Short answer: Resigraph is a semi-permanent graphite-resin coating manufactured by CONDAT (France) that is applied to delivery equipment on IS (Individual Section) glass container production lines. It provides a low-friction surface on deflectors, scoops, troughs and ramps to ensure consistent molten glass gob delivery, reduce production defects and extend service intervals to 9-12 months between reapplications.
In glass container manufacturing, the delivery system is everything. The deflectors, scoops, troughs and ramps that guide molten glass gobs from the feeder into blank moulds on an IS machine must provide consistent, repeatable gob delivery — every cycle, every shift, every day. Variable gob speed or trajectory means defects: settle marks, wall thickness variation, misshapen parisons. That is where Resigraph fits.
What is Resigraph?
Resigraph is a two-component graphite-resin coating system manufactured by CONDAT, a French company with over 30 years of experience in glass industry lubricants and coatings. It is a specialist product — not a general-purpose coating — designed specifically for the demands of glass container production.
The two pre-measured components are mixed immediately before application. This pre-measured packaging eliminates dosing errors that occur with manually-mixed coatings, ensuring consistent quality across every application. Once cured, the coating forms a durable graphite-resin film that withstands repeated contact with molten glass gobs.
What problems does Resigraph solve?
Glass manufacturers face several challenges with delivery equipment maintenance:
- Inconsistent gob speed: Without a proper delivery coating, gobs travel at variable speeds. This causes incorrect loading position and timing in the blank mould, leading to defects.
- Frequent reapplication downtime: Traditional oil-based delivery lubrication needs constant re-oiling during production runs. Every interruption costs production throughput.
- Smoke and fumes: Oil-based lubricants generate smoke at operating temperatures, creating poor working conditions and air quality issues on the production floor.
- Inconsistent coating quality: Manually-mixed coatings are prone to dosing errors. Resigraph's pre-measured two-component packaging eliminates this variable.
Service life and reapplication
Resigraph coatings typically last 9-12 months on IS machine delivery equipment, depending on production throughput and operating conditions. AST provides Resigraph coating services on an annual basis, aligned with scheduled production shutdowns or planned maintenance windows.
This is a significant improvement over oil-based lubrication systems that require constant attention during production runs. The extended service interval reduces maintenance downtime, improves production consistency and allows glass manufacturers to plan coating work into their annual maintenance schedule rather than reacting to degradation during production.
Smoke-free operation
Unlike oil-based delivery lubricants, Resigraph does not generate smoke or fumes at operating temperatures. The cured graphite-resin film remains stable during contact with molten glass gobs, improving working conditions and air quality on the production floor. This is increasingly important as glass manufacturers focus on workplace health and safety standards.
Where Resigraph is applied
Resigraph coats the delivery-side equipment on IS (Individual Section) machines — specifically the components that guide molten glass gobs from the feeder into blank moulds:
- Deflectors (inner surfaces)
- Delivery scoops
- Troughs
- Ramps and gob distribution channels
These are not mould-side components — Resigraph serves the delivery system specifically. The moulds, plungers and blow-side equipment use different lubrication systems.
AST's glass manufacturing coating capability
AST (Australia Surface Treatments) provides Resigraph coating services for IS machine delivery equipment across Australia and New Zealand. We service major glass manufacturers including VISY and O-I Glass, supporting both scheduled annual maintenance programs and urgent production-line turnaround work.
Resigraph is one of three coating technology families AST offers — alongside fluoropolymer coatings (Teflon, Halar, Tefzel) and wire arc spray metal coatings (chrome, stainless steel, nickel).