JPH1177907A - Sheet laminated structure and its molding - Google Patents
Sheet laminated structure and its moldingInfo
- Publication number
- JPH1177907A JPH1177907A JP25596297A JP25596297A JPH1177907A JP H1177907 A JPH1177907 A JP H1177907A JP 25596297 A JP25596297 A JP 25596297A JP 25596297 A JP25596297 A JP 25596297A JP H1177907 A JPH1177907 A JP H1177907A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- laminated structure
- fabric
- paper
- layer
- 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
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、容器等の成形品に
断熱性、軽量性、割れにくさ等の機能を付与すべく製造
したシート状積層構造物、及びそのシート状積層構造物
を成形して得られる積層構造成形品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like laminated structure manufactured to provide a molded article such as a container with functions such as heat insulation, light weight, and resistance to cracking. The present invention relates to a laminated structure molded product obtained by the above method.
【０００２】[0002]
【従来の技術】従来の容器等の成形品は、断熱性に劣る
ため、内容物を入れた状態で加熱した時、容器等の成形
品自身が高熱でハンドリングが不自由である。そのため
例えば電子レンジで加熱した食品の容器を素手で取り出
すことができない。2. Description of the Related Art Conventional molded articles such as containers are inferior in heat insulating properties. Therefore, when heated in a state in which contents are contained, the molded articles such as containers themselves are high in heat and are difficult to handle. Therefore, for example, a food container heated by a microwave cannot be taken out with bare hands.
【０００３】また、発泡したシートから得られる容器等
の成形品、あるいは成形時発泡して得られる容器等の成
形品は断熱性を有するが、その発泡技術故に複雑な製造
工程となり、生産性が良いとは言えない。また、成形品
全体に泡が分布しているため、高温調理後割れやすく、
内容物の重さで変形しやすいという欠点がある。Further, molded articles such as containers obtained from foamed sheets, or molded articles such as containers obtained by foaming during molding have heat insulation properties, but the foaming technique requires a complicated manufacturing process, resulting in low productivity. Not good. In addition, since foam is distributed throughout the molded product, it is easy to crack after high-temperature cooking,
There is a disadvantage that the content is easily deformed due to the weight of the content.
【０００４】さらに、紙容器は、高温調理に耐えるため
マフィンやスポンジケーキなどの容器として広く採用さ
れているが、水分の吸湿による紙容器そのものの膨潤変
形の欠点がある。Further, paper containers are widely used as containers for muffins, sponge cakes and the like in order to withstand high-temperature cooking, but have the drawback of swelling deformation of the paper containers themselves due to moisture absorption.
【０００５】[0005]
【発明が解決しようとする課題】近年の冷凍食品技術の
向上から、消費者は調理済冷凍食品を電子レンジで加熱
しただけで食べられる食生活に進む傾向にある。この
時、冷凍食品は別の容器に移し替えることなく電子レン
ジ加熱できる耐熱容器はたいへん便利であり、容器の断
熱性の付与は当然の要望である。更に、冷凍食品の輸送
中の容器の割れによる破損は経済的に大きな損失であ
り、解決されるべきである。With the recent improvement in frozen food technology, consumers have tended to proceed to a dietary life in which cooked frozen foods can be eaten only by heating them in a microwave oven. At this time, a heat-resistant container that can be heated in a microwave oven without transferring the frozen food to another container is very convenient, and it is a natural need to provide the container with heat insulation. Further, breakage due to cracking of containers during the transportation of frozen food is a significant economic loss and should be resolved.
【０００６】本発明は、かかる従来技術の現状に鑑み創
案されたものであり、その目的は、断熱性があり、割れ
にくい、軽量の耐熱性成形品を生産性良く得るためのシ
ート状積層構造物を提供することにある。The present invention has been made in view of the state of the prior art, and has as its object to provide a sheet-like laminated structure for obtaining a light-weight heat-resistant molded article having heat insulation, resistance to cracking, and good productivity. To provide things.
