JP3589754B2

JP3589754B2 - Continuous collecting pot

Info

Publication number: JP3589754B2
Application number: JP24158295A
Authority: JP
Inventors: 俊彦山根; 剛細川; 正志谷村; 秀和寺沢
Original assignee: Nippon Beet Sugar Manufacturing Co Ltd; Toppan Inc
Current assignee: Nippon Beet Sugar Manufacturing Co Ltd; Toppan Inc
Priority date: 1995-09-20
Filing date: 1995-09-20
Publication date: 2004-11-17
Anticipated expiration: 2015-09-20
Also published as: JPH0974917A

Description

【０００１】
【産業上の利用分野】
本発明は、野菜や花などの苗作りとその苗の植付けに使用する連続集合鉢体に関するものである。
【０００２】
【従来の技術】
最近、ネギ、ほうれん草や菊などは、作業の能率化を計るため、連続集合鉢体による苗作りと簡易移植器による植付けが広く行われている。この方法は、ハニカム状に集合された紙製の連続集合鉢の両側にラベルが貼着されている連続集合鉢体を、展開板にセットし、床土をつめて箱をかぶせて反転したのち、展開板を外して、形成された鉢の播種穴に種を所定数ずつ播種器で播きて育苗し、苗が育った連続集合鉢体は、溝切り、植付け、培土が一作動でできる簡易移植器に装填して、連続鉢を一個ずつ引き出しながら、鉢ごと苗を田畑に植え付けるものであった。
【０００３】
【発明が解決しようとする課題】
しかしながら、連続集合鉢の両側に貼着されたラベルは、表示の目的のほかに、展開板に連続集合鉢体をセットする目的をもつため、外側紙層の内側面に形成する熱融着性プラスチック（通常、ポリエチレン）層と、連続集合鉢と貼着する内側紙層の外側面に形成する熱融着性プラスチック（通常、ポリエチレン）層とが部分的な熱融着部により接着されており、この未接着部に展開板の固定治具を差し込んで展開板に連続集合鉢を固定していた。ところで、ポリエチレンのような熱融着性プラスチックは、土中に埋設されると、分解されずにいつまでも残るため、土中に溜まって苗の育成を阻害したり、次回の耕耘時に耕耘機に絡まって事故を発生することなどがあった。このため、植付け時に、ラベルは、田畑に埋設しないように排除する手間が必要であった。
【０００４】
本発明は、従来の連続集合鉢体を用いた植付け時のラベルを田畑に埋設しないように排除する煩わしさを解決したものであり、ラベルをそのまま土中に埋設してもよく、ラベルの廃棄処理が容易な連続集合鉢体を提供するものである。
【０００５】
【課題を解決するための手段】
本発明の第１の発明は、図１（ａ）及び（ｂ）に示すように、ハニカム状に集合された紙製の連続集合鉢（１００）の両側にラベル（２００）が貼着されている連続集合鉢体（１０）において、前記ラベル（２００）が、図１（ｃ）及び（ｄ）に示すように、外側紙層（２１０）の内側面に形成する熱融着性の生分解性プラスチック層（２１１）と、連続集合鉢と貼着する内側紙層（２２０）の外側面に形成する熱融着性の生分解性プラスチック層（２２１）とが部分的な熱融着部（２３０）により接着していることを特徴とする連続集合鉢体である。
【０００６】
請求項２記載の発明は、前記連続集合鉢体において、前記ラベルの外側紙層の内側面に形成する生分解性プラスチック層と、内側紙層の外側面に形成する生分解性プラスチック層との熱融着部の接着強度が０．８ｋｇ／１５ｍｍ幅以上であることを特徴とする。
【０００７】
上述の生分解性プラスチック層としては、３−ヒドロキシ酪酸と３−ヒドロキシ吉草酸の共重合体で直鎖のポリエステル層や、３−ヒドロキシ酪酸と３−ヒドロキシ吉草酸の共重合体１００重量部に対して、ポリε−カプロラクトン１０〜３００重量部を配合した樹脂層などが使用できる。
【０００８】
連続集合鉢は、短冊状の紙を複数枚、一定間隔にストライプ状に設けた接着剤層により接着したもので、展開した時に個々の鉢がハニカム状に連なるように形成されたものである。このような集合鉢は、例えば特公昭５５−３０８０５号に記載されている。なお、この集合体は展開する前は四角柱状である。
また、ラベルと連続集合鉢との貼着する方法には特に制限はないが、連続集合鉢の端部もハニカム状になるようにストライプ状に接着剤をラベルの内側紙層の内側面に塗布して接着する。
【０００９】
また、ラベルの外側紙層の外側面には、必要に応じて、文字や絵柄などを印刷してもよい。
【００１０】
【作用】
本発明の連続集合鉢体は、ラベルを構成する材質が紙と生分解性プラスチックとからなるため、ラベルが土中に埋設されても、土中で分解され、土中に溜まって苗の育成を阻害したり、耕耘時に耕耘機に絡まって事故を発生することなどがない。
【００１１】
また、請求項２記載の連続集合鉢体は、ラベルの外側紙層の内側面に形成する生分解性プラスチック層と、内側紙層の外側面に形成する生分解性プラスチック層との熱融着部の接着強度が０．８ｋｇ／１５ｍｍ幅以上であるため、図１（ｄ）に示すラベル（２００）の未接着部（２４０）に展開板の固定治具を差し込んで連続集合鉢体を展開して展開板に固定するときに、ラベルの強度不足によってラベルが破損するような危惧がない。
【００１２】
【実施例】
まず、３−ヒドロキシ吉草酸の含有率が１０％で厚さ２０μｍの３−ヒドロキシ酪酸・３−ヒドロキシ吉草酸共重合ポリエステル（生分解性プラスチック）と、厚さ２０μｍのポリエチレンとを共押出機で共押し出しし、この３−ヒドロキシ酪酸・３−ヒドロキシ吉草酸共重合ポリエステル（生分解性プラスチック）面を坪量３５０ｇ／ｍ^２のクラフト紙にラミネートして、ポリエチレン層／３−ヒドロキシ酪酸・３−ヒドロキシ吉草酸共重合ポリエステル（生分解性プラスチック）層／紙層構成の積層体を得た。次に、この積層体のポリエチレン層を剥離して、３−ヒドロキシ酪酸・３−ヒドロキシ吉草酸共重合ポリエステル（生分解性プラスチック）層／紙層構成の積層体を得た。この積層体の３−ヒドロキシ酪酸・３−ヒドロキシ吉草酸共重合ポリエステル（生分解性プラスチック）層面を重ね合わせて、所定の位置をヒートシール法で部分的な熱融着部を形成して接着し、所定寸法に切断して、図１（ｃ）及び（ｄ）に示す外側紙層（２１０）／生分解性プラスチック層（２１１）／部分熱融着部（２３０）／生分解性プラスチック層（２２１）／内側紙層（２２０）構成のラベル（２００）を作製した。そして、このラベル（２００）を、図１（ａ）及び（ｂ）に示すように、ハニカム状に集合された紙製の連続集合鉢（１００）の両側に接着剤で貼着して、本実施例の連続集合鉢体（１０）を作製した。なお、ラベルの外側紙層の外側面には文字を印刷した。
【００１３】
次に、本実施例の連続集合鉢体を、ラベルの未接着部に展開板の固定治具を差し込んで展開板にセットし、床土をつめて箱をかぶせて反転したのち、展開板を外して、形成された鉢の播種穴にネギの種を３粒ずつ播種器で播きて育苗した。なお、ラベルの熱融着部の接着強度は、１．０ｋｇ／１５ｍｍ幅と強く、連続集合鉢体を展開板にセットするとき、ラベルの熱融着部が剥離する危惧は全く感じなかった。一方、別途に、比較のため、外側紙（坪量３５０ｇ／ｍ^２のクラフト紙）層／２０μｍ厚ポリエチレン層／部分熱融着部／２０μｍ厚ポリエチレン層／内側紙（坪量３５０ｇ／ｍ^２のクラフト紙）層構成のラベル（２００）を作製し、このラベルを貼着した従来の連続集合鉢体を作製したが、ラベルの熱融着部の接着強度は、０．７３ｋｇ／１５ｍｍ幅であり、連続集合鉢体を展開板にセットするとき、ラベルの熱融着部の一部に剥離がみられた。
【００１４】
次に、苗が育った本実施例の連続集合鉢体を、簡易移植器に装填し、連続鉢を一個ずつ引き出しながら、連続鉢及びラベルごと苗を田畑に植え付けた。この植付け作業においては、ラベルを排除する手間がなく、効率的であった。なお、本実施例のラベルの生分解性プラスチック層は、土中では約６か月で分解した。
【００１５】
【発明の効果】
本発明の連続集合鉢体を用いると、植付け時にラベルをそのまま土中に埋設してもよく、ラベルの廃棄処理が容易となり、植付け作業の効率が向上する。
