Matches 1 - 45 out of 45
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6837971 Device and method of using explosive forces in a contained liquid environment  
A method and apparatus for subjecting a material in a liquid to explosive force is provided. The method and apparatus involve a vessel having a length greater than it width. The vessel has a top...
6623600 Method of performing an impregnating or extracting treatment on a resin-containing wood substrate  
In impregnating or extracting treatments of resin-containing wood substrates using a resin-soluble supercritical fluid as delivering or extractive solvent medium problems due to exudation of resin...
6416621 Apparatus, process and pressure reactor for the treatment of solids with pressurized liquid gases  
The invention relates to a process for the treatment of solids with pressurized liquid gases, in particular liquid ammonia, with which the to be treated solid is fed into a pressure reactor at...
6336992 Method and apparatus for wetting fibrous material  
A method and an apparatus for wetting fibrous material, such as coarsely shredded waste paper. Fibrous material and wetting fluid is introduced into a wetting enclosure. Pressure is decreased...
6228213 Production of microcrystalline cellulose by reactive extrusion  
This process involves feeding cellulose into an extruder with an acid solution. The extruder is comprised of a screw and a barrel. The screw is rotated so as to pressurize the cellulose, and the...
6176970 Device and method of using explosive forces in a contained liquid environment  
A method and apparatus for subjecting a material in a liquid to explosive forces is provided. The method and apparatus involve a vessel having a length greater than it width. The vessel has a top...
5718802 Process for obtaining cellulosic fiber bundles at least 2.5 cm long from plant stalk rind  
Novel fiber bundles may be produced as a by-product of sugar cane or other plants. These fiber bundles may be spun into a yarn, or formed into a non-woven mat. The non-woven mat is useful, for...
5262004 Method of extracting chemical preservatives from treated wood  
Preservatives and oil are extracted from treated wood. For this purpose, treated wood that is intended to be discarded is comminuted, the chips are impregnated with an alkaline solution until...
5198074 Process to produce a high quality paper product and an ethanol product from bamboo  
A method of producing high quantities of ethanol and a high quality pulp to produce a variety of papers. The method comprises preparing the bamboo by chipping, shredding and washing. This bamboo...
4857145 Process for making a pulp from bamboo  
Bamboo can be formed into a suitable pulp if prior to digestion it undergoes a process of shredding, washing and wet depithing. The fibers are then chemically digested preferably by a process which...
4798651 Process for preparing pulp for paper making  
This invention relates to an improved process for preparing pulp suitable for paper making. Although processes using explosive decompression have been known in the past, it has been believed that...
4699691 Thermomechanical digestion process  
A process for thermomechanical digestion using a multiple blowdown technique. The digestion chemical is added just prior to blowdown which results in a concentration of digesting chemicals on the...
4689117 Thermomechanical digestion process for enhancing the brightness of cellulose pulp using bleachants  
The brightness of a thermomechanical pulp can be improved if a serial multiple blowdown technique is used and a bleachant is present at an effective concentration throughout the thermomechanical...
4645541 Method of producing level off DP microcrystallinecellulose and glucose from lignocellulosic material  
Microcrystalline cellulose has many applications in the pharmaceutical, food, paper and structural composite industries. Level off DP (Degree of Polymerization) microcrystalline cellulose is made...
4600545 Process for the preparation of fibers from polymeric materials  
Polyolefin fibers, which are suited for at least partially substituting the cellulose fibers in the manufacture of paper, are produced by a process which consists in preparing in a pressure vessel...
4540467 Method for fragmenting municipal solid wastes  
A method and apparatus for the removal of mold core material from metal castings and for fragmentation of municipal waste material, e.g., paper products, involves heating and hydrating the...
4461648 Method for increasing the accessibility of cellulose in lignocellulosic materials, particularly hardwoods agricultural residues and the like  
This invention comprises a method for increasing the accessibility of cellulose in lignocellulosic materials to chemical or biochemical reagents. The material is steam cooked for a predetermined...
4295925 Treating pulp with oxygen  
Washed wood pulp from a continuous digester is treated with oxygen in the blow line from the digester. Most of the treatment occurs within the mixer. The mixer has a mixing zone with a swept area...
4235707 Method and apparatus for treating solid municipal refuse and other cellulose containing material  
Solid Municipal Waste is loaded, or loaded and compacted, into a pressure vessel which has means for very fast opening for discharging the contents. The pressure vessel is pressurized, with steam,...
4163687 Method and apparatus for explosively defibrating cellulosic fiber  
A uniquely designed nozzle is described for assisting the liberation of fibres from cellulosic material during an explosive defibration process. The nozzle is constructed with a plurality of...
4093507 Method of liquid treating cellulose fibres with elastic pressure shocks  
Cellulose fibers are treated by providing the fibers in a 10-90% concentration in liquid, and applying elastic pressure shocks to the fibers for a duration not exceeding one second and of a...
4000032 Process of freeing cellulose fibers from lignocellulosic material by irradiation  
A process is provided for freeing cellulose fibers from lignocellulosic material, which comprises subjecting particulate lignocellulosic material to irradiation at a frequency within the range from...
3354030 Alkaline sulfite digestion followed by acid digestion with bisulfite  
2771361 Defibration processes  
2711369 Progressive explosion process of defibration  
2373690 Process for producing artificial lumber  
2300184 Method and apparatus for producing pulp  
2234188 Process of making light-colored ligno-cellulose fiber  
2078222 System of fiber liberation  
2007348 Process and apparatus for delignification  
1996797 Production of cellulosic products  
1938060 Process for the treatment of fibrous plants for the recovery of the fibers thereof  
1886020 Process of and apparatus for treating fibrous material  
1872996 Process of making paper pulp  
1659809 Process for freeing cellulose fibers from vegetable materials  
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Matches 1 - 45 out of 45