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: 2016-11-25
The present invention relates to a structurally enhanced agricultural product containing cellulose filaments (CF), and a method for producing the structurally enhanced agricultural material into the sheets. Applying CF improves significantly the wet-web strength of the agricultural material sheets. The method comprises preparation of a pulp slurry of agricultural materials followed by mixing with a water suspension of CF or CF-containing cellulose fibers. The pulp blend is then used to produce an agricultural material sheet by papermaking process.
Pulp and Paper Research Institute of Canada | Date: 2017-02-15
The present relates to a process for incorporating of wet natural fiber and starch into thermoplastics and the composite produced. The process for producing the composite comprises steps of: providing a wet natural fiber; providing a starch; providing a plasticizer; providing a thermoplastic; mixing the wet natural fiber, the starch and the plasticizer with water to produce a paste, and compounding the paste with the thermoplastic to produce the composite. The composite in a preferred embodiment comprises 50 weight % natural fiber/starch and a plasticizer; 50 weight % thermoplastic; a tensile modulus greater than 1450 MPa and a tensile strength greater than 41 MPa.
Pulp and Paper Research Institute of Canada | Date: 2017-03-15
The present invention relates to the use of cellulose nanocrystals (CNC) blended with a polymeric material selected from a polyvinyl alcohol) (PVOH), an ethylene acrylic acid copolymer (EAA), other carboxylated polymer latexes, or other polymer blends, and applied as a thin coating layer on plastic films for printing with digital processes such as ink jet and laser printing, as well as with more conventional printing processes such as flexography and offset lithography, to the control of ink adhesion to the plastic film, and to the reduction in the oxygen transmission rate (OTR) of the plastic film.
Pulp and Paper Research Institute of Canada | Date: 2016-06-10
Radio-frequency methods for engineered wood products (EWPs), such as thick EWP products and plywood having higher moisture contents are disclosed. For thick EWP products, intermittent RF is used as the sole energy source to heat the thick EWPs. This method for thick EWPs yields a higher panel MC of 9-12% compared to 5-8% from conventional hot pressing. The RF heating process facilitates manufacturing of structural composite lumber (SCL) products including LVL, oriented strand lumber (OSL) and veneer strand lumber (VSL) in addition to sawn lumber. For plywood products, a method of using RF in pre-pressing of stack of veneer layers for preparation of plywood is developed. In a preferred embodiment a conventional cold pre-press is retrofitted with a radio-frequency (RF) generator that pre-heats the stack of veneer layers to 60-80 C. under pressure. The pre-heating allows for a final hot press at lower press temperature and higher MC within the stack.
Pulp and Paper Research Institute of Canada | Date: 2016-01-22
The invention relates to novel absorbent fibres/filaments from low-substituted carboxymethyl cellulose and the method of producing same. The filaments are produced by wet spinning, wherein the spinning dope is entirely comprised of low-substituted carboxymethyl cellulose dissolved in sodium hydroxide. The resulting CMC filaments have degree of substitution ranging from 0.10-0.35 and degree of polymerization ranging from 250-650 with the CMC uniformly distributed throughout the filament. The absorbency in deionized water and saline (0.9% NaCl) solution is 120 g/g and 30 g/g, respectively. The retention of deionized water and saline (0.9% NaCl) solution within the fibres is 48 g/g and 25 g/g, respectively.
Pulp and Paper Research Institute of Canada | Date: 2016-04-25
The present description relates to a process of producing a dry mixed product comprising cellulose filament (CF) and a carrier fibre, and a dry mixed product of re-dispersible cellulose filament and a carrier fibre that permits the CF to retain its dispersibility in water and hence superior reinforcement ability in papermaking furnishes, composite materials, or other materials where CF is used. The process comprises mixing a water suspension of never-dried CF with a cellulose fibre pulp carrier followed by thickening to a suitable concentration so that it can be further processed and dried in a conventional device such as a dryer can of a pulp machine or a flash dryer.
Pulp and Paper Research Institute of Canada | Date: 2016-04-20
Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most cases, the residual acid is neutralized with lime before the sugar conversion step. By doing so, a waste calcium sulphate stream is generated and sent to disposal. The efficient separation of acid from the sugars would allow the recycle of the acid and make the entire process more economically viable. We found that a resin bed packed with an acid retardation resin can be used to achieve an efficient separation (i.e. 98.5% recovery of the acid) of the sulfuric acid from the sugars. The resin bed can be simply regenerated with water.
Pulp and Paper Research Institute of Canada | Date: 2016-03-01
The present disclosure relates to a process for extracting sugars from a pretreated lignocellulosic biomass. This process consists of contacting the pretreated lignocellulosic biomass with low charges of an aqueous peroxy acid (PA) solution to produce a liquid fraction (containing a small amount of lignin and hemicellulose degradation products) and a solid fraction containing cellulose, hemicellulose and lignin. The solid fraction can then be subjected to enzymatic hydrolysis with a variety of cell wall-degrading enzymes to produce a lignin-rich residue and a sugar solution that can be fermented to a variety of (bio)chem icals.
Pulp and Paper Research Institute of Canada | Date: 2016-01-29
The present invention relates to wood laminate panels, a system of two or more panels joined permanently together, the method of making the panels and the fabrication of object with the panels. The wood laminate panel comprises an elongated body having a longitudinal axis and extending a length thereof, the body having an arcuate cross-section in a plane substantially perpendicular to the longitudinal axis and comprising first and second spaced apart edge surfaces extending along the length of the elongated body and each including a joint, the attachment joint having a shape that is complementary to that of the second edge surface such that the wood laminate panel is permanently jointable with an adjacent identical laminate panel through an engagement of adjacent complementary edge surfaces.
Pulp and Paper Research Institute of Canada | Date: 2016-04-15
Most processes currently being proposed and/or used for the production of lignin from kraft or soda black liquors are capable of producing two main types of lignin: high residual content (HRC) lignin and low residual content (LRC) lignin. Surprisingly, it was discovered that HRC lignin, is a suitable ingredient in alkaline adhesives, particularly wood adhesives of the phenolic type (e.g. resole resins). This biomaterial is environmentally green and remarkably low cost, which makes it an industrially viable material to be used as a novel and major ingredient in phenolic adhesives for the manufacture of exterior grade plywood, laminated veneer lumber, oriented strand board (OSB) and other wood productsthis was successfully demonstrated in a number of laboratory experiments as well as several different mill trials. The composition, preparation and application of such wood adhesives are hereby disclosed.