JP2006002006A - Adhesive tape manufacturing method and adhesive tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive tape that is easy to cut even in a double-sided tape using a foamed tape and generates less dust on a release paper, and a method for producing the same.
SOLUTION: A long tape base material 10 made of foam material is continuously conveyed, and a perforated cutting line 11 having a perforation is formed in the tape base material 10 in a width direction by a cutting line forming means 50 at a processing position P1. To do. The adhesive transfer by the long first release paper 31 is started at the coating position P2 subsequent to the processing position P1, and finally the adhesive layers 41 and 42 are formed on both surfaces of the tape substrate 10, A double-sided tape is manufactured by leaving the release paper 32 on one pressure-sensitive adhesive layer 42 and wound up into a roll.
[Selection] Figure 1

Description

  The present invention relates to a pressure-sensitive adhesive tape obtained by applying a pressure-sensitive adhesive to a long tape base material such as a foam tape and winding it.

  An adhesive tape (double-sided tape, single-sided tape) is difficult to cut as desired because the tape base material stretches or breaks diagonally when it is cut by hand. In particular, double-sided tape using foam tape made of foam material such as foamed polyethylene or foamed acrylic as a tape base material is difficult to cut well, so it can be cut using a dedicated tape cutter, It is usual to cut with a cutter knife.

In addition, there is a single-sided tape in which a perforated cutting line in the width direction is formed in a long tape base material by punching so that it can be easily cut from the cutting line in a short time ( For example, see Patent Document 1). This single-sided tape is manufactured by winding the back side of the tape base material with a pressure-sensitive adhesive, and winding the surface side with a material that does not adhere to the pressure-sensitive adhesive.
Japanese Patent Laid-Open No. 2001-327450 (FIG. 1)

  Dedicated tape cutters, scissors, and cutter knives may be difficult to cut in a short time with a good tape substrate depending on how they are used. In addition, dedicated tape cutters, scissors, and cutter knives are separate from the adhesive tape, so that maintenance management is troublesome.

  Moreover, the single-sided tape in which the cutting line for manual cutting is formed on the tape substrate is convenient because it can be easily cut by hand from the cutting line without using a dedicated tape cutter, scissors, or cutter knife. Such a cutting line for cutting a single-sided tape can also be formed, for example, on a roll-type double-sided tape. That is, in the case of a roll type double-sided tape in which an adhesive layer is formed on both sides of a tape base material which is a long foam tape using, for example, release paper, and the tape base material is wound together with the release paper, the tape A cutting line can be perforated in the width direction on a double-sided tape having a four-layer structure with a base material, a pressure-sensitive adhesive layer on both sides thereof, and a release paper attached to one pressure-sensitive adhesive layer.

  However, when such a roll type double-sided tape is used by adhering it to an adherend surface such as a wall surface of a house, a long double-sided tape tape substrate is cut together with a release paper at a predetermined length, and the predetermined cut Because the release paper is peeled off by adhering a length of double-sided tape to the adherend surface, if one piece of double-sided tape is adhered to many places on the adherend surface, a plurality of double-sided tapes of the same length This release paper is generated as garbage, and it takes time and effort to clean up the garbage. The problem of dust due to such release paper also occurs when cutting double-sided tape with scissors or a cutter knife.

  An object of the present invention is to provide a pressure-sensitive adhesive tape that can be easily cut by hand and can reduce the problem of dust generation even when used continuously on an adherend surface, and a method for producing the same. is there.

  The method of the present invention that achieves the above object includes a processing step of forming cutting lines for cutting in the width direction in a plurality of longitudinal directions of a long tape substrate, and a tape substrate on which cutting lines for cutting are formed. And a coating step of transferring the adhesive applied to the release paper of another member.

  Here, as the adhesive tape, either a single-sided tape or a double-sided tape can be applied. Moreover, the tape base material can apply the foaming tape of the double-sided tape difficult to cut by hand effectively. The cutting line for manual cutting formed in the width direction on the tape base material is a foam tape with a perforation that forms a straight line or a curve in the width direction orthogonal to the longitudinal direction of the tape base material or the width direction oblique to the longitudinal direction. It is desirable to easily cut the tape base material in a short time. The arrangement pitch of the cutting lines in the longitudinal direction of the tape substrate is practically 5 mm to 20 mm, but may be a pitch exceeding 10 cm depending on the application. An adhesive is applied to the tape base material on which such a cutting line is formed using a release paper. Release paper is used only for transferring adhesive to the tape substrate and / or wound with the tape substrate while the adhesive is transferred to the tape substrate and attached to the tape substrate. Can be used. By forming the cutting line on the tape base material and transferring the adhesive with the release paper, the cutting paper such as perforations is not processed on the release paper, making it easy to cut only the tape base material. The release paper used for can be reused. In addition, in a roll type adhesive tape in which a tape base material and release paper are wound, even if the tape base material is manually cut to a desired length and a large number of tape base materials are adhered to the adherend surface, a large number of tape base materials are used. The release paper common to the material can be left without being divided, and the problem of dust caused by the release paper can be reduced.

