JP2003288017A - Stretch label - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stretch label which is cylindrical and to be applied on the peripheral surface of a resin bottle body made of polyethylene terephthalate resin or the like and to provide an extremely beautiful stretch label which is not influenced by heat treatment conditions for the bottle when the bottle is filled with a liquid content and then subjected to low temperature sterilization treatment by heating, which is free from wrinkles (transverse wrinkles), looseness, fracture, dropping or the like, which has excellent stretching properties, toughness, decoration properties or the like, and which can be tightly and firmly adhered to the peripheral surface of the bottle. <P>SOLUTION: The cylindrical stretch label is to be applied on the peripheral surface of a resin bottle body filled with a liquid content and subjected to low temperature sterilization treatment by heating. The raw sheet film constituting the cylindrical stretch label shrinks by 1 to 12% in the longitudinal (machine) direction (MD) of the label and expands by 0.2 to 5.0% in the transverse direction (TD) of the label by the effect of hot water used for low temperature sterilization treatment by heating. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretch label, and more specifically, it is composed of a tubular stretch label attached to the outer peripheral surface of the body of a resin bottle made of polyethylene terephthalate resin or the like. Even after sterilization by low-temperature heat treatment after filling and packaging, the product is not affected by the heat treatment conditions, and does not cause wrinkles (horizontal wrinkles), sagging, tearing, falling, etc., stretchability, toughness, and beauty. The present invention relates to an extremely beautiful stretch label that is excellent in, and can firmly adhere to the outer peripheral surface of the bottle body.

[0002]

2. Description of the Related Art Conventionally, various types of labels have been developed as labels to be mounted on the outer peripheral surface of various packaging containers made of plastic, glass or metal.
Although proposed, a stretch label attached to the outer peripheral surface of a packaging container by utilizing the self-stretching property or self-healing property of a film is known as one of them. Since this one has self-stretchability or self-healing property, it is possible to follow the dimensional change of the packaging container and the like, and it is possible to maintain a close contact state on the outer peripheral surface of the packaging container. On the other hand, after use, the packaging container and the label can be easily separated, and can be separated and collected.
It has various advantages such as being suitable for the environment and being able to manufacture a label at low cost. By the way, as a packaging container, for example, when using a resin bottle made of polyethylene terephthalate resin or the like, when filling and packaging the contents containing a milk drink or fruit juice or even a small amount of those components, Stretch labels, etc. are attached to the outer peripheral surface of the body of a resin bottle made of polyethylene terephthalate resin, etc., and then the contents are filled and packaged and sealed, and then the resin bottle is sterilized by heat. Manufactures packaging products. Thus, in the above, as the sterilization method, generally, a sterilization method by heat is adopted, and it is roughly classified into two methods, a method for sterilization at high temperature for a short time and a method for sterilization at low temperature for a long time. However, when using a resin bottle made of polyethylene terephthalate resin or the like as a packaging container,
The latter method of sterilizing at low temperature for a long time is mainly adopted,
Currently, hot water of about 65 ° C to 70 ° C is used, and this is diffused in a resin bottle for about 10 to 30 minutes, especially when a resin bottle made of polyethylene terephthalate resin or the like is used. Is heat-sterilized by using hot water of about 67 to 68 ° C. and dissipating it in the resin bottle for about 15 to 20 minutes, because the resin bottle causes thermal deformation in the vicinity of 80 ° C. Treatment is performed, and this sterilization method is usually called low temperature heat sterilization.

[0003]

However, in the low temperature heat sterilization treatment method as described above, a resin bottle filled with the contents and having a stretch label or the like attached to the outer peripheral surface of the body has a temperature of 67 ° C. Since the hot water at about 68 ° C. is diffused for about 10 to 30 minutes, the stretch label attached to the outer peripheral surface of the body of the resin bottle is also affected by the heat due to the heat sterilization treatment. For example, the action of heat by such a heating process is a very severe condition. For example, in a stretch label that is attached by utilizing the characteristics such as self-stretchability or self-healing property of the original film, the characteristics are lost due to the influence of the heat treatment conditions by the heat sterilization treatment, and for example, wrinkles ( Wrinkles), sagging, tearing, falling off, etc., and its stretchability, toughness, beauty, etc. are lost, the adhesion to the outer peripheral surface of the body of the bottle is reduced, and the appearance designability, etc. Inferior to
It is extremely difficult to reveal a beautiful stretch label. That is, in the stretch label used by the low-temperature heat sterilization treatment method as described above, for example, after the content is attached to the outer peripheral surface of the body of the polyethylene terephthalate resin bottle before the filling and packaging of the content, Since the product is filled and packaged and then subjected to heat sterilization to be commercialized, the stretch label is attached to the outer peripheral surface of the body of the bottle, for example, water pressure by bottle washing treatment before filling the contents. Etc., or the load of heat, etc. due to heat sterilization treatment after filling the contents, etc., and various other loads, and these loads greatly affect the physical properties etc. of the raw film that constitutes the stretch label However, for example, due to loosening of the label, falling off, whitening of the raw film constituting the stretch label, occurrence of surface wrinkles, etc., poor appearance, Reduction of 粧性, and generates various problems other like. Therefore, the present invention comprises a tubular stretch label to be attached to the outer peripheral surface of the body of a resin bottle made of polyethylene terephthalate resin or the like, which is filled with liquid contents and subjected to low-temperature heat sterilization treatment. Not affected by the heat treatment conditions, wrinkles, slackness, tears, and dropouts do not occur, and it has excellent stretchability, toughness, beauty, etc. and is strong on the outer surface of the body of the bottle. It is to provide an extremely beautiful stretch label that can be adhered to.

[0004]

DISCLOSURE OF THE INVENTION The inventor of the present invention intends to solve the above problems relating to a tubular stretch label to be attached to the outer peripheral surface of the body of a resin bottle made of polyethylene terephthalate resin or the like. As a result of various studies, it is composed of a tubular stretch label that is filled and packaged with a liquid content and that is attached to the outer peripheral surface of the body of a resin bottle that is subjected to low-temperature heat sterilization, and further that the tubular stretch label is configured. As a raw film to be used, a single-layer or multi-layer coextrusion laminated resin film made of a polyolefin-based resin is used, and stretched in the longitudinal direction by about 2 to 15%, and further, by the action of hot water for low-temperature heat sterilization treatment, A raw fabric film prepared so as to shrink in the range of 1 to 12% in the longitudinal direction of the label (MD) and expand in the range of 0.2 to 5.0% in the transverse direction of the label (TD). And a tubular stretch label is manufactured from the tubular stretch label, and the tubular stretch label is used, for example, the outer circumference of the body of a resin bottle made of polyethylene terephthalate resin or the like. After mounting on the surface and then filling and packaging the contents and sealing the contents, a resin bottle made of the polyethylene terephthalate resin or the like is placed in a resin bottle and heated at 70 ° C. or lower, usually 67 ° C. to 68 ° C. When water was diffused for about 10 to 30 minutes and low-temperature heat sterilization treatment was performed to manufacture a packaged product, a tubular stretch label attached to the outer peripheral surface of the body of the resin bottle was It adheres firmly and no dropout is observed.In particular, it is applied to the above-mentioned tubular stretch label, for example, the load such as water pressure due to the bottle washing process before filling the contents, or the heating after filling the contents. Killing Heat load due process, etc., to various loads other such, and none of the effects on the physical properties of the raw film constituting them by stretch label, for example, falling due to loosening of a label,
It prevents the occurrence of various problems such as whitening of the raw film constituting the stretch label, occurrence of surface wrinkles, breakage, etc., further appearance failure, deterioration of cosmetics, etc., and self-stretchability of the film. The present invention has been completed by finding that it is possible to manufacture an extremely beautiful stretch label excellent in appearance design that can be tightly adhered tightly to the outer peripheral surface of the bottle body by using self-healing property.

That is, the present invention comprises a tubular stretch label which is filled and packaged with a liquid content and which is attached to the outer peripheral surface of the body of a resin bottle to be sterilized by low-temperature heat treatment. The raw film constituting the stretch label shrinks in the range of 1 to 12% in the longitudinal direction (MD) of the label and 0 in the transverse direction (TD) of the label due to the action of the hot water subjected to the low temperature heat sterilization treatment. .2-
The present invention relates to a stretch label characterized by expanding in a range of 5.0%.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A stretch label according to the present invention will be described in more detail with reference to the drawings and the like with reference to an example of the stretch label according to the present invention. FIG. 3 is a schematic configuration diagram showing an outline of a configuration of a specific example regarding.

