JP2000273251A - Polypropylene-based sheet - Google Patents
Polypropylene-based sheetInfo
- Publication number
- JP2000273251A JP2000273251A JP11077835A JP7783599A JP2000273251A JP 2000273251 A JP2000273251 A JP 2000273251A JP 11077835 A JP11077835 A JP 11077835A JP 7783599 A JP7783599 A JP 7783599A JP 2000273251 A JP2000273251 A JP 2000273251A
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene
- sheet
- melting point
- resin
- 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
- -1 Polypropylene Polymers 0.000 title claims abstract description 65
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 63
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 61
- 238000002844 melting Methods 0.000 claims abstract description 21
- 230000008018 melting Effects 0.000 claims abstract description 21
- 229920001400 block copolymer Polymers 0.000 claims abstract description 10
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 9
- 229920006127 amorphous resin Polymers 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 abstract description 17
- 238000002156 mixing Methods 0.000 abstract description 3
- 229920005673 polypropylene based resin Polymers 0.000 abstract description 3
- 229920006038 crystalline resin Polymers 0.000 description 9
- 238000003856 thermoforming Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920001519 homopolymer Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229920001893 acrylonitrile styrene Polymers 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 101000718497 Homo sapiens Protein AF-10 Proteins 0.000 description 1
- 102100026286 Protein AF-10 Human genes 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000009512 pharmaceutical packaging Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、押出成形などの一
般のシーティング方法で成形可能なポリプロピレン系シ
ートに関する。詳しくは、防湿性が要求されるＰＴＰと
称する医薬品(固形剤)包装用ポリプロピレン系シートに
関する。The present invention relates to a polypropylene sheet which can be formed by a general sheeting method such as extrusion. More specifically, the present invention relates to a polypropylene-based sheet for packaging a drug (solid agent) called PTP, which is required to have moisture-proof properties.
【０００２】[0002]
【従来の技術】医薬品包装において、より高い防湿性を
得るためポリプロピレン系シートが使用されている。し
かしながら、ポリプロピレンは熱成形性が極めて悪いと
いう工業上大きな問題がある。すなわち、ポリプロピレ
ンは熱成形における予熱の際、熱によるドローダウンが
大きく、良好な成形品を得ることのできる最適な成形温
度幅が２〜３℃程度であり非常に狭い。このため、ポリ
プロピレンの熱成形にあたっては、非常に高度な温度制
御が必要であり、従来の汎用成形機では成形不良率が高
く工程管理は極めて困難である。また、ポリプロピレン
は熱成形後の冷却過程において収縮するため、連続成形
において、成形部と金型部とがずれる（いわゆるピッチ
ずれ）などの問題もある。このピッチずれは、特に、一
旦成形を中止した後、成形を再開する場合に多発するこ
とが知られており、ポリプロピレン系シートを成形加工
する場合の大きな欠点の一つとなっている。2. Description of the Related Art In pharmaceutical packaging, polypropylene-based sheets are used in order to obtain higher moisture resistance. However, polypropylene has a serious industrial problem that the thermoformability is extremely poor. That is, polypropylene has a large drawdown due to heat at the time of preheating in thermoforming, and the optimum molding temperature width at which a good molded product can be obtained is about 2 to 3 ° C., which is very narrow. For this reason, in thermoforming polypropylene, very high temperature control is required, and the conventional general-purpose molding machine has a high molding defect rate and is extremely difficult to control the process. In addition, since polypropylene shrinks during the cooling process after thermoforming, there is also a problem that the molded portion and the mold portion are displaced (so-called pitch shift) in continuous molding. It is known that such a pitch shift frequently occurs particularly when molding is once stopped and then resumed, which is one of the major drawbacks when molding a polypropylene sheet.
【０００３】熱成形性の良好なポリプロピレンについて
の検討はこれまで種々なされており、例えば、ポリプロ
ピレンに比較的成形性の良好なポリエチレンやエチレン
−プロピレン共重合体、無機フィラーあるいは低分子量
の石油樹脂をブレンドして改質することについての提案
がある。例えば、溶融時に高粘度のポリプロピレンに、
高粘度のポリエチレン(低密度ポリエチレン)及び含水ケ
イ酸マグネシウム粉末を添加する方法(特公昭５６−１
５７４４号公報)、ポリプロピレンに、ポリエチレン(高
密度ポリエチレン)及びエチレン−プロピレン共重合体
を添加する方法(特公昭６３−２９７０４号公報)、ポリ
プロピレンと分子量分布の狭いポリエチレンを使用し、
成形加工性・耐振動疲労性を改良する方法(特公昭６３
−５３２１３号公報)、ポリプロピレンに石油樹脂及び
エチレン−α−オレフィン共重合体を添加する方法(特
公平６−８９１９１号公報)などが知られている。しか
しながら、これらは各々特定の温度条件におけるシート
軟化緊張保持時間、溶融体強度、絞り加工性、ドローダ
ウン等の成形加工性の改善に対しては効果が認められる
ものの成形性改良の実質的な指標である成形可能温度幅
の拡大についてはほとんど効果がなく、現実的な成形性
の改善について未だ満足できるポリプロピレン系シート
は得られていなかった。Various studies have been made on polypropylene having good thermoformability. For example, polypropylene having relatively good moldability, such as polyethylene, ethylene-propylene copolymer, inorganic filler or petroleum resin having a low molecular weight, has been studied. There are suggestions for blending and modifying. For example, when melted into high viscosity polypropylene,
Method of adding high-viscosity polyethylene (low-density polyethylene) and hydrous magnesium silicate powder (Japanese Patent Publication No. 56-1)
No. 5744), a method of adding polyethylene (high-density polyethylene) and an ethylene-propylene copolymer to polypropylene (JP-B-63-29704), using polypropylene and polyethylene having a narrow molecular weight distribution,
Methods for improving moldability and vibration fatigue resistance (JP-B-63
No. 53213), a method of adding a petroleum resin and an ethylene-α-olefin copolymer to polypropylene (Japanese Patent Publication No. 6-89191), and the like. However, although these are effective in improving the formability such as sheet softening tension holding time, melt strength, drawing workability, and drawdown under specific temperature conditions, they are substantial indicators of formability improvement. Has little effect on the expansion of the moldable temperature range, and a polypropylene-based sheet satisfactory in practical improvement of moldability has not yet been obtained.
【０００４】一方、熱成形後の冷却過程におけるポリプ
ロピレンの収縮を改良する方法については、特定の結晶
化時間及び立体規則性を有するポリプロピレンに石油樹
脂等を添加する方法（特開平７−１５７５７３号公報）
が知られている。しかし、この方法でも、フィルムをロ
ール状に巻いたときの巻き締まりによる平面性の悪化に
対しては改善効果があるものの、連続成形時の加工安定
性にはほとんど効果がなく、ピッチずれの改善について
未だ満足できるポリプロピレン系シートは得られていな
かった。On the other hand, as a method for improving the shrinkage of polypropylene in the cooling process after thermoforming, a method of adding a petroleum resin or the like to polypropylene having a specific crystallization time and stereoregularity (JP-A-7-157573). )
It has been known. However, even with this method, although there is an improvement effect on the flatness deterioration due to tightening when the film is wound in a roll shape, there is almost no effect on the processing stability during continuous molding, and the pitch deviation is improved. Have not yet been obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、熱成形可能
な温度幅が広く、しかも連続成形において、成形部と金
型部とがずれる現象（いわゆるピッチずれ）が著しく改
良されたポリプロピレン系シートを提供することを目的
とする。DISCLOSURE OF THE INVENTION The present invention relates to a polypropylene sheet having a wide temperature range in which thermoforming is possible, and in which the phenomenon that a molded portion and a mold portion are displaced (so-called pitch shift) in continuous molding is remarkably improved. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記問題
について研究を行った結果、特定のポリプロピレンに、
ポリプロピレン系樹脂と非結晶性樹脂とのグラフト共重
合体及び／又はブロック共重合体を配合してなるポリプ
ロピレン系シートが、熱成形可能な温度幅が広く、かつ
連続成形において、成形部と金型部とがずれる現象（い
わゆるピッチずれ）が著しく改良されることを見いだし
本発明を完成させるに至った。すなわち、本発明は、示
差走査熱量計によって測定された融点の差が３〜４０℃
である２種以上のポリプロピレンに、ポリプロピレン系
樹脂と非結晶性樹脂とのグラフト共重合体及び／又はブ
ロック共重合体を配合してなるポリプロピレン系シート
である。Means for Solving the Problems The present inventors have conducted research on the above problems, and as a result, have found that a specific polypropylene
A polypropylene sheet containing a graft copolymer and / or a block copolymer of a polypropylene resin and a non-crystalline resin has a wide thermoformable temperature range, and has a molding portion and a mold in continuous molding. It has been found that the phenomenon of deviation from the part (so-called pitch deviation) is remarkably improved, and the present invention has been completed. That is, in the present invention, the difference in melting point measured by a differential scanning calorimeter is 3 to 40 ° C.
