Compliance work

Overall migration Sensory analysis

specific migration

Material analysis

Mechanical properties

permeation

PPWR/ Recycling

Printing inks and coatings/ lacquers- Fastness;Suitability tests, resistance, hot alkali resistance

The tests may be carried out on printings, coatings on flexible substrates such as films or paper. We can test the suitability and resistance to various environmental influences, food fastness, chemicals, fastness, bleeding, deep freezing, sterilization, pasteurization, scratching, wrinkling, etc. If your special requirement is not mentioned here, please contact us.

Test Method Group: Mechanical properties

Norms:
  • Sun Chemical Hartmann PV 16 (11/2002) Determination of the deep freeze resistance
  • ISO 12632 (2015-12-15) Graphic Technology - Ink, Paper and Labels_Requirements for Hot Alkali Penetration and Resistance
  • Sun Chemical Hartmann PV 03/03.1 (11/2002) Determination of wrinkle resistance resp. wet wrinkle resistance
  • ISO 2836 (2021-05) Graphic technology-Prints and printing inks-Assessment of resistance of prints to various agents
  • DIN EN ISO 105-A03 (2020-02) Textiles – Tests for colour fastness – Part A03: Grey scale for assessing staining
  • DIN 16524-5 (2012-06) Testing of prints and printing inks in graphic technology – Resistance to various physical and chemical influences – Part 5: Resistance to sterilization with autoclave

Required Sample Amount: Sample over total width of material, minimum 5 repeating patterns

Standard Tests

wrinkle resistance

Specific Norm: PV 03/ PV 03.1 SunChemical- Hartmann Druckfarben

Testing of the sample after storage in medium, e.g. water or other, under specified temperature for a defined period of time.

Bleeding fastness

Specific Norm: ISO 2836

This test method is used to test the resistance/color fastness of a print or lacquer to solid materials/media that can cause bleeding (color transfer). The solid media can be, for example, foodstuffs such as cheese or meat, technical products such as waxes, plastics containing plasticizers or natural materials. The printing/lacquering is contacted with the solid medium and, after a specified time under specified contact conditions, a test of the medium and the test surface for color changes is carried

Deep freeze resistance

Specific Norm: Sun Chemical Hartmann PV 16

The sample is wetted with water, frozen at -20 °C for min 2 h and then tested for wrinkle resistance.

resistance against media 1- immersion method (for solvents and other volatile media)

Specific Norm: ISO 2836

This test method is used to check the resistance of a print or lacquer to the impact of volatile media such as solvents, solvent-containing cleaning agents, gasoline, etc. The printed or lacquered material is immersed in the liquid medium for a specified period of time under specified conditions (safety regulations must be followed in the case of flammable and easily combustible media) for changes of the print surface or color changes of the medium.

Bleeding fastness-Copy

Specific Norm: DIN 16524-5

This method is used to test the resistance of a print or coating/ laqcuer against steam sterilization (or full water sterilization on request) at Tmax.= 121 °C for 30 min.

Sterilization resistance 130°C/ 30 min

Specific Norm: DIN 16524-5

This method is used to test the resistance of a print or coating/ laqcuer against steam sterilization (or full water sterilization on request) at Tmax.= 130 °C for 30 min.

Media resistance 2- (for non-volatile liquids such as acids, alkalis, liquid soaps, detergents, etc.)

Specific Norm: ISO 2836

This test method is used to test the resistance of a print or lacquer to non-volatile, liquid media. The printed or lacquered surface is brought into contact with a media-soaked filter paper and this combination is stored between weighted glass panels.

Alkali- resitance against hot soda lye (e.g. for label materials)

Specific Norm: ISO 12632

A specified area of the printed (label) material is stirred in 2.5 % (m/m) caustic soda solution at 85 °C for 20 min at 250 rpm. The evaluation includes inspection of the surface of the (label) material [separation of layers (ink and paper), colour changes] and the colour of the solution. For comparative tests, the ink layer thickness of the test prints must be comparable, e.g. with printed labels.
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