We manufacture solvent and water-based inks, lamination adhesives, coatings and sealants engineered for flexible packaging, corrugated board and textile printing — compliant with EU and FDA standards.
Both close a pack, and that is where the similarity ends. One bonds under pressure alone, the other needs heat. Here is each process, step by step.
Paper or film is coated with a cohesive that bonds only to itself.
Coated surfaces face each other as the material feeds through.
Nip rollers press and seal instantly, with no heat at any point.
A slider or press-to-close zipper is added during pouch making.
Peel tests confirm seal strength for cold storage and transit.
A laminate with an LDPE inner layer, chosen for clean thermal bonding.
The web is set in the VFFS or HFFS former, sealant layers facing each other.
Thermal energy melts the LDPE while the jaws press the layers together.
As the jaws open, the molten layer solidifies into a strong seam.
The zipper track is sealed to the top for a reclosable pack.
Heat-activated and pressure-activated sealing chemistry for flexible packaging converters.
Solvent-based lacquers that seal aluminium foil, polyester and laminated film onto rigid containers under heat.
Water-based latex that bonds to itself under pressure alone — no heat reaches the packed product.
FROM THE TECHNICAL LIBRARY
Two short reads from our resource centre, with the numbers we actually specify against.
01HEAT SEAL
Food lid foils and pharmaceutical blister foils overlap only at the top of the range. That is why the useful question is never whether a heat seal lacquer is good, but which application, on which substrate, at which temperature.
Food lid foils120-190
Blister foils180-220
100140180220
Typical market requirements, not a product specification.
02COLD SEAL
Cold seal is a water-based latex that bonds only to itself, under nip pressure alone. Removing heat removes three waiting periods from the line, and every risk of thermal damage to the product.
Read the full articleNo heat-related damage
Eliminates thermal blooming on sensitive products such as chocolate, and preserves both substrate and product form.
Uninterrupted high speed
Maximum production output. Continuous line performance, with no pause to heat, dwell or cool.
Substrate integrity
Packaging material stays unwarped and unmelted, which is what makes it suitable for thin film and foil layers.
Nilkimtek is a chemical manufacturer serving the packaging and converting industry. Our production line develops inks, adhesives and coatings for BOPP, PET, BOPA, CPP, PE, aluminum foil and paper substrates. Our aim is consistent print quality, strong adhesion and reliable seal performance across food and non-food applications.
Our formulations are developed with reference to relevant EU and FDA food-contact regulations. Technical data sheets (TDS) and safety data sheets (SDS) are available for every product line on request.