Bottles

Manufacturers form plastic bottles using a variety of techniques. The choice of material varies depending upon the application.

PET

Polyethylene Terephthalate is the material of choice for carbonated beverage and water bottles. PET is a very good barrier against alcohol and essential oils. It has good chemical resistance as well as a high degree of impact resistance and tensile strength. The barrier properties and impact strength result from the orienting process in PET manufacturing.

HDPE

High Density Polyethylene is the most widely used resin for plastic bottles. It is economical, impact resistant, and provides a good moisture barrier. HDPE is compatible with a wide range of products including acids and caustics and is available in FDA approved food grade. However, it is not compatible with solvents. HDPE is naturally translucent and flexible. The addition of color makes HDPE opaque though not glossy.

LDPE

Low Density Polyethylene: LDPE is similar to HDPE in composition. It is less rigid and generally less chemically resistant than HDPE but is more translucent. As LDPE is significantly more expensive than HDP, squeeze applications are its primary use.

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