CDF Core Products
CDF GLOSSARY OF TERMS
Anti-Block - The name for a treatment applied to plastic film surfaces to keep them from sticking together (blocking). Anti-Block is an important feature and should be tightly controlled for proper performance of multi-ply bags.
Anti-Stat - Anti-stat acts as a dissipater of an electrical charge. Anti-stat liners have an anti-static additive made of low-molecular-weight materials that attract water from the environment, forming a thin film on the surface of the plastic. The anti-stat additive continuously blooms to the surface with a shelf life of 12 months. Typical industry standards meet NFPA-99 and MIL-B-81705C.
Anti-stat liners should not be used as the sole means to dissipate any charge. They only act to reduce the charge in the polyethylene liner itself.
Articulated Fill Arm - Apparatus used to keep the fill hose directly over center of bag during the fill process. Eliminates need to have someone tend the fill process. Also keeps bag aligned, reducing chance for a mis-fill.
Aseptic - Free from septic matter or disease-producing bacteria. In food processing and packaging, this is a word that describes the system used to package food in sterile fashion.
Aseptic Liners - Liners that are irradiated or sterilized. Typically used in the Food Processing industry, such as tomatoes and other fruits. Aseptic bags allow for extended shelf life by providing a sterile package along with oxygen barriers provided by the film.
Biodegradable - Made of substances that will decay relatively quickly as a result
of the action of bacteria and break down into elements such as carbon that are
Blow Molding - Blow-molding is a method of forming plastic whereby a hollow tube is made from molten plastic material and entrapped in a mold. Air is blown into the mold, expanding the tube and forcing it against the sides of the mold, thus forming into the shape of the part.
BSP (British Standard Pipethread) - Thread commonly used on bag fitments and adapters.
Carbon Dioxide (CO2) - Carbon dioxide enters the atmosphere through the burning
of fossil fuels (oil, natural gas, and coal), solid waste, trees and wood products, and
also as a result of other chemical reactions (e.g., manufacture of cement). Carbon
dioxide is also removed from the atmosphere (or “sequestered”) when it is absorbed
by plants as part of the biological carbon cycle.
Carbon Footprint - A carbon footprint is the total emission of greenhouse gases
(GHG) in carbon equivalents from a product across its life cycle from the production
of raw material used in its manufacture, to disposal of the finished product.
Chime - The chime is the area on a drum formed when the bottom flange rolls together with the body flange in the seaming process.
Conductive - Conductive liners are made from conductive plastic that is engineered to adsorb an electrical charge and move it to ground.
Contoured Lip - CDF's vacuum-formed inserts have a molded lip that snaps over the contour of the drum curl for a snug fit.
Curl - The curl is the top of an open head drum.
Elongation At Break - The amount of stretch the film underwent before the
point of break.
EVOH - Ethylene Vinyl Alcohol (acetate copolymer)
Extended Shelf Life - Involves the pasteurization of a product and the transfer
to a package in a controlled-atmosphere filler.
Extruded Film - The process in which the extrusion of molten resin occurs through
a die, which then produces a film.
FIBC (Flexible Intermediate Bulk Container) - Sometimes referred to as Super Sacks. Typically polywoven sacks with a liner inside used for shipping dry products.
Filling Machine - A packaging machine that measures a product from bulk by a
Fill Bridge - Used to hold bag up at top of tote during fill. May also be used at dispense to prevent bag from falling into container during dispense. Can be supplied in PVC, stainless steel or aluminum.
Fitment - Any plastic spout that is physically heat sealed or built into a liner,
Flex Cracking - Cracking in a film produced by repeated flexing. Flex cracking may occur over long distance shipping. Certain films are more flex crack resistant then others. The relationship between the shipping container and bag dynamics must also be taken into account when evaluating shipping methods. Form-Fit bags with metallocene based films (such as CDF's Flexus(TM) and higher temperature-resistant Flexus HF) and ASTM tested containers help reduce flex cracking related leakers.
