JP4764709B2 - Adhesive tape roll - Google Patents

Description

  The present invention relates to a pressure-sensitive adhesive tape roll wound so that the pressure-sensitive adhesive surface of a single-sided pressure-sensitive adhesive tape faces the front side (outside). More specifically, the present invention relates to a configuration of a cut line for cutting the pressure-sensitive adhesive tape every predetermined length. Is.

Adhesive tape roll for cleaning, for example, as shown in Patent Document 1, one single-sided adhesive tape adhesive surface is formed on the surface of the strip-like base material, in a roll shape facing the adhesive surface of the front winding It is made of a rotating one, mounted on a dedicated jig (see FIG. 3B of Patent Document 1), and rolled while bringing the adhesive surface into contact with the surface to be cleaned such as the floor, thereby removing the dust on the surface to be cleaned. Can be caught with.

  The other surface (anti-adhesive surface) of the base material is provided with a release treatment surface to which a release material such as silicon resin is applied. The peel-treated surface is a contact surface with which the adhesive surface of the lower-layer adhesive tape comes into contact when the adhesive tape is laminated in a roll shape, and is provided to facilitate peeling when the outermost-layer adhesive tape is peeled off. .

  However, the material cost and the production cost are higher on the peeling treatment surface than before. In addition, if the adhesive strength (interlayer adhesive strength) of the adhesive layer to the release treatment surface is too weak, when the adhesive tape roll is rolled on the floor surface, the interlayer adhesive strength is reduced to the adhesive strength between the adhesive tape and the floor surface. It may be lost and the adhesive tape may stick to the floor surface, which may cause a so-called rail pulling phenomenon.

  In view of this, the present applicant has proposed a technique that eliminates the above-described peeling treatment surface as Japanese Patent Application No. 2005-315992. According to this, by further providing, for example, a strip-like release material layer on the adhesive material layer, the release treatment surface provided on the back surface of the substrate becomes unnecessary, and production can be performed at a lower cost.

However, the following problems remain in the above-mentioned prior application invention. That is, the release material layer described in the invention of the prior application is composed of a synthetic resin material whose main component is a slightly sticky rubber or the like that has almost no adhesiveness. Shin to thread the building.

Therefore, when a so-called perforation structure in which cut parts and uncut parts are alternately arranged is used as the cut line, the release material layer existing on the uncut parts is not cut, so the adhesive tape is cut off. If, there is a possibility that the separation material layer is put away Shin the Activity filamentous.

Utility Model Registration No.2521127

  Then, this invention was made | formed in order to solve the subject mentioned above, The objective is providing the adhesive tape roll which can cut | disconnect reliably along a cut | interruption, without the peeling material layer raise | generating stringing. There is.

In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 is partially formed on the pressure-sensitive adhesive layer as a peeling means for the pressure-sensitive adhesive layer formed on substantially the entire one surface of the base material and the other surface of the base material. It was closed and a separation material layer containing a rubber-based material, an adhesive tape on the other surface of the base material to release treatment for one surface above has not been made, approximately every one rotation length along the width direction In the adhesive tape roll formed by winding so that the adhesive surface faces the front side while forming a cut for cutting , the cut cuts all of the release material layer present on the line of the cut In addition, the deepest part is characterized by being held in the base material .

The invention according to claim 2, Oite to the claim 1, said cut includes a first cut portion deep depth and a shallow depth second cutting unit along the width direction of the adhesive tape It is characterized by a perforated structure arranged alternately.

The invention according to claim 3, Oite to the claim 2, the first cutting unit, its deepest portion is characterized by being fastened in the base material.

The invention described in claim 4 is characterized in that, in the above-mentioned claim 2 , the deepest portion of the second cut portion is fastened in the adhesive material layer.

The invention according to claim 5 is partially formed on the pressure-sensitive adhesive layer as a peeling means for the pressure-sensitive adhesive layer formed on substantially the entire one surface of the base material and the other surface of the base material. A pressure-sensitive adhesive tape having a release material layer containing a rubber-based material, and having a reinforcing laminate layer provided on the other surface of the base material, is cut substantially every circumferential length along its width direction. In the pressure-sensitive adhesive tape roll formed by winding so that the adhesive surface faces the front side while forming a cut for making the cut , the cut cuts all of the release material layer existing on the line of the same cut In addition, a perforated structure in which first cut portions penetrating the base material and second cut portions whose deepest portions are held in the base material is alternately arranged.

A sixth aspect of the present invention is characterized in that, in the fifth aspect , the deepest portion of the second cut portion reaches the vicinity of the interface between the base material and the laminate layer.

  According to the present invention, since all of the release material layer existing on the cut line is surely cut, the release material layer can be surely peeled off along the cut line without stringing. it can.

  Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. FIG. 1 is a perspective view of an adhesive tape roll according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA.

  The pressure-sensitive adhesive tape roll 1 has a pressure-sensitive adhesive tape 2 having a pressure-sensitive adhesive surface 22 formed on one surface of a tape-like base material 21 and a core 3 with the pressure-sensitive adhesive surface 22 facing the front side (the upper surface side in FIG. 1). It consists of what was wound in roll shape along.

  Usually, a core made of cardboard is used for the core 3, but other materials such as a synthetic resin may be used. In addition, a so-called coreless type in which only the adhesive tape 2 is wound in a roll shape without using the core 3 may be used, and in the present invention, the core 3 is an arbitrary component.

  The base material 21 is made of paper, for example, and as shown in FIG. 2, an adhesive surface 22 to which an adhesive material is applied is formed on one surface (surface). In this example, the adhesive is made of SIS (styrene-isoprene-styrene) -based adhesive added with various additives such as tackifier, naphthenic oil, anti-aging agent, etc. Depending on the surface (for example, flooring, carpet, etc.), strong adhesion, weak adhesion, and the like may be arbitrarily selected. Further, the material of the base material 21 may be a resin film or a non-woven fabric other than paper.

  The adhesive surface 22 is composed of an adhesive material layer in which an adhesive material is solidly applied to one surface of the base material 21 to a uniform thickness T1, and in this example, the thickness T1 of the adhesive material layer is 15 to 20 μm. Has been applied.

  At both ends of the adhesive surface 22 of the base material 21, there are provided non-adhesive parts (dry edges) 23, 23 to which no adhesive material is applied. In this embodiment, the non-adhesive parts 23, 23 are arbitrary. Component.

  On the adhesive surface 22, a peeling means 4 is provided to prevent the upper-layer-side adhesive tape 2 and the lower-layer-side adhesive tape 2 from sticking to each other. As shown in FIG. 2, the peeling means 4 has a release material layer 41 formed in a stripe shape in parallel along the feeding direction of the adhesive tape 2 on the adhesive surface 22, and they have a predetermined interval (this In the example, a large number are arranged with an interval W1 = 1.7 mm).

  The release material layer 41 preferably has a width W2 of 1 mm or less and a thickness T2 of 30 to 120 μm. That is, if the width of the release material layer 41 is greater than 1 mm, the adhesive force may be excessively reduced. Moreover, when the thickness of the release material layer 41 is less than 30 μm, the adhesive surface may stick to the upper base material, which may cause base material destruction. On the other hand, if it is thicker than 120 μm, the adhesive strength may be excessively reduced.

  In this embodiment, the release material layer 41 is formed in a streak shape along the feeding direction of the pressure-sensitive adhesive tape 2. May be. That is, if the occupation ratio per unit area with respect to the adhesive surface 22 is 5% or more and 50% or less (more preferably 10% or more and 30% or less), the form is arbitrary according to the specification.

  That is, when the exclusive area of the release material layer 41 is less than 5%, the release material layer 41 is too small, and the base material may stick to the adhesive surface and may cause destruction of the base material when peeled off. On the other hand, if it is larger than 50%, the adhesive force to the surface to be cleaned is too small, so that not only the cleaning ability may be lowered but also a rail pulling phenomenon may be caused.

  In this example, the release material layer 41 is mainly composed of a rubber-based material such as CEBC (olefin crystal: ethylene: butylene: olefin crystal block copolymer), and an SIS system for improving the affinity with the adhesive surface 22 there. It consists of a polymer added in a small amount and various additives such as tackifier and paraffin oil.

In this example, the release material layer 41 is obtained by using an additive such as paraffin oil to obtain slight adhesion, but in addition to this, microballoon mixing or mechanical foaming using N ₂ gas or CO ₂ gas. A mechanical method such as the above may be used. As another method, an elastic powder may be mixed, or a plasticizer may be added to the acrylic adhesive material.

  When it is necessary to make the base material 21 thin, it is preferable that a laminate film 24 for reinforcing the base material 21 is provided on the other surface (back surface) of the base material 21. In this example, the laminate film 24 is made of a thin film made of polyethylene and is provided integrally with the base material 21.

  Usually, the laminate film 24 can be made unnecessary by controlling the adhesiveness of the release material layer 41. In addition, when the base material 21 is a plastic film, the laminate film 24 is unnecessary.

  Referring to FIG. 1 again, the adhesive tape 2 is provided with a cut line 5 for cutting almost every circumference. In the present invention, the cut 5 is a cutting means used for cutting the adhesive tape 2 along the width direction.

  As shown in FIG. 3, when the cut 5 is wound with the adhesive surface 22 of the adhesive tape 2 facing the front side, rollers 5 a and 6 b provided in a pair of upper and lower sides sandwich the adhesive tape 2 in the adhesive tape conveyance path. It is formed.

Of the rollers 6a and 6b, one roller 6a is integrally provided with a blade 61 for forming a cut. In this example, the roller 6 a is the blade 61 in a cylindrical roll body is die cut roller that is integrally formed. The other roller 6 b is a receiving roller that receives the blade 61.

  As shown in FIG. 4, the blade 61 is configured by alternately arranging first cutting blades 62 having a long length from the back to the blade edge and second cutting blades 63 having a short length along the width direction. . In this example, each of the cutting blades 62 and 63 is a double-edged blade having a V-shaped tip, but may be a single-edged blade.

  The cut 5 is formed by inserting the blade 61 toward the adhesive tape 2. That is, as shown in FIG. 4, the cut 5 is formed by alternately arranging two cut portions having different depths, ie, a first cut portion 51 and a second cut portion 52 along the width direction (the left-right direction in FIG. 4). Consists of.

  The first cutting part 51 is formed from the pressure-sensitive adhesive surface 22 side of the pressure-sensitive adhesive tape 2 toward the laminate film 24, and the tip (deepest part) 51 a is fastened in the base material 21. According to this, since the deepest part of the 1st cutting part 51 does not penetrate the adhesive tape 2, the effect which guides the cutting | disconnection of the adhesive tape 2 along the cut 5 does not fall, but the cut 5 vicinity of the adhesive tape 2 The strength of can be increased.

  Similar to the first cutting part 51, the second cutting part 52 is formed from the adhesive surface 22 side toward the base material 21, and the tip (deepest part) 52 a is fastened in the adhesive material layer 22. In this example, the second cutting part 52 is disposed at a position facing all the release material layers 41 existing on the cut line 5. However, the cutting parts 51 and 52 may be disposed alternately. However, it is not always necessary to provide the second cutting part 52 and the release material layer 41 so as to face each other.

  In the case where the reinforcing laminate film 24 is provided on the base material 21, the cut 5 is formed so that the first cutting portion 51 is the base material 21 if the deepest portion of the second cutting portion 52 is fastened in the base material 21. It may be a through-hole penetrating through. In this case, the second cutting part 52 is preferably formed to a depth that reaches the vicinity of the interface between the base material 21 and the laminate film 24. In addition, the 2nd cutting part 52 may be used as a through-hole, and the 1st cutting part 51 may be fastened in the base material 21. FIG.

  According to this, it is possible to surely cut all the release material layer 41 existing on the cut line 5, and reliably prevent the release material layer 41 from causing stringing when the cut line 5 is cut. it can. In this example, the cut 5 has a perforation structure, but it is sufficient that the release material layer 41 is reliably cut along the cut 5, and may be, for example, a slit-like cut.

  In this example, the pressure-sensitive adhesive tape 2 is wound in a roll shape, and a cut 5 is formed therein. However, for example, a sheet body may be laminated, and the cut of the present invention may be provided at the cut of the pressure-sensitive adhesive tape. If the structure is adopted, the form of the adhesive tape can be freely changed according to the specifications.

The perspective view of the adhesive tape roll which concerns on one Embodiment of this invention. AA sectional view taken on the line AA of FIG. Explanatory drawing explaining the formation procedure of the cut | interruption of an adhesive tape roll. Explanatory drawing explaining the relative positional relationship of an adhesive tape and a cutting blade.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive tape roll 2 Adhesive tape 21 Base material 22 Adhesive surface 3 Core 41 Release material layer 51 1st cutting part 52 2nd cutting part 61 Cutting blade

Claims (6)

A pressure-sensitive adhesive layer formed over substantially the entire surface of one side of the base material, and a release material layer including a rubber-based material partially formed on the pressure-sensitive adhesive layer as a peeling means for the other side of the base material possess the door, the adhesive tape on the other surface of the base material to release treatment for one surface above has not been made, while forming a cut for cutting substantially each one circumference length along the width direction In the pressure-sensitive adhesive tape roll formed by winding so that the adhesive surface faces the front side ,
The adhesive tape roll , wherein the cut cuts all of the release material layer existing on the line of the cut, and the deepest part thereof is held in the base material . The cuts, claim wherein the first cutting portion deeper depths, that the shallow depth second cut portion is a perforation structure arranged alternately along the width direction of the adhesive tape 1 The adhesive tape roll described in 1. The pressure-sensitive adhesive tape roll according to claim 2 , wherein the deepest part of the first cut part is held in the base material. 3. The pressure-sensitive adhesive tape roll according to claim 2 , wherein a deepest portion of the second cut portion is fastened in the pressure-sensitive adhesive layer. A pressure-sensitive adhesive layer formed over substantially the entire surface of one side of the base material, and a release material layer including a rubber-based material partially formed on the pressure-sensitive adhesive layer as a peeling means for the other side of the base material And forming a cut for cutting the adhesive tape provided with a reinforcing laminate layer on the other side of the substrate substantially every circumferential length along its width direction, In the pressure-sensitive adhesive tape roll formed by winding so that the adhesive surface faces the front side,
The cut line cuts all of the release material layer existing on the line of the cut line, and a first cut part that penetrates the base material, and a second cut part whose deepest part is retained in the base material. viscous adhesive tape roll you characterized in that but a perforation structure disposed alternately. The pressure-sensitive adhesive tape roll according to claim 5 , wherein the deepest portion of the second cut portion reaches the vicinity of the interface between the base material and the laminate layer.

Images