WO1994005555A1 - Container - Google Patents

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Publication number
WO1994005555A1
WO1994005555A1 PCT/JP1993/001225 JP9301225W WO9405555A1 WO 1994005555 A1 WO1994005555 A1 WO 1994005555A1 JP 9301225 W JP9301225 W JP 9301225W WO 9405555 A1 WO9405555 A1 WO 9405555A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
bellows
deformation
opening
concave
Prior art date
Application number
PCT/JP1993/001225
Other languages
French (fr)
Japanese (ja)
Inventor
Makoto Nishimura
Original Assignee
N-Tech Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by N-Tech Co., Ltd. filed Critical N-Tech Co., Ltd.
Publication of WO1994005555A1 publication Critical patent/WO1994005555A1/en

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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
    • 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
    • B65D1/0292—Foldable bottles
    • 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
    • B65D1/12—Cans, casks, barrels, or drums
    • B65D1/14—Cans, casks, barrels, or drums characterised by shape
    • B65D1/16—Cans, casks, barrels, or drums characterised by shape of curved cross-section, e.g. cylindrical
    • B65D1/165—Cylindrical cans

Definitions

  • the present invention relates to a container, and more particularly, to a body part formed in a bellows shape, and after the contents are used, the bellows-shaped body part can be reduced and discarded. It relates to containers such as metal cans and resin pet bottles.
  • the container in which a bellows such as a corrugation or a spiral is formed in the body, the container itself can be reduced and deformed by the bellows.
  • the strength of the body of the container is reduced.For example, when heating or cooling the contents, heat is applied to the sealed container.
  • the drawback is that the container body expands and contracts when transporting the beverage with internal pressure expansion, and when the container is unnecessarily used except when discarded, such as when the container is unsealed. is there.
  • Such deformation of the container other than at the time of disposal significantly reduces the commercial value of the container itself, and has been implemented in spite of various proposals for containers that shrink and deform in the past. That is not the case.
  • the material forming the body portion is resin
  • the reduction ratio is reduced by the restoring force of the resin.
  • An object of the present invention is to easily reduce and deform by hand or the like without using special equipment at the time of disposal or the like when desired, and to change heat, carbon dioxide, etc., except when desired.
  • An object of the present invention is to provide a container which does not cause deformation or the like due to internal pressure expansion or the like due to the internal pressure.
  • Another object of the present invention is to provide a container in which the reduction ratio does not decrease over time after the reduction deformation at the time of disposal or the like.
  • FIG. 1 is a perspective view showing a beverage can as an example of the container of the present invention.
  • Fig. 2 is an enlarged view showing the protrusions and depressions as deformation resistance parts.
  • FIG. 3 is a perspective view showing the protruding part and the concave part as the deformation resistance part.
  • FIG. 4 is a side view showing a protruding portion and a concave portion as deformation resistance portions.
  • FIG. 5 is a perspective view showing a state in which the beverage can is reduced.
  • FIG. 6 is a perspective view showing another embodiment of the beverage can.
  • FIG. 7 is a front view showing a jet bottle as another example of the container of the present invention.
  • an opening there are provided: an opening; a lid for closing the opening; and a bellows portion formed by alternately providing a groove-shaped concave portion extending around a body portion and a convex portion protruding relatively to the concave portion.
  • a part of the concave portion and a part of the convex portion are used for compressing the container.
  • reference numeral 10 denotes a metal beverage can, which closes a body 13 having a bellows portion 14 and an opening 11 provided on the upper surface (see FIG. 5). It consists of the lid 1 and 2.
  • the bellows portion 14 falls into a triangular cross-section from the trunk slope (indicated by the broken line s), and protrudes relatively to the groove-shaped recess 15 surrounding the body 13 and the recess 15.
  • the annular convex portions 16 are formed so as to be alternately continuous in the longitudinal axis direction of the can 10.
