JP3371137B2 - Biaxial stretch blow molded bottle - Google Patents
Biaxial stretch blow molded bottleInfo
- Publication number
- JP3371137B2 JP3371137B2 JP26385794A JP26385794A JP3371137B2 JP 3371137 B2 JP3371137 B2 JP 3371137B2 JP 26385794 A JP26385794 A JP 26385794A JP 26385794 A JP26385794 A JP 26385794A JP 3371137 B2 JP3371137 B2 JP 3371137B2
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- bottom wall
- blow molding
- blow
- intermediate molded
- 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 - Lifetime
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
- B65D1/0261—Bottom construction
- B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/52—Moulds having decorating or printing means
-
- 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
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- 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
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0081—Bottles of non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、ポリエチレンテレフタ
レート樹脂製の２軸延伸ブロー成形壜体に関するもの
で、さらに詳言すれば、プリフォームから二度のブロー
成形操作により成形される２軸延伸ブロー成形壜体に関
するものである。
【０００２】
【従来の技術】ポリエチレンテレフタレート樹脂（以
下、単にＰＥＴと記す）は、安定した物性、無公害性、
優れた透明性、そして高い機械的強度等により２軸延伸
ブロー成形壜体として各方面で多量に使用されており、
特に食品用の壜体として極めて有用なものとなってい
る。
【０００３】このようにＰＥＴ製壜体は、優れた多数の
特性を効果的に発揮するものなのであるが、熱処理を施
していないＰＥＴ製の２軸延伸ブロー成形壜体は、熱に
対して弱く、７０度以上の高温下では容易に変形する。
【０００４】このため、１２０度の条件下で約３０分間
も熱処理するレトルト食品とか、その他の収納時に熱処
理される食品の収納容器として利用することができず、
耐熱性の高いＰＥＴ製壜体の出現が強く望まれていた。
【０００５】このＰＥＴ製壜体に耐熱性を与える方法と
して、“ダブルブロー”と称される技術が本出願人によ
り開発された（特公平４−５６７３４号公報参照）。
【０００６】このダブルブロー成形技術は、予め所望形
状に成形されているプリフォームを一次中間成形品に２
軸延伸ブロー成形する工程と、この一次中間成形品を加
熱して熱収縮させて二次中間成形品に成形に成形する工
程と、最後にこの二次中間成形品を壜体にブロー成形す
る工程とから成っており、一次中間成形品を加熱して熱
収縮させることにより、一次中間成形品内に生じている
残留歪を消滅させ、極めて耐熱性の高い壜体を得ること
ができる。
【０００７】また、通常の２軸延伸ブロー成形壜体は、
プリフォームの底壁部分に延伸ピンの先端が圧接した状
態で２軸延伸ブロー成形されるので、延伸ピンの接触部
分があまり延伸されず、底壁の中央部分が極端に厚くな
ってしまうのが普通であり、この肉厚となった底壁中央
部分は、無延伸もしくは延伸不足部分であるので、耐熱
性、耐内容物性、さらには透明性等の物性が劣るという
不都合がある。
【０００８】しかしながら、前記したダブルブロー成形
法によれば、延伸ピンを使用しない二度目のブロー成形
操作により、底壁中央部分を延伸成形することができ、
これにより底壁中央部分の極端な肉厚を解消して、その
肉厚程度を或る程度まで減少させることができると共
に、底壁の物性を改善することができる（図３参照）。
【０００９】
【発明が解決しようとする課題】ところで、この種の合
成樹脂製壜体においては、品質管理等の便宜のため、果
汁炭酸ボトルの底面を示す図４、および耐熱ボトルの底
面を示す図５に示すように、使用した成形金型の番号
（通称、型番ｎと言い、ダブルブロー成形壜体の場合
は、二度目のブロー成形金型の型番ｎとなる）が、底壁
２の周辺部４に刻印されている。
【００１０】しかしながら、ダブルブロー成形壜体の底
壁２の周辺部４は、充分に延伸成形されて肉薄にかつ透
明性の高い状態に成形されているため、細かい凹凸状に
成形される型番ｎをシャープに成形することができない
と共に、透明性が高い部分であるので、刻設された型番
ｎを判読し難いと云う問題があった。
【００１１】そこで、本発明は上記した従来技術におけ
る問題点を解消すべく創案されたもので、ダブルブロー
成形壜体において、底壁に刻印される型番が明瞭に視覚
認識できるようにすることを技術的課題とし、もって壜
体の底壁に刻設された型番による壜体の品質管理を間違
いなく、円滑に達成することを目的とする。
【００１２】
【課題を解決するための手段】上記技術的課題を解決す
る本発明の手段は、予め所望形状に成形されたプリフォ
ームを２軸延伸ブロー成形して一次中間成形品に成形
し、この一次中間成形品を加熱処理して熱収縮変形させ
て二次中間成形品に成形し、この二次中間成形品を最終
形状にブロー成形して成る透明な合成樹脂製壜体である
こと、二度目のブロー成形金型の型番を、底壁の比較的
肉厚部分である中心部に刻印すること、にある。
【００１３】
【作用】ダブルブロー成形された壜体の底壁は、比較的
充分に延伸成形されているとは言え、二次中間成形品の
時点における延伸不足部分である底壁の中央部の肉厚が
極端に大きいので、二度目のブロー成形処理により集中
的に延伸成形されたとしても、この二度目のブロー成形
処理による延伸量が一度目のブロー成形処理の延伸量に
比べて全体的に少ないこともあって、一度目のブロー成
形処理によりすでに充分に延伸された肉薄となっている
底壁の周辺部に比べて、その肉厚は大きなものとなって
いる。
【００１４】このように、底壁の中央部は底壁の周辺部
に比べて、その肉厚が大きいので、この肉厚の大きい
分、細かい凹凸である型番の刻設をシャープに達成する
ことができると共に、透明性が劣るので、刻設された型
番の視覚認識が容易となる。
【００１５】
【実施例】以下、本発明の実施例を、図１〜図３を参照
しながら説明する。図１、図２はそれぞれ果汁炭酸ボト
ル及び耐熱ボトルの底面を示したもので、これらの壜体
１はダブルブロー成形によって成形されたもので、予め
所望形状に成形されたプリフォームを２軸延伸ブロー成
形して一次中間成形品に成形し、この一次中間成形品を
加熱処理して熱収縮変形させて二次中間成形品に成形
し、この二次中間成形品を完成品である壜体１にブロー
成形したものである。
【００１６】この壜体１の底壁２は、中心部３が比較的
肉厚に、その周辺部４が肉薄になると云う肉厚分布（図
３参照）となっており、中心部３は最も肉厚な部分とな
っていて、他の部分、特に周辺部４に比べてその透明性
が劣っている。
【００１７】この底壁２の肉厚な中心部３の外面（下
面）に、二度目のブロー成形金型の型番ｎを二度目のブ
ロー成形力を利用して、壜体１のブロー成形と同時に型
番ｎの刻設を達成する。
【００１８】なお、一度目の２軸延伸ブロー成形処理時
に延伸不足部分となる底壁２の中心部は、この一次ブロ
ー成形処理時における熱影響によりわずかに白濁するの
が一般であるので、底壁２の中央部３の透明性の低下
は、この白濁により促進されることになり、これによっ
ても中央部３に刻設された型番ｎの視覚認識は行い易い
状態となる。
【００１９】
【発明の効果】本発明は、上記した構成となっているの
で、以下に示す効果を奏する。透明なダブルブロー成形
壜体において、型番を比較的肉厚で、かつ透明度の低い
底壁中心部に刻印するので、型番を明瞭に視覚認識する
ことができ、品質管理等の面から極めて有益である。
【００２０】型番は、比較的肉厚な底壁中央部の外面に
刻設されるので、肉薄な底壁周辺部に刻設するのに比べ
て、その凹凸をシャープに刻設することができ、もって
型番の識別を容易に達成できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxially stretch blow-molded bottle made of polyethylene terephthalate resin, and more particularly, to a method of blowing twice from a preform. The present invention relates to a biaxially stretch blow-molded bottle formed by a molding operation. [0002] Polyethylene terephthalate resin (hereinafter, simply referred to as PET) has stable physical properties, non-pollution properties,
Due to its excellent transparency and high mechanical strength, it is widely used in various fields as a biaxially stretched blow molded bottle.
Particularly, it is extremely useful as a bottle for food. [0003] As described above, PET bottles effectively exhibit many excellent properties. However, PET biaxially stretch blow-molded bottles that have not been subjected to heat treatment are vulnerable to heat. , Easily deforms at high temperatures of 70 ° C. or more. [0004] For this reason, it cannot be used as a storage container for retort foods that are heat-treated for about 30 minutes at 120 ° C or other foods that are heat-treated at the time of storage.
The appearance of PET bottles having high heat resistance has been strongly desired. As a method of imparting heat resistance to the PET bottle, a technique called "double blow" has been developed by the present applicant (see Japanese Patent Publication No. 4-56734). [0006] This double blow molding technique uses a preform previously formed into a desired shape as a primary intermediate molded product.
Axial stretch blow molding, heating and shrinking the primary intermediate molded article to form a secondary intermediate molded article, and finally blow molding the secondary intermediate molded article into a bottle By heat-shrinking the primary intermediate molded article by heat, residual strain generated in the primary intermediate molded article can be eliminated, and a bottle having extremely high heat resistance can be obtained. A conventional biaxially stretch blow-molded bottle is:
Since the biaxial stretching blow molding is performed with the tip of the stretching pin pressed against the bottom wall portion of the preform, the contact portion of the stretching pin is not stretched much, and the central portion of the bottom wall becomes extremely thick. Since the central portion of the bottom wall having a large thickness is a non-stretched portion or a stretched portion, the physical properties such as heat resistance, content resistance, and transparency are inferior. However, according to the above-mentioned double blow molding method, the central portion of the bottom wall can be stretch-molded by a second blow molding operation without using a stretching pin.
As a result, the extreme thickness of the central portion of the bottom wall can be eliminated, the thickness can be reduced to a certain extent, and the physical properties of the bottom wall can be improved (see FIG. 3). By the way, in this type of synthetic resin bottle, for convenience of quality control and the like, FIG. 4 showing the bottom of a fruit juice carbonated bottle and FIG. 4 showing the bottom of a heat-resistant bottle are shown. As shown in FIG. 5, the number of the molding die used (commonly referred to as model number n, and in the case of a double blow molded bottle, the model number n of the second blow molding die) is the number of the bottom wall 2. It is stamped on the peripheral part 4. However, since the peripheral portion 4 of the bottom wall 2 of the double blow-molded bottle is sufficiently stretched and formed into a thin and highly transparent state, the model number n is formed into fine irregularities. Cannot be sharply formed, and since it is a portion having high transparency, there is a problem that it is difficult to read the engraved model number n. Therefore, the present invention has been made to solve the above-mentioned problems in the prior art, and it is intended to make it possible to clearly and visually recognize a model number engraved on a bottom wall of a double blow molded bottle. It is a technical problem, and an object of the present invention is to surely and smoothly achieve quality control of a bottle by a model number engraved on a bottom wall of the bottle. Means for solving the above-mentioned problems The present invention for solving the above-mentioned technical problem is to form a preform preformed into a desired shape by biaxial stretching blow molding to form a primary intermediate molded product, A transparent synthetic resin bottle obtained by subjecting the primary intermediate molded article to heat treatment and heat shrinkage deformation to form a secondary intermediate molded article, and blow molding the secondary intermediate molded article to a final shape; In other words, the second blow molding die is engraved in the center of the bottom wall, which is a relatively thick portion. Although the bottom wall of the bottle formed by double blow molding is stretched relatively sufficiently, the bottom wall of the bottom wall, which is a part insufficiently stretched at the time of the secondary intermediate molded product, is formed. Since the wall thickness is extremely large, even if the stretch is intensively formed by the second blow molding, the amount of stretching by the second blow molding is generally smaller than the amount of stretch by the first blow molding. The wall thickness is larger than that of the peripheral portion of the thin bottom wall which has already been sufficiently stretched by the first blow molding process. As described above, since the central portion of the bottom wall is thicker than the peripheral portion of the bottom wall, the engraving of the model number having fine irregularities can be sharply achieved by the large thickness. And the poor transparency makes it easy to visually recognize the engraved model number. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 show the bottoms of a fruit juice carbonated bottle and a heat-resistant bottle, respectively. These bottles 1 are formed by double blow molding, and a preform previously formed into a desired shape is biaxially stretched. Blow molding to form a primary intermediate molded product, heat treatment and heat shrink deformation of the primary intermediate molded product to form a secondary intermediate molded product, and this secondary intermediate molded product is a bottle 1 as a finished product Blow molded. The bottom wall 2 of the bottle 1 has a thickness distribution (see FIG. 3) in which the central portion 3 is relatively thick and the peripheral portion 4 is thin. It is a thick part, and its transparency is inferior to other parts, especially the peripheral part 4. Using the second blow molding force on the outer surface (lower surface) of the thick central portion 3 of the bottom wall 2, the bottle 1 is blow molded using the second blow molding force. At the same time, the inscription of the model number n is achieved. The central portion of the bottom wall 2 which is a stretch-deficient portion during the first biaxial stretch blow molding is generally slightly clouded by the influence of heat during the primary blow molding. The decrease in the transparency of the central portion 3 of the wall 2 is promoted by the white turbidity, whereby the model number n engraved on the central portion 3 can be easily recognized visually. Since the present invention has the above-described structure, the following effects can be obtained. In a transparent double-blow molded bottle, the model number is stamped on the center of the bottom wall, which is relatively thick and has low transparency, so that the model number can be clearly recognized visually, which is extremely useful in terms of quality control and the like. is there. Since the model number is engraved on the outer surface of the center portion of the relatively thick bottom wall, the irregularities can be engraved more sharply than engraving on the peripheral portion of the thin bottom wall. Thus, the identification of the model number can be easily achieved.
【図面の簡単な説明】 【図１】本発明の一実施例を示す壜体の底面図。 【図２】本発明の他の実施例を示す壜体の底面図。 【図３】図１の実施例に係る壜体底部の断面図。 【図４】従来例を示す壜体の底面図。 【図５】他の従来例を示す壜体の底面図。 【符号の説明】 １ ； 壜体 ２ ； 底壁 ３ ； 中心部 ４ ； 周辺部 ｎ ； 型番[Brief description of the drawings] FIG. 1 is a bottom view of a bottle showing one embodiment of the present invention. FIG. 2 is a bottom view of a bottle showing another embodiment of the present invention. FIG. 3 is a sectional view of the bottom of the bottle according to the embodiment of FIG. 1; FIG. 4 is a bottom view of a bottle showing a conventional example. FIG. 5 is a bottom view of a bottle showing another conventional example. [Explanation of symbols] 1; Bottle 2; bottom wall 3; center 4; Peripheral part n; Model number
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ６５Ｄ 1/40 Ｂ６５Ｄ 1/40 // Ｂ２９Ｋ 67:00 Ｂ２９Ｋ 67:00 (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 23/00 B65D 25/20 B65D 1/02 B65D 1/40 B29C 49/00 - 49/80 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 identification code FI B65D 1/40 B65D 1/40 // B29K 67:00 B29K 67:00 (58) Investigated field (Int.Cl. 7 , DB Name) B65D 23/00 B65D 25/20 B65D 1/02 B65D 1/40 B29C 49/00-49/80
Claims (1)
を２軸延伸ブロー成形して一次中間成形品に成形し、こ
の一次中間成形品を加熱処理して熱収縮変形させて二次
中間成形品に成形し、この二次中間成形品を最終形状に
ブロー成形して成る透明な合成樹脂製壜体(1) であっ
て、二度目のブロー成形金型の型番(n)を、底壁(2) の
比較的肉厚部分である中心部(3) に刻印した２軸延伸ブ
ロー成形壜体。(57) [Claims 1] A preform previously formed into a desired shape is biaxially stretched and blow-molded to form a primary intermediate molded product, and the primary intermediate molded product is subjected to heat treatment and heat treatment. A transparent synthetic resin bottle (1) formed by shrinking and deforming to form a secondary intermediate molded product and blow molding the secondary intermediate molded product to a final shape, which is a second blow molding die. A biaxially stretch blow-molded bottle in which the model number (n) is stamped on the central portion (3), which is a relatively thick portion of the bottom wall (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26385794A JP3371137B2 (en) | 1994-10-27 | 1994-10-27 | Biaxial stretch blow molded bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26385794A JP3371137B2 (en) | 1994-10-27 | 1994-10-27 | Biaxial stretch blow molded bottle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08119283A JPH08119283A (en) | 1996-05-14 |
| JP3371137B2 true JP3371137B2 (en) | 2003-01-27 |
Family
ID=17395203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26385794A Expired - Lifetime JP3371137B2 (en) | 1994-10-27 | 1994-10-27 | Biaxial stretch blow molded bottle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3371137B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1005975A3 (en) * | 1998-12-01 | 2001-05-16 | FRIES PLANUNGS- UND MARKETINGGESELLSCHAFT m.b.H. | Blow mould with blow moulding cavity comprising adjustable indexing means |
| WO2012057090A1 (en) * | 2010-10-25 | 2012-05-03 | 日精エー・エス・ビー機械株式会社 | Production method for hollow container |
-
1994
- 1994-10-27 JP JP26385794A patent/JP3371137B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08119283A (en) | 1996-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4318882A (en) | Method for producing a collapse resistant polyester container for hot fill applications | |
| US4497855A (en) | Collapse resistant polyester container for hot fill applications | |
| US5562960A (en) | Double-blown PET bottle shaped container having essentially no residual stress and superior heat resistance | |
| US6012597A (en) | Polyester bottle with a handle and method of manufacturing the same | |
| EP0739823A1 (en) | Self-standing container having excellent heat resistance and pressure resistance and method of producing the same | |
| EP0155763A2 (en) | Method of blow-moulding a biaxially oriented polyethylene terephthalate resin bottle-shaped container | |
| US5248533A (en) | Biaxially oriented polyethylene terephthalate resin bottle-shaped container | |
| JPH085116B2 (en) | Biaxially stretched blow molding method and mold | |
| JPS6142808Y2 (en) | ||
| US5445784A (en) | Method of blow-molding biaxially-oriented polyethylene terephthalate resin bottle-shaped container | |
| JP3371137B2 (en) | Biaxial stretch blow molded bottle | |
| JP3086882B2 (en) | Method for forming bottles with heat resistance and pressure resistance | |
| JP4666798B2 (en) | Synthetic resin bottle type container | |
| JPH0767732B2 (en) | Biaxial stretch blow molding method | |
| JPS63203542A (en) | Bottle body bottom wall structure | |
| JP3986667B2 (en) | Polyethylene terephthalate resin bottle manufacturing method | |
| JPS6142806Y2 (en) | ||
| JP2002067130A (en) | Method for manufacturing heat resistant neck bent container | |
| JP2886292B2 (en) | Saturated polyester resin bottle and method for producing the same | |
| JP2777790B2 (en) | Biaxial stretch blow molding method | |
| JP2942849B2 (en) | Biaxial stretch blow molded bottle | |
| JPS63130330A (en) | Injection stretching blow molding method for polypropylene | |
| JP2987874B2 (en) | Intermediate molded products and biaxially stretched blow molded bottles | |
| JPS6135056B2 (en) | ||
| JP2963904B2 (en) | Biaxial stretch blow molding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071122 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081122 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081122 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091122 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101122 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101122 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111122 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121122 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121122 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131122 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term |