JP2544951B2 - Adhesive tape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is for the work of positioning the paint finish with a stain prevention material at the time of painting buildings, building materials, furniture, daily goods, machines, machine parts, etc., and for protection. The present invention relates to an adhesive tape that can be conveniently used for positioning an insertion portion (swallowing portion) when assembling work such as a building material covered with a covering material or a machine part.

(Prior art) When painting buildings, such as wall painting, steel frame painting, and fence painting, apply a wide paper or plastic film widely with adhesive tape to prevent the surroundings from getting dirty due to splashes of painting materials. There is. In addition, when painting the bottom of the recess with a certain thickness, for example, when painting wall material between the pillars of a building, or when applying decorative coating to the recesses of furniture, repeat painting with a certain thickness multiple times. It is necessary to perform this, but to describe the case of painting between the pillars, it is necessary to configure the relatively rough underlayer that adheres well to the surface of the underlayer, the intermediate layer on the surface and the finishing layer on the outer surface to the desired thickness. In addition, as described above, it is necessary to prevent the wall material from unintentionally adhering to the surrounding pillars, the sill, the sill, the rim, the skirting board, and the like and causing stains. Therefore, stick an adhesive tape of the desired width to the pillar in a straight line up to the expected finish surface of the underlayer, cover the other part and apply a predetermined thickness to coat the next intermediate layer. Peel off the adhesive tape from the pillars once more, pull down again to the planned finished surface of the intermediate layer, i.e., pull down by the thickness of the intermediate layer, and then attach it again in a straight line, and make the intermediate layer have a desired thickness without polluting the surroundings. After painting, the adhesive tape is similarly peeled off and further pulled down to the intended finish surface of the finishing layer, i.e., by the thickness of the finishing layer, and again attached in a straight line again to protect the pillars from damage. The method of painting with the thickness of has been adopted.

In this case, instead of covering with only the adhesive tape, a wide polyethylene film or the like is attached to the adhesive material along the edge of the edge of the adhesive tape opposite to the coating positioning side. Conventionally, a method of covering a large portion is also known.

As another method, prepare three adhesive tapes having a desired width or the above-mentioned polyethylene film adhered, and first place the next one at the finishing layer finish surface scheduled position and the next one as the intermediate layer finish surface. At the planned position, one more sheet is attached to the finished surface of the underlayer, and the other edge is sequentially attached to each of the edges, and after the underlayer is coated, the adhesive tape that was finally attached is removed. After removing the pressure-sensitive adhesive tape and coating the final finishing layer, each thickness was adjusted by the method of removing the first pressure-sensitive adhesive tape, and at the same time, stain prevention was performed.

Also, when building materials such as glass plate, aluminum plate, acrylic plate, etc. are fitted into the window frame or other mounting recesses by fitting or machine parts are inserted into other members to be incorporated,
Of the covering materials that were widely covered to prevent damage and stains, at least only the above-mentioned installation part must be removed so as not to interfere with the installation work, but the minimum required removal work is complicated and eventually Ignored the risk of contamination and removed more widely than necessary, and used a cutter knife to cut away the necessary parts under conditions where the protected materials such as building materials and machine parts could be damaged.

(Problems to be Solved by the Invention) However, in the painting operation, it is necessary to attach the adhesive tape repeatedly as many times as the number of times of painting, and it is necessary to position the adhesive tape so that it can be attached in consideration of the painting thickness. These operations are difficult and lacking in accuracy in a narrow place or a dark place, and they are also highly skilled operations, so improvement has been desired.

Furthermore, when building materials or machine parts to be incorporated into other parts, which are covered with a protective material such as a polyethylene film or a cushioning sheet on the entire surface to prevent contamination or damage, are to be installed in a predetermined place, It has been desired to develop a method of removing only the portion to be incorporated in accordance with the assembling position without damaging the cutter knife.

(Means for Solving Problems) The inventors of the present invention have conducted extensive studies to solve the problems of the conventional method, and as a result, by using a special adhesive tape, a simple attaching work and a simple peeling work are performed. The present invention has been completed by finding that conventional painting work and assembling work can be effectively performed.

The gist of the present invention is that an objective layer and a backing layer are laminated and integrated in a long length, and the objective layer has one or a plurality of cuts continuous or not at a desired distance from one long edge along the length direction. The backing layer has a tear propagation property in the lengthwise direction, and the outer surface of the backing layer is separated from the adhesive layer of the objective layer by a continuous support layer and an adhesive layer provided on the outer surface thereof. The pressure-sensitive adhesive tape is composed of a support layer having moldability.

Hereinafter, the contents of the present invention will be described with reference to the drawings illustrating an embodiment.

FIG. 1 is a perspective view showing a state in which the adhesive tape 1 according to the present invention is wound in a spiral shape with the adhesive layer 2a inside. The adhesive layer 2a is in contact with the releasable surface 3a of the backing layer.

2 to 4 show the adhesive tape 3 according to the present invention.
FIG. 3 is a partially cutaway enlarged perspective view showing the embodiment and cut along the line AA of FIG. 1.

In FIG. 2, the adhesive tape 11 shows a state in which the objective layer 12 and the backing layer 13 are superposed and laminated by the adhesive 14. The objective layer 12 is a support layer 12b and an adhesive layer 12a on its outer surface.
The support layer 12b has a plurality of cuts 12c, 12c ... Formed over the entire thickness of the support layer 12b at a desired distance from the left end and completely cut into a plurality of strips 12b1, ... 12bn. ing. As the support layer, paper, cloth, plastic, cellophane, etc. are used. When the adhesive layer 12a on the outer surface is applied after forming the strip, there is no cut at a position corresponding to the cut 12c, but the adhesive layer 12a is first formed on the support layer 12b.
When the above-mentioned cut is made after applying, the cut is also formed in the adhesive layer. However, when wound as shown in FIG. 1 and left for a long period of time, the adhesive usually flows and the cut line is often lost. However, the gist of the present invention does not depend on the presence or absence of the cut of the adhesive layer.

The backing layer 13 is composed of a support layer 13b made of a material having a good tear propagation property in the longitudinal direction. Further, the outer surface thereof is provided with releasability. Tear propagation property is a characteristic of edge tearability, and cuts are made by cutting the edges of films, sheets, woven fabrics, etc. with both sides of the cut and applying shearing force for tearing. Tear starting from scratches propagates, while edge tearability means that when a shearing force of tear is applied to one point of a smooth edge of a film, sheet, woven fabric, etc., the edge is cut. What happens is that tear propagation continues after the cut occurs at the edge.

The backing layer used in the present invention has a synthetic resin film,
Paper and cellophane are suitable.

Biaxially stretched films or sheets of polypropylene, polyester, nylon, etc. are inferior in edge tearing property but have good tear propagation property, and therefore are preferably used as the backing layer of the present invention.
A long-direction uniaxially stretched film of these various materials, a biaxially stretched film which is stretched at a low degree in the width direction as compared with the long-side direction, but cellophane and the like have good end tearing property and tear propagation property. It is preferably used for. Furthermore, a woven fabric in which the strength of the weft yarn is made weaker than the strength of the warp yarn (longitudinal direction) also has this property and is used as the material of the present invention.

However, in addition to films and sheets that are unstretched in the longitudinal direction or weakly stretched and strongly stretched in the width direction, woven fabrics in which the strength of the yarn is reversed have poor end tear tearability and tear propagation properties. Not suitable for invention.

This tear propagation property is a characteristic required for strip removal of the objective layer, and when strips are removed by a desired width, they are removed integrally and with almost the same width. If the width becomes a little wider or narrower, it will be removed along the notch of the objective layer, so there is no problem.

Unless the outer surface of the backing layer 13 has releasability from the adhesive layer 12a of the objective layer 12, it is difficult to store the adhesive tape 11 according to the present invention. This releasability is imparted by forming the release layer 13a by coating or laminating a silicone resin or a fluorine resin on the outer surface of the backing layer, and by changing the material of the adhesive layer, polypropylene, polyethylene, etc. In such a case, the releasability imparting process as described above becomes unnecessary.
Therefore, the releasability imparted in the present invention includes the case where the releasability imparting treatment is particularly applied to the backing layer and the case where the adhesive force of the adhesive layer to the backing layer is lowered.

FIG. 3 shows another example of how to make a cut in the objective layer 22 of the adhesive tape 21. A part of the support layer 22b having the adhesive layer 22a is left in the thickness direction and on the backing layer 23 side. Cut 22
c, 22c ... Are provided, and the strips 22b1, ... 22bn are connected on the side of the backing layer 23.

FIG. 4 shows the case where the cut lines in FIG. 2 are discontinuous. That is, the cut line 32 is formed over the entire thickness of the objective layer 32 of the adhesive tape 31.
Although there are c and 32c, there are discontinuous portions X1 to Xn in the longitudinal direction, and the strips 32b1, ... 32bn ... Are connected to adjacent strips in the X1 to Xn.

The pressure-sensitive adhesive tape according to the present invention is sufficient if it can be easily divided into strips in the longitudinal direction at the time of use, and can be used even if it is not completely cut as described above. Further, the present invention is not limited to the above embodiments.

As for the position of the cut of the objective layer, one or more cuts are formed at a desired position from one edge of the adhesive tape. This position is for the purpose of positioning the coating thickness and the mounting depth of the building material, which is the object of the present invention, and by selecting the notch at the desired position and removing the strip along with the backing layer along it. Go.

If the backing layer has a good end-tear property, it can be torn along with the strip at the tip of the toe, and thereafter the tear propagation property can be utilized. When the tearability of the end tear is poor, a slight cut may be made at the end of the adhesive tape with a knife or the like after application, and after that, it can be removed together with the strip by utilizing the tear propagation property.

When the adhesive tape is removed into strips, the objective layer is separated linearly along the cut lines, and the protective material is removed only from the built-in part while maximizing protection such as coating positioning and antifouling of building materials. The backing layer is what makes this objective layer easy to be striped originally, and is completely integrated so as not to fall apart when not in use or when it is pulled out or stuck. It is for the purpose of making it easier to carry out the work of removing a part of the objective layer.

FIG. 5 is a perspective view showing an example of the case where the adhesive tape of FIG. 4 is used for wall coating, and the edge of the adhesive tape 41 according to the present invention is brought into contact with the surface of the base material 5 and is attached to the adjacent pillar 8. Adhere to the widest possible area and aim for antifouling, and fine lines according to the coating thickness from the base material side
41b1 is shown with the backing layer removed. For the sake of convenience, it is indicated as a strip 41b1, but it is naturally a strip having a backing layer integrated therein.

FIG. 6 shows that a protective layer such as a cushioning material 7 is applied to the surface of the building material 6 and the adhesive tape 51 of the present invention is attached to one end edge of the building material 6 where the building material is incorporated. The strips 51b1 and 51b2 are removed together with their backing layers by a desired width. The broken lines in FIGS. 5 and 6 indicate the positions of the cuts in the objective layer for convenience.

FIGS. 7 (a) to 7 (e) are working examples in which the adhesive tape according to the present invention is used to concretely coat the surface 5s of the base material 5 between the pillars 8 and 8 with a wall, and the working order is shown.

There is a base material 5 between the pillars 8 and 8 of FIG. 7 (a), and a wide adhesive tape 11 (the one shown in FIG. 2 is used) 11 is formed on the edge of the cut 12c at the base material surface 5s. It is affixed to the surface of the column and is widely applied to prevent pollution. Cut the strips 12b1 and 12b2 from the edges together with the backing layer (Fig. 7 (b)). For example, the underlayer A is applied with the new edge thus formed as the wall surface position. Similarly strips of adhesive tape 12 to desired width
b3 to 12b6 are torn and removed, and the intermediate layer B (Fig. 7 (d)) and the surface finishing layer C (7th
(Fig. (E)) is applied, and when this is finished, the remaining adhesive tape
Remove 11 In the case of removing the above-mentioned strips, if the edge tearing property of the backing layer 13 is poor, it can be easily done by appropriately inserting cuts 13a, 13b, 13c.

In the above description, the antifouling with only the adhesive tape is described, but for the antifouling of a wide area, even with a narrow adhesive tape, an antifouling material such as a wide polyethylene film is attached to the side opposite to the edge contacting the base material. The way to get there is possible.

FIGS. 8 (a) to 8 (c) show an example of the order of usage of this adhesive tape when a building material such as a glass plate, an aluminum plate or an acrylic plate is incorporated in a required portion.
The adhesive tape 31 (the one shown in FIG. 4 is used) 31 according to the present invention is attached to the periphery of the glass plate G.
FIG. 6C is a sectional view taken along the side of the glass plate G. The cushioning material F for protection is located at the center of the glass plate, and is attached to the glass plate by the adhesive tape 31. Adhesive tape
A notch 33a is formed at a desired position of the backing layer 33 of 31 if necessary. If the backing layer has good edge tearing properties, it can be easily torn with the tip of the toe. In this way, the strips 32b1 to 32b3 of the objective layer are removed together with the backing layer. The position of the notch 33a is provided almost according to the width of the strip to be removed, and the width of the strip is determined according to the depth D of the recess of the structure H. Except for this removed portion, it remains as it is with the cushioning material F for protection, and the contamination of the building material during the assembling work,
Prevent damage.

(Operation) As can be seen from the above description and Examples, the present invention provides an adhesive tape capable of maximally and easily preventing stains and damages during coating and assembling.
The tear propagation properties of the backing layer exhibit a well-combined effect.

[Brief description of drawings]

FIG. 1 is a perspective view of an adhesive tape according to the present invention when wound, and FIGS. 2 to 4 are cross-sectional views of the adhesive tape according to the present invention, showing various examples in which the method of making a cut in an objective layer is changed. Indicates. FIGS. 5 and 6 show the usage state of the adhesive tape of the present invention in one embodiment, such as sticking and removal, and FIGS. 7 (a) to 7 (e) show the adhesive tape of the present invention. The order of steps will be shown in an example of the case where a wall is coated with a tape.
Figures 8 (a) -8 (c) show cross-sectional views of an embodiment of using the adhesive tape of the present invention to incorporate building materials into a construction. The main symbols used in the drawings will be described. 1, 11, 21, 31, 41, 51 …… Adhesive tapes 12, 22, 32 …… Objective layers 13, 23, 33 …… Backing layers 12a, 22a, 33a …… Adhesive layers 13a, 23a, 33a …… Separation Molded surface 12b, 22b, 32b …… Support layer 12b1, 22b1, 32b1 …… Fine strips 12c, 22c, 32c …… Cuts 5 …… Underlayer 8 …… Pillar F …… Protective buffer G …… Glass plate H ... Construct

Claims (1)

(57) [Claims] 1. An objective layer and a backing layer are laminated and integrated in a lengthy manner, and the objective layer has one or a plurality of cuts continuously or at a desired distance from one long edge of the lengthwise direction. The backing layer has a tear propagation property in the lengthwise direction, and the outer surface of the backing layer is separated from the adhesive layer of the objective layer by a continuous support layer and an adhesive layer provided on the outer surface thereof. An adhesive tape comprising a support layer having moldability