Kao Collins Sigma+ TSK3646 Solvent Ink Cartridge for Films, Foils and Metallized Packaging

Meet the Kao Collins Sigma+ (TSK3646) Ink Cartridge, the next generation of the Sigma solvent family for HP 45si / TIJ 2.5 industrial inkjet printers. Kao Collins formulated Sigma+ for the highest level of durability and adhesion across substrates, with extremely fast drying, so date, lot and batch codes hold on polyethylene, PET, polypropylene, nylon and metallized films where other inks bead, smear or rub off. It is our lead recommendation for flexible food and beverage packaging.

Key Features of the Kao Collins Sigma+ Ink Cartridge

• New Genuine OEM Product: A brand-new HP 45si-series cartridge filled with Kao Collins proprietary Sigma+ ink, not recycled or remanufactured.
• Highest Adhesion in the Sigma Family: Kao Collins describes Sigma+ as delivering superior performance on any surface, with high adhesion across substrates.
• Extremely Fast Drying: Codes set quickly on film and foil without an external heat source, keeping high-speed bag and pouch lines moving.
• Long Decap: Over 16 hours per Kao Collins, so nozzles stay ready through shift changes and overnight idle.
• Packaging Compliance: EuPIA guideline for printing inks on non-contact surfaces of consumer packaging, REACH SVHC, Non-CMR, PFAS free.
• Bulk Use Suitable: Rated by Kao Collins for bulk ink delivery systems.
• HP TIJ Compatible: Fits HP 45 / HP 45si / TIJ 2.5 industrial inkjet printers.

Why Choose Kao Collins Sigma+ Ink?

Non-porous flexible packaging is the hardest place to hold a code. Polyethylene and nylon films have low surface energy, metallized films add a slick aluminum layer, and every one of them moves fast through a form-fill-seal or bag line. Sigma+ was built for that job: solvent chemistry that bonds to the film surface, dry times that keep up with the line, and a decap long enough to survive normal stops. As a genuine Kao Collins OEM product, it delivers consistent results batch after batch.

Applications for Sigma+ TSK3646

• Bag-in-Box and Pouch Lines: Date and lot codes on syrup bags, liquid pouches and laminated film packaging for food service.
• Flexible Packaging: PE, PET, PP and nylon BOPP films, foils and laminated papers.
• Metallized and Foil Packaging: Aluminum-faced films, blister foil and lidding.
• Coated Cartons and Rigid Plastics: UV-coated and varnished folding cartons, PVC and hard plastics.

Substrate Compatibility and Specifications

• Ink Type: Solvent-based
• Color: Black
• Substrates (Sigma family, per Kao Collins): nylon BOPP, PE, PET, PP, OPP, PVC, foils, aluminum, laminated papers, blister foil, aqueous varnish coat, UV coats, some metals
• Decap Time: Over 16 hours per Kao Collins
• Shelf Life: 12 months from fill date. Order to consumption rather than stockpiling.
• Compliance: EuPIA, REACH SVHC, Non-CMR, PFAS free
• Manufacturer: Kao Collins
• Technology: HP Thermal Inkjet (TIJ), HP 45si

Cross-Reference and Compatibility

• Genuine OEM Part Number: Kao Collins Sigma+ TSK3646 (also written TSK-3646, TSK3646-45SI, Sigma Plus). What you receive is genuine Kao Collins Sigma+ ink, not a remanufactured or substitute cartridge.
• Printer Compatibility: HP 45 / HP 45si / TIJ 2.5 platform printers, including Wolke m600 and m610, Videojet 8510 and 8520, Domino G-Series and Gx-Series, and other HP45-format case coders and addressing systems.
• Videojet 8520 / Wolke m610 users: These printers authenticate Videojet smart cartridges. A Kao Collins cartridge prints normally but shows a Non-Authenticated Cartridge warning (E5344), ink level is not tracked, and firing voltage and pulse width must be entered under Tools > Setup > Consumables after each power cycle. We supply the Kao Collins settings with every order. Test one cartridge on your firmware before ordering in volume.
• Replacing an OEM solvent cartridge? Ink4Mail recommends Sigma+ for customers replacing solvent TIJ 2.5 cartridges such as the Videojet / Wolke Global Solvent (WLK660082A), Flex Solvent (WLK660081A) or Non Porous Black (WLK660072A) on film and foil. Confirm on your substrate before committing to volume.
• Sigma+ vs. Sigma vs. Stratus: Choose Sigma+ for adhesion and dry speed on film. Choose Sigma (TSK3182) when the line idles between prints and the 64-hour decap and 24-month shelf life matter most. Choose Stratus (TSK281503) for continuous runs on plastic wrap, PVC, Tyvek and UV coats.

Printing on metallized or treated film? Adhesion depends on the film surface treatment. Contact our team at info@ink4mail.com to confirm the right ink for your exact substrate.

Why Shop at Ink4Mail?

• Specialty / Drop-Ship Item: Because Sigma+ is a solvent-based ink, it ships as a special-order, drop-ship product directly from the manufacturer, by UPS ground only. It is not available for same-day or air dispatch from our warehouse. Contact us to confirm current lead time before ordering.
• Cartridge Care: Wipe the print head with a dry lint-free cloth, nozzles down, lightly across the long edge. For downtime over one day, remove the cartridge and fit a cartridge clip, then wipe and purge before use.
• Expert Support: Contact our team at info@ink4mail.com or call 1-866-INK-CART (465-2278) for personalized assistance.