JP3153322B2 - Manufacturing method of papermaking container - Google Patents
Manufacturing method of papermaking containerInfo
- Publication number
- JP3153322B2 JP3153322B2 JP10203892A JP10203892A JP3153322B2 JP 3153322 B2 JP3153322 B2 JP 3153322B2 JP 10203892 A JP10203892 A JP 10203892A JP 10203892 A JP10203892 A JP 10203892A JP 3153322 B2 JP3153322 B2 JP 3153322B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- papermaking
- net
- pulp
- pulp component
- 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
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は抄造容器の製造方法に関
する。The present invention relates to a method for producing a papermaking container.
【０００２】[0002]
【従来の技術】近年、家庭電化製品、精密機器類、或い
は食品等の包装用として、発泡合成樹脂材料よりなるも
のや、パルプ原料液を用いて所定形状に抄造したもの等
が用いられている。これらのうち、パルプを原料とした
ものは主として、小型電気製品や卵等の食品の包装用容
器として用いられている。2. Description of the Related Art In recent years, products made of foamed synthetic resin materials, products made into a predetermined shape using a pulp raw material liquid, and the like have been used for packaging home appliances, precision instruments, foods, and the like. . Of these, those made from pulp are mainly used as packaging containers for foods such as small electric appliances and eggs.
【０００３】従来、抄造法によって深底の容器を製造す
る場合、パルプ原料液中のパルプ成分を、所定の容器形
状に成形した抄造用ネット上に単に抄き取って脱水して
所定形状の抄造容器を得る方法が採用されていた。[0003] Conventionally, when a deep bottom container is manufactured by a papermaking method, a pulp component in a pulp raw material liquid is simply taken out on a papermaking net formed into a predetermined container shape, dewatered, and dewatered. A method of obtaining a container has been adopted.
【０００４】しかしながら、このような抄造法で製造さ
れた従来の深底の容器は、抄造用ネットと接していた側
の面は比較的平滑面となるものの、反対側の面（容器抄
造時の上面側）はパルプ成分が抄き取られたままの不規
則な凹凸面となっており、この凹凸面側が製品収納側と
なるように抄造した場合には、得られた容器中に製品を
安定して収納し難い欠点があり、逆に容器外側が凹凸面
側となるように抄造した場合には、容器外観の見栄えが
悪く、商品価値の低下を来す欠点があった。However, in the conventional deep-bottomed container manufactured by such a papermaking method, the surface on the side in contact with the papermaking net is relatively smooth, but the surface on the opposite side (during the container papermaking). (Upper side) is an irregular surface with the pulp component removed as it is, and if the paper is made so that the surface of the pulp becomes the product storage side, the product is stable in the resulting container. On the other hand, when the paper is made such that the outside of the container is on the side of the uneven surface, the appearance of the container is poor and the commercial value is reduced.
【０００５】また従来の抄造容器はプラスチック容器に
比べて著しく強度が低い欠点もあった。本発明は上記の
点に鑑みなされたもので、深底の抄造容器であって表裏
両面側共に平滑な表面を有し、強度的にも優れた深底の
抄造容器を提供することのできる抄造容器の製造方法を
提供することを目的とする。Further, the conventional papermaking container has a disadvantage that the strength is remarkably lower than that of the plastic container. The present invention has been made in view of the above, the depth a papermaking vessel bottom has both the front and back surfaces side both smooth surface, papermaking that can provide papermaking vessel strength also excellent deep An object of the present invention is to provide a method for manufacturing a container .
【０００６】[0006]
【課題を解決するための手段】即ち本発明の抄造容器の
製造方法は、容器形状に形成された抄造用ネット上に、
パルプ原料液中からパルプ成分を抄き取り、且つ該抄造
用ネット上に抄き取られたパルプ成分の上面側を、容器
形状に形成された弾性素材よりなる押圧型によって押圧
し、抄造用ネット上に抄き取られたパルプ成分中の水分
を脱水して抄造容器中間体を得、次いでこの抄造容器中
間体を容器形状を有するプレス型によって加熱下にプレ
スすることを特徴とする。また本発明の抄造容器の製造
方法は、容器形状に形成された抄造用ネット上に、パル
プ原料液中からパルプ成分を抄き取り、且つ該抄造用ネ
ット上に抄き取られたパルプ成分の上面側を、容器形状
に形成された弾性素材よりなる押圧型によって押圧して
抄造用ネット上に抄き取られたパルプ成分中の水分を脱
水し、ネット上に抄き取った状態のパルプ成分の見 掛け
厚みの０．１〜０．４倍の厚みの抄造容器中間体を得、
次いでこの抄造容器中間体を容器形状を有するプレス型
によって加熱下にプレスして、ネット上に抄き取った状
態のパルプ成分の見掛け厚みの０．０５〜０．３倍の厚
みの容器を得ることを特徴とする。 Means for Solving the Problems That is, the papermaking container of the present invention
The production method is on a papermaking net formed in a container shape,
Extracting pulp components from the pulp raw material liquid and forming the pulp
Put the top side of the pulp component collected on the
Pressed by a pressing die made of elastic material formed into a shape
And moisture in the pulp component collected on the papermaking net
To obtain a papermaking container intermediate, and then in this papermaking container
The body is pressed under heating by a press die having a container shape.
Characterized in that it nest. Production of the papermaking container of the present invention
The method involves placing a pallet on a papermaking net formed into a container shape.
A pulp component from the raw material liquid, and
The top side of the pulp component collected on the tray is shaped like a container.
Pressed by a pressing die made of elastic material formed on
Dewatering of pulp components extracted on a papermaking net
And water, hanging look of pulp component of the state that took the paper making on the net
A papermaking container intermediate having a thickness of 0.1 to 0.4 times the thickness is obtained,
Next, this papermaking container intermediate is pressed into a press mold having a container shape.
Pressed under heating by heating
0.05 to 0.3 times the apparent thickness of the raw pulp component
It is characterized in that it obtains only containers.
【０００７】本発明方法において、抄造容器中間体を加
熱下にプレスする工程を、雄型と雌型とのクリアランス
が順次小さくなるように構成した複数のプレス型によ
り、複数回に分けて行うことが好ましい。 In the method of the present invention, a papermaking container intermediate is added.
Pressing under heat, the clearance between male and female mold
Are reduced by a plurality of press dies
It is preferable to carry out the treatment in a plurality of times.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図面に基づき説明
する。An embodiment of the present invention will be described below with reference to the drawings.
【０００９】図１は本発明方法により得られる抄造容器
の一実施例の縦断面図を示すもので、同図に示すように
抄造容器１は、側壁２の立ち上がり角度：αが４５度以
上であり、且つ深さ：ｄが１５mm以上の深底の抄造容器
である。本発明方法により得られる抄造容器１は、密度
0.３ｇ／ｃｍ3以上であり、従来の抄造容器に比して非
常に高い密度を有する。FIG. 1 is a longitudinal sectional view of an embodiment of a papermaking container obtained by the method of the present invention. As shown in FIG. 1, the papermaking container 1 has a rising angle α of the side wall 2 of 45 ° or more. It is a deep-bottomed paper container having a depth d of 15 mm or more. The papermaking container 1 obtained by the method of the present invention has a density of
It is 0.3 g / cm 3 or more, and has a very high density as compared with a conventional papermaking container.
【００１０】本発明方法により得られる抄造容器１は、
パルプ原料液からパルプ成分を抄き取って所定形状に形
成してなるものであり、図１に示すように底部３には抄
造によって形成した凸部４と凹部５とからなる凹凸が形
成されている。この凸部４は図示したように、底部３の
１箇所のみに形成されていても複数箇所に形成されてい
ても良く、また全く形成されていなくとも良いが、本発
明方法により得られる容器１としては底部３の１個所以
上に凸部４が形成されている容器が好適である。この際
の凸部の高さは５mm乃至容器深さと同程度に形成するこ
とが望ましい。The papermaking container 1 obtained by the method of the present invention comprises:
The pulp component is formed by extracting a pulp component from a pulp raw material liquid to form a predetermined shape. As shown in FIG. 1, the bottom 3 is formed with irregularities including a convex portion 4 and a concave portion 5 formed by papermaking. I have. As the projections 4 shown, may be formed in a plurality of places be formed only in one place of the bottom 3, also it may not have been completely formed, the container 1 obtained by the method of the present invention A container in which the convex portion 4 is formed at one or more locations on the bottom portion 3 is preferable. In this case, it is desirable that the height of the convex portion is formed to be about 5 mm to the same level as the container depth.
【００１１】本発明方法により得られる容器１は、後述
する抄造の際にネットと接していた側（例えば容器外表
面側）が平滑面になっているとともに、抄造時にネット
と接していない上面側の面（容器内表面側）も平滑面と
なっている。本発明において、上記容器内表面が平滑で
あることは、当該表面側に抄き取られたパルプ成分の突
出による凹凸がないことを意味するものであり、表面に
微細な凹凸模様等を形成することを排除するものではな
い。The container 1 obtained by the method of the present invention has a smooth surface on the side which is in contact with the net (for example, the outer surface side of the container) at the time of paper-making described later, and has an upper surface which is not in contact with the net at the time of paper-making. (The inner surface side of the container) is also a smooth surface. In the present invention, the fact that the inner surface of the container is smooth means that there is no unevenness due to the protrusion of the pulp component collected on the surface side, and a fine uneven pattern or the like is formed on the surface. It does not exclude that.
【００１２】以下に、上記抄造容器１を製造する本発明
方法について説明する。 Hereinafter, the present invention for producing the above-mentioned papermaking container 1 will be described.
The method will be described.
【００１３】図２において６は容器１の抄造装置を示
し、該装置６は所定形状（図２の例では抄造しようとす
る容器の外面形状）に形成された抄造用ネット７と、該
ネット７の外形状に略合致した内形状を持ち、その壁面
や底面等に水が透過できる複数の貫通孔が形成された、
ネット７を保持する金型（図示せず）、及び該金型を支
持する支持フレーム８と、所定形状（図２の例では抄造
しようとする容器の内面形状に略合致した形状）に形成
された弾性素材よりなる押圧型９とから構成されてい
る。In FIG. 2, reference numeral 6 denotes a papermaking apparatus for the container 1. The apparatus 6 includes a papermaking net 7 formed in a predetermined shape (in the example of FIG. 2, the outer shape of the container to be papered), and the net 7 It has an inner shape that roughly matches the outer shape of the device, and a plurality of through holes through which water can permeate are formed on its wall surface and bottom surface,
A mold (not shown) for holding the net 7, a support frame 8 for supporting the mold, and a predetermined shape (in the example of FIG. 2, a shape substantially matching the inner surface shape of the container to be made). And a pressing die 9 made of an elastic material.
【００１４】上記装置６において抄造容器１を製造する
場合、まず抄造用ネット７上に、パルプ原料液中のパル
プ成分を抄き取る。パルプ原料液からパルプ成分を抄き
取る方法としては、抄造用ネット７上にパルプ原料液を
注加してネット上にパルプ成分を抄き取る方法、ネット
７を取り付けたフレーム８全体をパルプ原料液槽中に浸
漬し、必要に応じてネット下方より真空吸引してパルプ
原料液の水分の一部又は多くをネット７を通して流出さ
せた後、フレーム８を上昇させてパルプ原料液中のパル
プ成分をネット７上に抄き取る方法等が挙げられる。When the papermaking container 1 is manufactured by the above-mentioned apparatus 6, first, the pulp component in the pulp raw material liquid is papered on a papermaking net 7. As a method of extracting a pulp component from a pulp raw material solution, a method of pouring a pulp raw material solution onto a papermaking net 7 to extract a pulp component on the net, a method of removing the entire frame 8 to which the net 7 is attached from a pulp raw material. After being immersed in the liquid tank and, if necessary, vacuum-suctioned from below the net to drain a part or much of the water content of the pulp raw material liquid through the net 7, the frame 8 is raised and the pulp component in the pulp raw material liquid is raised. On the net 7.
【００１５】本発明において、上記パルプ原料液として
は、従来公知のパルプ原料液や、この中に各種添加剤を
加えたもの等が使用される。尚、パルプ原料液は、回収
紙を利用した再生パルプ原料液が全成分を占めていて
も、一部を占めていても何ら差支えない。In the present invention, as the pulp raw material liquid, a conventionally known pulp raw material liquid, a liquid obtained by adding various additives thereto, and the like are used. In addition, the pulp raw material liquid does not matter at all whether the recycled pulp raw material liquid using the recovered paper occupies all the components or occupies a part thereof.
【００１６】抄造用ネット７としてはパルプ原料中の水
分は通過させるがパルプ成分は通過させないものが使用
され、パルプ原料中の水分は抄造用ネット７を通過して
除去される結果、抄造用ネット７上にパルプ成分が抄き
取られる。抄造用ネット７上に抄き取られるパルプ成分
の量は、パルプ原料中の繊維濃度やネット上に抄き取る
際に必要に応じて行われる真空吸引時間によって調整す
ることができる。As the papermaking net 7, one that allows the water in the pulp raw material to pass but not the pulp component is used. As a result, the water in the pulp raw material is removed by passing through the papermaking net 7. The pulp component is ground on 7. The amount of the pulp component to be taken out on the papermaking net 7 can be adjusted by the fiber concentration in the pulp raw material or the vacuum suction time that is performed as needed when the paper is made on the net.
【００１７】抄造用ネット７は上記したようにパルプ原
料中の水分は通過させるがパルプ成分は通過させない程
度のメッシュのものであれば使用可能であるが、目が荒
過ぎると抄造される容器１のネット７側の面にネットの
跡が明瞭に残って外観を低下させる虞があり、逆にネッ
ト７の目が細か過ぎると目詰まりを生じやすいため、１
５〜８０メッシュ程度のものを用いることが好ましい。As described above, the papermaking net 7 can be used as long as it has a mesh that allows moisture in the pulp raw material to pass through but does not allow pulp components to pass through. There is a concern that the traces of the net 7 may clearly remain on the surface on the side of the net 7 to degrade the appearance. Conversely, if the net 7 is too fine, clogging tends to occur.
It is preferable to use one having about 5 to 80 mesh.
【００１８】このようにして抄造用ネット７上にパルプ
原料液中のパルプ成分を抄き取った後、上面側より押圧
型９によって押圧し、更に抄造用ネット７の下面側を減
圧して抄き取ったパルプ原料中の水分を脱水し、含水率
３０〜７０％程度の抄造容器中間体１０を得る。After the pulp component in the pulp raw material liquid has been removed from the papermaking net 7 in this manner, the pulp component is pressed from the upper surface by a pressing die 9 and the lower surface of the papermaking net 7 is further reduced in pressure to obtain the paper. The moisture in the pulp raw material is dehydrated to obtain a papermaking container intermediate 10 having a water content of about 30 to 70%.
【００１９】上記押圧型９としては、弾性素材を所定の
形状に形成したものが用いられ、このような弾性素材と
しては例えば、ゴム、弾性合成樹脂、合成樹脂発泡体等
を用いることができる。また押圧型９による押圧は抄造
容器中間体１０の厚みが、ネット上にパルプ成分を抄き
取った状態の見掛け厚みを１００とした場合に、１０〜
４０の厚み（ネット上に抄き取った状態のパルプ成分の
見掛け厚みの０．１〜０．４倍の厚み）となるように行
うことが好ましく、抄造用ネット７の下面側を減圧する
場合、減圧条件は、７００〜１０mmＨｇ程度が好まし
い。The pressing die 9 is formed by forming an elastic material into a predetermined shape. As such an elastic material, for example, rubber, elastic synthetic resin, synthetic resin foam or the like can be used. Pressing by pressing die 9 is papermaking.
The thickness of the container intermediate 10 is 10 to 10 when the apparent thickness of the pulp component on the net is 100.
40 thickness (of the pulp component taken out on the net)
The thickness is preferably 0.1 to 0.4 times the apparent thickness). When the pressure on the lower surface side of the papermaking net 7 is reduced, the pressure reduction condition is preferably about 700 to 10 mmHg.
【００２０】このようにして得た抄造容器中間体１０
は、次に加熱プレス工程に移される。加熱プレス工程で
は、例えば図３に示すように抄造容器中間体１０の外面
形状を有する雌型１１と、抄造容器中間体１０の内面形
状を有する雄型１２とによって容器中間体１０を挟んで
加熱下にプレスする。この、加熱プレス条件は、加熱温
度１００〜２５０℃、プレス時間５〜２００秒程度が好
ましい。加熱プレス工程は１回に限らず、数回に別けて
行うことが望ましい。加熱プレス工程を数回に別けて行
う場合、後の加熱プレス工程ほど雄型１２と雌型１１と
のクリアランス（隙間）を僅かずつ小さくすることが好
ましい。そして最終製品の厚みが、ネット上にパルプ成
分を抄き取った状態の見掛け厚みを１００とした場合
に、５〜３０の厚み（ネット上に抄き取った状態のパル
プ成分の見掛け厚みの０．０５〜０．３倍の厚み）とな
るように加熱プレスすることが好ましい。また、これら
金型には水分の透過できる微細な貫通孔を複数形成させ
ておくこともでき、更に該貫通孔から金型内を吸引する
こともできる。The papermaking container intermediate 10 thus obtained
Is then transferred to the hot pressing step. In the heating press step, for example, as shown in FIG. 3, a female mold 11 having an outer surface shape of the papermaking container intermediate 10 and a male mold 12 having an inner surface shape of the papermaking container intermediate 10 heat the container intermediate 10 therebetween. Press down. The heating press conditions are preferably a heating temperature of 100 to 250 ° C. and a pressing time of about 5 to 200 seconds. It is desirable that the heating press step is performed not only once but also separately in several times. When the heating press step is performed several times, it is preferable that the clearance (gap) between the male mold 12 and the female mold 11 is gradually reduced in the later heating press step. The thickness of the final product, when the apparent thickness of a state of taking the pulp component on the net 100, of paper making took state on 5-30 thick (Net Pal
It is preferable that the hot pressing is performed so that the apparent thickness of the pressing component is 0.05 to 0.3 times the apparent thickness . In addition, a plurality of fine through holes through which moisture can pass can be formed in these molds, and the inside of the mold can be sucked from the through holes.
【００２１】以上の如く、先ず抄造用ネット７によって
抄き取ったパルプ原料の上面側を弾性素材よりなる押圧
型で押圧し、抄き取ったパルプ原料中の水分を脱水して
抄造容器中間体を得、次いでこの抄造容器中間体を更に
加熱プレスすることにより、抄造時の上面側の表面が平
滑面となり、密度０．３ｇ／ｃｍ3、好ましくは０．３
５〜０．９ｇ／ｃｍ3を有する抄造容器１が得られる。As described above, first, the upper surface side of the pulp raw material extracted by the papermaking net 7 is pressed by a pressing die made of an elastic material, and the moisture in the extracted pulp raw material is dehydrated to form a paper container intermediate. Then, the intermediate body of the papermaking container is further heated and pressed, so that the surface on the upper surface side during papermaking becomes smooth, and the density is 0.3 g / cm 3 , preferably 0.3 g / cm 3 .
A papermaking container 1 having a weight of 5 to 0.9 g / cm 3 is obtained.
【００２２】以下に具体的実施例を挙げて本発明を更に
詳細に説明する。Hereinafter, the present invention will be described in more detail with reference to specific examples.
【００２３】実施例１ 深さ：ｄ＝４．５ｃｍ、側壁の立ち上がり角度：α＝８
５°である図１に示したと同形状の容器１（凸部４の高
さ３．５ｃｍ、幅２．５ｃｍ）を、図２に示したと同様
の装置によって製造した。使用した装置の抄造用ネット
７としては４０メッシュの網を成形したものを用い、押
圧型９としてはシリコンゴムよりなるものを用いた。パ
ルプ原料液として繊維素濃度０．５％のものを使用し、
このパルプ原料液中に抄造用ネット７をネット保持金型
を介してフレーム８に取り付けたまま、５秒間浸漬し
た。次いでネット７を原料液中から引上げた。この時の
抄き取られたパルプ成分の見掛け厚みは約４．５ｍｍで
あった。続いて、ネット７上に抄き取られたパルプ成分
の上面側を押圧型９によって押圧する一方、ネット７の
下面側を２００ｍｍＨｇに減圧した。この中間体の厚み
は約３ｍｍであった。Example 1 Depth: d = 4.5 cm, rising angle of side wall: α = 8
A container 1 having a shape of 5 ° and the same shape as shown in FIG. 1 (the height of the convex portion 4 was 3.5 cm and the width was 2.5 cm) was manufactured by the same apparatus as shown in FIG. As the papermaking net 7 of the used apparatus, a net formed with a 40-mesh net was used, and as the pressing die 9, a net made of silicone rubber was used. Use a pulp material liquid with a fiber concentration of 0.5%,
The papermaking net 7 was immersed in the pulp raw material liquid for 5 seconds while being attached to the frame 8 via a net holding mold. Next, the net 7 was pulled out of the raw material liquid. At this time, the apparent thickness of the extracted pulp component was about 4.5 mm. Subsequently, the upper side of the pulp component collected on the net 7 was pressed by the pressing die 9, while the lower side of the net 7 was decompressed to 200 mmHg. The thickness of this intermediate was about 3 mm.
【００２４】このようにして得た抄造容器中間体１０
を、図３に示すと同様の雌型１１及び雄型１２によって
挟んで１０秒間加熱プレスした。この時の雌型１１及び
雄型１２の温度は１７０℃、プレス後の厚みは約２ｍｍ
であった。更に同様の加熱プレス工程を引続き２工程行
った。プレス後の抄造容器の厚みは、第２プレス後約
１．２ｍｍ、第３プレス後約０．７ｍｍであった。この
ようにして得られた抄造容器は密度０．４ｇ／ｃｍ3で
あり、容器内面及び外面の平滑性に優れていた。次に容
器開口部の全面を覆うように、重さ１５ｋｇの鉄板を容
器上面に静かに置いたところ、容器はこの重さに充分耐
え得るものであった。The papermaking container intermediate 10 thus obtained
Was heated and pressed for 10 seconds between the female mold 11 and the male mold 12 as shown in FIG. At this time, the temperature of the female mold 11 and the male mold 12 is 170 ° C., and the thickness after pressing is about 2 mm.
Met. Further, two similar heating press steps were successively performed. The thickness of the papermaking container after the press was about 1.2 mm after the second press and about 0.7 mm after the third press. The papermaking container thus obtained had a density of 0.4 g / cm 3 and was excellent in smoothness on the inner and outer surfaces of the container. Next, an iron plate weighing 15 kg was gently placed on the upper surface of the container so as to cover the entire surface of the container opening, and the container could sufficiently withstand this weight.
【００２５】比較例１ 加熱プレスを行わなかった他は実施例１と同様にして抄
造容器を得た。この容器はシリコンゴム型で押圧した側
の面の平滑性は優れていたが、ネットと接した側の面に
はネットの跡がくっきりと残っていた。得られた容器の
密度は０．２８ｇ／ｃｍ3であり、この容器上面に実施
例１と同様に重さ１５ｋｇの鉄板を静かに置いたとこ
ろ、容器は潰れてしまい、強度が実施例１の容器より劣
っていることが認められた。Comparative Example 1 A papermaking container was obtained in the same manner as in Example 1 except that the heating press was not performed. This container had excellent smoothness on the side pressed with a silicone rubber mold, but traces of the net remained clearly on the side in contact with the net. The density of the obtained container was 0.28 g / cm 3. When an iron plate having a weight of 15 kg was gently placed on the upper surface of the container in the same manner as in Example 1, the container was crushed, and the strength was as in Example 1. It was found to be inferior to the container.
【００２６】[0026]
【発明の効果】以上説明したように本発明方法によれ
ば、容器の表裏両面側が平滑で、曲げ強度、剛性等の機
械的強度に優れる高い密度の深底の抄造容器を製造する
ことができる。本発明方法により得られる抄造容器は、
容器内に製品を安定して収納できるとともに容器外観も
優れ、商品価値の高い容器である。As described above , according to the method of the present invention,
For example, if the front and back sides of the container are smooth,
Manufacture high-density deep-bottomed paper containers with excellent mechanical strength
be able to. The papermaking container obtained by the method of the present invention ,
The product can be stably stored in the container and the appearance of the container is excellent.
