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thermoplastic coatings

The glass thermoplastic solution.


The glass thermoplastic solution.

GLAS-LOK® is the Protech Group’s line of thermoplastic powder coatings developed specifically for the safety coating of glassware and ceramic products. GLAS-LOK® powders sur-round the substrate in a durable plastic coating therefore reducing the risk of glass and ceramics shattering upon impact. When a receptacle or light fixture coated with GLAS-LOK® does break, the contents remain locked within the durable plastic coating. This minimizes risk, reduces cleanup times and allows for proper disposal.

GLAS-LOK® powders are available in transparent colors. They are the ideal coating solution for many applications including florescent light bulbs, reagent bottles and high-end chandeliers.

How does it work?

GLAS-LOK® is formulated as a functionalized polyethylene copolymer that specializes in glass adhesion, to improve mechanical resistance to fragile products. It can be applied by fluidized bed or electrostatic spray.


    • Prevents the dispersion of glass upon impact.
    • No primer or curing required provides major energy savings.
    • No plasticizers or phthalates.
    • Ideal coating solution for a glass and ceramic products.
    • Environmentally friendly.

    Specific GravityASTM D7920.943 g/cm3
    AdhesionASTM D4541>1,527 PSI (10.7MPa)
    HardnessASTM D224050
    Impact ResistanceASTM D2794>384 in./Lbs. (43 Joules)
    Tensile StrengthASTM G6382207 PSI (15.2MPa)
    Elongation (%)ASTM D638305%
    QUVASTM G532,000 hours, no significant change in color or gloss
    Taber AbrasionASTM D406061 mg loss, CS 17 wheel
    Flexibility (Conical Mandrel Bend)ASTM D5221/8 in (3.2mm), no cracks (>32%)
    Melt IndexASTM D123832


    Commercial & Industrial

    Consumer Goods & Appliances

    • Lighting
    • Packaging
    • Medical Supplies
    • Glassware
    • Glass Decorations