JPH07124244A - Base material for medical vessel - Google Patents

Base material for medical vessel

Info

Publication number
JPH07124244A
JPH07124244A JP5279481A JP27948193A JPH07124244A JP H07124244 A JPH07124244 A JP H07124244A JP 5279481 A JP5279481 A JP 5279481A JP 27948193 A JP27948193 A JP 27948193A JP H07124244 A JPH07124244 A JP H07124244A
Authority
JP
Japan
Prior art keywords
layer
density polyethylene
low density
preparations
crystalline
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
Application number
JP5279481A
Other languages
Japanese (ja)
Inventor
Osami Shinonome
修身 東雲
Yasushi Nakamura
靖 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
Original Assignee
Terumo Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terumo Corp filed Critical Terumo Corp
Priority to JP5279481A priority Critical patent/JPH07124244A/en
Publication of JPH07124244A publication Critical patent/JPH07124244A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a base material for a medical vessel having high sealing quality by forming the material out of a multilayer body in which a low density polyethylene forms an innermost layer and a linear low density polyethylene forms an outermost layer, while an intermediate layer being formed out of the polymeric composition of a crystalline polypropylene and an amorphous polypropylene. CONSTITUTION:The base material for a medical vessel is constituted of a multilayer body in which a low density polyethylene forms an innermost layer and a linear low density polyethylene having density equal to or above 0.920g/cm<3> forms an outermost layer, while an intermediate layer being made of the polymeric composition of crystalline poluprophylene or crystalline copolymer mainly composed of the crystalline polypropylene and an amorphous polypropylene or a polybutene. The material so formed is useful as a blood component storage vessel and particularly useful for a vessel to contain a physilogical saline solution, an electrolytic solution, dextran preparations, mannitol preparations, scannharides preparations, amino acid preparations, oily emulsion preparations or the like. This material is excellent in transparency, flexibility, thermal resistance and bag-making quality. Also, the material ensures good moldability.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は血液、医薬液等医療分野
において扱われる液体を保存する容器、搬送するチュー
ブ(連結管)等に適した医療容器用基材に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base material for a medical container, which is suitable for a container for storing liquids such as blood and medical liquids used in the medical field, a tube for transporting (connecting pipe) and the like.

【0002】[0002]

【従来の技術】採血、輸血、輸液等の医療分野において
用いられる容器やチューブの材料には安全性・衛生性の
他種々の性能が要求され、なかでも柔軟性、透明性、耐
熱性及びこれらのバランスは重視される項目である。
2. Description of the Related Art Materials for containers and tubes used in the medical field such as blood sampling, blood transfusion, and liquid transfusion are required to have various performances in addition to safety and hygiene. Among them, flexibility, transparency, heat resistance and The balance of is an important item.

【0003】上記用途のポリマー素材としては従来から
軟質ポリ塩化ビニル及びエチレン−酢酸ビニルコポリマ
ー、低密度ポリエチレンの如きポリエチレンポリマーが
代表例であるが、軟質ポリ塩化ビニルでは可塑剤の溶
出、着色、廃棄処理などにおいて問題が生じることがあ
る。
As the polymer material for the above-mentioned applications, polyethylene polymers such as soft polyvinyl chloride, ethylene-vinyl acetate copolymer, and low density polyethylene have hitherto been representative examples. However, in soft polyvinyl chloride, elution, coloring and disposal of plasticizers are carried out. Problems may occur in processing.

【0004】ポリエチレン系の場合は柔軟性、透明性と
耐熱性とのバランスに欠け、低密度品は柔軟性、透明性
が比較的良いが、必然的に軟化点が低くなるので耐熱性
が低下し、通常100〜130℃で行われる高圧蒸気滅
菌に耐えられず、ブロッキング、失透(白化)、アバタ
状のムラの発生、変形などを生じやすい。耐熱性を上げ
る手段として化学架橋、放射線架橋等があるが、製造工
程の複雑化は免れ得ない。
In the case of a polyethylene type, the flexibility, transparency and heat resistance are not well balanced, and the low density product has relatively good flexibility and transparency, but the softening point is inevitably low and the heat resistance is lowered. However, it cannot withstand high-pressure steam sterilization usually performed at 100 to 130 ° C., and is likely to cause blocking, devitrification (whitening), avatar-like unevenness, deformation, and the like. Chemical crosslinking, radiation crosslinking and the like are available as means for increasing heat resistance, but the manufacturing process is inevitably complicated.

