Industry guide
Clean, dust-free cuts for foam, insulation and packaging
Bandknives and contour knives for foam converters, mattress and upholstery manufacturers, insulation processors and packaging producers, with plain guidance on which edge suits which material, welded to your machine's length in the UK.
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Foam converting plant: CNC contour bandknife profiling upholstery foam
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Foam converting is knife work. Whether you split blocks for mattresses, profile cushioning for upholstery, sheet rigid insulation or cut packaging materials to size, the job is the same: clean faces, no dust and as little material lost to the cut as possible. That is why this industry runs on bandknives, thin continuous knife edges with no teeth or only light ones, rather than conventional bandsaw blades.
The Dakin-Flathers Slicer37 family covers the work. Straight edges handle the general run of foam, insulation, leather, textiles and packaging materials. Wavy edges bite into slippery and layered product and scallop edges span mixed grades from low density and memory foam up to rigid foam, insulation and packaging, while narrow CNC contour knives profile shaped parts and toothed bandknives keep the cut moving in denser grades. Everything is welded to your machine's length in the UK.
Recommended blades for this work
5blades from the map of this industry's cutting work, each with the honest reason it earns a place. Every one is welded to your machine's length.
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Dakin-Flathers Slicer37 Bandknife Blade product shot, white background, coiled, from the Dakin-Flathers trade portal or media pack
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sample pricingDakin-Flathers Slicer37
Slicer37 Bandknife Blade
The Slicer37 straight edge is the starting point for foam converting, slicing foam, insulation, leather, packaging materials and textiles with no kerf and no dust.
From £26.50 ex VAT
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Dakin-Flathers Slicer37 CNC Contour Band Knife product shot, white background, coiled, from the Dakin-Flathers trade portal or media pack
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sample pricingDakin-Flathers Slicer37 CNC
CNC Contour Band Knives
These narrow Slicer37 CNC contour knives are sized for tight profile work, shaping soft, rigid and memory foam on CNC contour cutting machines.
From £29.50 ex VAT
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Dakin-Flathers Slicer37 Wavy Band Knife Blade product shot, white background, coiled, from the Dakin-Flathers trade portal or media pack
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sample pricingDakin-Flathers Slicer37
Slicer37 Wavy Band Knife Blade
The wavy edge of the Slicer37 Wavy bites into slippery and layered product that a straight edge can skate over, cutting foam, insulation, wet wipes and textiles dust-free.
From £30.50 ex VAT
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Dakin-Flathers Slicer37 Scallop Bandknife Blade product shot, white background, coiled, from the Dakin-Flathers trade portal or media pack
products/dakin-flathers-slicer37-scallop-bandknife-blade/main
sample pricingDakin-Flathers Slicer37
Slicer37 Scallop Bandknife Blade
The Slicer37 Scallop covers a wide density span, from low density and memory foam to rigid foam, insulation and packaging: one edge form for mixed grade lines.
From £30.50 ex VAT
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Dakin-Flathers Slicer37 Toothed Bandknife product shot, white background, coiled, from the Dakin-Flathers trade portal or media pack
products/dakin-flathers-slicer37-toothed-bandknife/main
sample pricingDakin-Flathers Slicer37
Slicer37 Toothed Bandknives
Slicer37 Toothed Bandknives bite into medium and high density foam, sponge, scourer and packaging materials that a plain knife edge can drag through.
From £28.50 ex VAT
Why bandknives lead in foam converting
Bandknife blades are continuous knife edges rather than saws: thin, flexible bands honed to slice foam, insulation, leather, textiles and packaging materials with a clean face and no dust. That matters in converting, where a toothed blade tears soft cellular material and turns sellable product into dust. A knife edge parts the material instead, so faces come off the machine clean and there is no kerf loss. Straight, wavy, scallop and lightly toothed edges cover the density span from soft PU foam through rebond to rigid board, all on the same knife construction.
Choosing within the family comes down to density and product. A straight edge is the starting point for soft PU and general converting. Wavy and scallop profiles grip slippery facings and span mixed grades, so lines running several densities can standardise on one edge form. Toothed bandknives take the top of the density range: medium and high density foam, sponge, scourer and packaging materials that grip and drag on a plain edge. Whatever the edge, the knife construction is the same, so the cut stays clean, dust-free and kerf-free.
On the saw table
The workpieces this industry actually feeds through a band, and what each asks of the blade.
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Wide shot of a horizontal splitting machine part way through a large pale foam block, fresh sheets stacked flat beside it, clean cut faces towards camera.
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Splitting blocks into sheets
Long blocks of PU foam come in as bulk and leave as sheets. Every pass through the machine is a chance to lose material. A straight bandknife takes no kerf, so sheet thickness is set by the machine, not eaten by the cut. Because nothing between sheets is lost to the blade, yield per block stays as high as the machine allows, which adds up quickly when a single block gives many sheets.
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Close crop of a narrow contour knife mid-cut in white memory foam on a CNC table, curved profile emerging, workshop lighting, no dust visible.
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Contour profiling on CNC machines
Mattress and upholstery work often calls for shaped parts rather than flat sheets: contoured toppers, profiled cushioning and fitted inserts. CNC contour machines cut these shapes from soft, rigid and memory foam using a narrow band knife sized for tight profile work. Because the edge slices rather than saws, the profile comes off the machine with a clean face and no dust to clear from the cell.
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Insulation processing line with rigid board passing a bandknife, cut edge crisp in the foreground, stacked boards behind, cool daylight tones.
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Sheeting rigid insulation cleanly
Rigid insulation board and layered product punish the wrong edge: a straight knife can skate on slippery faces where a sawtooth blade fills the shop with dust. Wavy and scallop edges bite into the surface and carry the cut through denser grades, keeping faces clean and dust down. For the densest product, such as sponge, scourer and heavy packaging materials, a lightly toothed bandknife keeps the feed moving without tearing.
Material guides for this industry
Deeper guidance per workpiece, including the blades that genuinely cut it and why.
Frequently asked questions
Tell the blade wizard your material, machine and length and it will name the blade for the job.
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