Antifouling sheet

Abstract

The present invention addresses the problem of easily and reliably performing an operation of peeling off a sheet body by pinching a pinching part on an antifouling sheet. A first sheet body (11) and a second sheet body (12) of the antifouling sheet (10), which are peelably bonded, have first non-bonded portions along the left and right side edges, so that a first holding portion (11a) that can be raised from the second sheet body (12) is formed on the first sheet body (11). The second sheet body (12) and the third sheet body (13) have a second unbonded portion along the side edge on the same side as the first unbonded portion, so that a second holding portion (12a) that can be raised from the third sheet body (13) is formed on the side edge of the second sheet body (12). The width of the first unbonded portion is wider than the width of the second unbonded portion. The first pinching part (11a) is wider than the second pinching part (12a) and can be easily pinched, and the first sheet body (11) and the second sheet body (12) can be easily and reliably torn off in the order of the first sheet body (11) and the second sheet body (12).

Description

Technical Field

[0001] The present invention relates to an antifouling sheet, and in particular to an antifouling sheet capable of preventing dirt from easily forming on surfaces such as kitchen walls, bathroom walls, sinks or wash basins where dirt is easily formed. Background Art

[0002] It is known that when cooking in a kitchen, oily dirt such as oil smoke and oil splashes generated from a stove adheres to the wall surface of the kitchen.

[0003] In this case, the wall surface is wiped off with a wet rag or the like each time to remove the dirt, but this is very troublesome and cannot be easily removed when stubborn dirt is attached.

[0004] In order to save such trouble and improve the dirt removal performance, attempts have been made to stick anti-fouling sheets made of transparent plastic sheets or the like on the kitchen wall.

[0005] The greasy dirt adheres to the antifouling sheet pasted on the wall surface, so the wall surface itself can be prevented from being stained with dirt. In addition, if more than a certain amount of dirt accumulates on the surface of the sheet, the sheet itself can be peeled off and discarded, so the trouble of wiping it clean can be saved.

[0006] However, when the antifouling sheet is composed of a single sheet, if the sheet is stained with dirt, it is necessary to re-paste the sheet each time, that is, to peel off the old sheet and paste a new sheet, so it still takes corresponding time.

[0007] Therefore, as in Patent Document 1, an antifouling sheet is also designed as a laminated body in which a plurality of sheets, for example, a first sheet body, a second sheet body, and a third sheet body are laminated.

[0008] The sheets are bonded to each other in a releasable manner, and a gripping portion which is not bonded is formed on each sheet.

[0009] When using such an antifouling sheet, when the entire laminate is affixed to a kitchen wall, if dirt accumulates on the outermost first sheet, the grip portion is pulled to remove it, exposing the second sheet to the outermost layer.

[0010] Furthermore, if dirt accumulates on the second sheet, the gripping portion can be pulled and peeled off in the same manner to expose the third sheet as the outermost layer.

[0011] In this way, by configuring the antifouling sheet as a laminate of sheet bodies and peeling off the sheet bodies in order from the outermost layer, the trouble of re-attaching can be reduced.

[0012] Patent Document 1: Japanese Utility Model Application Laid-Open No. 3-99548

[0013] However, in the antifouling sheet of Patent Document 1, the gripping parts are provided only at the corners of the rectangular sheet body, and no particular study has been made on the positional relationship, relative sizes, etc. of the gripping parts.

[0014] Therefore, when the antifouling sheet is pasted to the wall, if the gripping portion is located at a high place and difficult to reach with fingers, or the gripping portion is located at a place close to the ground and needs to bend over to hold it, it is sometimes not easy to peel off the sheet.

[0015] In addition, when the first sheet is to be peeled off, the gripping portion of the second sheet may be grasped by mistake, and the second sheet, which is clean and free of dirt, may be peeled off together with the first sheet.

[0016] In this case, the second sheet is completely wasted.

[0017] Furthermore, in the antifouling sheet of patent document 1, a peeling ink layer or a printing ink layer is formed on the portion corresponding to the holding portion, or a release coating is formed on both sides of the second sheet, and then a first sheet and a third sheet are bonded to each other on both sides by adhesive layers, which is a complex structure, so the manufacturing process is labor-intensive and costly.

[0018] In addition, in the antifouling sheet of Patent Document 1, when the second sheet body is peeled off, the adhesive layer that becomes the outermost surface remains on the third sheet body, so that dirt easily adheres thereto.

[0019] Depending on the user, in order to ensure that the anti-fouling sheet can be used for a long time, if the outermost surface is stained with dirt, it is wiped with a rag to keep it clean. However, if the adhesive layer is exposed on the outermost surface, it may not be able to fully remove the attached dirt even if it is wiped due to its stickiness. Summary of the invention

[0020] Therefore, the problems to be solved by the present invention are: for an anti-fouling sheet which is composed of multiple sheets stacked in a releasable manner and can be peeled off one by one if the outermost sheet is stained with dirt, the operation of pinching the sheet to peel off the sheet can be easily and reliably performed without adopting a complicated structure; and no adhesive layer appears on the surface of each sheet, so even if dirt adheres, the dirt can be easily removed with a rag or the like.

[0021] In order to solve the above-mentioned problems, in the anti-fouling sheet involved in the invention, for the first sheet and the second sheet, there is a first non-bonded portion along at least one of the four sides, thereby forming a first pinching portion that can be lifted up from the second sheet on the above-mentioned side edge of the first sheet, and for the second sheet and the third sheet, there is a second non-bonded portion along the side on the same side as the first non-bonded portion, thereby forming a second pinching portion that can be lifted up from the third sheet on the side edge of the second sheet, and the width of the first non-bonded portion is formed to be wider than the width of the second non-bonded portion.

[0022] If so constructed, the gripping portion is arranged in a wide area along the side rather than being arranged only at the corner of the sheet, so that the hand cannot reach it or cannot grip it without taking a reluctant posture, and the sheet can be easily peeled off by gripping the gripping portion.

[0023] Furthermore, since the width of the first unbonded portion is set wider than that of the second unbonded portion, the first gripping portion is wider than the second gripping portion and is easier to grip, and the first sheet and the second sheet can be reliably peeled off in this order.

[0024] Therefore, it is possible to prevent the second sheet from being peeled off before the first sheet by mistake while the first gripping portion is being gripped.

[0025] In addition, here, the width of the grip portion refers to the length in a direction substantially perpendicular to the side of the sheet body.

[0026] For the anti-fouling sheet involved in the invention, it is preferred to adopt the following structure: the peeling strength of the first sheet relative to the second sheet is greater than 0.15N / 15mm and less than 0.25N / 15mm, the peeling strength of the second sheet relative to the third sheet is greater than 0.25N / 15mm and less than 0.5N / 15mm, and the peeling strength of the third sheet relative to the above-mentioned wall surface is greater than 4.3N / 25mm and less than 15N / 25mm.

[0027] According to this structure, the peeling strength of the second sheet body is greater than that of the first sheet body, so when the first sheet body is to be peeled off, it is possible to further prevent the second sheet body from being peeled off by mistake.

[0028] In addition, the peeling strength of the third sheet is greater than that of the first sheet and the second sheet, so when the first sheet or the second sheet is to be peeled off, the third sheet can be prevented from being peeled off by mistake.

[0029] By setting the peel strengths within the above ranges, it is possible to achieve good peelability without requiring excessive force when peeling off the sheets, and to prevent the sheets from being accidentally peeled off.

[0030] The antifouling sheet of the present invention preferably has a structure in which the width of the first unbonded portion is 5 mm to 15 mm, and the width of the second unbonded portion is 3 mm to 8 mm, provided that the first unbonded portion is wider than the second unbonded portion.

[0031] If so constituted, the width of the first and second gripping parts will not be too large or too small, and can be a width that is easy to grip. In addition, by setting the width of the first non-bonded part and the width of the second non-bonded part in such a range, the second gripping part is relatively difficult to grip than the first gripping part, so when peeling off each sheet, the first sheet and the second sheet can be peeled off reliably in the order of peeling off.

[0032] If the width of the first unbonded portion is less than 5 mm and the width of the second unbonded portion is less than 3 mm, the widths of the first and second gripping portions are too narrow, and gripping may become difficult.

[0033] In addition, if the width of the first unbonded portion is greater than 15 mm and the width of the second unbonded portion is greater than 8 mm, the widths of the first and second gripping portions are too wide, which may cause the first and second sheets to roll up and be accidentally removed.

[0034] The antifouling sheet according to the present invention preferably has a structure in which the first and second sheet bodies are thinner than the third sheet body.

[0035] With this structure, when the sheet materials are the same, the first and second sheets are less rigid than the third sheet and are more easily bent, so that it is easier to peel off the first and second sheets.

[0036] Furthermore, the third sheet body is relatively rigid and difficult to bend compared to the first and second sheets, so that the third sheet body can be prevented from following the first and second sheets and being peeled off.

[0037] Here, it is more preferable to adopt a structure in which the thickness of the first and second sheets is not less than 12 μm and not more than 25 μm, and the thickness of the third sheet is not less than 25 μm and not more than 75 μm.

[0038] With this structure, it is easier to peel off the first sheet and the second sheet, and the sheet can have sufficient strength.

[0039] In addition, the third sheet body will not be peeled off following the first and second sheet bodies, but can be easily peeled off from the wall surface alone, and can be a sheet body with sufficient strength.

[0040] If the thickness of the first and second sheets is less than 12 μm, they are too thin and insufficient in strength, which may cause holes and cracks, and the rigidity is too low, which may cause unexpected curling.

[0041] In addition, if the thickness of the first and second sheets exceeds 25 μm, they are too thick and rigid, making it difficult to form a rigidity difference with the third sheet. Therefore, the third sheet may follow the first and second sheets and be peeled off, which may hinder the operation of peeling off the first and second sheets.

[0042] If the thickness of the third sheet is less than 25 μm, it is too thin to form a rigidity difference with the first and second sheets, thereby hindering the operation of peeling off the first and second sheets, such as being able to peel off the third sheet along with the first and second sheets.

[0043] In addition, if the thickness of the third sheet is higher than 75 μm, the thickness is too large and the material cost is high. In addition, since the rigidity of the third sheet is too high, the followability to the wall is poor. Or, when the anti-fouling sheet is pasted to the wall with an adhesive layer formed on one side of the third sheet, the bubbles remaining in the adhesive layer cannot be smoothly removed to the outside using a scraper, or the fingers may be easily injured when the anti-fouling sheet is peeled off. This may hinder the operation of pasting the third sheet itself to the wall or peeling it off from the wall.

[0044] For the anti-fouling sheet involved in the invention, it is preferred to adopt the following structure: the first sheet body and the second sheet body are releasably bonded via a first adhesive layer, the missing portion of the first adhesive layer is a first non-bonded portion, the second sheet body and the third sheet body are releasably bonded via a second adhesive layer, and the missing portion of the second adhesive layer is a second non-bonded portion.

[0045] The sheets can be directly bonded to each other in a peelable state without an adhesive layer due to their own material, but by setting a structure with an adhesive layer sandwiched therebetween, it is easy to control the peel strength, so it is easy to adjust the ease of peeling off the sheet.

[0046] In addition, since the missing portion of the adhesive layer becomes a non-adhered portion, the formation of the non-adhered portion and the formation of the pinched portion accompanying the non-adhered portion are also facilitated.

[0047] Here, it is more preferable to adopt a structure in which the surface of the first sheet body facing the first adhesive layer and the surface of the second sheet body facing the second adhesive layer are respectively subjected to corona treatment.

[0048] If constructed in this way, the adhesion between the corona-treated surface of the sheet and the adhesive layer is improved, so no adhesive layer will remain on the outermost surface of the anti-fouling sheet, that is, the surface of the second sheet when the first sheet is peeled off, and the surface of the third sheet when the second sheet is peeled off.

[0049] That is, when the first sheet is peeled off, the first adhesive layer is peeled off together, and when the second sheet is peeled off, the second adhesive layer is peeled off together.

[0050] Therefore, it is possible to prevent the adhesive layer, to which dirt is easily attached, from remaining on the outermost surface and oil dirt and the like from easily attaching to the surface of the antifouling sheet, thereby preventing adverse effects on hygiene and the like.

[0051] The antifouling sheet according to the present invention preferably has a structure in which a first indication showing the position of the first grip is marked on the first sheet body, and a second indication showing the position of the second grip is marked on the second sheet body.

[0052] The positions of the first and second grips are not necessarily easy to confirm visually, so with this configuration, the positions can be confirmed using the first and second displays as markers, so that the grips are easy to pinch, improving convenience.

[0053] Here, it is more preferable to adopt a structure in which, when the first sheet is transparent and the second sheet can be seen from above, the second display is hidden in the first display and cannot be seen when the first sheet and the second sheet are overlapped.

[0054] This configuration can prevent the first display and the second display from being recognized simultaneously and being difficult to distinguish, thereby confusing the positions of the first grip and the second grip, or mistakenly peeling off the first sheet and the second sheet together.

[0055] Since the antifouling sheet according to the present invention is configured as described above, it is possible to easily and reliably perform the operation of peeling off the sheet by pinching the pinching portion without adopting a complicated structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a perspective view showing the antifouling sheet in use, viewed from the front.

[0057] Figure 2 It is an enlarged top view of the main parts of the anti-fouling sheet.

[0058] Figure 3 It is a cross-sectional view of the antifouling sheet.

[0059] Figure 4 It is a figure which shows the positional relationship between the top view and the cross-sectional view of the antifouling sheet.

[0060] Figure 5 is a top view of the first sheet.

[0061] Figure 6 is a top view of the second sheet.

[0062] Figure 7 This is an enlarged perspective view of the main parts viewed from the back of the antifouling sheet.

[0063] Description of Reference Numerals

[0064] 10…antifouling sheet; 11…first sheet body; 11a…first gripping portion; 11b…first display portion; 12…second sheet body; 12a…second gripping portion; 12b…second display portion; 13…third sheet body; 14…first adhesive layer; 14a…first non-adhesive portion; 15…second adhesive layer; 15a…second non-adhesive portion; 16…adhesive layer; 16a…convex portion; 16b…peeling sheet; K…kitchen; S…stove; W…wall. DETAILED DESCRIPTION

[0065] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0066] like Figure 1Thus, the antifouling sheet 10 according to the present invention is used by being attached to the wall surface W around the stove S in the kitchen K, and prevents dirt such as soup scattered from the stove S from directly adhering to the wall surface W.

[0067] The size of the antifouling sheet 10 is not particularly limited, and the vertical dimension can be 40 cm to 50 cm, and the horizontal dimension can be 80 cm to 100 cm. In addition, the vertical dimension and the horizontal dimension are for convenience, and of course the vertical and horizontal dimensions can be interchanged.

[0068] If the vertical dimension is less than 40 cm and the horizontal dimension is less than 80 cm, the wall surface W around the stove S in a kitchen K of a general size may not be sufficiently covered with the antifouling sheet 10 .

[0069] On the other hand, if the vertical dimension exceeds 50 cm and the horizontal dimension exceeds 100 cm, it may be too large and difficult to handle during pasting.

[0070] Even when the antifouling sheet 10 is too large for the size of the kitchen K, the size can be adjusted by appropriately cutting it.

[0071] like Figures 2 to 6 Thus, the antifouling sheet 10 is constituted by a laminate of the first sheet body 11, the second sheet body 12, and the third sheet body 13, each of which is rectangular, and the first sheet body 11 is the outermost surface.

[0072] If dirt is attached to the first sheet 11 , the first sheet 11 is peeled off to expose the second sheet 12 on the outermost surface. If dirt is attached to the second sheet 12 , the second sheet 12 is peeled off to expose the third sheet 13 on the outermost surface.

[0073] In this way, there is no need to re-stick the sheet, and the wall surface W can be prevented from being stained with dirt for a long time.

[0074] The material of the first sheet body 11 , the second sheet body 12 , and the third sheet body 13 is not particularly limited, and examples thereof include synthetic resins such as PET resin and polypropylene resin, and metal foils such as aluminum foil.

[0075] In addition, their color tone, transparency, etc. are not particularly limited, and for example, they may be colorless or colored, and may be transparent or opaque.

[0076] In this embodiment, a transparent synthetic resin (PET film) is used as a material that does not impair the appearance of the kitchen K. In addition, a marble pattern, a wood grain pattern, etc. can also be printed to form an anti-fouling sheet that has both opaque and patterned wall decoration.

[0077] The thickness of the sheets is not particularly limited. For example, the thickness of the first sheet 11 and the second sheet 12 is smaller than that of the third sheet 13 , and the thickness of the first sheet 11 and the second sheet 12 is 12 μm to 25 μm, and the thickness of the third sheet is 25 μm to 75 μm.

[0078] like Figures 2 to 6 In this way, the first sheet body 11 and the second sheet body 12 are releasably bonded via the first adhesive layer 14 , and the second sheet body 12 and the third sheet body 13 are releasably bonded via the second adhesive layer 15 .

[0079] Thus, the first sheet body 11 has a predetermined peeling strength with respect to the second sheet body 12 , and the second sheet body 12 has a predetermined peeling strength with respect to the third sheet body 13 .

[0080] Such peel strength is not particularly limited, and examples thereof include: the peel strength of the first sheet 11 with respect to the second sheet 12 is 0.15 N / 15 mm to 0.25 N / 15 mm, and the peel strength of the second sheet 12 with respect to the third sheet 13 is 0.25 N / 15 mm to 0.5 N / 15 mm.

[0081] In the present embodiment, the surface of the first sheet body 11 facing the first adhesive layer 14 and the surface of the second sheet body 12 facing the second adhesive layer 15 are subjected to corona treatment.

[0082] This improves the adhesion between the first sheet body 11 and the first adhesive layer 14 , and between the second sheet body 12 and the second adhesive layer 15 .

[0083] Therefore, when the first sheet 11 is peeled off, the first adhesive layer 14 is also peeled off together, and when the second sheet 12 is peeled off, the second adhesive layer 15 is also peeled off together, and no adhesive layer appears on the outermost layer.

[0084] Therefore, unlike the case in Patent Document 1 where a pressure-sensitive adhesive layer to which dust or the like is easily attached appears on the outermost surface when the first sheet or the second sheet is peeled off, dirt is less likely to adhere to the outermost surface and is less noticeable.

[0085] The lamination method of the adhesive layer is not particularly limited, and examples thereof include wet lamination and dry lamination.

[0086] The type of resin of the adhesive layer is not particularly limited, and examples thereof include esters, polyurethanes, and ethers. However, esters are preferred as they are resins that can easily adjust the peel strength.

[0087] The thickness of the adhesive layer is not particularly limited, but is preferably 0.5 to 5 μm, more preferably 0.5 to 1 μm. In addition, the first adhesive layer 14 and the second adhesive layer 15 may have different thicknesses.

[0088] Generally, if the adhesives are of the same type, the greater the thickness, the greater the peel strength. Therefore, if the peel strength of the second sheet 12 is desired to be greater than the peel strength of the first sheet 11 , this can be achieved by making the thickness of the second adhesive layer 15 greater than the thickness of the first adhesive layer 14 .

[0089] As shown in the figure, the first adhesive layer 14 has strip-shaped adhesive missing portions along the left and right sides of the four sides of the first sheet body 11 , which serve as first non-adhesive portions 14 a .

[0090] Similarly, the second adhesive layer 15 is provided with strip-shaped adhesive missing portions along the left and right sides of the four sides of the second sheet body 12 , which serve as second non-adhesive portions 15 a .

[0091] like Figure 4 In this way, the width of the first unbonded portion 14a is larger than the width of the second unbonded portion 15a.

[0092] The size of the width of the non-bonded portion is not particularly limited, and the width of the first non-bonded portion 14a can be exemplified as 5 mm or more and 15 mm or less, and the width of the second non-bonded portion 15a can be 3 mm or more and 8 mm or less. In addition, the difference between the width of the first non-bonded portion 14a and the width of the second non-bonded portion 15a can be exemplified as 2 mm or more and 10 mm or less. By setting the difference to this range, it is possible to prevent the holding portion of the second sheet from being held by mistake, and even the second sheet that is kept clean without dirt being attached is also peeled off together with the first sheet.

[0093] The first band-shaped gripping portions 11a are formed near the left and right sides of the first sheet 11 rather than the first unbonded portions 14a, and the second band-shaped gripping portions 12a are formed near the left and right sides of the second sheet 12 rather than the second unbonded portions 15a.

[0094] The first gripping portion 11 a is not bonded to the second sheet body 12 , and the second gripping portion 12 a is not bonded to the third sheet body 13 . Both are in a lifted state, and can be easily gripped with fingers.

[0095] The first gripping portion 11 a and the second gripping portion 12 a are in an overlapping state.

[0096] The first sheet body 11 can be peeled off by pinching the first pinching portion 11 a and pulling it, and the second sheet body 12 can be peeled off by pinching the second pinching portion 12 a and pulling it.

[0097] The width of the first pinched portion 11a is equal to the width of the first unbonded portion 14a, and the width of the second pinched portion 12a is equal to the width of the second unbonded portion 15a.

[0098] Thus, since the width of the first grip 11a is wider than the width of the second grip 12a, when the first grip 11a and the second grip 12a overlap, the second grip 12a is hidden in the first grip 11a.

[0099] Therefore, there will be no situation where the second gripping portion 12a is accidentally gripped while intending to grip the first gripping portion 11a.

[0100] As shown in the figure, the first sheet body 11 is provided with a first indicator portion 11 b as a mark indicating the position of the first grip portion 11 a , and the second sheet body 12 is provided with a second indicator portion 12 b as a mark indicating the position of the second grip portion 12 a .

[0101] The first display portion 11 b is a wide band-shaped solid line extending vertically along the left and right sides of the first sheet body 11 , and the second display portion 12 b is a thin dotted line extending vertically along the left and right sides of the second sheet body 12 .

[0102] In addition, in a state where the first sheet body 11 and the second sheet body 12 are overlapped, the second display portion 12 b is hidden in the first display portion 11 b and cannot be recognized.

[0103] The first gripping portion 11a and the second gripping portion 12a exist near the overlapping position, and when the first sheet 11 is present, only the first display portion 11b is recognized. In addition, the first display portion 11b and the second display portion 12b are clearly distinguishable at a glance through wide solid lines and thin dotted lines, so the objects they indicate can be prevented from being confused.

[0104] The formation form of the first display portion 11 b and the second display portion 12 b is not particularly limited, and they may be formed by attaching a sticker or the like to the sheets 11 and 12 , but formation by printing is relatively simple and therefore preferred.

[0105] The shapes of the first display portion 11b and the second display portion 12b are not limited to lines, and any desired symbols or patterns may be printed as long as they function as marks. In this case, it is preferred to change the printed color, symbols, patterns, etc. to create different marks.

[0106] The formation positions of the first display portion 11 b and the second display portion 12 b are also not limited, and when the first sheet body 11 and the second sheet body 12 are transparent, they can also be provided on the back surface.

[0107] The third sheet body 13 has an adhesive layer 16 laminated on the back surface thereof, that is, on the surface opposite to the surface on which the second sheet body 12 is laminated, so that the third sheet body 13 can be attached to the wall surface W around the stove S in the kitchen K.

[0108] The third sheet body 13 has a predetermined peeling strength with respect to the wall surface W due to the adhesive layer 16 .

[0109] Such peel strength is not particularly limited, and can be exemplified as 4.3N / 25mm or more and 15N / 25mm or less. More preferably, it is 6.0N / 25mm or more and 10N / 25mm or less. By setting it to such a range, when the first sheet or the second sheet is to be peeled off, it is possible to reliably prevent the third sheet from being peeled off by mistake, and it is possible to prevent the third sheet from being difficult to peel off when peeling off.

[0110] like Figure 7 Thus, the bonding surface of the adhesive layer 16 is not flat, but has many tiny flat cylindrical protrusions 16 a arranged in a grid pattern.

[0111] Thus, when the bonding surface of the adhesive layer 16 is brought into contact with the wall surface W of the kitchen K, mainly only the convex portions 16a adhere to the wall surface W, and gaps allowing air circulation are formed between adjacent convex portions 16a.

[0112] Since the slit communicates with the outer edge of the antifouling sheet 10 , the air entering between the bonding surface and the wall surface W can be naturally discharged to the outside through the slit or can be easily removed to the outside by using a scraper or the like.

[0113] This can prevent air bubbles from remaining between the antifouling sheet 10 and the wall surface W, which would be visible through the transparent antifouling sheet 10 and thus deteriorate the appearance of the kitchen K.

[0114] like Figure 7 In this way, the release sheet 16 b is laminated on the adhesive surface of the adhesive layer 16 .

[0115] Thus, during the period from when the antifouling sheet 10 is distributed as a product to when it is used, it is possible to prevent foreign matter such as garbage from adhering to the adhesive surface and thus preventing the adhesive force from decreasing.

[0116] The formation mode of the adhesive layer 16 is not particularly limited, and it can be formed by applying an adhesive to one surface of the third sheet body 13 and drying the adhesive.

[0117] The type of the adhesive is not particularly limited, and examples thereof include epoxy adhesives and acrylic adhesives. As an adhesive having excellent transparency, an acrylic adhesive is preferred.

[0118] The thickness of the adhesive layer 16 is not particularly limited, but is preferably 20 to 40 μm, more preferably 25 to 35 μm.

[0119] The color tone of the adhesive layer 16 is not particularly limited, but is preferably transparent so as not to impair the appearance of the kitchen wall surface.

[0120] When the first sheet body 11 , the second sheet body 12 , and the third sheet body 13 are printed or the like and are opaque, the adhesive layer 16 is not limited to be transparent.

[0121] The structure of the anti-fouling sheet 10 of the embodiment is as described above. It does not adopt a structure in which a peeling ink layer or a printing ink layer is formed on the portion corresponding to the holding portion, or a release coating is formed on both sides of the second sheet and then the first sheet and the third sheet are bonded to each other on both sides of the second sheet with an adhesive layer, as in the anti-fouling sheet of patent document 1. Therefore, the structure is simplified.

[0122] Therefore, the trouble and cost for manufacturing can be reduced.

[0123] Example

[0124] Hereinafter, embodiments of the present invention will be given to further clarify the contents of the present invention.

[0125] First, a transparent PET film having a thickness of 16 μm was prepared as a first sheet and a second sheet, and a transparent PET film having a thickness of 38 μm was prepared as a third sheet.

[0126] Next, linear lines are printed along the same side edges of the single surfaces of the first sheet and the second sheet.

[0127] In the case of the first sheet, pink lines are printed as the first display, and in the case of the second sheet, white lines are printed as the second display.

[0128] Here, the first display is spaced 8 mm from the side, and the second display is spaced 5 mm from the side.

[0129] The third sheet and the first sheet and the second sheet printed with the first and second displays are bonded together by dry lamination using an ester resin to obtain a composite sheet in which the sheets are releasably bonded together via the first adhesive layer and the second adhesive layer.

[0130] Furthermore, an adhesive layer was laminated on the back surface of the third sheet body of the composite sheet body via an acrylic adhesive, and a polyethylene release film was laminated on the adhesive layer.

[0131] As the formation form of the adhesive layer, Figure 7 Thus, many tiny and flat cylindrical protrusions are arranged in a grid pattern.

[0132] The composite sheet body prepared in this way was cut into a predetermined size (45 cm×90 cm) to obtain an antifouling sheet of an example.

[0133] In the anti-fouling sheet, the first and second unbonded portions as missing portions of the adhesive of a specified width (8 mm in the first sheet and 5 mm in the second sheet) are formed on the left and right sides of the first and second adhesive layers, and the first and second pinching portions are formed at the same positions of the first and second sheets.

[0134] Here, as Examples 1 to 3, the lamination peel strength and adhesive peel strength shown in Table 1 were adjusted.

[0135] In Table 1, lamination peel strength 1 (N / 15 mm) indicates the lamination peel strength of the first sheet relative to the second sheet, and lamination peel strength 2 (N / 15 mm) indicates the lamination peel strength of the second sheet relative to the third sheet.

[0136] In Table 1, the adhesive peel strength (N / 25 mm) indicates the adhesive peel strength of the third sheet body with respect to the adherend.

[0137] In addition, the lamination peel strength complies with JIS Z0237 "Test methods for adhesive tapes and adhesive sheets". The adhesive surface of the test sample cut to a width of 15 mm is peeled off, and the sample is pulled in a 180° direction at a speed of 300 mm / min using a tensile testing machine, and the average strength when peeled off a certain distance (about 30 mm) is measured.

[0138] In addition, the adhesive peel strength is based on JIS K7127 "Test conditions for films and sheets". A test sample cut to a width of 25 mm is prepared, and its adhesive surface is pasted to the adherend (SUS plate). After reciprocating pressure bonding with a 2.0 kg roller, it is pulled in a 180° direction at a speed of 300 mm / min using a tensile testing machine, and the maximum value at this time is measured.

[0139] [Table 1]

[0140]

[0141] Regarding the above-mentioned Examples 1 to 3, peeling tests were performed on the first sheet relative to the second sheet and on the second sheet relative to the third sheet, and the adhesion state of the third sheet relative to the adherend serving as a simulated wall surface after the peeling test was observed and evaluated.

[0142] As a result, first, regarding Example 1, the peeling feeling of the first sheet and the second sheet was good, but it was confirmed that the end of the third sheet was curled up.

[0143] In Example 2, the peeling feeling of the first sheet body and the second sheet body was good, and the third sheet body was not at all confirmed to be rolled up from the adherend.

[0144] Regarding Example 3, the peeling feeling of the first sheet and the second sheet was good, but it was confirmed that the end of the third sheet was about to be rolled up from the adherend.

[0145] The embodiments and examples disclosed this time are illustrative in all aspects and are not restrictive.

[0146] The scope of the present invention is indicated by the claims, and all modifications and changes within the scope and meanings equivalent thereto are intended to be included.

[0147] For example, in the embodiment, the purpose of the anti-fouling sheet 10 is mainly recorded as the anti-fouling of the wall W around the stove S in the kitchen K, but it is not limited to this. The anti-fouling sheet of the present invention can be fully applied to the anti-fouling of areas such as bathroom walls, sinks, and washbasins where scale, dust and other dirt are easily attached to the surface.

[0148] In the embodiment, the antifouling sheet 10 is a three-layer structure (excluding the adhesive layer and the sticky layer) composed of the first to third sheets 11, 12, 13, but it is not limited to this, and the number of sheets that receive dirt can be further increased to be a four-layer structure or more.

[0149] Furthermore, layers other than the sheet bodies 11 , 12 , 13 , the adhesive layers 14 , 15 , and the pressure-sensitive adhesive layer 16 may be added.

[0150] In the embodiment, the sheets 11, 12, 13 are releasably bonded via the adhesive layers 14, 15, but this is not limited to this. When the sheets 11, 12, 13 themselves have releasable adhesiveness, the adhesive layers 14, 15 can be omitted and the sheets 11, 12, 13 can be directly releasably bonded to each other.

[0151] In the embodiment, the first and second gripping parts 11a and 12a are formed along the left and right sides of the antifouling sheet, but the positions are not limited thereto, and they may be formed along any one of the four sides.

[0152] For example, the pinching parts may be formed on the upper side or the lower side of the antifouling sheet, may be formed only on the left side or only on the right side, or may be formed on all four sides.

[0153] In addition, the gripping portion only needs to be formed along the side of the antifouling sheet, and may not be provided in the entire area of ​​the side, and may be provided intermittently or only in a specified range. However, it is preferred that the antifouling sheet can be peeled off from any position of the side, so it is more preferred to form the gripping portion in substantially the entire area of ​​the side of the antifouling sheet.

[0154] In the embodiment, the first and second display portions 11 b and 12 b are provided as lines, but as described above, the shape of the display portion is not limited thereto, and the display portion may be omitted.

[0155] In the embodiment, the adhesive layer 16 has the protrusions 16a on the adhesive surface, but the present invention is not limited thereto, and the adhesive surface may be flat. The release sheet 16b may also be omitted.

Claims

1. An antifouling sheet, which is formed by laminating a first sheet, a second sheet and a third sheet in sequence in a releasable manner, and is composed of at least three layers of sheets, wherein the third sheet can be attached to a wall surface, characterized in that: The first sheet and the second sheet have a first non-bonded portion along at least one of the four sides, so that a first gripping portion that can be lifted from the second sheet is formed on the one side of the first sheet. The second sheet and the third sheet have a second non-bonded portion along one side on the same side as the first non-bonded portion, so that a second gripping portion that can be lifted from the third sheet is formed on the one side of the second sheet. The first unbonded portion is formed to have a width wider than that of the second unbonded portion.

2. The antifouling sheet according to claim 1, characterized in that: The peel strength of the first sheet relative to the second sheet is 0.15 N / 15 mm or more and 0.25 N / 15 mm or less, The peel strength of the second sheet relative to the third sheet is not less than 0.25 N / 15 mm and not more than 0.5 N / 15 mm, The peel strength of the third sheet body with respect to the wall surface is not less than 4.3 N / 25 mm and not more than 15 N / 25 mm.

3. The antifouling sheet according to claim 1 or 2, characterized in that: The width of the first unbonded portion is 5 mm to 15 mm. The width of the second unbonded portion is 3 mm to 8 mm.

4. The antifouling sheet according to any one of claims 1 to 3, characterized in that: The thickness of the first sheet body and the second sheet body are respectively thinner than the thickness of the third sheet body.

5. The antifouling sheet according to claim 4, characterized in that: The thickness of the first sheet and the second sheet is not less than 12 μm and not more than 25 μm. The thickness of the third sheet is greater than or equal to 25 μm and less than or equal to 75 μm.

6. The antifouling sheet according to any one of claims 1 to 5, characterized in that: The first sheet and the second sheet are releasably bonded via a first adhesive layer. The missing portion of the first adhesive layer is the first non-adhesive portion, The second sheet and the third sheet are releasably bonded via a second adhesive layer. The missing portion of the second adhesive layer is the second non-adhered portion.

7. The antifouling sheet according to claim 6, characterized in that: The surface of the first sheet body facing the first adhesive layer and the surface of the second sheet body facing the second adhesive layer are subjected to corona treatment.

8. The antifouling sheet according to any one of claims 1 to 7, characterized in that: A first indication showing the position of the first gripping portion is marked on the first sheet. The second sheet body is marked with a second indication showing the position of the second grip.

9. The antifouling sheet according to claim 8, characterized in that: The first sheet is transparent, and the second sheet can be identified from above. Furthermore, when the first sheet and the second sheet are overlapped, the second display is hidden in the first display and cannot be recognized.

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