Because the lid usually has to bend to get it off. If if is too rigid,it will soon break.
Examples of thermosetting plastics (or just thermosets) include amino, epoxy, and phenolic and unsaturated polyesters.
Because plasitc have a basic structure they can be put into groups. plastics are made up of oil extracts and cemical compounds. the real anwser is plastics contain things called "polymers" with makes the "p" in their names.hope this help you guys out. :D
Valves are made from metals, including brass, bronze, iron, steel, and alloys, as well as from plastics.
The raw feedstock for a lot of polymers is indeed petroleum.
Cream crackers are called so because they were originally made with cream of tartar, which is a byproduct of wine production. Cream of tartar gives the crackers their light and crisp texture. The term "cream" in cream crackers does not refer to a dairy product, but rather to the cream of tartar used in their production.
No, it's made out of different metals and plastics.
Metals and plastics in different forms ODD QUESTION ?
They are mainly made of different types of polyester or nylon.
on a molecular level they are different. the polymers they are made up of have different shapes
cream youget
There are many different kinds of fittings. Traditional fittings are brass or bronze, nowadays they are made from many different and excellent plastics. The plastics, of course are much cheaper.
Many plastics are.
Mainly different types of steel, and some plastics.
Different plastics, most are proving better than metal.
No, carbon itself is not a type of plastic. Carbon is a chemical element found in all living organisms and is the basis of organic chemistry, while plastics are synthetic materials made from polymers.
the plastics which are used are mostly very strong, light and sturdy because of the particles and polymers in the plastic itself.
Car door panels may be made of a number of different materials. Most of these panels are made from metal or plastics.