JP4587799B2 - Core for papermaking molding - Google Patents
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- JP4587799B2 JP4587799B2 JP2004355874A JP2004355874A JP4587799B2 JP 4587799 B2 JP4587799 B2 JP 4587799B2 JP 2004355874 A JP2004355874 A JP 2004355874A JP 2004355874 A JP2004355874 A JP 2004355874A JP 4587799 B2 JP4587799 B2 JP 4587799B2
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Description
本発明は、抄造成形体製造用中子及びこれを用いた抄造成形体の製造方法に関する。 The present invention relates to a core for producing a paper-molded product and a method for producing a paper-molded product using the same.
出願人は、伸縮自在な袋状の弾性押圧体と、該弾性押圧体内に流体を供給する管体とを備えた抄造成形体製造用中子を用い、前記弾性押圧体を脱水型又は乾燥型に収容された湿潤状態の抄造体内に挿入し、該弾性押圧体を膨張させて湿潤状態の抄造体を脱水型又は乾燥型の成形面に押圧し脱水又は乾燥して抄造成形体を製造する方法について、先に特許出願している（例えば、下記特許文献１参照）。 The applicant uses a core for manufacturing a paper-molded molded body provided with a stretchable bag-shaped elastic pressing body and a pipe body that supplies a fluid into the elastic pressing body, and the elastic pressing body is dehydrated or dried. A method for producing a papermaking molded body by inserting into a wet papermaking body accommodated in a container and expanding the elastic pressing body to press the wet papermaking body against a dehydrating or drying mold surface and dehydrating or drying. Has already been applied for a patent (for example, see Patent Document 1 below).
ところで、抄造成形体の製造では、抄造成形体製造用中子の弾性押圧体は、膨張と収縮を繰り返して反復使用される。この過程で、弾性押圧体の寸法が使用前の弾性押圧体（新品）よりも大きくなる。よって、このように大きくなった弾性押圧体をたとえば湿潤状態の抄造体中に挿入した際には、弾性押圧体の外表面が該湿潤状態の抄造体の内面に接触して抄造成形体の表面性を低下させることがあった。また、寸法が大きくなった弾性押圧体は、流体を供給する管体とのマッチングが不適正となり、収容口（後述）に弾性体が適正に収容されなくなり、その結果、成形体が弾性体で適切に押圧されないこという問題が起こることもあった。 By the way, in manufacture of a papermaking molded object, the elastic press body of the core for papermaking molded object manufacture is repeatedly used by repeating expansion and contraction. In this process, the size of the elastic pressing body becomes larger than that of the elastic pressing body (new) before use. Therefore, when the elastic pressing body thus enlarged is inserted into, for example, a wet papermaking body, the outer surface of the elastic pressing body comes into contact with the inner surface of the wet papermaking body and the surface of the papermaking molding body There was a case where the property was lowered. In addition, the elastic pressing body having a large size is improperly matched with the pipe body that supplies the fluid, and the elastic body is not properly stored in the storage port (described later). As a result, the molded body is an elastic body. The problem of not being pressed properly sometimes occurred.
本発明は、前記課題に鑑みてなされたものであり、長期間使用しても抄造成形体内面の表面性を低下させることがない抄造成形体製造用中子及びこれを用いた抄造成形体の製造方法を提供することにある。 The present invention has been made in view of the above problems, and a core for producing a paper-molded product that does not deteriorate the surface properties of the paper-molded molded body even when used for a long time, and a paper-molded product using the core It is to provide a manufacturing method.
本発明は、抄造成形体の製造に用いられる抄造成形体製造用中子であって、伸縮可能な袋状の弾性押圧体と、該弾性押圧体内に配されて該弾性押圧体内に流体を供給する管体とを備え、前記管体が前記弾性押圧体の延びに応じて伸長可能である抄造成形体製造用中子を提供することにより、前記目的を達成したものである。 The present invention relates to a core for manufacturing a paper-molded molded body used in the manufacture of a paper-molded molded body, and is a stretchable bag-like elastic pressing body, and is arranged in the elastic pressing body to supply fluid into the elastic pressing body. The above-mentioned object is achieved by providing a core for producing a paper-molded molded body that includes a tubular body that can be extended according to the extension of the elastic pressing body.
