JP6683507B2 - How to control the production of workpieces using labels - Google Patents

Description

  The present invention relates to a label that can be attached to a container of an article, and a method for controlling production of a processed product using the label.

In a factory that produces processed products (eg, processed foods), in order to manage the inventory of raw materials, information about the raw materials (eg, the name of the raw material) is printed on the delivered raw material container (eg, plastic bag). Label (see, for example, Patent Document 1) is attached.
The label attached to the container is required to have a strong adhesive force in order to prevent the label from being separated from the container and being mixed with the raw material.
Further, in such a factory, it is difficult to handle the container carefully, and a large amount of water is used, so that the label attached to the container is required to have durability and water resistance.
Therefore, the label used in such a factory includes a synthetic resin film having excellent durability and water resistance, and a strong adhesive layer.

JP, 2000-141775, A

However, the synthetic resin film has a property of elastically deforming. Therefore, when the container is deformed when the raw materials are taken out from the container, the label attached to the container tends to return to its original shape. When the elastic deformation force of the label is larger than the adhesive force of the label, a part of the label is peeled off from the container, so that the contact area between the label and the container is reduced. When the contact area is reduced, the label easily peels from the container. In particular, in the case of a highly flexible container (for example, a plastic bag), the container is easily deformed, so that the label attached to the container is more easily peeled off. Therefore, in the process of processing the raw material, the label may be mixed with the raw material or the processed food.
Therefore, it is necessary for the food factory to inspect whether or not the label is mixed in the processed food.

  An object of the present invention is to suppress the peelability of a label having excellent durability and water resistance, and to control the production of a label that can be detected even if it is mixed in a workpiece, and a workpiece that uses the label. Is to provide a method.

The first aspect of the present invention is
A label that can be attached to an article container,
A strong adhesive layer,
A metal foil laminated on the strong adhesive layer,
A synthetic resin film laminated on the metal foil,
It is a label provided with.

A second aspect of the present invention is
A label that can be attached to an article container,
A strong adhesive layer,
A metal foil laminated on the strong adhesive layer,
A waterproof paper laminated on the metal foil,
It is a label provided with.

A third aspect of the present invention is a method for controlling the production of a workpiece using the label,
Attaching the label to the container,
Removing the article from the container,
Processing the retrieved article to obtain a processed product,
A metal detector for inspecting whether a metal is mixed in the work piece, a step of inspecting whether the label is mixed in the work piece,
Including the method.

A fourth aspect of the present invention is a method for controlling the production of a workpiece using the label,
Removing the article from the container,
Processing the retrieved article to obtain a processed product,
When there is an abnormality in the processed product, a step of attaching the label to the processed product,
A metal detector for inspecting whether or not a metal is mixed in the workpiece, a step of inspecting whether or not the label is attached to the workpiece,
Including the method.

  According to the present invention, it is possible to suppress the peelability of a label excellent in durability and water resistance, and detect the label even if it is mixed in a processed product.

Sectional drawing of the label of 1st Embodiment. The figure which shows an example of the information printed on the printing surface of the label of FIG. 2 is a flow chart of a method of managing production of a work piece using the label of FIG. Explanatory drawing of the flowchart of FIG. Sectional drawing of the label of 2nd Embodiment. The figure which shows the 1st example of the adhesive surface of 3rd Embodiment. The figure which shows the 2nd example of the adhesive surface of 3rd Embodiment. The figure which shows the 3rd example of the adhesive surface of 3rd Embodiment. The figure which shows the 4th example of the adhesive surface of 3rd Embodiment.

  An embodiment of the present invention will be described in detail below with reference to the drawings. In addition, in the drawings for describing the present embodiment, the same components are denoted by the same reference symbols in principle, and repeated description thereof will be omitted.

(1) First Embodiment A first embodiment of the present invention will be described.

(1.1) Label Configuration The label configuration of this embodiment will be described. FIG. 1 is a sectional view of the label according to the first embodiment. FIG. 2 is a diagram showing an example of the printing surface of the label of FIG. FIG. 2 is a diagram showing an example of information printed on the printing surface of the label of FIG.

