JP3889582B2 - Overlapping sheet for printing bag and method for making printing bag using this overlapping sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an overlapping sheet for a printing bag and a method for producing a printing bag using the overlapping sheet.
[0002]
[Prior art]
Conventionally, a non-impact printer that heats and fixes toner, especially a heat roll type printer, when printing on various bag-like items such as envelopes, heat is applied to the print surface to form a substrate constituting the print surface Elongation occurs, and since the three peripheral edges are bonded, this elongation cannot be absorbed and wrinkles are generated.
[0003]
[Problems to be solved by the invention]
For this reason, according to the conventional example, wrinkles are generated on the surface on which the information is printed, which causes a disadvantage of poor appearance. In order to eliminate this inconvenience, it is conceivable to change the base material constituting the printing surface to a material that does not easily stretch even when heated. However, this causes another inconvenience that the cost increases. It is an object of the present invention to provide a printing bag overlapping sheet and a method for producing a printing bag using the overlapping sheet, in which such disadvantages are eliminated.
[0004]
[Means for Solving the Problems]
In order to achieve this object, an overlay sheet for a printing bag according to claim 1 of the present invention adheres an upper sheet and a lower sheet stacked under the upper sheet along one end edge, and displays the surface of these sheets. At least one of the exit surfaces is formed as a printing surface, and at least one of the overlapping surfaces of these sheets is normally not bonded along the two edges perpendicular to the bonding edge, and can be bonded by applying a predetermined temperature or more. A heat-sensitive adhesive is provided , and this heat-sensitive adhesive installation portion is in a non-adhered state before the temperature is applied .
[0005]
Similarly, in order to achieve the above-mentioned object, a method for producing a printing bag using the overlapping sheet for a printing bag according to claim 2 of the present invention provides a method of combining an upper sheet and a lower sheet superimposed thereon at one end. And at least one of the exposed surfaces of these sheets is used as a printing surface, and at least one of the overlapping surfaces of these sheets is usually not bonded along two edges perpendicular to the bonding edge. Applying a superposition sheet for a print bag provided with a heat-sensitive adhesive that can be bonded when the above temperature is applied to a non-impact printer with the adhesive end facing the traveling direction, and printing predetermined information on the print surface At the same time, the two ends provided with the heat-sensitive adhesive are bonded to create a bag.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a plan view showing a superposed sheet for a printing bag, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a plan view showing a superposed surface side of a lower sheet, and FIG. It is a top view which shows a printing bag.
[0007]
As shown in FIG. 1 to FIG. 3, the overlapping sheet 1 for a printing bag is composed of an upper sheet 2 and a lower sheet 3 stacked under the upper sheet 2 with a normal adhesive 4 having a strong adhesive force along one edge. Bonding is performed, and the exposed surface of the upper sheet 2 is used as a printing surface. Adhesion by the adhesive 4 extends slightly to the two edge portions orthogonal to the one edge. As shown in FIG. 3, the heat-sensitive adhesive 5 that can be bonded to the overlapping surface of the lower sheet 3 along two end edges orthogonal to the bonding end, and is not normally bonded but can be bonded when a predetermined temperature or higher is applied. Is provided.
[0008]
As the heat-sensitive adhesive 5, a conventionally known adhesive can be used. For example, a delayed tack type adhesive can be used. Although this delayed tack type adhesive does not have adhesiveness in a normal state, it exhibits adhesiveness by application of heat at a certain temperature (activation temperature) or higher, and immediately after cooling to room temperature. It is not lost and has adhesiveness for a certain period.
[0009]
Specifically, the delayed tack-type pressure-sensitive adhesive is made of the following substances. That is, ethylene-ethylacrylic acid copolymer, polyvinyl acetate, vinyl acetate-ethylene copolymer, polybutyl methacrylate, vinyl chloride-vinylidene chloride copolymer, vinyl acetate-2-ethylhexyl allylate copolymer , Vinyl pyrrolidone-styrene copolymer, vinyl pyrrolidone-ethyl acrylate copolymer, styrene-butadiene copolymer, polyamide resin, polystyrene resin, polyurea resin, etc., rosin glycerin ester, pentaerythritol Tackifiers such as modified rosin, petroleum resin, indene resin, ethyl cellulose, α-methylstyrene-vinyltoluene copolymer, temper oil polymer, temperphenol polymer, and dihydroabiethyl phthalate, dihexyl phthalate, phthalic acid Diphenyl, iso Tal dimethyl, tri acid ethylene glycol, tetra acid trimethylolethane, citrate tri dichloride hexyl, methoxyethyl stearate - may be mentioned plasticizers such as urea complex. Furthermore, additives such as waxes, antioxidants, desiccants and lubricants are added as necessary.
[0010]
In order to create a print bag from the above-described print bag overlay sheet 1, it is applied to a known non-impact printer so that the adhesive end of the print bag overlap sheet 1 faces the traveling direction, and the print surface of the upper sheet 2 is applied. A predetermined information 6 is printed, and heat is applied to the two end edges provided with the heat-sensitive adhesive 5 to bond them to form a print bag 7 shown in FIG. As the non-impact printer, a heat roll type is suitable.
[0011]
At the time of printing by a non-impact printer, heat is applied to the printing surface and the upper sheet 2 is stretched. At this time, the three peripheral edges of the print bag overlapping sheet 1 are in a non-adhered state, so It is bonded to the lower sheet 3 by the mold adhesive 5 and does not wrinkle.
[0012]
The present invention is not limited to the above-described embodiment. For example, when not only the upper sheet 2 but also the exposed surface of the lower sheet 3 is a printing surface, a double-sided printer can perform a single printing operation. Printing is performed simultaneously with the bonding with the heat-sensitive adhesive 5. Further, as the heat-sensitive adhesive 5, a hot melt adhesive may be used, and as the polymer used as the hot melt adhesive, styrene-isoprene-styrene, styrene-butadiene-styrene, styrene -Ethylene-butylene-styrene, ethylene vinyl acetate, etc.
[0013]
【The invention's effect】
As described above, according to the superposed sheet for a print bag according to claim 1 of the present invention, it is possible to obtain a print bag having a good appearance without being wrinkled on the surface on which information is printed.
[0014]
Moreover, according to the printing bag production method described in claim 2 of the present invention, by using the printing bag overlapping sheet described in claim 1, the printed surface of the information is not wrinkled and looks good. There is an effect that a printing bag can be easily created.
[Brief description of the drawings]
FIG. 1 is a plan view showing an overlapping sheet for a printing bag.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a plan view showing an overlapping surface side of a lower sheet.
FIG. 4 is a plan view showing the created printing bag.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Superposition sheet for printing bags 2 Upper sheet 3 Lower sheet 4 Adhesive 5 Thermal adhesive 6 Information 7 Printing bag

Claims (2)

Adhering the upper sheet and the lower sheet superposed under it along one edge, forming at least one of the exposed surfaces of these sheets as a printing surface, and at least one of the overlapping surfaces of these sheets with the adhesive edge A heat-sensitive adhesive is provided along two orthogonal edges, which is not normally bonded and can be bonded when a predetermined temperature is applied, and this heat-sensitive adhesive installation portion is in a non-adhesive state before the temperature is applied. An overlaid sheet for a printing bag.   Adhering the upper sheet and the lower sheet superposed under it along one edge, forming at least one of the exposed surfaces of these sheets as a printing surface, and at least one of the overlapping surfaces of these sheets with the adhesive edge A laminated sheet for a print bag, which is provided with a heat-sensitive adhesive that can be bonded when applied at a temperature above a certain level, usually without bonding, along two perpendicular edges, so that the bonding edge faces the direction of travel. And using a superimposing sheet for a printing bag, which is printed on a non-impact printer, prints predetermined information on the printing surface, and bonds two edges provided with a heat-sensitive adhesive to create a bag. How to make a printing bag.

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