また、本発明は、上記本発明の抄造成形体製造用中子を用いた抄造成形体の製造方法であって、製造型内に配された開口部を有する抄造体内に前記中子を該開口部から挿入した後、前記弾性押圧体内に流体を供給して該弾性押圧体を膨出させ、前記製造型の成形面に前記抄造体を押圧しながら該抄造体の成形を行う工程を具備する抄造成形体の製造方法を提供することにより、前記目的を達成したものである。 The present invention also relates to a method for producing a papermaking molded body using the core for producing a papermaking molded body according to the present invention, wherein the core is opened in the papermaking body having an opening disposed in a production mold. A step of supplying the fluid into the elastic pressing body to bulge the elastic pressing body and then forming the papermaking body while pressing the papermaking body against the molding surface of the manufacturing mold. The object is achieved by providing a method for producing a papermaking molded product.
本発明の抄造成形体製造用中子及びこれを用いた抄造成形体の製造方法によれば、抄造成形体の内面の表面性を低下させずに抄造成形体を製造することができる。 According to the core for producing a papermaking molded body and the method for producing a papermaking molded body using the same according to the present invention, the papermaking molded body can be produced without reducing the surface properties of the inner surface of the papermaking molded body.
以下、本発明を、その好ましい実施の形態に基づき図面を参照しながら説明する。 Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
図１は、本発明の抄造成形体製造用中子（以下、単に中子ともいう。）の一実施形態を示したものである。同図において符号１は、中子を示している。 FIG. 1 shows an embodiment of a core for producing a paper-molded molded article (hereinafter also simply referred to as a core) according to the present invention. In the figure, reference numeral 1 denotes a core.
図１に示すように、中子１は、伸縮可能な袋状の弾性押圧体２と、弾性押圧体２内に配されて弾性押圧体２内に流体を供給する管体３と、弾性押圧体２を管体３に固定する固定治具４とを備えている。 As shown in FIG. 1, the core 1 includes a stretchable bag-shaped elastic pressing body 2, a tubular body 3 that is disposed in the elastic pressing body 2 and supplies fluid to the elastic pressing body 2, and an elastic pressing body. A fixing jig 4 for fixing the body 2 to the tube 3 is provided.
弾性押圧体２は、成形する抄造成形体（図２（d）参照）の形状（その先端部が折れ曲
がっている）に対応して先端部が折れ曲がった屈曲部２０を有している。成形する抄造成形体の先端部に折れ曲がった部分がない場合は、弾性押圧体２の屈曲部２０は不要である。弾性押圧体２の基部にはフランジ部２１が設けられており、このフランジ部２１を後述する管体３と固定治具４との間で挟持することで弾性押圧体２が管体３に固定される。
The elastic pressing body 2 has a bent portion 20 whose front end portion is bent corresponding to the shape of the papermaking molded body (see FIG. 2 (d)) to be molded (the front end portion is bent). When there is no bent portion at the tip of the papermaking molded body to be molded, the bent portion 20 of the elastic pressing body 2 is unnecessary. A flange portion 21 is provided at the base of the elastic pressing body 2, and the elastic pressing body 2 is fixed to the tube body 3 by sandwiching the flange portion 21 between a tube body 3 and a fixing jig 4 which will be described later. Is done.
