JP3244135B2 - Squeezed tubular cylindrical container - Google Patents
Squeezed tubular cylindrical containerInfo
- Publication number
- JP3244135B2 JP3244135B2 JP28790692A JP28790692A JP3244135B2 JP 3244135 B2 JP3244135 B2 JP 3244135B2 JP 28790692 A JP28790692 A JP 28790692A JP 28790692 A JP28790692 A JP 28790692A JP 3244135 B2 JP3244135 B2 JP 3244135B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical container
- tubular cylindrical
- ethylene
- squeezed
- density
- 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
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- Compositions Of Macromolecular Compounds (AREA)
- Tubes (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Description
【０００１】
[0001]
【産業上の利用分野】
本発明は、絞り出しチューブ状円
筒容器に関するものであって、より詳しくは、ポリエチ
レンと、エチレンα−オレフィンコポリマーの混合物か
ら成形されたチューブ状円筒容器を電子線の照射によっ
て架橋することによって得られる、絞り出し容器として
適した柔軟性を有し、１２１℃で３０分程度の高温殺菌
処理が可能な耐熱性を備えた絞り出しチューブ状円筒容
器に関する。[Industrial applications]
The present invention relates to a squeezed tubular cylindrical container, and more particularly to a polyethylene.
A mixture of ethylene and ethylene α-olefin copolymer
The tube-shaped cylindrical container molded from
As a squeezed container obtained by cross-linking
The present invention relates to a squeezed tubular cylindrical container having suitable flexibility and heat resistance capable of high-temperature sterilization at 121 ° C. for about 30 minutes.
【０００２】[0002]
【従来の技術】包装容器にかかる素材の改質がすすむな
かで、レトルト容器のように高温で比較的長時間の殺菌
処理に耐え得る特性が求められる容器が数多く提案され
ている。これらの中で、通常は耐熱性の高いポリプロピ
レンや高密度ポリエチレンなどの熱可塑性樹脂単体、ま
たはエチレン−酢酸ビニル共重合体ケン化物、あるいは
ナイロンなどからなる酸素バリアー性層を中間層とし、
この両側にポリプロピレンや高密度ポリエチレンなどの
オレフィン樹脂層を積層したものが使用されている。し
かしながら、これらのチューブ状円筒容器は弾性率が高
く、柔軟性を必要とする絞り出しチューブ状円筒容器と
しては必ずしも適切な素材とは言いがたいものである
し、また、低密度ポリエチレンは柔軟性が優れているも
のの、収縮率が大きく、高温殺菌処理に付した場合に
は、収縮してしまうという欠点があり、レトルト殺菌用
途の絞り出しチューブ状円筒容器の素材としては適して
いない。2. Description of the Related Art As materials for packaging containers are being modified, many containers, such as retort containers, which are required to have properties that can withstand a relatively long time sterilization treatment at a high temperature have been proposed. Among these, usually a thermoplastic resin alone such as high heat-resistant polypropylene or high-density polyethylene, or a saponified ethylene-vinyl acetate copolymer, or an oxygen barrier layer made of nylon or the like as an intermediate layer,
What laminated | stacked the olefin resin layers, such as a polypropylene and a high density polyethylene, on both sides is used. However, these tubular cylindrical containers have a high modulus of elasticity and are not necessarily suitable materials for squeezed tubular cylindrical containers that require flexibility, and low-density polyethylene has low flexibility. Although it is excellent, it has a large shrinkage and has a drawback of shrinking when subjected to high-temperature sterilization, and is not suitable as a material for a squeezed tubular cylindrical container for retort sterilization.
【０００３】[0003]
【発明が解決しようとする課題】高温殺菌処理可能な絞
り出しチューブ状円筒容器は、前述したように、耐熱性
の高いポリプロピレンや高密度ポリエチレンなどの熱可
塑性樹脂単体、またはエチレン−酢酸ビニル共重合体ケ
ン化物、あるいはナイロンなどからなる酸素バリアー性
層を中間層とし、この両側にポリプロピレンや高密度ポ
リエチレンなどのオレフィン樹脂層を積層したものが使
用されているが、これらのチューブ状円筒容器は弾性率
が高く、柔軟性を必要とするチューブ状円筒容器として
は不満足なものである。As described above, a squeezed tubular cylindrical container which can be subjected to a high-temperature sterilization treatment is made of a thermoplastic resin such as polypropylene or high-density polyethylene having a high heat resistance, or an ethylene-vinyl acetate copolymer. An oxygen barrier layer made of saponified material or nylon is used as an intermediate layer, and an olefin resin layer such as polypropylene or high-density polyethylene is laminated on both sides of the intermediate layer. However, it is unsatisfactory as a tubular cylindrical container requiring flexibility.
