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Your Position: Home - Furniture - What is the lifespan of a plastic chair?

What is the lifespan of a plastic chair?

When you invest a significant amount of money in a piece of furniture, you would obviously want to know how long it will last. Plastic chairs have always been in high demand on the market. 

Needless to say, there are a plethora of well-known chair manufacturers today selling high-quality, long-lasting plastic chairs at reasonable costs. 

It’s simple to toss out a number, but the lifespan of a chair depends on various factors. In this post, we’ll go over a few variables to help you figure out how long your chair will last, as well as some tips to help it last longer.

An Overview 

Plastic chairs are also known as monoblock chairs. They are mostly made of polypropylene. Polypropylene is a strong material that can withstand a lot of stress without bending, fracturing, shattering, or deforming in any manner. It’s a pigmented thermoplastic, so the color isn’t only on the surface. 

There are several benefits to chairs: ergonomics, saving, and flexibility. The inventive chair is a one-of-a-kind piece of Plexiglas or colored plastic that saves solutions and unique designs that are limitless.

How Are Plastic Chairs Made?

A plastic chair is made in three different ways. They are as follows:

Rotational Molding 

Rotational molding is the initial step. Plastic models are generated in various methods, but they always need curved metal molds to get the correct shape. Rotational molding is the process where a large metal mold is injected with plastic polymer particles. Manufacturers cook it until it melts. 

The mold is twisted three-dimensionally to distribute the polymers to every section of the mold.  The mold cools down after a long period of spinning, and rotation reaches its last stage. Finally, the mold is revealed, and the shape of the new hollow chair is adjusted.

Injection Molding 

This method does not include any spinning. The polymers are instead heated at a predetermined temperature and pace. They are then poured into the mold and left to cool. 

Since the plastic is slowly poured and may dry quickly, manufacturers must ensure a high level of accuracy in this sort of molding process. 

The finished product will not be uniform if poured too rapidly. However, if done correctly, the outcome will be a plastic chair that is seamless and molded in one piece.

Gas-assisted Injection Molding

It is done by injecting gas into the mold. The gag injection forces the molten plastic out of some of the mold’s openings. This makes the channels lighter while maintaining their strength. All of the other sections of the injection mold stay the same, resulting in hollow and solid pieces that are comparable. 

During the manufacturing of plastic, they combine multiple types of polymers to create plastic chairs. This makes the chair far more durable than conventional plastic on the market.

Materials Used To Make Plastic Chairs

You may categorize plastic chairs by the type of plastic they use. The material used in a plastic chair has a significant impact on its lifespan. Thermoplastics and Thermosets are the two most common forms of plastics on the market.


One of the most widely used thermoplastics is nylon. It is both extremely sturdy and flexible! You can also mold it into a string or virtually any shape. These chairs are weather-resistant and comfy to sit on for lengthy periods.


This plastic has a wide range of applications. It is shabby plastic with a waxy touch, which can be twisted and shaped several times. These chairs are impact-resistant, sturdy, dent-resistant, and rust-resistant.


They are lightweight plastic that is stiff, strong, and robust. Plastic windows and channels are made of uPVC, which is suitable for outdoor usage. It is moldable but not as flexible as other thermoplastics. It is a long-lasting and cost-effective solution in the plastic furniture industry.


Acrylic comes in a variety of thicknesses, colors and can be opaque or transparent. These seats are UV resistant and easy to clean. These polymers are slightly stiffer and less versatile than nylon. Acrylic chairs, on the other hand, are non-toxic and environmentally friendly.


One of the most popular thermoplastics is polypropylene. Polypropylene chairs are both unbreakable and lightweight. It is resistant to damage, mildew, and weather deterioration. This sort of plastic has a natural feel and finish, which makes it one-of-a-kind!


Bakelite is a plastic mix made out of synthetic materials. As a composite, it is reinforced with paper or substance. You can find this in the electronics industry as circuit sheets and heat-resistant components. 


A thermoset is a high-intensity, warm-safe material. You may mold it into many shapes but cannot reshape it. It is a robust thermosetting material.


The PP chair’s fiberglass is another crucial material. Fiberglass imparts long-term durability to PP chairs. Adding fiberglass to a PP chair can increase the chair’s elastic strength, durability, load-displacement temperature, and high stiffness by forming a good interface between the two materials.

How Long Do They Last?

Perhaps the most significant advantage of polyethylene goods is their long-term durability. A plastic chair’s guarantee is generally up to two years. However, it can even endure for five to ten years. 

Furniture made of high-impact polyethylene is structurally sound, dent-resistant, and will not corrode. Furthermore, furniture made of polyethylene that is made in one piece is significantly less likely to break than furniture made of many components joined by mechanical fasteners. 

The durability is also reliant on the usage and the quality of the materials used to construct it. The issue with plastic chairs is that they are vulnerable to UV radiation and will rot and shatter much more quickly than their wooden equivalents. They also don’t support nearly as much weight as wood chairs.

Tip For Increasing Longevity Of Plastic Chairs

Here are a few tips to increase the lifespan of your chair.

Clean Them Often

Give them a quick wash using a cotton cloth and some detergent water. This procedure will aid in the removal of dirt and grime. To avoid water stains, remember to pat the chair dry after cleaning.

Use Epoxy

Apply epoxy on the plastic chair before it hardens. This type of plastic is employed in the form of a paste. It’s a protective covering that’s applied to plastic chairs. It resists all types of wear, dents, and deterioration.

Paint Your Chairs

Painting your outdoor furniture may be the best method to maintain it and extend its life. The paint creates an excellent seal that keeps insects and rots out while also providing sun protection.


Plastic chairs are made using three different procedures, with injection molding being one of the most popular. Consider the various components of the manufacturing processes before deciding on one that is tailored to your requirements. Once you’ve decided on a procedure, seek a qualified manufacturer that can deliver high-quality outcomes on your investment.

Answering the question of “How long does outdoor furniture last?” can be pretty tricky. If you’re not careful enough, you could end up with furniture that deteriorates quickly and leaves you scrambling for replacements within just a few years. On the other hand, more high-quality products can last a fairly long time, especially if properly cared for.

What is the lifespan of a plastic chair?

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