Your Guide to Plastic Bottle and Jar Closure Types

Giving your packaging the right closure type makes the product safe and easy to use. Keep your customers happy by making sure the jar closure is the right one.

When it comes to consumer experience, the design of a bottle or a jar plays a crucial role, and it can even impact future purchasing decisions. Considering the importance of the jar or bottle closure design, there are a variety of options to choose. In fact, the sheer number of choices may make it a bit overwhelming to pick one.

Jar and Bottle Closure Types

Here’s a quick guide to the various closure designs and what they’re best suited for.

Flip Top Bottle Caps

These caps are typically useful for liquids and solutions of a creamier consistency. They work for tubes and for bottles as well, making them the perfect solution for cosmetic products. In terms of consumer experience, they’re easy to flip open and dispense a bit of the bottle’s contents.

Spout Caps

These are ideal for bottles that contain anything that need to squeezed out — from mayo to glue, these spout caps are ideal. Depending on the size of the bottle and the contents you fill within, there are different tips to choose from. Also known as ‘Witches Caps” a handy feature of this type of cap is the seal to keep the content of the bottle secure between uses.

Screw Caps

The advantage of screw caps is that they seal in the contents of the bottle or tube, keeping the solution within fresh and sealed off from external conditions. You can choose from something with wadding or without, or a smooth or ribbed surface. The ribbed surface gives consumers a firmer grip which is helpful if the product is designed to be used when the person will have wet hands.

Tamper Evident Caps

When it comes to sensitive solutions that could be potentially dangerous if mishandled, it pays to be extra cautious.  For chemicals, pharmaceuticals and other solutions that need special care, tamper evident caps come in handy. This way, you can tell in just a glance whether your product has been opened or tampered with.

Child Resistant Caps

Some bottles contain substances that are best kept away from curious little hands. For these, child resistant caps (sometimes called CRC) are ideal. These caps protect the littlies from helping themselves to possibly harmful contents. At the same time, it’s designed to be simple for adults to access the contents of the bottle.

Plastic Jars, Jerry Cans, or Bottles?

Plastic Jars

Food-grade PET packaging jars are useful to both producers and to the end consumers. Plastic jars like these are excellent for spices, honeys or other condiments. However, they also have use cases for health supplements or hardware bits like nuts and bolts.  Despite being highly durable, these PET jars are lightweight, giving them a huge advantage when it comes to shipping. The resilient material can tolerate a few bumps without a fuss. These jars do not shatter even when dropped so they are quite popular among producers and ultimately, make a lot of sense of consumers.

When the contents of these jars are finally emptied out, they can be disposed of by adding them to the household recycling or they can be reused at home to hold other items. PET jars with their well-fitting lids offer you an excellent packaging and storage solution. Their robust, simple design enhances its versatility.

Jerry Cans

Jerry cans were originally developed during the second world war for convenience, robustness and easy storage of fuels. The design continues to prove useful even today for a range of liquids. These cans are ideally shaped to be stacked, making them easy to line up for transport or storage. With a spray or pump attachment, the liquid within is simple to dispense.

Our jerry cans available in NZ are food grade, with the capacities of jerry cans available making them versatile enough to be used for domestic as well as commercial purposes. The tamper-evident caps available for certain sizes allow you to use these jerry cans for even those liquids that are labelled dangerous goods (DG).

HDPE and LDPE Plastic Bottles in NZ

High-density polyethylene (HDPE) bottles are popular for their durability and robustness. These versatile containers work equally well for foods, consumable liquids, cosmetics, even household chemicals and cleaners. Choose from the standard shapes with a range of differently sized necks.

Low-density polyethylene (LDPE) bottles offer more flexibility without compromising on strength. These are ideal for products that need to be squeezed out of a bottle. These are unreactive to several chemicals and can even withstand a wide range of temperatures. Since they’re available in both opaque and translucent options, they offer producers a wider range of choices in terms of design.

The Basics of Plastic Bottles and Jar Closures

If you’re still not sure what you need, give us a call at Comag. We’ve had years in the industry, and can advise you on the best solution to meet your needs. It’s important to choose the best packaging option for your product longevity, style, and safety.