Packaging applications types

The main fluids of interest with plastics are oxygen and water vapour (for packaging applications) and CO2 (for carbonated drinks applications). Fig. 1.13 and Fig. 1.14 illustrate the type of behaviour exhibited by a range of plastics. In some cases it is necessary to use multiple layers of plastics because no single plastic offers the combination of price, permeation resistance, printability, etc. required for the application. When multi-layers are used, an overall permeation constant for the composite wall may be obtained from... 

This review is concerned with the engineering thermoplastic uses of polyamide materials in injection moulding and extrusion applications. Types of polyamides are described, and their key properties are considered. Commercial applications in the automotive, electrical/ electronic, engineering and construction, and packaging industries are discussed. Polyamide processing is... 

An elastomeric closure is a packaging component that is, or may be, in direct contact with a drug product. Elastomer selection for parenteral packaging principally involves consideration of chemical, physical, and biological properties, with emphasis on the stability profile of the drug/container system. Typical elastomeric closure compositions are listed in Tables 1 1. Although certain packaging applications frequently call to mind certain elastomer types, it is not feasible to prescribe specific... 

This type of method offers several advantages over the pressure differential methods discussed previously. With little or no pressure differential there is less problem from leaks, no difficulty in supporting the test piece, and the situation is more like that in many packaging applications. Greater sensitivity is possible enabling very low permeability materials to be tested conveniently and the different transmission rates of the components of gas or vapour mixtures can be measured. The principal disadvantage is that the apparatus is relatively expensive. 

With the TSA developed in (115,130,132,165) it was possible to almost reach simulation intervals of 1 milisecond. This makes in principle possible to predict D as small as a few 10"12 cm2/s. Therefore the TSA seems to be a good choice to predict D for the type of diffusion processes encountered in packaging applications. But for this, the actual TSA algorithms must be developed to take also into account strong interactions between the penetrant and the host atoms, and the deformation of the polymer structure at the passage of complex penetrant molecules. 

The main types of NatureWorks PLA that are available for packaging applications include general purpose film grades, extrusion coating, extrusion and thermoforming grades and injection stretch blow moulding. 

Examples of adhesive types used in food packaging applications... 

Presentation and packaging indicate type of package and pack sizes data on packaging material re-ingredients and technical construction. These relate to storage of the drug and its intended use. The applicant may also provide manufacturer s specification for packaging materials. 

Barrier resins, polymers which have relatively low rates of small molecule permeation, have revolutionized the packaging industry in recent years. For food packaging applications, it is specifically desirable to impede oxygen permeation. Each food type has its own particular packaging requirements, which leads to the use of many polymer classes at a variety of temperatures and relative humidities in these applications. 

Fast assimilation of inhibited films in engineering has lead to the application of combined packages, some types of which are illustrated schematically in Fig. 2.55 [3]. 

In what types of packaging applications would you expect to find UV stabilizers used in plastic resins ... 

Hot melt adhesives are the fastest growing adhesive group for packaging applications. They are 100% solids and do not require any type of soivent. 

Until the 1960s, plastics and rubber were used mostly as consumer materials, with plastics used mainly in packaging applications. After this period, however, more sophisticated types of special polymer were evolved for different, demanding applications with combinations of plastics as well as rubbers. 

AR551 7.9 Standard format and content of Part 71 applications for approval of packaging of Type B,... 

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