【０００４】[0004]
【発明の目的】そこで本発明の目的は、高温殺菌処理を
しても熱による収縮率が少なく、かつ柔軟性に優れてい
る架橋ポリエチレン製絞り出しチューブ状円筒容器を提
供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a cross-linked polyethylene squeezed tubular container which has a low degree of shrinkage due to heat and has excellent flexibility even when subjected to high-temperature sterilization.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記目的を達
成するために提案されたもので、絞り出しチューブ状円
筒容器の素材として、ポリエチレンと、エチレン−α−
オレフィン共重合体からなるポリマー組成物を使用し、
これを電子線による照射処理をすることを特徴とするも
のである。すなわち、本発明によれば、密度が０．９０
０ないし０．９７５ｇ／ｃｍ 3 のポリエチレンおよびエ
チレン−α−オレフィン共重合体の混合物からなる耐熱
性絞り出しチューブ状円筒容器に、電子線を照射するこ
とを特徴とする高温殺菌可能な絞り出しチューブ状円筒
容器が提供される。DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object, and polyethylene and ethylene-α- are used as materials for a squeezed tubular cylindrical container.
Using a polymer composition comprising an olefin copolymer ,
This is characterized by performing an irradiation process with an electron beam. That is, according to the present invention, the density is 0.90
A high-temperature sterilizable squeezed tubular cylinder characterized by irradiating an electron beam to a heat-resistant squeezed tubular cylinder made of a mixture of polyethylene and an ethylene-α-olefin copolymer of 0 to 0.975 g / cm 3. A container is provided.
【０００６】
上記エチレン−α−オレフィン共重
合体のポリエチレンに対する混合割合は、５ないし５０
重量％の範囲であり、さらに、電子線の吸収線量は、５
０ないし５００ｋＧｙであることが、本発明の目的であ
る、高温殺菌処理をしても熱による収縮率が少なく、柔
軟性に優れている絞り出しチューブ状円筒容器を得る上
で好ましい。[0006]
The mixing ratio of the ethylene-α-olefin copolymer to polyethylene is 5 to 50.
Weight percent , and the absorbed dose of the electron beam is 5 %.
It is preferably from 0 to 500 kGy in order to obtain a squeezed tubular cylindrical container which is an object of the present invention and has a small shrinkage ratio due to heat even when subjected to high-temperature sterilization treatment and is excellent in flexibility.
【０００７】[0007]
【発明の具体的説明】本発明における最大の技術的特徴
は、ポリエチレンとエチレン−α−オレフィン共重合体
との組成物から成形された絞り出しチューブ状円筒容器
を電子線照射することにある。ポリエチレン単独から得
られた絞り出しチューブ状円筒容器を電子線照射して
も、後述する比較例２から明らかなように、本願発明の
目的は達成できない。ポリエチレン／エチレン−α−オ
レフィン共重合体の配合割合は、５０ないし９５重量％
／５ないし５０重量％、とくに、６０ないし９０重量％
／１０ないし４０重量％であることが好ましい。DETAILED DESCRIPTION OF THE INVENTION The greatest technical feature of the present invention is that a squeezed tubular cylindrical container formed from a composition of polyethylene and an ethylene-α-olefin copolymer is irradiated with an electron beam. Obtained from polyethylene alone
Irradiating the squeezed tubular cylindrical container with electron beam
As is apparent from Comparative Example 2 described later,
The goal cannot be achieved . The mixing ratio of the polyethylene / ethylene-α-olefin copolymer is 50 to 95% by weight.
/ 5 to 50% by weight, especially 60 to 90% by weight
/ 10 to 40% by weight.
【０００８】
上記ポリエチレン組成物をスクリュ
ー押出機などを用いた自体公知の成形方法により、チュ
ーブ状円筒容器に成形し、次いで、これに電子線を照射
するものである。電子線の照射は、自体公知の電子線の
照射装置を用いて、５０ないし５００ｋＧｙ、好ましく
は１００ないし３００ｋＧｙの電子線を照射するもので
あり、これによって、上記組成物を構成する成分である
ポリエチレンおよびエチレン−α−オレフィン共重合体
が架橋し、ゲル分率が４０％以上になり、その結果、熱
水自由収縮率（試料をオートクレーブに入れ、１２１
℃、３０分熱処理した時の収縮率）を３％以下にすると
共に、該組成物が本来有している柔軟性を損なうことな
く、高温殺菌処理が可能な絞り出しチューブ状円筒容器
が提供されることになる。しかしながら、電子線の照射
量によっては、上記組成物を構成する成分であるポリエ
チレンおよびエチレン−α−オレフィン共重合体が架橋
し、該組成物中の分子は三次元網状構造をとって、いわ
ゆるゲル化状態に至り、融点以上の温度で溶融しづらく
なる。このため該組成物のシール性が損なわれることが
ある。その場合には、シール部位のみを遮蔽して照射を
行うことにより、シール性が損なわれることなく、該組
成物が本来有している柔軟性を兼ね備えた、高温殺菌処
理が可能な絞り出しチューブ状円筒容器が提供されるこ
とになる。[0008]
The polyethylene composition is molded into a tubular cylindrical container by a molding method known per se using a screw extruder or the like, and then irradiated with an electron beam. The electron beam is irradiated by using an electron beam irradiation device known per se to irradiate an electron beam of 50 to 500 kGy, preferably 100 to 300 kGy. And the ethylene-α-olefin copolymer is cross-linked, and the gel fraction becomes 40% or more. As a result, the hot water free shrinkage rate
(Shrinkage ratio when heat-treated at 30 ° C. for 30 minutes) is set to 3% or less, and a squeezed tubular cylindrical container which can be subjected to high-temperature sterilization treatment without impairing the inherent flexibility of the composition is provided. Will be. However, depending on the irradiation amount of the electron beam, polyethylene and the ethylene-α-olefin copolymer, which are components of the composition, crosslink, and the molecules in the composition take a three-dimensional network structure, so-called gel. And it becomes difficult to melt at a temperature higher than the melting point. For this reason, the sealing property of the composition may be impaired. In such a case, by irradiating only the sealing portion and irradiating, without deteriorating the sealing properties, the composition has the flexibility inherent in the composition and has a squeezable tube shape capable of high-temperature sterilization treatment. A cylindrical container will be provided.
【０００９】ポリエチレンの密度は、０．９００ｇ／ｃ
ｍ3 ないし０．９７５ｇ／ｃｍ3 、とくに０．９３０な
いし０．９４０ｇ／ｃｍ3 が好ましく、メルトフローレ
イト（ＭＦＲ）は、０．０１ないし１０ｇ／１０ｍｉ
ｎ、とくに、０．１ないし５ｇ／１０ｍｉｎのものが好
ましく使用される。The density of polyethylene is 0.900 g / c
m 3 to 0.975 g / cm 3 , particularly preferably 0.930 to 0.940 g / cm 3 , and the melt flow rate (MFR) is 0.01 to 10 g / 10 mi.
n, especially those having a concentration of 0.1 to 5 g / 10 min are preferably used.
【００１０】エチレン−α−オレフィン共重合体として
は、低結晶性のエチレン−α−オレフィン共重合体が好
ましく使用され、その密度は、０．８６０ｇ／ｃｍ 3 な
いし０．８９５ｇ／ｃｍ 3 であり、ＭＦＲは、０．１な
いし１０ｇ／１０ｍｉｎ、とくに０．２ないし５ｇ／１
０ｍｉｎのものが好ましく使用される。エチレンと共重
合されるα−オレフィンとしては、プロピレン、ブテン
−１、ペンテン−１、４−メチルペンテン−１などを例
示することができるが、なかんずく、プロピレン、およ
びブテン−１がコモノマー成分として好ましく使用され
る。[0010] As the ethylene-α-olefin copolymer, a low-crystallinity ethylene-α-olefin copolymer is preferably used, and its density is 0.860 g / cm 3 .
The mass is 0.895 g / cm 3 and the MFR is 0.1 to 10 g / 10 min, especially 0.2 to 5 g / 1.
0 min is preferably used. As the α-olefin to be copolymerized with ethylene, propylene, butene-1, pentene-1, 4-methylpentene-1 and the like can be exemplified. Among them, propylene and butene-1 are preferred as the comonomer component. used.
【００１１】エチレン−α−オレフィン共重合体におけ
るエチレンとα−オレフィンの構成比は、モル比で、エ
チレン／α−オレフィン＝９５／５ないし７０／３０、
好ましくは９０／１０ないし７５／２５であることが望
ましい。本発明の絞り出しチューブ状円筒容器を構成す
るポリマー組成物には、本発明の目的を損なわない範囲
で、充填剤、安定剤、滑剤、帯電防止剤、難燃剤、発泡
剤などの自体公知の添加剤を配合することができる。The constituent ratio of ethylene and α-olefin in the ethylene-α-olefin copolymer is ethylene / α-olefin = 95/5 to 70/30 in molar ratio,
Preferably it is 90/10 to 75/25. Known additions of fillers, stabilizers, lubricants, antistatic agents, flame retardants, foaming agents, etc., to the polymer composition constituting the squeezed tubular cylindrical container of the present invention, as long as the object of the present invention is not impaired. An agent can be compounded.
【００１２】[0012]
【実施例】以下、実施例によって本発明を説明する。な
お、実施例によって得られた絞り出しチューブ状円筒容
器の物性のうち、抗力とは、容器の柔軟性を評価するた
めの指標であり、チューブ状円筒容器の筒部上方より筒
部表面に荷重（圧縮速度１００ｍｍ／ｍｉｎ）をかけ
て、同チューブ状円筒容器を短径１０ｍｍの楕円筒状態
まで圧縮した際の応力をいうものであり、この抗力が
１．５ｋｇｆ以下であることが好ましい柔軟性を有する
ものとして評価される。The present invention will be described below by way of examples. In the physical properties of the squeezed tubular container obtained in the examples, the drag is an index for evaluating the flexibility of the container, and a load is applied to the surface of the tubular portion from above the tubular portion of the tubular cylindrical container ( This refers to the stress when the tubular cylindrical container is compressed to an elliptical cylindrical state with a short diameter of 10 mm by applying a compression speed of 100 mm / min. The flexibility is preferably such that the drag is 1.5 kgf or less. It is evaluated as having.
【００１３】＜実施例１＞密度０．９３８ｇ／ｃｍ3 、
融点１２５℃の中密度ポリエチレンと、エチレン−プロ
ピレン共重合体（エチレン含量８０モル％）を７０：３
０（重量比）の割合で混合した組成物（このポリマー組
成物の密度は０．９１６ｇ／ｃｍ3 ）を、直径４０ｍ
ｍ、有効長さ１０００ｍｍのスクリューを用い、ダイス
温度１９０℃でダイスより押し出し、肉厚０．４５ｍ
ｍ、内径４０ｍｍ、長さ１５０ｍｍのチューブ状円筒容
器を得た。このチューブ状円筒容器に電子線を１００ｋ
Ｇｙ照射した試料のゲル分率、熱水自由収縮率、および
抗力を表１に示した。<Example 1> A density of 0.938 g / cm 3 ,
A medium-density polyethylene having a melting point of 125 ° C. and an ethylene-propylene copolymer (ethylene content: 80 mol%) were mixed in a ratio of 70: 3.
0 (weight ratio) (a polymer composition having a density of 0.916 g / cm 3 ) was mixed with a mixture having a diameter of 40 m.
m, using a screw with an effective length of 1000 mm, extruded from a die at a die temperature of 190 ° C, and a wall thickness of 0.45 m
m, an inner diameter of 40 mm and a length of 150 mm were obtained as a tubular cylindrical container. Electron beam is applied to this tubular cylindrical container by 100k
Table 1 shows the gel fraction, hot water free shrinkage, and drag of the sample irradiated with Gy.
【００１４】＜実施例２＞密度０．９５３ｇ／ｃｍ3 、
融点１３０℃の高密度ポリエチレンとエチレン−プロピ
レン共重合体を７０：３０（重量比）の割合で混和した
組成物（このポリマーの密度は、０．９２５ｇ／ｃｍ
3 ）を、直径４０ｍｍ、有効長さ１０００ｍｍのスクリ
ューを用い、ダイス温度１９０℃でダイスより押出し、
肉厚０．４５ｍｍ、内径４０ｍｍ、長さ１５０ｍｍのチ
ューブ状円筒容器を得た。このチューブ状円筒容器に電
子線を１００ＫＧｙ照射した試料のゲル分率、熱水自由
収縮率、および抗力を表１に示した。Example 2 Density 0.953 g / cm 3 ,
A composition in which high-density polyethylene having a melting point of 130 ° C. and an ethylene-propylene copolymer are mixed at a ratio of 70:30 (weight ratio) (the density of this polymer is 0.925 g / cm
3 ) using a screw having a diameter of 40 mm and an effective length of 1000 mm, extruding from a die at a die temperature of 190 ° C.
