JP2008094919A - Heat-resistant foam - Google Patents
Heat-resistant foam Download PDFInfo
- Publication number
- JP2008094919A JP2008094919A JP2006276658A JP2006276658A JP2008094919A JP 2008094919 A JP2008094919 A JP 2008094919A JP 2006276658 A JP2006276658 A JP 2006276658A JP 2006276658 A JP2006276658 A JP 2006276658A JP 2008094919 A JP2008094919 A JP 2008094919A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- weight
- polyphenylene ether
- polystyrene
- heat
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、ポリスチレン系樹脂とポリフェニレンエーテル系樹脂からなる耐熱性発泡体に関する。 The present invention relates to a heat resistant foam comprising a polystyrene resin and a polyphenylene ether resin.
熱可塑性樹脂の発泡体（シート等）は、軽量で、断熱性、遮音性、衝撃吸収性に優れた材料である。鮮魚保存用ケース、食品用トレー及びカップ等の容器、断熱ボード等に広く用いられている。特に、ポリスチレン系樹脂の発泡体が汎用されている。
しかしながら、ポリスチレン系樹脂の発泡体は、耐熱性が乏しいという本質的な欠点がある。近年、即席麺や弁当等の容器は、電子レンジ等による加熱に耐えられるよう容器内部に耐熱性を持たせるため、耐熱性フィルムでラミネート処理するものが増加しつつある。しかしながら、このような処理を施すことは、必然的に、工程が増加することによるコスト高を避けられない。
Thermoplastic resin foams (sheets, etc.) are lightweight and excellent in heat insulation, sound insulation, and shock absorption. Widely used in fresh fish storage cases, food trays and containers such as cups, heat insulation boards and the like. In particular, polystyrene resin foams are widely used.
However, polystyrene resin foams have the essential disadvantage of poor heat resistance. In recent years, containers such as instant noodles and bento boxes have been increasing in number to be laminated with a heat-resistant film in order to give heat resistance to the inside of the container so that it can withstand heating by a microwave oven or the like. However, such a treatment inevitably results in an increase in cost due to an increase in the number of steps.
この欠点を解決するため、ポリスチレン系樹脂に耐熱性のある樹脂を混合して、得られる発泡体の改質を図ろうとする試みが種々なされてきている。ポリスチレン系樹脂と混合する樹脂との相溶性、混合樹脂の粘弾性的流動特性、樹脂膜に対する発泡剤の透過特性等を考慮して、ポリスチレン系樹脂と混合する樹脂として、ポリフェニレンエーテル系樹脂が古くから注目されてきた（特許文献１、２、３、４）。 In order to solve this drawback, various attempts have been made to improve the foam obtained by mixing a heat-resistant resin with a polystyrene-based resin. Considering the compatibility with the resin mixed with the polystyrene resin, the viscoelastic flow characteristics of the mixed resin, the permeability of the foaming agent to the resin film, etc., the polyphenylene ether resin is an old resin mixed with the polystyrene resin. (Patent documents 1, 2, 3, 4).
これらの従来技術によりポリスチレン系樹脂及びポリフェニレンエーテル系樹脂の発泡シートを作成し、この発泡シートを容器に成形加工してみると、このような改良技術が汎用されていない理由が明確になる。すなわち、ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂から製造される発泡シート及びその成形加工品は、その製造工程及びシート・容器自体に、堪えがたい臭気が発生するのである。このことは、製造環境としても重大な問題であり、さらに、食品容器材料としては、致命的な欠陥となるものである。
本発明は、実質的に臭気を感じさせないポリスチレン系樹脂及びポリフェニレンエーテル系樹脂の発泡シート及びその成型加工品を提供することを目的とする。 An object of the present invention is to provide a foamed sheet of polystyrene-based resin and polyphenylene ether-based resin that does not substantially cause odor, and a molded product thereof.
本発明者は、ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂を原材料とする発泡シート及びその成型加工品に実質的に臭気を感じさせない処方について鋭意研究を重ねた結果、驚くべきことに、ポリスチレン系樹脂の長所を維持しながら、軟化温度をポリスチレン系樹脂よりも１０℃以上も向上させるとともに、実質的に臭気を感じさせない組成物を見出し、本発明を完成するに到ったものである。 As a result of intensive research on a foam sheet made of polystyrene resin and polyphenylene ether resin as raw materials and a formulation that does not make the molded article feel substantially odor, surprisingly, the present inventors have surprisingly found that polystyrene resin While maintaining the advantages, the present inventors have found a composition that improves the softening temperature by 10 ° C. or more as compared with polystyrene resins and does not feel odor substantially, and has completed the present invention.
すなわち、本発明は、ポリスチレン系樹脂５０〜９０重量部及びポリフェニレンエーテル系樹脂５０〜１０重量部からなる基材樹脂１００重量部に対して、予めポリスチレン系樹脂及び／又はポリフェニレンエーテル系樹脂に疎水性ゼオライトを１０〜４０重量％練り込んだマスターペレット１〜１０重量部及び揮発性発泡剤を３重量％以下含有させた耐熱性発泡体及びその成形加工品である。
疎水性ゼオライトは、構造的には、ＡｌＯ４とＳｉＯ４の四面体が互いに酸素イオンを共有しながら連結して、骨格が無限に広がった複雑で、結晶性の無機高分子である。そしてゼオライトのシリカ／アルミナ比が高いほど疎水性が高い。Ｙ型ゼオライトをスチーム処理によりアルミを除去して疎水性のＹ型ゼオライトを得ることができる。
また、本発明の耐熱性発泡体は、例えばプレス加工することにより種々の容器に成形加工することができ、臭気は実質的に生じないから、特に食品用容器向けに好適に使用することができる。
That is, in the present invention, the polystyrene resin and / or the polyphenylene ether resin is hydrophobic in advance with respect to 100 parts by weight of the base resin composed of 50 to 90 parts by weight of the polystyrene resin and 50 to 10 parts by weight of the polyphenylene ether resin. A heat-resistant foam containing 1 to 10 parts by weight of master pellets containing 10 to 40% by weight of zeolite and 3% by weight or less of a volatile foaming agent, and a molded product thereof.
Hydrophobic zeolite is structurally a complex and crystalline inorganic polymer in which the tetrahedrons of AlO 4 and SiO 4 are linked while sharing oxygen ions with each other, and the skeleton is infinitely widened. And the higher the silica / alumina ratio of the zeolite, the higher the hydrophobicity. Hydrophobic Y-type zeolite can be obtained by removing aluminum from the Y-type zeolite by steam treatment.
In addition, the heat-resistant foam of the present invention can be molded into various containers by, for example, pressing, and odor is not substantially generated, so that it can be suitably used particularly for food containers. .
本発明のポリスチレン系樹脂及びポリフェニレンエーテル系樹脂の耐熱性発泡体及びその成型加工品は、その製造工程及び得られる成型加工品には、実質的に臭気を感じさせないとともに、その成形品は、ポリスチレン系樹脂の軟化点よりも１０℃以上も高いから、特にラミネート処理を施さずに、熱湯を注いでも変形しない即席麺の容器や電子レンジで加熱しても変形しない容器として汎用できる。さらに、本発明の成型加工品は、低温における耐衝撃性にも優れており、冷凍食品分野の用途を大きく広げることができる。
また、場合により、本発明に係る成形加工品にラミネート処理することも本発明の範囲内の事項である。
The polystyrene-based resin and polyphenylene ether-based heat-resistant foam of the present invention and the molded product thereof are substantially free from odor in the production process and the molded product obtained, and the molded product is polystyrene. Since it is higher than the softening point of the base resin by 10 ° C. or more, it can be generally used as a container for instant noodles that does not deform even when pouring hot water without being laminated, or a container that does not deform when heated in a microwave oven. Furthermore, the molded product of the present invention is excellent in impact resistance at low temperatures, and can greatly expand the applications in the frozen food field.
Moreover, depending on the case, it is also a matter within the scope of the present invention to laminate the molded product according to the present invention.
本発明の耐熱性発泡体（シート等）は、ポリスチレン系樹脂５０〜９０重量部及びポリフェニレンエーテル系樹脂５０〜１０重量部からなる基材樹脂１００重量部に対して、予めポリスチレン系樹脂及び／又はポリフェニレンエーテル系樹脂に疎水性ゼオライトを１０〜４０重量％練り込んだマスターペレット１〜１０重量部及び揮発性発泡剤を３重量％以下含有させた耐熱性発泡体である。 The heat-resistant foam (sheet or the like) of the present invention is prepared in advance with respect to 100 parts by weight of a base resin composed of 50 to 90 parts by weight of a polystyrene resin and 50 to 10 parts by weight of a polyphenylene ether resin. It is a heat resistant foam containing 1 to 10 parts by weight of master pellets in which 10 to 40% by weight of hydrophobic zeolite is kneaded in a polyphenylene ether resin and 3% by weight or less of a volatile foaming agent.
