CN1040409A - Method and mould with production of moulded objects from fluidized material - Google Patents
Method and mould with production of moulded objects from fluidized material Download PDFInfo
- Publication number
- CN1040409A CN1040409A CN 89106071 CN89106071A CN1040409A CN 1040409 A CN1040409 A CN 1040409A CN 89106071 CN89106071 CN 89106071 CN 89106071 A CN89106071 A CN 89106071A CN 1040409 A CN1040409 A CN 1040409A
- Authority
- CN
- China
- Prior art keywords
- mould
- profile
- binding agent
- make
- grain
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Use fibre material particularly in the water of fibre pulp suspension make the method for molded article, be that this material is formed outside deposition one deck of part and forms at the profile of mould; This mould is breathed freely, and vacuumizes so that see through mould; First mfg. moulding die before aforesaid operations, in the mould at least its profile to form part be by building stones grain bonding and make, have the exterior contour of dimensionally stable after the bonding, and can make air pass to the mould outside; Can carry out depositing operation after making mould.
Description
The present invention relates to make molded article by fluidized material.
The connotation of fluidized material is the fibrous hygrometric state initiation material that is suitable for making the object that requires herein.The initiation material of hygrometric state for example can be a kind of be used to the make paper disc of packing fragile goods or fibre pulp material of carton.Described rapid wear object such as fruit, flowers, egg, glassware.This paper pulp material normally is made up of the cellulose fibre that suspends.
In all these modes of production, normally with large-scale continuous production series of products in enormous quantities.For this purpose, the production technology that people have known is to utilize deposition process that starting material is deposited on the mould outside that constitutes the object profile, and this mould can make the gas working dielectric of belongings material see through the material of mould.For for the pulp production object, be to use the mould that processes by bronze that has the woven webs coating, and this net is to be made by stainless steel, in order to limit the shape profile of product.Based on above each point, details are as follows in the present invention:
On this bronze mould the passage that penetrates is arranged, with causing even distribution so that the vacuum draw on the whole shaped profile outside the mould reaches.By means of the effect of described vacuum, by the fluidized material deposition and reach desired coating thickness, for example reach by means of this mould being immersed among the paper pulp material in the outside of mould.When mould is promoted from paper pulp come out after, can continue to vacuumize, make to be deposited on one deck material on the mould by preliminarily dried.In those passages, change blowing compressed air into then, moulded parts still moist on the mould is removed down.
This conventional method is because time-consuming, and needs use the expensive material mfg. moulding die, so the production time is long, and the cost height.Therefore this classical production process usually is unsuitable for producing cheap and small quantities of product.
The purpose of this invention is to provide a kind of method and apparatus, under the condition that keeps the advantage of deposition process own, make on the one hand and shorten living total time (from making this mould calculating, till making to target product), simultaneously die manufacturing cost can be reduced, thereby small lot batch manufacture and/or special mold product can be used in.
For reaching this purpose, the present invention had both related to a kind of mould, also related to the method for being made moulded parts by fluidized material.
By the present invention, described mould is characterised in that the part of the formation profile of this mould is made by a kind of graininess building stones at least, provide stable outer contour by the building stones particle, simultaneously get together to limit and pass outside profile that this mold materials passes to mould forms partly, and be connected to the open channel of the suction source that is used to remove fluidization liquid by described particle.
Such mould can be by cheap inorganic matter raw material for example with sand and adopt simple manufacturing technology to make with the short time, therefore compare with existing above-mentioned deposition mould method for making, the time is short, cost is low.
The building stones of described mould can be made up of varigrained particle, can form part at the profile of this casting mould and use small grain size, and Di Xia supporting layer is used than coarsegrain in this section.Adopt this mode, it is all right that air is passed through, and makes the mold outer surface smoother, also can make product that uniform outer surface be arranged by made product requirements.
Adopt plain mode to make mould have the required intensity of production process, be about to the stone grain and mix, and adopt heat treatment to make the made mould sclerosis of this mixture with the suitable binding agent that can contain adhesion promoter.Can also between the stone grain, adopt wedge embedding mode, make mould have intensity.
