FAQ: Adhesive Pot Life and Syringe Size

by on May 13, 2016

pmf-adhesive-syringes-appli-tecWe frequently hear, “What size syringe should we use for our adhesive application?”

Of course, you already know the answer: “It depends.”

Choosing the correct syringe size depends on two factors: the material pot life and the amount of material needed.

A material with a 12-hour pot life gives you more options than a material with < 1 hour of pot life.

Knowing the amount of material needed is important because of waste: you don’t want 5cc of material if you can only apply 1cc within 30 minutes of pot life.

How you’ll apply the material is also important – e.g. robotically versus manually. If using a robotic application, you’ll need to determine material needed per application plus the number of applications per minute.

Math for robotic application

  • Total number of applications: 1,600
  • Number of applications per minute: 10
  • Material: 0.02cc per application = 32cc total
  • Pot life: 4 hours
  • Syringe size: 55cc filled with 38cc of material
  • Quantity: 1
  • Total application time: 160 minutes

Note that the fill of the syringe is approximately 20% more than needed. The added quantity is for yield and setting up the dispenser. It’s always better to have a little left over than come up short on a run.

If you’re applying the material manually, determine how much you need for your application and how many “fills” you can do per minute within the material pot life. Then determine syringe size.

Which size is easiest to use?

Syringes come in standard sizes, from the smallest at 1cc, to the largest at 55cc. The most popular size Appli-Tec provides is the 3cc syringe.

Due to its size and shape — it feels like a pen when you hold it — a 3cc syringe makes it easier to manually place “dots” or fill cavities in intricate parts with a certain level of precision and accuracy, as you can see in the photo at the top.

The following chart gives you an idea of syringe size when considering manual applications:

  • 1cc syringe –> diameter of a pencil
  • 3cc syringe –> diameter of a pen
  • 5cc syringe –> diameter of a Sharpie marker

Appli-Tec offers precision mixed and frozen adhesives, tailored to your exacting requirements, and packaged to suit your application — whether robotic or manual.

We also offer non-reacted adhesives packaged in multi-component pouches and cartridges, and large-volume containers.

Whichever format you choose, all our adhesive products are GHS compliant.

The CEO of Appli-Tec, Tim has over 30 years of experience in the pre-mixed and frozen (PMF) adhesives industry.

See more articles by Tim »

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