JP2019167157A - Container made of synthetic resin - Google Patents

Abstract

To provide a container made of synthetic resin which can install a half shrink label without making winkles occur on a drum portion where a constriction portion is provided.SOLUTION: In a container 1 made of synthetic resin having a bottle shape which comprises a mouth portion 2 which serves as a spout for a content, a drum portion 4 which continues to the mouth portion 2 via a shoulder portion 3, and a bottom portion 5 which closes a lower end of the drum portion 4, the container 1 made of synthetic resin has a constriction portion 6 provided in the drum portion 4, a concave-convex 7 which is provided over all surroundings in at least one portion of an outer surface in the constriction portion 6 of the drum portion 4, and a half shrink label 10 which is installed on the outer surface of the drum portion 4, and of which at least one portion is arranged on the concave-convex 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bottle-shaped synthetic resin container including a mouth portion serving as a spout for contents, a trunk portion connected to the mouth portion via a shoulder portion, and a bottom portion closing the lower end of the trunk portion. .

  For example, bottle-shaped synthetic resin containers such as polyethylene terephthalate (PET) bottles (so-called PET bottles) are lightweight and easy to handle, have excellent storage stability of contents, and cost. Since it is inexpensive, it is used for various purposes such as beverages, foods, and cosmetics.

  As such a synthetic resin container, there is known a container in which a shrink label on which information on contents and the like is written is mounted on the outer surface. As the shrink label, the upper end is arranged on the shoulder and the lower end is the bottom (the diameter-reduced portion of the outer surface that reduces the diameter toward the ground contact surface that contacts the placement surface when the container is erected on the placement surface). There is a full shrink label that covers the entire body part and a half shrink label that covers only a part of the body part by being placed on the body part without the bottom end reaching the bottom part. Also, the cylindrically formed one is attached in a state of being in close contact with the outer surface of the synthetic resin container by heat shrinking.

  For example, Patent Document 1 describes a bottle-shaped synthetic resin container in which a half-shrink label (heat-shrink label) is attached to a partial region on the upper side of a body portion.

Japanese Utility Model Publication No. 2-33441

  As a bottle-shaped synthetic resin container as described above, a container provided with a constricted portion on a body portion is known.

  The full-shrink label has an upper end disposed on the shoulder and a lower end disposed on the bottom.When the heat shrinks, the upper end is locked to the shoulder and the downward movement is restricted, and the lower end is disposed on the bottom. Since it is locked to the reduced diameter part and the upward movement is restricted, even if a constricted part is provided on the body part, it is difficult to cause vertical displacement during heat shrinkage, and it is mounted without causing wrinkles. The

  However, since the half-shrink label has a structure in which the lower end is not locked by the bottom portion, when the neck portion is provided with a constricted portion, the portion corresponding to the minimum diameter portion of the constricted portion of the half-shrink label is the minimum diameter. When heat shrinks toward a part, it is pulled by that part and the lower end of the half shrink label is displaced upward, which may cause wrinkles on the half shrink label There was a point.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a synthetic resin container in which a half-shrink label can be attached without causing wrinkles in a body portion provided with a constricted portion. There is.

  The container made of the synthetic resin of the present invention has a bottle-like shape including a mouth part serving as a spout for contents, a trunk part connected to the mouth part via a shoulder part, and a bottom part closing the lower end of the trunk part. A synthetic resin container, a constricted portion provided in the body portion, an unevenness provided over at least a part of the outer surface of the constricted portion of the body portion, and the body portion And a half-shrink label that is mounted on the outer surface and at least a part of which is disposed on the unevenness.

  In the synthetic resin container according to the present invention, in the configuration described above, the unevenness is formed in an enlarged diameter region between the minimum diameter portion of the constricted portion and the maximum diameter portion on the bottom side, and the lower end of the half shrink label is It is preferable to arrange on the unevenness.

  In the synthetic resin container according to the present invention, the upper end of the half shrink label is preferably arranged on the shoulder in the above configuration.

  In the synthetic resin container of the present invention, in the above configuration, it is preferable that the half shrink label covers all the irregularities.

  In the synthetic resin container of the present invention, in the above configuration, it is preferable that at least a portion of the half shrink label covering the unevenness is opaque.

  ADVANTAGE OF THE INVENTION According to this invention, the synthetic resin container which can mount | wear with a half shrink label can be provided, without producing a wrinkle in the trunk | drum provided with the constriction part.

It is a front view of the synthetic resin container which is one embodiment of the present invention. It is a figure which expands and shows an example of the unevenness | corrugation shown in FIG. It is a front view which shows the modification of the synthetic resin containers shown in FIG.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  A synthetic resin container 1 according to an embodiment of the present invention shown in FIG. 1 contains a liquid such as carbonated beverages as contents, and has a cylindrical mouth 2 serving as a spout for the contents, and The substantially dome-shaped shoulder 3 connected to the lower end of the mouth 2, the substantially cylindrical body 4 connected to the mouth 2 via the shoulder 3, and the petaloid-type bottom 5 closing the lower end of the body 4. And formed into a bottle shape.

  Here, in the present specification and claims, “upper” and “lower” mean “when the synthetic resin container 1 is in an upright posture with the mouth portion 2 facing upward as shown in FIG. It means "up" and "down".

  The synthetic resin container 1 is formed into a so-called PET bottle by biaxially stretching blow-molding a polyethylene terephthalate preform.

  The synthetic resin container 1 is not limited to polyethylene terephthalate, but may be formed by biaxial stretch blow molding of a preform made of another synthetic resin material having thermoplasticity such as expanded polypropylene (OPP). You can also. In addition, the manufacturing method of the synthetic resin container 1 is not limited to the biaxial stretch blow molding method of the preform, but also adopts various manufacturing methods such as injection molding or extrusion blow molding of a resin material. Can do.

  A male screw 2a is formed on the outer peripheral surface of the mouth portion 2. After the contents are filled into the synthetic resin container 1 through the mouth portion 2, a cap (not shown) is screwed to the mouth portion 2a. The part 2 can be closed. In addition, it can replace with the external thread 2a in the outer peripheral surface of the opening part 2, and can also set it as the structure which obstruct | occludes the opening part 2 by providing the protrusion for undercut fitting, and plugging the cap into the opening part 2.

  The body portion 4 is provided with a constricted portion 6. The constricted portion 6 is a portion in which the outer diameter of the body portion 4 is narrowed and narrowed, and a reduced diameter region 6a that gradually decreases in diameter downward from the upper end of the body portion 4 (connection portion with the shoulder portion 3); It has a minimum diameter portion 6b that makes the outer diameter of the portion 4 the smallest and a diameter expansion region 6c that gradually expands downward from the minimum diameter portion 6b. The vertical length of the reduced diameter region 6 a is longer than the vertical length of the expanded region 6 c, and the minimum diameter portion 6 b is biased toward the bottom 5 with respect to the vertical center position of the body portion 4. In position. In addition, the lower end of the enlarged diameter region 6 c is a maximum diameter portion 6 d on the bottom 5 side of the constricted portion 6.

  By providing the neck portion 4 with the constricted portion 6 having the above shape, the synthetic resin container 1 has a shape that can be easily gripped by hand.

  Concavities and convexities 7 are provided on at least a part of the outer surface of the constricted portion 6 of the body portion 4 over the entire circumference. In the present embodiment, in addition to the entire enlarged diameter region 6c between the minimum diameter portion 6b of the constricted portion 6 and the maximum diameter portion 6d on the bottom portion 5 side of the body portion 4, the outer surface of the body portion 4 is provided. Concavities and convexities 7 are provided in a predetermined region above the minimum diameter portion 6b and a predetermined region below the maximum diameter portion 6d. In FIG. 1, the region where the unevenness 7 is provided is indicated by cross hatching.

  The unevenness 7 has a shape in which the convex portion 7b has a lower surface portion that extends in the circumferential direction while facing downward. As shown in FIG. 2, in the present embodiment, the shape of the unevenness 7 is a shape in which concave portions 7 a and convex portions 7 b formed in a waveform extending downward from above are alternately arranged in the circumferential direction. It has become. In this case, the lower surface portion facing downward of the convex portion 7b extends in the circumferential direction while being inclined at a predetermined angle with respect to the circumferential direction.

  A half shrink label 10 is attached to the outer surfaces of the shoulder 3 and the body 4 of the synthetic resin container 1. The half-shrink label 10 is formed of a heat-shrinkable film such as polystyrene (PS) or polyethylene terephthalate (PET) in a cylindrical shape having a diameter larger than that of the body 4, and is placed outside the shoulder 3 and the body 4. By being heated and shrunk with hot air or the like in the covered state, it is attached in close contact with the outer surfaces of the shoulder 3 and the trunk 4.

  The upper end 10 a of the half shrink label 10 is arranged at a position adjacent to the mouth 2 of the shoulder 3. Thereby, the half shrink label 10 covers most of the outer surface of the shoulder 3.

  On the other hand, the lower end 10 b of the half-shrink label 10 is disposed in the enlarged diameter region 6 c of the constricted portion 6 of the trunk portion 4. Thereby, the half shrink label 10 covers most of the upper side of the outer surface of the trunk portion 4.

  The lower end 10 b of the half shrink label 10 is located on the unevenness 7 provided in the enlarged diameter region 6 c by being arranged in the enlarged diameter region 6 c of the constricted portion 6 of the trunk portion 4. That is, a part of the half shrink label 10 on the lower end 10 b side is disposed on the unevenness 7. A part on the lower end 10b side of the half-shrink label 10 disposed on the unevenness 7 is in close contact with the unevenness 7 due to the thermal contraction, and is locked by the unevenness 7 so that the vertical movement on the outer surface of the body portion 4 can be performed. It is regulated.

  The protrusion height of the protrusion 7b toward the outer side in the radial direction with respect to the recess 7a of the unevenness 7 can lock the half-shrink label 10 in close contact with the unevenness 7 and restrict its movement in the vertical direction. It is preferable that the height of the surface of the shrink label 10 is set such that the shape of the unevenness 7 is traced and the appearance is not impaired.

  Thus, in the synthetic resin container 1 of the present embodiment, the diameter-enlarged region 6c between the minimum diameter portion 6b of the constricted portion 6 and the maximum diameter portion 6d on the bottom portion 5 on the outer surface of the trunk portion 4. In addition, the unevenness 7 is provided over the entire circumference, and a part of the half shrink label 10 mounted on the outer surface of the body 4 is disposed on the unevenness 7, so that the half shrink label 10 is disposed on the body. When the heat shrinkage is performed for mounting on 4, a part of the half-shrink label 10 disposed on the unevenness 7 is brought into close contact with the unevenness 7 by the heat shrinkage, and is locked upward by the unevenness 7. After the state is restricted, the portion corresponding to the minimum diameter portion 6b of the constricted portion 6 of the half shrink label 10 can be heat-shrinked toward the minimum diameter portion 6b. Therefore, in a state in which the positional deviation toward the upper side of the lower end 10b of the half shrink label 10 is regulated by the unevenness 7, the portion corresponding to the minimum diameter portion 6b of the constricted portion 6 of the half shrink label 10 is directed to the minimum diameter portion 6b. Therefore, it is possible to prevent the lower end 10b of the half-shrink label 10 from being displaced upward, and to cause half-shrink without causing wrinkles in the body portion 4 provided with the constricted portion 6. A label 10 can be attached.

  In particular, when the lower end 10b of the half shrink label 10 is arranged on the unevenness 7 like the synthetic resin container 1 of the present embodiment, the half shrink label 10 is directed upward above the lower end 10b. Since the movement can be directly regulated by the unevenness 7, it is possible to more reliably prevent the lower end 10b of the half shrink label 10 from being displaced upward.

  Furthermore, in the synthetic resin container 1 of the present embodiment, the unevenness 7 is added to the expanded diameter region 6c between the minimum diameter portion 6b of the constricted portion 6 and the maximum diameter portion 6d on the bottom portion 5 side, and the expansion is performed. Since the half-shrink label 10 is also provided on the upper side of the diameter region 6c, when the half-shrink label 10 is thermally contracted to be attached to the body portion 4, the half-shrink label is also provided above the minimum diameter portion 6b of the constricted portion 6. It is possible to more reliably prevent the lower end 10b of the half-shrink label 10 from being displaced upward as 10 is locked by the unevenness 7.

  Furthermore, since the occurrence of wrinkles can be prevented in addition to the positional displacement directed upward of the lower end 10b of the half shrink label 10, the appearance of the synthetic resin container 1 to which the half shrink label 10 is attached can be enhanced. .

  Furthermore, in the synthetic resin container 1 of the present embodiment, since the upper end 10a of the half shrink label 10 is arranged on the shoulder portion 3, when the half shrink label 10 is thermally contracted in order to be attached to the body portion 4, In addition, after the upper end 10a of the half shrink label 10 is brought into close contact with the shoulder portion 3 and is locked by the shoulder portion 3 so that the downward movement is restricted, the constricted portion 6 of the half shrink label 10 is A portion corresponding to the minimum diameter portion 6b can be heat shrunk toward the minimum diameter portion 6b. Therefore, in a state where the position shift toward the lower side of the upper end 10a of the half shrink label 10 is regulated by the shoulder portion 3, a portion corresponding to the minimum diameter portion 6b of the constricted portion 6 of the half shrink label 10 is changed to the minimum diameter portion 6b. Therefore, it is possible to prevent the upper end 10a of the half shrink label 10 from being displaced downward. Thereby, the beauty | look of the synthetic resin container 1 with which the half shrink label 10 was mounted | worn can be improved further.

  FIG. 3 is a front view showing a modification of the synthetic resin container 1 shown in FIG. In FIG. 3, members corresponding to those described above are denoted by the same reference numerals.

  As shown in FIG. 3, the synthetic resin container 1 is configured such that the unevenness 7 is provided only in the diameter-enlarged region 6 c between the minimum diameter portion 6 b of the constricted portion 6 and the maximum diameter portion 6 d on the bottom portion 5 side. It can also be. In this case, it is good also as a structure in which the unevenness | corrugation 7 was provided only in a part of enlarged diameter area | region 6c. Even in such a configuration, as in the case shown in FIG. 1, the minimum diameter of the constricted portion 6 of the half shrink label 10 in a state where the positional deviation toward the upper side of the lower end 10 b of the half shrink label 10 is regulated by the unevenness 7. Since the portion corresponding to the portion 6b can be thermally contracted toward the minimum diameter portion 6b, the constricted portion 6 is provided by preventing the lower end 10b of the half shrink label 10 from being displaced upward. The half-shrink label 10 can be mounted without causing wrinkles on the body 4 that is formed.

  Further, as shown in FIG. 3, the lower end 10b of the half shrink label 10 is disposed below the maximum diameter portion 6d of the constricted portion 6 and above the bottom portion 5, and all the unevennesses 7 are formed into the half shrink label. 10 may be used. With such a configuration, it is difficult to visually recognize the unevenness 7 from the outside, and the aesthetic appearance of the synthetic resin container 1 can be further enhanced.

  Further, the half-shrink label 10 may be configured such that at least a portion covering the unevenness 7 is opaque. In this case, as long as at least the portion covering the unevenness 7 of the half shrink label 10 is opaque, the portion other than the portion covering the unevenness 7 may be transparent or opaque. The opaque portion of the half-shrink label 10 may be made opaque by forming the half-shrink label 10 itself with a colored material, or the half-shrink label 10 made of a transparent material is colored or the like. It may be configured to be opaque.

  As shown in FIG. 3, in the case where all the unevenness 7 is covered with the half shrink label 10, the unevenness 7 cannot be visually recognized from the outside by making the portion covering the unevenness 7 of the half shrink label 10 opaque. Thus, the beauty of the synthetic resin container 1 can be further enhanced.

  In addition, as shown in FIG. 1, even when it is set as the structure which covered only the one part unevenness | corrugation 7 with the half shrink label 10, the part which covers the unevenness 7 of the half shrink label 10 can be made opaque. Even in this case, the ruggedness 7 in the portion covered with the half shrink label 10 cannot be visually recognized from the outside, and the aesthetic appearance of the synthetic resin container 1 can be further enhanced.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, the synthetic resin container 1 may have a configuration in which the unevenness 7 is provided in the reduced diameter region 6 a between the minimum diameter portion 6 b of the constricted portion 6 and the maximum diameter portion on the mouth portion 2 side. In this case, the unevenness 7 may be provided only in the reduced diameter region 6a, or may be provided in both the reduced diameter region 6a and the enlarged diameter region 6c. Thus, when the unevenness | corrugation 7 is provided in the reduced diameter area | region 6a, you may make it arrange | position the upper end of the half shrink label 10 in the reduced diameter area | region 6a.

  For example, the unevenness 7 is not limited to the shape shown in FIG. 2, and the convex portion 7 b has a lower surface portion that faces downward and extends in the circumferential direction. If it is provided, it can be made into various shapes.

  Also in the synthetic resin container 1 of the embodiment shown in FIG. 1, the lower end 10 b of the half shrink label 10 is arranged at a position that coincides with the lower end of the unevenness 7, and all the unevenness 7 is covered with the half shrink label 10. You may do it. Even in this case, the portion covering the unevenness 7 of the half shrink label 10 can be made opaque, thereby making the unevenness 7 invisible from the outside and further enhancing the appearance of the synthetic resin container 1. .

  Further, the upper end 10 a of the half shrink label 10 is preferably disposed on the shoulder 3, but may be disposed on the trunk 4.

  Furthermore, the contents filled in the synthetic resin container 1 are not limited to carbonated drinks, and may be other drinks such as tea, food, cosmetics, and the like. In these cases, the bottom portion 5 of the synthetic resin container 1 may have a shape other than the petaloid type.

  Furthermore, the synthetic resin container 1 is not limited to one in which the body 4 is formed in a substantially cylindrical shape, and the body 4 may be formed in a substantially rectangular tube.

DESCRIPTION OF SYMBOLS 1 Synthetic resin container 2 Mouth part 2a Male screw 3 Shoulder part 4 Body part 5 Bottom part 6 Constriction part 6a Reduced diameter area 6b Minimum diameter part 6c Expanded area 6d Maximum diameter part 7 Concavity and convexity 7a Concave part 7b Convex part 10 Half shrink label 10a Upper end 10b Bottom

Claims (5)

A bottle-shaped synthetic resin container comprising a mouth portion serving as a spout for contents, a trunk portion connected to the mouth portion via a shoulder portion, and a bottom portion closing the lower end of the trunk portion,
A constricted portion provided in the body portion;
Concavities and convexities provided over the entire circumference on at least a part of the outer surface of the constricted portion of the trunk portion,
A synthetic resin container, comprising: a half-shrink label that is mounted on an outer surface of the body portion and at least a part of the half-shrink label is disposed on the unevenness.   The unevenness is formed in an enlarged diameter region between a minimum diameter portion of the constricted portion and a maximum diameter portion on the bottom side, and the lower end of the half shrink label is disposed on the unevenness. The synthetic resin container described in 1.   The synthetic resin container according to claim 2, wherein an upper end of the half shrink label is disposed on the shoulder.   The synthetic resin container according to any one of claims 1 to 3, wherein the half shrink label covers all the irregularities.   The synthetic resin container according to any one of claims 1 to 4, wherein a portion covering at least the unevenness of the half shrink label is opaque.

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