JPH02251700A - Air-pressure forming of pulp fiber slurry - Google Patents
Air-pressure forming of pulp fiber slurryInfo
- Publication number
- JPH02251700A JPH02251700A JP18336688A JP18336688A JPH02251700A JP H02251700 A JPH02251700 A JP H02251700A JP 18336688 A JP18336688 A JP 18336688A JP 18336688 A JP18336688 A JP 18336688A JP H02251700 A JPH02251700 A JP H02251700A
- Authority
- JP
- Japan
- Prior art keywords
- water
- mold
- pulp
- pulp fibers
- fibers
- 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.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 239000002002 slurry Substances 0.000 title claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 22
- 239000000057 synthetic resin Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 26
- 239000003063 flame retardant Substances 0.000 claims description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 15
- 239000013055 pulp slurry Substances 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は故紙、パルプ廃材などによるパルプ繊維泥漿物
を原料として、パツキン材、クツシラン材などの殻状構
造即ち中空体を成形する方法に関するものである。[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a method for molding shell-like structures, ie, hollow bodies, such as packing materials and kutsushiran materials, using pulp fiber slurry made from waste paper, pulp waste, etc. as a raw material. .
従来の技術
従来のこの種のパルプ繊維泥漿物を原料としての成形法
は、−船釣に湿式吸引成形法と呼ばれ、金網などの通水
性構造の型のまわりにパルプ繊維泥漿物を置き、パルプ
繊維泥漿物を型に吸引して水を排出すると同時にパルプ
繊維を型に沈着させて型に対称な゛中空体を形成し、次
いで含水したパルプ繊維中空体を加圧脱水を行うか、ま
たは行わずして自然または強制の乾燥を施して成形する
製造法が殆んどであった。Conventional technology The conventional molding method using pulp fiber slurry as a raw material is called the wet suction molding method for boat fishing, in which the pulp fiber slurry is placed around a mold with a water-permeable structure such as a wire mesh. Pulp fiber slurry is sucked into a mold to drain water, and at the same time pulp fibers are deposited in the mold to form a hollow body symmetrical to the mold, and then the water-containing pulp fiber hollow body is dehydrated under pressure, or In most manufacturing methods, the material is molded by natural or forced drying without drying.
しかも、上記の方法で成形したパルプ繊維中空体は成形
構造が単に繊維の絡みによるものであるために強度上脆
弱性が有り、従ってパルプ繊維泥漿物中に、あらかしめ
熱硬化性、または熱可塑性の合成樹脂を混合含有させ、
吸引成形法により成形した後に加熱加圧して中空体内部
に含有存在する合成樹脂を溶融固化し、これにより繊維
の錯綜接触間を合成樹脂を固めて結合し、強度を増加す
る方法が採られていた。Moreover, the pulp fiber hollow body formed by the above method is weak in strength because the molded structure is simply due to the entanglement of fibers, and therefore the pulp fiber slurry has some thermosetting or thermoplastic properties. mixed with synthetic resin,
After molding using the suction molding method, the synthetic resin contained inside the hollow body is melted and solidified by heating and pressurizing, thereby solidifying and bonding the synthetic resin between the intertwined contacts of the fibers, increasing the strength. Ta.
また、難燃処理としては、パルプ繊維泥漿物に難燃剤を
混合することにより行なわれていた。Furthermore, flame retardant treatment has been carried out by mixing a flame retardant into pulp fiber slurry.
発明が解決しようとする問題点
上記の従来より行なわれている湿式吸引成形法は、パル
プ繊維泥漿物を通水型に吸引して１＜ルブ繊維を通水型
上に沈着させ、所要の形状の中空体を製造していたが、
パルプ繊維を通水型に水と共に吸引させて沈着させるた
めに、中空体におけるパルプ繊維の層を形作る際に、そ
れ程大きい圧力または凝集力が加わらず、層密度は緻密
にならない。さらに、水と共に吸引のために、水の排出
速度及び排出力の大なる部分にパルプ繊維が片寄り、中
空体の層自体が不均等になり易く、特に屈曲部などの箇
所に偏肉の欠陥が顕著に現われる。Problems to be Solved by the Invention In the conventional wet suction molding method described above, pulp fiber slurry is sucked into a water-flowing mold, 1<lube fibers are deposited on the water-flowing mold, and the desired shape is formed. They were manufacturing hollow bodies for
Since the pulp fibers are deposited by suctioning them together with water in a water-through type, no great pressure or cohesive force is applied when forming the pulp fiber layer in the hollow body, and the layer density is not dense. Furthermore, due to suction together with water, the pulp fibers tend to be biased in areas where the water discharge speed and discharge force are large, and the hollow body layer itself tends to become uneven, resulting in defects such as uneven thickness, especially in places such as bends. appears prominently.
本発明の方法は上記の通りの低い層密度即ち強度の脆弱
性と層の偏肉を解決し−ようとするものである。The method of the present invention attempts to solve the above-mentioned low layer density, that is, weakness in strength and uneven thickness of the layers.
さらに、従来より行なわれている成形した中空体の強度
を増加するための合成樹脂混合法または難燃化処理のた
めの難燃剤処理法はパルプ繊維泥漿物を作成する際に粉
状、粒状または液状の合成樹脂または難燃剤を混合する
が、繊維との比重の差、或いは水との比重の差により均
一に分散せず、しかも繊維自体の内部に含浸せず、従っ
て合成樹脂または難燃剤を使用する量の割には成形物の
強度が増加したり、或いは難燃性が向上したりすること
がなかった。Furthermore, conventional methods of mixing synthetic resins to increase the strength of molded hollow bodies or treating them with flame retardants to make them flame retardant produce pulp fiber slurry in the form of powder, granules or Liquid synthetic resin or flame retardant is mixed, but it is not dispersed uniformly due to the difference in specific gravity with the fibers or with water, and the synthetic resin or flame retardant is not impregnated into the fibers themselves. Considering the amount used, the strength of the molded product did not increase or the flame retardance did not improve.
本発明の方法は、また合成樹脂または難燃剤の添加を有
効に利用して効果を完全に発揮させようとするものであ
る。The method of the present invention also makes effective use of the addition of synthetic resins or flame retardants to achieve the full effect.
問題を解決するための手段
本発明は上記に述べた従来よりの問題点を解決する新し
い技術であるが、それは二つの新しい方法から成るもの
である。Means for Solving the Problems The present invention is a new technique for solving the above-mentioned conventional problems, and it consists of two new methods.
その一つは、パルプ繊維泥漿物を原料として中空体を成
形するに際して、圧力空気を利用する技術であり、他の
一つは、原料としてのパルプ繊維泥漿物を作成する際に
、あらかじめパルプ繊維自体に減圧含浸法により合成樹
脂または難燃剤を含有させる技術である。One is a technology that uses pressurized air when forming a hollow body using pulp fiber slurry as a raw material, and the other is a technology that uses pulp fiber slurry in advance when creating pulp fiber slurry as a raw material. This is a technique in which synthetic resin or flame retardant is incorporated into the material itself using a vacuum impregnation method.
さて、始めの一つの方法であるパルプ繊維泥漿物より中
空体を成形するに当って圧力空気を利用する方法は、金
網を張設する型、または通水孔を多数黒膜した型などの
通水型の型面のまわりを密閉室で覆い、通水型に所要量
のパルプ繊維泥漿物（以下泥漿物と略称する。）を置き
、空閉室内に空気−を送り込んで圧力を高め、これによ
り通水型に泥漿物を強く押し付けると同時に圧縮して水
を通水型より排出し、パルプ繊維層のみを通水型上に形
成させて中空体を成形することを特徴とするもの−であ
る。Now, one of the first methods, which uses pressurized air to mold a hollow body from pulp fiber slurry, uses a mold with a wire mesh or a mold with many water holes covered with a black film. The mold surface of the water mold is covered with a closed chamber, the required amount of pulp fiber slurry (hereinafter referred to as slurry) is placed in the water mold, and air is sent into the closed chamber to increase the pressure. The method is characterized in that a slurry is strongly pressed against a water-permeable mold, simultaneously compressed, and the water is discharged from the water-permeable mold, and only a pulp fiber layer is formed on the water-permeable mold to form a hollow body. be.
弦に上記の成形法の理解を早めるために、実施例に基す
き以下詳細に説明する。In order to speed up the understanding of the above-mentioned string forming method, a detailed explanation will be given below based on an example.
第１図乃至第４図に示した実施例の装置は第５図及び第
６図に示した形状の中空体Ａを成形すするものである。The apparatus of the embodiment shown in FIGS. 1 to 4 is for molding a hollow body A having the shape shown in FIGS. 5 and 6.
第１図においては、上部に原料供給管１と空気圧送管２
を連結した密閉筒３の下部には内外移動の案内する軌条
４を設け、軌条４”の上には密閉筒３の下方開口部に密
着するために内方に移動し且つ密閉筒３の外方に脱出移
動する様に保持枠５を設け、保持枠５には所要の形状に
形作られた通水型６を固定する。In Figure 1, a raw material supply pipe 1 and a pneumatic feed pipe 2 are shown at the top.
A rail 4 is provided at the bottom of the sealed cylinder 3 connected to the cylinder 3 to guide the movement inward and outward, and a rail 4 is provided above the rail 4'' to guide the movement inward and outside the cylinder 3 in order to tightly contact the lower opening of the cylinder 3. A holding frame 5 is provided so as to be able to escape in the opposite direction, and a water passing mold 6 formed into a desired shape is fixed to the holding frame 5.
なお、軌条４には密閉筒３の下方開口部に対応する様に
排水ロアを設け、排水ロアの下部には排水管８を連結し
た排水受筒９を設ける。In addition, a drainage lower is provided on the rail 4 so as to correspond to the lower opening of the sealed cylinder 3, and a drainage receiver 9 to which a drainage pipe 8 is connected is provided below the drainage lower.
また、通水型６は基枠に所要の形状に凹凸させた金網型
を張設する構造、或いは所要の形状に凹凸させて製作し
た金属製型に多数の小孔を恵投する構造が一般的である
。In addition, the water flow mold 6 generally has a structure in which a metal mesh mold with a desired shape is stretched over the base frame, or a structure in which a large number of small holes are formed in a metal mold made with a desired shape in a rough shape. It is.
しかし、上記の構造にとられれるもので無く、パルプ繊
維は通過せず、水のみ濾過排出する構造ならば、如何な
る型でも良い。However, it does not have the above structure, and any type may be used as long as it does not allow pulp fibers to pass through and only filters and discharges water.
そこで、軌条４の上を保持枠５の摺動により通水型６を
密閉筒３の下方開口部に合致させる様に移動す。Then, by sliding the holding frame 5 on the rail 4, the water passage mold 6 is moved so as to match the lower opening of the sealing cylinder 3.
第２図においては密閉筒３の下方開口部に通水型６が密
接停止した状態であり、この状態において密閉筒３に原
料供給管ｌを介して泥漿物Ｐを適当量送り込み、通水型
６の上に所要量の泥漿物Ｐを待機させる。In Fig. 2, the water passing type 6 is tightly stopped at the lower opening of the sealed cylinder 3, and in this state, an appropriate amount of slurry P is fed into the sealed cylinder 3 through the raw material supply pipe l, and the water passing type A required amount of slurry P is made to stand by on top of 6.
第３図においては、密閉筒３の内部に所要量の泥漿物Ｐ
を供給した後に原料供給管１を閉止し、空気圧送管２に
より密閉筒３の内部に高圧空気を送り込む状態であり、
密閉筒３の内部に高圧空気を注入することにより、内部
気圧が高まり、泥漿物Ｐは通水型６に高圧で押し付けら
れる。In FIG. 3, the required amount of slurry P is inside the sealed cylinder 3.
After supplying the material, the raw material supply pipe 1 is closed, and high pressure air is sent into the sealed cylinder 3 by the pneumatic feed pipe 2,
By injecting high-pressure air into the inside of the sealed cylinder 3, the internal pressure increases, and the slurry P is pressed against the water-passing mold 6 at high pressure.
