JP2000006959A - Film roll and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent such a phenomenon that a terminal end of a rolled film is difficult to peel at the time of initially using a film roll wound around a core and the terminal end of the film attaching to an internal film may break at the time of peeling. SOLUTION: A widthwise center of a terminal end 13 of a roll of a film F is stopped by a roll-stop tape 15, and the film at the terminal end 13 is folded at both sides. When the terminal end 13 is peeled together with the roll-stop tape 15, the terminal end 13 can be easily peeled off and breakage may not occur.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film roll in which a film for wrapping food or other food used for home or business use is wound around a core, and more particularly to a film roll in which the end of the film is stopped. The present invention relates to a film roll stopped by a tape and a manufacturing method thereof.

[0002]

2. Description of the Related Art FIG. 5 is a perspective view showing a film roll 1 of a conventional household wrap film. In this film roll 1, a wrap film F such as polyvinylidene chloride is wound on the surface of a cylindrical core 2 made of cardboard. For example, 1
After the wrap film F having a length of 0 m or 30 m is wound on the outer peripheral surface of the core 2, the wrap film F is cut almost perpendicularly to the winding direction (longitudinal direction) to form the cut edge 3. At a substantially central portion in the width direction of the film roll 1, a winding-stopping tape 5 is stuck over the cutting edge 3 and the outer surface 4 of the film already wound inside the cutting edge 3.

[0003] The anti-winding tape 5 has an adhesive layer formed on the inner surface thereof.
It is attached via an adhesive layer. This winding tape 5
Thereby, rewinding of the cut edge 3 of the wrap film F is prevented. As shown in FIG. 5, the film roll 1 is stored in a paper distribution case in a state where the stopping tape 5 is stuck. When using the wrap film, the cover plate of the distribution case is opened, and the tape 5 for stopping the winding of the film roll 1 in the distribution case is peeled off from the tip 5a on the outer surface 4 side. When the leading end portion 5a of the stopping tape 5 is separated from the film roll 1 as it is, the base end portion 5b of the stopping tape 5
As a result, the cutting edge 3 of the wrap film F is lifted,
This cut edge 3 is peeled off from the film inside.

[0004] The cutting edge 3 of the wrap film F is grasped by hand as it is, pulled out of the distribution case to a desired length, and cut by a cutting member provided in the distribution case. The cut wrap film F is put on a container or the like on which food is placed.

[0005] This type of wrap film is formed of a resin material exhibiting tackiness, or a tackifier is added to the resin material, and the surface thereof is usually slightly tacky. As a result, when a wrap film is placed on a container or the like on which food is placed, the wrap film adheres to the outer surface of the container, and the degree of sealing in the wrap film can be increased.

[0006]

However, such a film roll on which the wrap film F is wound has the following problems when used. (1) Since the cut edge 3 of the film is in close contact with the outer surface of the film inside the roll surface, it is difficult to visually recognize the location of the cut edge 3. Therefore, if the cut edge 3 is sold without the tape 5 attached thereto, it is difficult to know where the cutting edge 3 is located when first used. Also, even if the position of the cutting edge 3 is known, it is difficult to peel off the cutting edge 3 from the film surface with a nail or the like,
Further, during the peeling, the film is torn at the cutting edge 3, and thereafter, the film cannot be peeled cleanly from the roll surface. For the above reasons, the cutting edge 3
In order to peel off the cutting edge 3, it is necessary to peel off the cutting edge 3 together with the winding stop tape 5 using the winding stop tape 5. As described above, since the winding tape 5 is an essential member, the cost of providing the winding tape 5 is high, and the work of attaching the winding tape 5 is required, which increases the number of manufacturing steps. (2) It is difficult to remove the cut edge 3 neatly even if the tape 5 is attached.
The film may be torn at the cutting edge 3. That is, since the cut edge 3 is stuck to the base end 5b of the winding tape 5 at the center, the cutting edge 3 is relatively easily peeled off together with the winding tape 5; In this case, the cut edge 3 is in close contact with the outer peripheral surface of the inner wrap film F and is hardly peeled off. As a result, when peeling off the center of the cutting edge 3 together with the wrapping tape 5, the cutting edge 3
5 is deformed as shown by a broken line 3a in FIG. 5, making it difficult to peel off the wrap film F, and the film is easily torn from the middle of the cutting edge 3.

The present invention has been made to solve the above-mentioned conventional problems, and makes it easy to recognize and peel off the end of the winding of the film, so that the end of the winding can be reliably peeled off without using a winding tape. It is an object of the present invention to provide a film roll and a method for manufacturing the same. Further, the present invention is configured such that when the winding end portion of the film is peeled off together with the winding stopper tape, the winding end portion is easily peeled off on both side portions thereof, so that tearing of the film from the winding end portion can be prevented. It is an object of the present invention to provide a film roll and a method for manufacturing the same.

