such as a wall or a partition plate. Surface 11 can be used. Also, the surface 11 of the screen film 10
Can be used as the above-described marker board before and after the projection as well as during the projection. When the use is completed, the adhesive sheet 20
The adhesive surface 22 is peeled off from the vertical surface 50 and adhered so as to cover the release surface 31 of the release sheet 30 as before. When the adhesive surface 22 is peeled off from the vertical surface 50, the adhesive sheet 2 is removed from the adhesive force of the adhesive surface 22 to the vertical surface 50.
The adhesive force of the first surface 21 of the screen film 10 to the rear surface 12 of the screen film 10 is larger than that of the first surface 21, so that the adhesive sheet 20 is not left on the vertical surface 50.

[0007]

As described above, according to the present invention, the screen film can be adhered to a vertical surface such as a wall or a partition plate many times. Was not left on the vertical surface, and there was no fear that the release sheet would be lost when the screen film was adhered to the vertical surface, and that the release sheet would not be easily peeled. Further, the present invention was able to be extremely inexpensive and light in weight as compared with the conventional portable screen.

[Brief description of the drawings]

FIG. 1 is a rear view of a screen film showing an embodiment of the present invention.

FIG. 2 is an explanatory side view of a partly cutaway view of FIG. 1 as viewed from the left side.

FIG. 3 is an explanatory view of a use state of FIG. 2;

FIG. 4 is an explanatory diagram of the thickness of an adhesive sheet and a release sheet.

FIG. 5 is another explanatory diagram of the thickness of the pressure-sensitive adhesive sheet and the release sheet.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 screen film 11 surface of screen film 12 back surface of screen film 20 adhesive sheet 21 one surface of adhesive sheet 22 other surface of adhesive sheet (adhesive surface) 30 release sheet 31 one surface of release sheet (release surface) 32 other surface of release sheet 40 Folded sheet 41 First half of folded sheet 42 Second half of folded sheet

Claims (4)

[Claims] 1. A portable screen having a pressure-sensitive adhesive sheet attached to a back surface of a screen film so as to be peelable on a vertical surface such as a wall or a partition plate, and fixed to the back surface of the screen film and peeled off from the vertical surface. When the pressure-sensitive adhesive sheet to be stuck and adhered is removed from the adhesion to the vertical surface, the pressure-sensitive adhesive sheet does not peel off from the back surface of the screen film and does not remain stuck to the vertical surface. As described above, a portable screen characterized in that the adhesive force for adhering to the screen film back surface of the adhesive sheet is larger than the adhesive force for adhering to the vertical surface. 2. A thick sheet for covering an adhesive surface to be adhered to the vertical surface of the adhesive sheet so that the release sheet can be easily peeled off from the adhesive surface with a fingertip. 2. The portable screen according to claim 1, wherein the portable screen is formed. 3. A folded sheet in which one end is attached to the release sheet and the other end is attached to the back surface of the screen film, so that the release sheet can be repeatedly coated and released on the adhesive surface. The portable screen according to claim 1, wherein the portable screen is provided. 4. The portable screen according to claim 1, wherein the pressure-sensitive adhesive sheet is formed thick so that the release sheet can be easily released from the pressure-sensitive adhesive surface with a fingertip.