Crime prevention and disaster prevention protective sheets for window glass, etc.

Abstract

To provide a crime prevention and disaster prevention protection sheet for window glass or the like, which can simultaneously satisfy the crime prevention and disaster prevention effects and can be installed at low cost. [Solution] The crime prevention and disaster prevention protective sheet, which is attached to the front of a glass surface such as a window glass, is composed of a base sheet portion made of synthetic resin and approximately 0.5 mm thick, an adhesive layer provided on one side of this base sheet portion, and a release film attached to this adhesive layer, and is made up of a middle sheet that is attached to the glass around the main lock in the center of the window glass, etc., and multiple corner sheets that are attached to the corners of the window glass, etc.

Description

[Technical Field]

[0001] This invention relates to a crime prevention and disaster prevention protective sheet that is attached to glass doors, windows, etc. [Background technology]

[0002] In the case of glass doors, window glass, etc. (hereinafter referred to simply as window glass in this specification), adhesive tape is applied from the outside to the glass surface around the lock of the glass door, window glass, etc., and by breaking the glass surface in the area of ​​the adhesive tape, a hole is made around the lock, through which a hand can be inserted to remove the lock, thereby preventing burglars and others from easily breaking in from outside.There is a well-known crime prevention and disaster prevention sheet made of synthetic resin that is applied around the lock of window glass, etc.

[0003] In addition, in order to prevent glass from breaking in the event of an earthquake, a disaster prevention sheet made of synthetic resin is attached to the entire surface of glass such as window glass to prevent breakage. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-20826 Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned conventional crime prevention sheets and disaster prevention sheets have the problem that they are thin and therefore difficult to remove when you have made a mistake in applying them or when you want to reapply them after they have become old.

[0006] Furthermore, crime prevention sheets and disaster prevention sheets that are attached to the entire surface of glass such as window glass are expensive and have the problem of being difficult to remove when they become old and need to be replaced.

[0007] To solve the above problems, the object of this invention is to provide a crime prevention and disaster prevention protective sheet for window glass etc., which can simultaneously satisfy the crime prevention and disaster prevention effects and can be installed at low cost. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the present invention provides a crime prevention and disaster prevention protective sheet that is attached to the front of a glass surface such as a window glass, and is characterized by comprising a base sheet portion made of synthetic resin and having a thickness of about 0.5 mm, an adhesive layer provided on one side of the base sheet portion, and a release film attached to the adhesive layer, the base sheet being attached to the glass surface around the main lock in the center of the window glass, etc., and a plurality of corner sheets being attached to the corners of the window glass, etc.

[0009] The present invention is also characterized in that the central sheet comprises a straight portion that follows the sash of the main lock portion in the center of the glass surface of the window glass, etc., and curved portions that curve from both ends of this straight portion.

[0010] This invention is characterized in that the corner sheet comprises a right-angle portion that fits along the corner of the sash of the glass surface of the window glass or the like, and a protrusion that connects the two ends of this right-angle portion. [Effects of the Invention]

[0011] This invention is configured as described above and can achieve the following effects:

[0012] When configured as in claim 1, the area where the main lock is attached and each corner of the glass surface of a glass door, window glass, etc. are protected by a security and disaster prevention protective sheet consisting of a center sheet and corner sheets, so that holes cannot be easily drilled.Since it takes more time to drill holes, it has the effect of improving security, and even if window glass, etc. is broken by earthquake shaking, it is possible to prevent glass from flying off of glass doors, window glass, etc. as much as possible, thereby increasing safety.

[0013] Furthermore, when configured as in claim 2, the release film can be peeled off from the area covering the main lock portion of the glass surface of a glass door, window glass, etc., and the straight portion can first be attached along the sash portion, and then the curved portion can be attached, thereby protecting the main lock portion with a simple attachment process.