A tubular cylindrical container having a wall thickness of 0.45 mm, an inner diameter of 40 mm, and a length of 150 mm was obtained. Table 1 shows the gel fraction, hot water free shrinkage, and drag of a sample obtained by irradiating this tubular cylindrical container with an electron beam at 100 KGy.
【００１５】＜実施例３＞密度０．９２１ｇ／ｃｍ3 、
融点１１７℃の直鎖状低密度ポリエチレンとエチレン−
プロピレン共重合体を９０：１０（重量比）の割合で混
和した組成物（このポリマーの密度は、０．９１６ｇ／
ｃｍ3 ）を、直径４０ｍｍ、有効長さ１０００ｍｍのス
クリューを用い、ダイス温度１９０℃でダイスより押出
し、肉厚０．４５ｍｍ、内径４０ｍｍ、長さ１５０ｍｍ
のチューブ状円筒容器を得た。このチューブ状円筒容器
に電子線を１５０ＫＧｙ照射した試料のゲル分率、熱水
自由収縮率、および抗力を表１に示した。Example 3 Density 0.921 g / cm 3 ,
Linear low-density polyethylene having a melting point of 117 ° C and ethylene-
A composition obtained by mixing a propylene copolymer at a ratio of 90:10 (weight ratio) (the density of this polymer is 0.916 g /
cm 3 ) was extruded from a die at a die temperature of 190 ° C. using a screw having a diameter of 40 mm and an effective length of 1000 mm, a wall thickness of 0.45 mm, an inner diameter of 40 mm, and a length of 150 mm.
Was obtained. Table 1 shows the gel fraction, hot water free shrinkage ratio, and drag of a sample obtained by irradiating the tubular cylindrical container with an electron beam at 150 KGy.
【００１６】＜実施例４＞密度０．９２４ｇ／ｃｍ3 、
融点１１９℃の直鎖状低密度ポリエチレンとエチレン−
プロピレン共重合体を９０：１０（重量比）の割合で混
和した組成物（このポリマーの密度は、０．９１７ｇ／
ｃｍ3 ）を、直径４０ｍｍ、有効長さ１０００ｍｍのス
クリューを用い、ダイス温度１９０℃でダイスより押出
し、肉厚０．４５ｍｍ、内径４０ｍｍ、長さ１５０ｍｍ
のチューブ状円筒容器を得た。このチューブ状円筒容器
に電子線を２００ＫＧｙ照射した試料のゲル分率、熱水
自由収縮率、および抗力を表１に示した。Example 4 Density 0.924 g / cm 3 ,
Linear low-density polyethylene having a melting point of 119 ° C and ethylene-
A composition obtained by mixing a propylene copolymer at a ratio of 90:10 (weight ratio) (the density of this polymer is 0.917 g /
cm 3 ) was extruded from a die at a die temperature of 190 ° C. using a screw having a diameter of 40 mm and an effective length of 1000 mm, a wall thickness of 0.45 mm, an inner diameter of 40 mm, and a length of 150 mm.
Was obtained. Table 1 shows the gel fraction, hot water free shrinkage, and drag of a sample obtained by irradiating this tubular cylindrical container with an electron beam at 200 KGy.
【００１７】＜比較例１＞密度０．９３５ｇ／ｃｍ3 、
融点１２５℃の中密度ポリエチレンと、エチレン−プロ
ピレン共重合体（エチレン含量８０モル％）を７０：３
０（重量比）の割合で混合した組成物（このポリマー組
成物の密度は０．９１６ｇ／ｃｍ3 ）を、直径４０ｍ
ｍ、有効長さ１０００ｍｍのスクリューを用い、ダイス
温度１９０℃でダイスより押し出し、肉厚０．４５ｍ
ｍ、内径４０ｍｍ、長さ１５０ｍｍのチューブ状円筒容
器を得た。このチューブ状円筒容器のゲル分率、熱水自
由収縮率、および抗力を表１に示した。Comparative Example 1 A density of 0.935 g / cm 3 ,
A medium-density polyethylene having a melting point of 125 ° C. and an ethylene-propylene copolymer (ethylene content: 80 mol%) were mixed in a ratio of 70: 3.
0 (weight ratio) (a polymer composition having a density of 0.916 g / cm 3 ) was mixed with a mixture having a diameter of 40 m.
m, using a screw with an effective length of 1000 mm, extruded from a die at a die temperature of 190 ° C, and a wall thickness of 0.45 m
m, an inner diameter of 40 mm and a length of 150 mm were obtained as a tubular cylindrical container. Table 1 shows the gel fraction, hot water free shrinkage, and drag of this tubular cylindrical container.
【００１８】＜比較例２＞密度０．９３５ｇ／ｃｍ3 、
融点１２５℃の中密度ポリエチレンを、直径４０ｍｍ、
有効長さ１０００ｍｍのスクリューを用い、ダイス温度
１９０℃でダイスより押し出し、肉厚０．４５ｍｍ、内
径４０ｍｍ、長さ１５０ｍｍのチューブ状円筒容器を得
た。このチューブ状円筒容器に電子線を１００ｋＧｙ照
射した試料のゲル分率、熱水自由収縮率、および抗力を
表１に示した。Comparative Example 2 A density of 0.935 g / cm 3 ,
Medium-density polyethylene having a melting point of 125 ° C., a diameter of 40 mm,
Using a screw having an effective length of 1000 mm, the tube was extruded from the die at a die temperature of 190 ° C. to obtain a tubular cylindrical container having a thickness of 0.45 mm, an inner diameter of 40 mm, and a length of 150 mm. Table 1 shows the gel fraction, hot water free shrinkage, and drag of a sample obtained by irradiating this tubular cylindrical container with an electron beam at 100 kGy.
【００１９】 [0019]
【００２０】[0020]
【発明の効果】本発明によれば、特定のポリマー組成物
から成形されたチューブ状円筒容器を電子線照射するこ
とにより、高温でのレトルト殺菌に際しても収縮率が極
めて低く、かつ、内容物の押し出し特性に優れた絞り出
しチューブ状円筒容器が提供される。According to the present invention, by shrinking the retort at a high temperature, the shrinkage is extremely low by irradiating the cylindrical cylindrical container molded from the specific polymer composition with an electron beam, and the content of the content is reduced. A squeezed tubular cylindrical container having excellent extrusion properties is provided.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉井 文男 群馬県高崎市綿貫町1233番地 日本原子 力研究所高崎研究所内 (72)発明者 串田 秀男 東京都江東区大島３丁目２番６号 株式 会社吉野工業所内 (72)発明者 中島 静 東京都江東区大島３丁目２番６号 株式 会社吉野工業所内 (72)発明者 栗原 孝弘 群馬県藤岡市岡ノ郷字高木350番地 株 式会社吉野工業所 群馬工場内 (72)発明者 菅原 良二 千葉県松戸市稔台310番地 株式会社吉 野工業所 松戸工場内 (72)発明者 二見 靖男 千葉県市原市千種海岸３番地 三井石油 化学工業株式会社内 (72)発明者 石山 正信 千葉県市原市千種海岸３番地 三井石油 化学工業株式会社内 (72)発明者 宮本 元 千葉県市原市千種海岸３番地 三井石油 化学工業株式会社内 (56)参考文献 特開 平４−27534（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Fumio Yoshii Inventor 1233 Watanuki-cho, Takasaki City, Gunma Prefecture Inside the Japan Atomic Energy Research Institute Takasaki Research Institute (72) Inventor Hideo Kushida 3-2-6 Oshima, Koto-ku, Tokyo Stock Company Yoshino Kogyosho (72) Inventor Shizuka Nakajima 3-2-6 Oshima, Koto-ku, Tokyo Co., Ltd.Yoshino Kogyo Co., Ltd. (72) Inventor Takahiro Kurihara 350 Okanogo Takagi, Fujioka City, Gunma Prefecture Yoshino Kogyosho Gunma Co., Ltd. In-plant (72) Inventor Ryoji Sugawara 310 Minoridai, Matsudo, Chiba Prefecture Yoshino Industrial Co., Ltd.In Matsudo Plant (72) Inventor Yasuo Futami 3 Chigusa Kaigan, Ichihara-shi, Chiba Mitsui Oil Chemical Co., Ltd. (72) Inventor Masanobu Ishiyama 3 Chigusa Coast, Ichihara City, Chiba Prefecture Inside Mitsui Oil Chemical Industry Co., Ltd. (72) Inventor Gen Miyamoto Ichihara City, Chiba Prefecture Seed coast 3 address Mitsui Petrochemical Industry Co., Ltd. in the (56) Reference Patent flat 4-27534 (JP, A)
Claims (3)
ｃｍ3 のポリエチレン５０ないし９５重量％および密度
が０．８６０ないし０．８９５ｇ／ｃｍ3 のエチレン−
α−オレフィン共重合体５ないし５０重量％の混合物か
らなる耐熱性絞り出しチューブ状円筒容器に、電子線を
照射することを特徴とする高温殺菌可能な絞り出しチュ
ーブ状円筒容器。(1) a density of 0.900 to 0.975 g /
ethylene to polyethylene 50 to 95 wt% and a density of cm 3 no 0.860 0.895 g / cm 3 -
A high-temperature sterilizable squeezed tubular cylindrical container comprising irradiating an electron beam to a heat-resistant squeezed tubular cylindrical container comprising a mixture of 5 to 50% by weight of an α-olefin copolymer.
ＦＲ）が０．０１ないし１０ｇ／１０ｍｉｎであり、エ
チレン−α−オレフィン共重合体のメルトフローレイト
（ＭＦＲ）が０．１ないし１０ｇ／１０ｍｉｎである請
求項１記載の絞り出しチューブ状円筒容器。2. A polyethylene of melt Furore wells (M
FR) is to no 0.01 10 g / 10min, tubular cylindrical container squeezing of claim 1, wherein to melt Furore wells ethylene -α- olefin copolymer (MFR) is 0.1 is 10 g / 10 min .
ｋＧｙである請求項１または２記載の絞り出しチューブ
状円筒容器。3. The absorption dose of an electron beam is 50 to 500.
The squeezed tubular cylindrical container according to claim 1 or 2, which is kGy.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28790692A JP3244135B2 (en) | 1992-10-26 | 1992-10-26 | Squeezed tubular cylindrical container |
| DE69311497T DE69311497T2 (en) | 1992-10-26 | 1993-10-22 | Compressible tubular container and method for its manufacture |
| EP93117180A EP0595220B1 (en) | 1992-10-26 | 1993-10-22 | Squeezable tubular container and process for the production thereof |
| TW082108912A TW300190B (en) | 1992-10-26 | 1993-10-23 | |
| CA002109127A CA2109127A1 (en) | 1992-10-26 | 1993-10-25 | Squeezable tubular container and process for the production thereof |
| AU49197/93A AU664651B2 (en) | 1992-10-26 | 1993-10-25 | Squeezable tubular container and process for the production thereof |
| CN93120228A CN1065478C (en) | 1992-10-26 | 1993-10-26 | Squeezable tubular container and process for the production thereof |
| KR1019930022282A KR100216638B1 (en) | 1992-10-26 | 1993-10-26 | Squeezable tubular container and process for the production thereof |
| US08/453,673 US5565160A (en) | 1992-10-26 | 1995-05-30 | Squeezable tubular container and process for the production thereof |
| US08/674,406 US5725715A (en) | 1992-10-26 | 1996-07-02 | Squeezable tubular container and process for the production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28790692A JP3244135B2 (en) | 1992-10-26 | 1992-10-26 | Squeezed tubular cylindrical container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06135448A JPH06135448A (en) | 1994-05-17 |
| JP3244135B2 true JP3244135B2 (en) | 2002-01-07 |
Family
ID=17723258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28790692A Expired - Lifetime JP3244135B2 (en) | 1992-10-26 | 1992-10-26 | Squeezed tubular cylindrical container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3244135B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2806385B1 (en) * | 2000-03-17 | 2002-12-06 | Cep Ind | FLEXIBLE TUBE, RESISTANT TO CRACKING UNDER STRESS AND WATERPROOF |
-
1992
- 1992-10-26 JP JP28790692A patent/JP3244135B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06135448A (en) | 1994-05-17 |
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