JP2017214090A - Plastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic container having a sealing part which is easily torn even by a small child.SOLUTION: A plastic container 1 includes a storage part 3 which stores a content and a mouth part 4 which discharges the content. A tearing type sealing part 8 is provided at the mouth part. The storage part has a flat shape.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a plastic container used for storing ice or the like.

  2. Description of the Related Art A so-called tearable plastic container is known that tears the tip of a container to form an opening at the mouth of the container and discharge the contents.

JP 2003-40232 A

  The container of patent document 1 has a cylindrical accommodating part, and can discharge a content by tearing the sealing part of the front-end | tip part of an opening | mouth part in the state which hold | gripped the accommodating part.

  By the way, when the contents are a favorite item that small children like ice, etc., the main user of the plastic container is a small child, but the conventional tearable plastic container can tear the sealing part. It may not be easy.

  The present invention has been made in view of such circumstances, and provides a plastic container in which even a small child can easily tear a sealing portion.

  According to the present invention, there is provided a plastic container including a storage part for storing contents and a mouth part for discharging the contents, wherein the mouth part is provided with a tearable sealing part, and the storage part Is provided with a plastic container having a flat shape.

  In order for the present inventors to tear the sealing portion, it is indispensable to firmly hold the housing portion. However, since the housing portion has a cylindrical shape, the conventional container has a small child's hand. As a result, it was noticed that the accommodation part was not properly gripped, and as a result, it was difficult to tear the sealing part. Based on this knowledge, the inventors have come up with the idea that the shape of the accommodating portion is a flat shape that can be easily gripped even by a small child, and the present invention has been completed.

Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.
Preferably, the accommodating portion has a constricted portion on a pair of first opposing surfaces opposed to the flat-shaped short axis direction.
Preferably, in the constricted portion, the portion with the largest constriction is located below the center of the total height of the container after tearing the sealing portion.
Preferably, the constricted portion is provided on the entire circumference of the accommodating portion.
Preferably, the accommodating portion has a constricted portion on a pair of second opposing surfaces opposed to each other in the long axis direction of the flat shape, and the sealing portion grips when the sealing portion is torn Provided that the center of the mouth is the central axis, the distance from the central axis of the portion with the largest constriction of the constricted portion on the second facing surface is the portion farthest from the central axis of the gripping portion Is equal to or longer than the distance from the central axis.
Preferably, the constricted part has a length in the height direction of 1/10 to 1/2 of the total height of the container after tearing the sealing part.
Preferably, the mouth portion is provided at substantially the center in the major axis direction of the flat shape.
Preferably, the accommodating portion includes a tapered surface that spreads outward from the bottom portion of the accommodating portion toward the mouth portion, and an upper end position of the tapered surface is a pair of second opposing surfaces in the long axis direction of the flat shape. The opposing surfaces are higher than the pair of first opposing surfaces facing the flat shape in the minor axis direction.

It is a perspective view of the plastic container 1 of 1st Embodiment of this invention. The plastic container 1 is shown, (a) is a front view, (b) is a right side view, (c) is a plan view, and (d) is a bottom view. The same plastic container 1 as FIG. 2 is shown, (a) is a left view, (b) is a rear view. It is an AA end elevation in FIG. It is a BB end view in Drawing 3 (b). (A) is an enlarged view of the area | region X in Fig.2 (a), (b) is CC sectional drawing in (a). (A)-(i) is a front view of the accommodating part 3 which shows the site | part which was excellent in the design in the plastic container 1 of 1st Embodiment with a dotted line, respectively. (A)-(g) is a front view of the holding part 13 which respectively shows the site | part which was excellent in the design in the plastic container 1 of 1st Embodiment with a dotted line. It is a perspective view of the plastic container 1 of 2nd Embodiment of this invention. The plastic container 1 is shown, (a) is a front view, (b) is a right side view, (c) is a plan view, and (d) is a bottom view. The same plastic container 1 as FIG. 10 is shown, (a) is a left view, (b) is a rear view. It is an AA end elevation in FIG. (A)-(i) is a front view of the accommodating part 3 which shows the site | part which was excellent in the design in the plastic container 1 of 2nd Embodiment with a dotted line, respectively. (A)-(g) is a front view of the holding part 13 which respectively shows the site | part which was excellent in the design in the plastic container 1 of 1st Embodiment with a dotted line.

  Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. The invention is established independently for each feature.

1. First Embodiment A first embodiment of the present invention will be described with reference to FIGS. The plastic container 1 according to the present embodiment includes an accommodating portion 3 that accommodates contents and a mouth portion 4 that discharges the contents. The mouth part 4 is provided with a tearable sealing part 8. The accommodating portion 3 has a flat shape. For this reason, the accommodating part 3 is comprised by a pair of 1st opposing surface 6 which opposes the flat-shaped short-axis SA direction, and a pair of 2nd opposing surface 7 which opposes the flat-shaped long-axis LA direction. . The accommodating part 3 is a shape whose cross section is substantially ellipse or an ellipse, for example. The long axis LA is the longest line segment that can be drawn in the accommodating portion 3, and the short axis SA is a line segment that passes through the center of the long axis LA and is perpendicular to the long axis LA. Since the opposing surfaces 6 and 7 are normally connected smoothly, there is usually no clear boundary that separates the opposing surfaces 6 and 7. For example, as shown in FIGS. And an intersection between the line segment T that is in contact with the inscribed circle IC centered at the intersection of the short axis SA and parallel to the short axis SA and the accommodating portion 3 can be defined as a boundary B. In this case, the facing surfaces 6 and 7 are divided by the boundary B. When the circumscribed circle centering on the intersection of the major axis LA and the minor axis SA is a circumscribed circle OC, the ratio of the radius of the circumscribed circle OC to the inscribed circle IC is preferably 1.1 or more, and more preferably 1.3 or more. . The upper limit of this ratio is not particularly specified, but is 3 for example. This ratio is, for example, specifically 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2 .1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, between any two of the numerical values illustrated here It may be within the range.

  When the accommodating portion 3 is cylindrical, if the diameter is increased to ensure a sufficient capacity, it is difficult for a small child to grip, and if the diameter is reduced so that it can be easily gripped by a small child, the capacity decreases. As a result, it was not possible to make it easier for small children to hold while securing the content. On the other hand, since the distance between the pair of facing surfaces 6 is relatively short when the housing portion 3 is made flat, a small child can hold the housing portion 3 firmly by gripping the pair of facing surfaces 6. It becomes possible. Moreover, when the accommodating part 3 is made into a flat shape, since the accommodating part 3 can be lengthened in the long axis LA direction of the flat shape, the capacity of the accommodating part 3 can be increased. Therefore, by making the accommodating portion 3 flat, it is possible to make it easier for a small child to grip while ensuring a sufficient capacity.

  A constricted portion 11 is provided on the entire circumference of the accommodating portion 3. Accordingly, the constricted portion 11 is provided on each of the facing surfaces 6 and 7. The presence of the constricted portion 11 on the facing surface 6 reduces the distance between the pair of facing surfaces 6. Further, when the constricted portion 11 is gripped by a finger, the finger is guided to the portion (constricted deepest portion) 11 a where the constricted portion 11 is most constricted by the inclined surface constituting the constricted portion 11. For this reason, by providing the constricted portion 11 on the facing surface 6, the accommodating portion 3 can be gripped more stably. Moreover, since the constriction part 11 is provided in the perimeter, it is easy to grasp in any part of the perimeter of the container.

  As shown in FIG. 4, the end surface of the accommodating part 3 in the constricted part 11 is substantially polygonal shape (decagonal in this embodiment). In other words, the end surface of the accommodating portion 3 in the constricted portion 11 is constituted by a plurality of (ten in the present embodiment) straight lines. For this reason, when the constricted part 11 is gripped, it is easy to grip without slipping.

  The constricted portion 11 has the constricted deepest portion 11 a below the center M of the overall height H of the container 1 after tearing the sealing portion 8. According to such a configuration, the lower part of the container 1 can be easily crushed, so that the contents can be easily discharged.

  The sealing part 8 is provided with an opening 9 before the contents such as ice are filled in the accommodating part 3, and the contents are filled into the accommodating part 3 through the opening 9. After filling the contents, the sealing portion 8 is sealed by welding or the like, and leakage of the contents is prevented.

  The sealing portion 8 is provided with a gripping portion 13 that grips when the sealing portion 8 is torn. The gripping part 13 may be any shape that can be gripped, may be a ring shape having an opening 13a as in the present embodiment, or may be a tab without an opening. The mouth part 4 is provided with a cutting part 4a, and the contents can be discharged by gripping the holding part 13 and tearing the sealing part 8 at the cutting part 4a. The sealing portion 8 is provided with two annular reinforcing ribs 8 a at positions adjacent to the grip portion 13. If the sealing portion 8 is deformed when the sealing portion 8 is torn, the sealing portion 8 is difficult to tear. However, by providing the sealing portion 8 with a reinforcing rib 8a, deformation of the sealing portion 8 is suppressed and the sealing portion 8 8 is easy to tear.

  As shown in FIG. 6, the grip portion 13 is connected to the mouth portion 4 at a connection portion 13 f. The grip portion 13 is provided with a ring-shaped hollow portion 13b. A portion of the grip portion 13 other than the hollow portion 13b is a welded portion 13c. The connecting portion 13f is provided with a communication hole 13e. The other end of the hollow portion 13b communicates with the internal space of the mouth portion 4 through the communication hole 13e. According to such a configuration, when the plastic container 1 is formed by blow molding, air is distributed to the entire gripping part 13 through the communication hole 13e and the hollow part 13b. The strength of the portion 13 and the connecting portion 13f is improved. On the other hand, when the container 3 is filled with contents such as ice through the mouth part 4, the contents may enter the hollow part 13b through the communication hole 13e, which may be undesirable in appearance. Therefore, one end 13b1 of the hollow portion 13b is sealed with the welded portion 13c so that the air that has entered the hollow portion 13b from the communication hole 13e does not circulate. By doing so, the air in the hollow portion 13b is pushed away and the contents are difficult to enter. Furthermore, the ratio of the length (length in the central axis C direction) OL of the communication hole 13e to the length CL of the connecting portion 13f is preferably 0.6 or less. In this case, since the length of the communication hole 13e is relatively short, the contents are less likely to enter the hollow portion 13b. The lower limit of this ratio is not particularly specified, but is, for example, 0.01. Specifically, this ratio is, for example, 0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6. It may be within a range between any two.

  If the center of the mouth 4 is the central axis C and the part of the gripping part 13 farthest from the central axis C is the farthest part 13g, the distance from the constricted deepest part 11a to the central axis C on the facing surface 7 is the distance. D1 is equal to or longer than the distance D2 from the farthest portion 13g to the central axis C. When the container 1 is formed by blow molding, a split mold that opens and closes in the minor axis direction and a parison having a radius of D2 or more is usually used. When D1 is shorter than D2, the parison is sandwiched by the split molds at the constricted deepest portion 11a at the opposing surface 7, and a parting line is formed at the constricted deepest portion 11a at the opposing surface 7, May become hard. On the other hand, when D1 ≧ D2, it is possible to prevent the parison from being sandwiched between the split molds at the constricted deepest portion 11a on the facing surface 7.

  The length L in the height direction of the constricted part 11 is 1/10 to 1/2 of the total height H of the container after tearing the sealing part 8, and preferably 1/5 to 1/3. If the constricted portion 11 is too narrow, it becomes difficult to grip the constricted portion 11 and the function of the constricted portion 11 is hardly exhibited. On the other hand, if the constricted part 11 is too wide, the slope constituting the constricted part 11 becomes too gentle, and the effect that the finger is guided to the constricted deepest part 11a becomes difficult to be exhibited.

  The mouth portion 4 is provided at a substantially center of the housing portion 3 in the flat major axis LA direction. If the mouth portion 4 is provided at such a position, the housing portion 3 is not easily deformed even when a force in the major axis LA direction is applied to the sealing portion 8 when the sealing portion 8 is torn. Easy to tear.

  The accommodating portion 3 includes a tapered surface 15 that spreads outward from the bottom portion 14 of the accommodating portion 3 toward the mouth portion 4. The upper end position 15 a of the tapered surface 15 is higher in the facing surface 7 than in the facing surface 6. When the remaining amount of the content is reduced by pressing the facing surface 6, the content tends to remain in a corner adjacent to the facing surface 7, but the upper end position 15 a of the tapered surface 15 on the facing surface 7 is set to the facing surface 6. By making it higher than the upper end position 15a of the taper surface 15, the content is easily guided to the center in the direction of the long axis LA, and the residual content is suppressed.

2. Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. Similar to the first embodiment, the plastic container 1 of the present embodiment has a shape in which the constricted portion 11 is provided in the flat accommodating portion 3, and the same effects as the first embodiment are exhibited. The On the other hand, in the present embodiment, the mouth portion 4 is provided at a position shifted from the center of the flat shape in the longitudinal direction, and the grip portion 13 protrudes from the mouth portion 4 to the side toward the center of the flat shape in the longitudinal direction. It is provided as follows. For this reason, compared with 1st Embodiment, it is possible to enlarge the size of the holding part 13. By the way, the opening 13a of the gripping portion 13 is not formed immediately after the plastic container 1 is formed by blow molding, but is formed by subsequent pressing. At this time, a substantially circular punched piece corresponding to the opening 13a is generated. If this punched piece enters the accommodating part 3 through the opening 9 of the mouth part 4 and the contents are filled in this state, the punched piece may be accidentally swallowed when the contents are ingested. Therefore, in the present embodiment, the inner diameter of the opening 13a is made larger than the inner diameter of the opening 9 in order to surely avoid such a problem. According to such a configuration, since the diameter of the punched piece is necessarily larger than the inner diameter of the opening 9, it is possible to reliably prevent the punched piece from entering the accommodating portion 3 through the opening 9 of the mouth portion 4.

DESCRIPTION OF SYMBOLS 1: Plastic container 3: Accommodating part 4: Mouth part 4a: Cutting part 6: 1st opposing surface 7: 2nd opposing surface 8: Sealing part 8a: Reinforcement rib 9: Opening 11: Constriction part 11a: Constriction deepest part 13 : Gripping part 13a: Opening 13b: Hollow part 13c: Welding part 13e: Communication hole 13f: Connection part 13g: Farthest part 14: Bottom part 15: Tapered surface 15a: Upper end position B: Boundary C: Center axis D1: Distance D2: Distance H: Overall height IC: Inscribed circle LA: Long axis M: Center OC: circumscribed circle SA: Short axis T: Line segment X: Area

Claims (8)

A plastic container comprising a container for containing contents and a mouth for discharging the contents,
The mouth part is provided with a tear-type sealing part,
The container is a plastic container having a flat shape.   2. The plastic container according to claim 1, wherein the accommodating portion has a constricted portion on a pair of first opposing surfaces opposed to each other in the minor axis direction of the flat shape.   3. The plastic container according to claim 2, wherein the constricted portion has a portion with the largest constriction located below the center of the total height of the container after tearing the sealing portion.   4. The plastic container according to claim 2, wherein the constricted portion is provided around the entire circumference of the accommodating portion. The accommodating portion has a constricted portion on a pair of second opposing surfaces facing in the major axis direction of the flat shape,
The sealing portion is provided with a gripping portion that grips when the sealing portion is torn,
When the center of the mouth is the central axis,
The distance from the central axis of the portion with the largest constriction of the constricted portion on the second facing surface is equal to or longer than the distance from the central axis of the portion farthest from the central axis of the gripping portion. The plastic container according to any one of claims 1 to 4.   The length of the constricted portion in the height direction is 1/10 to 1/2 of the total height of the container after the sealing portion is torn, 6. Plastic container.   The plastic container according to any one of claims 1 to 6, wherein the mouth portion is provided at a substantially center in the long axis direction of the flat shape.   The accommodating portion includes a tapered surface that spreads outward from the bottom portion of the accommodating portion toward the mouth portion, and the upper end position of the tapered surface is a pair of second opposing surfaces that are opposed in the major axis direction of the flat shape. The plastic container according to any one of claims 1 to 7, wherein the plastic container is higher than a pair of first opposing surfaces opposing the flat shape in a short axis direction.