【図１】本発明方法により得られる抄造容器の一例を示
す縦断面図である。FIG. 1 is a longitudinal sectional view showing an example of a papermaking container obtained by the method of the present invention.
【図２】本発明の抄造容器の製造方法における一工程を
示す縦断面図である。FIG. 2 is a longitudinal sectional view showing one step in the method for producing a papermaking container of the present invention.
【図３】本発明の抄造容器の製造方法における他の工程
を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing another step in the method for producing a papermaking container of the present invention.
１ 抄造容器 ２ 側壁 ３ 底部 ４ 凸部 ７ 抄造用ネット ９ 押圧型 10 抄造容器中間体 11 雌型 12 雄型 DESCRIPTION OF SYMBOLS 1 Papermaking container 2 Side wall 3 Bottom part 4 Convex part 7 Papermaking net 9 Pressing type 10 Papermaking container intermediate 11 Female type 12 Male type
フロントページの続き (56)参考文献 特開 昭63−227900（ＪＰ，Ａ) 特開 昭51−2577（ＪＰ，Ａ) 特開 平５−156600（ＪＰ，Ａ) 特公 昭58−34346（ＪＰ，Ｂ２) 特公 昭35−13236（ＪＰ，Ｂ１) 特公 昭35−9669（ＪＰ，Ｂ１) 特公 昭39−151（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) D21J 1/00 - 7/00 Continuation of the front page (56) References JP-A-63-227900 (JP, A) JP-A-51-2577 (JP, A) JP-A-5-156600 (JP, A) JP-B-58-34346 (JP, A) , B2) JP-B 35-13236 (JP, B1) JP-B 35-9669 (JP, B1) JP-B 39-151 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB Name) D21J 1/00-7/00
Claims (3)
に、パルプ原料液中からパルプ成分を抄き取り、且つ該
抄造用ネット上に抄き取られたパルプ成分の上面側を、
容器形状に形成された弾性素材よりなる押圧型によって
押圧し、抄造用ネット上に抄き取られたパルプ成分中の
水分を脱水して抄造容器中間体を得、次いでこの抄造容
器中間体を容器形状を有するプレス型によって加熱下に
プレスすることを特徴とする抄造容器の製造方法。 1. A papermaking net formed in a container shape.
Then, the pulp component is extracted from the pulp raw material liquid, and
The upper surface side of the pulp component that has been removed on the papermaking net,
By pressing type made of elastic material formed in container shape
Pressing, in the pulp component papered on the papermaking net
The water is dehydrated to obtain a papermaking container intermediate, and then the papermaking container
The container intermediate is heated by a press mold having a container shape.
A method for producing a papermaking container, comprising pressing.
に、パルプ原料液中からパルプ成分を抄き取り、且つ該
抄造用ネット上に抄き取られたパルプ成分の上面側を、
容器形状に形成された弾性素材よりなる押圧型によって
押圧して抄造用ネット上に抄き取られたパルプ成分中の
水分を脱水し、ネット上に抄き取った状態のパルプ成分
の見掛け厚みの０．１〜０．４倍の厚みの抄造容器中間
体を得、次いでこの抄造容器中間体を容器形状を有する
プレス型によって加熱下にプレスして、ネット上に抄き
取った状態のパルプ成分の見掛け厚みの０．０５〜０．
３倍の厚みの容器を得ることを特徴とする抄造容器の製
造方法。 2. A papermaking net formed in a container shape.
Then, the pulp component is extracted from the pulp raw material liquid, and
The upper surface side of the pulp component that has been removed on the papermaking net,
By pressing type made of elastic material formed in container shape
In the pulp component that was pressed and pressed onto a papermaking net
Pulp components in a state where water is dehydrated and extracted on a net
Middle of a papermaking container with a thickness of 0.1 to 0.4 times the apparent thickness of
Body, then this papermaking container intermediate has a container shape
Press under heat with a press mold and make it on a net
0.05 to 0.1 of the apparent thickness of the pulp component as taken.
