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1. WO2007032545 - PLASTIC BOTTLE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1. A plastic bottle, comprising: . .
a mouth portion, a shoulder portion adjoining the mouth portion, and a body portion adjoining the shoulder portion, the body portion having:
a waist portion including a portion whose distance from its central axis to its outer wall is the shortest in the body portion, and also having a specific cross sectional shape;
an upper body portion formed so that it enlarges and broadens gradually or step-by-step from the waist portion upward along the central axis; and
a lower body portion formed so that it enlarges and broadens
gradually or step-by-step from the waist portion downward along the
central axis,
wherein the L2/L1 ratio is set to be between 71% and 90% inclusive, L1 being the longest distance from the central axis to the outer wall of the body portion, and L2 being the distance from the central axis to a given point on the outer wall at the waist portion.
2. A plastic bottle, comprising:
a mouth portion, a shoulder portion adjoining the mouth portion, and a body portion adjoining the shoulder portion, the body portion having:
a waist portion including a portion whose distance from its central axis to its outer wall is the shortest in the body portion, and also having a specific cross sectional shape;
an upper body portion formed so that it enlarges and broadens gradually or step-by-step from the waist portion upward along the central axis; and
a lower body portion formed so that it enlarges and broadens
gradually or step-by-step from the waist portion downward along the
central axis,
wherein L1 , the longest distance from the central axis to the outer wall of the body portion, is set to be between 30 mm and 35 mm inclusive, and L2, the distance from the central axis to a given point on the outer wall at the waist portion, is set to be 25 mm and 27 mm inclusive.
3. The plastic bottle according to claim 1 or 2, wherein the waist portion is positioned 20 mm or less from the center of gravity of the plastic bottle.

4. The plastic bottle according to any of claims 1 to 3, wherein the specific cross sectional shape of the waist portion is a polygon.
5. The plastic bottle according to claim .4, wherein the polygon is an approximate hexagon.
. 6. The plastic bottle according to claim 5, wherein each corner of the approximate hexagon is at least either chamfered or rounded.
7. The plastic bottle according to any of claims 4 to 6, wherein a concave rib is formed in the waist portion.
8. The plastic bottle according to claim 7, wherein the rib is formed around the complete circumference of the waist portion.
9. The plastic bottle according to claim 8, wherein the rib has a rib central circumference, a rib upper circumference adjoining the upper edge of the rib central circumference, and a rib lower circumference adjoining the lower edge of the rib central circumference, and
wherein the rib central circumference is formed in a shape that is non-homothetic with that of the rib upper circumference or the rib lower circumference. iθ. The plastic bottle according to any of claims 1 to 9, wherein the body portion as a whole has a shape approximately like a Japanese hand drum when it is viewed from the front.
11. The plastic bottle according to any of claims 1 to 1 Q, wherein any portion having the L1 value is a circular portion having the maximum diameter of the body portion.
12. The plastic bottle according to any of claims 1 to 11 , wherein a portion having the L1 value is formed in the upper end of the upper body portion and in the lower end of the lower body portion.
13. The plastic bottle according to any of claims 1 to 12, wherein the upper body portion and the lower body portion are formed in a generally polygonal shape.
14. The plastic bottle according to any of claims 1 to 13, further comprising a bottle bottom portion adjoining the lower end of the body portion, wherein the outer wall of the bottle bottom portion is formed so that it narrows gradually or step-by-step downward along the central axis, to
approximately the same size as the waist portion.
15. A plastic bottle, comprising:
a body portion formed in a generally polygonal shape, the body portion having a concave rib formed around its complete circumference, ' . . . 21.

the rib having a rib central circumference, a rib upper circumference adjoining the upper edge of the rib central circumference, and a rib lower circumference adjoining the lower edge of the rib central circumference, and
the rib central circumference formed in a shape that is non-homothetic with that of the rib upper circumference or the rib lower circumference.
16. The plastic bottle according to claim 15, wherein the shapes of the rib upper circumference and the rib lower circumference are the same with each other.
17. The plastic bottle according to claim 15 or 16,
wherein each corner of the shape of the rib central circumference is rounded, and
wherein each corner of the shape of the rib upper circumference or the rib lower circumference is chamfered.
18. The plastic bottle according to claim 17, wherein no flexion point of the chamfered corner of the shape of the rib upper circumference or the rib lower circumference is located on a line connecting the central axis and a point on the rounded corner of the shape of the rib central circumference being the most distant from the central axis.
19. The plastic bottle according to any of claims 15 to 18, wherein the polygonal shape is approximately hexagonal.
20. The plastic bottle according to any of claims 15 to 19, wherein the rib is formed in the vertical middle of the body portion.
21. The plastic bottle according to any of claims 15 to 20, wherein the body portion as a whole has a shape approximately like a Japanese hand drum when it is viewed from the front and a portion with the rib. is narrowed the most.
22. The plastic bottle according to any of claims 15 to 21 , wherein the body portion has a concave ring formed around its complete circumference at each of its upper and lower ends so that one ring is located above and below the rib.
23. A plastic bottle, comprising:
a mouth portion, a shoulder portion adjoining the mouth portion, and a body portion adjoining the shoulder portion,
the shoulder portion having a bump formed around its complete
circumference, and
the bump having:
a vertical circumference; and • ■ ■ " • .. ' "22 ■ "

a spherical-band:shape circumference adjoining the lower end of the vertical circumference and being curved in an outward direction from the central axis. . . - . , '
24. The plastic bottle according, to claim 23, wherein the portion between the vertical circumference and the spherical-band-shape circumference is rounded.
25. The plastic bottle according to claim 24, wherein the lower end of the spherical-band-shape circumference adjoins a portion having the maximum bottle diameter. . . ;. .. . .'
. 26. The plastic bottle according to claim 25, further conhprising a concave ring being formed around the complete circumference and defining a border between the shoulder portion arid the body portion,
wherein the portion having the maximum bottle diameter is formed between and in contact with the bump and the ring.
27. A plastic bottle, comprising:
a bottle wall with at least one circular portion with a circular cross section, the bottle wall having at least one vacuum panel in the shape of a polygon with an odd number of angles,
the vacuum panel being formed to have a first side located close to the circular portion and along the circumference, and
the vacuum panel being dented on at least the first side.
28. The plastic bottle according to claim 27, wherein the first side of the vacuum panel is positioned 2 mm or more but less than 10 mm from the circular portion.
29. The plastic bottle according to claim 27 or 28, wherein a plurality of the vacuum panels is evenly spaced on the bottle wall along its circumference.
30. The plastic bottle according to any of claims 27 to 29, wherein the circular portion has a concave rib formed around its complete circumference.
31. The plastic bottle according to any of claims 27 to 30, wherein the vacuum panel depth gradually varies from the first side toward an apex the greatest distance from the first side, so that the panel depth is the greatest on the first side and decreases toward the apex.
32. The plastic bottle according to claim 31 , wherein the panel depth at the apex the greatest distance from the first side is zero.
33. The plastic bottle according to any of claims 27 to 32, wherein the odd number of angles is three.

; 23 • ■ ■• ' • "

34. The. plastic bottle according to any of claims 27 to 33, wherein a perpend icular line drawn from an apex the greatest distance from the first side to the first side bisects the first side. ,
35. The plastic bottle according to any of claims 27 to 34, wherein two corners in contact with the first side are rounded by R5 or less.
36. The plastic bottle according to any of claims 27 to 35, wherein the vacuum panels are formed above and below the circular portion.
37. The plastic bottle according to any of claims 27 to 36, wherein the circular portion is formed at at least two places, being distant from, each other along the central axis, and ,
wherein the vacuum panels are formed in relation to each circular portion.