【００１６】
また、ラベルの熱融着部の接着強度が、０．８ｋｇ／１５ｍｍ幅以上と強く、連続集合鉢体を展開板にセットするとき、ラベルの熱融着部が剥離する危惧がない。
【図面の簡単な説明】
【図１】（ａ）は、連続集合鉢体の側面図であり、（ｂ）は、その平面図である。（ｃ）は、実施例のラベルの熱融着部を示す平面図であり、（ｄ）は、その構成を示す断面図である。
【符号の説明】
１０……連続集合鉢体
１００……連続集合鉢
２００……ラベル
２１０……外側紙層
２１１，２２１……生分解性プラスチック
２２０……内側紙層
２３０……熱融着部
２４０……未接着部[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a continuous collecting pot used for producing seedlings such as vegetables and flowers and planting the seedlings.
[0002]
[Prior art]
Recently, for green onion, spinach, chrysanthemum, and the like, seedling production using a continuous collecting pot and planting using a simple transplanter have been widely performed in order to improve the efficiency of work. In this method, a continuous collecting pot with labels attached to both sides of a paper continuous collecting pot assembled in a honeycomb shape is set on a development board, filled with floor soil, covered with a box, and then inverted. , Remove the spreader plate, sow seeds in the seeding hole of the formed pot by a predetermined number of seeders with a seeder, and raise the seedlings. The seedlings were planted in the fields with the pots being loaded into the transplanter and the continuous pots being pulled out one by one.
[0003]
[Problems to be solved by the invention]
However, since the labels attached to both sides of the continuous collecting pot have the purpose of setting the continuous collecting pot on the spreader plate in addition to the purpose of display, the heat-fusing property formed on the inner surface of the outer paper layer is used. A plastic (usually polyethylene) layer and a heat-sealable plastic (usually polyethylene) layer formed on the outer surface of the inner paper layer to be attached to the continuous collecting pot are bonded by a partial heat-seal part. Then, a jig for fixing the developing plate was inserted into the unbonded portion to fix the continuous collecting pot to the developing plate. By the way, when heat fusible plastics such as polyethylene are buried in the soil, they remain indefinitely without being decomposed. Accidents occurred. For this reason, at the time of planting, it was necessary to remove the label so as not to bury it in the fields.
[0004]
The present invention solves the inconvenience of eliminating a label at the time of planting using a conventional continuous collecting pot so as not to be buried in a field, and the label may be buried in the soil as it is, and disposal of the label may be performed. It is intended to provide a continuous collecting pot that is easy to treat.
[0005]
[Means for Solving the Problems]
In the first invention of the present invention, as shown in FIGS. 1A and 1B, labels (200) are attached to both sides of a continuous paper collecting pot (100) collected in a honeycomb shape. In the continuous collecting pot (10), the label (200) is formed on the inner surface of the outer paper layer (210) as shown in FIGS. The heat-fusible biodegradable plastic layer (221) formed on the outer surface of the inner paper layer (220) to be attached to the continuous collecting pot is partially heat-sealed ( (230) is a continuous collecting pot.
[0006]
The invention according to claim 2 is characterized in that, in the continuous collecting pot, a biodegradable plastic layer formed on the inner surface of the outer paper layer of the label and a biodegradable plastic layer formed on the outer surface of the inner paper layer. The heat-sealed portion has an adhesive strength of 0.8 kg / 15 mm width or more.
[0007]
