Guide to selecting the right liner for your drum and pail
by Amanda Verash-Morris
Marketing Communications Manager, CDF Corporation
Most people know the use of drum and pail liners saves money, keeps containers reusable, minimizes waste and ensures product purity; however not everyone knows how to select the proper liner. Below is a guide to help you select the best liner for your container, application and process.
Do you have a steel pail or a plastic pail?
If your container is a steel pail, you do not need to know the pail height because all steel pails are manufactured in the same size. If your container is a plastic pail, you need to measure the height of the pail because plastic pail liners come in many height options.
What are the dimensions of your steel drum, plastic drum or fiber drum?
Drums and drum liners come in many sizes. To get the best fit for your drum, you will need to measure the height and diameter of the drum.
If your container is a steel drum, is it a new drum or is it reconditioned? The height of new drums is typically 34.25 inches; a standard 55-gallon liner will work for you. If your steel drum is reconditioned, your best options are either the accordion or combination liner, which are described below.
Steel drum liners are available in four designs:
Straight-sided liners fit smoothly into new drums and are ideal when using follower plates.
Accordion liners have flexible, pleated side walls that accommodate variations in reconditioned drum heights.
Combination liners combine a straight-sided design with a band of accordion pleats to accommodate both drum height variations and follower plate use.
Vented inserts include four holes near the top to vent trapped air during a fill, allowing drums to be filled with the lid on.
Do you have a specific material or barrier requirement?
High-density polyethylene liners are rigid and durable. They are robust enough for a wide range of applications and have superior solvent resistance.
Low-density polyethylene liners are intended for general use. They provide superb tensile strength and elongation, as well as high resistance to tears and flex cracking. Low-density polyethylene is designed for applications up to 175˚F.
Polypropylene liners are made from a thermoplastic polymer used in a wide variety of applications. They are rugged and unusually resistant to many chemical solvents, bases and acids. Polypropylene liners are typically used for the hot-fill process, up to 270˚F.
Anti-stat liners contain an internal agent to aid in the reduction of static build-up, thus reducing dry-chemical static cling and the chance of ignition of flammable materials.
Conductive liners are made from conductive plastic that is engineered to adsorb an electrical charge and move it safely to ground.
High barrier foil provides a high oxygen and water vapor barrier and is constructed of sides made from a lamination of polypropylene-aluminum foil-polyethylene and a bottom made from a polyethylene-foil-polyester lamination.
Types of Liners
What level of durability do you require?
Heat sealed liners are best for thin liquids or powders. Heat seal technology is used to produce flat seam and round bottom liners. Films that can be heat sealed include: metallized polyester and foil laminates for moisture protection; conductive laminates and anti-static films for volatile materials; nylon and co-extruded films for chemical resistance; polypropylene for high-temperature requirements; and low-density polyethylene for general use.
Thermoformed liners are strong, semi-flexible, seamless (leak-proof) liners in a range of thicknesses designed to withstand the rigors of your most demanding applications. Resins that can be thermoformed include: low-density polyethylene, high-density polyethylene, polypropylene for high temperature resistance, anti-static polyethylene for use with volatile materials and ethylene-vinyl alcohol copolymer for oxygen resistance.
If you require a liner thicker than a thermoform, blow molded liners are ideal for heavy stress operations requiring maximum strength and protection.
Agitator liners are perfect for heavy-duty mixing, pumping and storing of any liquid that requires constant agitation. The anti-stat additive helps to reduce static build-up in static-sensitive applications compatible with low-density polyethylene, such as paints and many volatile materials.
CDF & BASCO
CDF Corporation is a global company that specializes in the manufacture and sale of high quality pail, drum, intermediate bulk container and bag-in-box liners and flexible packaging. Our unique products satisfy a variety of markets and applications, including the food and beverage, chemical and cosmetic industries.
BASCO is a trusted distributor of CDF liners and carries all of the products mentioned above. If you have questions on what type of drum or pail liner is appropriate for your application, please call a BASCO Customer Service Expert at 800-776-3786.
[Published Spring 2015]
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