Gate Location and its Impact to Flowing Characteristics of Plastic Moldings

Abstract

Paper deals with simulation analysis of thermoplastic flowing in plastics product. As there is a demand in plastic products, plastic industries are growing in a fastest rate. Hence plastic injection molding process begins in manufacturing of complex shapes, in this process optimum gate location is one of the important criteria in mold design. Knowledge of ideal flow properties of thermoplastic materials give us a very good starting position for design of thermoplastics products which will be made by injection molding. By simulation software Plastic Advisor was compared injection parameters for the mold with varying gate locations. Simulated thermoplastic product is made from polycarbonate and is using for the drum washing machine as console window.

Mechanical properties of surface layer of unfilled polypropylene

“…As a standard "perfect" crystal terephthalic acid with the peak at 2 4 = 17.4 ° and the half maximum breadth 0.3 ° 2 4 was chosen [7][8][9][10][11][12][13][14][15][16][17].…”

“…This is used in many applications such as radiation-sterilized medical and pharmaceutical components, food packaging materials and cosmetics [5]. A literature survey [6][7][8][9][10][11] indicates that effects of 14.89 MeV electron irradiation on polyethylene and polystyrene in the dose range of 57.6-576 KGy showed a greater red shift in absorption edge of polyethylene as compared to polystyrene [6]. Whereas, the enhancement in the thermal properties, dielectric constant, dielectric loss and crystallinity of 2 MeV and 1.5 MeV electron irradiated polypropylene has also shown considerable modifications [7,8].…”

Micro-hardness of surface layer of irradiated Polybutene Terephthalate (PBT)

“…Poisson's ratio (ν) of the polymer was 0.3. The indentation hardness (H IT ) was calculated as maximum load (F max ) to the projected area of the hardness impression (A p ) according to: [7][8][9][10][11][12][13][14][15][16][17] …”

Mechanical Properties of Injection Molded and Compression Molded Samples from Nature-Butadiene Rubber

“…cutting off a compression molded plate. [1][2][3][4][5][6][7][8][9][10][11][12][13] This distinct way of producing testing samples and final products can result in different mechanical properties. Injection molding of rubber compounds is used mainly in the automotive industry to produce a large assortment of products which are more demanding as for the shape and dimensional precision.…”