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Vietnamese The structure of custom injection molds primarily consists of two main parts: the cavity (female mold) and the core (male mold).
- The cavity includes components such as the cavity combination base plate, cavity assembly, and cavity combination clamping plate, which together create a variable cavity.
- The core comprises the core combination base plate, core assembly, core combination clamping plate, cavity cutoff components, and side cutoff combination plate, providing the functionality of a variable core.
To enhance plastic performance, various auxiliary materials are commonly added to polymers, including fillers, plasticizers, lubricants, stabilizers, and colorants, ensuring optimal plastic properties.
Synthetic Resin: Synthetic resin is the primary component of plastic, typically constituting 40% to 100% of its composition. Given its high content and its impact on plastic properties, resin is often considered synonymous with plastic. However, resin and plastic are not entirely the same; resin is the raw polymer before processing and is widely used in the production of plastics, coatings, adhesives, and synthetic fibers. Most plastics require the addition of other substances besides resin as the main ingredient.
Fillers: Fillers (or reinforcing agents) are used to enhance the strength and heat resistance of plastics while also reducing production costs. For example, adding wood flour to phenolic resin significantly reduces costs, making it an economical plastic option, while also improving mechanical strength. Fillers can be divided into organic fillers (such as wood flour, shredded cloth, paper, and various textile fibers) and inorganic fillers (such as glass fiber, diatomaceous earth, asbestos, and carbon black).
Plasticizers: Plasticizers increase the plasticity and flexibility of plastics, reduce brittleness, and make the material easier to process and mold. Plasticizers are generally high-boiling organic compounds compatible with resin, usually non-toxic, odorless, and stable under light and heat. Common plasticizers include phthalates. For instance, in the production of PVC plastic, adding a high amount of plasticizer results in soft PVC, while adding little to no plasticizer (usage <10%) produces rigid PVC.
DAYIN Plastics Products Co., Ltd. has specialized in mold manufacturing for 30 years. As a professional mold-opening and injection molding contract manufacturer, DAYIN offers comprehensive OEM/ODM services. The company excels in optimizing product structures to reduce mold-opening and injection costs, with a complete design and manufacturing team providing high-quality product design services. Additionally, DAYIN is equipped with advanced mold processing equipment and extensive mold-making experience, offering a range of plastic product manufacturing services. The company operates a 50,000-square-meter production base, with 30 years of mold development experience, over 50 R&D personnel, and more than 100 injection molding machines.