An overmoulding is a combination of a part or assembly and a plastic material moulded fully or partially around the surface of this.
Both the part and the overmoulding material may be either hard or soft. As an example, the overmoulding material and geometry can add a function to the finished overmoulded part, or simply act as an unremovable cover.
It is also possible to overmould complete assemblies including electronics, as already made by Bergen Plastics AS achieving a watertight rugged assembly.
There are many possibilities as to how an overmoudling can be made and which functions or properties can be achieved.
Parts and features are moulded onto cables both automatically and semi-automatically.
We have developed automatic special purpose machinery for the handling of cables in combination with injection moulding machines.
The moulding of cable bend relieves and cable overmouldings can be executed in one step. A process has been developed to mould a bend relief and a watertight cable harness in one step.
Hybrids and metal overmoulding
Combining plastics and non-plastic materials enables manufacture of parts with different properties with the geometry of a typical plastic part.
It is possible to combine several materials to achieve optimal results - for instance the stiffness of metal, the complex geometry of plastics and the sealing effect of an elastomer. Care must be taken when designing the hybrids, to ensure good distribution of load and stress to the different components of the hybrid.
Bergen Plastics have designed a worm wheel of metal and plastics combining the cost effective production of complex threaded shape and the rugged thoughness of the steel. The worm wheel can be repeatedly operated with ordinary crome spanners in rough environments without causing any chipping or damage to the product.
Bergen Plastics have experience with overmoulding of RFID tags on plastic products. This technology can successfully be used on foodpackaging, technical packaging, technical products and in combination with assemblies.
RFID Tags containing a desired amount of data are moulded into plastic parts. Using a scanner you may read or write to the parts as you like. Different information may be stored onto each tag, making each part unique. The information is safely stored inside the part, in a rugged design for though handling.
Intelligent Components have numerous applications and capacities.
Multicomponent moulding is combining two or more plastic materials in one part. Combining different materials enables designers to enhance the performance of components by utilizing the most benefitial properties of different materials in the construction.
Multicomponent moulding eliminates the need for individual parts serving one function each and assembly operations to achieve the same results, thus being more cost effective.
Materials are injected sequentially and may be integrated parts of each other or mechanically interlocked. Parts can be moulded in an extensive range of materials, from soft to hard, and from commodity to engineering materials.
Bergen Plastics Group manufacture multicomponent parts in fully automated machinery.
The first multicomponent part was produced at Bergen Plastics in 1973. We are today producing more than 100 different articles, and deliveries has reached more than 100 million single components.