JPH0615196B2 - Method for manufacturing container having extremely small diameter portion - Google Patents
Method for manufacturing container having extremely small diameter portionInfo
- Publication number
- JPH0615196B2 JPH0615196B2 JP61151410A JP15141086A JPH0615196B2 JP H0615196 B2 JPH0615196 B2 JP H0615196B2 JP 61151410 A JP61151410 A JP 61151410A JP 15141086 A JP15141086 A JP 15141086A JP H0615196 B2 JPH0615196 B2 JP H0615196B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- small diameter
- diameter portion
- parison
- extremely small
- 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
- 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
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/4247—Means for deforming the parison prior to the blowing operation using spreading or extending means
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (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、目薬容器・スポイント・比重かんなどのよう
に一部分が極小径となつた容器を射出吹込成形法で製造
する方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for producing a container such as an eye drop container, a spot, a specific gravity can, etc., a part of which has a very small diameter by an injection blow molding method.
従来の技術 射出吹込成形法はパリソンを射出成形後に、そのパリソ
ンよりコア型を抜き、パリソンを所定の型内にセツトし
てエアを吹き込んで所定形状とするものである。2. Description of the Related Art In the injection blow molding method, after molding a parison, a core mold is removed from the parison, the parison is set in a predetermined mold and air is blown into the parison to have a predetermined shape.
発明が解決しようとする問題点 かかる射出吹込成形法によつて中空の容器を製造する際
には、パリソンを射出形成する場合にコア型の型が下記
の軸で制限されるので極小のパリソンを射出成形でき
ず、極小径部分を有する容器を製造できない。Problems to be Solved by the Invention In manufacturing a hollow container by such an injection blow molding method, when forming a parison by injection molding, the core mold is restricted by the following axis, so that a very small parison is used. It cannot be injection-molded and a container having a very small diameter cannot be manufactured.
つまり、コア型は射出時に圧力を受けるので、あまり小
径とするとその圧力で曲がつてしまうと共に、コア型は
温度制御のため中空にして中に冷水、温水、熱媒体、サ
ーモパイプを入れるので物理的にあまり小径とすること
ができない。なお、前述のような極小径部分を有する容
器は中空成形により製造できるが、中空成形で製造した
容器は開口部の寸法精度が悪く、表面もきたないので後
仕上加工を必要とするから、製造工程が複雑となると共
に、材料のロスも多く、しかもパリソンコントローラー
等で肉厚をある程度まで調整できるが限度があり、射出
吹込成形法まではできない問題点を有し、これに対して
射出吹込成形法によつて製造した容器は開口部の精度が
良く、表面もきれいになるので後仕上加工を必要としな
いから、製造工程が単純で材料のロスも少なくなり、し
かも肉厚の調整の自由度が中空成形法より大きくできる
利点を有する。In other words, since the core mold receives pressure during injection, if it is made too small in diameter, it will bend due to that pressure, and the core mold will be hollow for temperature control and cold water, hot water, heat medium, and thermo pipe will be put in it The diameter cannot be too small. It should be noted that the container having the extremely small diameter portion as described above can be manufactured by hollow molding, but since the container manufactured by hollow molding has poor dimensional accuracy of the opening and the surface is messy, it requires post-finishing processing. The process is complicated, there are many material losses, and the wall thickness can be adjusted to some extent with a parison controller, but there is a limit, and there is a problem that the injection blow molding method cannot be done. The container manufactured by the method has a high precision opening and a clean surface, so no post-finishing is required, so the manufacturing process is simple, material loss is small, and the degree of freedom in adjusting the wall thickness is high. It has the advantage that it can be made larger than the hollow molding method.
そこで、本発明は極小径部分を有する容器を射出吹込成
形法で製造できるようにすることを目的とするものであ
る。Therefore, an object of the present invention is to make it possible to manufacture a container having an extremely small diameter portion by an injection blow molding method.
問題点を解決するための手段及び作用 射出成形したパリソンの一部分を引張つて極小部を形成
し、その後に所定の型内にセツトしてエアを吹き込んで
極小径部を有する容器を製造するようにして、コア型の
径の制限によつて決定されるパリソンの最小径よりも小
径なる極小径部を有する容器を製造できるようにしたも
のである。Means and Actions for Solving the Problems A part of the injection-molded parison is pulled to form a minimum portion, and then it is set in a predetermined mold and air is blown into it to manufacture a container having a minimum diameter portion. Thus, it is possible to manufacture a container having an extremely small diameter portion smaller than the minimum diameter of the parison, which is determined by the restriction of the diameter of the core type.
実施例 パリソン射出成形後にパリソンよりコア型を抜いて第１
図(a)に示すような長尺小径の袋状のパリソン１を得
る。Example 1 After removing the core mold from the parison after the parison injection molding,
A bag-shaped parison 1 having a long and small diameter as shown in FIG.
このパリソン１を第１図(b)に示すように、一端部と他
端部を固定クランパ２と可動クランパ３で把握すると共
に、可動クランパ３を移動してパリソン１を引張つて中
間部分を射出時に得られたパリソン径d1よりも小径d2な
る極小径部分１′とする。The parison 1 is grasped at one end and the other end by the fixed clamper 2 and the movable clamper 3 as shown in FIG. 1 (b), and the movable clamper 3 is moved to pull the parison 1 to eject the intermediate portion. and very small diameter portion 1 'of the small diameter d 2 than the parison diameter d 1 obtained when.
なお、一対の可動クランパで把持して一対の可動クラン
パを離隔する方向に移動して極小径部分を形成しても良
い。It should be noted that the pair of movable clampers may be gripped and moved in the direction in which the pair of movable clampers are separated from each other to form the minimum diameter portion.
第１図(c)に示すように所定の形状の型４内に引張りし
たパリソン１をセツトし、エアーを吹き込んで第１図
(d)に示すように型４内に圧着して容器５を吹込製造
し、この後に型４より取り出して第１図(e)に示すよう
に極小径部分５′を有する容器５を得る。As shown in FIG. 1 (c), the pulled parison 1 is set in a mold 4 having a predetermined shape, and air is blown into the mold to set it in FIG.
As shown in (d), the container 5 is pressure-bonded into the mold 4 to blow-manufacture it, and then the container 5 is taken out from the mold 4 to obtain a container 5 having a very small diameter portion 5'as shown in FIG. 1 (e).
なお、パリソン１を引張つて極小径部を形成した後に再
加熱、あるいは予備吹込み、吹込み、延伸あるいはこれ
らの組合せの工程を進むことで極小径部を有する容器と
しても良い。The parison 1 may be pulled to form the extremely small diameter portion, and then reheated, or pre-blown, blown, stretched, or a combination thereof may be performed to obtain a container having the extremely small diameter portion.
発明の効果 パリソン射出成形時に用いるコア型の径の制限によつて
決定されるパリソンの最小径よりも小径なる極小径部を
有する容器を射出吹込成形法によつて製造できる。EFFECTS OF THE INVENTION A container having an extremely small diameter portion smaller than the minimum diameter of the parison determined by the diameter limitation of the core mold used during parison injection molding can be manufactured by the injection blow molding method.
したがつて、目薬容器、スポイトのようにポンピングな
どで滴下させる液体の容器や、比重かんのように上下両
方向に極小径部を有する容器等で射出吹込成形法によつ
て簡単に製造できる。Therefore, it can be easily manufactured by an injection blow molding method using an eye drop container, a liquid container such as a dropper that is dropped by pumping or the like, or a container such as a specific gravity container having a minimum diameter portion in both upper and lower directions.
第１図(a)〜(e)は本発明の一実施例を示す工程順説明図
である。 １はパリソン、１′は極小径部、５は容器、５′は極小
径部。1 (a) to 1 (e) are process order explanatory diagrams showing one embodiment of the present invention. 1 is a parison, 1'is a very small diameter part, 5 is a container, 5'is a very small diameter part.
Claims (1)
て極小径部１′を形成し、この後に所定の型４内にセツ
トしてエアを吹き込んで極小型部５′を有する容器とす
ることを特徴とする極小径部を有する容器の製造方法。1. A container having an extremely small portion 5'by forming a small diameter portion 1'by pulling a part of an injection-molded parison 1 and then setting it in a predetermined mold 4 and blowing air. A method for manufacturing a container having an extremely small diameter portion, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151410A JPH0615196B2 (en) | 1986-06-30 | 1986-06-30 | Method for manufacturing container having extremely small diameter portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151410A JPH0615196B2 (en) | 1986-06-30 | 1986-06-30 | Method for manufacturing container having extremely small diameter portion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS637927A JPS637927A (en) | 1988-01-13 |
| JPH0615196B2 true JPH0615196B2 (en) | 1994-03-02 |
Family
ID=15517992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61151410A Expired - Lifetime JPH0615196B2 (en) | 1986-06-30 | 1986-06-30 | Method for manufacturing container having extremely small diameter portion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615196B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5087394A (en) * | 1989-11-09 | 1992-02-11 | Scimed Life Systems, Inc. | Method for forming an inflatable balloon for use in a catheter |
| WO2019108690A1 (en) | 2017-11-30 | 2019-06-06 | Corning Incorporated | Stretch blow molded pipette, and system and method for forming same |
-
1986
- 1986-06-30 JP JP61151410A patent/JPH0615196B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS637927A (en) | 1988-01-13 |
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