 Recycled
Polyolefins for Injection Molding
Choosing the right materials for your injection molding process is
critical to the success of your project. At NPI Plastic, we understand how it
important it is to make an informed decision when it comes to choosing the
right resin for your injection molding process. We recycle
polyolefins for the injection molding industry. Our products include high and
low density polyethylene: NPI – 04HDPE Mixed Color,
NPI – 01LL/LD Mixed Color and
polypropylene: NPI – 10PP212 Mixed Color. All our
products are recycled from plastic post industrial scrap and are ideally
suited for the injection molding process.
We can formulate recycled polyethylene and polypropylene blends that
perform the same as or similar to prime or virgin resins. Each blend can be
custom formulated for your process and to the performance requirements of
final product application. If you have any questions about choosing the right
resin for your project, please feel welcome to contact us with any questions
you might have. Below we have put together a brief buying guide for choosing
the right resin for injection molding.
What is Injection Molding
One of the most popular methods of making a plastic product or shaping
plastic resins is a process called injection molding. Using
large injection molding machines, the molding process involves taking a
polymer or a plastic resin from a solid state, heating it and changing it to
a semi-liquid state, forming it into something, and cooling it back to a
solid state.
In the first stage, a plastic material is put into a hopper, which feeds
into a heating chamber. A plunger pushes the plastic through the heating
chamber where the material is then softened into a fluid state. At the end of
this chamber, the resin is forced into a closed mold. Once the plastic cools
to a solid state, the mold opens and the finished product is ejected. This
process can be used to create untold types of products including toys,
everyday items we use, consumer products, packaging materials and and even
automotive parts.
Our Recycled Resin Properties
A major component of our plastic recycling service involves knowing what
resins to choose for the injection molding process. Key properties of our
recycled plastic as a plastic material for the injection molding process
include its melt index, density and izod impact properties. They are key
indicators of what the melt strength and flow will be for processing. If
you're looking for resins for your injection molding process, then a higher
melt index will mean a faster melt flow which helps to fill the mold cavities
in shorter period of time. The properties of our products are listed below:
|
LL/LD
RESIN PROPERTIES
|
ASTM
TEST
|
UNIT
ENGLISH (METRIC)
|
NOMINAL
VALUES
|
|
Melt Index
|
D1238
|
gm/10 min
|
2 to 10
|
|
Density
|
D1505
|
gm/cm3
|
.918 to .930
|
|
-
|
-
|
-
|
-
|
|
HDPE
RESIN PROPERTIES
|
ASTM
TEST
|
UNIT
ENGLISH (METRIC)
|
NOMINAL
VALUES
|
|
Melt Index
|
D1238
|
gm/10 min
|
4 to 15
|
|
Density
|
D1505
|
gm/cm3
|
.945 to .960
|
|
-
|
-
|
-
|
-
|
|
PP
RESIN PROPERTIES
|
ASTM
TEST
|
UNIT
ENGLISH (METRIC)
|
NOMINAL
VALUES
|
|
Melt Flow
|
D1238
|
gm/10 min
|
7 to 15
|
|
Izod Impact Notched
|
D256
|
ft lb/in (J/m)
|
2 (107)
|
 Contact
us today: Toll Free: 1.800.463.6169
The Ownership and Management
Nexcycle Plastics Inc.
|
