Pernoud To Demonstrate Bi-Material Multitube Overmoulding Technology At K 2025
Pernoud To Demonstrate Bi-Material Multitube Overmoulding Technology At K 2025
At K 2025, the largest trade fair in the world for the plastics and rubber industry, the French moldmaking expert, Pernoud, will highlight its new technological innovation, the Bi-material Multitube one-shot overmoulding process. This patented solution makes it possible to simultaneously mould two different materials in one operation, eliminating traditional downstream post-moulding processes and enhancing the efficiency of the production of tubular complex parts. The live demonstration at Hall 15, Stand B24 will be a key feature of the exhibition, where visitors will be able to see first-hand how advanced tool design and an integrated process can provide cost savings and quality improvements, with modern sustainability in mind.
The Bi-material Multitube process is designed to simplify and streamline the manufacturing of parts that traditionally require multi-step processes such as welding, adhesive bonding, or mechanical assembly. Instead of producing separate components and assembling them afterward, Pernoud’s one-shot system injects both materials—typically a rigid and a flexible thermoplastic—directly into the same mold. The result is a fully integrated, multi-functional part produced in a single cycle. This approach not only increases production speed but also guarantees a more reliable seal between materials, reducing the risk of leakage or failure, particularly in demanding applications.
Industry Applications: Lightweighting and Functional Integration
Pernoud’s technology is particularly suited for industries such as automotive, medical, industrial equipment, and home appliances where multilayer tubular parts are in high volume use. Automotive manufacturers, for example, routinely use complex fluid lines and air ducts that require structural rigidity coupled with functional flexibility. With the Bi-material Multitube process, designers can easily create complex molded parts with flexible soft sealing zones and hard durable connection zones in one mold. In medical applications, a catheter or tubing system can leverage dual-material construction to achieve both pliability and control. By creating these parts in one step, manufacturers create the opportunity to reduce total parts, decreased inventory and shorter assembly times.
What distinguishes this process is the efficiency of combining materials, but also the accuracy and repeatability of the final product. Since both materials are molded under controlled conditions simultaneously, the bond formation is much stronger than through secondary assembly processes, giving a functional integrity to the part and overall flexibility of design—engineers can conceptualize parts with complex geometries or multiple functional zones with little concern for mechanical failures or alignment of components. Moreover, because of Pernoud’s patented design of the mold, the interface between materials is completely sealed and can withstand any pressure, temperature variations, and mechanical stress while retaining strength and performance.
In addition to performance, the economics and eco-friendliness of this process are quite convincing. Avoiding post moulding methods of assembly such as gluing, ultrasonic welding, or manual assembly, reduces the labour force required, decreases the manufacture cycle of the final device, and conserves energy. There are also fewer parts, leading to a lower quantity of mould tooling, less transportation between stations, and less waste (material plus scrap). As global trends increasingly embrace sustainability and lean manufacturing ethos, the one-shot overmoulding solution from Pernoud provides a concrete means in advancing a company’s and industry’s sustainability goals, without compromising product performance or design flexibility.
Pernoud brings decades of expertise to this innovation. With more than 50 years in high-precision moldmaking, the company is known for its advanced tooling systems that support complex injection molding applications. Their molds frequently incorporate rotary indexing platens, in-mold transfer systems, and robot-assisted part handling, providing end users with reliable, high-performance solutions capable of operating 24/7 in high-volume production environments. The Bi-material Multitube technology represents the latest evolution of this engineering excellence—one that addresses both current manufacturing needs and future market challenges.
Live Demo at K 2025: Innovation in Action
At K 2025 visitors will see this technology live int action, molding a complex tubular part from two materials in a single cycle. The machine will have experts from Pernoud on hand to discuss the process, technical details like material compatibility and cycle times, as well as the unique tooling options available for these applications. This demonstration will be valuable whether you’re with a Tier 1 automotive supplier, a medical device manufacturer, or an OEM that is looking for production efficiencies, it will show you how one shot overmoulding can help you re-think your manufacturing approach.
As manufacturers face increasing pressure to cut costs, reduce environmental impact, and deliver innovative designs, the Bi-material Multitube process from Pernoud offers a powerful solution. By combining functionality, precision, and efficiency in a single molding step, it marks a significant advancement in multi-material molding technology.
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