What Causes Web Tracking Problems Around Rollers? When a film, foil, paper, nonwoven, or other web material starts drifting across the line, the problem is usually easy to see but harder to locate. The edge will not stay in position. The web may snake from side to side. Slit width may change. One edge may […]

Re-Cover or Replace a Rubber Roller: How to Decide If you already have an old rubber roller, the first step is not to decide the rubber material. Start with a simpler question: is the old roller still a good base, or should the next roller be made as a new replacement? For some low-speed or

Common Slitting and Rewinding Problems When a slitting and rewinding line starts showing wrinkles before rewinding, repeat marks, unstable edges, loose or hard roll areas, slipping, or tension swings, the defect often becomes visible near the rewind section. The cause may have started earlier. After the web is slit, each strip has less width to

Why Does a Rubber Roller Wear Out Too Fast? When a rubber roller wears out too quickly, the line usually shows the problem first. The surface may turn rough, shed powder, lose diameter, wear heavily at the edges, or start leaving rougher contact marks on the material. Sometimes the roller still runs, but the replacement

What Rubber Roller Cracking, Swelling, Softening, or Hardening Usually Means When a rubber roller starts cracking, swelling, softening, hardening, or becoming sticky, the surface is already showing useful evidence. These problems often appear on coating and laminating lines, printing lines, film converting lines, paper converting equipment, acid washing sections, and other roll-to-roll machines where the

Why Does Material Stick to Rubber Roller Surfaces? When film, foil, paper, nonwoven, coated stock, adhesive layer, ink, or residue starts picking up at one contact point, the line usually shows it quickly: dirty transfer, drag marks, uneven coating, web pull, or repeated cleaning stops. The first useful checks are simple. Look at what is

Common Coating and Laminating Defects On a coating or laminating line, defects usually show up in very practical ways: adhesive starts building up on a roller, a line keeps appearing on the coated surface, a mark shows after the lamination nip, or the web begins to wrinkle after drying. These problems are common on flexible

What Causes Web Wrinkles in Roll-to-Roll Lines? When a moving web starts to wrinkle, start with the first place where the wrinkle appears. In film converting, slitting, rewinding, coating, nonwoven, paper, and foil lines, wrinkles often show up after a change in tension, speed, web path, material thickness, static behavior, or winding contact. A wrinkle

What Causes Surface Marks and Lines on Web Materials? If surface marks, lines, pressure impressions, or repeat marks appear on thin film, coated webs, nonwoven, paper, foil, or metal strip materials, the first question is simple: where did the mark start? Some marks are already present in the incoming roll. Some become visible after coating,