JPH0595842A - Insulation vessel - Google Patents
Insulation vesselInfo
- Publication number
- JPH0595842A JPH0595842A JP25795791A JP25795791A JPH0595842A JP H0595842 A JPH0595842 A JP H0595842A JP 25795791 A JP25795791 A JP 25795791A JP 25795791 A JP25795791 A JP 25795791A JP H0595842 A JPH0595842 A JP H0595842A
- Authority
- JP
- Japan
- Prior art keywords
- resin foam
- vinyldene chloride
- insulation
- vessel
- chloride resin
- 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.)
- Withdrawn
Links
Landscapes
- Refrigerator Housings (AREA)
- Thermally Insulated Containers For Foods (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】保温保冷用、インスタント食品用
の断熱容器に関する。[Industrial application] The present invention relates to a heat insulating container for keeping heat and cold and for instant food.
【０００２】[0002]
【従来の技術】従来、断熱容器の断熱材は、ビーズ発泡
用ポリスチレン（以下、ＥＰＳと略する）を使用し、型
内成形法により成形している。しかしながら、ＥＰＳの
成形方法は型内成形法であるため、複雑な成形体の成形
はできるが、熱伝導率が高く、力学的物性が低いため、
成形肉厚を薄くすることができない。ＥＰＳの熱伝導率
は成形品密度３５ｋｇ／ｍ3 で、０．０２８ｋｃａｌ／
ｍ・ｈ・℃（０℃の値）である。保温保冷用断熱箱の内
容積を広くするため薄肉化すると断熱性能が低いため、
熱効率が悪くなる。2. Description of the Related Art Conventionally, as a heat insulating material for a heat insulating container, polystyrene for bead foaming (hereinafter abbreviated as EPS) is used and molded by an in-mold molding method. However, since the EPS molding method is an in-mold molding method, a complicated molded body can be molded, but since the thermal conductivity is high and the mechanical properties are low,
The molding thickness cannot be reduced. The thermal conductivity of EPS is 0.028 kcal / in a molded product density of 35 kg / m 3.
m · h · ° C (value at 0 ° C). Since the heat insulation performance is low when the wall thickness is reduced in order to widen the internal volume of the heat insulation and heat insulation box,
Thermal efficiency becomes poor.
【０００３】[0003]
【発明が解決しようとする課題】薄肉で断熱性能にすぐ
れる断熱容器を提供するものである。[PROBLEMS TO BE SOLVED BY THE INVENTION] The present invention provides a heat insulating container which is thin and has excellent heat insulating performance.
【０００４】[0004]
【課題を解決すべき手段】本発明は塩化ビニリデン系樹
脂発泡体を使用する断熱容器である。塩化ビニリデン系
樹脂発泡体の熱伝導率は、成形密度に依存するため、必
要な熱伝導性を自由に選択することができる。例えば、
発泡剤としてモノクロロジフルオロエタンを用いて、成
形密度を４０ｋｇ／ｍ3 に調整すれば、熱伝導率が０．
０１９ｋｃａｌ／ｍ・ｈ・℃（０℃の値）の成形体がで
きる。また、塩化ビニリデン系樹脂発泡体は水蒸気透過
率が低く、力学的強度にすぐれるので、本願の用途に最
適である。The present invention is a heat insulation container using a vinylidene chloride resin foam. Since the thermal conductivity of the vinylidene chloride-based resin foam depends on the molding density, the required thermal conductivity can be freely selected. For example,
When monochlorodifluoroethane was used as the foaming agent and the molding density was adjusted to 40 kg / m 3 , the thermal conductivity was 0.
A molded product of 019 kcal / m · h · ° C (value of 0 ° C) is formed. Further, the vinylidene chloride-based resin foam has a low water vapor transmission rate and excellent mechanical strength, and is therefore most suitable for the application of the present application.
【０００５】塩化ビニリデン系樹脂発泡体とは、非晶質
の塩化ビニリデン共重合体に発泡剤を含浸したビーズ
を、予備発泡後、型内成形により得られる発泡成形体を
言う。非晶質の塩化ビニリデン共重合体とは、塩化ビニ
リデンが３０重量％以上、８５重量％以下、共重合可能
なモノマ−が１５重量％以上、７０重量％以下からなる
共重合体である。塩化ビニリデンが３０重量％未満であ
ると、発泡剤の保持性が低下し、熱伝導率が高くる。８
５重量％を越えると塩化ビニリデン共重合体は、結晶性
となり発泡性が低下する。The vinylidene chloride resin foam is a foamed molded product obtained by pre-foaming beads obtained by impregnating an amorphous vinylidene chloride copolymer with a foaming agent, followed by in-mold molding. The amorphous vinylidene chloride copolymer is a copolymer containing 30% by weight or more and 85% by weight or less of vinylidene chloride and 15% by weight or more and 70% by weight or less of a copolymerizable monomer. If the vinylidene chloride content is less than 30% by weight, the retention of the foaming agent will be reduced and the thermal conductivity will be high. 8
If it exceeds 5% by weight, the vinylidene chloride copolymer becomes crystalline and the foamability is lowered.
【０００６】共重合可能なモノマ−としては塩化ビニ
ル、（メタ）アクリロニトリル、スチレン、α−メチル
スチレン、およびアクリル酸メチルといったアクリル酸
エステル類、メタアクリル酸メチルといったメタアクリ
ル酸エステル類、Ｎ−フェニルマレイミドといったＮ−
置換マレイミド等が挙げられる。これらは単独、もしく
は２種以上を組み合わせて用いてもよい。The copolymerizable monomers include vinyl chloride, (meth) acrylonitrile, styrene, α-methylstyrene, acrylic acid esters such as methyl acrylate, methacrylic acid esters such as methyl methacrylate, N-phenyl. N- such as maleimide
Substituted maleimide and the like can be mentioned. You may use these individually or in combination of 2 or more types.
【０００７】また、塩化ビニリデン共重合体を架橋構造
にしてもよい。架橋構造を持たせると発泡体の独立気泡
に富み、発泡成形性は向上する。架橋剤としては、ジビ
ニルベンゼン、ネオペンチルグリコールジ（メタ）アク
リレート、１．６−ヘキサンジ（メタ）アクレリート、
エチレングリコール系ジ（メタ）アクリレート、プロピ
レングリコール系ジ（メタ）アクリレート等を挙げるこ
とができる。The vinylidene chloride copolymer may have a crosslinked structure. The crosslinked structure makes the foam rich in closed cells and improves the foam moldability. Examples of the cross-linking agent include divinylbenzene, neopentyl glycol di (meth) acrylate, 1.6-hexanedi (meth) acrylate,
Examples thereof include ethylene glycol di (meth) acrylate and propylene glycol di (meth) acrylate.
【０００８】重合方法としては公知の重合方法、例えば
懸濁重合、乳化重合、溶液重合、塊状重合等の中から任
意の方法を用いて製造することができる。重合開始剤と
しては公知のラジカル開始剤が使用できる。発泡剤とし
ては、例えばプロパン、ブタン、イソブタン、ペンタン
等の脂肪族炭化水素類、塩化メチル、塩化エチル、塩化
メチレン等の塩素化炭化水素類、モノクロロジフルオロ
エタン、トリフロロエタン、ジフロロエタン、ジクロロ
トリフロロエタン、１，１−ジクロロ−１フロロエタ
ン、２，２−ジクロロ−１，１，１トリフロロエタン、
１，１，１，２−テトラフロロエタン等のフッ素化炭化
水素類およびこれらの混合物が使用できる。The polymerization can be carried out by any known method such as suspension polymerization, emulsion polymerization, solution polymerization and bulk polymerization. A known radical initiator can be used as the polymerization initiator. Examples of the foaming agent include aliphatic hydrocarbons such as propane, butane, isobutane and pentane, chlorinated hydrocarbons such as methyl chloride, ethyl chloride and methylene chloride, monochlorodifluoroethane, trifluoroethane, difluorochloroethane, dichlorotrifluoroethane. , 1,1-dichloro-1 fluoroethane, 2,2-dichloro-1,1,1 trifluoroethane,
Fluorinated hydrocarbons such as 1,1,1,2-tetrafluoroethane and mixtures thereof can be used.
【０００９】以上の塩化ビニリデン系樹脂発泡体は、例
えば、特公昭６３−３３７８１号、特公昭６３−３３７
８２号、特開昭６３−１７０４３５号および特願平２−
１９９１２５号に記載されている。発泡成形体を得る方
法としては、公知の型内発泡成形法を使用するとよい。
まず、発泡剤を含有した樹脂粒子を蒸気、熱水、熱風等
の加熱媒体で加熱することにより予備発泡させ、多泡質
発泡粒子を得る。加熱する条件としては、目標とする発
泡倍率に応じて選択される。次に、目的に応じた金型内
にこの多泡質発泡粒子を充填し、水蒸気等により加熱す
ることにより発泡成形体を得る。The above vinylidene chloride resin foams are disclosed, for example, in Japanese Examined Patent Publication Nos. 63-33781 and 63-337.
82, JP-A-63-170435 and Japanese Patent Application No. 2-
No. 199125. As a method for obtaining a foam molded article, a known in-mold foam molding method may be used.
First, resin particles containing a foaming agent are pre-expanded by heating with a heating medium such as steam, hot water, or hot air to obtain multi-foam expanded particles. The heating conditions are selected according to the target expansion ratio. Next, a foamed molded article is obtained by filling the foamed expanded beads in a mold according to the purpose and heating with steam or the like.
【００１０】本発明の低熱伝導率の塩化ビニリデン系樹
脂発泡体を用いた断熱容器においては、同一厚みのＥＰ
Ｓ成形体に比べて熱効率を上げることができるため、保
温保冷を長期間保つことができる。また、水蒸気透過率
も低いため、内容物を長期間保存できる。型内成形法で
あるため、非常に複雑な部位の成形体を作ることができ
る。ＥＰＳに比べると接着剤の制限が少ないため、得ら
れた断熱体をＡＢＳ、ＰＰ、ＰＳ等の合成樹脂の外箱に
組み込み、接着剤により張り合せることができるため、
二次加工が容易にできるため、多種多様の要求に応じら
れる。In the heat insulating container using the low thermal conductivity vinylidene chloride resin foam of the present invention, the EP having the same thickness is used.
Since the thermal efficiency can be increased as compared with the S molded body, it is possible to keep the heat retention and cooling for a long time. Further, since the water vapor transmission rate is low, the contents can be stored for a long time. Since it is an in-mold molding method, it is possible to form a molded body having a very complicated portion. Since the adhesive is less restricted than EPS, the heat insulator obtained can be incorporated into an outer box of synthetic resin such as ABS, PP, PS, etc.
Since secondary processing is easy, it can meet a wide variety of requirements.
【００１１】型内成形法であるため、非常に複雑な部位
の成形体を作ることができる。ＥＰＳに比べると接着剤
の制限が少ないため、得られた断熱体をＡＢＳ、ＰＰ、
ＰＳ等の合成樹脂の外箱に組み込み、接着剤により張り
合わせることができるため、製造法が大幅に合理化でき
る。なお、本発明で使用した物性値は以下の評価方法に
より測定した値を示している。Since it is the in-mold molding method, it is possible to manufacture a molded body having a very complicated portion. Compared to EPS, there are less restrictions on adhesives, so the obtained heat insulator is made of ABS, PP,
Since it can be attached to an outer box of synthetic resin such as PS and attached with an adhesive, the manufacturing method can be greatly streamlined. The physical property values used in the present invention are values measured by the following evaluation methods.
【００１２】 ・成形密度：ＪＩＳ−Ｋ−６７６７に基づく。 ・熱伝導率：ＡＳＴＭ Ｄ−５１８に基づく。 ・圧縮強度：ＡＳＴＭ Ｄ−１６２１に基づき、圧縮歪
みを５％として求めた。 ・曲げ強度：ＪＩＳ−Ａ−９５１１に基づく。Molding density: Based on JIS-K-6767. -Thermal conductivity: Based on ASTM D-518. -Compressive strength: Based on ASTM D-1621, the compressive strain was determined to be 5%. Bending strength: Based on JIS-A-9511.
【００１３】[0013]
【実施例】以下本発明の塩化ビニリデン系樹脂発泡体を
用いた断熱容器を図１、２をもとに説明する。EXAMPLES A heat insulating container using the vinylidene chloride resin foam of the present invention will be described below with reference to FIGS.
【００１４】[0014]
【実施例１】図１は本発明の断熱材を使用した断熱容器
を示している。また、図２はボトルの断熱として用いた
断熱容器を示している。各部分の断熱材は各々型内成形
により成形する。表１にＥＰＳとの物性比較表を示し
た。圧縮強度、曲げ強度は、ＥＰＳより高い。Example 1 FIG. 1 shows a heat insulating container using the heat insulating material of the present invention. Further, FIG. 2 shows a heat insulating container used as heat insulating for a bottle. The heat insulating material of each part is molded by in-mold molding. Table 1 shows a physical property comparison table with EPS. Compressive strength and bending strength are higher than EPS.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【発明の効果】本発明は、断熱容器に、型内成形の可能
な、かつ熱伝導率の低い塩化ビニリデン系樹脂発泡体を
使用することにより、熱効率を上げ、保温保冷を長期間
保つことができる。また、複雑な断熱容器の成形もでき
る。INDUSTRIAL APPLICABILITY According to the present invention, by using a vinylidene chloride resin foam capable of in-mold molding and having a low thermal conductivity in a heat insulating container, it is possible to improve the thermal efficiency and keep it warm and cool for a long time. it can. Also, a complicated heat insulating container can be formed.
【図１】本発明の断熱容器の模式図。FIG. 1 is a schematic view of a heat insulating container of the present invention.
【図２】本発明のボトル用断熱容器の模式図。FIG. 2 is a schematic view of a heat insulating container for bottles of the present invention.
１ 塩化ビニリデン系樹脂発泡体 ２ ボトル 1 Vinylidene chloride resin foam 2 bottles
Claims (1)
断熱容器1. A heat insulating container using a vinylidene chloride resin foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25795791A JPH0595842A (en) | 1991-10-04 | 1991-10-04 | Insulation vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25795791A JPH0595842A (en) | 1991-10-04 | 1991-10-04 | Insulation vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0595842A true JPH0595842A (en) | 1993-04-20 |
Family
ID=17313562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25795791A Withdrawn JPH0595842A (en) | 1991-10-04 | 1991-10-04 | Insulation vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0595842A (en) |
-
1991
- 1991-10-04 JP JP25795791A patent/JPH0595842A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990107 |