Specs
Substrate Roll specs
Press setup notes and key briefing figures for Substrate Roll.
How Substrate Roll specs play out over a working print week
Substrate Roll specs sets out the roll and press information needed before supply or troubleshooting starts. Include width, material type, core details, print application, and any tracking or tension issues already seen on press.
Start the brief with roll width, substrate grade, gauge and unwind direction. In South African flexo plants, BOPP, PET, PE and paper stocks each behave differently under tension, especially when inland dust or Durban humidity starts affecting web handling. Note the maximum reel diameter your press and shafting can carry before plate, ink or drying discussions begin.
Record the reel condition while the wrap, labels and edge profile are still untouched. A quick photo set should show the core ends, splice count, damaged edges and any telescoping, because those details often explain tracking faults better than a later report from press. Add the PO or job code to the sheet kept with the roll paperwork.
Roll details needed at intake
Across one substrate roll brief, record the web width, unwind direction, core inside diameter, outer diameter and the press it must fit. Add substrate grade, gauge or micron, treatment level where known, and the end use such as wrap, pouch, liner or label stock. Those figures help the press crew match shafts, brakes, tension range and splice planning before stock reaches the machine.
Link Substrate Roll specs to the relevant web path, ink system and plate build before any stock is booked out. Check the job sheet against core dimension, corona level if known, winding direction and storage condition, then send it through the contact form with the reel label details. If there is a recurring wrinkle, wander or tension drop, state where on press it appears.
- Roll width, core and OD captured
- Edge damage and splices clearly logged
- Reel photos attached with job reference
Press conditions that affect reels
Johannesburg and Pretoria plants often battle dry dust that builds up on guides, sensors and idlers, while Durban sites may see more moisture-related curl or tighter reels after storage near the coast. Older presses in Elandsfontein, Pinetown or Montague Gardens can also have narrower tension control windows, so include any known machine limits when listing the substrate roll. Separate export work, food packs and general industrial packaging if the handling rules differ.
Load-shedding interruptions can leave a web standing under uneven tension, which is worth noting if the same reel later shows baggy lanes or edge weave. Reels moved by courier between Cape Town, Durban and Gauteng should also be checked for transit knocks, crushed cores and loose wrap before mounting. Those simple observations often narrow the cause faster than a full press strip-down.
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Substrate Roll spec sheet points
Send the Substrate Roll brief with floor photos, lead times, and the issues already seen on press. Use a subject line that names the substrate roll job or press issue.
Record the Substrate Roll specs against the job number so width, core size, material grade, and unwind direction stay linked to the correct print run. Keep the original roll brief with the press notes and buyer paperwork when traceability, stock verification, or a repeat order needs it.
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