JPH0752953A - Container with reinforcing rib - Google Patents
Container with reinforcing ribInfo
- Publication number
- JPH0752953A JPH0752953A JP16442394A JP16442394A JPH0752953A JP H0752953 A JPH0752953 A JP H0752953A JP 16442394 A JP16442394 A JP 16442394A JP 16442394 A JP16442394 A JP 16442394A JP H0752953 A JPH0752953 A JP H0752953A
- Authority
- JP
- Japan
- Prior art keywords
- container
- rib
- long side
- cross
- section
- 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.)
- Granted
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)
- Containers Having Bodies Formed In One Piece (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
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 with reinforcing ribs in which a reinforcing rib is formed on the 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, a synthetic resin container has been generally used as a container for soft drinks and so-called PET container has been 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。In this PET container, it is relatively easy to make the container thin, but if this is done, the strength of the container is reduced, and therefore ribs are formed on 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, although there are various forms of the cross-sectional shape of the container, in addition to a circle and a square, the four corners of a quadrangle are 45
There is a deformed octagon cut out at °. In the case of the deformed octagonal shape as described above, since the strength of the container in the facing direction cannot be sufficiently obtained, a method of providing one concave rib around 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。The relationship between the concave rib 3 and strength will be described below. FIGS. 15 to 19 show a first comparative example formed by a conventionally known structure, in which the 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 below), and the body 2 of this container 1
One rib 3 is formed in the rib 3, the depth d of the rib 3 is 1.5 mm, the angle of the inclined portion from the bottom surface 20 of the rib 3 to the side surface of the body 2 is 45 °, and the bottom surface 20 of the rib 3 is 20 degrees. Width of 4
mm (hereinafter, abbreviated as model M1). 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 is shown to be about 7.1% (the free length in the X direction is 35 mm, the deformation amount is 2.48 mm, and the deformation ratio is 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 by the corner portion 16 in the diagonal direction with a force of 1 kg, as shown in FIG. 19, about 0.37% (the free length in the X direction is 43 mm, its deformation) The amount was 0.158 mm, and the deformation rate 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。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 in which the length is 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 the facing direction of the long side 10, which is about 0.7.
3% (free length in X direction is 32 mm, its deformation amount is 0.2
32 mm, and the deformation rate 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 by the corner portion 16 in the diagonal direction with a force of 1 kg, it is about 4.2% as shown in FIG.
(Free length in X direction is 40 mm, its deformation amount is 1.66 m
m, and the deformation rate 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 the ribs 3 are formed at three places 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 facing direction of the long side 10, about 2.9%.
(Free length in X direction is 35mm, its deformation amount is 1.03m
m, and the deformation rate was 2.9%). On the other hand, the container 1 of the third comparative example is provided with a diagonal corner 1
When 6 is pressed with a force of 1 kg, as shown in FIG.
73% (free length in the X direction is 43 mm, the amount of deformation is 0.
314 mm, and the deformation rate 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。Based on the above experimental results, model M1 and model M5
Table 1 shows the comparison with. And
Case 1 in Table 1 shows an experimental result of strength in the facing direction of the long side 10 of the container 1, and Case 2 shows an experimental result of strength in a diagonal direction of the corner portion 16 of the container 1. It is a thing.
【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。[Problems to be Solved by the Invention] From the above experimental results,
It can be seen that when the shallow ribs 3 are formed, the strength of the corner portion 16 of the container 1 in the diagonal direction is high, but the strength of the long side 10 of the container 1 in the facing direction decreases. 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 portion 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 portion 16 of the container 1 in the opposite direction is decreased, and 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 it is possible to obtain excellent strength in the facing direction of the long side of the container and the diagonal direction of the corners 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。In order to solve the above technical problems, the present invention has the following constitution. That is, the first aspect of the invention is to provide a container 1 in the shape of a square bottle made of polyethylene terephthalate and having a substantially rectangular cross section.
A rib 3 having a valley cross section is provided around the body 2 around the body 2. The ribs 3 are formed on both sides 11 of the long side 10 of the body 2 and on the bottom surface 20 of the rib 3. Depth d up to about 1 mm
Is formed in the range of about 4.5 mm and each long side 10
The bottom surface 20 of the rib 3 is the shallowest at both side portions 11 of each long side 10 and the deepest at the central portion 12 of each long side 10, and is formed in an inwardly curved arc shape to form a container with a reinforcing rib. 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 a second aspect of the invention, the container 1 according to the first aspect of the invention has a cross-sectional shape in which corners 16 are formed by cutting out the four corners of a square at 45 ° to provide a container with reinforcing ribs. A third aspect of the invention is a container with a reinforcing rib, which is obtained by bending the bottom surface 20 of the rib 3 of the corner portion 16 of the second aspect of the invention so that the central portion bulges outward.
【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。In the fourth invention to the sixth invention, the arc-shaped radius of curvature R of the bottom surface 20 of the rib 3 provided on the long side 10 of any of the first invention to the third invention is 150 mm. A container with a reinforcing rib was used.
