Quality Room Checks

Quality checks are a vital part of our work at Seaways. We strive to ensure that all products that leave us are to the approved standards of the customer. We believe it’s important that you’re aware of what checks and procedures are carried out at Seaways.

– No eating or drinking within the factory.
– Cotton gloves to be worn when packing.
– Hair nets/bump caps to worn by anyone within the factory, at all times.
– No jewellery.
– All hygiene standards must be followed.
– No metal to glass contact.
– Unique packer numbers applied to label.
– Glass to be stacked correctly, with equal spacing.
– Palletised glass not to be over maximum height. Refer to customers packing specification.
– No pallets or boxes to be left uncovered.
– Substantial protective pallet covers used, 12 month UV protection.
Dyne Pen – A Dyne pen is used to measure the surface energy on glass, this is to ensure there are no substances present which
would prevent us achieving maximum adhesion.
Print Defects – Unlike most printers, we have constant print defect checks throughout the entire production runs.
Print Alignments – Our hand printers carry out alignment and height checks during printing, preventing anomalies.
Isopropanol – Isopropanol, a chemical compound and the simplest example of secondary alcohol. The compound is applied
to the cured print to test the ink adhesion, typically used in Low Fired print jobs.

MEK (Methyl Ethyl Ketone) – MEK, an organic compound. A stronger liquid, applied to High Fire prints which are not suitable for Caustic testing. Again used to test the ink adhesion.

Caustic – Caustic Test, this essentially is to simulate a prints lifetime of reuse from industrial dishwashers. Enables us to check
the durability of the ink in this situation. Used for High Fire prints.

Scratch – Scratch Tests, self explanatory. Prints are scratched to test the adhesion of the ink to the glass.

Sellotape – Whilst an older method of testing adhesion, Sellotape tests are still beneficial to ensuring the print durability. Typically used on Low Fire jobs.

Annealing – An annealing test is carried out on the glass after it has been cured in our Lehr, this tests the stress within the glass.

PSI Ramp Pressure Test – A test carried out upon the glass to ensure that the curing process has not weakened the glass in any way, an essential test when the intended product is packaging for carbonated drinks.

Slip Angle Test – Test to measure the efficiency of the cold-end coating. Cold-end coating is applied to glass as it exits our Lehr, this lubricates the glass and allows them to move along conveyors and be packaged tightly without damaging the glass & print.

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