How do you easily melt plastic?

How to melt plastic at home

First, the plastic is sorted and cleaned to remove any unwanted residue. The plastic must be homogenized to ensure that only HDPE will be processed. If there are other plastic polymers in the batch, this can ruin the final recycled product.

HDPE has a density between 0.93 – 0.97 g/cm3. This is much lower than PET, which is 1.43 – 1.45 g/cm3, which means that these plastic polymers can be separated by the float-sink method. However, HDPE has a specific density similar to that of polypropylene (PP), which means that in the presence of PP separation is more difficult. In this case, near infrared radiation (NIR) techniques can be used, unless the plastic is too dark and absorbs infrared waves.

With respect to milk bottles, these can be easily reused if they are thoroughly washed first. To reduce packaging waste, buying plastic bottles in bulk is another good option.

How to melt plastic for gluing

How are plastic bottles, jerry cans, bags, etc. sorted? As we have already mentioned, there is a system for classifying and coding plastics in order to manage their recycling. In the main image of this article we see all the symbols that are part of this coding and that are usually stamped on the base or side of the object. Take note of the Plastic Identification Code for its management and recycling:

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So what are these plastics that cannot be recycled? This is a very widespread doubt because many times, when we are going to throw away something that we do not normally use and do not dispose of in the yellow container, we are not usually very clear about the best place to throw it away. Therefore, it is useful to know the types of plastics that are not recycled:

I really liked the report and the classification of the different plastics , my doubt is if in Argentina there is any plastic recycling course to be able to make tables, pots or also I saw knives . greetings thank you

How to mold plastic

How to create our own objects from our plastic garbage? It is already a reality. Reuse, recycle, develop your imagination and create a new source of income is what you can aspire to with the products we present to you.

On the Precious plastics website, you can find all the videos and plans to create the machines for free. They are educational videos, because it starts from scratch, to know how to recognize what kind of plastic we have at home.  In the second section, you can see how to collect the plastic and sort it (labels included). The third section is dedicated to explaining at what temperature to melt plastic and how to mold it.

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You can use it not only to recycle products you already have, but also to create new products. Perhaps it is a new form of income and work? The good thing about these machines is that they are totally Opensource, which means that at any time you can modify them to make them to your liking. The possibilities are endless, because you can use many different plastics, and create as many molds as you want. Here are some examples of what an atelier like yours could look like:

Plastic melting liquid

Repairing plastic items can be confusing for someone who has never done it before. There are no parts to replace (usually), no nuts to tighten, just repair the material itself.

Plastic can be easier to work with than you might imagine. With some heat and some pressure, many items can be fixed quite simply. So, before you resign yourself to tossing a broken piece of plastic into your recycling garbage can, here are some techniques you can use to repair plastic.

If you have two separate pieces of plastic that need to be joined together or if they have a crack, then you’ll need some plastic welding. The basic idea is to apply heat to the edges that are joined to melt the plastic until it is liquid enough to blur the edges. Additional plastic can be melted into the groove to create a stronger bond, but depending on the situation, this may not always be necessary.

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If your part has a large enough hole, you will need to resort to creating a plastic patch. The answer to this particular problem seems to have been best addressed by kayakers. Using a heat source (preferably a heat gun), soften the edges of the hole and the section of plastic you’ll use as a patch and carefully place it to make sure the hole is completely covered. This gets very hot, so you’ll need gloves. Once the patch is in place, you can use a hot metal spoon or trowel to smooth the edges.