JPS6341573B2 - - Google Patents
Info
- Publication number
- JPS6341573B2 JPS6341573B2 JP16854785A JP16854785A JPS6341573B2 JP S6341573 B2 JPS6341573 B2 JP S6341573B2 JP 16854785 A JP16854785 A JP 16854785A JP 16854785 A JP16854785 A JP 16854785A JP S6341573 B2 JPS6341573 B2 JP S6341573B2
- Authority
- JP
- Japan
- Prior art keywords
- diameter pipe
- small
- large diameter
- pipe
- straw
- 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
Links
- 239000010902 straw Substances 0.000 claims description 13
- 239000000155 melt Substances 0.000 claims description 7
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 4
- 229920001384 propylene homopolymer Polymers 0.000 claims description 4
- 229920005676 ethylene-propylene block copolymer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 239000011342 resin composition Substances 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- -1 cyclic diene hydrocarbon Chemical class 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
Landscapes
- Table Equipment (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、二段式伸縮自在ストローの改良に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improvement in a two-stage telescoping straw.
［従来の技術］
従来保管、携帯、運搬、飲料容器への付着等に
便利なように保管時等では短く、又吸引等の場合
は引伸ばして長く出来るように大径のパイプと小
径のパイプを組合わせた二段式伸縮自在ストロー
が提案されている。[Prior art] Conventionally, large diameter pipes and small diameter pipes are used to make them short for storage, convenient for storage, portability, transportation, attachment to beverage containers, etc., and to be able to be stretched and made long for suction, etc. A two-stage retractable straw that combines the following has been proposed.
このような二段式伸縮自在ストローのうち、小
径のパイプの端部にラツパ状の拡開部や凸部を設
けることによつて、大径のパイプに小径のパイプ
を挿入した時に、前記の拡開部又は凸部が大径の
パイプの内面に密着されるようにし、これによつ
て二段式伸縮自在ストローの全体の長さがいかな
る長さの場合でも重力程度ではずれることのない
ようにしたものも提案されている。 Among such two-stage telescoping straws, by providing a flared opening or convex part at the end of the small diameter pipe, when the small diameter pipe is inserted into the large diameter pipe, the above-mentioned effect can be achieved. The widening part or the convex part is made to be in close contact with the inner surface of the large diameter pipe, so that it will not come off due to gravity no matter the overall length of the two-stage retractable straw. A new version has also been proposed.
［解決しようとする問題点］
ところが、このような二段式伸縮自在ストロー
では、吸引時に息や吸引液のもれが最低限度にな
るように防止する必要がある。そのため大径のパ
イプの内面と小径のパイプの外面が何らかの手段
によつて密着するようにする必要がある。[Problems to be Solved] However, in such a two-stage retractable straw, it is necessary to minimize leakage of breath or suction liquid during suction. Therefore, it is necessary to bring the inner surface of the large diameter pipe and the outer surface of the small diameter pipe into close contact with each other by some means.
前述の小径のパイプの端部に拡開部や凸部を設
けた二段式伸縮自在ストローは、この拡開部が大
径のパイプの内面に密着するので息や吸引液のも
れを防止することになり好ましい。しかしこの小
径のパイプの拡開部の大径のパイプの内面への密
着を完壁なものとすることは非常に困難な問題で
あり生産収率にも影響を与えることになる。 The above-mentioned two-stage retractable straw has a widened part or convex part at the end of the small diameter pipe, and this widened part fits tightly against the inner surface of the large diameter pipe, preventing leakage of breath or suction fluid. It is preferable to do so. However, it is a very difficult problem to completely bring the enlarged portion of the small-diameter pipe into close contact with the inner surface of the large-diameter pipe, and this also affects the production yield.
［問題点解決のための手段］
本発明は、以上のような事情に鑑みなされたも
ので大径のパイプに端部を拡開した小径のパイプ
を挿入したストローで小径のパイプの拡開部の大
径のパイプの内面への密着性が完全になるように
大径のパイプと小径のパイプの材質を夫々見出し
限定したことを特徴とする二段式伸縮自在ストロ
ーを提供することを目的とするものである。[Means for Solving Problems] The present invention has been made in view of the above circumstances, and it is possible to use a straw in which a small diameter pipe with an enlarged end is inserted into a large diameter pipe. The purpose of the present invention is to provide a two-stage retractable straw, characterized in that the materials of the large diameter pipe and the small diameter pipe are determined and limited respectively so that the adhesion to the inner surface of the large diameter pipe is perfect. It is something to do.
以下本発明の二段式伸縮自在ストローの詳細な
内容を説明する。 The details of the two-stage retractable straw of the present invention will be explained below.
