JP2012022214A - Roll shrink label and container with label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll shrink label with which an adhesion object can be peeled by hand without an adhesive residue and the adhesion object can be easily peeled without the adhesive residue from a base substance, by hot water or hot aqueous alkali solution.SOLUTION: A roll shrink label which is wound around a circumference of a container and attached comprises: a base film having a thickness of 5-40 μm; and an adhesive layer which is provided on a surface of the base film and formed of a hot melt adhesive of which softening point is higher than 95°C.

Description

  The present invention is a roll shrink label suitably used for glass bottles, PET (polyethylene terephthalate) bottles, etc. used in soft drinks, seasonings, detergents, shampoos, edible oils, cosmetics, pharmaceuticals, etc. The label is easily peeled off from a container such as a glass bottle or PET bottle when used in a hot alkaline aqueous solution after use, and a shrink label suitable for reusing the container and This is a labeled container.

  In recent years, the amount of PET bottles used for beverages has increased along with the amount of PET bottles produced. The used PET bottles are discharged as garbage, but a recycling system has been established by the Recycled Resource Utilization Promotion Law so that the amount of the garbage is not increased as much as possible and can be recycled as resources. In recycling PET bottles, the PET bottles collected after use are cut into 8 mm square pellets and soaked in hot water (85 ° C) or hot alkali (85-90 ° C 1.5% NaOH) for about 15 minutes for labeling. After removing the label, the label is removed by washing with water, drying, and air selection to regenerate PET pellets.

  For this reason, PET bottle labels include stretch labels, shrink labels, roll labels using alkali-dispersed hot-melt adhesives (Patent Documents 1 and 2), and the like. Stretch labels use the principle of rubber bands that return to the original state when they are stretched and released. The stretched label is stretched over a plastic bottle and then released to return the label to its original shape. It could not be used for uneven PET bottles (atypical bottles) that have a low label restoring force and emphasize design. In addition, there is a system in which a shrink bottle that has been formed into a cylindrical shape is covered with a labeler while the PET bottle is covered with a label, and the film is contracted by the heat of a heater or steam, thereby closely attaching the film to the container. However, this method has a problem in that the cost is high because the label needs to be processed into a cylindrical shape in advance. On the other hand, a roll label using an alkali-dispersed hot melt pressure-sensitive adhesive has a problem that it cannot be used for uneven PET bottles (atypical bottles) that emphasize design.

  Patent Document 3 proposes to use a UV (ultraviolet) curable hot melt adhesive / UV adhesive for the roll shrink label, but it is difficult to control the UV irradiation amount of the UV curable adhesive. In addition, since hot water or hot alkali is not dispersed, problems such as incompatibility with the voluntary regulations of the PET bottle recycling promotion council, the structure of the labeler becomes complicated, and the price of the labeler increases.

JP 2005-220244 A Japanese Patent No. 4278704 JP 2008-145498 A

  An object of the present invention is a roll shrink label excellent in recyclability, which can peel off an adhesive without any adhesive residue, and can easily peel the adhesive from a substrate with hot water or a hot alkaline aqueous solution without adhesive residue. Is to provide.

  In order to recycle PET bottles, the PET Bottle Recycling Promotion Council, together with related organizations and ministries, will proceed with the development of various laws and guidelines regarding PET bottles. Created self-design guidelines for PET bottles and is conducting self-regulation. In this voluntary regulation, either a stretch label or shrink label, or a film or paper label such as an OPP (stretched polypropylene) film, PE (polyethylene) film, or PET film, and either hot water peeling or hot alkali peeling The label had to be peeled off.

  The method for peeling the label from the PET bottle is based on the “designated PET bottle self-regulation guidelines” issued by the PET Bottle Recycling Promotion Council. That is, (1) Physical peeling test: When a PET bottle that has been compressed and crushed is peeled off with a hand or a simple tool such as a cutter, and the adhesive does not remain on the PET bottle, it is physically peelable. (2) Hot water peeling test: Pellets made by pulverizing bottles with labels and printing are immersed in hot water at 85 ° C. at a pellet concentration of 10% (weight ratio), and slowly stirred for 15 minutes. Next, filtered through a filter and visually inspected the pellet. When the label peels off and printing ink, adhesive, etc. do not remain in the bottle, there is hot water peelability. (3) Thermal alkali peel test: label, print, etc. The pellets produced by pulverizing the applied bottles are immersed in a 1.5% aqueous alkali solution at 90 ° C. at a pellet concentration of 10% (weight ratio) and slowly stirred for 15 minutes. Subsequently, it filters with a filter and visually observes a pellet. When the label peels off and printing ink, adhesive, etc. do not remain in the bottle, it is judged that there is a hot alkali peelability.

  The present invention is a hot melt pressure-sensitive adhesive for roll-shrink labels of PET bottles such as soft drinks and soy sauce, which is suitable for the 'Independent Design Guidelines for Type 2 Designated PET Bottles' issued by the PET Bottle Recycling Promotion Council. The label does not peel off even if it is placed in water when cooling during use, but after collection, pellets made by pulverizing the bottle are heated to 85 ° C in hot water or 90 ° C alkaline aqueous solution with a pellet concentration of 10% ( A roll shrink label that can be used for uneven PET bottles (atypical bottles) is also provided without the hot melt adhesive adhering to the pellets.

  Moreover, this invention provides the container which adhere | attached the roll-wrap label using the roll shrink label which has the said characteristic further.

The present invention relates to the following roll shrink labels and labeled containers.
[1] A roll shrink label that is wound around the outer periphery of a container and attached.
A roll shrink label comprising: a base film having a thickness of 10 to 40 μm; and an adhesive layer formed on the surface and formed from a hot melt adhesive having a softening point higher than 95 ° C.
[2] The roll according to [1] above, wherein the base film is provided with an adhesive layer at one end (I) and has no adhesive layer at the other opposite end (II). Shrink label.
[3] The roll shrink label [4] softening point of 95 described above, wherein the end (I) is a fixed portion with the other part of the base film itself after winding. A hot-melt pressure-sensitive adhesive having a temperature higher than 0 ° C. comprises a thermoplastic elastomer (A), a tackifier (B), and a synthetic oil (C), and the thermoplastic elastomer (A) has a diblock content of 70. The roll shrink label according to any one of [1] to [3] above, wherein the roll shrink label is a styrene-based elastomer having a styrene ratio of 10 to 40% by weight or less.
[5] The roll shrink label according to any one of [1] to [4], wherein the adhesive layer has a width of 3 mm or more.
[6] The adhesive layer according to any one of [1] to [5] above, wherein the adhesive layer is formed by being applied onto a roll and then transferred onto a base film. Roll shrink label as described.
[7] The above-mentioned adhesive layer is characterized in that the adhesive is formed by applying an adhesive on a substrate film by any one of curtain spray, spiral spray, dot or bead coating methods. The roll shrink label according to any one of items [1] to [5].
[8] A labeled container in which the roll shrink label according to any one of [1] to [7] is attached to a container.
[9] A roll shrink comprising a base film having a thickness of 5 to 40 μm, and an adhesive layer provided on the surface and formed from a hot melt adhesive having a softening point higher than 95 ° C. A first step of producing a circumferential label by winding the label around a vertically arranged cylinder and attaching the adhesive layer to another part of the base film itself:
A second step of extracting the cylinder and inserting a cylindrical container into the circumferential label:
Next, a method for producing a labeled container, comprising: a third step of performing heat shrinkage treatment and mounting the circumferential label around the container.

  The roll shrink label of the present invention can be used for uneven (atypical) bottles, and the label does not peel off when the container is used. However, when the container is recycled after use, the 8 mm square pellet is heated to 85 ° C. with hot water. By simply stirring for 15 minutes in medium or 90 ° C 1.5% NaOH aqueous solution, the label peels off from the PET bottle, and the label or hot melt adhesive does not reattach to the PET bottle, making it suitable for recyclability. Yes.

In addition, the roll shrink label of the present invention is peeled off without any adhesive residue by peeling off the label with hot water or hot alkaline water in the “Voluntary Regulation Guidelines for Designated PET Bottles” issued by the PET Bottle Recycling Promotion Council. Since it satisfies the requirement that it can be used, it can be preferably used as a label for a PET bottle.
More preferably, the hot melt pressure-sensitive adhesive does not remain in the PET bottle when the roll shrink label is peeled off from the PET bottle.

  Hereinafter, the roll shrink label of the present invention will be described in more detail.

  First, the roll shrink label of the present invention is a roll shrink label that is wound around and mounted on the outer periphery of a container and has a base film with a thickness of 5 to 40 μm and a softening point of 95 ° C. provided on the surface. It is characterized by comprising an adhesive layer formed from a higher hot melt adhesive.

The roll shrink label of the present invention is usually provided with an adhesive layer on one end [end (I)] of the base film, and on the other end [end (II)] facing. The adhesive layer is not provided.
The end (I) is a part where the label is processed into a circumferential shape and is adhered to the base film itself by the adhesive layer.
Specifically, the roll shrink label of the present invention is wrapped around a vertically arranged cylinder, and the adhesive layer provided at the end (I) is attached to another part of the base film itself, A first step of manufacturing a circumferential label, a second step of extracting a cylinder and inserting a cylindrical container into the circumferential label, a heat shrinking treatment, and the circumferential label A labeled container is obtained by a manufacturing process including a third step of mounting around the container.

The base film having a thickness of 5 to 40 μm constituting the roll shrink label is a stretched polyester film, a stretched polystyrene film, a stretched polyolefin film, a polylactic acid film, a foamed polyolefin film, and a stretched polyester-polystyrene coextrusion. It is a film or a polystyrene foam film. Or the laminated film of a nonwoven fabric and the said film may be sufficient. Among these, a stretched polyester film, a stretched polystyrene film, a stretched polyolefin film, a polylactic acid film, a foamed polyolefin film, a foamed polystyrene film, a laminate film of a nonwoven fabric and a shrink film, and a stretched polyester-polystyrene coextruded film One or more films selected from the group consisting of: The stretched film may be uniaxially stretched or biaxially stretched, and in the case of a uniaxially stretched film, it may be longitudinally uniaxially stretched or laterally uniaxially stretched. However, in the case of a shrink label in which a shrink label is previously attached to a container and then subjected to heat shrink treatment, a laterally uniaxially stretched film is suitable, whereas the wound label of the present invention is used as a shrink label. However, it is not limited to a laterally uniaxially stretched film, and any of laterally uniaxially stretched, longitudinally uniaxially stretched, and biaxially stretched films can be suitably used.
The thickness of the film is 5 μm or more and 40 μm or less, more preferably 10 μm or more and 30 μm or less. If the thickness is less than 5 μm, the film is too thin and cannot be mounted well due to problems such as static electricity. On the other hand, if it is thicker than 40 μm, when the shrink film is shrunk by a 90 ° C. shrink tunnel, the tensile strength is strong and the hot melt adhesive is peeled off.

On the other hand, in order for the label of the present invention to exhibit the effect as a roll shrink label, it is preferable that the heat shrinkage rate of the base film in the stretching direction is 5 to 85%. In addition, the heat shrinkage rate in this invention is a heat shrinkage rate by 100 degreeC hot water, Comprising: The heat shrinkage rate of an extending | stretching direction shall follow a following formula. Therefore, in the case of a longitudinally uniaxially stretched film, since the shrinking direction is the film flow direction, the thermal shrinkage rate in the flow direction is 5 to 85%, and in the case of a laterally uniaxially stretched film, the film shrinks in the film width direction. The heat shrinkage ratio in the film width direction is 5 to 85%. In the case of a biaxially stretched film, the thermal shrinkage rate is preferably within the above range with respect to any stretching method.
Thermal contraction rate (%) = (dimension before heating−dimension after heating) / (dimension before heating) × 100

  Furthermore, various additives such as a lubricant, a filler, a heat stabilizer, an antioxidant, an ultraviolet absorber, an antistatic agent, a flame retardant, and a colorant are added to the base film layer as necessary. May be. Further, the surface of the base film layer may be subjected to conventional surface treatment such as corona discharge treatment, plasma treatment, flame treatment, acid treatment, etc. in order to improve printability.

  The base film layer is not limited to a single layer of the film, and may be a laminated film of two or more films. Further, a vapor deposition film of silicon oxide, aluminum oxide, aluminum, or the like is formed on these films. It may be provided. The thickness of the base material is preferably about 5 to 40 μm.

  Containers to which the roll shrink label of the present invention is applied include glass containers such as glass bottles and PET (polyethylene terephthalate) bottles used for soft drinks, seasonings, detergents, shampoos, edible oils, cosmetics, pharmaceuticals, etc. Such as plastic containers and paper containers. The label of the present invention is preferably used for PET bottle containers from the viewpoint of bottle recycling, but can also be used for other plastic containers, glass containers, and paper.

The hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. preferably contains a thermoplastic elastomer (A), a tackifier (B) and a synthetic oil (C).
The thermoplastic elastomer (A) is a styrenic elastomer and is a styrene / butadiene block copolymer (SB, diblock), (SBS, triblock), styrene / isoprene block copolymer (S- I, diblock), (S-I-S, triblock), and styrene / butadiene-isoprene block copolymer (SB-I, diblock), (SB / IB, triblock) And hydrogenated products of these block copolymers, for example, hydrogenated styrene / butadiene / styrene block copolymers (SBS), hydrogenated styrene / isoprene / styrene block copolymers (SEPS), Acid-modified styrenic elastomers as described above, and also styrene and α-methylstyrene in addition to styrene in the styrene block. A copolymer of an aromatic vinyl compound is also exemplified.
More preferably, the thermoplastic elastomer (A) is a styrene / isoprene block copolymer (SI, diblock), (SIS, triblock).

  The thermoplastic elastomer (A) may be used alone or in combination of two or more, and may contain a diblock and a triblock. The contained diblock is a thermoplastic elastomer ( It is 70% by weight or less, preferably 20% by weight or less, out of the total 100% by weight of A). If it is not 70 weight% or less, the stuck adhesive layer may peel off immediately.

  The ratio of styrene contained in these thermoplastic elastomers (A) is 10 to 40% by weight, preferably 15 to 35% by weight. If it is less than 10% by weight, the cohesive strength of the pressure-sensitive adhesive decreases. When it exceeds 40% by weight, the fluidity is deteriorated.

  As the tackifier (B) used in the present invention, hydrogenated aliphatic, alicyclic and aromatic petroleum resins and terpene resins are preferred because of their excellent weather resistance. Specific examples of a more preferable solid tackifying resin include, for example, a hydrogenated alicyclic petroleum resin manufactured by Arakawa Chemical Co., Ltd., trade name: Archon, and a terpene resin, Yashara Chemical Co., Ltd., trade name: Clearon. Etc. These may be used independently and 2 or more types may be used together.

  It is preferable that the softening point of the tackifier (B) constituting the hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. used in the present invention is 90 to 140 ° C. More preferably, it is 100-135 degreeC. If it is less than 90 degreeC, it may become a cause by which an elasticity modulus falls rapidly in a high temperature range, and if it exceeds 140 degreeC, a tack | tuck will lose | disappear in a low temperature range and it may not adhere to a roll shrink label.

  Synthetic oil (D) is an oil generally used as a plasticizer such as rubber and thermoplastic elastomer, a process oil produced in so-called petroleum refining and the like, paraffinic process oil, naphthenic process oil, aromatic It is broadly classified as a family process oil. Process oil is a mixture of aromatic rings, naphthene rings, and paraffin chains. Generally, the aromatic carbon in the total carbon is 30 wt% or more, and the aromatic oil is 35 to 45 wt% in the naphthenic ring carbon. Naphthenics and those with 50% by weight or more of paraffin chain carbon are classified as paraffinic. Paraffinic crude oil is separated into paraffinic oil and aromatic oil by distillation, hydrogenation reforming, solvent extraction, and solvent dewaxing. Naphthenic crude oil is also separated into naphthenic and aromatic oils by distillation and solvent extraction. In the present invention, the synthetic oil is preferably naphthenic oil or paraffinic oil. There are various commercial products under the trade names such as “Diana Fresia” and “Diana Process Oil” from Idemitsu Kosan Co., Ltd., and “Fukor New Flex” and “Fukor Flex” from Fuji Kosan Co., Ltd. Grades are commercially available. Synthetic oil is used in the present invention so as not to lower the adhesive strength at low temperatures.

  When the entire hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. is 100 parts by weight, the amount of the thermoplastic elastomer (A) is 20 parts by weight to 55 parts by weight, preferably 30 parts by weight to 50 parts by weight. It is. If the amount is less than 20 parts by weight or more than 55 parts by weight, it may be difficult to maintain the cohesive force, the adhesiveness may deteriorate, or the roll shrink label may be peeled off when thermally contracted.

  The roll shrink label of the present invention is shrunk with steam, hot water, or the like and fixed around an irregular (atypical) bottle. At this time, at the end (I), when a hot melt adhesive having a softening point of 95 ° C. or lower is used for bonding the labels, the label cannot withstand the shrinking force and peels off from the bonded portion of the labels. End up. The softening point of the hot melt pressure-sensitive adhesive is desirably higher than 95 ° C. and lower than 160 ° C., and more desirably 100 ° C. or higher and 135 ° C. or lower.

It is preferable that the width | variety of the adhesion layer of this invention is 3 mm or more, More preferably, it is 10 mm or more, More preferably, it is 20 mm or more. When the width of the adhesive layer is less than 3 mm, the strength of the adhesive layer is insufficient when the roll shrink label is heated with steam or the like, and the label may be peeled off or displaced.
Here, the “width of the adhesive layer” is the length of the adhesive layer in the label winding direction, that is, in the circumferential direction.

  In the present invention, the pressure-sensitive adhesive layer is preferably formed by being transferred onto a base film after the pressure-sensitive adhesive is coated on a roll. The purpose is to prevent the temperature for applying the hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. from being directly transmitted to the base film of the roll shrink label. Moreover, the roll shrink label can be labeled without contraction by setting the application temperature of the hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. to 100 ° C. or less. If a hot melt adhesive with a softening point higher than 95 ° C is applied directly on a substrate film at a temperature higher than 100 ° C, the roll shrink label may shrink before being attached to the container, which may prevent labeling. There is.

  Also, in the curtain spray, spiral spray, dot or bead method, there is a distance from the nozzle to the base film, so the hot melt adhesive with a softening point higher than 95 ° C cools before reaching the base film. The roll shrink label can be prevented from shrinking before being mounted.

Hereinafter, examples of the present invention will be described in more detail. However, the present invention is not limited to the following examples.
In the examples, “parts” simply means “parts by weight” and “%” means “% by weight”. “WT%” means “% by weight”.

  In the following examples, the following were used as a roll shrink label, a hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C., a container, a substrate film, and a transfer method.

Thermoplastic elastomer (A)
Clayton D1107 (manufactured by Kraton Polymer Co., Ltd.) (hereinafter abbreviated as “D1107”)
Styrene-isoprene-styrene block polymer (SIS)
Diblock amount: 17%, styrene ratio 15% by weight
Melt viscosity ^{* 1} : 1,500 mPa · s
Clayton D1112 (manufactured by Clayton Polymer) (hereinafter abbreviated as “D1112”)
Styrene-isoprene-styrene block polymer (SIS)
Diblock amount: 40%, styrene ratio 15% by weight
Melt viscosity ^{* 1} : 900 mPa · s
Clayton D1117 (manufactured by Clayton Polymer) (hereinafter abbreviated as “D1117”)
Styrene-isoprene-styrene block polymer (SIS)
Diblock amount: 35%, styrene ratio 17% by weight
Melt viscosity ^{* 1} : 470 mPa · s
Clayton D1161 (manufactured by Clayton Polymer) (hereinafter abbreviated as “D1161”)
Styrene-isoprene-styrene block polymer (SIS)
Diblock amount: 19%, styrene ratio 15% by weight
Melt viscosity ^{* 1} : 1,200 mPa · s
Clayton D1193 (manufactured by Clayton Polymer) (hereinafter abbreviated as “D1193”)
Styrene-isoprene-styrene block polymer (SIS)
Diblock amount: 20%, Styrene ratio 24% by weight
Melt viscosity ^{* 1} : 1,200 mPa · s
Clayton D1652 (manufactured by Clayton Polymer) (hereinafter abbreviated as “D1652”)
Styrene-ethylene-butylene-styrene block polymer (SEBS)
Diblock amount: 0%, styrene ratio 30% by weight
Melt viscosity ^{* 1} : 1,350 mPa · s
Kraton G1726 (manufactured by Kraton Polymer Co., Ltd.) (hereinafter abbreviated as “G1726”)
Styrene-ethylene-butylene-styrene block polymer (SEBS)
Diblock amount: 70%, styrene ratio 30% by weight
Melt viscosity ^{* 1} : 200 mPa · s
The melt viscosity ^{* 1} is a melt viscosity at 25 ° C. of a toluene solution having a thermoplastic elastomer concentration of 25% by weight. The melt viscosity was measured using a B-type viscometer RB80L (manufactured by Toki Sangyo Co., Ltd.). 3 was carried out at a suitable rotational speed.
Tackifier (B)
・ Clearon P-115 (Yasuhara Chemical Co., Ltd.)
Hydrogenated terpene tackifier softening point: 115 ° C
・ Clearon P-125 (Yasuhara Chemical Co., Ltd.)
Hydrogenated terpene tackifier softening point: 125 ° C
・ Clearon P-135 (Yasuhara Chemical Co., Ltd.)
Hydrogenated terpene tackifier softening point: 135 ° C
・ Arcon P-100 (Arakawa Chemical Co., Ltd.)
Hydrogenated petroleum tackifier softening point: 100 ° C
・ Arcon P-115 (Arakawa Chemical Co., Ltd.)
Hydrogenated petroleum tackifier softening point: 115 ° C
・ Arcon P-140 (Arakawa Chemical Co., Ltd.)
Hydrogenated petroleum tackifier softening point: 140 ° C

Synthetic oil (C)
Diana Fresia N-90 (made by Idemitsu Kosan Co., Ltd.) (hereinafter abbreviated as “N90”)
Paraffin-based process oil / Diana process PW-90 (manufactured by Idemitsu Kosan Co., Ltd.) (hereinafter abbreviated as “PW90”)
Paraffin-based process oil / Diana process PW-380 (manufactured by Idemitsu Kosan Co., Ltd.) (hereinafter abbreviated as “PW380”)
Paraffin process oil

<Method for producing hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C.>
Prototype example 1
A kneader equipped with a stirrer is charged with 25.5 parts by weight of a tackifier (B): Clearon P-115 to be added and 9 parts by weight of synthetic oil (C): N90, and is heated to a molten state. At that stage, 40 parts by weight of thermoplastic elastomer (A): D1107 was added and stirred at 150 ° C. for 1 hour, and the remaining tackifier (B): 25.5 parts by weight of Clearon P-115 was added in an amount of 3 at 150 ° C. The mixture was stirred for a time to obtain a hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C.

Prototype examples 2-8
As a thermoplastic elastomer (A), a tackifier (B), and a synthetic oil (C), the components listed in Table 1 below are used, and the hot point having a softening point higher than 95 ° C. is the same as in Prototype Example 1. A melt adhesive was prepared.

<Production method of roll shrink label>
The hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. was coated on the release paper using a hand applicator heated to 150 ° C. so that the coating amount was 20 to 30 μm. The coated product is cut to the required size, and the hot melt pressure-sensitive adhesive coated product having a softening point higher than 95 ° C. is prepared on the end (I) of the base film having a width of 60 mm and a length of 250 mm by the above method. Transfer and the adhesive layer were provided, and the roll shrink label was produced.
Table 1 shows the width of the adhesive layer at the end (I).

<Base film>
The base film used was a surface of a uniaxially stretched polyethylene terephthalate having a thickness of 10, 20, and 30 μm and provided with a design printing layer.

<Method for producing labeled container>
The roll shrink label produced above was adhered by the adhesive layer at the end (I), processed into a circumferential shape, covered on the body of a cylindrical PET bottle having a circumference of 200 mm, and temporarily fixed with cellophane tape. .

<Shrink aptitude test>
The container produced by the above method and temporarily attached with the label was placed in a hot water bath heated to 90 ° C. for about 2 seconds, and the roll shrink label was shrunk and evaluated. The evaluation when the roll shrink label shrunk and the adhesive layer peeled or shifted was evaluated as x. The evaluation when there was no displacement and no peeling was rated as “Good”.

<Physical peelability>
When the label was manually peeled from the PET bottle, the hot melt adhesive did not remain in the PET bottle: ◯, and the hot melt adhesive remained in the PET bottle: x.

<Hot water peeling test>
The labeled bottle was crushed into 8 mm square and pelletized. In a 1,000 ml round bottom flask, 360 g of 85 ° C. hot water and 40 g of the above pellets were placed, and stirred at 250 rpm for 15 minutes (stirring blade: propeller). Filtration through a filter, visual observation of the pellet was performed, the label was peeled off, and the hot melt adhesive did not remain in the pellet: ○, and the hot melt adhesive adhered to the pellet: x.

<Thermal alkali peel test>
The labeled bottle was crushed into 8 mm square and pelletized. In a 1,000 ml round bottom flask, 360 g of a 1.5% aqueous sodium hydroxide solution at 90 ° C. and 40 g of the above pellets were placed, and stirred at 250 rpm for 15 minutes (stirring blade: propeller). Filtration through a filter, visual observation of the pellet was performed, the label was peeled off, and the hot melt adhesive did not remain in the pellet: ○, and the hot melt adhesive adhered to the pellet: x.

Claims (9)

A roll shrink label that is wound around the outer periphery of a container and attached.
A roll shrink label comprising: a base film having a thickness of 5 to 40 μm; and an adhesive layer formed on the surface and formed from a hot melt adhesive having a softening point higher than 95 ° C.   The roll shrink label according to claim 1, wherein an adhesive layer is provided at one end (I) of the base film, and no adhesive layer is provided at the other opposite end (II).   The roll shrink label according to claim 2, wherein the end (I) is a fixed part with the other part of the base film itself after being wound.   A hot melt pressure-sensitive adhesive having a softening point higher than 95 ° C. comprises a thermoplastic elastomer (A), a tackifier (B), and a synthetic oil (C), and the thermoplastic elastomer (A) is a diblock The roll shrink label according to any one of claims 1 to 3, wherein the roll shrink label is a styrene elastomer having a content of 70% by weight or less and a styrene ratio of 10 to 40% by weight.   The roll shrink label according to any one of claims 1 to 4, wherein the adhesive layer has a width of 3 mm or more.   The roll shrink label according to any one of claims 1 to 5, wherein the adhesive layer is formed by transferring an adhesive onto a roll and then transferring it onto a base film.   The pressure-sensitive adhesive layer is formed by applying a pressure-sensitive adhesive on a substrate film by any one of curtain spray, spiral spray, dot or bead coating methods. 5. A roll shrink label according to any one of the above.   A container with a label, wherein the roll shrink label according to claim 1 is attached to the container. A roll shrink label comprising a base film having a thickness of 5 to 40 μm and an adhesive layer provided on the surface and formed from a hot melt adhesive having a softening point higher than 95 ° C., A first step of producing a circumferential label by winding around a vertically arranged cylinder and attaching the adhesive layer to another part of the base film itself:
A second step of extracting the cylinder and inserting a cylindrical container into the circumferential label:
Next, a method for producing a labeled container, comprising: a third step of performing heat shrinkage treatment and mounting the circumferential label around the container.