JP4291604B2 - Synthetic resin bottle type container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin bottle-type container such as a plastic bottle formed by biaxial stretch blow molding, etc. Therefore, it is intended to reliably restore the deformation that occurs during the handling of dispensing the contents.
[0002]
[Prior art]
Synthetic resin containers such as PET bottles can be produced in large quantities by a relatively simple method by applying the biaxial stretch blow molding method, and are handled more easily than glass containers. Since it is easy and advantageous to reduce the cost, it is frequently used as a container for filling beverages and the like.
[0003]
Such a container has a vertical rib for improving rigidity so as to keep a predetermined shape while suppressing the amount of resin used in the container as much as possible and not easily buckle due to an external load. As a prior art related to this point, a flat wall having a wide width having a vacuum absorbing panel wall is formed on the barrel portion having a bottomed cylindrical shape, A peripheral groove is provided so as to be connected to the edge of the flat wall, and a portion extending from the center of the edge of the flat wall to the groove bottom wall of the opposite peripheral groove is composed of a tapered wall and a bottom wall extending outward. A synthetic resin casing is known in which a recess is provided and a laterally protruding rib strip is provided at the center of the bottom wall of the recess including the groove bottom wall (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Utility Model Registration No. 2585264 Publication
By the way, in recent years, large containers having a filling capacity of more than 2 liters have been seen, and further improvements in strength have been attempted. When a large external force exceeding the strength of the part is applied, or when the contents are poured out while holding the finger against the body part of the container and the contents are poured out, crushing deformation may occur was there.
[0006]
If the force applied to the body part of the container is small, the deformation of the body part that occurs at that time can be easily restored, but if a large force is applied, it will be further strengthened by vertical ribs, horizontal ribs, waists, etc. Therefore, it is difficult to restore it naturally, and even if it is restored, a broken line remains in the part and there is a problem that the appearance is not good.
[0007]
[Problems to be solved by the invention]
The subject of this invention exists in the place which proposes the novel synthetic resin bottle type container which can eliminate the above conventional problems.
[0008]
[Means for Solving the Problems]
The present invention is a synthetic resin bottle-shaped container having a waist that divides the body part into at least two parts at the top and bottom, and provided with a partitioning recess for handling on the waist,
Between the lower edge of the compartment recess and the fuselage portion, it extends along the lower edge, and the stepped portion is stepped from the bottom wall of the compartment recess toward the outer surface of the fuselage portion. It is a synthetic resin bottle-type container characterized in that a step portion is provided to provide flexibility at the site .
[0009]
Moreover, this invention can also arrange | position the concave rib along the edge of a division | segmentation recessed part adjacent to a level | step-difference part.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described more specifically with reference to the drawings.
[0011]
1 to 4 show an embodiment of a heat-resistant bottle type container made of polyethylene terephthalate having a capacity of 2.0 liters and having a substantially rectangular cross section according to the present invention, which can be formed by biaxial stretch blow molding. Is a front view, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. 4 is a bottom view.
[0012]
In the figure, reference numeral 1 denotes a body portion of the container. The body portion 1 includes a pair of long side walls 1a, a pair of short side walls 1b, and a corner wall 1c connecting the long side walls 1a and the short side walls 1b.
[0013]
Further, 2 is a shoulder provided at the upper end of the body part, 3 is a mouth part connected to the shoulder part 2, 4 is a heel part provided at the lower end of the body part 1, and 5 is a bottom wall connected to the heel part 5. , 6 are decompression absorption walls provided on the long side wall 1a and the short side wall 1b, respectively, 7 is a lateral rib disposed on the long side wall 1a and the short side wall 1b so as to cross the decompression absorption wall 6, respectively. Is a waist in which the body portion 1 is divided into two parts at the top and bottom to ensure rigidity, and 9 is an oval partition recess provided in the waist 8 on the long side wall 1a side. The partition recess 9 has a function of securing the rigidity of the container, and is a place to which a fingertip is applied when handling the body portion 1 to pour out the contents.
[0014]
Furthermore, 10 in the figure is a stepped portion provided between the lower edge of the partition recess 9 and the body portion 1, and this stepped portion 10 has a cross-section of its main part as shown in FIG. A plurality of stepped portions 10 a are connected in a staircase pattern from the bottom wall 9 a of the partition recess 9 to the outer surface of the body portion 1. Reference numeral 11 denotes a concave rib disposed adjacent to the stepped portion 10 and extending in the same direction as the waist 8 with a width wider than that of the vacuum absorbing wall 6.
[0015]
When the body part 1 is gripped by applying a fingertip to the compartment recess 9, the long side wall 1a is deformed from both sides toward the inside of the container, and a force exceeding the strength inherent in the body part 1 is applied. It is difficult to restore the original state naturally due to local crushing deformation, but it is easy to crush and deform by providing the stepped portion 10 so that “flexibility” is imparted to such a part. In this case, the original state is quickly restored by removing the force for gripping the body portion 1.
[0016]
Such “bendability” is concerned with a slight decrease in strength in terms of securing high rigidity for the body portion 1, and therefore the concave rib 11 is provided to compensate for the strength at that portion.
[0017]
The step portion 10a constituting the step portion 10 can be rounded along the edge of the partition recess 9 as shown in the figure, but even if it extends linearly in the width direction of the long side wall 1a. Well, this is not a limitation.
[0018]
Further, the stepped portion 10 can be provided not only at the lower edge of the partition recess 9 but also at one or a plurality of locations on the upper edge or side as required.
[0019]
Furthermore, the shape of the container to which the present invention corresponds is not limited to the shape of a substantially rectangular cross section shown in FIGS. 1 to 4, and may be a substantially square as long as a handling compartment recess is provided on the waist. It is also possible to apply a container having a polygonal cross section, and the filling capacity of the contents is 2.0 liters, a large capacity exceeding 2.0 liters, 350 ml, 500 Appropriately selected and applied to a volume of less than 2.0 liters such as milliliter.
[0020]
【The invention's effect】
According to the present invention, it is possible to quickly restore the deformation of the container body portion that occurred during handling while maintaining the strength inherent to the container, and the outer shape of the container can be stably maintained until the contents are used up. Can hold.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a container according to the present invention.
FIG. 2 is a side view of FIG.
3 is a plan view of FIG. 1. FIG.
4 is a bottom view of FIG. 1. FIG.
5 is a view showing a cross-section of the main part of FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body part 1a Long side wall 1b Short side wall 1c Corner part wall 2 Shoulder part 3 Mouth part 4 Heel part 5 Bottom wall 6 Decompression absorption wall 7 Horizontal rib 8 Waist 9 Compartment recess 10 Step part 11 Concave rib

Claims (2)

It has a waist that divides the body part into at least two parts at the top and bottom, and is a synthetic resin bottle-shaped container provided with a partitioning recess for handling on the waist,
Between the lower edge of the compartment recess and the fuselage portion, it extends along the lower edge, and the stepped portion is stepped from the bottom wall of the compartment recess toward the outer surface of the fuselage portion. A synthetic resin bottle-type container characterized in that a step portion is provided to provide flexibility at the site . The synthetic resin bottle-type container according to claim 1, wherein a concave rib extending parallel to the edge of the partitioning recess is disposed adjacent to the stepped portion.

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