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Identification & Functionality
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Features & Benefits
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Sheet-fed offset inks for printing food packaging shall not have any adverse effect on either the odor or the taste of the package contents. The development of a new, special vehicle and the use of specially selected solvents, raw materials and production methods has enabled us to create low migration, low odor sheet-fed offset inks.
The MGA NATURA ink series is formulated mineral oil-free.
Classification
- According to the CLP Regulation: none.
- According to the Regulation of Flammable Liquids: none Material Safety Data Sheet available on request.
- Please refer to the contact of your local supplier.
- Basic requirements for food packaging
Food packages shall not transfer any substances to the packed food stuff that
- Endanger human health.
- Influence the odor or taste of the packed food
- Influence the composition or appearance of the packed food.
Sheet-fed offset printing inks that are used in the manufacture of food packaging in which the packaged food is in direct contact with the unprinted inside of the packaging must therefore be lowmigration inks and have no adverse effect on either the odor or the taste of the packaged foodstuffs. MGA NATURA is a low migration and low-odor offset ink series for printing of food contact materials. The inks are formulated mineral oil free and do not contain any drier to support drying by oxidation.
Applications & Uses
- Applications
- Compatible Substrates & Surfaces
- Technical Applications
MGA NATURA inks have very good, trouble-free printing characteristics. Since they do not dry by oxidation, finishing with water-based coating is essential. Without coating, an adequate degree of rub resistance will not be obtained.
ACRYLAC MGA water-based overprint varnishes have been developed to meet the requirements of the production of food packaging printed with MGA NATURA inks. The same is true for MGA fount concentrates and printing auxiliaries.MGA NATURA inks can be used in a similar way to conventional inks and are suitable for use in all sheet-fed offset presses and on all absorbent stocks. The applied single film thickness should not exceed 2 g/m²
Application instructions
Fount solution delivery and composition:
Delivery of the fount solution on the press must be kept to an absolute minimum particularly when the level of ink application is low – in order to prevent excessive emulsification and poor coating quality associated with this. The isopropanol concentration in the fount solution, when using MGA COMBIFIX
8060, should not exceed 10 % at a pH value of 5.0 - 5.4.
The hubergroup has developed fount concentrates for use specifically with these products:
▪ MGA COMBIFIX 8060 (for printing with IPA)
▪ MGA SUBSTIFIX 8360 (for printing without IPA)
ACRYLAC MGA water-based overprint varnishes
The following water-based overprint varnishes have been developed specifically for finishing MGA NATURA inks:
▪ Glossy and rub-resistant coating for single-sided coating: ACRYLAC MGA Gloss S 58MGA1300
▪ Wet-blocking-resistant and rub-resistant coating: ACRYLAC MGA GIoss 58MGA1000
If required, other ACRYLAC MGA types with additional special properties can be supplied.
Printing auxiliaries / Ink mixtures
To reduce ink tack, use only MGA NATURA Print Oil 10MGA1405P or MGA Thixoprint 10MGA9998. In general, oils are more difficult to admix than pastes. Standard printing oils, paste reducers or the like shall not be used, under no circumstances.
▪ MGA NATURA Print oil - 10MGA1405P
The recommended concentration of additive to use is max. 3%.
With an additional quantity of 3%, the tack of the ink is reduced by approximately 2 points.
▪ MGA Thixoprint - 10MGA9998
The recommended concentration of additive to use is max. 5%.
With an additional quantity of 5%, the tack of the ink is reduced by approximately 2 points.
MGA NATURA inks shall only be mixed with other MGA inks. Driers or drying accelerators shall not be added, under no circumstances, because this would lead to the generation of strong-smelling decomposition products.
Post-print finishing
The waiting time before the print sheets can be further processed is similar to that for conventional inks. It depends on the quality of the substrate. Tests should be carried out in specific cases prior to beginning a production run.
Roller treatment / Wash-up
Due to the negative effect on printed packages with respect to odor and taste, the press rollers shall not be sprayed with ANTISKIN 10T1200 or INKFIT 10T3303. After washing the rollers, leave them to dry well.
Properties
- Color
- Fastness Properties
Fastness properties as per ISO 2836/12040. In addition to the process colors, we can also formulate any shade you would like on the basis of MGA NATURA 5250.
MGA NATURA Light WS Alcohol Solvent mixture Alkali Drying/Setting Black 49MGA5250 8 + + + by setting only - Properties
- Sheet-fed offset printing ink series for printing the non-food contact surface of food packaging made of paper and board
- Printing ink for food contact materials (FCM ink) according to the EuPIA definition
- Overall migration < 10 mg/dm²
- For applications at higher temperatures we recommend to test the migration with the actual conditions.
- Organoleptic assessment of printed products produces excellent results („Robinson test“ EN 1230 Part 1 and Part 2)
- Allows printed food packaging to meet the requirements of Regulation (EC) No 1935/2004 as well as of US FDA provisions for food contact materials
- For articles intended to be filled, treated or stored for a longer period of time at temperatures higher than 200 °C, special heat-resistant inks of our MGA CORONA series (MGA5220) must be used. For ovenable packaging and for packaging with microwave susceptors, the use of these inks (MGA5220) is generally recommended, as thermostats of domestic ovens show wide variation, and microwave heated packaging with susceptors may well exceed temperatures of 200°C.
- Stable ink/water balance on the press
- Fast setting speed
- The fact that the inks do not dry by oxidation means that no substances are generated which are organoleptically objectionable, such as short-chain aldehydes. Printed products made using MGA NATURA inks therefore also have low hexanal content
- Formulated mineral oil-free
- Color shades in compliance with ISO 2846-1
- Perfectly fit for production according to ISO 12647-2
Special Properties
- Very fast setting allows quick post-print processing.
- Mineral oil free.
- Potential migration well below regulatory limits.
- Very good organoleptic properties (low odor, low taint).
- MGA NATURA inks are produced in line with stringent GMP/MGA rules in segregated, specifically adapted production areas.
- Risk analysis of the production workflow.
- Confusion of raw materials excluded by SAP software system.
- Analytical quality control testing of the batches.
- 100% batch tracing throughout the entire production chain, right through to the raw materials.
- Good rub-resistance in combination with mandatory water-based coating (ACRYLAC MGA).
- With statement of guarantee for the user.
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Quality Standards
- Regulations
The inks are designed, formulated and manufactured, and the raw materials selected according to the EuPIA-GMP "Printing Inks for Food Contact Materials". All ingredients are listed in annex 2 or 10 of the Swiss Ordinance on materials and articles in contact with food (SR 817.023.21). The binder system of MGA NATURA is based on special fatty acid esters which are approved for food contact. The ink series is recommended to produce food packaging which is compliant to Regulation (EC) 1935/2004.
The manufacturer of the packaging has to do a risk assessment and appropriate quality control to ensure that any migration to the packed foodstuff will not exceed legal limits. Information on substances used or known to be present with the potential to migrate, including possible restrictions, is provided in the respective “Statement of Composition”, to allow members of the packaging chain to assess compliance of the printed packaging with the Framework Regulation (EC) No. 1935/2004 and/or Swiss Ordinance 817.023.21.