Blogs
Vacuum Web Coating: Pinholes
We came across one question answered by you ( dtd.Feb.2, 2009. "How are these pin holes formed ?") on internet regarding the pin holes in metallized PET film. Is that pin holes are like sieve or unmetallized / metal removed portion of the film? How to detect the same is only metal removed area or
Extrusion Coating Blog: Slip transfer in laminations-
When a laminated film or any film, is wound into a roll, the transfer of slip from one surface of the lamination to the other surface will occur. This transfer of slip (or other migratory additives such as antistat or...
Specialty Web Coating Blog: New Solar Gard© Automotive Window Film Hits The Market
Did you see this on the AIMCAL website? (www.aimcal.org) Solar Gard Supreme and Solar Gard Ultra Performance are now available in the United States. Both Solar Gard offerings give consumers exceptional solar control, ultraviolet light protection, color stability and a...
Vacuum Web Coating: Question re. Decline in metal coating surface energy
Q. As you know, dyne level on metal side of BOPP metallized film drop very fast within a few days. Do you think dyne level reduction on BOPP film before metallized will help to maintain dyne retention after metallization still high ?. For example, if metallization conducted on BOPP with 40 dyne,
Vacuum Web Coating: tacky roll cleaning
Q. Do you think it’s more effective to install the tacky roll inside of vacuum chamber ? .. put it just before alu deposition ?.. any recommendation on tack roll supplier ? A. Most of the time the decision gets...
Vacuum Web Coating: Barrier webinar - Question relating to metallization variations
Q: Some metallized PET films have very good barrier, but some are bad even though optical densities are the same. A: Correct. The optical density is a measure of the average optical density of an area of coated material. It...
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: Problem of wrinkles in cast polypropylene (CPP) films
Q: I have a question about CPP metallized, what I can do to avoid the wrinkles in the cooling drum deposition because with BOPP metallized we don’t have this problem. The raw material of the base to metallized has to...
Vacuum Web Coating: Q & A from Barrier coatings webinar
Q: Why is it harder to achieve acceptable coating adhesion on OPP's that have been aluminum deposited metalized? Answer: The metallization process takes the film to a high temperature and it is thought that this will speed up the migration...