  As shown in FIG. 1, the label 10 includes a heat sensitive layer 12, a synthetic resin film 14, a metal foil 16, and a strong adhesive layer 18.

The heat sensitive layer 12 is laminated on the synthetic resin film 14. Of both surfaces of the heat-sensitive layer 12, the surface (hereinafter referred to as “front surface”) of the label 10 on the front side (F side in FIG. 1) corresponds to the print surface 10 a of the label 10. The heat-sensitive layer 12 develops a specific color (for example, black) at a predetermined temperature. The thickness of the heat sensitive layer 12 is 10 to 25 (for example, 18) μm.
The label 10 is used in a printer equipped with a thermal head. The heat-sensitive layer 12 develops color when heated by a thermal head. As a result, as shown in FIG. 2, information (for example, the text TX and the barcode BC) is printed on the printing surface of the label 10.

The synthetic resin film 14 is laminated on the metal foil 16. The thickness of the synthetic resin film 14 is 16 to 200 (for example, 80) μm. The synthetic resin film 14 is a member that is excellent in durability and water resistance and has a property of elastically deforming.
The synthetic resin film 14 is, for example, a polyolefin resin (polyethylene resin or polypropylene resin), polyethylene terephthalate (PET) resin, polystyrene resin, polycarbonate resin, vinyl chloride resin (polyvinyl chloride or chlorinated polyvinyl chloride), or a resin thereof. It is a film-shaped member in which a pigment (for example, a white pigment) is mixed in a combination.
Examples of the synthetic resin film 14 include synthetic paper (for example, YUPO (registered trademark) containing polypropylene as a main component), white PET, or recycled PET.

The metal foil 16 is laminated on the strong adhesive layer 18. “Metal foil” is a metal layer having a thickness of 1 to 50 (eg, 7) μm. The metal foil 16 is, for example, an aluminum foil made of aluminum, a copper foil, an iron foil, or an alloy thereof. The metal foil 16 has a property of being plastically deformed by a force larger than the elastic deformation force of the synthetic resin film 14. For example, when the label 10 is attached to an object (a container PA described later), the label 10 may be deformed. The elastic deformation force of the synthetic resin film 14 acts as a force for restoring the shape of the label 10. On the other hand, since the metal foil 16 is plastically deformed with a force larger than the elastic deformation force of the synthetic resin film 14, the restoration of the shape of the label 10 is suppressed. As a result, the shape of the label 10 after deformation is maintained.
The metal foil 16 is bonded to the synthetic resin film 14 and the strong pressure-sensitive adhesive layer 18 with an adhesive, for example.

The strong pressure-sensitive adhesive layer 18 has a “180 ° peeling adhesion to a stainless steel test plate” defined by JIS Z1538 and Z0237 of 5880 mN / 25 mm or more. The thickness of the strong adhesive layer 18 is 10 to 25 (eg, 17) μm.
The pressure-sensitive adhesive is, for example, an emulsion pressure-sensitive adhesive, a solvent pressure-sensitive adhesive, or a hot melt pressure-sensitive adhesive. In particular, the emulsion pressure-sensitive adhesive does not contain substances that adversely affect the environment (for example, toluene, thinner, etc.) and is inexpensive. Therefore, it is preferable that the strong adhesive layer 18 is coated with an emulsion adhesive.

(1.2) Method of managing production of processed product A method of managing production of processed product using the label of the present embodiment will be described. FIG. 3 is a flowchart of a method for managing production of a work piece using the label of the present embodiment. FIG. 4 is an explanatory diagram of the flowchart of FIG.
In addition, below, the management method in the case of producing a processed food (an example of a processed product) by processing a raw material (an example of an article) will be described.

As shown in FIGS. 3 and 4, first, the printer PRT prints information on the raw material MA (for example, vegetables) (hereinafter referred to as “raw material information”) on the label 10 (S100).
Specifically, when the label 10 is set on the printer PRT, the printer PRT conveys the set label 10. When the conveyed label 10 is heated by the thermal head, the text TX indicating the raw material information and the barcode BC are printed on the printing surface of the label 10. The raw material information is, for example, the name of the raw material, the producer of the raw material, the place of production of the raw material, and the quantity of the raw material.

  Next, the operator attaches the label 10 on which the raw material information regarding the raw material MA is printed to the container PA in which the raw material MA is stored (S102). The container PA is, for example, a bag, a box, or a packing material. The material of the container PA is, for example, vinyl or plastic.

Next, the operator takes out the raw material MA from the container PA to which the label 10 is attached (S104).
Specifically, the operator opens the container PA, takes out the raw material MA from the container PA, and puts the taken out raw material MA into the cooking utensil CW (for example, a pot). At this time, at least a part of the label 10 may be mixed with the raw material MA in the cookware CW.

Next, the operator processes the raw material MA taken out from the container PA (S106).
Specifically, the worker processes the raw material MA using the cooking utensil CW (for example, the raw material MA is boiled using a pot). Thereby, the processed food PR is obtained. The obtained processed food PR is conveyed to the metal detector MD by, for example, a belt conveyor.

Next, the metal detector MD inspects the processed food PR (S108).
In a food factory, a metal detector MD is used to detect a metal (for example, a piece of cookware) mixed in the processed food PR. In S108, not only the metal but also the label 10 is detected using the metal detector MD.
Specifically, the metal detector MD includes a transport belt TB, a detection unit DU, and a display DSP. The processed food PR conveyed by the belt conveyor is conveyed by the conveyor belt TB toward the tunnel below the detection unit DU. The detection unit DU includes a sensor that detects a change in the magnetic field in the tunnel. Since the label 10 includes the metal foil 16, when the processed food PR in which at least a part of the label 10 is mixed passes through the tunnel, the magnetic field inside the tunnel changes. When the sensor of the detection unit DU detects this change in the magnetic field, the detection unit DU detects the metal contained in the processed food PR.

  The detection unit DU may include a plurality of sensors. Each of the plurality of sensors may be provided to face a plurality of angles. In this case, the change in the magnetic field in the tunnel is easily detected regardless of the direction of the processed food PR placed on the transport belt TB. Therefore, the accuracy of detection of the label 10 by the metal detector MD can be improved.

When detecting the metal (S110: YES), the metal detector MD warns that the processed food PR contains the metal (S112).
Specifically, the detection unit DU displays a warning message (for example, a text message “ALARM”) on the display DSP. When the warning message is displayed, the worker removes the processed food PR from the production line.

  On the other hand, when the metal detector MD does not detect the metal (S110: NO), the worker ships the processed food PR as a product (S114).

(1.3) Summary of the present embodiment In the present embodiment, the label 10 that can be attached to the container PA of the raw material MA (an example of an article) is laminated on the strong adhesive layer 18 and the strong adhesive layer 18. A metal foil 16 and a synthetic resin film 14 laminated on the metal foil 16 are provided.
Further, in the present embodiment, the metal foil 16 may be an aluminum foil.
In this way, since the label 10 includes the metal foil 16 (for example, aluminum foil), even if the container PA is deformed when the article is taken out from the container PA, the metal foil 16 is plastically deformed to match the shape of the container PA. The label 10 is also deformed. As a result, the contact area between the label 10 and the container PA is maintained. Thereby, the peelability of the label 10 having excellent durability and water resistance can be suppressed.
Further, since the label 10 includes the metal foil 16, the label 10 is mixed in the processed food PR using the metal detector MD for detecting the metal contained in the processed food PR (an example of the processed product). It is possible to detect whether or not there is. Therefore, it is possible to reduce the work load of the inspection of whether the label 10 is mixed in the processed food PR, and to reliably prevent the shipment of the processed food PR in which the label 10 is mixed.

In this embodiment, the strong adhesive layer 18 preferably contains an emulsion adhesive.
In general, emulsion adhesives are cheaper than other adhesives. On the other hand, when the thickness of the metal member (eg, aluminum layer) is less than 1 μm (that is, the thickness of the metal member is thinner than the metal foil 16), the emulsion adhesive can be used to make the metal member translucent. There is a nature. This impairs the aesthetic appearance of the label 10 and is not preferable. However, in the present embodiment, since the thickness of the metal foil 16 is 1 μm or more, the strong pressure-sensitive adhesive layer 18 can be realized by using an inexpensive emulsion pressure-sensitive adhesive without impairing the appearance.

In the present embodiment, a method of managing the production of processed foods using the label 10 includes a step of attaching the label 10 to the container PA (S102), a step of taking out the raw material MA from the container PA (S104), and a step of taking out the raw material MA. The step (S106) of processing the processed raw material MA to obtain the processed food PR, and the metal detector MD for inspecting whether the processed food PR is mixed with metal or not, the processed food PR is labeled with the label 10. And a step of inspecting whether or not they are mixed (S108).
Therefore, it is possible to detect whether or not the label 10 is mixed in the processed food PR by using the metal detector MD.

(1.4) Modification of this Embodiment In this embodiment, the label 10 before being attached to the container PA may be temporarily attached to a release paper. The release paper is glassine paper, for example. The release paper has a thickness of 50 to 60 (eg, 55) μm.

  In this embodiment, the heat sensitive layer 12 is not essential. The present embodiment is also applied to a label that does not have the heat-sensitive layer 12 (that is, the front surface (F side in FIG. 1) of both surfaces of the synthetic resin film 14 corresponds to the print surface of the label 10). It is possible. In this case, the information is printed by, for example, a thermal transfer printer using an ink ribbon, an inkjet printer, an electrophotographic printer, or the like.

  In the present embodiment, the step of printing the raw material information on the label 10 (S100 in FIG. 3) and the step of sticking the label 10 on which the raw material information is printed on the container PA (S102) are not essential.

  In the first example of the management method not including S100 and S102, the label 10 on which the raw material information is printed is affixed to the container PA in advance. Then, in S104, the raw material MA may be taken out from the container PA.

  In the second example of the management method not including S100 and S102, when the worker finds an abnormality in the processed food PR in S106, the label 10 on which the information indicating the abnormality is printed is processed food PR, or 1 or It may be attached to a container containing a plurality of processed foods PR. In this case, in S108 to S112, when the metal detector MD detects the attached label 10, the metal detector MD displays information indicating an abnormality on the display DSP. Thereby, the abnormal processed food PR can be easily removed from the production line.

  In the present embodiment, an example in which the processed product is the processed food PR has been described, but the processed product is not limited to this. For example, the processed product may be a drug ingested by humans or animals.

  In this embodiment, the label 10 including the heat sensitive layer 12 and the synthetic resin film 14 as different layers has been described, but the label 10 is not limited to this. For example, the label 10 may include a layer in which the heat-sensitive layer 12 and the synthetic resin film 14 are integrated, instead of the heat-sensitive layer 12 and the synthetic resin film 14.

In the present embodiment, the example in which the layer laminated on the metal foil 16 is the synthetic resin film 14 is shown, but the layer laminated on the metal foil 16 is not limited to this.
As an example, the layer laminated on the metal foil 16 may be waterproof paper or laminated paper. The waterproof paper is a paper impregnated with a resin (for example, polyethylene resin). Laminated paper is paper coated with a film. When waterproof paper or laminated paper is laminated on the metal foil 16, printing on the label 10 is performed by a thermal transfer method. In the case of the thermal transfer method, the heat sensitive layer 12 is unnecessary.

(2) Second Embodiment A second embodiment of the present invention will be described.

(2.1) Label Configuration The label configuration of the present embodiment will be described. FIG. 5: is sectional drawing of the label of 2nd Embodiment.

As shown in FIG. 5, the metal of the first embodiment is that the front surface (F side in FIG. 5) 26a and the back surface (B side in FIG. 5) 26b of the metal foil 26 of the label 20 have irregularities. Different from foil 16 (FIG. 4).
The unevenness of the metal foil 26 has a curved surface. The unevenness having the curved surface is formed by embossing.
On the other hand, the surfaces on both sides of the heat sensitive layer 12, the synthetic resin film 14, and the strong adhesive layer 18 are flat.

(2.2) Summary The detection accuracy of the label 10 by the metal detector MD of this embodiment depends on the orientation of the label 10 mixed in the processed food PR. However, the orientation of the label 10 mixed in the processed food PR is not always uniform. Moreover, when the label 10 is attached to the processed food PR or the container containing the processed food PR as in the second example of the management method not including S100 and S102, the orientation of the attached label 10 is one. It doesn't always happen. On the other hand, in the present embodiment, since the metal foil 26 has the unevenness, the label 10 can be detected by the metal detector MD regardless of the orientation of the label 10.

(3) Third Embodiment A third embodiment of the present invention will be described. In the third embodiment, an example of the pattern of the adhesive applied to the adhesive surface 10b will be described.

FIG. 6 is a diagram showing a first example of the adhesive surface of the third embodiment.
As shown in FIG. 6, the adhesive surface 10b of the first example includes four non-adhesive regions 18a, a plurality of non-adhesive regions 18b, and a plurality of adhesive regions 18c.
Each of the four non-adhesive regions 18a is a triangular region including the four corners of the adhesive surface 10b.
Rectangular non-adhesive regions 18b and adhesive regions 18c are alternately formed in regions of the adhesive surface 10b other than the non-adhesive regions 18a.

FIG. 7: is a figure which shows the 2nd example of the adhesive surface of 3rd Embodiment.
As shown in FIG. 7, in the adhesive surface 10b of the second example, the sizes of the non-adhesive areas 18b and the adhesive areas 18c are smaller than those in the first example (FIG. 6) (that is, the number of the non-adhesive areas 18b and the adhesive areas 18c). Is larger than in the first example).

FIG. 8: is a figure which shows the 3rd example of the adhesive surface of 3rd Embodiment.
As shown in FIG. 8, the adhesive surface 10b of the third example is different from the first example and the second example in that the plurality of non-adhesive regions 18b are circular and the adhesive regions 18c are continuous. different.

FIG. 9: is a figure which shows the 4th example of the adhesive surface of 3rd Embodiment.
As shown in FIG. 9, the adhesive surface 10b of the fourth example is different from the third example in that one circular non-adhesive region 18b is formed in the approximate center of the adhesive surface 10b.

In any of the first to fourth examples described above, the non-adhesive region 18a is a triangular region including the four corners of the adhesive surface 10b, so that the operator easily peels the label 10 from the release paper in S102. Can be made.
Further, in any of the first to fourth examples described above, since the total area of the adhesive region 18c is sufficiently large, peeling of the label 10 attached to the container PA can be suppressed.

  Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited to the above embodiments. Further, the above-described embodiment can be variously modified and changed without departing from the gist of the present invention. Further, the above-described embodiments and modified examples can be combined.

10, 20: Label 12: Thermosensitive layer 14: Synthetic resin film 16, 26: Metal foil 18: Strong adhesive layer BC: Bar code TX: Text CW: Cookware MA: Raw material PA: Container PR: Processed food PRT: Printer MD: Metal detector DSP: Display DU: Detection unit TB: Conveyor belt

Claims (1)

Production of a processed product using a label attachable to a container of an article provided with a strong adhesive layer, a metal foil laminated on the strong adhesive layer, and a synthetic resin film laminated on the metal foil. Is a method of managing
Attaching the label to the container,
Removing the article from the container,
Processing the retrieved article to obtain a processed product,
A metal detector for inspecting whether a metal is mixed in the work piece, a step of inspecting whether the label is mixed in the work piece,
Including the method.

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