JPH043727B2 - - Google Patents
Info
- Publication number
- JPH043727B2 JPH043727B2 JP23350483A JP23350483A JPH043727B2 JP H043727 B2 JPH043727 B2 JP H043727B2 JP 23350483 A JP23350483 A JP 23350483A JP 23350483 A JP23350483 A JP 23350483A JP H043727 B2 JPH043727 B2 JP H043727B2
- Authority
- JP
- Japan
- Prior art keywords
- blow
- ethylene
- propylene
- transparency
- polypropylene resin
- 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
- -1 polypropylene Polymers 0.000 claims description 19
- 239000004743 Polypropylene Substances 0.000 claims description 13
- 229920001155 polypropylene Polymers 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 10
- 239000005977 Ethylene Substances 0.000 claims description 10
- 238000010103 injection stretch blow moulding Methods 0.000 claims description 8
- 229920005604 random copolymer Polymers 0.000 claims description 8
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 4
- 238000000034 method Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 238000000071 blow moulding Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
-
- 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
- B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
-
- 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/16—Biaxial stretching during blow-moulding using pressure difference for pre-stretching, e.g. pre-blowing
-
- 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
- B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
-
- 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
- B29C49/6472—Heating or cooling preforms, parisons or blown articles in several stages
-
- 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
- B29C49/78—Measuring, controlling or regulating
- B29C2049/7879—Stretching, e.g. stretch rod
-
- 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/087—Means for providing controlled or limited stretch ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0094—Condition, form or state of moulded material or of the material to be shaped having particular viscosity
Landscapes
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
本発明は透明性に優れ、偏肉のないブロー成形
容器に関する。
ポリプロピレン樹脂は、耐熱性、耐薬品性、安
全衛生面に優れ、そのブロー成形品は剛性、衝撃
強度にも優れるため、食品容器、洗剤容器、医療
容器等に広く使用されている。しかしながら、ブ
ロー成形品は透明性が不十分であるため、市場か
らの透明性要求に十分に応えていないのが実状で
ある。
従来、ポリプロピレン樹脂の透明性改良方法と
して、造核剤を添加する方法、プロピレンにエチ
レンを共重合させる方法等が知られているが、通
常のブロー成形法にあつてはこれらの対策を行な
つても十分な透明性を得ることが困難である。
また、従来から行なわれているブロー成形で
は、通常、この為に用いるポリプロピレン樹脂
は、剛性、透明性等が良好であるのでそのメルト
フローインデツクス（MFI）が高々４ｇ／10分
程度のものであり、特に１〜２ｇ／10分程度のも
のが多用されている。
一方、近年、射出延伸ブロー成形法が開発さ
れ、これによるブロー成形品も試作されている
が、十分な透明性と偏肉のないポリプロピレン樹
脂製ブロー成形容器は得られていないのが実状で
ある。
本発明者らは、射出延伸ブロー成形法で透明性
に優れ、かつ、偏肉性のないポリプロピレン樹脂
製ブロー成形容器を得ることを検討した結果、特
定のエチレン含有量かつ特定のMFIを有するプ
ロピレン−エチレン共重合体をポリプロピレン樹
脂として用いたならば良好なブロー成形容器を得
ることができることを見出し、遂に本発明に到達
した。
即ち、本発明は、プロピレンとエチレンのラン
ダム共重合体を射出延伸ブロー成形したポリプロ
ピレン製容器であつて、該プロピレン−エチレン
ランダム共重合体がエチレン含有量１〜６重量％
からメルトフローインデツクス４〜50ｇ／10分の
ものであることを特徴とする透明性に優れ、偏肉
のないポリプロピレン樹脂製ブロー成形容器であ
る。
本発明に用いるプロピレン樹脂はプロピレン−
エチレンランダム共重合体であり、エチレン含有
量は１〜６重量％であることがブロー成形品の透
明性の上から望ましく、かつMFIが４〜50ｇ／
10分であることが望ましい。
エチレン含有量が１重量％未満のものでは偏肉
性が著しく成形性が不良となる。また、６重量％
を越えるものでは得られるブロー容器の剛性が不
足するため使用できないものとなる。
MFIが４ｇ／10分未満のものでは十分な透明
性が得られず、50ｇ／10分を越えるものでは偏肉
が著しくなるため安定して良好な容器を得ること
ができない。
なお、プロピレン−エチレンブロツク共重合体
では本発明の優れたブロー成形容器をうることが
できない。
本発明においては、透明性が更に良好になるの
で造核剤を添加しておくことができる。その場合
にはプロピレン−エチレンランダム共重合体に対
し１重量％以下が適当である。
更に、酸化防止剤、紫外線吸収剤、帯電防止
剤、着色剤、滑剤などの添加剤や、他の樹脂やエ
ラストマーが添加配合されたものであつてもよ
い。
本発明の成形法である射出延伸ブロー成形法と
は、有底パリソンを射出成形によつて成形し、次
いで予備ブロー、延伸温度調整後、延伸ブローす
ることによつて製品を得る成形法であり、延伸の
方法としてはロツドによる機械的なたて延伸とエ
アー吹込による方法の組合せが行なわれる。この
成形法に適した成形機としては、例えば日精
ASB機械株式会社製射出延伸ブロー成形機ASB
−50、ASB−150、ASB−250、ASB−650等が
あげられる。
本発明において、特に優れた透明性を得るに
は、例えば成形機として射出延伸ブロー成形機
ASB−50を用いた場合、下記の条件が望ましい。
射出成形温度： 200〜260℃
予備ブロー延伸倍率： 縦1.0〜1.8倍、
横1.2〜2.0倍
予備ブローエアー圧力： ３〜７Kg／cm2
延伸温度調整金形温度： 90〜140℃
延伸ブロー延伸倍率： 縦1.2〜3.5倍、
横1.2〜6.0倍
延伸ブローエア圧力： ４〜20Kg／cm2
本発明のポリプロピレン製ブロー容器は、ポリ
プロピレンに安定剤、帯電防止剤、紫外線吸収
剤、着色剤、造核助剤等の添加剤を添加したの
ち、通常上記射出延伸ブロによりその胴部肉厚が
0.2〜1.0mmに製造される。また、きわめて透明性
に優れ、かつ耐熱性、耐衝撃性等にも優れるの
で、その性質を利用して食品容器、洗剤容器、シ
ヤンプー容器、トイレタリー容器、医療容器等に
好適に使用できる。
以下、実施例により本発明を詳細に説明する。
なお、胴部霞度は日本電色社製のヘイズメータ
ーを用い、JIS Ｋ−6714に記載された方法に従つ
て測定したものである。
実施例 １
ポリプロピレン樹脂として、エチレン含有量４
重量％、MFI15ｇ／10分であり、かつ造核助剤
0.3重量％含むプロピレン−エチレンランダム共
重合体を、射出延伸ブロー成形機ASB−50を用
い、下記条件で成形して、胴部直径70mm、内容量
500mlの丸型ボトルを成形した。
射出成形温度： 220℃
射出成形金型温度： 15℃
予備ブロー延伸倍率： 縦１倍、横1.4倍
予備ブローエア圧力： ５Kg／cm2
延伸温度調整金型温度： 100℃
延伸ブロー延伸倍率： 縦1.8倍、横1.2倍
延伸ブローエア圧力： ９Kg／cm2
得られたボトルはその重量が24ｇであり、透明
性の極めて優れたポリプロピレン製ブロー成形容
器であつた。また胴部の肉厚は0.53mmで、霞度は
3.1％であり、内容液を入れたときの透明性も良
好であつた。
実施例２〜４、比較例１〜３
実施例１において、ポリプロピレン樹脂として
表１に示すエチレン含量及びMFIであるプロピ
レン−エチレン共重合体を用いる他は実施例１と
同様にして、丸型ボトルを成形した。
得られたボトルの性能を表１に示す。
The present invention relates to a blow-molded container with excellent transparency and no uneven thickness. Polypropylene resin has excellent heat resistance, chemical resistance, and safety and hygiene, and its blow-molded products also have excellent rigidity and impact strength, so it is widely used for food containers, detergent containers, medical containers, etc. However, since blow molded products have insufficient transparency, the reality is that they do not fully meet the market's demand for transparency. Conventionally, known methods for improving the transparency of polypropylene resin include adding a nucleating agent and copolymerizing propylene with ethylene, but these measures are not taken in normal blow molding methods. However, it is difficult to obtain sufficient transparency. In addition, in conventional blow molding, the polypropylene resin used for this purpose has good rigidity and transparency, so its melt flow index (MFI) is about 4 g/10 minutes at most. In particular, those with a concentration of about 1 to 2 g/10 minutes are often used. On the other hand, in recent years, an injection stretch blow molding method has been developed, and blow molded products using this method have also been prototyped, but the reality is that a polypropylene resin blow molded container with sufficient transparency and uneven thickness has not been obtained. . The present inventors investigated the use of injection stretch blow molding to obtain a polypropylene resin blow molded container with excellent transparency and no thickness unevenness. - It was discovered that a good blow-molded container could be obtained by using an ethylene copolymer as a polypropylene resin, and the present invention was finally achieved. That is, the present invention is a polypropylene container made by injection stretch blow molding of a random copolymer of propylene and ethylene, wherein the propylene-ethylene random copolymer has an ethylene content of 1 to 6% by weight.
This is a polypropylene resin blow-molded container with excellent transparency and no uneven thickness, characterized by a melt flow index of 4 to 50 g/10 minutes. The propylene resin used in the present invention is propylene-
It is an ethylene random copolymer, and the ethylene content is preferably 1 to 6% by weight from the viewpoint of transparency of the blow molded product, and the MFI is 4 to 50 g/
Preferably 10 minutes. If the ethylene content is less than 1% by weight, the unevenness of thickness will be significant and the moldability will be poor. Also, 6% by weight
If it exceeds this, the resulting blow container will not have sufficient rigidity and cannot be used. If the MFI is less than 4 g/10 minutes, sufficient transparency cannot be obtained, and if it exceeds 50 g/10 minutes, uneven thickness will become significant, making it impossible to obtain a stable and good container. Note that the excellent blow-molded container of the present invention cannot be obtained using a propylene-ethylene block copolymer. In the present invention, a nucleating agent can be added because the transparency is further improved. In that case, the appropriate amount is 1% by weight or less based on the propylene-ethylene random copolymer. Furthermore, additives such as antioxidants, ultraviolet absorbers, antistatic agents, colorants, and lubricants, as well as other resins and elastomers, may be added and blended. The injection stretch blow molding method, which is the molding method of the present invention, is a molding method in which a bottomed parison is molded by injection molding, and then a product is obtained by pre-blowing, stretching temperature adjustment, and stretch blowing. The stretching method is a combination of mechanical vertical stretching using a rod and air blowing. Examples of molding machines suitable for this molding method include Nissei
Injection stretch blow molding machine ASB manufactured by ASB Machinery Co., Ltd.
-50, ASB-150, ASB-250, ASB-650, etc. In the present invention, in order to obtain particularly excellent transparency, for example, an injection stretch blow molding machine is used as a molding machine.
When using ASB-50, the following conditions are desirable. Injection molding temperature: 200-260℃ Pre-blow stretch ratio: 1.0-1.8 times vertically, 1.2-2.0 times horizontally Pre-blow air pressure: 3-7Kg/cm 2 Stretching temperature adjustment mold temperature: 90-140℃ Stretch blow stretch ratio : 1.2 to 3.5 times vertical, 1.2 to 6.0 times horizontal Stretching blow air pressure: 4 to 20 Kg/ cm After adding additives such as additives, the thickness of the body is usually reduced by the above-mentioned injection stretching process.
Manufactured to 0.2-1.0mm. In addition, it has excellent transparency, heat resistance, and impact resistance, so it can be suitably used for food containers, detergent containers, shampoo containers, toiletry containers, medical containers, etc. by taking advantage of these properties. Hereinafter, the present invention will be explained in detail with reference to Examples. Incidentally, the body haze was measured using a haze meter manufactured by Nippon Denshoku Co., Ltd. according to the method described in JIS K-6714. Example 1 As a polypropylene resin, ethylene content is 4
Weight%, MFI 15g/10min, and nucleation aid
A propylene-ethylene random copolymer containing 0.3% by weight was molded using an injection stretch blow molding machine ASB-50 under the following conditions to obtain a body diameter of 70 mm and an inner volume.
A 500ml round bottle was molded. Injection molding temperature: 220℃ Injection mold temperature: 15℃ Pre-blow stretching ratio: 1x vertically, 1.4x horizontally Pre-blowing air pressure: 5Kg/cm 2 Stretching temperature adjustment mold temperature: 100℃ Stretch-blow stretching ratio: 1.8 vertically Stretching blowing air pressure: 9 Kg/cm 2 The obtained bottle weighed 24 g and was a polypropylene blow-molded container with extremely excellent transparency. In addition, the wall thickness of the body is 0.53mm, and the degree of haze is
The content was 3.1%, and the transparency when the content liquid was added was also good. Examples 2 to 4, Comparative Examples 1 to 3 In Example 1, a round bottle was prepared in the same manner as in Example 1, except that a propylene-ethylene copolymer having the ethylene content and MFI shown in Table 1 was used as the polypropylene resin. was molded. Table 1 shows the performance of the obtained bottle.
【表】
参考例 １
比較例１において用いたプロピレン−エチレン
ランダム共重合体を用い、押出延伸ブロー成形法
により得られた実施例１と同様のボトルでは胴部
肉厚（0.53mm）は均一であるが薄白く霞みがかか
り透明性は不十分で、その霞度は6.0％であつた。
尚、押出延伸ブロー成形法とは押出成形された
パイプを一定の長さに切断してパリソンを得、こ
れを延伸温度まで再加熱した後、延伸ブローする
ことによつて製品を得る成形法をいう。[Table] Reference Example 1 A bottle similar to Example 1 obtained by extrusion stretch blow molding using the propylene-ethylene random copolymer used in Comparative Example 1 had a uniform body wall thickness (0.53 mm). However, it was pale and hazy and had insufficient transparency, with a haze level of 6.0%. The extrusion stretch blow molding method is a molding method in which an extruded pipe is cut into a certain length to obtain a parison, which is then reheated to a stretching temperature and then stretch-blown to obtain a product. say.
Claims (1)
射出延伸ブロー成形して得られるポリプロピレン
樹脂製ブロー成形容器であつて、該プロピレン−
エチレンランダム共重合体がエチレン含有量１〜
６重量％かつメルトフローインデツクス４〜50
ｇ／10分のものであることを特徴とする透明性に
優れ、偏肉のないポリプロピレン樹脂製ブロー成
形容器。1 A blow-molded container made of polypropylene resin obtained by injection stretch blow-molding a random copolymer of propylene and ethylene, wherein the propylene-
Ethylene random copolymer has ethylene content of 1~
6% by weight and melt flow index 4-50
A blow-molded container made of polypropylene resin with excellent transparency and no uneven thickness, characterized by a weight per 10 g/10 min.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58233504A JPS60125628A (en) | 1983-12-13 | 1983-12-13 | Blow-molded container superior in transparency |
| EP87110734A EP0251340B1 (en) | 1983-12-13 | 1984-12-10 | Injection stretch-blow molding process |
| EP84115106A EP0151741A3 (en) | 1983-12-13 | 1984-12-10 | Injection stretch-blow molded container and resin composition therefor |
| DE3486446T DE3486446T2 (en) | 1983-12-13 | 1984-12-10 | Injection blow molding |
| AU36543/84A AU554076B2 (en) | 1983-12-13 | 1984-12-12 | Ethylene-propylene copolymer compositions and containers |
| CA000469959A CA1240446A (en) | 1983-12-13 | 1984-12-12 | Injection stretch-blow molded container and resin composition therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58233504A JPS60125628A (en) | 1983-12-13 | 1983-12-13 | Blow-molded container superior in transparency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60125628A JPS60125628A (en) | 1985-07-04 |
| JPH043727B2 true JPH043727B2 (en) | 1992-01-24 |
Family
ID=16956060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58233504A Granted JPS60125628A (en) | 1983-12-13 | 1983-12-13 | Blow-molded container superior in transparency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60125628A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163240A (en) * | 1987-12-18 | 1989-06-27 | Showa Denko Kk | Olefin resin composition for injection blow molding |
| JPH0250726U (en) * | 1988-10-04 | 1990-04-10 | ||
| WO2003077824A1 (en) * | 2002-03-18 | 2003-09-25 | Santen Pharmaceutical Co., Ltd. | High-temperature-sterilizable instillator |
| US20050249904A1 (en) * | 2004-01-23 | 2005-11-10 | Rajnish Batlaw | Articles and process of making polypropylene articles having ultraviolet light protection by injection stretch blow molding of polypropylene |
-
1983
- 1983-12-13 JP JP58233504A patent/JPS60125628A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60125628A (en) | 1985-07-04 |
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