Zobrazeno 1 - 10
of 289
pro vyhledávání: '"W I Patterson"'
Publikováno v:
Plastics, Rubber and Composites. 28:47-61
Cavity pressure plays an important role in determining the quality of injection moulded articles. However, the non-linear and time varying behaviour of the process causes difficulties in implementing an efficient control system, since these generally
Publikováno v:
International Polymer Processing. 12:385-395
Cavity pressure plays an important role in determining the quality of injection molded articles. The non-linear and time-varying nature of the process causes difficulties in implementing efficient control systems, which usually employ linear, time-in
Publikováno v:
International Polymer Processing. 12:4-10
An in-line rheometer previously described was evaluated for use in the upgrading of post-consumer, recycled HDPE. Feed resin of variable melt index was brought to a preset, uniform viscosity by peroxide induced crosslinking in a twin-screw extruder.
Publikováno v:
International Polymer Processing. 11:352-362
A non-linear mathematical model of the thermoplastics injection molding cycle is presented. The model is formulated based on the conservation equations for the filling, packing, and cooling phases. The whole process is divided into subsystems includi
Publikováno v:
Polymer Engineering & Science. 36:2840-2851
A novel in-line melt rheometer (ILR) measured viscosity to control ionomer neutralization during reactive extrusion. The ILR has the advantages of an in-line location to minimize measurement delay and a “partial Couette” flow geometry, which affo
Publikováno v:
Polymer Engineering & Science. 36:2467-2476
The evolution of cavity pressure during the injection molding cycle has a strong influence on the quality of the molded part. The injection molding cycle can be divided into three stages : filling, packing, and cooling. In a previous paper, the autho
Publikováno v:
Polymer Engineering & Science. 36:1272-1285
Because of its versatility, cost effectiveness, and ability to produce intricate shapes to tight specifications, the injection molding process is widely used in plastics processing. Mold cavity pressure plays an important role in determining the qual
Publikováno v:
Advances in Polymer Technology. 15:17-28
Publikováno v:
International Polymer Processing. 10:3-9
A simple optical on-line residence time distribution (RTD) measurement technique has been developed. Changes in extrudate light transmittance are monitored by a photomultiplier. A He-Ne laser is the light source with carbon black as the tracer. The R
Publikováno v:
Polymer Engineering & Science. 34:1589-1597
A light scattering technique using a normal-incidence polarized light beam for the characterization of skin/core simulated polymer blend samples is described. The patterns of reflected, polarized scattered light from an inhomogeneous blend were captu