Masking tape

Abstract

To provide a masking tape capable of efficiently and accurately conducting operation of adhering the tape at a prescribed adhesion position.SOLUTION: A masking tape includes a base material and an adhesive layer disposed at least on one side of the base material. In the base material, a plurality of perforations for partially cutting off the base material is formed in a longer direction of the base material. Regarding a center line of one long side of the base material and the other long side of the base material as references, the perforations are formed between the center line and the one long side, and between the center line and the other long side, respectively.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a masking tape. [Background technology]

[0002] Generally, line painting work indoors, such as in a gymnasium, requires the steps of attaching two strips of masking tape parallel to the floor or other surface with a gap the width of the line between them, applying paint between the two strips of masking tape, and peeling off the two strips of masking tape after painting.

[0003] In the process of attaching two pieces of masking tape, the distance between them is measured with a ruler to ensure that the tapes are parallel, and the position of the tape is checked each time it is attached. This work requires re-application in some cases, and is therefore time-consuming and cumbersome, so there is a demand for improvements in work efficiency.

[0004] For example, Patent Document 1 discloses a line masking tape in which two strips of masking tape are attached in the longitudinal direction to both ends of a tape material for the purpose of neatly drawing parallel lines of a constant width. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 5-54617 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the line masking tape disclosed in Patent Document 1 has two strips of masking tape spaced apart from each other at both ends of the tape material. Therefore, if this masking tape is applied to an object once, and then a portion of it is peeled off and reapplied, the intended position at which the tape was originally intended to be applied becomes unclear.

[0007] In the above-mentioned case, in the technology of Patent Document 1, in order to apply the tape in a specified and accurate position, it is necessary to measure the distance with a ruler and confirm the application position, as in the conventional method, which causes a problem of lack of work efficiency.

[0008] Therefore, an object of the present invention is to provide a masking tape that enables the task of applying the tape to a predetermined application position to be performed more efficiently and accurately. [Means for solving the problem]

[0009] The present inventors conducted extensive research and discovered that the above problems could be solved by using a masking tape having a specific structure, and thus completed the present invention.

[0010] One aspect of the present invention is a masking tape comprising a base material and an adhesive layer laminated on at least one surface of the base material, the base material having a plurality of cutouts formed along a longitudinal direction of the base material for cutting out a portion of the base material, the cutouts being formed between the center line between one long side of the base material and the other long side of the base material, and between the center line and the one long side, respectively.

[0011] The cutout is preferably a plurality of slits. The distance from the long side of the base material to the slits is preferably 5 mm or more. The length of the slits is preferably 10 mm or more, and the interval between the plurality of slits is preferably 0.2 mm or more.

[0012] The substrate is preferably made of paper. The adhesive layer preferably contains one or more adhesives selected from an acrylic adhesive or a rubber adhesive. The tape is preferably used to mark a dividing line indoors. Effect of the Invention

[0013] According to the masking tape of the present invention, it is possible to provide a masking tape that enables the task of applying the tape to a predetermined application position to be performed more efficiently and accurately. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a plan view of the masking tape according to the present embodiment as viewed from the substrate side. [Diagram 2] FIG. 2 is a cross-sectional view that typically shows the AA cross section of the masking tape according to the present embodiment in FIG. [Diagram 3] FIG. 3 is an enlarged view of the slits formed in the masking tape of the present embodiment shown in FIG. [Figure 4] FIG. 4 is a plan view showing the state after the base material of the masking tape according to this embodiment has been applied to a predetermined position and then the central portion of the base material has been peeled off along the longitudinal direction.

[0015] Hereinafter, embodiments of the present invention will be described in detail. In this specification, the expression "a to b" in the explanation of a numerical range means that the range is from a to b, unless otherwise specified.

