JP5024444B2 - Winding body - Google Patents

Description

The present invention relates to a wound body obtained by winding an adhesive tape formed by cutting a film material coated with an adhesive layer into a narrow tape shape on a reel.

  In recent years, anisotropic conductive films containing conductive fine particles in an adhesive layer formed on a substrate have been widely used for circuit connections such as liquid crystal displays, and this type of anisotropic conductive film is As described in Patent Document 1 and the like, usually, a wound body formed by coating an adhesive layer on a wide film material and then winding it on a reel while cutting it into a narrow tape shape. Manufactured and supplied as

JP 2003-34468 A

  However, as a result of extensive investigations by the present inventors, in manufacturing an anisotropic conductive film, the film material on which the adhesive layer is coated and formed is wound around a reel while being cut into a narrow width. In terms of form, we have found that there are still issues to be improved. That is, it has been found that when the adhesive forming the adhesive layer adheres to the inner surface of the reel during winding or storage on the reel, this causes a product defect. .

  The present invention has been made on the basis of the above-described studies by the present inventors, and is a wound body obtained by winding a film material on which an adhesive layer is coated and wound on a reel while cutting it into a narrow width. As an adhesive film (tape) such as an anisotropic conductive film is manufactured and supplied, the adhesive forming the adhesive layer is prevented from adhering to the inner surface of the reel, and the yield is improved. And it aims at provision of the winding body which can ensure the stability of the operation | work at the time of unwinding and using the said adhesive tape.

A winding body according to the present invention that solves the above problems includes a cylindrical winding portion and a pair of side plate portions that are attached so as to face each other with the winding portion interposed therebetween, and an inner surface of each side plate portion. In addition, a convex part extending continuously or intermittently along the radial direction is provided, and a reel provided with a peripheral convex part on the inner side surface along the peripheral part of each side plate part, The film is formed by winding an adhesive tape formed by cutting a film material coated with an adhesive layer into a thin tape. The height of the convex portion is 0.05 to 1.00 mm, and the width is 0.00. 5 to 5.0 mm, the height of the peripheral convex portion is 0.05 to 1.00 mm, the width is 0.5 to 5.0 mm, and the distance between the opposing peripheral convex portions is cut of the adhesive tape The configuration is larger than the width.

Such the rolled according to the present invention having the configuration, the reel having a predetermined shape, made by Tsu collected wound while cutting the adhesive layer has been formed coated film material the tape-like narrow, If the adhesive tape is manufactured and supplied in this way, it is possible to prevent the adhesive forming the adhesive layer from adhering to the inner surface of the reel at the time of manufacturing or winding and storage.

Further, the rolled according to the present invention, the adhesive tape is formed by cutting the anisotropic conductive film formed by incorporating conductive fine particles to the adhesive layer formed on the substrate in tape-like narrow It can be an adhesive tape .
Moreover, although the winding body which concerns on this invention is provided so that the said convex part may extend to radial direction, it is preferable to set it as the structure by which the said convex part is provided radially.
With such a configuration, it is possible to more reliably prevent adhesion of the adhesive or pressure-sensitive adhesive forming the adhesive layer or pressure-sensitive adhesive layer to the inner surface of the reel.

In addition, the wound body according to the present invention can prevent the adhesion of the adhesive or the pressure-sensitive adhesive to the inner surface of the reel more surely without causing problems, and the protrusions extending in the radial direction can be more reliably prevented. It is the height 0.05~1.00mm, the width as 0.5~5.0mm.

Further, the rolled according to the present invention, the inside surface along the periphery of the side plate portions, in a be a structure in which a circumferential protrusion extending in the circumferential direction, which is an object to be winding material adhesion the side of the tape and the guide at the periphery of the side plate portion, when the winding unevenness gradually winds the adhesive tape so as not to cause, by reducing the contact area with the adhesive tape, the adhesive to the peripheral edge portion of the side plate portion Can be prevented.

In addition, when the winding body according to the present invention reduces the contact area with the adhesive tape that is the object to be wound, the side surface of the object to be wound is guided by the peripheral edge portion of the side plate part and wound, It is preferable that at least a portion of the peripheral convex portion that comes into contact with the article to be wound has an arc shape.

Further, the rolled according to the present invention, without a problem, in order to more reliably prevented more reliably attachment of the adhesive or pressure-sensitive adhesive to the peripheral edge portion of the side plate portion, the height of the circumferential protrusion The distance between the opposing peripheral convex portions is set to be 0.05 to 1.00 mm and the width is 0.5 to 20.0 mm so as to be larger than the cutting width of the adhesive tape .

According to the present invention as described above, an adhesive that forms an adhesive layer when the film material coated with an adhesive layer is wound into a reel while being cut into a thin tape shape, or during winding and storage. However, it can be prevented from adhering to the inner side surface of the reel, which can suppress the occurrence of product defects and improve the yield. In particular, in the present invention, the height of the projecting portion extending in the radial direction is 0.05 to 1.00 mm and the width is 0.5 to 5.0 mm. Adherence of the adhesive to the inner surface of the reel can be surely prevented, and a peripheral protrusion is provided on the inner surface along the peripheral edge of each side plate portion. The side surface of the adhesive tape, which is the object to be wound, is set to be 05 to 1.00 mm, the width is 0.5 to 5.0 mm, and the distance between the opposing peripheral convex portions is larger than the cutting width of the adhesive tape. When the adhesive tape is wound up so as not to cause winding unevenness, the contact area with the adhesive tape is reduced to prevent adhesion of the adhesive to the peripheral portion of the side plate portion. be able to.

It is explanatory drawing which shows embodiment of the wound body which concerns on this invention. It is a BB end view of Drawing 1 (b). It is CC end view of FIG.1 (b). It is explanatory drawing which shows the winding-up state of an adhesive tape. It is explanatory drawing which shows notionally arrangement | positioning of the convex part provided in the inner surface of a side-plate part in the modification of the reel in the winding body which concerns on this invention. It is explanatory drawing which shows the outline of the cross-sectional shape of the convex part provided in the inner surface along the peripheral part of the convex part provided in the inner surface of a side plate part or a side plate part in the modification of the reel in the winding body which concerns on this invention. It is explanatory drawing which shows notionally the arrangement | positioning of the peripheral convex part provided in the inner surface along the peripheral part of a side-plate part in the modification of the reel in the winding body which concerns on this invention. It is explanatory drawing which shows notionally arrangement | positioning of the convex part provided in the inner surface along the peripheral part of the convex part provided in the inner surface of a side plate part and the side plate part in the modification of the reel in the winding body which concerns on this invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1A and 1B are explanatory views showing an outline of the wound body according to the present embodiment. FIG. 1A is a front view and FIG. 1B is a cross-sectional view taken along line AA in FIG. .

  As shown in FIG. 1, the wound body according to the present embodiment is formed by winding an adhesive tape 5 as an article to be wound around a reel 1. A reel 1 shown in FIG. 11 includes a cylindrical winding portion 3 and a pair of side plate portions 2 and 2 attached so as to face each other in parallel or substantially in parallel with the winding portion 3 interposed therebetween. ing. Further, a D-hole-shaped shaft hole 4 is provided through substantially the center of the reel 1. By inserting a winding shaft of a winding device (not shown) into the shaft hole 4, the winding is performed. A reel 1 is mounted on the apparatus, and rotates as the take-up shaft is driven.

  The reel 1 having such a configuration is used for manufacturing and supplying various adhesive tapes 5 by winding a film material coated with an adhesive layer while cutting it into a thin tape. The width of the winding part 3, that is, the distance between the side plate parts 2 and 2 separated via the winding part 3, is set as appropriate according to the cutting width of the adhesive tape 5 that is to be wound. can do. The side plate portion 2 is generally formed in a disc shape, but the diameter thereof can be appropriately set according to the winding length of the adhesive tape 5.