弾性押圧体２には、伸縮可能な材質のものを特に制限なく用いることができるが、耐久・耐熱性等の点から、天然ゴム、ウレタン、フッ素系ゴム、シリコーン系ゴム又はエラストマー等合成ゴムからなる弾性材で構成されたものを用いることが好ましい。弾性押圧体２の肉厚のバラツキは、弾性体の耐久性低下を抑制する観点から、設定した基準肉厚に対して±２０％以内にすることが好ましい。また、同様の観点から、弾性体の面倍率、すなわち、（伸張した弾性体の表面積／伸張前の弾性体の表面積）×１００は、５００％以下に設定するのが好ましく、３００％以下で１００％以上に設定するのがより好ましい。また、弾性押圧体の使用温度は、耐久性を考慮すると、０℃〜３００℃が好ましい。 The elastic pressing body 2 can be made of a stretchable material without any particular limitation. From the viewpoint of durability and heat resistance, natural rubber, urethane, fluorine rubber, silicone rubber, or synthetic rubber such as elastomer can be used. It is preferable to use one made of an elastic material. The variation in the thickness of the elastic pressing body 2 is preferably within ± 20% with respect to the set reference thickness from the viewpoint of suppressing a decrease in durability of the elastic body. From the same viewpoint, the surface magnification of the elastic body, that is, (the surface area of the stretched elastic body / the surface area of the elastic body before stretching) × 100 is preferably set to 500% or less, and is preferably 100% or less. It is more preferable to set it to% or more. Further, the use temperature of the elastic pressing body is preferably 0 ° C. to 300 ° C. in consideration of durability.
管体３は、弾性押圧体２の延びに応じて伸長可能になっている。管体３は、固定された基管３０と基管３０に対しその長さ方向に往復動する可動管３１で構成されている。 The tube body 3 can be extended according to the extension of the elastic pressing body 2. The tube body 3 includes a fixed base tube 30 and a movable tube 31 that reciprocates in the length direction with respect to the base tube 30.
基管３０のフランジ部３００とその側面部にはそれぞれネジ孔３０１とネジ孔３０２が設けられている。 A screw hole 301 and a screw hole 302 are provided in the flange portion 300 and the side surface portion of the base tube 30, respectively.
可動管３１の内径は、基管３０の外径よりも大きく、可動管３１内に基管３０が挿入される。可動管３１の側面部には、ネジ孔３０２に対応して長孔３１０が設けられている。長孔３１０を通して先端部にネジが形成されたピン３２がネジ孔３０２に螺着されている。斯かる構成により可動管３１が基管３０に対してそれらの長手方向（図１の上下方向）に往復動可能となる。すなわち、図１に示すように、ピン３２を境にしてその上下に空隙が形成されるが、上の空隙Ｓの長さに相当する距離だけ、可動管３１が往復動可能となる。たとえば、繰り返し使用によって弾性押圧体が新品よりもＡｍｍ（例えば５％）縦方向に伸びたならば、可動管３１はその自重によってＡｍｍ（例えば５％）下がり、その先端部は弾性押圧体２の底部に接するようになる。 The inner diameter of the movable tube 31 is larger than the outer diameter of the base tube 30, and the base tube 30 is inserted into the movable tube 31. A long hole 310 is provided on the side surface of the movable tube 31 corresponding to the screw hole 302. A pin 32 having a screw formed at the tip through the long hole 310 is screwed into the screw hole 302. With such a configuration, the movable tube 31 can reciprocate in the longitudinal direction (vertical direction in FIG. 1) with respect to the base tube 30. That is, as shown in FIG. 1, a gap is formed above and below the pin 32, but the movable tube 31 can reciprocate by a distance corresponding to the length of the upper gap S. For example, if the elastic pressing body extends in the longitudinal direction by Amm (for example, 5%) from the new product by repeated use, the movable tube 31 is lowered by Amm (for example, 5%) by its own weight, and the tip portion of the elastic pressing body 2 is the elastic pressing body 2. It comes in contact with the bottom.
可動管３１の先端部には、弾性押圧体２の一部を収容する収容口３１１を有している。本実施形態では、収容口３１１は、可動管３１の先端側面部で屈曲部２０に対向する位置に形成されており、弾性押圧体２の屈曲部２０を収容することができる。可動管３１には、弾性押圧体２内に通じる流体の流通孔３１２が複数設けられている。
弾性押圧体２の収縮・膨張は、中子１の開口部（上部に形成されている）から弾性押圧体２内の気体を吸引排除・弾性押圧体２内への流体の供給により行われる。
A distal end of the movable tube 31 has an accommodation port 311 for accommodating a part of the elastic pressing body 2. In the present embodiment, the accommodation port 311 is formed at a position facing the bent portion 20 on the distal side surface portion of the movable tube 31, and can accommodate the bent portion 20 of the elastic pressing body 2. The movable tube 31 is provided with a plurality of fluid circulation holes 312 communicating with the elastic pressing body 2.
The contraction / expansion of the elastic pressing body 2 is performed by removing the gas in the elastic pressing body 2 from the opening (formed in the upper part) of the core 1 and supplying the fluid into the elastic pressing body 2.
固定治具４は、複数のネジ孔４００を有するリング状の治具本体４０と、ネジ孔４００及び前記ネジ孔３０１に螺着されるネジ４１とから構成される。固定治具４による弾性押圧体２の管体３への取り付けは、弾性押圧体２内に管体３が挿入された状態で弾性押圧体２のフランジ部２１を、基管３０のフランジ部３００の下面と治具本体４０の上面に当接させた後、ネジ孔４００、３０１にネジ４１を螺着させ、押圧体２のフランジ部２１をフランジ部３００と治具本体４０との間に挟持することにより行うことができる。 The fixing jig 4 includes a ring-shaped jig main body 40 having a plurality of screw holes 400, and a screw 41 that is screwed into the screw hole 400 and the screw hole 301. The elastic pressing body 2 is attached to the tube body 3 by the fixing jig 4 when the tubular body 3 is inserted into the elastic pressing body 2 and the flange portion 21 of the elastic pressing body 2 is replaced with the flange portion 300 of the base tube 30. Then, the screw 41 is screwed into the screw holes 400 and 301, and the flange portion 21 of the pressing body 2 is sandwiched between the flange portion 300 and the jig body 40. This can be done.
本発明の抄造成形体製造用中子は、脱水型或いは乾燥型内に配された湿潤状態の抄造体の内面に収容して、該内面を押圧することで該抄造体を脱水又は乾燥させる場合に好適に使用されるが、たとえばパルプ繊維を含む非湿潤状態の抄造体の内面を押圧して、抄造成形体を製造する際にも適用可能である。 The core for producing a papermaking molded body of the present invention is accommodated in the inner surface of a wet papermaking body placed in a dewatering mold or a drying mold, and the papermaking body is dehydrated or dried by pressing the inner surface. However, the present invention can also be applied to the production of a paper-molded product by pressing the inner surface of a non-wet paper-making product containing pulp fibers, for example.
次に、本発明の抄造成形体の製造方法を、その好ましい実施形態として、前記中子１を用いた抄造成形体の製造方法に基づいて図２を参照しながら説明する。 Next, the manufacturing method of the papermaking molded object of this invention is demonstrated as a preferable embodiment based on the manufacturing method of the papermaking molded object using the said core 1, referring FIG.
図２（ａ）に示すように、本実施形態においては、まず、製造する抄造成形体の外形形状に対応した成形面５０を有する乾燥型５内に、開口部１００を有する湿潤状態の抄造体１０を配する。乾燥型５は、ヒーター（図示せず）を備えるとともに、内部に水分の流通路５１が設けられた一組の割型から構成される。なお、図２（ａ）〜（ｃ）は、乾燥型を構成する割型の突き合わせ面からみた断面図である。 As shown in FIG. 2A, in the present embodiment, first, a wet papermaking having an opening 100 in a dry mold 5 having a molding surface 50 corresponding to the outer shape of the papermaking molding to be manufactured. Distribute 10. The drying mold 5 includes a heater (not shown) and a set of split molds in which a water flow passage 51 is provided. 2A to 2C are cross-sectional views seen from the butting surfaces of the split molds constituting the dry mold.
抄造体１０にはパルプ繊維が含まれるが、該パルプ繊維には、木材パルプのほか、コットンパルプ、リンターパルプ、竹やわらその他の非木材パルプを用いることができる。これらのパルプは、そのバージンパルプ若しくは古紙パルプ（回収品）を単独で又は二種以上を混合して用いることができる。入手の容易性、供給安定性、環境保護、製造費用の低減等の点から、特に古紙パルプが好ましい。抄造体１０は、これらのパルプ繊維を含むスラリーを用い、公知の湿式抄造法により製造される。 The papermaking body 10 includes pulp fibers, and the pulp fibers can be made of wood pulp, cotton pulp, linter pulp, bamboo straw and other non-wood pulp. These pulps can be used singly or as a mixture of two or more thereof. Waste paper pulp is particularly preferred from the standpoints of availability, supply stability, environmental protection, and reduction of production costs. The papermaking body 10 is manufactured by a known wet papermaking method using a slurry containing these pulp fibers.
抄造体１０には、前記パルプ繊維以外に、タルクやカオリナイト等の無機物、ガラス繊維やカーボン繊維等の無機繊維、ポリオレフィン等の熱可塑性合成樹脂の粉末又は繊維、非木材又は植物質繊維、多糖類等の成分を含有させもよい。これらの成分の配合量は、パルプ繊維と該成分の合計量に対して１〜９５質量％、特に５〜６０質量％が好ましい。 In addition to the pulp fibers, the papermaking body 10 includes inorganic materials such as talc and kaolinite, inorganic fibers such as glass fibers and carbon fibers, powders or fibers of thermoplastic synthetic resins such as polyolefins, non-wood or vegetable fibers, Components such as sugars may be included. The compounding amount of these components is preferably 1 to 95% by mass, particularly preferably 5 to 60% by mass, based on the total amount of the pulp fiber and the component.
また、抄造体１０には、紙力強化剤、パルプ繊維の分散剤、成形助剤、着色料、着色助剤、防かび剤等を適宜添加することができ、さらに、サイズ剤、顔料、定着剤等を適宜添加することもできる。 Further, a paper strength enhancer, a pulp fiber dispersant, a molding aid, a coloring agent, a coloring aid, an antifungal agent, and the like can be appropriately added to the papermaking product 10, and further, a sizing agent, a pigment, a fixing agent, and the like. An agent or the like can also be added as appropriate.
乾燥成形を行う抄造体１０の含水率は、乾燥成形工程への移行時の抄造体１０の損傷防止、乾燥効率向上等の点から、３０〜８０質量％が好ましく、４０〜７０質量％がより好ましい。 The water content of the papermaking body 10 to be dry-molded is preferably 30 to 80% by weight, more preferably 40 to 70% by weight from the viewpoint of preventing damage to the papermaking body 10 during the transfer to the dry-molding step and improving the drying efficiency. preferable.
次に、中子１の弾性押圧部２内の気体を上述の方法で排除することにより、屈曲部２０が収容口３１１から可動管３１内に収容された状態で中子１を抄造体１０の開口部１００からその内部に挿入する。 Next, by removing the gas in the elastic pressing portion 2 of the core 1 by the above-described method, the core 1 is removed from the papermaking body 10 in a state where the bent portion 20 is accommodated in the movable tube 31 from the accommodation port 311. It inserts into the inside from the opening part 100. FIG.
次に、図２（ｂ）に示すように、中子１の上述の開口部から流通孔３１２を通して弾性押圧体２内に空気を供給し、弾性押圧体２を膨出させる。そして、乾燥型５の成形面５０に抄造体１０を押圧しながら流通路５１を吸引し、抄造体１０の乾燥成形を行う。このとき、抄造体１０の水分は、乾燥型５の流通路５１から外部に強制的に排出される。このように、抄造体１０の内部から弾性押圧体２によって押圧することで、抄造体１０の乾燥と共に外表面に乾燥型５の成形面５０の形状を精度良く転写することができ、得られる抄造成形体１１（図２（ｄ）参照）の表面も平滑にすることができる。 Next, as shown in FIG. 2 (b), air is supplied into the elastic pressing body 2 from the above-described opening of the core 1 through the flow hole 312 to bulge the elastic pressing body 2. And the flow path 51 is attracted | sucked, pressing the papermaking body 10 on the molding surface 50 of the dry mold 5, and the papermaking body 10 is dry-molded. At this time, the moisture of the papermaking body 10 is forcibly discharged from the flow path 51 of the drying mold 5 to the outside. Thus, by pressing with the elastic pressing body 2 from the inside of the papermaking body 10, the shape of the molding surface 50 of the drying die 5 can be accurately transferred to the outer surface as the papermaking body 10 is dried, and the papermaking obtained. The surface of the molded body 11 (see FIG. 2D) can also be smoothed.
このとき、可動管３１は、その自重によって弾性押圧体２の延びに応じて下方に下がり、その先端部が弾性押圧体２の下端部の内面に接した状態になる。 At this time, the movable tube 31 is lowered downward according to the extension of the elastic pressing body 2 by its own weight, and the distal end portion thereof is in contact with the inner surface of the lower end portion of the elastic pressing body 2.
乾燥型５の温度（型の温度）は、抄造体１０の焦げ付き防止、乾燥効率向上の点から１００〜２５０℃が好ましく、１２０〜２２０℃がより好ましい。なお、乾燥効率向上の点から乾燥型５内に抄造体１０を配する前に、乾燥型５を加熱して所定温度に保持しておくことが好ましい。 The temperature of the drying mold 5 (mold temperature) is preferably 100 to 250 ° C., more preferably 120 to 220 ° C. from the viewpoint of preventing the papermaking 10 from being burnt and improving the drying efficiency. In order to improve the drying efficiency, it is preferable to heat the drying mold 5 and keep it at a predetermined temperature before placing the papermaking body 10 in the drying mold 5.
弾性押圧体２内に流体を供給する際の該流体の圧力は、乾燥に供する抄造体１０に応じて適宜設定することができるが、０．０１〜５ＭＰａ、特に０．１〜３ＭＰａが好ましい。前記弾性押圧体２を膨張させるために用いる流体としては、例えば空気、熱風（加熱された加圧空気）、蒸気、過熱蒸気等の気体、油（加熱油）、その他の液が挙げられる。特に、加圧空気、熱風、過熱蒸気を用いることが、操作性等の点から好ましい。 The pressure of the fluid when supplying the fluid into the elastic pressing body 2 can be appropriately set according to the papermaking body 10 to be dried, but is preferably 0.01 to 5 MPa, particularly preferably 0.1 to 3 MPa. Examples of the fluid used for expanding the elastic pressing body 2 include air, hot air (heated pressurized air), gas such as steam and superheated steam, oil (heating oil), and other liquids. In particular, it is preferable to use pressurized air, hot air, and superheated steam from the viewpoint of operability.
抄造体１０が所定の含水率にまで乾燥されたら、中子１の開口部からの流体の供給を停止し、図２（ｃ）に示すように、弾性押圧体２内の流体を中子１の開口部から排出して弾性押圧体２を収縮させ、屈曲部２０を収容口３１１から可動管３１内に収容する。このとき、前述のように、可動管３１の先端部が弾性押圧体２の下端部に接しているため、弾性押圧体２の収縮及び収容口３１１からの屈曲部２０の収納がスムーズに行なわれる。その後、抄造成形体１１内から中子１を引き上げる。 When the papermaking body 10 is dried to a predetermined moisture content, the supply of fluid from the opening of the core 1 is stopped, and the fluid in the elastic pressing body 2 is allowed to flow into the core 1 as shown in FIG. The elastic pressing body 2 is contracted by discharging from the opening, and the bent portion 20 is accommodated in the movable tube 31 from the accommodation port 311. At this time, as described above, since the distal end portion of the movable tube 31 is in contact with the lower end portion of the elastic pressing body 2, the elastic pressing body 2 is contracted and the bent portion 20 is stored from the receiving port 311 smoothly. . Thereafter, the core 1 is pulled up from the papermaking molded body 11.
次に、前記乾燥型５を開き、図２（ｄ）に示すように、乾燥成形された抄造成形体１１を乾燥型５から取り出してその製造を終了する。抄造成形体１１には、必要に応じ、トリミング処理、印刷処理、内外面仕上げ加工等の各種処理を施すことができる。 Next, the drying mold 5 is opened, and as shown in FIG. 2 (d), the paper-molded molded body 11 that has been dry-molded is taken out of the drying mold 5 and the production is completed. The papermaking molded body 11 can be subjected to various processes such as trimming, printing, and inner / outer surface finishing as required.
このように、本実施形態の中子１には、伸長可能な管体３が設けられており、乾燥成形時に、その先端部が弾性押圧体２に接するので、弾性押圧体２を収縮させたときにも、弾性押圧体２の収縮及び収容をスムーズに行うことができ、弾性押圧体２の収縮形態が嵩張ることがない。従って、抄造成形体１１の内面を損傷することなく、また抄造成形体１１の内面の表面性を低下させることなく、抄造成形体１１を製造することができる。本発明の中子は、中子の挿入方向とは異なる方向に突出する部分を有する抄造成形体の製造に特に有用である。 As described above, the core 1 of the present embodiment is provided with the expandable tube body 3, and the distal end portion thereof is in contact with the elastic pressing body 2 at the time of dry molding, so that the elastic pressing body 2 is contracted. Sometimes, the elastic pressing body 2 can be contracted and accommodated smoothly, and the contraction form of the elastic pressing body 2 does not become bulky. Therefore, the papermaking molded body 11 can be manufactured without damaging the inner surface of the papermaking molded body 11 and without reducing the surface properties of the inner surface of the papermaking molded body 11. The core of the present invention is particularly useful for the manufacture of a paper-molded molded body having a portion protruding in a direction different from the insertion direction of the core.
本発明は、前記各実施形態に制限されるものではなく、本発明の趣旨を逸脱しない範囲において、適宜変更することができる。 The present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the present invention.
本発明の中子は、管体を伸長させる可動管の可動機構に特に制限はない。前記実施形態の中子１のような可動機構以外に、例えば、図３に示すように、基管３０のフランジ部３００と可動管３１の端部との間にスプリング等の弾性体３３を介在させて管体３１を伸長可能にすることもできる。 The core of the present invention is not particularly limited in the movable mechanism of the movable tube that extends the tubular body. In addition to the movable mechanism such as the core 1 of the embodiment, for example, as shown in FIG. 3, an elastic body 33 such as a spring is interposed between the flange portion 300 of the base tube 30 and the end portion of the movable tube 31. It is also possible to make the tubular body 31 extendable.
本発明の中子は、可動管３１が収容口３１１を有しないこともある。すなわち、製造される抄造成形体１１が直管（図１において屈曲部２０がない形状）の場合には、収容口３１１を設けないこともある。 In the core of the present invention, the movable tube 31 may not have the accommodation port 311. That is, when the papermaking molded body 11 to be manufactured is a straight pipe (a shape without the bent portion 20 in FIG. 1), the accommodation port 311 may not be provided.
弾性押圧体の形状を成形体の形状に可能な限り近い形状にすれば、抄造成形体は弾性押圧体によって無理なく押圧され、弾性押圧体の耐久性も向上する。そこで、抄造成形体が直管であっても、抄造成形体の開口部の径がそれ以外の部分の径よりも小さい場合には、収容口を設ける方が好ましい。それは、径の関係がこのような場合に、弾性押圧体に収容口を設けずに、可動管に弾性押圧体を吸着させても、弾性押圧体が抄造成形体の開口部の径よりも大きくなり、該弾性押圧体を該抄造成形体の開口部から内部に入れたときに、該弾性押圧体の一部が該抄造成形体の開口部等に接触して、該抄造成形体の表面性が低下することがあるからである。 If the shape of the elastic pressing body is made as close as possible to the shape of the molded body, the papermaking molded body is pressed by the elastic pressing body without difficulty, and the durability of the elastic pressing body is improved. Therefore, even if the papermaking molded body is a straight pipe, it is preferable to provide an accommodation port when the diameter of the opening of the papermaking molded body is smaller than the diameter of the other portions. In such a case, the elastic pressing body is larger than the diameter of the opening of the papermaking molded body even if the elastic pressing body is adsorbed to the movable tube without providing the accommodation opening in the elastic pressing body in such a case. When the elastic pressing body is inserted into the papermaking molded body from the opening, a part of the elastic pressing body comes into contact with the opening of the papermaking molded body, and the surface property of the papermaking molded body. This is because there is a case where the lowering may occur.
