Plastic objects are almost everywhere, from food wrappers, electronic equipment, cars, motorcycles, household appliances and so on. To form such plastics every type of plastic form and material affects the process and its manufacture technology. Aside from that, you might also need to check out the excellent mould supplier near your area.
History of Plastic Injection
Around 1800s plastic technology began to develop, in 1968 John Wesley Hyatt made a billiard ball by injecting celluloid into mold, in 1872 – John and Isaiah Hyatt patented injection molding machines for the first time, then a plastic industry association in the form of in 1937, which continued the establishment of a plastic engineering association in 1941
Plastics are all organic synthetic materials that turn plastic after heating and can be formed under the influence of pressure.
Currently, the use of plastic materials as packaging is common. This is because some advantages such as lightweight, practical, can be color, and cheap if produced in large quantities. As a function of packaging, plastic has its own charm on packaged products. This condition because people can directly see the contents, can help maintain the integrity of the form of contents and of course the cost is cheap. Some examples of plastic packaging that is packaged in the form of tray and blister. Blisters are widely used in medicine and some types of candies. For the tray more widely used for dry food. For the manufacture of thermoforming methods used with vacuum forming system. The material used is plastic sheets.
In this process, the heated sheet is then formed according to the mold with the aid of pressure. The formation process is affected by several parameters such as temperature, heating, holding time and pressure.
Judging by its nature, the plastics are divided into thermoplastics and thermosets. The thermoplastic has properties if it is heated to become plastic and if kept heated to a temperature greater than 200 º C can melt. When the temperature is then lowered (cooled) the plastic material will harden and can be reshaped. While the thermoset after being processed into a product can not be returned as its original shape.