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Henkel has introduced a range of LOCTITE adhesive dispensing systems based on the principle of volume change — a process designed to ensure consistent dosing.

Commonly, LOCTITE volumetric dispensing systems are used in automatic workstations and transfer lines and in robotised assembly for the precise dispensing of adhesive dots and beads onto mating surfaces or flanges.

This is particularly important to those in electronics and medical device assembly who also often require the integration of light cure equipment in the process.

Henkel can supply both the adhesive and the volumetric dispensing system. Consistent, high-quality bonding and sealing is ensured, with high repetition accuracy even in variable environment conditions.

Key features and benefits

  • At the heart of the LOCTITE design is an eccentric rotor pump, the main components of which are a stainless steel rotor that rotates within a self-sealing elastomeric stator. As it dispenses the adhesive volumetrically and virtually free from pulsation, it gives far greater control of the amount of adhesive released.
  • The volume flow depends on the size of the pump and the number of revolutions; direction of flow is reversible to eliminate the possibility of post-dispense dripping. As flow is directly proportional to the speed of rotation, the system allows for the continuous, variable adjustment of the dispensing rate via motor speed adjustment.
  • The standard, single pump — the Henkel volumetric rotor dispenser — is designed for flowable, single-component LOCTITE anaerobic adhesives, sealants and light-curing acrylics. A maintenance-free, brushless DC motor is used to drive the system and an integrated pressure regulator is provided for connection to an optional reservoir.
  • The system comes complete with a dedicated controller whose menu navigation and graphic LCD display makes it easy for users to select either the amount of product dispensed, in millilitres, or the dispense rate in ml/min. 
  • The LOCTITE dual-rotor pump dispenser is based on the same operating principle but is mainly designed to handle two-part epoxy resins. It is suitable for processing low- and high-viscosity materials within the ratio of 1:1 to 10:1 and typically specified for dispensing continuous beads or for time-controlled potting applications in manual workstations.
  • Two separate servo drives allow continuous adjustment of the ratio mix and the system can also process some abrasive products. As the pumps are built directly into the follower plates with wipers, they can also be used for feeding and dispensing non-levelling, thixotropic products. 
  • Both volumetric dispensing systems are in the standard LOCTITE range but, in common with all dispensing and automation equipment, they can be tailored to the precise needs of the application. Additional choices in the range include the LOCTITE benchtop peristaltic dispenser for volumetric dispensing from a bottle and the new jet valve for non-contact dispensing.

Henkel is the world market leader in state-of-the-art industrial adhesives, sealants and surface treatment products for a wide variety of engineering applications. Its leading brands for the industrial market are Loctite, Bonderite, Teroson, Aquence and Technomelt.

Strong customer focus, research and innovation, consistent quality and sustainable business practices have contributed to its record of success, as has continuous improvement in both its products and methods of manufacture.

The company applies its expertise to the entire value chain across the engineering sector. Whatever you build, manufacture, assemble or repair, its technical consultancy service will provide all the assistance and training you need to ensure you have the best product and the skill to apply to its best advantage.

Henkel brands are internationally renowned for their proven reliability and performance and the scope of the company’s product programme extends from cleaning and pre-treatment through to bonding, sealing, filling and protecting, coating and lubricating. 

Henkel is the only adhesive manufacturer to offer a comprehensive range of products that are hazard-label free. Its Loctite Health and Safety series is suitable for the lion’s share of engineering applications and includes thread lockers, thread sealants, gasketing adhesives, retaining compounds and instant adhesives.

As both the product and its method of application dictate the quality of process, Henkel also has considerable expertise in the supply of dedicated dispensing equipment that, if necessary, can be bespoke to the application. This equipment ensures the product is applied quickly, cleanly, accurately and economically.

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