JPH08209600A - Cylindrical unit comprising fiber material and its production - Google Patents
Cylindrical unit comprising fiber material and its productionInfo
- Publication number
- JPH08209600A JPH08209600A JP30736095A JP30736095A JPH08209600A JP H08209600 A JPH08209600 A JP H08209600A JP 30736095 A JP30736095 A JP 30736095A JP 30736095 A JP30736095 A JP 30736095A JP H08209600 A JPH08209600 A JP H08209600A
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- Prior art keywords
- cylindrical body
- curved
- lower mold
- convex
- plate material
- 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.)
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、古紙等を原材料とする
パルプ繊維等の繊維材料から成る円筒体及びその製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical body made of fibrous material such as pulp fiber made of waste paper as a raw material and a method for producing the cylindrical body.
【0002】[0002]
【従来の技術】近年、資源の有効利用の観点から、古紙
の再生利用が進められている。この古紙の再生利用にお
いては、まず、古紙を裁断して水に溶かすことにより、
繊維材料としてのパルプ繊維を分散した懸濁液(以下、
パルプ液という)が製造され、そのパルプ液から適当な
加工工程を経て種々の紙製品が製造される。該パルプ液
には、必要に応じてヴァ─ジンパルプが添加される場合
もある。2. Description of the Related Art In recent years, recycling of used paper has been promoted from the viewpoint of effective use of resources. In recycling this used paper, first cut the used paper and dissolve it in water.
A suspension in which pulp fibers as a fiber material are dispersed (hereinafter,
Pulp liquor) is produced, and various paper products are produced from the pulp liquor through appropriate processing steps. If necessary, virgin pulp may be added to the pulp liquid.
【0003】ところで、紙製品にあっては、円筒形状の
ものが、剛性上の利点等の大きいことから各種産業分野
における利用性が比較的高い。そして、このような円筒
体を製造する場合、従来は、薄膜帯状の紙帯を用い、そ
れを棒状のものに巻回していくことにより前記円筒体を
製造するのが一般的である。By the way, as for paper products, cylindrical products are relatively high in applicability in various industrial fields because of great advantages in rigidity and the like. In the case of manufacturing such a cylindrical body, conventionally, the cylindrical body is generally manufactured by using a thin paper strip-shaped paper strip and winding it around a rod-shaped strip.
【0004】しかしながら、このような円筒体の製造方
法では、多くの加工工程が必要となって、製造効率が悪
く、また、コスト的にも不利なものとなり易い。However, such a method of manufacturing a cylindrical body requires many processing steps, resulting in poor manufacturing efficiency and a disadvantage in terms of cost.
【0005】このため、本願発明者等は、古紙を再利用
するためにパルプ液を用い、図7に示すように、円筒体
を縦割2分割してなる二つの半円筒体a,aを幅方向に
並列させて連設した形の板材bを、下型c及び上型dを
備えた金型を用いて前記パルプ液から一体成形し、次い
で、前記半円筒体a,aの連設箇所を折り目部eとし
て、同図矢印Xで示すように板材bを折り返し、該板材
bの両側縁を接合することにより、円筒体を製造するこ
とを試みた。この場合、下型cには、半円筒体a,aに
対応した凸条成形面f,fが設けられ、該成形面f,f
上に前記パルプ液を付着させる。そして、その後に、下
型cの成形面f,fと嵌合する凹条成形面g,gを有す
る上型dを下型cに嵌合させて加圧し、この状態で前記
パルプ液中から水分を吸引除去したり、加熱することに
より、下型c及び上型d間に前記板材bを成形する。For this reason, the inventors of the present application used a pulp liquid to reuse the waste paper and, as shown in FIG. 7, form two semi-cylindrical bodies a, a which are obtained by vertically dividing the cylindrical body into two. A plate material b having a shape of being arranged in parallel in the width direction is integrally formed from the pulp liquid by using a mold having a lower mold c and an upper mold d, and then the semicylindrical bodies a and a are continuously arranged. An attempt was made to manufacture a cylindrical body by folding back the plate material b as shown by the arrow X in the figure and joining the both side edges of the plate material b with the fold points e. In this case, the lower mold c is provided with ridge forming surfaces f, f corresponding to the semi-cylindrical bodies a, a.
The pulp liquid is attached on top. Then, thereafter, the upper mold d having the grooved molding surfaces g, g that fit with the molding surfaces f, f of the lower mold c is fitted into the lower mold c and pressurized, and in this state, from the pulp liquid. The plate material b is formed between the lower mold c and the upper mold d by removing water by suction or heating.
【0006】しかしながら、かかる手法は、次のような
不都合を生じるものであった。However, this method has the following disadvantages.
【0007】すなわち、前記下型cの各凸条成形面f
は、断面半円弧状であるため、その両側面がほぼ垂直な
急斜面となる。そして、前記パルプ液は水分を含む液質
状のものであるため、各凸条成形面fに付着されるパル
プ液の水分はパルプ繊維と共に、各凸条成形面fの頂部
からその両側に流動し易い。このため、特に凸条成形面
f,fの間の箇所にあっては、その両側の凸条成形面
f,fからパルプ繊維が流動し、多くのパルプ繊維が溜
まり易い。この状態で、前記上型dとの間で前記板材b
を成形すると、凸条成形面f,fの間の箇所(板材bの
折り目部eの箇所)で、該板材bの肉厚が他の箇所に較
べて厚くなり、その結果、該板材bから形成される円筒
体の肉厚が不均一なものとなってしまう。That is, each convex strip forming surface f of the lower mold c
Has a semi-circular cross section, and therefore both side surfaces are steep slopes that are substantially vertical. Since the pulp liquid is a liquid containing water, the water content of the pulp liquid attached to each of the ridge forming surfaces f flows from the top of each ridge forming surface f to both sides thereof together with the pulp fibers. Easy to do. For this reason, particularly at the location between the ridge forming surfaces f, f, the pulp fibers flow from the ridge forming surfaces f, f on both sides thereof, and a large amount of pulp fibers are likely to accumulate. In this state, the plate material b between the upper die d
Is formed, the thickness of the plate material b becomes thicker at a portion between the ridge forming surfaces f (the portion of the fold portion e of the plate material b) than other portions, and as a result, from the plate material b. The thickness of the formed cylindrical body becomes uneven.
【0008】また、上記のように特に肉厚が厚くなる箇
所は、板材bの折り目部eであると共に、該折り目部e
で板材bを折り返して円筒体を形成する際の折り返し角
度は、180°の大きな角度であるため、その折り返し
の際に、板材bの折り目部eの箇所で亀裂が生じやす
い。Further, the portion where the wall thickness becomes particularly thick as described above is the fold portion e of the plate material b and the fold portion e.
Since the folding angle when the plate material b is folded back to form a cylindrical body is a large angle of 180 °, cracks are likely to occur at the fold points e of the plate material b during the folding back.
【0009】さらに、前記上型dにあっては、その凹条
成形面g,gの間の箇所hが非常に鋭角的なものとなる
ため、破損を生じやすい。Further, in the upper mold d, the portion h between the concave line molding surfaces g has a very acute angle, so that the upper mold d is easily damaged.
【0010】[0010]
【発明が解決しようとする課題】本発明はパルプ繊維等
の繊維材料から成る板材の両側縁を接合して形成される
円筒体において、該板材から円筒体を形成する際に亀裂
等の不都合を生じるのを防止することができる円筒体を
提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention provides a cylindrical body formed by joining both side edges of a plate material made of a fiber material such as pulp fiber. When the cylindrical body is formed from the plate material, problems such as cracks occur. It is an object of the present invention to provide a cylindrical body which can be prevented from occurring.
【0011】また、本発明は均一な肉厚の円筒体を容易
且つ良好に製造することができる円筒体の製造方法を提
供することを目的とする。Another object of the present invention is to provide a method of manufacturing a cylindrical body which can easily and satisfactorily manufacture a cylindrical body having a uniform wall thickness.
【0012】[0012]
【課題を解決するための手段】本発明の繊維材料から成
る円筒体はかかる目的を達成するために、繊維材料から
成る板材の両側縁を接合して形成される円筒体におい
て、前記板材は前記円筒体の周長方向となる幅方向に間
隔を存して設けた複数の折り目部と、該折り目部を介し
て幅方向に並列して連設された少なくとも三つの断面円
弧状の湾曲部とにより構成され、該板材を前記各折り目
部で各湾曲部の湾曲方向に折り返しつつ該板材の両側縁
を接合してなることを特徴とする。In order to achieve such an object, a cylindrical body made of a fibrous material of the present invention is a cylindrical body formed by joining both side edges of a plate made of a fibrous material. A plurality of folds provided at intervals in the width direction, which is the circumferential direction of the cylindrical body, and at least three curved portions having arcuate cross-sections, which are arranged in parallel in the width direction via the folds. The plate member is folded back in the bending direction of each bending portion at each of the folds, and both side edges of the plate member are joined together.
【0013】本発明の繊維材料から成る円筒体によれ
ば、前記板材は三つ以上の断面円弧状の湾曲部により構
成されているので、該板材から前記円筒体を形成する際
に、それらの湾曲部の間の前記折り目部で板材を折り返
す角度は比較的小さなものとなる。それにより、該折り
目部の箇所で亀裂等の不都合が生じるのを防止すること
ができる。According to the cylindrical body made of the fibrous material of the present invention, since the plate member is composed of three or more curved portions having an arcuate cross section, when the plate member is formed into the cylindrical member, The angle at which the plate material is folded back at the folds between the curved portions is relatively small. As a result, it is possible to prevent the occurrence of inconveniences such as cracks at the folds.
【0014】また、本発明の繊維材料からなる円筒体の
製造方法は前記の目的を達成するために、繊維材料から
成る円筒体の製造方法において、少なくとも三つの断面
円弧状の凸条湾曲成形面を幅方向に並列させて連設して
なる成形面を有する下型と該下型の各凸条湾曲成形面と
嵌合する凹条湾曲成形面を有する上型とを用い、前記下
型の成形面上に繊維材料を分散させた懸濁液を塗布する
工程と、該懸濁液により繊維材料を付着させた下型に前
記上型を嵌合させて該繊維材料を加圧する工程と、該加
圧状態で前記懸濁液の水分を除去しつつ加熱し、前記下
型の各凸条湾曲成形面の位置にその形状に対応した湾曲
部を有する繊維材料から成る板材を該下型と上型との間
に成形する工程と、成形された板材を前記湾曲部同士の
間の側縁で折り返しつつ該板材の両側縁を接合すること
により前記円筒体を得る工程とからなることを特徴とす
る。In order to achieve the above-mentioned object, the method for producing a cylindrical body made of a fiber material according to the present invention is the same as the method for producing a cylindrical body made of a fiber material, in which at least three convex-curved curved surfaces having arcuate cross sections are formed. Of the lower mold using a lower mold having a molding surface formed by arranging in parallel in the width direction and an upper mold having a concave curved molding surface that fits with each convex curved molding surface of the lower mold. A step of applying a suspension in which a fiber material is dispersed on a molding surface, and a step of fitting the upper mold to a lower mold to which the fiber material is attached by the suspension and pressurizing the fiber material, A plate material made of a fibrous material having a curved portion corresponding to the shape at the position of each convex curve forming surface of the lower mold is heated while removing water of the suspension in the pressurized state, The step of forming between the upper mold and the formed plate is folded back at the side edge between the curved parts. By joining opposite side edges of the plate material while characterized by comprising the step of obtaining the cylindrical body.
【0015】本発明の繊維材料からなる円筒体の製造方
法によれば、前記板材の断面円弧状の湾曲部を成形する
ための前記下型の凸条湾曲成形面が三つ以上備えられて
いるので、各凸条湾曲成形面の頂部からその隣の凸条湾
曲成形面との間の側縁に至る円弧面の傾斜が比較的緩や
かなものとなるため、前記下型の成形面上に付着される
前記懸濁液中の繊維材料が各凸条湾曲成形面の頂部から
凸条湾曲成形面同士の間の箇所に流動するのが抑制され
る。これにより前記板材の肉厚を均一なものとすること
ができ、ひいては該板材から、均一な肉厚の円筒体を容
易且つ良好に製造することができる。According to the method for manufacturing a cylindrical body made of a fibrous material of the present invention, three or more ridge curved molding surfaces of the lower die for molding a curved portion having an arc-shaped cross section of the plate material are provided. Therefore, the inclination of the arc surface from the top of each convex curve forming surface to the side edge between the adjacent convex curve forming surfaces becomes relatively gentle, so that it adheres to the forming surface of the lower mold. The fibrous material in the suspension is prevented from flowing from the top of each convex curve forming surface to a portion between the convex curve forming surfaces. As a result, the thickness of the plate material can be made uniform, and thus a cylindrical body having a uniform thickness can be easily and satisfactorily manufactured from the plate material.