  • each recess 15 In addition to being provided with a projection 17 as a deformation resistance portion protruding inward, each projection 16 is provided with a depression 18 as a deformation resistance portion which is depressed inward. I have. These are arranged on the bellows portion 14 so as to be linear in the longitudinal axis direction, and are provided in three rows at intervals of 120 ° in the circumferential direction of the body portion 13.
  • the projecting portion 17 is formed by joining two small triangles 17a and 17b at an acute angle with a common base 19 as a fold, and each vertex 17a ', 17 b and protrude in a shape that matches the valley fold 15 ′ of the recess 15.
  • the concave portion 18 has the same shape as the protruding portion 17, is concave from the mountain fold 16 ′ of the convex portion 16, and has a vertical fold 20. In this case, the vertical folds (19, 20) may be curved instead of being straight.
  • the projecting portion 17 and the recessed portion 18 have two small triangular shapes with the longitudinal folds 19, 20 as pivots when the bellows 14 is to expand or contract in the longitudinal axis direction. It resists the bending of the concave and convex portions 15 and 16 from the valley fold 15 and the mountain fold 16 and reinforces the body strength of the bellows 14 in the longitudinal axis direction. For example, when heating or cooling the contents sealed in a closed state by the lid 11, the body strength prevents the bellows 14 from expanding and contracting due to a change in the internal pressure, thereby changing the shape of the can 10. Maintained with sufficient strength not to hinder reduced deformation of can 10 (Fig. 5) by hand or foot compression in the longitudinal direction when desired, such as after drinking the contents for drinking.
  • the strength is such that it can be reduced and deformed by a force of 5 to 60 kg.
  • the shape and size of the protrusion 17 and the recessed part 18 can be appropriately selected according to the material and thickness of the body 13.
  • Such projections 17 and depressions 18 can be formed by using a mold that can be formed at the same time as forming the bellows 14 by compressing the flat metal plate. Can be done.
  • the protruding portion 17 and the recessed portion 18 are irregularly deformed by compression in the longitudinal axis direction so that the original shape is not restored after the contraction deformation.
  • FIG. 6 shows another embodiment in which the shape of the bellows portion 14, the projecting portion 17 and the depression portion 18 in the can 10 is different, and the bellows portion 64 of the can 60 has a spiral shape. It is formed in a shape.
  • a concave portion 65 in the bellows portion 64 has a hemispherical protrusion 67 on the convex portion 66, and a hemispherical concave portion 68 on the convex portion 66, as shown in FIG. Are arranged in a line. Also in this case, it is desirable in terms of strength to provide at least three protruding portions 67 and recessed portions 68 at the same interval on each circumference of the body portion 63. These uneven portions 65 and 66 resist the elastic deformation of the bellows portion 64 so as to maintain a hemispherical shape, and the longitudinal compression during disposal of the can 60, Body strength that does not hinder reduction Having.
  • reference numeral 70 denotes a resin-made pet bottle.
  • the pet bottle 70 has a body portion 73 having a bellows portion 74, and a lid 7 for closing an opening (not shown). It consists of 2 and.
  • the bellows portion 74 is the same as the bellows portion 14 shown in FIG. 1 and includes an annular concave portion 75 and a convex portion 76 that are alternately continuous in the longitudinal axis direction.
  • a linear deformation resistance portion 77 is provided so as to cross the concave portion 75 and the convex portion 76 in the longitudinal axis direction.
  • the three deformation resistance portions 77 are provided at intervals of 120 ° in the circumferential direction of the body portion 73, and the body strength of the bellows portion 74 in the longitudinal axis direction is reduced by the protrusions 17 and the depressions in FIG. Reinforced as in Part 18.
  • the thickness of the deformation resistance portion 77 is such that it resists the expansion and contraction deformation of the bellows portion 74 so as to maintain its shape, and depends on the material of the pet bottle.
  • the bottle 70 is discarded, it can be appropriately selected so as to have a body strength that does not hinder contraction deformation in the longitudinal axis compression.
  • the pet bottle 70 which is usually made of resin, has a restoring force against the compression of the bellows portion 74, but when the uneven portions 75, 76 are reduced in deformation, the deformation resistance portion 77 is irregularly deformed. Therefore, the aforementioned restoring force is reduced. After the pet bottle 70 is compressed, the internal force is restrained by the lid 72, so that the restoring force can be surely eliminated.
