There are a number of types of regulations that plastic packaging and the plastics packaging industries must meet, around the world. Most of these regulations are not directly aimed at plastics packaging, but rather are parts of more broad-based requirements relating to workplace safety, pollution prevention, product labeling, tamper evidence, and a variety of other concerns. Most of these are beyond the scope of this article. The regulations discussed in this chapter are those which limit the selection of a plastic type for a particular application, and/or limit the constitutes of a plastic resin, including additives, monomer residues, and other ingredients. Typically, these regulations depend on the use of the packaging, and are most stringent for pharmaceutical or other medical products, somewhat less so far foods, still less stringent for cosmetics, and much less so for most other types of products. Our discussion in this chapter will cover only the regulatory situation in the United States. With the increasing globalization of trade, it is, of course, important to be aware of regulations in other countries around the world.
Archive for January, 2010
Introduction Rugulations of Plastic Packaging
Sunday, January 31st, 2010Plastic Flexible Packaging
Saturday, January 30th, 2010Characteristics of Flexible Packaging
The major advantage of flexible packaging in economy. Flexible packaging makes very efficient use of both materials and space. The ratio of delivered product to package material is high, and use of cube is efficient, so distribution packaging can be smaller. Storage of unfilled packages occupies very little space, especially if they are stored as webstock. Forming packaging is generally rapid and simple. All of this contributes to lower cost.
The primary disadvantages of flexible packaging are its lack of convenience for the user, and lack of strength. Flexible packaging has no appreciable ability to support a load, so secondary packaging must provide any strength that is required. Flexible packages tend to be difficult to open, and they are often impossible to reseal effectively.
A number of developments have added to the consumer appeal of flexible packaging. One feature that is increasingly being used is zipper closures to provide reseal capability. Easy-peel seals have been developed to facilitate opening, and some of these provide for reclosure. Spouts have been added to some flexible packaging for dispensing, and some of this contain caps. While these features may add substantially to the package cost, they can also have a significant impact on seals, especially in markets where flexible packages compete against rigid containers.
Historically, the way to compensate for the lack of rigidity and load-bearing capacity of flexible packaging has been to combined pouches with paperboard cartons or with corrugated fiberboard boxes in bag-in-box packages. Such packages are commonly used for dry products, such as breakfast cereal, as well as for liquid products, such as inexpensive wines. Stand-up pouch designs provide enough rigidity that a product, as the name indicates, can stand on the store shelf. Use of pouches has been retortability, allowing these pouches to substitute for rigid packages such as cans, as well as for paperboard cartons. Demand for pouches in the U.S is expected to reach nearly 80 billion units by 2006, for a total value of $4.6 billion. Flexible plastic packaging, for a number of years, has been the most rapidly growing segment of the packaging industry, accounting for about half of all use of plastics in packaging.
The simplest form of flexible packaging is warp, a flat piece of material designed to the folded around the product in some way. Stretch warp and shrink warp are the most commonly used. In the chapter, we will consider package has occurred. These packages can be categorized as bags, envelopes, sacks, and pouches. All are made by folding and sealing the plastic together in some way. These terms are not clearly defined, and there is, consequently, quite a bit of overlap and confusion in the way the terms are used. Rather than attempting to order the flexible packaging universe into these neat categories, we will, instead, refer to such packages generically as pouches, when talking about smaller packages, and bags when talking about the large bulk packages.
Injection Blow Molded Tablet Bottle Production
Friday, January 1st, 2010This weekend we have began our HDPE plastic tablet bottle production by our injection blow molding machine, workers and machinary works smoothly. Injection blow molding process comprises three stages: Injection the plastic resin, blow the gas and ejection the finished plastic bottles. See attached photos below:
This is also the first day of the 2010, happly New Year’s Day ! All best wishes to our plastic resin suppliers in the middle east and tooling engineers from Japan and the U.S, thanks you for all the efforts made in the past 2009!
Wuxi Glory Plastics Co.Ltd
01/01/2009