  In the method of the present invention, the tape base material is continuously conveyed in the longitudinal direction, and cutting lines are sequentially formed at predetermined processing positions one by one, and the tape substrate is separated from a predetermined coating position after the processing position. Adhesive transfer by pattern paper can be started.

  Here, the processing position and the coating position may be the same position, but it is desirable to slightly separate the processing position and the coating position in order to stably perform the cutting line processing and the adhesive transfer.

  In the present invention, the first pressure-sensitive adhesive applied to the long first release paper is transferred to one side of the tape base material, and the tape base material is taken up together with the first release paper. Coating process, and the tape substrate wound up in the first coating process is rewound, and the first release paper is peeled and collected, and applied to the second release paper that is long on the other side. The adhesive tape which is a double-sided tape can be manufactured by the 2nd coating process which rolls the 2nd adhesive agent and rolls up a tape base material with a 2nd mold release paper.

  The first release paper here is peeled off and collected from the tape substrate, and is reused in the production of the next double-sided tape. Such a release paper transfers the adhesive to the tape base material on which the cutting line for manual cutting has been processed, so that no cutting line is processed and can be recovered and reused as it is. It can contribute to manufacturing cost control.

  In the present invention, a step of forming a cutting line for manual cutting in the width direction on the second release paper can be added to the second coating step. In this case, by processing the cutting line on the second release paper wound together with the tape substrate, the release paper to be peeled off from the double-sided tape adhered to the adherend surface can be manually cut from the cutting line. Thus, the release paper can be easily processed.

  Further, the present invention is a double-sided tape type adhesive tape having a pressure-sensitive adhesive layer on one side of a long tape base material and two layers of pressure-sensitive adhesive layer and release paper on the other side. It is characterized by an adhesive tape having a plurality of manual cutting lines formed in the width direction at a constant pitch.

  The adhesive tape here can be a double-sided tape whose tape substrate is a foamed tape. Furthermore, it can be set as the double-sided tape which formed the cutting line for manual cutting in the width direction in each of the tape base material and the release paper in the longitudinal direction at a plurality of locations.

  Further, the arrangement pitch of the cutting lines of the tape base material in the longitudinal direction of the tape base material and the arrangement pitch of the cutting lines of the release paper in the longitudinal direction of the release paper can be made different. In this case, the arrangement pitch of the cutting lines of the release paper can be an integral multiple of the arrangement pitch of the cutting lines of the tape substrate. When the integral line is set so that the cutting line of the release paper coincides with one of the cutting lines 11 of the tape base, the adhesive tape including the release paper is placed at the cutting line where the release paper and the tape base coincide. Can be easily cut by hand.

  According to the present invention, even if the tape base material of the adhesive tape is a foam tape, it becomes easy to manually cut from the processed cutting line, and no separate object such as scissors or a cutter knife is required. An adhesive tape that facilitates the bonding operation can be provided. In addition, in a double-sided tape using a tape base material of foam tape, the double-sided tape is manufactured without processing the cutting line on the release paper, and the double-sided tape is used on the adherend surface. The release paper peeled from the plurality of double-sided tapes adhered to the landing surface can be collected and collected as a single sheet, and the problem of dust caused by the release paper can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  1 and 2 show an outline of a production apparatus for carrying out the method of the present invention, and FIG. 3 shows a specific example of the produced adhesive tape 1. FIG. 1 shows an apparatus for producing a double-sided tape. FIG. 1 shows a processing step A and a first coating process B, and FIG. 2 shows a second coating process C.

  Processing step A in FIG. 1 is a step of processing the cutting line 11 for manual cutting shown in FIG. The tape base material 10 is a foam tape made of a foam material such as foamed polyethylene or foamed acrylic, and a wide sheet-like tape base material 10 wound around the core member 12 is rewound and horizontally guided by a plurality of guide rollers 21. Then, it is continuously conveyed downward and is finally wound around the core member 13. A processing position P1 is installed at a fixed position along the conveying line of the tape base material 10, and the tape base material 10 is formed by a cutting line forming means 50 disposed at the processing position P1, for example, a pair of perforating blade rollers 51 and a receiving roller 53. A perforated cutting line 11 for perforation is perforated in the width direction perpendicular to the longitudinal direction.

