Bonding and Sealing Equipment
Bonding and sealing is joining two surfaces via a substance that sticks two surfaces together. Synthetic adhesives include thermoplastic and thermosetting resins (which are often stronger than the substances they join), mixtures of epoxy resin and hardener that set by chemical reaction, and elastomeric (stretching) adhesives for flexible joints.
Bonding is the joining process in which a liquid or semi liquid substance is applied to adjoining work pieces to provide a long lasting bond. This process is highly useful in bonding materials together that cannot be welded. Adhesives used in bonding exist in many forms and can be made from various natural and/or artificial compounds.
Sealing is also the process of joining a liquid or semi liquid substance by applying material to adjoining work pieces to provide a long lasting bond. The added benefit of sealing versus bonding is sealing’s prohibiting of contaminants from entering. From water to dust, sealing is one of the most efficient means to ensure a product does not become contaminated.
Fluid Research® Corporation has extensive experience engineering bonding and sealing equipment to bond or seal two substrates together. Fluid Research employs progressing cavity pumps with our Stat-A-Seal® dispense head to provide the most accurate and repeatable dispense anywhere.
Request a quote for bonding and sealing equipment. We excel at developing precision dispensing solutions for any industry. Let us help you with custom dispensing equipment today!
Bonding and Sealing Adhesives
A wide variety of type of adhesives has evolved for both bonding and sealing applications. Definitions and common uses are listed below. The below information gathered from The Free Dictionary.Solution adhesives are resins dissolved in a volatile organic solvent, used for bonding porous materials. They include natural and synthetic rubbers, nitrocellulose, polyvinyl acetate, and polymethyl methacrylate.
Emulsion adhesives are resins dispersed in an aqueous base, used for bonding porous materials. Natural and synthetic rubbers, polyvinyl acetate, and polymethyl methacrylate are used.
Contact adhesives are emulsions or solutions formulated to bond impervious materials. Both faces are covered with adhesive and allowed to dry before being brought into contact. They are used for bonding plastics, sticking rubber shoe soles, and self-seal envelopes.
Pressure-sensitive adhesives are used on tapes or sheet material, sometimes with a nonstick backing paper. Applied pressure forms a bond. Some adhesives are formulated for ease and cleanliness of removal (permanently tacky adhesive), and some to give a permanent bond. The materials used include modified natural and synthetic rubbers and polyisobutylene.
Thermoplastic adhesives are solventless adhesives, softened by the application of heat before bonding. They may be remelted after bonding and are used for high-speed packaging, labelling, and unsewn bookbinding. Polyamides, polyvinyl acetate, and its copolymers are used.
Thermosetting adhesives are solventless, and are cured by heat to form a bond that, once cured, cannot be resoftened by heat. They are used for exterior plywood and for bonding brake linings to shoes. They are made from phenolic and epoxy groups of resins.
Two-part or chemical-cure adhesives consist of resin and hardener, which are mixed together shortly before use and set by chemical action without the necessity for the application of heat. They are used for bonding aluminium alloys in the aircraft industry and varied domestic applications. Resins used include epoxypolyamide and resorcinol.
Structural adhesives are adhesives of high strength, toughness, and creep resistance, used for bonding load-bearing members. They are mainly confined to chemical-cure and thermosetting adhesives.