97 results about "Polymer crystals" patented technology

This invention relates to an automatic or semi-automatic bladder relief and hydration system, designed to increase sanitation and comfort for users that require disposal of urine and hydration in the absence of sanitary facilities or potable fluids. This invention incorporates an inflatable urine collection means that may be deflated after use. A dual chambered back pack stores urine and potable fluid and / or liquid food. This invention incorporates disposable batteries integrated into a disposable urine storage bag. The disposable urine storage bag has a cleaning fluid chamber with a directional valve and pump system that automatically rinses and sanitizes the pump, hoses, collection means and the user with cleaning fluid stored in the cleaning fluid chamber. The disposable urine storage bag also contains absorbent polymer crystals capable of absorbing the urine as it is deposited in the bag during use.

Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are provided. Such tape fibers are basically manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat (and having very high cross sectional aspect ratios) tape fibers thereafter. These inventive tape fibers (and thus the initial films and / or tubes) require the presence of relatively high amounts of certain compounds that quickly and effectively provide rigidity to the target polypropylene tape fiber. Generally, these compounds include any structure that nucleates polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling. In such a manner, the "rigidifying" nucleator compounds provide nucleation sites for polypropylene crystal growth. Subsequent to slitting the initial film and / or tube, the fiber is then exposed to sufficient heat to grow the crystalline network, thus holding the fiber in a desired position. The preferred "rigidifying" compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, certain sodium and lithium phosphate salts [such as sodium 2,2'-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive tape fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

Unique thermoplastic (polypropylene, specifically) monofilament and / or tape fibers and yarns that exhibit heretofore unattained physical properties are provided. Such fibers are basically manufactured through the extrusion of thermoplastic resins that include a certain class of nucleating agent therein, and are able to be drawn at high ratios with such nucleating agents present, that the tenacity and modulus strength are much higher than other previously produced thermoplastic fibers (particularly those produced under commercial conditions), particularly those that also simultaneously exhibit extremely low shrinkage rates. Thus, such fibers require the presence of certain compounds that quickly and effectively provide rigidity to the target thermoplastic (for example, polypropylene), particularly after heat-setting. Generally, these compounds include any structure that nucleates polymer crystals within the target thermoplastic after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target thermoplastic without the nucleating agent during cooling. In such a manner, the “rigidifying” nucleator compounds provide nucleation sites for thermoplastic crystal growth. The preferred “rigidifying” compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, talc, certain sodium and lithium phosphate salts [such as sodium 2,2′-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive thermoplastic fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

A fifth harmonic wave is formed from a fundamental wave of P polarization via a second harmonic wave forming optical element 3, a third harmonic wave forming optical element 4, and a fifth harmonic wave forming optical element 6, and a second harmonic wave of P polarization is formed from a fundamental wave of P polarization via a second harmonic wave forming optical element 9. A fundamental wave of S polarization is combined with the second harmonic wave of P polarization described above by a dichroic mirror 13; furthermore, the fifth harmonic wave of P polarization, the fundamental wave of S polarization described above and the second harmonic wave of P polarization are combined by a dichroic mirror 10, and are incident on a seventh harmonic wave forming optical element 11. A seventh harmonic wave of S polarization is formed from the fifth harmonic wave and second harmonic wave of P polarization, and is combined with the fundamental wave of S polarization by being incident on an eighth harmonic wave forming optical element 12, so that an eighth harmonic wave of P polarization is formed.