摘要:
A consolidated cellulosic article of increased thickness and target face density, as well as an apparatus and method of manufacturing same, are disclosed. The apparatus includes first and second dies adapted to move toward one another with a mat of cellulosic material and a binding agent therebetween. When the dies move together, the mat is compressed under pressure and heat with forms on one of the dies forming indentations in the mat. Compression zones of increased density form between the indentations and a first face of the mat. By spacing the forms appropriately, the compression zones overlap, and the first face of the resulting consolidated board is provided with substantially uniform density. Since the entire board is not compressed to the same degree, its overall thickness is enhanced while the density of the first face of the mat is increased, and relatively little material is used.
摘要:
The present invention provides an improved debarking device of the flail type. A plurality of elongated chain sections are mounted on a rotatable drum is substantially uniform rows. At least some of the chain sections have a lateral vibratory length less than the remaining chain sections.
摘要:
A method of preparing a cellulosic article includes a step of combining cellulosic material and binder resin to form treated cellulosic material. A mat is formed of a plurality of layers of the treated cellulosic material. The method also includes the steps of interfering with bonding of resin between two adjacent layers of the mat, and applying heat and pressure to the mat to form a cellulosic composite article having an internal blistered pattern. A consolidated cellulosic article includes a consolidated cellulosic mat and a layer of blisters disposed in the consolidated cellulosic mat.
摘要:
A fiberboard mat, whether made by a dry process, a wet process, or dry/wet combination thereof, can be consolidated against a fiber displacement die, contacting and penetrating into a back major surface of the fiberboard mat, to provide fiber-void regions, to achieve a lighter panel, while achieving fiber savings and while maintaining structural integrity and substantially uniform density in the fiber-containing regions. The fiber displacement die includes a plurality of pointed projections that serve to laterally displace fibers, during consolidation of the mat. The displaced fibers are held in their displaced position during the consolidation of the fiberboard mat to provide a consolidated panel having substantially uniform density, or at least a substantially more uniform density, that varies substantially in caliper due to the fiber-void regions.
摘要:
Methods are provided for the design of backing dies utilized with front, decorative embossing dies for the simultaneous production and embossing of wood composite panels. The methods apply where more than one decorative pattern is embossed onto the wood composite panels during a single press cycle. The cross-sectional area or volume of the panels impressed with each different decorative pattern forms the basis for the methods of the design. Included are methods of forming wood composite panels using dies made according to the disclosed die design methods.
摘要:
A mechanized tree pruner is mounted on the boom of a prime mover so the pruning head can be moved up and down a standing tree. The head is comprised of a main frame on which is mounted two delimbing stations each of which has a pair of movable delimbing knife chains mounted on grapple type arms. Below each station is a positioning means for orienting the head with respect to the standing tree. When the arms are closed causing the knife chains to encircle the tree, upward movement of the pruning head will then result in all limbs and branches being severed as they are impacted by the knife chains.
摘要:
A method of preparing a cellulosic article includes a step of combining cellulosic material and binder resin to form treated cellulosic material. A mat is formed of a plurality of layers of the treated cellulosic material. The method also includes the steps of interfering with bonding of resin between two adjacent layers of the mat, and applying heat and pressure to the mat to form a cellulosic composite article having an internal blistered pattern. A consolidated cellulosic article includes a consolidated cellulosic mat and a layer of blisters disposed in the consolidated cellulosic mat.
摘要:
A consolidated cellulosic article of increased thickness and target face density, as well as an apparatus and method of manufacturing same, are disclosed. The apparatus includes first and second dies adapted to move toward one another with a mat of cellulosic material and a binding agent therebetween. When the dies move together, the mat is compressed under pressure and heat with forms on one of the dies forming indentations in the mat. Compression zones of increased density form between the indentations and a first face of the mat. By spacing the forms appropriately, the compression zones overlap, and the first face of the resulting consolidated board is provided with substantially uniform density. Since the entire board is not compressed to the same degree, its overall thickness is enhanced while the density of the first face of the mat is increased, and relatively little material is used.
摘要:
A method and system for manufacturing a consolidated cellulosic article having first and second surfaces of a desired contour, a uniform density and variable caliper and basis weight are disclosed. The method and system employ a primary press having first and second similarly contoured platens to consolidate a mat of cellulosic material and a binding agent to a softboard having first level of density with first and second opposed sides of similar contour. A removal tool is then employed to remove cellulosic material from one or both of the first and second sides in a planar fashion. The resulting mat is then compressed a second time by a secondary press having first and second platens corresponding in shape to a higher density level while maintaining a substantially uniform caliper and basis weight.
摘要:
A method of manufacturing a contoured, consolidated cellulosic article, with variable basis weight, is disclosed. The method employs a former to create a mat having a substantially uniform thickness which is pre-pressed to retain its shape. The pre-pressed mat is then machined along at least one surface to result in a desirable contour. The contoured mat is then consolidated within a secondary press. The secondary press preferably includes platens shaped complimentarily to the surfaces of the mat.