JPH0752137Y2 - Aluminum foil scroll - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a roll of aluminum foil used for manufacturing a press-through pack and other packages.

[Prior art]

2. Description of the Related Art Press-through packs have been conventionally manufactured by laminating and laminating a sheet-shaped aluminum foil, which serves as a lid, on the mouth of a sheet-shaped container body. At this time, the sheet-shaped aluminum foil is supplied by rewinding the rolled aluminum foil. Then, when all the aluminum foil of the roll is consumed and the supply of the aluminum foil becomes impossible, it is detected by a photoelectric tube or the like, the press-through pack production line is stopped, and a new roll of aluminum foil is replaced. . By the way, a roll of aluminum foil is created by winding the aluminum foil around a winding core. At this time, the winding core side end of the aluminum foil must be adhered to the winding core with an adhesive tape or the like at the beginning of winding. Therefore, when this aluminum foil roll is used for manufacturing a press-through pack, when the aluminum foil is completely consumed, the core side end of the aluminum foil may not be well separated from the core. That is, the adhesive tape may be mixed into the press-through pack manufacturing line while being adhered to the core end of the aluminum foil. Further, when a paper tube is used as the winding core, the paper on the surface layer of the paper tube sometimes mixes into the press-through pack production line. If the adhesive tape or the paper is mixed in the production line, there arises a defect that the production apparatus is broken. In addition, defective products are generated by being mixed in the press-through pack which is a product, and the yield of the press-through pack is reduced. For this reason, the following method is adopted in order to satisfactorily separate the core side end and the core of the aluminum foil. That is, a perforation is provided in the vicinity of the core side end of the aluminum foil, a method of cutting the aluminum foil along the perforation, and the core side end of the aluminum foil and the paper core that is the core. This is a method of adhering with an adhesive tape, making a cut in the boundary between the adhesive tape and the winding core, and separating the core side end of the aluminum foil and the winding core along this cut. However, in the method of (1), the aluminum foil is not necessarily cut along the perforations, and eventually the adhesive tape for bonding the core and the core-side end is mixed in the press-through pack manufacturing line, which causes the above-mentioned drawbacks. Occurs. In addition, the provision of the eyes on the edge of the aluminum foil winding core side end has a drawback that the production of the aluminum foil roll is complicated. The method is that the paper of the surface layer of the paper tube which is the core is rarely mixed in the press-through pack production line,
The adhesive tape surely mixes in the production line, and the above-mentioned drawbacks occur. Furthermore, it is not clear by any method how the core-side end is treated on the appearance of the aluminum foil roll, and the core-side end of the aluminum foil is manufactured at the time of manufacturing the press-through pack. It must be constantly monitored for good separation between the core and the core. That is, the operator at the manufacturing site of the press-through pack is overloaded.

[Problems to be solved by the device]

Therefore, the applicant of the present invention has provided the device according to Japanese Patent Application No. 1-35224. As shown in FIG. 1, the present invention is that an adhesive tape (31) is attached to the aluminum foil (1) in the width direction of the aluminum foil (1) at a constant inclination in the vicinity of the core side end (2) of the aluminum foil (1). I wore it. If you do this,
When the aluminum foil (1) is unwound and consumed,
The aluminum foil (1) can be cut along the adhesive tape (31) to avoid the above-mentioned defects. However, in the case of this invention, the aluminum foil (1)
There was some resistance in the central part of the width, and it was difficult to cut. In view of this, the present invention reduces the resistance not only at the width edge of the aluminum foil but also at the width center of the aluminum foil by devising the method of attaching the adhesive tape, and makes it easier to cut the whole.

[Means for Solving the Problems]

That is, the present invention relates to a roll of aluminum foil wound around a winding core, wherein the adhesive tape has a V-shape and the V-shaped valley is at the edge of the aluminum foil near the end on the winding core side. A roll of aluminum foil, which is attached over the entire width of the aluminum foil so as to face the end side of the core, and both ends of the adhesive tape are attached to the core. It is about. The present invention will be described below with reference to the drawings. FIG. 2 is a plan view of a near edge portion of a core side end of a roll of aluminum foil according to an example of the present invention, and FIG. 3 is a side view thereof. In the aluminum foil (1), the adhesive tape (3) is attached to the aluminum foil (1) in the vicinity of the core side end (2).
It is attached in the width direction of. This adhesive tape (3) is V
It has a V-shape, and the V-shaped trough is the core end (2).
Facing the direction. Further, the inclination of the V-shaped straight line portion is preferably about 5 to 30 °, particularly about 15 ° with respect to the axial direction of the winding core (4). If the inclination is less than 5 °, the aluminum foil (1) tends to be difficult to cut. Also, the slope
If it exceeds 30 °, the adhered portion of the adhesive tape (3) becomes long and the effective use of the aluminum foil (1) tends to be hindered. Both ends of the adhesive tape (3) are attached to the core (4). The adhesive tape (3) portion attached to the winding core (4) may extend to the side surface of the winding core (4) or further to the inner peripheral surface of the winding core (4). Good (see Figure 3). In order to facilitate the production of the aluminum foil (1) roll, when winding the aluminum foil (1) around the winding core (4), the core side end (2) of the aluminum foil (1) is attached to the adhesive tape ( It is preferable to attach it (not shown) or the like. In the present invention, the aluminum foil (1) may be an aluminum foil alone or a two-layer structure in which a synthetic resin layer is provided on the aluminum foil.
Further, it may have a multi-layer structure in which several layers of various synthetic resin layers are laminated on the basis of aluminum foil. Further, the adhesive tape (3) may be an adhesive tape in which an adhesive is applied to the tape base cloth, or a heat-sensitive adhesive tape in which a heat-melting resin is applied to the tape base cloth. Furthermore, as the tape base cloth, cellophane tape,
Any material such as polyolefin tape, polyester tape, non-woven tape, knitted fabric tape, etc. can be adopted. In particular,
It is most preferable to use a synthetic resin tape having a low elongation and a high strength, for example, a polyester tape so that the aluminum foil (1) can be easily cut.

[Action and effect of the device]

As described above, the aluminum foil scroll according to the present invention has the following features:
The adhesive tape is V-shaped, and the V-shaped troughs are attached over the entire width of the aluminum foil so that the valleys of the V-shaped ends face toward the winding core end, and both ends of the adhesive tape are wound on the winding core. Since it is attached to, the aluminum foil is rewound and consumed, and when tension is applied at the end, the aluminum foil is cut from both ends of the adhesive tape adhered to the winding core,
Then, the aluminum foil is cut from both sides toward the central portion along the V-shaped straight line. Therefore, since the central portion of the width of the aluminum foil is cut from both sides, the resistance at the time of cutting is small and the aluminum foil can be easily cut as a whole. Therefore, when the aluminum foil roll according to the present invention is used in the production of a press-through pack, when the aluminum foil is completely consumed, the aluminum foil is cut with a small resistance and separated from the core, and the adhesive tape is used. Also, the paper on the surface layer of the paper tube, which is the core, does not enter the press-through pack manufacturing line. Therefore, it is possible to prevent the manufacturing apparatus of the press-through pack from failing and prevent the press-through pack from being mixed with an adhesive tape or the like to generate a defective product. Further, since the adhesive tape appears on both sides of the core of the aluminum foil roll according to the present invention, it is apparent from the appearance that the core side end of the aluminum foil has been treated, and at the time of manufacturing the press-through pack. This eliminates the need for the operator to constantly monitor the rolled aluminum foil, and can reduce the burden on the operator at the manufacturing site of the press-through pack. Further, the aluminum foil roll according to the present invention has an effect that the roll can be easily produced because it is only necessary to bond an adhesive tape to the near edge portion of the core side end. The aluminum foil scroll according to the present invention is mainly
Although the description has been centered on the case where it is used for manufacturing a press-through pack, it goes without saying that it is also used for manufacturing other packages.

[Brief description of drawings]

FIG. 1 is a plan view of a near edge portion of a core side end of a roll of aluminum foil showing an example of a device according to Japanese Utility Model Application No. 1-35224. FIG. 2 is a plan view of a near edge portion of a core side end of a roll of aluminum foil according to an example of the present invention, and FIG. 3 is a side view thereof. (1) …… Aluminum foil, (2) …… Aluminum foil core end, (3) …… Adhesive tape, (4) …… Core core,

Claims (1)

[Scope of utility model registration request] 1. A roll of aluminum foil wound around a winding core, wherein the adhesive tape has a V-shape and the V-shaped valley is wound around the edge of the end of the aluminum foil on the winding core side. A rolled aluminum foil, characterized in that it is adhered over the entire width of the aluminum foil so as to face the core-side end direction, and both ends of the adhesive tape are adhered to the core.