1. The Differences Between Polystyrene, Polypropylene and
Vinyl in CD Packaging
Plastic disc packaging is typically produced of a single of three different kinds of plastic:
polystyrene, polypropylene or vinyl. Every of these supplies has its own unique set of
rewards and down sides, so let's take a nearer appear at each 1.
Polystyrene PVC Foam Board Production Line
Regular Compact disc containers and trays are typically made of polystyrene, an economical
and quite rigid plastic that can be cast into molds with really complicated depth. Polystyrene
can be crystal-clear or colored and opaque. In phrases of clarity, there are couple of plastics
which match polystyrene and none that are inexpensive adequate for disc packaging. This
clarity has produced polystyrene a beloved amid put up generation pros, but also causes the
case's frailty - especially about the hinges, which will crack if the circumstance is dropped.
"Polystyrene doesn't consist of any rubber," explained Polyline COO Michael Schlobohm.
"Rubber is what helps make plastics pliable, but it also makes plastics cloudy. PVC Foam
Board Machine"
When picking a polystyrene circumstance, you should initial consider the volume of plastic
the scenario includes. Circumstances that consist of much more plastic hold up a small
greater throughout shipping, but are inclined to be a lot more pricey. If you are packaging
your discs on an automated line, you are going to want a more substantial case that is made
up of a lot more plastic simply because it has greater tolerances. Yet another issue to take
into account is how your distributor offers the discs for delivery. Most of Polyline's
polystyrene circumstances are accessible with a "double box" option. The further box gives
the shipment a tiny much more balance and has been recognized to decrease breakage.
Due to the fact of Polyline's liberal breakage plan, several of our consumers decide on the
most low-cost options (lighter in weight Cd cases inside a solitary carton) and purchase
further quantities of their Cd instances, anticipating breakage in the course of delivery.
"For some of our customers, price is the major factor in their press packaging choices," said
Ray Kaiser, Polyline's marketing and advertising director. "For these buyers, dealing with
returning Disc situations that may possibly have damaged in the course of transport is a
small inconvenience. That's why we supply two packing possibilities."
There are some distributors who double box all their outgoing shipments, but the further
packaging charges are mirrored in their expenses for each piece. With Polyline's technique,
explained Kaiser, buyers can see the extra costs relevant to double packaging and make an
knowledgeable decision primarily based on their very own demands and priorities.

2. Polystyrene is recyclable but, in several locations, it really is nonetheless difficult to uncover
a recycling center that will settle for polystyrene. (To see if there a recycling or re-use station
around you that accepts polystyrene, verify out http://earth911.org.)
Polypropylene
Polypropylene is a rugged and somewhat rigid plastic. Most common DVD situations are
made of polypropylene and so are several of our substitute Disc instances (this kind of as the
SLIMpak and CShell cases). The hinges of these goods are noticeably more tough than the
hinges of polystyrene packages. Polypropylene is accessible in a assortment of hues, each
opaque and translucent, even though nothing as distinct as polystyrene. That is simply
because polypropylene has rubber in it, which helps make packaging produced of this
material pliable.
There are several polypropylene alternatives to the traditional polystyrene box. We believe
the most promising is the Poly jewel box (Product # MPPJBX-2 hundred), which has the
same measurements as the common jewel box but is far more resistant to breakage. We
tested a variety of printed inserts and discs inside this box. Although the box is noticeably
significantly less crystal clear than its polystyrene counterparts, we feel it appears pretty darn
good.
Yet another benefit of polypropylene packaging is that it is both recyclable and (numerous
occasions) recycled. Check the item description of your beloved polypropylene packaging to
establish if it has recycled content material. Usually, if a polypropylene product is produced of
one hundred% virgin material, this sort of as the Amaray brand DVD scenario, it is noted in
the item description. This creates a situation that is heavier and more robust than instances
which consist of recycled components. It also generates a circumstance that is more costly to
create.
If it has a combination of recycled and virgin components, it may state so in the description,
but we do not place in the proportion of recycled materials a item is made up of. That is due
to the fact the quantity of virgin to recycled materials tends to fluctuate. An additional
fascinating reality about recycled polypropylene cases is that they have a distinctive scent -
type of like burnt rubber. The a lot more recycled content a polypropylene DVD case consists
of, the much more obvious that scent becomes.
Vinyl WPC Foam Board Machine
Vinyl (also referred to as PVC or Polyvinyl Chloride) is one of the most frequently utilised
plastics in the globe. Vinyl can be made into a range of translucent and strong colors.
In its native kind, vinyl is a extremely rigid plastic. Softer, much more pliable, versions of the
material can be developed, even so, by adding a plasticizer this sort of as rubber, which

3. makes it possible for the vinyl's polymer chains to slide in opposition to each other. Some
goods, this sort of as Polyline's vinyl sleeves and envelopes, are produced exclusively of the
softer types of vinyl. Other individuals, this kind of as our vinyl albums, have the two rigid and
pliable vinyl.
The far more pliable varieties of vinyl are, even so, prone to cracking when exposed to
intense alterations in temperature. These fluctuations in temperature lead to the vinyl to
expand and agreement, which could cause cracking. This difficulty can be avoided by
enabling your vinyl merchandise to slowly return to space temperature before making use of
it. Leaving the vinyl items in their circumstances (in the area they will be employed) for 24- to
48-hours prior to utilizing them, supplies vinyl packaging with sufficient time to become
acclimated to area temperature. PVC Foam Board Production Line.
Vinyl is a really robust plastic materials and, not like other plastics, vinyl is comparatively
easy to recycle. Due to the fact of these two aspects, vinyl plastic products are viewed as a
lot more environmentally helpful than other elements.