Best Glues for Plastic

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Glue for Plastic Buyer’s Guide.

Choosing the correct type of glue to match the needs of your plastic will ensure that the best bond is achieved and will ensure that no damage results on your plastic from utilizing the superglue.

Choosing the Best Glue.

When choosing the best glue for plastic items, first look at the base or side of the container for the recycling symbol on your plastic item.

Different types of plastic will need a different type of glue in order to achieve the best bond, as well as ensuring that damage to the plastic is avoided.

The recycling symbol is presented by three arrows that form a triangle, while inside of the triangle, there is a combination of letters and numbers.

If the recycling symbol shows either PS or 6, then the plastic is polystyrene, and a poly cement is the best type of glue to use, or you could use a cyanoacrylate glue or an epoxy.

If the recycling symbol has a 2, 4, or 5 inside of it, however, or PP, HDPE, UMHW, or LDPE, then you must find a specific glue for your plastic as such plastic materials may be difficult to glue.

To find the best glue for these plastics, ensure that the labeling of the glue refers to your recycling symbol specifically.

Alternatively, if your recycling symbol features a 7 or a 9, then your plastic material may consist of plastic resins, and epoxy or a cyanoacrylate glue may be the best option.


Before gluing plastic, ensure that the plastic item is cleaned effectively and that there is no grease or dirt on the plastic.

To ensure that your plastic is cleaned well, wash your item with warm, soapy water and dry thoroughly, trying not to touch the plastic with your fingertips to avoid transferring natural oils back onto the plastic.

You should then sand the surface of the plastic with sandpaper that is up to 200 grit so that the plastic edge loses its smoothness.

Some glues, although not general glues, will require mixing to form the appropriate substance that will achieve a good bond, so mix your glue separately on a disposable wooden surface, for example.

Next, take a small brush and apply a light yet even layer of the glue to both surfaces that you want to glue.

Press the two surfaces together and press firmly to ensure that any air bubbles are eradicated. If any glue leaks from the join of the plastics, wipe away quickly.

For glue that requires a substantial amount of time to bond fully, use a clamp, or masking tape, to keep the pieces together while the glue is working.

Looking After Glue.

After you have used your glue, ensure that you place the cap back on tightly, ensuring that no excess remains around the edges.

Your tube of glue should last up to one month once it has been opened, although this will vary on the type of glue and the brand of glue.

Once your glue has been opened, the humidity of the surrounding soon enters the container, and the glue will begin the polymerizing process.

Other Uses for Glue.

As well as gluing plastics and other materials together, there are many other uses of glue. For example, if there is a hole or a crack in a wood, try using glue and sawdust to fill in the gap.

Additionally, try using super glue to make your fingerprints visible, peeling back dry copies of your very own fingerprints.

However, do not do this if you have sensitive skin, and only use a mild, general super glue.

Expert Tip.

If you get superglue on your hands, you may be able to peel the dried glue from your skin.

However, if this is not possible, try creating a mixture from warm water and soap and soak your hands in the mixture for up to one minute, allowing the glue to soften and peel away more easily.

Alternatively, you could try this mixture using laundry detergent to provide you with a stronger soap.

If this does not work, then try soaking your skin in mineral spirits, a method that is perfect for sensitive skin, or acetone if your skin is of a normal variety.

Other home remedies include using some butter or margarine to loosen the glue stain and the area surrounding it, or you could use olive oil.

Alternatively, you could create a mixture of salt with a little water added to create a paste which should be then rubbed into the skin until the glue stain has lifted from the skin.

Did you Know?

Superglue was discovered accidentally in 1942. Dr. Harry Coover was aiming to create clear gun sights made from plastic as an addition to the war effort for allied forces in WWII.

He stumbled upon the substance cyanoacrylate, although dismissed using it as it was unsuitable for the brief.

However, some years later, Dr. Coover stumbled on cyanoacrylate once more, this time aiming to create an acrylate polymer that was heat resistant for jet canopies.

The benefits of this super sticky substance were soon realized, and superglue in its earliest form was launched under the name β€˜Eastman #910’ in 1958.

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