The polypropylene sheet is obtained by blending a graft copolymer and / or a block copolymer of a polypropylene resin and an amorphous resin with at least two kinds of polypropylene.
【０００７】[0007]
【発明の実施の形態】本発明に用いられるポリプロピレ
ンの種類としてはプロピレンを単独重合したホモポリマ
ー、プロピレンとエチレンやα−オレフィンとのブロッ
クコポリマー、ランダムコポリマーなどの公知のポリプ
ロピレンが挙げられる。本発明における２種以上のポリ
プロピレンは示差走査熱量計によって測定された融点
（ＪＩＳ−Ｋ−７１２１）の差においてが３〜４０℃、
さらに好ましくは５〜３５℃であることが好ましい。こ
こに示す融点差とは、２種類以上のポリプロピレンのう
ち最も融点が高いものと、最も融点が低いものの差であ
る。ポリプロピレンの融点差が３℃より小さい場合、得
られたシートの真空、圧空成形性が悪くなり好ましくな
い。ポリプロピレンの融点差が４０℃以上の場合、シー
トの外観が悪くなる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the type of polypropylene used in the present invention include known polypropylenes such as homopolymers obtained by homopolymerizing propylene, block copolymers of propylene and ethylene or α-olefin, and random copolymers. In the present invention, two or more types of polypropylene have a difference in melting point (JIS-K-7121) measured by a differential scanning calorimeter of 3 to 40 ° C,
More preferably, the temperature is preferably 5 to 35 ° C. The melting point difference shown here is the difference between the highest melting point and the lowest melting point of the two or more types of polypropylene. If the difference in melting point of the polypropylene is less than 3 ° C., the vacuum and pressure forming properties of the obtained sheet deteriorate, which is not preferable. When the melting point difference of the polypropylene is 40 ° C. or more, the appearance of the sheet deteriorates.
【０００８】シートの耐熱性が要求される分野では、組
み合わせるポリプロピレンにおいて最も融点が高いポリ
プロピレンの融点は１５０℃以上であるのが好ましく、
１５５℃以上であるのがさらに好ましい。最も融点が高
いポリプロピレンの融点が１５０℃より小さいとシート
の耐熱性が悪くなる。また、組み合わせるポリプロピレ
ンにおいて最も融点が高いポリプロピレンの含量は９５
〜５０重量％であるのが好ましく、８５〜６０重量％で
あるのがさらに好ましい。最も融点が高いポリプロピレ
ンの含量が９５重量％より大きいと、真空、圧空成形性
が悪くなり、５０重量％より小さいとシートの耐熱性が
悪くなる。組み合わせるポリプロピレンの種類に特に制
限はないが、シートに水蒸気バリア性が要求される場
合、ホモポリマーとランダムコポリマーまたはブロック
コポリマーの組み合わせが好ましく、より好ましくはホ
モポリマー同士の組み合わせである。In the field where the heat resistance of the sheet is required, the melting point of the highest melting point of the polypropylene to be combined is preferably 150 ° C. or higher,
More preferably, it is 155 ° C. or higher. If the melting point of the polypropylene having the highest melting point is lower than 150 ° C., the heat resistance of the sheet deteriorates. The content of the polypropylene having the highest melting point in the combined polypropylene is 95%.
It is preferably from 50 to 50% by weight, more preferably from 85 to 60% by weight. If the content of the polypropylene having the highest melting point is more than 95% by weight, vacuum and pressure forming properties will be poor, and if it is less than 50% by weight, the heat resistance of the sheet will be poor. The type of polypropylene to be combined is not particularly limited, but when a sheet is required to have a water vapor barrier property, a combination of a homopolymer and a random copolymer or a block copolymer is preferable, and a combination of homopolymers is more preferable.
【０００９】また、カレンダー法により本発明のポリプ
ロピレン系シートを作成する場合、使用するポリプロピ
レンは、分子量１万以下の低分子量成分が全体の５重量
％以下であるのが好まく、さらに好ましくは３重量％以
下、最も好ましくは１重量％以下である。分子量１万以
下の低分子量成分が５重量％より多いと、カレンダー加
工時に熱ロールへの粘着が起こり、得られるシートの平
滑性、外観が悪くなる。低分子量成分の割合はゲルパー
ミエーションクロマトグラフィーによって測定した微分
分子量分布曲線から求めることができる。When the polypropylene sheet of the present invention is prepared by the calendering method, it is preferable that the polypropylene used has a low molecular weight component having a molecular weight of 10,000 or less at 5% by weight or less, more preferably 3% by weight or less. Wt% or less, most preferably 1 wt% or less. If the low molecular weight component having a molecular weight of 10,000 or less is more than 5% by weight, sticking to a hot roll occurs at the time of calendering, resulting in poor smoothness and appearance of the obtained sheet. The ratio of the low molecular weight component can be determined from a differential molecular weight distribution curve measured by gel permeation chromatography.
【００１０】本発明に用いられるポリプロピレン系樹脂
と非結晶性樹脂とのグラフト共重合体及び／又はブロッ
ク共重合体において、ポリプロピレン系樹脂部にはプロ
ピレンを単独重合したホモポリマー、プロピレンとエチ
レンやα−オレフィンとのランダムコポリマーなどの公
知のポリプロピレン等が用いられ、非結晶性樹脂部に
は、ポリスチレン、アクリロニトリル−スチレン共重合
体、ポリメチルメタクリレート、ポリカーボネート等が
用いられる。具体的には、ポリプロピレンにポリスチレ
ンをグラフト共重合したもの、ポリプロピレンにアクリ
ロニトリル−スチレン共重合体をグラフト共重合したも
の、ポリプロピレンにポリメチルメタクリレートをブロ
ック共重合したものが挙げられる。ポリプロピレン系樹
脂と非結晶性樹脂とのグラフト共重合体及び／又はブロ
ック共重合体の添加量は、当該ポリプロピレン１００重
量部に対して、好ましくは３〜４０重量部であり、更に
好ましくは５〜３０重量部である。ポリプロピレン系樹
脂と非結晶性樹脂とのグラフト共重合体及び／又はブロ
ック共重合体の添加量が３重量部を下回るとピッチずれ
を改良する効果が小さくなり、４０重量部を上回るとシ
ートが白化、成形温度幅が低下するなどの問題が生じ
る。[0010] In the graft copolymer and / or block copolymer of the polypropylene resin and the non-crystalline resin used in the present invention, the polypropylene resin portion includes a homopolymer obtained by homopolymerizing propylene, propylene and ethylene or α. -Known polypropylene such as a random copolymer with olefin or the like is used, and polystyrene, acrylonitrile-styrene copolymer, polymethyl methacrylate, polycarbonate, or the like is used for the non-crystalline resin portion. Specific examples include those obtained by graft copolymerizing polystyrene with polypropylene, those obtained by graft copolymerizing acrylonitrile-styrene copolymer with polypropylene, and those obtained by block copolymerizing polymethyl methacrylate with polypropylene. The amount of the graft copolymer and / or the block copolymer of the polypropylene resin and the non-crystalline resin is preferably 3 to 40 parts by weight, more preferably 5 to 40 parts by weight, based on 100 parts by weight of the polypropylene. 30 parts by weight. When the addition amount of the graft copolymer and / or the block copolymer of the polypropylene resin and the non-crystalline resin is less than 3 parts by weight, the effect of improving the pitch shift becomes small, and when it exceeds 40 parts by weight, the sheet becomes white. This causes problems such as a decrease in the molding temperature range.
【００１１】[0011]
【実施例】以下、実施例により、本発明を詳細に説明す
る。実施例、比較例は下記に示す方法で評価を行った。 （融点の測定）ＪＩＳ−Ｋ−７１２１に従い、示差走査
型熱量計で融点を測定した。 （真空、圧空成形性）圧空方式成形機[ＦＢＰ−Ｍ２；
シーケーディ（株）製]を用いて一定圧力（５kgf/cm2）
で、熱板温度を１２０〜１６０℃の間において１℃単位
で上昇させ、得られたシートの成形性を評価した。成形
型は直径１０ｍｍ、高さ４．５ｍｍ、Ｒ１．５とした。
得られた成形品の全体厚みが均一である温度を成形可能
温度とし、その温度幅を求めた。The present invention will be described below in detail with reference to examples. Examples and comparative examples were evaluated by the following methods. (Measurement of Melting Point) The melting point was measured with a differential scanning calorimeter according to JIS-K-7121. (Vacuum, compressed air molding) Compressed air molding machine [FBP-M2;
Constant pressure (5kgf / cm 2 )
Then, the hot plate temperature was increased in 1 ° C. units between 120 and 160 ° C., and the formability of the obtained sheet was evaluated. The mold was 10 mm in diameter, 4.5 mm in height, and R1.5.
The temperature at which the entire thickness of the obtained molded article was uniform was defined as the moldable temperature, and the temperature range was determined.
【００１２】（ピッチずれの評価）圧空方式成形機[Ｆ
ＢＰ−Ｍ２；シーケーディ（株）製]を用いて一定圧力
（５kgf/cm2）で成形時にポリプロピレン系シートが収
縮してピッチずれを生じるものを×、ピッチずれしない
ものを○とした。実施例、比較例に使用したポリプロピ
レン、非結晶性樹脂を示す。ポリプロピレン系樹脂に
は、ホモＰＰ（ＰＰ−Ａ）；日本ポリケム（株）製ＥＡ
７Ａ（融点：１６４℃）、ホモＰＰ（ＰＰ−Ｂ）；日本
ポリオレフィン（株）製 ＰＣ４１０Ａ（融点：１５８
℃）、ランダムＰＰ（ＰＰ−Ｃ）；日本ポリオレフィン
（株）製 ＰＢ３２２Ｍ（融点：１４９℃）をもちい
た。ポリプロピレンと非結晶性樹脂とのグラフト共重合
体には、ＰＰ−ｇ−ＰＳ；日本油脂（株）製 モディパ
ーＡ３１００を用いた。ポリプロピレンとポリメチルメ
タクリレートのブロック共重合体には、ＰＰ−ｂ−ＰＭ
ＭＡ；クラレ（株）製 ＣＢ−ＯＭ１１を用いた。(Evaluation of pitch shift) Pneumatic molding machine [F
BP-M2; manufactured by CK Corporation) was evaluated as x when the polypropylene sheet shrinks during molding at a constant pressure (5 kgf / cm 2 ) to cause a pitch shift, and o when the polypropylene sheet does not shift. The polypropylene and the non-crystalline resin used in Examples and Comparative Examples are shown. Homo PP (PP-A); EA manufactured by Nippon Polychem Co., Ltd.
7A (melting point: 164 ° C), Homo PP (PP-B); PC410A manufactured by Japan Polyolefin Co., Ltd. (melting point: 158)
° C), random PP (PP-C); PB322M (melting point: 149 ° C) manufactured by Japan Polyolefin Co., Ltd. was used. PP-g-PS; Modiper A3100 manufactured by NOF Corporation was used as the graft copolymer of polypropylene and the non-crystalline resin. Block copolymers of polypropylene and polymethyl methacrylate include PP-b-PM
MA: Kuraray Co., Ltd. CB-OM11 was used.
【００１３】実施例、比較例について、以下の方法でシ
ートを作製した。示差走査熱量計によって測定された融
点の差が３〜４０℃である２種以上のポリプロピレンと
ポリプロピレン系樹脂と非結晶性樹脂とのグラフト共重
合体、ポリプロピレン系樹脂と非結晶性樹脂とのブロッ
ク共重合体とをシリンダー温度２３０℃に設定した５０
ｍｍ二軸押出機にて溶融混練後、Ｔダイ法で厚さ０．３
ｍｍのシートを作製した。[0013] Sheets were prepared by the following method for Examples and Comparative Examples. Graft copolymer of two or more kinds of polypropylene, polypropylene-based resin and non-crystalline resin, difference of melting point measured by differential scanning calorimeter of 3 to 40 ° C., block of polypropylene-based resin and non-crystalline resin The copolymer and the cylinder temperature were set to 230 ° C. 50
After melt-kneading with a twin-screw extruder, the thickness is 0.3
mm sheet was prepared.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【発明の効果】本発明によれば、成形可能な温度幅が広
く、かつ連続成形において、成形部と金型部とがずれる
現象（いわゆるピッチずれ）が著しく改善されたポリプ
ロピレン系シートを提供できる。According to the present invention, it is possible to provide a polypropylene sheet having a wide moldable temperature range and a remarkably improved phenomenon (so-called pitch shift) in which a molded portion and a mold portion are displaced in continuous molding. .
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F071 AA20 AA20X AA22X AA33X AA34X AA75 AA77 AA84 AF10 AH04 BB06 BC01 4J002 BB121 BB141 BN032 BP031 GB01 GG02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F071 AA20 AA20X AA22X AA33X AA34X AA75 AA77 AA84 AF10 AH04 BB06 BC01 4J002 BB121 BB141 BN032 BP031 GB01 GG02
Claims (1)
の差が３〜４０℃である２種以上のポリプロピレンに、
ポリプロピレン系樹脂と非結晶性樹脂とのグラフト共重
合体及び／又はブロック共重合体を配合してなるポリプ
ロピレン系シート。1. A method according to claim 1, wherein two or more types of polypropylene having a difference in melting point measured by a differential scanning calorimeter of 3 to 40 ° C.
A polypropylene sheet comprising a graft copolymer and / or a block copolymer of a polypropylene resin and an amorphous resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07783599A JP4221805B2 (en) | 1999-03-23 | 1999-03-23 | Polypropylene sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07783599A JP4221805B2 (en) | 1999-03-23 | 1999-03-23 | Polypropylene sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000273251A true JP2000273251A (en) | 2000-10-03 |
| JP4221805B2 JP4221805B2 (en) | 2009-02-12 |
Family
ID=13645110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07783599A Expired - Fee Related JP4221805B2 (en) | 1999-03-23 | 1999-03-23 | Polypropylene sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4221805B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011070975A1 (en) | 2009-12-07 | 2011-06-16 | 日清紡ホールディングス株式会社 | Support for catalyst supporting, material with supported catalyst, electrode, and cell |
-
1999
- 1999-03-23 JP JP07783599A patent/JP4221805B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011070975A1 (en) | 2009-12-07 | 2011-06-16 | 日清紡ホールディングス株式会社 | Support for catalyst supporting, material with supported catalyst, electrode, and cell |
| US8993164B2 (en) | 2009-12-07 | 2015-03-31 | Nisshinbo Holdings Inc. | Support for catalyst supporting, carrier with supported catalyst, electrode, and battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4221805B2 (en) | 2009-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4567089A (en) | Thermoforming propylene polymer laminated sheet | |
| CN101395216B (en) | Polypropylene resin composition and molded articles, sheet or container therefrom | |
| US6288168B1 (en) | Propylene based resin composition | |
| US6512050B2 (en) | Polypropylene resin composition, T die film made of the same and method of producing T die film | |
| JPH08217889A (en) | Polypropylene sheet and container | |
| JP3721936B2 (en) | Polypropylene resin composition and molded article comprising the same | |
| JP2000273251A (en) | Polypropylene-based sheet | |
| JP4076661B2 (en) | Polypropylene sheet | |
| JPH0320331B2 (en) | ||
| EP0172277B1 (en) | Thermoformable propylene polymer laminated sheet | |
| JP4076672B2 (en) | Polypropylene sheet | |
| JPH11172059A (en) | Polypropylene sheet for packaging medicine | |
| JP2003342429A (en) | Polypropylene resin composition and use thereof | |
| JP2000248079A (en) | Polypropylene-based sheet | |
| JPH10237239A (en) | Resin composition for thermoforming and sheet made therefrom | |
| JP3360532B2 (en) | Thermoforming resin composition and sheet | |
| EP0920990A2 (en) | Composite olefin resin laminated sheet | |
| JP3637829B2 (en) | Polypropylene sheet for PTP packaging and packaging method using the same | |
| JP2000313753A (en) | Polypropylene-based sheet | |
| JP2002003668A (en) | Polypropylene resin composition for thermoforming and molded article using the same | |
| JPH11170454A (en) | Polypropylene sheet | |
| JP7652648B2 (en) | Highly rigid and transparent olefin resin molded body | |
| WO1999057195A1 (en) | Molded polypropylene | |
| JP3360544B2 (en) | Method for producing resin composition for thermoforming and resin composition obtained therefrom | |
| JPH09104060A (en) | Drug packing polypropylene sheet and production thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20051007 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20071109 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20071204 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080115 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080826 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081003 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20081028 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20081110 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111128 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121128 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121128 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131128 Year of fee payment: 5 |
|
| LAPS | Cancellation because of no payment of annual fees |