Calendered Latex Sheet
Executive summary
Calendered sheet is already a film. You buy roll goods. Thickness is talked about as an ISO 3302-1 tolerance class and as a vendor millimetre menu.
Use this when you are reading a supplier chart or choosing a gauge to cut. The pathway primer is Buying formed latex sheet.
What calendered sheet is
What does calendered mean?
Calendered sheet is rubber pressed between heated rollers at the factory. The rollers set thickness and smooth the faces. You cut and glue what arrived. You did not form it.
ISO 3302-1 includes calendered rubber sheet in its dimensional-tolerance scope. It is a tolerance framework for solid rubber, not coated fabric, and not a garment construction chapter.
Vendor tables that interpret ST classes for thin sheet are guidance. One published reading: 0–1 mm at ST1 as ±0.15 mm. That is labeled-versus-measured gauge language from a vendor, not the ISO text itself.
Catalog menus
Manufacturer category pages describe calendered natural-rubber sheeting from about 300 µm, with smooth or cloth finish and cure-state options.
Retail garment-sheet menus often list about 0.25–1.05 mm, sometimes with a polishable upper face and a roughened underside. Treat those as shopping cues. They are not a mill SOP and they are not an endorsement.
Shop culture after you buy the roll is usually solvent rubber cement. See Sheet adhesives and seam integrity.
Why people buy the mill’s film
You get a usable thickness now. Repeatability is the mill’s sheet.
For fit and stretch after you pick a gauge, see Sheet gauge, modulus, and reduction. For what a buyer can actually inspect, see Sheet garment selection QA.