High-Density Polyethylene HDPE Resins

With a simple parison, the large-diameter sections of the botde have a thin wall and the small-diameter sections have a thick wad. Certain modifications of the die can control the thickness of the parison wad along its length, which results in a bottle with improved wad thickness distribution and better strength. High density polyethylene (HDPE) is the most common blow mol ding resin used to produce containers ranging in size from 30 cm to 200 L. 

PET/HDPE blends, 21 452. See also High density polyethylene (HDPE) Poly(ethylene terephthalate) (PET) Petite yeasts, 26 451 Petitgrain oils, in perfumes, 18 370 PET molding resins, 20 56-57 current prices for, 20 59t properties of, 20 59t uses for, 20 57 PETN, 10 734-735. See also... 

Polyethylene is the most widely used resin. High density polyethylene (HDPE) is used for rigid containers such as dairy and water jugs, household product containers, and motor oil bottles. Low density polyethylene (LDPE) is often used in films and bags. 

Plastics Several types of plastics, such as polystyrene, high density polyethylene (HDPE), acrylonitrile butadiene styrene (ABS), resin/... 

Polyethylene. There are three basic types of polyethylene loams of importance (I) extruded loams from low density polyethylene ILDPE) f2) foam products from high density polyethylene (HDPE) and ( ) cross-linked polyethylene foams. Other polyolehn foams have an insignificant volume as compared to polyethylene foams and most or their uses are as resin extenders. 

This chapter covers fundamental and applied research on polyester/clay nanocomposites (Section 31.2), which includes polyethylene terephthalate (PET), blends of PET and poly(ethylene 2,6-naphthalene dicarboxy-late) (PEN), and unsaturated polyester resins. Section 31.3 deals with polyethylene (PE) and polypropylene (PP)-montmorillonite (MMT) nanocomposites, including blends of low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and high density polyethylene (HDPE). Section 31.4 analyzes the fire-retardant properties of nanocomposites made of high impact polystyrene (HIPS), layered clays, and nonhalogenated additives. Section 31.5 discusses the conductive properties of blends of PET/PMMA (poly (methyl methacrylate)) and PET/HDPE combined with several types of carbon... 

Place the container (high density polyethylene — HDPE) to be used on a balance and tare. Fill with water to required depth (approx. 0.75-1.0 cm — enough to cover the sample when it is placed into the container). This is the mass of resin mixtnre needed for each replacement (round up to nearest gram), and the required mass of each reagent may be calculated using the standard below. 

The commodity thermosets of urea, melamine, and phenolics account for about one-third of building and construction industries resin consumption. Most of this is used for resin-bonded woods such as plywood, particle board, and oriented strand board. High-density polyethylene (HDPE), used primarily for rigid piping, accounts for about 5% of consumption. Other significant resins, accounting for 3-5% of total consumption, include other polyethylenes, unsaturated polyester, and polystyrene. 

Another material very used as shell in an MPCM system is melamine-formaldehyde resin (MF). Su et dXP studied the influence of the tanperature in the deformation, for high-density polyethylene (HDPE), polystyrene (PS), and polyurethane (PUR), concluding that the yield point of MPCM decreases with the increase of temperature. Moreover, Si02 is also a very common nonpolymeric shell used in MPCM systems. ... 

---