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Best Practice tips and techniques for epoxy burst pouch / burstable seal bi-packs.

You may want to save these tips – and refer to them when training your cable assembly production team.



Here are instructions for burst pouch bi-packs

(with notes for best results)


Step 1: Roll the pouch toward the burst seal.


Step 2: Use your thumbs to apply pressure and rupture the burst seal.


Step 3: Use a table edge to mix the resin and hardener (Part A and Part B).

I recommend counting 25 passes to achieve a uniform color and mixture. In each pass, methodically push all the material to one end of the package, then to the other end. Check the corners of the bi-pack to ensure all the material is mixed in. Counting the number of passes (instead of minutes) helps to ensure a uniform mixture, without overmixing.

Also, be sure to note the time. The epoxy’s pot life and work life begin the instant it’s mixed. Some epoxies have a pot life of 2 hours, some are 24 hours, so be sure to read the data sheet. It’s extremely helpful to set up an efficient, streamlined production process, which can minimize epoxy waste.


Step 4: Cut the corner of the package and squeeze the mixed epoxy into a dispensing syringe.

Once in the syringe, it must be degassed. To remove trapped air, you can use a vacuum de-airing process or centrifuge, depending on what works best for your process and application.


READ THE BLOG:  Epoxy Bi-Pack News – and Usage Tips for Best Results


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Kathleen Skelton

About Kathleen Skelton

Kathleen Skelton, as FOC's Director of Strategic Marketing, utilizes her expertise in business development, online strategy, market planning, digital best practices, standard operating procedure development, and content management. A graduate of Curry College, she holds degrees in Communications and Education, English and Psychology. Kathleen resides outside of Boston, MA with her husband and four children. Follow @KATHLEENSKELTON