摘要:
Annular elastic band for retaining objects of various shape and size, which is constituted by a film of plastic material with ring-like extension and with thickness comprised between 6 µm and 300 µm. Such annular band (1) is composed of at least two elongated tape-like bands (2, 3), each of which provided at its ends with junction flaps (27, 28) which are superimposed on the junction flaps (27, 28) of the other band (2, 3). Fixing means (4) are provided for fixing together the superimposed junction flaps (27, 28) of the two bands (2, 3), each of which comprising at least two external layers (9) composed of a first extrudable plastic material, and an internal layer (10) composed of a second extrudable plastic material, interposed between the two external layers (9) and composed of at least two superimposed internal substrates (10') preferably made of polyethylene and closely joined together via adhesion by means of penetration of polymer chains of each substrate (10') in the other substrate (10') via collapse with hot compression.
摘要:
In one aspect, there is a method of making a composite skin (199) for a tiltrotor aircraft including providing a first skin (201) in a mold (220), the first skin (201) having a periphery (201p) defined by a forward edge (201a), an aft edge (201b), and outboard ends (201c, 201d); providing a plurality of honeycomb panels (203) having an array of large cells (205) onto the first skin (201), each cell having a width of at least 1 cm; assembling the plurality of honeycomb panels (203) along the longitudinal axis of the first skin (201) to form a honeycomb core (207) having an outer perimeter (207p) within the periphery (201p) of the first skin (201); positioning a second skin (211) onto the honeycomb core (207), the second skin (211) having an outer perimeter (211p) within the periphery (201p) of the first skin (201); and curing an adhesive to create a bond between the first skin (201), the honeycomb core (207), and the second skin (211) to form a composite skin (199).
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:
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:
The invention relates to a method for producing a tubular insulator with a coated inside surface, in which method a tubular insulator (1) is initially produced. In a method according to the invention, an inner coating (5) is prefabricated in a sock-like shape and inserted in the tubular insulator (1); overpressure is created within the inner coating (5) to press the inner coating against the inside surface (4) of the tubular insulator (1); the inner coating (5) is attached by heat to the inside surface (4) of the tubular insulator (1) and is then allowed to cool. The invention also relates to a tubular insulator with a coated inside surface produced by the method.
摘要:
A system that enables a cutter head to pivot for improved alignment with a cutting face or die is disclosed. The system includes a cutter hub and a driveshaft hub mated with a plurality of round, spherical, or ovoid surfaces to enable the cutter hub to pivot with respect to the driveshaft hub. The system can include a plurality of alignment pins with spherical surfaces to transfer torque from the driveshaft hub to the cutter hub. The system can also include a cutter head, which can include a plurality of cutting blades. The system can be used in cutting machinery, such as a pelletizer, where alignment of the cutting head and the cutting die (or other cutting surface) is desirable.