【0005】また、結晶性ポリプロピレンも医療用容器
に広く使われているポリマーであり、その良好な耐熱性
はポリエチレンに比してはるかに有利であるが、高剛性
であり(柔軟性に乏しい)、また融点が高いため熱シー
ルしにくく、製袋性に問題がある。結晶性ポリプロピレ
ンを柔軟化するにはスチレン系エラストマーやアモルフ
ァスポリプロピレン(アタクチックポリプロピレン)を
ブレンドするのが良いとされ、特にアモルファスポリプ
ロピレンと結晶性ポリプロピレンとのブレンド物からな
る層を結晶性ポリプロピレンの層で挟んだサンドウィッ
チ型構造の多層体(多層シート)は該ブレンド物の粘着
性(ブロッキング性)を抑えつつ柔軟なシートを得る手
段として有効である(例えば特開平5−77371号に
提案されている)。
Crystalline polypropylene is also a polymer that is widely used in medical containers, and although its good heat resistance is far more advantageous than polyethylene, it has high rigidity (poor flexibility). In addition, since the melting point is high, it is difficult to perform heat sealing, and there is a problem in bag making. It is said that blending styrene elastomer or amorphous polypropylene (atactic polypropylene) is a good way to soften crystalline polypropylene. The sandwiched sandwich type multilayer body (multilayer sheet) is effective as a means for obtaining a flexible sheet while suppressing the tackiness (blocking property) of the blend (proposed in, for example, JP-A-5-77371). .

【0006】しかしながら、このような構造ではやはり
結晶性ポリプロピレンがシール層を形成し、かつ、柔軟
で流動しやすいブレンド物を中間層に持つため熱シール
しにくい難点はさらに顕著である。
However, in such a structure, since the crystalline polypropylene still forms the sealing layer and the soft and easy-to-flow blend is contained in the intermediate layer, it is more difficult to heat seal.

【0007】[0007]

【発明が解決しようとする課題】本発明者らは従来技術
の持つ上述の如き諸問題が解決された医療容器用基材を
提供すべく、アモルファスポリオレフィン適用の多層体
におけるシール性改良に焦点を当てて検討した。
DISCLOSURE OF THE INVENTION In order to provide a substrate for medical containers in which the above-mentioned problems of the prior art are solved, the present inventors have focused on improving the sealing property in a multilayer body to which amorphous polyolefin is applied. I applied it and examined it.

【0008】[0008]

【課題を解決するための手段】本発明の要旨は、低密度
ポリエチレン(A)が最内層を、密度0.920g/c
3 以上の線状低密度ポリエチレン(B)が最外層を形
成し、結晶性ポリプロピレンもしくはこれを主成分とす
る結晶性コポリマー(C)とアモルファスポリプロピレ
ンもしくはポリブテン(D)との重合体組成物(E)が
中間層である多層体からなる医療容器用基材であり、こ
のような構成とすることによって、透明性、柔軟性及び
耐熱性が維持されつつシール性の優れた医療容器用基材
となる。
The gist of the present invention is that the low density polyethylene (A) constitutes the innermost layer and has a density of 0.920 g / c.
A polymer composition of crystalline polypropylene or a crystalline copolymer (C) containing the linear low-density polyethylene (B) of m 3 or more as an outermost layer and crystalline polypropylene (C) containing the polypropylene as a main component and amorphous polypropylene or polybutene (D) ( E) is a medical container substrate comprising a multi-layer body which is an intermediate layer, and by having such a constitution, the medical container substrate is excellent in sealing property while maintaining transparency, flexibility and heat resistance. Becomes

【0009】即ち、最内層(容器の内壁層)は高圧蒸気
滅菌時に直接蒸気に触れないので比較的耐熱性の低いポ
リエチレンであっても滅菌に耐えることができ、最外層
(容器の外壁層)の「比較的高密度の」線状低密度ポリ
エチレンの耐熱性、中間層のアモルファスポリオレフィ
ン含有層の透明性、柔軟性及び耐熱性のバランスに優
れ、しかも低密度ポリエチレンがシール層であるので良
好な加工性を持つ基材となるのである。
That is, since the innermost layer (inner wall layer of the container) does not come into direct contact with steam during high-pressure steam sterilization, even polyethylene having relatively low heat resistance can withstand sterilization, and the outermost layer (outer wall layer of the container). “Relatively high density” has excellent balance of heat resistance of linear low density polyethylene, transparency of intermediate polyolefin containing layer, flexibility and heat resistance, and low density polyethylene is a sealing layer, which is good. It becomes a workable base material.

