Two Types of Noise Reduction Earplugs Based on Structure

The sense of hearing is as important as our sense of seeing, smelling, and touching. However, it is the one that is being exposed to many factors that cause damage. First is, of course, the ears’ exposure to loud noises. Other factors include dirt, small insects, and water. Since noise is the number one factor, we will be focusing on such. Scientifically speaking, the ears can only tolerate a certain level or decibel of sound. When the sound exceeds that level, it will already be detected by the brain as noise.


Frequent exposure to loud noises may damage the eardrum slowly and later on cause permanent hearing loss. People who are at high risk are those whose occupation involves loud noises. Such include musicians, bartenders and waiting staff, construction workers, and airport personnel.


Fortunately, products called earplugs have been invented to protect those people from losing their sense of hearing. These items have been designed to reduce the level of sound coming in the ears without removing their ability to hear speeches and other sounds. They are a lot of available brands in the market and they come in two different forms based on how they were constructed.


The first type is the so-called expandable, noise reduction foam earplugs. As the name implies, it is a type of earplug that is made of closed-cell and high-density foam materials that are able to expand in order to match the shape of the user’s ear canal. Some manufacturers use PVC foams while others use PU foams. The PVC-made earplugs are easier to put and stay in the ear canal better than the PU-made ones since they are stiff and have a cylindrical or hexagonal shape. They are also somewhat resistant to humidity. On the other hand, PU-made earplugs have a bullet- or bell-like shapes and contain ridges. With their smooth texture, they are more hygienic than the PVC ones.


The next type of earplugs based on the structure is the pre-molded earplugs. As can be denoted by the name, their shapes have already been fixed and can fit all sizes of ear canals. They are produced using silicone, rubber, PVC foam, or plastic material. The ideal things about this type are that they are reusable, washable, and very easy to carry around. In addition, as compared to foam types, they can just be easily placed in the ear canal without having to roll them out to achieve a certain shape.


According to , pre-molded earplugs are also more durable as compared to the foam plugs. However, they may not be as effective as the highest quality foam earplugs when it comes to noise reduction. People who will be using pre-molded ones should also make sure that they regularly clean such in order to prevent ear infections. Likewise, these earplugs should also be stored properly when not in use. Fortunately, most of them come with travel or storage cases. Nevertheless, both types of earplugs are effective when in reducing high levels of noises and can protest the user from hearing loss. The choice of which is better solely depends on the needs and wants of the user.