Millstone
Sea Mixes
man at work
Trust
construction
Man with a Burning Ambition
Three Windows on the TS 'Queen Mary'
new roof
Covilhã
#2 destruction before construction
show must go on!
Alcoa
PIP - Escaroupim - Closing the cycle
Les vaches du village
Tradition.
Sophisticated Engineering - PiP please
wall fabrics (pip)
José Malhoa
Fisherman
HFW - Lucky Charm
Sines
Old Fashion
Gone fishing
finishing touch
Porto
PS 'Waverley' Being Tied up at Helensburgh Pier
St Andrews, Starbucks, Market Street
St Andrews, Fixing the Fountain
St Andrews, Fixing the Fountain
HFriday
A Summer to remember
Home
window replacement (pip)
Workmanship
Tunisi : Porte de Bhar - l'ingresso principale all…
Under Pressure
HFF - Toothache
Golden Hour
#49 someone up a ladder
Mother and Father gone fishing . . .
Life
D. Antónia
Painel
One man and his work: night fishing.
Location
See also...
See more...Keywords
Authorizations, license
-
Visible by: Everyone -
All rights reserved
-
169 visits
Cortiça - Cork
Quercus suber, commonly called the cork oak, is a medium-sized, evergreen oak tree in the section Quercus sect. Cerris. It is the primary source of cork for wine bottle stoppers and other uses, such as cork flooring and as the cores of cricket balls. It is native to southwest Europe and northwest Africa. In the Mediterranean basin the tree is an ancient species with fossil remnants dating back to the Tertiary period. The cork planks (from the third harvesting) are cooked in clean boiling water after the period of stabilization or rest. The boiling process lasts for at least one hour. The objectives of boiling are:
1. Clean the cork;
2. Extract water-soluble substances;
3. Increase its thickness, thereby reducing density;
4. Make the cork softer and more elastic.
Before boiling, the cork cells are compressed in an irregular fashion, but during this process, the gas contained in the cells expands. As a result, the structure of the cork becomes more regular and its volume increases by around 20 per cent.
Image of 1955, from Mundet of Seixal, onboard “fragatas” the traditional cargo boat of the time, the packs of cork from last year and ready to be transformed, are carried to Lisbon and then shipped worldwide, from the USA to Japan.
1. Clean the cork;
2. Extract water-soluble substances;
3. Increase its thickness, thereby reducing density;
4. Make the cork softer and more elastic.
Before boiling, the cork cells are compressed in an irregular fashion, but during this process, the gas contained in the cells expands. As a result, the structure of the cork becomes more regular and its volume increases by around 20 per cent.
Image of 1955, from Mundet of Seixal, onboard “fragatas” the traditional cargo boat of the time, the packs of cork from last year and ready to be transformed, are carried to Lisbon and then shipped worldwide, from the USA to Japan.
vero, J.Garcia, Marco F. Delminho, buonacoppi and 9 other people have particularly liked this photo
- Keyboard shortcuts:
Jump to top
RSS feed- Latest comments - Subscribe to the comment feeds of this photo
- ipernity © 2007-2024
- Help & Contact
|
Club news
|
About ipernity
|
History |
ipernity Club & Prices |
Guide of good conduct
Donate | Group guidelines | Privacy policy | Terms of use | Statutes | In memoria -
Facebook
Twitter
Admired in:
www.ipernity.com/group/tolerance
Cheers Annemarie.
Bonne et agréable fin de semaine.
Thank you for posting
www.ipernity.com/group/magicalsunlight
Excelente texto, Zé
Sign-in to write a comment.