Tangerang, Indonesia — September 2026 — PT Rho Sigma Trijaya (RST) recently welcomed a food industry client to its workshop for a Ribbon Mixer trial designed for tempeh production.

The trial was conducted to evaluate how mechanical mixing could improve a production process that had previously relied heavily on manual handling.

From Manual Mixing to a More Efficient Process

Since starting their business, the customer had been carrying out the mixing process manually. As production volumes increased, the process required several operators to handle larger batches while maintaining consistent mixing results.

This created an opportunity to improve the process through appropriate mixing equipment.

The customer came to RST looking for a solution that could help:

• Reduce manual handling

• Improve mixing consistency

• Process larger batches more efficiently

• Reduce dependence on manual labor

• Prepare the product more consistently for the next production stage

Rather than simply selecting a machine based on capacity, RST conducted a practical Ribbon Mixer trial using the customer's product.

Ribbon Mixer Trial for Tempeh Production

During the trial, the Ribbon Mixer was tested with a batch of approximately 30 kg.

Based on the trial observation, the product reached the required mixing condition in approximately 1 minute, after which it was ready to proceed to the next process.

The actual mixing time can vary depending on product characteristics, formulation, moisture content, batch size, loading condition, and the required degree of mixing. Therefore, conducting a product trial is an important step when determining the appropriate mixer configuration.

Why Trial Testing Matters

Every product behaves differently during mixing.

Factors such as:

• Product density

• Moisture content

• Particle size

• Material consistency

• Batch size

• Mixing objective

• Required uniformity

can influence the required mixing time and mixer performance.

For this reason, a practical machine trial can provide useful information before a customer invests in production equipment.

At RST, the trial process allows customers to evaluate the equipment using their actual product and process requirements.

Supporting the Growth of Food Production

For growing food businesses, increasing production capacity does not always mean simply adding more operators.

Improving the process itself can be another way to increase productivity.

A properly selected industrial mixer can help businesses move from highly manual processing toward a more consistent, repeatable, and scalable production process.

For traditional food products such as tempeh, the objective is not necessarily to change the product or its traditional character. Instead, the goal is to improve the production process while maintaining the required product characteristics.

Ribbon Mixer Applications in Food Processing

Ribbon Mixers are commonly used for mixing dry, semi-dry, powder, granular, and certain moist food materials.

Depending on the product and process, Ribbon Mixers can be designed with different configurations for:

• Batch capacity

• Material of construction

• Product-contact material

• Mixing speed

• Motor and gearbox

• Ribbon configuration

• Discharge system

• Hygienic requirements

For food applications, stainless steel construction and an appropriate hygienic design can be considered according to the customer's process requirements.

From Trial to Production Equipment

The tempeh mixing trial demonstrates the importance of understanding the customer's actual production process before determining the final equipment specification.

The appropriate mixer should be selected based on the product, batch size, mixing objective, required cycle time, and production capacity.

At RST, the engineering process can include product discussion, machine selection, trial testing, equipment design, fabrication, and testing before delivery.

Looking for a Mixer for Your Food Production Process?

If your business currently relies on manual mixing and you are considering increasing production capacity, a Ribbon Mixer trial can help determine whether mechanical mixing is suitable for your process.

PT Rho Sigma Trijaya provides custom industrial mixing equipment for food, chemical, paint, adhesive, building material, and other manufacturing applications.

Contact the RST team to discuss your product, batch size, mixing requirements, and production target.