JP2545509B2 - Mouth tube processing method for polyethylene terephthalate resin bottle primary molded products - Google Patents

Mouth tube processing method for polyethylene terephthalate resin bottle primary molded products

Info

Publication number
JP2545509B2
JP2545509B2 JP61129393A JP12939386A JP2545509B2 JP 2545509 B2 JP2545509 B2 JP 2545509B2 JP 61129393 A JP61129393 A JP 61129393A JP 12939386 A JP12939386 A JP 12939386A JP 2545509 B2 JP2545509 B2 JP 2545509B2
Authority
JP
Japan
Prior art keywords
mouth tube
mouthpiece
polyethylene terephthalate
terephthalate resin
primary 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
Application number
JP61129393A
Other languages
Japanese (ja)
Other versions
JPS62284724A (en
Inventor
高雄 飯塚
直樹 筒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yoshino Kogyosho Co Ltd
Original Assignee
Yoshino Kogyosho Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to JP61129393A priority Critical patent/JP2545509B2/en
Publication of JPS62284724A publication Critical patent/JPS62284724A/en
Application granted granted Critical
Publication of JP2545509B2 publication Critical patent/JP2545509B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
    • B29C49/6445—Thermal conditioning of preforms characterised by temperature differential through the preform length
    • B29C49/6452—Thermal conditioning of preforms characterised by temperature differential through the preform length by heating 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
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6463—Thermal conditioning of preforms by contact heating or cooling, e.g. mandrels or cores specially adapted for heating or cooling preforms
    • B29C49/6464—Heating
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6463—Thermal conditioning of preforms by contact heating or cooling, e.g. mandrels or cores specially adapted for heating or cooling preforms
    • B29C49/6465—Cooling
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6463—Thermal conditioning of preforms by contact heating or cooling, e.g. mandrels or cores specially adapted for heating or cooling preforms
    • B29C49/6466—Thermal conditioning of preforms by contact heating or cooling, e.g. mandrels or cores specially adapted for heating or cooling preforms on the inside

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は，二軸延伸ブロー成形されるポリエチレンテ
レフタレート樹脂製壜体の口筒処理方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a method for treating a mouthpiece of a bottle made of polyethylene terephthalate resin which is biaxially stretch blow molded.

〔従来の技術〕[Conventional technology]

二軸延伸ブロー成形されるポリエチレンテレフタレー
ト樹脂製壜体において，胴筒のように，充分な延伸成形
をうける部分は優れた耐熱性を発揮するが，充分な延伸
成形をうけ難い口筒は，耐熱性の劣る部分となってい
る。In a polyethylene terephthalate resin bottle body that is biaxially stretch-blow-molded, the part that is sufficiently stretch-molded, such as a barrel, exhibits excellent heat resistance, but the mouthpiece that is difficult to undergo sufficient stretch-molding is heat-resistant. It is a part of inferiority.

この口筒の耐熱性の高めるために，従来，第３図に示
すように，一次成形品であるプリフォーム１の口筒２を
外側から遠赤外線ヒーター５等で加熱して熱結晶化して
いた。そして，この熱結晶化終了後に，冷却ノズル６を
口筒２内に密嵌入し，その口筒２を内側から押圧して口
筒２の寸法を矯正しながら，口筒２を内側から急冷し，
かつ口筒２外表面に冷風７を吹き付けて口筒２を外側か
らも急冷していた。In order to improve the heat resistance of this mouthpiece, conventionally, as shown in FIG. 3, the mouthpiece 2 of the preform 1 which is a primary molded product is heated from the outside by a far infrared heater 5 or the like to be thermally crystallized. . After completion of the thermal crystallization, the cooling nozzle 6 is tightly fitted in the mouth tube 2, and the mouth tube 2 is pressed from the inside to correct the dimensions of the mouth tube 2 while quenching the mouth tube 2 from the inside. ，
Moreover, cold air 7 was blown to the outer surface of the mouthpiece 2 to quench the mouthpiece 2 from the outside.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

しかし，上記した従来の方法には問題点がある。 However, the above-mentioned conventional method has a problem.

それは，この従来方法によって処理された壜体口筒が
高温の充填物や熱傷に弱く,85℃の内容物を充填しての3
0秒間の横転殺菌が，ほぼそれが耐えうることの出来る
限界で，例えば,80℃の熱湯による30分間のシャワー殺
菌や,120℃30分間の高温加熱殺菌（レトルト）等には耐
えられず，その結果，開栓トルクの低下や口筒が収縮し
ての液漏れ等の問題をおこしていた。The bottle mouthpiece treated by this conventional method is vulnerable to high-temperature filling and burns, and is
Rolling sterilization for 0 seconds is the limit that it can withstand, for example, shower sterilization with hot water at 80 ° C for 30 minutes or high temperature heat sterilization (retort) at 120 ° C for 30 minutes, etc. As a result, there were problems such as a decrease in the opening torque and liquid leakage due to contraction of the mouthpiece.

〔問題点を解決するための手段〕[Means for solving problems]

本発明者は，実験の結果，壜体口筒の耐熱性は口筒の
密度が高い方が優れていることを得，その壜体口筒の密
度を上げるために，口筒の内側からも加熱する方法を考
えた。そして，口筒を外側から加熱し，さらに口筒内に
140℃の加熱ノズルを嵌入して口筒を内側から加熱して
実験を行った結果，従来方法で処理された口筒上端部の
密度が1.3737であったのに対して，この方法では1.3870
まで上昇した。As a result of an experiment, the present inventor has found that the heat resistance of the bottle mouthpiece is better when the density of the bottle mouthpiece is higher. I thought about how to heat. Then, the mouth tube is heated from the outside, and further inside the mouth tube.
As a result of conducting an experiment in which a heating nozzle of 140 ° C was inserted and the mouthpiece was heated from the inside, the density of the upper end of the mouthpiece processed by the conventional method was 1.3737, while that by this method was 1.3870.
Rose to.

又，本発明者は，従来方法で処理された口筒が高温殺
菌されて収縮するのは，従来の冷却ノズルに問題がある
と考え，この冷却ノズルに代えて口筒の外側を内方径方
向に押圧しながら，この口筒を急冷する治具を使用して
実験を行った。これは，従来の冷却ノズルによる急冷で
は，冷却の際口筒を内側から押圧するので，その口筒に
内側に収縮しようとする残留応力が発生するとの考えに
基づいたもので，外側から内方径方向に押圧しながら急
冷することにより，口筒に外側に向かおうとする残留応
力を発生させ，それによって口筒の収縮を防止しようと
するものである。Further, the present inventor considers that the mouthpiece treated by the conventional method is sterilized by high temperature and shrinks, which is a problem with the conventional cooling nozzle. Experiments were performed using a jig that rapidly cools the mouthpiece while pressing in the direction. This is based on the idea that, in the case of rapid cooling with a conventional cooling nozzle, the mouth cylinder is pressed from the inside during cooling, so that residual stress that tries to contract inward is generated in the mouth cylinder. By quenching while pressing in the radial direction, residual stress is generated in the mouth tube, which tends to move outward, thereby preventing the mouth tube from contracting.

この方法によって処理された外径が38mmφの壜体口筒
を120℃の熱湯に30分間浸けるテストを行った結果，伸
縮量はわずかに0.01〜0.02mmであった。ちなみに従来方
法で処理された口筒の収縮量は,0.3mm以上である。As a result of a test in which a bottle-necked cylinder with an outer diameter of 38 mmφ treated by this method was immersed in hot water at 120 ° C for 30 minutes, the expansion and contraction amount was only 0.01 to 0.02 mm. By the way, the shrinkage of the mouthpiece treated by the conventional method is 0.3 mm or more.

上記実験結果に基づき，本発明者は次のような方法を
考えた。第１図を参照しながら説明する。Based on the above experimental results, the present inventor considered the following method. Description will be given with reference to FIG.

本発明は，二軸延伸ブロー成形されるポリエチレンテ
レフタレート樹脂性壜体一次成形品の口筒処理方法であ
って，一次成形品であるプリフォーム１の口筒２を加熱
して熱結晶化すると共に，その口筒２内に加熱ノズル３
を密嵌入し，口筒２を内側から押圧して押し広げ，なお
かつ内側から加熱して，口筒の熱結晶化をより促進させ
る。The present invention relates to a method for treating a mouthpiece of a polyethylene terephthalate resin bottle primary molded product that is biaxially stretch blow molded, in which a mouthpiece 2 of a preform 1 that is a primary molded product is heated and thermally crystallized. , The heating nozzle 3 in the mouth tube 2
Is tightly fitted, the mouthpiece 2 is pressed and spread from the inside, and is heated from the inside to further promote the thermal crystallization of the mouthpiece.

さらに，前記加熱ノズル３を前記口筒２より抜き取っ
た後，口筒２の外側に嵌合する治具４を嵌め込み，口筒
２を外側から内方径方向に押圧しながら，前記治具４か
ら前記口筒２に流体７を送り口筒２を急冷するものであ
る。Further, after pulling out the heating nozzle 3 from the mouth tube 2, a jig 4 that fits on the outside of the mouth tube 2 is inserted, and the jig 4 is pressed while pressing the mouth tube 2 from the outside in the inward radial direction. The fluid 7 is sent to the mouth tube 2 from the above to rapidly cool the mouth tube 2.

〔作用〕[Action]

上記のように，本発明は，一次成形品であるプリフォ
ーム１の口筒２を加熱し，その口筒２の内側に加熱ノズ
ル３を嵌入して，口筒２をさらに内側からも加熱するの
で，口筒２の熱結晶化がよりすすんで密度がより高くな
る。As described above, according to the present invention, the mouth tube 2 of the preform 1 which is the primary molded product is heated, the heating nozzle 3 is fitted inside the mouth tube 2, and the mouth tube 2 is further heated from the inside. Therefore, the thermal crystallization of the mouth tube 2 proceeds further and the density becomes higher.

又，この加熱ノズル３で口筒２を内側から押し広げる
が，これは口筒２が収縮するのを見込んで，その分，あ
らかじめ口筒２の径を大きくするものである。Further, the heating nozzle 3 spreads the mouth tube 2 from the inside, but this is to increase the diameter of the mouth tube 2 in advance in consideration of the contraction of the mouth tube 2.

又，治具４で口筒２を外側から内方に押圧するが，こ
れは，そうすることによって口筒２に外方に向けての残
留応力を発生させ，それによって口筒２が内方に収縮す
るのを阻止するものである。Also, the jig 4 pushes the mouthpiece 2 from the outside to the inside, which causes residual stress in the mouthpiece 2 toward the outside, which causes the mouthpiece 2 to move inward. It is to prevent it from contracting.

従って，従来のように，高温殺菌等を加えられること
によって収縮するということがない。Therefore, unlike conventional methods, it does not shrink due to the addition of high temperature sterilization.

〔実施例〕〔Example〕

第１図は，本発明の一実施例を示すものである。 FIG. 1 shows an embodiment of the present invention.

最初に遠赤外線ヒーター５等により口筒２を外側より
加熱するものであるが，この口筒２は180〜200℃に加熱
されている。First, the far-infrared heater 5 or the like heats the mouth tube 2 from the outside, and the mouth tube 2 is heated to 180 to 200 ° C.

次に加熱ノズル３が口筒２内に嵌入される仕組みとな
っているが，これは口筒２の熱結晶化のために，上記の
工程の20〜30秒後に行われるのが好ましい。Next, the heating nozzle 3 is fitted into the mouth tube 2, but this is preferably performed 20 to 30 seconds after the above-mentioned step for thermal crystallization of the mouth tube 2.

この加熱ノズル３の温度は，特に限定されるものでは
ないが,90℃と140℃で実験を行った結果,140℃に設定し
た方が，より高い密度を得ることが出来ることがわかっ
た。さらに，その後の実験から190℃前後が最適である
こともわかった。The temperature of the heating nozzle 3 is not particularly limited, but as a result of conducting experiments at 90 ° C and 140 ° C, it was found that a higher density can be obtained by setting it to 140 ° C. Furthermore, subsequent experiments revealed that the optimum temperature was around 190 ° C.

口筒２の外側に嵌合する治具は，その軸方向の中央に
冷風７の通路が形成されており，口筒２を内外の両側か
ら急冷するものである。The jig fitted to the outside of the mouth tube 2 has a passage for the cold air 7 formed at the center in the axial direction thereof, and rapidly cools the mouth tube 2 from both inside and outside.

口筒２を急冷する流体は，冷風に限定されるものでな
く，水等の液体であっても良い。The fluid for rapidly cooling the mouthpiece 2 is not limited to cold air, and may be a liquid such as water.

尚，第２図は第１図に示す工程の内，最初の二工程を
同時に行うものを示している。この方法だと，処理時間
が短縮されるという利点がある。It should be noted that FIG. 2 shows that the first two steps of the steps shown in FIG. 1 are simultaneously performed. This method has the advantage of shortening the processing time.

〔発明の効果〕〔The invention's effect〕

このように，本発明は，口筒を内側からも加熱するの
で熱結晶化がよりすすみ，口筒密度をより高めることが
出来る。又，治具で口筒を急冷すると共に，その口筒に
外方に向かう残留応力を発生させるので，口筒収縮しに
くい。As described above, according to the present invention, since the mouthpiece is also heated from the inside, the thermal crystallization is further advanced, and the mouthpiece density can be further increased. Further, since the jig is used to rapidly cool the mouthpiece and a residual stress outward is generated in the mouthpiece, it is difficult for the mouthpiece to contract.

その結果，本発明によって処理された壜体口筒は，従
来より高温の内容液を充填されても，又，従来より高温
の熱湯によって殺菌されても，口筒が収縮したり開栓ト
ルクが低下したりして液漏れを起こすことがない。As a result, the bottle mouthpiece treated according to the present invention has a contracted mouth opening and an opening torque even if it is filled with a content liquid having a higher temperature than before or sterilized with hot water having a temperature higher than before. It will not drop and will not leak.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の一実施例を示す工程図，第２図は他の
実施例を示す工程図，第３図は従来例を示す工程図であ
る。 符合の説明 1:プリフォーム,2:口筒， 3:加熱ノズル,4:治具,5:ヒーター， 6:冷却ノズル,7:冷風。FIG. 1 is a process drawing showing an embodiment of the present invention, FIG. 2 is a process drawing showing another embodiment, and FIG. 3 is a process drawing showing a conventional example. Explanation of signs 1: preform, 2: mouthpiece, 3: heating nozzle, 4: jig, 5: heater, 6: cooling nozzle, 7: cold air.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】二軸延伸ブロー成形されるポリエチレンテ
レフタレート樹脂製壜体の口筒処理方法において、一次
成形品であるプリフォーム（１）の口筒（２）を加熱し
て熱結晶化し，該口筒（２）内に加熱ノズル（３）を密
嵌入して該口筒（２）を内側から押圧して該口筒（２）
を押し広げると共に，該口筒（２）を内側からも加熱し
て前記口筒（２）の熱結晶化をさらに促進させ，前記加
熱ノズル（３）を前記口筒（２）より抜き取った後，該
口筒（２）の外側に嵌合する治具（４）を嵌め込み，該
口筒（２）を外側から内方径方向に押圧すると共に，前
記治具（４）から前記口筒（２）に流体（７）を送り該
口筒（２）を急冷して成るポリエチレンテレフタレート
樹脂製壜体一次成形品の口筒処理方法。1. A method for treating a bottle of a polyethylene terephthalate resin bottle to be biaxially stretch-blow-molded, which comprises heating a barrel (2) of a preform (1) which is a primary molded product to thermally crystallize it. The heating nozzle (3) is tightly fitted in the mouth tube (2), and the mouth tube (2) is pressed from the inside so that the mouth tube (2) is
And then heat the mouth tube (2) from the inside to further promote thermal crystallization of the mouth tube (2), and after removing the heating nozzle (3) from the mouth tube (2) , A jig (4) fitted to the outside of the mouth tube (2) is fitted, and the mouth tube (2) is pressed from the outside in the inward radial direction, and at the same time, the jig (4) is moved to the mouth tube (2). A method for treating a mouthpiece of a polyethylene terephthalate resin bottle primary molded product, which comprises sending a fluid (7) to 2) to rapidly cool the mouthpiece (2).
JP61129393A 1986-06-04 1986-06-04 Mouth tube processing method for polyethylene terephthalate resin bottle primary molded products Expired - Lifetime JP2545509B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61129393A JP2545509B2 (en) 1986-06-04 1986-06-04 Mouth tube processing method for polyethylene terephthalate resin bottle primary molded products

Applications Claiming Priority (1)

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JP61129393A JP2545509B2 (en) 1986-06-04 1986-06-04 Mouth tube processing method for polyethylene terephthalate resin bottle primary molded products

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JPS62284724A JPS62284724A (en) 1987-12-10
JP2545509B2 true JP2545509B2 (en) 1996-10-23

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Cited By (1)

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KR100988091B1 (en) * 2002-08-20 2010-10-18 가부시키가이샤 요시노 고교쇼 Jig for use in the method for hot crystallization of neck portion in preform of biaxial stretch blow molded bottle

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US5472660A (en) * 1989-03-08 1995-12-05 Fortex, Inc. Method for the manufacture of shaped products of biaxially oriented polymeric material
US6093364A (en) * 1989-03-08 2000-07-25 Fortex, Inc. Method for producing a biaxially oriented open-ended container
US5328655A (en) * 1989-03-08 1994-07-12 Fortex, Inc. Method and apparatus for the manufacture of shaped products of biaxially oriented polymeric material
JPH11235751A (en) * 1998-02-20 1999-08-31 Ueno Hiroshi Crystallization of plastic molded object
US7033656B2 (en) 2002-04-12 2006-04-25 Graham Packaging Pet Technologies, Inc. Graded crystallization of container finishes
US6884382B2 (en) * 2003-01-24 2005-04-26 Graham Packaging Pet Technologies Inc. Stretched container threads and method of manufacture

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JPS58217326A (en) * 1982-06-11 1983-12-17 Toyo Seikan Kaisha Ltd Manufacture of bottle made of saturated polyester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100988091B1 (en) * 2002-08-20 2010-10-18 가부시키가이샤 요시노 고교쇼 Jig for use in the method for hot crystallization of neck portion in preform of biaxial stretch blow molded bottle

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