また、本発明の抄造成形体の製造方法は、前記実施形態におけるように、乾燥成形工程において前記中子を用いることが好ましいが、該中子は、抄造体の脱水成形工程のみ用いることもできるし、脱水成形工程及び乾燥成形工程の両工程にも用いることもできる。脱水成形の際の流体及び押圧力は、例えば、前記乾燥成形におけると同様の流体及び押圧力を適用することができる。 In the method for producing a papermaking molded body of the present invention, the core is preferably used in the dry molding step as in the above embodiment, but the core can be used only in the dewatering molding step of the papermaking body. It can also be used in both the dehydration molding process and the dry molding process. As the fluid and pressing force at the time of dehydration molding, for example, the same fluid and pressing force as in the dry molding can be applied.
１ 抄造成形体製造用中子
２ 弾性押圧体
３ 管体
３０ 基管
３１ 可動管
３１１ 収容口
４ 固定治具
５ 乾燥型
１０ 抄造体
１１ 抄造成形体
DESCRIPTION OF SYMBOLS 1 Core for manufacture of a papermaking molded object 2 Elastic press body 3 Tubing body 30 Base pipe 31 Movable pipe 311 Accommodating port 4 Fixing jig 5 Drying type 10 Papermaking body 11 Papermaking molding body
Claims (3)
伸縮可能な袋状の弾性押圧体と、該弾性押圧体内に配されて該弾性押圧体内に流体を供給する管体とを備え、
前記管体は、固定された基管と、該基管に対しその長さ方向に往復動する可動管とを有し、
前記可動管の自重によって、又は、前記基管と前記可動管との間に弾性体を介在させて、前記可動管が前記弾性押圧体の延びに応じて下方に下がり、前記可動管の先端部が前記弾性押圧体の下端部の内面に接するように伸長可能である抄造成形体製造用中子。 A core for manufacturing a paper-molded body used for manufacturing a paper-molded body,
A telescopic bag-like elastic pressing body, and a pipe body that is arranged in the elastic pressing body and supplies a fluid to the elastic pressing body,
The tube has a fixed base tube and a movable tube that reciprocates in the length direction with respect to the base tube,
Due to the dead weight of the movable tube or by interposing an elastic body between the base tube and the movable tube, the movable tube descends downward according to the extension of the elastic pressing body, and the tip of the movable tube A core for producing a paper-molded molded body, which is extendable so as to be in contact with the inner surface of the lower end portion of the elastic pressing body .
前記管体は、その前記可動管の先端側面部で前記屈曲部に対向する位置に前記弾性押圧体の該屈曲部を収容する収容口を有している請求項１記載の抄造成形体製造用中子。 The elastic pressing body has a bent portion corresponding to the shape of the papermaking molded body to be molded,
The tube body, for the papermaking manufacturing a molded body according to claim 1, wherein having an accommodating opening for accommodating the bent portion of the elastic pressing member at a position opposed to the bent portion at the tip side portion of the movable tube Nakako.
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| JP2000239999A (en) * | 1999-02-18 | 2000-09-05 | Kao Corp | Production of molded pulp article |
| JP2001115400A (en) * | 1999-10-05 | 2001-04-24 | Kao Corp | Method for producing pulp molded product |
| JP2002266299A (en) * | 2001-03-06 | 2002-09-18 | Kao Corp | Core for producing molded pulp body |
| JP2003096700A (en) * | 2001-09-21 | 2003-04-03 | Kao Corp | Method for producing molded product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000239999A (en) * | 1999-02-18 | 2000-09-05 | Kao Corp | Production of molded pulp article |
| JP2001115400A (en) * | 1999-10-05 | 2001-04-24 | Kao Corp | Method for producing pulp molded product |
| JP2002266299A (en) * | 2001-03-06 | 2002-09-18 | Kao Corp | Core for producing molded pulp body |
| JP2003096700A (en) * | 2001-09-21 | 2003-04-03 | Kao Corp | Method for producing molded product |
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