JP5070761B2 - Release film for adhesive tape - Google Patents

Description

  The present invention relates to a release film for an adhesive tape to which one surface of a double-sided adhesive tape is temporarily attached.

Patent Document 1 discloses an adhesive tape that is affixed to an adherend surface having a three-dimensional curved surface. This adhesive tape and its release paper are belt-shaped, and one end is formed with a circular pin receiving opening into which a positioning pin is inserted, and the other end is an ellipse into which a guide rod is inserted and slid. A shaped rod receiving opening is formed. When affixing the adhesive tape, insert a positioning pin into the pin receiving opening to position one end of the adhesive tape with respect to the adherend surface, and place the adhesive tape on the adherend surface sequentially from one end to the other end. Affix it. When sticking the other end of the adhesive tape, the guide rod is inserted and slid into the rod receiving opening of the other end of the adhesive tape, and the other end of the adhesive tape is guided with respect to the adherend surface. .
JP 2000-160115 A

  The pressure-sensitive adhesive tape and release film of Patent Document 1 are suitable for sequentially sticking a pressure-sensitive adhesive tape from one end to the other end on a three-dimensional curved surface. It is not suitable for affixing to the adherend surface which forms a three-dimensional curved surface from the center to both sides.

  The present invention has been made paying attention to the above-mentioned problems, and the purpose of the present invention is to sequentially stick the adhesive tape from the central part to both side parts on the adherend surface forming a three-dimensional curved surface. It is providing the peeling film for adhesive tapes suitable for.

  The release film for an adhesive tape according to the first embodiment of the present invention is an adhesive tape release film to which one surface of a double-sided adhesive tape is temporarily attached, and the pair of openings and the pair of openings are each of the pair. A positioning portion that is provided on the side close to the center portion of the adhesive tape that is disposed between the openings, and is disposed between the pair of openings in each of the pair of openings, and a positioning portion that contacts the positioning member It is provided in the side far from the center part of the adhesive tape, and comprises a moving part to which a positioning member is moved.

  In the adhesive tape release film according to the second embodiment of the present invention, each of the pair of openings is provided between the positioning portion and the moving portion, and the positioning member is moved from the positioning portion to the moving portion. It has the control part which controls transfer.

  The pressure-sensitive adhesive tape laminate of the third embodiment of the present invention comprises the release film of the first or second embodiment, the pressure-sensitive adhesive tape having one surface temporarily attached to the release film, and the other surface of the pressure-sensitive adhesive tape temporarily. And a protective film attached thereto.

  In the release film for the adhesive tape according to the first embodiment of the present invention, with respect to the release film to which the adhesive tape is attached, the positioning members are brought into contact with the positioning portions of the pair of openings, respectively, and the release film is used as a positioning pin together with the adhesive tape. The adhesive tape is sequentially pasted on the adherend surface that forms a three-dimensional curved surface from the central portion to both side portions. At this time, both side portions of the release film are moved to the center side, but since the positioning member enters the moving portion of the opening, such movement is hardly hindered. As described above, the release film of this embodiment is suitable for sequentially sticking the adhesive tape from its central part to both side parts on the adherend surface forming a three-dimensional curved surface.

  In the adhesive tape release film of the second embodiment of the present invention, the positioning member is unnecessarily moved to the moving part because the restricting part restricts the movement of the positioning member from the positioning part to the moving part. There is little and positioning of the adhesive tape with respect to a to-be-adhered surface is performed reliably.

  In the pressure-sensitive adhesive tape laminate of the third embodiment of the present invention, the same effect as the effect of the pressure-sensitive adhesive tape release film of the first or second embodiment can be obtained by peeling the pressure-sensitive adhesive tape and release film from the protective film. Play.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, a release film for a double-sided adhesive tape for fixing a liquid crystal display panel to a housing of a mobile phone will be described.

  With reference to FIG.1 and FIG.2, in the adhesive tape laminated body, the protective film 10, the adhesive tape 12, and the peeling film 14 are laminated | stacked in order. In this embodiment, the protective film 10 and the release film 14 are formed of a polyethylene terephthalate film, and the adhesive tape 12 is formed of an acrylic adhesive.

  The peeling part 15 of the peeling film 14 laminated | stacked on the adhesive tape 12 and the adhesive tape 12 has comprised the rectangular shape corresponding to the adherend surface of the to-be-adhered body mentioned later. A portion along the center line of these rectangular shapes forms the central portion of the adhesive tape 12 and the release film 14.

  A rectangular opening 16 is formed at the center of the adhesive tape 12. In the peeling portion 15 of the peeling film 14, a circular central opening 18 is formed so as to be overlapped with the opening 16 of the adhesive tape 12 and into which the central positioning pin is fitted at the center line position.

  The holding portions 19 are extended laterally from both side portions of the peeling portion 15, respectively. These holding portions 19 are not stacked on the adhesive tape 12. Each holding portion 19 is formed with an oblong side opening 20 extending from the center side to the side. The central side end portions of these side openings 20 form a positioning portion 22 with which a side positioning pin as a positioning member abuts, and the side side of the side opening 20 is a side positioning pin. Is formed as a moving part 24 to which is moved.

  Referring to FIG. 3A, the adherend surface 26 of the adherend 25 to which the adhesive tape 12 is attached has a cylindrical surface having a predetermined center angle. Note that the adherend surface 26 is not limited to a cylindrical surface, but may be a convex shape as a whole, and may be partially flat. Note that a rectangular hole 27 is formed in the adherend surface 26, and the opening 16 of the adhesive tape 12 corresponds to the hole 27.

  When sticking one surface of the adhesive tape 12 to the adherend surface 26, the center positioning pin 28 and the pair of side positioning pins 30 are arranged at appropriate positions with respect to the adherend 25. The center positioning pin 28 is disposed through the hole 27 of the adherend surface 26. Then, a center positioning pin 28 is fitted into the center opening 18 of the release film 14 so that the adhesive tape 12 faces the adherend surface 26, and each side positioning pin is inserted into each side opening 20 of the release film 14. 30 is inserted. Subsequently, the release film 14 and the adhesive tape 12 are moved to the adherend surface 26 along the center positioning pins 28 and the pair of side positioning pins 30. At this time, each side positioning pin 30 is in contact with the positioning portion 22 at the center side end of each side opening 20, and the adhesive tape 12 is appropriately positioned with respect to the adherend surface 26. Further, the release film 14, that is, the adhesive tape 12 is pressed against the adherend surface 26 by a jig 32 having a shape corresponding to the adherend surface 26, and one surface of the adhesive tape 12 is affixed to the adherend surface 26. At this time, both side portions of the release film 14 are moved to the center side, and the side positioning pins 30 enter the moving portion 24 of the side opening 20. Thereafter, the release film 14 is peeled from the adhesive tape 12 so that the liquid crystal display panel can be attached to the other surface of the adhesive tape 12.

  Therefore, the release film 14 of this embodiment has the following effects.

  When the adhesive film 12 with the adhesive tape 12 is applied to the adherend surface 26 having a three-dimensional curved surface in order from the central part to both side parts, both sides of the release film 14 are applied. Although the side portion is moved toward the center side, the side positioning pin 30 enters the moving portion 24 of the side opening portion 20, and thus such movement is not hindered. As described above, the release film 14 of the present embodiment is suitable for sequentially sticking the adhesive tape 12 from the central portion to both side portions on the adherend surface 26 that forms a three-dimensional curved surface. Yes.

  FIG. 4 shows a second embodiment of the present invention. Components having the same functions as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The release film 14 of this embodiment is made of paper. In the side opening 20, a positioning part 22 is formed by a circular opening, and a moving part 24 is formed by a slit extending from the circular opening to the side. For this reason, on the side of the circular opening, a restricting portion 34 that restricts the movement of the side positioning pin 30 from the positioning portion 22 to the moving portion 24 is formed.

  When the release film 14 and the adhesive tape 12 are moved along the lateral positioning pins 30 to the adherend surface 26, the lateral positioning pins 30 are fitted into the positioning portions 22 that are circular openings, Since it is difficult to shift to the moving part 24 due to the restriction by the restriction part 34, the adhesive tape 12 is reliably positioned with respect to the adherend surface 26. When the adhesive tape 12 is pressed against the adherend surface 26 and attached, both side portions of the release film 14 are moved to the center side, and the side positioning pins 30 are moved to the slit-like moving portion 24. The peripheral portion of 24 is pushed in while being deformed.

Therefore, the release film 14 of this embodiment has the following effects.
In the release film 14 of the present embodiment, since the movement of the side positioning pins 30 from the positioning unit 22 to the moving unit 24 is regulated by the regulating unit 34, the side positioning pins 30 unnecessarily migrate to the moving unit 24. Therefore, the adhesive tape 12 is reliably positioned with respect to the adherend surface 26.

  FIG. 5 shows a modification of the second embodiment of the present invention. In this modification, the moving part 24 is formed by a narrow groove-like opening extending from the circular opening to the side. Also in this modification, the restricting portion 34 is formed on the side of the circular opening.

  In this embodiment, the release film for the double-sided adhesive tape for fixing the liquid crystal display panel to the housing of the mobile phone has been described. However, the present invention applies the adhesive tape from the central part to the both side parts in order. The present invention can be applied to any adherend having an adherend surface that forms a three-dimensional curved surface.

The top view which shows the adhesive tape laminated body of 1st Embodiment of this invention. Sectional drawing which cuts and shows the adhesive tape laminated body of 1st Embodiment of this invention along the II-II line of FIG. Sectional drawing which shows the work start time for demonstrating the sticking operation | work of the adhesive tape to the to-be-adhered body by the peeling film of 1st Embodiment of this invention. Sectional drawing which shows the time of completion | finish of operation | work for demonstrating the sticking operation | work of the adhesive tape to the to-be-adhered body by the peeling film of 1st Embodiment of this invention. The top view which shows the holding | maintenance part of the peeling film of 2nd Embodiment of this invention. The top view which shows the holding | maintenance part of the peeling film of the modification of 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 12 ... Adhesive tape, 14 ... Release film, 20 ... Opening part, 22 ... Positioning part, 24 ... Moving part, 30 ... Positioning pin

Claims (3)

It is a release film for an adhesive tape to which one side of a double-sided adhesive tape is temporarily attached,
A peeling portion superimposed on the adhesive tape;
A pair of holding portions that extend outward from the side of the peeling portion and do not overlap the adhesive tape; and
A pair of openings formed in the holding portion;
The a, the opening portion includes the positioning portion provided on a side closer to the side of the stripping section, and away slit or grooved moving portion extend from the positioning unit toward the outside, the A release film for an adhesive tape, wherein the peripheral part of the moving part is deformed by inserting a positioning member . The positioning portion is a circular opening, the adhesive tape is engaged with the positioning member when it is positioned on the adherend surface, said peripheral portion of said slit or groove-shaped moving portion, the adhesive tape is the The release film for an adhesive tape according to claim 1, wherein the positioning member is moved by being deformed by insertion of the positioning member when being attached to an adherend surface. The release film according to claim 1 or 2,
An adhesive tape whose one surface is temporarily affixed to the release film;
A protective film on which the other surface of the adhesive tape is temporarily attached;
A pressure-sensitive adhesive tape laminate comprising:

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