JP2595469B2 - Container with reinforcing ribs - Google Patents
Container with reinforcing ribsInfo
- Publication number
- JP2595469B2 JP2595469B2 JP16442394A JP16442394A JP2595469B2 JP 2595469 B2 JP2595469 B2 JP 2595469B2 JP 16442394 A JP16442394 A JP 16442394A JP 16442394 A JP16442394 A JP 16442394A JP 2595469 B2 JP2595469 B2 JP 2595469B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- rib
- long side
- strength
- present
- 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.)
- Expired - Fee Related
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は容器に補強のためのリブ
を形成した補強リブ付き容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having a reinforcing rib formed on a container.
【０００２】[0002]
【従来の技術】近年、清涼飲料水等の容器としては合成
樹脂のものが一般的となり、所謂ＰＥＴ容器が広く用い
られている。2. Description of the Related Art In recent years, containers for soft drinks and the like are generally made of synthetic resin, and so-called PET containers are widely used.
【０００３】このＰＥＴ容器は容器を肉薄に形成するこ
とが比較的容易であるが、そうすると容器の強度が低下
するため容器にリブを形成して補強することが行われて
いる。[0003] In this PET container, it is relatively easy to make the container thin, but if this is done, the strength of the container will be reduced, so ribs are formed in the container to reinforce it.
【０００４】ところで、容器の断面形状としては種々の
形態があるが、円形や正方形の他、四角形の４角を４５
°に切り欠いた変形８角形としたものがある。このよう
に変形８角形とした場合、容器の対面方向での強度が充
分にとれないため容器の胴部に１本の凹状リブを周設す
る手法が採られている。By the way, there are various shapes of the cross section of the container.
There is a modified octagon notched at °. When the deformed octagon is used as described above, the strength in the facing direction of the container cannot be sufficiently obtained, and therefore, a method of providing one concave rib on the body of the container is adopted.
【０００５】以下、凹状のリブ３と強度との関係につき
説明する。図１５ないし図１９に示すものは、従来公知
の構成によって形成された第１比較例であり、容器１を
ＰＥＴ（ポリエチレンテレフタレート：ヤング率Ｅ＝３
５０ｋｇ／ｍｍ2、ポアソン比ν＝０．４、肉厚０．３
５ｍｍ均一、以下同じ）で形成し、この容器１の胴部２
に１本のリブ３を形成したものであり、このリブ３の深
さｄを１．５ｍｍ、リブ３の底面２０から胴部２側面に
至る傾斜部の角度を４５°、リブ３の底面２０の幅を４
ｍｍとしたものである（以下、モデルＭ１と略称す
る）。そして、図１７はワイヤーフレーム図である。Hereinafter, the relationship between the concave rib 3 and the strength will be described. FIGS. 15 to 19 show a first comparative example formed by a conventionally known configuration, in which a container 1 is made of PET (polyethylene terephthalate: Young's modulus E = 3).
50 kg / mm 2 , Poisson's ratio ν = 0.4, wall thickness 0.3
5 mm uniform, the same shall apply hereinafter).
A depth d of the rib 3 is 1.5 mm, an angle of an inclined portion from the bottom surface 20 of the rib 3 to the side surface of the body 2 is 45 °, and a bottom surface 20 of the rib 3 is formed. Width of 4
mm (hereinafter abbreviated as model M1). FIG. 17 is a wire frame diagram.
【０００６】図１８はこの第１比較例の容器１を長辺１
０の対面方向で１ｋｇの力で押圧した結果を示し、約
７．１％（Ｘ方向の自由長が３５ｍｍ、その変形量は
２．４８ｍｍとなり、変形率は７．１％となった）の変
形がみられた。FIG. 18 shows the container 1 of the first comparative example with the long side 1
The result of pressing with a force of 1 kg in the facing direction of 0 shows about 7.1% (the free length in the X direction was 35 mm, the deformation amount was 2.48 mm, and the deformation rate was 7.1%). Deformation was observed.
【０００７】一方、この第１比較例の容器１を対角方向
の角部１６で１ｋｇの力で押圧すると図１９に示すよう
に約０．３７％（Ｘ方向の自由長が４３ｍｍ、その変形
量は０．１５８ｍｍとなり、変形率は０．３７％となっ
た）の変形がみられた。On the other hand, when the container 1 of the first comparative example is pressed with a force of 1 kg at the corner 16 in the diagonal direction, as shown in FIG. 19, about 0.37% (the free length in the X direction is 43 mm, its deformation is 43 mm). (The amount was 0.158 mm, and the deformation ratio was 0.37%).
