JPH10268777A - Manufacture of linerless label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a separator for an adhesive layer cover and to save resources by adhering an adhesive layer to the back of its transparent base material and rolling it, printing the adhesive layer surface of a label sheet part unwound from a winding body in ink, and cutting it to specific length. SOLUTION: Through an unwinding mechanism 6, the label sheet 3 having the adhesive layer 2 on one surface of the transparent base material 1 is unwound from its winding body 31 and guided in a printing mechanism part 5. Then information 56 consisting of the ink is printed on the adhesive surface 2 of the unwound label sheet part on the basis of the print data and then the label sheet is put in a following cutting mechanism 7 and cut to the specific size, thus forming labels 32 successively. This method gives the ink information 56 to the adhesive layer 2 provided on the transparent base material 1, so the ink information 56 is covered and protected with the transparent base material 1 through the adhesive layer 2. Therefore, the need for the separator for the adhesive cover which becomes an unnecessary body such as rubbish when the label is used is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wound body without a separator covering an adhesive layer, printing a pattern or the like on the spot, issuing a label having excellent scratch resistance, and covering the adhesive layer with the adhesive layer. The present invention relates to a method for producing a transparent linerless label which can be adhered and fixed to a body while utilizing its background color.

[0002]

2. Description of the Related Art Conventionally, various kinds of labels such as barcode labels and nameplate labels can be issued on the spot by printing ink information on a label sheet via a printer at a job site, and a label sheet can be issued via an adhesive layer previously applied. As a method of manufacturing a label that can be adhered and fixed to an adherend, a method of printing while rewinding a roll of a label sheet in which an adhesive layer provided on a printing substrate is covered with a separator has been known. In this case, a separator that covers the adhesive layer is indispensable, and without it, it becomes difficult to rewind the wound body, and the label cannot be manufactured by adhering to parts in the printer.

[0003] However, the separator must be peeled off from the adhesive layer when adhering to the adherend, and is difficult to peel off from the adhesive layer because it is thin and flexible, and the peeled-off separator becomes an unnecessary product such as dust. There was a point. In addition, there is also a problem that the ink information is located on the surface during printing on the printing substrate, and the ink information is easily lost due to rubbing or the like, and the abrasion resistance is poor. The demand for labels having excellent abrasion resistance is particularly strong in nameplate labels and the like, and there is also a demand for transparency that can utilize the ground color of the adherend as the background color of ink information.

On the other hand, separators for covering an adhesive layer, such as a delayed tack type, a printed type, a type in which an adhesive layer and a release layer are alternately laminated and the adhesive layer is sandwiched by a printing substrate, and a thermosensitive coloring type. A linerless label sheet that eliminates the need for has been proposed.

[0005] However, the delayed tack type has a problem in that it requires a heating means and labor for developing adhesiveness, and cannot be placed at a high temperature to prevent blocking or the like. In addition, the printed type has a problem in that it is not possible to print a predetermined item and issue a label on the spot because the printing is completed in advance. Further, in the sandwich type, it is necessary to provide a complicated printing mechanism capable of printing on the front and back of the label sheet, and there is a problem that the scratch resistance of the label is poor. On the other hand, the heat-sensitive coloring type is poor in light resistance, water resistance, chemical resistance, moisture resistance, heat resistance, etc., and it is difficult to read visually or with a bar code reader due to decolorization, bleeding and fogging of the applied information, In addition to being unsuitable for outdoor use, there is a problem that it is particularly poor in abrasion resistance and cannot be put to practical use as a nameplate label or the like.

[0006]

SUMMARY OF THE INVENTION The present invention uses a roll of a labelless sheet with an adhesive layer in a linerless state, without a separator, to cover the adhesive layer and to provide ink information on the spot and provide scratch resistance. It is an object of the present invention to develop a method for producing a label which can form a transparent label excellent in quality and which can easily adhere the formed product to an adherend via an adhesive layer previously applied thereto.

[0007]

According to the present invention, there is provided a label sheet having a pressure-sensitive adhesive layer on one side of a transparent substrate, wherein the pressure-sensitive adhesive layer is adhered to the back surface of the transparent substrate and unwound from a roll. The present invention provides a method for producing a linerless label that can be issued in the field, wherein printing is performed on the adhesive layer surface with ink and cut to a predetermined length.

