Introduction
Folding letters and brochures by hand is a time-intensive task. A folding and inserting machine streamlines this process efficiently, increasing productivity and reducing manual effort.
In this article, we will guide you through the process of folding your letters and brochures effortlessly, making the task quick and hassle-free. Let’s explore how a folder inserter can streamline your workflow.
Overview of folding machines
A folding machine is a device for folding paper, cardboard, and other materials into various shapes and sizes. It is commonly used in offices, print shops, and mailing centres.

Folder inserters not only fold but also stuff folded paper into an envelope to be sent, saving valuable time. Folder inserter machines come in different sizes, shapes, and capabilities, ranging from small tabletop models to large industrial machines.
Benefits of using a folding machine
A folding machine is a strategic investment to accelerate and elevate your document-handling capabilities.

Time and labour savings: Automating the folding process with a precision-engineered folder inserter enhances efficiency and saves time. This automation also allows for better allocation of human resources.
Precision: Ensure impeccable presentation with each fold. Automated folding machines guarantee accuracy and consistency, eliminating the potential irregularities associated with manual folding.
Consistency: Improve the overall professionalism of your documents. Folder inserters consistently deliver flawless folds, presenting a refined image to clients and customers.
Efficiency: Eliminate the hassle of manual folding and stuffing envelopes. Folder inserter machines reduce workload and enhance productivity, allowing you to focus on core business activities.
Professionalism: Project a polished and professional image with neatly folded documents, reinforcing your commitment to quality.
Understanding the different fold types
Various types of folds can be achieved using a folder inserter machine. Some of the most common folds include:
Letter fold: This fold involves folding a paper into thirds, creating a letter-like shape.
Gate fold: This fold involves folding a sheet of paper in half and then folding the two outer edges inwards to create a gate-like shape.
Z-fold: This fold involves folding a sheet of paper back and forth, creating a series of parallel folds.
Single fold: This fold involves folding a sheet of paper in half, creating two equal panels.
Double parallel cross fold: This fold involves folding a sheet of paper in half twice, creating four equal panels.
Parallel fold: This simple fold involves folding a sheet of paper in half and then folding it in half again.
Tri-fold brochure: This fold involves folding a sheet of paper into three equal parts, creating a brochure with three panels.
Preparing your materials for folding
When handling paper, several key factors should be considered:
- Weight: Paper weight measures thickness. Thinner paper has a lower weight, while thicker paper has a higher weight. Standard office stationery, commonly used in printers and photocopiers, is typically 80 grams per square metre (gsm). However, the paper weight for sheets to be machine-folded should fall between 60gsm and 120gsm. Higher paper weights may limit the number of sheets that can be folded together.
- Types of paper: Multi-purpose papers are suitable for general use. Laser papers are heavier and withstand higher heat levels without curling. Inkjet papers are treated to enhance colour quality. Selecting the right type of paper is essential for optimal results.
- Size: In the UK, the standard paper size is A4 (210 x 297 mm). Choosing the appropriate paper size ensures compatibility with the machine.
- Storage: Paper should be stored on shelves or in cupboards. The temperature and humidity of the storage area can significantly affect paper performance in a machine. To prevent moisture-related issues, store paper in an area where the temperature is between 20° and 24°C and the relative humidity range is 35% to 55%.
- Orientation: Paper is loaded into a folder inserter in two orientations: long-edge feeding (LEF) and short-edge feeding (SEF). Orientation determines both the folding method and the number of sheets processed at once. Refer to the machine’s manual for the recommended orientation for specific fold types.
Setting up your folding machine
Once you have prepared your materials, it’s time to set up your paper folder inserter machine. This involves adjusting the machine's settings to ensure it produces the desired fold. Key adjustments include:
- Fold type – Select the appropriate folding style (i.e., letter fold, Z-fold, gate fold).
- Paper size – Ensure the machine is set to accommodate A4 or other required dimensions.
- Paper thickness settings – Adjust based on the paper weight (gsm) to prevent jamming or misalignment.
Conclusion
Folding letters and brochures with a folder inserter is an efficient and cost-effective way to increase productivity in any office or mailing centre. By understanding the different types of folds and adequately preparing your materials, you can achieve professional-looking results with minimal effort. Investing in a high-quality folder inserter machine ensures efficiency, professionalism, and cost savings. Explore available models to find the best fit for your needs.