• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Vacum forming

Extracts from this document...


The most suitable method for batch production of my product is VACUUM FORMING. This is because all of the necessary facilities are readily available. It is used to manufacture a variety of products in thermoplastic materials. These products range in size from garden pond liners to food trays used in supermarkets. The first thing which is done in the process is the mould being attached to a support plate. ...read more.


Any trapped air remaining between the platen and the heated plastic sheet is then evacuated by a vacuum pump. Atmospheric pressure acting over the top surface completes the forming process by pressing the plastic sheet onto the mould. Once the plastic sheet is cooled down to below it's freeze point the air flow is reversed to lift the forming off the mould. ...read more.


? When using vacuum forming, it is necessary to have a 5-10� taper or draft angle on the side of the mould to enable the forming to be separated easily from the mould. It is also important to avoid undercuts as these will prevent the forming from realising. Many types of thermoplastics are suitable for vacuum forming, each one having strengths and weaknesses. Material Forming Temperature Definition ABS 159 Good Extruded Acrylic 160 Good Polycarbonate 200 Good Polyethylene 120 Fair Polypropylene 180 High Polystyrene (HIPS) 120 Good PVC 130 Fair ? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Resistant Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Resistant Materials essays

  1. The task has been set to make a hole punch (used to punch holes ...

    Materials and Measurements Now having planned the design of my hole punch I need to consider the material and measurements of each component. The table below shows the name of the component, the material I will be using, the measurements of it and the reasoning for the choice.

  2. My aim of this experiment is to recognize which material is the greatest sound ...

    have much time to carry out my practical, as if more time was allocated I could have taken more results and also the apparatus which I had used could only be used to a certain extent, this had limited my experiment as I was not able to use more sophisticated apparatus to measure the sound produced.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work