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Cork is the outer bark of an evergreen oak known by the Latin name Quercus (oak) Suber (cork).
The Romans, made beehives out of cork, because of its low heat conductivity.Frontrow Movies brings you a collection of the best full movies that can be found online on Youtube, Dailymotion, Facebook and Internet Archive. Bean wins a trip to Cannes where he unwittingly separates a young boy from his father and must help the two come back together.Comedy, Action, Drama, Horror or Science Fiction, you can watch it all here. On the way he discovers France, bicycling, and true love, among other things.~Cork’s bubble-form structure and natural fire retardant make it suitable for acoustic and thermal insulation in house walls, floors, ceilings and facades.~The Cork Oak is unrelated to the “cork trees” (Phellodendron), which have corky bark but are not used for cork production.If the product is of high quality it is known as “gentle” cork (Portuguese cortiça amadia, but also cortiça secundeira only if it is the second time; Spanish corcho segundero, also restricted to the “second time”), and, ideally, is used to make stoppers for wine and champagne bottles.
The workers who specialize in removing the cork are known as extractors.
The Romans employed corkwood planks in the construction of their homes, a tradition to today in North Africa. Though the material seems simple in the sense that it needs no additives outside of its natural chemical compounds, cork is actually a highly complex material in its makeup, a complete package in and of itself.
Cork has an incredibly unique physical makeup, as it is composed of closed cells containing air, suberin, and ceroids.
An extractor uses a very sharp axe to make two types of cuts on the tree: one horizontal cut around the plant, called a crown or necklace, at a height of about 2-3 times the circumference of the tree, and several vertical cuts called rulers or openings.
This is the most delicate phase of the work because, even though cutting the cork requires significant force, the extractor must not damage the underlying phellogen or the tree will be harmed.
When the tree reaches 25–30 years of age and about 24 in (60 cm) in circumference, cork can be removed for the first time.