This category is designed for users to locate a top UK based plastic manufacturers and plastic moulding companies to produce their components. All companies have ISO9001 and are selected by PlastikCity based on reputation, financial stability and utilising modern, efficient equipment.
There are six main categories of moulding / plastic manufacturing, each utilised according to a number of factors. Below is a summary of each process. If you remain unsure as to which process is suitable to manufacture your product just email us on firstname.lastname@example.org with your requirements and we will be pleased to advise.
Injection moulding is a manufacturing process for producing parts by injecting material into a mould. Plastic material for the part is fed into a heated barrel, mixed, and forced into a mould cavity, where it cools and hardens to the configuration of the cavity. After a product is designed, usually by an industrial designer moulds (molds in USA) are made by a mouldmaker (or toolmaker) from metal, usually either steel or aluminium, and machined to form the features of the desired part. Injection moulding is widely used for manufacturing a variety of parts, from the smallest components to entire car body panels. Parts to be injection moulded must be very carefully designed to facilitate the moulding process; the material used for the part, the desired shape and features of the part, the material of the mould, and the properties of the moulding machine must all be taken into account. The versatility of injection moulding is facilitated by this breadth of design considerations and possibilities.
Plastic extrusion is a high volume process where material is melted and 'extruded' continuously through a tool (die) that forms a particular design of plastic profile or sheet in a continuous length. The product is then cut to the required length.
Blow moulding is a process by which hollow plastic parts are manufactured. The blow moulding process begins with melting down the plastic and forming it into a parison. The parison is a tube-like piece of plastic with a hole in one end through which compressed air can pass. The parison is then clamped into a mould and air is blown into it. The air pressure then pushes the plastic out to match the mould. Once the plastic has cooled and hardened the mould opens up and the part is ejected.
In essence, liquid or powdered plastic is poured into the gap between an inner and outer form, which is then heated then rotated /spun/inverted so that the plastic spreads evenly prior to cooling and setting. This is a slow process, but allows large hollow components with thick wall sections to be produced.
With this process, a sheet of plastic is heated and then drawn by vacuum over a profile to produce a three dimensional shape. Large surface areas can be produced, although wall thickness is limited.
Sometimes it is not practical to mould components, for example, volumes are uneconomical, the ‘form’ is complex, wall sections are very thick, or components are very large. In these instances, machining components from solid plastic, or fabricating a solution by combining a number of individual items can be the best option.
Machining engineering grades of plastic using CNC lathes, milling equipment, routers, laser cutters etc. can rapidly produce complex components with difficult to ‘mould’ features such as internal threads.
Large and heavy items can be manufactured by invisibly bonding components such as laser cut acrylic or perspex sheet.
Example Products: display units, tanks and very low volume parts.
PlastikCity has partners that offer very specific moulding applications that may be more suitable to your requirements. These include:
If your products apply to any of the above, please select the hyperlink to navigate direct to the section. After reading the processes that may be applicable to your product and you remain unsure just email us on email@example.com with your requirements and we will be pleased to advise.