摘要:
THE TIME LAPSE BETWEEN INITIATION OF ORIENTATION OF A CONTINUOUS PLASTIC TUBING AND BLOWING A CONTAINER THEREFROM IN A CONTINUOUS PROCESS FOR MAKING BLOW MOLDED CONTAINERS IS REDUCED BY HAVING ONE MOLD MOVING AWAY FROM AN OVEN TO DRAW A GIVEN LENGTH OF TUBING FROM THE OVEN AND THEN CLAMPING THE TUBING AT A LOCATION ADJACENT THE OVEN AND LETTING CONTINUED MOVEMENT OF THE MOLD
AWAY FROM THE OVEN ORIENT THE GIVEN LENGTH OF TUBING. ANOTHER MOLD CLOSES ON THE ORIENTED LENGTH OF TUBING AND A CONTAINER IS FORMED THEREIN.
摘要:
Transversely fibrillated films are prepared by embossing a molten thermoplastic film with transverse striations, transversely stretching the film while leaving an unstretched edge portion which, after stretching is at least 100 percent thicker than the embossed and stretched section. The film is then subjected to fibrillating stress under conditions whereby the thick edges are not affected. These edges then serve to hold the transverse fibers, resulting from the fibrillation, together in an integral structure for further handling. The fibrillation structure is useful for preparing laminar nonwoven fabrics having the filaments in different layers disposed at an angle to one another.
摘要:
In a continuously operated blow molding machine utilizing a pair of molding units, each mold unit having two mold halves, said mold units being closed at a backward position and movable to a forward position so as to orient a preformed tube in the forward position, the tube being blown into a container, said mold unit opening and moving to the backward position without any interference with the other mold unit. Each mold half consists of a neck forming and a body forming component slidably connected to each other by a sliding guide means for forcing axially the tube inside of the mold cavity so as to relieve longitudinal orienting stresses and provide fully formed threads in the threaded neck portion of the container.
摘要:
A PROCESS FOR SPREADING A GRAPHITE FIBER TOW INTO A MASS OF SUBSTANTIALLY INDIVIDUAL GRAPHITE FILAMENTS IS PROVIDED. SPREADING OF THE FILAMENTS IS ACHIEVED BY VIBRATING THE GRAPHITE TOW IN AIR PULSATING AT A FREQUENCY AND IN TENSITY SUFFICIENT TO COUPLE THE ENERGY OF THE PULSATING MEDM TO THE GRAPHITE TOW. VIBRATION OF THE TOW IN AIR
CAUSES SEPARATION AND SPREADING OF THE FILAMENTS IN THE TOW.