JPS6024946A - Polypropylene multilayer transparent vessel - Google Patents
Polypropylene multilayer transparent vesselInfo
- Publication number
- JPS6024946A JPS6024946A JP58133181A JP13318183A JPS6024946A JP S6024946 A JPS6024946 A JP S6024946A JP 58133181 A JP58133181 A JP 58133181A JP 13318183 A JP13318183 A JP 13318183A JP S6024946 A JPS6024946 A JP S6024946A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- transparency
- multilayer transparent
- outer layers
- 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.)
- Pending
Links
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はプロー成形法などを用いて成ルさｉする多層の
ポリス０ロビレンの透明容器に１尚１−るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a transparent container made of multi-layered polyethylene, which is formed using a blow molding method or the like.
、ｌ？ ＩＪプロピレン樹脂は、成形性の俊才したａ月
り樹脂で１．Ｉ？ポリチレンや塩化ビニール樹脂と」（
に、ブロー成形分野で良く使用されている。４寄に月？
１ノエチレンに比べて透明であり、また塩化ビニール（
Ｉｖ（脂に比べて面１熱性にも優れていることカニ々Ｔ
ま才１加熱殺菌を必要とする医薬、食品容器や、力ＩＪ
ＨｂブＬ填を行う食品容器に、耐衝撃性に優れたエチレ
ンーグロピレンランダム共■合体が主として使用されて
いる。, l? IJ propylene resin is a highly moldable resin with 1. I? Polyethylene and vinyl chloride resin (
It is often used in the blow molding field. The moon on the 4th?
It is more transparent than 1-noethylene, and vinyl chloride (
Iv (crab T that has superior thermal properties compared to fat)
Medicines, food containers, and power IJs that require heat sterilization
Ethylene-glopyrene random co-combination, which has excellent impact resistance, is mainly used for food containers filled with Hb.
しかしながら、ポリプロピレン樹脂の透明性は、塩化ビ
ニール樹脂に比べて悪く、その用途に関して大きな制約
となっている。However, the transparency of polypropylene resin is poorer than that of vinyl chloride resin, which poses a major restriction on its use.
本発明の目的は１．ｊｅ ＩＪプロピレン（ＩＩｌｌ脂
の加工性、物性等を損うことなく上記欠点を排除し１、
透明性に優れたポリプロピレンの多層中空容器を提供す
ることにある。The purpose of the present invention is 1. je IJ propylene (IIll fat without impairing its processability, physical properties, etc., eliminating the above drawbacks 1,
An object of the present invention is to provide a polypropylene multilayer hollow container with excellent transparency.
本発明者らは、ポリゾロピレン樹脂の透明性について、
種々の検討を重ねた結果、成形された中空成形品の表面
を処理することによって、透明七トが改善されることを
見出した。ｄ？ポリロげレン樹脂は本来透明性を有する
樹脂であり、これが中空成形品になると、透明性が劣る
こと゛ば、成形された中空成形品の表面肌が悪いだめ、
表面で乱反射を起し、それにより透明性が損われるもの
と考え、・・ その表面に比較的屈折率が近く、ハイ・
メルトフーロレートのポリプロピレンラングム共１１１
合体を施したところ、表面の透明性が、従来のものより
一段と良くなった。このようなことから、本発明者らは
、ポリプロピレン樹脂の加工性や物性などを損うことな
く、透明性にも優れたポリプロピレンの多層透明容器を
得たのである。Regarding the transparency of polyzolopyrene resin, the present inventors have
As a result of various studies, it was discovered that transparency could be improved by treating the surface of the hollow molded product. d? Polylogelene resin is originally a transparent resin, and when it is made into a hollow molded product, if the transparency is poor, it is because the surface texture of the hollow molded product is poor.
We thought that diffuse reflection would occur on the surface, thereby impairing transparency.
Melt fluorate polypropylene laminate 111
When combined, the surface transparency was much better than that of the conventional one. For these reasons, the present inventors have obtained a polypropylene multilayer transparent container that has excellent transparency without impairing the processability or physical properties of the polypropylene resin.
本発明の上記多層透明容器は、それぞれの層がエチレン
濃度２重量％以上のエチレン−プロピレンランダム共重
合体の多層中空容器であって、内外層の少なくとも１つ
の層は溶融指数が３〜６０ｙ／１０ ｍｉｎであり、か
つ他の少くとも１つの層は浴１ｚ１；指数が２．５ ｆ
／ＩＱ ｍ１ｎ以下であることを特徴とするものである
。The multi-layer transparent container of the present invention is a multi-layer hollow container in which each layer is made of an ethylene-propylene random copolymer with an ethylene concentration of 2% by weight or more, and at least one of the inner and outer layers has a melting index of 3 to 60 Y/L. 10 min and at least one other layer is bath 1z1; index is 2.5 f
/IQ m1n or less.
本発明の各層におけるエチレン−プロピレンランダム共
重合体はエチレン濃度２重量％以上であり、２重）１重
％未満ではヘーズが大きくなり透明性が劣る。The ethylene-propylene random copolymer in each layer of the present invention has an ethylene concentration of 2% by weight or more, and if it is less than 1% by weight, haze increases and transparency deteriorates.
また内外層の少なくとも一つの層は溶融指数が３〜６０
ｆ ／ｌＱｍｉｎであり、３ ｆ／１０ｍ１ｎ未満で
はへ一ズが大きくなり透明性が劣り、６０ Ｓ’ ／Ｉ
Ｑ ｍｉｎを越えるとブロー成形の際に流れムラが発生
して容器外観が不良となる。このいわばハイフラーの該
共重合体の層を内外層の少なくとも１つの層に配するこ
とにより透明性に優れた多層容器が得られることを見出
したのである。At least one of the inner and outer layers has a melting index of 3 to 60.
f/lQmin, and if it is less than 3 f/10m1n, the hezzle will be large and the transparency will be poor, and 60 S'/I
If Qmin is exceeded, uneven flow will occur during blow molding, resulting in poor container appearance. It has been discovered that a multilayer container with excellent transparency can be obtained by disposing a layer of this so-called Hyfuller copolymer in at least one of the inner and outer layers.
一方他の少なくとも一つの層はｄ融指数が２．５ｆ／Ｉ
Ｑ ｍｉｎ以下であり、２．５９７１０ｍ１ｎを越える
とブロー成形の際にドローダウンが大きく偏肉をもたら
す。このいわばローフローの該共市合疹の層により、多
層ノ４リソンのドローダウンを防止し、耐衝撃性も保持
されるが、溶融指数は０．１ ｆ／ｌＱｍｉｎ以上が好
ましく、帆１ｆ／ｌＱｍｉｎ未満では押出様のモーター
負荷が大きくなり、成形サイクルも長くなる。On the other hand, at least one other layer has a d melting index of 2.5f/I.
Q min or less, and if it exceeds 2.59710 m1n, drawdown will be large during blow molding, resulting in uneven thickness. This so-called low-flow layer prevents drawdown of the multi-layered material and maintains impact resistance, but the melting index is preferably 0.1 f/lQmin or more, and the sail 1f/lQmin If it is less than that, the extrusion-like motor load becomes large and the molding cycle becomes long.
上記のようにして得られた多層の琺明谷器は、従来のも
のに比べてきわめて透明性１ｔＣ曖りている。The multi-layered porcelain porcelain obtained as described above has extremely poor transparency compared to conventional ware.
これは表面肌が改善されて乱反射示著しく減少した結果
であり、容器全体として透明性を発現したものと考えら
れる。This is because the surface texture was improved and the diffused reflection was significantly reduced, and it is thought that the container as a whole became transparent.
以下に本発明の実施例と比較例とを−挙げてその効果を
示す。Examples and comparative examples of the present invention will be listed below to illustrate their effects.
なお、各列の物性ｉ１＋１１定は下記条件で行った。The physical properties i1+11 of each column were determined under the following conditions.
１）、メルトフローレート（表中ＭＦＲと略す）； ｙ
／ｌ（Ｊｍｉｎ Ｊ工Ｅｔ ６７６０２）、ヘイズ（
表中全ヘイズ、内部ヘイズ）；係 ＪＩＳ ６７１４
但し、内部ヘイズは試料両面に流動パラフィンを塗布し
て測定した。1), melt flow rate (abbreviated as MFR in the table); y
/l (Jmin J Engineering Et 67602), Hayes (
(Total haze, internal haze in the table); JIS 6714 However, internal haze was measured by applying liquid paraffin to both surfaces of the sample.
：す、エチレン濃度（表中ａｗと１１１６ず） ： ｊ
ｊｉ量係実施例及び比較例について、
第１表に示す各種樹脂を、中間層、内外層の原料樹脂と
して、中間層用としては、５０φ押出機、内外層として
は２６φ押出機を用い、１８φの共押出多層グイから２
１０〜２３０００の溶融・ソリソンを押出成形し、プロ
ーアップ比３〜５、金型温度１０〜３゜０Ｃの条件下で
、中間層０．７％厚みの多層透明容器を成形し、物性を
測定した。: Su, ethylene concentration (aw and 1116 in the table) : j
Regarding the Examples and Comparative Examples, various resins shown in Table 1 were used as raw material resins for the intermediate layer, inner and outer layers, and a 50φ extruder was used for the intermediate layer, and a 26φ extruder was used for the inner and outer layers. 2 from coextruded multilayer Gui
A multilayer transparent container with an intermediate layer thickness of 0.7% was formed by extrusion molding a 10 to 23,000 molten Solison under conditions of a pull-up ratio of 3 to 5 and a mold temperature of 10 to 3°C, and the physical properties were measured. did.
物性の測定結果を表に示すが、実施例の各列から明らか
なように、本発明の多層透明容器は、３層（実施例１〜
７）、２層（実施例８〜１０ ）ともにヘイズ２０％以
下の優れた透明性を発現した。The measurement results of physical properties are shown in the table, and as is clear from each column of Examples, the multilayer transparent container of the present invention has three layers (Examples 1 to 3).
7) and the two layers (Examples 8 to 10) both exhibited excellent transparency with a haze of 20% or less.
一方、比１咬例１のように浴−１指数の低い＋ａＪ脂単
層ではヘイズが大きく、比較例２のように内外層の樹脂
の溶融指数が高すぎると、流れむらが発生してヘイズが
大きくなる。On the other hand, a single layer of +aJ resin with a low bath-1 index, as in Ratio 1 Bite Example 1, has a large haze, and if the melting index of the resin in the inner and outer layers is too high as in Comparative Example 2, uneven flow occurs and haze occurs. becomes larger.
また比較例３のように、３層の内外層ともに溶融指数が
低いとヘイズが大きくなり、比較例４のように２層であ
っても内外層ともに溶融指数が低いとやはりヘイズが大
きくなり、比較例辱のように内外層のエチレン濃度が低
くてもヘイズが大きくなる。Also, as in Comparative Example 3, if both the inner and outer layers of the three layers have a low melting index, the haze will increase, and even if there are two layers, as in Comparative Example 4, if both the inner and outer layers have a low melting index, the haze will increase. As shown in the comparative example, haze increases even if the ethylene concentration in the inner and outer layers is low.
Claims (1)
エチレン−プロピレンランタ゛ム共重合体の多Ｊ脅中空
容器であって、内外層の少なくとも１つの１−は溶融指
数が３〜６０ｆ／ＪＯｍｉｎであり、力１つイ屯の少く
とも１つの層は溶融指族が２’ ｇ／１０ ｍｉｎ以下
であるポリス０ロピレン多層透明容器。Each layer is a multilayer hollow container made of an ethylene-propylene lanthanum copolymer having an ethylene concentration of 2:ilj@1 or more, and at least one of the inner and outer layers has a melting index of 3 to 60 f/JOmin, A polyethylene multilayer transparent container in which at least one layer has a melting index of 2' g/10 min or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58133181A JPS6024946A (en) | 1983-07-21 | 1983-07-21 | Polypropylene multilayer transparent vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58133181A JPS6024946A (en) | 1983-07-21 | 1983-07-21 | Polypropylene multilayer transparent vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6024946A true JPS6024946A (en) | 1985-02-07 |
Family
ID=15098573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58133181A Pending JPS6024946A (en) | 1983-07-21 | 1983-07-21 | Polypropylene multilayer transparent vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6024946A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6040053A (en) * | 1983-08-12 | 1985-03-02 | 昭和電工株式会社 | Medical container |
| JPS61202842A (en) * | 1985-03-05 | 1986-09-08 | 昭和電工株式会社 | Plastic vessel |
| JPS63248634A (en) * | 1987-03-30 | 1988-10-14 | キヨ−ラク株式会社 | Plastic vessel for fluid supplementation |
| JPS63281945A (en) * | 1987-05-06 | 1988-11-18 | Mitsubishi Petrochem Co Ltd | Infusion bottle |
| JPH02215529A (en) * | 1989-02-17 | 1990-08-28 | Toyo Seikan Kaisha Ltd | Multi-layer plastic vessel superior in surface gloss property |
| WO2000030850A1 (en) * | 1998-11-23 | 2000-06-02 | Fresenius Kabi Ab | Improvements related to medical containers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52114682A (en) * | 1976-03-24 | 1977-09-26 | Mitsubishi Petrochem Co Ltd | Manufacture of polypropylene laminates |
-
1983
- 1983-07-21 JP JP58133181A patent/JPS6024946A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52114682A (en) * | 1976-03-24 | 1977-09-26 | Mitsubishi Petrochem Co Ltd | Manufacture of polypropylene laminates |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6040053A (en) * | 1983-08-12 | 1985-03-02 | 昭和電工株式会社 | Medical container |
| JPS61202842A (en) * | 1985-03-05 | 1986-09-08 | 昭和電工株式会社 | Plastic vessel |
| JPH0527544B2 (en) * | 1985-03-05 | 1993-04-21 | Showa Denko Kk | |
| JPS63248634A (en) * | 1987-03-30 | 1988-10-14 | キヨ−ラク株式会社 | Plastic vessel for fluid supplementation |
| JPS63281945A (en) * | 1987-05-06 | 1988-11-18 | Mitsubishi Petrochem Co Ltd | Infusion bottle |
| JPH02215529A (en) * | 1989-02-17 | 1990-08-28 | Toyo Seikan Kaisha Ltd | Multi-layer plastic vessel superior in surface gloss property |
| WO2000030850A1 (en) * | 1998-11-23 | 2000-06-02 | Fresenius Kabi Ab | Improvements related to medical containers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0051480B1 (en) | Laminate films for heat-shrink packaging foodstuffs | |
| EP0032027B1 (en) | Heat-shrinkable laminate film and process for producing the same | |
| JP3342127B2 (en) | Moisture barrier film | |
| WO1995006556A1 (en) | Biaxially-oriented polypropylene film with improved gas barrier | |
| JPS623949A (en) | Oxygen barrier oriented film | |
| JPH021014B2 (en) | ||
| CN109049918B (en) | Antifogging toughening antibacterial cast polypropylene food packaging film and preparation method thereof | |
| JPS6054832A (en) | Co-extrusion of thermoplastic fluoropolymer and thermoplastic polymer | |
| EP0345031B1 (en) | Laminated film | |
| JPS6024946A (en) | Polypropylene multilayer transparent vessel | |
| EP0346944B1 (en) | Polymeric composition of matter, oriented polymeric films and shrink bags made therefrom | |
| JPS5847412B2 (en) | Translucent biaxially stretched laminated film | |
| TW524745B (en) | Opaque film with a core layer of metallocene-catalyzed polypropylene | |
| JPH05508814A (en) | Barrier film of coextruded oriented polyvinylidene chloride copolymer and method for producing the same | |
| JP3199160B2 (en) | Linear low-density polyethylene composite film | |
| JP3239247B2 (en) | Ethylene-based heat-shrinkable film with small amount of eluted material by n-hexane extraction | |
| EP0758949B1 (en) | Biaxially-oriented polypropylene films | |
| JPH08277335A (en) | Linear low-density polyethylene film | |
| JPS581525A (en) | Preparation of heat sealable film with roughened surface | |
| JPH1086299A (en) | Matte polypropylene biaxially stretched composited film | |
| JPH0538793A (en) | Polypropylene-resin laminate film for thermoforming | |
| JPH0339242Y2 (en) | ||
| JPS5811148A (en) | Polyethylene terephthalate composite oriented film and its manufacture | |
| JPS6241110B2 (en) | ||
| JPS6366666B2 (en) |