As the above-mentioned biodegradable plastic layer, a linear polyester layer of a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid or 100 parts by weight of a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid is used. On the other hand, a resin layer containing 10 to 300 parts by weight of poly ε-caprolactone can be used.
[0008]
The continuous collecting pot is formed by bonding a plurality of strip-shaped papers with an adhesive layer provided in a stripe pattern at a predetermined interval, and is formed such that the individual pots are connected in a honeycomb shape when unfolded. Such a collecting pot is described, for example, in Japanese Patent Publication No. 55-30805. Note that this aggregate is in the shape of a square pillar before being expanded.
There is no particular limitation on the method of sticking the label and the continuous collecting pot, but an adhesive is applied to the inner surface of the inner paper layer of the label in a striped shape so that the end of the continuous collecting pot also has a honeycomb shape. And glue.
[0009]
Further, characters and pictures may be printed on the outer surface of the outer paper layer of the label, if necessary.
[0010]
[Action]
In the continuous collecting pot of the present invention, since the material constituting the label is made of paper and biodegradable plastic, even if the label is buried in the soil, it is decomposed in the soil and accumulates in the soil to grow seedlings. There is no hindrance to the cultivator, and no accidents are caused by tangling with the cultivator during tilling.
[0011]
In addition, the continuous collecting pot according to claim 2 is a thermal fusion bonding of a biodegradable plastic layer formed on the inner surface of the outer paper layer of the label and a biodegradable plastic layer formed on the outer surface of the inner paper layer. Since the adhesive strength of the part is 0.8 kg / 15 mm width or more, the fixing jig of the developing plate is inserted into the unbonded part (240) of the label (200) shown in FIG. There is no fear that the label may be damaged due to insufficient strength of the label when the label is fixed to the developing plate.
[0012]
【Example】
First, a 3-hydroxybutyric acid / 3-hydroxyvaleric acid copolymerized polyester (biodegradable plastic) having a content of 3-hydroxyvaleric acid of 10% and a thickness of 20 μm and a polyethylene having a thickness of 20 μm are coextruded. The 3-hydroxybutyric acid / 3-hydroxyvaleric acid copolymerized polyester (biodegradable plastic) face was laminated on kraft paper having a basis weight of 350 g / m ² to form a polyethylene layer / 3-hydroxybutyric acid-3- A laminate having a hydroxyvaleric acid copolymerized polyester (biodegradable plastic) layer / paper layer configuration was obtained. Next, the polyethylene layer of the laminate was peeled off to obtain a laminate having a 3-hydroxybutyric acid / 3-hydroxyvaleric acid copolymerized polyester (biodegradable plastic) layer / paper layer configuration. The surfaces of the 3-hydroxybutyric acid / 3-hydroxyvaleric acid copolymerized polyester (biodegradable plastic) layers of the laminate are overlapped, and a predetermined position is heat-sealed to form a partial heat-sealed portion and adhered. The outer paper layer (210) / biodegradable plastic layer (211) / partial heat-sealed portion (230) / biodegradable plastic layer (shown in FIGS. 1C and 1D) 221) / Inner paper layer (220) label (200). Then, as shown in FIGS. 1 (a) and 1 (b), the label (200) is attached to both sides of a continuous paper collecting pot (100) assembled in a honeycomb shape with an adhesive, and The continuous assembly pot (10) of the example was produced. Characters were printed on the outer surface of the outer paper layer of the label.
