This info should help answer some questions but sometimes even though the plastic is the correct type (number on the bottom of it) doesn't mean it is food grade. This info really needs to come from the manufacturer or I would say if it contained a product that you consume it most likely is made from food grade plastic.
<A name=foodgrade></A>What Is Food Grade Plastic?
The U.S. Food & Drug Administration (FDA) requires that plastics used in food packaging be of greater purity than plastics used for non-food packaging. This is commonly referred to as
food grade plastic. Plastics used to package pharmaceuticals are held to an even higher standard than food grade.
Food grade plastic does not contain dyes or recycled plastic deemed harmful to humans. However, this does not mean that food grade plastic cannot contain recycled plastic. The FDA has detailed regulations concerning
recycled plastics in food packaging.
Another aspect of food grade plastic is matching the appropriate type of plastic to the food in question. Foods that are highly acidic or that contain alcohol or fats can leach plastic additives from the packaging or container into the food. As a result, you should only use plastic containers that are FDA approved for the particular type of food the plastic will come into contact with.
Finally, it should be noted that a plastic container can no longer be considered food grade if it has been used to store non-food items like chemicals, paint, or detergent.
<A name=s></A>Types Of Plastic
According to the
American Plastics Council, the following six resins account for nearly all of the plastics used in product packaging. You're probably familiar with these symbols on plastic containers and packaging.
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<TD>PET or PETE (polyethylene terephthalate) is a clear, tough polymer with exceptional gas and moisture barrier properties. PET's ability to contain carbon dioxide (carbonation) makes it ideal for use in soft drink bottles.</TD></TR>
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<TD>HDPE (high density polyethylene) is used in milk, juice and water containers in order to take advantage of its excellent protective barrier properties. Its chemical resistance properties also make it well suited for items such as containers for household chemicals and detergents.
Most five gallon food buckets are made from HDPE.</TD></TR>
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<TD>Vinyl (polyvinyl chloride, or PVC) provides excellent clarity, puncture resistance and cling. As a film, vinyl can breathe just the right amount, making it ideal for packaging fresh meats that require oxygen to ensure a bright red surface while maintaining an acceptable shelf life.</TD></TR>
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<TD>LDPE (low density polyethylene) offers clarity and flexibility. It is used to make bottles that require flexibility. To take advantage of its strength and toughness in film form, it is used to produce grocery bags and garbage bags, shrink and stretch film, and coating for milk cartons.</TD></TR>
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<TD>PP (polypropylene) has high tensile strength, making it ideal for use in caps and lids that have to hold tightly on to threaded openings. Because of its high melting point, polypropylene can be hot-filled with products designed to cool in bottles, including ketchup and syrup. It is also used for products that need to be incubated, such as yogurt.
Many Cambo, Tupperware and Rubbermaid food storage containers are made from PP.</TD></TR>
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<TD>PS (polystyrene), in its crystalline form, is a colorless plastic that can be clear and hard. It can also be foamed to provide exceptional insulation properties. Foamed or expanded polystyrene (EPS) is used for products such as meat trays, egg cartons and coffee cups. It is also used for packaging and protecting appliances, electronics and other sensitive products.</TD></TR></T></T></TABLE>
Another important type of plastic is
polycarbonate, a clear shatter-resistant material used in restaurant food storage containers and recently in the Rubbermaid Stain Shield line of home food storage containers.
<A name=inappropriate></A>Inappropriate Plastic Containers
Any plastic container that is not made of food grade material should not be used for wine making. Examples include:
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<LI>Garbage cans or pails
<LI>Mop buckets
<LI>Laundry detergent or kitty litter buckets
<LI>Dry pet food buckets
<LI>Household storage containers or totes
<LI>Any container lined with a plastic garbage bag
<LI>Any food grade container that has been used to store non-food items like chemicals, paint, or detergent </LI>[/list]
Edited by: masta