JPS63111032A - Deep draw packing method - Google Patents
Deep draw packing methodInfo
- Publication number
- JPS63111032A JPS63111032A JP25579386A JP25579386A JPS63111032A JP S63111032 A JPS63111032 A JP S63111032A JP 25579386 A JP25579386 A JP 25579386A JP 25579386 A JP25579386 A JP 25579386A JP S63111032 A JPS63111032 A JP S63111032A
- Authority
- JP
- Japan
- Prior art keywords
- film
- heating plate
- plate
- molding
- vacuum
- 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
- 238000000034 method Methods 0.000 title claims description 24
- 238000012856 packing Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 54
- 238000000465 moulding Methods 0.000 claims abstract description 33
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 6
- 238000009461 vacuum packaging Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 3
- 235000013580 sausages Nutrition 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 235000013622 meat product Nutrition 0.000 description 2
- 238000007789 sealing 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
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、主としてスライスハム、ソーセージ等の包装
に用いられる深絞シ真空・圧空包装法に関する。更に詳
しくは、スライスハム、ソーセージ等の食品の深絞シ包
装において商品の外観上、問題となる成形されたフィル
ム表面の雨滴状の斑点、いわゆる「レインドロップ現象
」を解消できる深絞シ真空・圧空包装法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deep-draw vacuum/pressure packaging method used mainly for packaging sliced ham, sausages, etc. More specifically, we have developed a deep-drawing vacuum cleaner that can eliminate the so-called "raindrop phenomenon," which is the appearance of raindrops on the surface of the formed film, which is a problem when it comes to deep-drawn packaging of foods such as sliced ham and sausages. Concerning air pressure packaging method.
熱可塑性プラスチックフィルムを上部加熱板の表面に真
空で吸引して密着させてフィルムを予熱し、次いで下部
の凹状成形金型内にフィルムを真空あるいは圧空で賦形
し、次いで、内容物を凹状成形品内に充填し、内部を真
空に引きながら凹状成形品のフランジ部上から別のプラ
スチックフィルムでヒートシールする深絞シ真空包装法
は、スライスレ・ム等の血装法として広く知られている
。The thermoplastic film is vacuum-adhered to the surface of the upper heating plate to preheat it, then the film is formed into the lower concave mold using vacuum or compressed air, and the contents are then molded into the concave shape. The deep drawing vacuum packaging method, in which the product is filled and the inside is evacuated while heat-sealing with another plastic film over the flange of the concave molded product, is widely known as the blood-packing method such as slice rem. .
この包装法において、上部加熱板の表面は平板状であ）
、平らな加熱板の表面に多数、明けられた小孔から真空
で吸引することによって、フィルムを加熱板表面に密着
させ、フィルムを予熱する。In this packaging method, the surface of the upper heating plate is flat)
The film is brought into close contact with the surface of the heating plate by vacuum suction through a large number of small holes formed on the surface of the flat heating plate, and the film is preheated.
ところが、フィルムは必ずしも加熱板の表面に均一には
密着せず、その為、フィルムの予熱が不均一になり、こ
の予熱が不均一なフィルムを次の真空・圧空成形工程で
凹状金型の表面に成形すると、フィルムの伸びの不均一
に由来する直径数■乃至ｌＯ数数種程度円形乃至楕円形
の雨滴状の多数の斑点が成瘉されたフィルムの表面に残
る。この雨滴状の斑点、いわゆる「レインドロップ現象
」は従来、根本的な解決策がなく、低めのフィルム予熱
温度、多層フィルムの層構成の工夫、加熱板表面の弗素
樹脂加工による滑多性の向上、加熱板の真空孔の数を出
来るだけ多くする等の対策が取られてきたが、いずれも
根本的な解決策とはならなかった。However, the film does not necessarily adhere uniformly to the surface of the heating plate, resulting in uneven preheating of the film, and the film with uneven preheating is transferred to the surface of the concave mold in the next vacuum/pressure forming process. When the film is formed into a film, many raindrop-shaped spots with a diameter of several inches to several inches are left on the surface of the formed film due to non-uniform elongation of the film. Until now, there has been no fundamental solution to this raindrop-like spot, the so-called "raindrop phenomenon," and improvements in lubricity can be achieved by lowering the film preheating temperature, devising the layer structure of the multilayer film, and treating the surface of the heating plate with fluororesin. Countermeasures have been taken, such as increasing the number of vacuum holes in the heating plate as much as possible, but none of them have been a fundamental solution.
