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Heat seal connectors are used to join LCDs to PCBs in many consumer electronics, as well as in medical and telecommunication devices.. Heat sealing of products with thermal adhesives is used to hold clear display screens onto consumer electronic products and for other sealed thermo-plastic assemblies or devices where heat staking or ultrasonic welding are not an option due to part design ...
Coatings used to create a new bathtub finish can be epoxies, urethanes, hybrid polyester-polyurethane, or polymers.Generally, a catalyzed two-component cross-link synthetic white coating is applied, but this coating lacks the durability or abrasive tolerance of the original glass enamel coating of a factory-new bathtub.
Hot-melt adhesives are as numerous as they are versatile. In general, hot melts are applied by extruding, rolling or spraying, and the high melt viscosity makes them ideal for porous and permeable substrates. [43] HMA are capable of bonding an array of different substrates including: rubbers, ceramics, metals, plastics, glass and wood. [40]
Twin tub washing machines have two tubs, one larger than the other. The smaller tub in reality is a spinning drum for centrifugal drying while the larger tub only has an agitator in its bottom. Some machines could pump used wash water into a separate tub for temporary storage and to later pump it back for re-use.
Concrete sealers are applied to concrete to protect it from surface damage, corrosion, and staining.They either block the pores in the concrete to reduce absorption of water and salts or form an impermeable layer which prevents such materials from passing.
Sealed letters and means of application. Sealing wax is available in the form of sticks, sometimes with a wick, or as granules.The stick is melted at one end (but not ignited or blackened), or the granules heated in a spoon, normally using a flame, and then placed where required, usually on the flap of an envelope.