Fabrics, single and multilayer, can be heat-slit into tube configurations. Tubes are made by slitting two layers of fabric together with a heated knife, creating two flat seams at either side of the tube. Heat-slit fabric edges are melted or fused together to increase durability and to decrease fraying.
The heat-slit seam has a limited strength and should be used as a transport seam only, e.g. for injection molding.
All fabrics with thread diameters < 250 µm and mesh openings < 500 µm can be heat slit
Heat-slit tubes are specified by having a defined inner diameter. Diameters range from 8 to 320 mm
The inner diameter of the heat-slit tube does not equal the flat width of the tube itself. The effect of welded 'wings' on either side has to be taken into consideration. The width depends on the mesh type
Tubes are wound onto standard cores (polyester discs) which have an inner square hole of 30 x 30 mm and an outer diameter of 61 mm
Upon request tubes can also be rolled onto ABS rings with a inner diameter of 76 mm (3").
Depending on fabric type and tube dimensions, roll length of up to 500 m are possible.
Ultrasonically welded tubes
Fabrics, single and multilayer, can be ultrasonically welded into tube configurations. Tubes are made with one overlapping ultrasonic weld. Welds are accurate, clean and are made without the introduction of secondary material to the weld.
Tubes, cut to length
Tubes, cut to length, are segments cut from woven, ultrasonically welded or heat-slit tubes.
Packaging / labeling
Tube segments are packed into PE bags that are sealed
Tube segments made of SEFAR MEDIFAB fabrics are
The label contains the following information:
manufacturer, material, dimensions
(diameter in mm, length in m), manufacturing date,
order number, roll number, number of pieces per bag.
For industry/application specific use of ribbons see links below: