JPH06270356A - Multilayered film and container - Google Patents
Multilayered film and containerInfo
- Publication number
- JPH06270356A JPH06270356A JP5064254A JP6425493A JPH06270356A JP H06270356 A JPH06270356 A JP H06270356A JP 5064254 A JP5064254 A JP 5064254A JP 6425493 A JP6425493 A JP 6425493A JP H06270356 A JPH06270356 A JP H06270356A
- Authority
- JP
- Japan
- Prior art keywords
- density
- polyolefin resin
- layer
- ethylene
- olefin copolymer
- 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.)
- Granted
Links
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 20
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000005977 Ethylene Substances 0.000 claims abstract description 15
- 239000004711 α-olefin Substances 0.000 claims abstract description 15
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 229920006378 biaxially oriented polypropylene Polymers 0.000 abstract 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 description 11
- 238000004659 sterilization and disinfection Methods 0.000 description 11
- 229920001577 copolymer Polymers 0.000 description 9
- 229920000092 linear low density polyethylene Polymers 0.000 description 9
- 239000004707 linear low-density polyethylene Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001179 medium density polyethylene Polymers 0.000 description 3
- 239000004701 medium-density polyethylene Substances 0.000 description 3
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1-dodecene Chemical compound CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N 1-nonene Chemical compound CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- DCTOHCCUXLBQMS-UHFFFAOYSA-N 1-undecene Chemical compound CCCCCCCCCC=C DCTOHCCUXLBQMS-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 229940069096 dodecene Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Bag Frames (AREA)
- Wrappers (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多層フィルム及びそれ
を用いて成形された容器に関する。詳しくは、医療の分
野において、特に薬液や血液などを収容するために用い
られるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilayer film and a container formed by using the multilayer film. More specifically, it is used in the medical field, in particular, for containing drug solutions, blood, and the like.
【０００２】[0002]
【従来の技術】従来の医療用ポリエチレン系多層容器の
例として、以下のものを挙げることができる。 ＊特開昭６２−６４３６３号＊ 直鎖状低密度ポリエチレンからなり、内外層の密度が
０．９２０ｇ／cm3 以上、中間層の密度が０．９２０ｇ
／cm3 未満である３層の袋。2. Description of the Related Art The following may be mentioned as examples of conventional polyethylene multi-layer containers for medical use. * JP-A-62-64363 * Made of linear low-density polyethylene, the inner and outer layers have a density of 0.920 g / cm 3 or more, and the intermediate layer has a density of 0.920 g.
A three-layer bag that is less than / cm 3 .
【０００３】＊特開昭６３−２４８６３３号＊ 直鎖状低密度ポリエチレンからなる３層で、内外層の密
度が０．９１０〜０．９４０ｇ／cm3 、中間層の密度が
０．８８０〜０．９０５ｇ／cm3 で、両者の密度差が
０．０１ｇ／cm3 以上である容器。 ＊特開平３−２７７３６５号＊ 外層が密度０．９２０ｇ／cm3 以上の直鎖状低密度ポリ
エチレン、中間層が密度０．９１５ｇ／cm3 以下の直鎖
状低密度ポリエチレン、内層が密度０．９１８ｇ／cm3
以上の分岐状低密度ポリエチレンである３層袋。* Japanese Patent Laid-Open No. 63-248633 * Three layers of linear low-density polyethylene, the inner and outer layers having a density of 0.910 to 0.940 g / cm 3 , and the intermediate layer having a density of 0.880 to 0. in .905g / cm 3, the container density difference between the two is 0.01 g / cm 3 or more. * JP-A-3-277365 * Linear low density polyethylene having a density of 0.920 g / cm 3 or more in the outer layer, linear low density polyethylene having a density of 0.915 g / cm 3 or less in the intermediate layer, and density of 0. 918 g / cm 3
A three-layer bag that is the above branched low-density polyethylene.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記のもの
は、以下のような欠点を少なくとも一つ有している。 ・内外層を低密度のポリエチレン樹脂で構成しているた
めに耐熱性が充分でなく、高圧蒸気滅菌や熱水滅菌など
の高温条件の滅菌により、シール強度及び落下強度が低
下する。 ・特に高温滅菌後にブロッキングを起こし易い。 ・フィルム全体の強度をもたせるために、肉厚を厚くす
る必要がある。 ・引っ張り強度が充分でないので、製袋速度を上げるこ
とができない。 ・ヒートシールする際、ヒーターの温度を高くできない
ので、短時間でシールできない。 ・滅菌後などに透明性が低下することがある。However, the above has at least one of the following drawbacks. -Since the inner and outer layers are made of low-density polyethylene resin, heat resistance is not sufficient, and sterilization under high temperature conditions such as high-pressure steam sterilization and hot water sterilization reduces seal strength and drop strength.・ Especially easy to cause blocking after high temperature sterilization. -It is necessary to increase the thickness of the film in order to give it strength.・ Because the tensile strength is not sufficient, the bag making speed cannot be increased.・ When heat-sealing, the temperature of the heater cannot be raised, so it cannot be sealed in a short time.・ Transparency may decrease after sterilization.
【０００５】そこで、本発明においては、上記の欠点を
一掃した医療用に適したフィルム及び容器を提供するこ
とを目的としている。Therefore, it is an object of the present invention to provide a film and a container suitable for medical use, in which the above drawbacks are eliminated.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
め、本発明による多層フィルムとしては、外層が２軸延
伸されたポリオレフィン樹脂からなり、中間層が柔軟性
ポリオレフィン樹脂層からなり、内層が耐熱性ポリオレ
フィン樹脂からなることを特徴としている。また、本発
明の好ましい実施態様として、外層が２軸延伸された密
度０．９６０ｇ／cm3 以上のエチレン・α−オレフィン
共重合体又は２軸延伸されたポリプロピレンであり、柔
軟性ポリオレフィン樹脂が密度０．９２０ｇ／cm3 以下
の直鎖状エチレン・α−オレフィン共重合体であり、耐
熱性ポリオレフィン樹脂が密度０．９２５ｇ／cm3 以上
０．９５０ｇ／cm3 以下の直鎖状エチレン・α−オレフ
ィン共重合体であることを特徴とする。In order to achieve the above object, the multilayer film according to the present invention comprises a biaxially stretched polyolefin resin as an outer layer, a flexible polyolefin resin layer as an intermediate layer, and an inner layer as a flexible layer. It is characterized by being made of a heat-resistant polyolefin resin. In a preferred embodiment of the present invention, the outer layer is a biaxially stretched ethylene / α-olefin copolymer having a density of 0.960 g / cm 3 or more or a biaxially stretched polypropylene, and the flexible polyolefin resin has a density of 0.920 g / cm 3 or less of a linear ethylene · alpha-olefin copolymer, the heat resistance polyolefin resin density 0.925 g / cm 3 or more 0.950 g / cm 3 or less linear ethylene · alpha- It is characterized by being an olefin copolymer.
【０００７】更に、本発明による容器としては、上記の
多層フィルムを用いて成形されていることを特徴として
いる。以下、本発明を更に詳しく説明する。本発明フィ
ルムに用いるエチレン・α−オレフィン共重合体におい
て、α−オレフィンとしては例えばプロピレン、１−ブ
テン、１−ペンテン、１−ヘキセン、４−メチル−１−
ペンテン、１−ヘプテン、１−オクテン、１−ノネン、
１−デセン、１−ウンデセン、１−ドデセン等の炭素数
３〜１２のものを挙げることができる。そして、各層を
構成する樹脂はそれぞれ以下の性質を有するものであ
る。 ＊外層としては、機械強度、透明性、耐熱性を必要とす
るので、ポリオレフィン樹脂フィルムを公知の方法によ
り２軸延伸加工したものを用いる。ポリオレフィンとし
ては、ポリプロピレンあるいは密度０．９６０ｇ／cm3
以上の高密度ポリエチレンとなるエレチン・α−オレフ
ィン共重合体が用いられ、特に後者が好ましい。ポリプ
ロピレンを用いる場合は、ホモポリマー或いは少量のエ
チレン又はα−オレフィンを含む共重合体のいずれでも
よい。いずれの樹脂を用いても、延伸は縦横方向に５〜
４０倍程度とするのが一般的である。厚みは全体の５〜
２５％とするのがよい。 ＊中間層としては、高い柔軟性と透明性を兼ね備えたポ
リオレフィン樹脂の層を配する。該ポリオレフィンとし
ては、密度０．９２０ｇ／cm3 以下、好ましくは密度
０．９０５ｇ／cm3 以下の直鎖状エチレン・α−オレフ
ィン共重合体（ＬＬＤＰＥ）が用いられ、特にエチレン
・α−オレフィン系エラストマー又はそれを配合した樹
脂組成物を用いるのがより好適である。いずれの場合
も、柔軟性ポリオレフィン樹脂層の厚みは全体の６０〜
８５％とするのがよい。 ＊内層としては、耐熱性、耐ブロッキング性ポリオレフ
ィン樹脂を配し、高温条件の滅菌に耐え得るうえに、シ
ール強度を保つようにする。具体的には密度０．９２５
ｇ／cm3以上０．９５０ｇ／cm3 以下の直鎖状エチレン
・α−オレフィン共重合体を用いる。厚みは全体の５〜
２５％とするのがよい。 ＊本発明による多層フィルムの製造方法としては、通常
の共押出しラミネーションにより製造できる。即ち、ま
ず外層となる２軸延伸ポリオレフィン樹脂フィルムをＴ
ダイ法等の公知の方法により製造し、その上に共押出し
インフレーション法や共押出しＴダイ法により製造した
中間層と内層のフィルムを溶融状態で重ねていくことに
より製造する。Further, the container according to the present invention is characterized by being molded using the above-mentioned multilayer film. Hereinafter, the present invention will be described in more detail. In the ethylene / α-olefin copolymer used in the film of the present invention, examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, and 4-methyl-1-.
Pentene, 1-heptene, 1-octene, 1-nonene,
Examples thereof include those having 3 to 12 carbon atoms such as 1-decene, 1-undecene and 1-dodecene. The resin that constitutes each layer has the following properties. * Since the outer layer requires mechanical strength, transparency and heat resistance, a biaxially stretched polyolefin resin film is used by a known method. As polyolefin, polypropylene or density 0.960 g / cm 3
The eletin / α-olefin copolymers to be the above high-density polyethylene are used, and the latter is particularly preferable. When polypropylene is used, it may be either a homopolymer or a copolymer containing a small amount of ethylene or α-olefin. No matter which resin is used, the stretching is 5 to 5 in the longitudinal and transverse directions.
It is generally about 40 times. The total thickness is 5
25% is recommended. * As the intermediate layer, a layer of polyolefin resin having both high flexibility and transparency is arranged. As the polyolefin, a linear ethylene / α-olefin copolymer (LLDPE) having a density of 0.920 g / cm 3 or less, preferably 0.905 g / cm 3 or less is used. It is more preferable to use an elastomer or a resin composition containing the elastomer. In either case, the total thickness of the flexible polyolefin resin layer is 60 to
It is better to set it to 85%. * As the inner layer, heat-resistant and blocking-resistant polyolefin resin is placed so that it can withstand sterilization under high temperature conditions and at the same time maintains the seal strength. Specifically, density 0.925
g / cm 3 or more 0.950 g / cm 3 using the following linear ethylene · alpha-olefin copolymer. The total thickness is 5
25% is recommended. * As a method for producing the multilayer film according to the present invention, it can be produced by usual co-extrusion lamination. That is, first, the biaxially stretched polyolefin resin film as the outer layer is T
It is produced by a known method such as a die method, and the intermediate layer and the inner layer film produced by the coextrusion inflation method or the coextrusion T-die method are superposed on each other in a molten state.
【０００８】上記により製造される本発明による多層フ
ィルムの厚みは、一般に１００〜３００μであるが、使
用目的等に応じて適宜増減でき、１４０μ程度の厚みで
も充分な強度を保持している。 ＊本発明による多層フィルムから成形される容器の製造
方法としては、上記により得られるチューブ状あるいは
シート状フィルムを、通常の方法により裁断、ヒートシ
ールし、更に口部材などをヒートシール等の手段により
取り付け、所定の形状、寸法の容器を製造する。フィル
ムのヒートシールの条件としては、温度は１３０℃から
１８０℃程度まで上げることができ、例えば２００μ前
後の厚さのフィルムの場合、前記の温度範囲では０．５
〜３秒という短い時間でシールできる。尚、口部材をエ
チレン・α−オレフィン共重合体樹脂製とすれば、本発
明フィルムの内層とよく溶着するので好ましい。The thickness of the multilayer film according to the present invention produced as described above is generally 100 to 300 μm, but it can be appropriately increased or decreased according to the purpose of use and the like, and a sufficient strength is maintained even at a thickness of about 140 μm. * As a method for producing a container molded from the multilayer film according to the present invention, the tube-shaped or sheet-shaped film obtained above is cut and heat-sealed by a usual method, and the mouth member and the like are heat-sealed. Attach and manufacture a container of a given shape and size. As a condition for heat sealing the film, the temperature can be increased from 130 ° C. to 180 ° C. For example, in the case of a film having a thickness of about 200 μ, the above temperature range is 0.5.
It can be sealed in a short time of ~ 3 seconds. In addition, it is preferable that the mouth member is made of an ethylene / α-olefin copolymer resin because it is well welded to the inner layer of the film of the invention.
【０００９】[0009]
【実施例】本発明の実施例について、以下に説明する。
まず外層の２軸延伸フィルムを成形し、次に中間層と内
層からなるフィルムを共押出しラミネートして表１に示
す合成樹脂及び層構成の積層シートを製造した。続い
て、これらを用いて内容量５００ｍｌの医療用容器を成
形した。尚、容器成形の際のフィルムのヒートシール
は、１４０℃で２秒間行なった。更に、得られた医療用
容器について、各種特性を以下の方法により評価した。
即ち、耐熱性は、内容液を充填した後に、１１０℃、４
０分間の高圧蒸気滅菌処理を施した後の変形、破袋、シ
ール漏れの状態を目視観察した。EXAMPLES Examples of the present invention will be described below.
First, a biaxially stretched film as an outer layer was molded, and then a film comprising an intermediate layer and an inner layer was coextruded and laminated to produce a laminated sheet having the synthetic resin and layer constitution shown in Table 1. Subsequently, using these, a medical container having an inner volume of 500 ml was molded. The heat sealing of the film at the time of molding the container was performed at 140 ° C. for 2 seconds. Furthermore, various characteristics of the obtained medical container were evaluated by the following methods.
That is, the heat resistance was 4 ° C at 110 ° C after filling with the content liquid.
The state of deformation, bag breakage, and seal leakage after the high-pressure steam sterilization treatment for 0 minutes was visually observed.
【００１０】落下試験は、約４℃に冷蔵した後、容器を
３方向から各５回、１．２ｍの高さから落下させた場合
の破袋、シール漏れの状態を目視観察した。柔軟性は、
内容液の自然排出性を目視観察した。透明性は、蒸留水
充填して高圧蒸気滅菌処理を施した後に目視観察を行な
い、更に４５０ｎｍでの水中光透過率を測定した。In the drop test, after refrigerating at about 4 ° C., the state of bag breakage and seal leakage when the container was dropped from a height of 1.2 m five times in each of three directions was visually observed. Flexibility is
The spontaneous discharge of the content liquid was visually observed. The transparency was measured by visual observation after filling with distilled water and subjecting to high-pressure steam sterilization treatment, and further measuring the light transmittance in water at 450 nm.
【００１１】加えて、全体的に外観の目視観察を行な
い、しわ、ブロッキング、変形、破袋の状況を調べた。
尚、表１中の略号は、それぞれ以下の通りである。 ・ＨＤＰＥ＝高密度ポリエチレン（エチレン・１−ブテ
ン共重合体） 〔東燃石油化学製；密度0.960g/cm3〕 ・ＬＬ＝直鎖状低密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.905g/cm3,MFR2.9g/10min〕 ・ＬＬ＝直鎖状低密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.905g/cm3,MFR2.1g/10min〕 ・ＬＬ＝直鎖状低密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.910g/cm3,MFR2.0g/10min〕 ・ＬＬ＝直鎖状低密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.920g/cm3,MFR2.1g/10min〕 ・ＬＭ＝直鎖状中密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.930g/cm3,MFR2.1g/10min〕 ・ＬＭ＝直鎖状中密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.935g/cm3,MFR2.1g/10min〕 ・ＬＭ＝直鎖状中密度ポリエチレン（エチレン・１−
ブテン共重合体） 〔三井石油化学製；密度0.940g/cm3,MFR2.1g/10min〕 また、◎は非常に良好、○は良好、△はやや不良、×は
不良を示す。In addition, the appearance was visually observed as a whole to check for wrinkles, blocking, deformation and bag breakage.
The abbreviations in Table 1 are as follows. - HDPE = high density polyethylene (ethylene-1-butene copolymer) [Tonen Petrochemical Co., Ltd .; density 0.960 g / cm 3], LL = linear low density polyethylene (ethylene-1
Butene Copolymer) [Mitsui Petrochemical; Density 0.905g / cm 3 , MFR2.9g / 10min] LL = Linear low density polyethylene (Ethylene.
Butene Copolymer) [Mitsui Petrochemical; Density 0.905g / cm 3 , MFR2.1g / 10min] LL = Linear low density polyethylene (Ethylene 1-
Butene Copolymer) [Mitsui Petrochemical; Density 0.910 g / cm 3 , MFR 2.0 g / 10 min] ・ LL = Linear Low Density Polyethylene (Ethylene 1-
Butene Copolymer) [Mitsui Petrochemical; Density 0.920g / cm 3 , MFR2.1g / 10min] ・ LM = Linear Medium Density Polyethylene (Ethylene 1-
Butene Copolymer) [Mitsui Petrochemical; Density 0.930 g / cm 3 , MFR 2.1 g / 10 min] ・ LM = Linear Medium Density Polyethylene (Ethylene-1
Butene Copolymer) [Mitsui Petrochemical; Density 0.935g / cm 3 , MFR2.1g / 10min] LM = Linear Medium Density Polyethylene (Ethylene 1-
Butene Copolymer) [Mitsui Petrochemical; Density 0.940 g / cm 3 , MFR 2.1 g / 10 min] Also, ⊚ is very good, ○ is good, Δ is a little bad, and x is a bad.
【００１２】[0012]
【表１】 [Table 1]
【００１３】上記表１より、本発明フィルム及び容器は
柔軟性、耐熱性、強度、透明性に優れていることが明ら
かである。From Table 1 above, it is clear that the film and container of the present invention are excellent in flexibility, heat resistance, strength and transparency.
【００１４】[0014]
【発明の効果】本発明による多層フィルム及び容器は、 ＊高圧蒸気滅菌や熱水滅菌などの高温滅菌に耐え得る ＊フィルム全体の厚みを薄くすることができる ＊引っ張り強度が優れ高速で製袋が可能である ＊ブロッキングを起こしにくい ＊高温で短時間でヒートシールができ、シール性も良好
である ＊すぐれた柔軟性や透明性を維持できる などの利点を有し、輸液バッグ、血液バッグなどの医療
用容器として好ましく用いることができる。EFFECTS OF THE INVENTION The multilayer film and container according to the present invention can withstand high temperature sterilization such as high-pressure steam sterilization or hot water sterilization. * The thickness of the entire film can be reduced. It is possible * It is difficult to cause blocking * It can be heat-sealed at high temperature in a short time and has good sealing property * It has advantages such as excellent flexibility and transparency and can be used for infusion bags, blood bags, etc. It can be preferably used as a medical container.
Claims (3)
からなり、中間層が柔軟性ポリオレフィン樹脂層からな
り、内層が耐熱性ポリオレフィン樹脂からなることを特
徴とする多層フィルム。1. A multilayer film, wherein an outer layer is made of a biaxially stretched polyolefin resin, an intermediate layer is made of a flexible polyolefin resin layer, and an inner layer is made of a heat resistant polyolefin resin.
cm3 以上のエチレン・α−オレフィン共重合体又は２軸
延伸されたポリプロピレンであり、柔軟性ポリオレフィ
ン樹脂が密度０．９２０ｇ／cm3 以下の直鎖状エチレン
・α−オレフィン共重合体であり、耐熱性ポリオレフィ
ン樹脂が密度０．９２５ｇ／cm3 以上０．９５０ｇ／cm
3 以下の直鎖状エチレン・α−オレフィン共重合体であ
る請求項１記載の多層フィルム。2. A biaxially stretched outer layer having a density of 0.960 g /
cm 3 or more ethylene / α-olefin copolymer or biaxially stretched polypropylene, and the flexible polyolefin resin is a linear ethylene / α-olefin copolymer having a density of 0.920 g / cm 3 or less, Heat-resistant polyolefin resin has a density of 0.925 g / cm 3 or more and 0.950 g / cm
The multilayer film according to claim 1, which is a linear ethylene / α-olefin copolymer having 3 or less.
て成形されたことを特徴とする容器。3. A container formed by using the multilayer film according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05064254A JP3105101B2 (en) | 1993-03-23 | 1993-03-23 | Multilayer film and container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05064254A JP3105101B2 (en) | 1993-03-23 | 1993-03-23 | Multilayer film and container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06270356A true JPH06270356A (en) | 1994-09-27 |
| JP3105101B2 JP3105101B2 (en) | 2000-10-30 |
Family
ID=13252861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05064254A Expired - Fee Related JP3105101B2 (en) | 1993-03-23 | 1993-03-23 | Multilayer film and container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3105101B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10119207A (en) * | 1996-10-24 | 1998-05-12 | Dainippon Printing Co Ltd | Laminate and its production |
| WO2004011252A1 (en) * | 2002-07-25 | 2004-02-05 | Toppan Printing Co., Ltd. | Laminated packaging material and packaging bag |
-
1993
- 1993-03-23 JP JP05064254A patent/JP3105101B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10119207A (en) * | 1996-10-24 | 1998-05-12 | Dainippon Printing Co Ltd | Laminate and its production |
| WO2004011252A1 (en) * | 2002-07-25 | 2004-02-05 | Toppan Printing Co., Ltd. | Laminated packaging material and packaging bag |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3105101B2 (en) | 2000-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100257632B1 (en) | Resin laminate | |
| JP4144904B2 (en) | Multilayer film and container | |
| TWI480159B (en) | Multilayer film and bag formed of the film | |
| KR100601747B1 (en) | Multilayered film and container obtained from the same | |
| WO2009122655A1 (en) | Multilayer film, medical fluid bags and process for production thereof, and method for sterilization of medical fluid bags | |
| JP3021258B2 (en) | Multilayer film and container | |
| JPH09262948A (en) | Resin laminate and its application | |
| KR20140022439A (en) | Plastic film and infusion solution bag | |
| JP2012085742A (en) | Laminated body for transfusion bag, and transfusion bag | |
| JP3076862B2 (en) | Multilayer film and container | |
| JP2706025B2 (en) | Multilayer film and container | |
| JP3105101B2 (en) | Multilayer film and container | |
| JP3080822B2 (en) | Multilayer film and container | |
| KR100187910B1 (en) | Multilayer film and container | |
| JP4933529B2 (en) | Multilayer film and container | |
| KR100347072B1 (en) | Multilayer Film For Medical Use | |
| JPH09176336A (en) | Film for easily peelable sealing and vessel using the same | |
| KR100513359B1 (en) | Flexible Film For Medical Packaging | |
| JPH07136234A (en) | Multilayered film for medical treatment and composite cell container | |
| KR200235080Y1 (en) | Multilayer Film For Medical Use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |