Plywood trim

Particle Preparation. The initial step in particleboard production is reduction of the wood raw material into the desired configuration for the particular particleboard to be manufactured. The wood may be received from a number of sources and in a variety of forms. Roundwood, chips, planer shavings, plywood trim, and sawdust are the most common raw material forms and rarely does one particleboard plant use more than two or three of the above sources. Different processing steps are required to produce quality particles from each of the above sources consequently, each plant is limited to the source which is compatible with their... 

Chippers and flakers are the most widely used knife reduction systems. Chippers produce coarse particles from roundwood, slabs, plywood trim, and other residues from the primary wood industry. Chippers are the initial reduction step in particle preparation and further size reduction is necessary to produce a satisfactory particle. The chipping operation may be located at the particleboard plant or the chips may be delivered to the plant from an in-woods chipping operation, a chip-n-saw mill, or from another primary wood industry. Screening after the chipper removes all fines and oversize chips before they enter the secondary reduction step. Oversize chips are recycled to the chipper and fines are normally sent to the boiler for fuel. 

All dry veneer waste and plywood trim waste not used for fuel is commonly chipped and sold to particleboard plants as furnish. 

Wood residues currently burned in commercial units include plywood trim and sander dust, wood shavings, whole log chips, bark, and log yard wastes. Coal or agricultural residues can also be burned in the system either separately or in combination with other fuels. 

There is a hybrid product available which has a veneer back, a layer of PF-coated wood particles, core veneer cross-ply, another layer of wood particles, and a top veneer. This assembly is pressed into a panel, trimmed to size, and sold into the stmctural-use panel market where it competes with plywood and oriented strand board. 

Penetrating stains are suitable for both smooth and rough surfaces. However, their performance is markedly improved if applied to roughsawn, weathered, or rough-textured wood 4, 96, 99, 112, 136, 137, 141-144) because more material can be applied to such surfaces. They are especially effective on lumber and plywood that does not hold paint well, such as flatgrained and weathered surfaces, or dense species. Penetrating stains can be used effectively to finish such exterior surfaces as siding, trim, exposed... 

They are also used to a considerable extent as components in doors, cabinets, cupboards, and miUwork [118]. They have frequently replaced sohd wood, plywood, and particleboard for many furniture apphcations. They also have potential use in other interior and exterior markets such as moldings, exterior trim, and pallet decking [119]. 

There are a couple of ways to use woodworking templates, but here well draw directly on a piece of 4" plywood, trace it against our wood, and rough-cut it to shape with a jigsaw. Finally we will use what s called a flush trim bit mounted in a router to smooth the wood to the template. 

This represents a major use of structural adhesives in the industry and a wide range of internal trim panels are produced in this way by bonding melamine to plywood or aluminum. 

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