Abstract:
A container is provided with a cylindrical sidewall. A top flange projects from the cylindrical sidewall in a first direction by a first distance. A bottom flange projects from the sidewall in the first direction by a second distance that is less than the first distance. The top flange and the bottom flange extend circumferentially around the sidewall. A gap is formed between the top flange and the bottom flange.
Abstract:
Erfindungsgemäß ist eine Vorrichtung zum Blasformen eines Blasschlauchs geschaffen, mit einer Blasform, in deren Formhohlraum der Blasschlauch zumindest teilweise aufzunehmen ist, und mit einem in den Formhohlraum einfahrbaren Formschieber, bei der mit dem Formschieber ein Wandbereich des Blasschlauchs derart in den Formhohlraum hinein bis zu einem gegenüberliegenden Wandbereich des Blasschlauchs zu bewegen ist, dass es zu einer Verklebung der beiden Wandbereiche kommt.
Abstract:
The invention relates to a method for producing a substantially tubular conduit resonator consisting of a number of plastic components, said resonator having one or more tubular moulded parts arranged inside and connected to a tubular hollow body. The resonator is characterised in that in a first moulding step the moulded part is produced between the extruder core and the outer tool using an injection moulding process, in a second moulding step the moulded part with the extruder core then acts as an inner tool for a blow moulding process, in which in the second moulding step the hollow body is extruded and blow moulded between the moulded part and the surrounding outer tool. Fig. 2
Abstract:
The invention relates to a device and a method for producing a preform having a base geometry optimized for the subsequent stretch blow moulding process. The preform produced in the injection-moulding tool is removed in a cooled removal sleeve and cooled in the shaft by intensive contact cooling, while as far as possible no cooling contact is made with the top of the preform on account of a special contour of the cooling sleeve. On account of the reheating of this top which is possible as a result, the latter can be mechanically deformed into a new geometry which is more advantageous for the blow moulding process and thus the wall thickness of said top can also be influenced. In the subsequent blow moulding process, such a deformed preform has primarily the advantage that the plastics material distributed better in the bottle can result in considerable material savings and higher quality bottle bases.
Abstract:
According to the invention, an inflatable balloon cuff comprising: a proximal opening and a distal opening in a wall of the balloon cuff; and a tapered section along at least 50% of the length along an axis of the inflated balloon cuff, wherein at least a portion of the tapered section is configured to form a seal against a tracheal wall of a patient, wherein the tapered section comprises a balloon wall with continuously varying thickness along the tapered section, and wherein the tapered section comprises: a sealing portion, wherein the sealing portion is adapted to form a wrinkle-free band at least 1 millimeter in length against a patient's tracheal wall when inflated; a wrinkled portion, wherein a largest diameter of the wrinkled portion is larger than a tracheal diameter such that the wrinkled portion forms a wrinkled band against a patient's tracheal wall when inflated and wherein the wrinkled band is longer than the wrinkle-free band; and
wherein the wrinkle-free band has a first balloon wall thickness greater than a second balloon wall thickness in the wrinkled portion.
Abstract:
There is provided a tubular workpiece for blow-molding into an inflatable balloon component. The tubular workpiece is a raw tube having a lumen and composed of a thermoplastic polymer, the tube having an asymmetric wall thickness such that when the tube is preheated in a mold to a temperature sufficient to soften the material of the tube and inflated with a gas to generally uniformly stretch the material of the tube, the tube forms a balloon component. The balloon may be non-uniform in wall thickness depending on the type of mold used. The balloon may be attached according to conventional means to a hollow tube to produce a tracheostomy device.
Abstract:
A method for fabricating a stent comprising: radially deforming a polymer tube (301) for use in fabrication of a stent from the deformed tube, wherein the radial deformation propagates along the tube axis as the tube is heated (330) along the axis, the polymer tube having an internal tube pressure (325) higher than ambient; controlling the deformation temperature to provide a selected fracture toughness to a stent fabricated from the tube wherein the temperature is controlled to provide a morphology of the deformed polymer tube comprising an amorphous matrix including dispersed crystalline regions and wherein the crystalline regions have a size less than about 15 micrometers; and fabricating the stent from the deformed tube.