【0016】そして、本発明の繊維材料からなる円筒体
の製造方法においては、前記下型の凸条湾曲成形面の個
数は三個であり、それらの凸条湾曲成形面の中央に位置
する凸条湾曲成形面は、その断面が略平坦な円弧状とな
るよう短い幅に形成されていることを特徴とする。In the method for manufacturing a cylindrical body made of the fibrous material of the present invention, the number of the convex curve forming surfaces of the lower mold is three, and the convex shape located at the center of the convex curve forming surfaces. The ridge-curving surface is characterized in that it is formed with a short width so that its cross section has a substantially flat arc shape.
【0017】このように、前記凸条湾曲成形面の個数を
3個とした場合に、それらの凸条湾曲成形面の中央に位
置する凸条湾曲成形面をその断面が略平坦な円弧状とな
るよう短い幅に形成したときには、その中央の凸条湾曲
成形面に付着される懸濁液中の繊維材料が、両側の凸条
湾曲成形面側に流動するのが極力抑えられる。これによ
り、円筒体を形成する際の前記板材の折り返し箇所が厚
肉となるのを防止することができると共に、前記板材や
それから形成される円筒体の肉厚を全体的により均一な
ものとすることができる。また、板材の折り返し箇所が
厚肉となるのが防止されるので、その折り返しの際に亀
裂が生じるのを確実に防止することができる。As described above, when the number of the ridge-curve forming surfaces is 3, the ridge-curving surface located at the center of the ridge-curving surfaces is formed into an arc shape having a substantially flat cross section. When it is formed to have such a short width, the fibrous material in the suspension attached to the central convex curve forming surface is prevented from flowing to both convex curve forming surfaces on both sides as much as possible. This makes it possible to prevent the folded-back portion of the plate material when forming the cylindrical body from becoming thick, and also to make the plate material and the cylindrical body formed from the plate material more uniform in overall thickness. be able to. Further, since the folded-back portion of the plate material is prevented from becoming thick, it is possible to reliably prevent the occurrence of cracks at the time of folding-back.
【0018】さらに、本発明の繊維材料からなる円筒体
の製造方法において、前記下型の各凸条湾曲成形面に
は、その円弧方向に延在する複数の凸状リブ成形部が設
けられていることを特徴とする。Further, in the method for manufacturing a cylindrical body made of the fibrous material of the present invention, a plurality of convex rib forming portions extending in the arc direction are provided on each convex curve forming surface of the lower mold. It is characterized by being
【0019】前記下型の各凸条湾曲成形面に、その円弧
方向に延在する複数の凸状リブ成形部を設けたことで、
各凸条湾曲成形面に付着される懸濁液中の繊維材料が各
凸条湾曲成形面の軸方向で流動するのも防止することが
でき、前記板材及び円筒体の肉厚を全体的にさらに均一
なものとすることができる。By providing a plurality of convex rib forming portions extending in the arc direction on each convex curve forming surface of the lower mold,
It is also possible to prevent the fibrous material in the suspension attached to each ridge-curving surface from flowing in the axial direction of each ridge-curving surface, and to reduce the wall thickness of the plate material and the cylindrical body as a whole. It can be made more uniform.
【0020】[0020]
【発明の実施の形態】本発明の一実施の形態を図1乃至
図6を参照して説明する。図1は本実施形態の円筒体の
斜視図、図2は図1の円筒体を作成するための板材及び
該板材を成形するための金型の斜視図、図3は図2のI
II矢視図、図4乃至図6は図2の板材の成形方法を説
明するための工程説明図である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view of a cylindrical body of the present embodiment, FIG. 2 is a perspective view of a plate material for forming the cylindrical body of FIG. 1 and a mold for molding the plate material, and FIG. 3 is I of FIG.
II arrow view, FIG. 4 to FIG. 6 are process explanatory views for explaining the method of forming the plate material of FIG.
【0021】まず、図1に示す本実施形態の円筒体1を
形成するための板材を図2及び図3を参照して説明す
る。First, a plate material for forming the cylindrical body 1 of this embodiment shown in FIG. 1 will be described with reference to FIGS. 2 and 3.
【0022】図2及び図3に示す板材2は、三つの断面
円弧状の蒲鉾形湾曲部3,4,5をその順番にそれらの
幅方向に並列させて連設した形のものであり、各湾曲部
3,4,5の円弧半径及び軸方向の長さは、いずれも作
成する円筒体1の半径及び軸方向の長さと同一とされ、
また、各湾曲部3,4,5の円弧長は、それらの総和が
作成する円筒体1の円周長に一致するようになってい
る。この場合、板材2の両側の湾曲部3,5の円弧長
は、同じ長さで比較的長いものとされ、それらの湾曲部
3,5の間に位置する湾曲部4の円弧長は、該湾曲部4
が略平坦となる程度に短いものとされている。The plate member 2 shown in FIGS. 2 and 3 has a shape in which three kamaboko-shaped curved portions 3, 4, 5 having an arcuate cross section are arranged in this order in parallel in the width direction thereof. The arc radius and the axial length of each of the curved portions 3, 4, and 5 are the same as the radius and the axial length of the cylindrical body 1 to be created.
Further, the arc lengths of the curved portions 3, 4, and 5 are arranged so that the sum of them matches the circumference length of the cylindrical body 1. In this case, the arcuate lengths of the curved portions 3 and 5 on both sides of the plate member 2 are the same length and relatively long, and the arcuate lengths of the curved portions 4 located between the curved portions 3 and 5 are Curved part 4
Is short enough to be substantially flat.
【0023】尚、板材2は、例えば古紙とヴァージンパ
ルプとを混合したパルプ繊維(繊維材料)により後述す
るように成形されたものである。The plate material 2 is formed by a pulp fiber (fiber material), which is a mixture of waste paper and virgin pulp, as will be described later.
