JPH028048A - Water-absorptive sheet - Google Patents
Water-absorptive sheetInfo
- Publication number
- JPH028048A JPH028048A JP16033288A JP16033288A JPH028048A JP H028048 A JPH028048 A JP H028048A JP 16033288 A JP16033288 A JP 16033288A JP 16033288 A JP16033288 A JP 16033288A JP H028048 A JPH028048 A JP H028048A
- Authority
- JP
- Japan
- Prior art keywords
- water
- paper
- thermoplastic resin
- absorptive
- resin film
- 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
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 17
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 13
- 239000000123 paper Substances 0.000 claims description 32
- 239000002250 absorbent Substances 0.000 claims description 17
- 239000011087 paperboard Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims 2
- 239000004416 thermosoftening plastic Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 51
- 235000013305 food Nutrition 0.000 abstract description 16
- 238000004806 packaging method and process Methods 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 4
- 229920001577 copolymer Polymers 0.000 abstract description 4
- 239000005022 packaging material Substances 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 abstract description 2
- 229920000058 polyacrylate Polymers 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 229940047670 sodium acrylate Drugs 0.000 abstract description 2
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract 1
- -1 steamed buns Chemical compound 0.000 description 10
- 230000002745 absorbent Effects 0.000 description 9
- 239000002655 kraft paper Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011122 softwood Substances 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- 240000005856 Lyophyllum decastes Species 0.000 description 3
- 235000013194 Lyophyllum decastes Nutrition 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 235000013550 pizza Nutrition 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Packages (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、吸水性を有する吸水シートに関するもので、
特に水を含むまたは水蒸気を発散する食品類などを包装
する時に使用される吸水シートに関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a water-absorbing sheet having water-absorbing properties,
In particular, it relates to a water-absorbing sheet used when packaging foods that contain water or emit water vapor.
（従来の技術）
従来は、水を含むまたは水蒸気を発散する食品類の包装
には、主としてプラスチック製の容器、またはプラスチ
ックフィルムよりなる袋が使用されているが、水や水蒸
気がこれら容器内面で水滴となり、再び食品類に付着す
るとその部分が水を余分にきみ、品質を害する恐れがあ
り、従って容器に穴をあけて水蒸気を容器外に発散させ
る方法が採用されてきたが、近時、アクリル系樹脂など
による固槃分の１００倍から１０００倍の水を吸収する
高吸水性の樹脂が開るために食品類の下敷などに使用さ
れるようになってきた。(Prior Art) Conventionally, plastic containers or bags made of plastic film have been used to package foods that contain water or emit water vapor, but water and vapor can escape from the inside of these containers. If the water droplets form and re-adhere to the food, there is a risk that the droplets will absorb excess water and impair the quality of the food.Therefore, a method has been adopted in which holes are made in the container to allow the water vapor to escape outside the container. Highly absorbent resins that absorb 100 to 1,000 times more water than solid resins, such as acrylic resins, are now being used as underlays for food products.
（当該発明が解決しようとする課題）
以上述べた如く、耐水性のあるプラスチック製の容器、
プラスチックフィルムをラミネートした容器やプラスチ
ックフィルムよりなる袋が包装容器として使用されるよ
うになってきたが、蒸気で蒸した饅頭など水蒸気を発散
する食品類や、焚い友ばかりの米飯類々どを包装すると
、水蒸気が容器の内面で凝縮して水滴となり、それが再
び食品類に付着するとその部分が余分に水を含み食味を
害するので、水蒸気の発散するように穴を開けるが、そ
の外側の包装に使用される紙袋や板紙製の箱などに吸収
され、破れたり箱が変型し之りすることがあり、前記高
吸水性樹脂の応用が検討され水が流れ出る食品類の敷紙
として使用されるようになってき九が、高吸水性樹脂が
断面などより脱落し食品に付着することがあり、水で洗
って更に加工され食用に供するものの場合は、とｔら高
吸水性樹脂が付着しても取除くことが出来るのでよいが
、前記の如く持帰り直ちに食べられる饅頭や、米飯類に
付着することは好ましいことでなく、従ってこの種用途
にはまつ友〈使用されていないのが現状であり、蒸した
ばかりの熱い饅頭や米飯など水蒸気を発散するものを包
装したとき、再び凝縮し之水が再び吸収されることなく
、また、吸水剤などで食品を汚染すること々く、更には
吸水しても強度に変化なく形状が崩れることの危い包装
用紙、紙器の開発が要望されており、これらの課題を解
決することが本発明の目的とするところである。(Problems to be Solved by the Invention) As mentioned above, water-resistant plastic containers,
Containers laminated with plastic film and bags made of plastic film have come to be used as packaging containers, but they are also used to package foods that emit water vapor, such as steamed buns, and rice products that are best suited for cooking. Then, the water vapor condenses on the inner surface of the container and becomes water droplets, and if it adheres to the food again, that part will contain excess water and spoil the taste, so holes are made to allow the water vapor to escape, but the outer packaging It can be absorbed into paper bags and paperboard boxes used for food products, causing them to tear or become deformed.The application of the above-mentioned super water-absorbent resin is being considered, and it is being used as paper for food products from which water can run off. However, super absorbent resin sometimes falls off from cross sections and adheres to food, and if the product is washed with water and further processed for consumption, super absorbent resin may adhere to the food. However, as mentioned above, it is not preferable for it to adhere to steamed buns or cooked rice that can be eaten immediately after taking home, so Matsutomo is not currently used for this type of use. However, when packaging food that emits water vapor, such as freshly steamed steamed buns or rice, it condenses again and the water is not absorbed again, and water absorbing agents can contaminate the food. There is a need for the development of packaging paper and folding cartons that are susceptible to deformation without any change in strength, and it is an object of the present invention to solve these problems.
（課題を解決する友めの手段）
本発明は、か＼る課題を解決すべく種々検討の結果なさ
れたもので、高吸水性樹脂である例えば、アクリル酸ビ
ニルアルコール共重合体、アクリル酸ソーダ重合体など
の合成樹脂ポリマーの微細な球状体または粉末を、ポリ
エチレン、ポリプロピレンなど熱可塑性樹脂フィルムと
吸水性または透水性のある紙または不織布と宕沼せる間
に熱可塑性樹脂により固着せしめることによシ解決した
ものである。すなわち、高吸水性樹脂であるアクリル酸
ビニルアルコール共重合体はポリエチレン、ポリプロピ
レンなど熱可塑性樹脂と、熱可塑性樹脂が溶融状態にお
いて相溶性なく、かつ溶着せず埋設されたような状態で
固層保持されることを見出し、本発明な完成するに到っ
たものである。なお、高吸水性樹脂はエクストルダーな
どで紙、不織布など忙熱度塑性樹脂をラミネートするに
際し、紙、不織布々どの上に散布し、その上からラミネ
ートするとよく、紙、不織布上に散布せるのち熱可塑性
フィルムを重ね、熱圧着してフィルムと紙などを溶着さ
せるも差支え々い。(Friendly Means for Solving the Problems) The present invention was made as a result of various studies to solve the above problems. By fixing fine spheres or powder of a synthetic resin such as a polymer to a thermoplastic resin film such as polyethylene or polypropylene and a water-absorbent or water-permeable paper or non-woven fabric with a thermoplastic resin while soaking them. This has been resolved. In other words, acrylic acid vinyl alcohol copolymer, which is a super absorbent resin, is not compatible with thermoplastic resins such as polyethylene and polypropylene when the thermoplastic resin is in a molten state, and is retained in a solid state in a buried state without welding. The present invention has been completed based on this discovery. When laminating high-temperature plastic resins such as paper and non-woven fabrics using an extruder, it is best to spray the super-absorbent resin onto the paper or non-woven fabric and then laminate on top of it. It is also possible to stack plastic films and heat-press them to weld the film and paper.
（作用）
本発明にか＼る吸水シートは、高吸水性樹脂の微粒子が
熱可塑性樹脂フィルムと吸水または透水性を有する紙ま
たは不織布の溶着せる間に熱可塑性樹脂により固着され
ているので、水蒸気または水が紙または不織布に吸Ｎま
たは通過し、熱度す性樹脂フィルム面で水が凝縮しても
高吸水性樹脂が水を吸収し、再び被包装物に水滴が吸収
される恐れはまったくなくなるものであり、かつ、熱可
塑性樹脂フィルムは水蒸気を遮断するのでその外但１の
包装材料が吸水し強度・が低下したり形がぐずれるのを
防ぐ作用を有するものである。(Function) In the water-absorbing sheet according to the present invention, the fine particles of the super-absorbent resin are fixed by the thermoplastic resin between the thermoplastic resin film and the water-absorbing or water-permeable paper or nonwoven fabric, so that water vapor Or, even if water absorbs N or passes through paper or non-woven fabric and condenses on the surface of the heat-resistant resin film, the super absorbent resin absorbs the water and there is no possibility that water droplets will be absorbed into the packaged item again. Moreover, since the thermoplastic resin film blocks water vapor, it has the effect of preventing the packaging material from absorbing water and decreasing its strength or losing its shape.
（実施例） 本発明を実施例に従って説明する。(Example) The present invention will be explained according to examples.
実施例１゜
針葉樹晒クラフトパルプを主原料となし、耐水強化剤と
してポリアミドエピクロールヒドリンを０．５重ｔ＝Ｚ
添加して抄造し九坪量６０ ｆ／ｌｔ？の耐水強度を有
する紙に、低密度ポリエチレンをエクストルダーを用い
てラミネートし厚さ約３０μの被膜を形成させるに際し
、高吸水性樹。Example 1゜The main raw material was bleached softwood kraft pulp, and 0.5 weight t=Z of polyamide epichlorohydrin as a water resistance strengthening agent.
Addition and paper making, nine tsubo weight 60 f/lt? When laminating low-density polyethylene using an extruder to form a film with a thickness of approximately 30 μm on paper with a water resistance strength of
脂として平均粒径２０μのアクリル酸、ビニルアルコー
ル共重合体を厭上に散布したのち熱可塑性樹脂である低
密度ポリエチレンをラミネートし、耐水シートを得た。After spraying an acrylic acid/vinyl alcohol copolymer with an average particle size of 20 μm as a fat, a thermoplastic resin, low-density polyethylene, was laminated to obtain a water-resistant sheet.
かくして得られた耐水シートは、高吸水性樹脂の粒子が
熱可塑性樹脂と紙の溶着する間に固着されているが、普
通のラミネート紙と表面が変わることなく良好であり、
フライドチキンを包装するに際し、紙面をフライドチキ
ン側にして乗せ、従来通り紙箱で包゛装し、約１時間経
過したのちも、フライドチキンから発生した水蒸気を再
び吸湿して表面が湿った状態となることなく、揚げたて
と同じ状態で良好であった、
実施例２゜
針葉樹晒クラフトパルプを主原料となし、耐水強化剤の
ポリアミドエピクロールヒドリンを０．５重量係添加し
て抄造した坪量５０１７臂の耐水紙と、丸網多筒式抄紙
機で木材パルプを主原料として抄造された坪量３５０
ｆ／ｇｌのコートボールを溶融した白色ポリエチレンを
用い約３０μのフィルム層を形成せしめて貼合するに際
し、平均粒径２０μのアクリル酸ソーダ重合体よりなる
吸水剤の粉末を耐水紙上に散布せるのち白色ポリエチレ
ンで耐水紙とコートボールを貼合し、コートボール／白
色ポリエチレン／高吸水性樹脂粉末／耐水紙の構成より
なる製函用の吸水シートが得られた。得られた吸水シー
トを用い、菓子用包装面を製函し、蒸気で蒸した饅頭を
包んだところ、約１時間後、函の硬さは変化せず、饅頭
に水滴が再付着することなく、良好であつ友。The thus obtained water-resistant sheet has superabsorbent resin particles fixed between the thermoplastic resin and the paper, but the surface is no different from that of ordinary laminated paper and is good.
When packaging fried chicken, place the paper with the paper side facing the fried chicken side, wrap it in a paper box as usual, and after about an hour, the water vapor generated from the fried chicken will be absorbed again and the surface will remain moist. Example 2: Paper made from bleached softwood kraft pulp as main raw material and with 0.5 weight percentage of polyamide epichlorohydrin added as a water resistance enhancer. 350 grammage paper made from 5017-arm water-resistant paper and wood pulp using a round net multi-tube paper machine as the main raw materials.
f/gl coated balls using molten white polyethylene to form a film layer of about 30 μm, and after scattering water-absorbing agent powder made of sodium acrylate polymer with an average particle size of 20 μm on waterproof paper. Water-resistant paper and coated balls were laminated with white polyethylene to obtain a water-absorbent sheet for box making having a composition of coated balls/white polyethylene/super water-absorbent resin powder/water-resistant paper. Using the resulting water-absorbing sheet to form a box with the confectionery packaging side wrapped in steamed buns, the hardness of the box did not change after about an hour, and water droplets did not re-adhere to the buns. , good and warm friend.
実施例３゜
未晒針葉樹クラフトパルプを主原料として坪量７５９／
′ｒＩ？に抄造したクラフト紙の片面に３０μのポリプ
ロピレンをラミネートシた防水クラフト紙のポリエチレ
ン被覆面に、アクリル酸・ビニルアルコール共重合体よ
りなる高吸水性樹脂の粉末を散布したのち、ポリエチレ
ンを原料としｆｃ合成パルプを２０重量％配合し友針葉
樹晒クラフトパルプより々る坪量５０ ｔ／ｄの紙を熱
圧着し、防水クラフト紙／高吸水性樹脂／合成パルプ配
合紙よりなる吸水シートを得た。得られた吸水シートを
段ボール箱の円面に貼合し、ピザパイを包装して約１時
間放置せるに、従来ピザパイが発生した水蒸気により湿
った状態となつ之が、焼きたての状態を保ち良好であっ
た。Example 3゜Basic weight 759/Using unbleached softwood kraft pulp as main raw material
'rI? After sprinkling powder of super absorbent resin made of acrylic acid/vinyl alcohol copolymer on the polyethylene-coated surface of waterproof kraft paper, which is made by laminating 30 μm polypropylene on one side of kraft paper made in A paper containing 20% by weight of synthetic pulp and having a basis weight of 50 t/d, which is larger than bleached softwood kraft pulp, was bonded under heat to obtain a water-absorbing sheet consisting of waterproof kraft paper/super absorbent resin/synthetic pulp blended paper. The obtained water-absorbing sheet is attached to the circular surface of a cardboard box, the pizza pie is wrapped and left for about an hour, but the conventional pizza pie remains moist due to the steam generated, but the pizza pie remains freshly baked. It was good.
（発明の効果）
本発明は以上述べた如く、微細な高吸水性樹脂が熱可塑
性樹脂フィルムと、吸水性または透水性を有する紙又は
不織布の溶着せる間に固着しているので、特に水蒸気を
発生する作りたての食品類の包装材料として使用せる場
合、発生した水蒸気は紙または不織布に吸着捷たは透過
し熱可塑性樹脂フィルム上で水滴となるも高吸水性樹脂
Ｖこより吸水されるので、食品類に再び水滴が付着する
恐れはなく、包装時と同様の状態を保つことが出来るば
かりでなく、包装紙をるなどの効果を有するものである
。(Effects of the Invention) As described above, in the present invention, since the fine super absorbent resin is fixed between the thermoplastic resin film and the paper or nonwoven fabric having water absorbency or water permeability, it is particularly effective against water vapor. When used as a packaging material for freshly prepared foods, the generated water vapor adsorbs or permeates the paper or non-woven fabric and forms water droplets on the thermoplastic resin film, but the water is absorbed by the super absorbent resin V. There is no risk that water droplets will adhere to the product again, and the product can not only maintain the same condition as when it was packaged, but also have the effect of wrapping the wrapping paper.
Claims (1)
水または透水性を有する紙または不織布と溶着せる間に
固着せしめたことを特徴とする吸水シート。 ２、微細な高吸水性樹脂を、紙または板紙と吸水または
透水性を有する紙または不織布を熱可塑性フィルムで溶
着せる積層シートにおいて、熱可塑性フィルムと吸水ま
たは透水性を有する紙または不織布の溶着せる間に固着
せしめたことを特徴とする吸水シート。[Claims] 1. A water-absorbing sheet characterized in that a fine super-absorbent resin is fixed between a thermoplastic resin film and water-absorbing or water-permeable paper or nonwoven fabric, which are welded together. 2. In a laminated sheet in which fine super-absorbent resin is welded to paper or paperboard and water-absorbing or water-permeable paper or non-woven fabric with a thermoplastic film, a thermoplastic film and water-absorbing or water-permeable paper or non-woven fabric are welded together. A water-absorbing sheet characterized by being fixed in between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63160332A JPH06104355B2 (en) | 1988-06-28 | 1988-06-28 | Water-absorbent food packaging box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63160332A JPH06104355B2 (en) | 1988-06-28 | 1988-06-28 | Water-absorbent food packaging box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH028048A true JPH028048A (en) | 1990-01-11 |
| JPH06104355B2 JPH06104355B2 (en) | 1994-12-21 |
Family
ID=15712679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63160332A Expired - Lifetime JPH06104355B2 (en) | 1988-06-28 | 1988-06-28 | Water-absorbent food packaging box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06104355B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444974A (en) * | 1990-05-30 | 1992-02-14 | Uni Charm Corp | Moisture and water absorbing corrugated packaging material |
| JPH04209899A (en) * | 1990-11-30 | 1992-07-31 | Toppan Printing Co Ltd | Production of liquid-absorbing sheet |
| JPH05489A (en) * | 1991-04-16 | 1993-01-08 | Hitachi Cable Ltd | Waterproof sheet with non-woven fabric and preparation thereof |
| JP2007216985A (en) * | 2006-02-14 | 2007-08-30 | Showa Denko Plastic Products Co Ltd | Packaging material having dehydrating function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987940U (en) * | 1982-12-02 | 1984-06-14 | 日之出工業株式会社 | Drip-proof sheet |
| JPS6167120U (en) * | 1984-10-09 | 1986-05-08 |
-
1988
- 1988-06-28 JP JP63160332A patent/JPH06104355B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987940U (en) * | 1982-12-02 | 1984-06-14 | 日之出工業株式会社 | Drip-proof sheet |
| JPS6167120U (en) * | 1984-10-09 | 1986-05-08 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444974A (en) * | 1990-05-30 | 1992-02-14 | Uni Charm Corp | Moisture and water absorbing corrugated packaging material |
| JPH04209899A (en) * | 1990-11-30 | 1992-07-31 | Toppan Printing Co Ltd | Production of liquid-absorbing sheet |
| JPH05489A (en) * | 1991-04-16 | 1993-01-08 | Hitachi Cable Ltd | Waterproof sheet with non-woven fabric and preparation thereof |
| JP2007216985A (en) * | 2006-02-14 | 2007-08-30 | Showa Denko Plastic Products Co Ltd | Packaging material having dehydrating function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06104355B2 (en) | 1994-12-21 |
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