To have a close micro look
into label for barcode printing technology, we can dissect the label to
up to 7 layers or more layer of surface.
The 7 layer in sequence as
below:
- Top Coating or Over laminates layer
- Face Stock Layer*
- Primer Layer
- Adhesive Layer*
- Release Costing Layer
- Release liner Layer*
- Anti-Block Coating.
Anyway, the important layer in barcode label industry
basically is only 3 which are Face Stock Layer, Adhesive Layer and Release Liner
Layer.
Face Stock layer
is the material layer of the label, it can
be paper base material, film base material, and plastics base material, PVC
base material and so on. I summaries the name into below categories
AC – ART CARD
AP – ART PAPER
CP – CENIC YUPO
MC- MIRRORKOTE
SP – SILVER POLYESTER
WP – WHITE POLYESTER
MSP – MATTE SILVER POLYESTER
MWP – MATTE WHITE POLYESTER
Adhesive Layer
is the glue, so to speak, that keeps the
label stuck to its target object. In Barcode arena, we more enforce on Permanent
type or Removable type adhesive layer. The measurement use to measure the holding
force is N/mm (Newton/Meter).
Release Liner Layer
Is the layer that receives the release
coating, the material can be glassine paper with high internal strength, super calenderer
paper, plastic transparent material, poly-coated liner and etc.