is epoxy safe to use on plastic cups?

Epoxy is a common substance used for many different things, such as gluing and coating. However, not all plastics are compatible with epoxy; some types of plastic can actually be damaged by the adhesive.

Can I put epoxy on plastic cups?

Epoxy is a two-part resin that cures when catalyzed by a chemical hardener. Epoxy resin is often used to bond surfaces together and is used by hobbyists to make things like custom-made pens and key chains.

It can also be applied to plastic cups, but this practice isn’t recommended because the epoxy will not adhere as well as it does to glass or metal.

Epoxies are water resistant and durable, so it’s easy to see why people might want to use them on certain items like garden furniture or wooden cutting boards.

However, epoxies aren’t always meant for every surface; they need time before they’re cured properly in order for them not only hold their shape but also remain flexible enough so they don’t crack or break under pressure

Does epoxy react with plastic?

Epoxy is a chemical compound that typically consists of two different substances. One substance is epoxide, which is a plastic or polymer.

The other substance is an acid, usually derived from petroleum products such as petrolatum. Epoxy can be used in many ways: as glue for woodworking projects, as sealants for glass windows and aquariums, and to hold together pieces of metal that are cold-welded together.

Epoxy also has many industrial uses such as sealing pipes and cables in oil rigs and water systems; it’s even used to make artificial limbs!

Plastic on the other hand refers specifically to petrochemicals like polyethylene terephthalate (PET), polyurethane, or polystyrene (PS).

These materials are made by compacting together different molecules into long chains called “polymers” — hence the term “polymerization”.

Is it safe to drink out of epoxy Cup?

The cups are safe to drink out of. You’re not supposed to drink out of plastic cups anyway, so don’t worry about it too much! Most likely the cups will break easily if used for drinking.

If you want something that is more durable, consider getting metal or glass containers instead (like a mug). That way you won’t have to worry about breaking them when you’re drinking from them.

Is it safe to epoxy Starbucks cups?

You are right, it is safe to epoxy Starbucks cups. The cups are made of plastic, so they can be epoxied. They are also made of paper, so they can be epoxied.

As a matter of fact, they can even be made out of metal and still be able to be epoxied!

Does epoxy burn plastic?

While epoxy is a fairly common choice for table tops and other furniture, it’s important to remember that these materials are not intended for use with all plastics.

While most plastics are safe to use with epoxy, some are more susceptible than others. In this case, you should avoid using epoxy on plastic cups because they have a greater chance of being damaged by the chemicals in the glue.

If you want to create a fun craft project or make repairs around your home, there are plenty of other options available that won’t damage your cups! You can try using wood glue instead of epoxy—it’s less likely to cause problems and works just as well at holding things together.

What kind of cups can you epoxy?

Epoxy is safe to use on many different types of cups. Some of these include:

  • Plastic cups
  • Paper cups
  • Ceramic cups
  • Glass cups (with the exception of some very delicate glassware)

What plastic does epoxy not stick to?

Epoxy is not recommended for use on polypropylene, high-density polyethylene, polyethylene terephthalate, and polyvinyl chloride plastics.

These materials are not compatible with the curing process of epoxy resin. Epoxy will not stick to these plastics because they have a different chemical structure than other plastics that do work well with epoxy (polycarbonate or acrylics).

Many people also wonder if epoxies can be used on glass and metal surfaces. No! Epoxies cannot be used on either glass or metal as they will not adhere properly to those surfaces.

Can you put resin on plastic?

In general, it is safe to use epoxy resin on plastic. However, you should avoid using epoxies on metal, wood, or glass items.

You can also use epoxies on paper by making a mixture that contains equal parts of resin and hardener instead of using only one part of each as you would normally do with other materials.


In summary, it is safe to use epoxy on plastic cups. Epoxy does not react with plastic and can be used on any kind of plastic.

It is not recommended to drink out of your cup or other items that have been coated with epoxy because it could cause irritation in your mouth if consumed regularly over time.

Epoxy resin can also burn through paper but will not burn through a plastic cup unless there is something else inside causing an explosion like gasoline or oil which would be unlikely if you’re just drinking water out of one cup!

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Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

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