At Yorkshire Packaging Systems we have a range of shrink tunnels to accommodate any speed, any product and any material for a vast array of packaging applications. Harsh environments such as dairies also be accommodated for. Whatever your requirements, we can supply the ideal model of shrink tunnel to meet them.
- Accurate temperature control ensuring absolutely consistent end pack presentation.
- Variable speed control providing complete control of production speeds.
- Active rotation conveyor ensuring perfect under pack shrinking.
- Adjustable air flow system helping to achieve the best possible presentation.
- Double insulated curtains improving consistency and reducing running costs.
- Solid state relay temperature controllers for improved reliability and accuracy.
High quality, consistent results….
Shrink tunnels usually complete a shrink wrapping line and are placed after the sealing unit. Their purpose is to tightly shrink the film that has been formed around the products in either bags, sleeve or tube formats (depending on the type of wrapper being used) to the product as it travels through the machine. This is achieved through the heat omitted by the tunnel reacting with the film to make it shrink down. Due to the use of heat, these machines are sometimes referred to as shrink ‘ovens’. Shrink tunnels can also be supplied individually for a bagging operation.
When using display polyolefin shrink films, the most suitable shrink tunnel conveyor is a roller conveyor system. This allows maximum airflow to the underside of the packs which provides high quality, consistent results. With this system, the rollers also rotate in order to transfer the product along the conveyor. This means that the pack actually travels faster than the conveyor itself, ensuring that no single part of the underside of the pack is ever in constant contact with the belt, and therefore no markings are left on the underside. This is important for many display shrink wrapping applications where aesthetic appearances are key and provides a clear advantage over cheaper, mesh belt systems.
When polythene shrink film is being used, we can also supply polythene specification shrink tunnels. These models utilise a heavy-duty steel mesh belt which provides pack stability, coupled with under belt and after pack coolers. Our upgraded steel-mesh belts are preferable to tunnel belts that are driven by friction because they will never stretch or need replacing – even after years of production.
The speed of the shrink tunnel conveyor is variable on all of our models and can be accurately controlled. This enables you to set the speed to meet the specific production rate required, resulting in optimum pack presentation.