The beveled edges on both sides of the seal on self-adhesive bags serve several practical purposes:
1. Easier to tear the seal
With beveled edges, the adhesive strip at the seal doesn't adhere completely, making it easier for users to find and tear open the bag without straining, thus avoiding damage.
This is the primary design purpose.
2. Prevents air bubbles or wrinkles at the seal
If the adhesive strip is at a right angle, air bubbles or wrinkles are more likely to form during sealing. The bevel allows air to escape more easily, resulting in a smoother, more aesthetically pleasing seal and improved airtightness.
3. Facilitates automated sealing in production
On automatic adhesive applicators or packaging machines, the beveled design allows for more accurate positioning during sealing, preventing bag jamming, tape rolling, or misaligned sealing, thus improving production efficiency and yield.
4. Preventing Sharp Corners from Lifting, Scratching, or Snagging on Other Bags
If the bag opening has right angles on both sides, it is prone to lifting, scratching, or snagging during stacking or packing.
Angled corners reduce the risk of friction and snagging,
resulting in neater packaging and a better customer experience.
The angled edges on the self-adhesive bag seal facilitate opening, prevent air bubbles, improve automation efficiency, and prevent damage from lifting corners, making it both practical and aesthetically pleasing.
