Chemopad NS is made from buffed polyurethane with microscopic voids, laminated to a nonwoven substrate. The open-porous structure of the pad provides the possibility of using the material for semiconductor final wafer polishing under high, average, and low pressure, which reduces the need for pad change during the polishing process and thereby increases productivity. The Chemopad NS has a very good chemical resistance and provides excellent surface finish.
Chemopad NS polishing pad
Material
- Buffed polyurethane
Values
- Thickness: 0.90 mm
- Hardness as is: 68° Shore A
- Density: 0.42 g/cm³
- Compressibility: 20%
Available with PSA adhesives EB and HS or OviO magnetic backing.
Product information
Shelf life: 24 months from production date.
Packaging: Our polishing pads are packaged in sealed bags of 10 to ensure that they remain clean during transportation. The bags are packaged in boxes to ensure that the pads remain laying flat in order to prevent creasing of the backing or delamination of the liner before usage.
Backings: Our polishing pads are available with PSA adhesives HS and EB or OviO magnetic backing. For more information about our backings see next tab.
Applications
- Steel
- Stainless steel
- Titanium
- Aluminium
- Precious metals
- Cast Iron
- Copper/brass
- Quartz
- Lithium Tantalate
- Acrylics
- Polycarbonate
- Epoxy
- Silicon
- Silicon Oxide
- Germanium
- Gallium Nitride
- Gallium Arsenide
- Indium Phosphide
- Neodymium Gallate
- Zinc Telluride
- Lithium Niobate
- Zinc Selenide
HS
Our HS adhesive has a special polymer-based adhesive at on the laminating side and an acrylic adhesive on mounting side with a polyester-liner.
The HS provides excellent adhesion to the polishing cloth and excellent dimensional stability. A very strong adhesion to the plate during application, but still easy to remove at the end of the polishing process. A thicker carrier ensures easier mounting of thin cloths.
NGL Polishing Technologies have developed HS as a unique adhesive designed to be used with most known slurries in the polishing process. It is resistant towards water, water-glycol mixtures, alcohol, alcohol-glycol mixtures, oil (petroleum distillates), oil in water emulsions, bleach, etc.
EB
Our EB adhesive comes with a rubber-based high tack and peel adhesive at the laminating side, removable acrylic adhesive on mounting side and a siliconized paper-liner. The benefits of the EB adhesive are perfect adhesion with the polishing cloth and very good adhesion to the plate during application.
EB is a strong adhesive designed for mounting on all polishing cloths requiring an excellent lamination. Furthermore, it is resistant to alcohol and water-based slurries.
OviO
The flexible foil, together with a magnetic plate, eases the removal and alignment of the pad, and reduces down-time significantly. It makes it possible to re-use your polishing cloths until it is worn out, and is without the sharp edges usually found on hard metal-backings.
Applications Intended for use as backing for all our polishing-cloths.