[0016] For ease of explanation, in this specification, the object to which the masking tape according to the present embodiment is applied (for example, a floor, a wall, concrete, etc.) may be simply referred to as a "floor" or a "floor, etc." However, the object to which the masking tape according to the present invention is applied is not limited to a floor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] 1. Masking tape Fig. 1 is a plan view of the masking tape 100 of this embodiment when viewed from the substrate 10 side. Fig. 2 is a cross-sectional view showing a schematic cross section taken along line AA in Fig. 1. As shown in Figs. 1 and 2, the masking tape 100 of this embodiment includes a substrate 10, an adhesive layer 20, and a release paper 30.

[0018] 1-1. Base material 1, the substrate 10 has both end portions 11a, 11b (white portions) and a central portion 12 (gray portion). Both end portions 11a, 11b refer to the combined portion of one end portion 11a and the other end portion 11b of the substrate 10. The central portion 12 refers to the portion sandwiched between both end portions 11a, 11b.

[0019] A cutout 40 is formed along the longitudinal direction on the boundary line between the end portions 11a, 11b and the central portion 12 of the base material 10. The cutout 40 is a process for cutting out the central portion 12, which is a part of the base material 10, along the longitudinal direction.

[0020] 1-1-1.Cutting The cutout 40 may be formed in any manner as long as the central portion 12 of the base material 10 can be peeled off. For example, perforation, half-cutting, embossing, slitting, etc. are included. In this embodiment (FIG. 1), an example in which the cutout 40 is composed of a plurality of slits 41a, 41b is shown. The plurality of slits 41a, 41b will be described in detail below.

[0021] 1-1-1-1. Slit processing / position 1, a center line D between one long side B and the other long side C of the substrate 10 is used as a reference. A plurality of slits 41a are formed in a line along the longitudinal direction of the substrate 10 between the center line D and one long side B. That is, the slits 41a are formed on the boundary line between one end portion 11a of the substrate 10 and a central portion 12 of the substrate 10.

[0022] The multiple slits 41b are formed in a row along the longitudinal direction of the base material 10 between the center line D and the other long side C. That is, the slits 41b are formed on the boundary line between one end portion 11b of the base material 10 and the central portion 12 of the base material 10.

[0023] The length T of the short side of the substrate 10 is not particularly limited and can be appropriately adjusted according to the width of the line to be painted. For example, the length T of the short side of the substrate 10 is preferably 15 mm or more, 20 mm or more, 25 mm or more, and is preferably 150 mm or less, 130 mm or less, 100 mm or less, etc.

[0024] The distance from one long side B to the slit processing 41a, i.e., the length t1 of the short side of one end portion 11a of the substrate 10, is preferably 5 mm or more, 10 mm or more, 15 mm or more, etc., and is preferably 35 mm or less, 30 mm or less, 25 mm or less, etc.

[0025] The length t1 of the short side of the one end portion 11a is preferably 1 / 15 to 1 / 3, and more preferably 1 / 6 to 1 / 4, of the length T of the short side of the substrate .

[0026] The distance from one of the long sides C to the slit processing 41b, i.e., the length t2 of the short side of the other end portion 11b of the substrate 10, is preferably 5 mm or more, 10 mm or more, 15 mm or more, etc., and is preferably 35 mm or less, 30 mm or less, 25 mm or less, etc.

[0027] The length t2 of the short side of the other end portion 11b is preferably 1 / 15 to 1 / 3, and more preferably 1 / 6 to 1 / 4, of the length T of the short side of the substrate .

[0028] By setting the length t1 of the short side of one end portion 11a and the length t2 of the short side of the other end portion 11b within the above range, the central portion 12 of the substrate 10 can be peeled off more efficiently while leaving both end portions 11a and 11b of the substrate 10. t1 and t2 can be appropriately adjusted according to the width of the line to be painted. t1 and t2 may be the same value or different values.

[0029] The distance between the slits 41a and 41b, i.e., the length t3 of the short side of the central portion 12 of the substrate 10, is preferably 5 mm or more, 15 mm or more, 25 mm or more, and is preferably 100 mm or less, 90 mm or less, 75 mm or less.

