JP2005041488A - Paper-made container and method for manufacturing it - Google Patents

Paper-made container and method for manufacturing it Download PDF

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Publication number
JP2005041488A
JP2005041488A JP2003200213A JP2003200213A JP2005041488A JP 2005041488 A JP2005041488 A JP 2005041488A JP 2003200213 A JP2003200213 A JP 2003200213A JP 2003200213 A JP2003200213 A JP 2003200213A JP 2005041488 A JP2005041488 A JP 2005041488A
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Japan
Prior art keywords
paper
container
paper pack
paper container
pack board
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Pending
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JP2003200213A
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Japanese (ja)
Inventor
Haruo Ikejima
治男 池島
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Individual
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/80Packaging reuse or recycling, e.g. of multilayer packaging

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper-made container which has a strength, is inexpensive and can be recycled without adversely affecting the environmental aspect. <P>SOLUTION: The paper-made container 5 is manufactured by washing and sterilizing a paper pack sheet 1 cut into an arbitrary size, sandwiching the sheet 1 between papers 2 from both faces without using an adhesive, placing them in a top 3 and a bottom 4 molds heated at an appropriate temperature, closing the 3 and 4 molds simultaneously with fusion of a waterproof coating layer of the paper pack sheet 1 by heat, subjecting the sheet and the papers to bonding/molding by heat and pressure for a predetermined time and taking out a molded object from the mold and finishing the outer circumference of the object to obtain a paper-made container 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は使用済み紙パックの有効活用の一例であって、紙パック板を芯材として利用した紙製容器とその製造方法である。
【0002】
【従来の技術】
従来から使用済み紙パックの有効活用は強く叫ばれてきたが、パルプ原料として再利用される以外直接の再利用は少なかった。また、厚紙による折箱以外のプレス形成による紙製容器は、強度不足や製造コスト高等不満があった。
【0003】
【発明が解決しようとする課題】
そこで紙製容器の強度をアップする為には、厚板紙を使うか芯になる板材を接着剤で接合する等の方法があるが、いずれもコスト面や環境面に悪影響を及ぼすといった問題がある。
【0004】
そこで本発明の目的とするところは、使用済み紙パックの再利用を促進すると共に、環境面に悪影響を及ぼすことなく、しかも安価な紙製容器及び製造方法を提供することにある。
【0005】
【課題を解決するための手段】
上記の目的を達成する為に、本発明の請求項1に記載の発明は、使用済み紙パック板1を芯材として紙2で両面より挟み、加熱した形成金型上3と形成金型下4によって加熱加圧して接合形成された紙製容器5であって、使用済み紙パック板1を補強材として使用したことを特徴とする。
【0006】
また請求項2に記載の紙製容器5の製造方法は、リサイクルされた使用済み紙パック板1を芯材として、紙2で両面より挟み加熱した形成金型3形成金型4によって加熱加圧して接合形成されるものであるが、紙パック板1を芯材としての利用で紙製容器5自体の強度補強目的の他に、紙パック板1を挟む紙2に事前印刷により紙製容器の広告媒体としての機能を強化することを特徴とする。
【0007】
さらに請求項3によれば、接着剤を一切添加することなく紙パック板1の防水被層の加熱溶融のみで接着することにより、環境面に悪影響を及ぼすことなく紙パックの有効活用を促進しながら安価な紙製容器を提供できるということを特徴とする。
【0008】
そして請求項4によれば、接着剤を一切添加することなく紙パック板1の防水被層の加熱溶融のみで接着することにより、当紙製容器5の使用後のリサイクルを容易ならしめたことを特徴とする。
【0009】
本発明の請求項5によれば、請求項1または請求項3記載の紙パック板1は、切り開いて洗浄殺菌された使用済み紙パックから切り取られたもので、資源の有効活用の見地から紙製容器5の芯材として再利用されたことを特徴とする。
【0010】
また請求項6によれば、請求項2または請求項4記載の紙パック板1は、切り開いて洗浄殺菌された使用済み紙パックから切り取られたもので、接着剤を一切使用しない紙製容器5の製造方法は、当該紙製容器5の使用後における資源としての再利用を可能とした。
【0011】
尚、カッコ内の記号は図面及び後述する発明の実施の形態に記載された対応要素、または対応事項を示す。
【0012】
本発明の請求項1に記載の紙製容器によれば、リサイクルされた紙パック板を芯材として利用する為、十分な強度を持った紙製容器を安価に提供することができる。
【0013】
さらに請求項2に記載の紙製容器の製造方法によれば、リサイクルされた紙パック板を芯材として使いながら紙パック板の持つ防水被層を溶融点まで加熱して加圧する為、接着剤を使用しなくても圧着接合できるものである。従って、リサイクルされた使用済み紙パック板に接着剤の役目をさせながら、環境面に悪影響を及ぼすことのない紙製容器を安価に提供することができる。
【0014】
【発明の実施の形態】
図1を参照して、本発明の実施形態に係る紙製容器5について説明する図1は紙製容器5を示す斜視図である。
【0015】
本発明の実施形態に係る紙製容器5は、使用済み紙パック板1を芯材として紙2で両面より挟み加熱された形成金型3形成金型4によって加熱加圧して接合・形成されたものである。そして紙パック板1を芯材として使用することで両面の紙2は、極薄の板紙の使用でも十分容器としての強度を保持できるものである。
【0016】
本実施形態において紙パック板1の両面に使用する紙2は、紙板以外の材質でも代用できる。例えば、木質薄板・竹の皮・布地等である。但し、材質次第では200°C位の耐熱性が必要であって、また材料の厚み次第では形成金型3形成金型4のクリアランスを変更する必要がある。
【0017】
図2及び図3を参照して本発明の実施形態に係る紙製容器の製造方法について説明する。図2は洗浄殺菌された紙パック板1を、芯になる様両面より紙2で挟んだ材料を加熱された形成金型上3形成金型下4の間に挿入。加熱加圧の前工程。図3は加圧形成工程。図4は接合形成された仕上前の紙製容器。図5は接合形成された紙製容器の不揃いな外周を切り揃える工程の説明図である。
【0018】
本発明の実施形態に係る紙製容器の製造方法は、上記した紙製容器5を製造する方法である。この製造方法としては、先ず切り開かれた紙パックから製造しようとする容器に必要なサイズを切り取り、よく洗浄殺菌して紙パック板1を得る。この紙パック板1は容器の形状及び使用目的上、強度がより必要な時は、複数枚重ねて使用することができる。
【0019】
次に上記した紙パック板1を上下両面より挟み込む紙2の材質に関しては、特にバージンペーパーや再生紙の違いがあっても、紙パック板による熱溶融による接合形成に差違はなく容器の使用目的やコスト面を考えて選ぶべきである。ただ、表面処理された著しく耐熱性が低下した紙は避けるべきである。一般的には普通紙が適当である。
【0020】
またその厚さであるが、芯材である紙パック板1の厚さ約0.5mmに対して直径200mm×深さ15mmの円形容器の場合、両面共厚さは0.07mmが適当である。但し芯材である紙パック板1の0.5mm厚の上側に0.07mm厚のペーパー、下側に0.6mm厚の木質薄板または上下面共に0.6mm厚の木質薄板でも形成金型上下のクリアランスの変更により、溶融接合が可能である。
【0021】
本実施形態に係る紙製容器5の製造方法は、紙パック板1を紙2で両面から挟み、接着剤を使用せず熱と圧縮力のみで芯材と上下計3枚の紙板を溶融結合させる為、その加熱温度、加圧力、加圧速度、加圧時間加工材料の湿度は非常に重要である。因みに上記した直径200mm×深さ15mmの容器の場合150°C〜180°Cに熱せられた金型にて約1800kgの圧力で約7秒の加圧が適当である。
【0022】
上記の工程によって加熱・加圧工程が完了した紙製容器は、形成金型(図3)より不揃いな外周を付けたまま取り出され仕上機により外周を切り揃えられて紙製容器の製造が完了する。
【0023】
【発明の効果】
以上の通り、本発明の請求項1記載の紙製容器によれば、接着剤を使用せず紙パック板を補強材として使用したことにより、両面から挟む紙の厚みがわずか0.07mmであっても、他の材質の容器と比較しても決して引けは取らない強度を保った紙製容器を安価に提供することができる。そして、この紙製容器は形成金型の形状を変えることにより使用目的に合わせた形状の容器の提供も種種可能である。
【0024】
また、請求項2に記載の紙製容器の製造方法によれば、一切接着剤を使用しないでもともと紙パック本来の物性であるところの防水被層を利用した溶融圧着による接合形成である為、自然環境にも何ら問題なくコスト面においても、紙パック板と両面のペーパー計3枚重ねの強化容器であっても、接着剤の購入費用もさることながら、人件費の掛かる塗布作業を省略でき、製造コストの低廉化を図ることができる。
【0025】
また、接着剤を使用していないので紙パック板の物性に影響はなく、使用後はまた有価資源として紙パックのリサイクルルートに戻すことも可能である。
【図面の簡単な説明】
【図1】本発明の実施形態に係る紙製容器を示す斜視図である。
【図2】本発明の実施形態に係る紙製容器の製造方法において、紙パック板を上下から挟み、加熱された形成金型を閉じてこれから加圧工程に入るところである。
【図3】同製造方法において加熱加圧状態の説明図である。
【図4】加熱加圧時間が経過し、形成金型を開いて取り出した外周仕上前の紙製容器
【図5】接合形成された紙製容器の不揃いな外周を切り揃える工程の説明図である。
【符号の説明】
1 紙パック板
2 紙
3 形成金型上
4 形成金型下
5 紙製容器
6 形成金型内に組み込まれたヒーター
[0001]
BACKGROUND OF THE INVENTION
The present invention is an example of effective utilization of a used paper pack, and is a paper container using a paper pack board as a core material and a manufacturing method thereof.
[0002]
[Prior art]
Conventionally, effective use of used paper packs has been strongly screamed, but there has been little direct reuse except for reuse as a pulp raw material. In addition, paper containers formed by press forming other than cardboard folding boxes were not satisfactory, such as insufficient strength and high manufacturing costs.
[0003]
[Problems to be solved by the invention]
In order to increase the strength of the paper container, there are methods such as using thick paperboard or bonding the core board material with an adhesive, but both have problems of adversely affecting the cost and the environment. .
[0004]
Accordingly, an object of the present invention is to provide a paper container and a manufacturing method that are inexpensive and do not adversely affect the environment while promoting the reuse of used paper packs.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is characterized in that a used paper pack board 1 is sandwiched from both sides by paper 2 with a used paper pack board 1 as a core material, and the heated upper mold 3 and lower mold are heated. 4 is a paper container 5 bonded and formed by heating and pressurizing with a used paper pack board 1 as a reinforcing material.
[0006]
Further, in the method for manufacturing the paper container 5 according to the second aspect, the recycled used paper pack board 1 is used as a core material and heated and pressurized by the forming mold 3 and the forming mold 4 sandwiched and heated by the paper 2 from both sides. In addition to the purpose of reinforcing the strength of the paper container 5 itself by using the paper pack board 1 as a core material, the paper container 1 is preliminarily printed on the paper 2 sandwiching the paper pack board 1. It is characterized by strengthening its function as an advertising medium.
[0007]
Furthermore, according to claim 3, by adhering only the heat-resistant layer of the waterproof layer of the paper pack board 1 without adding any adhesive, the effective use of the paper pack is promoted without adversely affecting the environment. However, it is possible to provide an inexpensive paper container.
[0008]
According to claim 4, it is possible to facilitate recycling after use of the paper container 5 by adhering only by waterproofing and melting the waterproof layer of the paper pack board 1 without adding any adhesive. It is characterized by.
[0009]
According to claim 5 of the present invention, the paper pack board 1 according to claim 1 or claim 3 is cut from a used paper pack which has been cut open and cleaned and sterilized, and is used from the viewpoint of effective utilization of resources. It is reused as a core material for the container 5.
[0010]
According to claim 6, the paper pack board 1 according to claim 2 or claim 4 is cut out from a used paper pack which has been cut open and cleaned and sterilized, and does not use any adhesive. This manufacturing method made it possible to reuse the paper container 5 as a resource after use.