  The perforating blade roller 51 is a cylinder extending in the width direction of the tape base material 10, and perforated blades 52 that are continuous in the axial direction are provided at four positions at intervals of 90 ° on the outer peripheral surface to project the tape base material 10. Rotate at the same speed along the top surface of Each time the perforating blade roller 51 rotates 90 °, a row of perforating blades 52 pierce the tape base material 10 and come out to form a single cut line 11 in the width direction in the tape base material 10. The receiving roller 53 suppresses tape base material deformation at the time of cutting line processing by the perforating blade roller 51, and performs cutting line processing satisfactorily. In addition, you may make it form the punching process of the cutting line 11 with the Thomson blade (not shown) which moves up and down at the process position P1.

  The coating position P2 of the first coating process B is installed at a fixed position immediately following the processing position P1, and the adhesive transfer by the long first release paper 31 is started from the coating position P2. . The first coating step B is a portion where the wide sheet-shaped release paper 31 wound around the core member 14 is rewound and continuously conveyed from above to the horizontal direction and downward by a plurality of guide rollers 23 and 24. Then, one side of the release paper 31 is passed through the adhesive 40 in the adhesive tank 27 in the middle of conveyance, and the first adhesive layer 41 is adhered. This first release paper 31 is brought into contact with one side of the tape base material 10 on which the cutting line has been formed at the coating position P2, and is wound around the core member 13 together with the tape base material 10 as it is. The layer 41 is transferred to one side of the tape substrate 10. The first adhesive layer is formed by passing the tape substrate 10 and the first release paper 31 between the pair of transfer rollers 22 and 22 'disposed at the coating position P2 and pressing them against each other. 41 is transferred with good reliability.

  The second coating process C in FIG. 2 will be described. The tape base material 10 is pulled out by the guide roller 25 together with the first release paper 31 from the adhesive tape roll wound around the core member 13 in the first coating step B, and is continuously conveyed in the horizontal direction and downward to be the tape base. The material 10 is wound around another core member 15. During this time, the first release paper 31 on one side of the tape base material 10 is separated from one side of the tape base material 10 by one transfer roller 22 and wound around the core member 17.

  Also, the second coating process C shown in FIG. 2 is a portion having the same configuration as the first coating process B of FIG. The release paper 32 is rewound and continuously conveyed along the plurality of guide rollers 23 and 24, and the adhesive 40 in the adhesive tank 27 is applied to one side of the second release paper 32 in the middle of the conveyance. Second adhesive layer 42. The second release paper 32 and the tape base material 10 are passed between a pair of transfer rollers 22 and 22 ′ so that they are pressed against each other so that the second adhesive layer 42 is attached to the tape base material 10. The sheet is transferred to one side, and the second release paper 32 is wound around the core member 15 together with the tape substrate 10 as it is.

  When the second coating step C is completed, a double-sided tape roll in which a predetermined length of double-sided tape is wound around the core member 15 is manufactured. The adhesive tape 1 shown in FIG. 3 is obtained by cutting the double-sided tape roll into predetermined widths. Since the first release paper 31 peeled off from the tape base material 10 and wound around the core member 17 in the stage of FIG. 2 remains in the original sheet shape without a cutting line, the first double-sided tape is manufactured as it is. It can be used as the second release paper in the second coating process. By reusing the release paper in this way, it is possible to effectively use resources and reduce the cost of manufacturing an adhesive tape.

  The usage example of the double-sided tape which is the adhesive tape 1 of FIG. 3 is shown to FIG. As shown in FIG. 4A, the adhesive tape 1 is pulled out from the double-sided tape roll, the release paper 32 is peeled off from the tip, and the tape substrate 10 is cut by hand from the desired cutting line 11. FIG. 4B shows a state in which the first cutting line 11 is cut from the tip of the tape base material, but the release paper 32 can be arbitrarily peeled and cut to the second and subsequent cutting lines 11. is there. Such manual cutting using the cutting line 11 is easy even if the tape substrate 10 is a foamed tape, and can be performed reliably in a short time. Manual cutting of the adhesive tape 1 can be performed in a state where an adhesive tape (double-sided tape) 1 'having a predetermined length at the tip is adhered to the adherend surface 2 as shown in FIG. Thus, when the adhesive tape 1 'having a predetermined length is sequentially adhered to a plurality of locations on the adherend surface 2, the release paper 32 remains long on the double-sided tape roll at hand of the operator. That is, when the double-sided tape is manually cut, the release paper remains uncut and does not scatter as dust.

  In the adhesive tape 1 of FIG. 3, it is possible to form a cutting line on the release paper 32. For example, as shown in FIG. 5, the cutting line forming means 50 'is also provided in the second coating process C. The cutting line forming means 50 ′ is a perforated blade roller 54 disposed along the second release paper 32 from the core member 16 toward the adhesive tank 27, and perforated perforated blades 55 are formed at equal intervals on the peripheral surface. Have. The punching blade roller 54 rotates at the same speed as the second release paper 32, and the punching blade 55 forms a perforated cutting line 11 ′ in the width direction on the second release paper 32.

  As in the adhesive tape 1 shown in FIG. 6, the arrangement pitch Pb of the cutting lines 11 ′ of the release paper 32 is set larger by an integer multiple than the arrangement pitch Pa of the cutting lines 11 of the tape substrate 10. As described with reference to FIG. 4, when the adhesive tape 1 was cut by hand at predetermined lengths and adhered to the adherend surface 2, the number of adhesive tapes used after being cut by hand cut became an appropriate number. By the way, the release paper 32 can be manually cut from the cutting line 11 ′ to reduce the generation of dust. Further, by making the cutting line 11 ′ of the release paper 32 coincide with any one of the cutting lines 11 of the tape substrate 10, the adhesive tape 1 including the release paper from the matching cutting lines 11, 11 ′ can be obtained. It can be easily cut by hand.

  The pressure-sensitive adhesive tape of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

It is a side view including the partial expanded section which shows the outline | summary of the manufacturing apparatus which enforces the method of this invention. 1 is a side view in another manufacturing process of the apparatus. It is a perspective view which shows the outline | summary of the adhesive tape which concerns on this invention. (A) is the partial side view of the adhesive tape of FIG. 2, (B) is the side view at the time of release paper peeling, (C) is the side view of a use condition. It is a side view including the partial expanded section which shows the outline | summary of the manufacturing apparatus which implements another method of this invention. 5 is a perspective view showing an outline of the adhesive tape manufactured by the apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive tape 2 Adhering surface 10 Tape base material 11, 11 'Cutting line 31 1st release paper 32 2nd release paper 40 Adhesive 41 1st adhesive layer 42 2nd adhesive layer 50, 50' Cutting line forming means 51, 54 Perforated blade roller A Processing step B, C Coating process P1, P2 Processing position Pa, Pb Arrangement pitch

Claims (10)

  The process of forming cutting lines for manual cutting in the width direction at multiple locations in the longitudinal direction of a long tape base material, and the adhesive applied to the release paper to the tape base material on which the cutting lines are formed are transferred. A pressure-sensitive adhesive tape manufacturing method, comprising: a coating step.   The tape base material is continuously conveyed in the longitudinal direction to form the cutting lines one by one at a predetermined processing position, and the release paper is adhered to the tape base material from a predetermined coating position after the processing position. The method for producing a pressure-sensitive adhesive tape according to claim 1, wherein agent transfer is started.   A first coating step of transferring a first pressure-sensitive adhesive applied to a long first release paper on one side of the tape base material and winding the tape base material together with the first release paper; The second adhesive applied to the second release paper that is long on the other side while the tape substrate wound up in the first coating step is rewound and the first release paper is peeled and collected. The method for producing a pressure-sensitive adhesive tape according to claim 1, further comprising a second coating step of transferring the agent and winding the tape base material together with the second release paper.   The adhesive tape manufacturing method according to claim 3, wherein a step of forming a cutting line for manual cutting in the width direction is added to the second release paper in the second coating step.   In a double-sided tape type adhesive tape that has one adhesive layer on one side of a long tape substrate and two adhesive layers and release paper on the other side, a constant pitch in the longitudinal direction only on the tape substrate A pressure-sensitive adhesive tape, wherein a plurality of manual cutting lines are formed in the width direction.   The pressure-sensitive adhesive tape according to claim 5, wherein the tape base material is a foamed tape.   The pressure-sensitive adhesive tape according to claim 5 or 6, wherein cutting lines for manual cutting are formed in the width direction at a plurality of locations in the longitudinal direction on both the tape substrate and the release paper.   The pressure-sensitive adhesive according to claim 7, wherein the arrangement pitch of the cutting lines of the tape base material in the longitudinal direction of the tape base material and the arrangement pitch of the cutting lines of the release paper in the longitudinal direction of the release paper are made different. tape.   The pressure-sensitive adhesive tape according to claim 7, wherein the release paper longitudinal direction arrangement pitch of the release lines of the release paper is set to an integral multiple of the tape base material longitudinal direction arrangement pitch of the cutting lines of the tape base material.   The pressure-sensitive adhesive tape according to any one of claims 5 to 9, wherein a tape substrate longitudinal direction arrangement pitch of cutting lines of the tape substrate is set to 5 mm to 20 mm.

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