図面は、本発明の二段式伸縮自在ストローの一
部を拡大して示した断面図で、１は大径のパイ
プ、２はその端部に拡開部２ａを設けた小径のパ
イプである。この図のように小径のパイプ２に形
成された拡開部２ａが大径のパイプ１の内面に密
着するような構成になつている。しかも大径のパ
イプ１はメルトフローインデツクスが５〜15ｇ／
10min（JIS K6758）のエチレンプロピレンエラ
ストマー５〜30重量％とエチレンプロピレンブロ
ツクコポリマー70〜95重量％からなる樹脂組成物
にて形成され、小径のパイプはメルトフローイン
デツクス７〜14ｇ／10minのプロピレンホモポリ
マーにて形成されている。 The drawing is an enlarged cross-sectional view of a part of the two-stage retractable straw of the present invention, in which 1 is a large diameter pipe, and 2 is a small diameter pipe with an expanded portion 2a at its end. . As shown in this figure, the expanded portion 2a formed in the small diameter pipe 2 is configured to come into close contact with the inner surface of the large diameter pipe 1. Moreover, the large diameter pipe 1 has a melt flow index of 5 to 15 g/
It is made of a resin composition consisting of 5-30% by weight of ethylene propylene elastomer (JIS K6758) and 70-95% by weight of ethylene-propylene block copolymer, and the small diameter pipe is made of a propylene homopolymer with a melt flow index of 7-14 g/10 min. Made of polymer.
このように図面に示すような形状で前記のよう
な材質にて形成された大径のパイプ１および小径
のパイプ２を大径のパイプ１の内径が小径のパイ
プ２の拡開部２ａの外径よりも僅かに小さく、例
えば１mm〜1/10mm程度小さくしても、大径のパイ
プ１内に小径のパイプの拡開部を容易に挿入でき
て二段式伸縮自在パイプを形成する。 In this way, the large-diameter pipe 1 and the small-diameter pipe 2, which have the shape shown in the drawing and are made of the above-mentioned materials, are placed so that the inner diameter of the large-diameter pipe 1 is outside the enlarged part 2a of the small-diameter pipe 2. Even if it is slightly smaller than the diameter, for example, about 1 mm to 1/10 mm, the enlarged part of the small diameter pipe can be easily inserted into the large diameter pipe 1 to form a two-stage telescopic pipe.
以上のような材料つまり大径のパイプ１として
前記組成物を選ぶことによつて大径のパイプを弾
力性に富み且つ一応のこしの強さのあるものと
し、前述のように大径のパイプの内径よりも僅か
に大である小径のパイプの拡開部や凸部を挿入す
ることを可能にした。又小径のパイプとしてプロ
ピレンホモポリマーを用いたことによつて拡開部
の弾力性を適度なものとし、前記の材質の大径の
パイプとあわせてその内面と拡開部との密着が完
全なものになるようにした。 By selecting the above-mentioned material, that is, the composition as the large-diameter pipe 1, the large-diameter pipe can be made highly elastic and have a certain degree of stiffness. This makes it possible to insert the enlarged part or convex part of a small diameter pipe that is slightly larger than the inner diameter. In addition, by using propylene homopolymer for the small diameter pipe, the elasticity of the expanded part is moderate, and together with the large diameter pipe made of the above-mentioned material, the inner surface and the expanded part are in perfect contact. I tried to make it a thing.
大径のパイプにおける樹脂組成物のメルトフロ
ーインデツクスを５〜15ｇ／10minとしたのは、
成形性を考慮に入れてのことで、もしもメルトフ
ローインデツクスが５ｇ／10min未満の場合には
生産性が低下し又15ｇ／10minを越えるものは寸
法精度が悪化しいずれも好ましくない。 The reason for setting the melt flow index of the resin composition in large diameter pipes to 5 to 15 g/10 min is because
This takes formability into consideration; if the melt flow index is less than 5 g/10 min, productivity will decrease, and if it exceeds 15 g/10 min, dimensional accuracy will deteriorate, both of which are not preferred.
樹脂組成物におけるエチレンプロピレンエラス
トマーはエチレンおよびプロピレンを主体としあ
るいはさらにジオレフイン、環状ジエン炭化水素
などを成分とする共重合体であり、エチレンが20
〜80重量％ならば弾力性をよりもたらすので好ま
しい。 The ethylene propylene elastomer in the resin composition is a copolymer mainly composed of ethylene and propylene, or further composed of diolefin, cyclic diene hydrocarbon, etc.
~80% by weight is preferable because it provides more elasticity.
又、樹脂組成物のうちエチレンプロピレンブロ
ツクコポリマーにおいてエチレンの濃度が10重量
パーセント未満の場合には弾力性が不足し勝ちで
あり、一方40重量パーセントを越えると弾力性が
ありすぎるので好ましくない。 Furthermore, if the ethylene concentration of the ethylene propylene block copolymer in the resin composition is less than 10% by weight, the elasticity tends to be insufficient, whereas if it exceeds 40% by weight, the elasticity will be too high, which is undesirable.
