A
coated film is a thermoplastic film which has a substantially
continuous, adherent coating on at least one surface, wherein the
coating includes a polymeric binder and nano-scale particles. In
preferred embodiments, the coating includes a polymeric binder and
silicate particles formed on a base substrate layer that includes a
polyolefin selected from the group consisting of homopolymers,
copolymers, and teropolymers.
Coated films and packaging
Coated films provide better protection from oxygen, light, water and
aroma barriers, performance on packaging machines in terms of seal
integrity, speed, efficiency, slip, friction, and hot tack, and give a
glossy appearance. These films are extensively used in fields such as
digital electronic materials, semiconductors, and medical materials.
These films are widely used in
- Electronic packaging
- Industrial packaging
- Food packaging laminates
- Pharma packaging products
Types of coating
Types of coating used in films are as follows:
- Acrylic coating offer an excellent surface
for printing and exceptional gloss and haze characteristics,
combined with very good aroma protection.
- Low temperature sealing coating is a coating
especially designed for horizontal form, fill and seal lines, which
allows machines to run at very high or low speeds, while keeping
constant seal temperatures.
- Polyvinyl chloride coating provides superior
barrier properties and offers excellent optics and good machine
efficiency.
- Polyvinyl alcohol, with its excellent oxygen
barrier is typically used to protect food products that are
sensitive to oxidation.
- Bacteriocin coated film slowed down
significantly the microbial quality changes of the packaged oyster
and ground beef at both temperatures. These films have shown a
potential to be used as packaging films for extending shelf life of
the fresh chilled foods.
- Low temperature sealing coating is a coating
especially designed for horizontal form, fill and seal lines, which
allows machines to run at very high or low speeds, while keeping
constant seal temperatures.
Types of Coated Films
Coated films are mainly classified as:
- Double Coated Film- These films have pressure
sensitive adhesives coated on both sides for instant bonding of two
surfaces. They bond well to engineering plastics and metals.
- Single Coated Film- These films have clear
adhesives coated on one side of the film. They provide a high bond
level to many different surfaces.
