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MANUFACTURING TECHNIQUES - HDPE TABLE TOP

V. Ryan 2008

 

The folding table is essentially composed of three parts, the table top, the legs and aluminium/steel fittings. The top is manufactured through a process called injection moulding. HDPE (high density polyethylene) is ideal for this type of manufacturing technology (see diagram below)

 
SIMPLIFIED DIAGRAM
The diagram below shows the table top inside the cooling mould. When the mould opens the HDPE top is taken out. Only a small amount of trimming and smoothing is needed before the top is ready to fit to the legs.

ALUMINIUM/STEEL LEGS: The legs are manufactured from either aluminium or steel round section tube. The tube is first cut to length using a hacksaw or if speed is important a powerful tube cutter is used. This is more like a guillotine which slices through steel or aluminium with ease.

The tube ends are then de-burred (sharp edges removed) using a hand file.

 

A pipe/tube bender is then used to produce the tight curves.

ALUMINIUM / STEEL FITTINGS: The fittings are manufactured through the casting procedure. Molten aluminium or steel is poured into a special mould and allowed to cool. When taken from the mould rough edges are removed and they are ready for fixing to the table top with self-tapping screws.
The table is ready to be assembled.

 

 

 
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