DK167254B1 - PROCEDURE FOR THE PREPARATION OF FORMED ARTICLES OF A FLUIDIZED CELLULOSE FIBER MATERIAL - Google Patents
PROCEDURE FOR THE PREPARATION OF FORMED ARTICLES OF A FLUIDIZED CELLULOSE FIBER MATERIAL Download PDFInfo
- Publication number
- DK167254B1 DK167254B1 DK408888A DK408888A DK167254B1 DK 167254 B1 DK167254 B1 DK 167254B1 DK 408888 A DK408888 A DK 408888A DK 408888 A DK408888 A DK 408888A DK 167254 B1 DK167254 B1 DK 167254B1
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- DK
- Denmark
- Prior art keywords
- mold
- suction
- binder
- transfer
- particles
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/344—Moulds, cores, or mandrels of special material, e.g. destructible materials from absorbent or liquid- or gas-permeable materials, e.g. plaster moulds in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/242—Moulding mineral aggregates bonded with resin, e.g. resin concrete
- B29C67/243—Moulding mineral aggregates bonded with resin, e.g. resin concrete for making articles of definite length
Description
i DK 167254 B1in DK 167254 B1
Opfindelsen angår en fremgangsmåde til fremstilling af formede genstande af et fluidiseret cellulosefibermateria-le.The invention relates to a method for producing molded articles of a fluidized cellulosic fibrous material.
Ved et fluidiseret cellulosefibermateriale skal der 5 forstås et til fremstilling af de ønskede genstande egnet udgangsmateriale, der kan foreligge i våd eller i tør form, og som har fibrøs karakter. Som et udgangsmateriale i våd form kan der eksempelvis henvises til et fiberpulpmateriale, således som det anvendes eksempelvis til bakker og kartoner 10 til emballering af skøre og ømfindlige genstande såsom frugt, blomster, æg og genstande eksempelvis af glas. Pulpmaterialet består da i reglen af en opslæmmet, fibrøs cellulose. Som tørt udgangsmateriale kan der henvises til et fibermateriale, således som det anvendes i tørpapirfabrikation.By a fluidized cellulosic fibrous material, it is meant a starting material suitable for the manufacture of the desired articles which may be in wet or dry form and which is fibrous in nature. As a starting material in wet form, reference may be made, for example, to a fiber pulp material, such as it is used, for example, to trays and cartons 10 for packaging fragile and delicate items such as fruit, flowers, eggs and articles, for example glass. The pulp material then usually consists of a slurry, fibrous cellulose. As a dry starting material, reference may be made to a fiber material as used in dry paper fabrication.
15 Ved alle disse fabrikationsgrene drejer det sig nor malt om en kontinuerlig fremstilling af store serier af genstande i massefabrikation. Det er kendt i dette øjemed at anvende en fremstillingsteknik, ved hvilken udgangsmaterialet ved en afsætningsproces anbringes mod den kontur-20 givende yderside af en form, som er permeabel for at lade et luftformigt arbejdsmedium påvirke materialet igennem formens materiale. Til fremstilling af genstande af pulp anvendes da i stor udstrækning bearbejdede bronzeforme med en af vævede net af rustfrit stål fremstillet beklædning, 25 som udgør formens konturgivende del. opfindelsen skal i det følgende forklares nærmere på denne baggrund.15 In all these branches of manufacture, it is usually a continuous production of large series of articles in mass manufacture. To this end, it is known to employ a manufacturing technique in which the starting material is applied, during a deposition process, to the contouring exterior of a mold which is permeable to allow an gaseous working medium to influence the material through the material of the mold. For the manufacture of articles of pulp, then, extensively worked bronze molds are used with a garment made of woven stainless steel nets, 25 which forms the contour-forming part of the mold. The invention will be explained in more detail in the following.
De kendte bronzeforme har gennemborede kanaler til tilvejebringelse af en jævn fordeling af et påsugning fremkaldende vakuum over hele formens konturgivende yderside.The known bronze molds have pierced channels to provide an even distribution of a suction-inducing vacuum over the entire contour-giving outer surface of the mold.
