JP2007015747A - Shrinkable label, and pet bottle for beer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shrinkable label with which a general transparent PET bottle capable of being easily recycled can be used as a beer container, and to provide a PET bottle for beer which can be recycled and is inexpensive by using the shrinkable label. <P>SOLUTION: This shrinkable label 2 is closely fitted to the surface of the transparent PET bottle which houses a beer. The shrinkable label has a colored printing layer 22 having light-shielding property over the whole surface of at least one surface of a film base material 21. The colored printing layer 22 is preferably blackish brown, green, blue or black. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a shrink label and a plastic bottle for beer. Specifically, the present invention relates to a shrink label in which a general transparent plastic bottle that can be easily recycled can be used as a beer container, and a plastic bottle for beer using the same.

  In recent years, especially in the field of drinkable foods such as soft drinks, PET (polyethylene) replaces conventional glass bottles and cans because it has many advantages such as light weight, impact resistance, corrosion resistance, transparency, and low cost. The use of PET bottles made of terephthalate) has become mainstream, and along with this, PET bottle recycling business has been actively promoted.

  Against this background, attempts have been made to use plastic bottles in beer containers, which until now have been common in glass bottles and cans. For example, since ordinary PET bottles have high transparency, sunlight transmittance is high, and there is a risk that beer may undergo chemical changes and impair the flavor that is also the greatest feature of beer. It has been considered that a plastic bottle itself is colored and made opaque by mixing a filler such as a pigment (Patent Document 1, paragraph 0030).

However, PET bottles made opaque by mixing pigments into the resin are impossible to recycle like ordinary transparent PET bottles and must be disposed of as waste. It becomes a problem.
Paragraph 0030 of JP 2001-48182 A

  Therefore, an object of the present invention is to provide a shrink label that can use a general transparent PET bottle that can be easily recycled as a beer container, and a recyclable and inexpensive beer PET bottle that uses the shrink label.

  Other problems of the present invention will become apparent from the following description.

  The above problems are solved by the following inventions.

(Claim 1)
A shrink label, which is in close contact with the surface of a transparent plastic bottle containing beer, and has a colored printing layer having light-shielding properties on at least one entire surface of a film substrate.

(Claim 2)
The shrink label according to claim 1, wherein the colored printing layer is brown, green, blue or black.

(Claim 3)
A plastic bottle for beer, wherein the shrink label according to claim 1 or 2 is adhered to at least the outer surface of the body part of the transparent plastic bottle.

  According to the present invention, it is possible to provide a shrink label in which a general transparent PET bottle that can be easily recycled can be used as a beer container and a recyclable and inexpensive beer bottle using the same.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a partial cross section of a plastic bottle for beer according to the present invention. In the figure, 1 is a plastic bottle main body, and 2 is a shrink label adhered to the outer surface of the plastic bottle main body 1.

  The plastic bottle body 1 is made of a transparent plastic bottle that is generally used as a beverage plastic bottle, and a plastic bottle that can be recycled by ordinary recycling means can be used.

  The shrink label 2 is usually made of a cylindrical heat-shrinkable plastic film having a diameter larger than the maximum diameter of the body portion 11 of the plastic bottle body 1. By contracting, it is in close contact with the outer surface of the plastic bottle body 1.

  Examples of the plastic film that can be used for the shrink label 2 include a stretched plastic film having heat-shrinkability based on a polyester film such as polyethylene terephthalate or polybutylene terephthalate, or a polyolefin film such as polyethylene or polypropylene.

  As shown in FIG. 2, a colored printing layer 22 is formed on the entire surface of at least one surface of the film base 21 constituting the shrink label 2. The colored printing layer 22 is formed by applying light-shielding ink to at least one entire surface of the film base material 21 by an appropriate printing means such as flexographic printing or gravure printing. The shrink label 2 has a light-shielding property due to the printing of the colored printing layer 22, and the beer accommodated in the PET bottle main body 1 is protected from light to maintain the quality.

  The color of the colored printing layer 22 is not particularly limited as long as it can provide light-shielding properties to the shrink label 2. However, if the color is the same as that of a general beer bottle, the image as a beer container is not impaired. preferable. For example, when printing is performed using an ink with a Munsell value of 9YR5.2 / 2.0, an amber color similar to a beer bottle can be obtained. In addition, green, blue, and black are also preferable.

  In the present invention, in order to say that the light shielding property is imparted by the shrink label, it is preferable to substantially cut light rays of 540 nm or less.

  The film substrate 21 may be a transparent film, a translucent film, or an opaque film. However, when a translucent film or an opaque film is used, the shrink film 2 is brought into close contact with the outer surface of the PET bottle body 1. It is preferable that the colored printing layer 22 be on the outside.

  When a transparent film is used, the colored printing layer 22 may be either front or back, but in general, the colored printing layer 22 is attached to the PET bottle body 1 when the shrink film 2 is brought into close contact with the outer surface of the PET bottle body 1. Try to be inside the tangent.

  The shrink label 2 is preferably provided with gas barrier properties in order to prevent oxidative degradation of beer and escape of carbon dioxide gas. Generally, since PET has gas permeability, the gas permeation of the PET bottle main body 1 can be blocked by the shrink label 2.

  In addition, the shrink label 2 can be provided with an appropriate printing layer 23 such as characters and designs in addition to the colored printing layer 22. The printing layer 23 shown in FIG. 2 is formed on the surface of the film substrate 21 opposite to the colored printing layer 22, but the film substrate 21 is a transparent or translucent film, and the colored printing layer 22 side is the PET bottle body. When the shrink label 2 is brought into intimate contact with 1, as shown in FIG. 3, after forming the printing layer 23 on one surface of the film substrate 21, the colored printing layer 22 is further applied to the entire surface from the printing layer 23. It is also preferable to form

  Further, as shown in FIG. 4, it is also preferable to provide a configuration in which the print layers 23 and 24 are visible on both sides of the shrink label 2 by providing another print layer 24 from above the colored print layer 22. In this case, for example, if the shrink label 2 is closely attached so that the printed layer 24 side is in contact with the PET bottle body 1, the printed layer 24 cannot be visually recognized from the outside. By making it an information surface useful for consumers, it is possible to spontaneously promote separation of garbage by allowing the consumer to spontaneously peel the shrink label 2 from the plastic bottle body 1 while enjoying it.

  The shrink label 2 needs to be in close contact with at least the outer surface of the body portion 11 of the plastic bottle body 1, but may be in close contact with the outer surface of the neck portion 12 of the plastic bottle body 1. From the viewpoint of maintaining the quality of beer.

  Further, in the shrink label 2 according to the present invention, a perforation 25 is formed at an appropriate position along the height direction of the plastic bottle body 1 in order to facilitate peeling from the plastic bottle body 1 at the time of disposal. It is preferable. Since the perforation 25 is formed in a very thin cut line shape on the film 21, unlike the case where it is formed in a hole shape, the perforation 25 hardly transmits light, so that there is no possibility of reducing the quality of beer.

  As for the shrink label 2, as shown in FIG. 5, it is also preferable that the bottom part 26 of the shrink label 2 corresponding to the bottom part of the plastic bottle main body 1 is obstruct | occluded. Since the penetration | invasion of the light from a bottom part can also be blocked | prevented, the quality maintenance function of beer can be improved. In this case, after the shrink label 2 is formed in a bag shape having a bottom portion 26, the PET bottle main body 1 is inserted into the bag-shaped shrink label 2 having the bottom portion 26, and is heated and shrunk so that the outside of the PET bottle main body 1 is removed. Adhere to the surface.

  Further, as shown in FIG. 5, after the beer is accommodated in the plastic bottle body 1 and closed with the cap 3, the shrink wrap 4 may be brought into close contact with the outer surface of the cap 3. Similarly to the shrink label 2, if the shrink wrap 4 is a colored printed layer having at least one entire surface light-shielding, the beer quality maintaining function can be further improved.

  In general, transparent PET bottles are highly unsuitable as beer containers due to their high light transmittance. However, according to the shrink label 2 of the present invention and beer plastic bottles using the same, the beer can be removed by the shrink label 2. Since the necessary functions can be given to the container for use, recyclable ordinary PET bottles can be used as they are, and once the shrink label 2 is peeled off, the recyclability of the PET bottles is not impaired at all. In addition, since it is not necessary to construct a production line for beer-dedicated PET bottles, it is possible to obtain a beer bottle that is inexpensive and environmentally friendly.

  In addition, since product names, trademarks, etc. can be directly printed on the shrink label 2, it is not necessary to attach these separately printed paper labels, and if the shrink label 2 is peeled off from the PET bottle main body 1, Since nothing remains in the bottle main body 1, a process for peeling off the label as in the case of a conventional glass beer bottle is not required at the time of recycling, and recycling is easy.

The front view shown in the partial cross section of the plastic bottle for beer which concerns on this invention Cross section of shrink label Cross section of shrink label Cross section of shrink label The front view which shows the other aspect of the PET bottle for beer which concerns on this invention in a partial cross section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Plastic bottle body 11: Body part 12: Neck part 2: Shrink label 21: Film base material 22: Colored layer 23, 24: Printing layer 25: Perforation 26: Bottom part 3: Cap 4: Shrink packaging

Claims (3)

  A shrink label, which is in close contact with the surface of a transparent plastic bottle containing beer, and has a colored printing layer having a light shielding property on the entire surface of at least one surface of a film substrate.   The shrink label according to claim 1, wherein the colored printing layer is brown, green, blue or black. A plastic bottle for beer, wherein the shrink label according to claim 1 or 2 is adhered to at least the outer surface of the body part of the transparent plastic bottle.

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