High density polyethylene extrusion

Plastic Film, Polyester, Polyethylene Coated (For I.D. Cards) Plastic Tubes and Tubing, Heavy Wall, Teflon TFE Resin Thermoset Epoxy Resin Sheet, Paper Reinforced Insulation Tape, Electrical, Pressure Sensitive, Telfon TFE Resin Plastic Material for Molding and Extrusion, High Density Polyethylene and Copolymers Insulation Sleeving, Electrical, Flexible, Heat-Shrinkable Film Tape, Pressure Sensitive Plastic Sheets, Virgin and Borated Polyethylene Insulation Tape, Electrical, High Temperature, Teflon, Pressure Sensitive... 

S.E. Barnes, E.C. Brown, M.G. Sibley, H.G.M. Edwards, I.J. Scowen and P.D. Coates, Vibrational spectroscopic and ultrasound analysis for in-process characterization of high-density polyethylene/polypropylene blends during melt extrusion, Appl. Spectrosc., 59, 611-619 (2005). 

Film -use of microbial polysaccharides [MICROBIAL POLYSACCHARIDES] (Vol 16) -cellulose esters m [CELLULOSE ESTERS - ORGANIC ESTERS] (Vol 5) -drying of [DRYING] (Vol 8) -by extrusion [PLASTIC PROCESSING] (Vol 19) -ITOPE [OLEFIN POLYMERS - POLYETHYLENE - HIGH DENSITY POLYETHYLENE] (Vol 17) -from LDPE [OLEFIN POLYMERS - POLYETHYLENE - LOW DENSITY POLYETHYLENE] (Vol 17) -of LLDPE [OLEFIN POLYMERS - POLYETHYLENE - LINEAR LOW DENSITY POLYETHYLENE] (Vol 17) -of polyethylene oxide) [POLYETHERS - ETHYLENE OXIDE POLYMERS] (Vol 19) -of polystyrene [STYRENE PLASTICS] (Vol 22) -m printing processes [PRINTING PROCESSES] (Vol 20)... 

High Density Polyethylene - [Both regular and high molecular weight (HMW)]. The time to increase in torque at 220°C. by the Brabender Plasticorder was determined as a measure of crosslinking. Yellowness Index after the Brabender test at 220°C. and after the first extrusion at 260°C. were also performed. 

Alpha Packaging manufactures botdes and jars made from polyethylene terephthalate (PET) and high-density polyethylene (HDPE) for the pharmaceutical, nutritional and personal care markets. Technologies used include injection blow moulding, injection stretch blow moulding, and extrusion blow moulding. Alpha manufactures stock and custom containers in a variety of styles and colours. 

Stabilized with 0.2% amine antioxidant High Density Polyethylene. Extrusion grades of hlgh-denslty polyethylene protected by 2.5% channel type black of 19 my particle size were exposed In a Weather-O-Meter for 10,000 hours without any evidence of serious mechanical damage, as measured by low temperature brittleness and elongation tests. This represents the useful limit In our accelerated weathering test, since as described In an earlier paper,(2) fllm-like deposits form on... 

High Density Polyethylene (HDPE). The preferred method of evaluating HDPE was found to be the time to cross link at 220 0 using the Brabender apparatus, as is made evident by the rapid increase in torque. Determining melt viscosity by multiple extrusion showed only small differences compared to the base polymer. 

HDPE exists as both a homopolymer and a copolymer with higher ethylene olefins. The latter offers properties which lie between low and high density, with typical densities of 0.945-0.950. Copolymers have found wide usage for extrusion blow, injection blow and injection moulding. They are, however, generally classified under HDPE. Virtually all high density polyethylenes contain an antioxidant. 

Materials. High density polyethylene (HDPE) having different molecular weights, and specific gravity of 0.951 (Marlex 5202, HXM 50100, made by Phillips 66 Co), were used for extrusion applications. Polyamides used were a semicrystalline copolyamide of adipic acid, hexamethylene diamine and caprolactam, and a copolyamide containing isophthalic acid as well. An anhydride modified polyethylene (3-5) as an interlaminar adhesive/compatibilizer was also used. The combinations are generally included in "Selar" barrier materials supplied by E. I. du Pont de Nemours Co. 

Finatbene . [FinaChem.] High-density polyethylene homq >olymers and copolymers for blow molding, film blowing, pipe extrusion, cable jacketing. 

Effect on the Properties of High Density Polyethylene Drawn hy Solid-State Extrusion... 

A widely popular container or carton used to store liquid or solid food is coated/laminated with various barrier and sealant materials, for example, a high-density polyethylene (HOPE), a heat seal-able polymer material such as low-density polyethylene (LDPE), or a heat-sealable barrier material such as an ethylene vinyl alcohol copolymer (EVOH), which can emit unwanted odors created during extrusion coating or package converting/sealing. 

Miller et al. have recently reported infra-red dichroic data obtained for high density polyethylene crystallised under the orientation and pressure effects of a pressure capillary viscometer. Their data for a number of crystalline bands (including the 1894 cm" absorption) showed that the crystal c-axes were almost perfectly oriented (f 1) in the initial extrusion direction. The amorphous orientation functions were generally lower, but corresponded to an extension ratio between 2 and 7 when compared with the above results of Read and Stein and of Glenz and Peterlin. Further evidence was also obtained for the relatively high orientation of the amorphous component of the 2016 cm" band (U = 0-66-0-72). 

Li et al. reported that immiscible high-density polyethylene (HDPE)/ poly(ethylene terephthalate) (PET) blends, prepared by means of melt extrusion with ethylene-butyl acrylate-glycidyl methacrylate (EBAGMA) terpoly-mer as a reactive compatibilizer, can exhibit shape memory effects [32]. They observed that the compatibilized blends showed improved shape memory effects along with better mechanical properties as compared to the simple binary blends. In the blend, HDPE acts as a reversible phase, and the response temperature in the shape recovery process is determined by of HDPE. The shape-recovery ratio of the 90/10/5 HDPE/PET/EBAGMA blend reached nearly 100%. Similar behavior was observed for immiscible HDPE/ nylon 6 blends [33]. The addition of maleated polyethylene-octene copolymer (POE-g-MAH) increases compatibility and phase-interfacial adhesion between HDPE and nylon 6, and shape memory property was improved. The shape recovery rate of HDPE/nylon 6/POE-g-MAH (80/20/10) blend is 96.5% when the stretch ratio is 75%. 

Extrusion blow molding process (a) single-screw extruder, (b) die with a gas supplier, and (c) mold. The blow molding condition of high-density polyethylene (HOPE) was set as typically used in industry. The maximum extrusion temperature of a single-screw extruder was set at 220°C for HDPE and 250°C for HDPE/polyethylene terephthalate (PET) blend. 

Blown bottles (500 ml detergent bottle) by extrusion blow molding (a) high-density polyethylene (HOPE) and (b) HDPE/polyethylene terephthalate (PET) blend. 

Meyrs E.G. Chahyadi I.S. Gonzalez C. Coberly C.A. Wood flour and polypropylene or high-density polyethylene composites influence of maleated polypropylene concentration and extrusion temperature on properties. In Walcott MP, editor. Wood fihres/polymer composites fundamental concepts, processes, and material options. Madison, USA Forest Product Society, (1993), pp. 49 -56. 

Polyethylene, high-density Polyethylene, linear low density profile extrusion, pipe Polyvinyl chloride, chlorinated profiles... 

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