Where there is no “standard poly” as one might say, there are over a hundred possible variations on polyethylene resins that can be used. Each is engineered for a different end use. From a gallon milk jug to bread bags each has a very different use, but all using Polyethylene.
Some of the most common forms are: High Density Polyethylene (HDPE), Medium Density polyethylene (MDPE), Low Density Polyethylene (LDPE), Ultra Low Density Polyethylene (ULDPE), Metallocene, Fractional Melt, and Very Low Density Polyethylene (VLDPE).
With so many potential variations of Polyethylene film we can work with you to define your options for your next project, all while giving you the option of having us hold Inventory for you. Below are some of our offerings and where they are commonly used. Please contact us for just a quick question or to discuss your new project - we are listening!!
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Properties of Medium Density Polyethylene Film
Medium density PE has good drop resistance and good shock resistance. This material is less “notch” sensitive than HDPE and its resistance to stress cracking is better as well. It sits in between LDPE and HDPE in regards to melting point. When compared to the other grades, its role has decreased significantly with the introduction of linear grades. Often blended with HDPE and LDPE for a facing component. Suitable for a number of specialty packaging application such as lamitube, stand-up pouches, over-wrap films, milk pouches and lamination films where both stiffness and toughness are essential.
MDPE is much stiffer the LDPE to the touch. They offer higher dart impact, higher machine direction (MD) tear strength, but will still achieve the optic qualities of LDPE. Can be used for same applications as LDPE but will provide additional tear strength, and durability. A common use is in certain wire & cable coverings.
Will also provide a cost savings where you may be able to downgauge your packaging requirements to be able to use MDPE.
Plastic Film Additives and Treatments To MDPE Film
- Flame retardant – additive compounds to render a polymer fire resistant
- Color Pigments – color pigment concentrates that can be added
- Carbon Fillers – high concentration results in conductivity of the film
- UV Stabilizers – added to resist sunlight
- Slip/Anti-block Agents – added to improve film to film slipping and blocking
- Anti-Static – resistance to static buildup
- Silicone coated
- Corona treated
Application/Industry Area of Medium Density Polyethylene Film
TECHNICAL DATA FOR MDPE FILM
TENSILE STRENGTH, PSI
|1500-2000 (ASTM METHOD - D-638)|
ULTIMATE ELONGATION, %