You will notice one common similarity between wine bottles, shampoo bottles, PET bottles, and glass jars. To produce a secure seal and safeguard the product inside, each needs a cap Screw Caps For Packaging.
You may already be familiar with the traditional screw caps. You see them on soft drinks and bottled water. But when you go to a grocery store next time, pay attention to the other products on the shelves. It may surprise you to see a wide variety of closure types you can use for your products.
So if you are looking for the right screw-on closure for capping your product, then you have come to the right place! In this discussion, we will be talking about the common types of screw-on closures to help you decide which one is right for you. We will also give you the recommended capping machine for each type of closure.
Let us start with a brief overview of what screw caps are in the next section.
A screw cap is a threaded cap that requires torque before you can tighten it onto a container. There are a lot of screw cap variations - from the simple flat cap to the trigger sprayers.
Both chuck cappers and spindle cappers can normally handle all types of screw caps but with a couple of exceptions. Your choice of a capping machine will be affected by your production capacity, your container, and your chosen cap.
Let us now go on with the 7 common types of screw-on closures.
These are screw caps that have flat tops. You can mostly find flat caps on soft drinks and bottled water. Chuck cappers and spindle cappers can both handle flat caps. The only difference between these two is the capping speed of each machine.
These are similar to flat caps. The major difference is that flip top caps are flipped open instead of unscrewed. Containers of salad dressing and ketchup bottles used these kinds of caps. And because flip top caps are closed when placed and sealed onto a container, you can use either a chuck or a spindle capper.
These screw caps do not have flat tops. You need to pull or twist sports caps which often requires you to squeeze the bottle. This allows a restricted product flow from the container. There are some bottled water and energy drinks marketed using these cap types. One good example is Gatorade.
Chuck and spindle capping machines work well with sports caps. Though special chuck inserts might be necessary if you are working with extended sport cap tops.
Press top screw caps have one side which when pressed, causes the opposite side to pop up. Thus, opening the container. These are also variations of the flip-top screw caps. Some of the popular products using these types of caps are shampoos and body washes. You can use a chuck or spindle capping machine for press top caps.
Trigger sprayers are unique types of screw caps found on a lot of household products like glass cleaners. They include a sprayer and a straw that produces a mist of the product from the cap. You can easily tighten down trigger sprayers using spindle cappers. You’ll encounter problems when using a chuck capper because of the protruding top.
Roll On Pilfer Proof (ROPP) screw caps are special caps used by packaging companies. They are popularly used on bottles of wine too and require a specific capping machine for creating the seal. An ROPP cap allows for tamper-evident and secure seals. You can read on how aluminum ROPP closures are made if you want to know more about these caps.
A capping machine designed to handle ROPP caps is equipped with tailor-made knives. These knives are used to carve threads on aluminum blanks using the bottle’s threads as a basis.
Some products may need to use a cork or bottle stopper to create a seal on the container. Sample products include perfume, vials, and wine bottles. Bottle stoppers can be made of rubber, glass, plastic, and others. Wine bottles are the famous ones that use stoppers. So if you are working with wines, it is good to know how to choose the right wine stopper for your needs.
You can securely seal many bottle stoppers and corks using a snap capper machine. This machine normally uses either press on heads or snap belts. Snap belts gradually decline to push caps into the containers. Meanwhile, press on the head stomps the caps into the containers as the containers pass under them.
There are other screw-on type closures out there but the seven discussed here are the most common ones. When choosing a cap, remember that your cap choice will determine the capping equipment type appropriate for your cap.
While capping machines exist to handle all of the screw-on closures mentioned above, you can increase your productivity and efficiency by choosing the right machine for your cap, bottle, and product.
Want professional advice in determining the right capping machine for you? Try Levapack. They provide free consultation services along with packaging machine customization. Feel free to visit their website for more information.