JPH05169555A - Manufacture of heat-resistant resin vessel having heat insulating property - Google Patents
Manufacture of heat-resistant resin vessel having heat insulating propertyInfo
- Publication number
- JPH05169555A JPH05169555A JP3355168A JP35516891A JPH05169555A JP H05169555 A JPH05169555 A JP H05169555A JP 3355168 A JP3355168 A JP 3355168A JP 35516891 A JP35516891 A JP 35516891A JP H05169555 A JPH05169555 A JP H05169555A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- container
- foaming agent
- foaming
- heat insulating
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229920006015 heat resistant resin Polymers 0.000 title claims description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 47
- 238000000576 coating method Methods 0.000 claims abstract description 47
- 239000004088 foaming agent Substances 0.000 claims abstract description 33
- 238000005187 foaming Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 238000000071 blow moulding Methods 0.000 claims description 2
- -1 for example Substances 0.000 abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 13
- 239000011347 resin Substances 0.000 abstract description 13
- 239000011230 binding agent Substances 0.000 abstract description 9
- 229920001577 copolymer Polymers 0.000 abstract description 8
- 239000002904 solvent Substances 0.000 abstract description 7
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 abstract description 4
- 239000004715 ethylene vinyl alcohol Substances 0.000 abstract description 4
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 abstract description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001035 drying Methods 0.000 description 13
- 229920001707 polybutylene terephthalate Polymers 0.000 description 10
- 238000010411 cooking Methods 0.000 description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
- 239000005020 polyethylene terephthalate Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000008162 cooking oil Substances 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 229920001230 polyarylate Polymers 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 229920000515 polycarbonate Polymers 0.000 description 4
- 229920001955 polyphenylene ether Polymers 0.000 description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000007666 vacuum forming Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920000306 polymethylpentene Polymers 0.000 description 2
- 239000011116 polymethylpentene Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱湯を注ぐ調理や電子
レンジによる調理などに使用される断熱性を有する耐熱
性樹脂容器の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a heat-resistant resin container having a heat insulating property, which is used for cooking by pouring hot water or cooking in a microwave oven.
【０００２】[0002]
【従来の技術】近年、インスタント食品や簡易食品の普
及に伴って、短時間で美味しく味わえるように、熱湯や
電子レンジ等を用いて調理できる包装食品が増えてきて
いる。この食品の包装には、通常、耐熱性の食品包装容
器が用いられている。2. Description of the Related Art In recent years, with the widespread use of instant foods and simple foods, the number of packaged foods that can be cooked with hot water, a microwave oven or the like so as to be delicious in a short time is increasing. A heat resistant food packaging container is usually used for packaging this food.
【０００３】一般に、耐熱性を有する樹脂製の食品包装
容器において、真空成形によって成形される容器の素材
としてはポリプロピレン（ＰＰ），ポリスチレン（Ｐ
Ｓ），変性ポリフェニレンエーテル（ＰＰＥ）および結
晶化されたポリエチレンテレフタレート（Ｃ−ＰＥ
Ｔ），ポリブチレンテレフタレートとポリエチレンテレ
フタレートのアロイ（ＰＢＴ／ＰＥＴアロイ）等が知ら
れている。また、射出成形によって成形される容器の素
材としてはポリブチレンテレフタレート（ＰＢＴ），ポ
リカーボネート（ＰＣ），ポリアリレート（ＰＡＲ），
ポリメチルペンテン（ＴＰＸ）等が知られている。しか
し、このような上記の樹脂製の容器を熱湯あるいは電子
レンジによる調理品として使用する場合、断熱性がない
ため調理直後には容器が熱すぎて素手では持てないとい
う欠点がある。Generally, in food packaging containers made of resin having heat resistance, polypropylene (PP) and polystyrene (P) are used as materials for containers formed by vacuum forming.
S), modified polyphenylene ether (PPE) and crystallized polyethylene terephthalate (C-PE)
T), alloys of polybutylene terephthalate and polyethylene terephthalate (PBT / PET alloy), etc. are known. The material of the container molded by injection molding is polybutylene terephthalate (PBT), polycarbonate (PC), polyarylate (PAR),
Polymethylpentene (TPX) and the like are known. However, when such a resin-made container is used as a cooked product in hot water or a microwave oven, there is a drawback that the container is too hot immediately after cooking and cannot be held with bare hands because it has no heat insulating property.
