By: Berlin Packaging Specialist
Date: November 11, 2019
Selecting the correct material for your package is important to ensure product compatibility. Below are characteristics for the most common resins.
Need additional assistance? Contact a Berlin Packaging Consultant at 800.2.BERLIN to assist you in selecting the perfect package.
PET is a durable material with excellent gloss, clarity, and impact resistance desired for clear bottles. PET containers are ideal for personal care, food, beverage, and pharmaceutical products. When you want the appeal of glass, but want the safety, lightweight, and convenience of plastic, choose PET.
High Density Polyethylene (HDPE) is the most widely used resin for extrusion blown plastic bottles. HDPE is economical, impact resistant, and provides a good moisture barrier. It is compatible with a wide range of products including acid concentrates and some caustics, but is not compatible with solvents. HDPE is naturally translucent and flexible. The addition of color will make HDPE opaque although not glossy. HDPE offers good protection at below freezing temperatures, but must not be used with products filled at over 180°F or products requiring a hermetic seal.
Polyvinyl Chloride (PVC) is naturally clear (can be hazy in thicker forms), has extremely good resistance to oils, and has very low oxygen transmission. It provides an excellent barrier to most gases and its drop impact resistance is also very good. This semi-rigid material is also very chemically resistant, but it is vulnerable to solvents. Most PVC containers will distort at 160°F, making it incompatible with hot filled products. Since it provides a good oxygen barrier, PVC is an excellent choice for salad oil, mineral oil, and vinegar. It is also commonly used for shampoos and cosmetic products.
Low Density Polyethylene (LDPE) is very similar to HDPE in composition, but it is less rigid and is generally less chemically resistant. LDPE, however, is more translucent and flexible than HDPE. LDPE is ideal for use with products requiring flexible and squeezable packaging such as shampoo, conditioners, adhesives, and many others. LDPE bottles usually have a much glossier finish than comparable HDPE bottles.