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Messy or Unreliable Application
Stringing, Charring, Buildup or Inconsistent Adhesive Application
A difficult adhesive application can affect uptime, product quality, housekeeping, safety, and cost.
Stringing, nozzle buildup, char, dripping, smoking, clogged nozzles, inconsistent patterns, and excessive adhesive around equipment are more than housekeeping problems. They can be symptoms of an adhesive, equipment, temperature, maintenance, or process issue.
They can also lead to rejected products, unnecessary adhesive consumption, frequent maintenance, unplanned downtime, and inconsistent finished bonds.
The Problem May Not Be the Adhesive Alone
Common application problems include:
Stringing or "angel hair"
Char in tanks, hoses, filters, or nozzles
Clogged or partially blocked nozzles
Dripping or drooling
Smoking or excessive odor
Adhesive buildup on equipment
Inconsistent bead, dot, or spray patterns
Poor adhesive cutoff
Frequent nozzle or filter replacement
Adhesive applied outside the intended bond area
Excessive cleanup and housekeeping
Variation in the amount of adhesive being applied
The cause may involve adhesive selection, operating temperature, tank condition, filtration, hoses, pressure, nozzle selection, pattern control, equipment settings, maintenance practices, or the interaction between several of these factors.
Because HAR supports both adhesives and adhesive application equipment, we can evaluate more than the material coming out of the nozzle. We look at how the adhesive and equipment are working together.
Sometimes the answer is a different adhesive. Sometimes an equipment adjustment, maintenance change, replacement component, or application improvement can solve the problem without changing the adhesive.
Tired of cleaning around an adhesive problem instead of solving it?
Why Manufacturers Contact HAR About Messy or Unreliable Application
Hot melt is stringing or creating angel hair around the production line.
Adhesive is charring in the tank, hoses, filters, or applicator heads.
Nozzles are clogging, dripping, drooling, or requiring frequent replacement.
Bead, dot, or spray patterns are inconsistent from product to product.
Adhesive buildup is creating excessive cleanup or maintenance.
The application system is using more adhesive than expected.
Poor cutoff or inaccurate placement is affecting product appearance or bond quality.
Equipment problems are causing downtime, rejected products, or inconsistent production.
The manufacturer is unsure whether the problem is the adhesive, the equipment, operating temperature, maintenance practices, or a combination of factors.
The company wants one resource that can evaluate both the adhesive and the application system.
