What Is a Plastic Case?
A plastic case is made of resin, commonly known as plastic. These cases utilize various materials such as polypropylene, polystyrene, PET, and acrylic, offering a wide selection of container sizes and thicknesses. The case’s durability and weight depend on the material, thickness, and size. It’s essential to select a case that suits the intended use.
Generally, plastic cases are lighter and more affordable than other types of cases. They serve diverse purposes, from home storage solutions like wardrobe boxes to product storage in factories and sample containment in laboratories.
Uses of Plastic Cases
1. General Household
For general household use, lightweight and transparent plastic cases, such as wardrobe boxes, are prevalent.
2. Manufacturing Sites
Manufacturing sites employ thick and durable plastic cases for product storage and as returnable containers.
3. Specialty Applications
The application of plastic cases varies widely. For instance, waterproof and dustproof cases protect communication devices and breakers, while chemical-resistant cases are ideal for laboratories prone to chemical exposure. Additionally, these cases are utilized for transporting sensitive items like semiconductors and silicon substrates.
Characteristics of Plastic Cases
Due to the inherent electrical charge in plastics, plastic cases are prone to static electricity buildup. This makes them unsuitable for storing static-sensitive items such as electronic devices and semiconductors. Conductive cases are recommended for storing or transporting these products.
To prevent dust and dirt from adhering to the case, consider using cases with locking lids, especially in environments where cleanliness is paramount.
Types of Plastic Cases
1. ABS Resin
ABS resin, a copolymer of three monomers, is known for its exceptional impact resistance and suitability for protecting contents from external shocks. Its high abrasion resistance ensures durability, even with frequent use. Although somewhat less resistant to weathering, ABS resin’s durability can be enhanced through painting or coating. It finds widespread application in household goods, electronic device cases, and automotive parts.
2. PC Resin
PC resin, notable for its high transparency and weather resistance, is comparable to glass. This makes it ideal for optical equipment, lighting fixtures, protective smartphone cases, and tablet screen protectors. PC resin’s heat and chemical resistance further extend its use to durable industrial products and automotive parts. Despite its high quality, PC resin’s cost may necessitate comparison with other materials when budget is a consideration.
3. PP Resin
PP resin is lightweight and boasts excellent chemical resistance, heat resistance, and electrical insulation, making it ideal for chemical containers, electronic component cases, and automotive interior parts. Its low cost and ease of processing make PP resin suitable for mass production. Additionally, its high recyclability highlights its environmental friendliness, although it may not be the best choice for high-temperature environments.
4. PE Resin
PE resin is flexible, durable, and exceptionally lightweight, widely used in outdoor equipment, sports gear, and military cases. Its excellent cold resistance ensures functionality in low-temperature conditions. Chemically stable and resistant, PE resin is also highly water-resistant, ideal for overseas transport and adverse weather conditions. However, prolonged outdoor exposure can lead to degradation from ultraviolet rays, warranting caution.
Additional Information on Plastic Cases
Material Considerations
Plastic cases, known for their lightweight and portability, come in various sizes and thicknesses for diverse applications. The choice of materials, including polypropylene, polystyrene, PET, and acrylic, affects the case’s durability, load resistance, and weather resistance. Selection should be based on the specific application needs. Notably, plastic cases generally do not resist organic solvents well. For environments with potential chemical contact, selecting a case made from highly chemical-resistant material, such as fluorinated resin, is crucial.