本発明に使用されるポリスチレン系樹脂としては、ポリスチレン、スチレンとα−メチルスチレンとの共重合体、スチレン・ブタジエン共重合体、スチレン・アクリロニトリル共重合体などが挙げられる。 Examples of the polystyrene resin used in the present invention include polystyrene, a copolymer of styrene and α-methylstyrene, a styrene / butadiene copolymer, and a styrene / acrylonitrile copolymer.
本発明に使用されるポリフェニレンエーテル系樹脂は、次の一般式で表される。 The polyphenylene ether resin used in the present invention is represented by the following general formula.
ここでＲ１及びＲ２は、炭素数１〜４のアルキル基又はハロゲン原子を示し、ｎは重合度を表す正の整数である。
例示すれば、ポリ（２，６−ジメチルフェニレン−１，４−エーテル）、ポリ（２，６−ジエチルフェニレン−１，４−エーテル）、ポリ（２，６−ジクロルフェニレン−１，４−エーテル）等である。重合度ｎは、通常１０〜５０００の範囲内にある。
Here, R 1 and R 2 represent an alkyl group having 1 to 4 carbon atoms or a halogen atom, and n is a positive integer representing the degree of polymerization.
For example, poly (2,6-dimethylphenylene-1,4-ether), poly (2,6-diethylphenylene-1,4-ether), poly (2,6-dichlorophenylene-1,4-ether) Ether) and the like. The degree of polymerization n is usually in the range of 10 to 5000.
本発明においては、基材樹脂として、ポリスチレン系樹脂５０〜９０重量部及びポリフェニレンエーテル系樹脂５０〜１０重量部が用いられる。
通常、ポリスチレン系樹脂のビカット軟化温度は、１０２℃であるが、ポリスチレン系樹脂とポリフェニレンエーテル系樹脂の配合比率を変えることにより、ビカット軟化温度を１１０〜１２５℃の範囲に変更することができる。
In the present invention, 50 to 90 parts by weight of polystyrene resin and 50 to 10 parts by weight of polyphenylene ether resin are used as the base resin.
Usually, the Vicat softening temperature of the polystyrene resin is 102 ° C., but the Vicat softening temperature can be changed to a range of 110 to 125 ° C. by changing the blending ratio of the polystyrene resin and the polyphenylene ether resin.
本発明において、ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂からなる基材樹脂に対して、予めポリスチレン系樹脂及び／又はポリフェニレンエーテル系樹脂に疎水性ゼオライトを１０〜４０重量％練り込んだマスターペレット１〜１０重量部並びに揮発性発泡剤を３重量％以下含有させる。
本発明において、予めポリスチレン系樹脂及び／又はポリフェニレンエーテル系樹脂に疎水性ゼオライトを１０〜４０重量％練り込んだマスターペレットを用いることは必須である。ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂からなる基材樹脂に直接疎水性ゼオライトを添加しても、本発明の効果を得ることはできない。
In the present invention, master pellets 1 to 10 in which 10 to 40% by weight of a hydrophobic zeolite is previously kneaded into a polystyrene resin and / or a polyphenylene ether resin with respect to a base resin composed of a polystyrene resin and a polyphenylene ether resin. Part by weight and 3% by weight or less of a volatile foaming agent are contained.
In the present invention, it is essential to use master pellets in which 10 to 40% by weight of hydrophobic zeolite is previously kneaded into polystyrene resin and / or polyphenylene ether resin. Even if hydrophobic zeolite is added directly to a base resin composed of a polystyrene resin and a polyphenylene ether resin, the effect of the present invention cannot be obtained.
ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂からなる基材樹脂並びに疎水性ゼオライトを含むマスターペレットに揮発性発泡剤を混合して所望の発泡倍率の耐熱性発泡体は、次のようにして製造される。
発泡剤としては炭素数３〜５の飽和脂肪族炭化水素、例えば、プロパン、ブタン、ペンタン、イソブタン、ネオペンタン等を使用する。好ましくは、プロパン、ブタンが使用される。基材樹脂１００重量部に対して、１〜５重量部、好ましくは１〜３重量部である。
A volatile foaming agent is mixed with a master pellet containing a base resin composed of a polystyrene resin and a polyphenylene ether resin and a hydrophobic zeolite, and a heat-resistant foam having a desired expansion ratio is produced as follows.
As the blowing agent, a saturated aliphatic hydrocarbon having 3 to 5 carbon atoms, such as propane, butane, pentane, isobutane, neopentane, or the like is used. Preferably, propane and butane are used. The amount is 1 to 5 parts by weight, preferably 1 to 3 parts by weight, based on 100 parts by weight of the base resin.
ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂からなる基材樹脂並びに疎水性ゼオライトを含むマスターペレットに発泡剤を加えて、発泡を抑えながら十分に混練し、サーキュラ金型から円筒状に押し出して、発泡させて円筒状発泡体を得、ついで、この円筒状発泡体を切断し、展開してその後発泡体中に発泡剤が１〜３重量％含有されている状態でさらに発泡体を常温で熟成する。
基材樹脂及びマスターペレットに発泡剤を混合するには、押出機中で基材樹脂及びマスターペレットを加熱下に十分混練した後、これに発泡剤を圧入する。
発泡剤を圧入混合した直後に発泡剤が含まれている基材樹脂及びマスターペレットをサーキュラ金型から円筒状に押し出して、発泡させて円筒状発泡体を得る。ついで、この円筒状発泡体を切断して、２枚のシートに展開する。巻き取られたシートは、発泡体中に発泡剤が１〜３重量％含有されている状態でさらに常温で熟成する。
発泡倍率は、目的に応じて、発泡剤の使用量や温度・圧力条件をコントロールして２〜１５倍とすることができる。
これらのどの工程においても臭気は実質的に抑制された。
Add a foaming agent to a master pellet containing polystyrene resin and polyphenylene ether resin base resin and hydrophobic zeolite, knead well while suppressing foaming, extrude into a cylindrical shape from a circular mold, and foam A cylindrical foam is obtained, then the cylindrical foam is cut and expanded, and then the foam is further aged at room temperature in a state where 1 to 3% by weight of a foaming agent is contained in the foam.
In order to mix the foaming agent with the base resin and the master pellet, the base resin and the master pellet are sufficiently kneaded under heating in an extruder, and then the foaming agent is pressed into the foam.
Immediately after injecting and mixing the foaming agent, the base resin and the master pellet containing the foaming agent are extruded from a circular mold into a cylindrical shape and foamed to obtain a cylindrical foam. Next, the cylindrical foam is cut and spread on two sheets. The wound sheet is further aged at room temperature in a state where 1 to 3% by weight of a foaming agent is contained in the foam.
The expansion ratio can be set to 2 to 15 times by controlling the amount of foaming agent used and the temperature and pressure conditions according to the purpose.
In any of these steps, the odor was substantially suppressed.
以下に本発明の構成を実施例により具体的に説明する。
実施例１〜３
ポリスチレン（日本ポリスチレン（株）製、商品名「Ｇ１２０Ｋ」）５０重量部、助剤としてスチレン−ブタジエンブロック共重合体（商品名「デンカクリアレン７３０Ｌ」）３０重量部、疎水性ゼオライト（ユニオン昭和（株）製商品名「アブセンツ」）２０重量部を押出機で溶融混練してペレット（以下「マスターペレット」という。）を得た。
ポリスチレン（日本ポリスチレン製、商品名「Ｇ７９７Ｎ」、ＭＦＲ １．５ｇ／１０分）、ポリフェニレンエーテル（日本ＧＥプラスチック（株）製、商品名「ノリルＰＫＮ４７５２」、ＭＦＲ １４ｇ／１０分、３００℃）（以下「ノリル」という。）及び前記のマスターペレットを表１に記載した配合比率で混合ミキサーにて混練し、押出機に供給した。
押出機は、シリンダー温度１９０〜２７０℃、樹脂温度２４０〜２４５℃、圧力１４０〜２００ｋｇ／ｃｍ２に調整した。
発泡剤として、イソブタン５５〜１００重量％及びノルマルブタン０〜４５重量％からなる炭化水素を使用した。発泡倍率が１０±１となるように炭化水素の使用量をコントロールした。
押出機の発泡剤圧入部は出口付近とし、出口付近には高混練可能なスクリューを備えた単軸押出機を使用した。
The configuration of the present invention will be specifically described below with reference to examples.
Examples 1-3
50 parts by weight of polystyrene (made by Nippon Polystyrene Co., Ltd., trade name “G120K”), 30 parts by weight of styrene-butadiene block copolymer (trade name “Denkaclearene 730L”) as an auxiliary agent, hydrophobic zeolite (Union Showa ( 20 parts by weight (trade name “Absents”) manufactured by the same company were melt-kneaded with an extruder to obtain pellets (hereinafter referred to as “master pellets”).
Polystyrene (made by Nippon Polystyrene, trade name “G797N”, MFR 1.5 g / 10 minutes), polyphenylene ether (made by Nippon GE Plastics Co., Ltd., trade name “Noryl PKN4752”, MFR 14 g / 10 minutes, 300 ° C.) "Noryl") and the above master pellets were kneaded by a mixing mixer at the blending ratio shown in Table 1 and supplied to an extruder.
The extruder was adjusted to a cylinder temperature of 190 to 270 ° C., a resin temperature of 240 to 245 ° C., and a pressure of 140 to 200 kg / cm 2 .
As a blowing agent, a hydrocarbon composed of 55 to 100% by weight of isobutane and 0 to 45% by weight of normal butane was used. The amount of hydrocarbon used was controlled so that the expansion ratio was 10 ± 1.
The blowing agent press-fitting part of the extruder was set near the outlet, and a single-screw extruder equipped with a screw capable of high kneading was used near the outlet.
押出機内で混練された溶融樹脂は、連結管を介して、２段目の押出機に供給した。シリンダー温度は、１１５〜１６５℃、樹脂温度１５５〜１６５℃、圧力１６０〜１７０ｋｇ／ｃｍ２に調整した。樹脂組成物を発泡に適した樹脂温度まで冷却した後、この樹脂組成物を、２段押出機の先端（出口側）に装着されたダイの口金（リップ幅４０〜５０ｍｍ）から、２２０〜２５０ｋｇ／時間の速度で押出し、発泡させた。ダイ圧力は２００〜２１０ｋｇ／ｃｍ２とした。リップ径は１９０ｍｍ、ドラム径は６６８ｍｍである。これにより、１０５０ｍｍ幅の発泡シートの２本取りが得られた。シートの厚みは、２．００ｍｍ、坪量１８０〜２５０ｇとした。延伸倍率は２±０．２とした。 The molten resin kneaded in the extruder was supplied to the second-stage extruder via a connecting pipe. The cylinder temperature was adjusted to 115 to 165 ° C., the resin temperature 155 to 165 ° C., and the pressure 160 to 170 kg / cm 2 . After cooling the resin composition to a resin temperature suitable for foaming, the resin composition is transferred from the die base (lip width 40 to 50 mm) attached to the tip (exit side) of the two-stage extruder to 220 to 250 kg. Extruded at a rate of / hour and foamed. The die pressure was 200 to 210 kg / cm 2 . The lip diameter is 190 mm and the drum diameter is 668 mm. As a result, two foam sheets having a width of 1050 mm were obtained. The thickness of the sheet was 2.00 mm and the basis weight was 180 to 250 g. The draw ratio was 2 ± 0.2.
実施例１〜３においては、作業環境においても、また得られた発泡シートにも臭気は実質的に解消された。
なお、参考例でしめした耐熱ＰＳ（ポリスチレン）は、硬く割れやすいため、高耐衝撃性ポリスチレン等の添加が必要となるため、耐熱温度が低下してしまう。ポリプロピレン発泡シートも汎用されているが、耐熱温度は１１０℃をクリアできるもののいわゆる腰がないため、内容物の荷重により変形してしまう。
マスターペレットを使用せずに単に、ポリスチレンとポリフェニレンエーテルを混練、発泡した場合には、臭気が強く、作業環境が著しく悪くなるので、作業を中止した。
In Examples 1 to 3, the odor was substantially eliminated both in the work environment and in the obtained foamed sheet.
In addition, since the heat-resistant PS (polystyrene) shown in the reference example is hard and easily cracked, it is necessary to add high-impact polystyrene or the like, so that the heat-resistant temperature is lowered. Polypropylene foam sheets are also widely used. However, although the heat resistant temperature can be cleared to 110 ° C., there is no so-called waist, so that the sheet is deformed by the load of the contents.
When polystyrene and polyphenylene ether were simply kneaded and foamed without using master pellets, the work was stopped because the odor was strong and the working environment was significantly worsened.
ポリスチレン系樹脂にポリフェニレンエーテル系樹脂を加えて得られる発泡シート及びその成形加工品は、耐熱性が向上し、広い用途に使用できる可能性があるにもかかわらず、発泡シートを製造する工程及び成形加工する工程並びに得られた成形加工品は、ポリスチレン系樹脂若しくはポリフェニレンエーテル系樹脂又はこの両者に原因があると思われる臭気を伴う。これは、特に食品向け容器としては、致命的である。
本発明によれば、これらの臭気の発生を抑制できるので、ポリスチレン系樹脂及びポリフェニレンエーテル系樹脂を基材樹脂とする発泡シート及びその成形加工品の用途は、飛躍的に増大することが期待される。
A foamed sheet obtained by adding a polyphenylene ether resin to a polystyrene resin and a molded product thereof have improved heat resistance and may be used in a wide range of applications, but the process and molding of the foamed sheet are possible. The process to be processed and the obtained molded product have an odor that seems to be caused by the polystyrene resin or the polyphenylene ether resin or both. This is especially fatal for food containers.
According to the present invention, since generation of these odors can be suppressed, the use of a foam sheet using a polystyrene resin and a polyphenylene ether resin as a base resin and a molded product thereof is expected to increase dramatically. The
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006276658A JP4699327B2 (en) | 2006-10-10 | 2006-10-10 | Manufacturing method of heat-resistant resin container for food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006276658A JP4699327B2 (en) | 2006-10-10 | 2006-10-10 | Manufacturing method of heat-resistant resin container for food |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008094919A true JP2008094919A (en) | 2008-04-24 |
| JP4699327B2 JP4699327B2 (en) | 2011-06-08 |
Family
ID=39378114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006276658A Active JP4699327B2 (en) | 2006-10-10 | 2006-10-10 | Manufacturing method of heat-resistant resin container for food |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4699327B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008063569A (en) * | 2006-08-08 | 2008-03-21 | Mitsubishi Engineering Plastics Corp | Conductive resin composition and molded article obtained by molding the same |
| JP2011246588A (en) * | 2010-05-26 | 2011-12-08 | Dic Corp | Foamable styrenic resin composition, foamed sheet thereof, and foamed container |
| JP4848476B1 (en) * | 2010-08-26 | 2011-12-28 | 積水化成品工業株式会社 | Thermoformed product manufacturing method and food container |
| JP2012006357A (en) * | 2010-06-28 | 2012-01-12 | Sekisui Plastics Co Ltd | Polystyrenic resin laminate foamed sheet, container, and method for manufacturing the polystyrenic resin laminate foamed sheet |
| JP2012077165A (en) * | 2010-09-30 | 2012-04-19 | Sekisui Plastics Co Ltd | Polystyrenic resin expanded sheet, molded article, and method for producing polystyrenic resin expanded sheet |
| JP2012140549A (en) * | 2011-01-04 | 2012-07-26 | Toyo Styrene Co Ltd | Heat-resistant resin composition and foam molded body |
| JP5023237B1 (en) * | 2011-03-25 | 2012-09-12 | 積水化成品工業株式会社 | Polystyrene resin foam sheet, container, and method for producing polystyrene resin foam sheet |
| JP2013028711A (en) * | 2011-07-28 | 2013-02-07 | Fp Corp | Heat-resistant polystyrene-based resin composition, heat resistant polystyrene-based resin foamed sheet, laminated sheet, and packaging container |
| JP2015189868A (en) * | 2014-03-28 | 2015-11-02 | 共栄産業株式会社 | Deodorizing method of molded article and foamed article of modified polyphenylene ether, sheet-like foamed article of modified polyphenylene ether, method for producing sheet-like foamed article of modified polyphenylene ether, and foam food container |
| JP2017193724A (en) * | 2017-08-07 | 2017-10-26 | 共栄産業株式会社 | Manufacturing method of sheet-like modified polyphenylene ether expanded material and expanded food container |
| JP2018009055A (en) * | 2016-07-11 | 2018-01-18 | 共栄産業株式会社 | Method for producing high-strength modified polyphenylene ether resin extruded foamed sheet for deep drawing, method for producing deep-drawn high-strength molded article, high-strength modified polyphenylene ether resin extruded foamed sheet for deep drawing and deep-drawn high-strength foamed molded article |
| JP2019206620A (en) * | 2018-05-28 | 2019-12-05 | Ｐｓジャパン株式会社 | Styrene-based resin composition, sheet, and molded product |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52101267A (en) * | 1976-02-23 | 1977-08-25 | Asahi Dow Ltd | Process for manufacture of heat resisting foam |
| JPS6331957Y2 (en) * | 1983-07-29 | 1988-08-25 | ||
| JPH03153755A (en) * | 1989-11-10 | 1991-07-01 | Asahi Chem Ind Co Ltd | Polyphenylene ether resin composition with improved odor |
