Optical Films

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MACtac offers a range of self adhesive optical films widely used in various steps of optical lens production, such as
 Lens grinding
 Lens polishing and smoothing
 Lens edging (edging pads)

Lens Grinding :  
This step gives the lens its corrective effect by "carving" the concave side with a diamond head. The lens is either "organic" (plastic) 75 % of the total market, or "mineral" (glass) 25 % of the market.

The single sided tapes of the Optical Film Range OF 2428, OF 2429, OF 2430, OF 2475  have been especially designed for the fastening and protection of lenses during the forming stages;

Lens Polishing and Smoothing :
The lens is mounted onto a holding device thanks to a lens saver tape which is applied manually onto the convex side of the lens. It is classically a blue tape which is self-adhesive on the lens side and heat activated on the holding device side.
MACtac MACbond B 1167 is the ideal product for this operation

Lens Edging :
After grinding and polishing / smoothing, the lens is "deblocked" from the alloy part by being simply knocked off, or by being immersed into hot water (the alloy melts). Then the tape is peeled off manually from the lens.

For this application, MACtac has developed a double sided foam MACmount ML2780.

Reference	Short description	Adhesive	Liner	Thickness	Adhesive thickness	Carrier	Technical Data sheet
OF 2428	heat sensitive film coated with a blue acrylic adhesive. Used to secure the lens during the grinding process	SBPA	siliconized paper white	100 µ	134 µ
OF 2429	heat sensitive film coated with a blue acrylic adhesive, especially designed for the fastening and protection of lenses during the manufacturing process.	SBPA	siliconized paper white	100 µ	134 µ
OF 2430	heat sensitive film coated with a blue acrylic adhesive. Used to secure the lens during the grinding process	SBPA	siliconized paper white	100 µ	134 µ
OF 2475	heat sensitive film coated with a blue acrylic adhesive. Used to secure the lens during the grinding process	SBPA	siliconized paper white	75 µ	109 µ
B 1167	thin polyester carrier coated with two different rubber based adhesives used in the optical industry	rubber	siliconized paper white	12 µ	100 µ	Polyester
ML 2780	black, cross-linked, closed-cell, polyethylene foam coated on both sides with an acrylic adhesive	SBPA	blue polyethylene film	0.8 mm	900 µ