|CLICK HERE FOR INDEX PAGE|
|DRAPING / DRAPE FORMING OF PLASTICS|
V.Ryan © 2022
|PDF FILE - CLICK HERE FOR PRINTABLE WORKSHEET|
|CLICK HERE FOR POWERPOINT VERSION OF WORKSHEET|
|Draping is ideal when shaping / forming plastics, as it is a relatively cheap and simple process. It involves heating a thermoplastic (e.g. acrylic) in an oven and then pressing it against a single mould (sometimes called a mandrel or former). When the plastic has cooled, it remains in the shape / form of the mould.
The process does not involve the use of a vacuum former, keeping costs down. The moulds / formers are usually hand made, from softwood and accurately finished.
|Consider securing the former / mould in a vice before ‘forming’ the thermoplastic. Allow enough room for both hands to hold the thermoplastic in position.|
|APPLYING LOCALISED HEAT TO A SPECIFIC AREA|
|If a small area of the thermoplastic is to be formed / shaped, simply heat the specific area with a heat gun. Take care to keep the heat gun moving over the area you want to form / mould. Holding the heat gun too close to the thermoplastic and in the same place, can cause the surface to ‘bubble’ and deform.|
|1. USE A HEAT GUN TO ‘HEAT’ THE THERMOPLASTIC, IN THE AREA TO BE FORMED.
WEAR HEAT RESISTANT GLOVES.
|2. PRESS THE PLIABLE / FLEXIBLE PART OF THE THERMOPLASTIC OVER THE MOULD AND HOLD IT IN POSITION.|
|3. WHEN THE THERMOPLASTIC IS COOL, HAND PRESSURE IS REMOVED AND THE ‘PLASTIC’ WILL STAY IN THE SHAPE OF THE FORMER.|
|CLICK HERE FOR EQUIPMENT AND PROCESSES INDEX PAGE|