【0010】本発明において最内層を形成する低密度ポ
リエチレン(以下LDPEと称す)としては高圧法LD
PEでもよいが、線状低密度ポリエチレン(以下LLD
PE)が好ましい。高圧法LDPEに比し、透明性、柔
軟性、耐熱性などのバランスにおいて優れるからであ
る。
In the present invention, the low density polyethylene (hereinafter referred to as LDPE) forming the innermost layer is a high pressure LD
PE may be used, but linear low-density polyethylene (hereinafter LLD
PE) is preferred. This is because it is excellent in balance of transparency, flexibility, heat resistance and the like as compared with the high pressure method LDPE.

【0011】LLDPEは周知の如く、エチレンに少量
の(好ましくは1〜10モル%、より好ましくは2〜8
モル%)プロピレン、ブテン−1、ペンテン−1、ヘキ
セン−1、ヘプテン−1、オクテン−1、デセン−1、
ドデセン−1、4−メチルペンテン−1などのα−オレ
フィン類を低圧法もしくは中圧法で共重合させて得られ
るが、透明性、柔軟性、耐熱性、成形性、力学的性質な
どを考慮すると密度が好ましくは0.905〜0.92
5g/cm3 、より好ましくは0.908〜0.920
g/cm3 であることがよく、温度190℃、荷重2,
160gにおけるメルトフローレイト(MFR)が好ま
しくは0.1〜10、より好ましくは0.5〜5.0で
あるのが適当である。
As is well known, LLDPE is a small amount (preferably 1 to 10 mol%, more preferably 2 to 8) of ethylene.
Mol%) propylene, butene-1, pentene-1, hexene-1, heptene-1, octene-1, decene-1,
It can be obtained by copolymerizing α-olefins such as dodecene-1 and 4-methylpentene-1 by a low pressure method or an intermediate pressure method. However, considering transparency, flexibility, heat resistance, moldability, mechanical properties, etc. The density is preferably 0.905 to 0.92
5 g / cm 3 , more preferably 0.908 to 0.920
g / cm 3 is preferable, temperature 190 ° C., load 2,
The melt flow rate (MFR) at 160 g is preferably 0.1 to 10, and more preferably 0.5 to 5.0.

【0012】次に、最外層を形成するLLDPE(B)
は(A)で述べたLLDPEのうち密度が0.920g
/cm3 以上であることを要件とする。密度が0.92
0g/cm3 より低いと高圧蒸気滅菌時に(蒸気に直接
触れるので)アバタ状のムラが発生し、高品価値を著し
く損なうからである。好ましい範囲は0.922〜0.
930g/cm3 であり、最内層を形成するLLDPE
(A)よりも高密度のものが選ばれる。なお、(A)と
(B)とが同一のLLDPEであり得ることはもちろん
である。
Next, LLDPE (B) which forms the outermost layer
Of the LLDPE mentioned in (A) has a density of 0.920 g
/ Cm 3 or more is required. Density is 0.92
If it is lower than 0 g / cm 3, avatar-like unevenness will occur during high-pressure steam sterilization (because it comes into direct contact with steam), and the high product value will be significantly impaired. The preferred range is 0.922-0.
930 g / cm 3 , LLDPE forming the innermost layer
A higher density than that of (A) is selected. Of course, (A) and (B) may be the same LLDPE.

【0013】次に、(C)の結晶性ポリプロピレンもし
くはこれを主成分とする結晶性コポリマー(以下PPと
称す)は通常の立体規則性構造のポリプロピレンすなわ
ちアイソタクチックもしくはシンジオタクチックタイプ
のポリマーである。
Next, the crystalline polypropylene (C) or the crystalline copolymer containing the same as the main component (hereinafter referred to as PP) is a polypropylene having a normal stereoregular structure, that is, an isotactic or syndiotactic type polymer. is there.

【0014】これらは適宜選択されるが、透明性や柔軟
性という点でコポリマー特にランダムコポリマーが有利
である。コモノマーとしてはエチレン、ブテン−1、ペ
ンテン−1、ヘキセン−1、オクテン−1、デセン−
1、ドデセン−1、4−メチルペンテン−1など炭素原
子数2〜12のα−オレフィン類がよく、コモノマー量
は好ましくは3〜40モル%程度、より好ましくは5〜
30モル%程度が適当である。
These are appropriately selected, but copolymers, particularly random copolymers, are advantageous in terms of transparency and flexibility. As the comonomer, ethylene, butene-1, pentene-1, hexene-1, octene-1, decene-
1, α-olefins having 2 to 12 carbon atoms such as 1, dodecene-1, 4-methylpentene-1 are preferable, and the comonomer amount is preferably about 3 to 40 mol%, more preferably 5 to
About 30 mol% is suitable.

