Selected Material Alternatives

Company "X" wishes to analyze the performance characteristics of a standard size tray as it relates to a Medical, Microwavable, Food, or Industrial Carrier application. For each application, there is a variety of monolayer or coextruded structure options, which yield different performance characteristics. The performance results are given below. The standard tray size is 5" L x 5" W x 1" H with a starting material gauge of 20 mils.

Clear Medical Grade Materials
Structure	Material Yield	Specific Gravity	OXTR	MVTR	Sterilization Technique
Polypropylene/EVOH	1,500	0.923	0.024	0.024	Autoclave
High Impact Polystyrene	1,331	1.040	14.175	0.405	ETO
Polypropylene	1,530	0.905	9.720	0.020	ETO
High Density Polyethylene	1,442	0.960	7.493	0.012	E Beam
Glyco Modified Polyethylene Terephthalate	1,090	1.270	1.013	0.162	E Beam; Gamma
Medium Density Polyethylene	1,486	0.932	21.668	0.028	Gamma
Nucleated Polypropylene	1,538/	0.900	9.720	0.020	Gamma
Microwaveable Materials
Structure	Material Yield	Specific Gravity	OXTR	MVTR	Sterilization Technique
Styrene Maleic Anhydride	1,331	1.040	14.175	0.405	Microwave
Polypropylene/EVOH	1,500	0.923	0.024	0.024	Autoclave
Food Barrier Materials
Structure	Material Yield	Specific Gravity	OXTR	MVTR	Sterilization Technique
Polypropylene/EVOH	1,500	0.923	0.024	0.024	Autoclave
HIPS/Saran/HIPS	1,269	1.091	0.045	0.057	Aseptic
Industrial Carrier Materials
Structure	Material Yield	Specific Gravity	OXTR	MVTR	Sterilization Technique
HIPS/Scrap/HIPS	1,331	1.040	14.175	0.405	--
100% Recycled HIPS	1,331	1.040	14.175	0.405	--

Notes
Material Yield, expressed as Square Inches per Pound, is calculated using the following formula:
    27.69/(Specific Gravity * Mil Gauge)
Specific Gravity = Mass per unit volume divided by one gram per cc (water) @ 4°C.
OXTR = Rate of Oxygen Transmission @ 50% Relative Humidity & 75°F in grams cc's per mil per 100 sq in per day @ atmospheric conditions.
MVTR = Rate of Moisture- Vapor Transmission @ 90% Relative Humidity & 95°F in grams per mil per day per 100 sq in
Sterilization Techniques-
    Aseptic Form/Fill/Seal
    Autoclave: 250°F for 20-30 minutes
    Gamma Irradiation: 1.5 to 3.0 megarad dosage levels
    E Beam: Electronic beam sterilization
    ETO Ethylene Oxide gas sterilization