Pressed Wood


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Wood, Pressed

 

a building material, wood subjected to compression at right angles to the grain under pressures as high as 30 meganewtons per sq m (300 kilograms-force per sq cm). Pressed wood has a density of 1,200 to 1,450 kg per cu m; depending on type of pressing, it is designated as compressed from one side or two, or as compressed to contour. One-sided compression is done by pressing beams of wood in a single direction across the grain, and two-sided compression involves pressing in two directions. The second method provides greater density. Pressing to contour is done by pressing a cylindrical stock of wood into a metal cylinder of smaller diameter. The breaking point for pressed wood under static bending or compression with the grain, as well as the hardness of the butt-end surface, is two to three times that of natural wood. Pressed wood replaces ferrous and nonferrous metals and textolite in industry and is used to make loom picker sticks, sliding bearings subject to abrasive wear, and other products.

REFERENCES

Khukhrianskii, P. N. Pressovanie drevesiny, 3rd ed. Moscow, 1964.
Spravochnik fanershchika. Moscow, 1968.

A. N. KIRILLOV

References in periodicals archive ?
Made from pressed wood, laminate is durable and resists scratches, moisture and wear and tear making it a great option for rooms prone to spillages such as dining rooms.
EKH last said that one of its subsidiaries would build a factory for pressed wood production with EGP 2bn in investments.
2018 2017 2016 We use plastic, corrugated, 15% 19% 19% pressed wood or metal rather than wood We use wood pallets that we own 24% 16% 18% We use a pallet pool 5% 3% 6% We have our pallets treated 44% 43% 49% Other 12% 11% 12% We don't do anything different 18% 25% 16% Source: Peerless Research Group (PRG) Note: Table made from bar graph.
This material is also called pressed wood, engineered wood and MDF.
Bookcases and other furniture made of porous pressed wood are usually not salvageable, while non-porous objects like glassware and ceramics are more likely candidates for recovery.
Formaldehyde levels vary with type of construction materials, presence of pressed wood products, type of carpeting and flooring material, and efficiency of heating, ventilating, and air conditioning (HVAC) systems.
Properties of hot pressed wood. Mokuzai Gakkaishi 26:581-586.
Sources of formaldehyde include pressed wood products - such as particle board, hardwood, plywood panelling and MDF, paints, adhesives, varnishes and floor finishes and household products such as wallpaper, cardboard and paper products.
Nelson pressed Wood to say the rate of payment errors the OIG had identified in Carousel Pediatrics' records, stressing that Doug Wilson, inspector general at the Health and Human Services Commission, testified that the average payment error rate for unjustifiable claims investigators have identified is above 90 percent.
Junior Achievement Namibia Country Director, Johanna Cloete said "Phineas saw the need of people in Area 7 for pine wooden beds, chairs and pressed wood cabinets.
People are buying pure papers printed on pressed wood but they are equally getting their news in many other forms."
The millions of pallets that contain pressed wood are also dangerous for repurposing because most engineered wood contains formaldehyde, which is a known carcinogen that eco- and health-conscious people try to avoid.