Materials & Bioeconomy
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Item Aspen Supply in Minnesota 1977 to 2007(University of Minnesota, Duluth, 1990-07) Gephart, John S; Tevik, John B; Adams, Roy D; Berguson, William EItem Two-Step Overlay Project Using the Laboratory Press(University of Minnesota, Duluth, 1990-02) Roos, KennethItem Commercialization of a Residential Panel Door: Final Report(University of Minnesota Duluth, 1999-10) Donahue, Patrick KItem Heat Sterilization Times of Five Hardwood Species: Stress Wave E-Rating of Specimens(University of Minnesota Duluth, 2004-09) Wang, Xiping; Forsman, John W; Erickson, John RHeat Sterilization of lumber, timbers and pallets is currently used to kill insects to prevent their transfer between countries in international trade. A typical requirement is that the center of any wood configuration be held at 133 °F (56 °C) for 30 min. However, the time required for the center to reach this temperature can vary widely depending on a number of factors such as wood species, physical prope1iies, cross-sectional dimensions, and heating medium, etc. The overall objective of this project was to quantify the effects of wood species, cross-sectional dimension, and heating medium on the time required to heat the center of hardwood lumber and timbers to 133 °Fat a heating temperature of 160 °F (71 °C). A stress wave E-rating procedure was also added to examine if the stress wave properties of lumber and timbers can be any useful in predicting heating times for untested species in the future.Item National Casein Adhesive Evaluation Heat Performance(University of Minnesota Duluth, 1999-04) Krause, Victor; Brashaw, Brian KThe objective of this project was to evaluate the heat resistance of membrane pressed thermoformed vinyl panels manufactured by the Natural Resources Research Institute (NRRI) using a polyurethane dispersion (PUD) adhesive mix supplied by National Casein Company.Item Low Frequency Vibration Approach to Assess the Performance of Wood Structural Systems(University of Minnesota Duluth, 2003-10) Wang, Xiping; Ross, Robert J; Erickson, John R; Forsman, John WThe primary means of inspecting buildings and other structures is to evaluate each structural member individually. This is a time consuming process that is expensive, particularly if sheathing or other covering materials must be removed to access the structural members. This report presents an effort to use a low frequency vibration method for assessing the structural performance of wood floor systems.Item Development of Stain and Sealer Formulations and Markets: MTI Final Report(University of Minnesota Duluth, 1999-10) Krause, Victor; Gephart, John SOBJECTIVE: To compare topcoat and staining properties of 2 Van Technologies sealer formulations to 5 commercially available sealers. To provide information to Van Technologies on the properties and performance of these sealers.Item The Development and Commercialization of a Residential Panel Door: Final Report(University of Minnesota Duluth, 1999-10) Donahue, Patrick KObjective: To facilitate the commercialization of a residential wood door using computer numerically controlled (CNC) routing and engineered veneer overlay technologyItem Production Testing of Modified Soy Flour/MDI Adhesive in Oriented Strand Board Manufacturing: Final Report(University of Minnesota, Duluth, 1997-12) Edwardson, Christian F; Quan, XianzhiItem Evaluation of the Use of Acoustic Technology to Identify Low Value Logs(University of Minnesota Duluth, 2007-06) Wang, Xiping; Ross, Robert J; Brashaw, Brian K; Vatalaro, Robert J; Johnson, ScottThe purpose of this service was to evaluate the feasibility and effectiveness of a resonance based acoustic technique for sorting low grade and low value logs from the chip wood mix stems. This work is conducted under a service agreement between the Natural Resources Research Institute (NRRI) at the University of Minnesota Duluth and the Seneca Sawmill Co. in Eugene, Oregon.Item Manufacturing and Use of Structural Lumber Substitutes: Final Report(University of Minnesota, Duluth, 1990-01) Edwardson, Christian FMinnesota does not have the necessary timber resource to provide the quality and quantity of softwood lumber used in building construction in the State. If an appropriate composite lumber substitute (CLS) can be identified and developed using Minnesota species, job creation and decreased use of imported lumber could be realized. This project endeavored to identify potential lumber substitutes and evaluate the economic feasibility of manufacturing various substitutes in Minnesota. Some product development work was initiated. Parallel laminated veneer lumber (PLVL) displayed excellent potential based on an economic evaluation. Some preliminary laboratory studies of this material were established. PLVL was manufactured with aspen and birch used singly or in combination. These boards were tested to establish preliminary strength information. This report includes a detailed economic analysis for the construction of a PLVL plant in Minnesota, with a sensitivity analysis. Less detailed numbers were available for the other CLS options resulting in less detailed analysis, but allowing for some comparisons. This study shows the excellent potential for the development of a CLS plant in Minnesota and work will be continued and expanded in a related project involving a major Minnesota utility company. The planned future experiments will primarily involve the preservative treatment aspects of PLVL.Item Undrained Peatlands for Short Rotation Forestry(University of Minnesota, Duluth, 1989-12) Berguson, William EItem Commercialization of a Residential Panel Door (1995-02): Semi-Annual Progress Report(University of Minnesota, Duluth, 1995-02) Donahue, Patrick KThe project's goal is to continue technical and business development efforts to facilitate the commercialization of a veneered residential wood door designed with an engineered substrate and an engineered veneered door skin. Specifically, to continue product performance testing. This task will be accomplished by combining business expertise of Lexington Manufacturing of Coon Rapids, Minnesota, and the product development skills of the Natural Resources Research Institute (NRRI) scientists. The successful completion of this work will posture Lexington Manufacturing closer to expanding their business with a veneered panel door product line.Item Preliminary Evaluation of Hybrid Cottonwood Lumber Mechanical Properties(University of Minnesota, Duluth, 1995-12) Brashaw, Brian KAs the availability of traditional lumber resources decreases, hybrid cottonwood and hybrid aspen are being considered for potential use as a lumber resource. The University of Minnesota, Crookston and the Natural Resources Research Institute (NRRI) has an ongoing research focus on the forestry, economics, and utilization of hybrid cottonwood. Potential applications for this material include lumber and pulpwood for paper and oriented strandboard (OSB).Item Development of Stain and Sealer Formulations and Markets (1995-02): Semi-Annual Progress Report(University of Minnesota, Duluth, 1995-02) Gephart, John S; Krause, VictorObjective: Project objectives are to develop sealers and stains free of volatile organic compounds (VOCs) for use on Minnesota's diffuse hardwood species such as aspen and birch.Item Trap Target Product Development (1995-02): Semi-Annual Progress Report(University of Minnesota, Duluth, 1995-02) Brashaw, Brian KObjective: To evaluate the trap target industry and identify potential Minnesota materials that could be used in the manufacture of commercial trap targets.Item Sealer Study(University of Minnesota, Duluth, 1995-03) Krause, VictorOBJECTIVE: To compare topcoat and staining properties of 2 Van Technologies sealer formulations to 5 commercially available sealers. To provide information to Van Technologies on the properties and performance of these sealers.Item Optimizing Wax Addition in OSB(University of Minnesota, Duluth, 1996-01) Edwardson, Christian FItem The Development of New and Improvement to the Performance of Existing Compliant Wood Coatings: Final Report(University of Minnesota, Duluth, 1997-02) Krause, Victor; Gephart, John S; Brashaw, Brian KObjective: To assist Van Technologies, Inc. in the development of environmentally compliant wood coatings. The focus of the project was on the development of a water-based conversion topcoat conforming to Kitchen Cabinet Manufacturers Association (KCMA) standards and colorant selection for use in the development of a tinted water-based topcoat and a tinted ultraviolet (UV) curable topcoat, and additional stain colors in both water-base and UV curable systems.Item Adhesive Evaluation for Heat Resistance Testing Results(University of Minnesota, Duluth, 1995-12) Brashaw, Brian K; Krause, VictorThe objective of this project is to evaluate the heat resistance of membrane pressed thermoformed vinyl panels manufactured by Northern Contours using an adhesive supplied by Kleiberit Inc.