FPInnovations is a Canadian non-profit member organization which carries out scientific research and technology transfer for the Canadian forest industry, based on priorities set by the company's members. The company's headquarters are located in Pointe-Claire, Quebec, and has its main research centers located in Vancouver, Quebec City, and Pointe-Claire, but also has many regional offices located throughout the country. Wikipedia.
Pulp and Paper Research Institute of Canada | Date: 2015-10-06
There are provided gypsum panels, sheets and multi-layer sheets as well as methods of preparation thereof. For example, there are provided cellulose filament-reinforced gypsum panels, sheets and multi-layer sheets and methods of preparation thereof. For example, in such gypsum panels, sheets and multi-layer sheets gypsum is bound with cellulose filaments to strengthen the gypsum panels, sheets and multi-layer sheets. The cellulose filament-reinforced gypsum panel can be, for example, a core comprising a honeycomb or corrugated structure. There are also provided aqueous suspensions comprising cellulose filaments and CaSO
Pulp and Paper Research Institute of Canada | Date: 2013-11-07
The present invention relates to dry cellulose filaments and particularly those that are re-dispersible in water. Dry cellulose filaments comprise at least 50% by weight of the filaments having a filament length up to 350 m; and a diameter of between 100 and 500 nm, wherein the filaments are re-dispersible in water. Also described here is a film of dry cellulose filaments comprising the filaments described, wherein the film is dispersible in water. A method of making a dry film of cellulose filaments is also described that includes providing a liquid suspension of the cellulose filaments described; and retaining the filaments on the forming section of a paper or tissue making machine or on a modified paper or tissue making machine. The film can be optionally converted to powders or flakes for shipment, storage or subsequent uses. The filaments, the film, the powders or flakes and the method are in a preferred embodiment free of additives and the derivatization of the filaments.
Pulp and Paper Research Institute of Canada | Date: 2014-03-24
A method for the production of cellulose films with at least one hydrophobic or less hydrophilic surface, or with at least one surface with a water contact angle () in a range from 55 to less than 100 is described. The method involves contacting the cellulose material with a hydrophobic solid material during the preparation of the cellulose films or with a vapour of a non-polar or polar aprotic solvent during or after the preparation of the cellulose films. Examples of the cellulose material are cellulose filaments (CF) made to have at least 50% by weight of the filaments having a filament length up to 350 m and a filament diameter between 100 and 500 nm from multi-pass, high consistency refining of wood or plant fibers, and commercially-available sodium carboxymethyl cellulose. Examples of the hydrophobic solid material are hydrophobic polymers, poly(methylpentene) and poly(ethylene). Examples of the non-polar solvent are hexane and toluene. Examples of the polar aprotic solvent are acetone and ethyl acetate.
Pulp and Paper Research Institute of Canada | Date: 2014-06-16
The present invention describes a process and system of producing methanol from methanol condensates. In a preferred embodiment the condensates are biomethanol condensates from chemical pulp mills and various waste sources used to produce a purified biomethanol. Pulp condensates are rich in methanol and contain many other contaminants. Presently, most chemical pulp mills, such as Kraft pulp mills use steam stripping to remove and concentrate the methanol and burn the methanol onsite along with the contaminants. A combination of treatments that include air stripping, steam stripping, distillation and reverse osmosis is described to obtain purified biomethanol suitable for sale or use on site.
Pulp and Paper Research Institute of Canada | Date: 2015-08-05
The present invention relates to a microwave interactive susceptor structure for the microwave heating of food products. In one aspect, the invention relates to a duplex design for the microwave interactive structure on cellulose-based substrates. In another aspect, the invention relates to a method of patterning the duplex microwave interactive structure on the substrates using a printing press with or without an alignment function.