JP3933846B2 - Heated filling bottle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blow bottle, and more particularly, to a blow bottle for heat filling in which reinforcing ribs are provided on a shoulder portion of the bottle.
[0002]
[Problems to be solved by the invention]
In heat-filled blow bottles where the shoulder is circular in cross section and the body is circular in cross section or a polyhedron, the mouth and the shoulder that follows are thick, so reinforcement ribs are placed on the shoulder Reinforcement was considered unnecessary.
[0003]
However, when it becomes necessary to reduce the thickness of the mouth and shoulders together with the body part in order to reduce the resin material, the shoulder wall is impacted by the reduced rigidity and buckling strength of the shoulder part. There is a problem that the shoulder wall may be deformed to reduce the commercial value when it is applied or when the pressure is reduced.
[0004]
In view of the above circumstances, an object of the present invention is to provide a heat-filled bottle that is a thin-walled blow bottle with a shoulder portion reinforced.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a heat-filled bottle comprising a mouth and a shoulder, and an octagonal trunk and a bottom as a heat-filled bottle, wherein the shoulder is a wall having a circular cross section. And a polygonal wall surface disposed below the polygonal wall surface. The polygonal wall surface is formed by a curved surface of 32 isosceles triangles that complement each other in the vertical direction. The structure characterized by becoming a 32 square is employ | adopted.
[0006]
In another embodiment, the bottle is a heat-filled bottle comprising a mouth and a shoulder, and a body and a bottom having an octagonal cross section, and the shoulder is formed by a curved surface having a circular cross section, and is downward from an intermediate portion of the curved surface. Further, a configuration is adopted in which a large number of recesses are arranged at equal intervals in the vertical and circumferential directions.
[0007]
As another embodiment, a heat-filled bottle comprising a mouth portion and a shoulder portion, an octagonal trunk portion and a bottom portion, the shoulder portion having a circular cross-sectional wall surface and a 16-sided body disposed below the wall surface. It is possible to adopt a configuration characterized by comprising a square wall surface.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, A is a bottle, which is an octahedron bottle that is stretch blow molded using PET or other synthetic resin and can be heated and filled with the content liquid.
The bottle A is composed of a mouth part 1 and a shoulder part 2, an octagonal body part 3 and a bottom part 4. A screw 5 is screwed on the outer periphery of the mouth part 1, and a neck ring 6 is provided below the screw part 5. Projected.
[0009]
As shown in FIGS. 1 and 2, the shoulder portion 2 is composed of a wall surface 7 having a circular cross section following the mouth portion 1, and a 16-sided rectangular wall surface 8 disposed therebelow.
The square wall surface 8 is formed by 16 curved surfaces 10 which are located at equal intervals in the circumferential direction and have circular arcs extending in the vertical direction as connection edges 9. As shown in FIG. The cross section is a regular hexagon.
[0010]
As shown in FIG. 1, a laterally concave rib 11 is disposed at the boundary between the body portion 3 and the shoulder portion 2, and the lower side thereof is a narrow circumferential surface 12. A laterally concave rib 13 is disposed at the boundary with the bottom portion 4, and a narrow circumferential surface 14 is formed on the upper side thereof.
The body 3 between the circumferential surface 12 and the circumferential surface 14 has an octagonal cross section, and each corner has an arc extending in the axial direction connecting the circumferential surface 12 and the circumferential surface 14. A wall surface 15 is formed, and a reduced pressure absorption surface 16 is formed between all adjacent arc wall surfaces 15.
[0011]
As shown in FIGS. 1 and 4, the reduced pressure absorbing surface 16 is connected to the side edges of the adjacent arc wall surfaces 15 and the upper and lower circumferential surfaces 12, 14, and the inclined walls 17 and the side edges 18 inside the inclined walls 17. It consists of a slightly curved flat wall 19 that connects to the wall.
The flat wall 19 may be a flat wall surface as well as a slightly curved wall surface.
The flat wall 19 is provided with a rib 20 having a circular arc on the top and bottom and an arc-shaped cross section composed of two sides extending in the vertical direction.
[0012]
As shown in FIGS. 1 and 5, the bottom portion 4 includes a bottom peripheral wall 21 following the laterally concave rib 13, a bottom end wall 22, and a bottom wall 23 that is recessed upward from the bottom end wall 22.
The bottom peripheral wall 21 is formed by 16 wall surfaces 25 connected by a connecting portion 24, and a laterally concave rib 26 is provided in the middle thereof.
The bottom wall 23 is provided with a plurality of known radial reinforcing ribs 27.
[0013]
Next, the effect of the bottle of this embodiment will be described.
The bottle of this embodiment is formed using a resin weight of around 26 g as a heating and filling bottle for a capacity of 500 ml.
In the shoulder portion 2, the connection edge 9 of each curved surface 10 serves as a vertical rib to reinforce the shoulder portion 2, and when the curved surface 10 acts as a reduced pressure absorbing surface, the curved surface 10 pivots on the connection edge 9. As deformed.
The bottom part 4 is reinforced by the bottom part peripheral wall 21 by each 16 wall surfaces 25 and the connection part 24 playing the role of a vertical rib.
[0014]
Since the bottle of this embodiment has the shoulder part 2 and the bottom part 4 reinforced together with the body part 3,
In the case of PET, a bottle with a capacity of 500 ml can be molded with a resin of about 26 g, and the amount of resin can be reduced by nearly 20%. Even though the bottle is thinner than a conventional bottle, I was able to.
[0015]
Next, the bottle of 2nd Embodiment is demonstrated.
This embodiment changes the structure of a shoulder part and a bottom part surrounding wall in the said 1st Embodiment bottle.
The same components as those in the first embodiment are shown with a suffix a, and the following description will focus on the changes.
[0016]
6 and 7, the bottle B includes a mouth portion 1a, a shoulder portion 2a, a trunk portion 3a, and a bottom portion 4a.
The shoulder portion 2a includes a wall surface 7a having a circular cross section and a polygonal wall surface 30 disposed below the wall surface 7a.
[0017]
In FIG. 8, the polygonal wall surface 30 divides each circumference of a small-diameter circle a located above the shoulder portion 2 a and a large-diameter circle b located below the shoulder portion 2 a into 16 equal parts, The isosceles triangles d and e as shown in FIG. 8 are created by positioning the equally dividing points at ½ equal angles and sequentially connecting the circumferential equally dividing points c.
The polygonal wall surface 30 is formed by 32 curved surfaces 31 and 32 that complement each other vertically by taking a perpendicular line f drawn from the vertex of an isosceles triangle as a circular arc, and the cross section of the polygonal wall surface 30 is a 32 square shape. It has become.
[0018]
As in the first embodiment, a laterally concave rib 11a is disposed at the boundary between the body 3a and the shoulder 2a, and the lower side is a narrow circumferential surface 12a, and the body 3a. At the boundary between the bottom 4a and the bottom 4a, a laterally concave rib 13a is disposed, and the upper side thereof is a narrow circumferential surface 14a.
The body 3a between the circumferential surface 12a and the circumferential surface 14a has an octagonal cross section, and each corner has an arc extending in the axial direction connecting the circumferential surface 12a and the circumferential surface 14a. A wall surface 15a is formed, and a reduced pressure absorption surface 16a is formed between all adjacent arc wall surfaces 15a.
Since the reduced pressure absorption surface 16a is the same as that of the above embodiment, the description thereof is omitted.
[0019]
The bottom portion 4a includes a bottom peripheral wall 21a following the laterally concave rib 13a, a bottom end wall 22a, and a bottom wall 23a recessed upward from the bottom end wall 22a.
The bottom peripheral wall 21a is circular in cross section, and a laterally concave rib 33 is provided in the middle.
Convex portions 35 are formed at equal intervals on the bottom surface 34 of the horizontal concave rib 33, and a plurality of radial reinforcing ribs 27a are provided on the bottom wall 23a.
[0020]
Next, the effect of this embodiment is demonstrated.
The shoulder portion 2a is reinforced by the connection edge 9a serving as a vertical rib, and the lower curved surface 32 particularly serves as a vacuum absorbing surface.
Since the bottom part 4a forms the convex part 35 in the bottom face 34 of the horizontal concave rib 33, the horizontal concave rib 33 itself is reinforced and the strength of the bottom part 4a is increased.
Similarly to the first embodiment, the shoulder portion 2a and the bottom portion 4a are reinforced together with the body portion 3a, so that a thin hot-filled bottle can be obtained.
[0021]
Next, the bottle of 3rd Embodiment is demonstrated.
In the present embodiment, a large number of recesses are provided and reinforced in the shoulder portion, and the configuration of the body portion is the same as that in the first embodiment. The explanation will focus on the points.
[0022]
As shown in FIGS. 9 and 10, the bottle C includes a mouth portion 1b, a shoulder portion 2b, a trunk portion 3b, and a bottom portion 4b. The shoulder portion 2b is formed by a curved wall surface 40 having a circular cross section following the mouth portion 1b. A large number of concave portions 41 are formed downward from the middle portion of the curved wall surface 40.
A large number of the concave portions 41 are arranged at equal intervals in the vertical direction and at equal angles in the circumferential direction and have an elliptical shape having a certain depth, and the size of the ellipse increases as it goes downward. .
[0023]
A laterally concave rib 11b is disposed at the boundary between the body 3b and the shoulder 2b, and a laterally concave rib 13b is disposed at the boundary between the body 3b and the bottom 4b. Since it is the same as that of 1st Embodiment, it abbreviate | omits description.
[0024]
The bottom 4b includes a bottom peripheral wall 21b, a bottom end wall 22b, and a bottom wall 23b that is recessed upward from the bottom end wall 22b.
The bottom peripheral wall 21b is circular in cross section, and a laterally concave rib 26b is provided in the middle.
A plurality of radial reinforcing ribs 27b are provided on the bottom wall 23b.
[0025]
Next, the effect of the bottle of this embodiment will be described.
Since the curved wall surface 40 of the shoulder is provided with a large number of recesses 41 at predetermined intervals in the vertical and circumferential directions, the curved wall surface 40 is evenly reinforced.
Similarly to the above-described embodiments, the shoulder portion 2b is reinforced together with the reinforcement of the body portion 3b and the bottom portion 4b, so that a thin hot-fill bottle can be obtained.
[0026]
In each of the above-described embodiments, the case where the weight of the resin is reduced and the bottle is thin is described. However, even in the case of a conventional non-thin bottle, the strength of the shoulder is increased by arranging the reinforcing rib on the shoulder. The present invention is not limited to thin-walled hot-fill bottles.
[0027]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists the following effect.
Since the reinforcing member is arranged on the shoulder portion and the shoulder portion is reinforced with the trunk portion, the strength of the shoulder portion can be maintained even in the case of a thin-walled bottle. The resin weight could be saved.
[Brief description of the drawings]
FIG. 1 is a front view of a bottle according to a first embodiment of the present invention.
FIG. 2 is a top view of the bottle.
3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along the line BB in FIG. 1. FIG.
FIG. 5 is a bottom view of the bottle.
FIG. 6 is a front view of a bottle according to a second embodiment.
FIG. 7 is a top view of the bottle.
FIG. 8 is an explanatory diagram of a shoulder wall surface.
FIG. 9 is a front view of a bottle according to a third embodiment.
10 is a cross-sectional view taken along line AA in FIG.
[Explanation of symbols]
A, B, C Bottle 1, 1a, 1b Mouth part 2, 2a, 2b Shoulder part 3, 3a, 3b Body part 4, 4a, 4b Bottom part 7, 7a Wall surface 8 Rectangular wall surface 9, 9a Connection edge 10, 10a, 31 , 32 Curved surface 11, 11a, 11b Horizontal concave rib 15, 15a Arc wall surface 16, 16a Decompression absorbing surface 21, 21a, 21b Bottom peripheral wall 24 Connection portion 25 Wall surface 26, 26a, 26b Horizontal concave rib 30 Polygonal wall surface 33 Horizontal concave Rib 34 Bottom 35 Projection 40 Curved wall 41 Concave

Claims (2)

A heating and filling bottle consisting of a mouth and a shoulder, and an octagonal trunk and a bottom,
The shoulder portion is composed of a wall having a circular cross section and a polygonal wall disposed below the wall,
The polygonal wall surface is formed by a curved surface of 32 isosceles triangles that complement each other in the vertical direction, and the transverse cross-section of the polygonal wall surface is a 32 square shape. A heating and filling bottle consisting of a mouth and a shoulder, and an octagonal trunk and a bottom,
The heating and filling bottle is characterized in that the shoulder portion is formed by a curved surface having a circular cross section, and a plurality of concave portions are disposed at equal intervals in the vertical and circumferential directions downward from an intermediate portion of the curved surface.

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