Abstract:
Heat treating UHMWPE by applying pressure with radial constraint at suitable times during a heating protocol reduces or eliminates cavitation, which is otherwise observed to occur when the UHMWPE is heated to a temperature above 300°C. Heat treated UHMWPE can undergo subsequent processing involving crosslinking, deformation, doping with antioxidant, and homogenizing or annealing. Heating during these steps can be carried out even above the onset melt temperature of the UHMWPE without loss of physical properties.
Abstract:
A processing line for manufacturing of one or more vacuum bag frame assemblies where the processing line has a main frame and a pair of furnace half chambers, where the main frame is arranged for supporting the vacuum bag frame assemblies, and the furnace half chambers are arranged for enveloping one or more of the one or more composite lay-ups and further arranged for moving relative the vacuum bag frame assemblies.
Abstract:
"PROCESS FOR MANUFACTURE OF SANITARY WARE ACRYLIC PLATES, OF SYNTHETIC GRANITE, USING CAST SYSTEM, WITH OR WITHOUT ABS REINFORCEMENT", presenting an inedited process for obtaining sanitary ware - synthetic granite type acrylic, providing for the execution of two polymerization stages, the stage called first polymerization (D), is defined by a step called first mould preparation (D1); a step called mould filling (D2), where the mould is filled with the first formulation; a step called polymerization (D3) where the moulds are placed inside an autoclave, this operation obeying a thermal curve where the initial temperature is 50°C, and after one hour this temperature is increased to 120°C and maintained constant until the end of the period with a total time of five hours, and after four hours begins the cooling step (D4) of the moulds and the plates polymerized inside it, passing to a mould cooling step (D4), plate demoulding step (D5); plate grinding step (D6) where the plates are grinded; a step called particle selection (D7). The stage called second polymerization (E) presents a first step called second mould preparation (El); a step called mould filling (E2); a step called degassing (E3); a step called polymerization (E4), where they are filled with the second formulation and placed inside the autoclave, whose thermal curve presents initial temperature of 50°C, increased to 80°C and maintained for one hour, after this period the temperature is increased to a level of 120°C and maintained until the end of the period of four hours, after which begins the step of second cooling of the moulds (E5), where the moulds return to the autoclave, with a new and final polymerization; a step of final demoulding of the plates (E6).
Abstract:
An improved autoclave for curing retread tires includes a chamber with circulating air flow having turbulence generating devices located in a middle lengthwise portion of the chamber. The turbulence generating devices include apertures to guide air from a supply duct into the chamber, and/or wedge-shaped elements of fins mounted on the interior wall of the chamber to disrupt the air flow and cause turbulence.
Abstract:
A mold assembly (20) designed for casting a layer for a golf ball is disclosed herein. The mold assembly (20) has two halves (22a) (22b) that each hold a plurality of mold inserts (30). Each mold half (22a) (22b) is composed of a carrier base (24), a carrier plate (26), a retainer plate (28) and a plurality of mold inserts (30). The multiple component aspect of each mold half (22a) (22b) allows for a more efficient transfer of heat during a casting process. Preferably, the mold assembly (20) is utilized to mold a polyurethane cover on a golf ball precursor product (25).
Abstract:
L'invention concerne un moule en bois (1) comprenant au moins une strate en bois de panneau de contreplaqué modifié thermiquement par transformation moléculaire spéciale (10) et au moins une couche fonctionnelle de matériau composite (11), caractérisé en ce que le moule (1) comprend une trame chauffante (20) sous forme d'au moins un réseau électrique (20a) disposée entre ladite au moins une strate en bois (10) et ladite au moins une couche fonctionnelle de matériau composite (11).
Abstract:
A method of repairing a composite structure or forming a component of a part is provided. The method includes releasably laying up of a first member that is curable at a first temperature at or above a constrained temperature limit of the composite structure or part, releasably laying up of a second member on the first member that is curable at a second temperature below the constrained temperature limit, curing the second member into a scaffold at the second temperature at the composite structure or part, transferring the first member and the scaffold remotely from the composite structure or part for first member curing and removing the cured first member from the scaffold for bonding of the cured first member to the composite structure or part.
Abstract:
The present disclosure provides for a process for manufacturing of dipped latex products without using any animal derived ingredients and dipped latex products produced by said process. The disclosed process successfully over comes drawbacks of drop in product yield (due to coagulum formation) and burst pressures caused by absence-of casein in latex formulation. Therefore, the dipped latex products so produced through the process have final composition similar to that of any other dipped latex products with casein except for absence of casein and having 0.8 phr of Sulphur as against 0.6 phr of Sulphur in routine manufacturing. The products also exhibit physical properties similar to that of any other dipped latex products with casein, such as burst pressure and burst volume.
Abstract:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Ermitteln der Bauteildicke eines Faserverbundbauteils während der Aushärtung in einem Autoklaven, wobei mit Hilfe eines Laser-Abstand-Sensors zunächst der Abstand zu dem Werkzeug und dann während des Aushärtungsprozesses kontinuierlich der Abstand zum Bauteil ermittelt wird, wobei aus dem Abstand zum Werkzeug und dem Abstand zum Bauteil dann auf die Bauteildicke geschlossen werden kann.