The suitable structure of described mould is to make mold bottom that a foundation be arranged, and stone grain wherein connects together by the material of a kind of vacuum fusion, and is to be connected together by a kind of sclerosis binder in other parts of mould.The feature of this kind mould is to have good intensity, and can be to being subjected to quite big operating pressure, as the pressure from water vapour.
The scope of the invention comprises that also making and using a kind of mould, this mould is with a kind of binding agent gravel material to be bonded to together, and its intensity reaches the post processing pressure processing that makes mould can be used for molded article.
By method of the present invention is before outside deposition one deck fluidized material of the formation profile of the mould that can see through gaseous working medium, make the mould of the above-mentioned feature of a kind of tool earlier, and the profile of this mould forms partly and is formed by the gravel material at least, and its particle is to be bonded to together to open and stable structure with formation, the air flue that penetrates is arranged, make air pass to the mould outside, on the mould of so making, carry out depositing operation then.With such method, begin from mfg. moulding die that whole manufacturing process can shorten greatly till make product, because no longer need to make expensive metal die here.Because the energy shortening time is also used cheap molding jig material, just might be applied in above-mentioned deposition technique economically small lot batch manufacture and/or produce special mold spare.
Form wedge embedding situation to each other if use the gravel material of certain granularity and shape in order to bond purpose and can make, just can save to the small part binding agent.
By another embodiment of the present invention, be before applying gaseous working medium, to use to have to trend towards the long-pending capillary binding agent of its minimal surface the gravel material grain is bonded to together.By means of the method, this binding agent (for example by means of heating) condense upon the mfg. moulding die material granule around, thereby can avoid intergranular air flue blocked because just particle mutually directly the position of contact just bond.From this respect, use the particle of rounded shape to suit by the present invention.
Also show thus, selected by granularity and size distribution to pellet, can check and control desired mould porosity, bonding reached favourable situation between particle thereby both can make, also can make its hole have suitable size, excessive to prevent that material from too closely fall pressure.
By the present invention, the gravel material grain can be made it mutual bonding with a kind of binding agent that stays smooth outer surface after particle bond before applying gaseous medium.So just can keep suitable skin resistance, and form on the surface, because the above-mentioned surface tension effect of used binding agent causes its outer surface at first glance seemingly coarse at profile.
The gravel material grain can be bonded to together with a kind of thermmohardening type binding agent before applying gaseous medium.The advantage of doing like this is that profile that the mould after the sclerosis can and be prepared molding die forms between the mould on surface good slippage effect is arranged.In addition, the mould of making can reach such degree of heat stability, and making has the very big free degree when clearing up mould with hot method.
According to the present invention, can use a kind of thermmohardening type binding agent that contains the liquefiable smoothing preparation.Then, for example available wax of this mould, oil or polytetrafluoroethylene (PTFE) are handled.This liquefiable smoothing preparation can balance out by fluidized material (for example fiber) in formed undesirable sinking of outer surface or depression points.In addition, the liquefiable smoothing preparation should be able to play the effect of hole on the cleaning mold when being heated and aspirate.
By the present invention, the gravel material grain can utilize before beginning to apply gaseous working medium and a kind ofly manifest the binding agent of promoting cementing property before the last bonding of particle it is bonded together.Can make the profile of mould form part like this is easy to make shape should be arranged.
The example of thermmohardening type binding agent is a phenolic resins, and for example can adopt silane and obtain desired enhancement sticking property.
Above-mentioned method can be used for producing part next life by different starting material in practicality with mould, for example uses fibrous suspension, and can exist to adopt and realize all supplies that bonding is required on the mould in the made one deck material of suction method.
For example in the occasion of using fibrous suspension, owing to mould can be made essential intensity by the inventive method, so can adopt known way to utilize a kind of gaseous working medium to the profile formation part of major general's mould to be connected to vacuum pick-up system, deposit fluidised material thereby form part at this profile.
As described in this paper beginning, utilizing gaseous working medium to form the outside deposition fluidized material of part and after forming product, remove down that the implementation method of this product is to send into compressed air by the gas passage of mould at the profile of mould, thereby with product and mould disengagement.In force, at this moment product may be still very soft, and in order to remove product down from mold, usually use a transfer mold, this transfer mold is that the outside face of the product outside forming partly with above-mentioned profile is suitable, so that remove this product down from this outside, then this product is placed on the conveyer belt, again product is sent to drying chamber.This transfer shifting formwork tool also is that metal is made up to now, for example makes with bronze.
Also comprise within the scope of the present invention and use above-mentioned gravel material grain to make this kind transfer mold, also soon the material grain is bonded to together and forms the stable knot thing of opening, and makes air can have path to pass to outside the mould, and institute's molding jig can be connected with vacuum system.
That is to say that compare with cost with making the known used time of transfer mold, it is easy to make the used production technology of this transfer mold by the present invention, need with the time weak point, and cheap.This transfer mold can directly be made based on product made on this casting die, promptly on this product, make first an auxiliary former (for example using gypsum) that matches with that face of product earlier away from casting die, utilize this first auxiliary former to make (for example also using gypsum) second auxiliary formpiston thereon then, on this second auxiliary formpiston, directly make transfer mold then.
Experience shows that suitable mode is to use gravel material grain and thermmohardening type binding agent to make this mould, makes the outside of the profile formation part of mould remain the scope of freedom simultaneously, in other words, promptly is not to come holding position or shape by the auxiliary mould parts.If use this auxiliary mould parts that binding agent is contacted with the auxiliary mould at this place, make binding agent part stream between the gravel material grain, a part flows on the gravel material grain, thereby produces the binding agent protruding point, so can make desired mould slippage decreased performance.If by adding liquid, it is suitably wetting with the gravel grain promptly to add entry or a kind of solvent or binding agent, can guarantee essential position or shape stability therefrom in heat treatment process so that gravel material has enough viscosityes in advance.Shi gravel material grain can be before thermmohardening first drying, to increase the stability of material.The preheating of gravel material grain also can be obtained stablizing effect.After the cooling of gravel material grain, can reach stablizing effect.Can in binding agent, add promoter and shorten firm time.
Experience shows that the outer surface that forms part by the mold profile that the present invention made keeps clean especially easily, because the mould that is used to produce this product was the airway on the free air-flow flow through molds earlier before beginning deposition or transfer tasks.From generally speaking,, also play the effect of simplifying and reducing cost for whole process of production like this with the cleaning measure that does not need to add.
Also can be with this sample loading mode manufacturing by the used mould of the present invention, promptly finish using or heavy wear after can regenerate because the bulk material of molding jig can Recycling.
Claims (14)
1, a kind of be used for from fibrous material particularly the water suspension of paper pulp make the mould of moulded parts, this mould can be breathed freely when vacuumizing so that the profile that makes the product material be deposited on this mould forms the outer surface of part, described mould is characterised in that the profile formation part of this mould is made by a kind of building stones particle at least, and provide the exterior contour of dimensionally stable by these stone grains, described stone grain is brought together also to play simultaneously to limit and leads to the effect that its profile forms the gas passage of part outer surface in this mould, and is connected in order to remove the vacuum suction source of fluidization liquid.
2, by the mould of claim 1, it is characterized in that being coated with a layer binder on the described building stones particle.
3, by the mould of claim 2, it is characterized in that described binding agent is the thermmohardening type.
4, by the mould of claim 2, it is characterized in that containing in the described binding agent a kind of adhesion promoter.
5, by each mould among the claim 1-4, it is characterized in that described building stones particle has the profile of rounding.
6, by each mould among the claim 1-5, it is characterized in that described building stones particle is that the wedge embedding links to each other each other.
7,, it is characterized in that described gravel material particle can bear thereafter product pressure processing being bonded to intensity that back together possessed by each mould among the claim 1-6.
8, a kind of manufacture method of mould, described mould is used for from a kind of fluidized material, particularly fibre material by deposition process and the outer surface that the profile of this mould forms part form one material bed, and this mould is breathed freely, so that gaseous working medium can see through the material of mould and work to this fibre material, the method is characterized in that, earlier by each makes a kind of mould among the claim 1-7, and it is to be bonded to together by a kind of gravel material grain that this mould forms part at profile at least, open and the profile stable structure thereby become, and the through air duct that leads to mold outer surface is arranged, these passages are connected to the vacuum source that suspension liquid is removed in suction, carry out depositing operation then on the mould that so constitutes.
9, by the method for claim 8, it is characterized in that described gravel material grain was bonded to together with a kind of binding agent before beginning to be subjected to the gaseous state operation medium, this binding agent has and trends towards becoming the surface tension that minimal surface amasss.
10, by the method for claim 8 or 9, it is characterized in that described gravel material grain was bonded to together with a kind of binding agent before beginning to be subjected to the gaseous working medium effect, this binding agent stays smooth free outer surface after making particle bond.
11, by the method for claim 10, it is characterized in that using a kind of thermmohardening type binding agent that contains the liquefiable smoothing preparation.
By each method among the claim 8-11, it is characterized in that 12,, before beginning is by the gaseous working medium effect, be bonded to together that this binding agent promptly showed to adhere to and promotes character before making the last bonding of material grain by means of a kind of binding agent.
13, by each makes the method for molded article among the claim 8-12 from a kind of fluidized material, in by claim 8-12 each method by claim 1-7 in each described profile at this mould form part outside deposition one deck material and after forming this molded article, utilize a transfer mold that it is removed down from mould, the design of this transfer mold is to match with the side away from described profile formation outer surface partly of this molded article, be used for removing this molded article down from this outer surface, it is characterized in that, this transfer mold is before removing following this molded article, by each is described and make among the claim 1-12, and be connected to a vacuum suction source.
14, by each method among the claim 11-13, after it is characterized in that utilizing a kind of thermo-hardening binder to make mould by the gravel material grain, before beginning to be subjected to the gaseous working medium effect, it, keep the profile of mould to form the outer surface of part simultaneously in the Free Surface situation with it heat hardening.
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 |
| DK4088/88 | 1988-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1040409A true CN1040409A (en) | 1990-03-14 |
Family
ID=8130068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106071 Pending CN1040409A (en) | 1988-07-21 | 1989-07-21 | Method and mould with production of moulded objects from fluidized 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 |
|---|---|---|---|---|
| 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 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| DK0757733T3 (en) * | 1994-04-27 | 1998-05-25 | Hartmann As Brdr | Suction mold for making papermachine blanks and method for making such mold |
| 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 |
| DK1222266T3 (en) | 1999-09-29 | 2006-07-10 | Diagnocure Inc | PCA3 messenger RNA in benign and malignant prostate tissue |
| US20050150624A1 (en) * | 2002-02-26 | 2005-07-14 | Toh Peng S. | Molded fiber manufacturing |
| AU2004209578A1 (en) | 2003-02-07 | 2004-08-19 | Diagnocure Inc. | Method 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 |
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 |
| CA1266159A (en) * | 1983-04-09 | 1990-02-27 | Takeo Nakagawa | Composite and durable forming model with permeability |
| 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 BR BR898903603A patent/BR8903603A/en not_active Application Discontinuation
- 1989-07-20 CH CH110090A patent/CH679559A5/de not_active IP Right Cessation
- 1989-07-20 MX MX1687089A patent/MX171468B/en unknown
- 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 ES ES8902585A patent/ES2016484A6/en not_active Expired - Lifetime
- 1989-07-21 GR GR890100465A patent/GR1001014B/en unknown
- 1989-07-21 CN CN 89106071 patent/CN1040409A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| PT91223B (en) | 1996-05-31 |
| MX171468B (en) | 1993-10-28 |
| GR1001014B (en) | 1993-03-31 |
| GR890100465A (en) | 1991-12-10 |
| BR8903603A (en) | 1990-10-02 |
| DK408888D0 (en) | 1988-07-21 |
| CH679559A5 (en) | 1992-03-13 |
| DK408888A (en) | 1990-01-22 |
| AU4033289A (en) | 1990-02-19 |
| ES2016484A6 (en) | 1990-11-01 |
| DK167254B1 (en) | 1993-09-27 |
| PT91223A (en) | 1990-02-08 |
| WO1990000944A1 (en) | 1990-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |