JP4044282B2 - Bottle container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a synthetic resin bottle container used for packaging various liquids such as soft drinks, sake and seasonings.
[0002]
[Prior art]
As a bottle container formed by stretch blow molding using a thermoplastic resin such as PET, one having a configuration in which a plurality of reduced pressure absorption panels are provided in a container body is known.
As shown in FIG. 9, a flat panel 92 that is recessed inward from the peripheral wall of the trunk portion and extends in the form of a vertically long band is formed on the entire circumference of the trunk portion, as shown in FIG. When the inside of the container is depressurized, the panel 92 is displaced inwardly when the inside of the container is depressurized, thereby absorbing the depressurization and preventing the entire container and other parts from being contracted and deformed.
[0003]
[Problems to be solved by the invention]
The vacuum absorption panel provided in the bottle container, unlike the peripheral wall of the body formed by an arcuate curved surface, has a substantially flat shape and lacks rigidity. In the molding process, distortion remains or blow molding occurs. or adhere to the mold when, or if depressurizing the blow pressure is or incomplete, both panels there is a problem that cause processing defects become easily deformed.
[0004]
In view of such problems of the prior art, the present invention has a reduced pressure absorption panel rigidity to the extent that it does not hinder the vacuum absorption function in a synthetic resin bottle container provided with a vacuum absorption panel in the body. The problem is to prevent the processing defects from occurring by increasing the number.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a vacuum absorption panel comprising an oblong flat panel surface recessed inward of the container from the peripheral wall on the lower half peripheral wall of the trunk having a circular cross section. A synthetic resin bottle container, which is vertically arranged at regular intervals with a column part on the periphery, is ribbed in an oval shape with an appropriate interval from the periphery of the panel to the inside of the panel in the vacuum absorbing panel. The panel surface is divided into an oval flat surface around the rib and an oval flat surface inside the rib .
[0006]
According to this configuration, since the rib is provided in the panel, rigidity is imparted to the panel, and the panel is hardly deformed. The rib is provided in a frame shape in the panel, and when the inside of the container is depressurized, the entire surrounding panel including the rib is displaced and the depressurized absorption is performed.
[0007]
The ribs are arranged at an appropriate distance inward from the peripheral edge of the panel so that the panel is displaced when the container is depressurized. It is preferable that the ribs are provided so that the center of the panel coincides with the center of the rib along the peripheral edge of the panel so that the entire panel is uniformly displaced. When the panel is in the shape of a vertically long oval, the rib is provided in an oval shape along the periphery of the panel.
[0008]
If a rib is further provided vertically inside the frame-like rib, the rigidity of the panel is further increased. The rib provided on the inner side may be either a linear shape or a frame shape as long as it extends vertically.
[0009]
The said structure WHEREIN: It can comprise so that the shape of the cross section of a reduced pressure absorption panel may become a shape which connected the several concentric arc centering on the central axis of a container.
A bottle container with a cylindrical body has a curved rotating body such as a peripheral surface to which a label is attached, and there are few molding defects due to deformation, and the wall of the body is along an arc centering on the container center axis. It is considered that the rigidity increases and the deformation becomes difficult. By applying this to the panel and forming the panel in a shape along a concentric arc centered on the container central axis, the panel rigidity increases and coupled with the ribs in the panel, the panel deforms. It becomes difficult.
[0010]
The rib provided in the panel can be formed in a groove shape or a dome shape protruding with an appropriate width from the panel surface. The protruding direction of the rib may be any of the inside and outside of the container. When multiple ribs are provided in the panel, the protruding directions of the ribs may be aligned or may be protruded in different directions.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described with reference to the drawings.
FIG.1 and FIG.2 has shown the external appearance and main part cutting | disconnection enlarged end surface of the bottle container of 1st Embodiment.
The container 1 is provided with a constricted portion 3 over the entire circumference of the body portion 2 at the center thereof, and a plurality of concave grooves 5 arranged in the circumferential direction on the peripheral wall 4 of the upper half portion, and on the peripheral wall 4 of the lower half portion. The six longitudinally long decompression absorption panels 8 are arranged in parallel vertically across the column part 6 at equal intervals around the entire circumference of the trunk part, and the upper half of the trunk part 2 has a circular cross section. The juxtaposed lower half portions are formed so that the cross section thereof is substantially hexagonal.
[0012]
The reduced pressure absorption panel 8 is a flat panel surface 81 having an oval-shaped peripheral wall surface extending from the lower side of the constricted portion 3 to the upper side of the bottom portion 7, and is further formed into a groove shape in the panel surface 81 from the surface to the outside of the container. The protruding rib 9 is formed in an oval shape along the peripheral edge of the panel surface 81. Specifically, the rib 9 is arranged inside the panel surface 81 with its center coincident with the center of the panel surface 81, and the panel surface 81 is formed by the rib 9 so that the flat surface around the rib and the inner side of the rib are arranged. It is divided into an oval flat surface. The panel surface 81 around the rib 9 has the same width on the left and right sides of the rib 9 and the same width on the upper and lower sides.
[0013]
3 and 4 show the main part appearance and the main part cutting enlarged end face of the bottle container of the second embodiment in which the form of the vacuum absorbing panel 8 is different.
The decompression absorption panel 8 of the container 1 is a flat panel surface 81 in which a peripheral wall surface extending from the lower side of the constricted part 3 to the upper side of the bottom part 7 is formed into an oval shape. A protruding oval rib 9 is provided, and a linear rib 10 extending vertically in a groove shape inwardly into the container is provided in the rib 9. More specifically, the rib 10 passes through the center of the rib 9 and extends from the center to the same length up and down, and the inside of the rib 9 is partitioned by the rib 10 into an oval flat surface.
[0014]
5 and 6 show the main part appearance and the main part cut enlarged end face of the bottle container of the third embodiment in which the form of the vacuum absorbing panel 8 is different.
The decompression absorption panel 8 of the container 1 is formed as a flat panel surface 81 in which a peripheral wall surface extending from the lower side of the constricted portion 3 to the upper side of the bottom portion 7 is formed into an oval shape, and is formed into a groove shape inward of the container in the panel surface 81. A protruding oval rib 9 is provided, and an oval rib 11 protruding in a groove shape inwardly in the container is provided in a panel surface 81 inside the rib 9. Specifically, the rib 11 extends vertically with its center coincided with the center of the panel surface 81 and the rib 9, and the panel surface 81 inside the rib 9 is formed by the rib 11 so as to have an oval flat surface and an oval flat surface. It is divided into planes.
[0015]
7 and 8 show the main part appearance and the main part cutting enlarged end face of the bottle container of the fourth embodiment in which the form of the vacuum absorbing panel 8 is different.
The container 1 is provided with a vacuum absorbing panel 8 having a circumferential wall extending from the lower side of the constricted part 3 to the upper side of the bottom part 7 in an oval shape, and two oval ribs 9 and 11 are provided in the panel surface 81. Although it is the same as that of the said form that it provided heavily, the shape of the cross section of the decompression absorption panel 8 is formed in the shape which connected the several concentric arc centering on the container central axis.
Specifically, as shown in FIG. 8, the reduced pressure absorption panel 8 is an arc centered on the central axis O of the container 1 and is a curved surface formed by an arc R <b> 1 having a smaller diameter than the arc R of the outer shape of the column part 6. Three curved surfaces 81a, a curved surface 81b, which is also an arc centered on the central axis O and formed by an arc R2 having a smaller diameter than the arc R1, and a curved surface 81c formed by an arc R3 having a smaller diameter than the arc R2. Each curved surface is defined by vertically elongated annular ribs 9 and 11 disposed between the curved surfaces and integrally formed. The curved surfaces defined by both ribs are such that the curved surface 81a is an oval surface outside the rib 9, the curved surface 81b is an oval surface between the rib 9 and the rib 11, and the curved surface 81c is the rib 11. The decompression absorption panel 8 is constituted by forming an oval surface inside the inside.
[0016]
According to the bottle container 1 of the present invention configured as described above, since the oblong rib 9 is provided in the vacuum absorbing panel 8, the rigidity of the panel is increased and the deformation in the container forming process described above is caused. It becomes difficult to do. Since the rib 9 is arranged in the panel surface 81, it does not hinder the panel surface from being displaced inward of the container. When the inside of the container is depressurized, the entire vacuum absorbing panel 8 is evenly displaced to reduce the pressure. Absorb.
If multiple ribs are arranged in the reduced pressure absorption panel 8 by providing a linear rib 10 inside the rib 9 or an ellipsoidal rib 11, the rigidity of the panel is further increased.
Further, if the reduced-pressure absorption panel 8 is provided so that the shape of the cross section of the reduced-pressure absorption panel 8 is a shape in which a plurality of concentric arcs centered on the central axis O of the container 1 is connected, the rigidity of the panel is increased, and ribs 9, 11 is provided and the panel is difficult to be deformed.
[0017]
【The invention's effect】
According to the bottle container of the present invention, the rigidity of the reduced pressure absorption panel is increased to such an extent that the reduced pressure absorption function is not hindered, and the defect occurrence rate such as deformation of the panel in the molding process is reduced.
[Brief description of the drawings]
FIG. 1 is an external view of a bottle container according to a first embodiment of the present invention.
FIG. 2 is an enlarged end view (A) of a main part taken along the line S-S in FIG. 1 and an enlarged end view (B) of an essential part cut along the line H-H.
FIG. 3 is an external view of a lower half portion of a bottle container according to a second embodiment of the present invention.
4 is an enlarged end view (A) of a main part taken along line SS of FIG. 3 and an enlarged end view (B) of an essential part cut along line HH.
FIG. 5 is an external view of a lower half portion of a bottle container according to a third embodiment of the present invention.
6 is an enlarged end view (A) of a main part taken along line SS in FIG. 5 and an enlarged end view (B) of an essential part cut along line HH.
FIG. 7 is an external view of a lower half portion of a bottle container according to a fourth embodiment of the present invention.
8 is an enlarged end view (A) of a main part taken along the line SS of FIG. 7 and an enlarged end view (B) of an essential part cut along the line HH.
FIG. 9 is an external view (A) of a conventional bottle container and a cut end view (B) of a main part along the line HH.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottle container 2 Trunk part 3 Constriction part 4 Perimeter wall 8 Decompression-absorption panel 81, 81a, 81b, 81c Panel surface 9, 10, 11 Rib

Claims (3)

A vacuum absorbing panel (8) comprising an oblong flat panel surface recessed inward of the container from the peripheral wall (4) is provided on the lower half peripheral wall (4) of the cylindrical portion (2) having a circular cross section. (2) In a synthetic resin bottle container vertically arranged at equal intervals across the column part (6) around the part (2) ,
An oblong annular rib (9) is provided in the vacuum absorbing panel (8) at an appropriate interval from the periphery of the panel to the inside of the panel, and the panel surface is provided with an oblong flat surface around the rib (9). A bottle container characterized by being partitioned into an oblong flat surface inside the rib (9) . The bottle container according to claim 1, wherein a vertically long oblong rib (11) is provided in a flat surface inside the rib (9) . The bottle container according to claim 1, wherein a longitudinally long linear rib (10) is provided in a flat surface inside the rib (9) .

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