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Introduction: Laser Protection Masking

Laser engraving is the practice of using lasers to engrave or mark an object. The technique does not involve tool bits which contact the engraving surface and wear out. This is considered an advantage over alternative engraving technologies where bit heads have to be replaced regularly.
Temporary protective Peelable masks are used to protect parts from Laser during engraving and in laser processing filed. Parts are brushed or sprayed on with Laser_protect. When dried , the resilient, air-tight, strippable coating protects the parts until they are lased. Laser Protection mask will protect the top surface of the substrate to prevent smoke damage or scorching from the engraving or cutting process.

We have tested it on wood, plastic, acrylic, stone and other materials with excellent results. The 5900 vaporizes completely when lased and creates a mask that can be easily removed.

It is applicable for variety of laser processes including color filling, light sandblasting and deep engraving.

It does not contain PVC (Poly Vinyl Chloride).

The byproducts of combustion of Laser Protect Mask 5900 are carbon dioxide and carbon monoxide (CO and CO2).

Protected parts are immediately ready for use when the peelable coating is removed. Does not alter most material properties. does not alter important surface properties. Our technology protects any size products, components during process, or stored parts in a small box, to large containerized shipments.

  • Multifunctional Mask. More effective protection.
  • Efficient delivery systems that make it economical to treat hard-to-protect items.
  • Easy application. Improved health, safety, and pollution control.
  • Elimination of extra processing steps in most cases

Application

  • Spray or brush on to the substrate.
  • Laser Mask 5900 is thick gel type coating. initially it will not look smooth.
  • After a few minutes Laser MASK will flow smooth and consistent.
  • Drying time is 20-30 minutes.
  • After complete drying, engrave and cut the substrate. Peel the Laser_ProtectMask off to reveal the clean substrate. Non hazardous and laser safe.

Standard air assisted, or airless spray equipment, Brush or Roller (Use lambs wool roller).
Using standard good atomizing spray equipment (eg. DeVilbiss MBC gun, FF nozzle and No 765 air cap) with pressure feed, a 100 micron (0.004″) film can be applied to a vertical surface in one coat. Atomization pressure of 5ATM (75lbs/sq in) and sufficient pot pressure (0.3 ATM – 5lbs/sq in) to obtain proper fluid delivery is recommended. Airless spray can also be used such as Graco No 205-904 with a 163-168 insert and a 28:1 ratio pump. Use water only for cleaning spray equipment. Drying can be accelerated by circulation of warm air or infra red lamps.

Special Instructions:
When spraying over freshly lacquered or re-enameled surfaces, allow 24 for lacquer to dry and allow full enamel cure before applying peelable coatings. Be sure to apply full film thickness of 100 microns (0.004″). On equipment to be stored for many months exposed to rain, sun and snow, it is recommended that a 200 micron (0.008″) film of Strippable coating be applied in two coats, drying one hour between coats. This is a water based compound and should be protected from freezing. Recommended storage temperature is 10o°C-32o°C.
Try to avoid ‘feather edges’ or areas where it is applied thinly. In order to achieve a defined edge it may help to apply masking tape, roller up to and over the tape and remove tape while Our Peelable coatings Peelable coating is still wet.

Repair:
If the Our Peelable coating film rips or tears, the flap may be lifted and resealed by applying a fresh wet coat to the underside and resealing. Alternatively, cut away flap and re-apply fresh coating, it will bond to itself.

External Weather Resistance:
Long-term exposure to sunlight will cause premature deterioration and brittleness of the film. Exposure to water after the film is dried will soften the film but it will recover once it dries. Avoid traffic over the wet or while the film is wet. If components are to be stored externally for several weeks we recommend the application of acrylic topcoat which will protect for 12 months and more.

Drying Time:
It is critical that Our Peelable coating film is allowed to cure dry. Drying time will vary according to humidity, temperature and weather condition. The evaporation of water will be speeded by air movement and warmth supplied by natural and mechanical means.

Adhesion:
Our Peelable coatings is a temporary protective Peelable coating and adhesion is low.

Process:
Our Peelable coatings once completely dry are resistant to water and solvent and acts as a mask against sprayed emulsion paints, lacquers, oil or grease and water.

Removal:
The dry Our Peelable coatings strippable coating film can be easily removed either by hand stripping or other means. Our Peelable coatings are thermoplastic. Do not try to remove in freezing conditions. Our Peelable coatings becomes brittle in freezing condition.

Clean Up:
Our Peelable coating is a water-based product and you can clean spray equipment and brushes with water. Do this immediately before peelalbe coating starts to dry.

Coverage

One gallon covers 16,000 square inches. One liter will cover approximately 4 square meters at a dry film thickness of 100 microns. You can also use following chart to calculate in mil thickness and gallon coverage.Approximate Square Feet Coverage Per Gallon of General Chemical’s Peelable coatings:

General Chemical has a complete line of Peelable Masks to meet your challenging requirement. If we do not have something to meet your specific requirement, than we will develop it by working with you to meet that need for strippable coating.