Manufacture of a papermaking container characterized by obtaining a container three times thicker
Construction method.
程を、雄型と雌型とのクリアランスが順次小さくなるよ
うに構成した複数のプレス型により、複数回に分けて行
う請求項１又は２記載の抄造容器の製造方法。 3. A process for pressing an intermediate of a papermaking container under heating.
In the process, the clearance between the male and female types will gradually decrease
With multiple press dies
A method for producing a papermaking container according to claim 1 or 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10203892A JP3153322B2 (en) | 1992-03-27 | 1992-03-27 | Manufacturing method of papermaking container |
| EP93104918A EP0562590A1 (en) | 1992-03-27 | 1993-03-25 | Molded pulp product and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10203892A JP3153322B2 (en) | 1992-03-27 | 1992-03-27 | Manufacturing method of papermaking container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05279998A JPH05279998A (en) | 1993-10-26 |
| JP3153322B2 true JP3153322B2 (en) | 2001-04-09 |
Family
ID=14316606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10203892A Expired - Lifetime JP3153322B2 (en) | 1992-03-27 | 1992-03-27 | Manufacturing method of papermaking container |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0562590A1 (en) |
| JP (1) | JP3153322B2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999057373A1 (en) * | 1998-05-07 | 1999-11-11 | Kao Corporation | Formed body |
| CN1105807C (en) * | 1998-05-07 | 2003-04-16 | 花王株式会社 | Formed body |
| CN1167851C (en) | 1998-12-28 | 2004-09-22 | 花王株式会社 | Formed body |
| US6576089B1 (en) | 1999-03-26 | 2003-06-10 | Kao Corporation | Paper making mold for pulp mold molding production and method and device for producing pulp mold molding |
| JP3909986B2 (en) * | 1999-08-09 | 2007-04-25 | 花王株式会社 | Pulp molded body |
| SE529164C2 (en) | 2004-11-26 | 2007-05-22 | Pakit Int Trading Co Inc | Pulp form and use of pulp form |
| SE528685C2 (en) * | 2004-11-26 | 2007-01-23 | Pakit Int Trading Co Inc | Method and machine for making fiber products of stock |
| SE529897C2 (en) | 2006-03-27 | 2007-12-27 | Rottneros Ab | Molded trough |
| JP5687429B2 (en) * | 2010-02-02 | 2015-03-18 | 東洋アルミエコープロダクツ株式会社 | Method for producing pulp molded product |
| CN105019316B (en) * | 2015-07-31 | 2017-04-19 | 佛山市必硕机电科技有限公司 | Dynamic and static ring structure of molded pulp rotating hub machine |
| CN109706795A (en) * | 2019-01-17 | 2019-05-03 | 永发（江苏）模塑包装科技有限公司 | A kind of two-sided high glossy paper pulp moulding product formation system and forming method |
| CN111691238B (en) * | 2020-06-18 | 2021-06-08 | 广州市南亚纸浆模塑设备有限公司 | Paper pulp model testing machine integrating paper pulp making, forming and drying |
| EP4098420A1 (en) * | 2021-05-31 | 2022-12-07 | Rottneros Packaging AB | Compression moulding tool and method for manufacturing a fibrous pulp tray using the tool |
| CN114592382A (en) * | 2022-03-22 | 2022-06-07 | 宁波新路智能科技有限公司 | Switch socket packaging box and manufacturing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1260470A (en) * | 1960-06-22 | 1961-05-05 | Diamond National Corp | Method and device for manufacturing egg cartons molded from pulp |
| FR1288923A (en) * | 1961-02-17 | 1962-03-30 | Henry Boucher Fils & Cie S A R | Cultivation bucket for plant and its manufacture |
| US4152203A (en) * | 1976-08-27 | 1979-05-01 | Diamond International Corporation | Method of warpage control for molded fiber trays |
-
1992
- 1992-03-27 JP JP10203892A patent/JP3153322B2/en not_active Expired - Lifetime
-
1993
- 1993-03-25 EP EP93104918A patent/EP0562590A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0562590A1 (en) | 1993-09-29 |
| JPH05279998A (en) | 1993-10-26 |
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