K e y w o r d s F i l m casting, Longitudinal stretching, Transverse stretching, Modelling industrial processes. 1. I N T R O D U C T I O N Film casting (Figure 1) is a widely used manufacturing process for polymeric films production; other processes are blow casting and extrusion, now generally used for the production of low quality films. A general overview of fihn casting and other analogous...

We investigated the alloy composition of Mg-Ca-Zn alloys suitable for rapidly solidified powder metallurgy (RS PM) processing and tried to develop biomedical RS PM with high strength, ductility, corrosion resistance. The was Mg-1.0Ca-0.5Zn (at%) in ternary alloys. An combined additions 0.1 at% Y 0.03 Mn exhibited excellent performance a tensile yield strength 376±17 MPa, an elongation 14.1±3.1%...

in this study, damar batu (db) − a novel biomaterial− is evaluated for its potential application in pharmaceutical coating. db is a whitish to yellowish resin, characterized initially in terms of solubility, acid value, molecular weight (mw), polydispersity index (mw/mn) and glass transition temperature (tg). neat plasticized films of db are investigated for mechanical, water vapor transmission...

A convenient procedure for protein extraction from hair, nail, and wool were applied for chicken feathers. The velocities of protein extraction by the Shindai method were 1.1−1.8 fold faster than those by the conventional method. The protein components mainly consisted of β-keratin. Protein films with white color were formed from β-keratin solution by Pre-cast, Post-cast, and soft Post-cast met...

The isothermal structural relaxation of glassy, spin-cast polymer thin films has been investigated. Specifically, the thickness h of freshly cast poly(methyl methacrylate) thin films was measured over time using spectroscopic ellipsometry. The spin-cast films exhibit a gradual decrease in thickness, which is attributed to structural relaxation of the glass combined with simultaneous solvent los...

hot-melt extrusion is one of the most widely applied processing technologies in the plastic, rubber and food industry. today this technology has found its place in the array of pharmaceutical manufacturing operations. melt extrusion process are currently applied in the pharmaceutical field for the manufacture of a variety of dosage forms and formulations such as granules, pellets, tablets, supp...

We have developed a novel method of extracting proteins from human hair in the absence of detergent called the "Shindai Method". Using the protein solution consisting of hard alpha-keratins and matrix proteins prepared by this method, we developed two procedures for preparing hair protein films. The protein solution was mixed with trichloroacetic acid (TCA), perchloric acid (PCA) or guanidine-H...

Micro-extrusion process of miniature heat pipe (MHP) with axial micro grooves is particularly difficult due to ultra-large extrusion ratio and complex cross-sectional shape. In this study, the shape control 6063 aluminum alloy MHP fabricated by micro-extrusion was successfully overcome, microstructure evolution in using as-extruded billets studied. The results obtained finite element (FE) analy...