JP3678342B2 - bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to bags such as envelopes, medicine bags, packaging paper, synthetic paper, and synthetic resin.
[0002]
[Prior art]
Printing is often performed on the surface of this type of bag by a printer. In the case of a paper bag for printer printing, a paper thickness of 165 to 170 μm is conventionally used. Moreover, the bag affixing structure shown in FIGS. 5 and 6 is generally used.
[0003]
Referring to FIGS. 5 and 6, the bag attachment structure will be schematically described. Folded sheets are folded at the two-folded portion 100, and one of the stacked sheets is overlapped at the opposite side 200 of the two-folded portion 100. The margin 210 formed by folding is bonded to the margin 210 and the overlapping portion 220 of the other sheet. Similarly, the bottom portion 300 is bonded to the margin 310 and the overlapping portion 320 of the other sheet.
[0004]
As shown in FIG. 7, when the bags 101 are stacked and set on the paper feed tray 900 and fed to the printer with rollers (not shown), the front and back surfaces overlapped on the opening side 400 (see FIG. 5) of the bag. Since the sheet is easy to separate, rigid at the bottom 300, difficult to separate, and unbalanced, the roller cannot feed the bag, even if it can be fed, it can be fed diagonally, paper jams, etc. Even if succeeded, there was a problem that wrinkles were formed on the front sheet, resulting in unclear printing.
[0005]
[Problems to be solved by the invention]
The present invention solves the above-described problems, and provides a bag that can be fed smoothly and can be printed clearly without causing troubles in automatic feeding by a printer.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention folds a bag sheet and bonds both sides of the overlapped portion, and sets the folded portion as a bottom portion and an opening portion on the opposite side as a bottom, and is fed by a printer feed roller. in envelope-type bags performing paper to print a bonding agent bonding glue adhesive portion of the both sides, the adhesive application pattern of the adhesive portion of the sides is less elongated the elongate bonding pattern along the side surface It is an adhesive application pattern in which a plurality of broken-line adhesive patterns arranged at intervals of the adhesive pattern are arranged in a plurality of rows on one side and arranged in an alternating staggered pattern.
[0007]
When the bag is configured in this manner, when the bag is fed by the roller, the front and back sheets of the bag are integrated as a whole and are not easily separated, the bag feed is stable, and “wrinkles” hardly occur.
[0008]
The inventor has confirmed through experiments that the length of the long adhesive pattern is about 40 mm and the distance between the long adhesive patterns is about 2 mm.
[0009]
In order to solve the above problems, the present invention is a bag as described above, are pressing along the fold of the bottom portion, the pressing of the press pattern, the elongated press pattern along the fold line It is characterized in that it is a broken-line press pattern in which a plurality of press pattern intervals are arranged.
[0010]
In the bag of this configuration, when the bag is fed by the roller, the resistance between the opening and the folded portion (bottom) is approximated, the bag feed is stable, and “wrinkles” hardly occur.
[0011]
The inventor has confirmed by experiment that particularly good results can be obtained when the ratio of the length of the long press pattern to the press pattern interval is about 10: 1.
[0012]
In addition, the inventors have confirmed through experiments that the combination of the above-mentioned adhesive application pattern and the press pattern further improves feed stabilization and “wrinkle” prevention, and provides better results.
[0013]
In the present invention, the “long adhesive pattern along the side surface” means “a long and narrow adhesive application pattern along the side surface”, and the long side of the pattern is aligned in the direction along the side surface. The “long shape” of the “long adhesive pattern” includes not only the rectangle shown in FIG. 3 but also a capsule shape with rounded corners.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
[0015]
[Bag of Adhesive Application Pattern with Multiple Lines of Broken Line Adhesion Pattern]
1 to 3 show a first embodiment of the present invention. 1 and 2, a bag 6 is formed by folding a paper sheet 160 having a thickness of 160 μm in two and bonding the opposite sides 3 and 3 of the overlapping portion 2 and opening the opposite side 5 of the folded portion 4. It is allowed. Reference numeral 7 denotes a finger punch formed by notching one of the overlapping portions 2.
[0016]
Adhesive portions 8 and 8 are bonded to both sides 3 and 3 by an adhesive, and natural glue, synthetic glue, or pressure-bonded glue in which natural glue and synthetic glue are blended is used as the adhesive. .
[0017]
As shown in FIG. 3, the adhesive application patterns of the adhesive portions 8 and 8 on both sides are formed by replacing the long adhesive patterns 9, 9,... A plurality of broken-line adhesive patterns 11 are arranged, and this broken-line adhesive pattern 11 is an adhesive application pattern in which a plurality of lines are arranged on one side.
[0018]
The dimensions of the adhesive application pattern were set as follows. The long adhesive pattern 9 has a length L = 40 mm, a width W = 3 mm, and the long adhesive pattern interval 10 is G = 2 mm. The extreme end side of the broken line-shaped adhesive pattern 11 is disposed in contact with the side surface 3, and the broken line-shaped adhesive pattern interval 12 between the broken line-shaped adhesive pattern 11 and the broken line-shaped adhesive pattern 11 is set to g = 2 mm. Were arranged in a staggered manner as shown in FIG.
[0019]
For this staggered pattern adhesive application, an adhesive application unit or the like having this pattern is used, and the adhesive paste is applied to the long adhesive pattern 9, and the long adhesive pattern interval 10 and the dotted adhesive pattern interval are applied. No pressure bonding glue is applied to 12. When the applied pressure-sensitive adhesive is dried and then pressure-bonded, only the long adhesive pattern 9 portion is pressure-bonded, and the front cover and the back paper are separated at the long adhesive pattern interval 10 and the broken-line adhesive pattern interval 12.
[0020]
When the bags (paper bags) 6 formed in this way are stacked and set on the paper feed tray 900 (see FIG. 7) of the printer and printed, the paper bags 6 are accurately fed one by one by the rollers and printed clearly. It was. No paper jam or skewing occurred, and almost no “wrinkles” occurred in the paper bag 6. Although the paper bag has a thickness of 160 μm, which is thinner than that of the conventional paper bag, it is possible to smoothly feed the printer in such a manner that the conventional paper bag is easily damaged.
[0021]
The reason for this smooth feed is that the front and back papers are integrated by the adhesive portions on both sides of the paper bag 6 and are difficult to separate. In the prior art, since the glue was applied in a straight line, the paper was stretched and wavy due to the moisture of the glue, causing problems when feeding paper. Will not occur and will be flat.
[0022]
In this embodiment, the adhesive application pattern can be variously modified. For example, the length of the long adhesive pattern 9 is not uniform, the length is mixed, or the number of columns of the broken-line adhesive pattern 11 is changed. One row, three or more rows, or a somewhat disturbed staggered arrangement may be used. The shape of the long adhesive pattern 9 is not limited to a rectangle, and the length does not need to be uniform. However, in the above-described embodiment, the paper bag feed from the printer paper feed tray is particularly stable.
[0023]
[Broken line adhesive pattern and broken line press pattern bag]
Next, a second embodiment of the present invention will be described.
[0024]
In this embodiment, the adhesive application patterns of the adhesive portions 8 and 8 on both sides of the paper bag 6 are arranged in contact with the side surface 3 with the broken-line adhesive patterns 11 in FIG. The pattern 9 had a length L = 40 mm, a width W = 3 mm, and the long adhesive pattern interval 10 was G = 2 mm.
[0025]
Also in the case of the second embodiment, the adhesive paste is applied to the long adhesive pattern 9 using an adhesive application unit or the like in which an adhesive is applied to the adhesive application pattern. No crimping glue is applied to the. Therefore, even after the press bonding, the front cover and the back paper are separated at the long adhesive pattern interval 10.
[0026]
Further, as shown in the development view of the bag in FIG. 4, the bifold portion 4 is subjected to press working along the fold. The press pattern of this press work is a broken line press pattern in which a plurality of long press patterns 13 along the crease are arranged at a small press pattern interval 14.
[0027]
This broken line press pattern was such that the ratio p: s between the length of the long press pattern 13 and the press pattern interval 14 was about 10: 1.
[0028]
A press die having a broken line press pattern was used for the pressing. The long press pattern 13 is compressed, and the press pattern interval 14 is not compressed. The press pattern part as a whole has increased rigidity and strength. For this reason, it is difficult for the bottom of the bag to fall out.
[0029]
Even when the paper bags were stacked and set on the paper feed tray 900 of the printer, the paper bags were accurately fed one by one by the rollers and printed clearly. There was no paper jam or skew, and there was almost no “wrinkle” in the paper bag. Although the paper bag has a thickness of 160 μm, which is thinner than that of the conventional paper bag, it is possible to smoothly feed the printer in such a manner that the conventional paper bag is easily damaged.
[0030]
The reason for realizing the smooth feed is that, in addition to the reason for the embodiment shown in FIGS. 1 to 4 described above, the press portion of the folded portion 4 of the paper bag 6 has high rigidity, and the front and back sides of the bag by rollers at the time of feeding. Therefore, it is considered that the contact pressure between the opening 5 and the folded portion 4 is balanced, and skewing or the like hardly occurs.
[0031]
In this embodiment, the long adhesive pattern and the long press pattern can be variously modified, for example, the length of the long adhesive pattern is not uniform, the length is mixed, The length of the press pattern may not be uniform. However, in the second embodiment described above, the paper bag feed from the printer paper feed tray is particularly stable.
[0032]
Furthermore, the adhesive application pattern may be arranged in a plurality of rows as in the embodiment of FIGS.
[0033]
In the above-described first and second embodiments, the paper bag has been described. However, the present invention can be similarly applied to a bag using a sheet of synthetic paper or synthetic resin.
[0034]
【The invention's effect】
As described above in detail, according to the present invention, the pressure-sensitive adhesive is used for the adhesive on the adhesive portion on both sides of the folded bag, and the adhesive application pattern on the adhesive portion is changed to the long adhesive pattern along the side surface. A plurality of broken adhesive patterns arranged at intervals of small elongated adhesive patterns, a plurality of broken adhesive patterns arranged on one side, or an adhesive application pattern arranged in multiple rows on one side, and two such adhesive application pattern bags. Since the press processing is performed along the folds of the folds, and the press pattern of the press processing is a broken-line press pattern in which a plurality of long press patterns along the fold are arranged at small press pattern intervals, When printing on the surface, the bag is normally fed from the paper feed tray and can be printed clearly at the correct position. Moreover, the paper thickness of the bag in the case of a paper bag can also use 160 micrometers paper thinner than before.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is an enlarged view of a main part of FIG.
FIG. 4 is a development view showing another embodiment of the present invention.
FIG. 5 is a front view showing an example of a conventional paper bag.
6 is an enlarged view of a main part viewed from an arrow VI in FIG.
FIG. 7 is a perspective view showing a state in which a bag is set on a paper feed tray of the printer.
[Explanation of symbols]
1 Sheet for bag 2 Overlapping part 4 Folded part 6 Bag (paper bag)
8 Adhesive part 9 Long adhesive pattern 10 Long adhesive pattern interval 11 Broken line adhesive pattern 12 Broken line adhesive pattern interval 13 Long press pattern 14 Press pattern interval

Claims (2)

In the envelope-type bag that folds the bag sheet and adheres both sides of the overlapped part, with the folded part as the bottom and the opposite side as the opening, and feeds it with the feed roller of the printer for printing
The adhesive on the adhesive parts on both sides is a pressure-sensitive adhesive.
Adhesive application patterns on the adhesive portions on both sides are arranged in multiple rows on one side with dashed adhesive patterns in which a plurality of long adhesive patterns along the side surfaces are arranged at small long adhesive pattern intervals , and arranged in staggered patterns A bag characterized by having an adhesive application pattern. Pressed along the bottom crease,
The press pattern of the press processing is a broken-line press pattern in which a plurality of long press patterns along the crease are arranged at small press pattern intervals.
The bag according to claim 1.

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