JPH0526062Y2 - - Google Patents
Info
- Publication number
- JPH0526062Y2 JPH0526062Y2 JP18410087U JP18410087U JPH0526062Y2 JP H0526062 Y2 JPH0526062 Y2 JP H0526062Y2 JP 18410087 U JP18410087 U JP 18410087U JP 18410087 U JP18410087 U JP 18410087U JP H0526062 Y2 JPH0526062 Y2 JP H0526062Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- urethane resin
- thermoplastic urethane
- polypropylene
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 description 16
- -1 polypropylene Polymers 0.000 description 16
- 229920001155 polypropylene Polymers 0.000 description 16
- 230000035699 permeability Effects 0.000 description 10
- 235000012055 fruits and vegetables Nutrition 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 4
- 150000003077 polyols Chemical class 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000004909 Moisturizer Substances 0.000 description 3
- 239000002781 deodorant agent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000001333 moisturizer Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 125000005442 diisocyanate group Chemical group 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 238000010428 oil painting Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Packages (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、水、又は水を主成分とした液体を収
納した包装体に関し果物、野菜等の青果物のしお
れた防止や、人形のひび割れ防止の為の保湿剤と
して用いられる。また、揮発成分として、アルコ
ール、化学反応型消臭剤、香料等を添加すること
により、食品の鮮度保持剤、消臭剤、芳香剤とし
て利用される。[Detailed description of the invention] <Industrial application field> The present invention relates to a package containing water or a liquid containing water as a main component, and is used to prevent fruits and vegetables such as fruits and vegetables from wilting, and to prevent dolls from cracking. It is used as a moisturizer for. Furthermore, by adding alcohol, chemically reactive deodorants, fragrances, etc. as volatile components, it can be used as a freshness-preserving agent, deodorizer, and aromatic agent for foods.
〈従来の技術及びその問題点〉
果物、野菜等の青果物は収穫後も呼吸を続けて
おり、それに伴う水分蒸散により重量減少し、し
おれや、褐変等の劣化が起る。<Prior art and its problems> Fruits, vegetables, and other fruits and vegetables continue to respire even after they are harvested, and the associated moisture evaporation causes weight loss and deterioration such as wilting and browning.
一般に青果物は５％以上の重量減少によりその
商品価値が無くなると言われている。これらの劣
化を防ぎ、保存期間を延長する為に、低温輸送、
フイルム包装、CA貯蔵等の方法がとられている
が、最も簡便で低コストの方法として輸送中の青
果物に水分を供給することが広く行なわれてい
る。具体的には新聞紙等の紙や、保水性のパル
プ、不織布等に水を含ませ、青果物を包装する段
ボールや、プラスチツクフイルム内に入れるもの
である。この方法は低コストで、水分の供給も十
分に行なうことが出来るが、保水性からの水が遊
離し、別の品質劣化原因となる。すなわち、遊離
した水滴中にはシユードモナス等の好気性水系腐
敗菌が増殖し、青果物を腐敗させる原因となる。 It is generally said that fruits and vegetables lose their commercial value if their weight decreases by 5% or more. In order to prevent these deteriorations and extend the storage period, low-temperature transportation,
Methods such as film packaging and CA storage have been used, but the most simple and low-cost method is to supply moisture to fruits and vegetables during transportation. Specifically, paper such as newspaper, water-retaining pulp, non-woven fabric, etc. is impregnated with water and placed inside a cardboard box or plastic film for packaging fruits and vegetables. Although this method is low cost and can supply sufficient moisture, water is liberated from the water retention capacity, which causes another quality deterioration. That is, aerobic water-borne spoilage bacteria such as Pseudomonas proliferate in the released water droplets, causing fruits and vegetables to rot.
これら遊離水の発生を防ぐ方法としてアクリル
酸ソーダ重合体等の吸水性樹脂を複合化した吸水
性シートに水を含ませ保湿剤として用いることが
考えられる。吸水性樹脂に吸水された水は通常加
わる圧力では遊離しないので前記問題点は解消さ
れるものの、水蒸気の放出速度が遅いので青果物
用の保湿剤としては不十分である。 As a method of preventing the generation of such free water, it is possible to impregnate a water-absorbing sheet made of a composite water-absorbing resin such as a sodium acrylate polymer with water and use it as a humectant. The water absorbed by the water-absorbing resin is not liberated by the pressure normally applied, so the above problem is solved, but the water vapor release rate is slow, so it is not sufficient as a moisturizer for fruits and vegetables.
次に日本人形等の顔や胴部、又は油絵等の美術
品の乾燥によるひび割れを防止する為、ケース内
に水を入れたコツプや杯を置くことは有効な方法
である。しかしながら開放状態のコツプや杯では
振動による衝撃により転倒する恐れがある。また
輸送や保管中の保湿剤としては開放系は使用出来
ない。 Next, in order to prevent the faces and bodies of Japanese dolls, etc., or works of art such as oil paintings from cracking due to drying, it is an effective method to place a cup or cup filled with water inside the case. However, in an open cup or cup, there is a risk of the cup falling over due to the shock caused by vibration. Also, open systems cannot be used as moisturizers during transportation or storage.
〈問題点を解決するための手段〉
本考案は以上の様な問題点を解消する為のもの
であり、共押出し法により得られたポリオレフイ
ン／熱可塑性ウレタン樹脂の積層フイルムを用い
熱可塑性ウレタン樹脂を内層とし、水又は揮発性
成分を含む水溶液からなる液体を充填密封した包
装体である。<Means for Solving the Problems> The present invention is intended to solve the above-mentioned problems, and uses a polyolefin/thermoplastic urethane resin laminated film obtained by a coextrusion method to produce thermoplastic urethane resin. The inner layer is filled with a liquid consisting of water or an aqueous solution containing volatile components and is sealed.
〈作用〉
すなわち、本考案の要点は高い透湿性を有する
熱可塑性ウレタン樹脂を介して、密封された水又
は揮発性成分を含む水溶液より、水蒸気又は有機
蒸気として外部に放出する点である。その結果、
水や水溶液の形で問題となる汚染や悪影響は解消
される。<Function> That is, the key point of the present invention is that water or an aqueous solution containing a volatile component is released to the outside as water vapor or organic vapor through a thermoplastic urethane resin having high moisture permeability. the result,
Problematic pollution and negative effects in the form of water and aqueous solutions are eliminated.
また第２図の要点は共押出しされたポリオレフ
イン／熱可塑性ウレタン樹脂の積層フイルムは容
易に剥離出来、かつポリオレフインは非常に透湿
度が低いので、ポリオレフインを剥離して始めて
水蒸気や有機蒸気を外部に放出し始める点であ
る。その結果、水又は揮発性成分を含む水溶液を
充填してから、使用するまでの期間の目減りを防
ぐことが出来、さらには、ポリオレフインの剥離
面積を加減することにより、水蒸気や有機蒸気の
放出速度をコントロールすることが出来る。 Also, the main point of Figure 2 is that the coextruded polyolefin/thermoplastic urethane resin laminated film can be easily peeled off, and since polyolefin has very low moisture permeability, water vapor and organic vapor can only be released to the outside by peeling off the polyolefin. This is the point at which it begins to release. As a result, it is possible to prevent wear from being filled with water or an aqueous solution containing volatile components until it is used, and by adjusting the peeling area of the polyolefin, the release rate of water vapor and organic vapor can be reduced. can be controlled.
〈実施例〉 以下本考案の実施例を図を持つて説明する。<Example> Embodiments of the present invention will be described below with reference to the drawings.
