JPH01122414A - Primary molded product of bottle body - Google Patents
Primary molded product of bottle bodyInfo
- Publication number
- JPH01122414A JPH01122414A JP62279811A JP27981187A JPH01122414A JP H01122414 A JPH01122414 A JP H01122414A JP 62279811 A JP62279811 A JP 62279811A JP 27981187 A JP27981187 A JP 27981187A JP H01122414 A JPH01122414 A JP H01122414A
- Authority
- JP
- Japan
- Prior art keywords
- wall
- molded product
- cylinder
- primary molded
- bottle
- 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
- 238000000071 blow moulding Methods 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 210000001015 abdomen Anatomy 0.000 abstract 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
- B29C2949/0813—Wall thickness of the neck
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
- B29C2949/0817—Wall thickness of the body
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、合成樹脂、特にポリエチレンテレフタレート
樹脂材料製の２軸延伸ブロー成形された比較的大型を壜
体成形用の一次成形品の構造に関するもので、さらに評
言すれば、胴部の太さの大きい壜体を成形できる一次成
形品を提供することを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a relatively large primary molded product made of synthetic resin, particularly polyethylene terephthalate resin material, and which is biaxially stretched and blow molded for molding a bottle. More specifically, the object is to provide a primary molded product that can be molded into a bottle with a large body.
〔従来の技術］
現在、合成樹脂製の壜容器が数多く利用されており、特
に大型壜容器としては、結晶性合成樹脂材料であるポリ
エチレンテレフタレート樹脂（以下、前車のためＰＥＴ
と記す）材料製の２軸延伸ブロー成形された大型堰体が
、耐内容物性、機械的強度、価格、廃棄処理等の点にお
いて多くの侵れた利点を発揮するので多量に利用される
ようになっている。[Prior art] Currently, many bottles made of synthetic resin are used, and especially large bottles are made of polyethylene terephthalate resin (hereinafter referred to as PET for the front car), which is a crystalline synthetic resin material.
Large-scale weir bodies made of biaxially stretch blow-molded materials (denoted as It has become.
このＰＥＴ製２軸延伸ブロー成形壜体壜体まず射出成形
により有底直線筒形状をした一次成形品を成形し、この
一次成形品の胴部を、延伸効果の出る温度まで加熱した
状態で２軸延伸ブロー成形して最終成形品としての壜体
に成形される。This PET biaxial stretch blow-molded bottle First, a primary molded product in the shape of a straight cylinder with a bottom is molded by injection molding, and the body of this primary molded product is heated to a temperature that produces a stretching effect. The finished product is formed into a bottle by axial stretch blow molding.
このように、この種の２軸延伸ブロー成形壜体は、有底
直線筒形状をした一次成形品の胴部を２軸延伸ブロー成
形して壜体に成形されるのであるが、２軸延伸成形され
る一次成形品の胴部に対しては、■延伸倍率に上限があ
ること、■ＰＥＴ材料の温度特性とブロー成形操作に要
求される温度制御との関係から肉厚に上限があること、
■射出成形品である一次成形品の成形金型からの離型条
件から、内面の一部でも口部の内周面の延長面よりも外
側に位置してはならないと云う限定があること等の制限
があり、また製品である壜体に対しては、■口部の寸法
が、予め規格された値に限定されると云う制限がある。In this way, this type of biaxially stretched blow molded bottle is formed by biaxially stretched blow molding the body of a primary molded product in the shape of a straight cylinder with a bottom. For the body of the primary molded product, there is an upper limit to the stretching ratio, and there is an upper limit to the wall thickness due to the relationship between the temperature characteristics of the PET material and the temperature control required for blow molding operations. ,
■Due to the conditions for releasing the primary molded product, which is an injection molded product, from the mold, there is a restriction that even a part of the inner surface cannot be located outside the extended surface of the inner peripheral surface of the mouth. In addition, for the bottle as a product, there is a restriction that (1) the dimensions of the opening are limited to pre-specified values.
すなわち、■に関しては、■との関係から、面積倍率で
７倍程度が限界であり、■に関しては、この一次成形品
に白化を発生させることなく、均一に急冷および急速加
熱を与えるには、その肉厚が４Ｍが上限であり、■に関
しては、一次成形品の胴部の内径は口部の内径よりも大
きくなってはならないのであり、さらに■に関しては、
最終成形部分となる一次成形品の口部の寸法が限定され
てしまうので、■との関係から一次成形品の胴部の径寸
法の上限が制限されることになる。That is, with regard to (2), the limit is about 7 times the area magnification due to the relationship with (2), and regarding (2), in order to uniformly rapidly cool and heat the primary molded product without causing whitening, The upper limit for the wall thickness is 4M, and regarding (2), the inner diameter of the body of the primary molded product must not be larger than the inner diameter of the mouth, and regarding (2),
Since the size of the opening of the primary molded product that will be the final molded part is limited, the upper limit of the diameter of the body of the primary molded product is limited due to the relationship with (2).
この上記した一次成形品に対する寸法上の制限の結果、
一次成形品の胴部の内径および肉厚が大幅に限定される
ことになり、このためより収納容積の大きい壜体を得た
い場合には、一次成形品の胴部の長さを大きくして胴部
高さの大きい壜体にしなければならなかった。すなわち
、一次成形品の胴部の内径および肉厚の上限値が制限さ
れているので、この一次成形品から成形される壜体の胴
部の太さを大きくすることができず、このため大きな容
積の壜体を得たい場合□には、壜体の胴部の高さを大き
くする他に手段がなかったのである。As a result of the above-mentioned dimensional restrictions on the primary molded product,
The inner diameter and wall thickness of the body of the primary molded product are significantly limited, so if you want to obtain a bottle with a larger storage capacity, you must increase the length of the body of the primary molded product. The bottle had to have a large body height. In other words, since the upper limit values for the inner diameter and wall thickness of the body of the primary molded product are limited, it is not possible to increase the thickness of the body of the bottle molded from this primary molded product. If you wanted to obtain a bottle with a large volume, there was no other way but to increase the height of the body of the bottle.
このため、２軸延伸ブロー成形された大型培体は、その
収納容積の割りには高さが大きくなり、充分に安定した
自立姿勢保持能力を与えることができないと共に、壜体
全体の高さと太さとのバランスが悪く、決して外観の良
いものとは言い難いものとなり、さらに外部から作用す
る押下げ力に対して、胴部の中央部の機械的耐久力が不
足し勝ちとなり、胴部中央部に不都合な座屈変形が発生
すると云う不都合が生じていた。For this reason, a large culture medium that has been biaxially stretched and blow-molded has a large height relative to its storage capacity, and is unable to provide a sufficiently stable ability to maintain a self-supporting posture. This results in a poor balance between the body and the body, which cannot be said to have a good appearance.Furthermore, the central part of the body tends to lack mechanical durability against the downward force applied from the outside, and the central part of the body tends to be damaged. However, there has been a problem in that undesirable buckling deformation occurs.
そこで、本発明は、上記した一次成形品および製品とし
ての壜体に対する制限の全てを満たした条件内で、従来
の壜体に比べてはるかに胴太な壜体を成形できる一次成
形品を提供することをその技術的課題とするものである
。Therefore, the present invention provides a primary molded product that can be molded into a bottle with a much thicker body than conventional bottles, while satisfying all of the above-mentioned restrictions on bottles as primary molded products and products. The technical challenge is to do so.
以下、本発明を、本発明の実施例を示す図面を参照しな
がら説明する。Hereinafter, the present invention will be described with reference to drawings showing embodiments of the invention.
本発明の手段は、 ゛
口筒２の下端に連設された有底直線筒体５の筒壁６の等
中心角毎部分を、縦溝状に陥没湾曲させて軸方向に沿っ
た複数のひだ壁部７に成形することにある。The means of the present invention is characterized in that portions of the cylinder wall 6 of the bottomed linear cylinder 5 connected to the lower end of the mouth cylinder 2 are depressed and curved at equal central angles in the shape of vertical grooves to form a plurality of grooves along the axial direction. The purpose is to form the pleated wall portion 7.
すなわち、筒壁６は、口筒２の内周面を延長した仮想さ
れる円筒状面上に内周面を位置させる部分と、この仮想
される円筒状面内に内周面を位置させるひた壁部７とが
周方向に沿って交互に位置する均一な肉厚の平断面形状
をしていると共に、筒体５内周面にひだ壁部７が形成す
る縦条状部分が全高さ範囲にわたって形成されたものと
なっているのである。That is, the cylindrical wall 6 has a portion in which the inner circumferential surface is located on an imaginary cylindrical surface that is an extension of the inner periphery of the mouth tube 2, and a portion in which the inner periphery is located within this imaginary cylindrical surface. The folded wall portions 7 are arranged alternately along the circumferential direction and have a flat cross-sectional shape with uniform wall thickness, and the vertical striped portion formed by the pleated wall portions 7 on the inner peripheral surface of the cylinder body 5 has a total height. It has been formed over a wide range of areas.