【0015】特に好ましいPPは曲げ弾性率(JISK
7203)が9,000kg/cm2 以下でビカット軟
化点(JISK7206)が100℃以上のものであ
り、柔軟性、透明性及び耐熱性のバランスの点から好適
である。そしてPPは重合体組成物(E)の成形性、成
形物の力学的性質などを考慮すると、温度230℃、荷
重2,160gにおけるMFRが好ましくは0.3〜2
0、より好ましくは0.5〜10であるのがよい。
A particularly preferred PP is a flexural modulus (JISK
7203) is 9,000 kg / cm 2 or less and the Vicat softening point (JISK7206) is 100 ° C. or more, which is preferable from the viewpoint of the balance of flexibility, transparency and heat resistance. In consideration of the moldability of the polymer composition (E) and the mechanical properties of the molded product, PP has an MFR of preferably 0.3 to 2 at a temperature of 230 ° C. and a load of 2,160 g.
It is preferably 0, more preferably 0.5 to 10.

【0016】次に(D)のうちポリプロピレン系アモル
ファスポリマー(以下APPと称す)は非晶性のアタク
チックポリプロピレンまたはこれを主成分とするポリマ
ーであり、(C)で述べたPPの製造工程で副生をする
他、ラジカル重合等で製造され得る。コポリマーの場合
は(C)におけると同様のコモノマーが用いられる。本
発明で用いられるAPPの性質としては190℃におけ
る溶融粘度が300〜100,000cps、より好ま
しくは500〜80,000cpsであって、環球法で
測定した軟化点が好ましくは100〜160℃、より好
ましくは110〜150℃であるのがよい。
Next, in (D), a polypropylene-based amorphous polymer (hereinafter referred to as APP) is amorphous atactic polypropylene or a polymer containing this as a main component, and in the PP manufacturing process described in (C). Besides producing by-products, it can be produced by radical polymerization or the like. In the case of copolymers, the same comonomers as in (C) are used. The APP used in the present invention has a melt viscosity at 190 ° C. of 300 to 100,000 cps, more preferably 500 to 80,000 cps, and a softening point measured by the ring and ball method of preferably 100 to 160 ° C. It is preferably 110 to 150 ° C.

【0017】また、(D)のうちポリブテン系アモルフ
ァスポリマー(以下APBと称す)とはブテン−1及び
/またはイソブチレンを主成分とする無定形ポリブテン
系ポリマーを意味し、通常公知の方法で得られる。これ
らのうちで特に好ましいのは、イソブチレンを主成分と
しブテン−1を5〜30%程度コモノマーとして含むポ
リマーである。そして、成形性、力学的性質などから、
APBは100℃における動粘度が好ましくは2,00
0〜20,000cst、より好ましくは2,500〜
10,000cst程度であって、流動点が好ましくは
10〜50℃、より好ましくは15〜45℃程度のもの
がよい。
The polybutene-based amorphous polymer (hereinafter referred to as APB) in (D) means an amorphous polybutene-based polymer containing butene-1 and / or isobutylene as a main component, and can be obtained by a generally known method. . Particularly preferred among these are polymers containing isobutylene as a main component and butene-1 as a comonomer in an amount of about 5 to 30%. And from the moldability and mechanical properties,
APB preferably has a kinematic viscosity at 100 ° C. of 2,000.
0 to 20,000 cst, more preferably 2,500 to
It is about 10,000 cst and the pour point is preferably 10 to 50 ° C, more preferably 15 to 45 ° C.

【0018】重合体組成物は前記のPP(C)とAPP
もしくはAPB(D)とから構成されるが、柔軟性、成
形性、シート形成能、力学的性質などの点からAPPも
しくはAPBが重合体組成物中の20〜80重量%、よ
り好ましくは25〜70重量%を占めるのがよい。
The polymer composition comprises the above-mentioned PP (C) and APP.
Alternatively, it is composed of APB (D), but from the viewpoint of flexibility, moldability, sheet forming ability, mechanical properties, etc., APP or APB is 20 to 80% by weight, more preferably 25 to 50% by weight in the polymer composition. It should be 70% by weight.

【0019】冒頭に記載した如く、本発明の医療容器用
基材はLDPE(A)を最内層、密度0.920g/c
3 以上のLLDPE(B)を最外層、PP(C)とA
PPもしくはAPB(D)との重合体組成物(E)を中
間層とする多層体である。かような形態とすることによ
って、良好な透明性、柔軟性、耐熱性及び熱シール性が
発現する。
As described at the beginning, the substrate for medical containers of the present invention comprises LDPE (A) as the innermost layer and a density of 0.920 g / c.
m 3 or more LLDPE (B) is the outermost layer, PP (C) and A
It is a multilayer body having an intermediate layer of the polymer composition (E) with PP or APB (D). With such a form, excellent transparency, flexibility, heat resistance and heat sealability are exhibited.

【0020】ここで、本発明の医療容器用基材は必ずし
も3層型の多層体を意味しない。少なくとも上記要件を
満たしていればよく4層型(例えば(A)/(B)/
(E)/(B)、(A)/(E)/(A)/(B))、
5層型(例えば(A)/(E)/(A)/(E)/
(B)、(A)/(E)/(B)/(E)/(B))な
ど多様な形態をとることができる。
Here, the medical container substrate of the present invention does not necessarily mean a three-layer type multilayer body. It is sufficient that at least the above requirements are met, a four-layer type (eg (A) / (B) /
(E) / (B), (A) / (E) / (A) / (B)),
5-layer type (eg (A) / (E) / (A) / (E) /
Various forms such as (B) and (A) / (E) / (B) / (E) / (B)) are possible.

【0021】また、(A)と(E)との間:(B)と
(E)との間などに接着用ポリマー(例えば無水マレイ
ン酸、酢酸ビニル、メタクリル酸メチルなどで変性した
ポリエチレンやポリプロピレン)を用いてもよい。
Between (A) and (E): Between (B) and (E), etc., an adhesive polymer (eg, polyethylene or polypropylene modified with maleic anhydride, vinyl acetate, methyl methacrylate, etc.). ) May be used.

【0022】また、上記多層体の厚さは、医療容器用基
材の用途に要求される柔軟性、透明性、耐熱性、強度、
ガスバリアー性などによって異なるが、一般にはシート
の場合、全体の肉厚は0.10〜1.0mm、より好ま
しくは0.1〜0.8mm位が適当であり、(A)、
(B)、及び(E)の1層あたりの厚さはそれぞれ0.
01〜0.10mm、0.01〜0.10mm及び0.
05〜0.8mm、より好ましくは0.015〜0.0
8mm、0.015〜0.08mm及び0.1〜0.7
mm程度がよい。
Further, the thickness of the above-mentioned multi-layered body depends on the flexibility, transparency, heat resistance, strength, etc. required for the use of the substrate for medical containers.
Generally, in the case of a sheet, the total thickness is 0.10 to 1.0 mm, more preferably 0.1 to 0.8 mm, although it depends on the gas barrier property, etc. (A),
The thickness per layer of (B) and (E) is 0.
01-0.10 mm, 0.01-0.10 mm and 0.
05-0.8 mm, more preferably 0.015-0.0
8 mm, 0.015-0.08 mm and 0.1-0.7
mm is preferable.

【0023】(A)や(B)の厚さの増大は(特に滅菌
後の)透明性が低下する方向であるので注意を要する。
It should be noted that the increase in the thickness of (A) or (B) tends to decrease the transparency (particularly after sterilization).

【0024】チューブの場合は全体の肉厚が0.5〜
3.0mm、より好ましくは0.8〜2.0mm程度が
良く、(A)及び(B)の1層あたりの厚さをシートの
場合と同程度にすればよい。(E)の1層あたりの厚さ
は好ましくは0.1〜2.5mm、より好ましくは0.
2〜1.5mm程度がよい。なお、チューブの内径は1
〜20mm、更に好ましくは2〜15mm位である。
In the case of a tube, the total wall thickness is 0.5 to
The thickness is preferably 3.0 mm, more preferably about 0.8 to 2.0 mm, and the thickness of each layer of (A) and (B) may be the same as that of the sheet. The thickness of (E) per layer is preferably 0.1 to 2.5 mm, more preferably 0.1.
About 2 to 1.5 mm is preferable. The inner diameter of the tube is 1
It is about 20 mm, more preferably about 2 to 15 mm.

【0025】本発明において医療容器とは血液、医薬液
等医療において扱われる液体を保存あるいは搬送する容
器やチューブを意味するが、かような製品は通常公知の
方法で得られる。
In the present invention, the medical container means a container or a tube for storing or carrying a liquid such as blood or a medical liquid used in medical treatment, and such a product can be obtained by a generally known method.

【0026】容器の場合は、多層用Tダイあるいは多層
用サーキュラーダイを介して押出し(溶融温度は160
〜210℃、より好ましくは170〜200℃)、得ら
れたフラット状のシート、チューブ状のシート、パリソ
ンなどについてサーモフォーミング、ブロー、延伸、裁
断、融着(熱シール)などの手法を適宜活用して所定の
形状、形態に加工すればよい。熱シール性を考慮すると
シートは無延伸状態のままがよい。熱シールは温度17
0〜200℃、圧力5kg/cm2以下、時間7秒以内
で行われ得る。これに対し最内層(シール層)がPPの
場合は温度210〜250℃位の条件が必要となる他、
仕上がり状態での不良が発生しやすい。
In the case of a container, it is extruded through a multi-layer T die or a multi-layer circular die (melting temperature is 160).
To 210 ° C., more preferably 170 to 200 ° C.), for the obtained flat sheet, tubular sheet, parison, etc., appropriately utilizing techniques such as thermoforming, blowing, stretching, cutting, and fusion (heat sealing). Then, it may be processed into a predetermined shape and form. Considering the heat-sealing property, the sheet may remain unstretched. Heat seal is temperature 17
It may be performed at 0 to 200 ° C., a pressure of 5 kg / cm 2 or less, and a time within 7 seconds. On the other hand, when the innermost layer (sealing layer) is PP, a temperature of 210 to 250 ° C. or so is required.
Defects are likely to occur in the finished state.

【0027】なお、本発明の趣旨を損なわない範囲で、
スチレン系エラストマーやオレフィン系エラストマーを
(A)、(B)、(E)いずれかの層に添加したり、特
に(B)層に少量の(好ましくは10〜30重量%の)
高圧法LDPEをブレンドしたりしてもよい。また、シ
ート間のブロッキングを防ぐために容器の内面や外面を
粗面化すること、アンチブロッキング剤やスリップ剤を
添加することもあり得る。
In the range that does not impair the gist of the present invention,
A styrene-based elastomer or an olefin-based elastomer is added to any of the layers (A), (B) and (E), and particularly a small amount (preferably 10 to 30% by weight) is added to the (B) layer.
High pressure method LDPE may be blended. Further, in order to prevent blocking between the sheets, the inner surface or outer surface of the container may be roughened, and an anti-blocking agent or a slip agent may be added.

【0028】チューブの製造は多層押出し成形で行うの
が通常である。
The tube is usually manufactured by multi-layer extrusion.

【0029】本発明の基材は血液成分保存容器として、
また生理食塩水、電解質液、デキストラン製剤、マンニ
トール製剤、糖類製剤、アミノ酸製剤、脂肪乳剤などの
容器として特に有用である。
The substrate of the present invention is used as a blood component storage container,
It is also particularly useful as a container for physiological saline, electrolyte solution, dextran preparation, mannitol preparation, saccharide preparation, amino acid preparation, fat emulsion and the like.

【0030】[0030]

【実施例】以下実施例によって本発明をさらに具体的に
説明するが、本発明はこれらに何ら限定されるものでは
ない。
The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

【0031】(実施例1〜5、比較例1,2) (1)ポリマー原料およびシートについて 原料ポリマー(A)〜(D):使用した原料ポリマー
を表1に示す。
(Examples 1 to 5, Comparative Examples 1 and 2) (1) Polymer Raw Materials and Sheets Raw Polymers (A) to (D): The raw polymers used are shown in Table 1.

【0032】重合体組成物(E)の調製:PP及びA
PP(もしくはAPB)を原料とし、45mmφの二軸
溶融混練押出機を用いて、所定の割合で190〜200
℃の温度範囲で混練して押出されたストランドを水冷・
カッティング・乾燥して表1に示すペレット状重合体組
成物を得た。
Preparation of polymer composition (E): PP and A
Using PP (or APB) as a raw material and using a 45 mmφ biaxial melt kneading extruder, a predetermined ratio of 190 to 200
The strands that have been kneaded and extruded in the temperature range of ℃ are cooled with water.
The pelletized polymer composition shown in Table 1 was obtained by cutting and drying.

【0033】シートの作製:多層用のTダイから18
0℃(比較例2は210℃)で3層シートを押出し、2
0℃に保たれたキャスティングローラーで冷却後、トリ
ミングして厚さ0.36mm、幅200mmのシートを
5m/分の速度で捲き取った。
Sheet preparation: 18 from multi-layer T-die
The three-layer sheet was extruded at 0 ° C. (210 ° C. in Comparative Example 2), and 2
After cooling with a casting roller kept at 0 ° C., trimming was performed and a sheet having a thickness of 0.36 mm and a width of 200 mm was wound up at a speed of 5 m / min.

【0034】(2)シートの評価方法 多層シートの柔軟性の評価:(1)−で得られたシ
ートをダンベル状に裁断し、JISK7113に準じて
引張弾性率を測定し、柔軟性の尺度とした。
(2) Evaluation method of sheet Evaluation of flexibility of multilayer sheet: The sheet obtained in (1) -is cut into a dumbbell shape, and the tensile elastic modulus is measured according to JIS K7113, and is used as a measure of flexibility. did.

【0035】多層シートの透明性の評価:(1)−
で得られたシートを150mm×250mmの大きさに
裁断し、これを(A)層がシール層となるように熱シー
ルして(シール条件については(2)−に記載)バッ
グを作製し、生理食塩水500mlを入れて密封した。
この薬液入り容器をレトルト型高圧蒸気滅菌機に入れ、
温度110℃、ゲージ圧1.8kg/cm2 、時間30
分の条件で処理した。室温まで冷却し、48時間放置
後、シートを切り取って波長450nmにおける水中透
過率を島津ダブルビーム型自記分光光度計UV−300
にて測定し、透明性の尺度とした。
Evaluation of Transparency of Multilayer Sheet: (1)-
The sheet obtained in (1) is cut into a size of 150 mm × 250 mm, and heat-sealed so that the layer (A) serves as a sealing layer (for the sealing conditions, refer to (2)-) to prepare a bag, 500 ml of physiological saline was added and sealed.
Put this chemical solution container in a retort type high pressure steam sterilizer,
Temperature 110 ° C, gauge pressure 1.8 kg / cm 2 , time 30
It was processed under the condition of minutes. After cooling to room temperature and leaving it for 48 hours, the sheet was cut out and the transmittance in water at a wavelength of 450 nm was measured by Shimadzu double beam type self-recording spectrophotometer UV-300.
Was used as a measure of transparency.

【0036】多層シートの熱シール性の評価:(1)
−で得られたシートを(C)層がシール層となるよう
に2枚合わせ、10mm幅×20mm長のシール寸法
で、圧力2kg/cm2 、時間5秒の条件において温度
範囲160〜230℃で熱シールした。そして熱シール
後のサンプルについて引張試験機を用いて180℃剥離
強度を測定し、2kg/cmの接着強度が確保され、か
つ「バリ」(肉溜りまたはハミダシ)の発生の少ない時
の温度を「適正シール温度」と判定した((2)−の
容器はこの適正シール温度の範囲で作製した)。
Evaluation of heat sealability of multilayer sheet: (1)
The two sheets obtained in the step (-) are combined so that the layer (C) serves as a sealing layer, the sealing dimension is 10 mm width × 20 mm length, and the temperature range is 160 to 230 ° C. under the condition of pressure 2 kg / cm 2 and time 5 seconds. It was heat sealed with. Then, the heat-sealed sample was measured for peeling strength at 180 ° C. using a tensile tester, and the adhesive strength of 2 kg / cm was ensured, and the temperature at which “burrs” (meat accumulation or humpback) were less likely to occur was measured as “temperature”. It was determined to be "appropriate seal temperature" (the container (2)-was manufactured within this proper seal temperature range).

【0037】重金属及び溶出物試験:日本薬局方一般
試験法「輸液用プラスチック容器試験法」に準じ、で
得られたシートについて試験を行った。
Heavy metal and eluate test: The sheet obtained in accordance with the Japanese Pharmacopoeia general test method "Plastic container test method for infusion" was tested.

【0038】[0038]

【表1】 [Table 1]

【0039】(3)実験結果(表2参照) シートの押出し成形は順調に行われ、いずれの組成に
おいても、異物、発泡、ブロッキングなどは観察され
ず、均一性に富むシートが得られた。
(3) Experimental results (see Table 2) Extrusion molding of the sheet was carried out smoothly, and no foreign matter, foaming, blocking, etc. were observed in any composition, and a highly uniform sheet was obtained.

【0040】いずれの組成においても重金属及び溶出
物試験の結果は日本薬局方に適合することが確認され
た。
It was confirmed that the results of the heavy metal and eluate tests were compatible with the Japanese Pharmacopoeia in any composition.

【0041】表2にシート組成と柔軟性、透明性及び
熱シール性との関係を示すように、最内層をLLDP
E、中間層をPPとAPP(もしくはAPB)との重合
体組成物、最外層を密度0.920g/cm3 以上のL
LDPEとする多層シートの性能はいずれも良好であっ
た。
As shown in Table 2 which shows the relationship between the sheet composition and the flexibility, transparency and heat sealability, the innermost layer is LLDP.
E, the intermediate layer is a polymer composition of PP and APP (or APB), and the outermost layer is L having a density of 0.920 g / cm 3 or more.
The performance of the multi-layered sheet made of LDPE was good.

【0042】これに対し、最内層PPとするとシール温
度を高温にせざるを得ないため柔軟な中間層がシール部
からはみ出してしまい、良好な状態でシールできなかっ
た(比較例2)。
On the other hand, when the innermost layer PP is used, the sealing temperature must be raised to a high temperature, so that the flexible intermediate layer protrudes from the sealing portion and the sealing cannot be performed in a good condition (Comparative Example 2).

【0043】また、最外層のLLDPEの密度が低すぎ
ると、高圧蒸気滅菌によるアバタの発生や白化現象が観
察された(比較例1)。
When the density of LLDPE in the outermost layer was too low, avatar generation and whitening phenomenon due to high-pressure steam sterilization were observed (Comparative Example 1).

【0044】[0044]

【表2】 [Table 2]

【0045】[0045]

【発明の効果】以上記載した如く、本発明の医療容器用
基材は「比較的高密度の」線状低密度ポリエチレンの耐
熱性、アモルファスポリオレフィンの柔軟性及び低密度
ポリエチレンの良好な熱シール性を巧みに利用して生じ
たものであり、透明性、柔軟性、耐熱性及び製袋性に優
れ、成形性も良好であるのでその工業的価値は高いもの
がある。
As described above, the medical container substrate of the present invention has a heat resistance of "relatively high density" linear low density polyethylene, flexibility of amorphous polyolefin and good heat sealability of low density polyethylene. It is produced by skillfully utilizing, and is excellent in transparency, flexibility, heat resistance and bag-making property, and also has good moldability, so that it has a high industrial value.

【0046】[0046]

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】低密度ポリエチレン(A)が最内層を、密
度0.920g/cm3 以上の線状低密度ポリエチレン
(B)が最外層を形成し、結晶性ポリプロピレンもしく
はこれを主成分とする結晶性コポリマー(C)とアモル
ファスポリプロピレンもしくはポリブテン(D)との重
合体組成物(E)が中間層である多層体からなる医療容
器用基材。
1. A low density polyethylene (A) forms an innermost layer, and a linear low density polyethylene (B) having a density of 0.920 g / cm 3 or more forms an outermost layer, and crystalline polypropylene or a main component thereof is used. A substrate for a medical container comprising a multi-layer body in which a polymer composition (E) of a crystalline copolymer (C) and amorphous polypropylene or polybutene (D) is an intermediate layer.
JP5279481A 1993-11-09 1993-11-09 Base material for medical vessel Pending JPH07124244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5279481A JPH07124244A (en) 1993-11-09 1993-11-09 Base material for medical vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5279481A JPH07124244A (en) 1993-11-09 1993-11-09 Base material for medical vessel

Publications (1)

Publication Number Publication Date
JPH07124244A true JPH07124244A (en) 1995-05-16

Family

ID=17611651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5279481A Pending JPH07124244A (en) 1993-11-09 1993-11-09 Base material for medical vessel

Country Status (1)

Country Link
JP (1) JPH07124244A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005537158A (en) * 2002-08-30 2005-12-08 アルザ・コーポレーシヨン Embossable and writable multilayer lining structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005537158A (en) * 2002-08-30 2005-12-08 アルザ・コーポレーシヨン Embossable and writable multilayer lining structure
US9078833B2 (en) 2002-08-30 2015-07-14 Alza Corporation Multilaminate backing construction
US9248105B2 (en) 2002-08-30 2016-02-02 Alza Corporation Multilaminate backing construction
US9522122B2 (en) 2002-08-30 2016-12-20 Alza Corporation Multilaminate backing construction

Similar Documents

Publication Publication Date Title
NZ210022A (en) Heat sterilisable polymeric laminate
JPH05293160A (en) Bag for medical treatment
JPH09262948A (en) Resin laminate and its application
JP2003516248A (en) Autoclavable PVC-free multilayer film, especially for packing liquid pharmaceuticals, process for its preparation and its use
JP2022115886A (en) Chemical liquid storing plastic container
CA2484122C (en) Multilayered polymer based thin film structure for medical grade products
JP3549643B2 (en) Medical substrate
JP4393772B2 (en) Medical container
JPH0147188B2 (en)
JPH07164604A (en) Base material for medicare container
JP3054426B2 (en) Medical bag
JPH07124244A (en) Base material for medical vessel
JPH07125158A (en) Base material for medical vessel
JP3625497B2 (en) Medical container base material
JPH06169974A (en) Base material for polyolefin medical care container
JPH07125159A (en) Base material for medical vessel
JPH06171040A (en) Polyolefin-based base material for medical container
JP3973703B2 (en) Medical multi-chamber container
JPH0999035A (en) Vessel for medical treatment
JP3243084B2 (en) Base material for medical containers
JP3244349B2 (en) Base material for medical containers
JP4906159B2 (en) Laminated body and medical bag
JPH06169972A (en) Base material for polyolefin medical care container
JPH06209981A (en) Basic member for medical container
JP3038029B2 (en) Polymer composition for medical containers