Abstract:
Novel one-step calendering process wherein two different polymer masses are fed into the same nip to provide discrete molecularly oriented strata; and novel sheet materials and adhesive tapes prepared thereby.
Abstract:
Appareil et procédé de cathéter à double passage. L'appareil présente un corps de cathéter allongé (12) adapté pour être inséré dans une veine ou une cavité corporelle contenant un fluide d'un patient, tel que l'oreillette droite du coeur. Le corps du cathéter (12) présente un septum (36) situé longitudinalement à l'intérieur du corps du cathéter (12) de manière à diviser l'intérieur du cathéter en premier et second passages (32, 34). Le septum (36) est décalé de l'axe central longitudinal du cathéter de sorte que les surfaces en coupe transversale des deux passages (32, 34) sont de tailles différentes. Le premier passage (34) présente une taille en coupe transversale relativement grande de sorte qu'un débit volumétrique suffisant de sang à oxygéner peut s'écouler au moyen d'un drainage par gravité, dans le premier passage (34), tandis que le second passage (32) est plus petit tout en étant encore suffisamment grand, de sorte qu'un débit volumétrique sensiblement égal de sang ayant été oxygéné, peut être renvoyé sous pression dans le second passage (32).
Abstract:
An apparatus for applying a liquid coating to a cylindrical object (22) comprising substantially circumferential conduits (12) containing one or more inwardly placed apertures (32).
Abstract:
Novel methods for preparing masking tapes by coating a thin layer of polyolefinic material onto a lightweight nonwoven cloth and then applying a thin layer of adhesive, preferably a hot melt adhesive onto the opposed surface of the nonwoven cloth; and novel masking tapes prepared thereby. In the preferred embodiments, the polyolefinic layer consists essentially of a thin stratum of a high density polyethylene and a thin layer of low density polyethylene.
Abstract:
A pipe weld cover apparatus comprising a sensor and an associated resin dispenser (12) wherein the sensor (11) locates a weld, transmits the information to the dispenser (12) and actuates the dispenser (12) to dispense a resin onto the weld (50) so as to flatten the weld projection thereby allowing for uniform and uninterrupted surface contact with a later applied tape coating system.
Abstract:
Novel one-step calendering process wherein two different polymer masses are fed into the same nip to provide discrete molecularly oriented strata; and novel sheet materials and adhesive tapes prepared thereby.
Abstract:
A tape wrap system adapted for protecting tubular articles comprising an innerwrap covering the surface of the article to be protected and an outerwrap placed over said innerwrap, said innerwrap comprising an impact-resistant polyolefin layer carrying a thermosetting adhesive layer on its inner surface, said outerwrap comprising an impact-resistant polyolefin layer having heat fusible properties and/or an heat fusible layer on either or both surfaces thereof, said tape wrap system fusing said innerwrap and outerwrap together when heated and thereafter cooled.
Abstract:
A method of treating articles with a mixture of flammable gas (such as ethylene oxide), air and an inert gas which makes possible reuse of the ethylene oxide or other flammable gas for an indefinite number of successive treatment cycles involves refortifying the gas mixture with flammable gas when necessary. Non-flammability is maintained by removing air from a treatment chamber before the mixture is admitted into the chamber by the evacuation of the tank to a predetermined pressure, then admitting an inert gas to the tank to a predetermined pressure, and then subsequently removing the resulting air and inert gas mixture from the tank by evacuation to a predetermined pressure, the air removal resulting in an air proportion less than or equal to that proportion residing in the treatment mixture that is maintained in a holding tank.
Abstract:
A dressing for a wound of a patient having, a base sheet (12) for contacting the skin of the patient, with the base sheet having an opening for placement over the wound. The dressing has a vent providing controlled leakage of fluid along a path from the wound through the opening of the base sheet.