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Medical Device Link . The Effects of Annealing Conditions on the Structure and Properties of Polypropylene Fibers
parameters, such as draw ratio and annealing conditions. It has been observed, during annealing of oriented polymers, that the shrinkage and relaxation of molecular orientation occur much faster than does the increase in material density. Annealing of cold-drawn PP fibers at 140 C has been shown
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Engineering Films
polyester film. Oriented polypropylene, a thermoplastic with low specific gravity, has excellent resistance, relatively high melting point, and good strength. Polycarbonate film is specified for its toughness, clarity, and high heat-deflection temperature. Polyimides, both thermoplastics
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InkJet Marking of Dog Food Bags
to five lines of text at up to 60 dpi and requires no special shutdown or startup procedures. In the case of the pet food bags, it uses numerical characters only - for example "04/25/05-08:43-93" to pinpoint date, time and machine number for each bag produced. And each bag consists of an oriented
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Care and feeding of living hinges
proper polymer processing during molding. Optimum hinge performance, including high strength and good fatigue endurance, comes when PP molecules are oriented perpendicular to the center axis point of the hinge. The mold must be designed so the polymer flows across, and not along, the hinge length
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Packaging Goes Back to Nature
complete degradation. Oxobioplast claims the plastics are reduced to carbon molecules in five years. Reverte meets EC and FDA food-contact requirements and serves in high and low-density polyethylenes, biaxially oriented polypropylene (BOPP), and chlorinated polypropylene (CPP) for food packaging
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MICRO: Product Technology News
. Samples pass through a sheath flow cell, which transforms the particle suspension into a narrow or flat flow, ensuring the largest area is oriented toward the camera and that all particles are in focus. A CCD microscope illuminated by strobe captures particle images every 1/30 second. The system can
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MICRO:Top 30 (November/December 2001)
images of each particle as well as a scattergram of shape index versus particle size. Samples pass through a sheath flow cell, which transforms the particle suspension into a narrow or flat flow, ensuring the largest area is oriented toward the camera and that all particles are in focus. A CCD
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MICRO:Top 40 - Page 2 (Nov '00)
an object-oriented, multitasking Windows NT software platform that facilitates factory integration. ADP/ADS Series Two semiconductor process pumps are based on multistage Roots technology. The dry pumps feature a nitrogen mass-flow sensor and standby purge function, and they provide precise temperature control