Forming processes twin-sheet

Leading the processing growth was the expansion of twin-sheet and pressure-formed plastic products. Fueled mostly by advances in mold technology, material developments, and thermoforming machinery capabilities, technology improvements in the form of machine controls have led to machine designs that are faster and more consistent than was previously possible. As an example advanced materials and... 

Thermoforming and adhesive bonding or double-sheet forming can be used to make hollow or tubular shapes in many configurations. Twin-sheet thermoforming is a process that is generally used to produce large, flat, double-walled parts. 

The results of this twin sheet cold blow molding test led the way to what later became known as "SOM", or the slug oriented molding process. We had a successful combination of "cold" extrusion and blov -forming. 

Basic process/variations Processing conditions Materials Mold design Product design Secondary operations Twin sheet forming Decorating Trimming/recycling... 

Atomizers Atomization is the process of breaking up a continuous liquid phase into discrete droplets. Figure 24-22 shows the idealized process by which the surface area of a liquid sheet is increased until it forms droplets. Atomizers may be classified into two broad groups (see Fig. 24-23), pressure atomizers, in which fuel oil is injected at high pressure, and twin-fluid atomizers, in which fuel oil is injected at moderate pressure and a compressible fluid... 

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