第１図は本考案の包装体の断面図を示すもので
あり、第２図は使用時にポリプロピレンを剥離し
た状態の断面図を示す。すなわち、共押出し法に
より得られたポリプロピレン２／熱可塑性ウレタ
ン樹脂１の積層フイルム３を用い、夏可塑性ウレ
タン樹脂１が内層となるように熱シールし、内容
物としての水又は揮発性成分を含む水溶液からな
る液体４を密封した包装体である。そして使用時
には第２図に示す通りポリプロピレン２を剥離す
ることにより、水蒸気又は有機蒸気が熱可塑性ウ
レタン樹脂１を通して外部へ放出される。 FIG. 1 shows a cross-sectional view of the package of the present invention, and FIG. 2 shows a cross-sectional view of the package with the polypropylene peeled off during use. That is, a laminated film 3 of polypropylene 2/thermoplastic urethane resin 1 obtained by coextrusion is heat-sealed so that the summer plastic urethane resin 1 becomes the inner layer, and contains water or volatile components as contents. This is a package in which a liquid 4 made of an aqueous solution is sealed. In use, by peeling off the polypropylene 2 as shown in FIG. 2, water vapor or organic vapor is released to the outside through the thermoplastic urethane resin 1.
熱可塑性ウレタン樹脂１は、他の熱可塑性樹脂
に比べ格段に透湿度が高く、熱シールにより容易
に製袋出来、さらには一般の熱可塑性樹脂に比べ
機械的強度が優れる為、本考案の包装体の内層と
して最適である。 Thermoplastic urethane resin 1 has significantly higher moisture permeability than other thermoplastic resins, can be easily made into bags by heat sealing, and has superior mechanical strength compared to general thermoplastic resins, so it is suitable for the packaging of the present invention. Ideal as an inner layer of the body.
熱可塑性ウレタン樹脂１の透湿度は、樹脂組
成、フイルム厚さ、雰囲気条件により変わるが
JISZ028カツプ法による測定によれば、ポリエス
テル系ポリウレタン樹脂で800〜900g／m2・day
（25μ，40℃−90％RH）であり、ポリエーテル系
ポリウレタン樹脂で1700〜1900g／m2・day（25μ，
40℃−90％RH）であつた。これに対し、無延伸
ポリプロピレンフイルムでは、９〜11g／m2・
day（25μ，40℃−90％RH）と非常に低く、一般
に透湿度が大きいと言われている無延ナイロンフ
イルムでも280〜300g／m2・day（25μ，40℃−90
％RH）であつた。 The moisture permeability of thermoplastic urethane resin 1 varies depending on the resin composition, film thickness, and atmospheric conditions.
According to measurement using the JISZ028 cup method, polyester polyurethane resin has a yield of 800 to 900 g/m 2・day
(25μ, 40℃-90%RH), and 1700 to 1900g/m 2・day (25μ,
The temperature was 40℃－90%RH). On the other hand, unstretched polypropylene film has a weight of 9 to 11 g/ m2 .
day (25μ, 40℃−90%RH), and even unrolled nylon film, which is generally said to have high moisture permeability, has a moisture permeability of 280 to 300g/m 2・day (25μ, 40℃−90%RH).
%RH).
この様に非常に透湿度の大きい熱可塑性ウレタ
ン樹脂１を透過層として用いる本考案の包装体で
は、水蒸気の放出速度が非常に速く、短時間のう
ちに雰囲気湿度を上昇させることが出来る。ま
た、ポリプロピレン２を剥離する面積を小さくす
れば、当然水蒸気放出量は小さくなるので、長時
間にわたつて加湿を継続させることも出来る。 In the package of the present invention using the thermoplastic urethane resin 1 with extremely high moisture permeability as the permeable layer, the rate of water vapor release is extremely fast, and the atmospheric humidity can be increased in a short time. Furthermore, if the area from which the polypropylene 2 is peeled is made smaller, the amount of water vapor released will naturally become smaller, so humidification can be continued for a long time.
また内容物としての水に、アルコール、化学反
応型消臭剤、香料等の揮発性成分を配合すれば、
同様に有機蒸気として放出することが出来、アル
コールを配合した場合には水分活性の高いケーキ
類の鮮度保持剤として利用出来、化学反応型消臭
剤を配合した場合には冷蔵庫や自動車内の消臭剤
として利用出来る。 In addition, if volatile ingredients such as alcohol, chemically reactive deodorants, and fragrances are added to the water content,
Similarly, it can be released as organic vapor, and when mixed with alcohol, it can be used as a freshness-preserving agent for cakes with high water activity, and when mixed with chemically reactive deodorizers, it can be used as a deodorant in refrigerators and cars. It can be used as an odor agent.