[0030] By setting the length t3 of the short side of the central portion 12 of the substrate 10 within the above range, a line of an appropriate width can be painted. t3 is the same value as the width of the line to be painted, and can be appropriately adjusted according to the width of the line to be painted. The length T of the short side of the substrate 10 is the sum of t1, t2, and t3.

[0031] 1-1-1-2. Slit processing / length and interval Fig. 3 is an enlarged view of the slit processing 41a formed in the masking tape 100 of this embodiment. As shown in Fig. 3, the length L of the slit processing 41a is preferably 10 mm or more, 30 mm or more, 50 mm or more, etc., and is preferably 120 mm or less, 100 mm or less, 80 mm or less, etc.

[0032] The interval M between the multiple slit processing 41a formed in the same row is preferably 0.2 mm or more, 0.3 mm or more, 0.5 mm or more, etc., and is preferably 1.0 mm or less, 0.8 mm or less, 0.6 mm or less, etc. In this embodiment (FIG. 1), an example is shown in which the slit processing 41a is formed so that the length and interval are constant, but this is not limited to this, and the multiple slit processing 41a may each have a different length and interval.

[0033] The length and interval of the slits 41b are similar to those of the slits 41a described above, and therefore illustration and description thereof will be omitted.

[0034] By setting the length and interval of the slits 41a and 41b within the above range, when using the masking tape 100, even if the substrate 10 is peeled off from the release paper 30, the both end portions 11a and 11b and the central portion 12 of the substrate 10 are not completely separated, and the shape of a single tape is maintained. Therefore, the substrate 10 can be attached to a predetermined attachment position more efficiently and accurately. Furthermore, after the substrate 10 is attached to a predetermined attachment position, when the central portion 12 of the substrate 10 is peeled off, the substrate 10 does not tear along the slits 41, and the central portion 12 of the substrate 10 can be peeled off cleanly.

[0035] 1-1-2.Material / Thickness / Color The material of the substrate 10 can be appropriately selected within a range that does not impair the effects of the present invention. Examples include polyethylene terephthalate (PET), polypropylene (PP), cellophane, paper, and the like. Considering the ease of hand-cutting the substrate 1, the substrate 10 is preferably formed of a paper material such as Japanese paper. Since Japanese paper can be easily cut from any direction, the central portion 12 of the substrate 10 can be easily cut and peeled off without applying excessive force.

[0036] The surface of the substrate 10 may be subjected to an appropriate surface treatment. Examples of the surface treatment include a corona treatment for improving adhesion to the pressure-sensitive adhesive layer 20 described below, and a release treatment performed on the surface opposite the pressure-sensitive adhesive layer 20.

[0037] The thickness of the substrate 10 is not particularly limited, and is, for example, preferably from 5 to 100 μm, and more preferably from 10 to 50 μm.

[0038] The color of the base material 10 is not particularly limited and can be appropriately selected. It is preferable that the color be easily distinguished from the color of the floor or the like on which the line painting is to be performed.

[0039] 1-2. Adhesive layer The adhesive layer 20 is laminated on one of the main surfaces of the substrate 10. The material of the adhesive layer 30 is not particularly limited, and a known adhesive can be used. Examples include acrylic adhesives, rubber adhesives, silicone adhesives, and polyester adhesives. In this embodiment, it is preferable that the adhesive layer 20 is one or more types selected from acrylic adhesives and rubber adhesives, and an acrylic adhesive is more preferable.

[0040] The acrylic adhesive is a copolymer consisting of a main monomer that exhibits adhesiveness, a comonomer that acts as a cohesive strength component, and a functional group-containing monomer that improves adhesive strength and can react with a crosslinking agent, and can be crosslinked using a crosslinking agent, etc. Furthermore, tackifier resins, fillers, antioxidants, etc. can be added as necessary.

[0041] Examples of the main monomer include alkyl acrylates having an alkyl group of 2 to 14 carbon atoms, such as ethyl acrylate, n-butyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, isononyl acrylate, n-octyl acrylate, lauryl acrylate, and cyclohexyl acrylate, and alkyl methacrylates having an alkyl group of 4 to 14 carbon atoms, such as n-butyl methacrylate, isobutyl methacrylate, n-octyl methacrylate, lauryl methacrylate, and cyclohexyl methacrylate, and these can be used alone or in combination of two or more.

[0042] Examples of the comonomer include (meth)acrylic acid alkyl esters having an alkyl group of 1 to 8 carbon atoms, such as methyl acrylate, methyl methacrylate, ethyl methacrylate, and propyl methacrylate, vinyl acetate, acrylonitrile, methacrylonitrile, acrylamide, and styrene, and these can be used alone or in combination of two or more kinds, as necessary.

[0043] Examples of functional group-containing monomers include monocarboxylic acids such as acrylic acid, methacrylic acid, and crotonic acid; polycarboxylic acids such as maleic acid, fumaric acid, citraconic acid, glutamic acid, and itaconic acid, and their anhydrides; carboxylic acid derivatives having a hydroxyl group such as hydroxyethyl methacrylate and hydroxypropyl methacrylate; dimethylaminoethyl methacrylate, acrylamide, methylol acrylamide, and glycidyl methacrylate; and the like. If necessary, one or more of these can be used in combination.

[0044] As the crosslinking agent, generally used are epoxy resins, melamine resins, urea resins, polyisocyanates, acid anhydrides, amine compounds, phenol compounds, amino compounds, aziridine compounds, metal oxides (organic metal salts, metal alkoxides, organometallic oxides), etc., but can be appropriately selected so as to suit the type of functional group-containing monomer used.

[0045] Rubber-based adhesives consist of elastomers, tackifying resins, softeners, etc., and may contain fillers, antioxidants, etc. as needed. Elastomers include natural rubber, polyisoprene rubber, styrene-butadiene rubber, polyisobutylene, butyl rubber, styrene-isoprene block copolymers, styrene-butadiene block copolymers, and styrene-ethylene-butylene block copolymers, and one or more of these may be used in combination.

[0046] Examples of tackifying resins include rosin-based resins such as rosin and rosin esters, terpene-based resins such as terpene resins, aromatic modified terpene resins, hydrogenated terpene resins, and terpene phenol resins, aliphatic petroleum resins, aromatic petroleum resins, copolymerized petroleum resins, alicyclic petroleum resins, coumarone-indene resins, and pure monomer resins, and condensation resins such as phenolic resins and xylene resins. These can be used alone or in combination of two or more.

[0047] Examples of softeners include mineral oils such as paraffin-based process oil, naphthene-based process oil, and aromatic process oil; liquid rubbers such as liquid polyisoprene, liquid polybutene, and liquid polyisobutylene; ester-based plasticizers; and vegetable oils. These can be used alone or in combination of two or more kinds.

[0048] The pressure-sensitive adhesive layer 30 may contain other components to the extent that the effects of the present invention are not impaired.

[0049] The thickness of the adhesive layer 30 is not particularly limited, and can be adjusted appropriately depending on the application of the masking tape 100.

[0050] 1-3.Release paper The release paper 30 is for protecting the adhesive layer 20, and is laminated on the surface of the adhesive layer 20 opposite the substrate 10. There are no particular limitations on the material of the release paper 30, and any known material can be used as appropriate. For example, if a paper surface coated with a release agent such as silicone resin is used, it can be easily incinerated and is environmentally friendly.

[0051] Although the masking tape 100 of this embodiment is shown to include the release paper 30, the present invention is not limited to this, and may be a straight roll without a release paper, taking into consideration productivity and environmental impact.

[0052] The masking tape 100 may also include other layers that are conventionally known. Examples of the other layers include a primer layer that enhances adhesion between the substrate 10 and the pressure-sensitive adhesive layer 20.

[0053] 2. Masking tape manufacturing method The masking tape 100 according to the present embodiment can be manufactured according to a conventionally known method. For example, the masking tape 100 can be manufactured according to the following procedure.