30 Ved hjælp af dette vakuum tilvejebringes da en afsætning af fluidiseret materiale i den ønskede lagtykkelse på formens yderside, eksempelvis ved, at formen neddykkes i en pulpma-terialemasse. Vakuumbehandlingen kan fortsætte, når formen derefter løftes op af pulpmassen, således at det på formen 35 aflejrede materialelag udsættes for en indledende tørring. Derefter kan kanalerne udnyttes til fjernelse af det endnu DK 167254 B1 2 fugtige formede emne fra formen ved, at emnet igennem de samme kanaler påvirkes ved trykluft. Heraf fremgår, at én og samme bronzeform anvendes til en kontinuerlig fremstilling af genstande. Derved adskiller formen sig principielt fra 5 en i svensk patentskrift nr. 227 276 omhandlet støbeform til metalstøbning, der består af et findelt fast materiale sammenbundet med et bindemiddel, og som bliver destrueret ved en enkelt støbeoperation.By means of this vacuum, a deposit of fluidized material is then provided in the desired layer thickness on the outside of the mold, for example by immersing the mold in a pulp material. The vacuum treatment may continue as the mold is then lifted by the pulp so that the material layer deposited on the mold 35 is subjected to an initial drying. Subsequently, the ducts can be utilized to remove the still moist-shaped blank from the mold by affecting the blank through the same ducts by compressed air. It can be seen from this that one and the same bronze form is used for the continuous manufacture of objects. In this way, the mold differs in principle from a casting mold referred to in Swedish Patent No. 227,276, which consists of a finely divided solid material bonded to a binder and which is destroyed by a single casting operation.
Fra USA patentskrift nr. 2 079 667 kendes desuden en 10 sugeform til fremstilling af formede genstande af et cellulosef ibermateriale, men der er her tale om en keramisk støbeform.US Patent No. 2,079,667 also discloses a suction mold for producing shaped articles of a cellulosic fiber material, but this is a ceramic mold.
Den beskrevne traditionelle fremstillingsproces er langvarig og kostbar på grund af den tid og det kostbare 15 materiale, som skal anvendes til fremstilling af fomene. Den traditionelle fremstillingsproces har derfor ofte vist sig at være uhensigtsmæssig, når der kun skal produceres genstande i små serier, og til lave priser.The traditional manufacturing process described is lengthy and costly due to the time and costly material to be used in making the phomas. The traditional manufacturing process has therefore often proved to be inappropriate when only small series items are to be produced and at low prices.
Formålet med opfindelsen er at angive en vej, ad 20 hvilken man under bibeholdelse af en i sig selv fordelagtig afsætningsproces kan opnå en afkortelse af den samlede fremstillingstid regnet fra fremstillingen af formen til aflevering af den fremstillede genstand samtidig med, at selve omkostningerne for fremstillingen af formene sænkes, således 25 at den på en afsætningsproces beroende fremstillingsteknik kan gøres mere økonomisk og derved tillige gøres mere attraktiv til fremstilling af også små serier af genstande, og/-eller af specielt formede genstande.The object of the invention is to provide a way by which, while maintaining an advantageous marketing process in itself, a shortening of the total manufacturing time from the manufacture of the mold to delivery of the manufactured article can be achieved, while at the same time costing the production of the molds are lowered so that the manufacturing technique dependent on a marketing process can be made more economical and thereby also made more attractive for the production of even small series of articles, and / or of specially shaped articles.
Til opnåelse af dette formål angår opfindelsen en 30 fremgangsmåde til fremstilling af formede genstande af et fluidiseret cellulosefibermateriale, idet et lag af materialet ved påsugning afsættes på overfladen af en sugeform.In order to achieve this object, the invention relates to a method for producing molded articles of a fluidized cellulosic fibrous material, a layer of the material being deposited by suction on the surface of a suction mold.
Fremgangsmåden ifølge opfindelsen er ejendommelig ved, at der forud for afsætningen ved påsugning af et lag 35 af et fluidiseret cellulosemateriale en sugeform hertil, hvis formgivende del opbygges af et i løs form foreliggende DK 167254 B1 3 partikulært stenmateriale, hvis stenpartikler fastholdes i det væsentlige partielt mod hinanden ved hjælp af et hærde-ligt bindemiddel og/eller en forkilningsforbindelse i en stabil struktur. Derved vil der dannes en til dannelse af 5 en åben, stabil form med til foraydersiden gennemgående passager for luft. På denne måde kan den samlede fremstillingsproces, regnet fra begyndelsen af formens fremstilling, til aflevering af den fremstillede genstand afkortes ganske væsentligt, idet det ikke længere er nødvendigt at fremstille 10 en kostbar form af metal. Som følge både af den derved opnåede tidsbesparelse, og den samtidige anvendelse af prisbillige byggematerialer for formen bliver det herefter muligt at anvende den ovenfor beskrevne afsætningsteknik på økonomisk attraktiv måde til fremstilling også af små serier af 15 genstande, og/eller til fremstilling af specielt formede genstande.The process according to the invention is characterized in that prior to deposition by suction of a layer 35 of a fluidized cellulose material, a suction mold thereof, the forming part of which is built up of a particulate stone material whose rock particles are substantially partially retained, is formed. against each other by a hardenable binder and / or a cold junction in a stable structure. Thereby, an open, stable form will be formed to form 5 with passages for air passing through the front side. In this way, the overall manufacturing process, from the beginning of the mold manufacture, for delivery of the manufactured article can be greatly shortened, since it is no longer necessary to produce a costly form of metal. As a result of both the time savings thus obtained and the simultaneous use of low-cost building materials for the mold, it will then be possible to use the above-described marketing technique in an economically attractive way for the production of small series of articles and / or for the production of specially shaped ones. objects.
Fremgangsmåden udmærker sig altså overfor den kendte teknik både ved anvendelse af et prisbilligt, uorganisk råmateriale såsom sand, og ved en fremstillingsteknik, der 20 er enkel, kortvarig og dermed prisbillig i sammenligning med den tid og de omkostninger, som går med til fremstilling af de indledningsvis beskrevne kendte afsætningsforme.Thus, the process is distinguished from the prior art both by using an inexpensive, inorganic raw material such as sand, and by a manufacturing technique which is simple, short-lived and thus inexpensive in comparison with the time and cost involved in producing the known outlets initially described.
Hvis der i sammenholdelsesøjemed anvendes et partikulært stenmateriale, hvis partikler har en sådan størrelse 25 og fora, at de kan indgå en forkilingsforbindelse med hinanden, vil man om ønsket i det mindste delvis kunne undvære et bindemiddel.If, for purposes of comparison, a particulate rock material is used, the particles of which are of such size 25 and forums that they can make a cold connection with one another, if desired, at least in part, a binder will be absent.
Det ligger inden for opfindelsens rammer, at stenmaterialets partikler holdes sammen med en sådan styrke, at 30 formen er anvendelig til efterpresning af en på formen fremstillet genstand.It is within the scope of the invention that the particles of the rock material are held together with such strength that the mold is useful for post-pressing an article made on the mold.
Ved en udførelsesform for fremgangsmåden ifølge opfindelsen kan bindemidlet have en sådan overfladespænding, at det søger at opnå sin mindste overfladestørrelse. Herved 35 opnås, at bindemidlet - eventuelt i forbindelse med en opvarmning - løber sammen onkring formbyggematerialets partik- DK 167254 B1 4 ler, således at en tilklistring af luftpassagerne imellem partiklerne undgås, idet en sammenholdelse kun vil forekomme på de steder, hvor partiklerne er i direkte berøring med hinanden. I denne forbindelse kan det være hensigtsmæssigt, 5 at byggematerialets partikler har en afrundet form.In one embodiment of the method of the invention, the binder may have such surface tension that it seeks to achieve its minimum surface size. Hereby it is obtained that the binder - possibly in connection with a heating - coalesces around the particles of the molding material, so that an adhesion of the air passages between the particles is avoided, since a coherence will only occur in the places where the particles are present. direct contact with each other. In this connection, it may be convenient for the particles of the building material to have a rounded shape.