さらに、熱可塑性ウレタン樹脂１はポリプロピ
レン２の融点（約160℃）より低い温度（120〜
150℃）で容易に熱融着するので、ポリプロピレ
ン２／熱可塑性ウレタン樹脂１の積層フイルム３
を汎用の製袋機で何ら問題なく製袋加工出来る。
そして、熱可塑性ウレタン樹脂１の機械的強度は
一般の熱可塑性樹脂に比べ優れており、特に包装
体の破袋強度は同じ厚さのポリエチレンフイルム
包装袋の1.5〜２倍である為、透湿度を増大さる
為熱可塑性ウレタン樹脂フイルム厚さを薄くして
も、十分な強度を保つことが出来る。 Furthermore, thermoplastic urethane resin 1 has a temperature lower than the melting point (approximately 160°C) of polypropylene 2 (approximately 120°C
150℃), the laminated film 3 of 2 polypropylene/1 thermoplastic urethane resin
can be made into bags with a general-purpose bag making machine without any problems.
The mechanical strength of thermoplastic urethane resin 1 is superior to that of general thermoplastic resins, and in particular, the tear strength of the package is 1.5 to 2 times that of a polyethylene film packaging bag of the same thickness, making it moisture permeable. Therefore, even if the thickness of the thermoplastic urethane resin film is reduced, sufficient strength can be maintained.
本考案で用いる熱可塑性ウレタン樹脂１は基本
的には分子量1000〜3000のOH基末端長鎖ポリオ
ール、ジイソシアネートと分子量500以下の短鎖
ポリオール等の鎖延長剤を主原料として、長鎖ポ
リオールに由来するソフトセグメントと短鎖ジオ
ールとジイソシアネートからのポリウレタンのハ
ードセグメントからなる線状ランダム交互ブロツ
ク共重合体である。 The thermoplastic urethane resin 1 used in the present invention is basically derived from long-chain polyols using as main raw materials OH group-terminated long-chain polyols with a molecular weight of 1000 to 3000, diisocyanate, and chain extenders such as short-chain polyols with a molecular weight of 500 or less. It is a linear random alternating block copolymer consisting of soft segments of polyurethane and hard segments of polyurethane made from short chain diols and diisocyanates.
したがつて、長鎖ポリオールの種類によつてポ
リエステル系、ポリエーテル系及びポリカプロラ
クトン系などがあり、いずれも使用出来る。 Therefore, depending on the type of long-chain polyol, there are polyester-based, polyether-based, polycaprolactone-based, etc., and any of them can be used.
次にポリプロピレン２は、熱可塑性樹脂１と熱
融着せず容易に剥離し、前述の通り、透湿度が低
く、さらに耐熱性があるので外層として最適であ
る。ポリプロピレン２の構造は、耐熱性の点より
ホモポリプロピレンが好ましいが、エチレン−プ
ロピレン共重合体も使用出来る。 Next, the polypropylene 2 is not thermally bonded to the thermoplastic resin 1 and easily peels off, and as described above, has low moisture permeability and is heat resistant, so it is most suitable for the outer layer. The structure of polypropylene 2 is preferably homopolypropylene from the viewpoint of heat resistance, but ethylene-propylene copolymer can also be used.
ポリプロピレン２／熱可塑性ウレタン樹脂１の
積層フイルム３は共押出し法により製造される。
熱可塑性ウレタン樹脂１は透湿度を高くし、コス
トを下げる為にも出来るだけフイルム厚さを薄く
する必要があるが、熱可塑性ウレタン樹脂は温度
変化による溶融粘度変化が大きい為、50μ以下の
フイルムを単層押出し製膜により安定的に製造す
ることは難しい。よつて、押出し加工性の安定し
ているポリプロピレンと共押出し製膜することに
より、熱可塑性ウレタン樹脂フイルムの厚さが数
μの薄膜まで製造が可能であり、本考案の積層フ
イルム３が一工程で製造出来る。本考案で用いる
積層フイルム３の厚さは、その目的、用途に応じ
て変えることが出来、限定されるものではないが
実用上はポリプロピレン10〜50μ／熱可塑性ウレ
タン樹脂５〜50μがコスト及び操作性の点から好
ましい。 The polypropylene 2/thermoplastic urethane resin 1 laminated film 3 is produced by a coextrusion method.
For thermoplastic urethane resin 1, it is necessary to make the film as thin as possible in order to increase moisture permeability and reduce costs, but since thermoplastic urethane resin has a large change in melt viscosity due to temperature changes, it is necessary to make a film with a thickness of 50μ or less. It is difficult to stably produce it by single-layer extrusion film formation. Therefore, by coextruding with polypropylene, which has stable extrusion processability, it is possible to manufacture thermoplastic urethane resin films as thin as several microns, and the laminated film 3 of the present invention can be produced in one step. It can be manufactured with The thickness of the laminated film 3 used in the present invention can be changed depending on the purpose and use, and is not limited, but in practical terms, polypropylene 10 to 50 μm/thermoplastic urethane resin 5 to 50 μm is suitable for cost and operation. preferred from the viewpoint of sex.
〈考案の効果〉
(1) 水又は揮発性成分を含む水溶液は無孔フイル
ムに密封され、水蒸気又は有機蒸気として外部
に放出され、保湿性等の効果を発揮するので、
水モレや、水が直接付着することによる悪影響
がない。<Effects of the invention> (1) Water or an aqueous solution containing volatile components is sealed in a nonporous film and is released to the outside as water vapor or organic vapor, exerting effects such as moisturizing properties.
There is no water leakage or negative effects caused by direct contact with water.
(2) 透湿性の非常に高い熱可塑性ウレタン樹脂を
通して水蒸気が放出されるので、短時間に雰囲
気湿度を上昇させることが出来、かつ雰囲気湿
度が高い場合には透湿速度は低下するので、過
剰な水分を供給することがない。(2) Since water vapor is released through the thermoplastic urethane resin, which has extremely high moisture permeability, the atmospheric humidity can be increased in a short time. It does not provide adequate moisture.
(3) ポリプロピレンを剥離するまでは水蒸気の放
出を抑えることが出来るので使用時までの目減
りを抑えることが出来、保存性が良い。また、
ポリプロピレンの剥離面積を加減することによ
り、水蒸気又は有機蒸気の放出量をコントロー
ルすることが出来る。(3) Since it is possible to suppress the release of water vapor until the polypropylene is peeled off, it is possible to suppress the loss of weight before use, and the shelf life is good. Also,
By adjusting the peeling area of polypropylene, the amount of water vapor or organic vapor released can be controlled.
図面は本考案の実施例を示し、第１図は本考案
の断面図を示すものであり、第２図は使用時にポ
リプロピレンを剥離した状態の断面図を示す。
１……熱可塑性ウレタン樹脂、２……ポリプロ
ピレン、３……積層フイルム、４……液体。
The drawings show an embodiment of the present invention, with FIG. 1 showing a cross-sectional view of the present invention, and FIG. 2 showing a cross-sectional view with the polypropylene peeled off during use. 1...Thermoplastic urethane resin, 2...Polypropylene, 3...Laminated film, 4...Liquid.
Claims (1)
可塑性ウレタン樹脂の積層フイルムを用い、熱可
塑性ウレタン樹脂を内層とした水又は揮発性成分
を含む水溶液を充填密封した包装体。 A package using a laminated film of polyolefin/thermoplastic urethane resin obtained by coextrusion method, filled with water or an aqueous solution containing a volatile component and sealed with thermoplastic urethane resin as the inner layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18410087U JPH0526062Y2 (en) | 1987-12-01 | 1987-12-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18410087U JPH0526062Y2 (en) | 1987-12-01 | 1987-12-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0188878U JPH0188878U (en) | 1989-06-12 |
| JPH0526062Y2 true JPH0526062Y2 (en) | 1993-06-30 |
Family
ID=31475482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18410087U Expired - Lifetime JPH0526062Y2 (en) | 1987-12-01 | 1987-12-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526062Y2 (en) |
-
1987
- 1987-12-01 JP JP18410087U patent/JPH0526062Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0188878U (en) | 1989-06-12 |
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