CHEMICAL-PHYSICAL TEST PRE-PRINTING PRODUCTS AND ADHESIVES
CHEMICAL-PHYSICAL TEST PRE-PRINTING PRODUCTS AND ADHESIVES
Physical and chemical tests are essential to ensure that the material complies with the quality standards required in the transformation process.
The checks can be performed during the acceptance phase, intermediate aging and in the requalification phase.
The quality of the finished product strongly depends on the chemical and physical characteristics of the product materials.
The following tests allow to verify the principal characteristics of interest to principal production processes.
TIPOLOGIA PROVA | METODO | SCOPO DELLA PROVA |
Pot life sticker |
ASTM D2471
|
Working time of the adhesive |
Thickness |
ASTM D3171
|
Adhesive thickness |
DSC sticker |
ASTM D3418
|
Check Tg of pre-polimer and crosslinking peak |
Content of constituents in prepregs |
ASTM D3529
|
Resin Content/Fiber Content/Prepreg Surface Weight |
Volatile content in prepregs |
ASTM D3530
|
Volatile content |
Prepreg resin flow |
ASTM D3531
|
Flowability evaluation (prepreg, adhesive) |
Gel time prepreg |
ASTM D3532
|
Gelling time |
Adhesive weight |
Metodo interno
|
Superficial adhesive weight |
Free expansion |
Metodo interno
|
Free expansion assessment |