JP4454391B2 - Plastic container - Google Patents

Description

  The present invention relates to a synthetic resin container having a vacuum absorbing wall suitable for filling a high-temperature content. The vacuum absorbing capacity of the container is impaired, and the mounting position of a label is limited. It tries to maintain a high state without doing anything.

  Synthetic resin containers such as plastic bottles are lightweight and easy to handle, and they can ensure transparency and have an inferior appearance compared to glassy containers, and are inexpensive. In recent years, it has been widely used as a container for filling foods, beverages, cosmetics, medicines, and the like.

  In particular, for heat-resistant containers suitable for filling high-temperature contents, a plurality of reduced-pressure absorption panels are arranged in the body, and shape deformation (deformation of external appearance) due to reduced pressure inside the container This is prevented by absorbing the displacement of the panel (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 3-15449

  By the way, although the container of a type having a reduced pressure absorption panel can increase the reduced pressure absorption capacity by increasing the area of the panel, the area of other parts other than that becomes smaller when the area is expanded. When labels are wrapped around areas other than the panel surface (containers such as food), there is a problem that the size and mounting position of the labels are limited, and the shrink labels that involve heat shrinkage are surrounded by the vacuum absorbing panel. When mounting on a container, the larger the area of the vacuum absorption panel, the thinner the part may appear and the appearance of the product may be impaired, so there is a limit to maintaining a high vacuum absorption capacity in this type of container. It was.

  An object of the present invention is to propose a novel synthetic resin container capable of ensuring a sufficient and sufficient reduced pressure absorption capacity without causing the above-mentioned disadvantages that have occurred in the past.

The present invention is a synthetic resin container provided with a compartment recess around the body and using it as a vacuum absorbing panel,
The vacuum absorbing panel includes a plurality of vertical walls that extend from the mouth to the bottom of the container and are arranged at intervals around the trunk, and at least one horizontal wall that connects adjacent vertical walls to each other. It is preferable that the horizontal groove is connected to either the upper end or the lower end of the vertical wall.

  Further, in the container, it is desirable that the horizontal wall is divided into an endless corrugated shape as a whole by alternately connecting every other upper end and lower end of the vertical wall.

  Furthermore, the said horizontal wall can also connect the upper ends or the lower ends of a vertical wall, respectively, and can divide | segment into a U shape or an inverted U shape.

  Since the vertical recesses are formed by connecting the vertical walls with the horizontal walls, not only the vertical walls but also the horizontal walls contribute to the reduced pressure absorption, so that the reduced pressure absorption capability is enhanced.

  In addition, since the arrangement interval and length of the vertical walls can be set relatively freely, the label mounting area does not narrow, and there are columns (or ribs) between the vertical walls, so a shrink label is placed around them. Even if it is worn, it will not appear to be thin.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an embodiment of a synthetic resin container (bottle type) according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an AA cross-sectional view.

  The container exemplified in the embodiment of the present invention divides the body of the container vertically into two with the waist 1 as a boundary, and four lateral grooves 2 are provided on the upper body to increase the strength in the radial direction of the container. The decompression absorption panel 3 which consists of a division recess is provided in the part, and the decompression absorption panel 3 extends from the mouth part of the container toward the bottom part and is arranged at intervals around the trunk part. Vertical walls 3a to 3h and horizontal walls 3i to 3p that alternately connect every other upper and lower ends of the vertical walls 3a to 3h.

  The decompression absorption panel 3 has an endless corrugated shape in which the vertical walls 3a to 3h and the lateral walls 3i to 3p are all connected, and the partition recesses are displaced as a whole to absorb the shape deformation accompanying the decompression of the container.

  The amount of reduced pressure absorption can be secured by adjusting the width and length of the vertical walls 3a to 3h or the width and length of the horizontal walls 3i to 3p. Compared with conventional containers (increases the amount of vacuum absorption), there is less influence on the outer shape of the container, and there are ribs between the vertical walls, so even if a label is attached to that part It does not appear.

  Moreover, since the area | region except a panel surface can be enlarged by shortening the length of the vertical walls 3a-3h, when attaching a label to this area | region, there is no inconvenience which receives a restriction | limiting in the size of a label. Note that if the length of the vertical walls 3a to 3h is shortened, the reduced pressure absorption amount is reduced by the shortened length. In this case, the width of the vertical walls 3a to 3h is increased, or at the same time, the horizontal walls 3i to 3h. What is necessary is just to change the length and width dimension of 3p.

  4 to 6 show another embodiment of the synthetic resin container according to the present invention. The horizontal walls 3i to 3p that connect the vertical walls 3a to 3h can be connected to each other as curved section recesses as shown in FIGS. This type of vacuum absorbing panel 3 has the advantage that it can be displaced smoothly during vacuum absorption.

  7 to 10 show other embodiments according to the present invention.

  FIG. 7 is a developed view of a configuration in which two adjacent walls out of the vertical walls 3a to 3h are combined into one set and connected at the upper end by horizontal walls 3i to 3p and partitioned in an inverted U shape. FIG. FIG. 9 is a developed view of a configuration in which three adjacent walls 3a to 3h are grouped into a set and the upper and lower ends thereof are sequentially connected and partitioned into N-shapes, and FIG. 9 illustrates the vertical walls 3a to 3h. 4 is a development view of a configuration in which four adjacent blocks are combined into a M-shape by alternately connecting the upper and lower ends thereof, and FIG. 10 is a set of two adjacent walls out of the vertical walls 3a to 3h. It is an expanded view of the structure which connected between them by the horizontal walls 3i-3p in the center part of the vertical walls 3a-3h, and was divided in H shape.

  In such a configuration, the lateral wall effectively displaces when absorbing the reduced pressure of the container, so that not only a sufficient absorption amount can be secured, but also the column 4 is formed between the reduced pressure absorbing panels 3, so that the buckling strength of the container Is increased.

  The horizontal grooves 3i to 3p connecting the vertical walls 3a to 3h can be arranged at arbitrary positions depending on the intended use and size of the container (however, the vacuum absorbing panel 3 is evenly displaced around the trunk portion). The shape of the vacuum absorbing panel is as shown in the waveform, inverted U-shaped (including U-shaped), N-shaped (including inverted N-shaped), M-shaped (including inverted M-shaped) Or it is not limited only to H shape, and various changes are possible.

  Synthetic resins such as polyethylene terephthalate, polypropylene, and polyethylene can be used as the resin constituting the container, but the resin to be used is appropriately selected, and the molding method is not only blow molding but also injection molding. The molding method is not particularly limited.

  It is possible to provide a synthetic resin container capable of securing a high vacuum absorption capacity without affecting the appearance of the container or the label mounting position.

It is the figure (front view) which showed embodiment of the synthetic resin containers according to this invention. It is a side view of the container shown in FIG. It is AA sectional drawing of the container shown in FIG. It is the figure which showed other embodiment of the synthetic resin containers according to this invention. It is a side view of the container shown in FIG. It is BB sectional drawing of the container shown in FIG. It is the figure which showed other embodiment of the synthetic resin containers according to this invention. It is the figure which showed other embodiment of the synthetic resin containers according to this invention. It is the figure which showed other embodiment of the synthetic resin containers according to this invention. It is the figure which showed other embodiment of the synthetic resin containers according to this invention.

Explanation of symbols

1 Waist 2 Horizontal groove 3a to 3h Vertical wall 3i to 3p Horizontal wall 4 Pillar

Claims (4)

A container made of synthetic resin having a partition recess around the trunk and using it as a vacuum absorbing panel,
The vacuum absorbing panel includes a plurality of vertical walls that extend from the mouth to the bottom of the container and are arranged at intervals around the trunk, and at least one horizontal wall that connects adjacent vertical walls to each other. A synthetic resin container characterized by comprising:   The synthetic resin container according to claim 1, wherein the horizontal wall is connected to either the upper end or the lower end of the vertical wall.   The said horizontal wall is a synthetic resin container of Claim 1 or 2 which connects alternately the upper ends and lower ends of the said vertical wall alternately, and divides it into the endless waveform shape as a whole.   The said horizontal wall is a synthetic resin container of Claim 1 or 2 which connects the upper ends or the lower ends of the said vertical wall, respectively, and divides | segments into a U shape or an inverted U shape.

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