FR1242425A - Composition based on a powder mixture (wood powder, straw or other plants or artificial substances) and molding process - Google Patents
Composition based on a powder mixture (wood powder, straw or other plants or artificial substances) and molding process Download PDFInfo
- Publication number
- FR1242425A FR1242425A FR39862A FR69039862A FR1242425A FR 1242425 A FR1242425 A FR 1242425A FR 39862 A FR39862 A FR 39862A FR 69039862 A FR69039862 A FR 69039862A FR 1242425 A FR1242425 A FR 1242425A
- Authority
- FR
- France
- Prior art keywords
- powder
- mold
- composition
- solvent
- molding composition
- 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.)
- Expired
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Description
Composition à base de mélange pulvérulent (poudre de bois, paille ou autres végé
taux ou substances artificielles) et procédé de moulage.Composition based on a powdery mixture (wood powder, straw or other veg
rate or artificial substances) and molding process.
La présente invention concerne une composition et un procédé permettant l'obtention d'objets moulés, à un prix très inférieur à celui des mêmes articles constitués en matières plastiques habituelles. The present invention relates to a composition and a method for obtaining molded articles at a price much lower than that of the same articles made of usual plastics.
Cette composition consiste, à cet effet, en un mélange pulvérulent formé au moins d'une poudre à base de bois, de paille ou de tous autres végé- taux ou substances artificielles ou naturelles, constituant la matière à mouler proprement dite, et d'une poudre qui, sous l'action d'un solvant, permet d'agglomérer la poudre précitée. This composition consists, for this purpose, of a pulverulent mixture formed at least from a powder based on wood, straw or any other vegetable or artificial or natural substances, constituting the material to be molded proper, and of a powder which, under the action of a solvent, makes it possible to agglomerate the aforementioned powder.
La poudre constituant la matière à mouler proprement dite peut, entre autres, provenir de déchets de fabrication: sciure ou copeaux de bois, déchets de papier, de cuir, de liège et autres. The powder constituting the actual molding material can, among other things, come from manufacturing waste: sawdust or wood chips, waste paper, leather, cork and others.
Quant à la poudre qui constitue le liant, elle peut, comme on le conçoit, être de différentes natures et le solvant utilisé dépend de la nature de cette poudre. C'est ainsi que la poudre-liant peut consister, par exemple, en de la gomme arabique, du polystyrène ou d'une colle à base d'uréeformol, le solvant pouvant être de la vapeur d'eau chargée ou non d'un produit tel qu'un acide, ou de la vapeur d'un solvant organique tel qu'un hydrocarbure lourd, ou encore de la vapeur d'un alcool, d'un ester, d'un éther ou tout autre produit. As for the powder which constitutes the binder, it can, as can be seen, be of different natures and the solvent used depends on the nature of this powder. Thus, the powder-binder can consist, for example, of gum arabic, polystyrene or a ureaformol-based glue, the solvent possibly being water vapor charged or not with a product such as an acid, or the vapor of an organic solvent such as a heavy hydrocarbon, or else the vapor of an alcohol, an ester, an ether or any other product.
Au mélange pulvérulent constitué de la matière à mouler proprement dite et du liant peuvent bien entendu être ajoutés tous autres produits, tels que notamment des colorants. To the pulverulent mixture consisting of the actual molding material and of the binder can of course be added any other products, such as in particular dyes.
Bien que divers procédés puissent être envisagés pour mouler un objet au départ de cette composition, un procédé particulièrement simple consiste à introduire dans un moule une certaine quantité de composition de moulage, à l'aide d'un doseur, à comprimer cette composition dans le moule jusqu'à une certaine valeur, à injecter le solvant dans le moule, afin de provoquer la fusion du liant, et à poursuivre la compression jusqu'à une valeur plus élevée, ce qui permet finalement d'obtenir un objet solide dont la forme est déterminée par celle du moule. Although various methods can be envisaged for molding an object starting from this composition, a particularly simple method consists in introducing into a mold a certain quantity of molding composition, using a metering device, in compressing this composition into the mold. mold up to a certain value, to inject the solvent into the mold, in order to cause the fusion of the binder, and to continue the compression up to a higher value, which finally makes it possible to obtain a solid object whose shape is determined by that of the mold.