Heraf fremgår samtidig, at den tilstræbte porøsitet af formen kan kontrolleres og styres ved et tilpas valg af partikelmaterialets kornstørrelse, og fordeling af kornene, både til opnåelse af gunstige betingelser for fastholdelses-10 forbindelsen partiklerne imellem, og for en tilpas dimensionering af porøsiteten, for at undgå et uønsket trykfald over et byggemateriale, der er unødigt tæt.It is also apparent from this that the desired porosity of the mold can be controlled and controlled by a suitable choice of the particle size of the particulate material and distribution of the grains, both to obtain favorable conditions for the holding compound between the particles and for a suitable dimensioning of the porosity, for to avoid an unwanted pressure drop over a building material that is unnecessarily dense.
Ifølge opfindelsen kan der anvendes et bindemiddel, som efter partiklernes sammenbinding efterlader en fri over-15 flade, der er glattet. Herved kan der sikres et tilpas overfladeslip, også i tilfælde, hvor den konturgivende overflade på grund af den førnævnte overfladespændingseffekt ved det til partiklernes fastholdelse til hinanden anvendte bindemiddel fører til en fri overflade, som umiddelbart virker ru.According to the invention, a binder may be used which, after bonding the particles together, leaves a free surface which is smooth. Hereby a suitable surface slip can be secured, even in cases where the contouring surface due to the aforementioned surface tension effect of the binder used for holding the particles to each other leads to a free surface which immediately appears rough.
20 Ifølge opfindelsen kan der anvendes et bindemiddel, som indeholder et smelteligt glatningsmiddel. Formen kan da eksempelvis udsættes for en behandling med voks, olie eller et teflonprodukt. Det smeltelige glatningsmiddel kan modvirke en uønsket aflejring eller tilbageholdelse af fluidiseret 25 materiale, eksempelvis fibre, på formydersiden. Endvidere vil et smelteligt glatningsmiddel ved anvendelse af varme og sugning kunne medvirke til en rensning af porøsiteterne i formen.According to the invention, a binder containing a fusible straightening agent can be used. The mold can then, for example, be exposed to a treatment with wax, oil or a teflon product. The fusible smoothing agent can counteract an unwanted deposition or retention of fluidized material, for example fibers, on the shear side. Furthermore, a fusible smoothing agent using heat and suction may help to cleanse the porosities in the mold.
Fjernelsen af et emne, der er dannet ved afsætning 30 af et fluidiseret cellulosemateriale på formens konturgivende yderside ved hjælp af et luftformigt arbejdsmedium kan ifølge opfindelsen ske ved, at den dannede genstand aftages fra sugeformen ved hjælp af en overføringsform, som er indrettet til at samvirke med genstandens bort fra sugeformen vendende 35 side til fjernelse af genstanden fra denne yderside, idet overføringsformen forud for aftagningen fremstilles som DK 167254 B1 5 ovenfor angivet, og forbindes med en kilde for et en påsug-ning fremkaldende vakuum. Derefter aflægges genstanden eksempelvis på et transportbånd, som fører genstanden til et tørrekammer. Også sådanne overføringsforme er hidtil blevet 5 fremstillet af metal, eksempelvis bronze.The removal of a workpiece formed by depositing a fluidized cellulose material on the contour-providing outer surface of the mold by means of a gaseous working medium can according to the invention be effected by removing the formed article from the suction mold by means of a transfer mold adapted to cooperate. with the side facing away from the suction mold to remove the article from this outer surface, the transfer mold being prepared prior to removal as stated above and connected to a source of a suction-inducing vacuum. Then, for example, the article is deposited on a conveyor belt which leads the article to a drying chamber. Also, such transfer molds have heretofore been made of metal, for example bronze.
Dette betyder, at der også for denne del af den samlede fremstillingsproces kan anvendes et prisbilligt råmateriale i forbindelse med en fremstillingsteknik, der er enkel, kortvarig og dermed prisbillig i sammenligning med den tid 10 og de omkostninger, som går med til fremstilling af de kendte overføringsforme. Overføringsformen vil kunne fremstilles direkte med en på støbeformen fremstillet genstand som udgangsbasis, idet der eksempelvis af gips på dette emne frembringes en første hjælpeform (negativ) svarende til genstan-15 dens bort fra støbeformen vendende side, på denne første hjælpeform (negativ) frembringes en anden hjælpeform (positiv) eksempelvis ligeledes af gips, og overføringsformen (negativ) dannes derefter direkte på denne anden hjælpeform.This means that, for this part of the overall manufacturing process, an inexpensive raw material can also be used in connection with a manufacturing technique that is simple, short-lived and thus inexpensive in comparison with the time 10 and the costs involved in producing the known transfer molds. The transfer mold can be made directly with an article made on the mold as a starting base, for example, by plaster on this blank a first auxiliary mold (negative) corresponding to the object facing away from the mold is produced, on this first auxiliary mold (negative) other auxiliary form (positive), for example, also of plaster, and the transfer form (negative) is then formed directly on this second auxiliary form.
Det har vist sig at være hensigtsmæssigt, at en form, 20 som af det partikulære stenmateriale dannes ved hjælp af et termohærdende bindemiddel, varmehærdes, medens formens konturgivende yderside er frit beliggende, eller med andre ord ikke holdes i position eller facon af en hjælpeformpart. Anvendelsen af en sådan hjælpeformpart ville ellers kunne 25 resultere i, at bindemidlet på steder, hvor det kommer til at flyde dels mellem, og dels over stenpartiklerne, også kan komme til at berøre hjælpeformen, så at der dannes binde-middeltappe, som kan nedsætte formens senere ønskede slipegenskaber. Ved en passende fugtiggørelse af stenpartikel-30 massen ved tilsætning af væske, det være sig vand, et opløsningsmiddel eller et bindemiddel, vil det være muligt forlods at give stenpartikelmassen en konsistens, som sikrer den fornødne positions- eller faconstabilitet under varmebehandlingen. Den fugtige stenpartikelmasse kan derefter udtørres 35 til forøgelse af massens stabilitet, før varmehærdningen gennemføres. En stabiliserende effekt vil også kunne opnås DK 167254 B1 6 ved forvarmning af stenpartikelmassen. Stabiliseringen vil da være opnået, når stenpartikelmassen er afkølet. Hærdningstiden vil kunne nedsættes ved tilsætning af accelleratorer til bindemidlet.It has been found desirable that a mold formed from the particulate rock material by a thermosetting binder be heat-cured while the contour-giving exterior of the mold is freely located, or in other words, not held in position or shape by an auxiliary mold part. The use of such an auxiliary mold part would otherwise result in the binder in places where it will flow partly between, and partly over the stone particles, also come into contact with the auxiliary mold so as to form binder pins which can reduce the later desired slip properties of the mold. By appropriately moistening the pebble particle mass by adding liquid, be it water, a solvent or a binder, it will be possible to give the pebble particle mass a consistency which ensures the required position or shape stability during the heat treatment. The moist rock particle mass can then be dried out to increase the stability of the pulp before heat curing is performed. A stabilizing effect can also be obtained by preheating the rock particle mass. The stabilization will then be achieved when the rock particle mass has cooled. The curing time may be reduced by the addition of accelerators to the binder.
5 Det har vist sig, at den konturgivende yderside af forme, der er fremstillet i overensstemmelse med opfindelsen, er særlig nem at renholde, idet den til fremstilling af genstanden fremstillede form før påbegyndelsen af afsætningsprocessen eller overføringsprocessen i rensningsøjemed ud-10 sættes for en formens passager for luftformigt medium gen-nemstrømmende luftstrøm. Yderligere rensningsforanstaltninger skulle stort set ikke være nødvendige, hvilket ligeledes bidrager til en forenkling og billiggørelse af den samlede produktionsproces.It has been found that the contouring exterior of molds made in accordance with the invention is particularly easy to clean, exposing the mold made to the article prior to the commencement of the deposition process or transfer process for purification purposes. passageways for gaseous medium flowing air flow. Further purification measures were virtually unnecessary, which also contributes to simplification and lowering of the overall production process.
15 En i overensstemmelse med opfindelsen anvendt form kan endvidere fremstilles på en sådan måde, at den efter endt brug, eller i tilfælde af udslidning kan regenereres, idet formens partikelformede byggemateriale genbruges.Furthermore, a mold used in accordance with the invention can be manufactured in such a way that after use, or in the event of wear, it can be regenerated, reusing the mold's particulate building material.
Claims (8)
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK408888A DK167254B1 (en) | 1988-07-21 | 1988-07-21 | PROCEDURE FOR THE PREPARATION OF FORMED ARTICLES OF A FLUIDIZED CELLULOSE FIBER MATERIAL |
| DK592188A DK592188A (en) | 1988-07-21 | 1988-10-25 | MANUFACTURE OF FORMED ARTICLES OF PLASTIC |
| PT9122389A PT91223B (en) | 1988-07-21 | 1989-07-19 | MOLD AND MOLDING PROCESS OF OBJECTS FROM FLUIDIFIED MATERIAL |
| AU40332/89A AU4033289A (en) | 1988-07-21 | 1989-07-20 | Mould and method for the production of moulded objects from a fluidized material |
| BR898903603A BR8903603A (en) | 1988-07-21 | 1989-07-20 | MOLD AND PROCESS FOR THE MANUFACTURE OF MOLDED OBJECTS FROM A WATER SUSPENSION OF A FIBROUS MATERIAL |
| CH110090A CH679559A5 (en) | 1988-07-21 | 1989-07-20 | |
| MX1687089A MX171468B (en) | 1988-07-21 | 1989-07-20 | MOLD AND METHOD FOR THE PRODUCTION OF MOLDED OBJECTS FROM A FLUIDIFIED MATERIAL |
| PCT/DK1989/000180 WO1990000944A1 (en) | 1988-07-21 | 1989-07-20 | Mould and method for the production of moulded objects from a fluidized material |
| GR890100465A GR1001014B (en) | 1988-07-21 | 1989-07-21 | Moulding and method for producing moulded objects |
| ES8902585A ES2016484A6 (en) | 1988-07-21 | 1989-07-21 | Mould and method for the production of moulded objects from a fluidized material |
| CN 89106071 CN1040409A (en) | 1988-07-21 | 1989-07-21 | Method and mould with production of moulded objects from fluidized material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK408888A DK167254B1 (en) | 1988-07-21 | 1988-07-21 | PROCEDURE FOR THE PREPARATION OF FORMED ARTICLES OF A FLUIDIZED CELLULOSE FIBER MATERIAL |
| DK408888 | 1988-07-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK408888D0 DK408888D0 (en) | 1988-07-21 |
| DK408888A DK408888A (en) | 1990-01-22 |
| DK167254B1 true DK167254B1 (en) | 1993-09-27 |
Family
ID=8130068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK408888A DK167254B1 (en) | 1988-07-21 | 1988-07-21 | PROCEDURE FOR THE PREPARATION OF FORMED ARTICLES OF A FLUIDIZED CELLULOSE FIBER MATERIAL |
Country Status (10)
| Country | Link |
|---|---|
| CN (1) | CN1040409A (en) |
| AU (1) | AU4033289A (en) |
| BR (1) | BR8903603A (en) |
| CH (1) | CH679559A5 (en) |
| DK (1) | DK167254B1 (en) |
| ES (1) | ES2016484A6 (en) |
| GR (1) | GR1001014B (en) |
| MX (1) | MX171468B (en) |
| PT (1) | PT91223B (en) |
| WO (1) | WO1990000944A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995029295A1 (en) * | 1994-04-27 | 1995-11-02 | Brødrene Hartmann A/S | Suction mould for making papier-mache objects, and method of making such a mould |
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|---|---|---|---|---|
| JP2836801B2 (en) * | 1992-03-06 | 1998-12-14 | 日本碍子株式会社 | Papermaking mold, papermaking method and papermaking apparatus for fiber molded product, and paper made fiber molded product |
| JP2836800B2 (en) * | 1992-03-06 | 1998-12-14 | 日本碍子株式会社 | Papermaking mold, papermaking method and papermaking apparatus for fiber molded product, and paper made fiber molded product |
| US7008765B1 (en) | 1997-04-10 | 2006-03-07 | The Johns Hopkins University | PCA3, PCA3 genes, and methods of use |
| GB2331040A (en) * | 1997-11-05 | 1999-05-12 | Universal Pulp Packaging Ltd | Porous mould for forming fibre products |
| PT1222266E (en) | 1999-09-29 | 2006-07-31 | Diagnocure Inc | PCA3 MESSENGER RNA IN BENEFICIAL AND MALIGNAL PROSTATE TISSUES |
| CN1623022A (en) * | 2002-02-26 | 2005-06-01 | 绿谷科技有限公司 | Improved molded fiber manufacturing |
| ES2427853T3 (en) | 2003-02-07 | 2013-11-04 | Diagnocure Inc. | Procedure to detect prostate cancer in a sample |
| CA2491067A1 (en) | 2004-12-24 | 2006-06-24 | Stichting Katholieke Universiteit | Mrna rations in urinary sediments and/or urine as a prognostic marker for prostate cancer |
| CN105908578A (en) * | 2016-05-03 | 2016-08-31 | 东莞当纳利印刷有限公司 | Production method of paper pulp molded product |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE227276C1 (en) * | 1969-09-23 | |||
| DE435196C (en) * | 1922-10-03 | 1926-10-14 | Josef Franz Kuehnel | Form made of ceramic porous mass |
| CH186280A (en) * | 1934-11-29 | 1936-09-15 | Limited Papercrete | Process for making articles of paper pulp and apparatus for carrying out this process. |
| DE900261C (en) * | 1944-07-04 | 1953-12-21 | Schiess Ag | Molding process |
| FR925073A (en) * | 1946-03-20 | 1947-08-25 | Shell for molding and its manufacturing process | |
| DE1504261A1 (en) * | 1964-11-17 | 1969-09-25 | Farrell James A | Porous solid body and method of shaping the same |
| DE1909855A1 (en) * | 1969-02-27 | 1970-11-26 | Daimler Benz Ag | Transfer method for road surface pattern - to tes tracks |
| FR2489738A1 (en) * | 1980-09-11 | 1982-03-12 | Isobox Sa | NEW MOLDS DESIGNED FOR THE MANUFACTURE OF EXPANDED, NON-POLAR PLASTIC MATERIALS USING ULTRA-HIGH FREQUENCY RADIATION |
| MX161282A (en) * | 1983-04-09 | 1990-08-28 | Sintokogio Ltd | FORMING, COMPOSITE AND DURABLE MODEL TO MANUFACTURE THREE-DIMENSIONAL PRODUCTS |
| JPS62128711A (en) * | 1985-11-30 | 1987-06-11 | Kojima Press Co Ltd | Molding tool having permeability |
-
1988
- 1988-07-21 DK DK408888A patent/DK167254B1/en not_active IP Right Cessation
-
1989
- 1989-07-19 PT PT9122389A patent/PT91223B/en not_active IP Right Cessation
- 1989-07-20 MX MX1687089A patent/MX171468B/en unknown
- 1989-07-20 CH CH110090A patent/CH679559A5/de not_active IP Right Cessation
- 1989-07-20 BR BR898903603A patent/BR8903603A/en not_active Application Discontinuation
- 1989-07-20 WO PCT/DK1989/000180 patent/WO1990000944A1/en not_active Application Discontinuation
- 1989-07-20 AU AU40332/89A patent/AU4033289A/en not_active Abandoned
- 1989-07-21 CN CN 89106071 patent/CN1040409A/en active Pending
- 1989-07-21 ES ES8902585A patent/ES2016484A6/en not_active Expired - Lifetime
- 1989-07-21 GR GR890100465A patent/GR1001014B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995029295A1 (en) * | 1994-04-27 | 1995-11-02 | Brødrene Hartmann A/S | Suction mould for making papier-mache objects, and method of making such a mould |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4033289A (en) | 1990-02-19 |
| WO1990000944A1 (en) | 1990-02-08 |
| DK408888D0 (en) | 1988-07-21 |
| ES2016484A6 (en) | 1990-11-01 |
| PT91223B (en) | 1996-05-31 |
| GR1001014B (en) | 1993-03-31 |
| GR890100465A (en) | 1991-12-10 |
| PT91223A (en) | 1990-02-08 |
| CN1040409A (en) | 1990-03-14 |
| BR8903603A (en) | 1990-10-02 |
| DK408888A (en) | 1990-01-22 |
| CH679559A5 (en) | 1992-03-13 |
| MX171468B (en) | 1993-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |