Fabric fusing is an important part of the garment production process. It involves attaching an interlining between parts of the garment fabric for increased strength and shape retention.

What is fabric fusing?

During fabric fusing, an adhesive resin is applied to one side of the interlining, and then bonded to another piece of fabric by applying heat and pressure. The resin solidifies as it cools, strengthening the bond between the two parts. The fusing process replaces the traditional method of sewing fabric parts and interlinings together for most fabric types.

Why are fabric fusing machines necessary?

Fabric fusing machines boost productivity for garment manufacturers. Without them, it would be impossible to fuse large amounts of fabric for mass production. Fusing machines fuse together fabrics for a range of industries, such as the clothing and automotive industries.

Fabric fusing machines apply the exact amount of heat and pressure required to melt adhesive resin, enhancing the bonding result. Too much pressure can cause product defects, and not enough pressure limits the amount of adhesive that is applied to the fabric. The amount of pressure required also depends on the size and width of the fabric. But these exact specifications are difficult to achieve manually, which could lead to injury or product defects. That’s why fabric fusing machines are a perfect alternative to manual fusing.

How do fabric fusing machines work?

Fabric fusing technology has advanced over time, but three things remain the same. Temperature, pressure, and processing time still need to be carefully monitored so that fabric is adequately fused together. These factors are interdependent, so if one changes, the others must also change.

The first step of fabric fusing is spreading the fabric onto a flat surface. The fusing machine should be set to the required preheating temperature, bearing in mind that overheating can cause garment shrinkage. Then, resin is applied to a fusible interlining and attached to the fabric. The interlining and fabric are fed into the fusing machine and heated to a specific temperature depending on manufacturer requirements. The machine also presses the fabric and interlining together at a preadjusted pressure. Once this is done,, the fabric is put aside for cooling, and the glue begins to solidify and strengthen.

What are the main types of fabric fusing?

  • Reverse fusing

With reverse fusing, the interlining is spread onto a flat surface with the resin facing upwards. The garment fabric is then spread on top of the interlining to complete the reverse fusing process. This method is most suitable for small fabric pieces, which cannot be properly spread due to their small size.

  • Sandwich Fusing

Sandwich fusing is most suitable for continuous fusing machines, which apply heat to both sides of the interlining. With sandwich fusing, two pieces of interlining are paired with two pieces of fabric, meaning that four layers are fused together. This increase in layers means that the heat and pressure should be adjusted and properly applied, and not doing so may result in poorly fused garments.

  • Double Fusing

Double fusing is where two interlining types are fused together with the garment fabric. This type of fusing is most suitable for jackets and shirt collars. To avoid product defects, it is important that the heat and pressure are adjusted to accommodate the double layers.

What causes fabric fusing defects?

Uncontrolled temperature and pressure are the number one cause of fusing failures. This is due to one or both of the following faults.

What is strike back and strike through?

If pressure and heat are not properly controlled, the resin originally applied to the interlining can pass through the lower part of the fabric. This is called “strike back”.

If pressure and heat are not properly controlled, the resin originally applied to the interlining can pass through the upper part of the fabric. This is called “strike through”.

What are the benefits of using a fabric fusing machine?

  • Accurate heat and pressure control

Poorly applied heat and pressure can lead to product defects including strike back and strike through. Fabric fusing machines can be preset to apply the perfect amount of heat and pressure for different fabric types, reducing the risk of poorly fused garments or fabric shrinkage.

Machines usually have an automatic temperature control and cool down once the fusing process is complete. Overheating is controlled by an automatic shutdown system, removing the risk of inaccurate fusing.

  • Preheating reduces fabric damage

Fabric fusing machines that include a preheat setting protect fabric from damage or shrinkage caused by inaccurate temperatures. Fusing machines notify users once they are heated to the correct temperature, so that interlining and fabrics are not applied too early.

  • Increased production capacity

Manual fusing is a slow process that is prone to human error. It is impossible to achieve high production rates with manual fusing. Fabric fusing machines can handle high fabric quantities at once, making them perfect for mass production. They are more efficient and reduce the manufacturing time, allowing factories to focus on large orders that bring high return on investment.

  • Decreased manpower, higher productivity

Automation using fabric fusing machines removes the need for manual fusing, which is inefficient and exhausting for factory staff. Staff can be reallocated to other factory areas, boosting productivity and reducing labor costs.

Fabric fusing machines are a large investment that enhance factory efficiency and save money. They are suitable for high quantities of fabric fusing that otherwise require significant manpower.

OSHIMA fusing machine

As a leading global provider, OSHIMA offers a wide range of mass-produced, large size fusing machines tailored to meet diverse customer needs.

Our OSHIMA conveyor fusing machines stand out for their advanced automation and user-friendly design. They feature automatic temperature control, cooling, overheating protection, and belt correction, ensuring efficient fusing. Plus, they're portable and easy to upgrade with additional accessories.

At OSHIMA, we understand the costs of machine breakdowns. That's why we offer swift, comprehensive after-sales service to minimize downtime and resolve issues promptly, no matter where you are in the world.


Fabric fusing is a vital part of the garment production process, and is made more efficient by fabric fusing machines. Heat, pressure and time are important variables that can have a huge impact on the finished product. Inaccurately applied heat or pressure can lead to strike through or strike back defects, in which the resin seeps through the upper or lower parts of the fabric. Fabric fusing machines reduce the risk of these defects, increasing efficiency for factories. If your factory is ready to reach a new level of fabric fusing, contact us today.