2-Shot molding / Bi-Injection

2 Shot molding(2 component molding / 2K molding / 2K injection / Overmolding) is an innovative manufacturing process used to produce complicated moulded parts in multiple materials, and can be used for a variety of product designs across all industries.

2 Shot molding(2 component molding / 2K molding / 2K injection / Overmolding) optimises the co-polymerisation of hard and soft materials to create a powerful molecular bond.

Ming-Li uses thermoplastic elastomers and plastics for the 2 Shot moulding(2 component molding / 2K molding / 2K injection / Overmolding) process as traditional thermoset compounds (such as nitriles, fluorocarbons, EPDM’s) are not suitable.

Ming-Li typically uses the following thermoplastic materials for 2 component molding(2K molding / 2K injection / Overmolding) :
 

• Styrene Block Copolymers (TPE-S)
• Thermoplastic Polyurethane Block Copolymers (TPE-U)
• Copolyesters (TPE-E)
• Copolyamides (TPE-A)
• Olefinic Thermoplastic rubbers (TPE-O)

Ming-Li typically uses the following plastic materials for 2 Shot moulding(2K molding / 2K injection / Overmolding) :
 

• Polyamide (PA/Nylon)
• Polybutylene Terephtalate (PBT)
• Polycarbonates (PC)
• Polypropylene (PP)

The 2 Shot moulding process allows us to design and manufacture complex, multiple material parts for our customers to perform a sealing function.

Additionally, the multi-shot moulding process can also be used as a cost effective method to bond materials in different colours for cosmetic purposes.