First, in the present invention, as the original fabric film 1 constituting the stretch label according to the present invention, a laminate (1a) of one or two or more plastic films made of polyolefin resin is used. A desired print pattern portion 2 that can be seen through from the outer surface side Q on the inner surface P surface of the anti-film 1 (1a) by a printing method such as a gravure printing method, an offset printing method, a letterpress printing method, or the like. And then the inner surface side P of one end portion having the printed pattern portion 2 of the above-mentioned original film 1
An adhesive layer is applied to the surface of the above to form an adhesive layer 3, and on the other hand, the surface of the outer surface side Q of the other end of the above-mentioned original film 1 is subjected to, for example, corona discharge treatment or plasma treatment. Then, the easy adhesion treatment layer 4 is formed.

Next, in the present invention, as shown in FIG. 2, the original film 1 (1a) is formed by making the surface of the adhesive layer 3 and the surface of the easy-adhesion treatment layer 4 formed above face each other. Both ends are overlapped, and then the polymerized portion is joined via the adhesive layer 3, the easy-adhesion treatment layer 4 and the like to form the joint portion 5 to manufacture the tubular stretch label A according to the present invention. . In the present invention, although not shown, when manufacturing the tubular stretch label according to the present invention, as described above, the joining portion is formed by joining via the adhesive layer, the easy-adhesion treated layer and the like. Instead of forming, for example, a raw film, one lower surface of both end portions of the film is opposed to the other upper surface thereof, and the both end portions thereof are overlapped, and then the polymerized portion is subjected to heat treatment such as heating and pressing. It is also possible to manufacture a tubular stretch label according to the present invention by applying and bonding to form a joint. Alternatively, although not shown in the present invention, when manufacturing the above-mentioned tubular stretch label according to the present invention, for example, the original film is made to face the lower surfaces of both end portions thereof in a manner such that the lower surfaces of the original film face each other. It is also possible to produce a tubular stretch label according to the present invention by stacking both ends thereof and then superposing the polymerized portion on each other by heat treatment such as heating and pressurization to form a joint portion. it can. In addition, in the present invention, when manufacturing the tubular stretch label according to the present invention, the raw film may be adhered at both ends thereof by any of the welding cutting adhesion method, the solvent adhesion method and the like. There is no such thing.

Next, in the present invention, as shown in FIG. 3, the tubular stretch label A manufactured as described above is used, and the stretch label A is used for 10 to 10 times.
In a state of being stretched to about 25%, for example, it is attached to the outer peripheral surface of the body of a resin bottle 6 made of polyethylene terephthalate resin or the like, and tightly tightly adhered to the outer peripheral surface of the body. The resin bottle B with the tubular stretch label A is manufactured.

Next, in the present invention, as shown in FIG. 4, in the bottle B with the cylindrical stretch label A produced above, for example, from the mouth or the like, for example, milk drink or fruit juice or components thereof. Contents containing even a small amount of 7
Etc., and thereafter, the cap 8 and the like are screwed into the mouth via a screw part and the like to be sealed, then the contents 7 and the like are filled and packaged, and further, the outer peripheral surface of the body is tubular. For example, hot water of 70 ° C. or lower, specifically, hot water of 65 ° C. to 70 ° C. is used in a resin bottle 6 made of, for example, polyethylene terephthalate resin, which is equipped with the stretch label A. ,
Disperse this in a resin bottle 6 for about 10 to 30 minutes,
In particular, for example, when the resin bottle 6 made of the above-mentioned polyethylene terephthalate resin or the like is used, the resin bottle 6 undergoes thermal deformation in the vicinity of 80 ° C. A low-temperature heat sterilization treatment is performed by using hot water and dispersing this in the resin bottle 6 for about 15 to 20 minutes. The raw film constituting the tubular stretch label A mounted on the outer peripheral surface of the body portion of the resin bottle 6 is heated in the longitudinal direction (MD) by the action of heat by the hot water for low temperature heat sterilization treatment. Shrink in the range of 1 to 12%, and in the lateral direction of the label (T
D) expands in the range of 0.2 to 5.0%, the tubular stretch label A is firmly and closely attached to the outer peripheral surface of the body portion of the resin bottle 6, and the appearance design It is possible to manufacture the final packaged product C having an extremely beautiful stretch label having excellent properties.

In the present invention, in the packaged product produced as described above, the tubular stretch label attached to the outer peripheral surface of the body of the resin bottle firmly adheres to the outer peripheral surface of the body of the bottle, and its dropout is recognized. Not, in particular, the above-mentioned tubular stretch label, for example, the load such as water pressure by bottle washing treatment before filling the contents, or the load such as heat by low temperature heat sterilization treatment after filling the contents, With respect to various loads such as others, there is no effect on the physical properties of the raw film that constitutes the stretch label, and for example, the looseness of the label causes the film to fall off, whitening of the raw film that constitutes the stretch label, and surface wrinkles. To prevent the occurrence of various problems such as appearance, tearing, etc., poor appearance, poor cosmetic appearance, etc., and utilizing the self-stretching property or self-healing property of the film. It is possible to manufacture a packaged product made of a resin bottle that is tightly adhered tightly to the outer peripheral surface of the torso body and is attached with an extremely beautiful stretch label that is excellent in appearance design. . It is needless to say that the above exemplification is an example showing the outline of the configuration of the specific example of the stretch label according to the present invention, and the present invention is not limited to this.

Next, in the present invention, the label material constituting the stretch label according to the present invention, the manufacturing method and the like will be described. First, as the raw film constituting the stretch label according to the present invention, for example, It is possible to use a raw film composed of one layer of a plastic film made of a polyolefin resin or a laminate of two or more layers. Thus, in the present invention, examples of the resin that constitutes the above-mentioned raw film include low-density polyethylene (LDPE), linear (linear) low-density polyethylene (polymer polymerized using a multi-site catalyst). -,
LLDPE), metallocene catalyst (single site catalyst)
Ethylene-α-olefin copolymer, medium density polyethylene (MDPE), high density polyethylene (HDPE), polypropylene resin, ethylene-polypropylene copolymer, ethylene-vinyl acetate copolymer, ethylene- Unsaturated carboxylic acid copolymers such as acrylic acid or methacrylic acid, and one or more polyolefin resins such as others can be used. In the present invention, one or more of the above-mentioned polyolefin resins are used, and for example, a T-die extruder, a T-die co-extruder, an inflation extruder, an inflation co-extruder is used. , Etc. to produce a single-layer resin film or a multilayer laminated resin film, and further, if necessary, the single-layer resin film or the multilayer laminated resin film in a uniaxial or biaxial direction. By stretching, a single-layer or multi-layer resin film having self-elasticity stretchability or self-healing property can be produced and used as a raw film. The film thickness of the resin film is about 20 μm to 200 μm, preferably about 30 μm to 100 μm.

By the way, in the present invention, as the original film constituting the stretch label according to the present invention,
Among the resin films produced as described above, in particular, a single-layer resin film or a multi-layer laminated resin film made of polyolefin resin is used and
It is desirable to use a resin film having a self-elastic stretchability or self-healing property, which has a constitution in which it is stretched by about 15%. Thus, by using the resin film as described above, 1 to 1 in the label longitudinal direction (MD) due to the action of the hot water for the low temperature heat sterilization treatment described above.
It can be easily prepared so as to shrink in the range of 12% and expand in the range of 0.2 to 5.0% in the label transverse direction (TD).

In the present invention, as the resin forming the raw film constituting the stretch label according to the present invention, in addition to the above-mentioned polyolefin resin,
For example, polystyrene resin, polyvinyl chloride resin,
Poly (meth) acrylic resin, polyester resin, polyamide resin, polyacrylonitrile resin, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyvinyl alcohol resin, ethylene-vinyl alcohol copolymer Polymer, poly
Use one or more of a bone-based resin and other resins, and use a T-die extruder, a T-die co-extruder, an inflation extruder, an inflation co-extruder, etc. A single-layer or multi-layer resin film having self-elasticity stretchability or self-healing property, which is obtained by uniaxially or biaxially stretching and uniaxially or biaxially stretching it. Is.

Next, in the present invention, among the above polyolefin resins, ethylene-α polymerized using a metallocene catalyst (single site catalyst) is particularly preferable.
-It is preferable to use an olefin copolymer. The above metallocene catalyst (single-site catalyst)
As the ethylene-α-olefin copolymer polymerized by using, for example, a catalyst prepared by combining a metallocene complex with an alumoxane, such as a catalyst prepared by combining zirconocene dichloride and methylalumoxane, that is, a metallocene catalyst is used. An ethylene-α-olefin copolymer obtained by polymerization can be used. The above-mentioned metallocene catalyst is called a single-site catalyst because the active site is non-uniform and is called a multi-site catalyst, whereas the current catalyst is called a single-site catalyst. (Hereinafter, the metallocene catalyst and the single-site catalyst have the same meaning.).

