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Heat conditioning of veneer blocks


, : Heat conditioning of veneer blocks. Research Bulletin, Forest Research Laboratory, Oregon State University (29): 34

Descriptions are given of the heat conditioning process for softening veneer blocks so that they can be peeled more readily.

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Related references

Sim, H.; Steinhagen, H.; Govett, R., 1989: Effect of heat conditioning time on veneer recovery from grand fir peeler blocks. The effect of grand fir peeler block conditioning time on veneer recovery was investigated under summer conditions in an Idaho plywood mill. Only the conditioning time was varied among tests. Blocks conditioned for half the normal mill conditionin...

Steinhagen, H.; Sim, H.; Govett, R., 1989: Penalty of insufficient conditioning of grand fir and Douglas-fir veneer blocks. Cost/benefit analyses of heat conditioning veneer peeler blocks over a range in heating times were conducted at two northwestern plywood mills during summer operations. Wood species used were grand fir (mill 1) and Douglas-fir (mill 2). In both mi...

Steinhagen, Hp, 1993: Veneer block conditioning manual for veneer and plywood production personnel. Technical report 991 (23)

Steinhagen, H.P., 2005: Veneer block conditioning manual for veneer and plywood production. Veneer blocks are heat-conditioned in water or steam in an effort to plasticize (soften) the wood. When a sufficiently heated block is cut into veneer, the veneer will bend over the lathe's knife without splitting. This leads to improved volu...

Lutz, J.F.; Patzer, R.A., 1976: Spin-out of veneer blocks during rotary cutting of veneer. The torque needed to turn basswood [Tilia spp.] blocks into 1/4-inch thick rotary cut veneer was measured for different lathe settings and block temperatures. Increasing the wood temp. reduced the force needed for cutting and reduced the torque th...

Fronczak, F.; Patzer, R., 1982: Influence of chuck design on spin-out torque in softwood veneer peeling blocks Log processing machinery, veneer yield increase. Research paper FPL United States Department of Agriculture Forest Service Forest Products Laboratory: 982 (427)

Steinhagen, Hp, 1989: Graphic method to estimate heat-conditioning periods of frozen and nonfrozen peeler blocks. The graphs presented here provide the veneer and plywood industry with a method to estimate block conditioning times. The information was generated via the computer program LOGHEAT. The graphs are easy to use and cover a wide range of variables.

Morrison, G.E.; van der Kooy, D., 1997: Cold shock before associative conditioning blocks memory retrieval, but cold shock after conditioning blocks memory retention in Caenorhabditis elegans. The effects of cooling on associative learning and memory processes in Caenorhabditis elegans were investigated by giving the worms cold shock at various times before or after conditioning. A pretraining cold shock in the 30 min immediately before...

Villiere, A., 1969: The amounts of heat necessary to heat wood. Application to the steam-heating of veneer logs. A theoretical study of the consumption of heat necessary to raise wood to a given temperature, illustrated by the particular case of heating veneer logs preparatory to peeling. The most obvious way of saving on heating is to avoid treating logs of...

Burhans, L.B.; Schreurs, B.G., 2013: Inactivation of the central nucleus of the amygdala blocks classical conditioning but not conditioning-specific reflex modification of rabbit heart rate. Heart rate (HR) conditioning in rabbits is a widely used model of classical conditioning of autonomic responding that is noted for being similar to the development of conditioned heart rate slowing (bradycardia) in humans. We have shown previously...