If by "specific weight" you mean density, the density of melted plastic is pretty much the same as the cooled and solidified plastic. There are a number of different plastics out there, and their densities vary. They might range from a bit under a gram per cubic centimeter to a bit over 1 and 1/4 grams per cubic centimeter for "typical" plastics (and with no air injected into them).
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Yes, plastic can be melted and reshaped into a new form through a process called plastic molding.
Yes, acrylic plastic can be melted. It has a relatively low melting point compared to other plastics, making it easy to shape and mold when heated. However, caution should be taken when melting acrylic as it can release toxic fumes.
Plastic plates are recycled in the same fashion that other plastic materials are recycled. The plates are separated, ground into chips, washed, and then melted.
Some creative ways to repurpose melted plastic in crafts include making jewelry, creating sculptures, designing coasters or trivets, and crafting decorative bowls or containers.
Yes, melted plastic can hurt you. The primary danger is from a burn. Melted plastic is hot, and it tends to stick to skin and clothing. It is exceptionally dangerous stuff in that regard.
Plastic is always going to be plastic. When plastic is melted it becomes hard.
Ammonia is not a cleaner we'd choose to remove plastic from surfaces. It (ammonia) won't dissolve or "melt" the plastic, so it is ineffective in removing melted plastic from surfaces.
Melted plastic is generally non-toxic and usually a pain to remove. It is generally disposed of as trash, as it cannot really be re-used. If it's hot, it is hazardous as it can burn you and tends to stick to skin and materials. In that light, it is dangerous. Melted plastic is the material used in injection molding. That melted plastic is not "bad" as it is being used for a purpose (the manufacture of goods).
melted plastic
No, heating would cause it to lose mass. It may be nearly unmeasurable, but it would lose weight.
Smoke or gas let off by a melted plastic spoon is toxic and should be avoided. The cooled plastic can be disposed of in the trash in a normal way.
These plastic bottles are first shredded to produce plastic chips. Depending on what they will be recycled to make these plastic chips may or may not be melted.
NO
a long piece of plastic
Plastic is melted by applying thermal energy -- heat. Plastic "bits" are dumped into a hopper, and a screw type feed mechanism forces them through a heated section of the screw housing. Resistance heating elements are used, and they convert electricity to heat energy to melt the plastic. The temperature is controlled by electronics, and run appropriately for the type of plastic being melted. This melted plastic is then forced out the end into molds in a process called injection molding.
It is history. The paper bag and iron is for wax. If you did that first, you just melted more plastic into the fabric. It will not come out. If you had froze it first, it might have popped off, or it may have already been into the fabric.