Weyerhaeuser Company Limited

Elmer Christensen

Herbert D Muise

Stanley L Floyd

Michael James Yancey

William D Snyder

Brian C Horsfield

H Donald Muise, Jr, Legal Representative

Gerald Wilhite

Billy B Pearce

Calvin K Kendall

Larry H Jones

Everette Shaw

A method for encapsulating a cellulose based substrate with polymeric film involves raising the temperature of the respective films using an electromagnetic radiation source and providing a pressure differential between an environment defined between the films and an environment external to the films so that conformance of the films to the cellulose based substrates is promoted. The cellulose based substrate is entirely encapsulated by the plastic films and the films are sealed around the peripheral edges of the cellulose based substrate as well as edges that are defined by slots and cutouts.

Process for encapsulation of cellulose based substrates using electromagnetic radiation heating

A system for estimating a velocity of a stress wave induced in a log or tree stem is used to maximize the value of wood products produced. An accelerometer is placed against the log while the log is struck with a pneumatic hammer. By monitoring the signals received at the accelerometer, the velocity of stress wave can be determined. Based on the velocity, an estimate of the modulus of elasticity (MOE) for the wood in the log is made. A price table is selected that relates different sizes of lumber having the determined modulus of elasticity to a current market value. The log is then cut such that the value of the lumber produced is maximized.

Log cutting optimization system

Growing community of inventors

Kent, WA, United States of America

Elmer Christensen