摘要:
Described are methods of making a paint roller using an adhesive made from a compound of polypropylene and calcium carbonate having between 5% and 66% calcium carbonate by weight. Described are methods of making a paint roller using preformed strips or core material made from a compound of polypropylene and calcium carbonate having between 5% and 66% calcium carbonate by weight. Described are methods of making a paint roller using a composite cover material made from a compound of polypropylene and calcium carbonate having between 5% and 50% calcium carbonate by weight. One or various compounds may be used to form portions of one or multiple components that make up the paint roller, including, for example, the thermoplastic strips, adhesives and/or the backing of a composite cover material. The materials can be assembled in a continuous manufacturing process.
摘要:
Described are methods of making a paint roller using an adhesive (135) made from a compound of polypropylene and calcium carbonate having between 5% and 66% calcium carbonate by weight. Described are methods of making a paint roller using preformed strips or core material (145) made from a compound of polypropylene and calcium carbonate having between 5% and 66% calcium carbonate by weight. Described are methods of making a paint roller using a composite cover material (125) made from a compound of polypropylene and calcium carbonate having between 5% and 50% calcium carbonate by weight. One or various compounds may be used to form portions of one or multiple components that make up the paint roller, including, for example, the thermoplastic strips, adhesives and/or the backing of a composite cover material. The materials can be assembled in a continuous manufacturing process.
摘要:
An apparatus (10*) for manufacturing extruded coiled tubes (TS) for medical purposes. The apparatus comprises: - rotary shafts (12) protruding from a spindle (11), each rotary shaft (12) being coupled to a respective flexible shaft (13) resting on a series of supporting elements (DSC) substantially equidistant to each other and supported by a main central shaft (19); - at least an extrusion head to extrude a ribbon (PT), and at least an extrusion head to extrude a rib (NR) ; the ribbon (PT) and the rib (NR) being co-extruded, side by side, and being wound on an ideal surface formed by the external surfaces of the flexible shafts (13). The apparatus (10) is characterized in that , for changing the pitch with which the rib (NR) is wound on a base tubular element (ETB), formed on its turn by the winding coil of the ribbon (PT), at least two twisting bars (BT) operated by a crank (MN) are used to rotate the supporting elements (DSC) with a pre-defined angle.
摘要:
A method of continuously forming heated conduit (17) includes performing a tape (31) for winding onto a spiral pipeline former. At least one conductor (4,5) is positioned adjacent to the centreline of and parallel with a thin polymer ribbon. The ribbon is folded in half to encapsulate the conductors. The folded ribbon is thermally welded to itself. The folded, welded, ribbon is passed through a creaser, which forms a crease midway across the folded ribbon. The creased pre-formed ribbon is formed into a conduit in a continuous process on a spiral pipeline former (24).
摘要:
A method of continuously forming heated conduit (17) includes performing a tape (31) for winding onto a spiral pipeline former. At least one conductor (4,5) is positioned adjacent to the centreline of and parallel with a thin polymer ribbon. The ribbon is folded in half to encapsulate the conductors. The folded ribbon is thermally welded to itself. The folded, welded, ribbon is passed through a creaser, which forms a crease midway across the folded ribbon. The creased pre-formed ribbon is formed into a conduit in a continuous process on a spiral pipeline former (24).
摘要:
The invention relates to a method and to an apparatus for producing a tubular lining (30) for lining sewers and pipelines, which has an inner tubular film (32) that is closed circumferentially and at least one fiber strip (34) wound onto the inner tubular film (32) and impregnated with a curable reactive resin, wherein the inner tubular film (32) is drawn in a winding apparatus (40) onto a holding tube (8) which is mounted on one side and arranged substantially horizontally, at the free end (10) of which there is arranged a winding tongue (12) having a transport device (16), which, during the circumferential winding of the fiber strips (34), transports the inner tubular film (32) in a feed direction (36) to a stationary supporting surface (18) which is arranged at the free end (10) of the winding tongue (12) and over which the tubular lining (30) is conveyed further, wherein the inner tubular film (32) is drawn over the free end (13) of the winding tongue (12) onto the holding tube (8) counter to the feed direction (36).