Blogs
Vacuum Web Coating: Response to question re. pinholes
Question As far as the source of the pinholes concerns, besides of having a visual inspection and comparison of the appearance of the pinholes, what other type of analysis could be considered in order to be able to understand and therefore eliminate the problem? What would be the recommendation to
Web Handling & Converting Blog: Vacuum Metallizer Alignment
Paper mills have long known that precision (usually optical) roller alignment was necessary to reduce waste and delay such as caused by web breaks and wrinkles. Film people are now figuring it out. Printing press manufacturers (for both paper and...
Extrusion Coating Blog: Ordering the AIMCAL Metallizing Handbook
Haim Korkus asks where he can purchase the AIMCAL Metallizing Technical Reference. The Technical Reference was published by AIMCAL, the Association of Industrial Metallizers, Coaters and laminators. Their web site is: www.aimcal.org. Once at the web site you can go...
Vacuum Web Coating: Webinar Barrier Q & A - overcoating
Q: Any examples of good silica or quartz coating manufacturers for overcoating aluminum metallizing? A: I am not sure of anyone who routinely used metallized film as a substrate for silica coating. Do you have to have a silica coating...
Vacuum Web Coating: Barrier webinar Q & A - Problem with metallization?
Q: If I have a OPP metallized film with aluminium with low WVTR values but with high OTR values, what this is indicate ? Problem with metallization process or extrusion process ? A: I would check the uncoated film and...
Vacuum Web Coating: Question on free span metallizing from the recent webinar
Q: what are the major disadvantages to a free span metallizer? Generally the limitation of free span metallizing is managing the heat load. As there is no heat removal from the web the deposition rate is usually limited. This usually...
Web Handling & Converting Blog: Wrinkles in a Vacuum Metallizer
Thin film is wrinkle prone on any machinery and that certainly includes vacuum metallizers. Yet given all of the ordinary sources such as imperfect webs (bagginess etc) and imperfect rollers (alignment and diametral tolerances), metallizers have one additional serious mode...
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