Rodillos de silicona líquida
For release-oriented, low-mark, clean-contact, and surface-sensitive roller applications.
Caso de adherencia de película CPE mate en rodillo
Residuo parecido a una película fina sobre el rodillo
Una línea de película CPE mate sufría acumulación de material sobre un rodillo de contacto recubierto de silicona líquida. El rodillo funcionaba bien recién recubierto, pero después de aproximadamente dos días empezaba a formarse una fina capa de residuo semejante a una piel.
Era difícil de limpiar, aumentaba el tiempo de parada, generaba desperdicio durante limpieza y arranque y afectaba al aspecto mate. Bajo la luz, la superficie parecía tener una capa fina levantada o desprendida.
Cuando se limpiaba esa capa, el efecto mate podía recuperarse. Esto indicaba que el problema estaba estrechamente relacionado con el estado de la superficie después del funcionamiento, no únicamente con la película.
Contacto con película caliente y sensibilidad del acabado mate
CPE matte film is sensitive to contact surface condition. In this type of film line, the roller is not only helping the material pass through the line. Its surface condition can also affect release, surface reflection, and the final matte appearance.
The line used a die temperature of around 220°C, and the roller worked in a hot film contact section. After repeated contact, the previous LSR cover began to hold transferred material on the surface. Once this residue layer formed, the film was no longer contacting a stable silicone surface. The contact became less consistent, and the matte effect became harder to maintain.
For this position, release behavior after running, heat stability, and easy cleaning were more important than simply matching the old roller as a normal replacement.
El recubrimiento LSR anterior no mantuvo la superficie estable
The earlier roller was also made with liquid silicone rubber, but the cover specification did not stay stable enough under the actual running condition. It could work at the beginning, but after heat, contact pressure, and repeated film release, the surface started to collect residue.
This kind of problem is common in demanding release positions. Two rollers may both be described as LSR rollers, but their actual behavior can be very different after production running. Compound design, curing condition, surface finish, hardness balance, and heat stability all affect whether the roller remains clean enough in service.
In this case, the earlier cover did not provide enough release stability and heat resistance for the CPE matte film position. The result was frequent cleaning, unstable surface condition, and reduced control over the matte film appearance.
Recubrimiento LSR ajustado para desprendimiento, calor y limpieza
Wolorin kept the liquid silicone rubber material direction, but adjusted the cover specification around the actual working condition.
The replacement roller was made with stronger release behavior for CPE matte film contact, better heat stability for the hot film section, and a surface condition that was easier to clean during production. The roller still had to match the original mounting dimensions, but the working surface needed to perform differently from the earlier cover.
The key was not only to reduce sticking when the roller was new. The more important target was to keep the surface from developing the same tenacious residue layer after continuous running. If light residue appeared, it needed to wipe off more easily instead of forcing a long shutdown.
Resultado
After the replacement LSR roller was used, the previous skin-like build-up did not appear in the same way. The roller surface no longer required the same long cleaning shutdowns, and light residue could be wiped off much more easily.
The matte film appearance also became more stable. Since the roller surface did not carry the same unstable residue layer, the film contact remained more consistent during production.
After this result, the customer continued using Wolorin LSR rollers. Several other roller positions on the same line were later supplied by Wolorin as well.
Qué revisar en líneas CPE mate similares
When a CPE matte film line sees sticking, skin-like residue, difficult roller cleaning, or unstable matte appearance after a short running period, the roller surface should be reviewed together with the film contact condition.
Useful information includes the film material, roller position, residue photos, running time before build-up, cleaning method, die temperature, contact pressure, old roller hardness, cover thickness, and surface finish. These details help confirm whether the next roller should be adjusted for release, heat stability, surface finish, cleanability, or a combination of these factors.
For similar material que se adhiere a las superficies de los rodillos de goma or hot film contact problems, Wolorin can review the old roller information and operating condition before confirming the replacement specification.
Compartir un problema similar
If your film line is seeing material sticking, skin-like residue, difficult roller cleaning, unstable matte appearance, or short cleaning intervals, you can send us photos of the roller surface, the film material, the roller position, and any known temperature or contact conditions.
You do not need to prepare a complete technical file before starting the discussion. If drawings, dimensions, samples, old roller photos, or clear specifications are available, you can send them directly for project confirmation. If the information is not complete yet, the first review can still start from the problem, the roller position, the contact material, and the surface condition after running.