The ethylene-α-olefin copolymer polymerized using the above metallocene catalyst (single-site catalyst) will be described in more detail. Specifically, for example, a metallocene-based transition metal compound and an organoaluminum compound can be used. It is possible to use an ethylene-α-olefin copolymer obtained by polymerization using a catalyst in combination, that is, a metallocene catalyst (including a so-called Kaminski catalyst). The metallocene catalyst may be used by being supported on an inorganic substance. In the above, as the metallocene-based transition metal compound, for example,
A transition metal selected from Group IVB, specifically titanium (Ti), zirconium (Zr), hafnium (H
1) or 2) bonded to f) with a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a tetrahydroindenyl group, a substituted tetrahydroindenyl group, a fluorenyl group, and a substituted fluorenyl group. Or two of these groups are linked by a covalent bond to form a bond, and also a hydrogen atom, an oxygen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, acetylacetona- It is possible to use those having a ligand such as an alkyl group, a carbonyl group, a nitrogen molecule, an oxygen molecule, a Lewis base, a substituent containing a silicon atom, and an unsaturated hydrocarbon.

In the above, as the organoaluminum compound, alkylaluminum, chain-like or cyclic aluminoxane, etc. can be used. Here, examples of the alkyl aluminum include triethyl aluminum, triisobutyl aluminum, dimethyl aluminum chloride, diethyl aluminum chloride, methyl aluminum dichloride, ethyl aluminum dichloride, dimethyl aluminum fluoride, diisobutyl aluminum hydride, diethyl aluminum sesquichloride. Etc. can be used. The chain or cyclic aluminoxane can be produced, for example, by bringing alkylaluminum into contact with water. For example, it can be produced by adding alkylaluminum at the time of polymerization and then adding water, or by reacting crystallization water of a complex salt or adsorbed water of an organic / inorganic compound with alkylaluminum. Next, in the above, as the inorganic substance supporting the metallocene catalyst, for example, silica gel, zeolite, silicon earth or the like can be used.

Next, in the above, as the polymerization method,
For example, it can be carried out by various polymerization methods such as bulk polymerization, solution polymerization, suspension polymerization and gas phase polymerization. Further, the above-mentioned polymerization may be carried out by any method such as a batch system or a continuous system. In the above, the polymerization conditions include a polymerization temperature and -1.
The temperature is from 00 to 250 ° C., the polymerization time is from 5 minutes to 10 hours, the reaction pressure is from atmospheric pressure to 300 Kg / cm ² . Further, in the present invention, α which is a comonomer copolymerized with ethylene
As the olefin, for example, propylene, 1-butene, 3-methyl-1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene, decene and the like can be used. The above α-olefins may be used alone or in combination of two or more. Further, the mixing ratio of the above α-olefin is, for example, 1 to 50% by weight, preferably 10 to 30%.
It is preferably set to wt%. Thus, in the present invention, ethylene-polymerized using the above metallocene catalyst
The physical properties of the α-olefin copolymer have, for example, a molecular weight of 5
× 10 ^{3 to} 5 × 10 ⁶ , density, 0.905 to 0.940
g / cm ³ , melt flow rate [MFR], 0.1,
It is preferably 1.0 to 6.0 g / 10 min. In the present invention, the ethylene-α-olefin copolymer polymerized using the above metallocene catalyst includes, for example, antioxidants, ultraviolet absorbers, antistatic agents, antiblocking agents, lubricants (fatty acid amides, etc.). ), Flame retardants, inorganic or organic fillers, dyes, pigments, etc. can be optionally added and used.

In the present invention, the ethylene-α-olefin copolymer polymerized by using the above metallocene catalyst is, specifically, a product name "Car-
"Nell", product name "Evolu" manufactured by Mitsui Petrochemical Industry Co., Ltd., USA, EXXON CH
Product name "EXACACT" (EXAC) manufactured by EMICAL
T) ", Dow Chemical, USA
AL) product name "Affinity- (AFFINIT
Y), an ethylene-α-olefin copolymer such as a trade name “ENGAGE” can be used.

In the present invention, among the above-mentioned polyolefin resins, it is also preferable to use, for example, linear (linear) low density polyethylene synthesized from a transition metal catalyst and having no long chain branch. is there. In addition, in this invention, as said linear (linear) polyethylene, as ethylene, for example, propylene, 1-butene, 3-methyl-1-butene, 4-methyl-1-pentene, 1- A copolymer with an α-olefin such as hexene, 1-octene or decene can be used. In the present invention, the physical properties of the above linear (linear) polyethylene include, for example, density, 0.905 to 0.9
40 g / cm ³ , melt flow rate [MFR], 0.
It is preferable to use one having a characteristic of 5 to 6.0 g / 10 quantile.

Furthermore, in the present invention, as the original film constituting the stretch label according to the present invention,
For example, a first layer comprising an ethylene-α-olefin copolymer polymerized from a surface layer using a single site catalyst (metallocene catalyst), a high pressure low density polyethylene 30 to 100 wt% and a single site catalyst. A second layer composed of 0 to 70% by weight of an ethylene-α-olefin copolymer polymerized by using (metallocene catalyst), and
Third layer or single-site catalyst comprising 30 to 100 wt% of high-pressure low-density polyethylene and 0 to 70 wt% of ethylene-α-olefin copolymer polymerized using a single-site catalyst (metallocene catalyst) It is preferable to use a multilayer coextrusion laminated resin film of a third layer composed of an ethylene-α-olefin copolymer polymerized by using (metallocene catalyst).

In the present invention, a method of molding the above-mentioned multi-layer coextrusion laminated resin film will be described. Examples of such a method include, for example, the single-site catalyst (metallocene catalyst which constitutes the first layer). 2) ethylene-α-olefin copolymer, second
Ethylene-α-olefin copolymers 0 to 30 polymerized by using a high-pressure low-density polyethylene 30 to 100% by weight and a single-site catalyst (metallocene catalyst) constituting a layer
70% by weight of a mixture, and an ethylene-α-olefin copolymer polymerized by using 30-100% by weight of high-pressure low-density polyethylene constituting the third layer and a single-site catalyst (metallocene catalyst) 0-70% by weight
And an ethylene-α-olefin copolymer polymerized using a mixture of and a single-site catalyst (metallocene catalyst), which are used in a T-die coextrusion machine, an inflation coextrusion machine, etc. Is coextruded and then uniaxially or biaxially stretched,
A multi-layer coextrusion laminated resin film having self-elastic stretchability or self-healing property can be produced.

Next, in the present invention, the thickness of the above-mentioned multilayer coextrusion laminated resin film is 20 μm to 200 μm.
The m-position is preferably about 30 μm to 100 μm. Thus, in the above-mentioned multilayer co-extruded laminated resin film, the film thicknesses of the first layer, the second layer and the third layer constituting the multilayer co-extruded laminated resin film are as follows: first layer: second layer: The third layer preferably has a ratio within the range of 2: 5: 2. Further, regarding the film thickness of the above-mentioned multilayer coextrusion laminated resin film, the first layer has a film thickness of 4 μm to
40 μm, the second layer has a film thickness of 10 μm to 100 μm, the third layer
It is preferable that the layer has a film thickness in the range of about 4 μm to 40 μm. In the present invention, the reason why the above materials are used and the film thickness is as described above is that the first layer is a surface layer, and it is necessary to have excellent scratch resistance and slipperiness. And the second layer has a large influence on the physical properties of the label itself. Therefore, the single-site system is strong against elongation and is not suitable for cutting. The amount of ethylene-α / olefin copolymer polymerized by using a catalyst (metallocene catalyst) is reduced, and the melt rate (MF) is low.
R, high molecular weight) high-pressure low-density polyethylene is used to achieve both cut property and stretch label suitability. Furthermore, the third layer further improves label suitability and cut property in the second layer. This is because the compensation is important and printability is important.

Next, in the present invention, the high-pressure low-density polyethylene in the second layer or the third layer forming the above-mentioned multilayer coextrusion laminated resin film is, for example,
Using a continuous reactor, pressure, 1200-3000a
At high pressure and high temperature such as tm, temperature, 130 to 350 ° C., oxygen or organic peroxide is used as an initiator. First, stepwise compression, introduction of radical initiator, partial polymerization of ethylene, polyethylene A high-pressure low-density polyethylene produced by shortening the polymerization time through the steps of separating ethylene, extruding molten polyethylene, extruding molten polyethylene, and finally cooling ethylene can be used. In the present invention, as the high pressure method low density polyethylene as described above,
Ethylene homopolymer, or ethylene and, for example, α-olefins such as propylene, 1-butene, 3-methyl-1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene and decene. And the like can be used. In the present invention, the physical properties of the high-pressure low-density polyethylene include, for example, density, 0.90 to 0.935 g / cm ³ , melt flow rate [MFR], 0.1 to 3. It is preferable to use one having a characteristic of 0 g / 10 quantile.

In the present invention, in order to form the above-mentioned multi-layer coextrusion laminated resin film, if necessary, for example, direct resin may be added to the resin constituting the first layer, the second layer or the third layer. Chain (linear) low density polyethylene, medium density polyethylene, high density polyethylene, ethylene and vinyl acetate,
Acrylic acid, methacrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, copolymers with methyl methacrylate, etc., ionomer resins, polypropylene, propylene with ethylene, butene, hexene, etc. It is possible to add a blended or other polyolefin resin and blend it for use. The amount of the above-mentioned addition and blending is preferably a small amount of about 0.1 to 10% by weight.

Further, in the present invention, since the first layer constituting the above-mentioned multi-layer coextrusion laminated resin film is the outermost surface of the label, it has strength, surface hardness, etc., and toughness,
Excellent heat resistance, kill resistance, etc., and its glossiness,
Moreover, it has excellent stretchability. Next, the second layer constituting the multilayer coextrusion laminated resin film uses a slitter or the like and has a cutting property of cutting in the lateral direction or the longitudinal direction. It is excellent and has excellent stretchability. Furthermore, the third layer constituting the multi-layer coextrusion laminated resin film has excellent close adhesion to the outer peripheral surface of the bottle body, and the outer periphery of the bottle body of the label. It is excellent in printability and the like for preventing falling off from the surface, forming a desired printed pattern portion and the like, and excellent in stretchability.

Further, in the present invention, in the raw film constituting the stretch label according to the present invention, for example, when the film is formed by single or co-extrusion, the processability and heat resistance of the film, Weather resistance, mechanical properties, dimensional stability, antioxidant, slipperiness, releasability, flame retardant, antifungal,
For the purpose of improving and modifying electrical characteristics, strength, etc.,
Various plastic compounding agents and additives can be added arbitrarily, and the addition amount is from a very small amount to several tens%.
Up to the above, it can be optionally added depending on its purpose. In the above, as the compounding agent or additive, for example, a lubricant, a cross-linking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a filler, a reinforcing agent, an antistatic agent, a flame retardant, a flameproofing agent, a foaming agent, a protective agent. Molds, pigments, dispersants, surfactants, antiblocking agents, etc. can be used, and further,
A modifying resin or the like can also be used. Further, in the present invention, as the single or multi-layer coextrusion laminated resin film constituting the above-mentioned label, a film which is uniaxially or biaxially stretched after film formation and then heat-fixed is used. And preferably 2 in one direction
It is preferable to use a single or multi-layer coextrusion laminated resin film that has been stretched by about 15% and then heat set.

In the above, as the compounding agent, the additive, etc., specifically, a lubricant which itself has lubricity and which hardly migrates in the resin can be used. For example, liquid paraffin, White petrolatum, petroleum wax,
Waxes such as microcrystalline wax, montan wax, polyethylene wax, etc., having 8 to 22 carbon atoms
Higher fatty acids, or higher fatty acids such as higher fatty acid aluminum, higher fatty acid calcium, higher fatty acid magnesium, higher fatty acid zinc, and higher fatty acid lithium, or metal salts thereof, straight-chain aliphatic monovalent alcohols having 8 to 18 carbon atoms,
Aliphatic alcohols such as glycerin, sorbitol, propylene glycol, pentaerythritol, and triethylene glycol, higher fatty acids having 4 to 22 carbon atoms and straight chains having 8 to 18 carbon atoms Esters with aliphatic monovalent alcohol, acetylbutyl citrate, di-2-ethyl-hexyl adipate, azelaic acid-n-hexyl, ethanediolemontanic acid ester, poly (1.3-butanediol-adipic acid) Esters, methyl acetylricinoleate, poly (1.3-butylene glycol, 1.4-butylene glycol, octyl alcohol adipate) ester, esters of sugar-sugar sugar alcohol and fatty acid , Hydrogenated edible oils, castor oil, sperm acetyl wax, glycerides of acetylated monoglyceride sugar,
An ethylene bis fatty acid amide represented by, for example, ethylene bis oleyl amide having 16 to 18 carbon atoms, and 8 carbon atoms
~ 22 higher fatty acid amides, stearyl erucamide,
Higher fatty acid amides such as erucic acid amide and oleyl palmitamide, and other silicone oils such as methylhydrodiene polysiloxane, dimethyl polysiloxane, methylphenyl polysiloxane, polyoxyalkylene / dimethyl polysiloxane, and maleic acid modification One or more of glycerin esters of rosin and the like can be used. In the present invention, among the above-mentioned lubricants, in particular, erucic acid amide, ethylenebisoleylamide, stearic acid amide, oleic acid amide, methylenebisstearic acid amide, etc., have lubricity themselves, It is an extremely effective material. The amount of the above lubricant added is 0.08% by weight based on 100 parts by weight of the resin.
It is preferable to add it at a ratio of about 10.0% by weight.

Further, in the present invention, in addition, for example, oxides of aluminum oxide, magnesium oxide, silica, calcium oxide, titanium oxide, zinc oxide, etc., and hydroxides of aluminum hydroxide, magnesium hydroxide, calcium hydroxide, etc. Substances, carbonates such as magnesium carbonate and calcium carbonate, sulfates such as calcium sulfate and barium sulfate,
Silicates such as magnesium silicate, aluminum silicate, calcium silicate, and aluminosilicate, and other inorganic compound-based antiblocking agents such as kaolin, talc, and diatomaceous earth, or high-density polyethylene, molecular weight 30
One kind of organic compound type anti-blocking agent consisting of fine powder of 0000 or more ultra high molecular weight polyethylene, polypropylene, polycarbonate, polyamide, polyester, melamine resin, diallyl phthalate resin, acrylic resin, etc. Or 2 or more types can be added. The addition amount is preferably about 0.01 to 3% by weight with respect to 100 parts by weight of the resin.

Next, in the present invention, for example, a normal gravure printing ink, an offset printing ink, a letterpress printing ink, a silk screen printing may be applied to the front surface or the back surface of the raw film constituting the stretch label according to the present invention. Using ink, etc., for example, gravure printing method, offset printing method, letterpress printing method, flexo printing method, silk screen printing method, transfer printing method, etc. hand,
For example, an arbitrary printed pattern portion including characters, figures, symbols, pictures, etc. is formed. In the above,
As a general ink composition for forming a printed pattern portion, one or more kinds of resins are used, and this is used as a main component of a vehicle, and if necessary, a plasticizer, a stabilizer and an antioxidant are added. , A light stabilizer, an ultraviolet absorber, a curing agent, a cross-linking agent, a lubricant, an antistatic agent, a filler, a slip agent, and one or more kinds of additives such as others are optionally added, and a dye
An ink composition can be produced by adding a colorant such as a pigment and thoroughly kneading with a solvent, a diluent and the like to prepare.

Further, in the above, as the resin as the vehicle constituting the ink composition, for example, rosin,
Natural resins such as co-pal, dammar, shellac, hardened rosin, rosin ester, etc. or processed resins thereof, rosin-modified phenol resin, 100% phenol resin, maleic acid resin, alkyd resin, petroleum resin, poly Vinyl chloride resin, polyvinyl acetate resin, polystyrene resin, (meth) acrylic resin, polyester resin,
Polyamide resins, epoxy resins, aminoalkyd resins, polyurethane resins, other synthetic resins or processed resins thereof, nitrocellulose, ethyl cellulose
It is possible to use one or a mixture of two or more of fibrin derivatives such as rubber, chlorinated rubber, cyclized rubber, rubber derivatives such as glue, glue, casein, dextrin, zein and others.

Thus, in the present invention, with respect to the original film having the printed pattern portion formed above, the surface of the printed pattern portion of the original film is set to the inner surface side, and the inner surface side having the printed pattern portion is formed. An adhesive layer is formed on the surface of the end portion, and on the other hand, the surface of the end portion on the surface side of the raw film is subjected to corona discharge treatment or plasma treatment to form an easy-adhesion treatment layer, and then both end portions thereof are formed. The surface of the adhesive layer and the surface of the easy-adhesion treatment layer are overlapped with each other, and then both ends of the polymerized portion are bonded together via the adhesive layer, the easy-adhesion treatment layer, etc. By forming the joint part by forming the joint part, a tubular stretch label that can be tightly adhered to and mounted on the outer peripheral surface of the body part of the resin bottle is manufactured.

Further, in the present invention, the tubular stretch label produced above is used, for example, in a state where it is stretched to about 10 to 25% by using a stretcher or the like, for example, polyethylene telef Attached to the outer peripheral surface of the body of a resin bottle made of a plastic molded bottle formed by blow molding using tarret resin, etc., let alone the printed pattern part that constitutes the stretch label, the raw film raw material The ground, etc., on the outer peripheral surface of the body of the resin bottle,
It is possible to manufacture a stretch label-equipped resin bottle which is tightly tensioned and tightly adhered.

Next, in the present invention, after forming a printed pattern portion or the like on the raw film as described above, the printed pattern portion is made the inner surface side and both ends thereof are overlapped, and thereafter, the overlapped portion is overlapped. Both ends, for example, to form a joint by joining using an adhesive or the like, when forming a tubular stretch label, in order to form the easy adhesion treatment layer, for example,
Corona discharge treatment, ozone treatment, plasma treatment, frame treatment, sandblast treatment, chemical treatment, preheat treatment, ultraviolet irradiation treatment, high frequency heat treatment, electromagnetic induction heat treatment, microwave treatment, anchor coat It is possible to perform a coating agent coating treatment and other treatments.
Thus, in the present invention, among the above-mentioned treatments, it is particularly desirable to perform the surface modification treatment by corona discharge treatment, ozone treatment, plasma treatment, frame treatment or the like. Further, in the present invention, as the adhesive used when joining both ends of the original film, for example, polyurethane-based resin, polyamide-based resin,
Polyacrylic resin, polyvinyl acetate resin, cellulose
It is possible to use a resin-based adhesive containing a resin such as an epoxy resin, an epoxy resin, or the like as a main component of the vehicle. In the present invention, when manufacturing the above-mentioned tubular stretch label, as described above, for example, the raw film, one end surface of the both ends and the upper surface of the other end are opposed to each other. Parts, and then the polymerized part is subjected to heat treatment such as heating and pressurizing to join to form a joint, or, for example,
The original film is made to face each other with the lower surfaces of both ends facing each other like a palm-to-shoulder, and the both ends are overlapped, and then the polymerized part is subjected to heat treatment such as heating and pressurizing to join it. A heat seal method for forming a film, other, for example, a raw film, at both ends thereof, may be any adhesion method such as a welding cutting adhesion method, a solvent adhesion method, and the like. In addition, if necessary, the above-mentioned adhesive, or the surface treatment for forming the easy-adhesion-treated layer, the surface modification treatment, or the like can be arbitrarily performed.

In the present invention, the tubular stretch label has a tubular outer diameter that is slightly smaller than the outer diameter of the body of the resin bottle. Is preferably formed. In the present invention, when the tubular stretch label is attached to the outer peripheral surface of the bottle body, the outer diameter of the tubular stretch label is stretched using a stretcher or the like, and is stretched. It is to be installed in. Then, when the stretch label is attached to the outer peripheral surface of the body of the resin bottle, the stretch label is formed by the self-elastic stretching force or heat shrinking force of the raw film constituting the stretch label. It is mounted in a state of being closely and closely adhered to the outer peripheral surface of the.

In the present invention, after the stretch label is attached to the outer peripheral surface of the body of the resin bottle as described above, water, carbonated drink, fruit juice,
Liquid contents such as soft drinks such as tea, dairy drinks, coffees, etc. are filled and packaged, then capped and sealed, and then, for example, a hot water shower at about 70 ° C. or less, etc. Even if it is dissipated for 10 minutes and subjected to sterilization treatment (low temperature sterilization), the tight adhesion of the stretch label to the outer peripheral surface of the body of the resin bottle is not inferior, and both of them adhere tightly and the stretch label is It does not slip off from the outer peripheral surface of the body of the resin bottle and does not fall off.This makes it possible to obtain a stretch label with excellent properties such as toughness, surface kill resistance, and other properties very well. It can be mounted on the outer peripheral surface. In the present invention, the resin bottle and the stretch label can be separated very easily and easily after the contents in the resin bottle have been used, and can be separated and collected.

Next, in the present invention, examples of the resin bottle made of plastic or the like to which a stretch label is attached include polyethylene terephthalate resin, polynaphthalene terephthalate resin, polypropylene resin or polyethylene resin. It is preferably applied to a stretch blow molding container made of a resin such as the polyolefin resin, polyvinyl chloride resin, or the like. Thus, the above stretch-blow molding container is for filling soft drinks such as water and tea, and is of a cylindrical shape or different from that, by cooling after filling the body portion with the contents. It may be a plastic molded bottle having a shape having a concave panel for improving buckling strength capable of absorbing the reduced pressure state caused.
Further, in the present invention, as the contents to be filled and packaged in a resin bottle, water, carbonated drink, fruit juice, tea, milk drink,
Liquid contents such as soft drinks such as coffee and the like can be mentioned.

[0038]

EXAMPLES Next, the present invention will be further described with specific examples.
Will be explained in detail. Example 1 (1). First, prepare the resin compositions of (a) to (c) below.
Made (I). Ethylene polymerized using a single-site catalyst
Ren-α / olefin copolymer [density, 0.928 g /
m³, Melt flow rate (MFR), 2.0 g / 10
Min] 100.0 parts by weight and synthetic silica (anti-blockin
0.5 parts by weight and erucic acid amide (lubricant) 0.05
Parts by weight and ethylenebisoleylamide (lubricant) 0.05
The resin composition was prepared by thoroughly kneading the parts by weight. (B). High-pressure method low-density polyethylene [HPLDPE, dense
Degree, 0.924g / m ³, Melt flow rate (MF
R), 0.7 g / 10 minutes] 100.0 parts by weight and erucic acid
Sufficiently knead with 0.05 parts by weight of amide (lubricant) to make resin
A composition was prepared. (C). Ethylene polymerized using a single-site catalyst
Ren-α / Olfie Copolymer [Density, 0.928 g / m
3, melt flow rate (MFR), 2.0g / 10
Min] 100.0 parts by weight and synthetic silica (anti-blockin
Agent) 0.5 part by weight to thoroughly knead the resin composition.
Made Next, using the resin composition prepared above,
These are multi-manifold type T-die co-extruders
To a layer of the resin composition (a) of 20 μm,
The layer of the resin composition of (b) is 50 μm, and the resin of (c) is
Co-extruded layers of composition to 20 μm, or 3 layers each
The unstretched resin film consisting of
Pass the stretched resin film between the heating rolls to 3% lengthwise.
Direction, then heat set and co-extruded into a long multi-layer structure.
A laminated resin film was produced. (2). Next, the long multi-layered coextruded resin produced above
First, carbon black was used as a pigment on one side of the film.
Polyurethane resin-based black ink (The Inktech stock
Company made, product name, 991 ink) and use to print the desired character
Printing, then urethane based with indigo, red and yellow pigments
Resin color ink (The Inktech Co., Ltd., trade name,
639 indigo, 212 red, 423 yellow), gravure stamp
Depending on the printing method, a predetermined number of characters, symbols, figures, patterns, etc.
The pattern printing is done in three columns and the label is constructed for each column.
Repeat printing for each unit, and then, after that,
The main purpose is to hide the background of the design and the solution inside.
Urethane resin-based white ink with tan-white pigment (large
Made by Nippon Ink Chemical Co., Ltd.
Uses NTV / XOX1392 concrete white) and white solid
Print an ink layer (dry film thickness, 4 μm) and print a long strip.
Bell original film was manufactured. (3). Next, the long label original fabric film manufactured above.
Use a slitter to move the rum vertically and horizontally.
Cut at the center line of the space that separates the rows and
A label film constituting a tri-label was manufactured. Next
For the label film manufactured above,
The inner side of the pattern layer is the inner surface and the printed pattern layer is inside.
Is a two-component curing type polyurethane resin on the surface of the end on the surface side?
Adhesive consisting of polyester polyol and aliphatic diiso
Cyanate-based adhesive) is applied to form an adhesive layer.
Formed, on the other hand, the front side of the label film
Corona discharge treatment is applied to the surface to form a corona discharge treated surface
After that, the both ends of the adhesive layer and the corona
The surface of the electric discharge treated surface is made to face and overlap, and after that,
Join both ends of the polymerized part via the adhesive layer etc.
To form a joint and manufacture a tubular stretch label
did. Next, the tubular stretch label manufactured above
Use this, and use a stretcher, about 15%
Expand and stretch the polyethylene terephthalate resin.
-Mounted on the outer peripheral surface of the body of the molded container. Furthermore, in the above
Polyethylene telef with a tubular stretch label
Inside the stretch blow molding container made of tarret resin, the gas volume
Um (G.V.) 1.8 kgf / cm²Charcoal prepared
After filling and packaging with acid water and capping, hot water at about 68 ° C
A packaged product was produced by sterilizing by spreading for 40 minutes. Up
In the packaging products manufactured in the above, the stretch label is
Stretch blow molding capacity made of polyethylene terephthalate resin
Firmly and tightly adhere to the outer surface of the body of the container,
No drop or horizontal wrinkles were observed.

In addition, in the above, the long label original fabric film produced by applying the above-mentioned printed pattern is lengthened by a slitter at the center line of the space separating each row in the longitudinal direction. -Shaped label original film is produced, and then the surface of the printed pattern portion is made the inner surface side, and on the surface of the end portion on the inner surface side having the printed pattern portion, the two-component curing type polyurethane-based film is prepared in the same manner as above. An adhesive layer made of a resin is formed to form an adhesive layer, while a corona discharge treatment is applied to the surface of the end portion on the surface side of the film to form a corona discharge treated surface. The adhesive layer and the surface of the corona discharge treated surface are overlapped so as to face each other, and then both end portions of the polymerized portion are joined to each other through the adhesive layer or the like to form a joined portion and a cylinder. While manufacturing the strip, use the cutter inside the label loading machine to It was cut into direction to produce a tubular stretch label to continuous. Next, using the tubular stretch label produced above, this was expanded by about 15% using a stretcher, and the outer circumference of the body of the stretch blow molding container made of polyethylene terephthalate was expanded. It was attached to the surface. Further, 1.8 kgf / g of gas volume (G.V.) was placed in a stretch blow molding container made of polyethylene terephthalate resin fitted with the above-mentioned tubular stretch label.
The carbonated water prepared in cm ² was filled and packaged, and after capping, hot water of about 68 ° C. was diffused for 40 minutes to perform sterilization treatment to manufacture a packaged product. In the packaging product manufactured above,
The stretch label firmly adhered tightly to the outer peripheral surface of the body of the stretch-blow molding container made of polyethylene terephthalate resin, and no looseness, dropout, wrinkles, etc. were observed.

Example 2 (1). The resin compositions (a) to (c) prepared in Example 1 above were used in the same manner, and these were used in exactly the same manner as in Example 1 above using a multi-manifold type T-die co-extruder. , A layer of the resin composition of (a) is 20μ
m, (b) a layer of the resin composition of 50 μm, and (c) a layer of the resin composition of 20 μm.
To produce an unstretched resin film consisting of layers, after which,
While passing the unstretched resin film between heating rolls, 5
% The film was stretched in the longitudinal direction and then heat-set to produce a long-sized multilayer coextrusion laminated resin film. Hereinafter, in exactly the same manner as in Example 1 above, desired characters were printed on one surface of the long-sized multilayer coextruded resin film produced above, and then predetermined pattern printing was printed, after which, Then, a white solid ink layer (dry film thickness, 4 μm) was printed for the main purpose of design background and concealment of inner solution, to produce a long label original film. (2). Furthermore, in exactly the same manner as in Example 1 above, using the long-sized label original fabric film produced above, a label film constituting one stretch label was produced, and then the label film produced above With the surface of the printed pattern layer as the inner surface, and an adhesive (polyester polyol and aliphatic diisocyanate) made of a two-component curing type polyurethane resin on the surface of the end portion on the inner surface side having the printed pattern layer. To form an adhesive layer, and, on the other hand, form a corona discharge treated surface by subjecting the surface of the end portion on the surface side of the label film to corona discharge treatment, and thereafter, Both ends thereof are overlapped with the adhesive layer and the surface of the corona discharge treated surface facing each other, and thereafter, the both ends of the polymerized portion are joined together through the adhesive layer or the like to form a joined portion. To form It was produced tubular stretch label. Next, using the tubular stretch label manufactured above,
Using a stretcher, expand this by about 15%,
The stretch blow molding container made of polyethylene terephthalate resin was mounted on the outer peripheral surface of the body. Furthermore, the stretch blow molding container made of polyethylene terephthalate resin fitted with the above-mentioned tubular stretch label is filled with carbonated water in which gas volume (GV) is adjusted to 1.8 kgf / cm ^2. After wrapping and capping, hot water at about 68 ° C 40
A packaged product was produced by dissipating for minutes and sterilization. In the packaged product produced above, the stretch label is tightly and tightly adhered to the outer peripheral surface of the body of the stretch-blow molded container made of polyethylene terephthalate resin, and its slack, dropout, wrinkling, etc. are recognized. I couldn't do it.

Example 3 (1). The resin compositions (a) to (c) prepared in Example 1 above were used in the same manner, and these were used in exactly the same manner as in Example 1 above using a multi-manifold type T-die co-extruder. , A layer of the resin composition of (a) is 20μ
m, (b) a layer of the resin composition of 50 μm, and (c) a layer of the resin composition of 20 μm.
To produce an unstretched resin film consisting of layers, after which,
While passing the unstretched resin film between heating rolls,
% The film was stretched in the longitudinal direction and then heat-set to produce a long-sized multilayer coextrusion laminated resin film. Hereinafter, in exactly the same manner as in Example 1 above, desired characters were printed on one surface of the long-sized multilayer coextruded resin film produced above, and then predetermined pattern printing was printed, after which, Then, a white solid ink layer (dry film thickness, 4 μm) was printed for the main purpose of design background and concealment of inner solution, to produce a long label original film. (2). Furthermore, in exactly the same manner as in Example 1 above, using the long-sized label original fabric film produced above, a label film constituting one stretch label was produced, and then the label film produced above about,
The surface of the printed pattern layer is made the inner surface side, and an adhesive (polyester polyol and aliphatic diisocyanate) made of a two-component curing type polyurethane resin is formed on the surface of the inner surface side end portion having the printed pattern layer. To form the adhesive layer, and on the other hand, the surface of the end of the label film is subjected to corona discharge treatment to form a corona discharge treated surface, and then both ends thereof. Part, the adhesive layer and the surface of the corona discharge treated surface are overlapped with each other, and then both ends of the polymerized part are joined together via the adhesive layer or the like to form a joint part. Then, a tubular stretch label was manufactured. Next, the tubular stretch label produced above is used, and this is stretched for about 15
%, And was mounted on the outer peripheral surface of the body of a stretch blow molding container made of polyethylene terephthalate resin. Furthermore,
In a stretch blow molding container made of polyethylene terephthalate resin fitted with the above-mentioned tubular stretch label, carbonated water prepared by adjusting gas volume (G.V.) to 1.8 kgf / cm ² was filled and packaged. After capping, hot water at about 68 ° C. was diffused for 40 minutes to perform sterilization treatment to manufacture a packaged product. In the packaged product produced above, the stretch label is a stretched blower made of polyethylene terephthalate resin.
It was firmly and tightly adhered to the outer peripheral surface of the body of the molded container, and its looseness, falling-off, generation of horizontal wrinkles, etc. were not observed.

Example 4 (1). The resin compositions (a) to (c) prepared in Example 1 above were used in the same manner, and these were used in exactly the same manner as in Example 1 above using a multi-manifold type T-die co-extruder. , A layer of the resin composition of (a) is 20μ
m, (b) a layer of the resin composition of 50 μm, and (c) a layer of the resin composition of 20 μm.
To produce an unstretched resin film consisting of layers, after which,
While passing the unstretched resin film between heating rolls,
The film was stretched in the 0% machine direction and then heat-set to produce a long-sized multilayer coextrusion laminated resin film. Hereinafter, in exactly the same manner as in Example 1 above, desired characters were printed on one surface of the long-sized multilayer coextruded resin film produced above, and then predetermined pattern printing was printed, after which, in addition,
A long label original film was manufactured by printing a white solid ink layer (dry film thickness, 4 μm) mainly for the background of the design and for hiding the inner solution. (2). Furthermore, in exactly the same manner as in Example 1 above, using the long-sized label original fabric film produced above, a label film constituting one stretch label was produced, and then the label film produced above about,
The surface of the printed pattern layer is made the inner surface side, and an adhesive (polyester polyol and aliphatic diisocyanate) made of a two-component curing type polyurethane resin is formed on the surface of the inner surface side end portion having the printed pattern layer. To form the adhesive layer, and on the other hand, the surface of the end of the label film is subjected to corona discharge treatment to form a corona discharge treated surface, and then both ends thereof. Part, the adhesive layer and the surface of the corona discharge treated surface are overlapped with each other, and then both ends of the polymerized part are joined together via the adhesive layer or the like to form a joint part. Then, a tubular stretch label was manufactured. Next, the tubular stretch label produced above is used, and this is stretched for about 15
%, And was mounted on the outer peripheral surface of the body of a stretch blow molding container made of polyethylene terephthalate resin. Furthermore,
In a stretch blow molding container made of polyethylene terephthalate resin fitted with the above-mentioned tubular stretch label, carbonated water prepared by adjusting gas volume (G.V.) to 1.8 kgf / cm ² was filled and packaged. After capping, hot water at about 68 ° C. was diffused for 40 minutes to perform sterilization treatment to manufacture a packaged product. In the packaged product produced above, the stretch label is a stretched blower made of polyethylene terephthalate resin.
It was firmly and tightly adhered to the outer peripheral surface of the body of the molded container, and its looseness, falling-off, generation of horizontal wrinkles, etc. were not observed.

Example 5 (1). First, prepare the resin compositions of (a) to (c) below.
Made (I). Ethylene polymerized using a single-site catalyst
Ren-α / olefin copolymer [density, 0.928 g /
m³, Melt flow rate (MFR), 2.0 g / 10
Min] 100.0 parts by weight and synthetic silica (anti-blockin
0.5 parts by weight and erucic acid amide (lubricant) 0.05
Parts by weight and ethylenebisoleylamide (lubricant) 0.05
The resin composition was prepared by thoroughly kneading the parts by weight. (B). High-pressure method low-density polyethylene [HPLDPE, dense
Degree, 0.924g / m ³, Melt flow rate (MF
R), 0.7 g / 10 minutes] 100.0 parts by weight and erucic acid
Sufficiently knead with 0.05 parts by weight of amide (lubricant) to make resin
A composition was prepared. (C). High-pressure method low-density polyethylene [HPLDPE, dense
Degree, 0.924g / m ³, Melt flow rate (MF
R), 0.7 g / 10 min] 30.0 parts by weight and single
Of ethylene-α-olefin polymerized using a nickel-based catalyst
Copolymer [density, 0.917 g / m³] 70.0 weight
Parts and 0.5 parts by weight of synthetic silica (anti-blocking agent)
And were sufficiently kneaded to prepare a resin composition. Then above
Use the resin composition prepared in
Using a folder type T-die co-extruder,
The layer of the resin composition is 20 μm, and the resin composition of (b) is used.
Layer of 50 μm, and layer of (c) resin composition of 20
Unstretched resin film consisting of 3 layers coextruded to
Film, and then the unstretched resin film
Stretching 10% in lengthwise direction while passing between heating rolls, then
Then, heat fix it to make a long multi-layer coextrusion resin film.
I made it. (2). Next, the long multi-layered coextruded resin produced above
First, carbon black was used as a pigment on one side of the film.
Polyurethane resin-based black ink (The Inktech stock
Company made, product name, 991 ink) and use to print the desired character
Printing, then urethane based with indigo, red and yellow pigments
Resin color ink (The Inktech Co., Ltd., trade name,
639 indigo, 212 red, 423 yellow), gravure stamp
Depending on the printing method, a predetermined number of characters, symbols, figures, patterns, etc.
The pattern printing is done in three columns and the label is constructed for each column.
Repeat printing for each unit, and then, after that,
The main purpose is to hide the background of the design and the solution inside.
Urethane resin-based white ink with tan-white pigment (large
Made by Nippon Ink Chemical Co., Ltd.
Uses NTV / XOX1392 concrete white) and white solid
Print an ink layer (dry film thickness, 4 μm) and print a long strip.
Bell original film was manufactured. (3). Next, the long label original fabric film manufactured above.
Rum, rotary type (cutter inside label mounting machine)
Using the centerline of the spacing that separates each row in the horizontal direction.
Label labels that make up one stretch label.
The film was manufactured. Then, the label film produced above
With respect to the Rum, make the side of the printed pattern layer the inner side and
2 liquid curing type on the surface of the inner side edge with the printed pattern layer of
Adhesive made of polyurethane resin (polyester resin
Adhesion based on lyol and aliphatic diisocyanate
Agent) to form an adhesive layer, while the film
Corona discharge treatment is applied to the surface of the end on the front side to release corona.
Electrolytically treated surface is formed, and then both ends are
The adhesive layer and the surface of the corona discharge treated surface face each other and are superposed.
After that, the both ends of the overlapped portion are adhered to the above adhesive layer.
, Etc. to form a joint,
Chiravel was manufactured. Next, the cylindrical strike manufactured above
Use a retch label and use a stretcher
And expanded about 15%, polyethylene terephthalate
Attached to the outer peripheral surface of the body of a resin stretch blow molding container.
It was In addition, a port with the tubular stretch label attached above
Stretch blow molding container made of polyethylene terephthalate resin
Gas volume (G.V.) of 1.8 kgf / c
m²After filling and packaging the carbonated water prepared in, after capping,
Packaged by dissipating hot water at about 68 ° C for 40 minutes and sterilizing
Manufactured goods. In the packaging product manufactured above,
Letch label is made of polyethylene terephthalate resin
Firmly and closely adhere to the outer surface of the body of the stretch blow molded container.
The slack, dropout, and wrinkles were not observed.
It was

Example 6 Ethylene-vinyl acetate copolymer (vinyl acetate content 5w
t%) 100.0 parts by weight and erucic acid amide (lubricant)
0.05 parts by weight and ethylenebisoleylamide (lubricant)
0.05 parts by weight and synthetic silica (anti-blocking agent)
A resin composition was prepared by sufficiently kneading with 0.5 part by weight. Next, using the resin composition prepared above, an unstretched resin film having a film thickness of 80 μm was produced using a T-die coextruder, and then the unstretched resin film was formed. The film was stretched in the longitudinal direction by 5% while passing between heating rolls, and then heat-set to produce a resin film. Next, using the resin film produced as described above, and in the same manner as in Example 1 above, and in exactly the same manner as in Example 1 above, a stretch having the same effect as Example 1 above. The label could be manufactured.

Example 7 First, high-pressure process low-density polyethylene (LDPE, density,
0.925 g / m ³ ) 100.0 parts by weight, synthetic silica (anti-blocking agent) 0.5 parts by weight, erucic acid amide (lubricant) 0.05 parts by weight, ethylene bisoleylamide (lubricant) 0.05 parts by weight And were sufficiently kneaded to prepare a resin composition. Next, using the resin composition prepared above, using a multi-manifold type T-die extruder, an unstretched resin film composed of a single layer film of 80 μm was produced, and then the unstretched resin film was produced. Stretching the resin film of 7% in the longitudinal direction while passing it between heating rolls,
Then, it was heat-set to produce a long resin film. Next, using the resin film produced above, the same procedure as in the above Example 1 was performed in the same manner as in the above Example 1.
A stretch label having the same effects as in Example 1 above could be manufactured in exactly the same manner as in.

Comparative Example 1 (1). The resin compositions (a) to (c) prepared in Example 1 above were used in the same manner, and these were used in exactly the same manner as in Example 1 above using a multi-manifold type T-die co-extruder. , A layer of the resin composition of (a) is 20μ
m, (b) a layer of the resin composition of 50 μm, and (c) a layer of the resin composition of 20 μm.
An elongate multilayer coextruded laminated resin film composed of unstretched resin films of layers was produced. Hereinafter, in exactly the same manner as in Example 1 above, desired characters were printed on one surface of the long-sized multilayer coextruded resin film produced above, and then predetermined pattern printing was printed, after which, Then, a white solid ink layer (dry film thickness, 4 μm) was printed for the main purpose of design background and concealment of inner solution, to produce a long label original film. (2). Furthermore, in exactly the same manner as in Example 1 above, using the long-sized label original fabric film produced above, a label film constituting one stretch label was produced, and then the label film produced above about,
The surface of the printed pattern layer is made the inner surface side, and an adhesive (polyester polyol and aliphatic diisocyanate) made of a two-component curing type polyurethane resin is formed on the surface of the inner surface side end portion having the printed pattern layer. To form the adhesive layer, and on the other hand, the surface of the end of the label film is subjected to corona discharge treatment to form a corona discharge treated surface, and then both ends thereof. Part, the adhesive layer and the surface of the corona discharge treated surface are overlapped with each other, and then both ends of the polymerized part are joined together via the adhesive layer or the like to form a joint part. Then, a tubular stretch label was manufactured. Next, the tubular stretch label produced above is used, and this is stretched for about 15
%, And was mounted on the outer peripheral surface of the body of a stretch blow molding container made of polyethylene terephthalate resin. Furthermore,
In a stretch blow molding container made of polyethylene terephthalate resin fitted with the above-mentioned tubular stretch label, carbonated water prepared by adjusting gas volume (G.V.) to 1.8 kgf / cm ² was filled and packaged. After capping, hot water at about 68 ° C. was diffused for 40 minutes to perform sterilization treatment to manufacture a packaged product. In the packaged product produced above, the stretch label is a stretched blower made of polyethylene terephthalate resin.
Although it adheres to the outer peripheral surface of the body of the molding container, occurrence of horizontal wrinkles, slackness, etc. was observed, and it was also observed that it fell off.
Moreover, the external appearance was inferior.

Comparative Example 2 (1). The resin compositions (a) to (c) prepared in Example 1 above were used in the same manner, and these were used in exactly the same manner as in Example 1 above using a multi-manifold type T-die co-extruder. , A layer of the resin composition of (a) is 20μ
m, (b) a layer of the resin composition of 50 μm, and (c) a layer of the resin composition of 20 μm.
A layer of unstretched resin film is produced, and then the unstretched resin film is stretched in the longitudinal direction by 1% while passing through a heating roll, and then heat-set to obtain a long-shaped multilayer film. An extruded resin film was produced. Hereinafter, in exactly the same manner as in Example 1 above, desired characters were printed on one surface of the long-sized multilayer coextruded resin film produced above, and then predetermined pattern printing was printed, after which, Then, a white solid ink layer (dry film thickness, 4 μm) was printed for the main purpose of design background and concealment of inner solution, to produce a long label original film. (2). Furthermore, in exactly the same manner as in Example 1 above, using the long-sized label original fabric film produced above, a label film constituting one stretch label was produced, and then the label film produced above about,
The surface of the printed pattern layer is made the inner surface side, and an adhesive (polyester polyol and aliphatic diisocyanate) made of a two-component curing type polyurethane resin is formed on the surface of the inner surface side end portion having the printed pattern layer. To form the adhesive layer, and on the other hand, the surface of the end of the label film is subjected to corona discharge treatment to form a corona discharge treated surface, and then both ends thereof. Part, the adhesive layer and the surface of the corona discharge treated surface are overlapped with each other, and then both ends of the polymerized part are joined together via the adhesive layer or the like to form a joint part. Then, a tubular stretch label was manufactured. Next, the tubular stretch label produced above is used, and this is stretched for about 15
%, And was mounted on the outer peripheral surface of the body of a stretch blow molding container made of polyethylene terephthalate resin. Furthermore,
In a stretch blow molding container made of polyethylene terephthalate resin fitted with the above-mentioned tubular stretch label, carbonated water prepared by adjusting gas volume (G.V.) to 1.8 kgf / cm ² was filled and packaged. After capping, hot water at about 68 ° C. was diffused for 40 minutes to perform sterilization treatment to manufacture a packaged product. In the packaged product produced above, the stretch label is a stretched blower made of polyethylene terephthalate resin.
Although it adhered to the outer peripheral surface of the body of the molding container, occurrence of horizontal wrinkles, slackness, and the like were also observed, and the appearance was inferior in design.

Experimental Example The stretch label produced in each of Examples 1 to 7 and Comparative Examples 1 to 2 was measured for the following items. (1). Measurement of thermal contraction rate and thermal expansion rate at 68 ° C This is a 100 mm width × 100 mm width for a stretch label.
Cut out a 100 mm wide test piece and put it in hot water at 68 ° C for 1
Soaked for a minute. Then, the dimensions of the test piece were measured, and the contraction rate and expansion rate in the vertical and horizontal directions were calculated and measured. (2). Measurement of label appearance suitability This is, for a stretch label, a tubular stretch label is attached to a bottle, then the contents are filled and packaged and sealed, and then, after the pasteurization treatment, the stretch label is The suitability was visually evaluated for wrinkle generation, falling off, looseness, and other appearances. In the table,
◎ is almost good, ○ is good, △ is a little bad, × is
Indicates no suitability. The above measurement results are shown in Table 1 below.

[0049] In Table 1 above, the units of the thermal contraction rate and the thermal expansion rate are
It is [%].

As is clear from the measurement results shown in Table 1 above, in the examples according to the present invention, the tubular stretch label is the body of the stretch blow molding container made of polyethylene terephthalate resin. It was firmly and tightly adhered to the outer peripheral surface, and its looseness, falling-off, generation of horizontal wrinkles, etc. were not recognized, and the appearance was excellent. On the other hand, in the comparative example, although the tubular stretch label adheres to the outer peripheral surface of the body of the stretch-blow molding container made of polyethylene terephthalate resin, slackness, generation of horizontal wrinkles, etc. are recognized. In some cases, it may fall off, and the external appearance is inferior in design.

[0051]

As is apparent from the above description, the present invention is a tubular stretch label that is filled and packaged with a liquid content and is attached to the outer peripheral surface of the body of a resin bottle that is subjected to low temperature heat sterilization treatment. Further, as a raw film constituting the tubular stretch label, a single-layer or multi-layer coextrusion laminated resin film made of a polyolefin resin is used, and stretched in the longitudinal direction by about 2 to 15%, Further, due to the action of hot water subjected to low-temperature heat sterilization treatment, the label shrinks in the label longitudinal direction (MD) in the range of 1 to 12% and in the label transverse direction (TD) in the range of 0.2 to 5.0%. A raw stretch film prepared to expand is used to produce a tubular stretch label, and the tubular stretch label is used to produce a polyethylene terephthalate resin. It is attached to the outer peripheral surface of the body of a resin bottle made of, for example, and then the contents are filled and packaged and sealed, and then, in a resin bottle made of the polyethylene terephthalate resin or the like, 70 ° C. or lower, Normally, 67 ° C ~
The tubular stretch label attached to the outer peripheral surface of the body portion of the resin bottle is a bottle-shaped stretch label of which the hot water at about 68 ° C. is diffused for about 10 to 30 minutes to perform a low temperature heat sterilization treatment to produce a packaged product. It adheres firmly to the outer peripheral surface of the body, and its dropout etc. is not observed, and particularly, it is applied to the above-mentioned tubular stretch label, for example, load such as water pressure due to bottle washing treatment before filling contents, or contents The load of heat, etc. due to heat sterilization after filling the material, etc., and various other loads do not have any effect on the physical properties of the raw film that makes up the stretch label. , Whitening of the raw film constituting the stretch label, occurrence of surface wrinkles, tearing, etc., and further appearance defect,
It prevents appearance of various problems such as deterioration of beauty, and uses the self-stretching or self-healing properties of the film to firmly and closely adhere to the outer peripheral surface of the bottle body. It is possible to produce a very beautiful stretch label that is excellent in

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an outline of a configuration of an example of a stretch label according to the present invention.

FIG. 2 is a schematic configuration diagram showing an outline of a configuration of an example of a stretch label according to the present invention.

FIG. 3 is a schematic configuration diagram showing an outline of a configuration of an example of a stretch label according to the present invention.

FIG. 4 is a schematic configuration diagram showing an outline of a configuration of an example of a stretch label according to the present invention.

[Explanation of symbols]

1 original film 2 Print pattern part 3 Adhesive layer 4 Easy adhesion treatment layer 5 joints 6 plastic bottles 7 contents 8 caps A tubular stretch label B Cylindrical stretch label resin bottle C packaging products

Continued front page    F term (reference) 3E062 AA09 AB01 AC02 BA20 BB06                       BB10 DA02 DA07                 3E067 AA22 AB99 AC01 BA18A                       BB14A BB15A BB18A CA01                       CA02 EE48 FB01 GC01

Claims (7)

[Claims] 1. A tubular stretch label that is filled and packaged with a liquid content and is attached to the outer peripheral surface of the body of a resin bottle that is subjected to low-temperature heat sterilization, and further comprises the tubular stretch label. By the action of the hot water that is subjected to the low temperature heat sterilization treatment described above, the original film
Stretch label characterized by shrinking in the range of 1 to 12% in D) and expanding in the range of 0.2 to 5.0% in the label transverse direction (TD). 2. The stretch label according to claim 1, wherein the liquid content is water, carbonated drink, fruit juice, tea, milk drink, or coffee. 3. The stretch label according to claim 1, wherein the low temperature heat sterilization treatment is a low temperature heat sterilization treatment with hot water at 70 ° C. or lower. 4. The stretch label according to any one of claims 1 to 3, wherein the low temperature heat sterilization treatment is a low temperature heat sterilization treatment with hot water in a range of 63 ° C to 70 ° C. 5. The stretch label according to claim 1, wherein the resin bottle comprises a blow molding container made of polyethylene terephthalate resin or polypropylene resin. 6. A tubular stretch label is provided with an adhesive layer on the inner surface of one end of a raw film, and the outer surface of the other end of the above-mentioned raw film on the other side. In addition, an easy-adhesion treatment layer is provided, and the surface of the adhesive layer and the surface of the easy-adhesion treatment layer are opposed to each other, and the polymerized portion is joined to form a tubular stretch label having a joining portion. The stretch label according to any one of claims 1 to 5 above. 7. A raw film constituting a tubular stretch label is low-density polyethylene (LDPE), linear (linear) low-density polyethylene (polymer polymerized using a multi-site catalyst, LLDPE). Ethylene polymerized using a metallocene catalyst (single-site catalyst)
α-olefin copolymer, medium density polyethylene (MDP
E), high-density polyethylene (HDPE), polypropylene resin, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, or ethylene-methacrylic acid copolymer, either alone or in coextrusion. The stretch label according to any one of claims 1 to 6, which is formed of a molded single-layer or multi-layer laminated resin film.