摘要:
Ce procédé comprend les étapes; obtenir (1) des fibres de bois naturel calibrées à une taille prédéterminée, chauffer (3) ces fibres de bois naturel calibrées à une température comprise entre 170°C et 230°C pendant une durée prédéterminée en vue d'obtenir des fibres de bois thermotraitées, et mélanger (4) les fibres de bois thermotraitées avec un liant. Les étapes (3, 4) de traitement thermique et de mélange sont réalisées en ligne. De plus, le procédé comprend le contrôle (6) d'une caractéristique mécanique du profilé et, le cas échéant, un ajustement d'un paramètre de fabrication parmi la température de chauffage, la durée de chauffage, la taille des fibres de bois naturel calibrées, la quantité de liant et l'essence de bois naturel à partir de laquelle sont obtenus les fibres de bois naturel calibrées.
摘要:
A process for making poly alpha-1,3-glucan formate films by extrusion is disclosed. These films are translucent or transparent and be used in packaging applications.
摘要:
Unexpectedly unique and environmentally friendly composite material structures, storage articles fabricated therefrom, and related methods. The composite structure includes at least one or more fiber-containing layers, such as fiberboard or other layers having fibers from natural and/or synthetic sources, and one or more mineral-containing layers. The mineral-containing layer(s) comprises a thermoplastic bonding agent fixing the mineral particles in place. The fiber-containing layer(s) and mineral-containing layer(s) can be shaped, sized, and manufactured such that the composite structure formed therefrom is capable of being machined to form the storage article. The composite structure can be repulped and recycled without the use of dispersions, emulsions, or aqueous solutions. Further, the composite reduces layer mass requirements for heat seal, barrier, and fiber adhesion compared to polymer layers. The composite structure further has tensile strength and other structural characteristics that allow it to be readily machined into desired storage article forms.
摘要:
Die Erfindung betrifft einen Verbundwerkstoff mit einem Anteil an Holz und einem Anteil an vernetzten Melaminharzen, der dadurch gekennzeichnet ist, dass die vernetzten Melaminharze aus Melaminharzen gebildet werden, die im Wesentlichen linear aufgebaut sind und eine scherabhängige Viskosität aufweisen. Die Erfindung betrifft ebenfalls ein Verfahren zur Herstellung der Verbundwerkstoffe und deren Verwendung.
摘要:
A method for manufacturing an element (6) includes: mixing of at least two resin component (2, 3) each other and with powders, splinters, granules, fibers or similar (4, 5) to obtain a mixture (8); molding and the consolidation of the mixture (8) in order to obtain the molded element (6); providing an unsaturated fat acid (7) to the mixture (8) before the molding and the consolidation.
摘要:
Elongate synthetic wood mouldings formed of a settable wood paste comprising wood flour, a binder and a solvent that is flexible under certain conditions and stiff under other conditions are cured, stored, transported and displayed in a coiled form. For use each is warmed in a heated liquid bath, so that it becomes flexible whereafter it is uncoiled and applied to a required surface.
摘要:
A method of and apparatus for moulding using a die (10) having a face (15) formed with at least one moulding cavity (12) therein including the steps of filling the mould cavity to excess with a desired moulding material (42), placing a backing sheet (20) over the face of the mould and pressing the backing sheet and mould against each other to compact and shape the mould material by moving the die and backing sheet at least once between two spaced, substantially parallel roller (26, 28). Excess mould material is removed by slicing across the face of the die prior to removing a moulding from the die.
摘要:
The present invention relates to a method for extruding small vegetal parts, mainly wood parts mixed with binders. During the extrusion (1), the small parts are compressed by a piston (4) from a filling area (3) and through a forming vessel and through a heated curing canal (5). In order to substantially reduce the length of the curing canal (5) as well as the curing time, steam is applied from the outside onto the already compressed and cured rod at the outer area thereof, the surrounding of said rod being adequately sealed. The steam flows through the heated outer layer of the rod and entails a brisk temperature rise inside said rod due to the condensation within the latter. The rapid curing of the binder makes it possible to substantially reduce the length of the curing canal (5) as well as the curing time.
摘要:
Apparatus and method for forming structural panel members from fiber crop material such as rice, straw and the like. The fiber crop material is bailed into circular or rectangular bails which bails are placed in a debailer/shredder (11). The fiber material is cut to a predetermined length and conveyed pneumatically to a rectangular slot between upper (111, 506) and lower platen members (110, 505). Paper is applied with glue to the upper and lower surfaces of the fiber and is folded up to cover the sides of the fiber. The glue is cured on a curing table (23) and the fiber is severed in a cutting section (24) into desired lengths.