JP4913644B2 - Strip for supplying thermal label and apparatus for manufacturing the same - Google Patents

Description

  The present invention relates to a heat-sensitive label supplying strip for supplying a heat-sensitive label having an arbitrary shape to be attached to an adherend such as a bottle, and a manufacturing apparatus therefor.

  The tack label is generally supplied as a tuck label supply strip attached to a long strip of release paper at regular intervals, and the tack labeler removes the tuck label from the tuck label supply strip. While peeling one by one, it sticks to the outer peripheral surface of the body of a bottle container or the like.

  On the other hand, in the case of a thermal label, unlike a tack label, there is no release paper. Therefore, a thermal label with a predetermined shape manufactured in advance is supplied to a thermal labeler or the thermal label is applied to the back side of the substrate. The long strip-shaped label forming material on which the adhesive layer is formed is supplied to the thermal labeler in a state of being wound in a roll shape, and individually by punching into a predetermined shape with a die cut roll etc. while the thermal labeler feeds the label forming material The heat-sensitive labels are sequentially formed, and this is adhered to the outer peripheral surface of the body of a bottle container or the like.

JP 2002-104349 A JP 2006-117283 A

  However, when supplying a thermal label to a thermal labeler, the thermal label to which the thermal labeler is supplied must be handled individually. For example, the label should be transferred from the label stocker to the application drum at a high speed. There is a problem that it cannot cope with high-speed operation of the thermal labeler.

  On the other hand, when sticking while forming a thermal label of a predetermined shape by punching the label forming material by the thermal labeler, it is necessary to mount a label forming mechanism such as a die-cut roll on the thermal labeler, which increases the size of the thermal labeler. In addition, there is a problem that costs increase. Furthermore, if the shape of the thermal label is changed, expensive die-cut rolls must be replaced, and when the number of thermal label varieties increases, it takes time and cost to change the thermal labeler. is there.

  Therefore, the problem of the present invention is that it is not necessary to mount a label forming mechanism on the thermal labeler, and moreover, it is possible to handle a large number of thermal labels in an integrated manner so that it can cope with high-speed operation of the thermal labeler. A label supply strip, a method for manufacturing the same, and a manufacturing apparatus are provided.

In order to solve the above-mentioned problem, the invention according to claim 1 is directed to laser-cutting a long strip-shaped label forming material having a heat-sensitive adhesive layer formed on the back side of a base material, thereby providing a heat-sensitive label having a predetermined shape. Cuts for cutting are formed at a predetermined pitch on the base material, and the heat-sensitive adhesive layer has a cut part formed by laser cutting and re-welded by preheating after laser cutting. A belt for supplying a label is provided.

As in the invention according to claim 2 , the heat-sensitive adhesive layer is desirably formed of an extrusion lamination type heat-sensitive resin having a Vicat softening point of 30 to 60 ° C. as defined in JIS K 7206. When the Vicat softening point is lower than 30 ° C., the label forming material is laser-cut simultaneously, and at the same time, the heat-sensitive adhesive layer is re-welded, the heat-sensitive adhesive layer is not cut at all, and the heat-sensitive label is difficult to be removed. This is because blocking is likely to occur when wound around, and if the Vicat softening point exceeds 60 ° C., re-welding after laser cutting becomes difficult to occur, and the thermal label easily falls off.

Further, the thermosensitive adhesive layer, as in the invention according to claim 3, it is desirable that the ring and ball softening point as specified in JIS K 6863 is formed by 60 to 90 ° C. in a hot-melt-type heat-sensitive resin. When the ring-and-ball method softening point is below 60 ° C., the label forming material is laser-cut, and at the same time, the heat-sensitive adhesive layer is re-welded, and the heat-sensitive adhesive layer is not cut at all and the heat-sensitive label is difficult to be removed. This is because blocking tends to occur when wound in a shape, and if the ring and ball method softening point exceeds 90 ° C., re-welding after laser cutting becomes difficult to occur, and the thermal label easily falls off. .

A strip for supplying a heat-sensitive label according to the first aspect of the present invention is a label-forming material feeding unit that feeds a long-band-shaped label-forming material having a heat-sensitive adhesive layer formed on the back side of the substrate, and the label A laser cutting unit for forming the cuts at a predetermined pitch on the substrate for cutting out a heat-sensitive label of a predetermined shape by sequentially cutting the label forming material sent by the forming material sending unit, and the laser cutting unit A thermal label supply strip-shaped body winding unit for winding the thermal label supply strip in which the cut is formed on the base material of the label forming material into a roll , and formed by laser cutting. Laser output of the laser cutting unit and laser so that the heat-sensitive adhesive layer is re-welded by preheating after laser cutting of the cut portion査速degree can be produced by the apparatus of the invention according to claim 4 which is set.

As described above, in the heat-sensitive label supply strip according to the first aspect of the present invention, a cut for cutting out a heat-sensitive label having a predetermined shape is formed on the base material constituting the label-forming material. In the adhesive layer, the portion corresponding to the inner region and the portion corresponding to the outer region of the base material defined by the cuts are connected to each other by re-welding after laser cutting. A number of heat-sensitive labels can be handled integrally without the labels falling off. Therefore, when this thermal label supply strip is supplied to the thermal labeler, it takes time to take out the thermal labels one by one from the label stocker and deliver them one by one to the pasting drum, as in the case of supplying thermal labels one by one. There is no need to perform such work, and it is possible to cope with high-speed operation of the thermal labeler.

  In addition, since the base part is cut out in a predetermined shape and the peripheral part is connected only to the thermal adhesive layer, the part that becomes the thermal label of the thermal label supply band is, for example, the thermal label supply band In a state in which the outer peripheral surface of the drum is sucked and held, the surrounding unnecessary portion is wound up, whereby the heat-sensitive label having a predetermined shape can be easily extracted from the heat-sensitive label supply strip. Therefore, it is not necessary to mount a label forming mechanism such as a die-cut roll on the thermal labeler, the thermal labeler can be reduced in size and cost can be reduced, and even if the shape of the thermal label is changed, the type of the thermal labeler Replacement can be performed easily.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a strip for supplying a thermal label for supplying a thermal label to be adhered to the body of a PET bottle, and the strip 1 for supplying a thermal label has a base as shown in FIG. The long strip-shaped label forming material 10 in which the printing layer 12 and the heat-sensitive adhesive layer 13 are sequentially laminated on the back side of the material 11 is laser-cut to form cuts 10A for cutting out a heat-sensitive label having a predetermined shape at a predetermined pitch. Formed.

  The cut 10A divides the substrate 11 and the printed layer 12, but the heat-sensitive adhesive layer 13 has a cut portion formed by laser cutting and is re-welded by preheating after laser cutting. A portion corresponding to the inner region of the base material 11 and the printing layer 12 to be partitioned and a portion corresponding to the outer region are connected to each other. Therefore, the inner part of the cut line 10 in the substrate 11 and the printed layer 12, that is, the part extracted as the heat-sensitive label is held by the heat-sensitive adhesive layer 13 on the outer part thereof.

  The substrate 11 can be formed of a stretched polypropylene film, a stretched polyethylene terephthalate film, a stretched polystyrene film, a synthetic paper (foamed polypropylene), a foamed polyethylene terephthalate sheet, paper, and the like. It is 9 to 120 μm, preferably 12 to 80 μm. In addition, a stretched film does not ask | require uniaxial stretching and biaxial stretching.

  The printing layer 12 displays the product name, components, design, etc. of the liquid product contained in the PET bottle, and is formed by a general printing method such as gravure printing, flexographic printing (UV, water-based), or silk screen. can do.

  The type of the heat-sensitive resin for forming the heat-sensitive adhesive layer 13 is not particularly limited, and is an extrusion lamination type heat-sensitive resin that is applied by a laminating machine, a hot-melt type heat-sensitive resin that is applied by a hot-melt coater, and a gravure printing machine. It is possible to use a solution type thermal resin, an emulsion type thermal resin, or the like to be applied in step (b). However, in order to use as a heat-sensitive label, the adhesive strength with respect to the polyethylene terephthalate film has an adhesive strength of 3 N / 15 mm or more under the pasting conditions of a heating temperature of 120 ° C., a pressing force of 0.1 MPs, and a pressing time of 1 s. There is a need.

  In particular, as described above, when the cut 10A is laser-cut, an extrusion lamination type thermosensitive resin having a Vicat softening point of 30 to 60 ° C. specified in JIS K 7206, or a ring and ball method specified in JIS K 6863. It is desirable to form with a hot-melt type heat-sensitive resin having a softening point of 60 to 90 ° C.

  When the Vicat softening point of the extrusion lamination type thermosensitive resin is 30 ° C. and the ring and ball softening point of the hot melt type thermosensitive resin is less than 60 ° C., the label forming material 10 is laser-cut at the same time as the thermal adhesive layer 13 is re-welded. This is because the heat-sensitive adhesive layer 13 is not cut at all and it is difficult to remove the heat-sensitive label, and blocking is likely to occur when wound in a roll shape. The extrusion-cut heat-sensitive resin has a Vicat softening point of 60 ° C. If the ring and ball softening point of the hot-melt type heat-sensitive resin exceeds 90 ° C., re-welding after laser cutting becomes difficult to occur, and the heat-sensitive label easily falls off.

  Also, the type of base resin of the heat sensitive resin is not particularly limited, and ethylene vinyl acetate copolymer, ethylene-acrylic acid ester copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid ester copolymer, ethylene -A methacrylic acid copolymer, an olefin resin, a natural rubber resin, a styrene-isoprene-styrene copolymer, a styrene-butadiene-styrene copolymer, and the like can be used.

  The belt 1 for supplying a thermal label configured as described above is manufactured by a manufacturing apparatus 2 shown in FIG. As shown in the figure, the manufacturing apparatus 2 includes a label forming material sending unit 21 that feeds and feeds a label forming material 10 from a label forming material roll R formed by winding a long strip of label forming material 10 into a roll. A laser cutting unit 22 for forming cuts 10A for cutting out a heat-sensitive label of a predetermined shape at a predetermined pitch by sequentially cutting the label forming material 10 delivered by the label forming material delivery unit 21; The cutting unit 22 is installed on the downstream side of the motor-driven take-up reel 23a and the laser cutting position for winding the heat-sensitive label supply strip 1 with the cut 10A formed in the label forming material 10 into a roll shape. A thermal label supplying belt-like body winding unit 23 having a delivery roller 23b, and a laser cutting position It is along the label formation member 10, the guide plate 24 to suppress the deflection of the label forming material 10 is installed.

  As shown in the figure, the label forming material feeding unit 21 includes a feeding reel 21a that rotatably supports the label forming material roll R, and a label forming material 10 from the label forming material roll R set on the feeding reel 21a. And a tension suppression mechanism 21c composed of a plurality of dancer rollers that alternately hangs the label forming material 10 on the downstream side of the feeding roller 21b, and a label fed from the label forming material roll R. The forming material 10 is delivered to the laser cutting position while maintaining an appropriate tension.

  As shown in FIG. 4, the laser cutting unit 22 includes a transmission mirror 22a that rotates about the Z axis and a transmission mirror that rotates about the X axis that sequentially reflects the laser beam generated by the carbon dioxide laser transmitter. The laser beam can be directed in an arbitrary direction determined by the X axis and the Y axis by 22b, and a control device (not shown) takes into account the moving speed of the label forming material 10 and each transmission mirror 22a. By controlling the angle of 22b, a cut 10A having a predetermined shape can be formed on the moving label forming material 10. Note that reference numeral 22c in the figure indicates a condensing lens.

  When the label forming material 10 is laser-cut by the laser cutting unit 22, as shown in FIG. 5, the substrate 11, the printing layer 12, and the heat-sensitive adhesive layer 13 constituting the label forming material 10 are once cut. Thereafter, the cut portion of the heat-sensitive adhesive layer 13 is re-welded by preheating after laser cutting, and as shown in FIG. 2, the portion corresponding to the inner region of the substrate 11 and the printing layer 12 defined by the cut 10A and the outer side The parts corresponding to the areas are connected to each other.

  Thus, in order for the heat-sensitive adhesive layer 13 once cut to be re-welded, the coefficient [W · sec / divided by dividing the laser output [W] of the laser cutting unit 22 by the laser scanning speed [mm / sec]. mm] is preferably set to 0.005 to 0.05. This is because if the coefficient is less than 0.005, it is difficult to remove the heat-sensitive label because it is not cut at all. If the coefficient exceeds 0.05, it is difficult for the heat-sensitive adhesive layer 13 to be re-welded after laser cutting. This is because the heat-sensitive label easily falls off. Therefore, the laser output of the laser cutting unit 22 depends on the heat-sensitive resin forming the base material 11 and the heat-sensitive adhesive layer 13 to be used and the thickness thereof within the range of 0.005 to 0.05. The laser scanning speed may be set as appropriate.

  As described above, in the heat-sensitive label supplying strip 1, the cuts 10 </ b> A for cutting out the heat-sensitive label having a predetermined shape are formed on the base material 11 and the printing layer 12 constituting the label forming material 10. In the heat-sensitive adhesive layer 13, since the portion corresponding to the inner region and the portion corresponding to the outer region of the base material 11 and the print layer 12 defined by the cut 10A are connected to each other, the heat-sensitive label supply strip The heat-sensitive label does not fall off from 1, and a large number of heat-sensitive labels can be handled integrally. Accordingly, when the thermal label supplying strip 1 is supplied to the thermal labeler, the time required for taking out the thermal labels one by one from the label stocker and delivering them one by one to the affixing drum, etc., as in the case of supplying thermal labels one by one. Therefore, it is possible to cope with high-speed operation of the thermal labeler.

  Moreover, since the base material 11 and the printing layer 12 are cut out in a predetermined shape and connected to the peripheral part only by the heat-sensitive adhesive layer 13 in the portion to be the heat-sensitive label of the heat-sensitive label supply strip 1, for example, In a state where the belt 1 for supplying a thermal label is sucked and held on the outer peripheral surface of the drum, a thermal label having a predetermined shape can be easily extracted from the belt 1 for supplying a thermal label by winding up unnecessary portions around the drum. . Therefore, it is not necessary to mount a label forming mechanism such as a die-cut roll on the thermal labeler, the thermal labeler can be reduced in size and cost can be reduced, and even if the shape of the thermal label is changed, the type of the thermal labeler Replacement can be performed easily.

  In the embodiment described above, the cut 10A for cutting out the heat-sensitive label having a predetermined shape is formed by laser cutting the label forming material 10, but the present invention is not limited to this, and the heat-sensitive adhesive layer is not limited thereto. As long as the cut can be formed only on the base material or the printed layer, the material may be produced by various methods.

  Moreover, in embodiment mentioned above, although the label forming material 10 in which the printing layer 12 was formed in the back surface side of the base material 11 is used, it is not limited to this, A printing layer is the surface side of a base material The printed layer may be formed or may not be present.

(A) is a top view which shows the surface side of the strip | belt body for thermal label supply which is one Embodiment of this invention, (b) is a top view which shows the back surface side of the strip | belt body for thermal label supply same as the above. It is sectional drawing which shows the strip | belt body for thermal label supply same as the above. It is the schematic which shows the manufacturing apparatus of the strip | belt body for thermal label supply same as the above. It is explanatory drawing for demonstrating the laser cutting unit mounted in the manufacturing apparatus same as the above. It is sectional drawing which shows the state immediately after forming a score in a label forming material by the laser cutting unit same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat sensitive label supply strip | belt body 2 Thermal label supply strip manufacturing apparatus 10 Label forming material 10A Cut 11 Base material 12 Printing layer 13 Thermal adhesive layer 21 Label forming material delivery unit 21a Feeding reel 21b Feeding roller 21c Tension suppression mechanism 22 Laser cutting unit 22a, 22b Transmission mirror 22c Condensing lens 23 Strip body take-up unit for thermal label supply 23a Take-up reel 23b Delivery roller R Label forming material roll

Claims (5)

Cuts for cutting out a heat-sensitive label having a predetermined shape are formed at a predetermined pitch on the base material by laser cutting a long strip-shaped label forming material having a heat-sensitive adhesive layer formed on the back side of the base material. ,
The heat-sensitive adhesive layer is a belt for supplying a heat-sensitive label, wherein a cut portion formed by laser cutting is re-welded by preheating after laser cutting. The heat-sensitive adhesive layer, the heat-sensitive label supply strip according to claim 1, Vicat softening point as specified in JIS K 7206 is formed by 30 to 60 ° C. for extrusion lamination type heat-sensitive resin. 2. The belt for supplying a thermal label according to claim 1 , wherein the thermal adhesive layer is formed of a hot melt type thermal resin having a ring and ball method softening point of 60 to 90 ° C. as defined in JIS K 6863. It is a manufacturing apparatus of the strip for a thermal label supply according to claim 1,
A label forming material sending unit for sending a long strip-shaped label forming material having a heat-sensitive adhesive layer formed on the back side of the substrate;
A laser cutting unit for forming the cuts at a predetermined pitch on the base material for cutting out a heat-sensitive label of a predetermined shape by sequentially cutting the label forming material sent by the label forming material sending unit;
A heat-sensitive label supply belt-shaped body winding unit for winding the heat-sensitive label supply belt-shaped body in which the cut is formed on the base material of the label forming material into a roll shape by the laser cutting unit ;
For supplying thermal labels, the laser output and laser scanning speed of the laser cutting unit are set so that the thermal adhesive layer is re-welded by preheating after laser cutting at the cut part formed by laser cutting Equipment for manufacturing strips. The thermal sensitivity according to claim 4, wherein a coefficient [W · sec / mm] obtained by dividing the laser output [W] of the laser cutting unit by the laser scanning speed [mm / sec] is set to 0.005 to 0.05. A device for manufacturing a strip for label supply.

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