さらに樹脂組成物においてエチレンプロピレン
エラストマーが５重量部未満では弾力性が不足
し、30重量部を越えると成形安定性が低下し寸法
精度に悪影響する。 Furthermore, if the amount of ethylene propylene elastomer in the resin composition is less than 5 parts by weight, elasticity will be insufficient, and if it exceeds 30 parts by weight, molding stability will decrease and dimensional accuracy will be adversely affected.
一方小径のパイプのプロピレンホモポリマー
は、こしの強さがあつて大径のパイプ内面に拡開
部や凸部が密着するが、やはりメルトフローイン
デツクスが７ｇ／10min未満の場合には生産性が
低下し又14ｇ／10minを越えるものは寸法精度が
悪化しいずれも好ましくない。 On the other hand, propylene homopolymer for small-diameter pipes has a high stiffness and the widened parts and convex parts come into close contact with the inner surface of large-diameter pipes, but productivity is still low when the melt flow index is less than 7 g/10 min. If it exceeds 14 g/10 min, the dimensional accuracy deteriorates, and both are undesirable.
尚大径のパイプ、小径のパイプの材料として高
密度ポリエチレンを用いた場合こしの強さが不足
し寸法精度と真円性が不足する。また低密度ポリ
エチレンを用いた場合は一層こしの強さが不足し
又寸法精度、真円性も不足する。 Furthermore, when high-density polyethylene is used as a material for large-diameter pipes and small-diameter pipes, the strain strength is insufficient, and dimensional accuracy and roundness are insufficient. Furthermore, when low-density polyethylene is used, the stiffness is further insufficient, and the dimensional accuracy and roundness are also insufficient.
［発明の効果］
以上説明したように本発明の二段式伸縮自在パ
イプは、大径パイプと小径パイプの夫々に適切な
材料を用いたことによつて大径パイプの内面と小
径パイプの拡開部や凸部の密着性が完全になり、
息や吸引液のもれを生ずることはない。また成形
上も好ましく生産性のよいパイプを得ることが出
来る。[Effects of the Invention] As explained above, the two-stage telescopic pipe of the present invention uses appropriate materials for each of the large-diameter pipe and the small-diameter pipe, so that the inner surface of the large-diameter pipe and the small-diameter pipe can be expanded. The adhesion of openings and protrusions becomes perfect,
No leakage of breath or suction fluid occurs. In addition, a pipe that is favorable in terms of molding and has good productivity can be obtained.
図面は本発明のストローの断面図である。
１…大径のパイプ、２…小径のパイプ、２ａ…
拡開部。
The drawing is a sectional view of the straw of the present invention. 1...Large diameter pipe, 2...Small diameter pipe, 2a...
Expansion section.
Claims (1)
た端部又は凸部が密着するように小径パイプを挿
入された二段式伸縮自在ストローにおいて、前記
大径パイプがメルトフローインデツクスが５〜15
ｇ／10minのエチレンプロピレンエラストマー５
〜30重量％とエチレンプロピレンブロツクコポリ
マー70〜95重量％からなる樹脂組成物よりなり、
前記小径のパイプがメルトフローインデツクスが
７〜14ｇ／10minのプロピレンホモポリマーより
なる二段式伸縮自在ストロー。1. In a two-stage telescoping straw in which a small diameter pipe is inserted into a large diameter pipe so that the enlarged end or convex part is in close contact with the inner surface of the large diameter pipe, the large diameter pipe has a melt flow index. 5～15
g/10min ethylene propylene elastomer 5
~30% by weight and 70~95% by weight of ethylene propylene block copolymer,
A two-stage telescopic straw in which the small diameter pipe is made of propylene homopolymer with a melt flow index of 7 to 14 g/10 min.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16854785A JPS6257526A (en) | 1985-08-01 | 1985-08-01 | Two-stage type freely extensible straw |
| PCT/JP1986/000315 WO1986007529A1 (en) | 1985-06-21 | 1986-06-20 | Suction pipe |
| US07/017,228 US4850533A (en) | 1985-06-21 | 1986-06-20 | Telescopic drinking straw |
| EP19860903610 EP0229847A4 (en) | 1985-06-21 | 1986-06-20 | Suction pipe. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16854785A JPS6257526A (en) | 1985-08-01 | 1985-08-01 | Two-stage type freely extensible straw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6257526A JPS6257526A (en) | 1987-03-13 |
| JPS6341573B2 true JPS6341573B2 (en) | 1988-08-17 |
Family
ID=15870039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16854785A Granted JPS6257526A (en) | 1985-06-21 | 1985-08-01 | Two-stage type freely extensible straw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6257526A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6685103B2 (en) | 2000-03-23 | 2004-02-03 | Showa Denko Plastic Products Co., Ltd. | Straw tube, and apparatus and method for producing the same |
| JP3380219B2 (en) * | 2000-03-23 | 2003-02-24 | 昭和電工プラスチックプロダクツ株式会社 | Straw tube, manufacturing apparatus and manufacturing method thereof |
-
1985
- 1985-08-01 JP JP16854785A patent/JPS6257526A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6257526A (en) | 1987-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |