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Cellulosa ( Cellulosa rigenerata ) - Film   -   Informazioni sul Materiale


Buy Cellulosa Film on-line

Standard products are available in these forms
Fibra Film
Fibra Film
Common Brand Names:
Cellophane, Rayophane
 
General Description:  

All forms of cellulose degrade before they melt but natural cellulose can be regenerated by the xanthate process to manufacture fibres, commonly called rayon or viscose, and film, commonly called by its earliest brand name Cellophane®. The latter films are plasticised by glycols and water to overcome their brittleness and are transparent, colourless and of moderate crystallinity. They were very widely used for packaging but have been substantially replaced by synthetic thermoplastics, especially polypropylene.

They have very high permeability to moisture and, especially when dry, very low permeabiltiy to permanent gases. Their moisture content varies greatly with their environment reaching approximately 50% at 100% relative humidity. Not surprisingly, this causes many of their properties to vary considerably - so summarised values must be treated with considerable caution.

   
 

   

Dati Tecnici per   Cellulosa


Cellulosa Film - Prodotti Standard   Click here to display prices
AC321020Cellulosa Film,    
Spessore:0,021 mm, Coil width:250 mm
AC321030Cellulosa Film,    
Spessore:0,031 mm, Coil width:400 mm
AC321040Cellulosa Film,    
Spessore:0,042 mm
AC321088Cellulosa Film,    
Spessore:0,09 mm, Condizione:Pergamena vegetale, Rivestimento:Non rivestito
 
AC321090Cellulosa Film,    
Spessore:0,09 mm, Condizione:Pergamena vegetale, Condizione:Rivestito in silicone su entrambi i lati
Cellulosa Film - Prodotti Standard   Click here to display prices

Properties for Cellulosa Film

Property Value
Extension to break - Longitudinal % 18
Extension to break - Transverse % 55
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0,004-0,05
Permeability to Hydrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0,01-0,05
Permeability to Nitrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0,02-0,06
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0,004-0,04
Permeability to Water @25C x10-13 cm3. cm cm-2 s-1 Pa-1 approx 20,000
Tensile modulus - Longitudinal GPa 5
Tensile modulus - Transverse GPa 3
Tensile strength - Longitudinal MPa 120
Tensile strength - Transverse MPa 55

Standard products are available in these forms
Fibra Film
Fibra Film

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