【０００８】図２０ないし図２３に示すものは、前記第
１比較例のモデルＭ１の容器１のリブ３の深さｄを４．
５ｍｍとした第２比較例である（以下モデルＭ３と略称
する）。図２２はこの第２比較例の容器１を長辺１０の
対面方向で１ｋｇの力で押圧した結果を示し、約０．７
３％（Ｘ方向の自由長が３２ｍｍ、その変形量は０．２
３２ｍｍとなり、変形率は０．７３％となった）の変形
がみられた。FIGS. 20 to 23 show that the depth d of the rib 3 of the container 1 of the model M1 of the first comparative example is 4.
This is a second comparative example of 5 mm (hereinafter abbreviated as model M3). FIG. 22 shows the result of pressing the container 1 of the second comparative example with a force of 1 kg in a direction opposite to the long side 10 and about 0.7 kg.
3% (the free length in the X direction is 32 mm, and the deformation amount is 0.2
32 mm, and the deformation ratio was 0.73%).
【０００９】一方、この容器１を対角方向の角部１６で
１ｋｇの力で押圧すると図２３に示すように約４．２％
（Ｘ方向の自由長が４０ｍｍ、その変形量は１．６６ｍ
ｍとなり、変形率は４．２％となった）の変形がみられ
た。On the other hand, when the container 1 is pressed at a diagonal corner 16 with a force of 1 kg, as shown in FIG.
(The free length in the X direction is 40 mm, and its deformation is 1.66 m
m, and the deformation ratio was 4.2%).
【００１０】図２４ないし図２７に示すものは、第１比
較例のモデルＭ１の容器１においてリブ３を３箇所に形
成した第３比較例である（以下、モデルＭ５と略称す
る）。図２６はこの第３比較例の容器１を長辺１０の対
面方向で１ｋｇの力で押圧した結果を示し、約２．９％
（Ｘ方向の自由長が３５ｍｍ、その変形量は１．０３ｍ
ｍとなり、変形率は２．９％となった）の変形がみられ
た。一方、この第３比較例の容器１を対角方向の角部１
６で１ｋｇの力で押圧すると図２７に示すように約０．
７３％（Ｘ方向の自由長が４３ｍｍ、その変形量は０．
３１４ｍｍとなり、変形率は０．７３％となった）の変
形がみられた。FIGS. 24 to 27 show a third comparative example in which ribs 3 are formed at three locations in the container 1 of the model M1 of the first comparative example (hereinafter, abbreviated as model M5). FIG. 26 shows the result of pressing the container 1 of the third comparative example with a force of 1 kg in the direction opposite to the long side 10 and about 2.9%.
(The free length in the X direction is 35 mm, and the deformation is 1.03 m
m, and the deformation ratio was 2.9%). On the other hand, the container 1 of the third comparative example is
When pressed with a force of 1 kg at step 6, as shown in FIG.
73% (the free length in the X direction is 43 mm, and the amount of deformation is
314 mm, and the deformation ratio was 0.73%).
【００１１】以上の実験結果をモデルＭ１とモデルＭ５
との比較についてみると第１表のようになる。そして、
この第１表におけるケース１は、容器１の長辺１０の対
面方向における強度の実験結果を示すものであり、ケー
ス２は、容器１の角部１６の対角方向における強度の実
験結果を示すものである。[0011] The above experimental results are shown in the model M1 and the model M5.
Table 1 shows the comparison with. And
Case 1 in Table 1 shows an experimental result of strength in a direction opposite to the long side 10 of the container 1, and Case 2 shows an experimental result of strength in a diagonal direction of a corner 16 of the container 1. Things.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【発明が解決しようとする課題】以上の実験結果から、
浅いリブ３を形成した場合には容器１の角部１６の対角
方向での強度は高いが、容器１の長辺１０の対面方向で
の強度は低下するという問題があることがわかる。一
方、深いリブ３を形成した場合には容器１の長辺１０の
対面方向での強度は良好であるが、容器１の角部１６の
対角方向での強度は低いという問題がある。From the results of the above experiments,
When the shallow rib 3 is formed, the strength in the diagonal direction of the corner 16 of the container 1 is high, but the strength in the direction opposite to the long side 10 of the container 1 is reduced. On the other hand, when the deep ribs 3 are formed, the strength of the long side 10 of the container 1 in the facing direction is good, but the strength of the corner 16 of the container 1 in the diagonal direction is low.
【００１４】また、リブ３の本数を増すと、容器１の長
辺１０の対面方向での強度に優れているが、容器１の角
部１６の対角方向での強度は低下し、また、金型の形状
が複雑になるとともに、容器１の内容積が少なくなると
いう問題がある。When the number of ribs 3 is increased, the strength of the long side 10 of the container 1 in the opposite direction is excellent, but the strength of the corner 16 of the container 1 in the opposite direction is reduced. There is a problem that the shape of the mold becomes complicated and the internal volume of the container 1 decreases.
【００１５】本発明は前記した点に鑑みなされたもので
あり、リブの形成本数を増加させることなく、容器の長
辺の対面方向及び、角部の対角方向で優れた強度が得ら
れるようにした補強リブ付き容器を提供することを技術
的課題とする。The present invention has been made in view of the above points, and provides excellent strength in a direction facing the long side of the container and in a direction diagonal to the corner without increasing the number of ribs formed. It is a technical object to provide a container with a reinforcing rib.
【００１６】[0016]
【課題を解決するための手段】本発明は前記技術的課題
を解決するために、以下のような構成とした。すなわ
ち、第１発明は、断面略四角形に形成したポリエチレン
テレフタレート製の角瓶状の容器１を設け、この容器１
の胴部２に、断面谷形のリブ３を、前記胴部２の周りに
沿って周設し、このリブ３は、胴部２の長辺１０の両側
部１１で、リブ３の底面２０までの深さｄが、約１ｍｍ
〜約４．５ｍｍの範囲に形成されると共に、各長辺１０
のリブ３の底面２０は、各長辺１０の両側部１１で最も
浅くなり、各長辺１０の中央部１２で最も深くなる、内
方に湾曲した円弧状に形成して補強リブ付き容器とし
た。The present invention has the following configuration in order to solve the above technical problems. That is, in the first invention, a square jar-shaped container 1 made of polyethylene terephthalate having a substantially square cross section is provided.
A rib 3 having a trough section is provided around the body 2 along the periphery of the body 2, and the rib 3 is formed on both sides 11 of the long side 10 of the body 2 and at the bottom surface 20 of the rib 3. Depth d is about 1mm
And about 4.5 mm, and each long side 10
The bottom surface 20 of the rib 3 is formed to have an inwardly curved arc shape which is the shallowest on both sides 11 of each long side 10 and the deepest at the central portion 12 of each long side 10 to form a container with reinforcing ribs. did.
【００１７】第２の発明は、第１の発明の容器１の断面
形状を、正方形の４角を４５°で切り欠いた角部１６を
設けた形状として補強リブ付き容器とした。第３の発明
は、第２の発明の角部１６のリブ３の底面２０を、中央
部分が外側に膨出するように湾曲させて補強リブ付き容
器とした。In the second invention, the container 1 of the first invention has a cross-sectional shape provided with a corner 16 in which four corners of a square are cut off at 45 ° to provide a container with reinforcing ribs. In the third invention, the bottom surface 20 of the rib 3 of the corner portion 16 of the second invention is curved so that the central portion swells outward to form a container with reinforcing ribs.
【００１８】第４の発明から第６の発明は、第１の発明
から第３の発明のいずれかの発明の長辺１０に設けたリ
ブ３の底面２０の円弧状の曲率半径Ｒが１５０ｍｍとし
て補強リブ付き容器とした。The fourth to sixth aspects of the present invention are based on the assumption that the bottom surface 20 of the rib 3 provided on the long side 10 of any one of the first to third aspects has an arc-shaped curvature radius R of 150 mm. The container was provided with a reinforcing rib.
【００１９】[0019]
【作用】断面略四角形に形成した容器１の胴部２にリブ
３を形成して、このリブ３の底面２０は、各長辺１０の
中央部１２で最も深くなるように、内方に湾曲する円弧
状に形成したので、リブ３の断面形状は連続的に変化し
て、その形状が所謂ブリッジ効果を呈する。The rib 3 is formed on the body 2 of the container 1 having a substantially rectangular cross section, and the bottom surface 20 of the rib 3 is curved inward so as to be deepest at the center 12 of each long side 10. Since the rib 3 is formed in an arc shape, the cross-sectional shape of the rib 3 changes continuously, and the shape exhibits a so-called bridge effect.
【００２０】このため、リブ３の形状が大きく変形する
ことはなく、対面方向及び対角方向で優れた強度が得ら
れる。For this reason, the rib 3 is not greatly deformed, and excellent strength can be obtained in the facing direction and the diagonal direction.
【００２１】[0021]
【実施例】本発明の実施例を図１ないし図１４に基づい
て説明する。容器１はポリエチレンテレフタレート製の
パリソンをブロー成型により角瓶形に形成したものであ
り、材質の物性及び厚さは前記したものと同一である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The container 1 is formed by blowing a parison made of polyethylene terephthalate into a square bottle shape by blow molding, and the physical properties and thickness of the material are the same as those described above.
【００２２】[0022]
【第１実施例】容器１の断面形状は、正方形の４角を４
５°に切り欠いた不等辺八角形となっており、その対長
辺１０間距離は７３ｍｍ、対角部１６間距離は８９ｍｍ
となっている。[First Embodiment] The cross-sectional shape of the container 1 is as follows.
It is a trapezoidal octagon notched at 5 °, the distance between its long sides 10 is 73 mm, and the distance between its diagonal parts 16 is 89 mm
It has become.
【００２３】容器１の胴部２の略中央には断面谷形のリ
ブ３が胴周りに沿って周設されており、このリブ３の底
面２０の深さは各長辺１０の両側部１１で最も浅くな
り、各長辺１０の中央部１２に至るにしたがって徐々に
深くなるように、内方に湾曲する円弧状に形成されてい
る。このリブ３の水平面での曲率は半径Ｒが１５０ｍｍ
となっている。At the approximate center of the body 2 of the container 1, a rib 3 having a trough-shaped cross section is provided around the circumference of the body. , And is formed in an arc shape curved inward so as to gradually become deeper toward the central portion 12 of each long side 10. The curvature of the rib 3 in the horizontal plane is 150 mm in radius R.
It has become.
【００２４】前記した構成になる第１実施例の容器１を
モデルＭ６とし、その強度試験結果を図４及び図５によ
り説明する。図４はこの第１実施例の容器１を１ｋｇの
力で長辺１０の対面方向に押圧した結果を示し、約０．
９９％（Ｘ方向の自由長が３１．５ｍｍ、その変形量は
０．３１２ｍｍとなり、変形率は０．９９％となった）
の変形がみられた。一方、この容器１を１ｋｇの力で角
部１６の対角方向に押圧すると図５に示すように約１．
３％（Ｘ方向の自由長が４０ｍｍ、その変形量は０．５
３６ｍｍとなり、変形率は１．３％となった）の変形が
みられた。The container 1 of the first embodiment having the above-described configuration is referred to as a model M6, and the strength test results will be described with reference to FIGS. FIG. 4 shows the result of pressing the container 1 of the first embodiment in a direction opposite to the long side 10 with a force of 1 kg.
99% (the free length in the X direction is 31.5 mm, the deformation amount is 0.312 mm, and the deformation ratio is 0.99%)
Deformation was observed. On the other hand, when the container 1 is pressed in a diagonal direction of the corner 16 with a force of 1 kg, as shown in FIG.
3% (the free length in the X direction is 40 mm, and the deformation amount is 0.5
36 mm, and the deformation ratio was 1.3%).
【００２５】[0025]
【第２実施例】次に、第２実施例を図６ないし図９に基
づいて説明する。容器１の胴部２の略中央には断面谷形
のリブ３が胴周りに沿って周設されており、このリブ３
の底面２０の深さｄは各長辺１０の両側部１１で最も浅
くなり、各長辺１０の中央部１２に至るにしたがって徐
々に深くなるように、内方に湾曲する円弧状に形成され
ている。Second Embodiment Next, a second embodiment will be described with reference to FIGS. A rib 3 having a trough section is provided substantially at the center of the body 2 of the container 1 along the circumference of the body.
The depth d of the bottom surface 20 is formed in an arc shape that curves inward so that the depth d becomes shallowest on both sides 11 of each long side 10 and gradually increases toward the center 12 of each long side 10. ing.
【００２６】リブ３の横断面は、四角形の角部１６に設
けたリブ３の底面２０の半径Ｒを１２．５ｍｍで湾曲さ
せ、さらに各長辺１０に設けたリブ３の底面２０を、中
央部１２で最も深くなるように、内方に湾曲する円弧状
の形状としている。このリブ３の水平面での曲率は半径
Ｒが１５０ｍｍとなっている。。The cross section of the rib 3 is such that the radius R of the bottom surface 20 of the rib 3 provided at the corner 16 of the square is curved at 12.5 mm, and the bottom surface 20 of the rib 3 provided at each long side 10 is centered. The portion 12 has an arcuate shape curved inward so as to be deepest. The radius R of the rib 3 in the horizontal plane is 150 mm. .
【００２７】前記した構成になる容器１をモデルＭ７と
し、その強度試験結果を図８及び図９により説明する。
図８はこの容器１を１ｋｇの力で長辺１０の対面方向に
押圧した結果を示し、約０．７４％（Ｘ方向の自由長が
０．２３３ｍｍとなり、変形率は０．７４％となった）
の変形がみられた。The container 1 having the above-described configuration is referred to as a model M7, and the strength test results will be described with reference to FIGS.
FIG. 8 shows the result of pressing the container 1 in the direction opposite to the long side 10 with a force of 1 kg, and about 0.74% (the free length in the X direction is 0.233 mm, and the deformation rate is 0.74%. Was)
Deformation was observed.
【００２８】一方、この容器１を１ｋｇの力で角部１６
の対角方向に押圧すると図９に示すように約２．２％
（Ｘ方向の自由長が４１ｍｍ、その変形量は０．９０９
ｍｍとなり、変形率は２．２％となった）の変形がみら
れた。On the other hand, this container 1 is
When pressed diagonally, about 2.2% as shown in FIG.
