polymer finishes

Question 1

self finishing

Answer 1

• require no additional secondary finishing process

Question 2

overmoulding

Answer 2

• moulding a second polymer over specific parts of a product
• provides areas of grip or texture
• through two injection moulding moulds or twin shot injection moulding

Question 3

two injection moulding moulds

Answer 3

• one mould for product one mould for grip areas
• once product is injection moulded, then placed in second mould for overmoulding

Question 4

twin shot injection moulding

Answer 4

• main mould creates product
• then opens slightly and rotates 180 degrees
• mould closes and second injection applies the second polymer

Question 5

acrylic spray paints

Answer 5

• enhance aesthetics
• fast drying
• water resistant when dry
• provides extra protection against UV light and weathering
• used in automotive industry as can have range of colours without having to change pigments during manufacture

Question 6

adding pigments

Answer 6

• added during manufacture or to the stock form
• includes smart materials pigments
• can be added to gel coats when laying up GRP
• used for kitchen chopping boards