The invention relates to polyaryl ether ketones with low contents of residual materials, whether they are residual monomers or solvents of the synthetic process.

The invention relates to polyaryl ether ketones with low contents of residual materials, whether they are residual monomers or solvents of the synthetic process.

The invention relates to a process for synthesizing polyaryl ether ketones with low contents of residual materials, whether they are residual monomers or solvents of the synthetic process.

The inventive concept discloses a completely integral ball valve manufactured by an injection molding process. The device comprises a valve core, a valve housing, a valve control handle, and inlet/outlet flow pipes, all forming an integral structure. The valve core is the primary component of the ball valve, and is comprised of a spherical enclosure, a valve ball, left and right leakage seal rings, a spherical enclosure cap, a valve stem affixed to the valve ball, and a valve handle. The valve core, valve housing, and left and right intake/outflow pipes are integrally assembled by injection molding. The injection molding process gives the ball valve higher flexion strength and greater durability as compared to the typical sweat soldering process. Precisely dimensioned mold sections ensure the accuracy of dimensions, fittings, and tolerances of the ball valve components during the injection molding. Primary materials used are polypropylene and high-density polyethylene

A vibration dampening tape for attaching a gripping member and method of use is provided. More particularly vibration dampening tape including a layered strip with a polymeric core.