Unit_10_-_Flexible_Packaging

Unit_10_-_Flexible_Packaging - some parts of the seal to be...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
10.2.1 Heavy Duty Plastic Bags One of the early uses of bags of this type was in 1959 in Kansas where printed polyethylene bags were used to ship 50 pound units of chemical fertilizer. The plastic used to form the bags was 10 mils thick (How thick is that in inches?) and the tops of the bags were heat sealed. Today, this method of packaging is used for plastic resin pellets, potting soil, mulch, pet food, animal feed additives, stones, concrete mixes, and many other products. The major disadvantage of the thick plastic material is the difficulty of heat sealing through 20 mils of plastic. The process is usually slow and hard to control. This often causes
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: some parts of the seal to be over heated and melted away, leaving a hole, while other portions do not adhere together because the temperature does not reach the level necessary to be sealed together. Can you think of some examples where you have seen this? 10.2 Types of Flexible Packages The following are some common types and examples of flexible packaging. Examples of flexible packages. (While we are at it, notice the organic beef jerky and dog food as a consumer food trend.) 10. 2...
View Full Document

Ask a homework question - tutors are online