Common Textile Processing Problems Textile processing problems usually show up on the fabric first: edge drifting, wrinkles, unstable tension, wet streaks, pressure bands, shiny marks, high residual moisture, or finish damage. Start from the first place where the fabric changes. Check the edge, width, moisture profile, surface feel, tension response, and winding result. If the

Common Surface and Contact Problems in Leather and Synthetic Leather Processing Surface marks on leather or synthetic leather often start after one contact point. The product may show a light pressure mark, gloss change, flattened grain, coating transfer, drag mark, sticking, or unstable feeding. Before changing the roller specification, find where the surface first changes.

What Problems Can Roller Runout, Misalignment, or Eccentricity Cause? Repeat marks, one-side pressure bands, vibration, and web tracking drift are not always caused by the rubber surface. The cover may look clean. The hardness may still be close to the drawing. The problem may come from how the roller rotates, how it is mounted, or

Common Lithium Battery Material Line Problems Particles on separator film, static attraction around foil, faint marks on coated web, and tension drift often start as small changes around one section of the line. Dust collects after a contact area. The web edge begins to wander at higher speed. A light line appears after heated contact.

Common Flexible Packaging Converting Problems Flexible packaging defects often look like they started at the last station, because that is where the defect becomes easy to see. A light contact mark may begin near a printing nip, become clearer after adhesive contact, change again after lamination heat, and finally show as a winding mark on

Common Plastic Sheet and Board Processing Problems Plastic sheet and board problems often become visible after the material leaves the cooling, polishing, haul-off, or downstream support area. The sheet may still move through the line, but the surface begins to show fine lines, pressure imprints, gloss bands, drag marks, or unstable traction. For thicker sheet

Common Foil and Metal Strip Processing Problems Foil and thin metal strip problems often show up as very light surface lines, scratches, pressure marks, edge drift, or sudden tension changes. On bright, soft, coated, or surface-sensitive metal, a small contact issue can become visible quickly. The mark may look minor under normal light, but it

Common Paper Converting Problems Paper converting problems usually show up first as small changes on the sheet: paper dust, dirty streaks, pressure lines, dents, coating marks, rewinding marks, or a paper web that slowly moves off track. A useful check starts at the first visible position. Look at where the mark appears, which roller the

Common Web Handling Problems in Nonwoven Processing Lines A nonwoven web can look stable at the unwind, then start showing pressure marks, flattened fiber areas, dust bands, static pickup, edge waviness, or surface pattern change after one section of the line. These problems are easy to misread because nonwoven material is a fibrous web, not