Formed-Parts System

A formed-parts system provides the technical foundation for keeping contents in professional cases and transport containers secure, organized, and ready for use. In the manufactory of KKC Koffer GmbH in Stemwede-Levern, formed parts and inlays are engineered to precisely secure, present, or support devices, measuring equipment, samples, or assemblies. The spectrum ranges from thermoformed trays to CNC-milled foam inlays through to assembly-ready modules for cases, aluminium cases, plastic cases, transport containers and the X-PCK backpack case, as well as functionally integrated solutions such as the Mobile Work Table in a Case.

Definition: What is meant by a formed-parts system?

A formed-parts system refers to the coordinated interaction of form-bound components in the interior and exterior construction of a case or transport container. These include precisely fitting inlays (e.g., foam inserts, deep-drawn parts, EPP/EVA elements), carrier plates, brackets, profiles, fittings, and functional modules. The objective is repeatable accommodation of defined contents, protection against mechanical and climatic influences, a clear structure for assembly, service, or presentation, and ergonomic handling in daily use.

Architecture and components of a formed-parts system

A formed-parts system consists of several layers, each covering protection, organization, and function. In practice, a distinction is made between load-bearing structures, form-defining inserts, and functional additions:

• Load-bearing structures: Case shells made of aluminium or plastic, frame profiles, corners, hinges, latches, handle systems.
• Form-defining inserts: CNC-milled foam inlays (PE/PU/EVA), EPP formed parts, thermoformed trays (ABS/PS/PP/PC), modular inlays, cover layers.
• Functional additions: Mounting plates, device holders, cable and accessory management, document pockets, ESD elements, markings and branding areas.

Materials and manufacturing processes

The choice of material and process determines protection performance, service life, and precision. Suitable combinations are used for applications from demo cases to industrial cases.

Foams and fiber-based materials

PE and EVA foams are dimensionally stable, water-repellent, and provide definable damping. PU foam is suitable for gentle contact surfaces and sensitive finishes. Fiberboards and honeycomb-core carriers can serve as lightweight, stiff mounting levels. Processing is usually performed by CNC milling, waterjet cutting, or laser cutting.

Thermoplastic formed parts

Thermoformed inlays made of ABS, PS, PP, or PC create contour-true recesses for components and sets. They are quickly reproducible, easy to clean, and enable series consistency. For higher impact resistance or temperature stability, material blends and textured surfaces are used.

Aluminium and hybrid constructions

Aluminium profiles, corners, and lid frames form the robust outer structure of aluminium cases. Hybrid solutions combine plastic shells with metallic reinforcements when low weight and stability are required simultaneously.

Joining techniques and surfaces

Screwing, riveting, bonding, and ultrasonic welding provide durable fastening of components. Surface treatments improve corrosion protection, cleanability, or friction. Branding is implemented via printing, relief embossing, or inserts without impairing function.

Design principles: protection, ergonomics, repeatability

A robust formed-parts system follows clear design rules. Protection, operability, and manufacturing reliability are equally prioritized.

• Fit accuracy and tolerances: Interior contours follow component geometries with defined clearances. Grip recesses and lift-outs enable ergonomic handling.
• Shock and vibration protection: Damping layers, rib geometries, and support points are arranged to divert loads. Critical edges are decoupled.
• Climatic suitability: Materials are selected with regard to humidity, temperature, and cleaning. Ventilation, sealing, or drainage can be integrated.
• ESD and hygiene aspects: Dissipative materials and closed surfaces support applications in electrical and medical technology. Requirements may vary by use case and are generally project-specific.
• Modularity: Interchangeable inserts and levels allow variant creation or later adaptations without redeveloping the entire system.

Formed-parts system in use: demo cases, equipment cases, sample and presentation cases

The configuration is guided by the purpose: protect, showcase, operate—or all at once. The formed-parts system defines structure and workflow at the point of use.

• Demo cases and presentation cases: Contour-true inlays arrange exhibits, colored top layers guide the eye. Thermoformed parts create levels for accessories and media. Branding is subtly integrated.
• Sample cases: Exchangeable trays for changing assortments, clearly labeled recesses, robust carriers for series repeatability.
• Equipment cases and Professional machine cases: Shock-decoupled seating, service compartments, tool holders. Hinged mounting plates enable maintenance access.
• Transport cases and industrial cases: Load-path-appropriate support, additional fixing points, logistics labeling, optionally stackable and conveyor-compatible.

Product-specific implementation in cases and transport containers

Cases and aluminium cases

With metallic frame constructions, dimensionally stable shells are combined with precise inlays. Aluminium profiles facilitate the integration of bolted mounting plates that serve as the base for assemblies or measuring devices. The formed-parts system ensures coupling between the outer structure and the interior geometry.

Plastic cases

Plastic shells allow low weight and good impact toughness. Thermoformed inlays and EPP formed parts create durable recesses. Modular inserts enable variants with different equipment to emerge from a common base system.

Transport containers

For high loads and harsh environments, stiff carriers, reinforced edges, and replaceable load introduction points are used. Formed parts are designed for repeated handling and easy cleaning.

X-PCK backpack case

In hybrid backpack-case concepts, a lightweight formed-parts system ensures a secure seat for devices while maintaining ergonomic carry. Flat trays and flexible foam layers combine protection with quick access.

Foam inlays

CNC-milled inlays made of PE, PU, or EVA form the core of many interiors. They are built up in multiple layers, color-coded, and equipped with functional cutouts for grip points, cable routes, or documents.

Mobile Work Table in a Case

Here, the formed-parts system combines support structure, folding mechanism, and work surface. Mounting plates, guiding elements, and cable management are executed as a unit. For testing companies, IT service providers, service and mobile tradespeople, measurement technology manufacturers, HVAC, moderators, consultants, trade fair outfitters, electrical plant engineering, electrical installation, and mechanical engineering, interfaces and mounts are adapted to specific devices and workflows.

Branding

Labels, inserts, and marking fields are part of the system. They support organization, recognition, and operating instructions without impairing functional surfaces.

Requirements in medical technology, electrical engineering, and measurement technology

Special criteria apply in sensitive areas. The formed-parts system is prepared for these without changing the core function.

• Cases for medical technology: Smooth, cleanable surfaces, chemical resistance, gentle contact for delicate components, unambiguous placement.
• Cases for electrical engineering: ESD-compliant materials and potential equalization, structured cable routes, labeled slots, mechanical strain relief for connectors.
• Cases for measuring instruments: Form-stable seating, protection against calibration deviations through decoupled supports, space for accessories and documentation.

Development process: from requirement to series solution

A reproducible formed-parts system emerges from a clear, documented process that explicitly allows for adaptations.

1. Requirements capture: Contents, environmental conditions, handling, normative references, and target quantities are defined.
2. Concept and CAD: Digital models of contents and case geometry, definition of levels, damping, grip and service points.
3. Prototyping: Functional samples to verify fit, ergonomics, and protective effect.
4. Testing: Load, transport, and handling tests under realistic conditions; results feed into optimization.
5. Series production: Tooling, CNC programs, and quality characteristics are defined; batch sizes and variants are derived.
6. Change and service concept: Interchangeable inserts, spare-part availability, and documentation are provided.

Guidelines for a robust and legible interior structure

Good interiors present contents intuitively and provide reliable protection. The following points have proven effective:

• Logical levels: Main device on the primary level, accessories in designated zones, documents separated.
• Contrast and haptics: Colored underlays for visibility, surfaces with sufficient grip, rounded edges for durability.
• Service access: Folding plates, plug-in modules, and defined tool areas accelerate maintenance and demonstrations.
• Scalability: Grids and modular cutouts allow later additions without rebuilding the overall system.

Sustainability, repairability, and life cycle

A long-lasting formed-parts system reduces effort and resource consumption. Interchangeable inlays, bolted mounting points, and standardized materials simplify repair and adaptation. Clean separation of materials supports recycling without accepting any loss of function.

Typical sources of error and how to avoid them

• Tolerances too tight: Minimal clearances may look high-quality but must not ignore thermal expansion and manufacturing tolerances.
• Unclear support surfaces: Point loads cause damage; planar, defined supports are preferable.
• Unconsidered cable routes: Missing strain relief promotes cable breakage; integrated channels and clamps prevent this.
• Complexity without benefit: Every function should deliver measurable added value. Modular simplicity facilitates use and maintenance.

Relation to products and application areas of KKC Koffer GmbH

Whether cases, aluminium cases, plastic cases, transport containers, foam inlays, X-PCK backpack case or the Mobile Work Table in a Case: The formed-parts system establishes the connection between contents, user, and environment. In areas such as demo cases, equipment cases, sample cases, presentation cases, transport cases, industrial cases, special-purpose cases, cases for medical technology, cases for electrical engineering, cases for measuring instruments, professional cases for tradespeople and professional machine cases, the quality of the formed-parts system determines protection, organization, and efficiency in everyday use.