従って、泥漿物Ｐはパルプ繊維と水に分離し、水は通水
型６を透過して排水ロア、排水受筒９より排水管８へと
脱水され、パルプ繊維は通水型６の面に強い圧力で押え
付けられながら層を形作る。Therefore, the slurry P is separated into pulp fibers and water, and the water passes through the water-passing mold 6 and is dewatered from the drainage lower and drain tube 9 to the drain pipe 8, and the pulp fibers are deposited on the surface of the water-passing mold 6. The layers are formed while being pressed down with strong pressure.
そして、第４図においては、密閉筒３の下方開口部から
外方へ保持枠５の摺動により通水型６が脱出した状態で
あり、通水型６にはパルプ繊維の層による中空体Ａが付
着しており、吸引法、その他公知の方法により中空体Ａ
を通水型６より離脱させれば、第５図、第６図に示す形
状の中空体Ａが形成される。In FIG. 4, the water passing mold 6 has escaped from the lower opening of the sealing cylinder 3 by sliding the holding frame 5 outward, and the water passing mold 6 has a hollow body made of a layer of pulp fibers. A is attached, and hollow body A is removed by suction method or other known method.
When removed from the water passage mold 6, a hollow body A having the shape shown in FIGS. 5 and 6 is formed.
なお、通水型６より離型した中空体Ａは、未だ含水状態
であり、その後の工程で加圧・圧縮したり、加熱乾燥法
を利用したり、天日乾燥法を行ったりして完全乾燥を施
し、製品となすものである。Note that the hollow body A released from the water-passing mold 6 is still in a water-containing state, and is completely dried by pressurizing and compressing it in the subsequent process, using a heating drying method, or performing a solar drying method. It is dried and made into a product.
さて、次の一つの方法であるパルプ泥漿物Ｐを作成する
際に、あらかじめパルプ繊維自体に減圧含浸法により合
成樹脂または難燃剤を含有させる方法は次の通りである
。Now, the next method, when preparing the pulp slurry P, is to incorporate a synthetic resin or a flame retardant into the pulp fiber itself in advance by vacuum impregnation method, as follows.
即ち、密閉筒内に故゛絨、パルプ廃材などを充分に解繊
し且つ乾燥状態に保ったパルプ繊維を投入し、次いで液
体状の合成樹脂または難燃剤を投入して密閉筒内を減圧
雰囲気に保てば、液状の合成樹脂または難燃剤はパルプ
繊維自体の内深部まで浸入し、保持される。That is, the pulp fibers, which have been thoroughly defibrated from waste fibers and pulp waste materials and kept in a dry state, are put into a sealed cylinder, and then liquid synthetic resin or flame retardant is put in, and the inside of the sealed cylinder is created in a reduced pressure atmosphere. If the pulp fibers are kept at a constant temperature, the liquid synthetic resin or flame retardant will penetrate deep into the pulp fibers and be retained therein.
そして、合成樹脂または難燃剤を含浸したパルプ繊維を
密閉筒から取り出し、予備熱処理などにより合成樹脂ま
たは難燃剤をパルプ繊維に定着させ、このパルプ繊維に
水及び必要な助剤を加えて泥漿物となすものである。Then, the pulp fibers impregnated with synthetic resin or flame retardant are taken out from the sealed cylinder, the synthetic resin or flame retardant is fixed on the pulp fibers by preheating treatment, etc., and water and necessary auxiliary agents are added to the pulp fibers to form a slurry. It is what you do.
なお、使用するのが合成樹脂の場合には、フェノール樹
脂縮合物の様に常温常態下で液体状を呈するものが最適
であるが、水または有機溶液により分散または溶解した
合成樹脂の溶液または慰濁液でも良い。If a synthetic resin is used, it is best to use a resin that is liquid at room temperature, such as a phenolic resin condensate. A cloudy liquid may also be used.
また、使用するのが難燃剤の場合には、−船釣に縮合リ
ン酸アンモニウム溶液などのリン酸系薬剤液であり、種
類を問わないが、比重が小さく、粘度が低いものを選択
する必要がある。In addition, if flame retardants are to be used, - For boat fishing, it is a phosphoric acid-based chemical solution such as a condensed ammonium phosphate solution, and although the type does not matter, it is necessary to select one with low specific gravity and low viscosity. There is.
作用及び発明の効果
パルプ繊維泥漿物を原料として気体圧により中空体を成
形する方法においては、気圧を充分に高めれば、大気圧
との差により、通水型上のパルプ繊維泥漿物の水は迅速
に通水型の外部に排出されるために脱水成形のサイクル
が極めて短縮され、高い能率が得られると共に脱水の状
態が極めて良好で成形後の含水率が低いために乾燥工程
が大巾に削減されて作業性が極めて向上する。Action and Effect of the Invention In the method of molding a hollow body using gas pressure using pulp fiber slurry as a raw material, if the atmospheric pressure is raised sufficiently, the water in the pulp fiber slurry on the water-through die will flow due to the difference from atmospheric pressure. Because the water is quickly discharged to the outside of the mold, the dehydration molding cycle is extremely shortened, resulting in high efficiency, and the drying process is greatly reduced due to the excellent dewatering conditions and low moisture content after molding. This greatly improves work efficiency.
また、通水型にパルプ繊維泥漿物を押し付は付着させる
のが密閉室内における空気圧力のために、その圧力は総
ての壁面に均当に加わり、屈曲部などの凹凸の激しい形
状にても形成する層の厚みは全面はぼ均等であると共に
層自体の繊維の密度も極めて高くなる。In addition, because the air pressure in the closed chamber presses and adheres the pulp fiber slurry to the water-permeable mold, the pressure is applied evenly to all wall surfaces, and even on highly uneven shapes such as bends. The thickness of the layer formed is almost uniform over the entire surface, and the density of the fibers in the layer itself is also extremely high.
しかも、空気圧力により通水型にパルプ繊維泥漿物を押
え付けることにより層を形成するために、吸水、即ち吸
引力により繊維を沈着させて層を形成することによる繊
維の方向性は解消して繊維がランダムに錯綜し且つ絡み
合って層゛を形成する。Moreover, since the layer is formed by pressing the pulp fiber slurry against the water-permeable mold using air pressure, the directionality of the fibers, which is caused by water absorption, that is, depositing the fibers by suction force and forming the layer, is eliminated. The fibers are randomly intertwined and intertwined to form layers.
従って、本発明の方法により成形された製品は強度、剛
性はもとより靭性にも秀れ、パルプ繊維利用成形物の応
用範囲を極めて拡大することが出来る。Therefore, products molded by the method of the present invention are excellent not only in strength and rigidity but also in toughness, and the range of applications of molded products using pulp fibers can be greatly expanded.
また、パナブ繊維泥漿物を作成するに当ってパルプ繊維
にあらかじめ合成樹脂または難燃剤を減圧法により含浸
させるために、内部に充分に浸透し、しかも水に混合し
て泥漿物にする際にも、繊維と合成樹脂または難燃剤が
遊離し、偏在することが全く解消し、総てのパルプ庫維
に均等に効果を発揮して全体的には顕著に性能を向上し
、さらに社成形した中空体を加熱した際には、合成樹脂
の場合、繊維の接点が互いに係路融着して層の構造を極
めて強化し、引張強度が改善される。難燃剤の場合にて
も、効果が方送なく行き渡り難燃性に安心する仁とが出
来る。In addition, when creating Panab fiber slurry, the pulp fibers are pre-impregnated with synthetic resin or flame retardant using a reduced pressure method, so that it penetrates into the inside sufficiently and is also effective when mixed with water to make slurry. , the looseness and uneven distribution of fibers and synthetic resins or flame retardants is completely eliminated, and the effect is exerted evenly on all pulp fibers, resulting in a marked improvement in overall performance. When the body is heated, in the case of synthetic resins, the contact points of the fibers fuse to each other, greatly strengthening the layer structure and improving the tensile strength. Even in the case of flame retardants, the effect is uniform and the flame retardant property is reliable.
