Just-in-Time – principles and application in production

Just-in-Time (JIT for short) describes a production and logistics concept in which materials and goods are delivered exactly when they are needed in the manufacturing process.

The aim is to reduce stock levels, optimise the flow of materials and achieve greater efficiency in production.

• Deliveries tailored to demand significantly reduce storage costs and enable capital to be utilised more efficiently.
• Optimised production processes and shorter lead times increase productivity and reduce downtime.
• Improved coordination between logistics and procurement boosts the overall efficiency of the production chain.
• The concept can be seamlessly integrated into modern packing and work systems and supports ergonomic work processes.

What does 'Just-in-Time' mean?

The Just-in-Time principle is a central component of modern production strategies. It means that materials and components arrive exactly when they are needed – neither too early nor too late.

This method is frequently used in industrial production to reduce stock levels and make optimal use of resources.

Distinction from other methods

Closely related is the first-in, first-out principle, which ensures a steady flow of materials. Both approaches aim to make production processes efficient and avoid unnecessary storage costs.

How does the Just-in-Time method work?

In the Just-in-Time process, delivery and production planning are closely linked.

Communication between suppliers and manufacturers takes place digitally and in real time. This allows deliveries to be coordinated precisely and bottlenecks to be avoided.

Example of JIT production

In a manufacturing process, for example, the delivery of packaging materials can be timed to coincide exactly with the moment when the material flow reaches a new order. This enables shorter waiting times at the packing tables and ensures continuous utilisation of the workstations.

Practical requirements

• A reliable supply chain and stable transport logistics form the basis for a functioning Just-in-Time production system.
• The digital interconnection of all manufacturing systems enables precise coordination between production and supply.
• Flexible production planning ensures that last-minute changes can be implemented without any loss of efficiency.
• Ergonomically designed packaging and workbenches help staff to work efficiently and safely.

Advantages and disadvantages of the Just-in-Time principle

Just-in-Time production offers a number of clear advantages, particularly in terms of flexibility and resource utilisation.

Advantages

• Lower stock levels reduce capital tied up in inventory and improve the company's liquidity.
• Companies can react more quickly to market changes and adjust their production volumes flexibly.
• An optimised production flow minimises waiting times and increases machine utilisation.
• Direct inspection of components during production improves quality assurance and reduces scrap.

Disadvantages

• A heavy reliance on suppliers can lead to production stoppages in the event of disruptions.
• Supply bottlenecks or transport delays increase the risk of production stoppages.
• Precise planning and continuous communication are essential to maintain a stable flow of materials.

Combining ergonomics and efficiency at the packing table

With Rocholz, you can design packaging workstations so that ergonomics, process reliability and efficiency come together effectively in day-to-day operations.

Ergoficiency® identifies strain, time wastage and organisational weaknesses based on objective data, creating a solid foundation for targeted improvements.

Using the packing table configurator, you can then plan a solution that is ergonomically well thought-out and precisely tailored to your processes and requirements.

FAQ

What is Just-in-Time?

Just-in-Time is a production and logistics concept in which goods are delivered exactly when they are needed – without prior storage.

What are the benefits of Just-in-Time?

It reduces storage costs, increases productivity and enables flexible production control throughout the supply chain.

How does Just-in-Time differ from Just-in-Sequence?

With Just-in-Sequence, delivery also takes place in the exact order of assembly. Just-in-Time, on the other hand, focuses primarily on the timing of delivery.