(The free length in the X direction is 41 mm, and the amount of deformation is 0.909.
mm, and the deformation ratio was 2.2%).
【００２９】以上の結果をまとめると第２表のようにな
る。そして、ケース１とケース２は、第１表と同様のも
のを示すものである。The above results are summarized in Table 2. Case 1 and case 2 are the same as those in Table 1.
【００３０】[0030]
【表２】 [Table 2]
【００３１】[0031]
【第３実施例】次に、第３実施例を図１０ないし図１４
に基づいて説明する。この実施例は容器１の胴部２に断
面波型の横リブ４を多段に形成したものであり、この胴
部２の略中央に断面谷形のリブ３が胴周りに沿って周設
したものである。そして、このリブ３の深さは各長辺１
０の両側部１１で最も浅くなり、各長辺１０の中央部１
２に至るにしたがって深くなるように、内方に湾曲する
円弧状に形成されている。Third Embodiment Next, a third embodiment will be described with reference to FIGS.
It will be described based on. In this embodiment, a transverse rib 4 having a corrugated cross section is formed in multiple stages on a body portion 2 of a container 1, and a rib 3 having a valley cross section is provided around the circumference of the body at substantially the center of the body portion 2. Things. And the depth of this rib 3 is 1 on each long side.
0 is the shallowest on both sides 11 and the center 1 of each long side 10
2 so as to become deeper as it reaches 2.
【００３２】すなわち、図１０におけるＡ−Ａ’断面、
Ｂ−Ｂ’断面、Ｃ−Ｃ’断面についてみると、図１２に
示すようにリブ３の底面２０の深さｄは最浅部ｄ１が
２．５ｍｍ、ｄ２が３．２ｍｍ、最深部（中央部）は４
ｍｍとなっている。That is, the section taken along the line AA ′ in FIG.
Referring to the BB 'section and the CC' section, as shown in FIG. 12, the depth d of the bottom surface 20 of the rib 3 is 2.5 mm at the shallowest part d1, 3.2 mm at d2, and the deepest part (center Part) is 4
mm.
【００３３】また、リブ３の表面幅Ｌは同一であるが、
底面２０の幅Ｌ’１は６ｍｍ、Ｌ’２は５ｍｍ、Ｌ’３
は４ｍｍとなっている。このようにリブ３は図１１に示
す平面図で見ると中央部分が深い谷状になっている。Although the surface width L of the rib 3 is the same,
The width L′ 1 of the bottom surface 20 is 6 mm, L′ 2 is 5 mm, L′ 3
Is 4 mm. In this way, the rib 3 has a deep valley at the center when viewed in the plan view shown in FIG.
【００３４】前記した構成の容器を強度試験した結果、
以下の結果を得た。まず、容器１を長辺１０の対面方向
で１ｋｇの強さで圧縮したところ、図１３に示すよう
に、押圧面側が約２％（Ｘ方向の自由長が３３ｍｍ、そ
の変形量は０．６４８ｍｍとなり、変形率は２％となっ
た）凹み、側面側が約１．９％（Ｙ方向の自由長が３３
ｍｍ、その変形量は０．６２１ｍｍとなり、変形率は
１．９％となった）突出した。As a result of a strength test of the container having the above structure,
The following results were obtained. First, when the container 1 was compressed with a strength of 1 kg in the direction facing the long side 10, as shown in FIG. 13, the pressing surface side was about 2% (the free length in the X direction was 33 mm, and the deformation amount was 0.648 mm. And the deformation ratio was 2%. The dent was about 1.9% on the side surface (the free length in the Y direction was 33%).
mm, the deformation amount was 0.621 mm, and the deformation ratio was 1.9%).
【００３５】続いて、容器１を対角方向の角部１６で１
ｋｇの強さで圧縮したところ、図１４に示すように、応
力方向での対角方向で約１．１％（Ｘ方向の自由長が４
２ｍｍ、その変形量は０．４９７ｍｍとなり、変形率は
１．１％となった）変形し、応力方向に直交する対角方
向でも約１．１％膨らんで（Ｙ方向の自由長が４２ｍ
ｍ、その変形量は０．４６８ｍｍとなり、変形率は１．
１％となった）変形した。Subsequently, the container 1 is held at the diagonal corners 16 by one.
As shown in FIG. 14, when compressed at a strength of about kg, the diagonal direction in the stress direction is about 1.1% (free length in the X direction is 4%).
2 mm, the deformation amount is 0.497 mm, and the deformation ratio is 1.1%). It is expanded by about 1.1% in the diagonal direction perpendicular to the stress direction (the free length in the Y direction is 42 m).
m, the deformation amount is 0.468 mm, and the deformation ratio is 1.
1%).
【００３６】このように、長辺１０の対面方向の強度と
角部１６の対角方向の強度とが両立でき、外力によって
座屈することはない。これはリブ３の断面形状、とりわ
け底面２０の深さを、各長辺１０の中央部１２で最も深
くなるように内方に、湾曲する円弧状に形成して、連続
的に変化させていることから、構造的にブリッジを構成
し、外力に対して抗力を発揮するためと考えられる。ま
た、実施例では底面２０の幅Ｌ’も中央に至るにしたが
って狭くなるようにしたので、これらの相乗効果により
さらに強度が増したとも考えられる。As described above, the strength of the long side 10 in the facing direction and the strength of the corner 16 in the diagonal direction can be compatible, and there is no buckling due to external force. This means that the cross-sectional shape of the rib 3, particularly the depth of the bottom surface 20, is formed in a curved arc shape inward so as to be deepest at the central portion 12 of each long side 10, and is continuously changed. Therefore, it is considered that the bridge is structurally configured to exert a resistance against an external force. Further, in the embodiment, since the width L ′ of the bottom surface 20 is also reduced toward the center, it is considered that the strength is further increased by a synergistic effect of these.
【００３７】なお、リブ３の最小深さ及び最大深さは前
記した例に限定されるものではなく、約１ｍｍないし約
４．５ｍｍの範囲で適宜設定し得るのは勿論である。以
上述べたように、いずれの実施例においても対面方向の
強度と対角方向の強度とを両立させることができる。こ
れはリブ３の断面形状、とりわけ深さを連続的に変化さ
せていることから、構造的にブリッジを構成し、外力に
対して抗力を発揮するためと考えられる。The minimum depth and the maximum depth of the rib 3 are not limited to the above-described example, but can be set appropriately in the range of about 1 mm to about 4.5 mm. As described above, in any of the embodiments, the strength in the facing direction and the strength in the diagonal direction can be made compatible. This is considered to be because the cross-sectional shape, particularly the depth, of the rib 3 is continuously changed, so that the bridge is structurally constituted and a resistance against an external force is exerted.
【００３８】[0038]
【発明の効果】本発明によれば、断面略四角形に形成し
た容器１の胴部２に断面谷形のリブ３を胴周りに沿って
周設し、各長辺１０におけるこのリブ３の底面２０は、
各長辺１０の中央部１２で最も深くなるように、内方に
湾曲する円弧状に形成したので、リブ３の断面形状は連
続的に変化することとなり、その形状がブリッジを構成
する。According to the present invention, a rib 3 having a trough section is provided along the circumference of the body 2 of the container 1 having a substantially square cross section, and the bottom surface of the rib 3 at each long side 10 is provided. 20 is
Since the rib 3 is formed in an arc shape curved inward so as to be deepest at the central portion 12 of each long side 10, the cross-sectional shape of the rib 3 changes continuously, and the shape forms a bridge.
【００３９】このため、リブ３の形状が大きく変形して
強度が急減する虞れはなく、容器１の長辺１０の対面方
向では勿論、容器１の角部１６の対角方向で特に優れた
強度が得られる。しかも、リブ３を多数段形成するもの
に比較して金型の形状が簡単となるのは勿論、容器の容
積が少なくなるのを最小限に抑えることができる。For this reason, there is no danger that the shape of the rib 3 will be greatly deformed and the strength will suddenly decrease, and it is particularly excellent not only in the direction of the long side 10 of the container 1 but also in the diagonal direction of the corner 16 of the container 1. Strength is obtained. In addition, the shape of the mold is simpler than that in which the ribs 3 are formed in multiple stages, and the reduction in the volume of the container can be minimized.
【図１】本発明の一実施例の側面図FIG. 1 is a side view of one embodiment of the present invention.
【図２】本発明の第１実施例の横断面図FIG. 2 is a cross-sectional view of the first embodiment of the present invention.
【図３】本発明の第１実施例のワイヤーフレーム図FIG. 3 is a diagram of a wire frame according to the first embodiment of the present invention.
【図４】本発明の第１実施例の対面方向の強度実験の結
果を示すグラフ図FIG. 4 is a graph showing the results of a strength test in the facing direction according to the first embodiment of the present invention.
【図５】本発明の第１実施例の対角方向の強度実験の結
果を示すグラフ図FIG. 5 is a graph showing the results of a diagonal strength experiment of the first embodiment of the present invention.
【図６】本発明の第２実施例の横断面図FIG. 6 is a cross-sectional view of a second embodiment of the present invention.
【図７】本発明の第２実施例のワイヤーフレーム図FIG. 7 is a diagram of a wire frame according to a second embodiment of the present invention.
【図８】本発明の第２実施例の対面方向の強度実験の結
果を示すグラフ図FIG. 8 is a graph showing the results of a strength test in the facing direction according to the second embodiment of the present invention.
【図９】本発明の第２実施例の対角方向の強度実験の結
果を示すグラフ図FIG. 9 is a graph showing the results of a diagonal strength experiment of the second embodiment of the present invention.
【図１０】本発明の第３実施例の側面図FIG. 10 is a side view of a third embodiment of the present invention.
【図１１】本発明の第３実施例の平面図FIG. 11 is a plan view of a third embodiment of the present invention.
【図１２】本発明の第３実施例の断面図で、図Ａは図１
０のＡ−Ａ’断面図、図（Ｂ）は図１０のＢ−Ｂ’断面
図、図（Ｃ）は図１０のＣ−Ｃ’断面図FIG. 12 is a sectional view of a third embodiment of the present invention, and FIG.
10 is a cross-sectional view taken along the line AA ′, FIG. 10B is a cross-sectional view taken along the line BB ′ of FIG. 10, and FIG.
【図１３】本発明の第３実施例の対面方向の強度実験の
結果を示すグラフ図FIG. 13 is a graph showing the results of a strength test in the facing direction according to the third embodiment of the present invention.
【図１４】本発明の第３実施例の対角方向の強度実験の
結果を示すグラフ図FIG. 14 is a graph showing the results of a diagonal strength experiment of the third embodiment of the present invention.
【図１５】本発明の第１比較例の部分的側面図FIG. 15 is a partial side view of the first comparative example of the present invention.
【図１６】本発明の第１比較例の横断面図FIG. 16 is a cross-sectional view of the first comparative example of the present invention.
【図１７】本発明の第１比較例のワイヤーフレーム図FIG. 17 is a diagram of a wire frame according to a first comparative example of the present invention.
【図１８】本発明の第１比較例のモデルＭ１の対面方向
の強度実験の結果を示すグラフ図FIG. 18 is a graph showing the results of a strength test in the facing direction of the model M1 of the first comparative example of the present invention.
【図１９】本発明の第１比較例のモデルＭ１の対角方向
の強度実験の結果を示すグラフ図FIG. 19 is a graph showing the results of diagonal strength tests of the model M1 of the first comparative example of the present invention.
【図２０】本発明の第２比較例のモデルＭ３の横断面図FIG. 20 is a cross-sectional view of a model M3 according to a second comparative example of the present invention.
【図２１】本発明の第２比較例のワイヤーフレーム図FIG. 21 is a wire frame diagram of a second comparative example of the present invention.
【図２２】本発明の第２比較例のモデルＭ３の対面方向
の強度実験の結果を示すグラフ図FIG. 22 is a graph showing the results of a strength experiment in the facing direction of the model M3 of the second comparative example of the present invention.
【図２３】本発明の第２比較例のモデルＭ３の対角方向
の強度実験の結果を示すグラフ図FIG. 23 is a graph showing the results of strength tests in the diagonal direction of the model M3 of the second comparative example of the present invention.
【図２４】本発明の第３比較例のモデルＭ５の部分的側
面図FIG. 24 is a partial side view of a model M5 according to a third comparative example of the present invention.
【図２５】本発明の第３比較例のワイヤーフレーム図FIG. 25 is a diagram showing a wire frame according to a third comparative example of the present invention.
【図２６】本発明の第３比較例のモデルＭ５の対面方向
の強度実験の結果を示すグラフ図FIG. 26 is a graph showing the results of a strength test in the facing direction of the model M5 of the third comparative example of the present invention.
【図２７】本発明の第３比較例のモデルＭ５の対角方向
の強度実験の結果を示すグラフ図FIG. 27 is a graph showing the results of strength tests in the diagonal direction of the model M5 of the third comparative example of the present invention.
１ 容器 ２ 胴部 ３ リブ １０ 長辺 １１ 両側部 １２ 中央部 １６ 角部 ２０ 底面 ｄ リブの底面までの深さ DESCRIPTION OF SYMBOLS 1 Container 2 Body 3 Rib 10 Long side 11 Both sides 12 Central part 16 Corner 20 Bottom d Depth to bottom of rib
Claims (4)
レフタレート製の角瓶状の容器１を設け、この容器１の
胴部２に、断面谷形のリブ３を、前記胴部２の周りに沿
って周設し、このリブ３は、胴部２の長辺１０の両側部
１１で、リブ３の底面２０までの深さｄが、約１ｍｍ〜
約４．５ｍｍの範囲に形成されると共に、各長辺１０の
リブ３の底面２０は、各長辺１０の両側部１１で最も浅
くなり、各長辺１０の中央部１２で最も深くなる、内方
に湾曲した円弧状に形成した補強リブ付き容器。1. A container 1 in the form of a square bottle made of polyethylene terephthalate having a substantially quadrangular cross section is provided. A rib 3 having a valley cross section is provided on a body 2 of the container 1 along the periphery of the body 2. The rib 3 is provided on both sides 11 of the long side 10 of the body 2, and the depth d to the bottom surface 20 of the rib 3 is about 1 mm to
While being formed in a range of about 4.5 mm, the bottom surface 20 of the rib 3 of each long side 10 is the shallowest on both sides 11 of each long side 10 and the deepest at the center 12 of each long side 10. A container with reinforcing ribs formed in an arc shape curved inward.
５°で切り欠いた角部１６を設けた形状とした請求項１
記載の補強リブ付き容器。2. The cross-sectional shape of the container 1 is set to four squares of four squares.
2. A shape provided with a corner 16 cut out at 5 [deg.].
A container with a reinforcing rib as described in the above.
分が外側に膨出するように湾曲させた請求項２記載の補
強リブ付き容器。3. The container with reinforcing ribs according to claim 2, wherein the bottom surface 20 of the rib 3 of the corner portion 16 is curved so that a central portion bulges outward.
弧状の曲率半径Ｒが１５０ｍｍである請求項１〜請求項
３のいずれかに記載した補強リブ付き容器。4. The container with reinforcing ribs according to claim 1, wherein an arc-shaped curvature radius R of the bottom surface 20 of the rib 3 provided on the long side 10 is 150 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16442394A JP2595469B2 (en) | 1994-07-15 | 1994-07-15 | Container with reinforcing ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16442394A JP2595469B2 (en) | 1994-07-15 | 1994-07-15 | Container with reinforcing ribs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0752953A JPH0752953A (en) | 1995-02-28 |
| JP2595469B2 true JP2595469B2 (en) | 1997-04-02 |
Family
ID=15792874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16442394A Expired - Fee Related JP2595469B2 (en) | 1994-07-15 | 1994-07-15 | Container with reinforcing ribs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2595469B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3807203B2 (en) * | 2000-07-13 | 2006-08-09 | 東洋製罐株式会社 | Handle bottle |
| JP2005280755A (en) * | 2004-03-29 | 2005-10-13 | Yoshino Kogyosho Co Ltd | Synthetic resin-made bottle container |
| GB2457058B (en) * | 2008-01-31 | 2012-07-25 | Nicholas Edward Ward | Fluid transport container |
| JP5375031B2 (en) * | 2008-11-04 | 2013-12-25 | 東洋製罐株式会社 | Plastic container with handle |
| JP5646412B2 (en) * | 2011-08-24 | 2014-12-24 | 株式会社神戸製鋼所 | Pressure vessel |
| JP6395997B2 (en) * | 2012-06-29 | 2018-09-26 | 大日本印刷株式会社 | Plastic bottle |
| JP6519114B2 (en) * | 2014-07-25 | 2019-05-29 | 大日本印刷株式会社 | Plastic bottle reinforcement structure |
| JP6743360B2 (en) * | 2015-09-30 | 2020-08-19 | 大日本印刷株式会社 | Plastic bottle, filling body, and method for manufacturing filling body |
-
1994
- 1994-07-15 JP JP16442394A patent/JP2595469B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0752953A (en) | 1995-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0672423A (en) | Bottle | |
| US5222615A (en) | Container having support structure in its bottom section | |
| AU693721B2 (en) | Bottle body made of synthetic resin | |
| JP3842005B2 (en) | Reinforcement ribs on the bottle body | |
| JP4679038B2 (en) | Synthetic resin bottle type container | |
| US20140034600A1 (en) | Synthetic resin container | |
| JP2000229615A (en) | Plastic bottle | |
| JP2595469B2 (en) | Container with reinforcing ribs | |
| JP2003191928A (en) | Bottle-type container made of synthetic resin | |
| JP2008179400A (en) | Handle to be attached to plastic bottle, and plastic bottle with handle | |
| JP3050587U (en) | Biaxial stretch blow molded container | |
| JPH0764348B2 (en) | Bottom wall structure of synthetic resin container | |
| JP2000062743A (en) | Round plastic bottle | |
| JP2607799Y2 (en) | Plastic bottle | |
| JPH0563377B2 (en) | ||
| JP5966358B2 (en) | Plastic container | |
| JP3425236B2 (en) | Biaxial stretch blow molded bottle | |
| JPS62251335A (en) | Bottle made of oriented synthetic resin | |
| JP4317425B2 (en) | Blow molded square container made of synthetic resin | |
| JP5991006B2 (en) | Plastic container | |
| JP2949459B2 (en) | Hollow container made of polyethylene terephthalate resin | |
| JPH0669114U (en) | Biaxially stretched polyethylene terephthalate bottle | |
| JP3467336B2 (en) | Biaxially stretch blow molded container and bottom mold used for molding | |
| JP2607701Y2 (en) | Plastic bottle | |
| JPH0716579Y2 (en) | Container with reinforcing ribs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |