摘要:
A post mold cooling system for cooling preforms is disclosed. The post mold cooling system includes a take-out device that is configured to remove preforms from a molding area and deliver them to a post mold cooling area, and a cooling station that is configured to cool the preforms. A first transfer device is configured to transfer the preforms between the take-out device and the cooling station, and a second transfer device is configured to transfer the preforms away from the cooling station.
摘要:
Plastic aerosol container (12) having a thermally crystallized neck finish (18) configured to receive an aerosol valve assembly (1) and an expanded strain oriented aerosol container body (12) integral with the neck finish. A junction between the thermally crystallized neck finish and the strain oriented container body defines a pull point at which strain orientation begins.
摘要:
An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.
摘要:
A blow formed preform (1') of stacked structure, wherein a diametrally diverging tube part (4') is diametrally diverged downward, a bottom shell part (7') is formed in the shape of a parison (P) formed by diametrally diverging the portion thereof formed at the bottom shell part (7') by blow forming, a diametrally increased step part (3') having a larger diameter lower part is formed on an inner peripheral surface portion at any position in an area ranging from near one position opposed to a neck ring (3) to the upper end part of the diametrally diverging tube part (4'), and the diameter of a shell tube part (5') is diametrally diverged downward to form a diametrally diverged lower end part (6') at the lower end part of the shell tube part (57) so as to form the entire lower end part including the bottom shell part (7') in a large dwelled shape, whereby, since a material is prevented from being built up to increase the dimensional accuracy of the overall wall thickness so as to provide a bottle body having the stacked structure without any visual deformation.
摘要:
A method for forming a plastic prosthesis bearing, net-shape bearing or near net-shape bearing is provided. The method includes providing a cross-linked plastic resin preform in a volume sufficient to accommodate the bearing and molding the cross-linked preform. The molding is accomplished by applying heat and pressure to form the preform into a desired solid plastic shape. The heating and pressure is sufficient to melt the plastic resin so that the plastic resin flows under pressure and quench remaining free-radicals.
摘要:
A resin molded article having a highly expanded undercut shape and a uniform wall thickness distribution is produced with good productivity by forming a parison as an intermediate molded article (5) by injection molding a thermoplastic resin, expanding said parison in open molds (3,6) prior to blow molding of the parison (5) in the final shape, then closing the molds (3,6), and blow molding said parison in the closed molds (3,6) to form the final shape of the article.