Plastic hangers are primarily made using ABS plastic molding. ABS, which stands for acrylonitrile butadiene styrene copolymer, is known for its excellent mechanical properties and impact resistance, making it an ideal material for manufacturing durable and reliable hangers. This material's robustness ensures that plastic hangers can withstand regular use without easily breaking or deforming.
Plastic hangers come in two main shapes, each designed for specific uses and types of clothing:
- Flat and Long Frame: This type of hanger features a flat and elongated body with a relatively narrow cross-section at the shoulders. The inclination slope of the frame is minimal, resulting in a lightweight and thin design. These hangers are particularly suitable for drying and storing lightweight clothing items such as t-shirts, blouses, and dresses. Their slim profile allows for efficient use of closet space and ensures that delicate fabrics do not stretch or lose shape.
- Wide and Short Frame: In contrast, this type of hanger has a broader and shorter frame with a significant slope at the shoulders. The width and thickness of the frame make it seamless and robust, ideal for hanging heavier garments such as coats, suits, and jackets. These hangers are designed to provide maximum support, ensuring that heavier clothes maintain their form and are securely held in place, even when subjected to the weight of the fabric and outdoor conditions.
Plastic hangers are manufactured using a variety of raw materials, including PP (polypropylene), PS (polystyrene), KR, and ABS. These materials are chosen for their specific properties that contribute to the durability, flexibility, and strength of the hangers.
The manufacturing process of plastic hangers involves several key steps:
- Preparation Before Molding: This initial step involves preparing the mold and ensuring that all equipment is in optimal condition. The mold's design is crucial as it determines the final shape and quality of the hanger.
- Feeding: Raw materials are fed into the molding machine. Precise control of the material feed ensures consistency in the quality and properties of the finished product.
- Plasticization: The fed materials are heated to a molten state, a process known as plasticization. Maintaining a consistent temperature and pressure during this stage is critical to achieving a uniform melt.
- Mold Filling: The molten plastic is injected into the mold. The mold's shape and dimensions define the hanger's final form, ensuring that it meets specific design and functionality requirements.
- Pressure Holding: After the mold is filled, pressure is maintained to compensate for material shrinkage during cooling. This step ensures the density and structural integrity of the hanger.
- Reverse Flow: To prevent the molten plastic from flowing backward, precise control of the mold's pressure and temperature is necessary. This step is crucial for achieving the desired quality and consistency in the final product.
- Cooling: The plastic is allowed to cool and solidify within the mold. The cooling time must be carefully controlled to ensure the hanger retains its intended shape and strength.
- Demolding: Once the plastic has sufficiently cooled and hardened, the finished hanger is removed from the mold. The hanger may then undergo additional finishing processes, such as trimming excess material and quality inspection, to ensure it meets all standards and specifications.
This comprehensive molding process is not only used for making plastic hangers but also applies to the production of a wide range of plastic products. By selecting appropriate raw materials and optimizing each step of the manufacturing process, manufacturers can produce high-quality plastic hangers that meet diverse consumer needs and preferences.