Barrier Films: Product Categories
Barrier Films: Product Categories
Barrier Films: Product Categories
Product Categories
Whatever be the industry that a client belongs to, Vishakhas wide range of distinct products
has a ready solution waiting for the client. When it comes to the area of packaging, sky is the
limit for Vishakha.
Vacuum Pouch MAP (Modified Atmosphere packaging) packaging pouches, Nonvacuum , Gas Flush Pouches
Thermoforming film
Lamination film Barrier, non barrier & Specialty film (Anti-Fog Films)
products
are
gas barrier
bags.
They can
also
be
laminated
to
other
films
and
substrates
for
additional
barrier
functionality.
These films provide moisture protection in health care and pharmaceutical blister packaging and other industrial applications. They are also valued in
exotic military, aerospace, aircraft, and electronic applications. Barrier films are used to make different packaging products like
Packaging bags
Aluminum foil
Aluminum sheet
Packaging pouch
A vacuum insulated panel (VIP) is a form of thermal insulation consisting of a nearly gas-tight
enclosure surrounding a rigid core, from which the air has been evacuated. It is used in building
construction to provide somewhat better insulation performance than conventional insulation
materials.
By removing air from fiber, powder, or foam core materials VIPs achieve high thermal
performance at a fraction of the thickness of cut-to-fit insulation materials. VIP products are
made-to-fit architectural details, with specified service lives for floor, wall, and roof
constructions. Quality control of component manufacture is important.
A VIP uses the insulating effects of a vacuum to produce much higher thermal resistance than
conventional insulation. Conventional insulation produces an R-value of eight or less per inch
(fiberglass being towards the lower end and foam panels towards the higher end). VIPs are
commonly as high as R-30 per inch, and have achieved commercially viable levels of R-50 per
inch[1].
VIPs consist of:
Membrane walls, used to prevent air from getting into the vacuum area
Core material, used to hold the vacuum inside the membrane while preventing the
membrane walls from collapsing. (e.g.fumed silica, aerogel, glass fibers or foams)
Chemicals to collect gases leaked through the membrane or offgassed from the
membrane materials are added to VIP with glass fibers or foams cores, as core with
bigger pore size requires vacuum level lower than about 1 mbar during the planned
service life. (Getter)
The near-vacuum inside VIP's greatly reduces conduction and convection of heat. This is similar
to the way in which a vacuum flask works, but without the reflective metal coatings, as the core
material reduces infrared radiation.
VIPs offer very high R-value by thickness (30-50R value per inch compared with 5-8R/in for
various foams and a lower 2-3.54R/in for common fiberglass batting), but by cost and lifespan it
is less competitive. Compared to more conventional insulating materials VIPs have a high cost/rvalue ratio. Unlike fiberglass (although foam insulation does age), VIPs age as it is impossible to
completely keep air from filling the vacuum. As air leaks in and pressure of the panel normalizes
with its surrounding air its R-value deteriorates.
Although their higher cost compared with fiberglass and foam generally keep them out of
traditional housing situations, their spectacular R/in values make them useful in situation where
high insulation requirements or space constraints make traditional insulation impractical. (Foam
sheets are used over fiberglass often for the same goal of higher R/in, despite higher cost for the
same R value).