Seals for bottles

Containers are products made from different materials (commonly plastic) whose function is to contain and protect different goods.

In different industries, the use of packaging is extremely important, since it allows the handling, storage, distribution and commercialization of products in a simpler and more practical way. Among the most common products that are contained by means of packaging (such seals for bottles) are the following:

– Liquids such as oils, water, acids, additives, refrigerants, beverages.

– Solids such as food, metal parts, spare parts, machine parts, toys.

– Gases

Containers, in fact, provide protection and containment to the materials inside them. However, in order to be able to introduce any material, one of the ends of the containers must be open. 

By having an open end, there is a risk that some unwanted elements may come into contact with the contained materials. For example, dust from the environment, water, bacteria or fungi.

To give complete protection to the materials, the containers should also have lids.


Lids, also known as closures or lids, are pieces made of the same material as the container and are placed on top of the container to close or seal it.

It is important to emphasize that the closures must have the same shape as the mouth of the container. That is to say, if the mouth of the container is oval, the lid should have this shape, although sometimes pieces with other shapes and made of other materials can be used to provisionally cover a container.

The relevance of the use of lids lies in the fact that they prevent contact of the contents with the outside and also prevent spillage or loss of fluids or other materials.

Importance of measures on lids

In order to properly perform the function of closing or seals for bottles, it is necessary that the lids are manufactured with exact measurements that allow their edges to fit exactly with the mouth of the container.

By having caps with exact measurements, mishaps such as the following can be prevented:

– Loss of materials

– Spillage of fluids

– Introduction of bacteria and viruses

– Acceleration of the decomposition process

In order to produce closures with the required dimensions for the containers, it is necessary to have suitable molds.

Advantages of using liner closures

One of the first benefits of using a liner (in seals for bottles) is that it helps to maintain the shelf life of food products, protects flavor, freshness, authenticity and quality. It is a worthwhile investment because it avoids product losses due to spills or deformation of the container. 

Obviously, all possible scenarios through which the containers will pass must be considered, such as extreme temperatures varying from cold to heat. It is also necessary to consider the means of transport, if it will be airborne, the pressure changes, so the use of the lid with its respective liner is recommended.