Flow Rate - The rate at which the product is delivered to the filler.
Form-Fit - IBC cube-shaped liner, typically sized to the inside dimensions of the container.
Foil - A 4 or 5 layer lamination that provides superior moisture and oxygen barrier properties (Barria™ P/Foil and Barria™ A/Foil).
Gauge - A unit of measurement equal to a hundredth of a mil.
Greenhouse Gas (GHG) - a gas that contributes to the warming of the Earth's
atmosphere by reflecting radiation from the Earth's surface, e.g. carbon dioxide,
ozone, or water vapor.
Gusset - A triangular section of a bag which facilitates the formation of a square bottom.
HDPE - High Density Polyethylene
Heat Sealing - Sealing a package by applying heat to cause the film to melt together. This process must be tightly controlled to prevent "false sealing" such as cold seals and to prevent "zippering" from hot seals.
Intermediate Bulk Container (IBC) - Containers typically holding more than a 55-gallon drum but less then bulk (500 gallon) containers. Most popular sizes are 275 gallons (equivalent to five 55-gallon drums) and 330 gallon (equivalent to six 55-gallon drums).
Lamination - A multilayer film made by adhesively bonding two or more films together. Usually used to distinguish the structure from co-extrusion, which is multilayer film made from several molten resins.
Less Than Truckload (LTL) - LTL shipments typically weigh between 151 and
20,000 lb (68 and 9,072 kg). Less than truckload carriers collect freight from
various shippers and consolidate that freight onto enclosed trailers for linehaul to
the delivering terminal or to a hub terminal where the freight will be further sorted
and consolidated for additional linehauls.
Life Cycle Analysis - A technique to assess environmental impacts associated with all the stages of a product's life from-cradle-to-grave (i.e., from raw material extraction through materials processing, manufacture, distribution, use, repair and maintenance, and disposal or recycling).
Lock Assembly - A lock assembly is the devise that pulls together the ring to secure the lid to the drum body.
Mil - A thousandth of an inch.
Mesh - Mesh is the open weave structure designed to entrap or screen residue. Mesh is determined by the size of the open spaces in the screen.
Metallized Polyester Film (MPET) - see Barria™ Technical Data Sheet - Oxygen-barrier film, typically used as the outer ply on a two- or three-ply bag. Barria is CDF's own brand of MPET film, designed to provide the highest value to our aseptic customers.
Metallizing - The process of applying an extremely thin metal coating to a non-metallic substrate.
Metallocene - A catalyst used to tailor the properties of linear polyethylene. CDF uses metallocene to make our Flexus™ and Flexus HF films more resistant to flex cracking.
Mil - One thousandth of an inch. Typically expressed in gauge of film, i.e. 4-mil thick film. Typical IBC bags in U.S. are 2 or 3ply's of 4-mil thick film, forming a bag that is actually 8 or 12-mil thick.
MIL-B-81705C standards require static decay and surface resistivity testing as
follows: first the material must be conditioned for 24 hours at 12% +/- 3% relative
humidity. The material must meet the 2.0 seconds or less static decay time at
12 +/- 3% relative humidity at a temperature of 73°F +/- 5°F and a surface
resistivity of 1012 or less according to ASTM D257.
Microns - In Europe many times referred to as "microns". 100 microns = 4 mil. Rigors of shipping in U.S. can sometimes be more severe and traditionally thicker gauge films have been used.
Moisture Transmission - The amount of moisture that is capable of permeating
through a given area of film per day.
MVTR - Moisture Vapor Transmission Rate
Nested - Nested products are stacked one inside the other creating a sleeve of products that can be pulled apart for use.
NFPA-99 (National Fire Protection Association) standards require the material to
be conditioned for 24 hours at 50% +/- 2% relative humidity prior to testing and
then must meet the static decay time of 0.50 seconds or less at 50% +/- 2%
relative humidity at a temperature of 23+/- 1°C./p>.
NPT (National Pipe Thread) - Thread commonly used on bag fitments and adapters. Very similar to British Standard Pipethread (BSP).
Optical Density - A measure of the opacity of a metallized film layer. It is the log of the ratio of the intensity of transmitted light to incident light.
OTR - Oxygen Transmission Rate
Oxygen Transmission - The amount of pure oxygen that is able to permeate
through a given area of film per day.
PE - Polyethylene. Used when the writer wants to avoid being specific about whether he or she is referring to low density polyethylene or high density polyethylene, but is commonly synonymous with low density polyethylene.
PET - Polyethylene Terephthalate. PET refers specifically to an oriented film of polyethylene terephthalate.
Pillow Liner - Shape of liner looks like a pillow case when filled or blown up with air.
PN (Poly/Nylon) - Code to describe a two ply bag or liner composed of polyethylene
Polypropylene - Polymerized propylene
PP (Poly/Poly) - Code to describe a bag or liner with two plies of polyethylene.
PPM (Poly/Poly/Metal) - Code to describe a three ply bag or liner composed
of two plies of polyethylene and one of metal.
PPN (Poly/Poly/Nylon) - Code to describe a three ply bag or liner composed
of two layers of polyethylene and one of nylon.
PPP (Poly/Poly/Poly) - Code to describe a three ply bag or liner composed
PVC - Polyvinyl Chloride
Reconditioning - Reconditioning is a process used to restore drums and pails to good condition for resale or reuse. For more information contact The Reusable Industrial Packaging Association, http://www.reusablepackaging.org
Recycling - The processing of used or waste material so that it can be used again, instead of being wasted.
Ring & Bolt - Ring and bolt assembly is a common mechanism for securing the drum lip to an open head drum.
Seamless - Seamless products are those manufactured without seams or welds. Vacuum-formed and blow molded inserts are seamless.
Slip - A measure of the coefficient of friction (COF). High slip means low COF.
Sustainable - Exploiting natural resources without destroying the ecological balance of an area.
Sustainable Packaging - Sustainable packaging must meet the functional and economic needs of the present without compromising the ability of future generations to meet their own needs. Sustainability is not necessarily and end state but is a continuing process of improvement.
Taper - Taper refers to how certain plastic drums and pails gradually become narrower toward the bottom to allow stacking.
Tensile Strength - The resistance of a plastic specimen to breaking when subject to a stress applied longitudinally.
Thermoforming - Thermoforming, also known as vacuum forming, is a process in which heat is applied to a thermoplastic sheet that is then pressed into a mold and a vacuum is drawn to force the plastic into the shape of the mold.
Tie Layer - The common term for a co-extrudable adhesive.
Top Bead - The top bead is the top rolling hoop on a steel drum.
Trim - The trim is the final step in the manufacturing process that determines how much material remains near the lip of the insert. It is the cut made to the insert needed to drop it from a thermoforming frame.
UN Certified Packaging - A methodical performance oriented design approach intended to ensure any country in the world can produce sufficiently safe hazmat packaging to satisfy every other country in the world, thus facilitating international trade in hazardous materials with acceptable safety levels and uniform hazard communication.
Vacuum Forming - Vacuum forming, also known as thermoforming, is a process in which heat is applied to a thermoplastic sheet that is then pressed into a mold and a vacuum is drawn to force the plastic into the shape of the mold.
Valve-In-Place (V.I.P.) - Integrated valve, sealed directly onto bag. VIP is different then "fitment," as a fitment needs a separate adapter or valve attached at the dispensing location.
Venting - A thermoformed insert is accomplished by creating four small holes evenly spaced around the upper rim. This allows inserts to be installed faster, as well as efficient filling of sealed open-head drums. Venting allows air that would be otherwise trapped between the drum wall and the liner to escape, thus maximizing the amount of product the lined drum can hold.
Viscosity - The resistance to flow; the thickness of a product. High viscosity (high
resistance to flow) means the product is thick and low viscosity (low resistance to
flow) means the product is thin.