Tuesday, May 25, 2021
Without proper closures, the world around us would be a very different place. Though the average person thinks little of them, many kinds of caps exist to uniquely serve the products they protect. Despite no prior experience working in packaging, virtually everyone is capable of understanding the different types of packaging closures.
Even at a glance, almost anyone can distinguish the purpose and importance of different cap types such as continuous thread, child-resistant, dispenser caps, and so on. Every form of cap is unique yet entirely utilitarian with a specific purpose. A quality closure needs to function and also be comprehensible at a glance. As we’ll see shortly, all our closures meet these qualifications and excel in quality.
This is easily the most common and recognizable of all closures. Continuous thread caps work exactly as you’d expect. The cap and matching container feature corresponding threads which interlock, creating a seal. The idea is that the thread will catch very easily and won’t require as much fumbling as finer threaded seals among appliance components.
Despite the looser-looking thread features, the seal is very reliable and even leakproof. As such, it’s no wonder that this design can be found across many industries and not just on common food containers. Virtually any container imaginable that stores a type of liquid likely uses a type of continuous thread. Furthermore, different types of these caps also exist to provide varying degrees of security, such as the lug cap, for instance. The most mundane place to spot one of these is the plastic closures for bottles such as sodas and soft beverages.
Most closures exist as removable seals enclosing goods before the goods are emptied out of their container. Dispenser caps instead stay attached to the container and provide an easier means to access otherwise difficult to handle or pour products.
Some of the more common varieties include features to reduce the volume of an item that could escape the container. This is commonly seen on skin and hair products. Other varieties include pumps, which, when depressed, discharge product. Such products can be discharged via spray or in small, manageable amounts. It’s commonly used for hair and body washing goods.
One of the most socially important inventions in closures has to be tamper-evident varieties. Two points, in particular, make these closures utterly essential. The first reason is the need to detect improper interaction with an item, such as if any items were handled roughly during shipping and merchandising. It’s important to tell if a cap was potentially loosened in any way; if this knowledge is procured, the end consumer can be protected.
A broken seal is a clear sign that an item should not be consumed as it likely no longer retains freshness. Due to being tampered with, it could also have other potential hazards. All manner of tamper seals exist across a wide variety of container types, and many come in various materials. The most common type found on closures is a simple pull tab or breakaway ring.
This type is the pinnacle of closure convenience. The unique design mixes a traditional cork with a handgrip. With an emphasis on quick access, this type of closure is most commonly fond topping beverages and ingredients in bars and restaurants. The basic idea is to negate the need to keep track of tools such as corkscrews. Instead, attendants can simply uncork bottles and recork them easily and efficiently by hand.
Like standard corks, bar tops also come in an array of materials. The stem portion will most commonly be cork, composite cork, or a synthetic material such as a rubber stopper. The top portion can be made of anything as it primarily exists to be gripped by the user. Plastic, wood, and alloys are the more typical varieties of material used.
Many items are simply not appropriate for all demographics—namely, young children and other vulnerable age groups whose curiosity may precede them. Any parent can tell you that kids often enjoy getting into things that they shouldn’t get into. While using intentionally uninteresting packaging helps deter fun-seeking babies, stopping them entirely is truly the best solution.
Child-resistant closures do just exactly that. Various mechanisms exist on the market, and they all have similar qualities. Namely, opening them requires a certain degree of literacy and dexterity. Other types also require hand strength that small children don’t have. A simple closure is a powerful tool to keep children out of harm’s way.
The simplest closure type of all is, without a doubt, the snap-on lid. The container features a matching lip, which the typically flexible cap pops over. The result is a simple and surprisingly solid seal. Different varieties exist with varying degrees of security. Various jugs and bottles feature snap-on closures for easy access by hand, whereas pails and buckets feature such a strong seal a tool is needed to uncap them. Regardless, all feature the same overlap and flexibility for a safe and secure close.
Deciding which closure is right for your product doesn’t need to be a convoluted process, as understanding the different types of packaging closures is a matter of exploring the many options. Ultimately, which one is right for you reflects the products your business is offering. The same is true for materials, as many options serve varying products. The most common material for closures is typically plastic, but even then, there are grades that best serve specific products. For instance, a large container of ingredients likely requires a snap-on lid made from food-safe plastics.