PROOF OF POROSITY
SUMMARY Determination and evaluation of the porosity of the interior varnish of a can by means of a high hardness test. It describes how to control the different parts of the boat. PRESENTATION Porosity means the smallest points inside a can protected with...
EVIDENCE TO CONTROL THE QUALITY OF APPLICATION OF VARNISHES
The protection both external and internal of a metal container by means of varnishes is a very normal technique that already has a history of more than 150 years. In other technical articles of this Web the varnishes are analyzed from different points of view: Their...
QA OF LITHOGRAPHIC MATERIALS
We will study in this work the defects that can be presented more frequently in the realization of a lithography, its classification and its control. It is understood as lithography of a material, the application of a complete external lithographic system, which may...
DETERMINATION OF THE WEIGHT DRY FILM OF VARNISH
One of the most used typical tests in the metagraphic sector, which may also have application in the packaging industry, is to determine the load of varnish that has been applied on the metal with which a container is to be manufactured (or has already been...
FACTORS AFFECTING VARNISHING OF THE TIN
The defects produced in the tinplate varnishing (faults, “eyes”, lack of adhesion …), may be due to, among other things: – A) Dust particles on the surface of the same. – B) Excessive oil residues. – C)...ADS
CONTINUED CONSULTANCY FOR THE METAL CONTAINER