  In this embodiment, the reel 1 may be integrally formed by injection molding or the like, but the pair of side plate portions 2 and 2 and the winding portion 3 are formed separately and are fitted together. Alternatively, they may be joined and integrated by appropriate means such as adhesion. If the side plate portions 2 and 2 and the winding portion 3 are separated, for example, the winding portion 3 is used in common, and the side plate portions 2 having different diameters are combined with the side plate portions 2 and 2 to correspond to various winding lengths. Or, by combining the common side plate portion 2 with the winding portion 3 having different widths, it is possible to correspond to various cutting widths.

Moreover, in this embodiment, the convex part 21 extended in radial direction as shown in FIG.1 (b) and FIG. 2 is provided in the inner surface of the side-plate parts 2 and 2. As shown in FIG.
FIG. 2 is an end view showing a BB cross section of FIG.

  The convex portion 21 provided on the inner side surface of the side plate portion 2 has an adhesive layer exposed on the side surface of the adhesive tape 4 when the adhesive tape 5 is wound around the reel 1 or when the adhesive tape 5 is wound and stored. This prevents contact with the inner side surface (inner side surface of the side plate portion 2), thereby preventing the adhesive forming the adhesive layer from adhering to the inner side surface of the reel 1.

That is, the distance between the side plate portions 2 and 2 separated by the winding portion 3 is such that the adhesive tape 5 wound around the winding portion 3 does not come into contact with the inner surface of the side plate portion 2. Depending on the cutting width of the tape 5, it is set with a certain margin, but when the adhesive tape 5 is wound, the winding position of the adhesive tape 5 is biased due to the rotation of the reel 1. If the positional deviation occurs in the adhesive tape 5 taken up due to impact or vibration during winding and storage, the adhesive tape 5 may come into contact with the inner surface of the side plate portion 2.
In the present embodiment, even in such a case, by providing the convex portion 21 on the inner surface of the side plate portion 2, the adhesive layer exposed on the side surface of the adhesive tape 5 and the inner surface of the side plate portion 2. The contact area is reduced to prevent the adhesive forming the adhesive layer from adhering to the inner surface of the reel 1.

In the present embodiment, in providing such a convex portion 21, the height h1 of the convex portion 21 is 0.05 to 1.00 mm, more preferably 0.05 to 0.30 mm, and particularly preferably. Is 0.05-0.20 mm .
If the height h1 of the convex part 21 is less than the said range, the effect which suppresses the contact to the inner surface of the side-plate part 2 of the adhesive tape 5 will become difficult to be acquired. Further, it is not preferable in that the accuracy of condition management when the reel 1 is injection-molded becomes necessary. On the contrary, if the height h1 of the convex portion 21 exceeds the above range, the convex portion 21 becomes higher than necessary, which affects the width dimension of the reel 1. Further, it is not preferable in that the pressure on the side surface of the adhesive tape 5 becomes strong, and there is a possibility that a mark of the convex portion 21 may be attached to the side surface of the adhesive tape 5.

The width w1 of the convex portion 21 is 0.5 to 5.0 mm.
If the width w1 of the convex portion 21 is less than the above range , the side surface of the adhesive tape 5 may be damaged. Further, it is not preferable in that the accuracy of condition management when the reel 1 is injection-molded becomes necessary. On the contrary, if the width w1 of the convex portion 21 exceeds the above range , a problem of adhesion of the adhesive to the convex portion 21 occurs.

  Further, in the present embodiment, as shown in FIG. 1, when a plurality of (eight in the illustrated example) convex portions 21 extending in the radial direction are provided in a radial manner, adhesion that forms an adhesive layer more reliably. It is preferable because the agent can be prevented from adhering to the inner surface of the reel 1.

Moreover, in this embodiment, the peripheral convex part 22 extended in the circumferential direction as shown in FIG.1 (b) and FIG. 3 is provided in the inner surface along the peripheral part of the side-plate part 2. As shown in FIG.
FIG. 3 is an end view showing a CC cross section of FIG.

Here, when winding the adhesive tape 5 cut into a narrow width around the reel 1, the side surface of the adhesive tape 5 is placed on the side plate portion 2 while slightly tilting the adhesive tape 5 as shown in FIG. If it winds in the state guided by the peripheral part, it can wind up so that the side surface of the adhesive tape 5 may be made flush and the winding unevenness may not occur.
FIG. 4 is an explanatory view showing a wound state of the adhesive tape 5. 4B is a left side view of the state shown in FIG. 4A, and the adhesive tape 5 is wound around the reel 1 that rotates in the direction of the arrow in the drawing.

  In the present embodiment, the peripheral convex portion 22 provided on the inner side surface along the peripheral portion of the side plate portion 2 is formed on the side surface of the adhesive tape 5 when the adhesive tape 5 is wound around the reel 1 as described above. This is for preventing the adhesive forming the adhesive layer from adhering to the peripheral portion of the side plate portion 2 when the exposed adhesive layer contacts the peripheral portion of the side plate portion 2.

  That is, in this embodiment, when the side surface of the adhesive tape 5 is guided by the peripheral edge portion of the side plate portion 2, the inner surface along the peripheral portion of the side plate portion 2 is reduced so that the contact area with the adhesive tape 5 is reduced. A peripheral convex portion 22 extending in the circumferential direction is provided to prevent adhesion of the adhesive.

  For this reason, it is preferable that the peripheral convex part 22 has an arc shape at least at a portion that contacts the adhesive tape 5, and the radius of curvature is 0.3 to 0.3 to reduce the contact area with the adhesive tape 5. It is preferable that it is 1.5 mm, More preferably, it is 0.5-1.0 mm.

Moreover, in this embodiment, when providing such a peripheral convex part 22, although the height h2 of the peripheral convex part 22 shall be 0.05-1.00 mm, More preferably, it is 0.05-0.30 mm. And particularly preferably 0.05 to 0.20 mm. In the present embodiment, the height h2 of the peripheral convex portion 22 is in such a range, and the distance between the opposing peripheral convex portions 22 is larger than the cutting width of the adhesive tape 5 as shown in FIG. Increased.
If the height h2 of the peripheral convex part 22 is less than the said range , the effect which suppresses the contact to the inner surface of the side-plate part 2 of the adhesive tape 5 will be impaired. Moreover, when winding up the adhesive tape 5, the convex part 21 and the adhesive tape 5 interfere, and it is unpreferable also at the point that there exists a possibility that the adhesive tape 5 may be damaged. Conversely, if the height h2 of the peripheral convex portion 22 exceeds the above range , the peripheral convex portion 22 becomes unnecessarily high and interferes with the adhesive tape 5 when the adhesive tape 5 is wound. Moreover, since the clearance gap between the adhesive tape 5 after winding up the adhesive tape 5 and the side-plate parts 2 and 2 becomes large, there exists a possibility that the winding shift | offset | difference at the time of storage may arise, and the point that storage stability will fall. But it is not preferable.

The width w2 of the peripheral projection 22 is 0.5 to 5.0 mm.
If the width w2 of the peripheral protrusion 22 is less than the above range , the side surface of the adhesive tape 5 may be damaged. On the contrary, if the width w2 of the peripheral convex portion 22 exceeds the above range , a problem of adhesion of the adhesive to the peripheral convex portion 22 occurs. Further, when the adhesive tape 5 wound around the reel 1 is unwound and used, it is not preferable in that the adhesive tape 5 may be caught on the peripheral convex portion 22.

  Although the present invention has been described with reference to the preferred embodiment, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. .

  In the above-described embodiment, an example of the shaft hole 4 having the D hole shape is illustrated. However, a shape in which a key groove corresponding to a key provided on the winding shaft side may be formed. The specific form of 4 can be changed as appropriate according to the means for mounting the take-up device on the take-up shaft.

  Further, in the above-described embodiment, the form of the winding unit 3 is simply shown, but various forms applicable to this type of reel, such as providing a rib for securing rigidity, can be applied. .

In the above-described embodiment, the convex portion 21 provided on the inner side surface of the side plate portion 2 is provided as a convex strip formed continuously from the inner peripheral side to the outer peripheral side of the reel 1. 21 may be formed intermittently as shown in FIG. Further, the convex portion 21 is provided in a straight line along the direction from the center of the side plate portion 2 to the peripheral edge so as to extend in the radial direction, and as shown in FIG. Also good.
Moreover, when providing the convex part 21 radially, it is preferable that the radiation center corresponds with the center of the side-plate part 2, but it can also be made not to match as needed. Furthermore, for example, as shown in FIG. 5B, the convex portion 21 can be provided so as to expand radially from each of a plurality of different radiation centers.

  Further, the cross-sectional shape of the convex portion 21 is not limited to the arc shape as described above, but may be a rectangular shape or a shape with chamfered corners, or may have a cross-sectional shape as shown in FIG. it can.

  As described above, the specific aspects such as the number and shape of the convex portions 21 provided on the inner surface of the side plate portion 2 are particularly limited as long as adhesion of the adhesive to the inner surface of the reel 1 can be prevented. It is not something.

Similarly, the peripheral convex portion 22 provided on the inner side surface along the peripheral edge portion of the side plate portion 2 is also attached to the adhesive when the side surface of the adhesive tape 5 is guided by the peripheral edge portion of the side plate portion 2 and wound. If this can be prevented, various modifications can be made.
In the embodiment described above, the peripheral convex portion 22 is provided over the entire periphery of the peripheral portion of the side plate portion 2, but for example, intermittently along the peripheral portion of the side plate portion 2 as shown in FIG. It may be provided. Moreover, as shown in FIG.7 (b), it is good also as the shape which curved in the shape of a curve, and as shown in FIG.7 (c), the several peripheral convex part 22 is arranged in parallel (two in the example shown in figure). May be.
Further, as shown in FIGS. 8A to 8C, the peripheral convex portion 22 provided intermittently is replaced with the convex portion 21 provided to prevent the adhesive from adhering to the inner surface of the reel 1. It may be continuous.

  The cross-sectional shape of the peripheral convex portion 22 is also similar to the cross-sectional shape of the convex portion 21 such as an arc shape, a rectangular shape, or a shape whose corners are chamfered, and a cross-sectional shape as shown in FIG. can do.

  Here, FIGS. 5, 7, and 8 are explanatory diagrams conceptually showing the arrangement of the convex portions 21 and 22 in the modified example. Moreover, FIG. 6 is explanatory drawing which shows the outline of the cross-sectional shape of the convex part 21 (or peripheral convex part 22), and FIG.6 (d), (f) is two convex part 21 (or peripheral convex part 22). ) Are arranged side by side, and the examples shown in FIGS. 6E and 6G are arranged side by side in a state where the two convex portions 21 (or peripheral convex portions 22) are in contact with each other.

As described above, the present invention provides a wound body in which an adhesive tape obtained by cutting a film material coated with an adhesive layer into a thin tape is wound on a reel.

DESCRIPTION OF SYMBOLS 1 Reel 2 Side board part 21 Radial direction convex part 22 Periphery convex part 3 Winding part 5 Adhesive tape

Claims (4)

A cylindrical winding part and a pair of side plate parts attached so as to face each other across the winding part, and continuously or intermittently along the radial direction on the inner surface of each side plate part A film material in which an adhesive layer is coated and formed on a reel provided with a peripheral convex portion on an inner surface along the peripheral portion of each side plate portion, as an article to be wound, is provided. Take up the adhesive tape that is cut into a narrow tape,
The height of the convex part is 0.05 to 1.00 mm, the width is 0.5 to 5.0 mm, the height of the peripheral convex part is 0.05 to 1.00 mm, and the width is 0.5 to 5. A wound body, characterized in that the distance between the opposing peripheral convex portions is set to 0 mm, which is larger than the cutting width of the adhesive tape.   The winding according to claim 1, wherein the adhesive tape is obtained by cutting an anisotropic conductive film obtained by containing conductive fine particles in an adhesive layer formed on a base material into a narrow tape shape. Heavy body.   The wound body according to any one of claims 1 to 2, wherein the convex portions are provided radially.   4. Any one of claims 1 to 3, wherein when the side surface of the wound object is guided and wound by the peripheral edge portion of the side plate portion, at least a portion of the peripheral convex portion that contacts the wound object is formed in an arc shape. The winding body as described in any one of Claims.

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