Glass radiation curing adhesives

Radiation-curing adhesives for crystal clear plastics such as acrylic glass/ Plexiglas, polystyrene, polycarbonate. 

For bonded joints with crystal clear plastics like polystyrene and acrylic glass to metals, it is also possible to apply radiation-curing adhesives (Sections 4.3.2 and 9.3.3). 

Absorption of radiation, for example, UV rays through glass, plastics (e.g., Plexiglas) that results in a delay in curing of radiation-curing adhesives. 

Photomer . [Harcros UK] Acrylic derivs. radiation-curing resins for inks, varnishes, glass lamination, oriented polypropylene film lamination, coatings fw plastics, blister pack adhesives. 

Uses Crosslinking agent in casting compds., glass fiber-reinforced plastics, adhesives, coatings, ion-exchange resins, textile prods., plasti-sols, dental polymers, rubber compding. reactive diluent for radiation-cured inks, lacquers crosslinked acrylic resin comonomer Trade Names SR 239... 

Keywords Acrylates Crosslinking Dual cure Epoxides Glass laminates Interpenetrating polymer networks Isocyanates Photo initiated cationic polymerisation Photoinitiators Photopolymerisation Pressure sensitive adhesives Release coatings Structural adhesives Thiol/polyene UV radiation curing Vinyl ethers. 

Pressure sensitive tapes and labels are offered with a variety of backing materials such as crepe paper, aluminum foil, fabric, cellophane, kraft paper, cellulose acetate, polyester film, polyethylene, polypropylene, plasticized poly (vinyl chloride), woven glass fiber cloth, or other flexible materials. Pressure sensitive adhesives may be applied from solvent, latex, hot melt, or radiation cured 100% solids systems. A wide variety of coating methods are utilized such as roll coating, calendering, slot die, and transfer coating. 

Reactive other Urethane acrylates (radiation cure) Solvent-free Wood coatings, adhesives for GRP (glass reinforced plastics)... 

Nearly 42% of the demand for all adhesives comes from the packaging sector. Radiation-curable adhesives are used primarily for packaging, with paper and paperboard the dominant materials used in the packaging. Radiation-curable adhesives can be used on glass, metal and some plastic materials. Other applications for radiation-curable adhesives are in healthcare, electronics, communications, pressure-sensitive tape and consumer applications. Ultraviolet (UV)-curable adhesives are best suited to small-scale applications, while electron beam (EB)-curable adhesives are more appropriate in high-volume applications (an EB system has a higher installation cost). One additional characteristic of EB-curable adhesives is that they can cure the area between two substrates. UV light-cured adhesives can also be applied on heat-sensitive substrates and are not affected by ambient temperature or humidity. 

The increased use of ultraviolet radiation to cure adhesives in assemblies containing UV transparent materials such as glass or plastic also seems assured. These adhesives rapidly develop high bond strength, and consume very little energy. 

The adhesive was developed for application to seal food containers with alumina foils and to seal glass plates. In this case, the vinyl polymerization step can be carried out by UV light radiation through the already mounted glass plates with a photoactive radical initiator to cure the viscous adhesive material. Another application of this material is the development of diffusion barrier containing protective coatings on medieval stained glasses (31). 

Uses Curing agent for radiation and peroxide cure systems incl. acrylics, adhesives (pressure sensitive, structural), coatings (glass, metal, optical, paper, PVC floor, release, textile, wood), concrete polymers, flooring, electronics (conformal, photoresists, solder masks), inks (flexo, gravure, litho, screen), paints, photopolymers Trade Names SR 454 SR 454HP... 

As a result of these reactions the materials eventually crosslink and become set] that is, they lose the ability to flow or to be dissolved. Cure most often is thermally activated hence the term thermoset, but network-forming materials whose cure is light- or radiation-activated are also considered to be thermosets (see Section 2.11, on differential photocalorimetry). Some thermosetting materials, such as certain adhesives, crosslink by a dual-cure mechanism, that is, by either heat or light activation. In contrast to the values for crosslinked elastomers or rubbers, the glass transition temperature of thermosets is generally above room temperature. 

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