Degassing Plastics with Edwards Vacuum
Vacuum pumps play an important role in
degassing plastics to remove water vapour, toxic & corrosive gases and impurities
that affect the quality of the product. Polymer melts are degassed at low
pressures using vacuum pumps on extruders, when being compounded into different
grades with additives and colourants and while being formed.
Edwards’ dry vacuum pump packages are
simple, environmentally-friendly, reliable, flexible and cost-efficient. They
are easy to service and install, with low cost of ownership. No matter how
different your application is, Edwards has a solution.
Depending on your vacuum needs, our experts will
select from our comprehensive range of pumps to deliver
the right vacuum system for your process.
Recycling Plastics with Edwards Vacuum
Recycling plastics is not only better
for reducing carbon footprint, it also means that less of it ends up in
landfill, rivers, seas and oceans. Vacuum systems help to remove entrained
gasses and aid the reaction in solid state recycling of PET, HDPE, LDPE, PC,
ABS and even in liquid state recycling process for PET.
Handling the waste gases and materials
removed during degassing can be troublesome for some vacuum pumps, however Edwards
vacuum packages provide reliable pumping in PET recycling processes and are
easy to service.
Edwards vacuum solutions with their
proven technologies are robust and reliable, even in difficult applications
like bottle-to-bottle PET recycling which requires efficient removal of
contaminating gases. Recycled PET is extruded into pellets called rPET pellets and
converted into new PET bottles by the extrusion blow moulding process.
Our experts will select the right
vacuum system for your recycling needs from our comprehensive range of vacuum
Compounding & Masterbatch Processing
Compounding with Edwards Vacuum
Compounding of plastic requires several
critical conditions to be achieved for a homogenous blend of raw materials and
additives. During extrusion, different zones are heated according to the
properties of the resins and uniform pressures and temperatures must be
maintained in each zone. Edwards pumps provide stable vacuum that is required during
the degassing of these zones to achieve the right quality of the compounded
Masterbatch made with heat sensitive
additives, pigments & resins, need repeatable vacuum to maintain thermal
stability and degassing of intermediates and end-products. Edwards’ vacuum pumps
are flexible providing the right vacuum levels and ensure you get a repeatable
performance every time.
Our experts will help you to select
the right vacuum package for your Compounding and Masterbatch needs.
Film and Sheet Processing
Manufacturing Packaging Plastics with
Edwards Vacuum Solutions
A wide variety of plastics, mainly
polyethylenes (HDPE, LDPE, LLDPE) are used for packaging. Single layer sheets
and multilayer (or laminated) film structures are used as a barrier for
industrial, agricultural and consumer goods packaging.
Edwards vacuum packages offer stable
and uniform vacuum for film and sheet production and are designed to handle
various degassing stages for different polymers and polymer grades. Edwards vacuum systems can also handle waste
gases from less commonly used polymers including PP, PA and EVOH giving you
ultimate flexibility in your process.
Our experts will help you choose the
right vacuum package for your process.
Vacuum forming with Edwards Vacuum
Vacuum formed products are all around
us and play a major part in our daily lives, such as chocolate packaging trays,
suitcases and even your car dashboard. The process involves heating a plastic
sheet to a temperature, stretching it on a single surface mould and then
forming it by applying vacuum to the mould. For advanced and more detailed
forms, a steady and stable vacuum is a must.
vacuum packages offer reliable and stable vacuum on the mould which is
essential for this process. Our experts will help you choose the right
vacuum package according to the polymer you use and your process requirements.
Polymer & Bio-based Plastics Processing
Enabling Plastics Production with
Edwards Vacuum Solutions
Plastics derived from natural and
renewable sources reduce emissions and dependency on fossil fuels. Bio-based
polymers, like polylactic acid (PLA), derived by fermentation of crops, are
manufactured by a direct or an indirect lactide intermediate polymerisation
process. Vacuum is essential to initiate and aid the reaction as well as to
extract the untreated monomer.
Edwards’ vacuum packages provide rough
to high vacuum with steady and reliable pumping speeds for both batch and
continuous processes. Whether you are planning a new installation or upgrading
an existing system, our application specialists can design the right vacuum
solution for your polymer production.
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