JP2016166039A - Label sticking device and label sticking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label sticking device and a label sticking method in which a label can be stuck to a film with high adhesive strength by sticking the label immediately after corona treatment is applied to the film.SOLUTION: A label sticking device 10 for sticking a label L to a film 50 comprises: a film transfer part 12 for transferring a belt-like film 50 along a transfer direction D; and a corona treatment part 27 for applying in advance corona treatment to a position of the film 50 transferred by the film transfer part 12, where the label L is stuck. A label sticking part 26 for sticking the label L to the film 50 transferred by the film transfer part 12 is provided on the downstream side of the corona treatment part 27 in the transfer direction D. The corona treatment part 27 and the label sticking part 26 are provided inside one label sticking device 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a label attaching apparatus and a label attaching method for attaching a label to a film.

  2. Description of the Related Art Conventionally, a container sealing device is known that fills a container such as a tray with contents such as food and seals the opening of the container with a film (see, for example, Patent Documents 1 and 2). A label such as a barcode may be attached in advance to a film that seals such a container. In this case, a container such as a tray is sealed using a film with a label attached thereto.

JP 59-187507 A JP 2002-264903 A JP 2001-131314 A

  Conventionally, a technology that effectively activates the sheet surface by corona discharge treatment and improves secondary coating by improving the coating properties and adhesiveness (wetting properties) of printing inks, release agents, adhesives, etc. is known. (See, for example, Patent Document 3). And when it is necessary to stick a label with especially high adhesive strength with respect to a film, it is possible to perform a corona treatment to a film previously and to stick a label to the location which performed the corona treatment.

  However, conventionally, after a certain amount of time has elapsed after corona treatment on the film, the effect of the corona treatment is lost, or foreign matter such as dust is likely to adhere to the corona treated portion. Problem arises. In this case, it may be difficult to adhere the label to the film with high adhesive strength.

  The present invention has been made in consideration of such points, and after performing corona treatment on the film, the label can be adhered to the film with high adhesive strength by immediately adhering the label. An object is to provide a label sticking apparatus and a label sticking method that are possible.

  In the label sticking apparatus for sticking a label to a film, the present invention provides a film transport unit that transports a strip-shaped film along a transport direction, and the label among the films transported by the film transport unit. A corona treatment part for pre-corona-treating the part to be attached, and a label sticking which is provided on the downstream side in the transfer direction of the corona treatment part and attaches a label to the film transferred by the film transfer part. It is a label sticking apparatus provided with a sticking part, and the corona treating part and the label sticking part are provided in one device.

  This invention is a label sticking apparatus characterized by the said corona treatment part performing the corona treatment to the said film continuously or intermittently.

  The present invention is the label sticking apparatus characterized in that a mark applying unit is provided for applying alignment marks at predetermined intervals to the film transferred by the film transfer unit.

  As for this invention, the said label sticking part is a label supply part which supplies a strip | belt label, the label peeling part which peels the said label away from the said strip | belt label, and sticks it on the said film, From the said strip | belt label, it is from the said label. It has a label collection | recovery part which collect | recovers the peeled peeling sheet, It is a label sticking apparatus characterized by the above-mentioned.

  In the label sticking method for sticking a label to a film, the present invention attaches the label among the film transporting step of transporting a strip-shaped film along the transport direction and the transported film. A corona treatment step for corona treatment in advance, and a label sticking step for sticking a label to the transferred film after the corona treatment step, the corona treatment step and the label sticking step, Is performed in one apparatus.

  According to this invention, the corona treatment part which corona-treats the location where a label is affixed among films beforehand, and the label sticking part which affixes a label with respect to a film are provided in one apparatus. Yes. Thereby, since a label can be stuck immediately after corona-treating a film, a label can be stuck to a film with high adhesive strength.

FIG. 1 is a schematic front view showing a label sticking apparatus according to an embodiment of the present invention. 2A and 2B are schematic plan views showing a film to which a label is attached. FIG. 3 is a schematic enlarged view showing a label peeling portion of the label attaching portion. FIG. 4 is a schematic sectional view showing a container with a film.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 are views showing an embodiment of the present invention.

  First, the outline of the label sticking apparatus according to the present embodiment will be described with reference to FIG.

  The label sticking apparatus 10 shown in FIG. 1 sticks the label L with respect to the film 50 so that it may mention later. Such a label sticking apparatus 10 includes a housing 34, a film transfer part 12, a corona treatment part 27, and a label sticking part 26. In the present embodiment, at least the corona treatment unit 27 and the label sticking unit 26 are provided in one device (label sticking device 10).

  The film transport unit 12 transports the belt-shaped film 50 along the transport direction D. The film transfer unit 12 includes an unwinding roll 23 for unwinding the belt-shaped film 50 and a winding roll 24 for winding the film 50 with the label L attached thereto. Among these, the unwinding roll 23 rolls the strip | belt-shaped film 50 before the label L is affixed in roll shape, The winding roll 24 rolls the film 50 in which the label L was affixed to roll shape. It is rolled up. In this case, the film 50 is unwound from the unwinding roll 23, is sequentially guided by a plurality of guide rollers 25 arranged in the middle, is subjected to corona treatment on a part thereof by the corona treatment unit 27, and is attached to the label attaching unit. After the label L is attached by 26, it is wound by the winding roll 24.

  In addition, the film transport unit 12 is intermittently controlled by a servo motor (not shown), and can transport the film 50 from the unwinding roll 23 toward the winding roll 24, or can temporarily stop the transport of the film 50. It is. In the present specification, the transfer direction D refers to a direction in which the film 50 is conveyed while being unwound from the unwinding roll 23 and being wound by the winding roll 24.

  The belt-like film 50 is made of a single layer sheet such as PE (polyethylene), PP (polypropylene), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), or a film such as EVOH or nylon (registered trademark). The film 50 may be a stretched film or an unstretched film. The film 50 may be pre-printed with patterns, characters, designs, etc., or may be plain.

  A tension controller (dancing bar) 33 for adjusting the tension of the film 50 is disposed downstream of the unwinding roll 23 in the transport direction D. The tension controller 33 is movable in the vertical direction. By adjusting the vertical position of the tension controller 33, the tension of the film 50 is kept substantially constant.

  On the downstream side of the tension controller 33 in the transfer direction D, the mark applying unit 13 is provided. The mark applying unit 13 applies alignment marks (register marks) M (see FIG. 2) to the film 50 transferred by the film transfer unit 12 at predetermined intervals. That is, the mark imparting unit 13 has a distance meter (not shown), and has a function of printing the alignment mark M at predetermined intervals while measuring the transport distance of the film 50 by this distance meter. The mark applying unit 13 may include a printer for printing the alignment mark M, such as an ink jet printer, a thermal printer, or a laser printer. The alignment mark M may be provided on either the front or back surface of the film 50. Moreover, when it is not necessary to provide the alignment mark M to the film 50, the mark providing part 13 does not necessarily need to be provided.

  As shown in FIGS. 2A and 2B, the alignment mark M is provided at one end of the film 50 in the width direction. The alignment mark M is regularly printed at predetermined intervals along the length direction of the film 50. As will be described later, the alignment mark M is used as a mark when the film 50 taken up by the take-up roll 24 is separately attached to the container 40 (described later). On the other hand, it is provided in a place having a certain positional relationship. As will be described later, the alignment mark M may be used to identify the location where the corona treatment is performed on the film 50 in the corona treatment unit 27, or the label on the film 50 in the label attaching unit 26. You may use in order to identify the location which sticks L.

  Referring to FIG. 1 again, a corona treatment unit 27 is provided on the downstream side in the transfer direction D of the mark applying unit 13. The corona treatment part 27 performs a corona treatment (easy adhesion treatment) in advance on a portion of the film 50 where a label L (see FIG. 2) is stuck by a label sticking part 26 described later. That is, the corona treatment unit 27 includes a discharge electrode 35 and a counter electrode roll 36 installed at a position facing the discharge electrode 35 with respect to the film 50. A corona discharge is generated between the discharge electrode 35 and the counter electrode roll 36 by applying a high-frequency voltage between the discharge electrode 35 and the counter electrode roll 36. In the corona treatment unit 27, the film 50 is moved along the surface of the counter electrode roll 36 to pass through the corona discharge, thereby performing the surface treatment.

  With this corona treatment section 27, a part of the surface of the film 50 is modified by corona discharge treatment, and the wettability of this portion is improved, thereby making it possible to easily attach the label L. The area | region of the film 50 corona-treated by the corona treatment part 27 may be continuously extended in strip | belt shape along the longitudinal direction (transfer direction D) of the film 50 (refer Fig.2 (a)). Alternatively, a plurality of corona-treated regions may be intermittently arranged in a dot shape, for example, along the longitudinal direction (transfer direction D) of the film 50 (see FIG. 2B). In FIGS. 2A and 2B, the area subjected to the corona treatment is indicated by hatching for convenience. The corona treatment part 27 should just be provided in any position between the unwinding roll 23 and the label sticking part 26, and is not limited to the location shown in FIG. For example, the corona treatment unit 27 may be provided on the upstream side in the transfer direction D from the mark applying unit 13.

  On the downstream side of the corona treatment unit 27 in the transfer direction D, a label attaching unit 26 for attaching the label L to the film 50 is provided. In this label sticking part 26, the label L is stuck to the predetermined position on the film 50 at a fixed interval. The label L may be affixed to the moving film 50 or may be affixed to the stopped film 50 by intermittently stopping the film 50. The label L is attached to a part of the area subjected to corona treatment by the corona treatment unit 27 described above. As the label L, for example, a barcode, an IC tag or the like, which is attached to the surface of the film 50, and exhibits a predetermined function related to the film-equipped container 60 or the contents 41 (see FIG. 4). If it is, it will not be specifically limited.

  Next, with reference to FIG. 1 and FIG. 3, the structure of the label sticking part 26 is further demonstrated.

  As shown in FIG. 1, the label attaching unit 26 includes a label supply roller (label supply unit) 42, a label peeling unit 43, and a label collection roller (label collection unit) 44. Among these, the label supply roller 42 supplies the belt-like label 45 toward the label peeling part 43, and is composed of a roller around which the belt-like label 45 is wound. A guide roller 46 is provided between the label supply roller 42 and the label peeling portion 43 to guide the strip label 45 fed from the label supply roller 42. The label peeling unit 43 separates the label L from the belt-like label 45 sent from the label supply roller 42 and sticks it to the film 50. Here, the strip-shaped label 45 includes a release sheet 47 made of release paper, for example, and a plurality of labels L provided on the release sheet 47.

  As shown in FIG. 3, the label sticking part 26 has a peeling member 48 for peeling the label L from the belt-like label 45. The peeling member 48 has a substantially triangular cross section, and the conveying direction of the belt-like label 45 is largely changed to the label collecting roller 44 side at an acute angle portion at the tip. At this time, the release sheet 47 can change the conveyance direction toward the label collection roller 44 side, but the label L advances without changing the direction and maintains the direction as it is. As a result, the label L is peeled off and separated from the belt-like label 45 and attached to the film 50. In addition, a guide roller 49 is provided in front of the peeling member 48 for guiding and sticking the label L thus peeled to the film 50 side.

  On the other hand, as shown in FIG. 1, the label collection roller 44 collects the (remaining) release sheet 47 separated from the label L in the belt-like label 45. A motor 52 is connected to the label collection roller 44. When the motor 52 is driven, the belt-like label 45 from the label supply roller 42 is wound around the label collection roller 44. The label collecting roller 44 starts driving when it receives a roller driving signal from the control unit 30, which will be described later, and stops driving when it receives a roller stop signal from the control unit 30. As described above, the belt-like label 45 is intermittently fed within the label attaching portion 26 while repeating the progress and the stop.

  The label supply roller 42 is provided with a mechanism 53 that gives resistance to the rotation of the shaft so that the tension of the belt-like label 45 is controlled.

  The unwinding roll 23, the winding roll 24, the tension controller 33, the mark applying unit 13, the corona processing unit 27, and the label sticking unit 26 described above are connected to the control unit 30. Operations of these elements are controlled by the control unit 30. The control unit 30 is a computer, for example, and has a storage unit (not shown). The storage unit stores a program for controlling various operations executed in the label sticking apparatus 10. The operation of each element described above is not limited to one control unit 30 and may be controlled by a plurality of control units.

  FIG. 4 shows a container 60 with a film manufactured using the film 50 with the label L attached in this manner. The film-equipped container 60 includes a container 40 such as a tray in which contents 41 such as food are stored, and a lid film 51 that seals the container 40. Among these, a label L is attached to a predetermined position of the lid film 51. The lid film 51 is produced by punching the film 50 into a predetermined shape in a container sealing device (not shown). In the present embodiment, the film 50 is used, for example, when sealing the opening of the container 40 filled with contents such as food, but is not limited thereto, and is used in various applications. It may be a film.

  Next, the effect | action (label sticking method) of this Embodiment which consists of such a structure is demonstrated using FIG. In addition, each following process is performed when the control part 30 controls each element which comprises the label sticking apparatus 10. FIG.

  First, the belt-like film 50 is unwound from the unwinding roll 23 of the film transfer unit 12. The film 50 is transferred along the transfer direction D (film transfer process). The tension of the film 50 thus transferred is adjusted to be substantially constant by the tension controller 33.

  The film 50 from the unwinding roll 23 is transferred along the transfer direction D and sent to the mark applying unit 13. In this mark provision part 13, the alignment mark M is provided for every predetermined interval with respect to the transferred film 50 (mark provision process). In this case, the mark providing unit 13 continuously measures the transport distance of the film 50 and prints the alignment mark M at every predetermined interval.

  Subsequently, the film 50 is transferred along the transfer direction D and sent to the corona treatment unit 27. In this corona treatment part 27, the part where the label L is stuck by the label sticking part 26 among the transferred films 50 is subjected to corona treatment in advance (corona treatment step). In the corona treatment unit 27, the surface of the film 50 is partially subjected to corona discharge treatment, and the wettability of this part is improved. At this time, a corona discharge is generated between the discharge electrode 35 and the counter electrode roll 36 by applying a high frequency voltage between the discharge electrode 35 and the counter electrode roll 36 of the corona treatment unit 27. The film 50 moves between the discharge electrode 35 and the counter electrode roll 36 to pass through the corona discharge, and the surface of the film 50 is subjected to corona treatment.

  Next, the film 50 is sent to the label attaching unit 26. In this label sticking part 26, the label L is stuck to the predetermined | prescribed area | region where the corona treatment of the transferred film 50 was carried out (label sticking process). In this case, since the surface of the film 50 is corona-treated, the label L can be firmly attached to the film 50. Note that the label L may be attached to the moving film 50, or the film 50 may be stopped intermittently and attached to the stopped film 50.

  During this time, when the label collecting roller 44 is driven in the label sticking section 26, the belt-like label 45 is guided by each guide roller 46, and proceeds from the label supply roller 42 side toward the label collecting roller 44 side. At this time, the label L is separated from the belt-like label 45 and attached to the film 50 by changing the transport direction of the belt-like label 45 by the peeling member 48 in the label peeling portion 43 (see FIG. 3). The release sheet 47 after the label L is peeled is collected by the label collection roller 44.

  Thereafter, the film 50 on which the label L is adhered at a predetermined interval is taken up by the take-up roll 24.

  The film 50 taken up by the take-up roll 24 is conveyed to a container sealing device (not shown). In this container sealing device, the film 50 is punched into a predetermined shape, and a lid film 51 is formed for each container 40. The lid film 51 is sealed to the opening of the container 40 by, for example, heat sealing, thereby producing a film-equipped container 60 (see FIG. 4).

  As described above, according to the present embodiment, the corona treatment unit 27 previously corona-treats the portion of the film 50 where the label L is adhered, and then the label adhesion unit 26 applies the label L to the film 50. Adhere. In this case, the corona treatment by the corona treatment part 27 and the sticking of the label L by the label sticking part 26 are performed in one label sticking apparatus 10. Thereby, the label L can be stuck immediately after corona-treating the film 50. For this reason, after the corona treatment, when the film 50 is transported or stored, foreign matter such as dust may adhere to the corona-treated portion, or the effect of the corona treatment may decrease with time. The label L can be attached to the film 50 with high adhesive strength.

  In addition, in the above, although the case where the label sticking apparatus 10 which sticks the label L to the film 50 was comprised separately from the container sealing apparatus was demonstrated as an example, it is not restricted to this, label sticking You may comprise the dressing apparatus 10 integrally with a container sealing device. In this case, the operation of sticking the label L to the film 50 and the operation of sealing the lid film 51 to the opening of the container 40 can be performed at one time by one apparatus.

DESCRIPTION OF SYMBOLS 10 Label sticking apparatus 12 Film transfer part 13 Mark provision part 23 Unwinding roll 24 Winding roll 25 Guide roller 26 Label sticking part 27 Corona treatment part 30 Control part 50 Film

Claims (5)

In a label sticking device that sticks a label to a film,
A film transfer section for transferring a belt-shaped film along the transfer direction;
Of the film transferred by the film transfer unit, a corona treatment unit that pre-corona-treats a place where the label is attached;
Provided on the downstream side in the transfer direction of the corona treatment unit, and a label attaching unit for attaching a label to the film transferred by the film transfer unit,
The label sticking apparatus, wherein the corona treatment part and the label sticking part are provided in one apparatus.   The label sticking apparatus according to claim 1, wherein the corona treatment unit performs corona treatment on the film continuously or intermittently.   The label sticking apparatus according to claim 1 or 2, further comprising a mark applying unit that applies alignment marks to the film transferred by the film transfer unit at a predetermined interval.   The label sticking part includes a label supply part that supplies a belt-like label, a label peeling part that peels the label away from the belt-like label and sticks it to the film, and a peel that is peeled away from the label among the belt-like labels. It has a label collection | recovery part which collect | recovers a sheet | seat, The label sticking apparatus as described in any one of the Claims 1 thru | or 3 characterized by the above-mentioned. In the label sticking method for sticking the label to the film,
A film transfer step of transferring the belt-shaped film along the transfer direction;
Of the transferred film, a corona treatment step for pre-corona-treating the place where the label is attached;
After the corona treatment step, a label sticking step for sticking a label to the transferred film,
The label sticking method, wherein the corona treatment step and the label sticking step are performed in one apparatus.

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