Additional Research

Social Issue: Childhood Obesity, Healthy Food Choices

"Milk is an excellent source of nutrition, and with so many other beverage choices available in school cafeterias, kids need a fun, educational reason to choose milk,"

Source: Erin Reynolds, marketing director for Evergreen Packaging

Natural bio milk is one of the best sources of the vital nutrients that help maintain our body strong and healthy. Milk contains the ideal mix of essential nutrients: proteins, lipids, calcium, vitamins A, B6, biotin and potassium. This helps to prevent diseases such as osteoporosis and keep all the body (nails, hair, skin, bones and muscles) healthy.

Source: http://www.behance.net/gallery/LATTINAA-(Latte-in-lattina)/665684

The Design must be tamper-evident and tamper-resistant

Materials/Manufacture

Milk cartons are constructed from polyethylene-coated liquid packaging board

Paperboard can be waxed or coated with polyethylene to form a moisture barrier. This may serve to contain a liquid product or keep a powder dry.

source:http://www.recyclecartons.com/why-juice-box-milk-carton-recycling-matter/

Manufacture

A liquid packaging board might be up to five plies and is formed on a multi-ply paper machine with online coating.

The most common is to use three plies with a basis weight of about 300 g/m².

The base or middle ply is normally made of Pulp from bleached or unbleached chemical pulp, CTMP or broke (waste paper from a paper machine).

CTMP gives more bulk and stiffness. The top ply (inside) is made of bleached chemical pulp.

The barrier coating depends of the application and might be applied on both sides.

The back side of the board is the printing side and might have an extra ply made from chemical pulp of quality that is suitable for the printing applications.

Liquid packages are normally heat sealed.

Cartons filled with short shelf life dairy products use board that are barrier coated on both sides with one layer of low density polyethylene.

For long shelf life products it is common to use aluminium as barrier coating together with polyethylene.

Commonly the plastic coating on the top side is 12 - 20 g/m² and on the reverse side 15 - 60 g/m².^[2]

Liquid packaging board are used for two package types: brick and gable top cartons.

Applications

·         Packaging for beverages. The most common applications are milk and juice box packaging.

Source: http://en.wikipedia.org/wiki/Liquid_packaging_board

References:

1.  Paulapuro, Hannu (2000). "2". Paper and Board Grades. Papermaking Science and Technology 18. Finland: Fapet OY. pp. 62–64. ISBN 952-5216-18-7
2. ^ ^a b Savolainen, Antti (1998). "6". Paper and Paperboard Converting. Papermaking Science and Technology 12. Finland: Fapet OY. pp. 169–170. ISBN 952-5216-12-8

This is link to some great information about milk packaging and how it's manufactured:

http://www.enotes.com/milk-carton-reference/milk-carton


Here is a YouTube Video explaining the process of: How Milk Cartons are Manufactured:

http://www.youtube.com/watch?v=jNbKIc8tD5I

Environmental Information

Refrigerated cartons contain approx 80% paper and 20% polyethylene.

Majority of packaging is made from trees a renewable resource.

By producing sustainable and carbon smart products made mainly from a renewable resource; consumers can wisely select cartons as one of the best package choices to meet their food and environmental needs.

·         Cartons are mainly made from paper. The paper in our cartons comes from growing forests where trees are replaced by new ones and biodiversity is maintained. None of the resources used in our cartons come from old growth trees or rainforests.

·         Cartons are light-weight and have a great product to package ratio. If you choose a product in a carton, you are taking home an average of 94% product and only 6% package.

·         Products packaged in cartons are transportation efficient. In general, the same amount of product can be shipped in fewer trucks. Fewer trucks = less fuel = less green house gas emissions.

·         Big or small, recycle them all! Cartons are recyclable, where collection and facilities exist.

source:http://www.recyclecartons.com/why-juice-box-milk-carton-recycling-matter/

Here is a YouTube Video explaining the process of: How Milk Cartons are Recycled:

http://www.youtube.com/watch?v=vaU6AV3fsOM