JP2008285194A - Synthetic resin container with shrink film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily remove a shrink film attached to a synthetic resin container such as a PET bottle or the like from a body having the film attached. <P>SOLUTION: The synthetic resin container includes a tubular film formed of the shrink film 2, wherein the shrink film 2 is wound inward from a seat 4 on a lower surface of the PET bottle 1 or the like when the tubular film having at least one line of perforations in a vertical direction of the container is to be fitted on the container such as the PET bottle 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a synthetic resin container provided with a shrink film that is coated on a part of a glass bottle, a plastic bottle or the like by utilizing heat shrinkage, and in particular, a synthetic resin provided with a shrink film that can be easily removed from a bottle. It relates to the container.

  In recent years, so-called PET bottles in which a preform made of polyethylene terephthalate is formed by blow molding are often used for synthetic resin containers for liquid beverages and the like. In general, a cylindrical film printed with a product name, a manufacturer name, a design that increases purchase will, and the like is attached to the body of the PET bottle. As this film, a stretched film having heat shrinkability is often used. As shown in FIG. 6, the shrink film is formed in a cylindrical shape having a larger diameter than the body of the PET bottle (1). The tubular shrink film (2) is preprinted with a product name or the like. On the other hand, the PET bottle (1) to be mounted has the PET bottle fixing jig (6) set in the recess (3) on the bottom surface of the PET bottle (1). The shrink film (2) is placed on the body of the PET bottle (1) in such a state, and hot air or high-temperature steam is blown from the side surface to shrink and attach.

  By the way, it is required by law to recycle products because of environmental protection problems, and it is necessary to separate and collect each material. The material of the shrink film attached to the PET bottle is not polyethylene terephthalate but vinyl chloride or polypropylene. Therefore, in order to recycle, both need to be separated.

  Conventionally, as shown in FIG. 5, it is mounted with the lower end of the shrink film (2) positioned slightly above the bottom surface having the recess (3) inside the seat (4) of the PET bottle (1). The Accordingly, the shrink film (2) is in close contact with the PET bottle (1), and there is no gap between the PET bottle (1) and the shrink film (2), which makes it easy to make a trigger for making a cut, and the shrink film (2) It becomes difficult to peel off.

  Therefore, as a method of peeling the shrink film (2), it is mentioned that the perforation (5) is continuously provided in the longitudinal direction in the central portion of the shrink film (2). When making a trigger from the end, the shrink film (2) is in close contact with the curved surface of the PET bottle (1) and the like due to heat shrinkage, and it is difficult to make a trigger easily.

  Further, a patent has been filed for the purpose of improving the tearability by changing the shape of the perforation and the arrangement.

  Furthermore, a patent has been filed in which a convex portion can be easily pinched by intentionally providing a protruding portion between the perforations at the end of the shrink film. (For example, refer to Patent Document 1).

  However, if a convex portion is provided between the perforations at the end of the shrink film, the convex portion rises at the same time as the thermal film shrinks when the shrink film is attached, which may deteriorate the design. Further, there is a problem that the shrink film is torn by hooking the raised convex portion.

Prior art documents are shown below.
Japanese Utility Model Publication No. 5-16634

  The present invention is intended to solve such problems of the prior art, and is an improvement in the removal of a shrink film attached to a synthetic resin container such as a PET bottle. It aims at providing the synthetic resin container provided with the shrink film which can remove a film easily.

  The present invention has been made to solve the above problems, and the invention according to claim 1 of the present invention is a tubular film formed of a shrink film (2) and has a perforation (5 ) At least one row, when the cylindrical film attached in the vertical direction of the synthetic resin container is fitted to the synthetic resin container such as the PET bottle (1), the seat portion (4) on the lower surface of the PET bottle (1) or the like It is a synthetic resin container provided with the shrink film, wherein the shrink film (2) is wound to the inner side.

  The invention according to claim 2 of the present invention is the synthetic resin container provided with the shrink film according to claim 1, wherein the shrink film (2) is 0 to 5 mm from the seat (4) on the lower surface of the PET bottle (1). It is the synthetic resin container provided with the shrink film characterized by being wound in the inside range.

  The synthetic resin container provided with the shrink film according to the present invention is a cylindrical film formed of a shrink film, and the cylindrical film with at least one row of perforations and attached in the vertical direction of the synthetic resin container is a PET bottle. When the plastic film is fitted to a synthetic resin container such as a PET bottle, the shrink film is wound to the inner side of the seat part on the lower surface of the PET bottle, etc., so that a gap is formed between the seat part on the lower surface of the PET bottle and the shrink film. Since it is possible, it is possible to easily put a finger on the perforation.

  In addition, the shrink film is wound to the inside of 0-5mm from the seat on the lower surface of the PET bottle, so that advertisements, advertisements, designs, etc. printed on the shrink film can be worn without wrinkles. In addition, it becomes possible to make a cut in the perforation without impairing the stability when a PET bottle or the like is placed.

  In addition, it is possible to add advertisements, advertisements, and designs to the lower surface of PET bottles, etc. that could not be made until now, and to block light of a specific wavelength incident from the lower surface of PET bottles, etc. It becomes possible to suppress deterioration of things.

  Embodiments of the present invention will be described in detail with reference to FIGS.

  FIG. 1A is a front view showing an embodiment of a synthetic resin container provided with a shrink film according to the present invention, FIG. 1B is a bottom view of the container as viewed from the bottom side, and FIG. It is a front view which shows one Example when the shrink film of invention is set to PET bottle, FIG. 3 is the lower surface which shows one Example which posted the advertisement on the lower surface of the synthetic resin container provided with the shrink film which concerns on this invention FIG. 4 is a front view showing one embodiment in a state where the shrink film is peeled off from the synthetic resin container provided with the shrink film according to the present invention.

The synthetic resin container provided with the shrink film of one embodiment of the present invention is a cylindrical film formed of the shrink film (2) as shown in FIG. 1 (a), and the perforation (5) is at least. When the cylindrical film attached in the vertical direction of one row of the synthetic resin container is fitted to the synthetic resin container such as the PET bottle (1), the inner side of the seat part (4) on the lower surface of the PET bottle (1) or the like It is a synthetic resin container provided with the shrink film, wherein the shrink film (2) is wound up to the recess (3).

  This PET bottle (1) is a thing that is mounted by fitting a tubular film in which a shrink film (2) is formed into a tubular shape to the body of the PET bottle (1) and then shrinking it by heating. The film is printed with a product name, a manufacturer name, and a design that increases the willingness to purchase.

  The shrink film (2) has two rows of perforations (5) parallel to the longitudinal direction in a state of being fitted to a synthetic resin container, and the width of the perforations (5) is preferably about 20 mm.

  As shown in FIG. 4, when covering the PET bottle (1) with the shrink film (2), the PET bottle fixing jig (6) for positioning the PET bottle (1) is changed from the conventional height, By holding the bottle (1) at a higher position, the shrink film (2) is covered so as to cover a certain length below the lower end of the PET bottle (1), and hot air or high temperature steam is blown from the side to shrink the film. Shrink (2). At this time, the position from the lower end of the PET bottle (1) to the lower end of the shrink film (2) is set so that the shrink film (2) is wound 5 mm inside the sitting part (4) of the PET bottle (1).

  As shown in FIG. 4, the shrink film (2) thus contracted has a gap (8) between the seat (4) at the lower end of the PET bottle (1) and the shrink film (2). Therefore, the end of the shrink film (2) can be easily hung with the finger (7), and the shrink film (2) can be easily removed by making a cut at a place with the perforation (5). Become.

  Furthermore, as shown in FIG. 1B, it is possible to place an advertisement or the like on the lower surface of the synthetic resin container provided with the shrink film by printing or the like as shown in FIG.

  In addition, the synthetic resin container provided with the shrink film concerning this invention can be manufactured by a normal blow molding method. Moreover, as a synthetic resin used for such a synthetic resin container, for example, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), a high density polyethylene resin (HDPE), a linear low density polyethylene resin (L -LDPE) and the like, polypropylene resins such as polypropylene resin (PP), polystyrene resins, polycarbonate resins, polyamide resins, polyester resins, and other thermoplastic molding resins can be used. Of these, polyester resins are preferable in view of transparency, strength, cost, moldability, and the like, and polyethylene terephthalate resin (PET) is more preferable.

  The synthetic resin may contain an appropriate amount of additives such as an antioxidant, a thermal degradation inhibitor, an ultraviolet degradation inhibitor, an antistatic agent, and other resins as required.

  Next, the shrink film is not particularly limited, and stretched films such as vinyl chloride, polypropylene, polyethylene, polystyrene, polyamide, and polyester resins can be used. Among these, a polystyrene film is preferable.

  Hereinafter, the synthetic resin container provided with the shrink film according to the present invention will be described in more detail with specific examples, but is not limited thereto.

<Example 1>
Polyethylene terephthalate resin (PET) was used as the thermoplastic resin for molding the synthetic resin container provided with the shrink film according to the present invention, and a PET bottle was molded by a blow molding method. In addition, a colorful pattern was printed on the shrink film by a gravure printing method using a polystyrene film having a thickness of 50 μm.

  Next, as shown in FIG. 2, the PET bottle (1) is set on a PET bottle fixing jig (6), and the tubular film in which the shrink film (2) is formed into a tubular shape is formed into the PET bottle (1 ) It was covered so as to cover a predetermined length below the lower end. At this time, the position from the lower end of the PET bottle (1) to the lower end of the shrink film (2) was set so that the shrink film (2) was wound 5 mm inside the sitting part (4) of the PET bottle (1).

  Subsequently, hot air was blown from the side surface to shrink the shrink film (2) to obtain a PET bottle (1) equipped with the shrink film (2) as shown in FIG. 1 (a).

  The PET bottle (1) provided with the shrink film (2) thus obtained was used to evaluate whether it can be easily peeled from the PET bottle (1) of the shrink film (2). 4, since there is a gap (8) between the seat (4) at the lower end of the PET bottle (1) and the shrink film (2), the end of the shrink film (2) can be easily Can be hung with a finger (7), and the shrink film (2) can be easily removed by making a cut at a place with a perforation (5).

(A) is a front view which shows one Example of the synthetic resin container provided with the shrink film which concerns on this invention, (b) is the bottom view which looked at this container from the bottom face side. It is a front view which shows one Example when the shrink film of this invention is set to PET bottle. It is a bottom view which shows one Example which published the advertisement on the lower surface of the synthetic resin container provided with the shrink film which concerns on this invention. It is a front view which shows one Example of the state which peels a shrink film from the synthetic resin container provided with the shrink film which concerns on this invention. It is a front view which shows one Example at the time of producing with the conventional method. It is a front view when a shrink film is set to a PET bottle by the conventional method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... PET bottle 2 ... Shrink film 3 ... Depression part 4 ... Sitting part 5 ... Perforation 6 ... PET bottle fixing jig 7 ... Finger 8 ... Gap

Claims (2)

  When a cylindrical film formed of a shrink film and having a perforated line in at least one row and attached in the vertical direction of a synthetic resin container is fitted to a synthetic resin container such as a PET bottle, the PET bottle or the like A synthetic resin container provided with a shrink film, wherein the shrink film is wound to the inside of a seat portion on the lower surface of the container.   2. The synthetic resin container provided with the shrink film according to claim 1, wherein the shrink film is wound to a range of 0 to 5 mm inside from a seat part on the lower surface of the PET bottle.

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