Plastisart specialises in the design and manufacture of plastic parts and assemblies for the indu...
Assembly and mounting of industrial plastic sub-assemblies Our plastic assembly techniques
In many industrial projects, the difficulty does not lie in manufacturing a part, but in integrating several components into a functional sub-assembly, ready to be mounted on a production line or delivered directly as a finished product. Coordinating several suppliers for each component, then entrusting the assembly to a third-party operator, multiplies interfaces, compatibility risks and delays.
At Plastisart, the assembly and mounting of plastic sub-assemblies is an integral part of our transformation offering. We take charge not only of manufacturing individual parts through our various processes, thermoforming, machining, RIM injection, blow moulding, bending, but also their assembly into complete, inspected and deliverable sub-assemblies according to your needs.
Do you want to work with a partner who integrates quality control of parts at the center of their production ?
Design and prototyping
- Comprehensive support, from design to industrialization
- Detailed identification of your technical needs
- Advice on the choice of the most suitable technologies
Our plastic assembly techniques
Plastic bonding
Bonding is our preferred assembly technique for thermoplastics. We master the application of structural adhesives adapted to different material types: PMMA, ABS, PVC, PC, HDPE and their combinations. Surface preparation, adhesive selection and polymerisation conditions are defined according to the requirements of the sub-assembly.
Plastic welding
For assemblies requiring a permanent high-strength bond or a seal, we carry out welding by different methods adapted to the materials and geometries: hot air welding, heated element welding, extrusion welding. These techniques are particularly suited to polyolefin materials such as HDPE and PP.
Mechanical assembly
Screwing, riveting, clipping, insert crimping: we carry out the mechanical assembly operations necessary for the integration of components with each other and with elements provided by the client. Our assembly jigs guarantee dimensional repeatability and compliance with assembly interfaces.
Integration of external elements
According to the specifications, we can integrate into our sub-assemblies components provided by the client or sourced according to your specifications: metal inserts, seals, fasteners, foams, protective films, simple electrical or electronic elements.
Plastisart supports you throughout your project
We do not only carry out assembly, we are able to support you throughout the entire process. This avoids back-and-forth between different providers and saves you time and money.
Integrated design office on our premises
A well-designed plastic sub-assembly is one whose assembly interfaces have been thought through from the design phase of the individual parts. At Plastisart, our design office integrates assembly constraints from the CAD modelling of components: clearances and fits, bonding zones, insert positions, fastener accessibility, assembly sequence.
This Design for Assembly approach avoids unpleasant surprises at assembly time and reduces reworking operations. It is particularly valuable for complex sub-assemblies or projects with tight dimensional constraints.
Quality control of sub-assemblies
Every sub-assembly assembled at Plastisart is subject to inspection before delivery. Depending on the nature of the sub-assembly and the requirements of the specifications, this inspection can include dimensional verification of critical interfaces, visual inspection of assembly zones, functional testing of fits and movements, and the provision of compliance documentation.
The traceability of components and assembly operations is maintained for each batch, in accordance with our usual quality practices.
Learn more about our quality control services
Logistics and packaging
Sub-assemblies delivered by Plastisart are packaged according to your requirements: individual or batch packaging, protective packaging adapted to geometries and surfaces, labelling according to your standards. We can adapt our delivery frequency to your production needs, in just-in-time flow or with buffer stock managed directly in our warehouses.
Learn more about our logistics and storage services
Why choose Plastisart as your partner?
Reducing your supplier interfaces without impacting your level of requirement
Outsourcing the assembly of plastic sub-assemblies to Plastisart means reducing the number of contacts in your supply chain without reducing technical control over your components. We manufacture the parts, we assemble them, we inspect them and we deliver them ready for use.
Our different sectors of activity
FAQ
What is plastic sub-assembly?
A plastic sub-assembly is a set of components — plastic or mixed — assembled according to a defined assembly plan to form a functional unit. It can be a complete machine cladding incorporating several thermoformed parts, covers assembled on load-bearing structures, multi-component housings combining machined and injected parts, or sub-assemblies integrating metal inserts, seals, fasteners or components provided by the client. The complexity of an assembly can vary considerably: from the assembly of two parts by structural bonding to the constitution of a multi-material sub-assembly incorporating mechanical interfaces, fastening elements and sealing functions.
Do we carry out assemblies with external components?
Yes, and this is actually the very principle of our integration service. You can entrust us with your own components — specific fasteners, electronic boards, hinges, screens, protective foams — so that our operators assemble them directly with the plastic parts we manufacture for you.
How to choose between plastic bonding and welding?
Our design office validates the method according to the materials and final use. Bonding is ideal for assembling different thermoplastics (ABS, PC, PMMA) and achieving an invisible aesthetic finish. Welding (hot air or extrusion) is preferred for polyolefins (HDPE, PP) to guarantee an unbreakable, ultra-resistant and perfectly sealed bond.
What is the Design for Assembly approach of our design office?
It is the practice of thinking about assembly from the drawing of the individual part. During CAD modelling, we directly integrate future operating clearances, fastener accessibility, adhesive deposit zones and insert locations. Designing this way avoids costly manual adjustments and unpleasant surprises during series production.
What is the logistical advantage of entrusting assembly to Plastisart?
You reduce your supplier interfaces. Instead of ordering parts from different subcontractors, calling on providers for assembly and managing transport and storage, Plastisart takes care of everything. You place a single order, with a single point of contact, and receive a finished, inspected and ready-to-use product.