[0011]
The symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.
[0012]
According to the paper container described in claim 1 of the present invention, since the recycled paper pack board is used as the core material, a paper container having sufficient strength can be provided at low cost.
[0013]
Furthermore, according to the method for manufacturing a paper container according to claim 2, an adhesive is used for heating and pressurizing the waterproof layer of the paper pack board to the melting point while using the recycled paper pack board as a core material. It can be crimped and joined without using the. Accordingly, a paper container that does not adversely affect the environment can be provided at low cost while serving as an adhesive to the recycled used paper pack board.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIG. 1, a paper container 5 according to an embodiment of the present invention will be described. FIG. 1 is a perspective view showing the paper container 5.
[0015]
A paper container 5 according to an embodiment of the present invention is joined and formed by heating and pressurizing with a forming mold 3 and a forming mold 4 sandwiched and heated from both sides with paper 2 using a used paper pack board 1 as a core material. Is. By using the paper pack board 1 as a core material, the double-sided paper 2 can sufficiently retain the strength as a container even when an extremely thin board is used.
[0016]
In the present embodiment, the paper 2 used on both sides of the paper pack board 1 can be substituted with a material other than the paper board. For example, a thin wood board, bamboo skin, and fabric. However, depending on the material, heat resistance of about 200 ° C. is necessary, and depending on the thickness of the material, it is necessary to change the clearance of the forming mold 3 and the forming mold 4.
[0017]
With reference to FIG.2 and FIG.3, the manufacturing method of the paper container which concerns on embodiment of this invention is demonstrated. In FIG. 2, the paper pack plate 1 that has been cleaned and sterilized is inserted between the heated forming mold 3 and the forming mold 4 under the material sandwiched by the paper 2 from both sides so as to become the core. Pre-process of heating and pressing. FIG. 3 shows a pressure forming process. FIG. 4 shows a pre-finished paper container formed by bonding. FIG. 5 is an explanatory diagram of a process of trimming the irregular outer periphery of the paper container formed by bonding.
[0018]
The method for manufacturing a paper container according to the embodiment of the present invention is a method for manufacturing the paper container 5 described above. As this manufacturing method, first, a necessary size of a container to be manufactured is cut out from the cut and opened paper pack, and the paper pack board 1 is obtained by thoroughly washing and sterilizing. This paper pack board 1 can be used by stacking a plurality of sheets when strength is required in view of the shape and purpose of use of the container.
[0019]
Next, regarding the material of the paper 2 that sandwiches the paper pack board 1 from above and below, even if there is a difference between virgin paper and recycled paper, there is no difference in bonding formation by heat melting with the paper pack board, and the purpose of use of the container It should be chosen considering the cost and cost. However, surface-treated paper with significantly reduced heat resistance should be avoided. In general, plain paper is suitable.
[0020]
In addition, in the case of a circular container having a diameter of 200 mm and a depth of 15 mm with respect to a thickness of about 0.5 mm of the paper pack board 1 that is a core material, 0.07 mm is appropriate for both side thicknesses. . However, the upper and lower molds of the paper pack board 1, which is the core material, can be formed on the upper side of 0.5mm thickness with 0.07mm thickness paper and the lower side with 0.6mm thickness wood sheet or both upper and lower surfaces with 0.6mm thickness wood sheet. By changing the clearance, fusion bonding is possible.
[0021]
The manufacturing method of the paper container 5 according to the present embodiment is such that the paper pack board 1 is sandwiched from both sides by the paper 2 and the core material and the upper and lower three paper boards are melt-bonded only by heat and compression without using an adhesive. Therefore, the heating temperature, the applied pressure, the pressurizing speed, and the pressurizing time humidity of the processed material are very important. Incidentally, in the case of the container having a diameter of 200 mm and a depth of 15 mm, a pressure of about 1800 kg and a pressure of about 7 seconds are appropriate in a mold heated to 150 ° C. to 180 ° C.
[0022]
The paper container that has been heated and pressurized by the above steps is taken out from the forming mold (Fig. 3) with an irregular outer periphery, and the outer periphery is trimmed by a finishing machine to complete the manufacture of the paper container. To do.
