{"id":5001,"date":"2026-07-04T07:59:43","date_gmt":"2026-07-04T07:59:43","guid":{"rendered":"https:\/\/wolorin.com\/?p=5001"},"modified":"2026-07-04T07:59:43","modified_gmt":"2026-07-04T07:59:43","slug":"wound-roll-shape-defects","status":"publish","type":"post","link":"https:\/\/wolorin.com\/es\/blog\/wound-roll-shape-defects\/","title":{"rendered":"Defectos en la forma del rollo enrollado: Telescop\u00eda, abombamiento, bordes sueltos y problemas en el n\u00facleo."},"content":{"rendered":"
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Defectos en la forma del rollo enrollado: Telescop\u00eda, abombamiento, bordes sueltos y problemas en el n\u00facleo.<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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A finished roll may have stepped layers, a curved face, loose edges, or a core that has moved inside the roll. Some problems show up while the roll is still winding. Others appear after unloading, transport, or storage.<\/p>

Before changing settings, look at the roll face, note when the problem starts, and see which side moves.<\/p>

If the problem starts close to the core, check the core and the first wraps. If it starts only after the roll gets larger, compare tension, torque, pressure, and material thickness across the width. If the roll changes after unloading, check how well the core and inner layers are holding the roll together.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What Does the Roll Face Look Like?<\/h2>\r\n <\/div>\r\n\r\n
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Lo que ves<\/th>\r\n Check first<\/th>\r\n <\/tr>\r\n <\/thead>\r\n\r\n
Telescoping \u2014 the layers move sideways and one roll face sticks out<\/td>\r\n Starting wraps, core holding, tension and torque changes, side pull, thickness across the web<\/td>\r\n <\/tr>\r\n\r\n
Dishing \u2014 the roll face curves inward or outward<\/td>\r\n Thickness across the web, core position, web entry angle, machine alignment<\/td>\r\n <\/tr>\r\n\r\n
Loose edges \u2014 one edge looks soft, raised, feathered, or stepped<\/td>\r\n Incoming edge condition, lane tension, starting wraps, local thickness difference<\/td>\r\n <\/tr>\r\n\r\n
Offset or loose core \u2014 the core sticks out more on one side, turns, or moves<\/td>\r\n Core ID, chuck or shaft fit, starting tension, first wraps<\/td>\r\n <\/tr>\r\n\r\n
Core crush \u2014 the core becomes oval, buckles, or collapses<\/td>\r\n Core strength, chuck expansion, unsupported length, lifting and stacking<\/td>\r\n <\/tr>\r\n\r\n
The roll changes later \u2014 the roll looked acceptable on the machine but moved afterward<\/td>\r\n Inner-layer stability, core support, unloading, transport, storage<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/div>\r\n <\/section>\r\n\r\n
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Telescoping<\/h3>\r\n\r\n

A telescoping roll has layers that move sideways in steps. One face extends outward, while the other pulls inward. A severe roll may start to look conical.<\/p>\r\n\r\n

If the shift starts near the core, look at the first wraps and how the core is held. If it starts later, check what changed as the diameter increased.<\/p>\r\n <\/article>\r\n\r\n

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Dishing<\/h3>\r\n\r\n

A dished roll has a face that curves inward or outward instead of staying flat.<\/p>\r\n\r\n

This often happens when one side of the roll builds faster or tighter than the other. Thickness variation, web angle, core position, and alignment are common places to start.<\/p>\r\n <\/article>\r\n\r\n

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Loose Edges<\/h3>\r\n\r\n

A loose edge may feel softer than the center of the roll. It may also look raised, feathered, or uneven.<\/p>\r\n\r\n

Check whether the edge was already loose before winding. If only one slit roll has the problem, compare that lane with the rolls beside it.<\/p>\r\n <\/article>\r\n\r\n

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Offset or Loose Core<\/h3>\r\n\r\n

An offset core sticks out farther on one side. A loose core may turn or move inside the finished roll.<\/p>\r\n\r\n

Check the core fit, chuck or shaft support, starting tension, and how the web was attached to the core.<\/p>\r\n <\/article>\r\n\r\n

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Core Crush<\/h3>\r\n\r\n

Core crush may appear as an oval opening, a collapsed wall, or damage around the chuck area.<\/p>\r\n\r\n

Start with the core itself. Look for moisture, old damage, poor fit, too much chuck expansion, or too much unsupported length.<\/p>\r\n <\/article>\r\n\r\n

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The Roll Changes after Unloading or Storage<\/h3>\r\n\r\n

A roll may look straight while it is still on the winding shaft, then move after it is taken off.<\/p>\r\n\r\n

Take a photo before unloading and another one afterward. If the shape changes again during storage, also check how the roll was supported, lifted, transported, and stacked.<\/p>\r\n <\/article>\r\n <\/section>\r\n\r\n <\/div>\r\n<\/section>\r\n\r\n