What is the strongest glue to use on plastic?

For every material, there’s an adhesive. Finding the right plastic glue for your projects can be easy. In this article, you will learn which one to choose and how to apply it.

WHAT IS PLASTIC GLUE?

Plastic is used to manufacture countless products, from toys to space vehicles. Thanks to its flexibility and durability, it has become an incredibly useful material today. However, due to its composition, it is not always 100% compatible with all adhesives, as some types of plastic glue may dissolve it or not be effective in bonding. Because of this particularity, it is important to find the specific adhesive for each project or repair.

A GLUE FOR EVERY PLASTIC

In our daily lives, we encounter enormous quantities of synthetic products, each with different properties. Therefore, when choosing glue for plastic, it is important to know beforehand the composition of the material to be repaired and the specific characteristics, if any, of the joint we want to achieve. In some cases, it may be enough just to fix pieces. In others, on the other hand, we will need to fix and guarantee certain flexibility, resistance to possible vibrations or shocks, exposure to certain temperatures or even multiple uses.

The best way to identify the composition of synthetic material is to consult the information on the label. Generally, we will find the indication with a number inside the recycling symbol. For example, polystyrene is coded with a six or with the letters “PS” and is found in objects such as fashion accessories like bags and purses. For this type of plastic, you can use Loctite Super Glue-3 Original, a high-strength instant adhesive suitable not only for plastics but also for a wide range of materials.

GLUE FOR HARD PLASTIC

There are other glues, such as wood glue or carpenter’s glue, that do not react as expected when applied to hard, high-density synthetic surfaces. This is the case for objects such as buckets, boxes, and other containers. Hard plastics are made of polyethylene (indicated with a two or “HDPE”) or polypropylene (indicated with a five or “PP”), and if we have to work with them, it will be necessary to find an adhesive that guarantees the durability and effectiveness of the fixing.

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For these types of materials, it is advisable to use a specific plastic glue such as Loctite Super Glue-3 Plastics, a bicomponent with an easy-to-apply activator, ideal for solid and durable bonds on all types of plastics, including the most difficult ones. In addition, it retains its translucent color after drying and facilitates application with an anti-clogging cap that allows the adhesive to flow with each use.

ADHESIVE FOR FLEXIBLE PLASTICS

Flexible plastics are commonly used in items such as toys, footwear, or sports accessories. To fix these items or work with these materials, it is best to use a flexible plastic glue such as Loctite Super Glue-3 Power Gel, an instant adhesive formulated to resist shock, twisting, and vibration. In addition, thanks to its gel format, it is easy to apply and has a translucent finish. It has been developed with extreme care for the most specific uses and is available in different formats so that repairing a shoe or your favorite sports accessory does not require a professional.
Which plastic glues to buy

The first thing you should do is look at the properties of the plastic you are going to glue. They are described by a mark inside or next to the recycling symbol.
If the code is 6, or Ps, it means that the type of plastic is polystyrene. It is the typical transparent plastic. The best glues for this type of plastic are polymer glue, epoxy glue, binder, super glue, and cyanoacrylate, also known as instant adhesive or cyano.

If, on the other hand, their numbers are 5, 4, or 2, or the plastic has the codes UMHW, HDPE, LDPE, or PP, then it is polypropylene/polyethylene, being this typology practically impossible to glue, so you will have to ask for advice in specialized stores to find a solution.

For type 7 plastics, the best is cyanoacrylate or epoxy glue.

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And finally, for ABS plastic, which is very rigid and comes from petroleum, and which is very common in televisions, household appliances, cars, and computers, the most appropriate glue is epoxy.

THE 5 BEST TYPES OF GLUE FOR PLASTICS IN 2022

In today’s market, we can find all kinds of glues that have been designed for different types of materials to be joined. In this case, we have made a comparative list with the best glues for plastics so that when you go to the store to buy them or buy them online, you can buy the one that will really work and give you incredible results.

PATTEX CLEAR PLASTIC GLUE

This product is one of those chosen by the main experts in this type of glue since it has the guarantee of an excellent brand like Pattex. Among its features, we can highlight that it is transparent and therefore will not be seen when applied to the pieces to be joined, and is water resistant, something that comes in handy if it is, for example, an object that is usually in contact with water or that can get wet by rain.

The drying time is approximately 10 minutes and must be pressed well so that both pieces adhere without a problem.

GLUE FOR PLASTIC IN BRUSH

There are pieces that we want to glue that are very small or that need a more precise manipulation. In this case, you can buy one of the glues for plastics of the brand Loctite Super Glue 3. In addition to gluing this material, you can also do it with others with the same efficiency.

It is a transparent product that can bond in record time, so it is recommended to be precise in each application. A new formula has been developed to make it more resistant to water and to temperatures ranging from -50 to 120 degrees Celsius.

PATTEX NURAL GLUE FOR PLASTICS

With a new reinforced formula, you’ll have the ability to repair plastic with more precision than any other. It consists of two tubes that, when their contents are joined and mixed, create a formula capable of holding two pieces of plastic with maximum strength. The product has a total of 2 minutes before it takes effect, so it is important to apply it quickly, but decisively. Once an hour has passed, the glue will be hardened and will be able to resist 100 kilos without any problem. In the same way, it is resistant not only to water, but to any liquid, being able to adhere to PVC, nylon, methacrylate or ABS plastics.

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TRIPLE STRENGTH GLUE FOR PLASTICS

We present a glue for plastics and other quality materials that can be used even professionally for workers who require this type of product.

It is a glue that comes in tube format and is supplied drop by drop, so it is designed for small and delicate surfaces, as it is transparent and leaves no trace once it has been properly applied. It should be applied quickly since its drying effect takes only 3 seconds to bond. The manufacturer reminds us that the surfaces must be dry and clean at all times for the result to be excellent.

PATTEX EXTREME PRO PLASTIC GLUE

One of the strongest models that the Pattex brand has for plastic glue is the one we present below, with which you will have professional results at a very affordable price.

It is a product with two tubes which you must join their elements so that, in the shortest possible time, you have a bonding strength that makes it possible to withstand up to a total of 100 kilos. On the other hand, in steel, once the 4 hours have passed, you will have a total resistance of 200 kilos in case you want to use the mixture in steel.