JP2008088230A - Double-sided gluing tape and method for pasting double-sided gluing tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the production cost of a double-sided gluing tape by eliminating the generation of waste in the production of the double-sided gluing tape. <P>SOLUTION: A first bending line 5 crossing the longitudinal direction of both releasing layers 2a, 2b is formed at prescribed parts of the releasing layers 2a, 2b, second bending lines 6 crossing the longitudinal direction of both releasing layers 2a, 2b are formed at both sides of the first bending line 5, the part corresponding to the area between both second bending lines 6 of a base film 4 and its surrounding is made to be a non-tacky layer 9 free from adhesive layer 3, the first bending line 5 is bent in the form of mountain fold and the second bending lines 6 are bent in the form of valley fold to bend the tape by 90° in plane view, and a tab 11 is formed by using the part between two second bending lines 6 of the releasing layer 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a double-sided adhesive tape and a method for attaching a double-sided adhesive tape, and more particularly to a double-sided adhesive tape having a predetermined angle in a planar shape and a method for attaching the double-sided adhesive tape.

  Conventionally, for example, in a display device, a light unit for irradiating irradiation light to a display panel, etc., in order to fix a display panel, an optical film, etc. housed in a housing, with a display panel, an optical film, etc. A double-sided adhesive tape that adheres the housing is used. Since the double-sided adhesive tape used for this display device, light unit, etc. is used in a non-display area other than the display area for displaying, L-shaped, U-shaped, and frame-shaped double-sided adhesive tapes are often used. Yes.

  FIG. 6A is a schematic plan view showing a conventional L-shaped double-sided adhesive tape, and FIG. 6B is a schematic plan view showing a conventional U-shaped double-sided adhesive tape. As shown in FIGS. 6 (a) and 6 (b), an L-shaped or U-shaped double-sided adhesive tape 21 as described above is conventionally produced by cutting a large-sized double-sided adhesive tape 21A into a desired shape. It had been.

  However, in the conventional method of producing the L-shaped double-sided adhesive tape 21 as described above, the remainder after cutting out the desired-shaped double-sided adhesive tape 21 in the large-sized double-sided adhesive tape 21A, It was set as the disposal part 21B. For this reason, in the large-sized double-sided adhesive tape 21A, the discarded portion 21B becomes larger, and the discarded portion 21B becomes larger than the portion used as the double-sided adhesive tape 21 such as an L-shape. was there. As a result, a wide part of the large-sized double-sided adhesive tape 21A is wasted, and the material for producing the double-sided adhesive tape 21 increases. The problem was that the cost would increase.

  The present invention has been made in view of these points, and can prevent a waste part from being produced in the production process, whereby a double-sided adhesive tape and a double-sided adhesive that can reduce the cost. It aims at providing the sticking method of a tape.

  In order to achieve the above object, the double-sided adhesive tape according to the present invention is characterized by a long shape in which an adhesive layer is provided on each side of the base film, and a release layer is provided on the surface of each adhesive layer. In the double-faced adhesive tape, at least one of the release layers is formed with a first folding line that intersects the longitudinal direction of the release layer, and on both sides of the first folding curve, A pair of second folding lines intersecting with the longitudinal direction of the release layer is formed, and at least a portion of the base film facing between the second folding curves in the release layer is not provided with the adhesive layer. It is a non-adhesive layer part, and the first folding curve is folded in a mountain and the second folding curve is folded in a valley so that it is bent at a predetermined angle in a planar shape, and Release layer Definitive wherein lies in the tab for peeling from the bonded wear layer said release layer by a portion between both the second folding line is formed.

  According to the double-sided adhesive tape according to the present invention, the first folding curve of the peeling layer in the double-sided adhesive tape is fold-folded and both the second fold curves are valley-folded, whereby a predetermined angle is obtained in the planar shape. It is possible to form a double-sided adhesive tape having a predetermined shape that is bent into two, and to form a tab by a portion between the second folding lines of the release layer. Thereby, the double-sided adhesive tape of the predetermined shape which has a bending part can be easily formed, without taking out a waste part.

  Moreover, it is good for the both-ends edge of the said non-adhesion layer part to each be formed in the position beyond the said 2nd folding curve rather than between the said 2nd folding curves. This makes it possible to reliably prevent the adhesive layers from sticking to each other when the first folding line and both the second folding lines are bent to form a tab, so that the release layer can be made easier. It becomes possible to peel from the adhesive layer.

  Furthermore, the first folding line is orthogonal to the longitudinal direction of the release layer, and the second folding line has a shape of the peeling layer between the second folding line and the first folding line. The first folding line may be line symmetric with respect to the axis of symmetry. Thereby, the tab which is easy to hold | grip can be formed by the part between the said 2nd folding lines in the said peeling layer.

  Furthermore, the sticking method of the double-sided adhesive tape according to the present invention is characterized by a long shape in which an adhesive layer is provided on both surfaces of the base film, and a release layer is provided on the surface of each adhesive layer. In the sticking method of the double-sided sticking tape, a first folding line intersecting with a longitudinal direction of the peeling layer is formed in a predetermined portion of at least one of the peeling layers, A pair of second folding lines intersecting the longitudinal direction of the release layer is formed on both sides, and at least a portion of the base film facing the second folding line in the release layer is the adhesive layer. Using a double-sided adhesive tape that is not provided with a non-adhesive layer portion, the first folding curve is fold-folded, the two second folding curves are valley-folded, and the double-sided adhesive tape is Predetermined in planar shape Forming a tab for peeling the release layer from the adhesive layer by a portion between the second folding lines in the release layer, and pulling the tab in a predetermined direction, It exists in the point which peels a peeling layer from the said adhesion layer.

  According to the method for attaching a double-sided adhesive tape according to the present invention, the first folding curve of the release layer in the double-sided adhesive tape is folded in a mountain and the second folding curve is folded in a valley, thereby forming a planar shape. A double-sided adhesive tape having a predetermined shape bent at a predetermined angle can be formed, and a tab can be formed by a portion between both second folding lines of the release layer. Thereby, the double-sided adhesive tape of the predetermined | prescribed shape which has a bending part can be formed, without taking out a waste part.

  As described above, according to the double-sided adhesive tape and the method for attaching the double-sided adhesive tape according to the present invention, in the step of producing a double-sided adhesive tape having a predetermined shape that is bent at a predetermined angle in a planar shape, The waste part of the double-sided adhesive tape can be eliminated, and thereby the cost of the double-sided adhesive tape can be reduced.

  Moreover, in the process of producing a double-sided adhesive tape, a tab can be formed using the release layer by bending the release layer, so that the tab can be easily formed and the tab is produced. Therefore, the cost of the double-sided adhesive tape can be reduced. Furthermore, the peeling layer can be easily peeled from the adhesive layer by pulling the tab in a predetermined direction.

  Hereinafter, an embodiment of a double-sided adhesive tape according to the present invention will be described with reference to FIGS. 1 to 5. Here, in this embodiment, although demonstrated using a display panel as a to-be-adhered body which adheres a double-sided adhesive tape, it is not limited to this.

  FIG. 1 is a schematic plan view of a double-sided adhesive tape according to this embodiment, and FIG. 2 is a schematic cross-sectional view taken along line AA of the double-sided adhesive tape of FIG.

  As shown in FIGS. 1 and 2, the double-sided adhesive tape 1 according to this embodiment includes a base film 4, an adhesive layer 3 provided on both surfaces of the base film 4, and the surface of each adhesive layer 3. Each having a long release layer 2 (2a, 2b).

  A first folding line 5 that intersects the longitudinal direction of both peeling layers 2 is formed at a predetermined portion in both peeling layers 2, and both sides of the first folding line 5 in both peeling layers 2 are on both sides. A pair of second folding lines 6 intersecting the longitudinal direction of the release layer 2 are formed. The first folding line 5 and the second folding line 6 in the release layers 2a and 2b may be formed by perforation processing or the like. Both the second folding lines 6 are formed so that the shape of the peeling layer 2 between the second folding lines 6 and the first folding line 5 is line symmetric with respect to the first folding line 5 as an axis of symmetry. In the present embodiment, the first folding line 5 is formed at the central portion in the longitudinal direction of both release layers 2 so as to intersect, that is, perpendicular to, the longitudinal direction of both release layers 2. Yes. One of the second folding lines 6 is 45 ° with respect to the longitudinal direction of the two peeling layers 2, and the other second folding curve 6 is with respect to the longitudinal direction of the two peeling layers 2. The second folding line 6 is formed so as to intersect at an angle of 45 ° in the opposite direction. Further, in the present embodiment, both the second folding lines 6 are formed with a predetermined gap from the first folding line 5.

  The part which opposes between the at least 2nd folding lines 6 in the base film 4 is made into the non-adhesion layer part 9 in which the adhesion layer 3 is not arrange | positioned, Thereby, each adhesion layer 3 is elongate. The double-sided adhesive tape 1 is arranged at both end portions excluding the central portion. In the present embodiment, the edge of the non-adhesive layer portion 9 is orthogonal to the longitudinal direction of both release layers 2 at a position beyond both second fold curves 6 rather than between both second fold curves 6. Each is formed to do. Thereby, the non-adhesion layer part 9 is arrange | positioned in the part which opposes between the 2nd folding lines 6 and its vicinity.

  And the cut line 10 is formed in the part which opposes the both ends edge of the non-sticking layer part 9 in the base film 4, respectively.

  As shown in FIG. 3, the double-faced adhesive tape 1 has a first folding line 5 that is folded in a mountain and both second folding lines 6 are folded in a valley so that a predetermined angle ( In this embodiment, it is bent at 90 ° and formed in an L shape. At the same time, the double-sided adhesive tape 1 has an L-shaped double-sided adhesive tab 11 for peeling the release layer 2 from the adhesive layer 3 at the portion between the second folding lines 6 of the release layer 2. The bent portion of the tape 1 is formed so as to protrude. When the first folding line 5 and the two second folding lines 6 are bent in this way, the position corresponding to the area between the second folding lines 6 and the vicinity thereof in the release layer 2 is the non-adhesive layer 9. Therefore, it can prevent that the adhesion layer 3 adheres mutually. That is, the non-adhesive layer portion 9 acts so that the adhesive layer 3 does not adhere to each other when the first folding line 5 and the second folding line 6 of the release layer 2 are bent. ing. At this time, the base film 4 may be bent together with any of the release layers 2.

  Next, one Embodiment of the sticking method of the double-sided adhesive tape 1 in the case of sticking the said double-sided adhesive tape 1 to a display panel is described.

  First, while making each 1st folding line 5 in the both peeling layers 2 of the double-sided adhesive tape 1 into a mountain fold, and making each 2nd folding line 6 into a valley fold, the double-sided adhesive tape 1 is made into L shape. The tab 11 is formed by the portion between the second folding lines 6 in the two release layers 2. At this time, the base film 4 is bent together with one of the release layers 2 and the release layer 2a.

  Subsequently, the tab 11 of the other release layer 2b is gripped, and the other release layer 2b is attached to the double-sided adhesive tape 1 formed by bending in an L shape by pulling in the acute angle direction or the downward direction. After peeling from 3, the sticking layer 3 is stuck to the predetermined position in a display panel. And by grasping the tab 11 of one peeling layer 2a and pulling in the acute angle direction or upward direction of the L-shaped double-sided adhesive tape 1, the one peeling layer 2a is peeled from the sticking layer 3 and pasted. The adhesive layer 3 is exposed, and the display panel to which the double-sided adhesive tape 1 is attached is housed in the housing, whereby the display panel is attached and fixed to the housing. At this time, the base film 4 is pulled together with the one release layer 2 a, and the central portion of the base film 4 is cut through the cutting line 10.

  In addition, in the sticking method of the double-sided adhesive tape 1 of this invention, it is not limited to the said embodiment, While making the 1st folding line 5 of at least any one peeling layer 2 into a mountain fold, both both The double-folding tape 6 may be bent at a predetermined angle in a planar shape by folding the two-fold curve 6 into a valley. For example, first, the other release layer 2b is peeled from the adhesive layer 3, and then the first folding line 5 and the second folding line 6 of the one peeling layer 2a are bent and the base film 4 is bent. Then, the adhesive layer 3 may be attached to a predetermined position of the display panel. Moreover, said other peeling layer 2b is peeled from the adhesion layer 3, and one adhesion layer 3 among each adhesion layers 3 arrange | positioned at the both ends of the double-sided adhesion tape 1 is set to the predetermined | prescribed position of a display panel. After pasting, the first folding line 5 and both second folding lines 6 of one peeling layer 2a are folded and the base film 4 is folded, and the other bonding layer 3 is placed at a predetermined position on the display panel. You may stick to. Moreover, in the sticking process of the double-sided sticking tape 1 as described above, when the other release layer 2b is first peeled off from the sticking layer 3, the first folding line 5 and the two second folds are formed on the other peeling layer 2b. The curve 6 may not be formed.

  According to the present embodiment, the first folding line 5 of the release layer 2 in the double-sided adhesive tape 1 is folded in a mountain and both the second folding lines 6 are folded in a valley so that the plane shape is bent at a predetermined angle. The L-shaped double-sided adhesive tape 1 can be formed, and the tab 11 can be formed by the portion between the second folding lines 6 of the release layer 2. Thereby, the L-shaped double-sided adhesive tape 1 can be formed without taking out a discard part.

  Therefore, in the process of producing the L-shaped double-sided adhesive tape 1, the disposal part of the double-sided adhesive tape 1 can be eliminated, and thereby the cost of the double-sided adhesive tape 1 can be reduced. Moreover, in the process of producing the L-shaped double-sided adhesive tape 1, the release layer 2 is used as a tab 11 for peeling the release layer 2 from the adhesive layer 3 by bending the release layer 2. Therefore, the tab 11 can be easily formed, the cost for manufacturing the tab 11 can be reduced, and the cost of the double-sided adhesive tape 1 can be reduced. Furthermore, the peeling layer 2 can be easily peeled from the sticking layer 3 by pulling the tab 11 in an acute angle direction or upward direction in the L-shaped double-sided sticking tape 1.

  Furthermore, since the cut line 10 is formed in the base film 4, the exposed portion of the base film 4 facing the non-adhesive layer portion 9 is obtained by pulling the central portion of the base film 4 together with the tab 11 of the release layer 3. Can be cut through the tear line 10.

  Next, 2nd Embodiment of the double-sided adhesive tape which concerns on this invention is described using FIG. 4 and FIG. Here, in the second embodiment, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 4 is a schematic plan view of the double-sided adhesive tape 1 according to the second embodiment, and FIG. 5 is a first folding curve in the release layer 2 (2a, 2b) of the double-sided adhesive tape 1 of FIG. It is a typical perspective view which shows the case where 5 and both the 2nd folding lines 6 are bent.

  As shown in FIG. 4, in the double-sided adhesive tape 1 which concerns on this embodiment, it is in two places, the 1/3 part from the one end part in the elongate both peeling layers 2, and the 2/3 part. The first folding lines 5 that intersect at 90 ° with respect to the longitudinal direction of both peeling layers 2 are formed, and the second folding lines 6 are formed on both sides of each first folding line 5 in both peeling layers 2. Each first folding line 5 is formed with a predetermined gap. Both the second folding lines 6 are formed so that the shape of the peeling layer 2 between the second folding lines 6 and the first folding line 5 is line symmetric with respect to the first folding line 5 as an axis of symmetry. Of the second folding curves 6 formed on both sides of each first folding curve 5, one second folding curve 6 is 45 ° with respect to the longitudinal direction of both peeling layers 2, and each of the second folding curves 6 is the other second folding curve 6. The folding line 6 is formed so as to intersect the longitudinal direction of both release layers 2 at an angle of 45 ° in the opposite direction to one second folding line 6.

  The two release layers 2 are formed with two portions between the two second folding lines 6 located on both sides of the first folding lines 5 in the two peeling layers 2. The part which opposes between a pair of 2nd fold curves 6 located on both sides of at least each 1st fold curve 5 in the base film 4 is made into the non-adhesion layer part 9 in which the adhesion layer 3 is not arrange | positioned, This Thus, each of the adhesive layers 3 is arranged at three locations of both end portions and the central portion of the double-sided adhesive tape 1.

  As shown in FIG. 5, the double-sided adhesive tape 1 has a first folded curve 5 that is folded in a mountain and each second folded curve 6 is folded in a valley so that the planar shape is 90 °. It is bent and formed into a U-shape. At the same time, the double-sided adhesive tape 1 has two tabs 11 in the U-shaped double-sided adhesive tape 1 for separating the release layer 2 from the adhesive layer 3 at each central portion 7 of the release layer 2. Each of the bent portions protrudes from each other.

  Since the sticking method of the double-sided adhesive tape 1 which concerns on 2nd Embodiment is the same as that of the double-sided adhesive tape 1 which concerns on 1st Embodiment, description is abbreviate | omitted.

  According to the present embodiment, the first folding line 5 of the release layer 2 in the double-sided adhesive tape 1 is fold-folded and the second folding lines 6 are fold-folded to form a predetermined angle in the planar shape. A U-shaped double-sided adhesive tape 1 that is bent in a straight line can be formed, and a tab 11 can be formed by each central portion 7 of the release layer 2. Thereby, the U-shaped double-sided sticking tape 1 can be formed without taking out a discard part.

  Therefore, in the process of producing the U-shaped double-sided adhesive tape 1, the waste part of the double-sided adhesive tape 1 can be eliminated, and thereby the cost of the double-sided adhesive tape 1 can be reduced. Moreover, in the process of producing the U-shaped double-sided adhesive tape 1, the release layer 2 is used as a tab 11 for peeling the release layer 2 from the adhesive layer 3 by bending the release layer 2. Therefore, the tab 11 can be easily formed, the cost for manufacturing the tab 11 can be reduced, and the cost of the double-sided adhesive tape 1 can be reduced. Furthermore, the peeling layer 2 can be easily peeled from the sticking layer 3 by pulling the tab 11 in an acute angle direction or upward direction in the U-shaped double-sided sticking tape 1.

  In addition, this invention is not limited to the said embodiment, A various change is possible as needed.

  For example, in each of the above embodiments, the first folding line 5 is formed so as to intersect with the longitudinal direction of the two peeling layers 2 at an angle of 90 °, and one of the second folding lines 6 is the second folding line. Curve 6 is 45 ° with respect to the longitudinal direction of both release layers 2, and the other second folding curve 6 is 45 ° with respect to the longitudinal direction of both release layers 2 in the direction opposite to the second folding curve 6. Although formed so as to intersect at an angle, the present invention is not limited to this. By adjusting the crossing angle of the second folding lines 6 with respect to the longitudinal direction of the release layer 2, the double-sided adhesive tape 1 having a desired bending angle can be formed.

  Moreover, in each said embodiment, although both the 2nd folding lines 6 are arrange | positioned with the 1st folding line 5 and the predetermined clearance gap, it is not limited to this, The center part 7 of the peeling layer 2 As long as it can be formed, each one end of both second folding lines 6 may be arranged at the same position as one end of first folding line 5.

  Furthermore, the cut line 10 may not be formed on the base film 4. In this case, the exposed part which opposes the non-adhesion layer part 9 in the base film 4 will remain in the double-sided adhesive tape after adhesion.

Schematic top view which shows one Embodiment of the double-sided adhesive tape which concerns on this invention Typical sectional drawing in AA of the double-sided adhesive tape of FIG. The typical perspective view which shows the case where each folding line of the double-sided adhesive tape of FIG. 1 is bent. Typical top view which shows other embodiment of the double-sided adhesive tape which concerns on this invention The typical perspective view which shows the case where each folding line of the double-sided adhesive tape of FIG. 4 is bent. (A) (b) is a typical top view which shows an example of the conventional double-sided adhesive tape, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Double-sided adhesive tape 2a, 2b Release layer 3 Adhesive layer 5 1st fold curve 6 2nd fold curve 7 Center part 9 Non-adhesion layer part 11 Tab

Claims (4)

In the long double-sided adhesive tape in which the adhesive layer is provided on both surfaces of the base film, and the release layer is provided on the surface of each adhesive layer,
A first folding line that intersects the longitudinal direction of the release layer is formed in a predetermined portion of at least one of the release layers,
A pair of second fold lines intersecting the longitudinal direction of the release layer are formed on both sides of the first fold line,
The portion facing at least between the second folding lines in the base film is a non-adhesive layer portion where the adhesive layer is not provided,
The first folding curve is folded in a mountain and the two second folding curves are folded in a valley so that the plane shape is bent at a predetermined angle and between the two folding curves in the release layer. A double-sided adhesive tape, wherein a tab for peeling the release layer from the adhesive layer is formed by the portion.   2. The double-sided adhesive tape according to claim 1, wherein both end edges of the non-adhesive layer portion are formed at positions exceeding both the second folding lines rather than between both the second folding lines.   The first fold line is orthogonal to the longitudinal direction of the release layer, and the second fold line has a shape of the release layer between the second fold line and the first fold line. The double-sided adhesive tape according to claim 1 or 2, wherein the double-sided adhesive tape is formed so as to be line symmetric with respect to the first folding line as an axis of symmetry. In the attaching method of the long double-sided adhesive tape in which an adhesive layer is provided on both surfaces of the base film and a release layer is provided on the surface of each adhesive layer, respectively.
A first folding line intersecting the longitudinal direction of the peeling layer is formed in a predetermined portion of at least one of the peeling layers, and the longitudinal direction of the peeling layer is formed on both sides of the first folding line. A pair of second folding lines that intersect with each other are formed, and at least a portion of the base film that faces between the second folding curves is a non-adhesive layer portion where the adhesive layer is not provided. Using the wearing tape,
The first folding curve is a mountain fold, both the second folding curves are valley-folded, the double-sided adhesive tape is bent at a predetermined angle in a planar shape, and both the second folds in the release layer A tab for peeling the release layer from the adhesive layer is formed by a portion between curves, and the release layer is peeled from the adhesive layer by pulling the tab in a predetermined direction. How to apply double-sided adhesive tape.

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