Why Winter Changes Garment Prep
Cooler air changes how fabric feels, how pretreatment sits on the garment and how fast a shirt dries before it goes under the printer. In places like Crown Mines, Randburg and Pretoria East, a cold start to the day can leave garments holding a bit more surface moisture, especially if they were packed in from a storeroom or courier bag overnight.
That moisture matters because DTG prints rely on a stable print surface. If the garment is too damp, the fibres can swell slightly, the pretreat can behave unevenly and the print area may show dull patches or blurred detail. The goal is not to make winter complicated, it is to control a few small steps before every run.
- Check garment temperature before pretreating or loading.
- Keep cartons and blank garments off cold floors.
- Allow a short acclimatisation period after delivery.
- Watch for mist, condensation or a damp feel on poly blends.
Start With Dry Storage and a Clean Prep Area
Winter prep begins long before the first print. Garments stored in a cold garage, a metal back room or near an open roller door can pick up moisture from night air and feel cool to the touch. That is common in Johannesburg and coastal routes too, especially when a courier bag moves from one climate to another. Give stock time to settle inside the work area before you start a shift.
Keep your prep table clear, wipe down platens and make sure the room is free from lint, spray overspray and dust. If your shop has load-shedding interruptions, avoid leaving unfinished garments lying on open tables for long periods because they can pick up dust and small fibres. It is a small thing, but it saves rework.
- Move new stock indoors at least 30 to 60 minutes before printing.
- Store blanks in sealed cartons or covered crates.
- Keep the floor dry and clear near the press and printer.
- Use clean, dry hands when handling pretreat areas.
Check Fabric Moisture Before Pretreating
Winter humidity issues are often really fabric moisture issues. Even when the air feels dry, garments can hold moisture from storage, washing, ironing or the courier trip. A cotton tee may look fine, but if it feels cool and slightly heavy, the print area may need extra drying time before the pretreat pass. This is even more important on darker garments where pretreat consistency affects the final image.
Test a few garments at the start of each batch. Press one blank briefly, then feel the fibres again. If you still feel coolness or a faint dampness, extend the dry time. On blended fabrics, check for uneven surface behaviour near seams, neck ribbing and side panels. Those areas can dry differently and create patchy print results if you rush the workflow.
- Use a quick touch test on each new batch of blanks.
- Inspect collar, sleeve and hem areas for trapped moisture.
- Allow extra drying on thick or brushed fabrics.
- Keep pretreat containers closed when not in use.
Adjust Pretreat and Drying Times for Winter
In cooler conditions, pretreat can sit on the garment longer before it fully levels out. That may sound minor, but it changes how evenly the print sits on the fibres. The safest approach is to work with small adjustments rather than changing the whole process at once. If the shop is slower in the morning, use that time for test prints and sample checks before the main run starts.
If garments are drying too slowly, check platen heat, room temperature and airflow around the curing area. A cold workshop with poor ventilation can hold moisture in the air and slow everything down. On the other hand, if the room is too warm, garments may dry unevenly and leave a harder hand feel. The sweet spot is a consistent process that stays the same from batch to batch, even when the weather changes.
- Run a sample on the first few garments of the day.
- Check for shine marks, pooling or wet patches after pretreat.
- Adjust drying time in small steps, not big jumps.
- Record winter settings for future batches.
Keep Platens, Hoops and Jigs Aligned
Winter can expose small setup faults that go unnoticed in summer. A platen that sits slightly loose, a hoop that is not square or a garment that slips a little under pressure will show up more clearly when fabrics are stiff from the cold. If your shop prints name drops, promo tees or high-volume event orders, those small shifts can cause wasted stock and unhappy customers.
Before a run, check that the platen is seated properly and that the garment lies flat without stretch marks. For smaller runs, inspect the placement by sight and touch before the first print. If you work with mixed garment sizes, keep a simple winter reconfiguration checklist so the team knows which platen, hoop or guide belongs on which job. A few extra seconds here can save a full reprint later.
- Confirm platen fit before the first job of the day.
- Check seam placement and centre marks on every size change.
- Keep guides, hoops and tools in the same labelled place.
- Review set-up after any power cut or moved workstation.
Daily Winter Checklist for Print Shops
Use a short daily checklist to keep winter production steady. It helps the team spot problems early and keeps the morning shift from making avoidable mistakes. If you operate across Crown Mines, Sandton, Midrand or the East Rand, courier stock and local storage conditions can vary a lot, so a routine matters even more.
Here is a practical starting point for winter mornings:
- Open the store room and prep area, then check for dampness or condensation.
- Bring blanks into the work area and let them settle.
- Test one garment for temperature and surface feel.
- Confirm platen fit and alignment.
- Run a small sample before full production.
- Watch the first 10 garments for dry time, colour and detail.
- Note any changes caused by weather, load-shedding or courier delays.
If the same issue repeats for more than one batch, it is usually worth reviewing workflow, storage or setup rather than pushing through and hoping for the best. Small corrections in winter keep the whole shop more predictable.
