BENEFITS OF HEAT-SEAL TECHNOLOGY
An example based on a 16mm wide strap (widely used in the building products industry, for example clay bricks and concrete block paving where void pack security is paramount). Some older Friction Weld strapping heads have a circular seal area. In the example shown below, a typical friction weld area of 12mm diameter would equate to a total welded surface area of 113mm². Heat sealing heads apply heat and pressure across the entire width of the strap to create a seal 25mm in length. This equates to a total welded surface area of 400mm² (a 71% increase in hold down force). Nearly all PET has recycled content in unknown quantities. This can influence the seal quality. By increasing the surface weld area, heat sealing ensures maximum seal efficiency.