FAQs
- 1 Is optical density a synonym of barrier?
- Not necessarily, since pin-holes in metallized films directly affect the films’ barrier even when the optical density measure is higher than 2.
- 2 Are surface tension and ink adherence correlated?
- Surface tension and ink adherence are different properties normally correlated in polyolefine films such as CPP and BOPP, but are not consider cause and effect.
- 3 What is ‘hot tack’?
- It makes reference to the hot seal resistance from a material until it completely solidifies. This property tends to be the limitation in seal for high speed machines.
- 4 What is the difference between static and kinetic coefficient of friction?
- Static and kinetic coefficients are an index of slip measure and directly correlated. Static coefficient measures the strength to break inertia, while kinetic measures the average force needed for displacement.
- 5 What is the correlation between corona treatment and superficial tension?
- Corona treatment is a surface oxidation process through electric shock to improve film adherence while increasing its superficial tension. Note that surface morphology tends to change over time and, accordingly, so does surface tension.
- 6 With what certifications do we guarantee our products?
- Our certifications: ISO 9001, FSC 22000.
- 7 What range of thickness can your technology produce?
- BOPP from 10 µ to 100 µ, BOPET from 8 µ to 75 µ , CPP from 15 µ to 100 µ, BOPA from 10 µ to 25 µ, COATING from 6 µ.
- 8 What does high barrier film means?
- Conventionally barrier films measure water vapor and oxygen permeability. We have metallized high barrier films in BOPP, BOPA and CPP. For medium barrier, we have our transparent BOPA films.
- 9 What type of treatment can Opet films have?
- Corona and chemical treatment with different coating such co-polyester, modified acrylic and others.
