JPS63248633A - Plastic vessel - Google Patents
Plastic vesselInfo
- Publication number
- JPS63248633A JPS63248633A JP62077328A JP7732887A JPS63248633A JP S63248633 A JPS63248633 A JP S63248633A JP 62077328 A JP62077328 A JP 62077328A JP 7732887 A JP7732887 A JP 7732887A JP S63248633 A JPS63248633 A JP S63248633A
- Authority
- JP
- Japan
- Prior art keywords
- density
- ldpe
- transparency
- density polyethylene
- linear low
- 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
- 229920003023 plastic Polymers 0.000 title claims description 15
- 239000004033 plastic Substances 0.000 title claims description 15
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 10
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 10
- 239000004711 α-olefin Substances 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 description 16
- 239000004702 low-density polyethylene Substances 0.000 description 16
- 238000005452 bending Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 4
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 230000000704 physical effect Effects 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
Landscapes
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Containers Having Bodies Formed In One Piece (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】
産業上の利用分野
本発明は、透明性が要求される食品用及び医薬品用のプ
ラスチック容器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to plastic containers for food and medicine that require transparency.
従来の技術
食品用及び医薬品用のプラスチック容器は、耐熱性、柔
軟性、シール強度及び透明性が要求される。これらのプ
ラスチック容器は、内部に不純物が入っていないか検査
する必要があるため、とりわけ高い透明性が要求されて
いる。これらの物性を満足する素材として密度が０．９
１０〜０．９４０８／ｃ＋ｎ”程度のエチレンと α−
オレフィンとの共重合体からなる線状低密度ポリエチレ
ンが知られている。BACKGROUND OF THE INVENTION Plastic containers for food and pharmaceutical products require heat resistance, flexibility, seal strength, and transparency. These plastic containers must be inspected for impurities inside, so they require particularly high transparency. A material that satisfies these physical properties has a density of 0.9.
10~0.9408/c+n” of ethylene and α-
Linear low density polyethylene consisting of a copolymer with olefin is known.
発明が解決しようとする問題点
しかし、上記線状低密度ポリエチレンは、耐熱性、柔軟
性及びシール強度は有しているものの、第１表に示すよ
うに、充分な透明性を有していない。Problems to be Solved by the Invention However, although the above-mentioned linear low-density polyethylene has heat resistance, flexibility, and sealing strength, as shown in Table 1, it does not have sufficient transparency. .
本発明は、この点に鑑み発明されたもので、その目的と
するのは、第１に食品及び医薬品を内部に収容した際に
、内部が充分に見えるような透明性をうろことであり、
第２に１０５℃以上の高温殺菌の温度に耐えるだけの耐
熱性を有することであり、第３に人間の背の高さ程度の
位置から落下したとしても破袋することのない充分なシ
ール強度を得ることであり、第４に容易に曲げることの
できる程度の柔軟性を有することである。The present invention was invented in view of this point, and its first purpose is to provide transparency so that the inside can be seen sufficiently when food and medicine are stored inside.
Second, it must be heat resistant enough to withstand high-temperature sterilization temperatures of 105°C or higher, and third, it must have sufficient seal strength to prevent the bag from tearing even if it is dropped from a position about the height of a human. The fourth purpose is to have flexibility to the extent that it can be easily bent.
問題点を解決するための手段
そこで、本発明は、これらの目的を解決するために、そ
の構成を次のようにした。つまり、エチレンと α−オ
レフィンとの共重合体からなる線状低密度ポリエチレン
より構成されたプラスチック容器において、その内層及
び外層には０．９１０〜０．９４０ｇ／ａｍ３の線状低
密度ポリエチレンを配し、中間層には０．８８０〜０．
９０５８／Ｃｍ３の線状低密度ポリエチレンを配し、内
層及び外層と中間層との間に密度の差を少なくとも０．
０１ｇ／ｃｎ＋３設けたものである。Means for Solving the Problems In order to solve these objects, the present invention has the following configuration. In other words, in a plastic container made of linear low-density polyethylene made of a copolymer of ethylene and α-olefin, 0.910 to 0.940 g/am3 of linear low-density polyethylene is arranged in the inner and outer layers. However, for the middle layer, 0.880 to 0.
9058/Cm3 linear low density polyethylene is arranged, and the difference in density between the inner and outer layers and the intermediate layer is at least 0.
01g/cn+3.
なお、本発明の内層及び外層に配した線状低密度ポリエ
チレン（以下Ｌ−ＬＤＰＥという）とは、中圧、低圧ま
たは場合によっては高圧法でも得られる密度が０．９１
０〜０．９４０ｇ／ｃｏ＋”のエチレンと他のα−オレ
フィンとの共重合体で、その構造が線状の直鎖に短分岐
をもったものを意味し、特にα−オレフィンとしてプロ
ピレン、ブテン、ペンテン、ヘキセン、ヘプテン、オク
テン、４−メチル−１−ペンテン等の炭素数Ｃ３〜ｃａ
、のα−オレフィンを１０モル％未満程度、好しくは４
〜９モル％共重合させたものをいう。The linear low-density polyethylene (hereinafter referred to as L-LDPE) used in the inner and outer layers of the present invention has a density of 0.91 that can be obtained by medium pressure, low pressure, or in some cases high pressure method.
A copolymer of ethylene and other α-olefins with a concentration of 0 to 0.940 g/co+”, whose structure is a linear straight chain with short branches. , pentene, hexene, heptene, octene, 4-methyl-1-pentene, etc. carbon number C3 ~ ca
, about less than 10 mol% of α-olefin, preferably 4
~9 mol% copolymerized.
ＪＩＳ Ｋ６７６０によるメルトフローレート（以下Ｍ
Ｐ’１１という）は、０．１〜１０ｇ／１０ｍ１ｎ、好
しくは０．２〜５ｇ／１０ｍ１ｎのものである。また、
その曲げ弾性率は２０００〜７０００Ｋｇ／ｃｍ’であ
る。Melt flow rate according to JIS K6760 (hereinafter M
P'11) is from 0.1 to 10 g/10 m1n, preferably from 0.2 to 5 g/10 m1n. Also,
Its bending modulus is 2000-7000 Kg/cm'.
また、本発明の中間層に配した線状低密度ポリエチレン
（以下ＬＯＷ−ＬＤＰＥという）とは、中圧、低圧又は
場合によっては高圧法でも得られる密度かをもったもの
を意味し、特にα−オレフィンとしてプロピレン、ブテ
ン、ペンテン、ヘキセン、ヘプテン、オクテン、４−メ
チル−１−ペンテン等の炭素数Ｃ８〜Ｃａ２のα−オレ
フィン、とりわけこの中でもブテンと１０〜２０モル％
共重合させたものをいう。Furthermore, the linear low-density polyethylene (hereinafter referred to as LOW-LDPE) disposed in the intermediate layer of the present invention means one having a density that can be obtained by medium pressure, low pressure, or even high pressure method in some cases, especially α - As an olefin, an α-olefin having a carbon number of C8 to Ca2 such as propylene, butene, pentene, hexene, heptene, octene, 4-methyl-1-pentene, etc., especially 10 to 20 mol% with butene.
It refers to a copolymerized product.
つまり、上記Ｌ−ＬＤＰＥに比べてα−オレフィンの短
鎖分岐が増加しているものである。このようにα−オレ
フィンの短鎖分岐が増加するに従って密度−３＝
が低下するばかりでなく、透明性が向上する。しかも、
融点は短鎖分岐が増加しても低下することがないという
特長も有するのである。ＭＦＲは０．５〜５０ｇ７１０
ｍｉｎ好しくは１〜３′ｏｇ／１０ｎｉｎのものが透明
性及び機械的強度に優れる。ＭＰＲがＱ、５ｇ７１０ｍ
１ｎ未満のものは、飛躍的な透明性の向上は期待できず
、逆に５０ｇ７１０ｍｉｎを越えると機械的強度、特に
引張強度の低下が大きい。That is, compared to the above-mentioned L-LDPE, the short chain branching of the α-olefin is increased. In this way, as the short chain branching of the α-olefin increases, not only the density −3= decreases, but also the transparency improves. Moreover,
Another feature is that the melting point does not decrease even if the number of short chain branches increases. MFR is 0.5-50g710
The min value of preferably 1 to 3'og/10 nin is excellent in transparency and mechanical strength. MPR is Q, 5g710m
If it is less than 1 n, no dramatic improvement in transparency can be expected, and on the contrary, if it exceeds 50 g and 710 min, the mechanical strength, especially the tensile strength, will be greatly reduced.
作 用
本発明は以上のように構成したので、
（１）透明性の向上
Ｌｏｔ−ＬＤＰＥは、α−オレフィンの組成比率が多く
短鎖分岐が多いので、素材自体としての透明性が高く、
これを中間層に配することにより、Ｌ−ＬＤＰＥの透明
性を改良し、飛躍的に向上させることができる。Effects Since the present invention is constructed as described above, (1) Improved transparency Lot-LDPE has a high composition ratio of α-olefin and many short chain branches, so it has high transparency as a material itself,
By disposing this in the intermediate layer, the transparency of L-LDPE can be improved and dramatically improved.
（２）耐熱性の保持
本発明のＬｏｔ−ＬＤＰＲは、上記した如＜ Ｌ−ＬＤ
ＰＲに対してその密度を低下しているにもかかわらず、
主鎖と長鎖分岐とからなる、−・わゆる高圧法低密度ポ
リエチレン（一般に１、ＤＰＥと略称されるもの）のよ
うに融点の低下がないので、Ｌ−ＬＤＰＲの耐熱性を損
なうことがない。しかも、Ｌｏｔ−ＬＤＰＥは中間層に
配されているので、１０５℃以上の高温殺菌時の高温度
が直接露されることがなく、殺菌後に収縮することがな
い。(2) Retention of heat resistance The Lot-LDPR of the present invention has the property of maintaining heat resistance as described above.
Despite reducing its density for PR,
Unlike so-called high-pressure low-density polyethylene (commonly abbreviated as 1, DPE), which consists of a main chain and long chain branches, the melting point does not decrease, so the heat resistance of L-LDPR will not be impaired. do not have. Moreover, since Lot-LDPE is placed in the middle layer, it is not directly exposed to the high temperature of 105° C. or higher during high-temperature sterilization, and does not shrink after sterilization.
（３）シール強度
本発明のプラスチック容器は、内層にＬ−ＬＤＰＥを設
けたので、フィルムを高周波シールした場合、あるいは
ブロー成形で溶融プラスチックを金型で挟んだ場合のシ
ール強度がきわめて高いのである。(3) Sealing strength Since the plastic container of the present invention has L-LDPE in the inner layer, the sealing strength is extremely high when the film is high-frequency sealed or when molten plastic is sandwiched between molds during blow molding. .
（４）柔軟性
本、発明のプラスチック容器は、中間層に密度の低いＬ
ＯＷ−ＬＤＰＲを配したので、全体的に密度が下がり、
曲げ弾性率を低下させることができるので、きわめて柔
軟性に優れる。しかも、内外層には機械的強度の大きい
Ｌ−ＬＤＰＥを配したので、機械的強度が損なわれるこ
とがないのである。(4) Flexibility The plastic container of the present invention has a low density L in the middle layer.
Since OW-LDPR is installed, the overall density is reduced,
Since the bending modulus can be lowered, it has extremely excellent flexibility. Moreover, since the inner and outer layers are made of L-LDPE with high mechanical strength, the mechanical strength is not impaired.
実 施 例 以下、実施例により本発明を具体的に説明する。Example Hereinafter, the present invention will be specifically explained with reference to Examples.
実施例１
φ４０ｍｍ単軸押出機にて密度が０．９２１ｇ／ｃｍ３
．ＭＦＲがＩＪｇ／１０ｍ１ｎ、曲げ弾性率が２７００
Ｋｇ／ａｍ”のＬ−ＬＤＰＥを加熱混練し押出頭へ送り
、他方、他のφ４０ｍｍ単軸押出機にて密度が０．９０
２ｇ／ａｎ３． ＭＰＲが１−０ｇ／１０ｎ＋ｉｎ。Example 1 Density is 0.921 g/cm3 using a φ40 mm single screw extruder
．． MFR is IJg/10m1n, flexural modulus is 2700
Kg/am'' L-LDPE was heated and kneaded and sent to the extrusion head, while another φ40mm single screw extruder was used to knead the L-LDPE to a density of 0.90.
2g/an3. MPR is 1-0g/10n+in.
曲げ弾性率が７５０Ｋｇ７ｃｍ’のＬＯＴＩ−ＬＤＰＥ
を加熱混練し同様に押出頭へ送り、この押出頭から内外
層にＬ−ＬＤＰＥ、中間層にＬＯＷ−ＬＤＰＥを配した
筒状パリスンを押出し、ブロー成形することにより、第
１図に示す輸液用プラスチック容器（以下ボトルという
）１を形成した。ボトル１は、胴部２８、口部３及び底
部４より構成され、底部４には凹溝５内に収納可能な吊
り具６を具備する。成形されたボトル１実施例２
中間層に密度が０．９０１８／ｃｍ３． ＭＦＲが５．
０ｇ／１０ｉｉｎ。LOTI-LDPE with bending modulus of 750Kg7cm'
The mixture is heated and kneaded and sent to the extrusion head in the same manner, and from this extrusion head a cylindrical parison with L-LDPE arranged in the inner and outer layers and LOW-LDPE arranged in the middle layer is extruded and blow molded to produce the infusion solution shown in Fig. 1. A plastic container (hereinafter referred to as a bottle) 1 was formed. The bottle 1 is composed of a body part 28, a mouth part 3, and a bottom part 4, and the bottom part 4 is equipped with a hanger 6 that can be stored in a groove 5. Molded bottle 1 Example 2 The middle layer has a density of 0.9018/cm3. MFR is 5.
0g/10in.
曲げ弾性率７５０Ｋｇ／ｃｍ３の午−ＬＤＰＥを配した
以外実施例１と同様にボトルを成形した。A bottle was molded in the same manner as in Example 1 except that LDPE with a bending modulus of elasticity of 750 kg/cm3 was used.
実施例３
内層と外層に密度が０．９３５ｇ／ｃ＋ｎ３． ＭＦＲ
が１ 、５ｇ７１０ｍ１ｎ、曲げ弾性率が５０００Ｋｇ
／ｃｍ’を配した以外実施例１と同様にボトルを成形し
た。Example 3 The inner layer and outer layer have a density of 0.935 g/c+n3. MFR
is 1, 5g710m1n, bending elastic modulus is 5000Kg
A bottle was molded in the same manner as in Example 1 except that /cm' was arranged.
実施例４
内層と外層の肉厚をそれぞれ７５μとし、中間層の肉厚
を１００μ とした以外実施例１と同様にボトルを成形
した。Example 4 A bottle was molded in the same manner as in Example 1, except that the inner and outer layers each had a thickness of 75 μm, and the middle layer had a thickness of 100 μm.
比較例
φ５０ｍｍ単軸押出機にて実施例１で使用したＬ一定し
た。なお、透明性の試験は、ＪＩＳ Ｋ６７１４に従い
全光線透過率を測定した。この試験は、１０５℃、２０
分の水蒸気の殺菌においても行った。その結果を表１に
示す。Comparative Example L used in Example 1 was kept constant using a single screw extruder with a diameter of 50 mm. In the transparency test, total light transmittance was measured according to JIS K6714. This test was carried out at 105°C, 20
It was also used for steam sterilization. The results are shown in Table 1.
表 １
表１に示すように、実施例１〜４は、全光線透過率が９
０％以上となり、きわめて透過率が良いことがわかった
。一方、比較例は、全光線透過率が８３％で透明性が不
充分であった。Table 1 As shown in Table 1, Examples 1 to 4 had a total light transmittance of 9.
It was found that the transmittance was 0% or more, and the transmittance was extremely good. On the other hand, the comparative example had a total light transmittance of 83% and had insufficient transparency.
また、実施例２から明らかなように、中間層のＬｏｔ−
ＬＤＰＥのＭＦＲを高くすると透明性がさらに向上する
ことがわかった。これはＬＯＷ−ＬＤＰＨの流れ特性が
良くなるためと予想される。Furthermore, as is clear from Example 2, the Lot-
It has been found that increasing the MFR of LDPE further improves transparency. This is expected to be due to improved flow characteristics of LOW-LDPH.
さらに、実施例４かられかるように、Ｌｏｔ−ＬＤＰＨ
の肉厚は比率が小さくなると透明性の低下をきたすが、
この場合少なくとも全肉厚の３０％以上の肉厚が必要で
ある。Furthermore, as seen from Example 4, Lot-LDPH
As the wall thickness ratio decreases, transparency decreases,
In this case, the thickness must be at least 30% of the total thickness.
また、内層１１．外層１２と中間層１３との密度の差は
少なくともＯ，Ｏ１ｇ／ｃ＋ｎ３程度必要であることが
わかる。In addition, the inner layer 11. It can be seen that the difference in density between the outer layer 12 and the intermediate layer 13 is required to be at least about O, O1g/c+n3.
発明の効果
本発明のプラスチック容器は、以上のように構成したの
で、食品及び医薬品を内部に収容した際に、内部が充分
に見えるだけの透明性を有するとともに、１０５℃以上
の高温殺菌の温度１こ耐える耐熱性を有し、さらには充
分なシール強度を有するものである。Effects of the Invention Since the plastic container of the present invention is configured as described above, it is transparent enough to see the inside when food and medicine are stored inside, and can be sterilized at a high temperature of 105°C or higher. It has a heat resistance that can withstand 1 hour and also has sufficient sealing strength.
第１図は本発明のプラスチック容器の実施例にかかる輸
液用プラスチック容器の全体斜視図、第２図は第１図の
輸液用プラスチック容器の胴部の要部破断断面図である
。FIG. 1 is an overall perspective view of a plastic container for infusion according to an embodiment of the plastic container of the present invention, and FIG. 2 is a sectional view of a main part of the body of the plastic container for infusion shown in FIG.
Claims (1)
密度ポリエチレンより構成されたプラスチック容器にお
いて、内層及び外層には０．９１０〜０．９４０ｇ／ｃ
ｍ＾３の線状低密度ポリエチレンを配し、中間層には０
．８８０〜０．９０５ｇ／ｃｍ＾３の線状低密度ポリエ
チレンを配し、内層及び外層と中間層との間に密度の差
を少なくとも０．０１ｇ／ｃｍ＾３設けたことを特徴と
するプラスチック容器。In a plastic container made of linear low-density polyethylene made of a copolymer of ethylene and α-olefin, the inner and outer layers contain 0.910 to 0.940 g/c.
m^3 linear low density polyethylene is arranged, and the middle layer is 0
．． A plastic container comprising linear low-density polyethylene of 880 to 0.905 g/cm^3 and having a density difference of at least 0.01 g/cm^3 between the inner layer, the outer layer, and the intermediate layer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7732887A JPH0610012B2 (en) | 1987-03-30 | 1987-03-30 | Plastic container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7732887A JPH0610012B2 (en) | 1987-03-30 | 1987-03-30 | Plastic container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63248633A true JPS63248633A (en) | 1988-10-14 |
| JPH0610012B2 JPH0610012B2 (en) | 1994-02-09 |
Family
ID=13630866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7732887A Expired - Lifetime JPH0610012B2 (en) | 1987-03-30 | 1987-03-30 | Plastic container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610012B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06246886A (en) * | 1992-12-28 | 1994-09-06 | Mitsui Petrochem Ind Ltd | Resin laminate and use application thereof |
| US5403538A (en) * | 1989-11-16 | 1995-04-04 | Mitsui Petrochemical Industries, Ltd. | Container with a suspension grip and method of manufacturing the same |
| WO1995022456A1 (en) * | 1992-12-04 | 1995-08-24 | Otsuka Pharmaceutical Factory, Inc. | Multilayer film and container |
| WO2000035673A1 (en) | 1998-12-14 | 2000-06-22 | Otsuka Pharmaceutical Factory, Inc. | Multilayered film and container |
| CN1058453C (en) * | 1992-12-04 | 2000-11-15 | 株式会社大塚制药工厂 | Multilayer film and container |
| SG79175A1 (en) * | 1993-07-26 | 2001-03-20 | Otsuka Pharma Co Ltd | Multilayer film and container |
| US6306473B1 (en) | 1997-07-17 | 2001-10-23 | Otsuka Pharmaceutical Factory Inc. | Multilayer film and container |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892535A (en) * | 1981-11-30 | 1983-06-01 | Toyo Seikan Kaisha Ltd | Plastic bottle |
| JPS61132345A (en) * | 1984-12-03 | 1986-06-19 | 日本石油化学株式会社 | Adhesive resin and laminate thereof |
| JPS6242842A (en) * | 1985-08-21 | 1987-02-24 | 凸版印刷株式会社 | Multilayer vessel |
| JPS6264363A (en) * | 1985-09-17 | 1987-03-23 | 昭和電工株式会社 | Medical bag |
-
1987
- 1987-03-30 JP JP7732887A patent/JPH0610012B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892535A (en) * | 1981-11-30 | 1983-06-01 | Toyo Seikan Kaisha Ltd | Plastic bottle |
| JPS61132345A (en) * | 1984-12-03 | 1986-06-19 | 日本石油化学株式会社 | Adhesive resin and laminate thereof |
| JPS6242842A (en) * | 1985-08-21 | 1987-02-24 | 凸版印刷株式会社 | Multilayer vessel |
| JPS6264363A (en) * | 1985-09-17 | 1987-03-23 | 昭和電工株式会社 | Medical bag |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5403538A (en) * | 1989-11-16 | 1995-04-04 | Mitsui Petrochemical Industries, Ltd. | Container with a suspension grip and method of manufacturing the same |
| WO1995022456A1 (en) * | 1992-12-04 | 1995-08-24 | Otsuka Pharmaceutical Factory, Inc. | Multilayer film and container |
| CN1058453C (en) * | 1992-12-04 | 2000-11-15 | 株式会社大塚制药工厂 | Multilayer film and container |
| JPH06246886A (en) * | 1992-12-28 | 1994-09-06 | Mitsui Petrochem Ind Ltd | Resin laminate and use application thereof |
| SG79175A1 (en) * | 1993-07-26 | 2001-03-20 | Otsuka Pharma Co Ltd | Multilayer film and container |
| US6306473B1 (en) | 1997-07-17 | 2001-10-23 | Otsuka Pharmaceutical Factory Inc. | Multilayer film and container |
| WO2000035673A1 (en) | 1998-12-14 | 2000-06-22 | Otsuka Pharmaceutical Factory, Inc. | Multilayered film and container |
| US6905744B1 (en) | 1998-12-14 | 2005-06-14 | Otsuka Pharmaceutical Factory, Inc. | Multilayered film and container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610012B2 (en) | 1994-02-09 |
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