JP2000343605A - Method and device for sticking film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for sticking a film in which the film is stuck on the outer peripheral face of a sticking drum without using a technique of sucking air from a suction hole formed in the outer peripheral face of the sticking drum. SOLUTION: The device for sticking a film is constituted of a cutting carrier means 20 by which a label is formed by successively cutting a label-forming base material M supplied by feeding rollers 10 while carrying the same to a delivery position P2, a label-sticking means 30 for sticking the label on the outer peripheral face of the body of a beverage vessel C in a sticking position P3 and a screw conveyor 40 supplying the drinking vessel C to the label-sticking means 30. The label-sticking means 30 is equipped with a sticking drum 31 carrying the label delivered in the delivery position P2 to the sticking position P3 in such a state that the delivered label is stuck on the outer periphery face, a charging means for charging the outer peripheral face to stick the label on the outer peripheral face of the sticking drum 31 by static electricity and a radiation heat heater 33 heating the label.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film sticking method and a film sticking apparatus for sticking a film to an object such as a container.

[0002]

2. Description of the Related Art As a film sticking apparatus, there is a labeling apparatus for sticking a label made of a synthetic resin film to a body of a body to be stuck such as a container as shown in FIG. The labeling device 50 includes a cutting and conveying unit 51 that forms a label L by cutting a long strip-shaped label forming substrate M made of a synthetic resin film into a predetermined length and conveys the label L to a delivery position α. 51, the label L conveyed to the delivery position α by the receiving drum 51, is received at the delivery position α, is conveyed to the label attaching position β, and is attached to the body outer peripheral surface of the adherend C supplied to the attaching position β.
4 is provided.

The cutting and conveying means 51 comprises a rotary cutter 52 having a cutting blade 52a attached to the outer peripheral surface thereof for holding the fed label forming substrate M, and a cutting and conveying roll 53.
The label transfer base material M to be fed can be suction-held on the outer peripheral surface thereof by suction means (not shown) mounted on the cutting and conveying roll 53. Therefore, the rotary cutter 52 and the cutting / conveying roll 53 rotate (rotate) while the label forming substrate M is held therebetween.
Then, the label forming substrate M is cut to a predetermined length by the cooperative action of the rotary cutter 52 and the cutting and conveying roll 53 while being conveyed to the delivery position α while being suction-held on the outer peripheral surface of the cutting and conveying roll 53, and Is formed. Then, the label L thus formed is
It is delivered to the attaching drum 54 at the delivery position α.

As shown in FIGS. 4 and 5, the sticking drum 54 includes a drum body 55 that is driven to rotate by driving means (not shown), and a fixing portion 56 with which the drum body 55 slidably contacts. Have been. The drum body 55 has a number of suction holes 55 opened on the outer peripheral surface thereof.
a are formed so as to be aligned at regular intervals in the circumferential direction and in the width direction of the outer peripheral surface, and a plurality of suction holes 55a forming each row of holes in the width direction are formed through the communication passage 55b.
6 is open to the contact surface.

[0005] The fixing portion 56 has a suction groove 56a formed in a contact surface with the drum main body 55 to communicate with the suction hole 55a (communication passage 55b) from the delivery position α to the sticking position β. This suction groove 56a is connected to suction means (not shown). Therefore, the label L delivered from the cutting and conveying means 51 at the delivery position α is
5 is conveyed to the sticking position β while being suction-held on the outer peripheral surface of No. 5.

The sticking position β is supplied by a supply means (not shown) while the body C to be attached is supplied while rotating. The body outer peripheral surface of the body C to be attached is rotated by the attaching drum 54. Is pressed along the outer peripheral surface of the attaching drum 54 while being pressed against the label L sucked and held on the outer peripheral surface of the object C.
Is moved, the label L sucked and held on the outer peripheral surface of the attaching drum 54 is attached while being wound on the outer peripheral surface of the body of the adherend C.

[0007]

However, the film sticking apparatus 50 as described above has a large number of suction holes 55a formed on the outer peripheral surface of the drum body 55 of the sticking drum 54.
The film (label) is attached to the outer peripheral surface of the drum main body 55 by sucking air from the apparatus, and the film is applied to the adherend C by pressing the adherend C against the outer peripheral surface of the drum main body 55. Attach the suction holes 5
There is a problem that the mark of 5a is transferred to the film side and the appearance of the film is impaired. Such a problem becomes conspicuous when the thickness of the film is small or when the film is heated in advance like a heat-sensitive adhesive film.

Further, it is necessary to perform troublesome hole processing such as forming a large number of suction holes 55a on the outer peripheral surface of the drum main body 55, and moreover, air is drawn from the suction holes 55a formed on the outer peripheral surface of the drum main body 55. In order to perform suction, it is necessary to form a communication passage 55b in the drum main body 55 and to provide a fixing portion 56 having a groove 56a communicating with the communication passage 55b.
There is a problem that the unit 4 itself becomes a very expensive unit.

Further, as described above, in order to adhere the film to a predetermined position on the outer peripheral surface of the drum main body 55 accurately by sucking air from the suction holes 55a formed in the outer surface of the drum main body 55, To ensure that the leading end of the film to be delivered is positioned at the suction hole 55a,
It is necessary to finely adjust the timing of film delivery, especially when the length of the film to be pasted changes, the film delivery timing must be adjusted each time Therefore, there is also a problem that the setup change is troublesome.

Further, when the film to be attached to the object C is a heat-sensitive adhesive film, it is necessary to heat the drum body 55 itself to which the film is to be attached by a heater or the like in order to activate the heat-sensitive adhesive. However, as described above, since the drum body 55 is cooled by sucking the air from the suction holes 55a formed on the outer peripheral surface of the drum body 55, the energy loss accompanying the air suction is compensated for. Another problem is that the capacity of the heater to be installed must be increased.

In view of the above problems, an object of the present invention is to attach a film to the outer peripheral surface of a sticking drum without using a method of sucking air from a suction hole formed in the outer peripheral surface of the sticking drum. It is an object of the present invention to provide a film sticking method and a film sticking device that can be made to work.

[0012]

Means for Solving the Problems and Their Effects In order to solve the above-mentioned problems, the present invention provides a method in which a film is detachably attached to an outer peripheral surface of a rotating application drum, and an object to be adhered is brought into contact with the film. Thus, in the film attaching method in which the film is attached while winding the film around the adherend, the film is attached to the outer peripheral surface of the attaching drum by static electricity by charging the outer peripheral surface of the attaching drum. . As described in claim 3, the film sticking method as described above causes a film to be detachably attached to the outer peripheral surface of the spinning sticking drum,
By contacting the object to be adhered to this film, in a film sticking apparatus that sticks while winding the film around the object to be adhered, charging means for charging the outer peripheral surface of the sticking drum is provided, and the charging means is charged by the charging means. It can be carried out by a film sticking device in which the film is attached to the outer peripheral surface of the sticking drum by static electricity.

In the film sticking method and the film sticking apparatus configured as described above, the outer circumferential surface of the sticking drum is charged to attach the film to the outer circumferential surface of the sticking drum by static electricity. There is no need to perform complicated hole processing such as forming a large number of suction holes on the outer peripheral surface, and there is no need to provide a communication path or a fixed part for sucking air from the suction holes, so the structure of the sticking drum is simple. Thus, the sticking drum can be manufactured at low cost, and since the trace of the suction hole is not transferred to the film, the film can be stuck to the object without damaging the appearance.

Further, since the film can be adhered at any position on the outer peripheral surface of the sticking drum in the same manner, the conventional method of adhering the film by sucking air from a suction hole formed on the outer peripheral surface of the sticking drum. Unlike the method, it is not necessary to finely adjust the timing of film transfer so that the leading end of the film to be transferred is positioned at the suction hole portion, and the setup can be easily changed.

Further, since the air is not sucked from the suction holes formed on the outer peripheral surface of the sticking drum, the sticking drum itself is not cooled by the suction, and the film to be stuck is heat-sensitively bonded. 3. A conductive film.
In the case where the application drum must be heated in order to activate the heat-sensitive adhesive as in the film application method described in, the capacity of the heater installed for heating can be suppressed to a small value. Costs and running costs can be reduced.

[0016]

Embodiments will be described below with reference to the drawings. A labeling device 1 which is an embodiment of the film sticking device shown in FIG. 1 cuts a long band-shaped label forming substrate M to which a heat-sensitive adhesive label (hereinafter, referred to as a label) of a predetermined length is continuously connected. While forming a label of a predetermined length by sequentially cutting at P1,
The label is sequentially attached so as to be wound around the outer peripheral surface of the body of the beverage container C as the object to be attached, which is conveyed to a predetermined label attaching position P3, and the label is made of polyethylene terephthalate. The printing is performed on the inner surface of the film, and the heat-sensitive adhesive is applied.

As shown in FIGS. 1 and 2, the labeling apparatus 1 includes a pair of feed rollers 10 for continuously feeding a long label-forming base material M wound in a roll shape to a cutting position P1. A cutting and conveying means 20 for forming a label by sequentially cutting at a predetermined cutting pitch at a cutting position P1 while conveying the label forming base material M supplied by the feed roller 10 to a delivery position P2; The position P3 includes a label sticking means 30 for sticking a label on the outer peripheral surface of the body of the beverage container C, and a screw conveyor 40 as a container supply means for supplying the beverage container C to the label sticking means 30.

As shown in FIG. 1, the cutting / conveying means 20 comprises a rotary cutter 21 having a cutting blade (not shown) mounted on the outer peripheral surface thereof, and a label-forming base material M supplied by the feeding roller 10. Delivery position P2 by suction holding on the outer peripheral surface
And a cutting / conveying roll 22 for sequentially cutting the label-forming substrate M into a predetermined length by cooperation with the rotary cutter 21. The cutting / conveying roll 22 is moved from the cutting position P1 to the delivery position P2. The label forming substrate M is sucked and held on the outer peripheral surface until this time.

The label affixing means 30 is shown in FIGS.
As shown in the figure, the label delivered at the delivery position P2 is transported to the attaching position P3 with the label attached to the outer peripheral surface. The attaching drum 31 having the outer peripheral surface covered with silicone rubber, and the outer periphery of the attaching drum 31 A charging unit 32 for charging the outer peripheral surface of the sticking drum 31 to attach the label to the surface by static electricity; a radiant heat heater 33 for heating the label during conveyance by the sticking drum 31; and a beverage container supplied by the screw conveyor 40 C
Guide plates 34a and 34b for guiding the liquid container C into contact with the outer peripheral surface of the application drum 31 at the application position P3, and the beverage container C supplied by the screw conveyor 40 is guided between the guide plate 34b and the application drum 31. And a star wheel 35.

As shown in FIGS. 1 and 2, the charging means 32 is located between the transfer position P2 and the sticking position P3 in the rotation direction of the sticking drum 31 so as to face the outer peripheral surface of the sticking drum 31. Electrodes 32a respectively erected in the foreground
And an electrostatic generator 32b for applying a high voltage of -20 to -30 kv to the electrodes 32a, and the outer peripheral surface of the sticking drum 31 by discharging from the electrodes 32a installed in front of the delivery position P2. Is charged,
The transferred label adheres to the outer peripheral surface of the attaching drum 31 by static electricity, and discharge from the electrode 32a installed before the attaching position P3 to the label attached to the outer peripheral surface causes
The adhesive force is further increased.

The labeling apparatus 1 configured as described above
In the state where the label forming base material M supplied by the feeding roller 10 is cut into labels of a predetermined length by the cutting and conveying means 20 and the cut labels are suction-held on the outer peripheral surface of the cutting and conveying roll 22, It is transported to the delivery position P2. When the label reaches the delivery position P2, the suction of the cutting / conveying roll 22 is released, so that the leading end of the label separates from the outer peripheral surface of the cutting / conveying roll 22, and the sticking drum 31 charged by the discharge from the electrode 32a. The label is delivered to the sticking drum 31 by being attached to the outer peripheral surface by static electricity.

The label adhering to the outer peripheral surface of the adhering drum 31 is conveyed to the adhering position P3 by the rotation of the adhering drum 31. While the adhesive is activated, the adhesion of the label is further enhanced by the discharge from the electrode 32a.

At the sticking position P3, the screw conveyor 4
0 is supplied by the star wheel 3
5, the beverage container C is guided between the guide plate 34b and the sticking drum 31 and the beverage container C is pressed against the heat-sensitive adhesive of the label attached to the outer peripheral surface of the sticking drum 31 by the guide plate 34b. By moving while rotating along the label, the label is attached while being wound around the body of the beverage container C.

The labeling apparatus 1 configured as described above
Is configured to charge the outer peripheral surface of the sticking drum 31 by the charging means 32 so that the label is attached to the outer peripheral surface of the sticking drum 31 by static electricity. There is no need to perform complicated hole processing such as forming many suction holes in
In addition, since there is no need to provide a communication path or a fixing portion for sucking air from the suction hole, the structure is simplified, and the cost of the attaching drum 31 can be reduced.

Since there is no suction hole on the outer peripheral surface of the sticking drum 31, even if the label to be stuck is formed of a thin film, the trace of the suction hole is not transferred to the label. The label can be stuck to the beverage container C neatly.

Further, since the sticking drum 31 is charged on its outer peripheral surface to attach a label by static electricity, the label can be attached in any position on the outer peripheral surface of the sticking drum 31 in the same manner. Can be. Therefore, like a conventional film sticking device that attaches a film by sucking air from suction holes formed on the outer circumferential surface of the sticking drum 31, the leading end of the film that is to be attached to the outer circumferential surface of the sticking drum 31 has To ensure that the film is positioned at the suction hole, the application drum 31 can be used without fine adjustment of the timing of film transfer.
The label can be reliably positioned with respect to, and the setup can be easily changed.

Further, since a method of sucking air from suction holes formed on the outer peripheral surface of the sticking drum is not adopted, the sticking drum is cooled by sucking air as in a conventional film sticking apparatus. The capacity of the radiant heat heater 33 for heating the label attached to the outer peripheral surface of the attaching drum 31 together with the attaching drum 31 in order to activate the heat-sensitive adhesive applied to the label without any It can be suppressed to about 2/3, and reduction in apparatus cost and running cost can be achieved.

In this embodiment, the labeling apparatus 1 for attaching the heat-sensitive adhesive label to the beverage container C has been described, but the apparatus for carrying out the film attaching method of the present invention is not limited to such. Not something
It goes without saying that the present invention can be applied to a film sticking apparatus for sticking various films to various objects to be stuck.

Further, in this embodiment, the electrodes 32a are provided both before the delivery position P2 and before the sticking position P3, but the electrodes 32a installed before the delivery position P2 are provided.
If the voltage applied to a is increased, it is not necessary to provide the electrode 32a before the sticking position P3.

In this embodiment, the sticking drum 31
Is covered with silicone rubber having good insulating properties. However, in order to charge the outer peripheral surface of the sticking drum 31, the outer peripheral surface does not necessarily need to be formed of an insulator, and is completely insulated. If so, the outer peripheral surface of the attaching drum 31 may be formed of a conductive material.

In this embodiment, the sticking drum 31
Is heated by the radiant heat heater 33. However, a radiant heat heater for heating only the sticking drum 31 may be separately provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a labeling device (film sticking device) according to the present invention.

FIG. 2 is a side view showing the same labeling device.

FIG. 3 is a schematic configuration diagram showing a conventional film sticking apparatus.

FIG. 4 is a sectional view showing a sticking drum in the film sticking apparatus according to the first embodiment.

FIG. 5 is a schematic plan view showing the attaching drum according to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Labeling apparatus 10 Feeding roller 20 Cutting and conveying means 30 Label sticking means 31 Sticking drum 32 Charging means 32a Electrode 32b Static electricity generator 40 Screw conveyor C Drink container

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Masaharu Takamura 1-5 Ishiharacho, Sakai-shi, Osaka F-term, F-Tech Co., Ltd. F-term (reference) 4F211 AA24 AD03 AD05 AD09 AD12 AG03 AG07 AG08 AH55 AK01 AK08 AM29 SA04 SC01 SD01 SH19 SH30 SJ01 SJ13 SJ15 SJ16 SJ23 SJ29 SN13 SP04 SP22

Claims (3)

[Claims] 1. A film sticking method in which a film is removably attached to an outer peripheral surface of a rotating sticking drum, and an object to be stuck is brought into contact with the film so that the film is wound around the object to be stuck. A film sticking method, wherein the film is made to adhere to the outer circumferential surface of the sticking drum by static electricity by charging the outer circumferential surface of the sticking drum. 2. The method according to claim 1, wherein the film is a heat-sensitive adhesive film. 3. A film sticking apparatus which sticks a film on an outer peripheral surface of a rotating sticking drum so as to be peelable, and contacts an object to be stuck to the film, thereby winding the film around the object to be stuck. A film sticking apparatus, comprising: charging means for charging an outer peripheral surface of the sticking drum, wherein the film is electrostatically attached to the outer peripheral surface of the sticking drum charged by the charging means.