【0024】湾曲部3,4の連設箇所と湾曲部4,5の
連設箇所とは、それぞれこれらの湾曲部3,4,5の長
手方向に延在する折り目部6,7となっており、該折り
目部6,7に沿って各湾曲部3,4,5をその湾曲方向
に折り返し可能としている。この場合、折り目部6,7
の位置では、図3に示すように板材2の外面側が内面側
に向かって凹溝状にへこまされており、該折り目部6,
7の位置における板材2の肉厚が他の箇所に較べて薄肉
に形成されている。The places where the curved portions 3 and 4 are connected and the places where the curved portions 4 and 5 are connected are folds 6 and 7 extending in the longitudinal direction of the curved portions 3, 4 and 5, respectively. The curved portions 3, 4, 5 can be folded back along the folds 6, 7 in the bending direction. In this case, the folds 6 and 7
3, the outer surface side of the plate member 2 is dented in the shape of a groove toward the inner surface side as shown in FIG.
The thickness of the plate member 2 at the position 7 is smaller than that at other positions.
【0025】図2に示すように、長い円弧長を有する湾
曲部3,5の頂部には、それぞれその長手方向に延在す
るリブ8が形成され、また、湾曲部3,5の前部及び後
部には、それぞれ円弧方向に延在するリブ9,10が形
成されている。これらのリブ8,9,10は、湾曲部
3,5の内面側から外面側に突出するように形成されて
いる。As shown in FIG. 2, ribs 8 extending in the longitudinal direction are formed at the tops of the curved portions 3 and 5 having a long arc length, and the front portions of the curved portions 3 and 5 are formed. Ribs 9 and 10 respectively extending in the arc direction are formed at the rear portion. These ribs 8, 9 and 10 are formed so as to project from the inner surface side of the curved portions 3 and 5 to the outer surface side.
【0026】また、板材2の両側縁部には、湾曲部3,
5の側縁にその長手方向に延在して連設する細長平板状
のフランジ11,11が形成されている。Further, the curved portions 3, 3 are formed on both side edges of the plate member 2.
Elongated flat plate-like flanges 11, 11 are formed on the side edge of the base plate 5 and extend in the longitudinal direction thereof to be continuous with each other.
【0027】尚、板材2の中央の湾曲部4は、該板材2
の両側縁部のフランジ11,11を平面上に載置したと
き、その平面よりも上側に位置するようになっている
(図3参照)。The curved portion 4 at the center of the plate member 2 is
When the flanges 11, 11 on both side edges are placed on a plane, they are positioned above the plane (see FIG. 3).
【0028】かかる板材2から次のように図1の円筒体
1が作成される。The cylindrical body 1 of FIG. 1 is prepared from the plate material 2 as follows.
【0029】すなわち、図3を参照して、前記折り目部
6の位置で湾曲部4を湾曲部3に対して湾曲方向に折り
返すと共に、前記折り目部7の位置で湾曲部5を湾曲部
4に対して湾曲方向に折り返し、板材2の両側縁部のフ
ランジ11,11接合する。これにより、図1に示す円
筒体1が得られる。That is, referring to FIG. 3, the bending portion 4 is folded back in the bending direction with respect to the bending portion 3 at the position of the fold portion 6, and the bending portion 5 is bent to the bending portion 4 at the position of the fold portion 7. On the other hand, it is folded back in the bending direction, and the flanges 11 and 11 on both side edges of the plate material 2 are joined. As a result, the cylindrical body 1 shown in FIG. 1 is obtained.
【0030】この場合、板材2を三つの断面円弧状の湾
曲部3,4,5により構成しておくことで、各折り目部
6,7における板材2の折り返し角度は比較的小さなも
ので済む(本実施形態では各折り目部6,7における折
り返し角度が例えば90°程度となるように湾曲部3,
4,5の円弧長等が設定されている)。従って、板材2
から円筒体1を作成する際に、各折り目部6,7の位置
で亀裂が生じるのが防止される。In this case, since the plate member 2 is composed of three curved portions 3, 4, 5 having an arcuate cross section, the folding angle of the plate member 2 at each of the folds 6, 7 can be relatively small ( In the present embodiment, the bending portion 3, so that the folding angle at each fold portion 6, 7 is, for example, about 90 °.
4 and 5 arc length etc. are set). Therefore, the plate material 2
When producing the cylindrical body 1 from the above, it is possible to prevent cracks from being generated at the positions of the folds 6 and 7.
【0031】また、作成された円筒体1にあっては、湾
曲部3,5の箇所に、円筒体1の軸方向に延在するリブ
8や周方向に延在するリブ9,10が形成されるため、
該円筒体1の必要な剛性が確保される。In the produced cylinder 1, ribs 8 extending in the axial direction of the cylinder 1 and ribs 9 and 10 extending in the circumferential direction are formed at the curved portions 3 and 5. Because
The required rigidity of the cylindrical body 1 is secured.
【0032】次に、このような円筒体1を作成するため
の板材2の成形方法を説明する。Next, a method of forming the plate member 2 for making such a cylinder 1 will be described.
【0033】板材2は、図2に示すような下型12及び
上型13により構成された金型を用いて成形される。The plate member 2 is molded by using a mold composed of a lower mold 12 and an upper mold 13 as shown in FIG.
【0034】下型12の上面部には、前記板材2の内面
側の形状に対応した成形面14が形成され、該成形面1
4は、板材2の湾曲部3,4,5の内面をそれぞれ成形
するための三つの断面円弧状の凸条湾曲成形面15,1
6,17をそれらの幅方向に連設して構成されている。A molding surface 14 corresponding to the shape of the inner surface of the plate member 2 is formed on the upper surface of the lower mold 12, and the molding surface 1
Reference numeral 4 denotes three convex arcuate curved molding surfaces 15, 1 each having an arc-shaped cross section for molding the inner surfaces of the curved portions 3, 4, 5 of the plate member 2.
6 and 17 are continuously arranged in the width direction.
【0035】凸条湾曲成形面15,17の頂部には、そ
れぞれ前記板材2のリブ8を成形するための凸条リブ成
形部18が各湾曲成形面15,17の長手方向に延在し
て形成され、また、凸条湾曲成形面15,17の前部及
び後部には、それぞれ前記板材2のリブ9,10を成形
するための凸条リブ成形部19,20が円弧方向に延在
して形成されている。On the tops of the convex curve forming surfaces 15 and 17, there are formed convex rib forming parts 18 for forming the ribs 8 of the plate member 2 extending in the longitudinal direction of the curved forming surfaces 15 and 17, respectively. The rib forming portions 15, 20 for forming the ribs 9, 10 of the plate member 2 extend in the arc direction on the front and rear portions of the rib forming surfaces 15, 17, respectively. Is formed.
【0036】尚、凸条湾曲成形面15,17の側方に連
なる下型12の上面部は平面状になっており、その凸条
湾曲成形面15,17寄りの箇所は前記板材2のフラン
ジ11,11の下面部を生成するためのフランジ成形部
21,21となっている。The upper surface of the lower die 12 connected to the sides of the convex curve forming surfaces 15 and 17 is flat, and the portion near the convex curve forming surfaces 15 and 17 is the flange of the plate member 2. The flange forming parts 21 and 21 are for forming the lower surface parts of the parts 11 and 11.
【0037】また、各凸条湾曲成形面15,16,17
には、それに後述するように付着されるパルプ繊維を分
散させた懸濁液から水分を吸引除去するためのスリット
状の吸引孔22が複数設けられている。Further, each convex curve forming surface 15, 16, 17
A plurality of slit-shaped suction holes 22 for sucking and removing water from a suspension in which pulp fibers are dispersed are attached to the suction holes 22.
【0038】上型13の下面部には、下型12と同様
に、前記板材2の湾曲部3,4,5の外面をそれぞれ成
形するための三つの断面円弧状の凹条湾曲成形面23,
24,25をそれらの幅方向に連設してなる成形面26
が形成されている。そして、上型13の凹条湾曲成形面
23,25の側方に連なる下面部には前記板材2のフラ
ンジ11,11と同じ幅を有するフランジ成形部27,
27が形成されている。Similar to the lower mold 12, the lower surface of the upper mold 13 has three recessed curved molding surfaces 23 each having an arcuate cross section for molding the outer surfaces of the curved portions 3, 4, and 5 of the plate member 2. ,
Forming surface 26 in which 24 and 25 are continuously provided in the width direction thereof
Are formed. A flange forming part 27 having the same width as the flanges 11, 11 of the plate member 2 is formed on the lower surface part of the upper die 13 which is continuous to the side of the concave curve forming surfaces 23, 25.
27 is formed.
【0039】尚、詳細な図示は省略するが、凹条湾曲成
形面23,25には、下型12と同様に、前記板材2の
リブ8,9,10を成形するための凹条リブ成形部が形
成されている(図2では、リブ8に対応する凹条リブ成
形部の一部のみを破線で記載した)。また、各凹条湾曲
成形面23,24,25には、前記下型12の吸引孔2
2と同様の吸引孔(図示しない)が設けられている。Although not shown in detail, the concave-curve curved molding surfaces 23, 25 are molded with the concave-rib ribs for molding the ribs 8, 9, 10 of the plate member 2 as in the lower die 12. 2 is formed (in FIG. 2, only a part of the concave rib forming portion corresponding to the rib 8 is indicated by a broken line). Further, the suction holes 2 of the lower mold 12 are formed on the concave curved surface 23, 24, 25.
A suction hole (not shown) similar to that of No. 2 is provided.
【0040】次に、前記板材2の成形工程を説明する。
尚、図4乃至図6では、便宜上、板材2のリブ8,9,
10やこれを成形するためのリブ成形部の記載を省略し
た。図4乃至図6に概略が示された成形装置28は、上
型13,13´と、下型12,12´とを備え、上型1
3,13´は夫々昇降手段29,30により昇降され
る。一方の上型13の下方にはパルプ繊維材料を分散さ
せた懸濁液Bを貯留した抄紙槽Aが設けられている。抄
紙槽Aの下方には、一方の下型12を該抄紙槽A内に浸
漬させる昇降手段31が設けられている。他方の下型1
2´は上型13,13´の下方において移動手段32に
より水平に往復移動される。Next, the step of forming the plate material 2 will be described.
In FIGS. 4 to 6, for convenience, the ribs 8, 9,
The description of 10 and the rib forming portion for forming the same is omitted. The molding apparatus 28 schematically shown in FIGS. 4 to 6 includes upper molds 13 and 13 ′ and lower molds 12 and 12 ′.
3, 13 'are moved up and down by lifting means 29, 30 respectively. Below one of the upper molds 13, a papermaking tank A in which a suspension B in which a pulp fiber material is dispersed is stored is provided. Below the papermaking tank A, an elevating means 31 for immersing the one lower mold 12 in the papermaking tank A is provided. The other lower mold 1
2'is horizontally reciprocated by the moving means 32 below the upper molds 13, 13 '.
【0041】先ず、図4(a)に示すように、パルプ繊
維材料を分散させた懸濁液B(以下、パルプ液Bとい
う)を貯留した抄紙槽A内に、前記下型12を昇降手段
31により浸漬させる。このとき、前記下型12の吸引
孔22を介して図示しない吸引手段によってパルプ繊維
材料の吸引が行われるので、抄紙槽A内のパルプ繊維材
料は下型12の成形面14の表面に沿って付着する。First, as shown in FIG. 4A, the lower mold 12 is moved up and down in a papermaking tank A in which a suspension B in which a pulp fiber material is dispersed (hereinafter referred to as pulp liquid B) is stored. Immerse with 31. At this time, since the pulp fiber material is sucked by the suction means (not shown) through the suction hole 22 of the lower mold 12, the pulp fiber material in the papermaking tank A is along the surface of the molding surface 14 of the lower mold 12. Adhere to.
【0042】次いで、図4(b)に示すように昇降手段
31により下型12を抄紙槽A内から押し上げると共
に、上型13を昇降手段29により下降させ、更に下型
12と上型13との成形面14,26を互いに嵌合させ
て型締めする。この時、パルプ繊維材料は下型12及び
上型13の間に形成されるキャビティ内で加圧され、同
時に、下型12の吸引孔22及び上型18の図示しない
吸引孔からは成形面14,26間のキャビティ内のパル
プ液Bの水分が図示しない吸引手段によって吸引されて
除去される。Next, as shown in FIG. 4 (b), the lower die 12 is pushed up from inside the paper making tank A by the elevating means 31, and the upper die 13 is lowered by the elevating means 29, and the lower die 12 and the upper die 13 are separated. The molding surfaces 14 and 26 are fitted to each other and clamped. At this time, the pulp fiber material is pressurized in the cavity formed between the lower mold 12 and the upper mold 13, and at the same time, the molding surface 14 is discharged from the suction holes 22 of the lower mold 12 and the suction holes (not shown) of the upper mold 18. , 26, the moisture of the pulp liquid B in the cavity is sucked and removed by a suction means (not shown).
【0043】これにより、成形面14,26間のキャビ
ティ内にパルプ繊維からなる予備成形物2´(図5
(a)参照)が成形される。この予備成形物2´は、最
終的に得る板材2とほぼ同じ形状のものである。As a result, the preform 2'comprising pulp fibers is formed in the cavity between the molding surfaces 14 and 26 (see FIG. 5).
(See (a)) is molded. The preform 2'has substantially the same shape as the plate material 2 to be finally obtained.
【0044】そして、図5(a)に示すように、予備成
形物2´を上型13の成形面26に吸引保持した状態で
上型13を上昇させ、下型12を前記抄紙槽Aのパルプ
液B内に浸漬させると同時に、他方の下型12´を移動
手段32により上型13の下方に進出させる。Then, as shown in FIG. 5 (a), the upper mold 13 is raised while the preform 2'is suction-held on the molding surface 26 of the upper mold 13, and the lower mold 12 is moved to the papermaking tank A. At the same time as the lower mold 12 ′ is dipped in the pulp liquid B, the other lower mold 12 ′ is advanced below the upper mold 13 by the moving means 32.
【0045】次いで、図5(b)に示すように、上型1
3を昇降手段29により下降させ、他方の下型12´と
上型13との成形面14´,26を互いに嵌合させて第
2の型締めを行う。この時、予備成形物2´は図示しな
いヒータにより加熱されつつ両成形面14´,26に加
圧される。Then, as shown in FIG. 5B, the upper mold 1
3 is lowered by the elevating means 29, the molding surfaces 14 'and 26 of the other lower mold 12' and upper mold 13 are fitted to each other, and the second mold clamping is performed. At this time, the preform 2'is pressed against both molding surfaces 14 'and 26 while being heated by a heater (not shown).
【0046】続いて、上型13の上昇時に予備成形物2
´をその成形面26から型抜きして、下型12´上に載
置状態とする。そして図6に示すように、下型12´を
他方の上型13´の下方に移動させ、該上型13´を昇
降手段30により下降させ、図示しないヒータにより加
熱しつつ上型13´及び下型12´の成形面26´,1
4´間で加圧する。このとき、両成形面26´,14´
間の間隔を前記成形面26,14間の間隔より狭く設定
しておくことで、より強い加圧状態とする。これによ
り、パルプ繊維材料の組織構成が強固とされた板材2が
成形される。Subsequently, when the upper mold 13 is raised, the preform 2
The mold ′ is die-cut from the molding surface 26 and placed on the lower mold 12 ′. Then, as shown in FIG. 6, the lower die 12 'is moved to the lower side of the other upper die 13', the upper die 13 'is lowered by the elevating means 30, and the upper die 13' and the upper die 13 'are heated by a heater (not shown). Molding surface 26 ', 1 of the lower mold 12'
Pressurize between 4 '. At this time, both molding surfaces 26 ', 14'
By setting the interval between the molding surfaces 26, 14 to be narrower than the interval between the molding surfaces 26, 14, a stronger pressure is applied. As a result, the plate material 2 in which the structural constitution of the pulp fiber material is strengthened is molded.
【0047】そして、このように成形された板材2か
ら、前述したように前記円筒体1が作成される。Then, the cylindrical body 1 is prepared from the plate material 2 thus formed, as described above.
【0048】かかる板材2の成形において、下型12と
上型13とを型締めしてパルプ液Aを加圧する際(図4
(b)の工程)には、下型12の凸条湾曲成形面15,
17の頂部の箇所のパルプ液A中のパルプ繊維が多少、
フランジ成形部21,21側に凸条湾曲成形面15,1
7の円弧面に沿って水分と共に流動するものの、凸条湾
曲成形面15,17の頂部からそれらの間の凸条湾曲成
形面16側に至る円弧面はその傾斜が緩やかなものとな
っているため、凸条湾曲成形面16側へのパルプ繊維の
流動は十分に少ないものに抑えられる。従って、凸条湾
曲成形面15,17の頂部の箇所におけるパルプ繊維が
多量に流出してしまうことはなく、十分な量のパルプ繊
維が残存する。In molding the plate member 2, when the lower mold 12 and the upper mold 13 are clamped to pressurize the pulp liquid A (see FIG. 4).
In the step (b)), the convex curved surface 15 of the lower mold 12 is formed,
Some pulp fibers in the pulp liquid A at the top of 17
On the flange forming parts 21 and 21 side, the convex curved surface 15 and 1 is formed.
Although it flows along with the water along the arcuate surface of No. 7, the arcuate surface extending from the tops of the convex curve forming surfaces 15 and 17 to the side of the convex curve forming surface 16 between them has a gentle inclination. Therefore, the flow of the pulp fiber toward the convex curved surface 16 can be suppressed to a sufficiently small amount. Therefore, a large amount of pulp fibers do not flow out at the top portions of the convex-curved curved surfaces 15 and 17, and a sufficient amount of pulp fibers remain.
【0049】また、凸条湾曲成形面15,17の間の凸
条湾曲成形面16の箇所においては、該凸条湾曲成形面
16が略平坦であるので、パルプ液A中のパルプ繊維が
凸条凸条湾曲成形面15,17側にほとんど流動するこ
となく残存する。At the location of the ridge-curved molding surface 16 between the ridge-curved molding surfaces 15 and 17, since the ridge-curved molding surface 16 is substantially flat, the pulp fibers in the pulp liquid A are convex. The ridges and ridges remain on the molding surfaces 15, 17 with almost no flow.
【0050】そして、前記板材2の折り目部6,7(図
2参照)に相当する凸条湾曲成形面15,17と凸条湾
曲成形面16との境界部分にあっては、凸条湾曲成形面
16側からパルプ繊維が流動してくることはほとんどな
いと共に、凸条湾曲成形面15,17側から流動してく
るパルプ繊維は僅かなものであるため、必要以上に多く
のパルプ繊維が溜まることがない。At the boundary between the ridge-curved molding surfaces 15 and 17 corresponding to the creases 6 and 7 (see FIG. 2) of the plate member 2 and the ridge-curved molding surface 16, the ridge-curved molding is performed. Pulp fibers rarely flow from the surface 16 side, and since only a few pulp fibers flow from the convex curve forming surfaces 15 and 17, more pulp fibers accumulate than necessary. Never.
【0051】さらに、凸条湾曲成形面15,17にあっ
ては、前記図2に示したように、その前部及び後部に円
弧方向に延在する凸条リブ成形部19,20が設けられ
ているため、それらの凸条リブ成形部19,20が障壁
となって、パルプ液A中のパルプ繊維が両成形面14,
26間によるキャビティの前端部や後端部に流動するの
も防止される。Further, as shown in FIG. 2, the ridge-curved molding surfaces 15 and 17 are provided with ridge rib molding portions 19 and 20 extending in the arc direction at the front and rear portions thereof. Therefore, the convex rib forming portions 19 and 20 serve as barriers, and the pulp fibers in the pulp liquid A are formed on both forming surfaces 14 and
It is also prevented from flowing to the front end portion and the rear end portion of the cavity due to the gap between the 26.
【0052】これにより、前述したように成形される板
材2は、その肉厚が均一的なものとなって、該板材2か
ら作成される前記円筒体1の肉厚も均一的なものとな
る。As a result, the plate member 2 formed as described above has a uniform wall thickness, and the cylindrical body 1 made from the plate member 2 also has a uniform wall thickness. .
【0053】尚、以上説明した実施形態においては、三
つの湾曲部3,4,5を設けた板材2から作成する円筒
体1及びその製造方法を説明したが、さらに多くの湾曲
部を有する板材を本実施形態と同様に金型により成形
し、その板材から円筒体を作成するうようにすることも
可能であることはもちろんである。In the embodiment described above, the cylindrical body 1 made from the plate member 2 provided with the three curved portions 3, 4 and 5 and the manufacturing method thereof have been described, but the plate member having more curved portions is described. Needless to say, it is also possible to form a cylindrical body from the plate material by molding with a mold as in the present embodiment.
【0054】また、本実施形態においては、円筒体の繊
維材料としてパルプ繊維を用いたものを説明したが、動
物性繊維等の天然繊維や、合繊繊維等の他の繊維材料を
用いることも可能である。In the present embodiment, the pulp fiber is used as the fiber material of the cylindrical body. However, natural fiber such as animal fiber or other fiber material such as synthetic fiber can be used. Is.
【図1】本実施形態の繊維材料からなる円筒体の一例の
斜視図。FIG. 1 is a perspective view of an example of a cylindrical body made of a fiber material according to an embodiment.
【図2】図1の円筒体を作成するための板材及びその板
材を成形するための金型の斜視図。FIG. 2 is a perspective view of a plate material for forming the cylindrical body of FIG. 1 and a mold for molding the plate material.
【図3】図2のIII矢視図。FIG. 3 is a view on arrow III in FIG.
【図4】図2の板材の成形方法を説明するための工程説
明図。4A to 4C are process explanatory views for explaining a method of forming the plate material of FIG.
【図5】図4に続く工程説明図。FIG. 5 is a process explanatory diagram that follows FIG. 4;
【図6】図5に続く工程説明図。FIG. 6 is an explanatory view of the process following FIG.
【図7】従来の円筒体の製造方法を説明するための説明
図。FIG. 7 is an explanatory view for explaining a conventional method for manufacturing a cylindrical body.
1…円筒体、2…板材、3,4,5…湾曲部、6,7…
折り目部、12…下型、13…上型、15,16,17
…凸条湾曲成形面、23,24,25…凹条湾曲成形
面、19,20…凸条リブ成形部、A…パルプ繊維を分
散させた懸濁液。1 ... Cylindrical body, 2 ... Plate material, 3, 4, 5 ... Curved part, 6, 7 ...
Fold lines, 12 ... Lower mold, 13 ... Upper mold, 15, 16, 17
... ridge-curved molding surface, 23, 24, 25 ... concave-curved molding surface, 19, 20 ... ridge rib-molded portion, A ... suspension in which pulp fibers are dispersed.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 犬養 洋介 埼玉県岩槻市鹿室605−1 株式会社トー モク社宅B102 (72)発明者 鎌塚 真樹 埼玉県大宮市日進町1丁目706−13 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yosuke Inuyo 605-1 Shimuro, Iwatsuki City, Saitama Prefecture Tomok Co., Ltd. B102 (72) Inventor Masaki Kamazuka 1-chome, Nisshin-cho, Omiya City, Saitama 706-13
Claims (4)
形成される円筒体において、前記板材は前記円筒体の周
長方向となる幅方向に間隔を存して設けた複数の折り目
部と、該折り目部を介して幅方向に並列して連設された
少なくとも三つの断面円弧状の湾曲部とにより構成さ
れ、該板材を前記各折り目部で各湾曲部の湾曲方向に折
り返しつつ該板材の両側縁を接合してなることを特徴と
する繊維材料から成る円筒体。1. A cylindrical body formed by joining both side edges of a plate material made of a fibrous material, wherein the plate material is provided with a plurality of folds provided at intervals in a width direction which is a circumferential direction of the cylindrical body. And at least three curved portions having an arcuate cross section that are continuously arranged in parallel in the width direction through the fold portions, and the plate member is folded back in the bending direction of each curved portion at each of the fold portions. A cylindrical body made of a fiber material, which is formed by joining both side edges of a plate material.
