The most common hard plastics are HDPE and PET, which are commonly used in chairs, crates, and some juice bottles. The versatility of hard plastics allows manufacturers to create a wide variety of products. You might notice these materials in the packaging of shoes, plates, and bowls, and you’ve probably seen them in commercial buildings, as well. If you’re curious about what these products can do for your home, keep reading.
Hard plastics resist indentation by a harder body. When a stronger body attempts to indent a softer plastic material, the softer one is damaged. The most common way to measure plastic hardness is to use a crunch test on two pieces of plastic to see which one is harder. These tests can be extremely useful in building construction devices and industrial parts. It can also help you decide which type of plastics you want to use for a given application.
Soft plastics are flexible, and can be easily rubbed in your hand. They’re commonly used in bread wrappers, pasta bags, and bubble wrap. Hard plastics are stiffer and more durable, and can be used for products such as crisp packets and candy. Both types are used for packaging, and their hardness levels can vary. When choosing a hard plastic, you should pay close attention to the metric system and the manufacturer’s website.
A hard plastic’s resistance to permanent indentation by a stronger body is defined as its hardness. The more brittle a plastic material is, the more it will be permanently damaged. This characteristic is measured in tensile tests and is often reported in technical sheets of plastics. It’s important to know this property if you’re designing a construction device or an industrial part. During the crunch test, you can see if two plastics are the same.
A hard plastic will be more resistant to indentation by a softer body than a harder one. The more rigid a piece of plastic is, the harder it will be. This property makes it difficult to bend, crunch, or rub together. Therefore, hard plastics should not be used in product design. It is important to understand the material’s strength when comparing two materials. It can also affect how it responds to shock, which can cause cracks.
As a rule, the harder a plastic is, the harder it will be. This is an important property for construction and industrial devices. It is important to know how hard a material is before you start building with it. The harder a piece is, the greater the chance of cracking. However, a hard plastic may be more difficult to indent when you are trying to make it into a product. But if you do the crunch test correctly, you should have no problem making a durable product.