[0014] When configured as in claim 3, the corners of glass doors, window panes, etc. can be protected with a simple application process by peeling off the release sheet, attaching the right-angled part, and then attaching the protruding part. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a front view of the central sheet in the crime prevention and disaster prevention protective sheet for window glass, etc., according to the present invention. [Figure 2] FIG. 2 is a perspective view of the central sheet shown in FIG. [Figure 3] FIG. 2 is a partially enlarged cross-sectional view of the central sheet shown in FIG. [Figure 4] FIG. 1 is a front view of a corner sheet in a crime prevention and disaster prevention protective sheet for window glass, etc., according to the present invention. [Figure 5] FIG. 5 is a perspective view of the corner sheet shown in FIG. [Figure 6] FIG. 5 is a partially enlarged cross-sectional view of the corner sheet shown in FIG. [Figure 7] FIG. 10 is an explanatory diagram showing how to attach the central sheet to the crescent lock part of the window glass. [Figure 8] 10 is an explanatory diagram showing how to attach the corner sheet to the corner of a window glass. FIG. [Figure 9] 1 is a front view of a window glass to which a crime prevention and disaster prevention protective sheet according to the present invention is attached. DETAILED DESCRIPTION OF THE INVENTION

[0016] The drawings show one embodiment of this invention, and in Figures 1 to 3, reference symbol 1 denotes a central sheet that constitutes one part of the crime prevention and disaster prevention protective sheet for window glass, etc., according to this invention, which is attached around the crescent lock of window glass, etc., as described below. This central sheet 1 is a flat, approximately semicircular sheet made of, for example, polypropylene, and in the example embodiment, it is 0.5 mm thick, and is composed of a base sheet portion 2, an adhesive layer 3 provided on one side of this base sheet portion 2, and a release film 4 made of, for example, synthetic resin, attached to this adhesive layer 3.

[0017] Although the base sheet portion 2 in the embodiment has no pattern, it may be provided with one or more of various pictures, figures, symbols, letters, etc. There is no limitation on the material of the base sheet portion 2, but a plastic sheet that is bendable and has tensile strength is preferable, and it may be transparent, opaque, colored or uncolored.

[0018] 4 to 6, reference symbol 6 indicates a corner sheet, also 0.5 mm thick, which constitutes the other part of the crime prevention and disaster prevention protective sheet for window glass, etc., according to this invention, and is attached to the corner of the glass surface of window glass, etc., as described below. This corner sheet 6 is composed of a quarter-circular base sheet portion 7 made of a plastic sheet, for example, made of polypropylene, an adhesive layer 8 provided on one side of this base sheet portion 7, and a release film 9 made of, for example, synthetic resin, attached to the upper surface of this adhesive layer 8. Note that the thickness of the corner sheet 6 according to this embodiment is 0.5 mm, but is not limited to this thickness.

[0019] There is no limitation on the material of the base sheet portion 7, but a foldable plastic sheet with sufficient tensile strength is preferable, and it may be transparent, opaque, colored or uncolored. Furthermore, the shapes of the center sheet 1 and corner sheets 6 are not limited to those described in the embodiment, and various shapes are possible.

[0020] Figure 7 shows the case where the above-mentioned middle sheet 1 is attached to the glass surfaces 12, 13 of a window glass 11. The middle sheet 1 is first peeled off the release film 4 to expose the adhesive layer 3, and then inserted between the crescent lock 14 and the glass surface 12, with its edge attached to the glass surface 12 of the frame member 12a, and then the remaining portion is attached to the glass surface 12.

[0021] Similarly, if the base sheet portion 2 of the central sheet 1 is attached around the crescent lock 14 on the other glass surface 13, a better crime prevention effect can be expected.

[0022] 8, the corner sheet 6 is formed by first peeling off the release film 9 and attaching a part of the base sheet portion 7 to the glass surface 12 of one window glass 11 in contact with the frame member 12a in the same manner as in the case of the middle sheet 1, and then attaching the remaining base sheet portion 7 to the corners of the glass surface 12 of the window glass. In this way, the corner sheet 6 is attached to each remaining corner of the glass surface 12, and in the same way, the corner sheet 6 is attached to each corner of the other glass surface 13.

[0023] In this way, the attachment of the crime prevention and disaster prevention protective sheet for window glass, etc. to the glass surfaces 12, 13 of the window glass 11 is completed, as shown in Figure 9. Note that the crime prevention and disaster prevention protective sheet for window glass, etc. is still effective even if it is attached to only one of the glass surfaces 12, 13 of the window glass (particularly the glass surface 12 of the window glass).

[0024] The above has been explained regarding the application of crime prevention and disaster prevention protective sheets to glass surfaces such as window glass, but crime prevention and disaster prevention protective sheets can also be applied to glass doors in the same way. Furthermore, crescent locks are one example of various locks.

[0025] In order to determine the crime prevention and disaster prevention effects of the crime prevention and disaster prevention protective sheet for window glass, etc., according to the present invention, tests were conducted under the following conditions, and the following results were obtained. Test Example 1

[0026] The test materials used were a semicircular central sheet with a diameter of 440 mm, made of a 0.4 mm thick polypropylene sheet with an adhesive layer, and quarter-circular corner sheets with a radius of 220 mm, made of the same material and thickness as the central sheet.These were attached to the inside of the glass surface of an actual aluminum sash window in the manner described above, and when commercially available adhesive tape was applied to the outside and the sheet was struck with a hammer, the glass broke, but the fragments stuck to the central and corner sheets and did not fall, and it took three minutes of noisy work to enlarge the hole enough to operate the lever of the crescent lock.

[0027] It has been confirmed through experience that if sound continues for more than one minute, there is a high risk of being noticed by residents and people in the vicinity, and it has been found that this is a sufficient crime deterrent. Also, even if someone actually tries to break the glass surface, it is obvious from the outside that a crime prevention and disaster prevention protective sheet is attached to the window glass, so it can be expected to have a sufficient psychological deterrent effect. Test Example 2

[0028] Glass plates measuring 3 mm thick, 420 mm long, and 290 mm wide were attached to an aluminum frame, and one was prepared without a security and disaster prevention sheet for window glass, etc., and one with a security and disaster prevention sheet for window glass, etc., attached. The glass plate without the security and disaster prevention sheet for window glass, etc., attached was designated Test Material 1, the glass plate with a 100 mm diameter center sheet and a 75 mm radius corner sheet attached to it was designated Test Material 2, and the glass plate with a 100 mm diameter center sheet and a 50 mm radius corner sheet attached to it was designated Test Material 3 (all attached to one side of the glass plate). The glass surface of each of Test Materials 1 to 3 was placed on a wooden frame, and the center of the glass plate was compressed from above using a 100 mm diameter spherical seat pressure plate to perform a static strength test.

[0029] The ambient temperature at that time was 23±2°C, 50±5% RH, the load cell was 5KN, and the test speed was 0.5mm / min.

[0030] As a result, when a breaking load of 1.08 KNT (108 kg) was applied to test material 1, it exploded with a loud noise, the glass panel broke, the frame material in front of it was blown away, and the glass panel itself was scattered far outside the wooden frame.

[0031] Test material 2 broke when a breaking load of 1.43 KNT (143 kg) was applied, and the glass panes broke, but the sound of the break was small and the frame was not blown away, remaining almost intact. The broken glass panes did not scatter into the surrounding area, and although some fell into the wooden frame, the majority remained in the frame, protected from scattering by the security and disaster prevention sheeting used on window glass, etc.

[0032] Similarly, test material 3 was tested under the same conditions as above, but broke when a breaking load of 3KNT (300 kg on the glass surface) was applied to the glass surface.

[0033] From the above test results, it was found that when a security and disaster prevention protective sheet is applied to window glass, etc., the strength against breaking pressure is increased, and even if the glass is broken, this security and disaster prevention protective sheet can effectively prevent the glass from shattering. [Industrial Applicability]

[0034] As the present invention is configured as described above, it is possible to provide a protective sheet for crime prevention and disaster prevention of window glass, etc., which can simultaneously provide crime prevention and disaster prevention effects for window glass, etc., and which is inexpensive to install. [Explanation of symbols]

[0035] 1 Central Seat 2,7 Base sheet part 3,8 Adhesive layer 4,9 Release film 6 Corner sheet 11 Window Glass 12,13 Glass surface 14 Crescent Tablets

Claims

1. This is a crime prevention and disaster prevention protective sheet for use on the front of a glass surface such as a window glass, characterized in that it comprises a base sheet made of synthetic resin and having a thickness of about 0.5 mm, an adhesive layer provided on one side of the base sheet, and a release film attached to the adhesive layer, and the crime prevention and disaster prevention protective sheet for window glass, etc. is characterized in that it comprises a middle sheet to be attached to the glass surface around the main lock in the center of the window glass, etc., and a plurality of corner sheets to be attached to the corners of the window glass, etc.

2. A crime prevention and disaster prevention protective sheet for window glass, etc., as described in claim 1, characterized in that the central sheet consists of a straight portion that follows the sash of the main lock part in the center of the glass surface of the window glass, etc., and curved portions that curve from both ends of this straight portion.

3. A crime prevention and disaster prevention protective sheet for window glass, etc. as described in claim 1, characterized in that the corner sheet consists of a right angle portion that follows the corner of the sash of the glass surface of the window glass, etc., and a protrusion that connects each end of this right angle portion.

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