GB2030507A - Casting articles - Google Patents
Casting articles Download PDFInfo
- Publication number
- GB2030507A GB2030507A GB7926966A GB7926966A GB2030507A GB 2030507 A GB2030507 A GB 2030507A GB 7926966 A GB7926966 A GB 7926966A GB 7926966 A GB7926966 A GB 7926966A GB 2030507 A GB2030507 A GB 2030507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- binding agent
- drum
- wetting
- brush
- elementary
- 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.)
- Withdrawn
Links
- 238000005266 casting Methods 0.000 title 1
- 239000011230 binding agent Substances 0.000 claims abstract description 34
- 238000009736 wetting Methods 0.000 claims abstract description 29
- 238000005056 compaction Methods 0.000 claims abstract description 12
- 239000011505 plaster Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000001175 calcium sulphate Substances 0.000 description 2
- 235000011132 calcium sulphate Nutrition 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
-
- 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
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0092—Machines or methods for applying the material to surfaces to form a permanent layer thereon to webs, sheets or the like, e.g. of paper, cardboard
-
- 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
- B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
- B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
- B28B5/026—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length
- B28B5/027—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length the moulding surfaces being of the indefinite length type, e.g. belts, and being continuously fed
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
- G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
- G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
- G01F11/24—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for fluent solid material
-
- 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
- B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
- B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying
- B28B7/465—Applying setting liquid to dry mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
- C04B2111/0062—Gypsum-paper board like materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Pens And Brushes (AREA)
Abstract
An element made of hardenable binding agent, such as plaster, with water is obtained by successive elementary deposits of the dry binding agent in powder form, each elementary deposit being followed by a wetting and, after the last wetting, before setting begins, whilst the wet binding agent is still malleable, the element being formed is subjected to a prelamination, then to a compaction. The invention is more particularly applicable to the manufacture of construction elements.
Description
SPECIFICATION
A process and installation for the manufacture of construction elements
The present invention relates to a process and installation for the manufacture of elements, particularly construction elements, such as plates, tiles, etc... made of a hardenable binding agent, such as plaster or the like.
A proposed arrangement comprises a process and an installation in which the element is obtained by successive elementary deposits of the dry binding agent in powder form, each elementary deposit being followed by a wetting. Construction elements are thus obtained at low cost price, due to considerable reductions in the equipment, manpower and energy costs, with respect to the known processes and installations.
However, difficulties arise in the execution of such a process by successive deposits and wettings.
In fact, if an elementary deposit is compacted before wetting, the penetration of the wetting water is only superficial with the result that the element being formed is not uniformly wetted in depth and the mechanical strength of the finished element is low. Inversely, if the elementary deposit is obtained by free sprinkling, the consecutive wetting wets this deposit uniformly in depth, but this elementary deposit is not compacted by the wetting and the mechanical strength of the finished element is again low.
According to an important feature of the present invention, the process for manufacturing an element made of a hardenable binding agent, such as plaster, to which liquid is added, according to which said element is obtained by successive elementary deposits, made by free sprinkling, of the dry binding agent in powder form, each elementary deposit being followed by a wetting, is characterised in that, after the last wetting, before setting begins, whilst the wet binding agent is still malleable, the element being formed is subjected to a pre-lamination, then to a compaction.
The compaction thus gives the finished element a high mechanical strength.
In the case of a sheet of paper or the like being applied by pressure on the upper face of the element being formed, after the last wetting, it is advantageous if the compaction is effected after this application. It is thus possible, at the moment of applying said sheet, to effect the pre-lamination which is completed by said compaction.
For example, if it is desired to obtain a finished element 9 mm thick, it is possible to make a malleable element 13 to 14 mm thick by successive deposits and wettings. At the moment of application of the sheet of paper or the like, the thickness is reduced by pre-lamination to 12 mm, then to 9 mm at the moment of compaction.
The compaction is preferably not effected with the aid of one roller only, but via a lamination device, such as an endless presser belt, extending, in the direction of advance of the element, over a length of between on third of and triple the length of the
finished element. An efficient compaction is thus
obtained.
Furthermore, according to another feature of the
present invention, the strip of plaster may be
rendered workable immediately after it has been
formed.
To this end, the wetting liquid which is generally
water, contains a solubale alkaline silicate, such as
sodium silicate.
Thus, the soluble alkaline silicate, in the presence
of the calcium of the plaster, provokes a very rapid
setting, enabling the strip to be handled immedi
ately.
Of course, all the wettings, or only certain other, may be effected with water to which a soluble
alkaline silicate is added; in the latter case, the other wettings are made with water alone or with other
additives.
The proportion of soluble alkaline silicate in the wetting liquid may vary as a function of the quality of the plaster used and the desired rapidity of setting for the strip of plaster. However, under normal conditions, it has proved to be advantageous to use a quantity of sodium silicate of between 5 and 20 parts by volume for 100 parts of plaster.
It will furthermore be noted that the presence of silicate in the products obtained increases, for example, the duration of fire-resistance thereof. This increase in the duration of resistance may be about double that of products made of plaster not containing silicate.
Moreover, the presence of a complex of calcium and sodium silicate in the calcium sulphate (the ions of the calcium of the silicate coming from the calcium sulphate of the plaster) gives the products according to the invention a water-resistance greater than that of the known products.
A proposed arrangement describes, for carrying out the process, an installation comprising a conveyor animated by a advance movement on which is formed a continuous strip, subsequently cut into elements and characterised in that a plurality of dispensers of dry binding agent in power form and of wetting devices distributed in pairs are arranged above said conveyor, each pair comprising a dispenser of dry binding agent in powder form and a wetting device placed just downstream of said dispenser.
In such an installation, each dispenser of dry binding agent in powderform extends transversely with respect to the conveyor and may comprise a doser, for example rotary and/or vibrated doser, to regulate the flow of binding agent, whilst each wetting device may be constituted by at least one wetting ramp transverse with respect to said conveyor.
Such a dispenser generally comprises a recipient for said dry binding agent, provided with a dispensing slot in which a rotary drum provided with longitudinal grooves is arranged. Thus, the drum takes the dry binding agent from inside the recipient via its grooves and dispenses it to the outside, sprinkling it on the conveyor. The dosage of dry binding agent is therefore made by regulating the rotation of the drum.
However the dry binding agent frequently clogs the grooves of the drum, this totally falsifying the dosage of dry binding agent.
To remedy this drawback, it has already been thoughtto use flat longitudinal brushes, which are fixed or movable, parallel to the axis of the drum and of which the end of the bristles abuts on the part of the said drum outside the recipient.
However, such an arrangement is in practice inefficient and does not allow the installation to function correctly.
In order to avoid this drawback, the installation which comprises on the one hand a conveyor animated by an advance movement on which a continuous strip is formed, by successive elementary deposits of a dry binding agent in powder form, each elementary deposit being followed by a wetting, said continuous strip being subsequently cut up into elements and, on the other hand, arranged above said conveyor, a plurality of dispensers of dry binding agent in powder form and of wetting devices, a dispenser of dry binding agent comprising a rotating drum provided with longitudinal grooves taking the dry binding agent from inside a recipient to dispense it outside same, whilst a brush device, associated with each dispenser, is arranged so that the free end of the bristles of this brush device abuts on the part of the drum outside said recipient, is characterised in that said brush device comprises at least one brush of which height, measured in a plane transverse with respect to the drum, extends over a plurality of consecutive grooves thereof, said brush device being animated by a reciprocating movement in a general direction parallel to the axis of said drum.
The device according to the invention may comprise only one brush whose length is similar to that of the drum. However, it is advantageous, particularly for maintenance reasons, if the device comprises a plurality of such brushes of limited width, spaced apart from one another and connected to one another, the amplitude of the reciprocating movement of said brushes being such that the zones of the drum swept by two adjacent brushes overlap at least partially.
Furthermore, it has been observed that it was advantageous if the movement of each brush follows a path of reciprocating translation in a plane, in an arc of ellipse, arc of circle etc... so that, at the ends of said path, the brush is not in contact with the drum, whilst in the median part of the path the brush is in contact with said drum. Thus, a very efficient reciprocating brushing movement is obtained.
The invention will be more readily understood on reading the following description with reference to the accompanying drawings, in which:
Figure l is a schematic view in section of the lower part of a dispenser of dry binding agent.
Figure 2 is a plan view of Figure 1, in the direction of arrow F, the hopper being assumed to have been removed.
Referring now to the drawings, Figures 1 and 2 show the dispenser of dry binding agent which comprises a hopper 1, containing the dry binding agent 2 and comprising in its lower part an opening 3 inside which a rotating drum 4 is arranged.
A plurality of longitudinal grooves 5 are provided on this drum, said grooves taking the binder agent 2 from the hopper 1,to dispenses it beneath the drum 4.
In accordance with the invention, to prevent clogging of the grooves 5 by the binding agent 2, an arrangement of brushes 6 provided with tufts of bristles 7 and connected to one another by a manoeuvring rod 8, is provided.
Each brush 6 is such that its heights measured in a plane transverse with respect to the drum 4, extends over a plurality of consecutive grooves 5 of said drum. Furthermore, the width, measured along the axis 9 of the drum 4, of each brush 6 is limited and the manoeuvring rod 8 is animated, by a mechanism (not shown), by a reciprocating movement of translation along a path 10, in the form of an arc of circle, arc of ellipse or the like, so that, at the ends of said path, each brush is not in contact with the drum whilst in the median part of the path the brush is in contact with said drum.
The amplitude of the path 10, measured along the axis 9, is such that the zones of the drum 4 swept by two adjacent brushes overlap at least partially.
Due to this device according to the invention, the dispensing grooves 5 are irreproachably cleaned, the result being that the dosage of the binding agent 2 in powder form may be particularly precise, by regulating the speed of rotation of the drum 4.
Furthermore, possibly to fight the tendency of the wetting liquid to collect in the lower elementary deposits, which may cause the drying of the upper elementary deposits (which do not set due to lack of water), whilst the lower or intermediate elementary deposits remain too wet (and therefore have no mechanical strength), it may be advantageous to wet the lower deposits with a smaller quantity of liquid than that theoretically necessary, whilst the upper deposits are wetted with a quantity of water greater than that theoretically necessary. In this case, only the intermediate deposits may be wetted with the theoretical quantity of liquid.
Claims (9)
1. A process for manufacturing an element made of hardenable binding agent such as plaster, to which a liquid is added, according to which said element is obtained by successive elementary deposits of the dry binding agent in powder form, each elementary deposit being followed by a wetting, wherein, after the last wetting, before setting begins, whilst the wet binding agent is still malleable, the element being formed is subjected to a prelamination, then to a compaction.
2. A process as claimed in Claim 1, in which, after the last wetting, a sheet of paper or the like is applied by pressure on the upper face of the element being formed, wherein the compaction is effected after this application.
3. A process as claimed in Claim 2, wherein, at the moment of applying said sheet, the prelamination is effected, which is completed by said compaction.
4. A process as claimed in any one of Claims 1 to 3, wherein the compaction is effected by means of a device extending in the direction of advance of the element, over a length of between one third of and triple the length of the finished element.
5. A process as claimed in any one of Claims 1 to 4, wherein the liquid used for for at least one of said wetting contains a soluble alkaline silicate in a sufficient quantity to accelerate the setting of the strip of wet binding agent.
6. A process as claimed in any one of Claims 1 to 4, wherein the lower elementary deposits are wetted with a smaller quantity of liquid than that theoretically necessary, whilst the upper deposits are wetted with a quantity of liquid greater than that theoretically necessary.
7. An installation comprising, on the one hand, a conveyor animated by an advance movement on which a continuous strip is formed by successive elementary deposits of a dry binding agent in powder form, each elementary deposit being followed by a wetting, said strip subsequently being cut up into a plurality of dispensers of dry binding agent in powder form and of wetting devices, a dispenser of dry binding agent comprising a rotating drum provided with longitudinal grooves taking the dry binding agentfrom inside a recipient to dispense it outside same, whilst a brush device associated with each dispenser is arranged so that the free end of the bristles of said brush device abuts on the part of said drum outside said recipient, wherein said brush device comprises at least one brush of which the height, measured in a plane transverse with respect to the drum, extends over a plurality of consecutive grooves thereof, said brush device being animated by a reciprocating movement in a general direction parallel to the axis of said drum.
8. An installation as claimed in Claim 7, wherein the device comprises a plurality of such brushes of limited width, spaced apart from one another and connected to one another, the amplitude of the reciprocating movement of said brushes being such that the zones of the drum swept by two adjacent brushes overlap at least partially.
9. An installation as claimed in either one of
Claims 7 or 8, wherein the movement of each brush follows a path of reciprocating translation in a plane, so that, at the ends of said path, the brush is not in contact with the drum, whilst in the median part of the path the brush is in contact with said drum.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7827337A FR2436759A1 (en) | 1978-09-25 | 1978-09-25 | Forming plaster board or similar material - by applying successive layers of dry binder, spraying with liquid, preforming and compacting |
| FR7832966A FR2442120A1 (en) | 1978-11-22 | 1978-11-22 | Forming plaster board or similar material - by applying successive layers of dry binder, spraying with liquid, preforming and compacting |
| FR7834926A FR2443910A1 (en) | 1978-12-12 | 1978-12-12 | Forming plaster board or similar material - by applying successive layers of dry binder, spraying with liquid, preforming and compacting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2030507A true GB2030507A (en) | 1980-04-10 |
Family
ID=27250855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7926966A Withdrawn GB2030507A (en) | 1978-09-25 | 1979-08-02 | Casting articles |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2937357A1 (en) |
| GB (1) | GB2030507A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2583377A1 (en) * | 1985-06-14 | 1986-12-19 | Colgate Palmolive Co | Metering device for discontinuous distribution of powder |
| WO1991012218A1 (en) * | 1990-02-09 | 1991-08-22 | Pioneer Supamix Limited | Composition for covering a substrate |
| US20180266868A1 (en) * | 2017-03-14 | 2018-09-20 | Daneme Holding B.V. | Dispensing device for powders |
| WO2019197088A1 (en) * | 2018-04-10 | 2019-10-17 | Progress Maschinen & Automation Ag | Device for producing at least one three-dimensional component for the construction industry |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29702384U1 (en) * | 1997-02-12 | 1998-06-10 | Rappenhöner, Hans Richard, 51789 Lindlar | Rotary piston dispenser |
-
1979
- 1979-08-02 GB GB7926966A patent/GB2030507A/en not_active Withdrawn
- 1979-09-13 DE DE19792937357 patent/DE2937357A1/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2583377A1 (en) * | 1985-06-14 | 1986-12-19 | Colgate Palmolive Co | Metering device for discontinuous distribution of powder |
| WO1991012218A1 (en) * | 1990-02-09 | 1991-08-22 | Pioneer Supamix Limited | Composition for covering a substrate |
| US5338573A (en) * | 1990-02-09 | 1994-08-16 | Derek Davies | Compound for covering a substrate |
| US20180266868A1 (en) * | 2017-03-14 | 2018-09-20 | Daneme Holding B.V. | Dispensing device for powders |
| CN108569484A (en) * | 2017-03-14 | 2018-09-25 | 达尼梅控股有限公司 | Distributor for powder |
| US10533885B2 (en) * | 2017-03-14 | 2020-01-14 | Daneme Holding B.V. | Dispensing device for powders |
| CN108569484B (en) * | 2017-03-14 | 2021-04-30 | 达尼梅控股有限公司 | Dispensing device for powder |
| WO2019197088A1 (en) * | 2018-04-10 | 2019-10-17 | Progress Maschinen & Automation Ag | Device for producing at least one three-dimensional component for the construction industry |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2937357A1 (en) | 1980-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |