JP2004106462A - Plastic corrugated board case, and its manufacturing method and apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To disclose a plastic corrugated board case enabling image presentation to the whole plastic corrugated board case by an ink jet printer, and its manufacturing method and apparatus. <P>SOLUTION: The method for manufacturing the plastic corrugated board case is characterized in that (1) after a synthetic resin sheet subjected to color printing by an ink jet method is applied to the surface of the plastic corrugated board with a pressure sensitive adhesive or an adhesive, cutting along the external shape of a case and forming of a crease are carried out, and (2) the pressure sensitive adhesive or the adhesive applied to a cutting knife, a rotary knife and/or a vertically moving knife which carry out cutting along the external shape of the case is wiped off and/or the application of an anti-adhesive agent to the pressure sensitive adhesive or the adhesive is carried out. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a case (box) formed of cardboard made of plastics (abbreviated as a plastic step in this specification), and a method and an apparatus for manufacturing the case.
[0002]
[Prior art]
Plastics materials such as polypropylene, polyethylene, and polycarbonate are used to construct the plastic stage.However, it is difficult to print directly on these materials. Color printing is difficult. For this reason, a printing sheet is attached to decorate the surface of the plastic step with photographs, characters, designs, and the like.
[0003]
It is widely practiced to form various cases (boxes) with plastic steps (see Patent Literatures 1 and 2), and it relates to printability on the surface of the plastic steps, particularly, directly on the surface of the plastic steps. It is also known that printing is difficult (see Patent Document 3).
[0004]
[Patent Document 1] Japanese Patent Application Laid-Open No. 7-148867 [Patent Document 2] Japanese Patent Application Laid-Open No. 6-32346 [Patent Document 3] Japanese Patent Application Laid-Open No. 6-47774 [0005]
[Problems to be solved by the invention]
As mentioned above, the surface of the plastic step is decorated with photos, letters, designs, etc. by attaching a print sheet, but if you try to decorate the entire surface of the plastic step with color, a flat plastic step It is necessary to cut and fold the large-sized printing sheet on the surface (entire surface) of the sheet, and cut the fold according to the case outline. However, the adhesive or adhesive of the printing sheet adversely affects the cutting ability of the cutting blade. For this reason, it is difficult to adopt a method in which one continuous printing sheet is attached to all the six surfaces of the plastic case. For this reason, at present, the method of attaching a print sheet has to be a method of attaching a print sheet (smaller than the area of each surface of the plastic step) divided every six surfaces.
[0006]
Inkjet printers are very suitable for displaying photographs, characters and designs in color, but printing directly on the surface of a plastic plate has difficulties in terms of printing performance. One of the drawbacks of plastic corrugated paper is that it is easier to print on the surface of paper cardboard with an ink jet printer.
[0007]
A method of attaching a print sheet having an area smaller than the area of each surface to the six surfaces of the plastic case has already been adopted. However, this method has no problem in adopting depending on the type of the stored item (product), but is insufficient when the stored item (product) emphasizes the image (image) expression. I have to say it is a technique.
[0008]
Here, how to combine the superiority of the plastic corrugated board with respect to the cardboard made of paper and the superiority of the ink jet printer (particularly, a high degree of freedom in image expression) becomes an issue.
[0009]
Even if the above problems ultimately lead to improvements in color inks and printers that enable direct inkjet printing on the surface of the plastic step, it is only necessary to sit and improve inks and printers On the other hand, improvements in new color inks and printers are accompanied by new capital investment.
[0010]
SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to clarify a plastic case in which an image can be expressed on the entire surface of the plastic case by an inkjet printer, and a method and an apparatus for manufacturing the plastic case.
[0011]
[Means for Solving the Problems]
The present invention for solving the above problems has the following configuration.
1. A method for manufacturing a plastic step case, in which a synthetic resin sheet subjected to color printing by an ink jet method is attached to the surface of the plastic step with an adhesive or an adhesive, and then cut and formed along the case outer shape.
[0012]
2. The method according to the above, wherein the cutting blade, the rotary blade, and / or the vertical moving blade for cutting along the case outer shape are wiped with an adhesive or an adhesive and / or coated with an adhesive or an adhesion preventive agent. 2. The method for manufacturing a plastic case according to 1.
[0013]
3. An apparatus for manufacturing a plastic step case having a configuration in which a synthetic resin sheet subjected to color printing by an ink jet method is attached to the surface of the plastic step with an adhesive or an adhesive, and cuts and folds are formed along the outer shape of the case.
[0014]
4. It has a cutting blade, a rotary blade and / or a vertical moving blade for performing cutting along the case outer shape, and has a wiping unit and / or an anti-adhesion agent applying unit for the cutting blade, the rotary blade and / or the vertical moving blade. 4. The apparatus for manufacturing a plastic step case according to the item 3, wherein
[0015]
5. A plastic cardboard case characterized in that a synthetic resin sheet which has been subjected to color printing by an ink-jet method before sticking is attached to the surface of a plastic cardboard via an adhesive or adhesive layer.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
With reference to FIG. 1, a plastic case and a method of manufacturing the same according to the present invention will be schematically described.
[0017]
In the personal computer 10, patterns to be printed and displayed on the print sheet 30 by the inkjet printer 20 are recorded as a cutting line display 31 indicated by a dashed line and an exterior display region 32 indicated by a two-dot chain line. I have. The operator operates the personal computer 10 to create an exterior image by combining characters and photographic images mainly in the exterior display area 31 of the print sheet 30, output the image by the inkjet printer 20, and place the exterior image on the print sheet 30. Print the display. At this time, the cutting line display 31 does not necessarily have to be printed and displayed, but is preferably displayed for product inspection. As will be described later, the cutting / engraving device 50 cuts the plastic step 40 along the line of the cutting line display 31, but if the cutting line display 31 does not match the actual cutting line, it is determined that the cutting is defective. This is because it can be determined at a glance.
[0018]
The print sheet 30 on which the exterior display has been printed by the inkjet printer 20 is affixed to the surface of the plastic step 40 in a predetermined positional relationship, and cuts along the cutting line display 31 by the cutting and engraving device 50 and the fold line 33. Along the fold, a semi-finished product 60 is obtained. The semi-finished product 60 becomes a plastic step case as a product when the main body part and the glue margin or the overlap margin are folded along the fold line 33 and assembled.
[0019]
As shown in FIG. 2A, the printing sheet 30 has a pressure-sensitive adhesive layer or an adhesive layer 34 formed on the back surface side, and is covered with a release paper 35. In the case where the adhesive layer has an arrangement of dots, the release paper 35 is not necessary.) As a material of the printing sheet 30, various synthetic resin sheets are used, but there is no limitation as long as multicolor printing by the inkjet printer 20 is possible.
[0020]
Any known adhesives or adhesives may be used, and various types are selectively used depending on the types of the materials of the printing sheet 30 and the plastic step 40, and there is no particular limitation.
[0021]
However, generally used inkjet paper may have a significant effect on the performance of the cutting blade in the cutting process performed later. That is, even if the cutting is performed by any method such as a method using a rotary blade, a method using a vertical moving blade that moves continuously up and down, and a press method in which the cutting blade descends at a time, an adhesive or an adhesive Are easily attached to the cutting blade, and the cutting performance of the cutting blade is significantly reduced. For example, the adhesive or the adhesive adheres to the cutting blade and the plastic step 40 or the printing sheet 30, and a large load is applied to the driving of the cutting blade, or the printing sheet 30 adheres to the cutting blade. A situation such as tearing may also occur.
[0022]
The cutting and stamping device 50 according to the present invention is provided with a means for preventing the above-mentioned adverse effects of the pressure-sensitive adhesive or the adhesive.
[0023]
In the embodiment shown in FIG. 3A, a pair of wiping means 60 is arranged in the movement system of the cutting blade 51 which moves up and down. The wiping means 60 of this embodiment comprises a wiping member 61 made of various kinds of cloth, nonwoven fabric or felt, a housing 62 for accommodating the wiping member 61, and a pressing means 63 such as a spring for pressing in the direction of the cutting blade 51. Have been.
[0024]
The above embodiment includes a configuration in which the wiping member 61 is impregnated with a pressure-sensitive adhesive adhered to the surface of the cutting blade 51 or a chemical agent having a property of melting the adhesive.
[0025]
The embodiment shown in FIG. 3B has a configuration in which an anti-adhesive applying means 70 for preventing the adhesive or adhesive from adhering to the cutting blade 51 is separately provided together with the wiping means 60. As the anti-adhesion agent, various fluorine-based or silicone-based resins or oils can be used, and the adhesive or the adhesive has the property of preventing the adhesive or the adhesive itself from adhering to the cutting blade 51, but also adheres to the cutting blade 51. And a chemical agent having a property of melting an adhesive or an adhesive.
[0026]
FIG. 4 shows an example of the means for forming the fold line 33 shown in FIG. 1. In this embodiment, a stamping die 80 is laid on a flat base, and a printing sheet is placed at a predetermined position. After arranging 30, the female stamping die 81 is lowered. In the case where the engraving by the engraving male mold 80 is such that only the lower surface material of the plastic step 40 is deformed, the concave portion on the engraving female mold 81 side is unnecessary.
[0027]
The embodiment shown in FIG. 5 will be described. This aspect is applied to a case where a rotary blade 52 is used instead of the cutting blade 51 which moves up and down, and a wiping unit 60 for wiping an adhesive or an adhesive adhered to the rotary blade 52, An anti-adhesive applying means 70 for preventing adhesion of the adhesive or the adhesive is provided.
[0028]
Examples of the wiping means 60 include an embodiment using a scraper (peeling blade) in addition to the wiping member 61 using a cloth, a nonwoven fabric, or felt as shown in FIG. 3A. Further, as the anti-adhesion agent applying means 70, for example, a configuration is adopted in which the anti-adhesion agent is guided and supplied into the housing, and is transferred to the rotary blade 52 via the application section.
[0029]
The wiping unit 60 and the adhesion preventing agent applying unit 70 are disposed in the area a and the area b above the position L-L of the rotary blade 52 in which the rotary blade 52 bites into the plastic step, and only when the rotary blade 52 is driven for cutting. A mode in which the rotary blade 52 comes into contact with the rotary blade 52 and separates when stopped, and conversely, the rotary blade 52 separates from the rotary blade 52 during cutting driving in which the rotary blade 52 descends to the position of the plastic platen, and the rotary blade 52 performs an escape operation upward There is a mode in which it comes into contact with the rotary blade 52 when it is performed.
[0030]
The embodiment shown in FIG. 6 will be described. This embodiment is an example of a wiping unit 60 for a vertically movable blade 53 which is fixed to a flat frame (not shown). The drawing shows an example of disposition at a corner portion, in which the wiping member 61 is horizontally moved in synchronization with the vertical movement of the vertical blade 53. Specifically, when the vertical moving blade 53 descends and performs cutting, and then moves up, the pair of wiping members 61 operate in a direction to sandwich the vertical moving blade 53, and the vertical moving blade 53 moves upward. At the time when it comes out in the opening direction.
[0031]
In a portion where the vertical moving blades 53 are arranged in the horizontal direction or the vertical direction with respect to the plastic step 40, the wiping unit 60 operates in a direction perpendicular to the arrangement direction of the vertical moving blades 53 as shown by a virtual line. Array.
[0032]
The above-described embodiment is characterized in that the pair of wiping means 60 operating in the horizontal direction is divided and arranged in correspondence with the arrangement direction of the vertical moving blades 53. With such a configuration, in particular, it is possible to freely set the outer shape (cutting line) of the glue margin or the overlap margin where the inclination angle varies.
[0033]
The above-described embodiment includes a configuration in which the anti-adhesion agent application unit 70 is provided together with the wiping unit 60 as in the embodiment illustrated in FIG. 3 and the embodiment illustrated in FIG.
[0034]
【The invention's effect】
According to the first and fifth aspects of the present invention, it is possible to provide a beautiful full-color stepped plastic case by using an ink jet printer. In particular, according to the second and fourth aspects of the invention, When cutting the plastic sheet, the adhesive or adhesive used to attach the printing sheet can be prevented from adhering to the cutting blade and deteriorating the cutting function, so the printing performance of the plastic sheet surface noted above Can be eliminated, and restrictions due to the function and performance of the ink jet printer that enables direct printing on the surface of the plastic stage can be eliminated, which is effective in further increasing the demand for the plastic case.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a process of manufacturing a plastic case according to the method of the present invention. FIG. 2 is a cross-sectional view of a plastic stage and a printing sheet to which the present invention is applied. FIG. 3 is a diagram showing an embodiment of the present invention. FIG. 4 is a fragmentary cross-sectional view showing a fold forming process. FIG. 5 is a fragmentary perspective view showing another embodiment of the present invention. FIG. 6 is a fragmentary sectional view showing still another embodiment of the present invention. Perspective view [Description of symbols]
10-PC 20-Inkjet printer 30-Print sheet 31-Cutting line display 32-Exterior display area 33-Crease line (engraved)
40-plastic stage 50-cutting / marking device 51-cutting blade 52-rotating blade 53-vertical moving blade 60-wiping means 61-wiping member 62-housing 63-pressing means 70-adhesion preventing agent applying means 80- Male for stamping 81-Female for stamping

Claims (5)

A method of manufacturing a plastics cardboard case in which a synthetic resin sheet subjected to color printing by an ink-jet method is attached to the surface of a plastics cardboard with an adhesive or an adhesive, and then cut and formed along a case outer shape. . A method of wiping an adhesive or an adhesive and / or applying an antiadhesive to the cutting blade, the rotary blade and / or the vertical moving blade for performing cutting along the outer shape of the case. Item 4. A method for producing a plastics cardboard case according to Item 1. A plastic cardboard case having a configuration in which a synthetic resin sheet subjected to color printing by an ink jet method is attached to the surface of a plastics cardboard with an adhesive or an adhesive, and cuts and forms folds along the case outer shape. manufacturing device. It has a cutting blade, a rotary blade and / or a vertical moving blade for performing cutting along the outer shape of the case, and has a wiping unit and / or an anti-adhesion agent applying unit for the cutting blade, the rotary blade and / or the vertical moving blade. 4. The apparatus for manufacturing a plastics cardboard case according to claim 3, wherein: A plastic cardboard case characterized in that a synthetic resin sheet which has been subjected to color printing by an ink-jet method before sticking is attached to the surface of a plastic cardboard via an adhesive or an adhesive layer.

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