第１図乃至第４図は本発明の詳細な説明するための実施
例装置の工程を示す一部縦断正面図、第５図は同上の装
置で成形した中空体の斜視図、第６図は第５図の中空体
の縦断正面図である。
Ａ・・・中空体、１・・・原料供給管、２・・・空気圧
送管、３・・・密閉督、４・・・軌条、５・・・保持枠
、６・・・通水型、７・・・排水口、８・・・排水管、
９・・・排水受筒、Ｐ・パルプｍｍ泥漿物
第
図
第
図
２・・・鵬１
３・・４’ＦＪＩ盾
４・・・朝烹1 to 4 are partially vertical front views showing the process of an embodiment of the apparatus for explaining the present invention in detail, FIG. 5 is a perspective view of a hollow body formed by the same apparatus, and FIG. 6 is a FIG. 6 is a longitudinal sectional front view of the hollow body of FIG. 5; A...Hollow body, 1...Raw material supply pipe, 2...Pneumatic feed pipe, 3...Sealing control, 4...Rail, 5...Holding frame, 6...Water flow type , 7... Drain port, 8... Drain pipe,
9... Drainage tube, P pulp mm slurry diagram Figure 2... Peng 1 3... 4'FJI shield 4... Asao
Claims (1)
ルプ繊維泥漿物を置き、密閉室内の気圧を高めてパルプ
繊維泥漿物を型面に強く押し付けると同時に水とパルプ
繊維を分離し、水は通水型を透過して外部へ排出し、パ
ルプ繊維は型面に層を形成させて中空体を成形すること
を特徴とするパルプ繊維泥漿物の気圧成形法。 ２、解繊・乾燥したパルプ繊維と液体状の合成樹脂また
は難燃剤とを密閉筒に入れ、密閉筒内を減圧することに
より合成樹脂または難燃剤をパルプ繊維の内深部まで含
浸させ、このパルプ繊維による泥漿物を使用することを
特徴とする特許請求の範囲１記載のパルプ繊維泥漿物の
気圧成形法。[Claims] 1. Cover the mold surface of the water-permeable mold with a sealed chamber, place a required amount of pulp fiber slurry on the mold surface, and increase the air pressure in the sealed chamber to firmly apply the pulp fiber slurry to the mold surface. A pulp fiber slurry characterized in that water and pulp fibers are separated at the same time as they are pressed, the water passes through a water-passing mold and is discharged to the outside, and the pulp fibers form a layer on the mold surface to form a hollow body. Pressure forming method. 2. Put the defibrated and dried pulp fibers and liquid synthetic resin or flame retardant into a sealed cylinder, and reduce the pressure inside the sealed cylinder to impregnate the synthetic resin or flame retardant deep into the pulp fibers. 2. A method for pressure forming a pulp fiber slurry according to claim 1, characterized in that a slurry made of fibers is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183366A JP2542240B2 (en) | 1988-07-22 | 1988-07-22 | Pneumatic molding of pulp fiber sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183366A JP2542240B2 (en) | 1988-07-22 | 1988-07-22 | Pneumatic molding of pulp fiber sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02251700A true JPH02251700A (en) | 1990-10-09 |
| JP2542240B2 JP2542240B2 (en) | 1996-10-09 |
Family
ID=16134508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63183366A Expired - Lifetime JP2542240B2 (en) | 1988-07-22 | 1988-07-22 | Pneumatic molding of pulp fiber sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2542240B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0530059U (en) * | 1991-09-26 | 1993-04-20 | 勲 郷古 | drum |
| US6605187B1 (en) | 1999-11-17 | 2003-08-12 | Kao Corporation | Method for producing pulp molded article |
| CN106078392A (en) * | 2016-07-26 | 2016-11-09 | 永发（河南）模塑科技发展有限公司 | Paper pulp moulding product trimming, gold stamping and trimming polishing linkage production line and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4848570A (en) * | 1971-10-25 | 1973-07-10 |
-
1988
- 1988-07-22 JP JP63183366A patent/JP2542240B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4848570A (en) * | 1971-10-25 | 1973-07-10 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0530059U (en) * | 1991-09-26 | 1993-04-20 | 勲 郷古 | drum |
| US6605187B1 (en) | 1999-11-17 | 2003-08-12 | Kao Corporation | Method for producing pulp molded article |
| CN106078392A (en) * | 2016-07-26 | 2016-11-09 | 永发（河南）模塑科技发展有限公司 | Paper pulp moulding product trimming, gold stamping and trimming polishing linkage production line and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2542240B2 (en) | 1996-10-09 |
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