【０００４】また、熱湯を注ぐ調理に用いられる樹脂製
容器の素材として、一般に発泡ポリスチレン（ＰＳＰ）
が知られているが、耐熱性に問題があり、電子レンジに
用いるとき変形して使用することは困難であるという欠
点があった。Further, as a material for a resin container used for cooking by pouring hot water, expanded polystyrene (PSP) is generally used.
However, there is a problem in that it has a problem in heat resistance and it is difficult to deform and use it in a microwave oven.
【０００５】[0005]
【発明が解決しようとする課題】したがって、本発明は
上記従来の問題点に鑑み、耐熱性および断熱性を同時に
兼ね備えた樹脂容器の製造方法の提供を課題とする。Therefore, in view of the above-mentioned conventional problems, the present invention has an object to provide a method for producing a resin container having both heat resistance and heat insulation.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、鋭意研究
を重ねた結果、耐熱性樹脂容器の外側に発泡剤による断
熱層を形成させることにより、上記課題を解決できるこ
とを見出し発明を完成させた。すなわち、本発明は、耐
熱性樹脂容器の外側に発泡剤含有の塗工液を塗布した
後、加熱発泡させることを特徴とする断熱性を有する耐
熱性樹脂容器の製造方法を要旨とするものである。As a result of intensive studies, the present inventors have found that the above problems can be solved by forming a heat insulating layer with a foaming agent on the outside of a heat resistant resin container, and completed the invention. Let That is, the present invention is a gist of a method for producing a heat-resistant resin container having a heat insulating property, which comprises applying a foaming agent-containing coating liquid to the outside of the heat-resistant resin container, followed by heat-foaming. is there.
【０００７】以下、本発明を具体的に説明する。本発明
に用いられる耐熱性樹脂容器としては、通常知られてい
るポリプロピレン（ＰＰ），ポリスチレン（ＰＳ），変
性ポリフェニレンエーテル（ＰＰＥ）および結晶化され
たポリエチレンテレフタレート（Ｃ−ＰＥＴ），ポリブ
チレンテレフタレートとポリエチレンテレフタレートの
アロイ（ＰＢＴ／ＰＥＴアロイ），ポリブチレンテレフ
タレート（ＰＢＴ），ポリカーボネート（ＰＣ），ポリ
アリレート（ＰＡＲ），ポリメチルペンテン（ＴＰＸ）
等の材料から成形させたものが挙げられる。The present invention will be specifically described below. The heat-resistant resin container used in the present invention includes polypropylene (PP), polystyrene (PS), modified polyphenylene ether (PPE) and crystallized polyethylene terephthalate (C-PET), polybutylene terephthalate, which are commonly known. Polyethylene terephthalate alloy (PBT / PET alloy), polybutylene terephthalate (PBT), polycarbonate (PC), polyarylate (PAR), polymethylpentene (TPX)
And the like.
【０００８】本発明の方法においては、これらの樹脂容
器の外側に発泡剤含有の塗工液が塗布される。この塗布
は、容器の外側であれば用途に応じて、全体に塗布して
も一部に塗布してもよい。また、この塗工液はバインダ
ー樹脂を水または溶剤に分散させたもので、これに発泡
剤を添加含有させて得られる。そのバインダーとして
は、例えばエチレンビニルアルコール、アクリル、ウレ
タン等が挙げられる。In the method of the present invention, a coating solution containing a foaming agent is applied to the outside of these resin containers. This application may be applied to the whole or a part of the container depending on the application. The coating solution is a binder resin dispersed in water or a solvent, and can be obtained by adding a foaming agent thereto. Examples of the binder include ethylene vinyl alcohol, acryl, urethane and the like.
【０００９】また、上記塗工液に添加される発泡剤とし
ては、低沸点の炭化水素を内包する例えば、塩化ビニリ
デン−アクリロニトリル共重合物、メチルメタクリレー
ト−アクリロニトリル共重合物、アクリロニトリルなど
が挙げられる。これら本発明に用いられる発泡剤はその
種類によって異なるが、発泡倍率（体積比）１０倍以上
で発泡後の粒子径が１０μｍ以上のもので、調理時の加
熱温度に耐え得るものであればどのような種類でもよ
い。Examples of the foaming agent added to the coating liquid include vinylidene chloride-acrylonitrile copolymers, methylmethacrylate-acrylonitrile copolymers and acrylonitrile. The foaming agent used in the present invention varies depending on the type, but any foaming agent (volume ratio) of 10 times or more, having a particle size of 10 μm or more after foaming and capable of withstanding the heating temperature during cooking can be used. It may be any kind.
【００１０】また、本発明の方法に用いられる塗工液
は、容器に代えてシートあるいはパリソンにも塗布され
る場合があるが、塗布された後、発泡剤の発泡温度より
も十分低い温度でオーブン，ドライヤー等を用いて乾燥
され、塗工液中の水または溶剤が完全に蒸発する。この
乾燥した状態での塗工厚は、通常１０μｍ〜５００μｍ
の範囲であり、１０μｍより薄いと発泡後も断熱の効果
が小さくなり、５００μｍより厚いと過剰となりすぎて
好ましくない。この塗工厚は、シートあるいはパリソン
に塗布する場合には、成形時に伸ばされて薄くなるの
で、容器に塗布する場合に比べ比較的厚めに塗布するの
がよい。The coating liquid used in the method of the present invention may be applied to a sheet or a parison instead of the container, but after the application, the temperature is sufficiently lower than the foaming temperature of the foaming agent. It is dried using an oven or dryer, and the water or solvent in the coating solution evaporates completely. The coating thickness in this dry state is usually 10 μm to 500 μm.
If it is thinner than 10 μm, the effect of heat insulation becomes small even after foaming, and if it is thicker than 500 μm, it becomes excessive, which is not preferable. When applied to a sheet or parison, this coating thickness is stretched and thinned at the time of molding, so it is preferable to apply a relatively thicker thickness than when applied to a container.
【００１１】また、塗工液を塗布する際、プラスチック
に対してバインダーの接着が弱い場合には、アンダーコ
ートとしてプライマーを使用してもよい。さらに、上記
に示した塗工液に顔料を添加することや容器外側の一部
に塗布する場合にその塗工部分の形を工夫し、文字ある
いはその他の模様にするなどすれば、ディスプレイ効果
も期待できる。また、調理時に発泡させる場合、調理前
にはスマートな外観のものが、調理時にみるみる発泡し
ていく様子を観察することができる。When the binder is weakly adhered to the plastic when applying the coating liquid, a primer may be used as an undercoat. Furthermore, when a pigment is added to the above-mentioned coating liquid or when it is applied to a part of the outside of the container, the shape of the applied part is devised so that it has a letter or other pattern, so that the display effect can be obtained. Can be expected. In addition, when foaming is performed during cooking, it is possible to observe how a smart appearance before foaming is apparently foaming during cooking.
【００１２】本発明の方法において、発泡剤含有の塗工
液を塗布し加熱発泡させる方法としては、容器に塗布し
加熱発泡させる方法、シートに塗布し加熱発泡させる方
法、パリソンに塗布し加熱発泡させる方法がある。ま
ず、容器上に塗布し加熱発泡させる場合、その容器は真
空成形、圧空成形、射出成形、ブロー成形等どのように
成形されたものでもよい。そして、前記の容器の外側に
発泡剤含有の塗工液を、例えばスクリーンコーターによ
る曲面塗工で塗布し、オーブン，ドライヤー等で加熱し
て発泡させる。このときの加熱条件は、塗工液に含有さ
れる発泡剤によって異なるが、通常８０〜１８０℃の範
囲である。しかし、特にこの範囲に限定されるものでは
ない。In the method of the present invention, the method of applying the coating liquid containing the foaming agent and foaming by heating includes coating on a container and foaming by heating, coating on a sheet and foaming by heating, and coating on a parison and foaming by heating. There is a way to do it. First, when applied on a container and heat-foamed, the container may be formed by any method such as vacuum forming, pressure forming, injection molding, and blow molding. Then, a coating solution containing a foaming agent is applied to the outside of the container by curved surface coating using, for example, a screen coater, and heated by an oven, a dryer or the like to foam. The heating condition at this time varies depending on the foaming agent contained in the coating liquid, but is usually in the range of 80 to 180 ° C. However, it is not particularly limited to this range.
【００１３】つぎに、シートに塗布し加熱発泡させる場
合、ナイフコーター、コンマコーター、ロールコータ
ー、スクリーンコーター等でシートの外側に塗工液を塗
布し、十分乾燥した後、真空、圧空、真空圧空成形等で
容器に成形する。このとき発泡は、通常の容器成形の場
合には、シート状態の時に予備加熱によって行われる。
しかし、結晶化されたポリエチレンテレフタレート、ポ
リブチレンテレフタレートとポリエチレンテレフタレー
トとのアロイ等金型を加熱して容器成形が行われる場合
には、加熱金型内で発泡が行われる。また、予備加熱ま
たは加熱金型内での発泡において、加熱時間が短く発泡
が十分でない場合、あとからオーブン，ドライヤー等で
加熱することも可能である。Next, in the case of coating and heat-foaming the sheet, the coating liquid is applied to the outside of the sheet with a knife coater, comma coater, roll coater, screen coater, etc., and after sufficiently drying, vacuum, pressured air, vacuum pressured air are applied. Mold into a container by molding. At this time, foaming is performed by preheating in the sheet state in the case of ordinary container molding.
However, when container molding is performed by heating a die such as an alloy of crystallized polyethylene terephthalate, polybutylene terephthalate and polyethylene terephthalate, foaming is performed in the heating die. Further, in preheating or foaming in a heating mold, when the heating time is short and the foaming is not sufficient, it is possible to heat later with an oven, a dryer or the like.
【００１４】さらに、パリソンに塗布し加熱発泡させる
場合、容器の場合と同様の塗布の方法で行われ、ついで
ブロー成形時に発泡が行われる。この発泡は、シートに
塗布し加熱発泡させる場合と同様に、予備加熱あるいは
加熱金型内で行われる。Further, when the parison is applied and heated and foamed, the same application method as in the case of a container is performed, and then foaming is performed at the time of blow molding. This foaming is carried out in the preheating or in the heating die, as in the case of applying it to a sheet and foaming it by heating.
【００１５】上記で示したシートまたはパリソンに塗布
する場合、樹脂の種類によってそれぞれ成形温度が異な
るため、その成形温度に合った発泡温度の発泡剤を用い
ることが好ましい。また、これらを加熱発泡するときの
加熱条件は、通常８０〜１８０℃の範囲である。When applied to the above-mentioned sheet or parison, since the molding temperature varies depending on the type of resin, it is preferable to use a foaming agent having a foaming temperature suitable for the molding temperature. The heating conditions for foaming these by heating are usually in the range of 80 to 180 ° C.
【００１６】[0016]
【作用】上記したように、容器などの外側に発泡剤含有
の塗工液を塗布し断熱層を形成させることにより、容器
などに断熱性を付与することができ、熱湯または電子レ
ンジによる調理直後も容器を素手で持つことができる。As described above, by applying a foaming agent-containing coating liquid to the outside of a container or the like to form a heat insulating layer, it is possible to impart heat insulating property to the container or the like, and immediately after cooking with hot water or a microwave oven. Can hold the container with bare hands.
【００１７】[0017]
実施例１ 射出成形によって得られたポリカーボネート製容器の側
面にスクリーン印刷による曲面塗工で、エポキシ系のプ
ライマーを塗布し、乾燥後の塗工厚を３μｍにした。そ
して、発泡剤として塩化ビニリデン−アクリロニトリル
共重合物、バインダーとしてエチレンビニルアルコール
樹脂を溶剤に分散させた塗工液を曲面塗工により塗布
し、乾燥後の塗工厚を２００μｍにした。そして、ドラ
イヤーで乾燥した後、この容器を１００℃のオーブンに
１０分間放置し、十分発泡させた後、容器の中に調理用
オイルを入れ電子レンジ（消費電力９１０Ｗ）で２．５
分間加熱した。この時のオイルの温度を測定したとこ
ろ、１００℃であったが、容器側面の表面温度は７０℃
であり、十分素手で持つことができた。Example 1 An epoxy primer was applied to the side surface of a polycarbonate container obtained by injection molding by screen printing, and the coating thickness after drying was set to 3 μm. Then, a coating liquid in which a vinylidene chloride-acrylonitrile copolymer as a foaming agent and an ethylene vinyl alcohol resin as a binder were dispersed in a solvent was applied by curved surface coating to give a coating thickness after drying of 200 μm. Then, after drying with a dryer, this container was left in an oven at 100 ° C. for 10 minutes to sufficiently foam, then cooking oil was put in the container and a microwave oven (power consumption 910 W) was used for 2.5 minutes.
Heated for minutes. The temperature of the oil at this time was measured to be 100 ° C, but the surface temperature on the side surface of the container was 70 ° C.
I was able to hold it with my bare hands.
【００１８】比較例１ 比較として実施例１で用いたポリカーボネート製容器
に、エポキシ系のプライマーおよび実施例１で使った発
泡剤含有の塗工液を塗布しない状態で調理用オイルを入
れ、同様に電子レンジで２．５分間加熱した。この時の
オイルの温度を測定したところ、１００℃であったが、
容器側面の表面温度は９０℃であり、とても素手では持
てなかった。Comparative Example 1 For comparison, the polycarbonate container used in Example 1 was charged with cooking oil without applying the epoxy-based primer and the coating liquid containing the foaming agent used in Example 1, and the same procedure was performed. Heat in microwave for 2.5 minutes. When the temperature of the oil at this time was measured, it was 100 ° C,
The surface temperature on the side surface of the container was 90 ° C, which could not be held with bare hands.
【００１９】実施例２ 真空成形によって得られたフィラー入りポリプロピレン
製容器の側面にスクリーン印刷による曲面塗工で、イソ
シアネート系のプライマーを塗布し、乾燥後の塗工厚を
３μｍにした。そして、発泡剤として塩化ビニリデン−
アクリロニトリル共重合物、バインダーとしてエチレン
ビニルアルコール樹脂を溶剤に分散させた塗工液を曲面
塗工により乾燥後の厚さ２００μｍになるように塗布し
た。そして、ドライヤーで十分乾燥を行った後、９０℃
の熱湯を入れ、蓋をして５分間放置した。この時、容器
表面の発泡剤はみるみる発泡しお湯の温度は８５℃であ
ったが、容器表面の温度は６５℃であり、十分を素手で
持つことができた。Example 2 An isocyanate-based primer was applied to the side surface of a polypropylene container containing a filler obtained by vacuum forming by screen printing, and the coating thickness after drying was set to 3 μm. And vinylidene chloride as a foaming agent
A coating solution prepared by dispersing an acrylonitrile copolymer and an ethylene vinyl alcohol resin as a binder in a solvent was applied by curved surface coating so that the thickness after drying was 200 μm. Then, after sufficiently drying with a dryer, 90 ° C
Hot water was added, the container was covered and left for 5 minutes. At this time, the foaming agent on the surface of the container was visibly foamed and the temperature of the hot water was 85 ° C, but the temperature on the surface of the container was 65 ° C, and it was possible to hold it sufficiently with bare hands.
【００２０】比較例２ 比較として実施例２で用いたフィラー入りポリプロピレ
ン製の容器に、イソシアネート系のプライマーおよび発
泡剤含有の塗工液を塗布しない状態で９０℃の熱湯を入
れ、蓋をして５分間放置した。この時のお湯の温度は８
２℃であったが、容器側面の表面温度は８０℃であり素
手で容器を持つことができなかった。Comparative Example 2 For comparison, the polypropylene container containing the filler used in Example 2 was filled with hot water at 90 ° C. without being coated with the isocyanate-based primer and the coating solution containing the foaming agent, and the container was covered. Leave for 5 minutes. The temperature of the hot water at this time is 8
Although it was 2 ° C, the surface temperature of the side surface of the container was 80 ° C, and the container could not be held with bare hands.
【００２１】実施例３ フィラー入りポリプロピレン製シートにグラビアコータ
ーでイソシアネート系のプライマーを塗布し、乾燥後の
塗工厚を２μｍにした。そして、発泡剤としてメチルメ
タクリレート−アクリロニトリル共重合物、バインダー
としてアクリル樹脂を溶剤に分散させた塗工液をコンマ
コーターにより二回塗布し、乾燥炉を通して乾燥を行
い、乾燥後の塗工厚を３００μｍにした。そして、この
シートを雄型の容器の金型を用いて、塗工面が上側にな
るようにし、予備加熱温度１２０℃で真空成形を行い、
メチルメタクリレート−アクリロニトリル共重合物から
なる発泡剤を発泡させると同時に容器に成形した。この
容器中に９０℃の熱湯を入れ、蓋をして３分間放置し
た。この時のお湯の温度は８６℃であったが、容器の表
面温度は７０℃であり、十分容器を素手で持つことがで
きた。Example 3 An isocyanate-based primer was applied to a polypropylene sheet containing a filler with a gravure coater, and the coating thickness after drying was adjusted to 2 μm. Then, a coating solution prepared by dispersing a methyl methacrylate-acrylonitrile copolymer as a foaming agent and an acrylic resin as a binder in a solvent is applied twice by a comma coater and dried through a drying oven, and the coating thickness after drying is 300 μm. I chose Then, this sheet is vacuum-molded at a preheating temperature of 120 ° C. with the coating surface facing upward using a mold of a male container.
