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Topic: Cork Oak


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Oak

In the News (Fri 27 Nov 09)

  
  Cork Oak - Wikipedia, the free encyclopedia
The Cork Oak (Quercus suber) is a medium sized, evergreen oak tree in the section Quercus sect.
Cork Oaks cannot legally be cut down in Portugal except for forest management felling of old unproductive trees.
Hybrids with Turkey Oak (Quercus cerris) are regular both in the wild in southwest Europe and in cultivation; the hybrid is known as Lucombe Oak Quercus × hispanica.
en.wikipedia.org /wiki/Cork_oak   (344 words)

  
 Cork (material) - Wikipedia, the free encyclopedia
Cork material is a subset of generic cork tissue, harvested for commercial use primarily from the Cork Oak tree, Quercus suber, with Portugal producing most cork worldwide.
Cork contamination with harmless but foul-smelling trichloroanisole (TCA) is one of the primary causes of cork taint in wine.
Oak woodlands in Spain and Portugal, known as dehesas or montados, have been used to produce cork and graze livestock for hundreds of years, making them a haven for wild birds.
en.wikipedia.org /wiki/Cork_(material)   (639 words)

  
 Cork Institute of America--Harvesting Cork
Cork is the outer bark of an evergreen oak of the genus and species Quercus Suber (oak cork).
Forests of oak cork trees are carefully monitored and cultivated, and act as a renewable source for this remarkable material.
In the prime cork-growing region of Portugal, cork oaks and their harvest are protected by law in order to protect this valuable resource and ensure the quality of the harvest.
www.corkinstitute.com /harvest.html   (385 words)

  
 AMORIM Group - Natural Cork   (Site not responding. Last check: 2007-11-03)
The cork that is extracted from the oak-tree also plays an important role in the economical activity of this region, since it has a never-ending potential of applications: from wine industry, civil construction, to the sophisticated space industry.
Cork is natural, light, imputrescible, impervious to liquids and gases, flexible, resistant, it has great dimensional stability and is a thermal and acoustic insulator - it has a never-ending potential of applications.
The cork cell is made up of an irregular 14-sided polyhedron, with a minimum amount of solid material and a maximum amount of a gasesous mixture almost identical to air but free from carbon dioxide.
www.amorim-group.pt /ing/corticeira.html   (683 words)

  
 What Fernando Oliveira did not say about cork-oak DRAFT
The cork oak for the skeleton, and the pine for the planking.
The density of cork oak timber - a paradox
This study of cork oaks and their use in shipbuilding has inevitably suffered from the fact that it is now well over a century since their use ceased in significant shipbuilding, and a quarter of a millenium since the last trees to be used were actively nurtured.
home.clara.net /rabarker/Aveiro-txt.htm   (5224 words)

  
 Cork Quality Council- Natural Cork Forest - CQC Natural Wine Corks
Cork is harvested in a steady cycle that promotes healthy growth to the tree over its expected lifespan of over 200 years.
Typically, virgin cork is not removed from saplings until the 25th year, and reproduction cork (the first cycle) may not be extracted for another 9-12 years.
As soon as it is evident that the cork is being stripped too early or too late in the season the stripping is brought to a halt, a year’s delay in cork extraction is preferred to damage to the tree.
www.corkqc.com /cqfrst.htm   (513 words)

  
 The cork industry in Portugal
Cork oak stands extend throughout the country although the intensity of production and quality of the cork vary in the different producing zones.
Cork is an extremely light, compressible, elastic and flexible material, practically impervious to moisture, and to liquid and gaseous substances.
Cork wool is produced for cushions and mattresses and granulated cork employed chiefly as insulating material in ship-building, as a protective packing for fruit and eggs, and as tubing for plastic substances.
www.uwec.edu /geography/Ivogeler/travel/Portugal/cork-article2.htm   (638 words)

  
 Llosent & Forschner - From Cork Oak to Bottle Cork
The cork oak is an evergreen, indigenous to the western Mediterranean region.
Cork bark can be stripped for the first time, only after about 25 years.
From one ton of high-quality cork wood approximately 300 kilos of cork stoppers are produced, while the remainder is "waste" which is used for manufacturing pressed cork and industrial cork (flooring, gaskets, insulation etc.).
www.llosent.at /e/knowhow/entstehung.html   (438 words)

  
 Cork Oak Trees
Cork comes from the bark of Cork Oak trees and is harvested in sheets (about every 10 years) from the tree when the bark is thick enough, which generally occurs at 25 years.
The Cork Oak is native to the Mediterranean region, where most of the world's commercial supply of cork is obtained, though the tree has been introduced into warmer regions of the United States.
Cork Oaks have a long life span and those planted in 2006 should still be thriving when Lodi celebrates its bicentennial in 2106.
www.lodi.gov /press_releases/html/cork_oak_trees.htm   (384 words)

  
 cork on Encyclopedia.com   (Site not responding. Last check: 2007-11-03)
Cork is a specialized secondary tissue produced by the cork cambium of the plant (see meristem, bark).
Commercial cork, obtained from the cork oak, is buoyant in water because of the presence of trapped air in the cavities of the waterproof dead cells.
Cork's tainted future: the centuries-old marriage of cork and wine is in dire straits, as producers turn to other forms of bottle closure in order to reduce the prevalence of spoilt wines.
www.encyclopedia.com /html/c1/cork.asp   (634 words)

  
 WECork - Your Cork Specialists - Cork Info
Cork is the bark of an oak tree known botanically as QUERCUS SUBER.
As early as 2,500 BC cork was being used for fishing floats in ancient Egypt.
To purchase cork bark is not an easy task as the quality not only varies from forest to forest as well as from tree to tree, but even the same tree may produce varying degrees of quality cork depending on its exposure to sunlight.
www.wecork.com /corkinfo.html   (574 words)

  
 What is Cork   (Site not responding. Last check: 2007-11-03)
The cork oak, Quercus suber, grows in the sunny south of Portugal, Spain, and North Africa.
Cork stripping is the process of removing the bark of the cork tree.
Natural cork is used as the cork closure since it allows the wine to "live" and mature in the bottle.
www.jelinekcork.com /what_is_cork.html   (588 words)

  
 Cork Flooring frequently asked questions
Cork is made from the bark of the cork oak tree, the “Quercus suber.
After the bark is stripped from the cork oak tree, they are stacked into piles and left to “season” in the field for one year.
Cork is naturally suitable for all areas of the house especially kitchens, bathrooms and entry areas where moisture could pose a problem for other floor coverings.
www.nfpimports.com /faq.html   (645 words)

  
 CHAPTER 6
Cork is the soft tissue found in the inner bark of the cork oak (Quercus suber - family Fagaceae), an evergreen oak that occurs in the western Mediterranean region.
Cork oak is one of the commonest indigenous trees in Portugal where it is found throughout the country.
Cork is a plant tissue composed of dead cells, generally 14-sided polyhedrons, and an intercell space filled with gas virtually identical to air but lacking carbon dioxide (CO It has a honeycomb-like structure that has a minimal quantity of solid matter and a maximal quantity of gaseous matter.
www.fao.org /DOCREP/005/Y4351E/y4351e0a.htm   (6503 words)

  
 BuildingGreen.com - EBN 5:1 - Cork Flooring   (Site not responding. Last check: 2007-11-03)
Cork flooring is durable, it provides acoustical and thermal insulation, it cushions the foot, it is resistant to moisture damage and decay, it is fairly easy to clean, and it is harvested from trees in a sustainable manner.
Cork derives its remarkable properties from a cellular structure of hollow, polyhedral (14-sided) cells with extremely strong, flexible cell walls that are waterproof and airtight.
The largest cork oak in Portugal, estimated to be 200 years old, produced 1,200 kilos (2,600 lbs) of cork in 1992.
www.buildinggreen.com /products/cork_flooring.cfm   (1243 words)

  
 Cork and the cork oak system
The economic exploitation of cork is vital for the maintenance of the cork oak system, and a key to "saving" the species is therefore to conduct effective promotional activities.
A second aspect is the clear, demonstrated importance of the cork industry in maintaining the ecological stability of the fragile and threatened Mediterranean ecosystem.
Cork and the cork oak have occupied a key role in Mediterranean forest development.
www.fao.org /docrep/x1880e/x1880e08.htm   (1415 words)

  
 Howstuffworks "Where does cork come from?"
Cork is actually made of water-resistant cells that separate the outer bark from the delicate interior bark.
The cork is stripped off during June, July and August using a long-handled hatchet to cut sections out of the bark.
Washing the cork -- The cork slabs that are cut away from the tree are boiled and the rough outer layer of the bark is stripped away.
www.howstuffworks.com /question550.htm   (464 words)

  
 Villani Leonello - Natural cork fabric, natural fiber fabric and components for footwear
Cork is the outer bark of the cork oak tree known botanically as QUERCUS SUBER.
This cork is called “virgin cork”, as it is produced by the original phellogen and is of poor industrial quality due to the numerous furrows and cracks caused by the intense radial growth tensions.
Cork’s first recorded use as a stopper and its most common use today was by the Phoenicians thousand of years ago.
www.villanileonello.com /CORKFABRICS.htm   (903 words)

  
 Cork Flooring
Cork is made of millions of cork cells - each cell functioning as a miniature sound and thermal insulator, as well as a miniature pressure and shock absorber.
In cork oak plantations the first cork bark will not be harvested from a tree until it is 25-30 years old, as only then it is considered a fully grown tree.
Cork's structure is very similar to that of a honeycomb: each square centimeter is composed of 40 million cells.
www.douglashardwoodfloors.com /cork_flooring.htm   (1112 words)

  
 The Columbia Encyclopedia, Sixth Edition: cork oak @ HighBeam Research   (Site not responding. Last check: 2007-11-03)
CORK OAK [cork oak] name for an evergreen species of the oak genus (Quercus) of the family Fagaceae (beech family).
The bark of the tree is stripped off (about every 10 years) and then processed for shipment as commercial cork.
Cork oak is classified in the division Magnoliophyta, class Magnoliopsida, order Fagales, family Fagaceae.
www.highbeam.com /library/doc0.asp?DOCID=1E1:corkoak&refid=ip_encyclopedia_hf   (163 words)

  
 Cork Flooring
Cork is literally the bark of a variety of Mediterranean oak tree.
Cork, the bark of a variety of Mediterranean oak tree, has been used as flooring for a century.
Cork floors can last for decades and the material is biodegradable at the end of its useful life.
www.ecoact.org /Programs/Green_Building/green_Materials/cork.htm   (528 words)

  
 Wine Corks, Capsules, Oak Barrels, Tanks & Oak Products | Cork Supply USA
Cork Supply's proprietary washed range of natural corks is an excellent alternative to traditionally washed corks.
Cork Supply, back in 1994, became one of the first suppliers to introduce the 1+1 cork to the US market.
Cork Supply is a major distributor of sparkling wine corks to the US wine industry.
www.corksupplyusa.com /wine-corks-packaging.htm   (94 words)

  
 WE Cork Flooring from Longleaf Lumber
The Cork Oak grows in the forests of Mediterranean countries, primarily in Portugal and Spain.
After corks for wine bottles are removed from the bark, the remaining material is ground up, bound with urethane binders and molded to obtain the desired density under pressure and heat.
Because cork is a wood product, it is subject to the normal behavior of expansion and contraction, but these changes are less noticeable than those that occur with wood flooring.
www.longleaflumber.com /cork.cfm   (1319 words)

  
 Natural Flooring
Cork improves air quality, since it cannot absorb or release dust into the air.
Cork is a unique natural product with characteristics unmatched by any other material.
Cork is a bi-product from the bark of a Cork Oak Tree.
www.naturalbamboo.com /cork.htm   (291 words)

  
 22. Cork Oak   (Site not responding. Last check: 2007-11-03)
This species is the famous Mediterranean native from which people obtain cork; strip off the spongy bark, and it grows back better than before--a great boon for humanity.
Like many oaks, this one is evergreen, with rather scurfy, dull leaves, prickly and often cupped.
The vigorous "Scarlet Sentinel" maples near this rare oak are believed to be a hybrid of red and silver maples, two common species from eastern North America.
www.washington.edu /home/treetour/coak.html   (105 words)

  
 Quercus suber (Cork Oak)   (Site not responding. Last check: 2007-11-03)
Cork Oaks are indigenous to the Mediterranean region where they occur in open woodlands on hills and lower slopes.
They form a thick cork bark which is harvested mainly for the manufacture of wine bottle corks although the cork also makes a good heat and electrical insulator so is used for gaskets in engines and for insulative materials used in home interiors.
Cork Oaks are grown mainly in Portugal where there are over 60 square kilometers of cork orchards.
www.museums.org.za /bio/plants/fagaceae/quercus_suber.htm   (276 words)

  
 Globus Cork / Cork Floor .com - Cork Flooring and Cork Wall Tiles - Cork Tiles - Cork Floors - Cork Floating Floor ...
Perfect for green construction, cork oak is the only tree whose bark regenerates itself after harvest, leaving the tree unharmed.
Cork's cellular structure is made up of millions of tiny, sealed air-like pockets which provides many of the benefits of cork.
Globus Cork tiles are coated with a premium water-based finish and are highly resistant to stains or water damage.
www.corkfloor.com /faqs.html   (1887 words)

  
 "Cork - Fly Angler's OnLine"
There are many facets of the cork industry, most people don't even realize that cork is the bark of Cork Oak trees that grow almost exclusively in one region of the world.
This cork is called virgin cork and does not come away by itself; it is hard, and unsuitable for cork stoppers.
The expression "unmasking the virgin cork" is particularly appropriate since that part of the tree, which is revealed when the virgin cork is removed, is called the mother.
www.flyanglersonline.com /features/rodbuilding/cork.html   (732 words)

  
 WWF - Preserving Portugal’s cork heritage for the next generation
However, in the Algarve in the south of Portugal, where cork plantations are small, growers of cork oak (Quercus suber) are facing an uphill struggle for survival.
In Monchique in southern Portugal, one of the richest natural cork oak habitats in the country, farmers have done the math and have been readily converting to such fast-growing species as eucalyptus…but not without a cost.
There is a growing interest from cork producers to comply with FSC criteria, which will not only benefit the cork oak trees themselves, but the intact forests that provide habitats for the endangered Iberian lynx and Bonelli eagle.
www.panda.org /news_facts/newsroom/news/index.cfm?uNewsID=22370&uLangID=1   (1997 words)

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