【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 that it becomes deepest at the central portion 12 of each long side 10. Since the rib 3 is formed in a circular arc shape, the cross-sectional shape of the rib 3 continuously changes, 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。Therefore, the shape of the rib 3 is not largely 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。Embodiments of the present invention will be described with reference to FIGS. The container 1 is formed by blow molding a parison made of polyethylene terephthalate into a rectangular bottle shape, 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 a square with four corners.
It is an unequal-sided octagon cut out at 5 °, and the distance between its long sides 10 is 73 mm, and the distance between its diagonal portions 16 is 89 mm.
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。A rib 3 having a valley-shaped cross section is provided around the body 2 of the container 1 along the circumference of the body. The depth of the bottom surface 20 of the rib 3 is at both sides 11 of each long side 10. Is the shallowest, and is gradually deepened toward the central portion 12 of each long side 10, and is formed in an arc shape curved inward. The radius R of the rib 3 on the horizontal plane is 150 mm.
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 strength test results of the container 1 of the first embodiment having the above-described structure as a model M6 will be described with reference to FIGS. 4 and 5. FIG. 4 shows the result of pressing the container 1 of the first embodiment in the facing direction of the long side 10 with a force of 1 kg.
99% (free length in X direction is 31.5 mm, its deformation amount is 0.312 mm, and deformation rate is 0.99%)
Was observed. On the other hand, when the container 1 is pressed in a diagonal direction of the corner portion 16 with a force of 1 kg, it is about 1.
3% (free length in X direction is 40 mm, its deformation amount is 0.5
36 mm, and the deformation rate 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 valley-shaped cross section is provided around the trunk of the body 1 of the container 1 along the circumference of the trunk.
The bottom surface 20 has a depth d that is the shallowest at both side portions 11 of each long side 10 and is gradually deepened toward the central portion 12 of each long side 10 so as to be curved inwardly. 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 quadrangle is curved to 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 that is curved inward so as to be the deepest. The radius R of the rib 3 on 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-mentioned structure is used as a model M7, and the strength test result will be described with reference to FIGS. 8 and 9.
FIG. 8 shows the result of pressing this container 1 in the facing direction of the long side 10 with a force of 1 kg, which is about 0.74% (the free length in the X direction is 0.233 mm, and the deformation rate is 0.74%. Was)
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, the corner portion 16 of this container 1 is applied with a force of 1 kg.
When it is pressed in the diagonal direction of about 2.2% as shown in FIG.
(Free length in the X direction is 41 mm, the amount of deformation is 0.909.
mm, and the deformation rate 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. Then, Case 1 and Case 2 are similar to 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, horizontal ribs 4 having a corrugated cross section are formed in multiple stages on a body 2 of a container 1, and a rib 3 having a valley-shaped cross section is provided around the body around the center of the body 2. It is a thing. The depth of the rib 3 is 1 on each long side.
It becomes the shallowest on both sides 11 of 0, and the central part 1 of each long side 10
It is formed in an arc shape that curves inward so that it becomes 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 AA 'cross section in FIG.
Looking at the BB ′ cross section and the CC ′ cross 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, and 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 the 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 facing direction of the long side 10, as shown in FIG. 13, about 2% on the pressing surface side (the free length in the X direction is 33 mm, the deformation amount is 0.648 mm). The deformation rate was 2%) and the side surface was approximately 1.9% (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 set to 1 at the diagonal corners 16.
When compressed at a strength of kg, as shown in FIG. 14, about 1.1% in the diagonal direction in the stress direction (the free length in the X direction is 4
2 mm, the amount of deformation was 0.497 mm, and the deformation rate was 1.1%.) Deformed and expanded about 1.1% even in the diagonal direction orthogonal to the stress direction (free length in Y direction was 42 m.
m, the deformation amount is 0.468 mm, and the deformation rate is 1.
It became 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。In this way, the strength of the long side 10 in the facing direction and the strength of the corner portion 16 in the diagonal direction can both be achieved, and the buckling does not occur due to an external force. This is because the cross-sectional shape of the rib 3, in particular, the depth of the bottom surface 20 is formed inwardly so as to be the deepest in the central portion 12 of each long side 10, and is formed in a curved arc shape so as to be continuously changed. Therefore, it is considered that the bridge is structurally configured to exert a resistance force against an external force. Further, in the embodiment, the width L'of the bottom surface 20 is also narrowed toward the center, and it is considered that the synergistic effect of these increases the strength further.
【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。Incidentally, the minimum depth and the maximum depth of the rib 3 are not limited to the above-mentioned examples, and it is needless to say that they can be appropriately set within the range of about 1 mm to about 4.5 mm. As described above, the strength in the facing direction and the strength in the diagonal direction can be made compatible in any of the embodiments. It is considered that this is because the cross-sectional shape of the rib 3, in particular, the depth is continuously changed, so as to structurally form a bridge and exert a drag force against an external force.
【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 valley-shaped cross section is provided around a body 2 of a container 1 having a substantially rectangular cross section, and the bottom surface of the rib 3 on each long side 10 is provided. 20 is
Since it is formed in an arcuate shape that curves inward so that it becomes deepest at the central portion 12 of each long side 10, the cross-sectional shape of the rib 3 changes continuously, and that shape constitutes 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 fear that the shape of the rib 3 will be greatly deformed and the strength will be sharply reduced, and it is particularly excellent not only in the facing direction of the long side 10 of the container 1 but also in the diagonal direction of the corner portion 16 of the container 1. Strength is obtained. In addition, the shape of the mold is simpler than that of the rib 3 having a large number of stages, and it is possible to minimize the decrease in the volume of the container.
【図1】本発明の一実施例の側面図FIG. 1 is a side view of an 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 wire frame diagram of 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 of 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 test 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 the 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 wire frame diagram of the 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 the strength test in the facing direction of 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 the 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12 is a sectional view of a third embodiment of the present invention, FIG.
0 is a sectional view taken along the line AA ′, FIG. 10B is a sectional view taken along the line BB ′ of FIG. 10, and FIG. 10C is a sectional view taken along the line CC ′ of FIG. 10.
【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 the strength test in the facing direction of 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 a 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 wire frame diagram of 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 the 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 a diagonal strength experiment 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 of the 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 the strength test 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 result of a diagonal strength experiment 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 of 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 wire frame diagram of 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 the 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 result of a diagonal strength test 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 1 Container 2 Body 3 Rib 10 Long Side 11 Both Sides 12 Central Part 16 Corner 20 Bottom 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 rectangular bottle-shaped container 1 made of polyethylene terephthalate having a substantially rectangular cross section is provided, and a rib 3 having a valley-shaped cross section is provided on a body 2 of the container 1 along the circumference of the body 2. The ribs 3 are provided on both sides 11 of the long side 10 of the body portion 2, and the depth d to the bottom surface 20 of the rib 3 is about 1 mm.
While being formed in a range of about 4.5 mm, the bottom surface 20 of the rib 3 of each long side 10 becomes the shallowest at both side portions 11 of each long side 10, and becomes the deepest at the central portion 12 of each long side 10, A container with a reinforcing rib formed in the shape of an arc 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 container 1 has a cross-sectional shape in which the four corners of a square are four.
The shape having a corner 16 cut out at 5 ° is provided.
Container with reinforcing rib as described.
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 the 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 the bottom surface 20 of the rib 3 provided on the long side 10 has an arcuate radius of curvature R of 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 true JPH0752953A (en) | 1995-02-28 |
JP2595469B2 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) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002029521A (en) * | 2000-07-13 | 2002-01-29 | Toyo Seikan Kaisha Ltd | Bottle with handle |
JP2005280755A (en) * | 2004-03-29 | 2005-10-13 | Yoshino Kogyosho Co Ltd | Synthetic resin-made bottle container |
GB2457058A (en) * | 2008-01-31 | 2009-08-05 | Nicholas Edward Ward | Barrel with non-uniform cross section |
JP2010111396A (en) * | 2008-11-04 | 2010-05-20 | Toyo Seikan Kaisha Ltd | Synthetic resin-made container with handle |
JP2013044387A (en) * | 2011-08-24 | 2013-03-04 | Kobe Steel Ltd | Pressure vessel |
JP2014028651A (en) * | 2012-06-29 | 2014-02-13 | Dainippon Printing Co Ltd | Plastic bottle |
JP2016030601A (en) * | 2014-07-25 | 2016-03-07 | 大日本印刷株式会社 | Reinforcement structure of plastic bottle |
JP2017065738A (en) * | 2015-09-30 | 2017-04-06 | 大日本印刷株式会社 | Plastic bottle, filling body and production method of filling body |
-
1994
- 1994-07-15 JP JP16442394A patent/JP2595469B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002029521A (en) * | 2000-07-13 | 2002-01-29 | Toyo Seikan Kaisha Ltd | Bottle with handle |
JP2005280755A (en) * | 2004-03-29 | 2005-10-13 | Yoshino Kogyosho Co Ltd | Synthetic resin-made bottle container |
GB2457058A (en) * | 2008-01-31 | 2009-08-05 | Nicholas Edward Ward | Barrel with non-uniform cross section |
GB2457058B (en) * | 2008-01-31 | 2012-07-25 | Nicholas Edward Ward | Fluid transport container |
JP2010111396A (en) * | 2008-11-04 | 2010-05-20 | Toyo Seikan Kaisha Ltd | Synthetic resin-made container with handle |
JP2013044387A (en) * | 2011-08-24 | 2013-03-04 | Kobe Steel Ltd | Pressure vessel |
JP2014028651A (en) * | 2012-06-29 | 2014-02-13 | Dainippon Printing Co Ltd | Plastic bottle |
JP2016030601A (en) * | 2014-07-25 | 2016-03-07 | 大日本印刷株式会社 | Reinforcement structure of plastic bottle |
JP2017065738A (en) * | 2015-09-30 | 2017-04-06 | 大日本印刷株式会社 | Plastic bottle, filling body and production method of filling body |
Also Published As
Publication number | Publication date |
---|---|
JP2595469B2 (en) | 1997-04-02 |
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