JP2000297258A - Long sheet with adhesive tape, and apparatus for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus of simple structure for producing a long sheet provided with adhesive tapes, having adhesive sections along the edges of the sheet base. SOLUTION: This apparatus for producing a long sheet with adhesive tapes is equipped with a supply roll 2 for supplying a sheet base 50, a driving roll 4 for letting out the sheet base 50, a winding core supporting means 20 which rotatively supports a winding core 52 on which the sheet base let out is wound, and a supply roll 30 for supplying two adhesive tapes 54, 54, wherein the driving roll 4 is pressed by the winding core 52 by its own gravity in such a way that the adhesive surface of each of the adhesive tapes 54, 54 is come into contact with the sheet base 50 and a releasing surface inside of the wound sheet base 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long sheet with an adhesive tape formed by sticking an adhesive tape along both side edges of a long sheet base made of kraft paper or the like, and an apparatus for manufacturing the same. TECHNICAL FIELD The present invention relates to a long sheet with an adhesive tape useful for winding around wood such as wood, and an apparatus for producing the same.

[0002]

2. Description of the Related Art In a sawmill or a new construction site,
The wrapping paper is wrapped around the wood and pillars so that they do not adhere to the wood or pillars and cause sunburn.

Conventionally, as such a wrapping paper, an adhesive tape having an inner surface as an adhesive surface and an outer surface as a peeling surface is pasted on one side edge of the long wrapping paper so that a part of the adhesive surface is exposed. There is known a wrapping paper with an adhesive tape which is adhered and wound so that the exposed adhesive surface is adhered to the peeling surface of the adhesive tape located inside the adhesive tape.

In Japanese Utility Model Publication No. 5-31164,
Adhesive tape is stuck to one side edge of the long wrapping paper as described above, and a length formed by winding the side edge opposite to the adhesive tape side in a folded state to equalize the thickness on the adhesive tape side. A wrap-around wrapping paper is described.

[0005] In these wrapping papers, the exposed adhesive surface of the adhesive tape is adhered to the peeled surface inside the wound state.
No dust or the like adheres to the adhesive surface, and the adhesive surface can be easily peeled off from the peeling surface during use, so that the device is easy to use.

[0006]

However, in a wrapping paper in which an adhesive tape is adhered only to one side edge, an edge on the side where the adhesive tape is adhered and an edge on the side where the adhesive tape is not adhered. Since the thickness differs between the parts, there are the following problems. That is, the wound wrapping paper is initially substantially columnar, but the difference in radius between the two sides gradually increases due to the difference in the thickness of both side edges, so that the shape gradually becomes a truncated cone. For this reason, as the wrapping paper is wound, the position of the adhesive surface of the adhesive tape gradually shifts in the axial direction with respect to the position of the peeling surface of the adhesive tape located inside,
It was difficult to wind the wrapping paper while accurately adhering the adhesive surface of the adhesive tape to the inner release surface.

Further, in the configuration in which the edge opposite to the adhesive tape is folded, the difference in thickness between the two edges is reduced by the folded wrapping paper, but the thickness differs between the adhesive tape and the wrapping paper. There still exists a difference in thickness. Since the wrapping paper to be wound usually has a length of about 40 to 50 m and is repeatedly wound, the difference in thickness gradually accumulates, and the above-described problem still arises.

The present invention has been made to solve the above-mentioned conventional problems, and is an adhesive tape which can be easily manufactured while accurately bonding the adhesive surface of the adhesive tape to the peeling surface inside the wound state. The purpose is to provide an attached long sheet. Also,
Another object of the present invention is to provide an apparatus for manufacturing a long sheet with an adhesive tape, which can manufacture the long sheet with an adhesive tape with a simple configuration.

[0009]

The object of the present invention is to provide a long sheet with a pressure-sensitive adhesive tape obtained by sticking two pressure-sensitive adhesive tapes along both side edges of a long sheet base material,
The pressure-sensitive adhesive tape has a front surface as an adhesive surface and a back surface as a release surface, and a part of the adhesive surface in at least one of the pressure-sensitive adhesive tapes is exposed to the side of the sheet substrate, and the exposed adhesive is This is achieved by a long sheet with an adhesive tape obtained by winding the sheet base material around a core so that the surface adheres to the release surface located inside the sheet.

[0010] Another object of the present invention is an apparatus for producing a long sheet with an adhesive tape, which is formed by winding a long sheet base material having an adhesive tape adhered along both side edges around a core. A sheet base supply roll that supports the sheet base so as to be able to be fed, a drive roll that feeds the sheet base from the sheet base supply roll, and a core around which the fed sheet base is wound. A winding core supporting means for freely supporting, and an adhesive tape supply roll for feeding out two adhesive tapes each having an adhesive surface on a front surface and a peeling surface on a back surface, wherein the winding core comprises the drive In order to rotate under rolling contact with the roll, and to press the drive roll by its own weight, it is supported by the core supporting means, and the adhesive tape is before being wound around the core. The side edges of the sheet substrate to expose a portion of at least one of the adhesive surfaces on the side of the sheet substrate,
And, while the exposed adhesive surface is adhered so as to be inside the winding state, the exposed adhesive surface is adhered to the peeling surface of the adhesive tape located on the inner side, and the sheet base of the adhesive tape and The adhesion to the peeling surface is achieved by an apparatus for manufacturing a long sheet with an adhesive tape, wherein the core is pressed against the drive roll by its own weight.

It is preferable that the manufacturing apparatus includes a weight which is detachably provided on the core and increases a weight of the core.

More preferably, the weight comprises a mandrel inserted through the core, and the core supporting means cooperates with a support base for supporting the mandrel up and down and the drive roll. A device for producing a long sheet with an adhesive tape is provided as a device provided with a support roll for supporting the core under rolling contact.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A specific embodiment of the present invention will be described. 9 and 1
0 is a perspective view showing two embodiments of the long sheet with an adhesive tape according to the present invention. The long sheet 40 with an adhesive tape is formed by applying two adhesive tapes 54, 54 having a front surface as an adhesive surface and a back surface as a release surface by a peeling process along both side edges of the long sheet base material 50. It is wound around a core 52.

A long sheet 40 with an adhesive tape shown in FIG.
Means that the two adhesive tapes 54, 54 are
4a are adhered so as to be exposed on the sides of the sheet substrate 50, respectively.
54a are peeling surfaces 54b, 54 located inside the wound state.
b. That is, the long sheet 40
Adhesive portions are formed on both side edges of the.

In the long sheet 40 with an adhesive tape shown in FIG. 10, one adhesive tape 54 is attached while exposing a part of the adhesive surface as described above, while the other adhesive tape is attached. 54 does not expose the adhesive surface, and
It is stuck so that the peeling surface 54b is inside the wound state. That is, the adhesive portion is formed only on one side edge of the long sheet 40.

As described above, the long sheet 40 with an adhesive tape according to the present invention allows the adhesive tapes 54, 54 to be bonded to the sheet base 50 regardless of whether the adhesive portion is formed on both side edges or only one side edge. Are attached to both side edges, respectively, so that the thickness of the long sheet 40 with the adhesive tape can be made the same at both side edges. Therefore, the long sheet 40 is prevented from shifting in the width direction during the winding process, and the exposed adhesive surface of the adhesive tape 54 can be easily accurately adhered to the inner peeling surface.

Next, the above-described long sheet 4 with an adhesive tape is used.
The manufacturing apparatus No. 0 will be described. FIG. 1 is a schematic front view showing an apparatus for producing a long sheet with an adhesive tape according to the present invention, and FIG. 2 is a side view in the direction of arrow A in FIG. The long sheet manufacturing apparatus 1 with an adhesive tape according to the present invention includes a sheet base supply roll 2 that supports a long sheet base 50 such as kraft paper so as to be able to be fed out, and the sheet base supply roll 2.
Roll 4 for feeding the sheet base material 50 from the roll, and a core supporting means 2 for rotatably supporting a core 52 around which the sheet base material 50 fed by the drive roll 4 is wound.
0, and adhesive tape supply rolls 30, 30 that support the two adhesive tapes 54, 54 so as to be able to pay out, respectively, as main components. In addition, between the sheet base supply roll 2 and the drive roll 4, there are an induction roll 6 for guiding the sheet base 50, and a press roll 8 that makes rolling contact with the drive roll 4 and applies tension to the sheet base 50. Is provided. Furthermore, adhesive tape supply roll 3
A guide bar 10 that guides the directions of the adhesive tapes 54 that are fed toward the drive roll 4 is provided between the drive rolls 0 and 30.

The drive roll 4 includes a drive motor (not shown)
, And is provided with a tachometer (not shown) so that a desired rotation speed can be maintained by control means (not shown).

The core supporting means 20 comprises a mandrel 21 into which a core 52 is inserted, and a support base 22 having support rods 25, 25 for supporting the mandrel 21 vertically and rotatably in a horizontal state. , 22 and a supporting roll 23 provided in parallel with the driving roll 4. The core supporting means 20 includes a drive roll 4 below the core 52.
The roller 52 is in rolling contact with the support roll 23 and supports the core 52 so that the core 52 presses the drive roll 4 by its own weight at the pressing position P. Here, the mandrel 21 also plays a role as a weight for increasing the own weight of the winding core 52, and the mandrel 21 increases the pressing force of the drive roll 4. In the present embodiment, not only the drive roll 4 but also the support roll 23 are driven by a drive motor (not shown), and are controlled by the control means so that both rotate in synchronization.

Two adhesive tape supply rolls 30, 30
Are supported so as to be rotatable around the bar 32 by support plates 31 and 31, respectively, and the support plates 31 and 31 can be fixed at desired angular positions by clamp screws 33 and 33, respectively. The support plates 31, 31
Is provided with a pressing plate (not shown) that comes into contact with the upper portions of the wound adhesive tapes 54, 54 so that the adhesive tapes 54, 54 cannot be unraveled from the upper portions.

The adhesive tapes 54, 54 have an adhesive surface formed on the front surface side and a release surface formed on the back surface by peeling, and are wound around the adhesive tape supply rolls 30, 30 with the adhesive surface inside. Has been turned.

Next, the operation of the long sheet manufacturing apparatus 1 with the adhesive tape will be described. When manufacturing a long sheet 40 with an adhesive tape of the type shown in FIG. 9, first, as shown in FIG. 2, the adhesive tape supply rolls 30 are fixed so that both are located below the bar 32.

Next, the sheet base supply roll 2 is fed out, inserted between the drive roll 4 and the press roll 8 via the guide roll 6, and the leading end thereof is appropriately bonded to the core 52 with an adhesive tape or the like. Is wound around the core 52 once. Next, the adhesive tapes 54 are fed out through the guide bar 10 to the vicinity of the pressing position P such that the adhesive surface faces the core 52, and both side edges of the sheet base 50 wound around the core 52. Adhere each adhesive surface to the part. At this time, as shown in the enlarged plan view of FIG. 3A, about half of the adhesive surfaces 54a, 54a of both the adhesive tapes 54, 54 are
It is made to be exposed to the side of the sheet substrate 50.

The driving roll 4 and the supporting roll 23
Is driven, the core 52 comes into rolling contact with the drive roll 4 and the support roll 23, and rotates in the direction indicated by the arrow. Thereby, the sheet base material 50 is wound around the core 52,
Along with this, the adhesive tapes 54, 54 are wound with the adhesive surface inside. At this time, since the drive roll 4 is pressed by the weight of the mandrel 21 and the core 52, the adhesive tapes 54, 54 are securely adhered to the sheet base 50 in the process of passing the pressing position P.

Next, when the adhesive tapes 54, 54 are wound one turn around the core 52 while adhering to the sheet base 50, as shown in FIG. The peeling surface 5 of the adhesive tapes 54, 54 adhered to the wound sheet base material 50
4b, 54b appear, and the exposed adhesive surfaces 54a, 54a of the adhesive tapes 54, 54 are peelably bonded to the peeling surfaces 54b, 54b. The sheet base 50 is attached to the core 52.
As the adhesive tape 54 is wound, the radius of the wound sheet increases, and the core 52 gradually moves upward.

After the predetermined length of the sheet substrate 50 is wound around the core 52, the sheet substrate 50 and the adhesive tape 54 are cut as appropriate. Then, the mandrel 21 is connected to the support rod 2.
After removing from 5, 25, pull out from core 52,
A long sheet with an adhesive tape having adhesive portions on both side edges shown in FIG. 9 is completed.

On the other hand, when manufacturing a long sheet 40 with an adhesive tape of the type shown in FIG. 10, first, as shown in FIGS. 4 and 5, two adhesive tape supply rolls 30, 30 are supported. One of the supporting plates 31 is rotated by 90 ° toward the winding core 52 and fixed.

Then, after the sheet base material 50 is unwound from the sheet base supply roll 2 as described above and wound around the winding core 52 by one turn, the adhesive tapes 54 and 54 are attached to the guide bar 10.
To the vicinity of the pressing position P. At this time, the adhesive surface of the adhesive tape 54 drawn out from the rotated adhesive tape supply roll 30 (on the left side in FIG. 5) faces the drive roll 4, while the other adhesive tape supply roll (on the right side in FIG. 5). The adhesive surface of the adhesive tape 54 drawn out from 30 is
Turn to the core 52 side. Then, as shown in the enlarged plan view of FIG. 6A, the front end of the adhesive tape 54 is exposed so that the peeling surface 54 b is on the inside and the adhesive surface is exposed to the side of the sheet substrate 50. So that the sheet base material 5
0 to one edge. On the other hand, the latter end portion of the adhesive tape 54 is bonded such that about half of the bonding surface is exposed to the side of the sheet substrate 50 as described above.

Then, the driving roll 4 and the supporting roll 23
When one of the adhesive tapes 54, 54 passes through the pressing position P, one of the adhesive tapes 54 forms a part of the adhesive surface on the surface side of the sheet substrate 50 wound around the core 52. As shown in FIG. 6B, the other adhesive tape 54 is adhered to the back side of the sheet base 50 without exposing the adhesive surface. Thus, a long sheet with an adhesive tape having an adhesive portion on only one side shown in FIG. 10 is manufactured.

As described above, according to the long sheet manufacturing apparatus 1 with the pressure-sensitive adhesive tape according to the present invention, regardless of whether the adhesive portion of the long sheet is provided on both side edges or only on one side edge, Since the adhesive tapes 54 and 54 are adhered to both side edges of 50, the thickness of the long sheet wound around the core 52 can be made uniform on both sides.
Therefore, the adhesive surface of the adhesive tape 54 can be accurately adhered to the peeling surface of the adhesive tape 54 located inside.

The self-weight of the core 52 and the mandrel 51 inserted into the core 52 causes the adhesive tape 54,
Since the pressure-sensitive adhesive tape 54 is pressed, the pressure-sensitive adhesive tapes 54, 54 can be
Can be adhered to. Therefore, the structure of the device is simplified, and the cost can be reduced.

When the core 52 is pressed by its own weight, the sheet base 50, the adhesive tape 54,
The pressing force can always be maintained at a certain level or more irrespective of the thickness, material, and the like of the 54, so that the adhesive tapes 54, 54 can be securely bonded. Further, as the amount of the wound sheet base material 50 increases, not only the self-weight of the core 52 but also the self-weight of the sheet
Since the pressures 4, 54 are pressed, the pressing force gradually increases, so that the adhesive tape 54 can be more securely adhered to the sheet substrate 50 and the release surface.

Although the specific embodiments of the present invention have been described above, it goes without saying that the present invention is not limited to the above embodiments. For example, when manufacturing a long sheet having an adhesive portion only on one side edge, in this embodiment, one adhesive tape 54 that does not expose the adhesive surface is adhered to the back surface side of the sheet base material 50, and the adhesive portion is formed. Although it is clear which edge is located, an adhesive tape 54 that does not expose the adhesive surface may be adhered to the front side of the sheet substrate 50.

In the present embodiment, the mandrel 21 inserted into the core 52 is supported by the support rods 25, 25. However, instead of providing the mandrel 21, the mandrel 21 is attached to the core 52. It is also possible to insert a suitable weight to directly support the core 52. When the core 52 is sufficiently heavy, a weight inserted into the core 52 is unnecessary.

When a sufficient pressing force can be applied to the drive roll 4 by the weight of the core 52 (and the weight inserted into the core 52, if necessary), the support base 22, The core 22 and the support rods 25 are not necessarily required, and the core 52 can be supported only by the drive roll 4 and the support roll 23.

As shown in FIG. 7, the support rods 25 can support the mandrel 21 so that the winding core 52 can move up and down vertically above the drive roll 4. Yes, in this case, the support roll 23 becomes unnecessary.

As shown in FIG. 8, the winding core 52 can be supported by the support wall 70 and the driving roll 4 having smooth surfaces.

In this embodiment, the driving roll 4
And the support roll 23 is driven, but only the drive roll 4 may be driven.

It is also possible to directly supply the sheet base 50 from the sheet base supply roll 2 to the drive roll 4 without providing the guide roll 6 and the press roll 8.

The sheet substrate 50 may be made of non-woven fabric, polyester film or the like, other than kraft paper.

[0041]

According to the long sheet with an adhesive tape according to the present invention, even when the long sheet is repeatedly wound around the core, the long sheet does not shift in the width direction, and the adhesive surface of the adhesive tape is removed. The adhesive tape can be accurately and easily adhered to the peeling surface of the adhesive tape located inside.

According to the apparatus for manufacturing a long sheet with an adhesive tape according to the present invention, the structure can be made simple and inexpensive, and the adhesive surface of the adhesive tape can be positioned on the sheet substrate and inside. Can be securely bonded to the peeling surface to be formed.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an embodiment of a long sheet manufacturing apparatus with an adhesive tape according to the present invention.

FIG. 2 is a side view in the direction of arrow A in FIG.

FIG. 3 is an enlarged plan view at a pressing position of the adhesive tape.

FIG. 4 is a schematic front view showing another operation state of the long sheet manufacturing apparatus with an adhesive tape shown in FIG. 1;

FIG. 5 is a side view in the direction of arrow A in FIG. 4;

FIG. 6 is an enlarged plan view at a pressing position of the adhesive tape.

FIG. 7 is a front view of a main part showing another embodiment of the long sheet manufacturing apparatus with an adhesive tape according to the present invention.

FIG. 8 is a front view of a main part showing another embodiment of the long sheet manufacturing apparatus with an adhesive tape according to the present invention.

FIG. 9 is a perspective view showing one embodiment of a long sheet with an adhesive tape according to the present invention.

FIG. 10 is a perspective view showing another embodiment of the long sheet with an adhesive tape according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 long sheet manufacturing apparatus with adhesive tape 2 sheet base supply roll 4 drive roll 20 core support means 21 mandrel 22 support base 23 support roll 30 adhesive tape supply roll 40 long sheet with adhesive tape 50 sheet base 52 core 54 adhesive tape 54a adhesive surface 54b release surface

Claims (4)

[Claims] 1. A long sheet with an adhesive tape obtained by sticking two adhesive tapes along both side edges of a long sheet base material, wherein the adhesive tape has a surface as an adhesive surface and A back surface is used as a release surface, and a part of the adhesive surface of at least one of the adhesive tapes is exposed to the side of the sheet substrate, and the exposed adhesive surface is located inside the release surface. A long sheet with an adhesive tape formed by winding the sheet base material around a core so as to adhere to the core. 2. An apparatus for producing a long sheet with an adhesive tape, comprising: winding a long sheet substrate on which an adhesive tape is adhered along both side edges around a core, wherein the sheet substrate can be fed out. A sheet base supply roll for supporting the sheet base, a drive roll for feeding the sheet base from the sheet base supply roll, and a core supporting means for rotatably supporting a core around which the fed sheet base is wound. An adhesive tape supply roll that supports two adhesive tapes, each having an adhesive surface and a peeling surface on the back surface, so as to be able to pay out, and the core rotates under rolling contact with the drive roll. As such, and to press the drive roll by its own weight, is supported by the core supporting means, the adhesive tape, on both side edges of the sheet base material wound around the core, At least a part of the adhesive surface is exposed to the side of the sheet substrate, and the exposed adhesive surface is adhered so as to be in a wound state, and the exposed adhesive surface is located inside the wound state. The adhesive tape is adhered to a peeling surface, and the adhesive tape is adhered to the sheet base and the peeling surface by pressure against the drive roll due to its own weight of the core. Equipment for manufacturing long sheets. 3. The apparatus for producing a long sheet with an adhesive tape according to claim 2, further comprising a weight that is detachably provided on the core and increases a weight of the core. 4. The weight is composed of a mandrel inserted through the core, and the core supporting means is in rolling contact with a support base for supporting the mandrel up and down in cooperation with the drive roll. The apparatus for producing a long sheet with an adhesive tape according to claim 3, further comprising a support roll below the core.