【０００７】[0007]
【課題を解決するための手段】本発明者はかかる目的を
達成するために前記機能を有するシート状積層構造物に
ついて鋭意検討した結果、本発明の完成に到達した。即
ち、本発明は実質的未延伸の熱可塑性樹脂シートからな
る層、及び不織布又は多孔質状の空隙を持った布、紙も
しくは樹脂シートから選択された少なくとも一つからな
る層を有することを特徴とするシート状積層構造物であ
る。Means for Solving the Problems In order to achieve the above object, the present inventors have intensively studied a sheet-like laminated structure having the above-mentioned function, and as a result, have completed the present invention. That is, the present invention is characterized by having a layer made of a substantially unstretched thermoplastic resin sheet and a layer made of at least one selected from a nonwoven fabric or a cloth having porous voids, paper or a resin sheet. It is a sheet-like laminated structure.
【０００８】[0008]
【発明の実施の形態】本発明で使用される実質的未延伸
のシートの厚みは特に限定しないが、好ましくは０．０
２ｍｍ〜０．８０ｍｍのものが用いられる。また、実質
的未延伸のシートの材質は熱可塑性の樹脂であれば、ポ
リエステル、ポリプロピレン、ポリスチレン、ポリ塩化
ビニルなどいずれのものでも良く、共重合物であった
り、着色剤、結晶核剤などの有機や無機の添加剤を含ん
でも差し支えない。DESCRIPTION OF THE PREFERRED EMBODIMENTS The thickness of the substantially unstretched sheet used in the present invention is not particularly limited, but is preferably 0.0
Those having a size of 2 mm to 0.80 mm are used. Further, if the material of the substantially unstretched sheet is a thermoplastic resin, it may be any of polyester, polypropylene, polystyrene, polyvinyl chloride and the like, and may be a copolymer, a coloring agent, a crystal nucleating agent, etc. Organic or inorganic additives may be included.
【０００９】本発明で使用される不織布又は多孔質状の
空隙を持った布、紙もしくはシートの厚みは特に限定し
ないが、好ましくは１００ｇ／ｍ2〜５００ｇ／ｍ2で表
現される厚みのものが用いられる。また、材質は前述の
実質的未延伸のシートと同じ材質の、多種多様の組合せ
を用いることができ、セルロースパルプのような異なっ
た材質のものを組合せることができる。[0009] The present invention fabric having a nonwoven fabric or porous voids as used, the thickness of the paper or sheet is not particularly limited, but preferably the thickness is represented by 100g / m 2 ~500g / m 2 Is used. Also, as the material, a wide variety of combinations of the same material as the above-mentioned substantially unstretched sheet can be used, and different materials such as cellulose pulp can be combined.
【００１０】本発明のシート状積層構造物は、１層が実
質的未延伸のシートからなり、別の層の少なくとも一つ
が不織布又は多孔質状の空隙を持った布、紙もしくはシ
ート等からなるが、接着剤を用いて両者を貼り合わせる
方法でも、溶融押出時に不織布側を冷却ロールに沿わせ
る等して溶融押出したシート状の樹脂を貼り合わせる方
法でも、加熱カレンダーロール上で両者を熱接着させる
方法でも本発明の積層構造物は得ることができる。In the sheet-like laminated structure of the present invention, one layer is composed of a substantially unstretched sheet, and at least one of the other layers is composed of a nonwoven fabric or a cloth, paper or sheet having porous voids. However, both methods of bonding both using an adhesive, and methods of bonding a sheet-like resin that has been melt-extruded by, for example, making the nonwoven fabric side along a cooling roll at the time of melt-extrusion, and thermally bonding the two on a heated calender roll The laminated structure of the present invention can also be obtained by the above method.
【００１１】本発明の積層構造物は、前述のように片側
が実質的未延伸のシートで他の片側が不織布又は多孔質
状の空隙を持った布、紙もしくはシートを含む層となる
構造にでも、内層が不織布又は多孔質状の空隙を持った
布、紙もしくはシートを含む層でその両外層が実質的未
延伸のシートとなる構造にでも、不織布又は多孔質状の
空隙を持った布、紙もしくはシートを含む層と実質的未
延伸のシートを交互に多層に組合せる構造にでも形成す
ることができる。As described above, the laminated structure of the present invention has a structure in which one side is a substantially unstretched sheet and the other side is a layer containing a nonwoven fabric or a cloth, paper or sheet having a porous void. However, even if the inner layer is a nonwoven fabric or a cloth having porous voids, or a layer containing paper or sheet and both outer layers are substantially unstretched sheets, the nonwoven fabric or the cloth having porous voids It can also be formed in a structure in which a layer containing paper or a sheet and a substantially unstretched sheet are alternately combined in a multilayer.
【００１２】本発明のシート状積層構造物は、通常の真
空成形機では型決まりが不充分である以外は、プラグア
シスト真空成形機、圧空真空成形機、圧空成形機、雄雌
金型真空成形機、プレス成形機等で容易に容器等の積層
構造成形品に成形することができる。本発明の積層構造
成形品としては、トレイ、どんぶり容器、カップ、焼き
菓子用マフィン等が例示される。なお、製造したシート
状積層構造物、及びそのシート状積層構造物を成形して
得られる積層構造成形品に印刷を施すことも可能であ
る。[0012] The sheet-shaped laminated structure of the present invention is a plug-assist vacuum forming machine, a pneumatic vacuum forming machine, a pneumatic forming machine, and a male and female mold vacuum forming, except that the normal vacuum forming machine has insufficient molding rules. It can be easily formed into a laminated structure molded article such as a container by a press, a press molding machine or the like. Examples of the laminated structure molded product of the present invention include trays, bowls, cups, muffins for baked confectionery, and the like. In addition, it is also possible to print on the manufactured sheet-shaped laminated structure and the laminated structure molded product obtained by molding the sheet-shaped laminated structure.
【００１３】[0013]
【実施例】本発明を以下の実施例により説明するが、本
発明はこれらに限定されるものではない。The present invention will be described with reference to the following examples, but the present invention is not limited to these examples.
【００１４】実施例 １ 結晶核剤を含有するポリエステルをＴダイから０．２５
ｍｍ厚みに溶融押出ししながら、冷却ロールに２２０ｇ
／ｍ2 目付のポリエステル不織布を沿わせて熱ラミシー
トを得た。更にこの熱ラミシートを反転して冷却ロール
に沿わせて、Ｔダイから０．２０ｍｍ厚みに溶融押出し
た結晶核剤を含有するポリエステルとで、両外層が実質
的未延伸のシートで内層が不織布の構造であるシート状
積層構造物１を得た。なお、外層と内層の接着を容易に
するためにタッチロール付き冷却装置を使用した。Example 1 A polyester containing a nucleating agent was prepared from a T-die through 0.25.
220g to the cooling roll while melt extruding to a thickness of
/ M 2 A heat-laminated sheet was obtained by laying a nonwoven polyester nonwoven fabric along the basis weight. Further, the heat laminating sheet is turned over and placed along a cooling roll, and a polyester containing a crystal nucleating agent melt-extruded to a thickness of 0.20 mm from a T-die is used. A sheet-like laminated structure 1 having a structure was obtained. Note that a cooling device with a touch roll was used to facilitate the adhesion between the outer layer and the inner layer.
【００１５】シート状積層構造物１を予熱後、プラグア
シスト真空成形機で結晶化と成形を同時処理して、耐熱
Ｃ−ＰＥＴトレイを作成した。このトレイの特性を従来
の単層Ｃ−ＰＥＴトレイの特性とともに表−１に示す。After the sheet-like laminated structure 1 was preheated, crystallization and molding were simultaneously performed by a plug-assist vacuum forming machine to prepare a heat-resistant C-PET tray. Table 1 shows the characteristics of the tray together with the characteristics of the conventional single-layer C-PET tray.
【００１６】[0016]
【表１】 [Table 1]
【００１７】実施例 ２ 結晶核剤を含有するポリエステルの０．０８ｍｍ厚みシ
ートに３５ｇ／ｍ2 目付のクラシンペーパーを接着剤で
貼り合わせてシート状積層構造物２を得た。更にこのシ
ート状積層構造物２を１８０℃の熱板プレス機で、ポリ
エステルの結晶化度が８〜１２％になるように処理をし
たのち、ポリエステル層が内側になるプリーツ容器を得
た。プリーツ容器に加工する際、加熱処理をしてポリエ
ステル層の結晶化度が２５％以上になるようにした。Example 2 Classine paper having a basis weight of 35 g / m 2 was bonded to a 0.08 mm thick sheet of polyester containing a crystal nucleating agent with an adhesive to obtain a sheet-like laminated structure 2. Further, the sheet-like laminated structure 2 was treated with a hot plate press at 180 ° C. so that the crystallinity of the polyester became 8 to 12%, and then a pleated container having a polyester layer inside was obtained. When processing into a pleated container, heat treatment was performed so that the crystallinity of the polyester layer was 25% or more.
【００１８】このように、ポリエステル層の結晶化度が
２５％以上のシート状積層構造物２から得られたプリー
ツ容器は、以下の耐熱性を示した。 容器にサラダ油を入れ、電子レンジ（高周波出力６０
０Ｗ）で７分間加熱して、サラダ油温度が２２０℃を越
えても容器の外観変化が認められなかった。 容器にサラダ油を入れ、ヒーター出力１．２ＫＷの電
熱式オーブン中で２２０℃×１時間の処理を行ったが、
容器の外観変化は認められなかった。As described above, the pleated container obtained from the sheet-like laminated structure 2 in which the crystallinity of the polyester layer is 25% or more exhibited the following heat resistance. Put the salad oil in a container, microwave (high frequency output 60
(0W) for 7 minutes, and no change in the appearance of the container was observed even when the salad oil temperature exceeded 220 ° C. The salad oil was put in a container, and the treatment was performed at 220 ° C. × 1 hour in an electric oven having a heater output of 1.2 kW.
No change in the appearance of the container was observed.
【００１９】実施例 ３ ポリエステルをＴダイから０．２０ｍｍ厚みに溶融押出
ししながら、冷却ロールに１２０ｇ／ｍ2 目付のポリエ
ステル不織布を沿わせて熱ラミシートを得た。更にこの
熱ラミシートを反転して冷却ロールに沿わせて、Ｔダイ
から０．２０ｍｍ厚みに溶融押出したポリエステルと
で、両外層が実質的未延伸のシートで内層が不織布の構
造であるシート状積層構造物３を得た。[0019] While melt extrusion EXAMPLE 3 polyester 0.20mm thickness from a T-die to obtain a heat Ramishito by along the 120 g / m 2 basis weight of nonwoven polyester fabric with a cooling roll. Further, the heat laminating sheet is turned over, and the melted extruded polyester having a thickness of 0.20 mm from a T-die is formed along with a cooling roll. Both outer layers are substantially unstretched sheets, and the inner layer is a nonwoven fabric. Structure 3 was obtained.
【００２０】シート状積層構造物３を３０ｃｍ×３０ｃ
ｍに切断し、１．５ｍの高さから床に落下させたが、何
ら割れは認められなかった。シート状積層構造物３をシ
ート状のまま、所定の寸法に切断し、所謂、カット版に
して割れにくさの特徴を生かして、ガラス代替品として
家具の部品に使用した。The sheet-like laminated structure 3 is 30 cm × 30 c
m and dropped on the floor from a height of 1.5 m, but no cracks were observed. The sheet-like laminated structure 3 was cut into a predetermined size while keeping the sheet-like shape, and was used as a so-called cut plate to take advantage of the difficulty of breaking, and used as a glass replacement as a part of furniture.
【００２１】[0021]
【発明の効果】以上詳述したように、本発明のシート状
積層構造物は、耐熱性があり、割れにくく、軽量のた
め、様々な成形品への応用が可能である。As described in detail above, the sheet-like laminated structure of the present invention has heat resistance, is hard to crack, and is lightweight, so that it can be applied to various molded products.
Claims (2)
なる層、及び不織布又は多孔質状の空隙を持った布、紙
もしくは樹脂シートから選択された少なくとも一つから
なる層を有することを特徴とするシート状積層構造物。1. A layer comprising a layer of a substantially unstretched thermoplastic resin sheet and a layer of at least one selected from a nonwoven fabric or a cloth having porous voids, paper or a resin sheet. And a sheet-like laminated structure.
物を成形して得られることを特徴とする積層構造成形
品。2. A molded article having a laminated structure obtained by molding the sheet-shaped laminated structure according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25596297A JP4016463B2 (en) | 1997-09-03 | 1997-09-03 | Sheet laminated structure and molded product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25596297A JP4016463B2 (en) | 1997-09-03 | 1997-09-03 | Sheet laminated structure and molded product thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1177907A true JPH1177907A (en) | 1999-03-23 |
| JP4016463B2 JP4016463B2 (en) | 2007-12-05 |
Family
ID=17286004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25596297A Expired - Fee Related JP4016463B2 (en) | 1997-09-03 | 1997-09-03 | Sheet laminated structure and molded product thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4016463B2 (en) |
-
1997
- 1997-09-03 JP JP25596297A patent/JP4016463B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4016463B2 (en) | 2007-12-05 |
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