  • the container includes a plastic deformed container, a prismatic container, and the like
  • the bellows portion includes a cross-sectional trapezoidal shape or a curved uneven portion. Waves in the circumferential direction of objects and torso. Also includes those formed to hit the turn.
  • deformation The shape, number of installations, locations, and the like of the resistance portion are not limited to those described above, but may be appropriately set depending on the material of the container, the shape of the bellows, and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

A container includes: an opening; a lid for closing the opening; and a bellows portion, on which groove-shaped concave portions extending over the circumference of a body portion and convex portions projecting relatively to the concave portions are provided alternately. The container can be shrunk by compressing the bellows portion in a state where the above-described lid is removed from the opening. The container is provided at some part of the concave portions and some part of the convex portions thereof with a deformation-resistant portion for preventing the bellows portion from being deformed at the time other than when compression is required and not preventing the container from being shrunk due to the compression. Due to the presence of the above-described deformation-resistant portion, the decrease in the strength of the body portion due to the formation of the bellows portion is reinforced and the container can be practically used.

Description

明 細 書  Specification
容器  Container
技術分野 Technical field
本発明は容器に関 し、 更に詳細には、 胴体部を蛇腹状に形 成 し、 内容物を使用 に供 した後、 蛇腹状に形成した胴体部を 縮小 して廃棄する こ と ができ る金属製の缶、 樹脂製のペッ ト ボ 卜ル等の容器に関する。  The present invention relates to a container, and more particularly, to a body part formed in a bellows shape, and after the contents are used, the bellows-shaped body part can be reduced and discarded. It relates to containers such as metal cans and resin pet bottles.
背景技術 Background art
従来よ り油類、 飲料類、 調味料類、 石油精製物、 柑橘類等 の液状物又は固形物等を保持するために種々 の容器が使用さ れている 。 例えば金属製の缶、 樹脂製のペッ トボ トル等が主 に利用さ れてお り 、 このよ う な容器の大部分は、 内容物使用 後に廃棄されている。 しかしながら、 金属製又は樹脂製の容 器では、 廃棄に際して容器形状を容易に縮小変形させる こ と が困難である ため、 近年の容器需要の増大に伴い、 廃棄場所 の確保が問題視されている。  Conventionally, various containers have been used to hold liquids or solids such as oils, beverages, seasonings, refined petroleum products, and citrus fruits. For example, metal cans and resin pet bottles are mainly used, and most of such containers are discarded after the contents are used. However, with metal or resin containers, it is difficult to easily shrink and deform the shape of the container when disposing of the container. Therefore, with the increase in container demand in recent years, securing disposal sites has become a problem.
そ こで、 このよ う な問題を解決するために、 形状を容易に 縮小 して、 廃棄に際 して嵩張 らない容器が種々提案されてい る。 具体的には例えば実開昭 6 4 — 5 3 0 1 9 号公報におい て、 缶胴回 り に伸縮自在の波形を配 し、 手又は足等によ り容 易に潰せる缶が、 また実開平 3 — 1 5 3 3 5号公報において、 缶胴体に凹凸 を有する螺旋を形成し、 上部からの圧力によ り 容易に潰せる缶が提案されている。  Therefore, in order to solve such a problem, various containers have been proposed in which the shape is easily reduced and the container is not bulky at the time of disposal. Specifically, for example, in Japanese Utility Model Laid-Open Publication No. Sho 644-53019, a can that can be easily crushed by hand or foot, etc. In Japanese Unexamined Patent Publication No. Hei 3-1-153335, a can is proposed in which a spiral having irregularities is formed on a can body and can be easily crushed by pressure from above.
し かしながら、 前記胴体部に波形、 螺旋等の蛇腹を形成 し た容器の場合、 容器自体を該蛇腹部によ り縮小変形させる こ と は容易である が、 容器胴体の強度が減少するため、 例えば、 内容物を加熱、 冷却等する ために、 密封状態の容器に熱変化 を与えた際、 温度変化を伴う輸送時や炭酸含有飲料によ る内 圧膨張を伴う 輸送時、 更には容器の密封状態を解除 した使用 時等の廃棄時以外の不必要な際に、 容器胴体部に伸縮変形が 生 じ る と い う 欠点があ る。 このよ う な廃棄時以外の容器の変 形は、 容器自体の商品価値を著し く 低下させるため、 従来種 々 の縮小変形する容器の提案がなされている にも かかわ らず、 実施化されていないのが現況である。 However, in the case of a container in which a bellows such as a corrugation or a spiral is formed in the body, the container itself can be reduced and deformed by the bellows. However, the strength of the body of the container is reduced.For example, when heating or cooling the contents, heat is applied to the sealed container. The drawback is that the container body expands and contracts when transporting the beverage with internal pressure expansion, and when the container is unnecessarily used except when discarded, such as when the container is unsealed. is there. Such deformation of the container other than at the time of disposal significantly reduces the commercial value of the container itself, and has been implemented in spite of various proposals for containers that shrink and deform in the past. That is not the case.
更に、 前記蛇腹部を有する容器において、 胴体部を形成す る材料が樹脂の場合には、 廃棄のために容器を縮小させた後、 樹脂の復元力によ リ縮小率が低下する と い う 欠点も生 じ る。  Furthermore, in the container having the bellows portion, if the material forming the body portion is resin, after the container is reduced for disposal, the reduction ratio is reduced by the restoring force of the resin. There are also disadvantages.
本発明の 目的は、 廃棄時等の所望時に.おいて、 特別な装置 等を使用する こ と な く 、 手等によ り容易に縮小変形でき、 所 望時以外では、 熱変化、 炭酸等によ る内圧膨張等に起因する 変形等を生 じ る こ と のない容器を提供する こ と にある。  It is an object of the present invention to easily reduce and deform by hand or the like without using special equipment at the time of disposal or the like when desired, and to change heat, carbon dioxide, etc., except when desired. An object of the present invention is to provide a container which does not cause deformation or the like due to internal pressure expansion or the like due to the internal pressure.
本発明の別の 目 的は、 廃棄時等における縮小変形後、 経時 的に縮小率の低下が生 じない容器を提供する こ と にある。  Another object of the present invention is to provide a container in which the reduction ratio does not decrease over time after the reduction deformation at the time of disposal or the like.
図面の簡単な説明 BRIEF DESCRIPTION OF THE FIGURES
図 1 は、 本発明の容器の一例と しての飲料用缶を示す斜視 図である  FIG. 1 is a perspective view showing a beverage can as an example of the container of the present invention.
図 2 は 変形抵抗部と しての突出部及び窪み部を示す拡大 図である  Fig. 2 is an enlarged view showing the protrusions and depressions as deformation resistance parts.
図 3 は 変形抵抗部と しての突出部及び窪み部を示す斜視 図である 図 4 は、 変形抵抗部と しての突出部及び窪み部を示す側面 図である。 Fig. 3 is a perspective view showing the protruding part and the concave part as the deformation resistance part. FIG. 4 is a side view showing a protruding portion and a concave portion as deformation resistance portions.
図 5 は 飲料用缶を縮小 した状態を示す斜視図である。  FIG. 5 is a perspective view showing a state in which the beverage can is reduced.
図 6 は 飲料用缶の他の態様を示す斜視図である。  FIG. 6 is a perspective view showing another embodiment of the beverage can.
図 7 は 本発明の容器の他例と してのぺッ トボ トルを示す 正面図である。  FIG. 7 is a front view showing a jet bottle as another example of the container of the present invention.
発明の開示 Disclosure of the invention
本発明によれば、 開口 と、 開口 を閉塞する蓋と、 胴体部の 周囲に亘る溝状の凹部および凹部に対し相対的に突出する凸 部を交互に設けてなる蛇腹部と を備え、 前記蓋を前記開口か ら取 り 外 した状態で、 前記蛇腹部を圧縮する こ と によ り縮小 可能と した容器において、 前記凹部の一部および前記凸部の 一部に、 前記容器の圧縮によ る縮小を妨げず、 前記蛇腹部の 所望圧縮時以外の変形を防止する変形抵抗部を有する こ と を 特徴とする容器が提供される。  According to the present invention, there are provided: an opening; a lid for closing the opening; and a bellows portion formed by alternately providing a groove-shaped concave portion extending around a body portion and a convex portion protruding relatively to the concave portion. In a container which can be reduced by compressing the bellows portion with the lid removed from the opening, a part of the concave portion and a part of the convex portion are used for compressing the container. A container characterized by having a deformation resistance portion for preventing deformation of the bellows portion other than at the time of desired compression without hindering the reduction.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
以下図面を参照して本発明を更に詳細に説明する が本発明 はこれ ら に限定されるものではない。  Hereinafter, the present invention will be described in more detail with reference to the drawings, but the present invention is not limited thereto.
図 1 において 1 0 は金属製の飲料用缶であっ て、 缶 1 0 は、 蛇腹部 1 4 を有する胴体部 1 3 と 、 上面上に設け られた開口 1 1 (図 5参照） を塞 ぐ蓋 1 2 とで構成する。 蛇腹部 1 4 は、 胴体法面 （破線 s にて示す） よ り 断面三角形状に落ち込み、 胴体部 1 3 の周囲を廻る溝状の凹部 1 5 と、 凹部 1 5 に対し 相対的に突出する環状の凸部 1 6 と を缶 1 0 の長手軸方向に 交互に連続する よ う形成する。 また、 各々 の凹部 1 5 には外 方へ突出する変形抵抗部と しての突出部 1 7 が設け られる と 共に、 各々 の凸部 1 6 には内方へ窪む変形抵抗部と しての窪 み部 1 8 が設け られている。 これ らは蛇腹部 1 4 上において 長手軸方向に一直線状と なる よ う配置され、 胴体部 1 3 の周 方向に 1 2 0 ° の間隔を置いて三列設け られている。 In FIG. 1, reference numeral 10 denotes a metal beverage can, which closes a body 13 having a bellows portion 14 and an opening 11 provided on the upper surface (see FIG. 5). It consists of the lid 1 and 2. The bellows portion 14 falls into a triangular cross-section from the trunk slope (indicated by the broken line s), and protrudes relatively to the groove-shaped recess 15 surrounding the body 13 and the recess 15. The annular convex portions 16 and are formed so as to be alternately continuous in the longitudinal axis direction of the can 10. Also, each recess 15 In addition to being provided with a projection 17 as a deformation resistance portion protruding inward, each projection 16 is provided with a depression 18 as a deformation resistance portion which is depressed inward. I have. These are arranged on the bellows portion 14 so as to be linear in the longitudinal axis direction, and are provided in three rows at intervals of 120 ° in the circumferential direction of the body portion 13.
前記突出部 1 7及び窪み部 1 8 を図 2〜4 を参照して更に 詳細に説明する。 図 2及び 3 において突出部 1 7 は、 二つの 小三角形 1 7 a ， 1 7 b が、 共通する底辺 1 9 を折目 と して 鋭角 を もっ て接合 し、 且つ各頂点 1 7 a ' ， 1 7 b ， を凹部 1 5 の谷折目 1 5 ' に一致させた形状にて突出する。 一方窪 み部 1 8 は、 突出部 1 7 と 同一形状にて凸部 1 6 の山折目 1 6 ' から窪み、 縦折目 2 0 を有する。 この際縦折目 （ 1 9 ， 2 0 ) は、 直線状でな く 、 湾曲 していても良い。  The protrusion 17 and the depression 18 will be described in more detail with reference to FIGS. In FIGS. 2 and 3, the projecting portion 17 is formed by joining two small triangles 17a and 17b at an acute angle with a common base 19 as a fold, and each vertex 17a ', 17 b and protrude in a shape that matches the valley fold 15 ′ of the recess 15. On the other hand, the concave portion 18 has the same shape as the protruding portion 17, is concave from the mountain fold 16 ′ of the convex portion 16, and has a vertical fold 20. In this case, the vertical folds (19, 20) may be curved instead of being straight.
突出部 1 7及び窪み部 1 8 は、 蛇腹部 1 4 が長手軸方向に 伸長あるいは収縮 し ょ う とする際、 縦折目 1 9， 2 0 を支軸 と して二つの小三角形の形状を維持する よ う働き、 谷折 目 1 5 ， 及び山折目 1 6 ， からの凹凸部 1 5， 1 6 の屈曲に抵抗 し、 蛇腹部 1 4 の長手軸方向に対する胴体強度を補強する。 こ の胴体強度は、 例えば蓋 1 1 によ り閉塞され密封状態にあ る内容物を加熱あるいは冷却する際、 内圧変化によ る蛇腹部 1 4 の伸縮を防止 して缶 1 0 の形状を維持し、 且つ内容物を 飲用 に供 した後等の所望時における長手軸方向への手又は足 によ る圧縮によっ て、 缶 1 0 の縮小変形 （図 5 ) を妨げない 程度の強度であれば良い。 具体的には 5〜 6 0 k g重の力で 縮小変形 し得る強度である のが好ま しい。 このよ う な胴体強度を維持 し得るのであれば、 突出部 1 7 及び窪み部 1 8 の形状及び大き さ は、 胴体部 1 3 の材質及び 厚さ等に応 じて適宜選択する こ と ができ るが、 1 つの容器上 においては各突出部及び窪み部における圧縮によ る変形が同 様な変形と なる よ う に、 同一形状及び大きさ とするのが好ま しい。 このよ う な突出部 1 7及び窪み部 1 8 を形成する には、 平板金属を型圧縮 して蛇腹部 1 4 を形成する際に同時に形成 し得る型枠の使用等によ り得る こ と ができ る。 The projecting portion 17 and the recessed portion 18 have two small triangular shapes with the longitudinal folds 19, 20 as pivots when the bellows 14 is to expand or contract in the longitudinal axis direction. It resists the bending of the concave and convex portions 15 and 16 from the valley fold 15 and the mountain fold 16 and reinforces the body strength of the bellows 14 in the longitudinal axis direction. For example, when heating or cooling the contents sealed in a closed state by the lid 11, the body strength prevents the bellows 14 from expanding and contracting due to a change in the internal pressure, thereby changing the shape of the can 10. Maintained with sufficient strength not to hinder reduced deformation of can 10 (Fig. 5) by hand or foot compression in the longitudinal direction when desired, such as after drinking the contents for drinking. I just want it. Specifically, it is preferable that the strength is such that it can be reduced and deformed by a force of 5 to 60 kg. As long as such a body strength can be maintained, the shape and size of the protrusion 17 and the recessed part 18 can be appropriately selected according to the material and thickness of the body 13. Although it is possible, it is preferable that they have the same shape and the same size on one container so that the deformation due to the compression at each protruding portion and the concave portion becomes the same. Such projections 17 and depressions 18 can be formed by using a mold that can be formed at the same time as forming the bellows 14 by compressing the flat metal plate. Can be done.
前記突出部 1 7及び窪み部 1 8 は、 長手軸方向の圧縮によ り 、 縮小変形後にも と の形状に復元 しないよ う に不規則に変 形する。  The protruding portion 17 and the recessed portion 18 are irregularly deformed by compression in the longitudinal axis direction so that the original shape is not restored after the contraction deformation.
なお、 縦折目 1 9 ， 2 0 は径方向において多少のずれがあ る が （図 4 ) 、 長手軸方向における強度的には縦折目 1 9 及 び 2 0 がー直線上にある場合が最も強い。  Although the vertical folds 19 and 20 are slightly displaced in the radial direction (Fig. 4), when the vertical folds 19 and 20 are on the straight line in terms of the strength in the longitudinal axis direction, Is the strongest.
図 6 は、 前記缶 1 0 における蛇腹部 1 4 、 突出部 1 7及び 窪み部 1 8 の形状が異なる他の実施態様を示すものであっ て、 缶 6 0 の有する蛇腹部 6 4 は、 螺旋状に形成さ れてい る。 蛇 腹部 6 4 における凹部 6 5 には半球状の突出部 6 7 を、 凸部 6 6 には半球状の窪み部 6 8 を、 図示する よ う にそれぞれ長 手軸方向に対 して傾斜 して並ぶよ う配設する。 この場合も、 突出部 6 7及び窪み部 6 8 をそれぞれ胴体部 6 3 の一周 り毎 に同間隔にて少な く と も三個所設ける こ と が、 強度上望ま し い。 これ ら凹凸部 6 5 、 6 6 は蛇腹部 6 4 の伸縮変形に対 し て、 半球形状を保つよ う抵抗 し、 且つ缶 6 0 の廃棄時におけ る長手軸方向の圧縮に対 して、 縮小変形を妨げない胴体強度 を有する。 FIG. 6 shows another embodiment in which the shape of the bellows portion 14, the projecting portion 17 and the depression portion 18 in the can 10 is different, and the bellows portion 64 of the can 60 has a spiral shape. It is formed in a shape. A concave portion 65 in the bellows portion 64 has a hemispherical protrusion 67 on the convex portion 66, and a hemispherical concave portion 68 on the convex portion 66, as shown in FIG. Are arranged in a line. Also in this case, it is desirable in terms of strength to provide at least three protruding portions 67 and recessed portions 68 at the same interval on each circumference of the body portion 63. These uneven portions 65 and 66 resist the elastic deformation of the bellows portion 64 so as to maintain a hemispherical shape, and the longitudinal compression during disposal of the can 60, Body strength that does not hinder reduction Having.
図 7において、 7 0は樹脂製のペッ トボ トルであって、 該 ペ ッ トボ トル 7 0は、 蛇腹部 7 4 を有する胴体部 7 3 と 、 開 口 （図示せず） を閉塞する蓋 7 2 と によ り構成する。 蛇腹部 7 4は、 前記図 1 に示す蛇腹部 1 4 と 同様であっ て、 長手軸 方向に交互に連続する環状の凹部 7 5及び凸部 7 6からな り 、 蛇腹部 7 4上には、 該凹部 7 5及び凸部 7 6 を長手軸方向に 横断する よ う に、 一直線状の変形抵抗部 7 7が設けられてい る。 該変形抵抗部 7 7は、 胴体部 7 3の周方向において 1 2 0 ° 毎に 3本配設され、 長手軸方向における蛇腹部 74の胴 体強度を、 図 1 における突起部 1 7及び窪み部 1 8 と 同様に 補強している。 この際変形抵抗部 7 7の太さ は、 ぺッ 卜ボ ト ルを形成する材質等に応じて、 蛇腹部 74の伸縮変形に対し て、 形状を維持する よ う に抵抗し、 且つペ ッ トボ トル 7 0の 廃棄時における長手軸方向の圧縮に対 して、 縮小変形を妨げ ない胴体強度を有する よ う に適宜選択する こ と ができる。  In FIG. 7, reference numeral 70 denotes a resin-made pet bottle. The pet bottle 70 has a body portion 73 having a bellows portion 74, and a lid 7 for closing an opening (not shown). It consists of 2 and. The bellows portion 74 is the same as the bellows portion 14 shown in FIG. 1 and includes an annular concave portion 75 and a convex portion 76 that are alternately continuous in the longitudinal axis direction. A linear deformation resistance portion 77 is provided so as to cross the concave portion 75 and the convex portion 76 in the longitudinal axis direction. The three deformation resistance portions 77 are provided at intervals of 120 ° in the circumferential direction of the body portion 73, and the body strength of the bellows portion 74 in the longitudinal axis direction is reduced by the protrusions 17 and the depressions in FIG. Reinforced as in Part 18. At this time, the thickness of the deformation resistance portion 77 is such that it resists the expansion and contraction deformation of the bellows portion 74 so as to maintain its shape, and depends on the material of the pet bottle. When the bottle 70 is discarded, it can be appropriately selected so as to have a body strength that does not hinder contraction deformation in the longitudinal axis compression.
通常樹脂製であるペッ トボ トル 7 0は、 蛇腹部 7 4の圧縮 に対 し復元力 を有する が、 凹凸部 7 5， 7 6の縮小変形の際、 変形抵抗部 7 7が不規則な変形を受けるため、 前述の復元力 を低減する。 なお、 ペッ トボ トル 7 0 を圧縮した後、 蓋 7 2 によ リ 内圧を拘束すれば確実に復元力 を無く すこ と ができ る。 以上、 本発明 を説明 したが、 容器と してはプラスチッ ク製 の変形容器や角柱状容器等も含み、 ま た蛇腹部と しては、 断 面台形状や湾曲状の凹凸部よ り成るものや胴体周方向に波形 ノヽ。タ ーン を打つよ う形成されたもの等も含む。 さ ら に、 変形 抵抗部の形状、 設置数や個所等も既述のものに限定されるも のではな く 、 容器の材質や蛇腹の形状等によ り 、 適宜設定で さ る。 The pet bottle 70, which is usually made of resin, has a restoring force against the compression of the bellows portion 74, but when the uneven portions 75, 76 are reduced in deformation, the deformation resistance portion 77 is irregularly deformed. Therefore, the aforementioned restoring force is reduced. After the pet bottle 70 is compressed, the internal force is restrained by the lid 72, so that the restoring force can be surely eliminated. Although the present invention has been described above, the container includes a plastic deformed container, a prismatic container, and the like, and the bellows portion includes a cross-sectional trapezoidal shape or a curved uneven portion. Waves in the circumferential direction of objects and torso. Also includes those formed to hit the turn. In addition, deformation The shape, number of installations, locations, and the like of the resistance portion are not limited to those described above, but may be appropriately set depending on the material of the container, the shape of the bellows, and the like.

Claims

請求の範囲 The scope of the claims
1 ) 開口 と 、 開口 を閉塞する蓋と 、 胴体部の周囲に亘る溝状 の凹部および凹部に対 して相対的に突出する凸部を交互に設 けてな る蛇腹部と を備え、 前記蓋を前記開口 から取 り 外 した 状態で、 前記蛇腹部を圧縮する こ と によ り縮小可能と した容 器において、 前記凹部の一部および前記凸部の一部に、 前記 容器の圧縮によ る縮小を妨げず、 前記蛇腹部の所望庄縮時以 外の変形を防止する変形抵抗部を有する こ と を特徴とする容 ¾ 。  1) an opening, a lid for closing the opening, and a bellows portion provided with a groove-like concave portion extending around the body portion and a convex portion protruding alternately with respect to the concave portion. In a container which can be contracted by compressing the bellows part with the lid removed from the opening, a part of the concave part and a part of the convex part are used for compressing the container. A deformation resistance portion for preventing deformation of the bellows portion other than at the time of desired contraction without preventing the reduction.
2 ) 前記変形抵抗部を、 前記凹部及び前記凸部の前記胴体部 の一周 り毎に、 少な く と も 3 箇所有する請求の範囲 1 記載の 容器。  2) The container according to claim 1, wherein at least three places of the deformation resistance portion are provided for each circumference of the body portion of the concave portion and the convex portion.
3 ) 前記凹部及び凸部に有する各々 の変形抵抗部が、 前記容 器の長手軸方向に直列する請求の範囲 1 記載の容器。  3) The container according to claim 1, wherein each of the deformation resistance portions in the concave portion and the convex portion is connected in series in a longitudinal axis direction of the container.
4 ) 前記蛇腹部が螺旋状である請求の範囲 1 記載の容器。  4) The container according to claim 1, wherein the bellows portion is spiral.
PCT/JP1993/001225 1992-08-31 1993-08-31 Container WO1994005555A1 (en)

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