[0008]

According to the present invention, since the ink information is provided to the adhesive layer provided on the transparent substrate, the ink information is protected by the transparent substrate via the adhesive layer and the adherend is adhered to the adherend. In addition, a label that can be easily adhered and fixed, has excellent scratch resistance, and has transparency and can utilize the ground color of the adherend can be obtained. Also, using a linerless roll of label sheet, the label can be issued by giving ink information on the spot at an opportunity. Therefore, a separator for the adhesive layer cover, which is unnecessary when the label is put to practical use, can be made unnecessary, and resources can be saved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the production method of the present invention, an adhesive layer of a label sheet having an adhesive layer on one side of a transparent substrate is adhered to the back surface of the transparent substrate and unwound from a roll. Printing is performed on the adhesive layer surface of the label sheet portion with ink and is cut to a predetermined length to obtain a linerless label, and the label can be issued on-site at an opportunity.

FIG. 1 illustrates a label issuing apparatus embodying the present invention. According to this, the label sheet 3 is rewound from the winding body 31 via the rewinding mechanism 6 composed of pinch rolls 61 and 62 using a pair of embossing rolls, introduced into the printing mechanism unit 5, and rewound. After printing the information 56 made of ink on the adhesive surface 2 of the label sheet portion based on the print data, the information 56 is introduced into the subsequent cutting mechanism 7, and the label sheet is cut into a predetermined size to form the label 32 continuously. can do.

As a label sheet, a sheet having an adhesive layer 2 on one surface of a transparent substrate 1 as shown in FIGS. 2 and 3 is used. FIG. 2 shows the label 32, and reference numeral 56 denotes ink information applied to the surface of the adhesive layer 2 of the label sheet 3.

The label sheet may be a sheet-like material having an adhesive layer on one surface of a transparent substrate and one surface of the adhesive surface being exposed, and the transparent substrate or the adhesive layer may be a single-layer material or a two-layer material. Or 3
It may have an appropriate layer form as a multi-layered product having more than one layer. Incidentally, in the example of FIG. 2, the transparent substrate 1 and the adhesive layer 2
Consists of a single-layered material, thus forming a two-layered label sheet. On the other hand, in the example of FIG. 3, the transparent substrate 1 is composed of two layers, a release layer 11 forming the back surface and a substrate layer 12 supporting the adhesive layer 2, and the adhesive layer 2 also has an internal adhesive layer 21 and an external adhesive layer. The layer 22 is composed of two superimposed layers.

As the transparent base material, one that supports an adhesive layer provided on one side and is removably adhered to the adhesive layer via the back surface is used. A transparent substrate that can be preferably used has at least a rear surface that is weak in adhesion to the adhesive layer and does not require a large force for peeling.

[0014] The transparent substrate may be formed of an appropriate material having a light transmitting property. Generally, a transparent plastic film or the like is used. There is no particular limitation on the type of the plastic, for example, polyolefins such as polyethylene and polypropylene, polyamides and polyesters, polyvinyl acetate and ethylene-vinyl acetate copolymer,
Acrylic polymers such as urethane polymers and alkyl poly (meth) acrylates, polyvinyl chloride and styrene polymers, silicone polymers and natural rubber, polyisobutylene and polyisoprene, chloroprene rubber, isoprene / isobutylene rubber, nitrile butyl rubber, Styrene / butadiene rubber, styrene / butadiene / styrene rubber or styrene / isoprene / styrene rubber, styrene / ethylene / butadiene rubber or styrene / styrene
Plastics containing rubber-based polymers, such as ethylene-butylene-styrene rubber, styrene-isoprene-propylene-styrene rubber, and ethylene-propylene terpolymer, and blends thereof are exemplified.

The release treatment applied to the back surface of the transparent substrate for the purpose of lowering the adhesive strength to the adhesive layer, for example, can be performed by a known adhesive sheet such as a silicone-based, long-chain alkyl-based, or fluorine-based adhesive sheet. It can be performed by a method of performing a coating treatment using a suitable release agent. Above all, a release coat made of a silicone resin is preferred from the viewpoint of releasability and the like.

The transparent substrate may contain appropriate additives such as a reinforcing material and an antioxidant as long as the light transmittance is maintained. As the reinforcing material, an appropriate material such as a film, a fiber, a cloth, or a nonwoven fabric can be used for the purpose of improving the strength of the transparent substrate. The physical properties of the label sheet or the label can be easily controlled by selecting the reinforcing material. For example, heat resistance can be improved by using a reinforcing material made of a heat-resistant resin such as polyester, polyimide, fluororesin or polyamide.

The formation of the transparent base material having the reinforcing material is performed by attaching the reinforcing material on the transparent base material by an appropriate method such as a heat laminating method or an extrusion coating method. It can be performed by an appropriate method such as a method of impregnating a transparent base material. Note that a transparent substrate having excellent flexibility is preferable from the viewpoint of the winding property and the curved surface adhesion.

The thickness of the transparent substrate may be appropriately determined according to the use of the label. Generally, it is 1 from the point of strength etc.
~ 500μm, especially 5 ~ 300μm, especially 10 ~ 150μ
m thickness.

The pressure-sensitive adhesive layer is used to easily adhere to an adherend when it is used as a label. In the present invention, the pressure-sensitive adhesive layer is adhered to the transparent substrate on the back surface of the substrate without a cover by a separator, and is wound. In the case of a round body, the adhesive strength to the back surface of the transparent substrate is 1 to achieve easy rewinding.
3 based on 80 degree peel value (peeling speed 300mm / min)
It is preferable that the pressure-sensitive adhesive layer has a thickness of 00 gf / 50 mm or less. Above all, from 1 to 200 gf / 50 m from the viewpoint of the automatic rewinding property via a printer and the like and the harmony of the adhesive force to the adherend.
m, particularly preferably an adhesive layer having a thickness of 5 to 150 gf / 50 mm.

For forming the adhesive layer, for example, a rubber-based adhesive, an acrylic-based adhesive, a silicone-based adhesive, a vinylalkyl ether-based adhesive, a polyvinyl alcohol-based adhesive, a polyvinylpyrrolidone-based adhesive, a polyacrylamide-based adhesive Suitable adhesives such as cellulose-based adhesives, urethane-based adhesives, polyester-based adhesives, and polyamide-based adhesives can be used. The adhesive layer can be formed using one or more adhesives.

The adhesive layer is formed by providing an adhesive layer on a separator by an appropriate method such as a rolling method such as a calender roll method or a coating method such as a doctor blade method or a gravure roll coater method, and then forming the transparent layer on a transparent substrate. It can be carried out by an appropriate method such as a method of transferring onto a predetermined surface of a material or a method of directly coating a predetermined surface of a transparent substrate.

In the pressure-sensitive adhesive layer, at least the exposed side surface layer may be formed in a porous or mesh-like form for the purpose of lowering the adhesive strength to the back surface of the transparent substrate and improving the printability with ink. The formation of the porous or mesh-shaped pressure-sensitive adhesive layer can be performed by an appropriate method such as a gravure printing method, a screen printing method, a melt blow method, and a curtain spray method.

The thickness of the adhesive layer is from 0.01 to 5 in view of achieving low adhesive strength to the back surface of the transparent substrate and suitability as a label sheet when mounted on a commercially available printer or the like.
The thickness is preferably set to 00 μm, and 0.5 to 100 μm in consideration of the stable formability of the adhesive layer having a uniform thickness.
m, preferably 1 to 50 μm, particularly preferably 2 to 20 μm.

As shown in FIG. 3, the adhesive layer maintains the low adhesive strength to the rear surface of the transparent substrate and improves the adhesive strength to the adherend when the label is used.
It can also be formed as a superposed layer of two or more pressure-sensitive adhesive layers composed of the same or different pressure-sensitive adhesives. In this case, the pressure-sensitive adhesive layer provided inside has a complex stiffness at normal temperature and a frequency of 1 Hz from the viewpoint of preventing outflow (protrusion) due to tightening in the case of a wound body, or improving the adhesion to the adherend. It is preferable that the adhesive layer has a rate of 10 ⁴ to 10 ⁷ dyne / cm ² .

For forming the internal pressure-sensitive adhesive layer, a suitable pressure-sensitive adhesive substance such as the pressure-sensitive adhesive exemplified above can be used, and a pressure-sensitive adhesive exhibiting strong adhesive strength can be preferably used. The thickness of the internal pressure-sensitive adhesive layer can be appropriately determined according to the necessary fixing force depending on the purpose of use of the label. In general,
It is 500 μm, especially 100 μm or less, especially 20 to 50 μm.

In the present invention, the label sheet is used in a state where the pressure-sensitive adhesive layer is adhered to the back surface of the transparent base material forming the sheet to form a roll-shaped wound body. In that case, the adhesive layer in the wound body may be located outside or inside the transparent substrate. The winding treatment in which the adhesive layer is positioned inside the transparent substrate is preferable from the viewpoint of preventing contamination of the adhesive layer due to adhesion of dusts due to static electricity or the like. By making the label sheet into a roll, a long label sheet can be stored in the label issuing device in a compact state.

In the label issuing apparatus shown in FIG. 1, reference numeral 4 denotes a static elimination mechanism (earth) made of a conductive plate or the like, and the label sheet is generated by static electricity generated when the label sheet 3 is rewound from the winding body 31 or the like. The purpose of the present invention is to prevent dust and the like from being easily attached to a sheet due to electrification. In the illustrated example, a state in which the static elimination mechanism 4 is disposed in contact with the wound body 31 in the vicinity of the rewinding portion of the label sheet which is likely to generate static electricity is shown. 1 or 2 at an appropriate position including the rewind portion
The above arrangement can be arranged, and a guide, a holding plate, and the like arranged as necessary in the transport path of the rewinded label sheet can also serve as the charge eliminating mechanism.

On the other hand, the printing mechanism 5 includes a platen roll 5
1 and a thermal head 52 and an ink ribbon 5
3 and a sublimation-type thermal transfer type comprising a pay-out reel 54 and a take-up reel 55. In the present invention, for example, it is appropriate to perform printing with ink of a heat fixing type or a drying type such as an ink jet type printing method. It can be a printing mechanism.

In the above, when the printing method is a sublimation type thermal transfer method, the ink layer is subjected to a release treatment with a release agent or the like in view of print processing properties, and in particular, a release treatment comprising a cured film of a silicone resin. It is preferable to use an ink ribbon that has been subjected to a mold treatment. When the printing method is an ink-jet method, use a hot-melt ink that is solid at room temperature, particularly, a hot-melt ink that contains a sticky polymer at room temperature as a binder component, such as the above-mentioned sticky substance. Is preferred from the viewpoint of print processability and the like.

The pinch roll type rewinding mechanism 6 is intended for smooth forward feeding of the label sheet by rewinding. In the present invention, a suitable mechanism other than the pinch roll type such as a belt conveyor type can be used. A plurality of them can be arranged at appropriate positions, such as near the rear part of the rotating body 31 or the front part of the cutting mechanism 7.

The label sheet is rewound from the roll and cut to prevent contamination of the adhesive surface (printing surface) and the surface of the transparent base material due to contamination of the transport path of the label sheet due to exposure in the air. , That is, the length of rewinding of the label sheet from the wound body should be short, especially, not more than 10 turns, especially not more than 5 turns in the wound body in the initial length state. preferable.

The cutting mechanism 7 for cutting the printed label sheet portion into the label 32 may be any as long as it can cut the label sheet to a predetermined size, and controls the cutting blade via a cam or the like. It can be formed by an appropriate mechanism such as a mechanism that performs intermittent operation and thereby cuts to a predetermined size.

In the example of FIG. 1, the cutting mechanism 7 includes a cutting blade 7
1 and a holding plate 72 for holding the holding plate, a linking plate 73 for fixing the holding plate, a receiving plate 74 arranged opposite to the holding plate, and a support 75 comprising a housing for fixing the holding plate 74, and the cutting blade 71 is provided. A label sheet disposed on a receiving table 74 by moving up and down integrally with the presser table 72 as shown by an arrow via a linking plate 73 intermittently connected to a driving source (not shown) in conjunction with the printing mechanism 5. Is to be cut.

Further, in the cutting mechanism 7 in the illustrated example, as shown in FIG. 4, the receiving base 74 cuts the label 32 obtained by cutting the printed label sheet 3 onto the entire surface of the adhesive layer (2) or one side thereof. The label 32 is adhered and held through a portion to temporarily fix it, thereby preventing the label from dropping, and assuring convenience in adhering the label 32 to the adherend. The temporary fixing mechanism of the label is not limited to the example shown in the figure, but the surface of the temporary fixing mechanism that adheres to the label adhesive surface has an adhesive force with the label from the viewpoint of the peeling and recoverability of the label and the prevention of breakage during peeling. 300gf / 50mm or less, especially 2
It is preferably formed of a material having a size of 00 gf / 50 mm or less, particularly 150 gf / 50 mm or less.

In the present invention, in addition to the above-mentioned temporary fixing mechanism, a mechanism for stopping the next printing until the label adhered to the adhesive part of the temporary fixing mechanism is removed, and further, the label adhered to the adhesive part is removed. Upon removal, a mechanism for automatically starting the next print and forming a label can be added as needed. As a result, it is possible to prevent the labels from being adhered to each other and prevent the sheet from being jammed at the label outlet, and to efficiently and efficiently adhere the adherends such as the same label and the serial number label.

In the apparatus shown in FIG. 4, as shown in FIG. 4, a through hole 76 is provided in the receiving base 74 of the cutting mechanism 7 and a sensor 77 of an infrared type or the like is arranged on the back surface thereof. The presence or absence of the label is detected, and a signal is sent to the control unit of the rewinding mechanism and the printing mechanism of the wound body, and the next printing is stopped while the label is present. When the label is removed, a signal is sent to the control unit to resume printing and rewinding of the wound body.

In the present invention, the label obtained by cutting the label sheet may be directly adhered to the target adherend via the adhesive layer instead of the above-mentioned temporary fixing method. . Such a direct bonding mechanism can be achieved by a mechanism according to a conventional labeler or the like.

The ink information to be provided to the adhesive layer surface of the label sheet via the printing mechanism can be formed of any characters, figures, symbols, and the like, for example, a print pattern, a picture pattern, and a bar code pattern. Therefore, an appropriate information label such as an identification label can be formed, and a single item or a certain number of labels can be issued on a spot or the like occasionally. In addition, it is preferable that the ink information is provided on the adhesive layer surface in a state of being mirror-inverted from the viewpoint of recognizability.

In the above description, the label sheet may be printed in advance with a pattern such as a fixed format, a logo mark, a fixed character, a ground pattern, etc., which need not be provided on the spot or the like at the spot. The printing process can be performed on an appropriate surface such as the front and back surfaces of the transparent substrate and the surface of the adhesive layer. However, a surface other than the surface of the transparent substrate is preferable from the viewpoint of abrasion resistance of print information.

In the label issuing apparatus embodying the present invention, it is preferred that a portion of the label sheet, such as a transport section, which comes into contact with the adhesive layer has been treated so as to have a weak adhesive force with the adhesive layer in accordance with the temporary fixing mechanism. preferable. Such a treatment can be performed by an appropriate method such as, for example, using a roll made of a polyolefin, silicone resin, or the like, or coating or baking the polyolefin, silicone, or fluororesin.

Further, it is preferable that the above-mentioned treatment for lowering the adhesive strength is performed on all portions of the label issuing device including the sheet outlet and the like in the portion in contact with the adhesive layer of the label sheet. Incidentally, in the apparatus shown in FIG. 1 described above, the upper roll 61 in the rewinding mechanism 6 is a target of the low adhesion processing. Further, it is preferable that the thermal head 52 and the like in the printing mechanism section 5 have been subjected to a low adhesive strength treatment if possible. When a portion such as a transport path contacts the adhesive layer of the label sheet, it is preferably formed movably by a roll, a belt or the like from the viewpoint of smooth transport.

Further, the label issuing apparatus embodying the present invention is covered with the housing to prevent contamination of the adhesive layer surface and the transparent substrate surface due to contamination of the label sheet transport path due to exposure to air and the like. Is preferred. In particular, it is preferable that the housing cover at least 90% of the total transport path length of the roll of the label sheet, the rewind portion thereof, and the label obtained by cutting the roll. In addition, the area of the opening in the housing, such as the label outlet and the cooling ventilation hole, is 2
It is preferably 0% or less.

FIG. 5 illustrates a thermal transfer type label issuing device (printer) provided with a housing. This printer is for producing a bar code label, and 8 is a housing. According to this printer, the label sheet 3 is rolled from the winding body 31 to the metal discharge roller 41 in the printer and the guide 91 for positioning in the width direction.
And a printing mechanism comprising a ribbon 94 for holding the sublimation type thermal transfer ink via a sensor 93 for determining the leading end position of the sheet, a thermal head 95, and a platen roll 96 via a sensor 93 for determining the leading end position of the sheet. Part 9
It is led to.

In the printing mechanism, the ink of the ink ribbon 94 sublimates through the heat generated by a thermal head that operates based on print data (not shown), and the sublimation occurs.
Is thermally transferred to the surface of the adhesive layer of the label sheet by the pressing force through which the barcode pattern to be formed is printed, and the ink ribbon is wound around the collection reel 97.

Next, the printed label sheet is inspected for the quality of the printing state via a verification mechanism 10, reaches a cutting mechanism 20 interlocked with the verification mechanism, and is cut in the width direction of the label sheet. Barcode label 33 consisting of
Is formed. In the case of a defective product, it is stored in the control unit of the verification mechanism.

The barcode label 33 after the inspection is supplied from an outlet 81 of the housing onto a receiving table 82 provided at the tip of the movable arm 83, and is held via reduced pressure suction or the like. The receiving base 82 is provided with the rotating shaft 8 of the arm 83.
4 is controlled via a control unit so as to rotate as indicated by an arrow and to adhere and fix the barcode label to the adherend 30 conveyed via the belt conveyor 40 as indicated by a virtual line. Thereby, the bar code label formed by the printer is directly bonded to the adherend.

If the bar code label is defective in the above, the cradle 82 moves to a collection box (not shown) based on the memory of the control unit via the verification mechanism and discards it. At that time, the belt conveyor stops in response to a signal issued by the control unit of the label issuing device.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a label manufacturing method.

FIG. 2 is a cross-sectional view of an example of a label and a label sheet.

FIG. 3 is a cross-sectional view of another example of a label sheet.

FIG. 4 is an explanatory diagram of an example of a cutting mechanism.

FIG. 5 is an explanatory diagram of an example of a label issuing device.

[Explanation of symbols]

 3: Label sheet 1: Transparent substrate 2: Adhesive layer 31: Winding body 32, 33: Label 56: Ink information 4, 41: Static elimination mechanism 5, 9: Printing mechanism section 6, 92: Rewind mechanism 7, 20 : Cut mechanism

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Itsuro Takenoshita 1-2-1, Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation (72) Inventor Tokinori Okazaki 1-1-2 Shimohozumi, Ibaraki-shi, Osaka No. Nitto Denko Corporation

Claims (19)

[Claims] An ink is applied to an adhesive layer surface of a label sheet portion obtained by bonding a pressure-sensitive adhesive layer of a label sheet having a pressure-sensitive adhesive layer on one surface of a transparent substrate to the back surface of the transparent substrate and rewinding the roll sheet from a roll. A method for producing a linerless label that can be issued in the field, wherein the label is printed and cut to a predetermined length. 2. The method according to claim 1, wherein the wound body is wound with the adhesive layer of the label sheet inside. 3. The method according to claim 1, wherein the printing method is a sublimation type thermal transfer method. 4. The manufacturing method according to claim 3, wherein the ink ribbon used in the printing process by the sublimation type thermal transfer system is obtained by subjecting an ink layer to a release process. 5. The production method according to claim 4, wherein the release treatment comprises a cured film of a silicone resin. 6. The method according to claim 1, wherein the printing method is an ink jet method using a hot-melt ink that is solid at room temperature. 7. The method according to claim 6, wherein the hot-melt ink contains a polymer that is tacky at room temperature as a binder component. 8. The production method according to claim 1, wherein the back surface of the transparent substrate has been subjected to a release treatment. 9. The method according to claim 1, wherein at least the exposed surface layer of the adhesive layer is formed in a porous or mesh shape. 10. The method according to claim 1, wherein the adhesive strength of the adhesive layer to the back surface of the transparent substrate is 300 gf / 50 mm or less. 11. The manufacturing method according to claim 1, wherein the adhesive force of the part contacting the adhesive layer with the adhesive layer is 300 gf / 50 mm or less. 12. The label according to claim 1, wherein the label obtained by cutting the label sheet has a mechanism for adhering to a portion having an adhesive force of 300 gf / 50 mm or less through the entire surface or a part of the adhesive layer. Manufacturing method using issuing device. 13. The manufacturing method according to claim 12, wherein the label issuing device has a mechanism for stopping the next printing until the label adhered to the adhesion site is removed. 14. The label issuing device according to claim 12, wherein the label issuing device removes the label adhered to the adhesion site.
A manufacturing method having a mechanism for automatically starting the next printing and forming a label. 15. The manufacturing method according to claim 1, further comprising a mechanism for directly bonding a label obtained by cutting from a label sheet to a target adherend via an adhesive layer thereof. 16. The label issuing device according to claim 11, wherein the label covering device covers the roll of the label sheet, the rewind portion thereof, and 90% or more of the total conveying path length of the label obtained by cutting the cover with the housing. And a housing having an opening area of 20% or less. 17. The manufacturing method according to claim 1, wherein a static elimination mechanism is arranged on a roll or a rewind portion of the label sheet. 18. The manufacturing method according to claim 1, wherein a label sheet has been subjected to a pattern by a printing process in advance. 19. The manufacturing method according to claim 1, wherein the unwinding length of the label sheet from the wound body is equal to or less than 10 turns of the wound body in the initial length state.