[0013]
Next, the continuous collecting pot of the present example was set on the unfolded plate by inserting the fixing jig of the unfolded plate into the non-adhered portion of the label, and after filling the floor soil, covering the box and inverting, the unfolded plate was removed. The seeds were removed, and three seeds of green onion were seeded in a seeding hole of the formed pot with a seeder to grow seedlings. Note that the adhesive strength of the heat-sealed portion of the label was as strong as 1.0 kg / 15 mm width, and there was no fear that the heat-sealed portion of the label would be peeled off when the continuous collecting pot was set on the development plate. On the other hand, separately, for comparison, an outer paper (kraft paper having a basis weight of 350 g / m ² ) layer / 20 μm thick polyethylene layer / partial heat-sealed portion / 20 μm thick polyethylene layer / inner paper (a basis weight of 350 g / m ² ) Kraft paper) A label (200) having a layer configuration was prepared, and a conventional continuous collecting pot having the label attached thereto was prepared. The adhesive strength of the heat-sealed portion of the label was 0.73 kg / 15 mm width. When the continuous collecting pot was set on the developing plate, peeling was observed in a part of the heat-sealed portion of the label.
[0014]
Next, the continuous collecting pots of this example in which the seedlings were grown were loaded into a simple transplanter, and the seedlings were planted in a field together with the continuous pots and the label while pulling out the continuous pots one by one. In this planting operation, there was no effort to remove the label, and the planting was efficient. The biodegradable plastic layer of the label of the present example decomposed in soil in about 6 months.
[0015]
【The invention's effect】
When the continuous collecting pot of the present invention is used, the label may be buried in the soil as it is at the time of planting, the disposal of the label becomes easy, and the efficiency of the planting operation is improved.
[0016]
In addition, the adhesive strength of the heat-sealed portion of the label is as high as 0.8 kg / 15 mm width or more, and there is no fear that the heat-sealed portion of the label is peeled off when the continuous collecting pot is set on the deployment plate.
[Brief description of the drawings]
FIG. 1A is a side view of a continuous collecting pot, and FIG. 1B is a plan view thereof. (C) is a plan view showing a heat-sealed portion of the label of the example, and (d) is a cross-sectional view showing the configuration.
[Explanation of symbols]
10 Continuous collecting pot body 100 Continuous collecting pot 200 Label 210 Outer paper layers 211 and 221 Biodegradable plastic 220 Inner paper layer 230 Heat-fused part 240 Unbonded Department

Claims

A continuous collecting pot body in which labels made of a paper layer and a biodegradable plastic layer are attached to both sides of a continuous paper collecting pot formed in a honeycomb shape, wherein the label is an inner surface of an outer paper layer. And a heat-fusible biodegradable plastic layer formed on the outer surface of the inner paper layer adhered to the continuous collecting pot. A continuous collecting pot characterized by being adhered by:

The adhesive strength of the heat-sealed portion between the biodegradable plastic layer formed on the inner surface of the outer paper layer of the label and the biodegradable plastic layer formed on the outer surface of the inner paper layer is 0.8 kg / 15 mm width or more. The continuous collecting pot according to claim 1, wherein: