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Plastic Injection Molding

Plastic injection molding is the most common method of producing parts out of plastic material. This Plastic Injection Molding program was scripted by renown plastics industry expert, Irvin I. Rubin, and focuses on the injection molding machine, the injection mold, and the injection machine controls to illustrate the injection molding process. The Injection Molding Machine segment covers in detail both the injection system and the clamping system. In step by step progression, thermoplastic material is followed from its raw material state through the melting process and onto it's injection into the mold. Throughout the sequence, various components of the injection machine are explained, including the reciprocating screw, and the various machine platens. The Injection Mold segment details and defines mold terms as the molten thermoplastic material is formed, cooled, and ejected as a final part. Also featured are the common mold types, including the two-plate cold runner mold, three-plate cold runner mold, the hot runner mold, and the insulated runner mold. The Injection Machine Controls segment features the functions of the various controls and the use of computers in mold design and construction.

Plastic Thermoforming

Plastic thermoforming is the process of producing parts by heating and shaping plastic sheet and film. This Plastic Thermoforming program highlights both cut sheet and roll fed thermoforming operations, and features details on the various thermoforming process components. The Thermoforming Process Components segment explores the materials, clamping systems, heating systems, thermoforming mold types, forming forces, and trimming processes. The basic thermoforming methods are also examined, including: drape thermoforming, cavity thermoforming, pressure thermoforming, plug assist thermoforming, and twin sheet thermoforming.

Plastics Assembly

The Plastics Assembly section covers the many fastening and joining methods used to produce plastic parts. Included are segments on snap-fit fasteners, the use of hinges, mechanical fasteners, adhesive and solvent bonding applications, and the various plastic welding processes, including: spin welding, hot-gas welding, ultrasonic welding, vibration welding, heat staking and ultrasonic staking.

Plastics Finishing

This Plastics Finishing program includes information on the array of plastics finishing processes, arranging them into four categories: degating, deflashing, cleaning, and decorating. The Degating section includes segments on manual degating and the various automated tooling devices. The Deflashing section covers the cutting and trimming, media blasting and cryogenic deflashing processes. The Cleaning segment features the ways in which contaminants infiltrate the molding process and how parts are cleaned for secondary decorative operations. The Decorating section features lengthy examinations of the following processes: painting, plating, vacuum metallizing, pad printing, hot stamping, silk screening, and fill-and-wipe.

Plastics Finishing Introduction

This Plastics Finishing program includes information on the array of plastics finishing processes, arranging them into four categories: degating, deflashing, cleaning, and decorating.