High-density polyethylene

Polyethylene pellets are first melted, and then transferred through a die unit where the melted polymer is transformed into a circular tube bubble. Once cooled the bubble is destroyed in half at the end of nip rolls. The destroyed bubble later revolves to become

Recycling of Polyethylene Terephthalate In the United States, over 245 million tons of municipal solid waste (MSW) was produced by consumers in 2005. This is approximately 4.5 pounds of trash per person per day.[3] This same year, 79 million tons of waste were recycled, a dramatic increase from 15 million tons in 1980.[3] Of the total MSW in 2003,11.1% (26.7 million tons) was plastic. Although only 3.9% of plastics disposed in 2003 were recycled, PET was recovered at a rate of 25%.[4]

The experiments will Asses weather the mealworm is capable of digesting, not only polystyrene, but a more diverse set of plastics, including High-density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE). The experiment will be conducted over a few weeks and will study the trends in the amount of plastic products are consumed over the chosen period of time, and to establish how effective they are at eliminating

Purpose for further research While bans have been signed into law and several groups and coalitions have arisen to advocate continued research into the adverse effects microplastics, there is still thousands of tons of micro-bead pollution present in aquatic reservoirs such as the Great Lakes. Such a mass of plastics, which are able to migrate with currents to new locations and settle into the sea floor, has left researchers and environmentalists alike unsure of how to resolve their current

Flak Jacket Kevlar High-Performance Polyethylene (HPPE) Advanced/Future Body Armor Body armor has come a long way since the days of chain mail. As advanced technologies allow for lighter and more flexible protection, soldiers do not have to sacrifice range of motion or vision for safety. Body armor has also evolved according to the changes in ammunition. As ammunition becomes more lethal, body armor must follow suit in order to protect the combatant. World War Two's most famous contributions

Polymer is a compound consisting of long-chain molecules, each molecule made up of repeating unit connected together by a covalent bond. Most polymers are based on carbon and are therefore considered organic chemicals. Groover (2011) suggests that ?the word polymer is derived from Greek, poly and meros, meaning many and parts, respectively. Some scientists prefer to use the word macromolecules or large molecules, instead of polymer?. The polymers are created by connecting many small molecules forms

are Galvanised Iron Fibre (GIF), High Density Polyethylene Fibre (HDPEF). The cement-sand slurry used is of the proportion 1:2 with a water cement ratio 0.6. The percentage of fibres (by volume fraction) used in the experimentation is 6 % for mono fibres. Key words:SIFCON, FLY ASH, GI FIBRE, HDPE FIBRE and STRENGTH PARAMETERS. INTRODUCTION Nowadays, we talk much about high performance concrete. It has higher strength, better durability and elasticity. Although high strength concrete is often considered

with a triangular ‘chasing arrow’ symbol with a number inside as pictured in figure 2, in the appendix. The first plastic is PET/PETE, Polyethylene Terephthalate. PET is used in most water and soda bottles and also in some packaging. PET is susceptible to leaching and bacterial growth, so it should not be reused, but it is easily be recycled. High-Density Polyethylene, HDPE, is a stiff plastic that is often used to make products such as milk jugs, oil bottles, toys, and plastic bags. HDPE is also very

In 2014, 311 million tonnes of plastic were produced (Detloff & Istel 2016), and half was disposed of within the year (Singh & Sharma 2016). The most commonly used and plentiful polymers are: high-density polyethylene, low-density polyethylene, polyvinyl chloride, polystyrene, polypropylene and polyethylene terephthalate (Andray & Neal 2009 as cited in Li, Tse and Fok 2016). These polymers account for 90% of total plastic production, and as a result are the most common plastics found in aquatic environments

the earth four times and 50% of the plastic we use, we only use once and is thrown away. There is initiate ways for plastic bottles to be reused in a scientific way. We are investigating how the air pressure we can create in a bottle will affect how high or low it travels. In the process we will be reusing plastic bottles. Will the product inside of the bottle be significant to the explosion it will make? If a certain amount of alcohol is inserted in the bottle will the rocket malfunction? Materials: