POLYMERS MANUFACTURING PROCESSES-HHTA

Hannia Hazel Terrones Alcaraz

POLYMERS MANUFACTURING PROCESSES

The conversion of raw polymers into finished products involves a series of polymer manufacturing processes.

In most manufacturing there will be a number of finishing steps. The advantage of polymer processing over manufacturing with more traditional materials is that there are opportunities for cost savings through minimising finishing processes.

Cyclic method (Complex Geometries)

Extrusion based

Extrusion is a process in which polymeric materials, in the form of powder, granules, trip or melt, are converted into products of controlled cross-section in a continuous fashion. The material (pellet) is heated by friction with the spindle and the cylinder and by the electric resistors.

Blowextrusion

Directextrusion

Indirect extrusion

Coextrusion

Injection process

The injection process consists of introducing a molten plastic material into a mold under high pressure. In said mold that will give it the shape, it will cool and then the shaped part will be extracted.

Process

Material

Relation

Tools

Geometry

Thermoforming Process

Vaccum

Pressure

Thermoforming is a manufacturing process where a plastic sheet is heated to a pliable forming temperature, formed to a specific shape in a mold, and trimmed to create a usable product. A plastic sheet is heated in an oven then stretched into or onto a mold and cooled to a finished form.

PETG

ABS

HDPE

HIPS

PVC

PET