| JPH03237139A (en) * | 1990-02-15 | 1991-10-23 | Kanegafuchi Chem Ind Co Ltd | Foamed sheet for food packaging container or the like |
| JPH07227940A (en) * | 1994-02-16 | 1995-08-29 | Goyo Paper Working Co Ltd | Sheet base material for food container |
| JP2002069315A (en) * | 2000-04-27 | 2002-03-08 | Degussa Ag | Colorless plastic releasing little contaminant, packaging material, structure member, decorating object, textile fabric and their products made thereof and master batch for producing the plastic |
| JP2003313345A (en) * | 2002-04-19 | 2003-11-06 | Jsp Corp | Thermoplastic resin foam and method for producing thermoplastic resin foam |
| JP2006257404A (en) * | 2005-02-15 | 2006-09-28 | Mitsubishi Engineering Plastics Corp | Resin composition having low odor |
-
2006
- 2006-10-10 JP JP2006276658A patent/JP4699327B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52101267A (en) * | 1976-02-23 | 1977-08-25 | Asahi Dow Ltd | Process for manufacture of heat resisting foam |
| JPS6331957Y2 (en) * | 1983-07-29 | 1988-08-25 | ||
| JPH03153755A (en) * | 1989-11-10 | 1991-07-01 | Asahi Chem Ind Co Ltd | Polyphenylene ether resin composition with improved odor |
| JPH03237139A (en) * | 1990-02-15 | 1991-10-23 | Kanegafuchi Chem Ind Co Ltd | Foamed sheet for food packaging container or the like |
| JPH07227940A (en) * | 1994-02-16 | 1995-08-29 | Goyo Paper Working Co Ltd | Sheet base material for food container |
| JP2002069315A (en) * | 2000-04-27 | 2002-03-08 | Degussa Ag | Colorless plastic releasing little contaminant, packaging material, structure member, decorating object, textile fabric and their products made thereof and master batch for producing the plastic |
| JP2003313345A (en) * | 2002-04-19 | 2003-11-06 | Jsp Corp | Thermoplastic resin foam and method for producing thermoplastic resin foam |
| JP2006257404A (en) * | 2005-02-15 | 2006-09-28 | Mitsubishi Engineering Plastics Corp | Resin composition having low odor |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008063569A (en) * | 2006-08-08 | 2008-03-21 | Mitsubishi Engineering Plastics Corp | Conductive resin composition and molded article obtained by molding the same |
| JP2011246588A (en) * | 2010-05-26 | 2011-12-08 | Dic Corp | Foamable styrenic resin composition, foamed sheet thereof, and foamed container |
| JP2012006357A (en) * | 2010-06-28 | 2012-01-12 | Sekisui Plastics Co Ltd | Polystyrenic resin laminate foamed sheet, container, and method for manufacturing the polystyrenic resin laminate foamed sheet |
| JP4848476B1 (en) * | 2010-08-26 | 2011-12-28 | 積水化成品工業株式会社 | Thermoformed product manufacturing method and food container |
| JP2012077165A (en) * | 2010-09-30 | 2012-04-19 | Sekisui Plastics Co Ltd | Polystyrenic resin expanded sheet, molded article, and method for producing polystyrenic resin expanded sheet |
| JP2012140549A (en) * | 2011-01-04 | 2012-07-26 | Toyo Styrene Co Ltd | Heat-resistant resin composition and foam molded body |
| JP2012214812A (en) * | 2011-03-25 | 2012-11-08 | Sekisui Plastics Co Ltd | Polystyrene-based resin foamed sheet, container, and method for producing polystyrene-based resin foamed sheet |
| JP2012214811A (en) * | 2011-03-25 | 2012-11-08 | Sekisui Plastics Co Ltd | Polystyrene-based resin foamed sheet, container, and method for producing polystyrene-based resin foamed sheet |
| JP5023237B1 (en) * | 2011-03-25 | 2012-09-12 | 積水化成品工業株式会社 | Polystyrene resin foam sheet, container, and method for producing polystyrene resin foam sheet |
| JP2012214810A (en) * | 2011-03-25 | 2012-11-08 | Sekisui Plastics Co Ltd | Polystyrene-based resin foamed sheet, container, and method for producing polystyrene-based resin foamed sheet |
| JP2013028711A (en) * | 2011-07-28 | 2013-02-07 | Fp Corp | Heat-resistant polystyrene-based resin composition, heat resistant polystyrene-based resin foamed sheet, laminated sheet, and packaging container |
| JP2015189868A (en) * | 2014-03-28 | 2015-11-02 | 共栄産業株式会社 | Deodorizing method of molded article and foamed article of modified polyphenylene ether, sheet-like foamed article of modified polyphenylene ether, method for producing sheet-like foamed article of modified polyphenylene ether, and foam food container |
| JP2018009055A (en) * | 2016-07-11 | 2018-01-18 | 共栄産業株式会社 | Method for producing high-strength modified polyphenylene ether resin extruded foamed sheet for deep drawing, method for producing deep-drawn high-strength molded article, high-strength modified polyphenylene ether resin extruded foamed sheet for deep drawing and deep-drawn high-strength foamed molded article |
| JP2017193724A (en) * | 2017-08-07 | 2017-10-26 | 共栄産業株式会社 | Manufacturing method of sheet-like modified polyphenylene ether expanded material and expanded food container |
| JP2019206620A (en) * | 2018-05-28 | 2019-12-05 | Ｐｓジャパン株式会社 | Styrene-based resin composition, sheet, and molded product |
| JP7116593B2 (en) | 2018-05-28 | 2022-08-10 | Ｐｓジャパン株式会社 | Styrene-based resin composition, sheet, and molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4699327B2 (en) | 2011-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4699327B2 (en) | Manufacturing method of heat-resistant resin container for food | |
| RU2399634C2 (en) | Foaming granular materials based on vinyl aromatic polymers having high foaminess and method of producing said materials | |
| JP6161561B2 (en) | Sheet-like deodorant foam molded product, process for producing the same, and foamed food container | |
| JP6469973B2 (en) | Method of manufacturing thermoplastic resin extruded foam insulation board | |
| WO2015137363A1 (en) | Styrene-based resin foam-molded article and method for manufacturing same | |
| JP2013528248A (en) | Foam with improved thermal properties | |
| JP2010229205A (en) | Expandable thermoplastic resin particle, process for producing the same, prefoamed particle and foam molded product | |
| JPH04122741A (en) | Polyphenylene ether foam obtained from low-i.v. expandable polyphenylene ether particle | |
| JP6421825B2 (en) | Styrene foam sheet and molded body using the same | |
| JP6187707B2 (en) | Styrene foam sheet and molded body using the same | |
| CN114245814B (en) | Predried polystyrene/alumina compound for foam extrusion | |
| CA3098984C (en) | Polystyrene compositions for foam extrusion | |
| JP2023063388A (en) | Styrenic resin composition, and method for producing foamable styrenic resin particle | |
| JP4959396B2 (en) | Water-absorbing polystyrene resin foam board | |
| JP2019210439A (en) | Styrenic resin composition for extrusion foaming, foam sheet, container, and tabular foam | |
| JP6267130B2 (en) | Composition for the production of hydrophilic polystyrene products | |
| JP7144955B2 (en) | Method for producing styrenic resin composition and expandable styrenic resin particles | |
| JP6526384B2 (en) | Modified polyphenylene ether molded article and method for deodorizing foam, sheet-like modified polyphenylene ether foam, method for producing sheet-like modified polyphenylene ether foam and foamed food container | |
| EA025190B1 (en) | Expanded polystyrene and process of forming foamed polystyrene articles from said expanded polystyrene | |
| TW200411010A (en) | Open-cell microcellular polystyrene foams and method for making the same | |
| JP6389306B2 (en) | Process for producing sheet-like modified polyphenylene ether foam and foamed food container | |
| JPH02218727A (en) | Production of heat-resistant foamed sheet | |
| JP7028585B2 (en) | Styrene-based resin composition for extrusion foaming, foaming sheet, container, and plate-shaped foam | |
| JP3269856B2 (en) | Foam sheet | |
| JP2012011638A (en) | Foamed polystyrene resin sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20091216 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20100121 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100309 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20100428 |
|
| A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20100507 |
|
| RD13 | Notification of appointment of power of sub attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7433 Effective date: 20100513 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20100513 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100603 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100608 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20100608 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100810 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100903 |
|
| A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20110106 |
|
| A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20110119 |
|
| 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: 20110222 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110302 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4699327 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| RD14 | Notification of resignation of power of sub attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7434 Effective date: 20110426 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |