Category Archives: Caps & Closures

Choosing the Right Dropper Tip Fitment

A dropper tip fitment is an orifice reducer that is pushed into a bottle to turn it from an ordinary bottle into a dropper bottle. Which dropper tip fitment you choose depends on several things, including the properties of your product and the use application. Once you know the terminology used for dropper tips, making the right product choice is easy.

Droper Tip Fitment

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How To Choose Your Shrink Bands

Shrink Bands are often that final piece when completing your packaging project.  Choosing the right band is not always easy…don’t worry we’ve got you covered with some tips on Shrink Band selection at Freund.  We have many choices but want to make this step simple allowing you to finish with a product that is safe and acceptable for retail.

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Tamper Evident Packaging: Do you need it?

Packaging safety is a topic all suppliers have to grapple with.  It is paramount consumers are assured product is not jeopardizing health or safety when purchased.  Tamper evident products can be the ideal solution providing peace of mind for suppliers and consumers.  Tamper evident solutions provide real-time feedback if products have been tampered with during shipping or even on store shelves. Continue reading Tamper Evident Packaging: Do you need it?

Primary Container Closures: Don’t Get Them TWISTED!

Caps & ClosuresA dizzying array of container closures can be found in the rigid packaging market. Understanding the different types of closures will help you select the correct one. Each closure type performs a unique function. Here, we’ll focus on the two most common closure styles: continuous thread and lug style closures.

Continuous Thread Closures:Continuous Thread Closures

Continuous thread closures (also known as CT Finish Caps) are easily recognized by an unbroken, raised, spiral track on the inside of the cap. When mated to a container, the two spiral edges interlock in roughly 1 ½ turns, resulting in a tight, secure seal.

CT closures are available in both plastic and metal and successfully secure most contents, even when containers are tipped momentarily. Threaded closures, however, are not by default “LEAK-PROOF”. A definition of “LEAK-PROOF” systems is provided below.

Clearly, CT closures are utilitarian workhorses! They’re available with either a ribbed or smooth outer finish. Vertical ribbing on the outer finish provides superior gripping power for twisting closures – a useful feature when users’ hands are wet or slippery. CT closures are ideal for nearly any end-use application including chemical, health and beauty, automotive aftermarket, food and beverage, and medical products.

Lug Finish or “Quick” Twist Closures:

Lug Finish or Quick Twist Closures may be found on metal closures. Unlike their close relatives above, the spiral thread is intentionally broken to provide quick opening and closing. You’re likely thinking this compromises the closures sealing ability – that’s not entirely true. Rather than compromising its performance, this unique broken thread allows lug caps to seal in a quarter turn. Quick and easy opening and closing in a snap. Caps with this finish style are commonly used in canning products like jams and sauces, as well as beverage containers such as ice tea, juices, and other drinks.

Leak-Proof Container Systems:

You’re likely thinking, “Systems? I thought this was an article about closures.” Yes, leak-proof containers are sold as systems. Leak-proof container systems feature unique, interlocking threads on both the cap and container. Apply the closure to the container using the correct torque (twisting force) and the result is a leak-proof system – guaranteed. Two companies dominate this space: Nalgene and Kautex. Freund Container & Supply sells both and is proud to be North America’s exclusive Kautex supplier. Their unique design and relatively low sales volume drive their cost up. Cost aside, they deliver leak-free performance time and time again.

Now that we’ve covered basic closure styles, you should visit our Cap Sizer & Liner Definitions to learn about liner types, cap sizing, forming a seat seal, and about dispensing cap options or shop for Caps, Closures, and Liners now.