加熱板の温度を低くすると、レインドロップの数は少な
くなるが、成形品の型忠実度が悪くなシ、成形品のコー
ナ一部が甘くなル、丸味を帯びてくる。加熱板の温度を
高くして、フィルムの予熱を十分にすると成形品の型忠
実度は改善されるが、レインドロップの数が増え、内容
物を充填シールした後でも包装された商品の外観が著し
く損われる。％に透明フィルムで包装されるスライスハ
ム等の商品では、この外観不良は商品の価値を損うこと
になる。If the temperature of the heating plate is lowered, the number of raindrops will decrease, but the mold fidelity of the molded product will be poor, and some corners of the molded product will become soft and rounded. Increasing the temperature of the heating plate and preheating the film sufficiently will improve the mold fidelity of the molded product, but will increase the number of raindrops and affect the appearance of the packaged product even after filling and sealing the contents. Significantly damaged. For products such as sliced ham that are packaged in a transparent film, this poor appearance will reduce the value of the product.
レインドロップは加熱板で密着吸引し、予熱されたフィ
ルムの真空孔と真空孔との間に生じることが分かってい
る。そこで、フィルムの熱板への密着に真空の代わシに
フィルム上からの圧空を用いると全面の均一な密着が期
待されるが、実際には、フィルム全面にわたって、フィ
ルムの熱板への密着の不均一が起とシ、不規則な形の多
くのレインドロップが生じる。It is known that raindrops are generated between the vacuum holes of the preheated film due to close suction by the heating plate. Therefore, if compressed air from above the film is used instead of a vacuum to adhere the film to the hot plate, uniform adhesion over the entire surface is expected. This causes unevenness, resulting in many irregularly shaped raindrops.
本発明は、従来、解決できなかった深絞シ包装における
レインドロップ現象を根本的に解決せんとして研究した
結果、延伸しながらフィルムを予熱することによってレ
インドロップが少なくなるとの知見を得、この知見に基
づき、種々研究を進めて本発明を完成させるに至ったも
のである。The present invention was developed as a result of research aimed at fundamentally solving the raindrop phenomenon in deep-drawn packaging, which could not be resolved in the past, and obtained the knowledge that raindrops can be reduced by preheating the film while stretching. Based on this, various studies have been conducted and the present invention has been completed.
その目的とするところは、レインドロップ現象を生じる
ことなく型忠実度の良好な深絞シ真空包装法を提供する
ことにある。The objective is to provide a deep-draw vacuum packaging method that has good mold fidelity without causing the raindrop phenomenon.
本発明は、熱可塑性プラスチックフィルムの周辺部分を
上部の加熱板の外周部分と下部の成形ボックスの外周部
分との間で圧締し、大気の圧力差によりて、多数の小排
気孔を有する該加熱板の表面に密着させて成形可能温度
まで予熱し、次いで該成形ボックス内の凹状の成形型の
内面に周辺部を圧締された該フィルムの中央部を大気の
圧力差によりて密着させて賦形せしめ、次いで、内容物
を充填し、次いで、凹状に賦形された該フィルムの７ラ
ンジ部分の上面を蓋材のプラスチックフィルムで加熱密
封する深絞シ包装方法において、該加熱板の外周部分と
該成形ボックスの外周部分との間で圧締されたフィルム
の圧締面に対して、加熱板の板面の一部分又は全体がよ
り高い凹んだ位置にあるか、より低い突出した位置にあ
る加熱板を用いることを特徴とする深絞シ包装方法であ
る０
本発明において、熱可塑性プラスチックフィルムは、単
層乃至は多層のフィルムであシ、深絞り真空包装におい
ては、一般には、５０μｍ乃至２００μｍ程度の厚みの
フィルムが好ましい。スライスハム等の深絞シ包装では
、ｒＭ索ガスバリア性、防湿性、耐ピンホール性、透明
性、深絞シ成形性、ヒートシール性等の諸性能が要求さ
れるので、多層のフィルムが望ましい。酸素ガスバリア
性の高い樹脂としてぼり塩化ビニリデン、エチレン−酢
酸ビニル共重合体けん化物、テリアミド等の樹脂が用い
られ、これらの樹脂の層とアイオノマー樹脂、エチレン
−酢酸ビニル共重合体樹脂等とを組合わせた多層フィル
ムによって、スライスハム等の深絞シ包装に適した透明
なフィルムが得られる。In the present invention, the peripheral part of the thermoplastic film is compressed between the peripheral part of the upper heating plate and the peripheral part of the lower molding box, and the pressure difference in the atmosphere is used to compress the peripheral part of the thermoplastic film into a plastic film having a large number of small exhaust holes. The film is brought into close contact with the surface of a heating plate to be preheated to a moldable temperature, and then the central part of the film, whose peripheral part is pressed, is brought into close contact with the inner surface of the concave mold in the molding box by an atmospheric pressure difference. In the deep drawing packaging method, the upper surface of the 7-lung portion of the film shaped into a concave shape is heated and sealed with a plastic film as a lid material, and the outer periphery of the heating plate is A part or the entire plate surface of the heating plate is in a higher concave position or in a lower protruding position with respect to the clamping surface of the film clamped between the part and the outer peripheral part of the molding box. In the present invention, the thermoplastic film is a single-layer or multilayer film, and in deep-draw vacuum packaging, it is generally 50 μm thick. A film having a thickness of about 200 μm is preferable. For deep-draw packaging of sliced ham, etc., a multilayer film is desirable, as various performances such as rM-cord gas barrier properties, moisture resistance, pinhole resistance, transparency, deep-draw formability, and heat sealability are required. . Resins such as vinylidene chloride, saponified ethylene-vinyl acetate copolymer, and theramide are used as resins with high oxygen gas barrier properties, and layers of these resins are combined with ionomer resins, ethylene-vinyl acetate copolymer resins, etc. The combined multilayer film yields a transparent film suitable for deep-draw packaging of sliced ham and the like.
フィルムの予熱は多数の小排気孔を有する加熱板の板面
に密着させて行なう。本発明では、該加熱板の外周部分
と成形ボックスとの間で圧締されたフィルムの圧締面に
対して、加熱板の板面の一部分又は全体がより高い凹ん
だ位置にあるか、より低い突出した位置にある加熱板を
用いる。従来の深絞り真空包装では、フィルムの圧締面
と加熱板の板面とが殆ど同一平面にあるような構造の成
形装置を用いてきたが、本発明では、フィルムの圧締面
と加熱板の板面とが同一平面にない構造の成形装置を用
いる。The film is preheated by bringing it into close contact with the surface of a heating plate having a large number of small exhaust holes. In the present invention, a portion or the entire plate surface of the heating plate is located at a higher recessed position than the pressing surface of the film pressed between the outer peripheral portion of the heating plate and the forming box. Use a heating plate in a low, protruding position. In conventional deep-draw vacuum packaging, a forming device with a structure in which the pressing surface of the film and the surface of the heating plate are almost on the same plane has been used, but in the present invention, the pressing surface of the film and the heating plate Use a molding device with a structure in which the plate surface and the plate surface are not on the same plane.
以下、図によって更に詳しく説明する。A more detailed explanation will be given below with reference to the drawings.
第２図（ｃ） Ｋは、従来の深絞シ成形装置の一例を側
面図で示す。上部成形ボックス（１）に内蔵された加熱
板（２）の板面（３）はヒーター（４）で予め成形可能
温度に設定しておく。加熱板（２）には多数の小排気孔
（５）が設けられておシ、上部成形ボックス（１）の排
気孔（６）により、真空排気される。FIG. 2(c) K shows a side view of an example of a conventional deep drawing forming apparatus. The plate surface (3) of the heating plate (2) built into the upper molding box (1) is set in advance to a moldable temperature using a heater (4). The heating plate (2) is provided with a large number of small exhaust holes (5) and is evacuated through the exhaust holes (6) of the upper molded box (1).
フィルム（７）は、まず、上部成形ボックス（１）の下
端部（８）と下部成形ボックス（９）の上端部（１０）
との間で圧締され、次いで、フィルム（７）は加熱板（
２）の板面（３）に真空吸引されて、密着予熱され、次
いで下部成形ボックス（９）内の凹状成形型（１１）の
内面に沿りて真空あるいは圧空成形される。The film (7) is first applied to the lower end (8) of the upper molding box (1) and the upper end (10) of the lower molding box (9).
The film (7) is then pressed onto a heating plate (
It is vacuum-suctioned to the plate surface (3) of 2), closely preheated, and then vacuum- or pressure-formed along the inner surface of the concave mold (11) in the lower molding box (9).
フィルムの圧締面と加゛熱板（２）の板面（３）とが殆
ど同一の高さにある従来法の第２図（ｃ）の成形装置で
成形すると、フィルム（７）の板面（３）への密着が不
均一になシ、フィルム（７）の成形面に、第２図（ｄ）
に示すような多数のレインドロップ（１３）が形成され
る。When molded using the conventional molding apparatus shown in FIG. 2(c) in which the pressing surface of the film and the plate surface (3) of the heating plate (2) are almost at the same height, the plate of the film (7) If the adhesion to the surface (3) is uneven, the molding surface of the film (7) may have some defects as shown in Fig. 2(d).
A large number of raindrops (13) are formed as shown in FIG.
第１図（ａ）には、本発明の方法による成形装置の一例
を側面図で示す。本発明の方法では、加熱板（２）の板
面（３）がフィルム（７）の圧締面（１２）より高い窪
んだ位置にある。フィルム（７）を上部成形ボックス（
１）の下端部（８）と下部成形ボックス（９）の上端部
（１０）とで圧締し、次いで、フィルム（７）を真空吸
引して加熱板（２）の板面（３）へ密着させて、フィル
ム（７）を成形温度まで予熱する。FIG. 1(a) shows a side view of an example of a molding apparatus according to the method of the present invention. In the method of the invention, the plate surface (3) of the heating plate (2) is in a recessed position higher than the pressing surface (12) of the film (7). Place the film (7) into the upper molding box (
The lower end (8) of 1) and the upper end (10) of the lower molding box (9) are pressed together, and then the film (7) is vacuum-sucked onto the plate surface (3) of the heating plate (2). The film (7) is brought into close contact and preheated to the molding temperature.
本発明の方法では、フィルムの圧締面（１２）の高さよ
りも加熱板（２）の板面（３）がよプ高い窪んだ位置に
ある為、板面（３）に真空吸引されたフィルム（７）は
延伸され、フィルムに張力が掛かる。フィルムは張力の
掛かった状態で予熱され、熱膨張を起こすが、フィルム
の熱膨張による伸長弁は、フィルムの張力で吸収され、
フィルムは板面（３）の上へ弛みを生じることなしに、
全面均一に密着される。従って第１図（ｂ）に示すよう
にフィルム面にレインドロップが形成されない。In the method of the present invention, since the plate surface (3) of the heating plate (2) is in a recessed position that is much higher than the height of the film pressing surface (12), vacuum suction is applied to the plate surface (3). The film (7) is stretched and tension is applied to the film. The film is preheated under tension and undergoes thermal expansion, but the expansion valve due to the thermal expansion of the film is absorbed by the tension of the film.
The film does not sag above the plate surface (3).
Adheres evenly to the entire surface. Therefore, no raindrops are formed on the film surface as shown in FIG. 1(b).
第２図（ｃ）に示すような従来の成形装置では、フィル
ムの圧締面と加熱板の板面とが殆ど同一の高さにある為
、加熱板に接触しているフィルムに周辺から張力が掛か
らない。加熱され、熱膨張したフィルムは、既に真空吸
引によって加熱板の板面へ密着している為、フィルムの
逃げ場がなく、フィルムの弛みを生じ、フィルムが局所
的に凸状に゛なシ、この板面から浮いた凸状部は他の部
分に比べて加熱が不十分となシ、その為、成形品にレイ
ンドロップが形成される。In the conventional forming apparatus shown in Fig. 2(c), since the pressing surface of the film and the surface of the heating plate are almost at the same height, tension is applied to the film in contact with the heating plate from the periphery. does not apply. The heated and thermally expanded film is already in close contact with the surface of the heating plate due to vacuum suction, so there is no place for the film to escape, causing the film to loosen and cause the film to become locally convex. The convex portions floating above the plate surface are not heated sufficiently compared to other portions, and as a result, raindrops are formed on the molded product.
第１図（ａ）の本発明の方法による成形装置では、フィ
ルムの圧締面に対して加熱板の板面がより高い窪んだ位
置にある。周辺部を圧締されたフィルムが加熱板の板面
へ真空吸引されるとき、フィルムは延伸され、圧締面の
内側のフィルム全面に張力が掛かる。張力の掛かりた状
態でフィルムは加熱されるので、フィルムの熱膨張で生
じる弛みは張力で吸収され、結果的に加熱板に密着した
フィルムには浮きが生じることなく、フィルム全面にわ
たって均一に加熱される。その為、本発明の方法では、
成形品にレインドロップが発生しない。In the forming apparatus according to the method of the present invention shown in FIG. 1(a), the surface of the heating plate is in a recessed position higher than the pressing surface of the film. When the film whose peripheral portion has been pressed is vacuum-suctioned to the surface of the heating plate, the film is stretched and tension is applied to the entire surface of the film inside the pressing surface. Since the film is heated under tension, the slack caused by thermal expansion of the film is absorbed by the tension, and as a result, the film that is in close contact with the heating plate is heated uniformly over its entire surface without any lifting. Ru. Therefore, in the method of the present invention,
No raindrops occur on the molded product.
本発明の方法で成形品のレインドロップを防止するため
には、成形装置の上部成形ボックス、加熱板側を次のよ
うに設計するのが望ましい。In order to prevent raindrops on molded products using the method of the present invention, it is desirable to design the upper molding box and heating plate side of the molding apparatus as follows.
第１図（ａ）の成形装置において、上下の成形ボックス
の下端部と上端部とで圧締されたフィルムの圧締部の内
側のフィルム面積を常温（Ｔｏ）においてαいこのフィ
ルムに張力を掛けることなしに、成形温度（Ｔ）まで加
熱した後の同じフィルムの圧締部の内側の面積をαＴ１
上部成形ボックスの下端部の内側から加熱板の板面まで
の部分の全周にわたる表面積と加熱板の板面の面積とを
合わせた表面積、即ち、上下の成形ボックスの下端部と
上端部との間で圧締されたフィルムが加熱板に真空吸引
されて、延伸され、密着する上部成形ボックス側の凹部
の全表面積をＡとすると、レインドロップが生じない条
件は、Ａ≧α丁である。成形品のレインドロップを防止
する為には、上部成形ボックス内の加熱板の設置高さを
Ａ≧αＴを満足するように設置するのが望ましい。加熱
板への密着には真空を用いてもよいし、フィルム下面側
から加熱板側へ向かりて、圧空を掛けてもよい。In the forming apparatus shown in Fig. 1(a), the film area inside the pressing part of the film pressed between the lower end and the upper end of the upper and lower molding boxes is set to α at room temperature (To). αT1 is the inner area of the pressing part of the same film after heating to the forming temperature (T) without multiplication.
The total surface area of the area from the inside of the lower end of the upper molding box to the plate surface of the heating plate plus the surface area of the heating plate, that is, the surface area of the lower and upper ends of the upper and lower molding boxes. If the total surface area of the recess on the upper molding box side where the film pressed between the two is vacuum-suctioned by the heating plate, stretched, and brought into close contact with each other is A, then the condition under which raindrops do not occur is A≧α. In order to prevent raindrops on the molded product, it is desirable to install the heating plate in the upper molding box at a height that satisfies A≧αT. A vacuum may be used to bring the film into close contact with the heating plate, or compressed air may be applied from the lower surface of the film toward the heating plate.
フィルムは加熱板で予熱した後、凹状の成形型内へ深絞
シ成形される。深絞シ成形には真空を用ｌいてもよいし
、圧空を用いてもよい。内容物としては、特にスライス
ハム、ソーセージ等の肉製品、水産加工品等が好ましい
。レインドロップは特にスライスハム等の肉製品を包装
した時、外観上、問題となシやすい。After preheating the film with a hot plate, it is deep-drawn into a concave mold. A vacuum or compressed air may be used for deep drawing forming. Particularly preferable contents include meat products such as sliced ham and sausages, processed seafood products, and the like. Raindrops tend to cause problems in terms of appearance, especially when packaging meat products such as sliced ham.
〔発明の効果〕。〔Effect of the invention〕.
本発明の方法に従うと、深絞シ真空包装において、レイ
ンドロップが生じず、外観が良くて、型忠実度の良好な
深絞夛成形品を得ることができ、商品の外観を著しく高
めることが出来る。従来の方法よりも探絞シ成形の温度
幅を拡大することが出来、包装工程の品質安定化に役立
つ。According to the method of the present invention, it is possible to obtain a deep-drawn product with good appearance and mold fidelity without causing raindrops in deep-drawn vacuum packaging, thereby significantly improving the appearance of the product. I can do it. It is possible to expand the temperature range of the probe forming process compared to conventional methods, which helps stabilize the quality of the packaging process.
実施例
本発明の方法及び従来の方法により、深絞シ真空包装を
実施した。従来法として第２図（ｃ）の成形装置を用い
て、口径９５ｍ、深さ１５鴎の丸型の凹状成形品を成形
した。次いで、第１図（ａ）の成形装置を用いて、本発
明の方法により、同じ形状、寸法の丸型成形品を成形し
た。第１図（ａ）、第２図１（ｃ）の成形装置はいずれ
も加熱板の板面の寸法が３５０ｍＸ４５０■である。ｌ
ショットで４個の深絞シ成形品を成形することが出来る
。第２図（ｃ）の従来法の成形装置では、上部成形ボッ
クスの下端部のフィルム圧締面に対して加熱板の板面は
殆ど同一高さにあシ、僅かに２ｓｍ程度窪んだ位置に加
熱板の板面が設置されている。第１図（ａ）の本発明の
方法による成形装置では、フィルム圧締面に対して加熱
板の板面が１５−窪んだ位置に設置されている。板面が
１５ｍ窪んでいることによって、フィルムが加熱板の板
面に密着すると、圧締部の内側のフィルムは当初のフィ
ルム面積より約１５チ延伸されることになる。EXAMPLE Deep drawing vacuum packaging was carried out using the method of the present invention and a conventional method. As a conventional method, a round concave molded product with a diameter of 95 m and a depth of 15 m was molded using the molding apparatus shown in FIG. 2(c). Next, a round molded product having the same shape and dimensions was molded by the method of the present invention using the molding apparatus shown in FIG. 1(a). In both the molding apparatuses shown in FIG. 1(a) and FIG. 2(c), the dimensions of the heating plate surface are 350 m x 450 mm. l
Four deep-drawn products can be formed with one shot. In the conventional molding apparatus shown in Fig. 2(c), the surface of the heating plate is almost at the same height as the film pressing surface at the lower end of the upper molding box, and is slightly recessed by about 2 sm. The plate surface of the heating plate is installed. In the molding apparatus according to the method of the present invention shown in FIG. 1(a), the surface of the heating plate is installed at a position recessed by 15 degrees with respect to the film pressing surface. Since the plate surface is recessed by 15 m, when the film is brought into close contact with the plate surface of the heating plate, the film inside the clamping portion will be stretched by approximately 15 inches from the original film area.
深絞υ成形に用い九フィルムは、ＥＶＡ ７ ｙｔ ＋
）アミド／接着性ぎりオレフィン／ ＥＶＯＨがこの順
で配列された厚さ１５０μｍの透明性の良好なフィルム
である。ここで、ＥＶＡはエチレン−酢酸ビニル共重合
体樹脂、ＥＶＯ）Ｉはエチレン−酢酸ビニル共重合体け
ん化物樹脂である。The nine films used for deep drawing υ forming are EVA 7 yt +
) It is a 150 μm thick, highly transparent film in which amide/adhesive olefin/EVOH are arranged in this order. Here, EVA is an ethylene-vinyl acetate copolymer resin, and EVO)I is a saponified ethylene-vinyl acetate copolymer resin.
第１表には評価結果を示す。Table 1 shows the evaluation results.
第 １ 表
第１表に示すように、本発明の方法によって、深絞シ成
形品のレインドロップを全く無くすることが可能となり
た０Table 1 As shown in Table 1, the method of the present invention has made it possible to completely eliminate raindrops in deep drawn products.
第１図（ａ）には、本発明の方法によ仝成形装置の一例
を示す。
第１図（ｂ）には、レインドロップのない成形品の断面
図を示す。
第２図（ｃ）には、従来の深絞）成形装置の一例を側断
面図で示す。
第２図（ωには、レインドロップの形成された成形品の
断面図を示す。FIG. 1(a) shows an example of a molding apparatus according to the method of the present invention. FIG. 1(b) shows a cross-sectional view of a molded product without raindrops. FIG. 2(c) shows a side sectional view of an example of a conventional deep drawing forming apparatus. FIG. 2 (ω) shows a cross-sectional view of a molded product with raindrops formed thereon.
Claims (1)
板の外周部分と下部の成形ボックスの外周部分との間で
圧締し、大気の圧力差によって、多数の小排気孔を有す
る該加熱板の板面に密着させて成形可能温度まで予熱し
、次いで該成形ボックス内の凹状の成形型の内面に周辺
部を圧締された該フィルムの中央部を大気の圧力差によ
って密着させて賦形せしめ、次いで内容物を充填し、次
いで、凹状に賦形された該フィルムのフランジ部分の上
面を蓋材のプラスチックフィルムで加熱密封する深絞り
包装方法において、該加熱板の外周部分と該成形ボック
スとの間で圧締されたフィルムの圧締面に対して、加熱
板の板面の一部分又は全体がより高い凹んだ位置にある
か、より低い突出した位置にある加熱板を用いることを
特徴とする深絞り包装方法。The peripheral part of the thermoplastic film is pressed between the outer peripheral part of the upper heating plate and the outer peripheral part of the lower molded box, and the surface of the heating plate, which has a large number of small exhaust holes, is compressed by the atmospheric pressure difference. The central part of the film, whose periphery has been pressed, is brought into close contact with the inner surface of the concave mold in the molding box by an atmospheric pressure difference, and is then shaped. In a deep drawing packaging method in which the contents are filled and then the upper surface of the flange portion of the film shaped into a concave shape is heated and sealed with a plastic film as a lid material, the space between the outer peripheral portion of the heating plate and the molded box is A heating plate in which a part or the whole of the plate surface of the heating plate is in a higher concave position or in a lower protruding position with respect to the pressing surface of the film pressed by the heating plate. Squeezing packaging method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25579386A JPS63111032A (en) | 1986-10-29 | 1986-10-29 | Deep draw packing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25579386A JPS63111032A (en) | 1986-10-29 | 1986-10-29 | Deep draw packing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63111032A true JPS63111032A (en) | 1988-05-16 |
Family
ID=17283711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25579386A Pending JPS63111032A (en) | 1986-10-29 | 1986-10-29 | Deep draw packing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63111032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022121649A (en) * | 2016-11-10 | 2022-08-19 | 日本水産株式会社 | Production method of scallop adductor muscle-like fibrous steamed fish paste package, and production device of scallop adductor muscle-like fibrous steamed fish paste package |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028470A (en) * | 1973-07-18 | 1975-03-24 | ||
| JPS5941060U (en) * | 1982-09-10 | 1984-03-16 | アルプス電気株式会社 | Molded rivets for motors |
-
1986
- 1986-10-29 JP JP25579386A patent/JPS63111032A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028470A (en) * | 1973-07-18 | 1975-03-24 | ||
| JPS5941060U (en) * | 1982-09-10 | 1984-03-16 | アルプス電気株式会社 | Molded rivets for motors |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022121649A (en) * | 2016-11-10 | 2022-08-19 | 日本水産株式会社 | Production method of scallop adductor muscle-like fibrous steamed fish paste package, and production device of scallop adductor muscle-like fibrous steamed fish paste package |
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