このように、筒壁６の等中心角毎部分をひだ壁部７に陥
没湾曲成形したので、筒壁６の周長は、゛筒壁６の平断
面形状が従来のように単純な円形となっている場合に比
べて、この成形されるひだ壁部７の数とひだ壁部７の陥
没量とに従って決定される値だけ大きくなっている。In this way, since the portions of the cylinder wall 6 at equal central angles are curved and depressed into the folded wall portion 7, the circumference of the cylinder wall 6 is different from the simple circular cross-sectional shape of the cylinder wall 6 as in the conventional case. Compared to the case where the folded wall 7 is formed, the folded wall 7 is larger by a value determined according to the number of folded walls 7 to be formed and the amount of depression of the folded wall 7.
それゆえ、一次成形品１の筒体５の周長は、筒体５全体
の太さが従来の場合と同じであるにもかかわらず、従来
の場合に比べて大きくなり、この大きくなった分だけ壜
体ｌ”に２軸延伸ブロー成形された際における胴部６゛
の太さが大きくなる。Therefore, the circumference of the cylindrical body 5 of the primary molded product 1 is larger than that of the conventional case, even though the thickness of the entire cylindrical body 5 is the same as that of the conventional case, and The thickness of the body portion 6'' becomes larger when the bottle body 6'' is biaxially stretched and blow molded.
この本発明による一次成形品ｌに対する壜体１″への２
軸延伸プロ一成形操作は、従来からの成形操作と全（同
じで良い。すなわち、一次成形品１全体を延伸効果ので
る温度に均一に加熱した後、この一次成形品ｌ内に圧力
流体を圧入すれば良いのである。2 to the bottle 1″ for the primary molded product l according to the present invention
The axial stretching process may be the same as the conventional forming operation. In other words, after uniformly heating the entire primary molded product 1 to a temperature that produces a stretching effect, pressurized fluid is introduced into the primary molded product 1. All you have to do is press fit.
しかしながら、この圧力流体の圧入による筒体５の延伸
変形形態は、従来の場合とは大きく相違するものとなる
。すなわち、この圧力流体が筒体５内に圧入されると、
筒壁６の延伸変形に先立って、ひだ壁部７がその陥没湾
曲した壁構造を延伸ではない伸び変形させて、筒壁６全
体の平断面形状を単純な円形とするのである。However, the form of stretching and deformation of the cylindrical body 5 due to the pressurized injection of the pressure fluid is greatly different from that in the conventional case. That is, when this pressure fluid is pressurized into the cylinder 5,
Prior to the stretching deformation of the cylindrical wall 6, the folded wall portion 7 causes its recessed and curved wall structure to undergo elongation deformation rather than stretching, so that the planar cross-sectional shape of the entire cylindrical wall 6 becomes a simple circle.
このように、ひだ壁部７の伸び変形により筒壁６の平断
面形状が単純な円形となった後に、従来と同様に、筒壁
６が延伸変形するのである。In this way, after the planar cross-sectional shape of the cylinder wall 6 becomes a simple circle due to the elongation deformation of the pleated wall portion 7, the cylinder wall 6 is elongated and deformed as in the conventional case.
図示実施例の場合、一次成形品１０口筒２は、従来の一
次成形品と同様に、その外周面に螺条３を周設すると共
に、この螺条３の下位にフランジ４を突条設している。In the case of the illustrated embodiment, the primary molded product 10-mouth cylinder 2 is provided with a thread 3 on its outer peripheral surface and a flange 4 protruded below the thread 3, similar to the conventional primary molded product. are doing.
有底直線筒形状をした筒体５の底壁８は、半球殻状に外
方に突出している。The bottom wall 8 of the cylindrical body 5 in the shape of a straight cylinder with a bottom protrudes outward in the shape of a hemispherical shell.
この筒体５は、その肉厚を、ＰＥＴの２軸延伸ブロー成
形に許容される最大の肉厚値である４ｍｍに設定されて
股り、一般には２ｍｍ程度の肉厚しかない口筒２に対し
て、その肉厚差分だけ外方に肉盛りした状態となってい
る。This cylinder 5 has a wall thickness set to 4 mm, which is the maximum wall thickness allowed for biaxial stretch blow molding of PET, and is shaped like a mouth tube 2 which generally has a wall thickness of only about 2 mm. On the other hand, it is in a state where it is built up outward by the thickness difference.
筒壁６に成形されるひだ壁部７は、その数が特定される
ものではないが、筒壁６の肉厚値、筒壁６の内径値、さ
らにはひだ壁部７の陥没量に従って適当な値に設定され
る。しかしながら、このひだ壁部７の数が少ないのでは
、実質的に得られる筒壁６の周長の増大分が少なく、反
対にひだ壁部７の数が多過ぎると、一次成形品１自体の
成形が困難となるので、実際にはこのひた壁部７の数と
しては第２図に示した４個ないし第３図に示した６個が
適当である。Although the number of pleated wall portions 7 formed on the cylindrical wall 6 is not specified, it may be determined appropriately according to the wall thickness of the cylindrical wall 6, the inner diameter value of the cylindrical wall 6, and the amount of depression of the pleated wall portion 7. set to a value. However, if the number of pleated wall portions 7 is small, the increase in the circumference of the cylindrical wall 6 that is obtained will be small; on the other hand, if the number of pleated wall portions 7 is too large, the primary molded product 1 itself will increase. Since molding becomes difficult, in reality, the appropriate number of the wall portions 7 is four as shown in FIG. 2 to six as shown in FIG. 3.
ひた壁部７の数を４個とした第２図実施例の場合、この
ひだ壁部７を成形することにより得られる筒壁６の実質
的な周長の増大分は、約１６％となり、第４図に示すよ
うに、ひた壁部７を設けない従来通りの構造の一次成形
品から成形された堰体１″に比べて、第２図に示した四
つのひだ壁部７を設けた本発明による一次成形品１から
成形された堰体１”は、その胴部６゛の太さを約２０％
増大させることができている。In the case of the embodiment shown in FIG. 2 in which the number of pleated wall portions 7 is four, the substantial increase in the circumference of the cylindrical wall 6 obtained by forming the pleated wall portions 7 is approximately 16%. As shown in FIG. 4, compared to the weir body 1'' which is molded from a primary molded product with a conventional structure without the folded wall portions 7, the four pleated wall portions 7 shown in FIG. The weir body 1" molded from the primary molded product 1 according to the present invention has a body 6" whose thickness is reduced by about 20%.
We have been able to increase this.
なお、本発明による一次成形品１は、その筒壁６にひだ
壁部７を陥没成形しているので、筒壁６周面が筒体５の
中心軸に対して均一距離に位置しないことになり、この
ため延伸ブロー成形を実施するための一次成形品ｌに対
する加熱操作は、従来のように遠赤外線ヒータ等を使用
したのでは、距離の不均一により筒体５全体に対する均
一な加熱を達成できないことになる。それゆえ、本発明
による一次成形品ｌを加熱するに際しては、一次成形品
１全体を雰囲気加熱するのが良い。In addition, in the primary molded product 1 according to the present invention, the pleat wall portion 7 is recessed into the cylinder wall 6, so that the peripheral surface of the cylinder wall 6 is not located at a uniform distance from the central axis of the cylinder body 5. Therefore, when heating the primary molded product l for stretch blow molding using a far-infrared heater or the like as in the past, uniform heating of the entire cylindrical body 5 cannot be achieved due to uneven distance. It turns out you can't do it. Therefore, when heating the primary molded product 1 according to the present invention, it is preferable to heat the entire primary molded product 1 in an atmosphere.
以上の説明から明らかなごとく、本発明は、同−寸法内
で、２軸延伸ブロー成形壜体の一次成形品の筒壁の実質
的な周長を増大させることができるので、従来に比べて
高さの割りには胴部が太く外観上の座りの良い大型壜体
を得ることができると共に、胴部が太くなった分だけ押
下げ力に対して耐座屈強度の高いものとなり、またその
構成は単に筒壁に複数のひだ壁部を陥没湾曲成形しただ
けの簡単なものであるので、射出成形金型を変更設定す
るだけで容易に成形することができ、さらに従来通りの
２軸延伸ブロー成形操作により堰体に成形することがで
きるので、その実施が簡単である等多くの優れた効果を
発揮するものである。As is clear from the above description, the present invention can increase the substantial circumference of the cylindrical wall of the primary molded product of the biaxially stretched blow-molded bottle within the same dimensions, compared to the conventional one. It is possible to obtain a large bottle with a thick body for its height and a comfortable appearance, and the thicker body has high buckling resistance against pressing force. Its structure is simple, simply by molding multiple pleats into a cylindrical wall with concave curves, so it can be easily molded by simply changing the settings of the injection mold. Since it can be formed into a weir body by a stretch blow molding operation, it exhibits many excellent effects such as being easy to implement.
