RIM moulding provides an efficient solution for producing low and medium volumes of polyurethane components when functional, end-use parts are already required.

Compared with conventional injection moulding, RIM enables series-like production with lower tooling costs and shorter production preparation times.

By selecting the appropriate polyurethane system, hardness, flexibility, impact resistance and surface appearance can all be tailored to the application.

02WHY RIM?

Flexible manufacturingfrom low volumes to several thousand parts.

RIM becomes particularly valuable once a product has moved beyond the prototype stage but the investment required for conventional injection moulding is not yet justified.

Cost-effective low and medium volumes

Production can begin with significantly lower tooling investment than conventional injection moulding while still producing functional end-use parts.

Larger and complex components

The process is well suited to larger polyurethane components with variable wall thicknesses and complex geometries.

Tailored material properties

The hardness, stiffness, flexibility and other characteristics of the polyurethane system can be adapted to the application.

Faster production preparation

Compared with conventional injection moulding, the route from prototype to functional low or medium-volume production can be significantly shorter.

03DECISION SUPPORT

Planning a low or medium-volume production run?Let's see whether RIM is the right choice.

Send us your 3D model, required quantity and key technical requirements. We will assess whether RIM, vacuum casting or injection moulding offers the best solution.

Help me choose

04HOW DOES IT WORK?

From product designto the finished polyurethane component.

01Design

The product geometry and manufacturing requirements are adapted to the RIM process.

02Tooling

The tool is designed according to material flow, release, wall thickness and required production volume.

03Material system

The appropriate polyurethane system is selected according to the required mechanical and surface properties.

04RIM moulding

After mixing, the reactive components are introduced into the mould where they cure through a chemical reaction.

05Finished component

After post-processing and inspection, the component is ready for end use or further validation.

05TYPICAL APPLICATIONS

Functional components.For real industrial applications.

RIM is particularly suitable when a project has moved beyond a single prototype and requires functional low or medium-volume production.

01Pre-series products

02Low and medium-volume end-use parts

03Machine and equipment housings

04Technical enclosures and covers

05Large polyurethane components

06Functional industrial components

07Control panels and interfaces

08Changing or developing designs

09Parts requiring good surface quality

06POLYURETHANE MATERIAL SYSTEMS

More than geometry.The material is tailored to the application.

Selecting the right polyurethane system is one of the most important decisions in RIM moulding. The required properties should already be defined during the engineering stage.

Hardness

The required softness or stiffness can be tailored to the application using the appropriate polyurethane system.

Flexibility

Different formulations can provide flexible or more rigid mechanical characteristics.

Impact resistance

The material system can be selected according to the expected mechanical loads.

Temperature

The intended environment and operating temperature are important factors in material selection.

Wear resistance

For moving, contacting or loaded components, durability is considered during material selection.

Surface

The required appearance and surface characteristics also influence the selection of the material system.

07WHEN SHOULD YOU CHOOSE RIM?

The right technologyfor the right production volume.

RIM can be an excellent choice when you need more than one or two prototypes but conventional injection moulding is not yet economically justified.

Quantity is only one factor. Geometry, component size, surface requirements and material properties all play an important role in the decision.

Quantity

The technology can be particularly attractive for volumes ranging from several dozen to several thousand parts.

Size

For larger components, RIM can often provide a more economical and flexible solution than alternative processes.

Function

For functional end-use parts, material properties become a key consideration.

Surface

Good surface quality and consistent appearance can be achieved with the right tooling and material system.

Development stage

RIM can be particularly useful when the design may still evolve but series-like production is already required.

Investment

A conventional injection moulding tool may not yet be justified or economically viable.

08NEXT STEP

Already have a model and target quantity?Let's evaluate the feasibility of RIM together.

We can review the component design, tooling concept, polyurethane material system and planned production volume together.

Request a quote

09FROM PROTOTYPE TO SERIES PRODUCTION

Not an isolated technology.Part of a complete development process.

Early versions of a new product can be validated quickly using 3D printing, followed by pre-series or low-volume production using RIM moulding.

This allows the product to be tested using near-final materials and appearance without the significant investment required for full series production.

If production volumes later increase, the development path can naturally continue toward the appropriate series-production technology.

Request a quote

Have anidea?

Show us what you want to create.

Tell us briefly about your project, expected quantities and, if available, attach your drawing or 3D model.

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OFFICE / FINANCEpenzugy@runplast.hu

PHONE+36 20 553 51 57

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