Ce moule peut éventuellement être chauffé extérieurement à la ~ vapeur, à l'électricité ou par tout autre moyen, ce qui permet d'activer la transformation du liant et est particulièrement ~ indiqué dans le cas des poudres thermodurcissables, telles que celles à base de colle urée-formol par exemple. This mold can optionally be heated externally with ~ steam, electricity or by any other means, which activates the transformation of the binder and is particularly ~ indicated in the case of thermosetting powders, such as those based on urea-formalin glue for example.
De toute façon, l'invention sera bien comprise à l'aide de la description qui va suivre dans le cas de trois exemples de compositions de moulage, donnés à titre indicatif, non limitatif
Exemple 1. - La composition de moulage est formée de:
Bois en poudre, 80 parties;
Gomme arabique en poudre, 20 parties.In any case, the invention will be well understood with the aid of the description which will follow in the case of three examples of molding compositions, given by way of indication, without limitation.
Example 1. - The molding composition is formed from:
Wood powder, 80 parts;
Gum arabic powder, 20 parts.
Cette composition est introduite dans le moule et y est partiellement comprimée. Après cette compression partielle est injectée de la vapeur d'eau qui provoque la fusion de la gomme arabique et donc la liaison de la poudre de bois. Après compression finale et ouverture du moule, on obtient une pièce moulée de prix particulièrement bas. This composition is introduced into the mold and is partially compressed therein. After this partial compression is injected water vapor which causes the fusion of the gum arabic and therefore the binding of the wood powder. After final compression and opening of the mold, a particularly low cost molded part is obtained.
Exemple 2. - La composition de moulage est formée de
Bois en poudre, 80 parties;
Polystyrène en poudre, 20 parties.Example 2. - The molding composition is formed from
Wood powder, 80 parts;
Polystyrene powder, 20 parts.
Le moulage s'effectue suivant le même processus que dans l'exemple 1, mais en utilisant un hydrocarbure lourd comme solvant. The molding is carried out according to the same procedure as in Example 1, but using a heavy hydrocarbon as solvent.
Exemple 3. - La composition de moulage est formée de:
Bois ou pierre en poudre, 80 parties;
Colle à base d'urée-formol, 20 parties.Example 3. - The molding composition is formed from:
Wood or stone powder, 80 parts;
Urea formalin glue, 20 parts.
Le moulage s'effectue encore suivant le même processus, mais en utilisant, comme solvant, de la vapeur d'eau chargée éventuellement d'un acide en solution, à raison de 2 So par rapport à la colle; il est d'ailleurs à remarquer que cet acide peut être mélangé à la composition de moulage. The molding is still carried out according to the same process, but using, as solvent, water vapor possibly charged with an acid in solution, at a rate of 2 So0 relative to the glue; it should also be noted that this acid can be mixed with the molding composition.
Comme il va de soi, l'invention ne se limite pas aux seules compositions non plus qu'aux seuls modes de mise en oeuvre de ce procédé de mou lage qui ont été ci-dessus indiqués à titre d'exemple; elle en embrasse, au eontraire, toutes les variantes. As goes without saying, the invention is not limited to the only compositions nor to the only modes of implementation of this molding process which have been indicated above by way of example; it embraces, on the contrary, all the variants.
RÉSUMÉ
10 Composition de moulage, caractérisée en ce qu'elle consiste en un mélange pulvérulent formé au moins d'une poudre à base de bois, de paille ou de tous autres végétaux ou substances artifi cielles ou naturelles, constituant la matière à mouler proprement dite, et d'une poudre qui, sous L'action d'un solvant, permet d'agglomérer la poudre précitée.ABSTRACT
10 Molding composition, characterized in that it consists of a pulverulent mixture formed at least from a powder based on wood, straw or any other plants or artificial or natural substances, constituting the material to be molded proper, and a powder which, under the action of a solvent, makes it possible to agglomerate the aforementioned powder.
20 Composition de moulage telle que spécifié en 1 , caractérisée par les points suivants pris ensemble ou séparément:
a. La poudre-liant consiste par exemple, en de la gomme arabique, du polystyrène ou d'une coHe à base d'urée-formol;
b. Le solvant est de la vapeur d'eau chargée ou non d'un produit tel qu'un acide, ou de la vapeur d'un solvant organique tel qu'un hydrocarbure lourd, ou encore de la vapeur d'un alcool, d'un ester, d'un éther ou tout autre produit;
c. A la composition de moulage sont ajoutés des colorants.20 Molding composition as specified in 1, characterized by the following points taken together or separately:
at. The powder-binder consists, for example, of gum arabic, polystyrene or a coHe based on urea-formalin;
b. The solvent is water vapor charged or not with a product such as an acid, or the vapor of an organic solvent such as a heavy hydrocarbon, or else the vapor of an alcohol, an ester, an ether or any other product;
vs. Colorants are added to the molding composition.
30 Procédé de moulage utilisant la composition spécifiée en 10 ou en 20, caractérisé en ce qu'il consiste à introduire dans un moule une certaine quantité de composition de moulage, à l'aide d'un doseur, à comprimer cette composition dans le moule jusqu'à une certaine valeur, à injecter le solvant dans le moule, afin de provoquer la fusion du liant, et à poursuivre la compression jusqu'à une valeur plus élevée, ce qui permet finalement d'obtenir un objet solide dont la forme est déterminée par celle du moule. 30 Molding process using the composition specified in 10 or 20, characterized in that it consists in introducing into a mold a certain quantity of molding composition, using a metering device, in compressing this composition in the mold up to a certain value, to inject the solvent into the mold, in order to cause the fusion of the binder, and to continue the compression up to a higher value, which finally makes it possible to obtain a solid object whose shape is determined by that of the mold.
40 A titre de produit industriel nouveau, toute composition de moulage telle que spécifié en 10 ou en 20. 40 As a new industrial product, any molding composition as specified in 10 or 20.
**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.** ATTENTION ** end of DESC field can contain start of CLMS **.
Claims (3)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR39862A FR1242425A (en) | 1959-10-30 | 1959-10-30 | Composition based on a powder mixture (wood powder, straw or other plants or artificial substances) and molding process |
| FR40431A FR77808E (en) | 1959-10-30 | 1960-05-12 | Composition based on a powder mixture (wood powder, straw or other plants or artificial substances) and molding process |
| LU39335D LU39335A1 (en) | 1959-10-30 | 1960-10-25 | |
| FR41729A FR91351E (en) | 1959-10-30 | 1961-07-10 | Composition and molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR39862A FR1242425A (en) | 1959-10-30 | 1959-10-30 | Composition based on a powder mixture (wood powder, straw or other plants or artificial substances) and molding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1242425A true FR1242425A (en) | 1960-08-22 |
Family
ID=53190064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR39862A Expired FR1242425A (en) | 1959-10-30 | 1959-10-30 | Composition based on a powder mixture (wood powder, straw or other plants or artificial substances) and molding process |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1242425A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002038676A1 (en) * | 2000-11-10 | 2002-05-16 | Balmoral Technologies (Proprietary) Limited | Method of making a finished product |
-
1959
- 1959-10-30 FR FR39862A patent/FR1242425A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002038676A1 (en) * | 2000-11-10 | 2002-05-16 | Balmoral Technologies (Proprietary) Limited | Method of making a finished product |
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