JPS6047298B2 - Packaging containers for heat sterilization - Google Patents
Packaging containers for heat sterilizationInfo
- Publication number
- JPS6047298B2 JPS6047298B2 JP51159550A JP15955076A JPS6047298B2 JP S6047298 B2 JPS6047298 B2 JP S6047298B2 JP 51159550 A JP51159550 A JP 51159550A JP 15955076 A JP15955076 A JP 15955076A JP S6047298 B2 JPS6047298 B2 JP S6047298B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- mica
- heat sterilization
- ethylene
- block 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.)
- Expired
Links
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- Containers Having Bodies Formed In One Piece (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 本発明は加熱殺菌用包装容器に関するものである。[Detailed description of the invention] The present invention relates to a packaging container for heat sterilization.
更に詳しく言えば剛性、耐衝撃性、耐熱性、耐寒性、加
工容易性、シール容易性の如き加熱殺菌用包装容器とし
て使用するに適する諸特性および特に酸素の透過を十分
防止し得る特性を有する加熱殺菌用包装容器に関するも
のである。本発明において加熱殺菌用包装容器とは内容
物を充填し口部を密封して高温高圧の温熱殺菌を施すこ
とを目的とした包装容器を言うものとする。More specifically, it has various properties suitable for use as a packaging container for heat sterilization, such as rigidity, impact resistance, heat resistance, cold resistance, ease of processing, and ease of sealing, and in particular, properties that can sufficiently prevent the permeation of oxygen. This invention relates to a packaging container for heat sterilization. In the present invention, a packaging container for heat sterilization refers to a packaging container that is intended to be filled with contents, sealed at the mouth, and subjected to thermal sterilization at high temperature and pressure.
従来、ポリプロピレンが耐熱性、透明性、無害性、耐薬
品性などの諸特性に優れた点を持つていることからこれ
を食料品用包装容器、医療用包装容器などに使用するこ
とが行われている。しカルながら、ポリプロピレンは酸
素の透過を遮断する性質に欠けているため、ポリプロピ
レン製容器は酸素との接触によつて品質の低下を起し易
い食料品、医療品などの包装容器としては不適当である
。Conventionally, polypropylene has been used for food packaging containers, medical packaging containers, etc. because it has excellent properties such as heat resistance, transparency, non-toxicity, and chemical resistance. ing. However, polypropylene lacks the property of blocking oxygen permeation, making polypropylene containers unsuitable for packaging foods, medical products, etc. whose quality is likely to deteriorate due to contact with oxygen. It is.
従来、ポリプロピレンと炭化水素ゴム状弾性体と雲母の
３成分の特定の数量的配合条件を具備する混和物からな
る改善された機械的性質を持つ重合体組成物が提案され
ているが、酸素の透過の防止性については何等触れてい
ない。Previously, polymer compositions with improved mechanical properties consisting of blends of the three components polypropylene, hydrocarbon rubber-like elastomer, and mica with specific quantitative formulation conditions have been proposed. There is no mention of the prevention of permeation.
さらにまた、ポリプロピレンに高純度のセリサイト （
絹雲母）を添加することによりポリプロピレンの耐熱性
、耐候性および耐薬品性を増大させることが提案されて
いるけれども酸素の透過を十分満足に防止し得ることに
成功するに至つていない。Furthermore, we added high-purity sericite (
Although it has been proposed to increase the heat resistance, weather resistance and chemical resistance of polypropylene by adding sericite, it has not been possible to sufficiently prevent the permeation of oxygen.
本発明においては、剛性、耐衝撃性、耐熱性、耐寒耐、
加工容易性、シール容易性などの加熱殺菌用包装容器と
して使用するに適する諸特性を保有すると共に特に酸素
の透過を十分満足に防止し得る性質を保有するポリプロ
ピレンを基礎とする加熱殺菌用包装容器を得ることにつ
いて種々研究した結果、結晶性プロピレン単独重合体の
ほかにエチレン−プロピレンブロック共重合体と雲母と
を併用してなる複合物を使用することによりその目的を
達成することに成功したものてある。In the present invention, rigidity, impact resistance, heat resistance, cold resistance,
A packaging container for heat sterilization based on polypropylene that has various properties suitable for use as a packaging container for heat sterilization, such as ease of processing and ease of sealing, and in particular, properties that can sufficiently prevent the permeation of oxygen. As a result of various studies on how to achieve this goal, we succeeded in achieving this goal by using a composite made of a combination of crystalline propylene homopolymer, ethylene-propylene block copolymer, and mica. There is.
本発明は結晶性プロピレン単独重合体とエチレノンープ
ロピレンブロツク共重ね体と雲母とからなる複合物で作
られたことを特徴とする加熱殺菌用包装容器である。本
発明において使用する結晶性プロピレン単独重合体はア
イソタクチック・インデックスの高い５アイソタクチッ
ク・ポリプロピレンを使用するものてあり、例えは分子
量２５０、０００〜４００、０００）メルト・フロー・
イ、ンデツクス０．５〜７、ピカツト軟化点１４５〜１
５５℃、熱変形温度１１２〜１２０■的性質を有するも
のが好ましい。The present invention is a packaging container for heat sterilization characterized by being made of a composite consisting of a crystalline propylene homopolymer, an ethyleneone-propylene block copolymer, and mica. The crystalline propylene homopolymer used in the present invention is a 5 isotactic polypropylene with a high isotactic index, such as a melt flow polypropylene with a molecular weight of 250,000 to 400,000.
A, Index 0.5-7, Picato softening point 145-1
It is preferable to have a heat distortion temperature of 55° C. and a heat distortion temperature of 112 to 120° C.
つぎに、本発明において使用するエチレン−プロピレン
ブロック共重合体としては、例えばエチレン含量２〜１
５重量％、メルト・フロー・インデックス１０〜８、ピ
カツト軟化点１３０〜１４５デＣ１熱変形温度１０５〜
１１５℃、脆化温度−５〜−３０℃などの物理的性質を
有するものが好ましい。さらに、本発明において使用す
る雲母としては、白雲母、紅雲母、ソーダ雲母、絹雲母
（セリサイト）、バナジン雲母およびイライトの如き白
雲母系の雲母および黒雲母、キン雲母、テツ雲母および
チンワルド雲母の如き黒雲母系の雲母を使用することが
できる。Next, the ethylene-propylene block copolymer used in the present invention has an ethylene content of 2 to 1, for example.
5% by weight, melt flow index 10~8, Picato softening point 130~145, C1 heat distortion temperature 105~
Those having physical properties such as 115°C and a embrittlement temperature of -5 to -30°C are preferred. Furthermore, the micas used in the present invention include muscovite-based mica such as muscovite, rhodochite, soda mica, sericite, vanadium mica, and illite, and muscovite-based mica such as muscovite, rhodochite, tetu mica, and chinwald mica. A biotite type mica such as the following can be used.
本発明において、雲母は高純度のものわ好ましく、その
純度が高いほど酸素の透過を遮断し得る効果が大きく、
平均粒子径１００〜３２５μを有するものを使用するの
が好ましい。In the present invention, mica with high purity is preferable, and the higher the purity, the greater the effect of blocking oxygen permeation.
It is preferable to use particles having an average particle diameter of 100 to 325μ.
本発明の加熱殺菌用包装容器を構成する複合物は上記の
如く３成分からなるがその組成は結晶性；プロピレン単
独重合体１０〜９０重量％、特に好ましくは３０〜５０
重量％：エチレンープロピレンプロツク共重合体１０〜
８０重量％、特に好ましくは２０〜４０重量％；および
雲母１０〜５呼量％、特に好ましくは２０〜４０重量％
である。The composite constituting the packaging container for heat sterilization of the present invention is composed of three components as described above, and its composition is crystalline; propylene homopolymer 10 to 90% by weight, particularly preferably 30 to 50% by weight.
Weight%: ethylene-propylene block copolymer 10~
80% by weight, particularly preferably 20-40% by weight; and 10-5% by weight of mica, particularly preferably 20-40% by weight
It is.
該複合物において、結晶２性プロピレン単独重合体が１
０重量％より少い場合には耐酸素透過度、熱変形温度、
およびピカツト軟化点の低下という欠点があり；エチレ
ン−プロピレンブロック共重合体が１唾量％より少い場
合には耐衝撃強度の低下という欠点があり８０重量％３
以上になると耐酸素透過度の低下という欠点があり、雲
母が１０重量％より少い場合には耐酸素透過性を付与す
る効果が低下するという欠点があり、５０重量％より多
い場合には耐衝撃強度が低下するという欠点がある。な
お、雲母の添加量が１唾量３％から５０重量％の間にお
いては耐酸素透過度は重量％の増加に伴なつて向上する
。本発明の加熱殺菌用包装容器を構成する複合物は結晶
性ポリプロピレンとエチレン−プロピレンブロック共重
合体と雲母との３成分をヘンシルミ４，キサーによりブ
レンドした混合材料を１６０〜２４０℃の加熱条件下で
ベント式押出機にて混合溶融し、次いでペレット化する
ことによつてつくることが出来る。In the composite, the crystalline dipropylene homopolymer has 1
If it is less than 0% by weight, oxygen permeability, heat distortion temperature,
There is a drawback that the ethylene-propylene block copolymer content is less than 1% by weight, and the impact resistance strength is reduced by 80% by weight3.
If the mica content is less than 10% by weight, the effect of imparting oxygen permeation resistance is reduced, and if it is more than 50% by weight, the resistance to oxygen permeation is reduced. The disadvantage is that impact strength is reduced. Note that, when the amount of mica added is between 3% and 50% by weight per volume, the oxygen permeability improves as the weight% increases. The composite material constituting the packaging container for heat sterilization of the present invention is a mixed material obtained by blending three components of crystalline polypropylene, ethylene-propylene block copolymer, and mica using Henshirumi 4 and Kisser under heating conditions of 160 to 240°C. It can be produced by mixing and melting in a vented extruder and then pelletizing.
本発明において、加熱殺菌用包装容器を上記の複合物か
ら製造するには、容器の楊合には射出成形方式、中空成
形方式の如き装置で１６０〜２４０℃の温度にて成型す
ることによつて製造することができ、またフィルムシー
トの場合にはインフレーシヨン押出し方式、カレンダー
押出し方式、Ｔ−ダイ押出し方式の如き装置を使用して
１６０〜２４０゜Ｃの温度で押出成型することによつて
製造することができる。In the present invention, in order to manufacture a packaging container for heat sterilization from the above-mentioned composite, the container is molded at a temperature of 160 to 240°C using an injection molding method or a blow molding method. In the case of film sheets, extrusion molding can be carried out at a temperature of 160 to 240°C using equipment such as inflation extrusion, calendar extrusion, or T-die extrusion. It can be manufactured by
本発明において複合物は前述の３種の成分からなること
を必須要件とするが、このほかにポリブデン系の材料を
附加することによつて雲母とポリプロピレンの練込の際
の相溶性を良くし衝撃強度の向上を計ることができる。In the present invention, it is essential for the composite to consist of the three components mentioned above, but by adding a polybdenum-based material in addition to these, the compatibility of mica and polypropylene can be improved during kneading. Improved impact strength can be measured.
つぎに本発明において加熱殺菌用包装容器を構成する複
合物は前記の３種の成分からなることを必要とすること
について比較試験およびその結果を示してこれを明らか
にする。比較試験および結果
（１）実験方法
つぎの６種の試料を準備する。Next, the fact that the composite material constituting the packaging container for heat sterilization in the present invention is required to consist of the above-mentioned three components will be clarified by showing comparative tests and their results. Comparative test and results (1) Experimental method The following six types of samples were prepared.
１結晶性プロピレン単独重合体
２ エチレン−プロピレンブロック共重合体３結晶性プ
ロピレン単重合体５０重量％とＣＯＰＰ５呼量％からな
る混合物
４結晶性プロピレン単独重合体７０重量％と３２５メッ
シュの絹雲母３０重量％とからなる複合物５ エチレン
−プロピレンブロック共重合体７０重量％と３２５メッ
シュの絹雲母３呼量％とからなる複合物６結晶性プロピ
レン単独重合体３５重量％とエチレンープロピレンブ七
ツク共重合体３５重量％と３２５メッシュの絹雲母３０
重量％からなる複合物上記の６種の試験についてダート
インパクト値、ピカツト軟化点および酸素透過率を下記
の試験方法により測定した。1 Crystalline propylene homopolymer 2 Ethylene-propylene block copolymer 3 Mixture consisting of 50% by weight of crystalline propylene homopolymer and 5% by weight of COPP 4 70% by weight of crystalline propylene homopolymer and 325 mesh sericite 30 Composite 5 consisting of 70% by weight of ethylene-propylene block copolymer and 3% by weight of 325 mesh sericite Composite 6 Compound 6 consisting of 35% by weight of crystalline propylene homopolymer and ethylene-propylene block copolymer 35% by weight copolymer and 325 mesh sericite 30
The dart impact value, Picato softening point and oxygen permeability of the six types of tests mentioned above were measured using the following test methods.
（イ）ダートインパクト値測定試験
この試験はＡＳＴＭ−Ｄ−１７０９（６０インチより
の高さ）により行つた。(a) Dirt impact value measurement test This test was conducted in accordance with ASTM-D-1709 (height greater than 60 inches).
その単位はｙで示す。（ロ）ピカツト軟化点測定試験 この試験はＡＳＴＭ−Ｄ−１５２５により行つた。Its unit is indicated by y. (b) Pikatuto softening point measurement test This test was conducted according to ASTM-D-1525.
その単位は℃で示す。（ハ）酸素透過率測定試験 この試験はＡＳＴＭ−Ｄ−１４３４により行つた。The unit is expressed in °C. (c) Oxygen permeability measurement test This test was conducted according to ASTM-D-1434.
その単位はＣｃ／０．ＩＴＩ＄ｔ／Ｒｌｌ／日で示す。
（２）試験結果上記の６種の試料について上記の測定試
験を行つた結果を次表に示す。Its unit is Cc/0. Expressed in ITI$t/Rll/day.
(2) Test results The results of the above measurement tests performed on the above six types of samples are shown in the following table.
この表の結果からつぎのことが認められる。The following is recognized from the results in this table.
結晶性プロピレン単独重合体およびエチレン−プロピレ
ンブロック共重合体にそれぞれ雲母を混合した場合、結
晶性プロピレン単独重合体−単独、エチレン−プロピレ
ンブロック共重合体単独の場合よりも酸素透過率は低下
し、ガスバリヤー性は大幅に改良されるが結晶性プロピ
レン単独重合体、エチレン−プロピレンブロック共重合
体および雲母の３者を混合した場合、酸素透過率は更に
低下し、ガスバリヤー性は更に改良される。一方、結晶
性プロピレン単独重合体に雲母を混合した場合、結晶性
プロピレン単独重合体単独の場合よりもダートインパク
ト値は低下し、したがつて耐衝撃性は悪くなるが、結晶
性プロピレン単独重合体と雲母の２成分に更にエチレン
−プロピレンブロック共重合体を加えることによつてダ
ートインパクト値は結晶性プロピレン単独重合体と雲母
の２成分の場合よりも高くなる。When mica is mixed into a crystalline propylene homopolymer and an ethylene-propylene block copolymer, the oxygen permeability is lower than when using the crystalline propylene homopolymer alone or the ethylene-propylene block copolymer alone, Gas barrier properties are greatly improved, but when the three materials, crystalline propylene homopolymer, ethylene-propylene block copolymer, and mica are mixed, the oxygen permeability further decreases and gas barrier properties are further improved. . On the other hand, when mica is mixed with crystalline propylene homopolymer, the dart impact value is lower than that of crystalline propylene homopolymer alone, and the impact resistance is therefore worse; By further adding an ethylene-propylene block copolymer to the two components of crystalline propylene homopolymer and mica, the dart impact value becomes higher than that of the two components of crystalline propylene homopolymer and mica.
結晶性プロピレン単独重合体とエチレン−プロピレンブ
ロック共重合体と雲母との３成分により加熱殺菌処理に
耐え得る耐衝撃性を具備したものが構成される。また、
雲母の添加によるピカツト軟化点の低下は、さほど見ら
れず結晶性プロピレン単独重合体とエチレン−プロピレ
ンブロック共重合体と雲母との３成分よりなる複合組成
物は加熱殺菌処理に充分に耐え得る耐熱性を備えている
。The three components of crystalline propylene homopolymer, ethylene-propylene block copolymer, and mica constitute a material having impact resistance that can withstand heat sterilization treatment. Also,
The addition of mica did not significantly reduce the Picatuto softening point, and the composite composition consisting of the three components of crystalline propylene homopolymer, ethylene-propylene block copolymer, and mica was heat resistant enough to withstand heat sterilization. It has sex.
したがつて、本発明においてはガスバリヤー性に優れか
つ耐衝撃性、ならびに耐熱性を備えていることを特色と
する加熱殺菌用包装容器を得ることができる。つぎに本
発明を実施例を挙げて具体的に説明する。市販の結晶性
プロピレン密度０．９０，Ｍ．Ｉ＝１．０と市販のエチ
レン−プロピレンブロック共重合体密度０．９０，Ｍ．
Ｉ＝１．５と３２５メッシュの絹雲母を３５：３５：３
０の重量％比て混合し均一に分散するように混練し、つ
いて混練したものをペレタイズ化した。Therefore, in the present invention, it is possible to obtain a packaging container for heat sterilization that is characterized by excellent gas barrier properties, impact resistance, and heat resistance. Next, the present invention will be specifically explained with reference to Examples. Commercially available crystalline propylene density 0.90, M. I=1.0 and commercially available ethylene-propylene block copolymer density 0.90, M.I.
I = 1.5 and 325 mesh sericite 35:35:3
The mixture was mixed at a weight percentage of 0, kneaded to uniformly disperse, and the kneaded mixture was pelletized.
次いでこのペレタイズ化された複合物をシートとした。
そしてこのシートを真空成形して加熱殺菌用包装容器を
得た。この製品のダートインパクト値は７００ｙであり
ピカツト軟化点は１４５℃であり、酸素透過率は１００
ＣＣ／０．１ＴＷＬ／ｄ／日てあつた。This pelletized composite was then made into a sheet.
This sheet was then vacuum formed to obtain a packaging container for heat sterilization. The dart impact value of this product is 700y, the picato softening point is 145℃, and the oxygen permeability is 100y.
CC/0.1TWL/d/day was heated.
Claims (1)
チレン−プロピレンブロック共重合体１０〜８０重量％
と雲母１０〜５０重量％とからなる複合物で作られたこ
とを特徴とする加熱殺菌用包装容器。1 10-90% by weight of crystalline propylene homopolymer and 10-80% by weight of ethylene-propylene block copolymer
A packaging container for heat sterilization, characterized in that it is made of a composite consisting of 10% to 50% by weight of mica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51159550A JPS6047298B2 (en) | 1976-12-30 | 1976-12-30 | Packaging containers for heat sterilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51159550A JPS6047298B2 (en) | 1976-12-30 | 1976-12-30 | Packaging containers for heat sterilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5384044A JPS5384044A (en) | 1978-07-25 |
| JPS6047298B2 true JPS6047298B2 (en) | 1985-10-21 |
Family
ID=15696184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51159550A Expired JPS6047298B2 (en) | 1976-12-30 | 1976-12-30 | Packaging containers for heat sterilization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047298B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235707A (en) * | 1996-10-18 | 1998-09-08 | Fort James Corp | Disposable container that is microwaveable and food contact compatible |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59172540A (en) * | 1983-03-22 | 1984-09-29 | Toyota Motor Corp | Polypropylene resin composition |
| JPS60202144A (en) * | 1984-03-27 | 1985-10-12 | Sumitomo Chem Co Ltd | Polypropylene resin composition |
| JPH072865B2 (en) * | 1984-12-17 | 1995-01-18 | 株式会社ブリヂストン | Rubber material for tennis balls |
| JPH064733B2 (en) * | 1986-02-03 | 1994-01-19 | 日本石油化学株式会社 | Highly rigid and impact resistant polyolefin resin composition |
| JP2002500606A (en) | 1998-03-20 | 2002-01-08 | フォート ジェイムズ コーポレイション | Disposable container capable of microwave treatment and method for manufacturing the container |
| US6211501B1 (en) | 1998-03-20 | 2001-04-03 | Fort James Corporation | Thermoformed polypropylene mineral-filled microwaveable containers having food contact compatible olfactory properties and process for their manufacture |
| US6627278B1 (en) | 1998-11-30 | 2003-09-30 | Fort James Corporation | Injection blow-molded disposable tumbler and method of making same |
| US6866905B1 (en) | 1998-11-30 | 2005-03-15 | Fort James Corporation | Injection blow-molded disposable tumbler and method of making same |
| US6474497B1 (en) | 1999-07-02 | 2002-11-05 | Fort James Corporation | Smooth profiled food service articles |
| US6733852B2 (en) | 2000-08-04 | 2004-05-11 | Georgia-Pacific Corporation | Disposable serving plate with sidewall-engaged sealing cover |
| US7955671B2 (en) | 2000-08-04 | 2011-06-07 | Dixie Consumer Products Llc | Crush-resistant disposable lid and containers utilizing same |
| US6881937B2 (en) | 2002-03-22 | 2005-04-19 | Fort James Corporation | Thermoformed food containers with enhanced rigidity |
| US7306836B2 (en) | 2002-04-05 | 2007-12-11 | Dixie Consumer Products Llc | Black food containers |
| JP2017114539A (en) * | 2015-12-25 | 2017-06-29 | 羽立化工株式会社 | Thermoplastic resin container and method for producing the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA945305A (en) * | 1970-04-20 | 1974-04-16 | Frederick W. Schneble (Jr.) | Electroless silver plating |
| JPS5239066B2 (en) * | 1971-09-03 | 1977-10-03 | ||
| JPS4948860A (en) * | 1972-09-20 | 1974-05-11 |
-
1976
- 1976-12-30 JP JP51159550A patent/JPS6047298B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235707A (en) * | 1996-10-18 | 1998-09-08 | Fort James Corp | Disposable container that is microwaveable and food contact compatible |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5384044A (en) | 1978-07-25 |
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