JP5939075B2 - Laminated label - Google Patents

Description

  The present invention relates to a laminated label.

  In various fields such as the distribution field, labels are affixed to articles to be pasted, such as cardboard boxes and garbage bags, for the purpose of displaying precautions, warnings, and contents. For such label application, a release layer was provided on the first surface of the paper substrate, and a pressure-sensitive adhesive layer that was peelable from the release layer was provided on the second surface of the paper substrate. A laminated label in which a plurality of labels are laminated is known (for example, Patent Documents 1 to 3).

In laminated labels such as Patent Documents 1 to 3, sufficient pressure is applied to the pressure-sensitive adhesive layer so that the labels are not peeled off when each peeled label is affixed to an article to be adhered. Each label can be peeled from the label laminate by the peeling layer.
In the laminated labels as in Patent Documents 1 to 3, a turning margin may be formed on each label in order to make it easy to peel the labels one by one. However, when the turning margin is formed, the label peeled off from the label laminate and attached to the article to be pasted is easily peeled off from the article to be pasted due to the turning margin.

JP 2000-135750 A JP 2004-70272 A JP 2012-98638 A

  The present invention provides a laminated label in which each label can be easily peeled off by a turning margin, and when the peeled label is stuck on an article to be stuck, the label is not easily peeled off from the article to be stuck.

The laminated label of the present invention is laminated on a plurality of labels having a base material and a pressure-sensitive adhesive layer that is provided on the back surface of the base material and can be peeled off from the surface of the base material.
A turning margin is formed on at least one corner or side of each said label;
The turning margin consists of a non-adhesive region located outside the label, and a weak adhesive region located on the center side of the label with respect to the non-adhesive region,
The non-adhesive region is a region where the pressure-sensitive adhesive layer is not provided,
The weak adhesive region is a plurality of adhesive portions provided with the pressure sensitive adhesive layer as an outermost layer on the back side of the label, and a plurality of non-adhesive portions not provided with the pressure sensitive adhesive layer, It is a laminated label which is an area | region arrange | positioned alternately toward the center side of the said label from the non-adhesion area | region side .

In addition, the laminated label of the present invention is laminated on a plurality of labels having a base material and a pressure-sensitive adhesive layer that is provided on the back surface of the base material and can be peeled off from the surface of the base material.
A turning margin is formed on at least one corner or side of each said label;
The turning margin consists of a non-adhesive region located outside the label, and a weak adhesive region located on the center side of the label with respect to the non-adhesive region,
The non-adhesive region is a region where a paste-killing layer is provided on the pressure-sensitive adhesive layer,
The weak adhesive region includes a plurality of adhesive portions whose outermost layer on the back side of the label is the pressure-sensitive adhesive layer, and a plurality of non-adhesive portions provided with a paste-killing layer on the pressure-sensitive adhesive layer. The laminated label is an area alternately arranged from the non-adhesive area side toward the center side of the label.

  In the laminated label of the present invention, each label can be easily peeled off by the turning margin, and when the peeled label is stuck on the article to be stuck, the label is hardly peeled off from the article to be stuck.

It is the perspective view which showed an example of the laminated label of this invention. It is the rear view which looked at one label in the lamination type label of Drawing 1 from the back side. FIG. 3 is an enlarged rear view in which a turning margin portion of the label of FIG. 2 is enlarged. It is AA sectional drawing of the laminated label of FIG. It is the expanded sectional view which expanded the turning margin part in one label of the laminated label of the other example of this invention. It is the expanded rear view which expanded the turning margin part in the laminated label of the other example of this invention. It is the rear view which looked at one label of the lamination type label for comparison from the back side.

  In the present specification, “back” in the laminated label means the surface on the side of the article to be pasted when the label peeled from the laminated label is stuck on the article to be stuck, and “front” means the side opposite to the article to be stuck. Means the face.

[First Embodiment]
An example of the laminated label of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 4, the laminated label 1 according to the present embodiment includes a rectangular release paper 10 and a plurality of congruent rectangular labels 20 stacked on the release paper 10. Is the body.
As shown in FIG. 4, each label 20 includes a rectangular base material 22 and a pressure-sensitive adhesive layer 24 that is provided on the back surface 22b of the base material 22 and can be peeled off from the front surface 22a. Each label 20 is laminated so that the pressure-sensitive adhesive layer 24 faces the release paper 10 side.
In each label 20, as shown in FIGS. 1 to 3, a rectangular turning margin 26 is provided on the first short side 20 a (the left side in FIG. 1). As described above, the laminated label 1 can be peeled off one by one by using the rectangular turning margin 26 formed on the first short side 20a of the plurality of labels 20 laminated on the release paper 10. It is like that.

(Turning cost)
The turning margin 26 is provided on the first short side 20 a of the label 20. The turning margin 26 includes two regions, a rectangular non-adhesive region 28 located outside the label 20 and a rectangular weak adhesive region 30 located closer to the center of the label 20 than the non-adhesive region 28.
The non-adhesive region 28 is a rectangular region located outside the label 20 and having a longitudinal direction in the direction along the first short side 20a. The non-adhesive region 28 is not provided with the pressure-sensitive adhesive layer 24. That is, the non-adhesive region 28 is a region having no adhesive force.

The weak adhesive region 30 is a rectangular region in which the direction along the first short side 20a on the center side of the label 20 is longer than the non-adhesive region 28. The weak adhesive region 30 includes two rectangular adhesive portions 30a provided with a pressure-sensitive adhesive layer 24 as the outermost layer on the back side of the base material 22, and two rectangular non-adhesive portions provided with no pressure-sensitive adhesive layer 24. This is a region where the adhesive portion 30b is mixed. The adhesive portion 30a and the non-adhesive portion 30b are alternately striped in the order of the adhesive portion 30a, the non-adhesive portion 30b, the adhesive portion 30a, and the non-adhesive portion 30b so as to be parallel to the first short side 20a of the label 20. Is arranged.
The weak adhesive region 30 has an adhesive portion 30a having adhesive strength and a non-adhesive portion 30b having no adhesive strength, and thus has adhesive strength as a whole region, but the portion other than the turning margin 26 in the label 20 The adhesive strength is low compared to.

In the laminated label 1, by using the turning margin 26, each of the laminated labels 20 can be easily peeled one by one. In particular, the label 20 can be easily peeled off from the laminated label 1 even when wearing gloves and gloves. Moreover, when the label 20 peeled from the laminated label 1 is stuck on the article to be adhered, the label 20 is hardly peeled off from the article to be adhered. The following factors can be considered as factors for obtaining such an effect.
For example, a description will be given in comparison with the label 120 illustrated in FIG. The label 120 includes a rectangular base material 122 and a pressure-sensitive adhesive layer 124 that is provided on the back surface of the base material 122 and can be peeled off from the front surface. In the label 120, a rectangular turning margin 126 having the same size as the turning margin 26 in the label 20 is provided on the first short side 120a (the left side in FIG. 7). The turn margin 126 is not provided with the pressure-sensitive adhesive layer 124 in all regions. In the case of a laminated label in which a plurality of labels 120 are laminated, it is easy to peel the labels 120 from the laminated body one by one using the turning margin 126. However, when the peeled label 120 is affixed to the article to be adhered, the portion of the turning allowance 126 in the label 120 is not adhered to the article to be adhered, and is in a state of floating from the surface of the article to be adhered. Therefore, when handling the article to be adhered, if the articles to be adhered are rubbed with each other, or if the article to be adhered is rubbed with other objects, the label 120 is peeled off from the article to be adhered due to the part of the turning margin 126. Easy to fall.
On the other hand, in the laminated label 1, although the weak adhesive region 30 in the turning margin 26 has adhesive strength, the weak adhesive region 30 is mixed with the adhesive portion 30a and the non-adhesive portion 30b. Peeling of the weak adhesive region 30 in the generation 26 is light. Therefore, it is easy to peel off the label 20 from the laminated label 1 using the turning margin 26. Further, when the peeled label 20 is stuck on the article to be pasted, the weak adhesive region 30 in the turning margin 26 of the label 20 is adhered to the article to be stuck. For this reason, the portion of the label 20 that is lifted from the surface of the article to be pasted is only the non-adhesive region 28 in the turning margin 26. Thus, when the laminated label 1 is used, the portion of the attached label 20 that is not adhered to the article to be attached is reduced. For this reason, even when the articles to be pasted are rubbed with each other or the articles to be pasted are rubbed with other objects, it is possible to prevent the label 20 from being peeled off from the article to be pasted due to the part of the turning margin 26.

500-4000 mm < ² > is preferable and, as for the area of the turning margin 26 formed in the 1st short side 20a of the label 20, 700-2000 mm < ² > is more preferable. If the said area is more than a lower limit, it will become easy to peel and use each label 20 laminated | stacked in the laminated label 1. FIG. Moreover, if the said area is below an upper limit, the label 20 affixed on the to-be-applied article will become difficult to peel off.
The width d ₁ (FIG. 2) of the turning margin 26 formed on the first short side 20a of the label 20 is preferably 5 to 30 mm, and more preferably 10 to 20 mm. If the width d ₁ is equal to or greater than the lower limit value, it is easy to peel off each label 20 from the laminated label 1 using the turning margin 26. If the width d ₁ is not more than the upper limit, hardly peeled off more labels 20 affixed to a landing article.

The ratio of the area of the non-adhesive region 28 to the area of the turning margin 26 is preferably 10 to 90%, and more preferably 30 to 70%. If the said ratio is more than a lower limit, it will become easy to peel each label 20 from the laminated label 1 using the turning margin 26. FIG. If the said ratio is below an upper limit, the label 20 affixed on the to-be-applied article will be harder to peel off.
The width d ₂ (FIG. 2) of the non-adhesive region 28 in the turning margin 26 formed on the first short side 20a of the label 20 is preferably 1 to 10 mm, and more preferably 2 to 7 mm. If the width d ₂ is equal to or greater than the lower limit value, it is easy to peel off each label 20 from the laminated label 1 using the turning margin 26. If the width d ₂ is less than the upper limit, hardly peeled off more labels 20 affixed to a landing article.

30 to 95% is preferable and, as for the ratio of the area of the adhesion part 30a of the weak adhesion area | region 30 with respect to the area of the turning margin 26, 50 to 80% is more preferable. If the said ratio is more than a lower limit, the label 20 affixed on the to-be-applied article will be harder to peel off. If the said ratio is below an upper limit, it will become easy to peel each label 20 from the laminated label 1 using the turning margin 26. FIG.
5-70% is preferable and, as for the ratio of the area of the adhesion part 30a with respect to the area of the weak adhesion area | region 30 in the turning margin 26, 20-80% is more preferable. If the said ratio is more than a lower limit, the label 20 affixed on the to-be-applied article will be harder to peel off. If the said ratio is below an upper limit, it will become easy to peel each label 20 from the laminated label 1 using the turning margin 26. FIG.

(Release paper)
The release paper 10 is not particularly limited as long as the lowermost label 20 among the plurality of labels 20 stacked on the release paper 10 can be peeled off, and a known release paper can be adopted.

(Base material)
The base material 22 may be any material as long as it can releasably adhere the pressure-sensitive adhesive layer 24 of the adjacent label 20 to the surface 22a. For example, a base material in which a release layer is provided on the surface of a paper base material, polypropylene Examples thereof include a film substrate having releasability such as a film. Especially, the base material by which the peeling layer was provided in the surface of the paper base material is preferable.

Examples of the paper base material include wood pulp composed mainly of wood pulp and containing additives such as pigments and various auxiliaries as necessary.
As wood pulp, either hardwood (L material) or softwood (N material) may be used, and various chemical pulps, semi-chemical pulps, mechanical pulps, regenerated pulps, and the like can be used.
Examples of chemical pulp include kraft pulp (KP), sulfite pulp (SP), and soda pulp (AP). Semi-chemical pulp includes semi-chemical pulp (SCP), chemi-ground wood pulp (CGP), and the like. Examples of the mechanical pulp include groundwood pulp (GP), thermomechanical pulp (TMP), bleached chemithermomechanical pulp (BCTMP), refiner groundwood pulp (RGP), and the like. Examples of recycled pulp include deinked pulp (DIP) made from waste paper.
Moreover, you may use the non-wood pulp which uses a raw material, such as a persimmon, three bases, hemp, and kenaf.

In the case of using a paper substrate with high whiteness, pulp bleached by combining various bleaching methods using chlorine, chlorine dioxide, oxygen, ozone, hydrogen peroxide, hypochlorous acid or the like can be used. Among these, pulp produced by chlorine-free bleaching (ECF) or complete chlorine-free bleaching (TCF) produced in a process that does not use chlorine is preferably used because it hardly causes yellowing.
The pulp forming the paper substrate may be one kind or two or more kinds.

80 to 650 mL is preferable, and 200 to 600 mL is more preferable after the disaggregation based on Canadian Standard Freeness (freeness: CSF) defined in JIS P 8121 of pulp used for the paper base material. If the freeness is less than or equal to the upper limit value, the surface of the paper base material tends to be smooth, and the paper strength of the paper base material is easily obtained. If the freeness is equal to or greater than the lower limit, good papermaking properties such as good drainage and a sufficient papermaking speed can be obtained, and writing properties and stamping properties on the surface of the release layer can be easily obtained.
The pulp forming the paper substrate preferably contains 50% by mass or more, more preferably 80% by mass or more, of hardwood bleached kraft pulp (LBKP) having a freeness after disaggregation of 350 to 550 mL.

You may mix | blend a pigment with a paper base material. By blending the pigment into the paper substrate, it is possible to obtain effects such as imparting opacity to the substrate 22 and imparting writing property and sealability to the surface of the substrate 22.
Examples of the pigment include light calcium carbonate, calcined kaolin, white carbon, talc, and titanium oxide. Of these, talc, light calcium carbonate, and white carbon are preferable, and talc and light calcium carbonate are particularly preferable because they are excellent in papermaking suitability (wire wear suitability) and easily stay during papermaking.
When the pigment is blended with the paper base material, the content (ash content) of the pigment in the paper base material is preferably 0.1 to 30% by mass, and more preferably 10 to 20% by mass. If the pigment content is at least the lower limit, the writing property and the stamping property will be good. If the pigment content is less than or equal to the upper limit, sufficient paper strength can be easily obtained.

An auxiliary agent may be blended in the paper base material.
As auxiliary agents, for example, internal sizing agents (higher fatty acids, alkyl ketene dimers, etc.), fixing agents (sulfuric acid bands, cationic polymer electrolytes, etc.), paper strength enhancers (starch, polyacrylamide, polyvinyl alcohol, etc.) .), Cationizing agents, yield improvers, dyes, fluorescent whitening agents, antifungal agents and the like.

For the paper base, a known paper machine such as a long paper machine, a circular paper machine, a Yankee paper machine, a twin wire former, an inclined wire former, and a dryer (Yankee dryer, multi-cylinder dryer, etc.) was used. It can be obtained by papermaking.
The paper substrate may be subjected to a known process such as a calendar process.

The paper base material may be subjected to size processing by a size press or a gate roll for the purpose of adjusting the surface strength, sizing property, and the like.
Examples of the size treatment liquid used for the size treatment include a treatment liquid in which starches, polyvinyl alcohols, polyacrylamides, surface sizing agents, cationic resins, and the like are blended in a solvent. Examples of the surface sizing agent include styrene maleic acid copolymer, olefin copolymer, alkyl ketene dimer compound, alkenyl succinic anhydride compound, styrene-acrylic copolymer, higher fatty acid compound, and petroleum resin. Examples thereof include a sizing agent and a rosin sizing agent.

When performing size processing, the coating amount of the size processing liquid is preferably 0.3 to 5.0 g / m ² in terms of dry mass, and more preferably 0.5 to 3.0 g / m ² . If the coating amount is equal to or greater than the lower limit value, the effect of size treatment can be easily obtained. In addition, when the coating amount exceeds the upper limit value, the effect of the size treatment reaches a peak, and if the coating amount is equal to or less than the upper limit value, it is advantageous in terms of cost.
When the size treatment is performed on both sides, it is preferable that the coating amount of the size treatment liquid is within the above range in terms of the total of both sides.

The basis weight of the paper substrate is preferably ^{40~210g / m 2, 60~120g / m} 2 is more preferable. If the basis weight is equal to or greater than the lower limit, sufficient paper strength can be easily obtained. If the basis weight is less than or equal to the upper limit value, it is easy to reduce the paper thickness.
The density of the paper substrate is preferably 0.55 to 1.00 g / m ³ . If the density is equal to or higher than the lower limit, sufficient paper strength can be easily obtained. When the density is not more than the upper limit value, the writing property and the stamping property are good.

The paper substrate is preferably uncoated paper or single-sided coated paper provided with a coating layer on one side. When the paper substrate is a single-side coated paper, it is preferable that the paper substrate has a coating layer on the back side thereof, that is, on the side where the release layer is not provided, in that good writing property and sealability can be obtained. .
Examples of uncoated paper include high-quality paper, medium-quality paper, and glossy paper. Of these, high-quality paper is preferable in terms of printing ink peeling strength. Examples of the single-sided coated paper include a general printing paper, heat-sensitive recording paper, a sealing layer that suppresses permeation of a paper base material such as an adhesive, and a polyethylene laminate layer.
Examples of the method for providing the coating layer include a method using a blade coater, knife coater, bar coater, air knife coater, die coater, slot die coater, gravure coater and the like.

As the release agent for forming the release layer, a silicone release agent is preferable.
Examples of the silicone release agent include thermosetting release agents (addition-curable silicone release agents, condensation-curable silicone release agents, etc.), electron beam curable silicone release agents, and ultraviolet curable silicone release agents. (Radical curable silicone release agents, cationic curable silicone release agents, mercapto curable silicone release agents, etc.). Among these, an electron beam curable silicone release agent or an ultraviolet curable silicone release agent is preferable from the viewpoint that the curing speed is high and it is difficult to penetrate into the base material 22 and the peeling of each laminated label 20 becomes light. In addition, an ultraviolet curable silicone release agent is more preferable, and a cationic curable silicone release agent is particularly preferable from the viewpoint that capital investment is small.
For the release agent, if necessary, other ultraviolet curable resin, electron beam curable resin, photopolymerization initiator, crosslinking agent, dye, pigment, wetting agent, antifoaming agent, dispersant, antistatic agent, leveling agent, Various auxiliary agents such as a lubricant may be blended.

Dry weight of the release layer is preferably from ^{0.2~2.0g / m 2, 0.5~1.5g / m} 2 is more preferable. If the dry mass of the said peeling layer is more than a lower limit, peeling of each laminated | stacked label 20 will become light. When the dry mass of the release layer is not more than the upper limit value, the writing property and the stamping property are improved.

From the viewpoint that peeling of each laminated label 20 becomes lighter, the smoothness of the surface of the release layer is preferably 30 seconds or more, and more preferably 50 seconds or more. Further, when the surface of the label 20 can be written, the smoothness of the surface of the release layer is preferably 200 seconds or less, and more preferably 150 seconds or less.
In addition, the said smoothness is a value prescribed | regulated by the "Oken type | formula smoothness based on JAPAN TAPPI paper pulp test method No.5-2".

(Pressure-sensitive adhesive layer)
Examples of the pressure-sensitive adhesive that forms the pressure-sensitive adhesive layer 24 include a solvent-type adhesive, an emulsion-type adhesive, and a hot-melt-type adhesive. Among these, a hot-melt pressure-sensitive adhesive is preferable because it is difficult for the pressure-sensitive adhesive to penetrate into the base material 22 and the peeling of each laminated label 20 becomes light.
Examples of the hot melt adhesive include rubber-based hot melt adhesives, ethylene-vinyl acetate copolymers, ethylene-acrylic acid copolymers, and the like. Of these, rubber-based hot-melt pressure-sensitive adhesives are preferable from the viewpoints of stability of adhesive strength, bleeding, and cost.

  Examples of rubber-based hot melt adhesives include styrene-ethylene-butylene-styrene block copolymers (SEBS), styrene-butadiene-styrene block copolymers (SBS), and styrene-isoprene-styrene block copolymers. (SIS), and styrene copolymers such as styrene-ethylene-propylene-styrene block copolymer (SEPS). Of these, SIS is particularly preferable.

The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer 24 includes a styrene copolymer (I) having a weight average molecular weight (Mw) of 1 × 10 ³ or more and less than 1 × 10 ⁵ and a weight average molecular weight (Mw). 1 × 10 ⁵ to 1 × 10 ⁷ styrene copolymer (II). Thereby, the performance of the label 20 becomes difficult to change depending on temperature conditions, and the peelability of each label 20 and the adhesiveness to the article to be stuck can be obtained more stably.
The mass ratio (I) / (II) of the styrene copolymer (I) and the styrene copolymer (II) is preferably 10/1 to 1/10, more preferably 5/1 to 1/5. 2/1 to 1/2 is particularly preferable.

  The pressure-sensitive adhesive layer 24 may contain a tackifier, a softener, a wax, or the like as necessary. The tackifier improves the tackiness of the pressure sensitive adhesive layer 24. The softener improves device compatibility of the pressure sensitive adhesive layer 24. The wax lowers the instantaneous adhesiveness of the pressure-sensitive adhesive layer 24, and facilitates peeling immediately after application without damaging the article to be applied.

Examples of tackifiers include aliphatic (C5) petroleum resins, aromatic (C9) petroleum resins, copolymerized (C5 / C9) petroleum resins, dicyclopentadiene (DCPD) petroleum resins, and coumarone indene. Examples thereof include resins, acrylic resins, styrene resins, rosins, rosin ester resins, terpene resins, aromatic modified terpene resins, terpene phenol resins, and hydrogenated resins thereof.
Examples of the softener include various plasticizers, polybutene, liquid tackifier resin, polyisobutylene low polymer, polyvinyl isobutyl ether low polymer, lanolin, bulk polymerized rubber, process oil, naphthenic oil, paraffinic oil, additive And sulfur oil.
Preferred examples of the wax include plant waxes, animal waxes, mineral waxes, petroleum waxes, and synthetic waxes, as well as these processed / modified waxes. As the plant wax, carnauba wax and wood wax are more preferable. As the animal wax, beeswax is more preferable. As the mineral wax, montan wax and ozokerite are more preferable. As the petroleum wax, paraffin wax and microcrystalline wax are preferable. As the synthetic wax, Fischer-Tropsch wax, polyethylene wax, polypropylene wax, oil-based (ester, ketones, amide) synthetic wax, and hydrogenated wax are more preferable. As the processed / modified wax, the above-described more preferable wax processed / modified wax is more preferable.
More preferable examples of the wax include paraffin waxes having various melting points of 42 to 73 ° C., microcrystalline waxes having melting points of 50 to 120 ° C., and polyolefin waxes such as polyethylene wax and polypropylene wax.
Polyolefin waxes usually have a molecular weight of about 1,000 to 10,000, that is, those generally known as polyolefin waxes. The polyolefin wax is usually obtained by a high pressure polymerization method, a low pressure polymerization method, or thermal decomposition of a high molecular weight polyolefin.
Specific examples of the processed / modified wax include, for example, those obtained by oxidizing the above-described wax and introducing a polar group such as a hydroxyl group, an ester group, a carboxyl group, an aldehyde group, or a peroxide group into the wax.

  When using a tackifier, 10-70 mass parts is preferable with respect to 100 mass parts of pressure sensitive adhesives, and, as for content of the tackifier in the pressure sensitive adhesive layer 24, 30-60 mass parts is more. Preferably, 30 to 50 parts by mass is particularly preferable. If the content of the tackifier is not less than the lower limit value, excellent adhesive strength can be easily obtained, and it is easy to suppress that the label 20 affixed to the article to be adhered is partially peeled off or completely dropped off. it can. If content of the said tackifier is below an upper limit, it will be easy to suppress that peeling of each label 20 in the laminated label 1 becomes heavy too much.

  The content of the softening agent in the pressure sensitive adhesive layer 24 is preferably 1 to 50 parts by mass, more preferably 5 to 35 parts by mass, and particularly preferably 10 to 25 parts by mass with respect to 100 parts by mass of the pressure sensitive adhesive. preferable. If content of the said softener is more than a lower limit, it will be easy to suppress that the viscosity of a pressure sensitive adhesive becomes high too much. If content of the said softening agent is below an upper limit, it will be easy to suppress that the viscosity of a pressure sensitive adhesive becomes low too much.

  The content of the wax in the pressure-sensitive adhesive layer 24 is preferably 0.1 to 25 parts by mass, more preferably 0.5 to 15 parts by mass with respect to 100 parts by mass of the pressure-sensitive adhesive. Part is particularly preferred. If the content of the wax is equal to or higher than the lower limit, the label can be easily peeled off without damaging the article to be stuck for a short time after sticking. If the content of the wax is not more than the upper limit value, sufficient adhesive strength can be obtained.

5-60 g / m < ² > is preferable and, as for the dry mass of the pressure sensitive adhesive layer 16, 10-30 g / m < ² > is more preferable. If the dry mass of the pressure sensitive adhesive layer 16 is more than a lower limit, sufficient adhesive performance will be obtained. If the dry mass of the pressure-sensitive adhesive layer 16 is not more than the upper limit value, it is economically excellent.

  3-20N / 10mm is preferable, as for the 180 degree peeling adhesive force measured based on JISZ0237 of the pressure sensitive adhesive layer 24, 4-16N / 10mm is more preferable, and 5-14N / 10mm is especially preferable. If the 180 ° peeling adhesive strength is equal to or higher than the lower limit, it is possible to prevent the label 20 attached to the article to be attached from being partially peeled off or completely dropped off. If the 180 ° peeling adhesive strength is less than or equal to the upper limit value, the peeling of each label 20 laminated in the laminated label 1 becomes light, and the label 20 can be attached easily.

The inclination angle of the pressure-sensitive adhesive layer 24 measured in accordance with JIS Z 0237 is 30 ° in that the label 20 can be easily peeled off without damaging the article to be applied in a short time after the label 20 is applied. The inclined ball tack is preferably 10 or less, and more preferably 5 or less. Further, it is preferable that the pressure-sensitive adhesive layer 24 has an inclination type ball tack of 30 ° with an inclination angle of 1 or more.
The inclined ball tack of the pressure-sensitive adhesive layer 24 having an inclination angle of 30 ° can be adjusted by using wax or the like. Specifically, by increasing the amount of wax used, it is possible to reduce the inclined ball tack of the pressure-sensitive adhesive layer 24 with an inclination angle of 30 °.

The storage elastic modulus of the pressure sensitive adhesive layer 24 measured in the range of 0 ° C. or more and 60 ° C. or less is preferably 5 × 10 ³ or more and 5 × 10 ⁶ or less. That is, the storage elastic modulus of the pressure-sensitive adhesive layer 24 is in the range of 5 × 10 ³ or more and 5 × 10 ⁶ or less in any temperature condition within the range of 0 ° C. or more and 60 ° C. or less. Is preferred. If the storage elastic modulus is equal to or higher than the lower limit value, it is easy to peel each label 20 from the laminated label 1. When the storage elastic modulus is equal to or lower than the upper limit value, sufficient adhesive strength is obtained, and the label 20 attached to the article to be applied is difficult to peel off. Further, since the storage elastic modulus is in the above-mentioned range in a wide temperature range of 0 ° C. or more and 60 ° C. or less, the influence of the temperature environment on the performance of the laminated label 1 is small, and the label 20 from the laminated label 1 The peelability and the adhesiveness of the label 20 to the attached article to be attached can be stably obtained.
The storage elastic modulus of the pressure-sensitive adhesive layer 24 measured in the range of 0 ° C. or more and 60 ° C. or less is more preferably 5 × 10 ³ or more and 1 × 10 ⁶ or less, and preferably 1 × 10 ⁴ or more and 1 × 10 ⁵ or less. Particularly preferred.
The storage elastic modulus is measured by a dynamic viscoelasticity measuring device. The storage elastic modulus of the pressure-sensitive adhesive layer 24 from 0 ° C. to 60 ° C. is adjusted by, for example, using the styrene copolymer (I) and the styrene copolymer (II) in a specific ratio. it can.

  The use of the laminated label of the present invention is not particularly limited. For example, for the purpose of displaying warnings, warnings, etc. on the surface of garbage bags, for logistics such as packing labels, process management for management labels, etc. For example.

(Production method)
It does not specifically limit as a manufacturing method of the laminated label 1, For example, the method which has the following process (X1) and process (X2) is mentioned.
Step (X1): A step of obtaining the label 20 by forming the pressure-sensitive adhesive layer 24 on the back surface 22b of the base material 22 so that the turning margin 26 is provided on the first short side 20a.
Step (X2): A step of obtaining a laminated label 1 by laminating a plurality of labels 20 on the release paper 10 so that the respective labels 20 are aligned.

Step (X1):
For example, the pressure-sensitive adhesive component containing a pressure-sensitive pressure-sensitive adhesive or the like is not applied to the back surface 22b of the base material 22 on the portion of the base material 22 that is to be the non-adhesive region 28 and the non-adhesive portion 30b of the turning margin 26. To form a pressure sensitive adhesive layer 24 to obtain a plurality of labels 20.
When using a base material having a release layer on the surface of the paper base material as the base material 22, a release agent is applied to the surface of the paper base material and cured to form a release layer to obtain the base material 22. The release layer may be formed before the pressure-sensitive adhesive layer 24 is formed or after the pressure-sensitive adhesive layer 24 is formed.
The amount of the release agent applied is preferably such that the dry mass of the release layer falls within the above-described range.
The method for applying the release agent is not particularly limited, and examples thereof include a method using a bar coater, a multi-stage roll coater, an air knife coater, a gravure coater, an offset gravure coater and the like. Of these, flexographic printing is preferred.
Examples of the apparatus for curing the release agent include a hot air dryer, a far infrared dryer, an ultraviolet irradiation device, and an electron beam irradiation device.

The coating amount of the pressure-sensitive adhesive component is preferably such that the dry mass of the pressure-sensitive pressure-sensitive adhesive layer 24 is within the above-described range.
The method for applying the pressure-sensitive adhesive component is not particularly limited, and when a hot-melt type pressure-sensitive adhesive is used as the pressure-sensitive pressure-sensitive adhesive, examples thereof include a relief printing method and a method using a hot-melt die coater. Moreover, when using a solvent-type adhesive and an emulsion-type adhesive, the method of using a roll coater, a reverse roll coater, a knife coater, a bar coater, an air knife coater, a die coater, a slot die coater, a gear in die coater etc. is mentioned, for example.

Step (X2):
A method for obtaining a laminated label 1 by laminating a plurality of labels 20 is not particularly limited, and for example, using a frame body having an open top and a bottom surface substantially the same shape as the label 20, Examples include a method of sequentially supplying labels 20 to the frame body from above and laminating the labels 20 while aligning the overlaps of the labels 20 (see, for example, Japanese Patent Application Laid-Open No. 2000-135750).
Specifically, a predetermined number of labels 20 are stacked while a plurality of labels 20 are sequentially dropped from above with the pressure-sensitive adhesive layer 24 formed on the back surface 22b of the substrate 22 facing upward. For example, a method of dropping the release paper 10 and laminating the labels 20 continuously while inserting the release paper 10 at a predetermined interval may be used. The label 20 and the release paper 10 may be dropped from directly above into the frame, or may be dropped obliquely from above. In addition, the lamination operation may be performed with the surface 22a of the base material 22 facing up as long as the pressure-sensitive adhesive layer 24 of the label 20 is not adhered to an apparatus or the like.

The method for obtaining the laminated label 1 is not limited to the above method. For example, the laminated label 1 may be manufactured by the following method.
A pressure-sensitive pressure-sensitive adhesive layer is formed on a large-sized substrate, and a plurality of original labels are formed on which a plurality of portions to be the labels 20 having the turning margin 26 are formed. Thereafter, the plurality of label original fabrics are sequentially laminated with the same overlap, and cut into a predetermined size to cut out the plurality of laminated labels 1.
Lamination of the label original fabric can be performed by the same method as the lamination of the label 20.

[Second Embodiment]
Hereinafter, a second embodiment of the laminated label of the present invention will be described with reference to FIGS. 1, 2, and 5.
As shown in FIGS. 1, 2, and 5, the laminated label 2 includes a rectangular release paper 10 and a plurality of congruent rectangular labels 20 </ b> A stacked on the release paper 10. It is. The laminated label 2 is the same as the laminated label 1 except that it has a label 20 </ b> A instead of the label 20. The same portions of the laminated label 2 as those of the laminated label 1 are denoted by the same reference numerals and description thereof is omitted.
As shown in FIG. 5, each label 20 </ b> A includes a rectangular base material 22 and a pressure-sensitive adhesive layer 24 that is provided on the back surface 22 b of the base material 22 and can be peeled off from the front surface 22 a. Each label 20 </ b> A is laminated so that the pressure-sensitive adhesive layer 24 faces the release paper 10, similarly to the label 20 in the laminated label 1.
In each label 20A, a rectangular turning margin 26A is provided on the first short side 20a (the left side in FIG. 1). As described above, the laminated label 1 can be peeled off one by one by using the rectangular turning margin 26A formed on the first short side 20a of a plurality of labels 20A laminated on the release paper 10. It is like that.

(Turning cost)
The turning margin 26A is provided on the first short side 20a of the label 20A. The turning margin 26A is composed of two regions: a rectangular non-adhesive region 28A located outside the label 20A and a rectangular weak adhesive region 30A located closer to the center of the label 20 than the non-adhesive region 28A.
The non-adhesive region 28A is a rectangular region located on the outer side of the label 20A and having a longitudinal direction along the first short side 20a. In the non-adhesive region 28 </ b> A, a paste-killing layer 32 is provided on the pressure-sensitive adhesive layer 24. That is, the non-adhesive region 28A is a region having no adhesive force.

The weak adhesive region 30A is a rectangular region in which the direction along the first short side 20a is the longitudinal direction on the center side of the label 20A relative to the non-adhesive region 28A. The weak adhesive region 30 </ b> A has two rectangular adhesive portions 30 c whose outermost layer on the back side of the substrate 22 is a pressure-sensitive adhesive layer 24, and a rectangular adhesive layer 32 provided on the pressure-sensitive adhesive layer 24. This is a region where two non-adhesive portions 30d are mixed. The adhesive portion 30c and the non-adhesive portion 30d are alternately striped in the order of the adhesive portion 30c, the non-adhesive portion 30d, the adhesive portion 30c, and the non-adhesive portion 30d so as to be parallel to the first short side 20a of the label 20A. Is arranged.
In this way, the turning margin 26A of the label 20A is formed except that the non-adhesive region 28A and the non-adhesive portion 30d having no adhesive force are formed by providing the paste-killing layer 32 on the pressure-sensitive adhesive layer 24. This is the same form as the turning allowance 26 of the label 20.
The weakly adhesive region 30A has an adhesive force as an entire region because the adhesive portion 30c having adhesive force and the non-adhesive portion 30d not having adhesive force are mixed, but the portion other than the turning margin 26A in the label 20A The adhesive strength is low compared to.

Dry weight of glue killing layer 32 is preferably ^{0.01~20g / m 2, 0.1~10g / m} 2 is more preferable. If the dry mass is less than the lower limit value, the pressure-sensitive adhesive layer 24 under the paste-killing layer 32 may not be sufficiently prevented from sticking. When the dry mass is larger than the upper limit value, only the portion to which the paste-killing layer 32 has been applied becomes too thick, so that when the laminated label is formed, only the portion swells and the appearance may not be good. .

  Any adhesive can be used as the adhesive for forming the adhesive layer 32 as long as the adhesive of the pressure-sensitive adhesive layer 24 can be prevented. For offset printing, flexographic printing, and lator press printing (letter printing). Printing ink, medium ink, and paste-dedicated ink used for each printing are preferable, and ultraviolet curable ink is particularly preferable.

  In the laminated label 2, although the weak adhesive region 30A in the turning margin 26A has adhesive strength, the adhesive portion 30c and the non-adhesive portion 30d are mixed in the weak adhesive region 30A, so that the weak in the turning margin 26A. Peeling of the adhesive area 30A is light. Therefore, in the laminated label 2, it is easy to peel off each of the laminated labels 20A one by one by using the turning margin 26A. Further, in the laminated label 2, when the peeled label 20A is stuck on the article to be pasted, the weak adhesive region 30A in the turning margin 26A of the label 20A is adhered to the article to be stuck. For this reason, the portion of the label 20A that floats from the surface of the article to be pasted becomes only the non-adhesive region 28A in the turning margin 26A and becomes small. Therefore, even when the articles to be pasted are rubbed with each other or the articles to be pasted are rubbed with other objects, the label 20A is prevented from being peeled off due to the turning margin 26A.

  The area and width of the turning margin 26A, the ratio of the area of the non-adhesive region 28A to the area of the turning margin 26A, the width of the non-adhesive region 28A, the ratio of the area of the adhesive portion 30c of the weakly adhesive area 30A to the area of the turning margin 26A, and The preferable range of the ratio of the area of the adhesive portion 30c to the area of the weakly adhesive region 30A in the turning margin 26A is the same as that in the first embodiment.

(Production method)
It does not specifically limit as a manufacturing method of the laminated label 2, For example, the method which has the following process (Y1) and process (Y2) is mentioned.
Step (Y1): The pressure-sensitive adhesive layer 24 is formed on the entire back surface 22b of the substrate 22, and the paste-killing layer 32 is formed on the pressure-sensitive adhesive layer 24 so that the turning margin 26A is provided on the first short side 20a. Forming the label 20A.
Step (Y2): A step of obtaining a laminated label 2 by laminating a plurality of labels 20A on the release paper 10 so that the respective labels 20A are aligned.

Step (Y1):
For example, the pressure-sensitive adhesive layer 24 is formed by applying a pressure-sensitive adhesive component including a pressure-sensitive adhesive or the like to the entire back surface 22 b of the substrate 22. Thereafter, a paste-killing layer 32 was formed on the pressure-sensitive adhesive layer 24 at the non-adhesive region 28A and the non-adhesive portion 30d of the turning margin 26A, and the turning margin 26A was provided on the first short side 20a. A plurality of labels 20A are obtained.
When using the base material which has a peeling layer on the surface of a paper base material as the base material 22, this base material can be obtained by the same method as the method demonstrated by process (X1). The release layer may be formed before the pressure-sensitive adhesive layer 24 is formed or after the pressure-sensitive adhesive layer 24 is formed.
The adhesive component can be applied in the same manner as in the step (X1).

The amount of the paste-killing agent applied when forming the paste-killing layer 32 is preferably such that the dry mass of the paste-killing layer 32 falls within the above-described range.
As a method for forming the paste-killing layer 32, offset printing, flexographic printing, and lator press printing (letter printing) are preferable. From the viewpoint of quick drying, ultraviolet curing offset printing, ultraviolet curing flexographic printing, ultraviolet curing method. From the viewpoint of increasing the thickness of the paste-killing layer, UV curable flexographic printing is particularly preferable.

Step (Y2):
As a method for obtaining a laminated label 2 by aligning and laminating a plurality of labels 20A, the same method as described in the step (X2) can be employed.

  The method for obtaining the laminated label 2 is not limited to the above method. For example, the method shown below is mentioned. A pressure-sensitive adhesive layer and a paste-killing layer are formed on a large-sized substrate, and a plurality of original labels are formed on which a plurality of portions to be the label 20A having the turning margin 26A are formed. Thereafter, the plurality of label original fabrics are sequentially stacked with the same overlap, and cut into a predetermined size to cut out a plurality of stacked labels 2.

[Other Embodiments]
The laminated label of the present invention is not limited to the laminated labels 1 and 2 described above.
For example, the laminated label of the present invention may be a laminate of a plurality of labels provided with turning margins at the corners of the label. Specifically, for example, the laminated label of the present invention may be a laminate of a plurality of labels 20B illustrated in FIG. The same parts as the label 20 in the label 20B are denoted by the same reference numerals, and the description thereof is omitted.
In the label 20B, a triangular area at one corner 34 is a turning margin 26B. The turning margin 26B is composed of two regions, a triangular non-adhesive region 28B located outside the label 20B, and a trapezoidal weak adhesive region 30B located closer to the center of the label 20B than the non-adhesive region 28B.
The non-adhesive region 28 </ b> B is a triangular region located outside the label 20 </ b> B at the corner 34. The pressure-sensitive adhesive layer 24 is not provided in the non-adhesive region 28B. The weak adhesive region 30B is a trapezoidal region on the center side of the label 20 with respect to the non-adhesive region 28B at the corner 34. The weak adhesive region 30B includes two trapezoidal adhesive portions 30e provided with the pressure-sensitive adhesive layer 24 as the outermost layer on the back side of the base material 22, and two non-adhesive trapezoids provided with the pressure-sensitive adhesive layer 24. This is a region where the adhesive portion 30f is mixed. The adhesive portion 30e and the non-adhesive portion 30f are alternately arranged in the form of stripes from the outside of the label 20 in the order of the adhesive portion 30e, the non-adhesive portion 30f, the adhesive portion 30e, and the non-adhesive portion 30f.

  The area of the turn allowance 26B, the ratio of the area of the non-adhesive region 28B to the area of the turn allowance 26B, the ratio of the area of the adhesive portion 30e of the weak adhesive region 30B to the area of the turn allowance 26B, and the weak adhesive region 30B in the turn allowance 26B The preferred range of the ratio of the area of the adhesive portion 30e to the area of the same is the same as in the case of the first embodiment.

Even in a laminated label in which a plurality of labels 20B are laminated, each of the laminated labels 20B can be easily peeled one by one by using the turning margin 26B. Further, when the label 20B peeled off from the laminated label is pasted on an article to be pasted, the label 20B is hardly peeled off from the pasted article.
In the case where the laminated label of the present invention is a laminated label in which a plurality of labels provided with turning margins are provided at the corners of the label, the non-adhesive region and the non-adhesive portion in the turning margin are on the pressure-sensitive adhesive layer. You may form by providing a paste-killing layer.

In the laminated label of the present invention, the shape of the turning margin formed on the side of the label may be a semicircular shape. When the turning margin is formed on the side of the label, the boundary line between the non-adhesive region and the weakly adhesive region in the turning margin is preferably parallel to the side where the turning margin is provided. In the laminated label of the present invention, the shape of the turning margin formed at the corner of the label may be a sector shape. When the turning margin is formed at the corner of the label, the shape of the non-adhesive region in the turning margin is preferably similar to the shape of the turning margin.
In addition, each label in the laminated label of the present invention may be corner-dropped so that the corner has a rounded shape, including the corner provided with the turning margin, and the corner tip portion is linearly It may be dropped.
Moreover, in the laminated label of this invention, the shape of a label is not limited to a rectangle, Polygons, such as a hexagon, may be sufficient.

In the laminated label of the present invention, the adhesive portion and the non-adhesive portion may be mixed by arranging the adhesive portions in a dot shape or a lattice shape in the weak adhesive region of the turning margin of each label. .
In addition, the laminated label of the present invention is a combination of a non-adhesive region in which no pressure-sensitive adhesive layer is provided and a weak adhesive region having a non-adhesive part in which a paste-killing layer is provided on the pressure-sensitive adhesive layer. It may be a laminate of a plurality of labels provided with a turning margin. In addition, the laminated label of the present invention is a combination of a non-adhesive region provided with a paste-killing layer on a pressure-sensitive adhesive layer and a weak adhesive region having a non-adhesive part not provided with a pressure-sensitive adhesive layer. It may be a laminate of a plurality of labels provided with a turning margin.
Further, the laminated label of the present invention may be a laminate of a plurality of labels provided with turning margins on two or more sides of the label, and is provided with turning margins at two or more corners of the label. A plurality of labels may be laminated. In addition, the laminated label of the present invention may be a laminate of a plurality of labels in which turning margins are provided at both corners and sides of the label.

In the laminated label of the present invention, when using a substrate having a release layer on the surface of the paper substrate, if necessary, a pattern, characters, eye marks, etc. are provided on at least one of the front and back surfaces of the paper substrate. Printing may be performed, and a medium ink may be printed on the entire surface. As the printing method, letterpress printing, offset printing, and flexographic printing are preferable. The ink to be used is preferably an ultraviolet curable ink, and more preferably an amineless ultraviolet curable ink containing little or no amine.
Further, the laminated label of the present invention may not have release paper.

  Moreover, in the laminated label of this invention, the area | region where the pressure sensitive adhesive layer is not provided may be provided in the area | regions other than the turning allowance in a base material in the range which does not show the function as a turning allowance. For example, if a region (dry edge) having a very small width and no pressure-sensitive adhesive layer is provided along all sides of the substrate, the cutting blade at the time of label production can be protected. Further, there may be a portion where the pressure-sensitive adhesive layer is not provided in an inner region away from the side of the label.

  In addition, each label in the laminated label of the present invention may have a form in which a pressure-sensitive adhesive layer is formed in a ring shape at an edge portion of the region in a region other than the turning margin in the base material. Such an embodiment can adjust the adhesive strength of the label from strong to weak, by adjusting the type of pressure-sensitive adhesive, the shape and width of the pressure-sensitive adhesive layer and the release layer provided as necessary. It is preferable in that it can be controlled.

  1, 2 ... laminated label, 10 ... release paper, 20, 20A, 20B ... label, 20a ... first short side, 22 ... substrate, 22a ... surface, 22b ... back side, 24 ... pressure sensitive adhesive layer, 26, 26A, 26B ... turning margin, 28, 28A, 28B ... non-adhesive region, 30, 30A, 30B ... weak adhesive region 30a, 30c, 30e ... adhesive part, 30b, 30d, 30f ... non-adhesive part, 32 ... adhesive layer, 34 ... horn.

Claims (2)

A plurality of labels having a base material and a pressure-sensitive adhesive layer provided on the back surface of the base material and peelable from the surface of the base material are laminated,
A turning margin is formed on at least one corner or side of each said label;
The turning margin consists of a non-adhesive region located outside the label, and a weak adhesive region located on the center side of the label with respect to the non-adhesive region,
The non-adhesive region is a region where the pressure-sensitive adhesive layer is not provided,
The weak adhesive region is a plurality of adhesive portions provided with the pressure sensitive adhesive layer as an outermost layer on the back side of the label, and a plurality of non-adhesive portions not provided with the pressure sensitive adhesive layer, A laminated label, which is an area arranged alternately from the non-adhesive area side toward the center side of the label. A plurality of labels having a base material and a pressure-sensitive adhesive layer provided on the back surface of the base material and peelable from the surface of the base material are laminated,
A turning margin is formed on at least one corner or side of each said label;
The turning margin consists of a non-adhesive region located outside the label, and a weak adhesive region located on the center side of the label with respect to the non-adhesive region,
The non-adhesive region is a region where a paste-killing layer is provided on the pressure-sensitive adhesive layer,
The weak adhesive region includes a plurality of adhesive portions whose outermost layer on the back side of the label is the pressure-sensitive adhesive layer, and a plurality of non-adhesive portions provided with a paste-killing layer on the pressure-sensitive adhesive layer. A laminated label, which is an area alternately arranged from the non-adhesive area side toward the center side of the label.

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