[0054] First, an adhesive containing each component of a rubber-based or acrylic-based adhesive, and, if necessary, other additives and solvents, is prepared (adhesive manufacturing process). Next, the adhesive is applied onto a substrate, the solvent is removed in a drying process, an adhesive layer is formed, and then the adhesive is wound up to the required length on a winding roller (coating process). In the case of an acrylic-based adhesive containing a crosslinking agent, the acrylic copolymer is crosslinked by heating in the drying process and maturing after winding up on the roll (maturing process). After maturing is complete, the adhesive is laminated with a release paper (lamination process). Multiple slits are formed in the substrate and the adhesive layer (slitting process). Finally, the rolled up product is cut to the required width to produce masking tape (cutting process).

[0055] In addition to the above procedure, a masking tape may be produced by transferring a pressure-sensitive adhesive layer previously formed on a separator to a substrate.

[0056] Although the embodiments of the present invention have been described above, these are merely examples of the present invention. A variety of configurations may be employed.

[0057] 3.Applications The masking tape according to the present invention can be preferably used to draw dividing lines indoors. For example, it can be used for painting lines for sports competitions on the floor of a gymnasium, etc. The method of using the masking tape 100 according to the present embodiment will be specifically described below.

[0058] When using the masking tape 100 of this embodiment, the substrate 10 and the adhesive layer 20 are peeled off from the release paper 30, and the substrate 10 is attached to a predetermined attachment position (such as a floor). After the substrate 10 is attached to a floor or the like, the central portion 12 of the substrate 10 can be peeled off while being cut along the longitudinal direction by the cutting process 40, with both end portions 11a, 11b of the substrate 10 still attached.

[0059] FIG. 4 is a plan view showing a state after peeling off the substrate 10 and the adhesive layer 20 from the release paper 30, attaching the substrate 10 to a predetermined position, and then peeling off the central portion 12 of the substrate 10 along the cutout 40. As shown in FIG. 4, when the central portion 12 of the substrate 10 is peeled off, only the two end portions 11a and 11b of the substrate 10 are attached to the predetermined attachment position. That is, the two end portions 11a and 11b of the substrate 10 are attached in parallel with a certain width. The area where the central portion 12 of the substrate 10 is peeled off (the area sandwiched between the two end portions 11a and 11b of the substrate 10) is in a state where the floor or the like is exposed, and becomes an area (coating area P) where paint or the like is applied. After the paint is applied to the coating area P, the two end portions 11a and 11b of the substrate 10 are peeled off, and line coating is applied to a predetermined position on the floor or the like. This eliminates the need to measure the width of two tapes with a ruler and check the position where the tape is to be applied each time, as was done in the conventional method, and allows the task of applying the tape to the specified position to be performed more efficiently and accurately. [Explanation of symbols]

[0060] 10 Base material 11a One end part 11b Other end part 12 Central part 20 Adhesive layer 30 Release paper 40 Cutting 41a Slit processing 41b Slit processing 100 Masking Tape

Claims

1. A masking tape comprising a substrate and an adhesive layer laminated on at least one surface of the substrate, The base material has a plurality of cutouts formed along a longitudinal direction of the base material for cutting out a portion of the base material, A center line between one long side of the base material and the other long side of the base material is used as a reference, The cutouts are formed between the center line and one of the long sides, and between the center line and the other long side of the masking tape.

2. The masking tape according to claim 1 , wherein the cutout comprises a plurality of slits.

3. 3. The masking tape according to claim 2, wherein the distance from the long side of the base material to the slit is 5 mm or more.

4. 3. The masking tape according to claim 2, wherein the length of the slits is 10 mm or more, and the distance between the plurality of slits is 0.2 mm or more.

5. The masking tape of claim 1 , wherein the substrate is formed from a paper material.

6. The masking tape according to claim 1 , wherein the adhesive layer comprises one or more adhesives selected from an acrylic adhesive or a rubber adhesive.

7. The masking tape according to any one of claims 1 to 6, which is used for marking compartment lines indoors.

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