て、少なくとも三つの断面円弧状の凸条湾曲成形面を幅
方向に並列させて連設してなる成形面を有する下型と該
下型の各凸条湾曲成形面と嵌合する凹条湾曲成形面を有
する上型とを用い、前記下型の成形面上に繊維材料を分
散させた懸濁液を塗布する工程と、該懸濁液により繊維
材料を付着させた下型に前記上型を嵌合させて該繊維材
料を加圧する工程と、該加圧状態で前記懸濁液の水分を
除去しつつ加熱し、前記下型の各凸型湾曲成形面の位置
にその形状に対応した湾曲部を有する繊維材料からなる
板材を該下型と上型との間に成形する工程と、成形され
た板材を前記湾曲部同士の間の側縁で折り返しつつ該板
材の両側縁を接合することにより前記円筒体を得る工程
とからなることを特徴とする繊維材料から成る円筒体の
製造方法。2. A method for manufacturing a cylindrical body made of a fibrous material, wherein a lower mold having a molding surface formed by arranging at least three convex curved molding surfaces having an arcuate cross section in parallel in the width direction and the lower mold. And a step of applying a suspension in which a fiber material is dispersed onto the molding surface of the lower mold, using an upper mold having a concave curved molding surface that fits with each convex curve molding surface of A step of fitting the upper mold to a lower mold to which a fiber material is attached by a liquid and pressurizing the fiber material; and heating while removing the water content of the suspension in the pressurized state, A step of molding a plate material made of a fibrous material having a curved portion corresponding to the shape at the position of each convex curved molding surface between the lower mold and the upper mold; and a molded plate material between the curved portions. The step of obtaining the cylindrical body by joining both side edges of the plate material while folding back the side edges of Method for manufacturing a cylindrical body made of a fiber material and symptoms.
あり、それらの凸条湾曲成形面の中央に位置する凸条湾
曲成形面は、その断面が略平坦な円弧状となるよう短い
幅に形成されていることを特徴とする請求項2記載の繊
維材料から成る円筒体の製造方法。3. The number of convex ridge curve forming surfaces of the lower die is three, and the convex ridge curve forming surfaces located at the center of the convex ridge curve forming surfaces are arc-shaped with a substantially flat cross section. The method for producing a cylindrical body made of a fiber material according to claim 2, wherein the cylindrical body is formed to have a short width.
弧方向に延在する複数の凸状リブ成形部が設けられてい
ることを特徴とする請求項2又は3記載の繊維材料から
成る円筒体の製造方法。4. The fiber according to claim 2, wherein a plurality of convex rib forming portions extending in the arc direction are provided on each convex curve forming surface of the lower mold. A method of manufacturing a cylindrical body made of a material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30736095A JPH08209600A (en) | 1994-11-28 | 1995-11-27 | Cylindrical unit comprising fiber material and its production |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6-293312 | 1994-11-28 | ||
JP29331294 | 1994-11-28 | ||
JP30736095A JPH08209600A (en) | 1994-11-28 | 1995-11-27 | Cylindrical unit comprising fiber material and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08209600A true JPH08209600A (en) | 1996-08-13 |
Family
ID=26559354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30736095A Pending JPH08209600A (en) | 1994-11-28 | 1995-11-27 | Cylindrical unit comprising fiber material and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08209600A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999057373A1 (en) * | 1998-05-07 | 1999-11-11 | Kao Corporation | Formed body |
WO2000040801A1 (en) * | 1998-12-28 | 2000-07-13 | Kao Corporation | Formed body |
KR100292120B1 (en) * | 1998-12-29 | 2001-06-01 | 이종윤 | Packaging mold mold using dry pulp |
WO2006040976A1 (en) * | 2004-10-12 | 2006-04-20 | Kao Corporation | Method and apparatus for producing fiber formed article, intermediate of fiber formed article and fiber formed article |
US7297232B2 (en) | 2001-07-24 | 2007-11-20 | Kao Corporation | Production method and device for fiber molding |
WO2008026679A1 (en) * | 2006-08-31 | 2008-03-06 | Kao Corporation | Paper-making mold, and paper molding |
JP2008081917A (en) * | 2006-08-31 | 2008-04-10 | Kao Corp | Papermaking mold and molded paper |
US7370788B1 (en) | 1998-12-28 | 2008-05-13 | Kao Corporation | Formed body |
JP2009018339A (en) * | 2007-07-13 | 2009-01-29 | Kao Corp | Mold and combined mold |
CN109094115A (en) * | 2018-08-01 | 2018-12-28 | 常州市诚鑫环保科技有限公司 | Paper suction pipe and its manufacturing method |
-
1995
- 1995-11-27 JP JP30736095A patent/JPH08209600A/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999057373A1 (en) * | 1998-05-07 | 1999-11-11 | Kao Corporation | Formed body |
US7370788B1 (en) | 1998-12-28 | 2008-05-13 | Kao Corporation | Formed body |
WO2000040801A1 (en) * | 1998-12-28 | 2000-07-13 | Kao Corporation | Formed body |
KR100292120B1 (en) * | 1998-12-29 | 2001-06-01 | 이종윤 | Packaging mold mold using dry pulp |
US7297232B2 (en) | 2001-07-24 | 2007-11-20 | Kao Corporation | Production method and device for fiber molding |
WO2006040976A1 (en) * | 2004-10-12 | 2006-04-20 | Kao Corporation | Method and apparatus for producing fiber formed article, intermediate of fiber formed article and fiber formed article |
JP2006136939A (en) * | 2004-10-12 | 2006-06-01 | Kao Corp | Method and apparatus for producing fiber formed article, intermediate of fiber formed article and fiber formed article |
KR100888315B1 (en) * | 2004-10-12 | 2009-03-11 | 가오 가부시키가이샤 | Method and apparatus for producing fiber formed article, intermediate of fiber formed article and fiber formed article |
WO2008026679A1 (en) * | 2006-08-31 | 2008-03-06 | Kao Corporation | Paper-making mold, and paper molding |
JP2008081917A (en) * | 2006-08-31 | 2008-04-10 | Kao Corp | Papermaking mold and molded paper |
JP2009018339A (en) * | 2007-07-13 | 2009-01-29 | Kao Corp | Mold and combined mold |
CN109094115A (en) * | 2018-08-01 | 2018-12-28 | 常州市诚鑫环保科技有限公司 | Paper suction pipe and its manufacturing method |
CN109094115B (en) * | 2018-08-01 | 2024-07-16 | 常州市诚鑫环保科技有限公司 | Paper plastic suction pipe and manufacturing method thereof |
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