第１図は、本発明による一次成形品の一実施例を示す全
体縦断面図で、図中にひだ壁部の縦断面形状を２点鎖線
で示している。
第２図および第３図は、第１図に示した実施例の筒体部
の平断面図を示すもので、第２図はひだ壁部を４個設け
た場合を、そして第３図はひだ壁部を６個設けた場合を
示している。
第４図は、本発明による一次成形品により成形された堰
体と従来からの一次成形品により成形された堰体との胴
部の太さを比較するための全体正面図で、従来例培体を
２点鎖線で示している。
符号の説明
１；一次成形品、１”、１”；堰体、２；口筒、３；螺
条、４；フランジ、５；筒体、６；筒壁、６゛：胴部、
７；ひだ壁部、８；底壁。
出願人 株式会社 吉 野 工 業 所２チシ」FIG. 1 is an overall vertical cross-sectional view showing an embodiment of a primary molded product according to the present invention, and in the figure, the vertical cross-sectional shape of the pleated wall portion is indicated by a chain double-dashed line. 2 and 3 are plan sectional views of the cylindrical body portion of the embodiment shown in FIG. 1. FIG. 2 shows the case where four pleated walls are provided, and FIG. A case is shown in which six pleated wall portions are provided. FIG. 4 is an overall front view for comparing the thickness of the body of a weir body formed by a primary molded product according to the present invention and a weir body molded by a conventional primary molded product. The body is shown by a two-dot chain line. Explanation of symbols 1: Primary molded product, 1", 1": Weir body, 2: Mouth pipe, 3: Thread, 4: Flange, 5: Cylinder body, 6: Cylinder wall, 6゛: Body part,
7; fold wall portion; 8; bottom wall. Applicant Yoshino Kogyo 2 Chishi Co., Ltd.”
Claims (1)
あって、口筒（２）の下端に連設された有底直線筒体（
５）の筒壁（６）の等中心角毎部分を、縦溝状に陥没湾
曲させて軸方向に沿った複数のひだ壁部（７）に成形し
て成る壜体の一次成形品。A primary molded product (1) of a biaxially stretched blow-molded bottle (1'), which includes a bottomed linear cylinder (2) connected to the lower end of a mouthpiece (2).
The primary molded product of the bottle is formed by forming the cylindrical wall (6) of 5) into a plurality of folded wall portions (7) along the axial direction by recessing and curving the cylindrical wall (6) at equal central angles into a vertical groove shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62279811A JP2516648B2 (en) | 1987-11-05 | 1987-11-05 | Bottle primary molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62279811A JP2516648B2 (en) | 1987-11-05 | 1987-11-05 | Bottle primary molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01122414A true JPH01122414A (en) | 1989-05-15 |
| JP2516648B2 JP2516648B2 (en) | 1996-07-24 |
Family
ID=17616248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62279811A Expired - Fee Related JP2516648B2 (en) | 1987-11-05 | 1987-11-05 | Bottle primary molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2516648B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020008092A (en) * | 2001-11-06 | 2002-01-29 | 김홍열 | Manufacture process of heatproof pet bottle and preform manufactured therewith and heatproof pet bottle |
| JP2016073557A (en) * | 2014-10-08 | 2016-05-12 | 株式会社カネカ | Tube for balloon manufacture, balloon, and balloon manufacturing method |
-
1987
- 1987-11-05 JP JP62279811A patent/JP2516648B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020008092A (en) * | 2001-11-06 | 2002-01-29 | 김홍열 | Manufacture process of heatproof pet bottle and preform manufactured therewith and heatproof pet bottle |
| JP2016073557A (en) * | 2014-10-08 | 2016-05-12 | 株式会社カネカ | Tube for balloon manufacture, balloon, and balloon manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2516648B2 (en) | 1996-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |