Regular, effective stencil cleaning is fundamental to maximising pre-placement yield. But modern fine-pitch assemblies and other advanced screen printing applications require cleaning performance beyond the capabilities of conventional, paper-based cleaning materials.

High performance cleaning rolls are available from DEK, featuring advanced Sontara® CleanMaster fabric to enhance cleaning using the printer's on-board, roll-feed USC mechanism. International chemical specialist DuPont has specifically developed Sontara® CleanMaster for SMT production. It features an advanced structure for outstanding strength and absorbency, with reduced lint. The result is a significant gain in stencil cleaning efficiency. More effective removal of printing residues is assured, as Sontara CleanMaster is extremely absorbent. Even small quantities of paste, adhesive or solvents are removed from the stencil underside, preventing bridging in fine-pitch assemblies and allowing downstream processes to be completed at full efficiency. Simply replacing the conventional USC rolls with Sontara CleanMaster drives up end of line yield and build quality.

Lint or other particles left behind by ordinary cleaning rolls can block stencil apertures and prevent gasketing between the stencil and board. The structure of Sontara® CleanMaster prevents linting, aiding paste volume consistency and eliminating bridging or smearing that can result from poor gasketing.

Sontara® CleanMaster is highly resistant to tearing, even when wet. This promotes continuous machine operation by raising MTBF; avoidable machine downtime and operator intervention is thus reduced. This translates into enhanced throughput, greater line utilisation and improved production scheduling.

Sontara® CleanMaster rolls are compatible with all DEK screen-printing platforms and available in a range of standard widths, directly from DEK.

	High Performance USC medium
	Developed by DuPont for SMT applications
	Enhanced cleaning raises yield and throughput
	High tear resistance raises MTBF and reduces operator intervention
	Fine-pitch SMT manufacture and advanced screen printing applications
	Standard widths available
	Compatible with all DEK screen printers

Fabric Technical data*

Property		Value	Unit	Test Method
Composition	Polyester	46	%
	Woodpulp	54	%
Basic Weight		51	g/m2	ASTM D3776
Thickness		0.28	mm	ASTM D1777
Intrinsic water absorption		4.56	ml/g	IES-RP-CC-084.2
Extrinsic water absorption		244	ml/m2
Intrinsic absorption rate		34	ml/g/s
Extrinsic absorption rate		1807	m1/m2/s
Grab tensile	MD	133	N	ASTM D5034
Breaking strength (dry)	XD	67	N
Grab tensile	MD	112	N
Breaking Strength (wet)	XD	57	N

* Manufacturers supplied data. Sontara® is a Dupont registered trademark

Part Number	Description
115660	CleanMaster, USC Fabric, W-515mm, Use with any DEK Cleaner
115662	CleanMaster, USC Fabric, W-400mm, Use with any DEK Cleaner
115664	CleanMaster, USC Fabric, W-300mm, Use with any DEK Cleaner