JP2018202831A - Laser processing device and packaging material - Google Patents

Abstract

To provide a laser processing device which can easily select a shape or the like of a label or the like on which variable information is printed, and provide a packaging material suitable for laser processing.SOLUTION: A label sheet is manufactured by irradiating a sheet base paper 2 with laser beams 11, printing characters or the like 12 indicating variable information such as a product name and best-before date, and forming a cut groove 13 in a label shape on the sheet base paper 2. A packaging material is formed by laminating a sheet-like base material, a printed layer which is formed on one surface of the base material and on which printing is carried out by irradiation of the laser beams, an adhesive layer formed on the other surface of the base material, and a packaging sheet for covering the adhesive layer.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a laser processing apparatus that performs printing processing and cutting processing by irradiating a printing sheet with laser light, and a packaging material suitable for processing by the laser processing apparatus.

  Labels on which variable information such as the product name, processing time, and expiration date is printed by a label printer or the like are attached to food items such as bread and lunch boxes handled in supermarkets (see, for example, Patent Document 1). .

  In general, a label manufacturer provides a roll-shaped label sheet in which a number of labels are temporarily attached to a release sheet to a product manufacturer such as a supermarket or a food processing center. Variable information such as the product name and expiration date is printed on the label of the sheet by a label printer or the like, and is pasted on the packaged food.

JP 11-034188

  As described above, conventionally, a label manufacturer provides a label sheet, and a product manufacturer prints variable information on a label of the provided label sheet and affixes it to a product such as a food product. However, the shape and size of the label cannot be arbitrarily selected, and a label sheet of a label having a desired shape or the like needs to be newly provided by the label manufacturer, which is inconvenient.

  Moreover, in a label maker, manufacturing many types of label sheets having different shapes and sizes for each product maker causes a reduction in production efficiency.

  An object of the present invention is to solve the above-mentioned problems by making it possible to easily select the shape and size of a label or the like on which information is printed.

  In order to achieve the above object, the present invention is configured as follows.

  (1) The laser processing apparatus of this invention is equipped with the laser processing means which cuts the said to-be-printed sheet while performing a printing process by irradiating a to-be-printed sheet with a laser beam.

  According to the laser processing apparatus of the present invention, the printing process is performed by irradiating the laser beam, and the cutting process is performed. Therefore, it is possible to obtain printing sheets having various shapes and sizes on which various types of information are printed. Labels with various shapes and sizes printed with can be produced.

  (2) In one embodiment of the present invention, the cutting process includes a process of cutting the printed sheet along its width direction.

  The process of cutting the printing sheet along the width direction may be a process of cutting over the entire width of the printing sheet, or over a part of the width direction, for example, an end or center in the width direction. The process which cuts a part may be sufficient. Further, in the case of performing the cut process over a part of the width direction of the printing sheet, the cutting process along the longitudinal direction of the printing sheet is also performed, and the cut end of the portion cut in the width direction and the longitudinal direction It is preferable to perform the cutting process so that the cut end of the part subjected to the cutting process is continuous.

  According to this embodiment, the cutting process of the printing sheet includes a process of cutting the printing sheet along the width direction thereof, and thus labels of various shapes and sizes obtained by cutting the printing sheet in the width direction. Etc. can be produced.

  (3) In a preferred embodiment of the present invention, the sheet to be printed is a sheet-like base material, a printed layer formed on one surface of the base material and printed by irradiation with the laser beam, It is a laminated sheet in which an adhesive layer formed on the other surface of the substrate and a release sheet covering the adhesive layer are laminated.

  According to this embodiment, the part which printed various information and cut-processed can be peeled off from a peeling sheet, and can be used as a label.

  (4) In another embodiment of the present invention, the cutting process is a process of cutting in a frame shape so as to surround a region of the printing layer to be printed.

  According to this embodiment, since the frame is cut so as to surround the area to be printed, variable information such as the expiration date or the address of the delivery destination is printed in the frame, and the portion in the frame is printed. For example, it can be used as a label or a delivery slip. In addition, it is possible to select a frame shape by cut processing and produce a label or delivery slip having a desired shape or size.

  (5) In another embodiment of the present invention, the laminated sheet has a portion cut into the frame shape and is peeled off from the release sheet and attached to an article to be attached. Between the adhesive layer and the pressure-sensitive adhesive layer, there is provided a destructive layer that causes cohesive failure when the substrate and the layer to be printed are peeled from the article to be adhered.

  According to this embodiment, when the frame-like part peeled from the release sheet is attached to the adherend article as a label or the like, and then the label or the like is peeled from the adherend article, the destruction layer causes cohesive failure. Wake up and peel at the part of the destructive layer. Accordingly, the label or the like can be easily peeled off, and sticking due to the adhesive can be prevented by covering the destruction layer in which the adhesive remaining on the adherend is coherently broken.

  (6) In a preferred embodiment of the present invention, the printing layer is a thermosensitive recording layer that develops color when irradiated with the laser beam.

  According to this embodiment, the heat-sensitive recording layer can be colored and printed by heat generated by laser light irradiation.

  (7) The packaging material of the present invention is a sheet-like base material, a printed layer formed on one surface of the base material and printed by irradiation with laser light, and the other surface of the base material. The formed adhesive layer and the packaging sheet which covers the said adhesive layer are laminated | stacked.

  According to the packaging material of the present invention, the necessary information, for example, information on the name of an article packaged by the packaging material and information on the handling of the article is printed on the layer to be printed by irradiating the laser beam, and the packaging By cutting the material into a size necessary for wrapping the article by irradiating a laser beam, a packaging material of a required size on which necessary information is printed can be obtained.

  Therefore, the packaging material of this invention is suitable for the process by the laser processing apparatus of this invention which performs a printing process and a cutting process by irradiation of a laser beam.

  (8) In another embodiment of the present invention, information on an article to be packaged by the packaging material is printed on the printed layer.

  According to this embodiment, the packaging material itself is printed with information on the article packaged by the packaging material, for example, information on the article name and handling of the article, for example, information such as “Caution on broken objects” and “useless on top and bottom”. Therefore, it is not necessary to stick a label or the like on which such information is printed to the packaging material.

  (9) In still another embodiment of the present invention, the information includes an address of a delivery destination to which the packaged article is delivered.

  According to this embodiment, since the address of the delivery destination to which the article packaged by the packaging material is delivered is printed on the packaging material itself, the address label or the delivery slip on which the delivery address is printed is wrapped. There is no need to stick to the material.

  (10) In a preferred embodiment of the present invention, a destructive layer is provided between the base material and the pressure-sensitive adhesive layer, which causes cohesive failure when the base material and the printing layer are peeled from the packaging sheet. .

  According to this embodiment, after an article is packaged and delivered by the packaging material on which the address of the delivery address is printed, the printed address part is peeled off from the packaging sheet and discarded, and then the cohesive failure occurs in the destruction layer. The addressed portion can be easily peeled off, and the adhesive layer remaining on the packaging sheet is covered with a cohesive failure layer to prevent stickiness due to the adhesive. be able to.

  According to the present invention, the printing process is performed by irradiating the laser beam, and the cutting process is performed, so that print sheets having various shapes and sizes on which various types of information are printed can be obtained. Labels with various shapes and sizes can be produced.

  As a result, for example, in a product manufacturer such as a supermarket or a food processing center, it is possible to arbitrarily select the shape and size of the label. The label sheet does not need to be newly provided by the label manufacturer, improving convenience.

FIG. 1 is a schematic configuration diagram of a laser processing apparatus according to an embodiment of the present invention. FIG. 2 is a view showing the sheet base paper of FIG. FIG. 3 is a schematic cross-sectional view of the sheet base paper of FIG. FIG. 4 is a diagram for explaining printing processing and cutting processing by a laser device. FIG. 5 is a view showing the label sheet of FIG. FIG. 6 is a view showing another shape of the cut groove. FIG. 7 is a view showing still another shape of the cut groove. FIG. 8 is a schematic cross-sectional view of a delivery slip sheet base paper. FIG. 9 is a diagram for explaining printing processing and cutting processing by a laser device. FIG. 10 is a schematic cross-sectional view of a packaging material according to an embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a laser processing apparatus 1 according to an embodiment of the present invention.

  The laser processing apparatus 1 of this embodiment is provided in a product manufacturer such as a supermarket or a food processing center. As described above, the product manufacturer receives a roll-shaped label sheet in which a large number of labels are temporarily attached to the release sheet from the label manufacturer, and the label of the label sheet includes the product name, price, Variable information such as the expiration date is printed, and the label is peeled off from the release sheet and attached to the packaged product.

  In this embodiment, a roll-shaped label sheet in which a large number of labels are temporarily attached to the release sheet is not provided by the label manufacturer, but as shown in FIG. A sheet base paper 2 is provided as a printing sheet on which a heat-sensitive recording layer 9 as a printing layer is formed.

  As shown in the schematic cross-sectional view of FIG. 3, the sheet base paper 2 has the heat-sensitive recording layer 9 as a printing layer on which variable information or the like is printed and recorded by a laser beam on a sheet-like substrate 8. The back surface of the substrate 8 is temporarily attached to the release sheet 6 via the pressure-sensitive adhesive layer 10.

  The base material 8 is not particularly limited, and may be paper, a resin film, or a composite base material obtained by laminating them, and various base materials used as base materials for conventional tack paper and the like are used. Can do.

  The heat-sensitive recording layer 9 is colored by the heat of laser light and is made of the same material as that of the conventional heat-sensitive recording layer. That is, the heat-sensitive recording layer 9 is configured by applying and drying a paint in which a developer, a leuco dye, and the like are dispersed in a binder.

  As the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 10, various pressure-sensitive adhesives used for conventional tack paper and the like can be used.

  As the release sheet 6, a conventionally known release paper or release film can be used.

  As shown in FIG. 1, the laser processing apparatus 1 of this embodiment applies laser light 11 to a roll base paper 2 that is fed from a roll-shaped sheet base paper 2 and conveyed via a pair of upstream rollers 22. A laser device 3 is provided as a laser processing means for performing a printing process for irradiating and printing variable information and performing a cutting process for cutting the periphery of the printed region into a frame shape.

  The printing process and the cutting process by the laser device 3 may be performed while the sheet base paper 2 is being transported, or may be performed while the transport of the sheet base paper 2 is once stopped.

This laser device 3 includes a laser oscillator composed of a CO ₂ laser, a YAG laser, etc., a beam expander that adjusts the beam diameter of the laser beam, a reflection mirror, a galvano scanner that scans the laser beam, the output of the laser oscillator and the laser beam And a control unit for controlling the conveyance of the sheet base paper 2 and an operation unit for inputting and displaying various settings.

  The laser device 3 irradiates the sheet base paper 2 with laser light 11 along a shape such as numbers and characters representing variable information such as preset product names and expiration dates. As a result, the irradiated portion of the laser beam 11 on the heat-sensitive recording layer 9 of the sheet base paper 2 is colored by the heat of the laser beam 11, and characters 12 representing variable information are printed as shown in FIG.

  Further, the laser device 3 irradiates the laser beam 11 with an increased laser output and forms a cut groove 13 along a predetermined shape such as a rectangle so as to surround the area where the variable information is printed. Process. The cut groove 13 is formed to a depth that does not cut the release sheet 6 of the sheet base paper 2. As a result, a rectangular label 14 surrounding the area where variable information is printed by the frame-shaped cut groove 13 is formed.

  The laser device 3 forms a number of labels 14 along the longitudinal direction of the sheet base paper 2 by alternately repeating the variable information printing process and the cutting process surrounding the printed area on the sheet base paper 2. To do.

  As described above, in the laser processing apparatus 1 of the present embodiment, the step of irradiating the sheet base paper 2 with the laser beam and performing the printing process and the step of cutting the sheet base paper 2 are performed. The printing process and the cutting process of the label 14 may be performed first. After the cutting process for forming the frame-shaped cut groove 13 is performed, variable information or the like may be printed in the frame. Good.

  The sheet base paper 2 on which a large number of labels 14 are partitioned as described above is removed by unwinding the unnecessary label residue 15 outside the cut groove 13 with the label residue take-up roll 4 shown in FIG. By removing the label residue 15, as shown in FIG. 5, a large number of labels 14 become the label sheet 5 temporarily attached to the release sheet 6, and are wound up in a roll shape via a pair of downstream rollers 23. .

  In this way, a label sheet 5 on which a large number of labels 14 printed with characters 12 indicating variable information such as product names and expiration dates are temporarily attached is obtained. The label 14 is peeled off from the release sheet 6 and attached to a packaged product such as a food product.

  Since the laser processing apparatus 1 performs the printing process and the cutting process on the sheet base paper 2 as described above, the length of the width direction of the sheet base paper 2 is limited as well as the contents of variable information to be printed. The shape and size of the label 14 can be arbitrarily selected.

  As a result, various labels according to the sizes and the like of various products can be easily produced by the product manufacturer without receiving any provision from the label manufacturer. Further, the shape of the label may be, for example, a star shape or a heart shape to exhibit a design effect.

  Further, the cut groove 13 is not limited to the shape cut into the frame shape as described above, and for example, as shown in FIG. 6, the cut groove 13 has a shape that cuts the entire width along the width direction of the sheet base paper 2. There may be. Alternatively, as shown in FIG. 7, at least one end in the width direction of the sheet base paper 2, in this example, at both ends in the width direction of the sheet base paper 2, the cut grooves 13 are formed along the width direction, The cut grooves 13 are formed along the longitudinal direction of the sheet base paper 2 so as to be connected to the cut ends of the cut grooves 13 in the width direction, and both end portions in the width direction of the sheet base paper 2 are cut so as to be cut into, for example, a rectangle. It may be a shape.

  The laser processing apparatus of the present invention is applicable not only to commodity labels such as the above-mentioned food products but also to address labels, delivery slips, and the like.

  FIG. 8 is a cross-sectional view corresponding to FIG. 3 of the sheet base paper 2a for the delivery slip, and parts corresponding to FIG.

  In the delivery slip, personal information such as the address, name, and telephone number of the delivery destination is printed, and the delivery slip is attached to the delivery target article that is the article to be attached and delivered. After delivery, the delivery slip is peeled off from the delivery object and discarded so that personal information is not illegally used.

  In the sheet base paper 2a for the delivery slip of this embodiment, the base material 8 is an article to be adhered between the base material 8 and the adhesive layer 10 so that the delivery slip after delivery can be easily peeled off. A destructive layer 16 is provided that cohesively breaks when it is peeled from an article to be delivered. The fracture layer 16 causing the cohesive failure is made of the same material as that of a conventionally known cohesive failure layer.

  In the delivery slip sheet base 2a, as shown in FIG. 9, the laser processing apparatus 1 prints the address 12a such as the address, name, etc., as shown in FIG. The delivery slip 7 is sectioned by cutting processing to form 13a.

  In the sheet base paper 2a on which the delivery slip 7 is formed, an unnecessary label residue 15a outside the cut groove 13a is removed, and a delivery slip sheet having a large number of delivery slips 7 stuck on the release sheet 6 is obtained. .

  From this delivery slip sheet, the delivery slip is peeled off and attached to the delivery target article for delivery.

  At the delivery destination, the delivery slip is peeled off from the delivery target article. At this time, since the destruction layer 16 is formed between the pressure-sensitive adhesive layer 10 and the base material 8 on the sheet base paper 2a as described above, a delivery slip on which a destination or the like is printed from the delivery target article is displayed. At the time of peeling, cohesive failure occurs in the breaking layer 16, and peeling occurs at the portion of the breaking layer 16. Accordingly, the delivery slip can be easily peeled off, and sticking due to the adhesive can be prevented by covering the adhesive layer remaining on the delivery target article with the destructive layer formed by cohesive failure.

  Next, a description will be given of a packaging material suitable for being subjected to printing processing by laser light irradiation and cut processing into a required shape.

  FIG. 10 is a schematic cross-sectional view of a packaging material according to an embodiment of the present invention, and parts corresponding to those in FIG.

  The packaging material 17 of this embodiment is, for example, a packaging material suitable for packaging and delivering an article to be delivered, and the width of the sheet base paper is larger than that of the label or delivery slip, and articles of various sizes. It can be used for packaging.

  In the packaging material 17 of this embodiment, the pressure-sensitive adhesive layer 10 is bonded not to the release sheet 6 but to a thin cardboard sheet 18 as a packaging sheet. This corrugated cardboard sheet 18 has a known structure in which a corrugated continuous core 21 is disposed between upper and lower surface materials 19 and 20.

  The packaging material 17 is provided with a thin corrugated cardboard sheet 18 as a packaging sheet on the back surface side, and a thermal recording layer 9 that can be printed by laser light irradiation on the front surface side. The packaging material 17 is subjected to a printing process such as a destination address and name by irradiating a laser beam in the same manner as the label and the like, and a frame corresponding to a delivery slip so as to surround the printing area. A first cut process for forming a cut groove in a shape is performed, and further, a second cut process for cutting to the size of the packaging material necessary for packaging the delivery target article is performed.

  As a result, a packaging material of a required size on which a delivery slip including a destination is printed is obtained.

  Thus, since the delivery slip including the destination is directly printed on the packaging material 17, it is not necessary to affix the delivery slip, the address label, etc., and the packaging work can be simplified.

  In addition, when the size of the packaging material necessary for packaging the delivery target article is small, the first cutting process for forming the cut groove in a frame shape so as to surround the printing region may be omitted. .

  The heat-sensitive recording layer 9 on the front surface side of the packaging material 17 is not limited to information such as the address for delivery, and for example, information such as the name of the article to be packaged and notes regarding handling of the article may be printed.

  Furthermore, a design effect or advertisement information may be printed on the heat-sensitive recording layer 9 on the surface side of the packaging material 17 to produce an advertising effect.

  The packaging sheet on the back side of the packaging material 17 is not limited to a corrugated cardboard sheet, and may be, for example, a bubble cushioning sheet, or a combination thereof.

  The printing layer is not limited to the heat-sensitive recording layer 9 as long as it can be printed by laser light irradiation. For example, a colored layer such as black is formed on a base material, and becomes transparent by heat on the colored layer. A resin particle layer may be formed, and the resin particle layer may be transparently printed by irradiation with laser light. Alternatively, a colored layer may be formed on a substrate, and this coloring may be performed by laser light irradiation. It may be one that removes the layer and performs printing in comparison with the color of the underlying substrate.

  The sheet base papers 2 and 2a and the packaging material 17 are not limited to the configurations shown in FIGS. 3, 8, and 10, and other layers may be provided. For example, a transparent protective layer is provided on the thermosensitive recording layer. It may be formed.

1 Laser processing equipment 2, 2a Sheet base paper (sheet to be printed)
3 Laser equipment (Laser processing means)
4 Label waste roll 5 Label sheet 6 Release sheet 7 Delivery slip 8 Base material 9 Thermal recording layer (printed layer)
10 Adhesive Layer 11 Laser Light 14 Label 17 Packaging Material

Claims (10)

A laser processing unit that irradiates a printing sheet with laser light and performs a printing process, and includes a laser processing unit that cuts the printing sheet,
The laser processing apparatus characterized by the above-mentioned. The cutting process includes a process of cutting the sheet to be printed along its width direction.
The laser processing apparatus according to claim 1. The printed sheet was formed on a sheet-like substrate, a printed layer formed on one surface of the substrate, and printed by irradiation with the laser light, and formed on the other surface of the substrate. It is a laminated sheet in which an adhesive layer and a release sheet covering the adhesive layer are laminated,
The laser processing apparatus according to claim 1. The cutting process is a process of cutting into a frame shape so as to surround the periphery of the area to be printed of the printing layer,
The laser processing apparatus according to claim 3. The laminated sheet has a portion cut into the frame shape and is peeled off from the release sheet and attached to an article to be attached.
Between the base material and the pressure-sensitive adhesive layer, when the base material and the printing layer are peeled off from the article to be adhered, a breaking layer that cohesively breaks down is provided.
The laser processing apparatus according to claim 4. The printing layer is a heat-sensitive recording layer that develops color when irradiated with the laser beam.
The laser processing apparatus according to claim 3.   A sheet-like base material; a printing layer formed on one surface of the base material and printed by irradiation with laser light; an adhesive layer formed on the other surface of the base material; A packaging material, characterized in that a packaging sheet covering a preparation layer is laminated. In the printed layer, information about an article to be packaged by the packaging material is printed.
The packaging material according to claim 7. The information includes an address of a delivery destination to which the packaged article is delivered,
The packaging material according to claim 8. Between the base material and the pressure-sensitive adhesive layer, the base material and the layer to be printed are provided with a destructive layer for cohesive failure when peeling from the packaging sheet.
The packaging material according to any one of claims 7 to 9.

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