what is 2 components molding ?
Since the sixties 2 components / components injection molding, also known as multi-component injection molding is, applied.
With 2 c injection moulding technology two materials with different properties, colors or levels of hardness are processed in one or 2 injection molding cycles , without using assembly, into one end product.
At 3 k molding this is done this with three different materials. The choice for a multi-component injection molding process is usually based on a cost advantage, design features or esthetic preferences. The techniques at 2 k injection molding are also used in the 3 k injection molding process. That is why 2 k and 3 k injection molding even if plural-component spray casting are discussed.
What are the benefits of multi-component injection molding?
Benefits of multi-component molding compared to single injection molding are:
From around 50,000 products this technology can offer a cheaper solution than multi-component molding parts than using single injection molded, followed by assembling. This does depend on product features, such as the product size and choice of materials;
A better connection by the chemical or mechanical bond between the different materials, with a good choice of materials, then the los assembling the parts;
Gives greater design freedom with different materials in a single product;
From an aesthetic point of view it may be more attractive, because the close seams are Delete repeated word:
Disadvantages of 2 or multi components injection molding
The multi-components molding technology has a great range of different injection molding processes. All these processes can be divided into two main groups:
In-mould assembly and In-mould coating.
1. In-mold assembly is joining several different or the same materials in one cycle, with a mechanical binding or a chemical bond. The difference between those two will be explained in the section materials. At In-mould assembly distinction can be made in different processes.