Polyethylene is a kind of plastic derived from petroleum polymers. It’s one of the most durable types of plastic in existence today. It’s also inexpensive and highly chemically resistant. This means it can survive a variety of environmental hazards. (https://bettysco.com) Because of these characteristics, polyethylene packaging is widely considered superior to other packaging materials.
There are three types of polyethylene commonly used in the packaging industry: High-Density Polyethylene (HDPE), Low-Density Polyethylene (LDPE), and Linear Low-Density Polyethylene.
HDPE offers low cost, easy processing, a good High-Density Polyethylene Clear BottleHigh-Density Polyethylene Oil Bottle moisture barrier, and the ability to produce an opaque packaging product.
: HDPE in Packaging industry offers excellent puncture resistance, low stretch, reduced tearing, and moisture protection. High-Density Polyethylene film can come in a variety of thicknesses depending on the need. Most HDPE extruded films are offered between 2 – 10 mils in thickness
Produced through free-radical polymerization, LDPE has the most long- and short-chain branching of any form of PE, resulting in its lower density. That exceptional “formability” makes LDPE particularly useful for a range of applications, from rigid products like plastic bottles, buckets, and bowls to filmy ones like plastic grocery bags and plastic cling-wrap.
Many polyethylene bundling shrink films are made with Low-density polyethylene. The low-density polyethylene offers a low shrink temperature and excellent clarity. One of the most common uses for polyethylene bundling film is for wrapping water bottles and canned goods. The polyethylene bundling film is thicker and offers more strength than polyolefin or PVC shrink film.
A large variety of packaging products are made with LLDPE. Low production costs, high clarity, heat seal-ability, high elongation, and softness are primary reasons these forms of polyethylene are often chosen for packaging. The most stretch film is made from either cast or blown extruded LLDPE. LLDPE offers the high Polyethylene Shrink Filmstretch rate needed for the stretch film.
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