CA2815354C - Bottle - Google Patents
Bottle Download PDFInfo
- Publication number
- CA2815354C CA2815354C CA2815354A CA2815354A CA2815354C CA 2815354 C CA2815354 C CA 2815354C CA 2815354 A CA2815354 A CA 2815354A CA 2815354 A CA2815354 A CA 2815354A CA 2815354 C CA2815354 C CA 2815354C
- Authority
- CA
- Canada
- Prior art keywords
- wall portion
- bottle
- peripheral wall
- movable wall
- ground contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 121
- 230000000630 rising effect Effects 0.000 claims abstract description 84
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000009751 slip forming Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D79/00—Kinds or details of packages, not otherwise provided for
- B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
- B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
- B65D79/0081—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the bottom part thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
- B65D90/36—Weakened parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/0261—Bottom construction
- B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0018—Ribs
- B65D2501/0036—Hollow circonferential ribs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
There is provided a bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom includes: a ground contact portion which is positioned at an outer circumferential edge portion; a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward; an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion to the inner side of the bottle radial direction; and a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radial direction, in which the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, the rising peripheral wall portion extends so as to gradually incline to the inner side of the bottle radial direction from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle of equal to or greater than 0° and less than 20° with respect to a bottle axis, and wherein a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 min.
Description
DESCRIPTION.
Title of Invention BOTTLE
Technical Field [0001]
The present invention relates to a bottle.
Priority is claimed on Japanese Patent Application No. 2010-240945, filed October 27, 2010, and Japanese Patent Application No. 2010-264169, filed November 26, 2010.
Background Art
Title of Invention BOTTLE
Technical Field [0001]
The present invention relates to a bottle.
Priority is claimed on Japanese Patent Application No. 2010-240945, filed October 27, 2010, and Japanese Patent Application No. 2010-264169, filed November 26, 2010.
Background Art
[0002]
As a bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottle in which a bottom wall portion of a bottom includes a ground contact portion which is positioned at an outer circumferential edge portion, a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward, a movable wall portion which projects from an upper end portion of the rising peripheral wall portion to an inner sidc of the bottle radial direction, and a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radiation direction, and depressurization in the bottle is absorbed by causing the movable wall portion to revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward as disclosed in Patent Document 1, for example, has been conventionally known.
Citation List Patent Document
As a bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottle in which a bottom wall portion of a bottom includes a ground contact portion which is positioned at an outer circumferential edge portion, a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward, a movable wall portion which projects from an upper end portion of the rising peripheral wall portion to an inner sidc of the bottle radial direction, and a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radiation direction, and depressurization in the bottle is absorbed by causing the movable wall portion to revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward as disclosed in Patent Document 1, for example, has been conventionally known.
Citation List Patent Document
[0003]
[Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2010-126184 Summary of Invention Technical Problem
[Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2010-126184 Summary of Invention Technical Problem
[0004]
According to the conventional bottle, however, there is a room for improvement of a performance of absorbing depressurization in the bottle.
According to the conventional bottle, however, there is a room for improvement of a performance of absorbing depressurization in the bottle.
[0005]
This, the present invention was made in consideration of the above circumference, and an object thereof is to provide a bottle capable of improving a performance of absorbing depressurization in the bottle.
Solution to Problem
This, the present invention was made in consideration of the above circumference, and an object thereof is to provide a bottle capable of improving a performance of absorbing depressurization in the bottle.
Solution to Problem
[0006]
In order to achieve the above object, the present invention provides the following means.
(1) The bottle according to an embodiment of the present invention is a bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom including: a ground contact portion which is positioned at an outer circumferential edge portion; a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward;
an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion to the inner side of the bottle radial direction; and a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radial direction, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, wherein the rising peripheral wall portion extends so as to gradually incline to the inner side of the bottle radial direction from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle of equal to or greater than 00 and less than 200 with respect to a bottle axis, and wherein the height from the ground = 10 contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5
In order to achieve the above object, the present invention provides the following means.
(1) The bottle according to an embodiment of the present invention is a bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom including: a ground contact portion which is positioned at an outer circumferential edge portion; a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward;
an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion to the inner side of the bottle radial direction; and a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radial direction, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, wherein the rising peripheral wall portion extends so as to gradually incline to the inner side of the bottle radial direction from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle of equal to or greater than 00 and less than 200 with respect to a bottle axis, and wherein the height from the ground = 10 contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5
[0007]
According to the bottle of the embodiment of the present invention, it is possible to absorb depressurization by moving the depressed peripheral wall portion upward by revolving the movable wall portion during the depressurization in the bottle.
Incidentally, the movable wall portion is considered to revolve about the connecting portion with the rising peripheral wall portion due to an increase in diameter caused by the upper end portion of the rising peripheral wall portion moving to the outer side in the bottle radial direction.
According to the bottle of the embodiment of the present invention, it is possible to absorb depressurization by moving the depressed peripheral wall portion upward by revolving the movable wall portion during the depressurization in the bottle.
Incidentally, the movable wall portion is considered to revolve about the connecting portion with the rising peripheral wall portion due to an increase in diameter caused by the upper end portion of the rising peripheral wall portion moving to the outer side in the bottle radial direction.
[0008]
Here, according to the bottle of the embodiment of the present invention, the rising peripheral wall portion inclines to the inner side of the bottle radial direction within the above inclination angle range with respect to the bottle axis when approaching the connecting portion with the movable wall portion, and the height from the ground contact portion to the connecting portion is set within the above height range. Therefore, the rising peripheral wall portion is considered to be designed such that the upper end portion as the connecting portion with the movable portion flexibly and easily moves in the bottle radial direction from the ground contact portion as a base point and the upper end portion thus easily moves to the outer side of the bottle radial direction during the depressurization.
Accordingly, it is possible to cause the movable wall portion to sensitively follow variations in the inner pressure in the bottle and flexibly revolve and to thereby improve the performance of absorbing depressurization.
Here, according to the bottle of the embodiment of the present invention, the rising peripheral wall portion inclines to the inner side of the bottle radial direction within the above inclination angle range with respect to the bottle axis when approaching the connecting portion with the movable wall portion, and the height from the ground contact portion to the connecting portion is set within the above height range. Therefore, the rising peripheral wall portion is considered to be designed such that the upper end portion as the connecting portion with the movable portion flexibly and easily moves in the bottle radial direction from the ground contact portion as a base point and the upper end portion thus easily moves to the outer side of the bottle radial direction during the depressurization.
Accordingly, it is possible to cause the movable wall portion to sensitively follow variations in the inner pressure in the bottle and flexibly revolve and to thereby improve the performance of absorbing depressurization.
[0009]
In addition, it is considered that the upper end portion of the rising peripheral wall portion does not easily move in the bottle radial direction while the ground contact portion positioned on a side of a lower end portion ofthe rising peripheral wall portion easily moves in the bottle radial direction when the inclination angle of the rising peripheral wall portion is equal to or greater than 200 and the height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is less than 3.5 mni. Therefore, the ground contact portion easily moves to the further outer side than the upper end portion of the rising peripheral wall portion in the bottle radial direction during the depressurization, and there is a concern that the revolving motion of the movable wall portion is inhibited.
In addition, it is considered that the upper end portion of the rising peripheral wall portion does not easily move in the bottle radial direction while the ground contact portion positioned on a side of a lower end portion ofthe rising peripheral wall portion easily moves in the bottle radial direction when the inclination angle of the rising peripheral wall portion is equal to or greater than 200 and the height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is less than 3.5 mni. Therefore, the ground contact portion easily moves to the further outer side than the upper end portion of the rising peripheral wall portion in the bottle radial direction during the depressurization, and there is a concern that the revolving motion of the movable wall portion is inhibited.
[0010]
(2) In the bottle according to the embodiment of the present invention, the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion to the inner side of the bottle radial direction, and an angle between the movable wall portion and the rising peripheral wall = CA 02815354 2013-04-19 portion is equal to or greater than 600 and less than or equal to 85 .
(2) In the bottle according to the embodiment of the present invention, the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion to the inner side of the bottle radial direction, and an angle between the movable wall portion and the rising peripheral wall = CA 02815354 2013-04-19 portion is equal to or greater than 600 and less than or equal to 85 .
[0011]
In such a case, since the angle between the movable wall portion and the rising peripheral wall portion is within the above range, the aforementioned advantageous 5 effect can be significantly displayed, that is, it is possible to cause the movable wall portion to sensitively follow variations in the inner pressure in the bottle and flexibly rotate and to thereby improve the performance of absorbing depressurization.
In addition, since the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion to the inner side of the bottle radial direction, it is easy to revolve the movable wall portion downward during the filling of the bottle with a substance. Therefore, it is possible to increase the depressurization absorbing capacity immediately after the filling by increasing the volume of the bottle and to thereby further improve the performance of absorbing depressurization.
In such a case, since the angle between the movable wall portion and the rising peripheral wall portion is within the above range, the aforementioned advantageous 5 effect can be significantly displayed, that is, it is possible to cause the movable wall portion to sensitively follow variations in the inner pressure in the bottle and flexibly rotate and to thereby improve the performance of absorbing depressurization.
In addition, since the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion to the inner side of the bottle radial direction, it is easy to revolve the movable wall portion downward during the filling of the bottle with a substance. Therefore, it is possible to increase the depressurization absorbing capacity immediately after the filling by increasing the volume of the bottle and to thereby further improve the performance of absorbing depressurization.
[0012]
(3) In the bottle according to the embodiment of the present invention, the movable wall portion extends so as to gradually incline downward from an outer end portion connected to the rising peripheral wall portion to an inner end portion connected to the depressed peripheral wall portion, and the height from the ground contact portion to the inner end portion of the movable wall portion is 45% or less ofthe height from the ground contact portion to the outer end portion of the movable wall portion.
(3) In the bottle according to the embodiment of the present invention, the movable wall portion extends so as to gradually incline downward from an outer end portion connected to the rising peripheral wall portion to an inner end portion connected to the depressed peripheral wall portion, and the height from the ground contact portion to the inner end portion of the movable wall portion is 45% or less ofthe height from the ground contact portion to the outer end portion of the movable wall portion.
[0013]
According to the bottle of the embodiment of the present invention, it is possible to absorb depressurization by moving the depressed peripheral wall portion upward by revolving the movable wall portion during the depressurization in the bottle.
Particularly, since the movable wall portion extends so as to gradually incline downward from the outer end portion to the inner end portion and the height from the ground contact portion to the inner end portion is 45% or less of the height from the ground contact portion to the outer end portion to secure a great height difference between the outer end portion and the inner end portion, it is easy to revolve the movable wall portion downward during the filling of the bottle with a substance. Therefore, it is possible to increase the depressurization absorbing capability immediately after the filling by increasing the volume of the bottle and to thereby improve the performance of absorbing depressurization.
According to the bottle of the embodiment of the present invention, it is possible to absorb depressurization by moving the depressed peripheral wall portion upward by revolving the movable wall portion during the depressurization in the bottle.
Particularly, since the movable wall portion extends so as to gradually incline downward from the outer end portion to the inner end portion and the height from the ground contact portion to the inner end portion is 45% or less of the height from the ground contact portion to the outer end portion to secure a great height difference between the outer end portion and the inner end portion, it is easy to revolve the movable wall portion downward during the filling of the bottle with a substance. Therefore, it is possible to increase the depressurization absorbing capability immediately after the filling by increasing the volume of the bottle and to thereby improve the performance of absorbing depressurization.
[0014]
(4) In the bottle according to the embodiment of the present invention, the height of the inner end potion of the movable wall portion from the ground contact portion may be equal to or greater than 2 mm.
(4) In the bottle according to the embodiment of the present invention, the height of the inner end potion of the movable wall portion from the ground contact portion may be equal to or greater than 2 mm.
[0015]
In such a case, the inner end portion does not easily project further downward than the ground contact portion when the movable wall portion revolves downward during the filling of the content, and it is possible to easily avoid contact with the ground contact surface.
Accordingly, it is possible to reliably perform the filling operation while suppressing the projection of the inner end portion of the movable wall portion even in the case of high-temperature filling, for example.
Advantageous Effects of Invention
In such a case, the inner end portion does not easily project further downward than the ground contact portion when the movable wall portion revolves downward during the filling of the content, and it is possible to easily avoid contact with the ground contact surface.
Accordingly, it is possible to reliably perform the filling operation while suppressing the projection of the inner end portion of the movable wall portion even in the case of high-temperature filling, for example.
Advantageous Effects of Invention
[0016]
According to a bottle of an embodiment of the present invention, it is possible to improve the performance of absorbing depressurization in the bottle.
6a In accordance with one aspect of invention, there is provided bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom comprising: a ground contact portion which is positioned at an outer circumferential edge portion; a rising peripheral wall portion which is connected to the ground contact portion and extends upward and inward towards a central longitudinal axis of the bottle;
an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion towards the central longitudinal axis of the bottle; and a depressed peripheral wall portion which extends upward and inward from an inner end portion of the movable wall portion, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, the upper end portion of the rising peripheral wall portion moves outwardly when the movable wall portion revolves about the connecting portion, the rising peripheral wall portion extends inward towards the central longitudinal axis of the bottle so that a diameter of the rising peripheral wall portion is gradually reduced from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle equal to or greater than 00 and less than 200 with respect to the central longitudinal axis of the bottle, a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 mm, the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion toward the central longitudinal axis of the bottle, and an angle between the movable wall portion and the rising peripheral wall portion is equal to or greater than 60 and less than or equal to 85 .
Brief Description of the Drawings
According to a bottle of an embodiment of the present invention, it is possible to improve the performance of absorbing depressurization in the bottle.
6a In accordance with one aspect of invention, there is provided bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom comprising: a ground contact portion which is positioned at an outer circumferential edge portion; a rising peripheral wall portion which is connected to the ground contact portion and extends upward and inward towards a central longitudinal axis of the bottle;
an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion towards the central longitudinal axis of the bottle; and a depressed peripheral wall portion which extends upward and inward from an inner end portion of the movable wall portion, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, the upper end portion of the rising peripheral wall portion moves outwardly when the movable wall portion revolves about the connecting portion, the rising peripheral wall portion extends inward towards the central longitudinal axis of the bottle so that a diameter of the rising peripheral wall portion is gradually reduced from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle equal to or greater than 00 and less than 200 with respect to the central longitudinal axis of the bottle, a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 mm, the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion toward the central longitudinal axis of the bottle, and an angle between the movable wall portion and the rising peripheral wall portion is equal to or greater than 60 and less than or equal to 85 .
Brief Description of the Drawings
[0017]
FIG. 1 is a side view of a bottle according to an embodiment of the present invention.
FIG. 2 is a bottom view of the bottle shown in FIG. 1.
FIG. 3 is a cross-sectional view of the bottle taken along the line A-A shown in FIG. 2.
FIG. 4 is a cross-sectional view of the bottle taken along the line B-B shown in FIG. 2.
FIG. 5 is a bottom view of a bottle according to a modified example of the embodiment of the present invention.
FIG. 6 is a cross-sectional view of the bottle taken along the line C-C shown in FIG. 5.
FIG. 7 is a side view of a bottle according to an embodiment of the present invention.
FIG. 8 is a bottom view of the bottle shown in FIG. 7.
FIG. 9 is a cross-sectional view of the bottle take along the line A-A shown in FIG. 8.
FIG. 10 is a bottom view of a bottle according to a modified example of the embodiment of the present invention.
FIG. 11 is a cross-sectional view of the bottle taken along the line B-B shown in FIG.
10.
Description of Embodiments
FIG. 1 is a side view of a bottle according to an embodiment of the present invention.
FIG. 2 is a bottom view of the bottle shown in FIG. 1.
FIG. 3 is a cross-sectional view of the bottle taken along the line A-A shown in FIG. 2.
FIG. 4 is a cross-sectional view of the bottle taken along the line B-B shown in FIG. 2.
FIG. 5 is a bottom view of a bottle according to a modified example of the embodiment of the present invention.
FIG. 6 is a cross-sectional view of the bottle taken along the line C-C shown in FIG. 5.
FIG. 7 is a side view of a bottle according to an embodiment of the present invention.
FIG. 8 is a bottom view of the bottle shown in FIG. 7.
FIG. 9 is a cross-sectional view of the bottle take along the line A-A shown in FIG. 8.
FIG. 10 is a bottom view of a bottle according to a modified example of the embodiment of the present invention.
FIG. 11 is a cross-sectional view of the bottle taken along the line B-B shown in FIG.
10.
Description of Embodiments
[0018]
Hereinafter, a description will be given of a bottle according to an embodiment of the present invention with reference to the drawings.
A bottle 1 according to the embodiment includes a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom 14 as shown in FIGS. 1 to 4 and is substantially configured such that these components are sequentially provided in this order while the respective center axis lines are positioned on a common axis.
Hereinafter, a description will be given of a bottle according to an embodiment of the present invention with reference to the drawings.
A bottle 1 according to the embodiment includes a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom 14 as shown in FIGS. 1 to 4 and is substantially configured such that these components are sequentially provided in this order while the respective center axis lines are positioned on a common axis.
[0019]
Hereinafter, the common axis is referred to as a bottle axis O. the side of the mouth portion 11 in the direction of the bottle axis 0 is referred to as an upper side, and the side of the bottom 14 is referred to as a lower side. In addition, a direction which is perpendicular to the bottle axis 0 is referred to as a bottle radial direction, and a direction revolving about the bottle axis 0 is referred to as a bottle circumferential direction.
In addition, the bottle 1 is formed by blow-molding a pre-forni which has been formed into a cylindrical shape with a bottom by injection molding and is integrally formed of a synthetic resin material. In addition, a cap which is not shown in the drawings is threadably mounded to the mouth portion 11. Moreover, the horizontal cross-sectional shapes of the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom 14 which are perpendicular to the bottle axis 0 are all circular in shape.
[00201 A first annular concave groove 15 is continuously formed over the entire circumference of a part between the shoulder portion 12 and the body portion 13.
The body portion 13 is formed into a cylindrical shape to have a smaller diameter than the diameters of the lower end portion of the shoulder portion 12 and the heel portion 17 of the bottom 14 which will be described later. A plurality of second annular concave grooves 16 are formed on the body portion 13 at intervals in the direction of the bottle axis O. In the example shown in the drawing, four second =
annular concave grooves 16 are formed at equal intervals in the direction of the bottle axis O. Each of the second annular concave grooves 16 is a groove portion which is continuously formed over the entire circumference of the body portion 13.
[0021]
The bottom 14 is formed into a cup shape and includes a heel portion 17 with an upper end opening portion which is connected to the lower end opening portion of the body portion 13 and a bottom wall portion 19 which blocks the lower end opening portion of the heel portion 17 and includes a ground contact portion 18 at the outer circumferential edge portion.
[0022]
In the heel portion 17, a heel lower end portion 27 which is connected to the ground contact portion 18 from the outer side of the bottle radial direction is formed to have a smaller diameter than the diameter of an upper heel portion 28 connected to the heel lower end portion 27 from the upper side.
Both the upper heel portion 28 and the lower end portion of the shoulder portion 12 have the maximum outer diameter in the bottle 1.
[0023]
In addition, the diameter of a coupling part 29 between the heel lower end portion 27 and the upper heel portion 28 is gradually reduced from the upper side to the lower side, and thus, the diameter of the heel lower end portion 27 is smaller than the diameter of the upper heel portion 28. Athird annular concave groove 20 with approximately the same depth as that of the above second annular concave groove 16 is continuously formed over the entire circumference of the upper heel portion 28.
[0024]
As shown in FIG 3, the bottom wall portion 19 includes a rising peripheral wall = = CA 02815354 2013-04-19 portion 21 connected to the ground contact portion 18 from the inner side of the bottle radial direction and extending upward, an annular movable wall portion 22 projecting from the upper end portion of the rising peripheral wall portion 21 to the inner side of the bottle radial direction, and a depressed peripheral wall portion 23 extending upward from 5 the inner end portion of the movable wall portion 22 in the bottle radial direction.
[0025]
The movable wall portion 22 is formed into a curved surface shape which protrudes downward and extends so as to gradually incline downward from the outer side to the inner side of the bottle radial direction. The movable wall portion 22 and the 10 rising peripheral wall portion 21 are coupled via a curved surface portion 25 which protrudes upward. In addition, the movable wall portion 22 is designed to be freely revolved about the curved surface portion (the connecting part with the rising peripheral wall portion 21) 25 so as to cause the depressed peripheral wall portion 23 to move upward.
In addition, an annular bottom (the movable wall portion 22 and the depressed peripheral wall portion 23) formed between the upper end of the rising peripheral wall portion 21 and an outer edge of an apex wall 24 disposed above the upper end of the rising peripheral wall portion 21 is formed into a substantially U shape (substantially V
shape or substantially L shapc) in a vertical half cross-sectional view so as to expand downward over the entire circumference.
[0026]
The diameter of the rising peripheral wall portion 21 is gradually reduced from the lower side to the upper side. Specifically, the rising peripheral wall portion 21 extends so as to gradually incline to the inner side of the bottle radial direction from the ground contact portion 18 to the curved surface portion 25 which is a connecting portion = CA 02815354 2013-04-19 with the movable wall portion 22, and the inclination angle 01 is set to 10 , for example, within an angular range of equal to or greater than 0 and less than 20 with respect to the bottle axis O.
[0027]
In addition, a height T from the ground contact portion 18 to the curved surface portion 25 is set to 5 mm, for example. within a height range of equal to or greater than 3.5 mm and less than or equal to 7.5 mm in this embodiment. Moreover, an angle between the movable wall portion 22 and the rising peripheral wall portion 21 is set to 73 , for example, within an angular range of equal to or greater than 600 and less than or equal to 85 .
[0028]
As shown in FIGS. 2 and 4, a plurality of ribs 40 are radially disposed about the bottle axis 0 in the bottle wall portion 22. That is, the respective ribs 40 are disposed at uniform intervals in the bottle circumferential direction.
In the example shown in the drawings, the ribs 40 are configured such that a plurality of concave portions 40a depressed upward in the curved surface shapes intermittently and linearly extend along the bottle radial direction. In so doing, the ribs 40 have a wave form in a vertical cross-sectional view along the bottle radial direction.
[0029]
The respective concave portions 40a are formed into a same size and a same shape and are arranged at equal intervals along the bottle radial direction.
In addition, the respective positions, at which the plurality of concave portions 40a are disposed, in the bottle radial direction are the same in each of the plurality of ribs 40.
In addition, a concave portion 40a at the outermost position in the bottle radial = CA 02815354 2013-04-19 direction among the plurality of concave portions 40a in the respective ribs 40 is proximate to the curved surface portion 25 from the inner side of the bottle radial direction, and a concave portion 40a at the innermost position in the bottle radial direction is proximate to the depressed peripheral wall portion 23 from the outer side of the bottle radial direction.
[00301 The depressed peripheral wall portion 23 is coaxially disposed with the bottle axis 0 as shown in FIG 3, and is formed into a circular shape in the horizontal cross-sectional view such that the diameter thereof adually increases from the upper side to the lower side. A disc-shaped apex wall 24 which is coaxially an-anged with the bottle axis 0 is connected to the upper end portion of the depressed peripheral wall portion 23, and the depressed peripheral wall portion 23 and the apex wall 24 form a cylindrical shape with an apex as a whole.
The depressed peripheral wall portion 23 is formed into a curved surface shape which protrudes to the inner side of the bottle radial direction, and the upper end portion includes a curved wall portion 23a which is sequentially provided at the outer circumferential edge portion of the apex wall 24. The lower end portion of the curved wall portion 23a is sequentially provided at the inner end portion of the movable wall portion 22 in the bottle radial direction via the curved surface portion 26 which protrudes downward.
[0031]
If the inside of the bottle 1 configured as described above is depressurized, the movable wall portion 22 revolves upward about the curved surface portion 25 of the bottom wall portion 19 such that the movable wall portion 22 moves to lift the depressed peripheral wall portion 23 upward. That is, it is possible to absorb variations in the inner pressure (depressurization) in the bottle 1 by actively deforming the bottom wall portion 19 of the bottle 1 during depressurization.
[0032]
Incidentally, it is considered that the movement of the upper end portion of the rising peripheral portion 21 to the outer side of the bottle radial direction causes the movable wall portion 22 to revolve about the curved surface portion 25 which is a connecting portion with the rising peripheral portion 21 during depressurization.
Here, in the bottle 1 according to the embodiment, the rising peripheral wall portion 21 inclines to the inner side of the bottle radial direction at the inclination angle 01 with respect to the bottle axis 0 as the rising peripheral wall portion 21 approaches the curved surface portion 25, the height from the ground contact portion 18 to the curved surface portion 25 is set to the above height T, and further, the angle between the rising peripheral wall portion 21 and the movable wall portion 22 is set to the above angle 02.
[0033]
Therefore, it is considered that the upper end portion of the rising peripheral wall portion 21, which is the connecting portion with the movable wall portion 22, can easily and flexibly move in the bottle radial direction from the ground contact portion 18 as a based point, and therefore, the upper end portion can easily moves to the outer side of the bottle radial direction during the depressurization. Accordingly, it is possible to cause the movable wall portion 22 to sensitively follow the variations in the inner pressure in the bottle 1 and flexibly revolve and enhance the performance of absorbing depressurization.
In addition, since the movable wall portion 22 extends so as to gradually incline downward from the curved surface portion 25 as the connecting portion with the rising = CA 02815354 2013-04-19 peripheral wall portion 21 to the inner side of the bottle radial direction, it is easy to cause the movable wall portion 22 to revolve downward during filling of the bottle with a substance. Therefore, it is possible to enhance the depressurization absorbing capacity immediately after the filling by increasing a volume in the bottle 1 and to thereby further easily improve the performance of absorbing depressurization.
[0034]
In addition, since the plurality of ribs 40 are formed on the movable portion ofthe bottom wall portion 19, it is possible to increase a pressure receiving area by increasing the surface area of the movable wall portion 22 and to rapidly deform the movable wall portion 22 according to variations in the inner pressure in the bottle 1.
[0035]
The bottle 1 according to the embodiment is suitable for a bottle with a volume of 1 liter or less and with a ground contact diameter of 85 mm or less.
[0036]
In addition, the technical scope of the present invention is not limited to the embodiment, and various modifications can be made without departing from the gist of the present invention.
[0037]
For example, although the ribs 40 intermittently and radially extend in the above embodiment, the present invention is not limited thereto, and the ribs 40 may continuously extend or extend while curved. In addition, the design of the shape and the size of the concave portions 40a can be appropriately changed. Moreover, the ribs 40 are not essential and may not be provided.
[0038]
In addition, a concave and convex portion 41 may be fomied over the entire = CA 02815354 2013-04-19 circumference of the rising peripheral wall portion 21 as shown in FIGS. 5 and 6. In addition, the concave and convex portion 41 is configured by disposing a plurality of convex portions 41a formed into curved surface shapes which protrude to the inner side of the bottle radial direction at intervals in the bottle circumferential direction.
5 By forming the concave and convex portion 41 as described above, feeling of incongruity is not easily given when the bottom 14 ofthe bottle 1 filled with content is viewed since light which is incident on the rising peripheral wall portion 21 is diffusely reflected by the concave and convex portion 41 or the concave and convex portion 41 is also filled with the substance in the bottle 1, for example.
10 [0039]
Although the angle 02 between the rising peripheral wall portion 21 and the movable wall portion 22 is configured to be within an angular range of equal to or greater than 600 and less than or equal to 85 in the embodiment, the present invention is not limited to the angular range. For example, the movable wall portion 22 may be 15 appropriately changed so as to project in parallel with the bottle radial direction or incline upward, for example, or may be appropriately changed so as to be formed into a planer shape or a concave curved surface shape which is depressed upward.
However, it is preferable that the angle 02 between the rising peripheral wall portion 21 and the movable wall portion 22 be within the angular range of not equal to or great than 60 and less than or equal to 85 and that the movable wall portion 22 incline downward as in the embodiment. In so doing, the revolution property of the movable wall portion 22 is enhanced, and it is easy to improve the performance of absorbing depressurization.
[0040]
Although the rising peripheral wall portion 21 and the movable wall portion 22 are connected to each other via the curved surface portion 25 in the embodiment, a configuration is also applicable in which an annular concave portion which is depressed upward with respect to a virtual line extended to the outer side of the bottle radial direction along the line of the surface shape of the movable wall portion 22 is formed at the connecting portion and the movable wall portion 22 freely revolves about the annular concave portion. In such a case, it is possible to expect a high hinge effect by providing flexibility to the outer end portion of the movable wall portion 22 in the radial direction to thereby cause the movable wall portion 22 to further sensitively follow the variations in the inner pressure in the bottle 1 and flexibly deform the movable wall portion 22 and further improve the performance of absorbing depressurization in the bottle 1.
In addition, even in the case in which the annular concave groove is formed, it is preferable that the angle between the rising peripheral wall portion 21 and the movable wall portion 22, more specifically, the angle 02 between the rising peripheral wall portion 21 and the virtual line be within the angular range of equal to or greater than 60 and less than or equal to 85 .
[0041]
In addition, although each of the horizontal cross-sectional shapes of the shoulder portion 12, the body portion 13, and the bottom 14, which is perpendicular to the bottle axis 0, is a circular shape in the embodiment, the horizontal cross-sectional shape is not limited thereto and may be appropriately changed to a polygonal shape or the like, for example.
[0042]
In addition, the synthetic resin material forming the bottle 1 may be appropriately changed to polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof. Furthermore, the bottle 1 may be formed into a laminated structure with an intermediate layer as well as a single layer structure. In addition, examples of the intermediate layer include a layer formed of a resin material with a gas barrier property, a layer formed of a recycled tnaterial, a layer formed of a resin material with an oxygen absorption property, and the like.
[0043]
(Examples) Next, description will be given of an example of a test (analysis) for observing how a relationship between depressurization intensity (kPa) and depressurization absorbing volume (m1) changes when the inclination angle 01 of the rising peripheral wall portion 21, and the height T from the ground contact portion 18 to the curved surface portion 25 are respectively changed.
In addition, the test was performed using the bottle 1 shown in FIGS. 1 to 4, in which the plurality of ribs 40 were formed in the movable wall portion 22.
[0044]
The test was performed by preparing a total of four patterns, namely a first pattern with the inclination angle 01 of 5 and with the height T of 3.5 mm, a second pattern with the inclination angle 01 of 100 and with the height T of 3.5 mm, a third pattern with the inclination angle 01 of 15 and with the height I of 3.5 mm, and a comparison pattern with the inclination angle 01 of 20 and the height T of 3.5 mm.
[0045]
As a result, it was confirmed that a depressurization absorbing capacity increased in an initial stage in which an increase in the depressurization intensity was started in any of the four patterns. This is considered to be because the entire bottom wall portion 19 moved upward due to the depressurization in the bottle 1.
However, it was confirmed that the depressurization absorbing capacity steeply increased at later timing at which the depressurization intensity further increased and reached about 10 (kPa) in the first to third patterns. This is considered to be because the movable wall portion 22 smoothly revolved and inversely deformed and the depressed peripheral wall portion 23 was thus moved upward since the inclination angle 01 was within the angular range of equal to or greater than 0 and less than 200 and the height T
was in the height range of equal to or greater than 3.5 min and less than or equal to 7.5 mm.
On the other hand, the steep increase phenomenon of the depressurization absorbing capacity due to the inverse deformation of the movable wall portion 22 was not observed in the case of the comparison pattern even when the depressurization intensity was further increased.
[0046]
In addition, it was similarly confirmed that the depressurization absorbing capacity steeply increased at the timing at which the depressurization intensity reached about 10 (kPa) even when the height T was set to 5.0 mm instead of 3.5 mm and the inclination angle 01 was set to 5 , 10 , 15 , and 20 in the first to third patterns.
Furthermore, the same change was confirmed even when the height T was set to 7.5 mm and the inclination angle 01 was set to 5 , 10 , 15 , and 20 . In addition, the steep increase phenomenon of the depressurization absorbing capacity was observed in the above height range even when the inclination angle 01 was set to 0 .
However, there is a problem that it is difficult to shape the bottle if the inclination angle 01 is set to less than 0 (negative).
[0047]
Based on the above, it was confirmed that the movable wall portion 22 was flexibly deformed and the performance of absorbing depressurization was improved by setting the inclination angle 01 of the rising peripheral wall portion 22 within the angular range of equal to or greater than 00 to less than 200 and setting the height T
from the ground contact portion 18 to the curved surface portion 25 within the height range of equal to or greater than 3.5 inm to less than or equal to 7.5 mm.
[0048]
Hereinafter, a description will be given of a bottle according to a second embodiment of the present invention referring to FIGS. 7 to 9. In the description ofthe second embodiment, the same reference numerals as those in the first embodiment will be used for the same configuration as those in the first embodiment, and a description thereof will be omitted here.
[0049]
As shown in FIG 7, the bottom 140 of the bottle 10 according to the embodiment is formed into a cup shape and includes a heel portion 170 at which an upper end opening portion of the bottom 140 is connected to the lower end opening portion of the body portion 13 and a bottom wall portion 190 which blocks the lower end opening portion of the heel portion 170 and includes a ground contact portion 180 at the outer circumferential edge portion.
[0050]
In the heel portion 170, a heel lower end portion 270 which is connected to the ground contact portion 180 from the outer side of the bottle radial direction is formed to have a smaller diameter than the diameter of an upper heel portion 280 connected to the heel lower end portion 270 from the upper side.
Both the upper heel portion 280 and both end portions of the body portion 13 in the direction of the bottle axis 0 have the maximum outer diameter in the bottle 10.
[0051]
In addition, the diameter of a coupling part 290 between the heel lower end 5 portion 270 and the upper heel portion 280 is gradually reduced from the upper side to the lower side, and thus, the diameter of the heel lower end portion 270 is smaller than the diameter of the upper heel portion 280. A fourth annular concave groove 310 with approximately the same depth as that of the third annular concave groove 20 is continuously formed over the entire circumference of the upper heel portion 280.
10 [0052]
As shown in FIG 9, the bottom wall portion 190 includes a rising peripheral wall portion 210 connected to the ground contact portion 180 from the inner side of the bottle radial direction and extending upward, an annular movable wall portion projecting from the upper end portion ofthe rising peripheral wall portion 210 to the 15 inner side of the bottle radial direction, and a depressed peripheral wall portion 230 extending upward from the inner side of the movable wall portion 220 in the bottle radial direction.
[0053]
The ground contact portion 180 is in annular line contact, for example, with a
Hereinafter, the common axis is referred to as a bottle axis O. the side of the mouth portion 11 in the direction of the bottle axis 0 is referred to as an upper side, and the side of the bottom 14 is referred to as a lower side. In addition, a direction which is perpendicular to the bottle axis 0 is referred to as a bottle radial direction, and a direction revolving about the bottle axis 0 is referred to as a bottle circumferential direction.
In addition, the bottle 1 is formed by blow-molding a pre-forni which has been formed into a cylindrical shape with a bottom by injection molding and is integrally formed of a synthetic resin material. In addition, a cap which is not shown in the drawings is threadably mounded to the mouth portion 11. Moreover, the horizontal cross-sectional shapes of the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom 14 which are perpendicular to the bottle axis 0 are all circular in shape.
[00201 A first annular concave groove 15 is continuously formed over the entire circumference of a part between the shoulder portion 12 and the body portion 13.
The body portion 13 is formed into a cylindrical shape to have a smaller diameter than the diameters of the lower end portion of the shoulder portion 12 and the heel portion 17 of the bottom 14 which will be described later. A plurality of second annular concave grooves 16 are formed on the body portion 13 at intervals in the direction of the bottle axis O. In the example shown in the drawing, four second =
annular concave grooves 16 are formed at equal intervals in the direction of the bottle axis O. Each of the second annular concave grooves 16 is a groove portion which is continuously formed over the entire circumference of the body portion 13.
[0021]
The bottom 14 is formed into a cup shape and includes a heel portion 17 with an upper end opening portion which is connected to the lower end opening portion of the body portion 13 and a bottom wall portion 19 which blocks the lower end opening portion of the heel portion 17 and includes a ground contact portion 18 at the outer circumferential edge portion.
[0022]
In the heel portion 17, a heel lower end portion 27 which is connected to the ground contact portion 18 from the outer side of the bottle radial direction is formed to have a smaller diameter than the diameter of an upper heel portion 28 connected to the heel lower end portion 27 from the upper side.
Both the upper heel portion 28 and the lower end portion of the shoulder portion 12 have the maximum outer diameter in the bottle 1.
[0023]
In addition, the diameter of a coupling part 29 between the heel lower end portion 27 and the upper heel portion 28 is gradually reduced from the upper side to the lower side, and thus, the diameter of the heel lower end portion 27 is smaller than the diameter of the upper heel portion 28. Athird annular concave groove 20 with approximately the same depth as that of the above second annular concave groove 16 is continuously formed over the entire circumference of the upper heel portion 28.
[0024]
As shown in FIG 3, the bottom wall portion 19 includes a rising peripheral wall = = CA 02815354 2013-04-19 portion 21 connected to the ground contact portion 18 from the inner side of the bottle radial direction and extending upward, an annular movable wall portion 22 projecting from the upper end portion of the rising peripheral wall portion 21 to the inner side of the bottle radial direction, and a depressed peripheral wall portion 23 extending upward from 5 the inner end portion of the movable wall portion 22 in the bottle radial direction.
[0025]
The movable wall portion 22 is formed into a curved surface shape which protrudes downward and extends so as to gradually incline downward from the outer side to the inner side of the bottle radial direction. The movable wall portion 22 and the 10 rising peripheral wall portion 21 are coupled via a curved surface portion 25 which protrudes upward. In addition, the movable wall portion 22 is designed to be freely revolved about the curved surface portion (the connecting part with the rising peripheral wall portion 21) 25 so as to cause the depressed peripheral wall portion 23 to move upward.
In addition, an annular bottom (the movable wall portion 22 and the depressed peripheral wall portion 23) formed between the upper end of the rising peripheral wall portion 21 and an outer edge of an apex wall 24 disposed above the upper end of the rising peripheral wall portion 21 is formed into a substantially U shape (substantially V
shape or substantially L shapc) in a vertical half cross-sectional view so as to expand downward over the entire circumference.
[0026]
The diameter of the rising peripheral wall portion 21 is gradually reduced from the lower side to the upper side. Specifically, the rising peripheral wall portion 21 extends so as to gradually incline to the inner side of the bottle radial direction from the ground contact portion 18 to the curved surface portion 25 which is a connecting portion = CA 02815354 2013-04-19 with the movable wall portion 22, and the inclination angle 01 is set to 10 , for example, within an angular range of equal to or greater than 0 and less than 20 with respect to the bottle axis O.
[0027]
In addition, a height T from the ground contact portion 18 to the curved surface portion 25 is set to 5 mm, for example. within a height range of equal to or greater than 3.5 mm and less than or equal to 7.5 mm in this embodiment. Moreover, an angle between the movable wall portion 22 and the rising peripheral wall portion 21 is set to 73 , for example, within an angular range of equal to or greater than 600 and less than or equal to 85 .
[0028]
As shown in FIGS. 2 and 4, a plurality of ribs 40 are radially disposed about the bottle axis 0 in the bottle wall portion 22. That is, the respective ribs 40 are disposed at uniform intervals in the bottle circumferential direction.
In the example shown in the drawings, the ribs 40 are configured such that a plurality of concave portions 40a depressed upward in the curved surface shapes intermittently and linearly extend along the bottle radial direction. In so doing, the ribs 40 have a wave form in a vertical cross-sectional view along the bottle radial direction.
[0029]
The respective concave portions 40a are formed into a same size and a same shape and are arranged at equal intervals along the bottle radial direction.
In addition, the respective positions, at which the plurality of concave portions 40a are disposed, in the bottle radial direction are the same in each of the plurality of ribs 40.
In addition, a concave portion 40a at the outermost position in the bottle radial = CA 02815354 2013-04-19 direction among the plurality of concave portions 40a in the respective ribs 40 is proximate to the curved surface portion 25 from the inner side of the bottle radial direction, and a concave portion 40a at the innermost position in the bottle radial direction is proximate to the depressed peripheral wall portion 23 from the outer side of the bottle radial direction.
[00301 The depressed peripheral wall portion 23 is coaxially disposed with the bottle axis 0 as shown in FIG 3, and is formed into a circular shape in the horizontal cross-sectional view such that the diameter thereof adually increases from the upper side to the lower side. A disc-shaped apex wall 24 which is coaxially an-anged with the bottle axis 0 is connected to the upper end portion of the depressed peripheral wall portion 23, and the depressed peripheral wall portion 23 and the apex wall 24 form a cylindrical shape with an apex as a whole.
The depressed peripheral wall portion 23 is formed into a curved surface shape which protrudes to the inner side of the bottle radial direction, and the upper end portion includes a curved wall portion 23a which is sequentially provided at the outer circumferential edge portion of the apex wall 24. The lower end portion of the curved wall portion 23a is sequentially provided at the inner end portion of the movable wall portion 22 in the bottle radial direction via the curved surface portion 26 which protrudes downward.
[0031]
If the inside of the bottle 1 configured as described above is depressurized, the movable wall portion 22 revolves upward about the curved surface portion 25 of the bottom wall portion 19 such that the movable wall portion 22 moves to lift the depressed peripheral wall portion 23 upward. That is, it is possible to absorb variations in the inner pressure (depressurization) in the bottle 1 by actively deforming the bottom wall portion 19 of the bottle 1 during depressurization.
[0032]
Incidentally, it is considered that the movement of the upper end portion of the rising peripheral portion 21 to the outer side of the bottle radial direction causes the movable wall portion 22 to revolve about the curved surface portion 25 which is a connecting portion with the rising peripheral portion 21 during depressurization.
Here, in the bottle 1 according to the embodiment, the rising peripheral wall portion 21 inclines to the inner side of the bottle radial direction at the inclination angle 01 with respect to the bottle axis 0 as the rising peripheral wall portion 21 approaches the curved surface portion 25, the height from the ground contact portion 18 to the curved surface portion 25 is set to the above height T, and further, the angle between the rising peripheral wall portion 21 and the movable wall portion 22 is set to the above angle 02.
[0033]
Therefore, it is considered that the upper end portion of the rising peripheral wall portion 21, which is the connecting portion with the movable wall portion 22, can easily and flexibly move in the bottle radial direction from the ground contact portion 18 as a based point, and therefore, the upper end portion can easily moves to the outer side of the bottle radial direction during the depressurization. Accordingly, it is possible to cause the movable wall portion 22 to sensitively follow the variations in the inner pressure in the bottle 1 and flexibly revolve and enhance the performance of absorbing depressurization.
In addition, since the movable wall portion 22 extends so as to gradually incline downward from the curved surface portion 25 as the connecting portion with the rising = CA 02815354 2013-04-19 peripheral wall portion 21 to the inner side of the bottle radial direction, it is easy to cause the movable wall portion 22 to revolve downward during filling of the bottle with a substance. Therefore, it is possible to enhance the depressurization absorbing capacity immediately after the filling by increasing a volume in the bottle 1 and to thereby further easily improve the performance of absorbing depressurization.
[0034]
In addition, since the plurality of ribs 40 are formed on the movable portion ofthe bottom wall portion 19, it is possible to increase a pressure receiving area by increasing the surface area of the movable wall portion 22 and to rapidly deform the movable wall portion 22 according to variations in the inner pressure in the bottle 1.
[0035]
The bottle 1 according to the embodiment is suitable for a bottle with a volume of 1 liter or less and with a ground contact diameter of 85 mm or less.
[0036]
In addition, the technical scope of the present invention is not limited to the embodiment, and various modifications can be made without departing from the gist of the present invention.
[0037]
For example, although the ribs 40 intermittently and radially extend in the above embodiment, the present invention is not limited thereto, and the ribs 40 may continuously extend or extend while curved. In addition, the design of the shape and the size of the concave portions 40a can be appropriately changed. Moreover, the ribs 40 are not essential and may not be provided.
[0038]
In addition, a concave and convex portion 41 may be fomied over the entire = CA 02815354 2013-04-19 circumference of the rising peripheral wall portion 21 as shown in FIGS. 5 and 6. In addition, the concave and convex portion 41 is configured by disposing a plurality of convex portions 41a formed into curved surface shapes which protrude to the inner side of the bottle radial direction at intervals in the bottle circumferential direction.
5 By forming the concave and convex portion 41 as described above, feeling of incongruity is not easily given when the bottom 14 ofthe bottle 1 filled with content is viewed since light which is incident on the rising peripheral wall portion 21 is diffusely reflected by the concave and convex portion 41 or the concave and convex portion 41 is also filled with the substance in the bottle 1, for example.
10 [0039]
Although the angle 02 between the rising peripheral wall portion 21 and the movable wall portion 22 is configured to be within an angular range of equal to or greater than 600 and less than or equal to 85 in the embodiment, the present invention is not limited to the angular range. For example, the movable wall portion 22 may be 15 appropriately changed so as to project in parallel with the bottle radial direction or incline upward, for example, or may be appropriately changed so as to be formed into a planer shape or a concave curved surface shape which is depressed upward.
However, it is preferable that the angle 02 between the rising peripheral wall portion 21 and the movable wall portion 22 be within the angular range of not equal to or great than 60 and less than or equal to 85 and that the movable wall portion 22 incline downward as in the embodiment. In so doing, the revolution property of the movable wall portion 22 is enhanced, and it is easy to improve the performance of absorbing depressurization.
[0040]
Although the rising peripheral wall portion 21 and the movable wall portion 22 are connected to each other via the curved surface portion 25 in the embodiment, a configuration is also applicable in which an annular concave portion which is depressed upward with respect to a virtual line extended to the outer side of the bottle radial direction along the line of the surface shape of the movable wall portion 22 is formed at the connecting portion and the movable wall portion 22 freely revolves about the annular concave portion. In such a case, it is possible to expect a high hinge effect by providing flexibility to the outer end portion of the movable wall portion 22 in the radial direction to thereby cause the movable wall portion 22 to further sensitively follow the variations in the inner pressure in the bottle 1 and flexibly deform the movable wall portion 22 and further improve the performance of absorbing depressurization in the bottle 1.
In addition, even in the case in which the annular concave groove is formed, it is preferable that the angle between the rising peripheral wall portion 21 and the movable wall portion 22, more specifically, the angle 02 between the rising peripheral wall portion 21 and the virtual line be within the angular range of equal to or greater than 60 and less than or equal to 85 .
[0041]
In addition, although each of the horizontal cross-sectional shapes of the shoulder portion 12, the body portion 13, and the bottom 14, which is perpendicular to the bottle axis 0, is a circular shape in the embodiment, the horizontal cross-sectional shape is not limited thereto and may be appropriately changed to a polygonal shape or the like, for example.
[0042]
In addition, the synthetic resin material forming the bottle 1 may be appropriately changed to polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof. Furthermore, the bottle 1 may be formed into a laminated structure with an intermediate layer as well as a single layer structure. In addition, examples of the intermediate layer include a layer formed of a resin material with a gas barrier property, a layer formed of a recycled tnaterial, a layer formed of a resin material with an oxygen absorption property, and the like.
[0043]
(Examples) Next, description will be given of an example of a test (analysis) for observing how a relationship between depressurization intensity (kPa) and depressurization absorbing volume (m1) changes when the inclination angle 01 of the rising peripheral wall portion 21, and the height T from the ground contact portion 18 to the curved surface portion 25 are respectively changed.
In addition, the test was performed using the bottle 1 shown in FIGS. 1 to 4, in which the plurality of ribs 40 were formed in the movable wall portion 22.
[0044]
The test was performed by preparing a total of four patterns, namely a first pattern with the inclination angle 01 of 5 and with the height T of 3.5 mm, a second pattern with the inclination angle 01 of 100 and with the height T of 3.5 mm, a third pattern with the inclination angle 01 of 15 and with the height I of 3.5 mm, and a comparison pattern with the inclination angle 01 of 20 and the height T of 3.5 mm.
[0045]
As a result, it was confirmed that a depressurization absorbing capacity increased in an initial stage in which an increase in the depressurization intensity was started in any of the four patterns. This is considered to be because the entire bottom wall portion 19 moved upward due to the depressurization in the bottle 1.
However, it was confirmed that the depressurization absorbing capacity steeply increased at later timing at which the depressurization intensity further increased and reached about 10 (kPa) in the first to third patterns. This is considered to be because the movable wall portion 22 smoothly revolved and inversely deformed and the depressed peripheral wall portion 23 was thus moved upward since the inclination angle 01 was within the angular range of equal to or greater than 0 and less than 200 and the height T
was in the height range of equal to or greater than 3.5 min and less than or equal to 7.5 mm.
On the other hand, the steep increase phenomenon of the depressurization absorbing capacity due to the inverse deformation of the movable wall portion 22 was not observed in the case of the comparison pattern even when the depressurization intensity was further increased.
[0046]
In addition, it was similarly confirmed that the depressurization absorbing capacity steeply increased at the timing at which the depressurization intensity reached about 10 (kPa) even when the height T was set to 5.0 mm instead of 3.5 mm and the inclination angle 01 was set to 5 , 10 , 15 , and 20 in the first to third patterns.
Furthermore, the same change was confirmed even when the height T was set to 7.5 mm and the inclination angle 01 was set to 5 , 10 , 15 , and 20 . In addition, the steep increase phenomenon of the depressurization absorbing capacity was observed in the above height range even when the inclination angle 01 was set to 0 .
However, there is a problem that it is difficult to shape the bottle if the inclination angle 01 is set to less than 0 (negative).
[0047]
Based on the above, it was confirmed that the movable wall portion 22 was flexibly deformed and the performance of absorbing depressurization was improved by setting the inclination angle 01 of the rising peripheral wall portion 22 within the angular range of equal to or greater than 00 to less than 200 and setting the height T
from the ground contact portion 18 to the curved surface portion 25 within the height range of equal to or greater than 3.5 inm to less than or equal to 7.5 mm.
[0048]
Hereinafter, a description will be given of a bottle according to a second embodiment of the present invention referring to FIGS. 7 to 9. In the description ofthe second embodiment, the same reference numerals as those in the first embodiment will be used for the same configuration as those in the first embodiment, and a description thereof will be omitted here.
[0049]
As shown in FIG 7, the bottom 140 of the bottle 10 according to the embodiment is formed into a cup shape and includes a heel portion 170 at which an upper end opening portion of the bottom 140 is connected to the lower end opening portion of the body portion 13 and a bottom wall portion 190 which blocks the lower end opening portion of the heel portion 170 and includes a ground contact portion 180 at the outer circumferential edge portion.
[0050]
In the heel portion 170, a heel lower end portion 270 which is connected to the ground contact portion 180 from the outer side of the bottle radial direction is formed to have a smaller diameter than the diameter of an upper heel portion 280 connected to the heel lower end portion 270 from the upper side.
Both the upper heel portion 280 and both end portions of the body portion 13 in the direction of the bottle axis 0 have the maximum outer diameter in the bottle 10.
[0051]
In addition, the diameter of a coupling part 290 between the heel lower end 5 portion 270 and the upper heel portion 280 is gradually reduced from the upper side to the lower side, and thus, the diameter of the heel lower end portion 270 is smaller than the diameter of the upper heel portion 280. A fourth annular concave groove 310 with approximately the same depth as that of the third annular concave groove 20 is continuously formed over the entire circumference of the upper heel portion 280.
10 [0052]
As shown in FIG 9, the bottom wall portion 190 includes a rising peripheral wall portion 210 connected to the ground contact portion 180 from the inner side of the bottle radial direction and extending upward, an annular movable wall portion projecting from the upper end portion ofthe rising peripheral wall portion 210 to the 15 inner side of the bottle radial direction, and a depressed peripheral wall portion 230 extending upward from the inner side of the movable wall portion 220 in the bottle radial direction.
[0053]
The ground contact portion 180 is in annular line contact, for example, with a
20 ground contact surface G. The diameter of the rising peripheral wall portion 210 is gradually reduced from the lower side to the upper side.
The movable wall portion 220 is formed into a curved surface shape which protrudes downward, and extends so as to gradually incline downward from the outer end portion connected to the rising peripheral wall portion 210 to the inner end portion connected to the depressed peripheral wall portion 230.
= CA 02815354 2013-04-19
The movable wall portion 220 is formed into a curved surface shape which protrudes downward, and extends so as to gradually incline downward from the outer end portion connected to the rising peripheral wall portion 210 to the inner end portion connected to the depressed peripheral wall portion 230.
= CA 02815354 2013-04-19
21 [0054]
In the embodiment, the movable wall portion 220 and the rising peripheral wall portion 210 are coupled to each other via a curved surface portion 250 which protrudes upward, and the movable wall portion 220 and the depressed peripheral wall portion 230 are coupled to each other via a curved surface portion 260 which protrudes downward.
Therefore, the curved surface portion 250 functions as an outer end portion of the movable wall portion 220, and the curved surface portion 260 functions as an inner end portion of the movable wall portion 220.
In addition, the movable wall portion 220 is designed to freely revolve about the curved surface portion 250, which is the outer end portion of the movable wall portion 220, so as to move the depressed peripheral wall portion 230 upward.
[0055]
In addition, the curved surface portion 250, which is the outer end portion of the movable wall portion 220, and the curbed surface portion 260, which is the inner end portion of the movable wall portion 220, are separate from the ground contact surface G
On this occasion, a height H1 from the ground contact surface G along which the ground contact portion 180 is in contact with the ground to the curve surface portion 260, which is the inner end portion of the movable wall portion 220, is set to equal to or greater than 2 inni which is 45% or less of a height H2 from the ground contact surface G
to the curved surface portion 250, which is the outer end portion ofthe movable wall portion 220.
[0056]
The depressed peripheral wall portion 230 is coaxially disposed with the bottle axis 0 and is formed into multiple stages such that the diameter thereof gradually increases from the upper side to the lower side. A disc-shaped apex wall 240 which is
In the embodiment, the movable wall portion 220 and the rising peripheral wall portion 210 are coupled to each other via a curved surface portion 250 which protrudes upward, and the movable wall portion 220 and the depressed peripheral wall portion 230 are coupled to each other via a curved surface portion 260 which protrudes downward.
Therefore, the curved surface portion 250 functions as an outer end portion of the movable wall portion 220, and the curved surface portion 260 functions as an inner end portion of the movable wall portion 220.
In addition, the movable wall portion 220 is designed to freely revolve about the curved surface portion 250, which is the outer end portion of the movable wall portion 220, so as to move the depressed peripheral wall portion 230 upward.
[0055]
In addition, the curved surface portion 250, which is the outer end portion of the movable wall portion 220, and the curbed surface portion 260, which is the inner end portion of the movable wall portion 220, are separate from the ground contact surface G
On this occasion, a height H1 from the ground contact surface G along which the ground contact portion 180 is in contact with the ground to the curve surface portion 260, which is the inner end portion of the movable wall portion 220, is set to equal to or greater than 2 inni which is 45% or less of a height H2 from the ground contact surface G
to the curved surface portion 250, which is the outer end portion ofthe movable wall portion 220.
[0056]
The depressed peripheral wall portion 230 is coaxially disposed with the bottle axis 0 and is formed into multiple stages such that the diameter thereof gradually increases from the upper side to the lower side. A disc-shaped apex wall 240 which is
22 coaxially arranged with the bottle axis 0 is connected to the upper end portion of the depressed peripheral wall portion 230, and the depressed peripheral wall portion 230 and the apex wall 240 form a cylindrical shape with an apex as a whole.
[0057]
The depressed peripheral wall portion 230 according to the embodiment includes a lower cylindrical portion 230a with a diameter which gradually decreases from the inner end portion of the movable wall portion 220 in the bottle radial direction to the upper side, an upper cylindrical portion 230b, which includes an upper end potion coupled to the outer circumferential edge portion of the apex wall 240, the diameter of which gradually increases when approaching downward, which is formed into a curbed surface shape protruding downward, and a stage portion 230c which couples both the cylindrical portions 230a and 230b, and the depressed peripheral wall portion 230 is formed into a two-stage cylindrical shape.
[00581 The lower cylindrical portion 230a is formed into a circular shape in the horizontal cross-sectional view and is coupled to the movable wall portion 220 via the curved surface portion 260. Projecting parts 230d which project to the inner side of the bottle radial direction are formed in the upper cylindrical portion 230b. The projecting portions 230d arc formed over the entire length of the upper cylindrical portion 230b in the direction of the bottle axis 0 other than the upper end portion, and a plurality of projecting portions 230d are sequentially formed in the bottle circumferential direction as shown in FIG. 8.
In the example shown in the drawing, projecting portions 230d which are adjacent in the bottle circumferential direction are arranged at intervals in the bottle circumferential direction.
[0057]
The depressed peripheral wall portion 230 according to the embodiment includes a lower cylindrical portion 230a with a diameter which gradually decreases from the inner end portion of the movable wall portion 220 in the bottle radial direction to the upper side, an upper cylindrical portion 230b, which includes an upper end potion coupled to the outer circumferential edge portion of the apex wall 240, the diameter of which gradually increases when approaching downward, which is formed into a curbed surface shape protruding downward, and a stage portion 230c which couples both the cylindrical portions 230a and 230b, and the depressed peripheral wall portion 230 is formed into a two-stage cylindrical shape.
[00581 The lower cylindrical portion 230a is formed into a circular shape in the horizontal cross-sectional view and is coupled to the movable wall portion 220 via the curved surface portion 260. Projecting parts 230d which project to the inner side of the bottle radial direction are formed in the upper cylindrical portion 230b. The projecting portions 230d arc formed over the entire length of the upper cylindrical portion 230b in the direction of the bottle axis 0 other than the upper end portion, and a plurality of projecting portions 230d are sequentially formed in the bottle circumferential direction as shown in FIG. 8.
In the example shown in the drawing, projecting portions 230d which are adjacent in the bottle circumferential direction are arranged at intervals in the bottle circumferential direction.
23 [0059]
In addition, the horizontal cross-sectional shape of the upper cylindrical portion 230b is deformed from a polygonal shape to a circular shape from the lower side to the upper side by forming the projecting portions 230d, and the horizontal cross-sectional shape of the upper cylindrical portion 230b at the upper end portion is a circular shape.
At a part at which the horizontal cross-sectional shape is a polygonal shape in the upper cylindrical portion 230b, the projecting portions 230d correspond to sides of the polygonal shape, and interposed parts 230e positioned between adjacent projecting portions 230d in the bottom circumferential direction correspond to comers of the polygonal shape.
Although a case in which the polygonal shape is a substantially equilateral triangle is exemplified in the drawing, the present invention is not limited to the case.
[0060]
If the inside of the bottle 10 configured as described above is depressurized, the movable wall portion 220 revolves upward about the curved surface portion 250 such that the movable wall portion 220 moves to lift the depressed peripheral wall portion 230 upward. That is, it is possible to absorb variations in the inner pressure (depressurization) in the bottle 10 by actively deforming the bottom wall portion 190 of the bottle 10 during the depressurization.
[0061]
Particularly, since the movable wall portion 220 extends so as to gradually incline downward from the curved surface portion 250, which is the outer end portion of the movable wall portion 220, to the curved surface portion 260, which is the inner end portion of the movable wall portion 220, and the height H1 from the ground contact surface G to the curved surface portion 260, which is the inner end portion of the = CA 02815354 2013-04-19
In addition, the horizontal cross-sectional shape of the upper cylindrical portion 230b is deformed from a polygonal shape to a circular shape from the lower side to the upper side by forming the projecting portions 230d, and the horizontal cross-sectional shape of the upper cylindrical portion 230b at the upper end portion is a circular shape.
At a part at which the horizontal cross-sectional shape is a polygonal shape in the upper cylindrical portion 230b, the projecting portions 230d correspond to sides of the polygonal shape, and interposed parts 230e positioned between adjacent projecting portions 230d in the bottom circumferential direction correspond to comers of the polygonal shape.
Although a case in which the polygonal shape is a substantially equilateral triangle is exemplified in the drawing, the present invention is not limited to the case.
[0060]
If the inside of the bottle 10 configured as described above is depressurized, the movable wall portion 220 revolves upward about the curved surface portion 250 such that the movable wall portion 220 moves to lift the depressed peripheral wall portion 230 upward. That is, it is possible to absorb variations in the inner pressure (depressurization) in the bottle 10 by actively deforming the bottom wall portion 190 of the bottle 10 during the depressurization.
[0061]
Particularly, since the movable wall portion 220 extends so as to gradually incline downward from the curved surface portion 250, which is the outer end portion of the movable wall portion 220, to the curved surface portion 260, which is the inner end portion of the movable wall portion 220, and the height H1 from the ground contact surface G to the curved surface portion 260, which is the inner end portion of the = CA 02815354 2013-04-19
24 movable wall portion 220, is 45% or less of the height 112 from the ground contact surface G to the curved surface portion 250, which is the outer end portion of the movable wall portion 220, to secure a large height difference, it is easy to cause the movable wall portion 220 to revolve downward during filling of content.
Therefore, it is possible to enhance the depressurization absorbing capacity immediately after the filling by increasing the volume of the bottle 10 and to thereby improve the performance of absorbing depressurization.
[0062]
Furthermore, since the curved surface portion 260, which is the inner end portion of the movable wall portion 220, is separate from the ground contact surface G
by equal to or greater than 2 mm, the curved surface portion 260 does not easily project further downward than the ground contact portion 180 when the movable wall portion 220 revolves downward during filling of content, and contact with the ground contact surface G can be easily avoided. Accordingly, it is possible to reliably perform the filling operation while suppressing the projection of the curved surface portion 260 even in the case of a high-temperature filling.
[0063]
Although a case in which the curved surface portion 260, which is the inner end portion of the movable wall portion 220, is the lowermost end potion which is the closest to the ground contact surface G in the movable wall portion 220 is exemplified in the embodiment, a case in which a substantially intermediate part of the bottle radial direction corresponds to the lowermost end portion can be also considered depending on the shape of the movable wall portion 220. In such a case, the height to the lowermost portion is H1.
[0064]
In addition, the bottle 10 according to the embodiment is suitable for a bottle with a volume of 1 liter or less and with a ground contact diameter of 85 inm or less, which is used when filling the bottle with the substance at 75 C or lower (more specifically, a temperature range from 60 C to 75 C).
5 [0065]
In addition, the technical scope of the present invention is not limited to the embodiment, and various modifications can be made without departing from the gist of the present invention.
[0066]
10 As shown in FIGS. 10 and 11, a plurality of ribs 400 may be radially formed about the bottle axis 0 in the bottle wall portion 220 in the embodiment. That is, the respective ribs 400 are disposed at uniform intervals in the bottle circumferential direction.
In the example shown in the drawings, the ribs 400 are configured such that a 15 plurality of concave portions 400a depressed upward in the curved surface shapes intermittently and linearly extend along the bottle radial direction and the ribs 400 are formed into a wave form in a vertical cross-sectional view along the bottle radial direction. In addition, the respective concave portions 400a are formed into the same size and the same shape and are arranged at equal intervals along the bottle radial 20 direction. In addition, the respective positions, at which the plurality of concave portions 400a are disposed, in the bottle radial direction are the same in each of the plurality of ribs 400.
[0067]
By forming the plurality of ribs 400 in the movable portion 220 as described
Therefore, it is possible to enhance the depressurization absorbing capacity immediately after the filling by increasing the volume of the bottle 10 and to thereby improve the performance of absorbing depressurization.
[0062]
Furthermore, since the curved surface portion 260, which is the inner end portion of the movable wall portion 220, is separate from the ground contact surface G
by equal to or greater than 2 mm, the curved surface portion 260 does not easily project further downward than the ground contact portion 180 when the movable wall portion 220 revolves downward during filling of content, and contact with the ground contact surface G can be easily avoided. Accordingly, it is possible to reliably perform the filling operation while suppressing the projection of the curved surface portion 260 even in the case of a high-temperature filling.
[0063]
Although a case in which the curved surface portion 260, which is the inner end portion of the movable wall portion 220, is the lowermost end potion which is the closest to the ground contact surface G in the movable wall portion 220 is exemplified in the embodiment, a case in which a substantially intermediate part of the bottle radial direction corresponds to the lowermost end portion can be also considered depending on the shape of the movable wall portion 220. In such a case, the height to the lowermost portion is H1.
[0064]
In addition, the bottle 10 according to the embodiment is suitable for a bottle with a volume of 1 liter or less and with a ground contact diameter of 85 inm or less, which is used when filling the bottle with the substance at 75 C or lower (more specifically, a temperature range from 60 C to 75 C).
5 [0065]
In addition, the technical scope of the present invention is not limited to the embodiment, and various modifications can be made without departing from the gist of the present invention.
[0066]
10 As shown in FIGS. 10 and 11, a plurality of ribs 400 may be radially formed about the bottle axis 0 in the bottle wall portion 220 in the embodiment. That is, the respective ribs 400 are disposed at uniform intervals in the bottle circumferential direction.
In the example shown in the drawings, the ribs 400 are configured such that a 15 plurality of concave portions 400a depressed upward in the curved surface shapes intermittently and linearly extend along the bottle radial direction and the ribs 400 are formed into a wave form in a vertical cross-sectional view along the bottle radial direction. In addition, the respective concave portions 400a are formed into the same size and the same shape and are arranged at equal intervals along the bottle radial 20 direction. In addition, the respective positions, at which the plurality of concave portions 400a are disposed, in the bottle radial direction are the same in each of the plurality of ribs 400.
[0067]
By forming the plurality of ribs 400 in the movable portion 220 as described
25 above, it is possible to increase a pressure receiving area by increasing a surface area of = CA 02815354 2013-04-19
26 the movable wall portion 220 and to thereby rapidly deform the movable wall portion 220 according to variations in the inner pressure in the bottle 10.
[0068]
Furthermore, a concave and convex portion 410 may be formed over the entire circumference ofthe rising peripheral wall portion 210 as shown in FIGS. 10 and 11. In addition, the concave and convex portion 410 is configured by disposing a plurality of convex portions 410a formed into curved surface shapes which protrude to the inner side of the bottle radial direction at intervals in the bottle circumferential direction.
By forming the concave and convex portion 410 as described above, feeling of incongruity is not easily given when the bottom 140 of the bottle 10 filled with content is viewed since light which is incident on the rising peripheral wall portion 210 is diffusely reflected by the concave and convex portion 410 or the concave and convex portion 410 is also filled with the substance in the bottle 10, for example.
[0069]
hi the embodiment, the rising peripheral wall portion 210 may be appropriately changed so as to extend in parallel with the direction of the bottle axis 0, for example.
In addition, the movable wall portion 220 may be appropriately changed so as to be formed into a planar shape or a concave curved surface shape which is depressed upward, for example.
[0070]
Although the upper cylindrical portion 230b is formed into a curved surface shape which protrudes downward in this embodiment, the present invention is not limited to this shape.
In addition, the adjacent projecting portions 230d in the bottle circumferential direction are arranged at intervals in the bottle circumferential direction in this =
[0068]
Furthermore, a concave and convex portion 410 may be formed over the entire circumference ofthe rising peripheral wall portion 210 as shown in FIGS. 10 and 11. In addition, the concave and convex portion 410 is configured by disposing a plurality of convex portions 410a formed into curved surface shapes which protrude to the inner side of the bottle radial direction at intervals in the bottle circumferential direction.
By forming the concave and convex portion 410 as described above, feeling of incongruity is not easily given when the bottom 140 of the bottle 10 filled with content is viewed since light which is incident on the rising peripheral wall portion 210 is diffusely reflected by the concave and convex portion 410 or the concave and convex portion 410 is also filled with the substance in the bottle 10, for example.
[0069]
hi the embodiment, the rising peripheral wall portion 210 may be appropriately changed so as to extend in parallel with the direction of the bottle axis 0, for example.
In addition, the movable wall portion 220 may be appropriately changed so as to be formed into a planar shape or a concave curved surface shape which is depressed upward, for example.
[0070]
Although the upper cylindrical portion 230b is formed into a curved surface shape which protrudes downward in this embodiment, the present invention is not limited to this shape.
In addition, the adjacent projecting portions 230d in the bottle circumferential direction are arranged at intervals in the bottle circumferential direction in this =
27 embodiment, however, the present invention is not limited thereto, and the projecting portions 230d may be arranged without any interval in the bottle circumferential direction and directly coupled to each other. In such a case, the horizontal cross-sectional shape of the upper cylindrical portion 230b on a part where the projecting portions 230d are arranged may be a circular shape, or the horizontal cross-sectional shape of the upper cylindrical portion 230b may be a circular shape over the entire length in the direction of the bottle axis O.
In addition, the projecting portions 230d are not essential and may not be provided. Furthermore, although the depressed peripheral wall portion 230 is formed into a two-stage cylindrical shape, the depressed peripheral wall portion 230 may be formed into a cylindrical shape with three or more stages or may not be formed into a multi-stage shape.
[0071]
In addition, the synthetic resin material forming the bottle 10 may be appropriately changed to polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof. Furthermore, the bottle 10 may be formed into a laminated structure with an intermediate layer as well as a single layer structure. In addition, examples of the intermediate layer include a layer formed of a resin material with a gas barrier property, a layer formed of a recycled material, a layer formed of a resin material with an oxygen absorption property, and the like.
[0072]
In addition, although each of the horizontal cross-sectional shapes of the shoulder portion 12, the body portion 13, and the bottom 14, which is perpendicular to the bottle axis 0, is a circular shape in this embodiment, the horizontal cross-sectional shape is not limited thereto and may be appropriately changed to a polygonal shape or the = CA 02815354 2013-04-19
In addition, the projecting portions 230d are not essential and may not be provided. Furthermore, although the depressed peripheral wall portion 230 is formed into a two-stage cylindrical shape, the depressed peripheral wall portion 230 may be formed into a cylindrical shape with three or more stages or may not be formed into a multi-stage shape.
[0071]
In addition, the synthetic resin material forming the bottle 10 may be appropriately changed to polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof. Furthermore, the bottle 10 may be formed into a laminated structure with an intermediate layer as well as a single layer structure. In addition, examples of the intermediate layer include a layer formed of a resin material with a gas barrier property, a layer formed of a recycled material, a layer formed of a resin material with an oxygen absorption property, and the like.
[0072]
In addition, although each of the horizontal cross-sectional shapes of the shoulder portion 12, the body portion 13, and the bottom 14, which is perpendicular to the bottle axis 0, is a circular shape in this embodiment, the horizontal cross-sectional shape is not limited thereto and may be appropriately changed to a polygonal shape or the = CA 02815354 2013-04-19
28 like, for example.
Industrial Applicability [0073]
According to the bottle of the embodiments of the present invention, it is possible to improve the performance of absorbing depressurization in the bottle.
Reference Signs List [0074]
0: BOTTLE AXIS
T: HEIGHT FROM GROUND CONTACT PORTION TO CURVED SURFACE
PORTION
01: INCLINATION ANGLE OF RISING PERIPHERAL WALL PORTION
02: ANGLE BETWEEN MOVABLE WALL PORTION AND RISING
PERIPHERAL WALL PORTION
1: BOTTLE
12: SHOULDER PORTION
18: GROUND CONTACT PORTION
19: BOTTOM WALL PORTION OF BOTTOM
21: RISING PERIPHERAL WALL PORTION
22: MOVABLE WALL PORTION
23: DEPRESSED PERIPHERAL WALL PORTION
25: CURVED SURFACE PORTION (CONNECTING PORTION BETWEEN
MOVABLE WALL PORTION AND RISING PERIPHERAL WALL PORTION) 10: BOTTLE
140: BOTTOM
180: GROUND CONTACT PORTION
Industrial Applicability [0073]
According to the bottle of the embodiments of the present invention, it is possible to improve the performance of absorbing depressurization in the bottle.
Reference Signs List [0074]
0: BOTTLE AXIS
T: HEIGHT FROM GROUND CONTACT PORTION TO CURVED SURFACE
PORTION
01: INCLINATION ANGLE OF RISING PERIPHERAL WALL PORTION
02: ANGLE BETWEEN MOVABLE WALL PORTION AND RISING
PERIPHERAL WALL PORTION
1: BOTTLE
12: SHOULDER PORTION
18: GROUND CONTACT PORTION
19: BOTTOM WALL PORTION OF BOTTOM
21: RISING PERIPHERAL WALL PORTION
22: MOVABLE WALL PORTION
23: DEPRESSED PERIPHERAL WALL PORTION
25: CURVED SURFACE PORTION (CONNECTING PORTION BETWEEN
MOVABLE WALL PORTION AND RISING PERIPHERAL WALL PORTION) 10: BOTTLE
140: BOTTOM
180: GROUND CONTACT PORTION
29 190: BOTTOM WALL PORTION OF BOTTOM
210: RISING PERIPIIERAL WALL PORTION
220: MOVABLE WALL PORTION
230: DEPRESSED PERIPHERAL WALL PORTION
250: CURVED SURFACE PORTION (OUTER END PORTION OF
MOVABLE WALL PORTION) 260: CURVED SURFACE PORTION (INNER END PORTION OF MOVABLE
WALL PORTION)
210: RISING PERIPIIERAL WALL PORTION
220: MOVABLE WALL PORTION
230: DEPRESSED PERIPHERAL WALL PORTION
250: CURVED SURFACE PORTION (OUTER END PORTION OF
MOVABLE WALL PORTION) 260: CURVED SURFACE PORTION (INNER END PORTION OF MOVABLE
WALL PORTION)
Claims (3)
1. A bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom comprising:
a ground contact portion which is positioned at an outer circumferential edge portion;
a rising peripheral wall portion which is connected to the ground contact portion and extends upward and inward towards a central longitudinal axis of the bottle;
an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion towards the central longitudinal axis of the bottle; and a depressed peripheral wall portion which extends upward and inward from an inner end portion of the movable wall portion, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, the upper end portion of the rising peripheral wall portion moves outwardly when the movable wall portion revolves about the connecting portion, the rising peripheral wall portion extends inward towards the central longitudinal axis of the bottle so that a diameter of the rising peripheral wall portion is gradually reduced from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle equal to or greater than 0° and less than 20° with respect to the central longitudinal axis of the bottle, a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 mm, the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion toward the central longitudinal axis of the bottle, and an angle between the movable wall portion and the rising peripheral wall portion is equal to or greater than 60° and less than or equal to 85°.
a ground contact portion which is positioned at an outer circumferential edge portion;
a rising peripheral wall portion which is connected to the ground contact portion and extends upward and inward towards a central longitudinal axis of the bottle;
an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion towards the central longitudinal axis of the bottle; and a depressed peripheral wall portion which extends upward and inward from an inner end portion of the movable wall portion, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, the upper end portion of the rising peripheral wall portion moves outwardly when the movable wall portion revolves about the connecting portion, the rising peripheral wall portion extends inward towards the central longitudinal axis of the bottle so that a diameter of the rising peripheral wall portion is gradually reduced from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle equal to or greater than 0° and less than 20° with respect to the central longitudinal axis of the bottle, a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 mm, the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion toward the central longitudinal axis of the bottle, and an angle between the movable wall portion and the rising peripheral wall portion is equal to or greater than 60° and less than or equal to 85°.
2. The bottle according to Claim 1, wherein the movable wall portion extends so as to gradually incline downward from an outer end portion connected to the rising peripheral wall portion to an inner end portion connected to the depressed peripheral wall portion, and a height from the ground contact portion to the inner end portion of the movable wall portion is 45% or less of a height from the ground contact portion to the outer end portion of the movable wall portion.
3. The bottle according to Claim 2, wherein a height of the inner end potion of the movable wall portion from the ground contact portion is equal to or greater than 2 mm.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010240945A JP2012091827A (en) | 2010-10-27 | 2010-10-27 | Bottle |
| JP2010-240945 | 2010-10-27 | ||
| JP2010264169A JP5886521B2 (en) | 2010-11-26 | 2010-11-26 | Bottle |
| JP2010-264169 | 2010-11-26 | ||
| PCT/JP2011/074578 WO2012057158A1 (en) | 2010-10-27 | 2011-10-25 | Bottle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2815354A1 CA2815354A1 (en) | 2012-05-03 |
| CA2815354C true CA2815354C (en) | 2018-03-27 |
Family
ID=45993864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2815354A Active CA2815354C (en) | 2010-10-27 | 2011-10-25 | Bottle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130206719A1 (en) |
| AU (1) | AU2011321522B2 (en) |
| CA (1) | CA2815354C (en) |
| TW (1) | TWI576293B (en) |
| WO (1) | WO2012057158A1 (en) |
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|---|---|---|---|---|
| JP5501184B2 (en) * | 2010-09-30 | 2014-05-21 | 株式会社吉野工業所 | Bottle |
| TWI603893B (en) * | 2011-07-26 | 2017-11-01 | 吉野工業所股份有限公司 | Bottle |
| USD755636S1 (en) * | 2014-07-11 | 2016-05-10 | Niagara Bottling, Llc | Short swirl bell bottle with straight ribs |
| US10518924B2 (en) * | 2014-08-21 | 2019-12-31 | Amcor Rigid Plastics Usa, Llc | Container base including hemispherical actuating diaphragm |
| USD908502S1 (en) * | 2018-10-09 | 2021-01-26 | Société des Produits Nestlé S.A. | Bottle |
| USD910448S1 (en) | 2019-09-24 | 2021-02-16 | Abbott Laboratories | Bottle |
| USD916593S1 (en) * | 2020-01-31 | 2021-04-20 | Amcor Rigid Packaging Usa, Llc | Container |
| USD906114S1 (en) * | 2020-01-31 | 2020-12-29 | Amcor Rigid Packaging Usa, Llc | Container |
| USD1035449S1 (en) * | 2021-05-10 | 2024-07-16 | Monster Energy Company | Bottle |
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| JPS5325186A (en) * | 1976-08-20 | 1978-03-08 | Daiwa Can Co Ltd | Metallic can for drink containing carbon dioxide or the like |
| US5730314A (en) * | 1995-05-26 | 1998-03-24 | Anheuser-Busch Incorporated | Controlled growth can with two configurations |
| US6176382B1 (en) * | 1998-10-14 | 2001-01-23 | American National Can Company | Plastic container having base with annular wall and method of making the same |
| US7451886B2 (en) * | 2003-05-23 | 2008-11-18 | Amcor Limited | Container base structure responsive to vacuum related forces |
| US8276774B2 (en) * | 2003-05-23 | 2012-10-02 | Amcor Limited | Container base structure responsive to vacuum related forces |
| US7150372B2 (en) * | 2003-05-23 | 2006-12-19 | Amcor Limited | Container base structure responsive to vacuum related forces |
| FR2919579B1 (en) * | 2007-07-30 | 2011-06-17 | Sidel Participations | CONTAINER COMPRISING A BACKGROUND WITH A DEFORMABLE MEMBRANE. |
| JP2009154943A (en) * | 2007-12-27 | 2009-07-16 | Hokkai Can Co Ltd | Synthetic resin bottle |
-
2011
- 2011-10-25 AU AU2011321522A patent/AU2011321522B2/en active Active
- 2011-10-25 WO PCT/JP2011/074578 patent/WO2012057158A1/en active Application Filing
- 2011-10-25 US US13/880,241 patent/US20130206719A1/en not_active Abandoned
- 2011-10-25 CA CA2815354A patent/CA2815354C/en active Active
- 2011-10-26 TW TW100138953A patent/TWI576293B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012057158A1 (en) | 2012-05-03 |
| TW201242855A (en) | 2012-11-01 |
| CA2815354A1 (en) | 2012-05-03 |
| AU2011321522B2 (en) | 2016-03-10 |
| AU2011321522A1 (en) | 2013-05-30 |
| TWI576293B (en) | 2017-04-01 |
| US20130206719A1 (en) | 2013-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20160517 |