{"id":5015,"date":"2026-07-04T08:00:12","date_gmt":"2026-07-04T08:00:12","guid":{"rendered":"https:\/\/wolorin.com\/?p=5015"},"modified":"2026-07-04T08:00:12","modified_gmt":"2026-07-04T08:00:12","slug":"film-roll-hardness-blocking-starring","status":"publish","type":"post","link":"https:\/\/wolorin.com\/es\/blog\/film-roll-hardness-blocking-starring\/","title":{"rendered":"Problemas de dureza del rollo de pel\u00edcula: Bloqueo, estrellado y zonas duras o blandas."},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Problemas de dureza del rollo de pel\u00edcula: Bloqueo, estrellado y zonas duras o blandas.<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

If a film roll is very hard near the core, loose on the outside, blocked after storage, or marked by hard and soft lanes, first find out where the problem starts.<\/p>

A roll that becomes too tight in the first few wraps needs different checks from one that turns soft only near full diameter. A hard lane that stays in the same position across the roll usually points in another direction, often film gauge variation or uneven contact.<\/p>

Blocking, starring, and uneven roll hardness can appear on the same line, but they do not always come from the same setting.<\/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

\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Rollo\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\r\n
\r\n\r\n
\r\n

Start with the Symptom<\/h2>\r\n\r\n
\r\n
\r\n \r\n \r\n \r\n \r\n <\/colgroup>\r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n
Lo que ves<\/th>\r\n Check First<\/th>\r\n <\/tr>\r\n <\/thead>\r\n\r\n
Film layers stick together<\/td>\r\n Which layers are blocked, film temperature, surface tack, storage<\/td>\r\n <\/tr>\r\n\r\n
Radial lines at the roll end<\/td>\r\n Where the starring begins between the core and outer layers<\/td>\r\n <\/tr>\r\n\r\n
One hard lane<\/td>\r\n Film gauge high spot or concentrated pressure<\/td>\r\n <\/tr>\r\n\r\n
One soft lane<\/td>\r\n Thin film area, trapped air, or weak contact<\/td>\r\n <\/tr>\r\n\r\n
Hard or soft edges<\/td>\r\n Edge gauge, slit condition, and contact on each side<\/td>\r\n <\/tr>\r\n\r\n
Hard inside, soft outside<\/td>\r\n Tension, torque, and lay-on pressure as diameter increases<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/div>\r\n\r\n
\r\n

Blocking happens between film layers. Starring appears as radial lines or spoke-like distortion at the roll end. Hard and soft lanes usually stay in one position across the width.<\/p>\r\n\r\n

Telescoping, dishing, and core shift are roll-shape problems. They need a separate check.<\/p>\r\n <\/div>\r\n <\/section>\r\n\r\n

\r\n

Check Where the Problem Starts<\/h2>\r\n\r\n
\r\n\r\n
\r\n 01<\/span>\r\n\r\n
\r\n

Near the Core<\/h3>\r\n\r\n

The first wraps carry the rest of the roll. If they are wound too tightly, the inner layers may block, distort, or start to star.<\/p>\r\n\r\n

Check the starting tension, winding torque, lay-on pressure, and core condition.<\/p>\r\n\r\n

A weak or damaged core can make the problem worse, but do not assume the core is the cause before comparing the winding record.<\/p>\r\n <\/div>\r\n <\/article>\r\n\r\n

\r\n 02<\/span>\r\n\r\n
\r\n

In the Middle of the Roll<\/h3>\r\n\r\n

When the problem starts halfway through the roll, look for something that changed at that diameter.<\/p>\r\n\r\n

It may match:<\/p>\r\n\r\n

    \r\n
  • a tension or pressure change;<\/li>\r\n
  • a control-stage change;<\/li>\r\n
  • a speed increase;<\/li>\r\n
  • a splice;<\/li>\r\n
  • a new film batch.<\/li>\r\n <\/ul>\r\n\r\n

    Record the diameter where the defect begins. That point is usually more useful than the final setting shown on the machine.<\/p>\r\n <\/div>\r\n <\/article>\r\n\r\n

    \r\n 03<\/span>\r\n\r\n
    \r\n

    Near the Outside<\/h3>\r\n\r\n

    Soft outer layers often mean that tension, winding torque, or lay-on pressure dropped too quickly as the roll grew.<\/p>\r\n\r\n

    Air can also remain between the last wraps when contact is too light for the line speed and film surface.<\/p>\r\n\r\n

    If only the outer layers block, check late-stage pressure, film temperature, and how soon the roll was wrapped, stacked, or stored.<\/p>\r\n <\/div>\r\n <\/article>\r\n\r\n <\/div>\r\n <\/section>\r\n\r\n <\/div>\r\n<\/section>\r\n\r\n