There’s a reason SCK is so prevalent in the North American market over glassine. Simply put, this paper material does what we need it to do with little fanfare.
North America is partial to SCK because it meets the requirements needed for labels to work without the added cost associated with glassine: smooth surface, easy release, durability in most application processes.
Our thought process is, “Why pay more for glassine when SCK works just as well?” And it’s a valid point.
Glassine has performance attributes that make it a premium product:
- Thinner liner adds more labels to a roll
- Less silicone achieves a better release
- Easier die-cutting
- More sustainable option
However, customers in the U.S aren’t chomping at the bit for all of these bells and whistles. We’re happy to use SCK with no extra performance features, which is why it’s still such a prevalent material.
In fact, if North American users have to switch away from SCK to another material, we’re more likely to use PET liner before glassine.
PET liner is film material that functions the same as glassine, especially in high-speed dispensing environments, like conveyor belts in a warehouse or during the SLAM process at an Amazon Fulfillment Center.
Also, glassine is the most expensive out of all the paper materials for release liner. Given that prices are constantly changing, it’s a rule of thumb that glassine is usually 20% more per ton than SCK.
Customers aren’t going to spend more on glassine when cheaper alternative options are available.