[0008]

According to the present invention, there is provided a film roll wherein a film is wound around a surface of a core, and a winding end portion of the film is in close contact with an outer surface of the film wound inside the core. The cutting edge of the film is folded at the end of the winding. Alternatively, the present invention provides a film roll in which a film is wound around a surface of a core and stored in a case, and a film drawn from the case is cut by cutting means provided in the case. The terminal portion is in close contact with the outer surface of the film wound inside, and the cut edge of the film is folded at the winding terminal portion.

In the above invention, the cut edge of the film is folded so that the folding line at the end of the winding of the film is inclined from the center in the width direction of the film toward both sides in the width direction and toward the rewinding direction of the film. It is preferred that In addition, a winding-stopping tape may be attached via an adhesive layer over the winding end portion of the film and the outer surface of the film that has been completely wound inside. However, in the present invention, it is not necessary to provide the winding stop tape. The film of the present invention is a film in which a tackifier is added to itself, for example, polyvinylidene chloride, polyvinyl chloride, or the like having tackiness, or polyolefin, polyamide, polyester, or the like having relatively low tackiness. It is. The tackifier is polybutene,
Cyclopentadiene or a hydrogenated derivative thereof, and an alicyclic petroleum resin derived from a dimer of cyclopentadiene.

As described above, in the case of a film having a slight tackiness on the surface, if the cut edge of the film is left as it is, the cut edge is easily adhered to the outer surface of the film inside and easily adhered. However, in the present invention, since the cut edge is folded at the winding end portion of the film, it is easy to visually recognize the position of the broken line at the winding end portion. In addition, the broken line portion is easily picked with a finger, and the winding end portion is easily peeled from the film inside. Further, since the winding end portion is folded, tearing hardly occurs when peeling. Therefore, even if the tape is not provided, the end of the winding can be peeled off, and even if the tape has been adhered, even when the tape is peeled off, the end of the film is wound together with the tape. The part is easily peeled off from the film inside.

At the end of the winding, the cut edge of the film may be folded twice, or may be folded three times or more. In particular, if the bent line at the end of the winding extends obliquely from the portion where the winding tape is stuck toward the both sides in the width direction, the peeling force of the winding tape is increased on both sides in the width direction of the winding end. The winding end portion is easily peeled off, and the winding end portion is easily peeled off. Further, it is preferable that the film is folded to the outer surface side at the winding end portion of the film. When the film is folded toward the outer surface at the winding end, the process of folding the winding end can be simplified.

Next, in the method for manufacturing a film roll of the present invention, a step of winding a film around a surface of a core, a step of cutting the wound film substantially perpendicularly to a winding direction, and folding a cut edge of the film. And bonding the winding end portion folded in the above step to the surface of the film wound inside the winding end portion. Further, in the folding step, the cutting edge of the film is cut so that the folding line at the winding end portion of the film is inclined from the center in the width direction of the film toward both sides in the width direction and toward the film rewinding direction. Folding is preferred.

In the folding step, the guide member can be relatively moved in the rewinding direction at least on both sides in the width direction of the film so that the cut edge of the film can be folded toward the outer surface of the film. It is. Further, the method may include a step of attaching a winding-stopping tape via an adhesive layer over the winding end portion where the cut edge is folded and the outer surface of the film that has been wound inside. it can. Then, the method includes a step of storing the core and the film wound around the core in a case provided with a cutting member.

As described above, after cutting the film roll, a guide member such as a roller or a guide plate is applied to both sides in the width direction of the cut edge, and the film roll is rotated in a direction opposite to the winding direction. This makes it possible to easily turn the cut edge of the film toward the outer surface on both sides in the width direction of the winding end.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a film roll of the present invention and a distribution case for accommodating the film roll. FIGS. 2 and 3 are film winding steps and folding of a film winding end. It is a perspective view explaining a process. FIG.
Has a core 12 made of cardboard. In FIG. 1, the core 12 has a cylindrical shape (circular tube shape).
Or it may be cylindrical. In any case, the core has a circular outer peripheral surface in its cross section. The wrap film F has a thickness of about 10 μm and a length of 10 m to 30 m.
m. The wrap film F is made of polyvinylidene chloride, vinyl chloride, polyolefin, polyamide, polyester, or the like.

The wrap film F is used for home or business use, and when put on a container on which foods and the like are placed, the wrap film F is in close contact with the outer surface of the container and can seal the inside of the film. . Therefore, the wrap film F itself has a slight tackiness on the surface itself, or a tackifier is added. In the case of a single layer film,
A tackifier is added to the entire film, and in the case of a multilayer film, a tackifier is added to at least the surface layer.

At the winding end portion 13 of the wrap film F,
A winding tape 15 is stuck. The adhesive layer is formed on the inner surface of the winding tape 15, the leading end 15 a is attached to the outer surface 14 of the wrap film F that has already been wound on the core 12, and the base end 15 b is located on the winding end 13. Affixed to the surface. The anti-winding tape 15 is attached to a substantially central portion of the film roll 10 in the width direction.

At the winding end portion 13 of the wrap film F,
The cutting edge 17 of the wrap film F is folded outward. From the part where the winding tape 15 is stuck,
A diagonal polygonal line 13 extends across both sides 16 and 16 in the width direction.
b, 13b are formed, and the polygonal lines 13a, 13b
a is inclined from the central portion of the winding end portion 13 to the both side portions 16 and 16 and in the rewinding direction (β direction). That is, at the winding end portion 13, at least in the width direction both side portions 16, 16, the cut edge 17 portion of the wrap film F is folded, so that the both side portions 16, 16 are folded.
The center of the wrap film F in the winding direction (α direction) projects forward from the center of the wrap film F where the wrapping tape 15 is attached.

The above-described film roll 10 is used by being housed in a paper distribution case 20. This distribution case 2
0 has a box body 21 of a rectangular parallelepiped shape. Box body 2
1 is a front plate 22, a back plate 23, a bottom plate 24, both end plates 2
5 and 25, and the upper part is the opening 26. Box body 21
A lid plate 28 is continuous with the upper edge of the back side plate 23, and a boundary portion between the back side plate 23 and the cover plate 28 is bent to form a hinge portion 27. Cover pieces 29 are continuous with the cover plate 28, and side cover pieces 31 are provided on both sides of the cover pieces 29. A saw-tooth-shaped cutting member 32 is attached to the front edge of the cover piece 29.

The cover plate 28 is closed in a state where the film roll 10 is accommodated in the box main body 21 through the opening 26. At this time, the cover piece 29 is placed outside the front side plate 22, and the side cover pieces 31, 31 are placed. It is superposed on the outside of the end plates 25, 25.

When the wrap film F is used for the first time, the cover plate 28 is lifted to open the opening 26, and the film roll 10 is stored in the box body 21.
Alternatively, the film roll 10 is taken out from the inside of the box body 21, and the stopping tape 15 is peeled off. In this operation, the leading end 15a of the wrapping tape 15 is peeled off from the outer surface 14 of the wrap film F. Then, the winding end portion 13 of the wrap film F attached to the base end portion 15b of the winding tape 15 is pulled, and the widthwise central portion of the winding end portion 13 is peeled off from the surface of the inner wrap film. . The peeling force at this time proceeds to both side portions 16, 16 along the inclined broken lines 13a, 13a as shown by the arrow (i).

A polygonal line 13 having an inclined peeling force
a, the peeling force toward the both sides 16, 16 proceeds in the rewinding direction of the film roll 10 (β direction). Thereby, even if the winding end portion 13 adheres to the surface of the wrap film inside,
The winding end portion 13 can be easily peeled off. Also, at the winding end portion 13 where the peeling force progresses, since the wrap film F is folded in two on the outer surface side, even if the resistance force due to the close contact of the film when peeling the winding end portion 13 is large, There is no break in the winding end 13 due to resistance. Therefore, the base end portion 15 of the winding tape 15
winding end 13 of wrap film F drawn by b
Is not disconnected.

With the film roll 10 housed in the box body 21, the winding end portion 13 is drawn out to a desired length outside the distribution case 20, the cover plate 28 is closed, and the front side plate 22 and the cover are closed. The drawn wrap film F is sandwiched between the piece 29 and the piece 29. In this state, the distribution case 20 is twisted, and the cutting member 32
The wrap film F is cut by making the saw teeth bite. The wrap film that has been cut off and remains on the side of the distribution case 20 remains between the front side plate 22 and the cover piece 29, and can be ready for the next drawing operation.

Next, a method of manufacturing the film roll 10 will be described. As shown in FIG. 2, the core 12 is rotated in the direction (a), and the wrap film F guided from the raw material is placed in the core 1.
2 around the outer circumference. When the wrap film F wound around the core 12 reaches a predetermined length, the rotation of the core 12 in the direction (a) is stopped, and the wrap film F is cut by a cutter along a cutting line CC substantially perpendicular to the winding direction. I do.

Immediately after the cutting, the guide rollers 30, 30 are applied to the outer surface 14 of the wrap film F inside the cutting edge 17 and the both sides 16, 16. Then, as shown in FIG. 3, the core 12 is reversely rotated in the (b) direction, or the guide rollers 30, 30 are moved in the β direction. That is, the guide rollers 30, 30 are moved relatively in the rewinding direction (β direction) with respect to the core 12 (the film roll 10). As a result, the cutting edge 17 is folded in two on the outer surface side on both sides 16,16. As a result of the guide rollers 30, 30, the wrap films of the both sides 16, 16 are relatively largely folded, so that fold lines 13 a, 13 a are formed obliquely from the center in the width direction of the winding end portion 13 to both sides 16, 16. .

As shown in FIG. 3, broken lines 13a, 13a
Is formed, a winding-stopping tape 15 is applied to the center of the winding end portion 13 and the outer surface 14 of the wrapped film F that has been wound. A guide plate may be used instead of the guide rollers 30, 30 shown in FIG.
Further, when the winding end portion 13 is bent at both side portions 16, 16, the fold lines 13 a, 13 a do not need to form an inclined line accurately.

FIG. 4 is a perspective view showing a film roll 10A according to another embodiment of the present invention. In the film roll 10A, the cut edge 17 of the wrap film F wound around the core 12 is folded outward to be folded twice or three times or more to form a winding end portion 35. The broken line 35a of the winding end portion 35 extends linearly in the width direction of the wrap film F.

As described above, even if the broken line 35a extends linearly, the broken line 35a, which is the edge of the winding end portion 35, can be easily visually recognized.
When the portion 5a is pinched with a finger, the winding end portion 35 can be easily grasped. Also, when the winding end portion 35 is peeled off, even if the adhesion between the films is strong, since the folded portion has rigidity, the film can be easily peeled off. Is difficult to tear.

Further, in the film roll 10A shown in FIG.
It can be easily peeled off from the part a. Therefore,
The winding tape 15 can be dispensed with, the cost can be reduced, and the number of manufacturing steps can be reduced. The film roll 10A shown in FIG. 4 can be manufactured by, for example, rounding the cut edge 17 of the wrap film F and pressing the cut edge 17 against the inner film surface.

In the film roll 10 shown in FIGS. 1 to 3, even if the winding tape 15 is omitted, the winding end portion 13 can be easily peeled from the broken line 13a. Further, the film is not limited to a film used for a food wrap, and may be a film used for other purposes.

[0031]

As described above, according to the present invention, when the winding end portion of the film is peeled, the winding end portion can be easily peeled off, and a break in the film from the winding end portion can be prevented. Furthermore, it is also possible to omit the winding tape.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a film roll of the present invention and a distribution case for storing the same.

FIG. 2 is a perspective view showing a process of winding a film roll.

FIG. 3 is a perspective view showing a folding step of a winding end portion of a film roll.

FIG. 4 is a perspective view showing a film roll according to another embodiment of the present invention;

FIG. 5 is a perspective view showing a conventional film roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Film roll 12 Core 13 Winding end part 13a Fold line 14 Outer surface 15 Winding tape 16 Both sides 17 Cutting edge 35 Winding end part 35a Fold line F wrap film

Claims (9)

[Claims] 1. A film is wound around the surface of the core,
In the film roll, where the winding end of the film is in close contact with the outer surface of the film wound inside,
A film roll, wherein a cut edge of the film is folded at the winding end portion. 2. A film roll stored in a case in a state where a film is wound around a surface of a core, and a film drawn from the case is cut by cutting means provided in the case. A film roll, wherein an end portion is in close contact with an outer surface of a film wound inside the film, and a cut edge of the film is folded at the end portion of the film. 3. The cut edge of the film is folded so that the fold line at the end of winding of the film is inclined from the center in the width direction of the film toward both sides in the width direction and toward the direction in which the film is rewound. The film roll according to claim 1 or 2, wherein: 4. A film according to claim 1, wherein a winding-stopping tape is attached via an adhesive layer to a winding end portion of the film and an outer surface of the film which has been wound inside. The film roll according to 1. 5. A step of winding a film around a surface of a core, a step of cutting the wound film substantially perpendicular to a winding direction, and a step of folding a cut edge of the film. The winding end
A method for producing a film roll, wherein the film is brought into close contact with the surface of a film wound inside. 6. In the folding step, the fold line of the winding end portion of the film is inclined from the center in the width direction of the film toward both sides in the width direction and toward the film rewinding direction. The method for producing a film roll according to claim 5, wherein the cutting edge is folded. 7. In the folding step, at least on both sides in the width direction of the film, the guide member is relatively moved in the rewinding direction, and the cut edge of the film is folded toward the outer surface of the film. 7. The method for producing a film roll according to 6. 8. The method according to claim 1, further comprising the step of applying an anti-winding tape via an adhesive layer over the end of the winding where the cut edge is folded and the outer surface of the film which has been wound inside. 8. The method for producing a film roll according to any one of 5 to 7. 9. A process for accommodating a core and a film wound around the core in a case provided with a cutting member.
9. The method for producing a film roll according to any one of items 8 to 8.