JP2018199746A - Sealing tape - Google Patents

Abstract

The present invention provides a sealing tape that protects an object to be packed and can be easily opened.
A non-adhesive layer 4 of a central band 5 at the center in the width direction of a sealing tape 1 is positioned and adhered to seals 12 at the joints 12 of lid flaps 11 on the left and right sides. When the cardboard case is opened, if the left and right lid flaps 11, 11 are pushed down, the cut lines 6 such as perforations can be easily separated and opened. Even if a part of the packaged item protrudes from the joint 12 of the lid flaps 11 and 11 during the distribution of the cardboard case, the non-adhesive layer can be used as long as it falls within the width of the non-adhesive layer 4 of the central band 5. The sealing tape does not adhere to the packing object only by contacting 4 with the packing object.
[Selection] Figure 3

Description

  The present invention relates to a sealing tape that is attached to a corrugated cardboard case or the like, and particularly to a sealing tape that has a cut line such as a perforation and can easily open the corrugated cardboard case or the like.

  As this type of sealing tape, an adhesive layer is formed on the entire back surface of the substrate. When the cardboard case is sealed with the sealing tape, the sealing tape is peeled off with a nail or cut with a knife such as a cutter. Was.

  In the method of peeling off the sealing tape with the nail, it takes a lot of time to open the seal, which may damage the nail itself. Moreover, there was a possibility of damaging the contents when using the blade.

  Patent Document 1 discloses an adhesive tape having a perforation along the tape length direction in the vicinity of the central portion in the width direction of the adhesive tape. According to this adhesive tape, it can be easily separated by tapping the tape with a hand from above.

  Further, Patent Document 2 discloses a sealing tape configured with a portion with glue on both sides with a portion without glue. By pulling the knob at the other end slightly protruding from the adhesive part of the tape, the central part is not adhered, so that it can be opened easily.

Japanese Utility Model Publication No. 62-83840 Japanese Utility Model Publication No. 51-104900

  However, in Patent Document 1, when an object to be packed in a cardboard case protrudes from the case, it adheres to the sealing tape, and when it is peeled off, the object to be packed may be torn. Further, when the perforation is shifted from the joint of the lid flap of the cardboard case and sealed, the perforated portion attached to the surface of the lid flap may not be cut and the tape may be cut off halfway. Therefore, sealing must be performed so that the perforation and the joints of the left and right lid flaps do not shift at the time of sealing, and careful attention is required for the sealing operation.

  Moreover, in patent document 2, although the tape can be easily peeled by pulling up the knob protruding from the adhesive portion of the tape, it is necessary to form a knob at the end of the tape, and there is an extra material for forming the knob. It is necessary and is not preferable in terms of appearance.

  In view of the above, the present invention can protect an object to be packed without adhering to the sealing tape even when the object to be packed protrudes from a joint of a lid flap such as a cardboard case, and can be easily opened. The purpose is to provide a sealing tape that can be used.

  In order to achieve the above-mentioned object, the present invention includes the left and right adhesive layers provided along the length direction of the tape on the left and right sides of the width direction of the back surface of the base material, A central non-adhesive layer sandwiched between adhesive layers and provided along the length direction of the tape, and the central non-adhesive layer is separated at the central portion along the length direction of the tape An intermittent score line is provided through the substrate.

  As a preferred embodiment thereof, an adhesive layer is provided on the entire back surface of the base material, and a central band having a back surface as a non-adhesive layer is provided in the vicinity of the central portion in the width direction of the adhesive layer. Adhesive layers are formed on both the left and right sides of the central band by being adhered to the back surface of the material, and the substrate and the central band are intermittently separated at the central part along the length direction of the tape at the central part in the width direction. An example in which a cut line to be formed is provided through the base material and the central band.

  When sealing the lid flap of the corrugated cardboard case using the sealing tape of the present invention, the non-adhesive layer at the center in the width direction of the sealing tape is positioned according to the joints of the lid flaps on the left and right sides, and the left and right lid flaps Affix the left and right adhesive layers of the sealing tape to each other and seal. Further, when the cardboard case is opened, if the left and right lid flaps of the cardboard case are pushed down, the cut line such as the perforation can be cut off, and thereby the sealing tape can be broken and the cardboard case can be opened. . When the cardboard case is in circulation, even if a part of the packaged item protrudes from the joint of the lid flap of the cardboard case, if the non-adhesive layer is within the width of the non-adhesive layer (center band), the non-adhesive layer Since it is only in contact with the package, the sealing tape does not adhere to the package. Even if the cut line (perforation) is shifted from the joint of the lid flap and is sealed, the cut line can be broken and opened simply by pressing down the left and right lid flaps at the time of opening.

It is a perspective view which shows the state which wound up the sealing tape which is the 1st Embodiment of this invention in roll shape. It is a cross-sectional view of a sealing tape. It is explanatory drawing which shows sealing and unsealing operation which similarly uses a sealing tape. It is a cross-sectional view of the sealing tape which is the 2nd Embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the sealing tape 1 of the present embodiment is provided with an adhesive layer 3 on the entire back surface of the base material 2, and the back surface is a non-adhesive layer 4 near the central portion in the width direction of the adhesive layer 3. The central band 5 is provided, and the central band 5 is adhered to the back surface of the base material 2, whereby adhesive layers 3 a and 3 b are formed on the left and right sides of the central band 5. 5 is provided with an intermittent cut line 6 (perforation) for separating the tape at the central portion along the length direction of the tape so as to penetrate through the base material 2 and the central belt 5. .

  The substrate 2 is in the form of a sheet or film, for example, polyethylene terephthalate (PET), nylon, cellulose diacetate, polystyrene, polyethylene, polypropylene, polyester, polyimide, polyvinyl chloride, polycarbonate and other plastics, copper, aluminum Such as metal, paper, impregnated paper, etc. can be used alone or in combination. The width of the base material 2 is such that the left and right lid flaps 11 of the cardboard case 10 can be bonded by the left and right adhesive layers 3a and 3b, and the joint between the lid flaps 11 and 11 can be covered by the central band 5. What is necessary is just about 40 mm-70 mm.

  The adhesive layer 3 can use a well-known material used for sealing. Examples thereof include acrylic resins, acrylic ester resins, copolymers thereof, styrene-butadiene copolymers, polyvinyl ethers, silicone resins, and the like. The pressure-sensitive adhesive layer 3 made of these materials is formed by a gravure printing method, a screen printing method, a reverse roll coating method using a gravure plate, or the like using a coating liquid obtained by dissolving or dispersing the above resin material in water or a solvent. Thus, it can be applied to the back surface of the substrate 2 and dried.

  The center belt 5 can be made of various materials as long as the back side is non-adhesive. For example, in this embodiment, interlayer paper is adopted. In order to seal the cardboard case, and in order to form the cut lines 6, those having a width of about 10 to 20 mm are employed.

  An example of the cut line 6 is a perforation. A desired value can be obtained for the breaking strength by adjusting the length ratio between the joining portion and the non-joining portion which are intermittently provided. The cut line 6 extends not only to the base material 2 but also to the central band 5. As shown in FIG. 1, the cut line 6 is formed in advance when the sealing tape 1 is provided in a state of being wound around a roll core. Further, when the sealing tape is applied on the packing line of the article to be packed, the cutting line 6 (perforation) is inserted and sealed with the sewing machine blade immediately before the sealing tape 1 is applied. Thus, the formation timing of the cut line 6 can be variously selected.

  FIG. 3 shows a sealing / opening operation using a sealing tape. When sealing the lid flap of the cardboard case using the sealing tape, as shown in FIG. 3 (a), the lid flaps 11 and 11 on both the left and right sides are closed and matched to the joint of the lid flaps 11 and 11. The non-adhesive layer in the central band 5 at the center in the width direction of the sealing tape 1 is positioned, and the left and right adhesive layers 3a and 3b of the sealing tape 1 are attached to the left and right lid flaps 11 and 11 for sealing (see FIG. b)).

  When the cardboard case 10 is opened, as shown in FIG. 3C, when the left and right lid flaps 11 and 11 of the cardboard case 10 are pushed down by hand, the perforation of the sealing tape 1 or the like is caused by the pushing force. Tensile stress or shearing stress acts on the cut line 6 portion of the wire, and the cut line 6 can be easily broken and separated, whereby the sealing tape 1 can be broken and the cardboard case 10 can be opened (same as above). (Refer figure (d)).

  At this time, even if the cut line 6 (perforation) is shifted from the joint 12 of the lid flaps 11 and 11 and sealed, the portion where the cut line 6 exists is a portion where the non-adhesive layer 4 is located. The adhesive layer 4 is not bonded to the lid flaps 11, 11. When the left and right lid flaps 11, 11 are pushed down at the time of opening, the cut line 6 is broken and can be easily opened.

  Further, when the sealed corrugated cardboard case 10 is distributed, even if a load is applied to the corrugated cardboard case 10 and a part of the packaged item protrudes from the joint 12 of the left and right lid flaps 11, 11, the protruding part Since the non-adhesive layer 4 of the central band 5 is located at the center, the non-adhesive layer 4 only comes into contact with the article to be packed, and the adhesive layers 3a and 3b of the sealing tape 1 do not adhere to the article to be packed. .

  Thus, in this embodiment, even if the packaged item protrudes from the joint 12 of the lid flaps 11 and 11 of the cardboard case 10, the packaged item can be protected without adhering to the sealing tape 1, Moreover, opening can also be performed easily.

  FIG. 4 shows a cross-sectional view of a sealing tape according to the second embodiment of the present invention. In the second embodiment, unlike the first embodiment, the adhesive layers 3a and 3b and the non-adhesive layer 4 are formed on the back surface of the base material without using a central band.

  That is, in the second embodiment, the left and right adhesive layers 3a and 3b provided along the length direction of the tape on the left and right sides of the width direction of the back surface of the base material 2, and the vicinity of the center of the back surface of the base material 2 A central non-adhesive layer 4 sandwiched between the left and right adhesive layers 3a and 3b and provided along the length direction of the tape. The central non-adhesive layer 4 includes a tape length direction. An incision line 6 is formed through the base material 2 so as to be cut off at a central portion along the substrate 2.

  In the above configuration, as in the first embodiment, the material can be reduced because the central band 5 is not provided, but the joining strength can be maintained by adjusting the intermittent length of the cut line 6. .

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that many modifications and changes can be made within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Sealing tape 2 Base material 3 Adhesive layer 3a, 3b Adhesive layer 4 Non-adhesive layer 5 Center belt 6 Cut line (perforation)
10 Cardboard case 11 Lid flap 12 Seam

Claims (3)

  Left and right adhesive layers provided along the length direction of the tape on the left and right sides of the width direction of the back surface of the base material, and the length direction of the tape sandwiched between the left and right adhesive layers near the center of the back surface of the base material A non-adhesive layer in the central portion provided along the center, and the non-adhesive layer in the central portion has an intermittent cut line for separating at the central portion along the length direction of the tape. A sealing tape characterized by being provided through. A pressure-sensitive adhesive layer is provided on the entire back surface of the substrate, a central band is provided near the central portion in the width direction of the pressure-sensitive adhesive layer, and the central band is adhered to the back surface of the substrate. Thus, an adhesive layer is formed on both the left and right sides of the central band, and the base material and the central band in the width direction central part are intermittent cut lines for separating at the central part along the length direction of the tape. A sealing tape characterized by being provided through the central band. When the sealing tape is affixed to the lid flap of the cardboard case using the sealing tape according to claim 1 or 2, the non-adhesive layer at the center in the width direction of the sealing tape is positioned according to the joints of the lid flaps on the left and right sides. In this way, stick the adhesive layers on the left and right sides of the sealing tape to the left and right lid flaps, and when opening the cardboard case, push down the left and right lid flaps at the center of the top surface of the cardboard case to cut off the score line. A method for sealing and opening a cardboard case, wherein the cardboard case is opened by breaking the sealing tape.

Images