A foaming agent composed of a methyl methacrylate-acrylonitrile copolymer was foamed and simultaneously molded into a container. Hot water of 90 ° C. was placed in this container, the container was covered and left for 3 minutes. The temperature of the hot water at this time was 86 ° C, but the surface temperature of the container was 70 ° C, and the container could be held with bare hands.
【００２２】比較例３ 比較として実施例３で用いたフィラー入りポリプロピレ
ン製の容器に、実施例３で用いたイソシアネート系のプ
ライマーと発泡剤含有の塗工液を塗布しない状態で９０
℃の熱湯を入れ、蓋をして３分間放置した。この時のお
湯の温度は８３℃であったが、容器の表面温度は８０℃
であり、素手で容器を持つことはできなかった。Comparative Example 3 For comparison, the polypropylene-containing container used in Example 3 was filled with the isocyanate-based primer used in Example 3 and the coating liquid containing the foaming agent without application.
Pour boiling water at ℃, put the lid on and leave for 3 minutes. The temperature of the hot water at this time was 83 ° C, but the surface temperature of the container was 80 ° C.
It was impossible to hold the container with bare hands.
【００２３】実施例４ ポリブチレンテレフタレート樹脂７０重量部とポリエチ
レンテレフタレート３０重量部とからなる樹脂組成物を
結晶化度の低いシートに成形し、このシートにグラビア
コーターでエポキシ系のプライマーを塗布し、乾燥後の
塗工厚さ２μｍにした。そして、発泡剤としてアクリロ
ニトリル、バインダーとしてアクリル樹脂を溶剤に分散
させた塗工液をナイフコーターにより二回塗布し、乾燥
炉を通して十分乾燥を行い、乾燥後の塗工厚を３００μ
ｍにした。そして、このシートを雄型の容器の加熱金型
を用いてシートの塗工面が上側になるようにし、金型温
度１６０℃で真空成形を行い、アクリロニトリルからな
る発泡剤を発泡させると同時に容器に成形した。この容
器中に調理用のオイルを入れ同様に電子レンジで２．５
分間加熱した。この時のオイルの温度を測定したとこ
ろ、１００℃であったが、容器表面温度は７０℃であ
り、十分素手で容器を持つことができた。Example 4 A resin composition comprising 70 parts by weight of polybutylene terephthalate resin and 30 parts by weight of polyethylene terephthalate was molded into a sheet having a low crystallinity, and an epoxy primer was applied to the sheet with a gravure coater, The coating thickness after drying was set to 2 μm. Then, acrylonitrile as a foaming agent and an acrylic resin as a binder are dispersed twice in a solvent, and a coating liquid is applied twice by a knife coater and sufficiently dried through a drying oven to give a coating thickness of 300μ after drying.
It was set to m. Then, this sheet is subjected to vacuum molding at a mold temperature of 160 ° C. by using a heating mold of a male container so that the coated surface of the sheet faces upward, and a foaming agent made of acrylonitrile is foamed at the same time as a container. Molded. Put the cooking oil in this container and use a microwave oven for 2.5.
Heated for minutes. When the temperature of the oil at this time was measured, it was 100 ° C., but the surface temperature of the container was 70 ° C., and it was possible to hold the container with bare hands.
【００２４】比較例４ 比較として、実施例４で用いたシートを上記のシートに
エポキシ系のプライマーおよび発泡剤含有の塗工液を塗
工せずに上記と同じ条件で真空成形を行い、容器に成形
した。この容器中に調理用オイルを入れ同様に電子レン
ジで２．５分間加熱した。この時のオイルの温度を測定
したところ、１００℃であったが、容器表面温度は９０
℃であり、とても容器を素手で持つことはできなかっ
た。Comparative Example 4 For comparison, the sheet used in Example 4 was vacuum-formed under the same conditions as above without coating the above-mentioned sheet with a coating solution containing an epoxy-based primer and a foaming agent, and a container was obtained. Molded into. Cooking oil was placed in this container and heated in the same microwave oven for 2.5 minutes. When the temperature of the oil at this time was measured, it was 100 ° C, but the surface temperature of the container was 90 ° C.
It was ℃, and I could not hold the container with my bare hands.
【００２５】[0025]
【発明の効果】本発明の方法によれば、容器，シート，
パリソンの外側に発泡剤含有の塗工液を塗布し加熱発泡
させ断熱層を形成させることにより、従来調理直後には
素手では持てなかった容器が素手で持つことができ、そ
の操作性を著しく向上できる。According to the method of the present invention, containers, sheets,
By applying a coating solution containing a foaming agent to the outside of the parison and heating and foaming it to form a heat insulating layer, it is possible to hold a container that could not be held with bare hands immediately after cooking, and improve its operability significantly. it can.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 1/02 7016−4Ｆ 7/02 １０５ 7188−4Ｆ // Ｂ２９Ｋ 105:04 105:34 Ｂ２９Ｌ 9:00 4Ｆ 22:00 4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location B32B 1/02 7016-4F 7/02 105 7188-4F // B29K 105: 04 105: 34 B29L 9 : 00 4F 22:00 4F
Claims (3)
工液を塗布した後、加熱発泡させることを特徴とする断
熱性を有する耐熱性樹脂容器の製造方法。1. A method for producing a heat-resistant resin container having heat insulation properties, which comprises applying a foaming agent-containing coating liquid to the outside of a heat-resistant resin container and then heat-foaming.
加熱することにより成形と同時に発泡を行うことを特徴
とする断熱性を有する耐熱性樹脂容器の製造方法。2. A sheet is coated with a coating solution containing a foaming agent,
A method for producing a heat-resistant resin container having a heat insulating property, which comprises performing foaming simultaneously with molding by heating.
リソンの外側に発泡剤含有の塗工液を塗布し、加熱して
ブロー成形と発泡を行うことを特徴とする断熱性を有す
る耐熱性樹脂容器の製造方法。3. A heat-resistant resin container having a heat insulating property, characterized in that a coating liquid containing a foaming agent is applied to the outside of a parison molded by the cold parison method, and heated to perform blow molding and foaming. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3355168A JPH05169555A (en) | 1991-12-20 | 1991-12-20 | Manufacture of heat-resistant resin vessel having heat insulating property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3355168A JPH05169555A (en) | 1991-12-20 | 1991-12-20 | Manufacture of heat-resistant resin vessel having heat insulating property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05169555A true JPH05169555A (en) | 1993-07-09 |
Family
ID=18442340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3355168A Pending JPH05169555A (en) | 1991-12-20 | 1991-12-20 | Manufacture of heat-resistant resin vessel having heat insulating property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05169555A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007063708A (en) * | 2005-08-31 | 2007-03-15 | Toppan Printing Co Ltd | Heat-insulating coat paper and heat-insulating paper container using the same |
| JP2007532363A (en) * | 2004-04-16 | 2007-11-15 | アドバンスド プラスティックス テクノロジーズ ルクセンブルク エスアー | Single-layered and multilayered products, and extrusion molding methods for producing them |
-
1991
- 1991-12-20 JP JP3355168A patent/JPH05169555A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007532363A (en) * | 2004-04-16 | 2007-11-15 | アドバンスド プラスティックス テクノロジーズ ルクセンブルク エスアー | Single-layered and multilayered products, and extrusion molding methods for producing them |
| JP2007532362A (en) * | 2004-04-16 | 2007-11-15 | アドバンスド プラスティックス テクノロジーズ ルクセンブルク エスアー | Single-layered and multi-layered products, and injection molding method for producing the same |
| JP2012006402A (en) * | 2004-04-16 | 2012-01-12 | Concentrate Manufacturing Co Of Ireland | Mono-layer article and multi-layer article, and extrusion method of making the same |
| JP2012006403A (en) * | 2004-04-16 | 2012-01-12 | Concentrate Manufacturing Co Of Ireland | Mono-layer article and multi-layer article, and injection-molding method of making the same |
| JP2007063708A (en) * | 2005-08-31 | 2007-03-15 | Toppan Printing Co Ltd | Heat-insulating coat paper and heat-insulating paper container using the same |
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