Abstract: A blow-molded bottle of thermoplastic resin has a hollow body with a generally cylindrical side wall rotationally symmetric about a longitudinal axis of the bottle and an integral base merging with the side wall. The base is defined by an outer surface having a plurality of arcuately extending downward projections separated from each other by hemispherical segments extending from the cylindrical side wall to the longitudinal axis of the bottle. Each of the arcuately extending downward projections has a first inclined portion contiguous to the longitudinal axis, a second inclined portion situated radially outside of, and axially displaced downwardly from, the first inclined portion, a generally perpendicular ring segment having an upper edge united with the first inclined portion by a curved portion having a radius of between about 0.015 in. and 0.060 in., and a lower edge united with the second inclined portion.

Abstract: A system for establishing the manufacturing and/or production history of textile material (1) being produced in strip or sheet form, in which magnetizable data carrier means (4,5) is incorporated in the strip or sheet material during the production thereof; means (8) for magnetically implanting information characteristic of and/or relating to materials used and production and manufacturing conditions prevailing at predetermined operation stations, machines, locations or the like along the route taken by the textile material during the production thereof; and means (9) for reading or otherwise interrogating the magnetizable means or material for the purposes of deriving from said information/data signals utilizable for establishing said manufacturing and/or production history.

Abstract: An injection molding method for molding a product having a partly thin portion comprising the steps of: providing a molding die including a slide block disposed in one of male and female dies and having in cross section a dimension corresponding to a dimension of the thin portion of the product; defining a cavity between the male and female dies with maintaining the slide block in a retracted position; injecting a molten resin material into the cavity through a gate; and advancing the slide block to project into the cavity before the resin material is solidified, thereby filling the cavity with the resin material while forming the thin portion.