Overview
Injection stretch blow moulding is used for the production of high quality
containers.
Typical Materials Used:
Polyethylene - Terephthalate (PET)
Typical
Products Produced:
Carbonated and soft drink bottles, Cooking oil containers,
Agrochemical containers Health and oral hygiene products and Bathroom and
toiletry products
Overview
Inserts can either be incorporated at the time of the moulding process, or be
inserted as a post moulding operation. When incorporated as part of the
moulding process, the inserts can either be loaded by robot assistance or by
the process operator. If the inserts are applied as a post moulding operation,
they can usually be applied any time after the moulding process. In some cases,
they are inserted as part of a series of post moulding operations. This helping
to minimize the actual cost of insertion. The fundamentals of process speed
(and economics), and process repetition must be borne in mind when making the
decision when to apply the insert. It is not good practice to allow the cycle
time to vary from shot to shot; this can have an adverse effect on the quality
Where a plastics component is specified and the numbers to be used are not large, then machining the component becomes more economical.
Overview
EPP is a highly versatile closed-cell bead
foam that provides a unique range of properties, including outstanding energy
absorption, multiple impact resistance, thermal insulation, buoyancy, water and
chemical resistance, exceptionally high strength to weight ratio and 100%
recyclability. EPP can be made in a wide range of densities, from 15 to 200
grams per litre, which are transformed by moulding into densities ranging from
18 to 260 grams per litre. Individual beads are fused into final product form
by the steamchest moulding process resulting in a strong and lightweight shape.
Overview
Expanded polystyrene (EPS) is used for the production of a number of
applications. However its major application is as a protective packaging for
consumer electronic products and white goods. Its excellent thermal insulation
and mechanical protection properties make it ideal to package fish and other
foodstuffs. EPS also has applications in horticulture as seed trays. The
outstanding shock absorbency of expanded polystyrene packaging ensures the
protection of a broad range of products.
Overview
The necessity to cool or chill plastics processing machinery is mainly related
to thermoplastic materials. At room temperature thermoplastic materials
(polypropylene, nylon and PET etc) are solid. In order to shape them they must
first be heated to their molten temperature. When molten, they can then be
manipulated (injection moulded, extruded etc) to a new shape. When formed to
their new shape they must then be cooled to solidify them. Considerable amounts
of heat energy have to be extracted from the material, the tooling and the
machinery that is doing the forming.