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Time: 2026-08-14
High humidity above 70% RH accelerates corrosion, lubricant breakdown, and electrical failure on facial tissue machines, especially in South American markets such as Brazil and Colombia. Xinyun Machinery has supplied tissue lines to humid regions across South America and Africa, and the maintenance gaps that shorten equipment life are consistent. This guide gives operators a structured plan to protect the machine and extend its working years.
Ambient relative humidity above 70% RH creates condensation on metal surfaces and inside electrical enclosures overnight. In coastal Brazil and lowland Colombia, daily RH routinely reaches 80% to 90% during the rainy season. That moisture film starts oxidation on unprotected steel within 24 to 48 hours of exposure.
The damage is not only cosmetic. Condensation inside control cabinets causes intermittent faults in sensors and variable-frequency drives. Xinyun recommends sealing and dehumidifying every electrical enclosure on tissue lines installed in these climates. Treating humidity as a maintenance variable, not just a weather condition, is the first step to a longer machine life.
Bare steel surfaces on the machine frame and idle rolls corrode fastest where ventilation is poor. A monthly inspection of welds, base frames, and the embossing roll journals catches early rust before it spreads. Apply a thin anti-corrosion coating to exposed machined surfaces during every planned shutdown.
Use stainless or chrome-plated rolls in the wet-zone sections where the parent roll and web are exposed. For existing carbon-steel frames, a two-part epoxy coating holds up better than paint under 80% to 90% RH. Xinyun supplies tropical-specification lines for South America with upgraded roll plating on request.
Standard lubrication intervals assume a dry workshop, so humid plants must shorten them. Grease points on the folder and drive chains should be serviced every 500 operating hours instead of the dry-climate 1,000-hour cycle. Moisture washes lubricant from bearings and promotes pitting that leads to seizure.
Switch to a lithium-complex or synthetic grease with water-washout resistance rated above DIN 51 807 category 1. Check the embossing roll bearings for heat every 250 hours, because failed lubrication there stops the line. Keep a lubrication log so no point is missed during shift changes on multi-crew operations.
Electrical faults are the leading cause of unplanned downtime in humid tissue plants. Install cabinet dehumidifiers or desiccant breathers that hold the internal RH below 45% RH. Every control enclosure should carry an IP54 rating or higher, and the plant should avoid placing cabinets against exterior walls where condensation forms.
Route cable glands with drip loops so water cannot track into terminals. Xinyun commissions South American lines with tropicalized drives and sealed terminal boxes, but the buyer must maintain the dehumidifier cartridges on schedule. A failed breather lets 80% to 90% ambient RH reach the electronics within a single rainy week.
Facial tissue base paper absorbs moisture from the air and loses tensile strength when stored above 60% RH. Keep the parent roll warehouse below 60% RH and above 18°C to prevent both dampness and brittleness. A 5% rise in parent roll moisture can reduce runnability on the folder and increase web breaks.
Finished napkin and facial tissue cartons should leave the packing area within 24 hours to avoid reabsorption. Use pallet stretch wrap and desiccant packets for shipments through humid ports such as Santos or Barranquilla. Xinyun advises buyers in Colombia and Brazil to budget for dehumidified storage as part of the production line, not an afterthought.
A fixed checklist turns humid-climate maintenance from guesswork into routine. Inspect frame coating and roll journals monthly, service grease points every 500 hours, and test cabinet dehumidifiers every quarter. Replace desiccant cartridges before they saturate, and record the internal RH of each enclosure on the log.
Quarterly, pull and inspect the embossing roll bearings and the folder drive chain for corrosion or wear. Verify that the warehouse RH stays below 60% RH and the cabinet RH below 45% RH using calibrated hygrometers. Xinyun Machinery shares this checklist format during commissioning for every South American and African line.
Humid climates increase the consumption of wear items such as seals, breathers, and grease, so stock them locally. Keep a 6-month supply of cabinet desiccant cartridges and an extra set of roll bearings on site. Local stock prevents a single rainy-season failure from stopping production for weeks.
Contact the equipment supplier before the rainy season to review the maintenance plan and confirm spare part availability. Xinyun Machinery maintains export records and spare part kits for lines delivered to Brazil, Colombia, and other South American markets. Buyers should schedule a remote or on-site inspection ahead of peak humidity months.
Extending facial tissue machine life in humid South American climates requires holding the electrical enclosure RH below 45% RH, the warehouse RH below 60% RH, and shortening lubrication to every 500 operating hours. Rust prevention, sealed tropicalized cabinets, and dehumidified parent roll storage address the three failure modes that humidity triggers. Xinyun Machinery has supplied and supported tissue lines across South America and Africa and provides the commissioning data, spare parts, and inspection checklist to keep the equipment running through rainy seasons.
Contact Xinyun Machinery for a customized quote and maintenance plan tailored to your humid-climate plant. Get machine price, tropical-specification options, and spare part support for your facial tissue line by reaching our engineering team directly.
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