2-Shot Mouldings - complex parts in one manufacturing process
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2-Shot Mouldings

Our innovative 2-Shot manufacturing process produces complex moulded parts in multiple materials and can be used for a variety of product designs across a wide range of industries.

Interactive tools
O-Ring Calculator Chemical Compatibility Engineering Calculators
2-shot mouldings
Products
Replaces high volume component assemblies in one process; reduction in parts required and installation is streamlined.
Materials
Products manufactured from multiple materials with powerful molecular bond.
Manufacturing
Co-polymerisation of hard (or soft) plastics and thermoplastic elastomers (TPE’s) produces complex, multiple material parts.
Engineering & Design
Complete seal design service from experienced application engineers using the latest technology in 3D design and FEA simulation software.

About 2-Shot Mouldings

We utilise the 2-shot moulding manufacturing method to produce engineered parts that perform a critical sealing function. The co-polymerisation of hard (or soft) plastics and thermoplastic elastomers (TPE’s) and allows us to design and manufacture complex, multiple material parts for our customers. Our 2-shot moulded products replace high volume metal or plastic- to- rubber component assemblies that are processed via chemical or mechanical bonding by using adhesives or over-moulding.

Materials

We use the following thermoplastic and plastic materials for our 2-shot moulding production process: Styrene Block Copolymers (TPE-S), Thermoplastic Polyurethane Block Copolymers (TPE-U) Copolyesters (TPE-E), Copolyamides (TPE-A), Olefinic Thermoplastic rubbers (TPE-O), Polyamide (PA/Nylon), Polybutylene Terephtalate (PBT), Polypropylene (PP).

The end result is a high integrity seal product with a powerful molecular bond, reduced production cycle times (as many additional processes are removed from the production line) and comprehensive cost reductions as all parts are produced in a single manufacturing tool.

Overview

About 2-Shot Mouldings

We utilise the 2-shot moulding manufacturing method to produce engineered parts that perform a critical sealing function. The co-polymerisation of hard (or soft) plastics and thermoplastic elastomers (TPE’s) and allows us to design and manufacture complex, multiple material parts for our customers. Our 2-shot moulded products replace high volume metal or plastic- to- rubber component assemblies that are processed via chemical or mechanical bonding by using adhesives or over-moulding.

Materials

We use the following thermoplastic and plastic materials for our 2-shot moulding production process: Styrene Block Copolymers (TPE-S), Thermoplastic Polyurethane Block Copolymers (TPE-U) Copolyesters (TPE-E), Copolyamides (TPE-A), Olefinic Thermoplastic rubbers (TPE-O), Polyamide (PA/Nylon), Polybutylene Terephtalate (PBT), Polypropylene (PP).

The end result is a high integrity seal product with a powerful molecular bond, reduced production cycle times (as many additional processes are removed from the production line) and comprehensive cost reductions as all parts are produced in a single manufacturing tool.

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Related Articles

Using Finite Element Analysis (FEA) in seal design

Finite Element Analysis (FEA) is a computerised modelling method for predicting how an object reacts to forces. This could be whether directly applied or generated by pressure, temperature effects or vibration.

Finite Element Analysis (FEA) is a computerised modelling method after a 2D or 3D model of an initial design has been produced.

Our specialist software uses mathematical models to understand and quantify the effects of real-world conditions on a part or assembly. Conditions and constraints such as pressure, force and temperatures are applied. FEA provides data to help predict how a product will function under those applied conditions. It also identifies areas where the design can be optimised and improved, without having to test multiple prototypes.

Our dedicated engineering page gives more information on our engineering, design and innovation service, including FEA and prototyping.

Read Article arrow

Why use 2-Shot moulded seals?

2-Shot moulding is a manufacturing process that allows the co-polymerisation of hard (or soft) plastics and thermoplastic elastomers (TPE’s). We use the 2-Shot manufacturing approach to deliver engineered parts that perform a critical sealing function.

Read Article arrow

2-shot mouldings replace high volume seal component assemblies in one manufacturing process.

Our 2-shot moulding process is used to produce engineered products that perform a critical sealing function. Previously manufacturers of high volume, multiple material assemblies have produced them via chemical or mechanical bonding, adhesives or over-moulding.

These methods achieve the finished assembly required, however the processes are lengthy. They also can encounter problem areas that require stringent controls.
A failure in any of these areas can result in poor quality parts, therefore making these methods unsuitable for critically engineered components.

2-Shot moulding technology overcomes any potential problems and produce engineered and reliable parts for sealing applications.

Thermoplastic elastomers (TPE’s) are materials with elastomeric and thermoplastic properties but are suitable for melting at high temperatures. This means that they can be co-polymerised to the secondary plastic material.

Example are; Styrene Block Copolymers (TPE-S), Thermoplastic Polyurethane Block Copolymers (TPE-U), Copolyesters (TPE-E), Copolyamides (TPE-A), Olefinic Thermoplastic rubbers (TPE-O), Vulcanised Phase blends (TPE-V) and PVC/NBR blends.

The plastic materials commonly used in the 2-Shot moulding process are Polyamide (PA/Nylon), Polybutylene Terephtalate (PBT) and Polypropylene (PP)

View our brochure.