JPS63197604A - Preparation of preform for draw blow molding - Google Patents
Preparation of preform for draw blow moldingInfo
- Publication number
- JPS63197604A JPS63197604A JP2806887A JP2806887A JPS63197604A JP S63197604 A JPS63197604 A JP S63197604A JP 2806887 A JP2806887 A JP 2806887A JP 2806887 A JP2806887 A JP 2806887A JP S63197604 A JPS63197604 A JP S63197604A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- preform
- trunk
- cylindrical body
- container
- 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 title claims description 6
- 238000002360 preparation method Methods 0.000 title 1
- 229920003023 plastic Polymers 0.000 claims abstract description 11
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000012611 container material Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 235000013405 beer Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 235000016795 Cola Nutrition 0.000 description 1
- 235000011824 Cola pachycarpa Nutrition 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 235000019987 cider Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002875 fluorescence polarization Methods 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-L isophthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC(C([O-])=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-L 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920006249 styrenic copolymer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は延伸ブロー成形用のプリフォーム（予備成形体
）の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing a preform for stretch blow molding.
（従来技術）
延伸ブロー成形プラスチックびん、特にポリエステルび
んは、その優れた透明性と適度なガスバリヤ−性とによ
り、液体洗剤、シャンプー、化粧品、醤油、ソース等の
液体用容器の外に、ビール、コーラ、サイダー等の炭酸
飲料や、果汁、ミネラルクォータ等の飲料用容器に広く
使用されている。(Prior Art) Stretch-blow-molded plastic bottles, especially polyester bottles, have excellent transparency and appropriate gas barrier properties, so they are used not only as containers for liquids such as liquid detergents, shampoos, cosmetics, soy sauce, and sauces, but also for beer, beer, etc. Widely used in containers for carbonated drinks such as cola and cider, fruit juices, mineral quarters, and other beverages.
この種のプラスチックびんは、最終容器より寸法がかな
り小さく且つ一般に試験管形状の有底管状体（プリフォ
ーム）を、その素材プラスチックの延伸温度範囲内にお
いてブロー金型中で軸方向に引張延伸すると共に、周方
向にブロー延伸することにより製造されている。This type of plastic bottle is produced by stretching a bottomed tubular body (preform), which is considerably smaller in size than the final container and generally in the shape of a test tube, in the axial direction in a blow mold within the stretching temperature range of the plastic material. It is also manufactured by blow stretching in the circumferential direction.
このプラスチックびんの製造方法において使用されてい
る上記プリフォームの製造方法として、素材プラスチッ
クの押出により製造されたバイブを所定長さに切断し、
その一端部を熱融着して閉塞端部を形成せしめ、更にそ
の他端部に最終容器の口頚部に対応する首部を形成せし
めてプリフォームとする、所謂パイプ法が知られている
。As a method for manufacturing the preform used in this method for manufacturing plastic bottles, a vibrator manufactured by extruding raw material plastic is cut into a predetermined length,
A so-called pipe method is known in which one end of the preform is heat-sealed to form a closed end, and the other end is formed with a neck corresponding to the mouth and neck of the final container.
（従来技術の問題点）
然るに、プリフォームの軸方向寸法及び周方向寸法は、
最終容器における軸方向及び周方向への罵伸倍率との関
連で決定しなければならない。(Problems with the prior art) However, the axial and circumferential dimensions of the preform are
It must be determined in relation to the axial and circumferential expansion ratios of the final container.
而して上記パイプ法によりプリフォームを製造する場合
、プリフォームの軸方向寸法は延伸倍率に応じて任意に
設定し得るものの、周方向寸法（径）はパイプ径によっ
て定まるため、周方向延伸倍率に応じて任意に設定する
ことが困難である。When manufacturing a preform using the above-mentioned pipe method, the axial dimension of the preform can be set arbitrarily according to the stretching ratio, but the circumferential dimension (diameter) is determined by the pipe diameter, so the circumferential stretching ratio It is difficult to set it arbitrarily depending on the situation.
例えば最終容器の胴径にパイプ径が接近している様な場
合には、最終容器胴部に有効な周方向の分子配向を与え
ることが困難となり、容器胴部に周方向の分子配向が十
分に付与されなければ、内容物として充填される炭酸ガ
ス等による内圧によって胴壁が周方向に膨張し、この膨
張により胴壁に貼着したラベルが離脱するというような
不都合を生じるのである。For example, if the pipe diameter is close to the body diameter of the final container, it will be difficult to provide effective circumferential molecular orientation to the final container body. If this is not applied, the barrel wall will expand in the circumferential direction due to the internal pressure caused by the carbon dioxide gas filled as the contents, and this expansion will cause problems such as the label attached to the barrel wall coming off.
（発明の目的）
従って本発明の目的は、最終容器形状に応じて延伸倍率
を任意に設定でき、容器胴部に十分な分子配向を付与す
ることが可能なプリフォームの製造方法を提供するにあ
る。(Objective of the Invention) Therefore, the object of the present invention is to provide a method for manufacturing a preform that can arbitrarily set the stretching ratio according to the final container shape and that can impart sufficient molecular orientation to the container body. be.
本考案の他の目的は、バイブ法によるプリフォームの製
造において、パイプ径を変更することなく延伸倍率を変
更することが可能な方法を提供するにある。Another object of the present invention is to provide a method in which the stretching ratio can be changed without changing the pipe diameter in the production of preforms by the vibrator method.
（発明の構成）
本発明によれば、閉塞底部を有するプラスチック製有底
管状体（プリフォーム）の胴部を、胴部径が該管状体の
首部径よりも小となる様に絞り加工することを特徴とす
る延伸プロー成荊用プリフォームの製造方法が提供され
る。(Structure of the Invention) According to the present invention, the body of a bottomed plastic tubular body (preform) having a closed bottom is drawn so that the body diameter is smaller than the neck diameter of the tubular body. There is provided a method for producing a preform for stretch protrusion, which is characterized by the following.
（発明の好適態様の説明）
本発明を以下添附図面に示す具体例に基づいて説明する
。(Description of preferred embodiments of the invention) The present invention will be described below based on specific examples shown in the accompanying drawings.
本発明プリフォームの製造方法における各工程を示す第
１図において、容器素材であるプラスチックの押出成形
により得られたパイプを所定長さに切断し、管状体１を
製造する（工程（Ａ））。In FIG. 1 showing each step in the method for manufacturing a preform of the present invention, a pipe obtained by extrusion molding of plastic, which is a container material, is cut into a predetermined length to manufacture a tubular body 1 (step (A)). .
本発明において、容器素材のプラスチックとしては、容
器素材として公知のプラスチック、例えばアイツタクチ
イック・ポリプロピレン、結晶性プロピレン−エチレン
共重合体、結晶性プロピレン−ブテン−１共重合体、結
晶性プロピレン−ブテン−１−エチレン共重合体、エチ
レン−ビニルアルコール共重合体、等のオレフィン径樹
脂；ポリエチレンテレフタレート、ポリブチレンテレフ
タレート、ポリエチレンテレフタレート／イソフタレー
ト等のポリエステル；ナイロン６、ナイロン６．６．ナ
イロン６．１０等のポリアミド；ポリスチレン、スチレ
ン−ブタジェンブロック共重合体、スチレン−アクリロ
ニトリル共重合体、スチレン−ブタジェン−アクリロニ
トリル共重合体（ＡＢＳ樹脂）等のスチレン系共重合体
；ポリ塩化ビニル、塩化ビニル−酢酸ビニル共重合体等
の塩化ビニル系共重合体；ポリメチルメタクリレート、
メチルメタクリレート・エチルアクリレート共重合体等
のアクリル系共重合体；ポリカーボネート等が使用され
る。これらの熱可塑性樹脂は単独で使用しても或いは２
ｆ１以上のブレンド物の形で存在していてもよい。In the present invention, the plastic for the container material includes plastics known as container materials, such as tactical polypropylene, crystalline propylene-ethylene copolymer, crystalline propylene-butene-1 copolymer, and crystalline propylene-butene. - Olefin diameter resins such as -1-ethylene copolymer, ethylene-vinyl alcohol copolymer, etc.; Polyesters such as polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate/isophthalate; nylon 6, nylon 6.6. Polyamides such as nylon 6.10; styrenic copolymers such as polystyrene, styrene-butadiene block copolymers, styrene-acrylonitrile copolymers, and styrene-butadiene-acrylonitrile copolymers (ABS resins); polyvinyl chloride, Vinyl chloride copolymers such as vinyl chloride-vinyl acetate copolymers; polymethyl methacrylate,
Acrylic copolymers such as methyl methacrylate/ethyl acrylate copolymers; polycarbonates, etc. are used. These thermoplastic resins can be used alone or in combination.
It may also exist in the form of a blend of f1 or more.
また前記パイプは単層の構成でもよいし、例えば同時溶
融押出による２層以上の積層構成であってもよい。Further, the pipe may have a single layer structure, or may have a laminated structure of two or more layers, for example, by simultaneous melt extrusion.
本発明においては、パイプの切断により得られた管状体
１の一方側の端面に閉塞底部２を形成し、有底管状体３
とする（工程（Ｂ））。In the present invention, a closed bottom portion 2 is formed on one end surface of a tubular body 1 obtained by cutting a pipe, and a bottomed tubular body 3 is formed.
(Step (B)).
底部゛の成形は、パイプの一方の端面を適切な温度に加
熱し金型内に挟み高圧エアーを吹き込むことにより行な
われる。The bottom part is formed by heating one end of the pipe to an appropriate temperature, placing it in a mold, and blowing high-pressure air into it.
本発明によれば、かくして得られた有底管状体３を絞り
加工に賦し、その胴部４の径ｌが首部５の径ｍよりも小
となる様にする（工程（Ｃ））。According to the present invention, the bottomed tubular body 3 thus obtained is subjected to a drawing process so that the diameter l of the body portion 4 is smaller than the diameter m of the neck portion 5 (step (C)).
かかる絞り加工を行なうことにより、胴部の肉厚を薄く
することなく、むしろ胴部肉厚を厚くしながら元のパイ
プ径に比して胴部径を小さくすることが可能となり、か
くして最終容器の胴部径に応じて十分な分子配向を与え
ることが可能となるのである。この場合絞り比Ａ／ｍは
、最終容器の胴部径に応じて適宜窓めればよい。By performing such a drawing process, it is possible to make the body diameter smaller than the original pipe diameter while increasing the body wall thickness without reducing the body wall thickness, and thus the final container. This makes it possible to provide sufficient molecular orientation depending on the diameter of the body. In this case, the aperture ratio A/m may be adjusted as appropriate depending on the diameter of the body of the final container.
この絞り加工は、それ自体公知の方法で行なうことがで
き、例えば第１図に示されている如く、有底管状体３の
全体を適当な温度に加熱し、これを目的とする形状に適
合する様なキャビティ空間を有する金型１０内に挟持せ
しめ、必要により押出ポンチ（図示せず）を挿入するこ
とによって行なうことができる。This drawing process can be carried out by a method known per se. For example, as shown in FIG. This can be done by holding the mold 10 in a mold 10 having a cavity space like this, and inserting an extrusion punch (not shown) if necessary.
絞り加工が行なわれ、胴部が小径となった有底管状体６
は、その首部５に容器口頚部に対応するネジ部７が形成
され、有底プリフォーム８とされる（工程（Ｄ））。A bottomed tubular body 6 that has been subjected to drawing processing and has a small diameter body.
A threaded portion 7 corresponding to the neck portion of the container is formed on the neck portion 5 to form a bottomed preform 8 (step (D)).
ネジ部７の形成は、該首部５を適当な温度に加熱し、ネ
ジ金型に挟み高圧エアーを吹き込むことによって容易に
行なわれる。勿論４の様なネジ部７は、プリフォーム本
体とは別個に射出成形により製造し、該プリフォーム本
体とネジ部とを射出金型内又は射出金型外で融着一体化
することによっても形成され得る。The threaded portion 7 is easily formed by heating the neck portion 5 to an appropriate temperature, placing it between screw molds, and blowing high pressure air into the neck portion 5. Of course, the threaded part 7 like 4 can also be manufactured by injection molding separately from the preform main body, and the preform main body and the threaded part are fused and integrated inside or outside the injection mold. can be formed.
尚、この様なネジ部７は、絞り加工前の段階で形成させ
てもよいし、上記の様に絞り加工後の段階で形成しても
よい。Incidentally, such a threaded portion 7 may be formed at a stage before the drawing process, or may be formed at a stage after the drawing process as described above.
また本発明において、前述した絞り加工に際しては、首
部５と胴部４との接続部２０は、図示される如く一定の
傾斜勾配を形成する様に、金型１０等の形状を規定する
ことが好適である。Furthermore, in the present invention, during the drawing process described above, the shape of the mold 10 etc. may be defined so that the connecting portion 20 between the neck portion 5 and the body portion 4 forms a constant slope as shown in the figure. suitable.
この接続部２０は、通常最終容器の肩部に相当する部分
であるため、該接続部２０が水平面を形成する様な場合
、即ち首部５から胴部４への移行が階段状となる様な場
合には、接続部２０の延伸が不規則に行なわれ、形成さ
れたびんの首部から胴部に至る肩部に厚みが不規則に変
動する部分が発生し、厚みの変動に起因するレンズ効果
によって、この容器を観察した場合、容器内部が著しく
歪んで見え、容器自体の外観が不良となってその商品価
値を低下する傾向があるのである。This connecting portion 20 usually corresponds to the shoulder of the final container, so if the connecting portion 20 forms a horizontal surface, that is, the transition from the neck 5 to the body 4 is step-like. In some cases, the connecting portion 20 is stretched irregularly, and a portion of the formed bottle from the neck to the body has irregularly varying thickness, resulting in a lens effect due to the variation in thickness. As a result, when the container is observed, the inside of the container appears to be significantly distorted, resulting in a poor appearance of the container itself, which tends to reduce its commercial value.
前述した様に、接続部２０が傾斜勾配を形成している様
な場合には、上記の様な不都合は有効に防止できる。As described above, when the connecting portion 20 forms an inclined slope, the above-mentioned disadvantages can be effectively prevented.
また前述した絞り加工に際しては、絞り加工と同時にエ
アーを吹き込むことによフて、その底部を任意の形状と
することも可能である。Further, during the drawing process described above, it is also possible to form the bottom part into an arbitrary shape by blowing air at the same time as the drawing process.
上述した本発明方法において、製造されたプリフォーム
を冷却することなく、そのまま延伸ブロー成形する所謂
１ステージ法を適用する場合には、絞り加工に際して用
いる金型を利用してプリフォームの温度調整を行なうこ
とが可能である。In the method of the present invention described above, when applying the so-called one-stage method in which the manufactured preform is stretch-blow-molded as it is without cooling, the temperature of the preform is adjusted using the mold used during the drawing process. It is possible to do so.
かくして得られたプリフォームは、それ自体公知の延伸
ブロー成形に賦されて最終容器とされる。The preform thus obtained is subjected to stretch blow molding, which is known per se, to form the final container.
先ず、延伸ブロー成形に際しては、プリフォームを、熱
風、赤外線ヒーター、高周波誘電加熱等の手段で延伸適
正温度迄予備加熱する。その温度範囲は、８５〜１２０
℃、特に９５乃至１１０℃の範囲にあるのがよい。First, in stretch blow molding, the preform is preheated to an appropriate temperature for stretching using means such as hot air, an infrared heater, and high frequency dielectric heating. Its temperature range is 85-120
The temperature is preferably in the range of 95 to 110°C.
このプリフォームを、それ自体公知の延伸ブロー成形機
中に供給し、金型内にセットして、延伸棒の押込みによ
り軸方向に引張延伸すると共に、流体の吸込みによる周
方向へのブロー延伸をする。この際、軸方向延伸倍率よ
りも周方向延伸倍率が大きく、その結果として周方向の
分子配向が軸方向の分子配向よりも高度に行われるよう
にする０周方向の分子配向が軸方向の分子配向よりも高
度に生じている事実は、びん胴部のポリエステル壁を、
螢光偏光法による面内配向測定法に付し、軸方向配向係
数と周方向係数とを対比することにより確認される。This preform is fed into a stretch blow molding machine known per se, set in a mold, and stretched in the axial direction by pushing a stretch rod, and blow stretched in the circumferential direction by suction of fluid. do. At this time, the stretching ratio in the circumferential direction is larger than the stretching ratio in the axial direction, so that as a result, the molecular orientation in the circumferential direction is more highly oriented than the molecular orientation in the axial direction. The fact that the polyester wall of the bottle body
This is confirmed by comparing the axial orientation coefficient and the circumferential orientation coefficient using an in-plane orientation measurement method using fluorescence polarization.
（発明の効果）
本発明によれば、プリフォームの胴部径をその肉厚を薄
くすることなく種々変化させることが可能である。(Effects of the Invention) According to the present invention, it is possible to vary the diameter of the body of the preform without reducing its wall thickness.
従って、特にパイプからプリフォームを製造する場合、
バイブ径に制限されずに、最終形状の容°器に高度の分
子配向を与える様なプリフォームを製造することができ
る。即ち、延伸倍率を適宜調整し得るのであって、十分
な強度を有する容器が得られるという顕著な利点が達成
される。Therefore, especially when manufacturing preforms from pipes,
It is possible to manufacture preforms that impart a high degree of molecular orientation to the final shape of the container without being limited by the diameter of the vibrator. That is, the stretching ratio can be adjusted appropriately, and a remarkable advantage is achieved in that a container having sufficient strength can be obtained.
第１図は、本発明の製造方法の一例を示す工程図である
。FIG. 1 is a process diagram showing an example of the manufacturing method of the present invention.
Claims (3)
リフォーム）の胴部を、胴部径が該管状体の首部径より
も小となる様に絞り加工することを特徴とする延伸ブロ
ー成形用プリフォームの製造方法。(1) Stretch blow molding characterized by drawing the body of a bottomed plastic tubular body (preform) having a closed bottom so that the body diameter is smaller than the neck diameter of the tubular body. method for manufacturing preforms for
イプから製造されたものである特許請求の範囲第１項記
載の製造方法。(2) The manufacturing method according to claim 1, wherein the bottomed tubular body is manufactured from a pipe formed by extrusion molding.
に容器口頚部に対応する部分を形成せしめる特許請求の
範囲第１項記載の製造方法。(3) The manufacturing method according to claim 1, wherein a portion corresponding to the neck of the container is formed in the neck of the bottomed tubular body before or after the drawing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2806887A JPS63197604A (en) | 1987-02-12 | 1987-02-12 | Preparation of preform for draw blow molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2806887A JPS63197604A (en) | 1987-02-12 | 1987-02-12 | Preparation of preform for draw blow molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63197604A true JPS63197604A (en) | 1988-08-16 |
| JPH0560407B2 JPH0560407B2 (en) | 1993-09-02 |
Family
ID=12238447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2806887A Granted JPS63197604A (en) | 1987-02-12 | 1987-02-12 | Preparation of preform for draw blow molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63197604A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133563A (en) * | 1978-04-08 | 1979-10-17 | Mitsubishi Plastics Ind Ltd | Manufacturing of blown bottle |
-
1987
- 1987-02-12 JP JP2806887A patent/JPS63197604A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133563A (en) * | 1978-04-08 | 1979-10-17 | Mitsubishi Plastics Ind Ltd | Manufacturing of blown bottle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0560407B2 (en) | 1993-09-02 |
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