[0023]
【The invention's effect】
As described above, according to the paper container of claim 1 of the present invention, the thickness of the paper sandwiched from both sides is only 0.07 mm by using the paper pack board as a reinforcing material without using an adhesive. However, it is possible to provide a low-cost paper container that has a strength that does not shrink even when compared with containers made of other materials. The paper container can be provided in various shapes according to the purpose of use by changing the shape of the forming mold.
[0024]
In addition, according to the method for manufacturing a paper container according to claim 2, since it is a joint formation by melt-bonding using a waterproof layer that is the original physical property of a paper pack without using any adhesive, There is no problem in the natural environment. Even in the case of a reinforced container with a total of 3 sheets of paper pack board and double-sided paper, it is possible to omit the labor-consuming application work, in addition to the cost of purchasing adhesives. Thus, the manufacturing cost can be reduced.
[0025]
Further, since no adhesive is used, the physical properties of the paper pack board are not affected, and after use, it can be returned to the paper pack recycling route as a valuable resource.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a paper container according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a method for manufacturing a paper container according to an embodiment of the present invention, in which a paper pack plate is sandwiched from above and below, a heated forming mold is closed, and a pressurizing step is started.
FIG. 3 is an explanatory diagram of a heating and pressing state in the manufacturing method.
[Fig. 4] A paper container before finishing the outer periphery after the heating and pressurizing time has elapsed, and taking out the forming die. [Fig. 5] is an explanatory diagram of a process for trimming the irregular outer periphery of the paper container that has been joined and formed. is there.
[Explanation of symbols]
1 Paper pack board 2 Paper 3 Upper mold 4 Lower mold 5 Paper container 6 Heater incorporated in the mold

Claims (6)

熱可塑性樹脂のフィルムで防水ラミネート処理されている紙パック板を芯材として、その両面を複数の紙で挟み、金型を用いて加熱加圧して形成されたことを特徴とする紙製容器A paper container characterized in that it is formed by using a paper pack board that is waterproof laminated with a thermoplastic resin film as a core material, sandwiching both sides between a plurality of papers, and heating and pressing using a mold 熱可塑性樹脂のフィルムで防水ラミネート処理されている紙パック板を芯材として、その両面を複数の紙で挟み、金型を用いて加熱加圧して形成されたことを特徴とする紙製容器の製造方法A paper container made by waterproofing lamination with a thermoplastic resin film as a core material, sandwiching both surfaces between a plurality of papers, and heating and pressing using a mold Production method 接着剤を一切添加せず、紙パック板のラミネートフィルムの加熱溶融のみで接着されたことを特徴とする請求項1記載の紙製容器The paper container according to claim 1, wherein no adhesive is added, and the adhesive is made only by heating and melting the laminated film of the paper pack board. 接着剤を一切添加せず、紙パック板のラミネートフィルムの加熱溶融のみで接着することを特徴とする請求項2記載の紙製容器の製造方法3. The method for producing a paper container according to claim 2, wherein no adhesive is added and bonding is performed only by heating and melting the laminated film of the paper pack board. 紙パック板が、切り開いて洗浄殺菌された使用済みのものであることを特徴とする請求項1または請求項3記載の紙製容器4. The paper container according to claim 1, wherein the paper pack board is used after being cut open, washed and sterilized. 紙パック板が、切り開いて洗浄殺菌された使用済みのものであることを特徴とする請求項2または請求項4記載の紙製容器の製造方法5. The method for producing a paper container according to claim 2, wherein the paper pack board is used after being opened and washed and sterilized.
JP2003200213A 2003-07-23 2003-07-23 Paper-made container and method for manufacturing it Pending JP2005041488A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009130731A1 (en) * 2008-04-21 2009-10-29 Quality Tools S.R.L. Press and method in particular for the pressure forming of paper containers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009130731A1 (en) * 2008-04-21 2009-10-29 Quality Tools S.R.L. Press and method in particular for the pressure forming of paper containers
US8430802B2 (en) 2008-04-21 2013-04-30 Quality Tools S.R.L. Press and method in particular for the pressure forming of paper containers

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