In plastic injection molding, hot runner molds and cold runner molds refer to two different types of runner systems used to deliver molten plastic into the mold cavities. Here's a complete comparison to help you understand their differences, advantages, disadvantages, and application scenarios: 1.
In plastic injection molding, the gate is the entry point through which molten plastic flows into the mold cavity. The design and location of the gate significantly impact part quality, cycle time, and mold performance. Here are the main types of gates used in injection molding: 1. Edge Gate (Side
Selecting the right mold steel is critical for ensuring the quality, durability, and cost-effectiveness of plastic injection molds. Here are three basic principles to guide mold steel selection:1. Match Steel Properties to Product RequirementsThe steel's mechanical and physical properties must align
A DFM Report (Design for Manufacturability Report) is a technical evaluation document created during the early stages of a mold project. It assesses whether a part design is suitable for injection molding, and recommends changes that will improve manufacturability, reduce cost, and prevent productio
Moldflow Analysis is a computer-aided engineering (CAE) simulation tool used in plastic injection molding to predict how molten plastic will behave as it flows into and through a mold cavity.It’s part of a broader family of injection molding simulation software (like Autodesk Moldflow, Moldex3D, and
PET (Polyethylene Terephthalate) is a thermoplastic polymer from the polyester family. It's known for its strength, clarity, chemical resistance, and excellent recyclability. PET can be used in both amorphous (transparent) and semi-crystalline (opaque) forms, depending on how it's processed. Key P
TPU is a class of thermoplastic elastomers (TPEs), offering a unique balance of elasticity, transparency, and resistance to abrasion, oils, and chemicals.Types of TPU:Polyether-based TPU: Better hydrolysis resistance (good for water exposure)Polyester-based TPU: Higher mechanical strength and oil re
PVC is a versatile thermoplastic available in two main forms:Rigid PVC (uPVC): Hard, durable, and used in construction.Flexible PVC: Plasticized for flexibility, used in cables, hoses, etc.PVC is widely used because it’s:Flame-retardant (self-extinguishing)Resistant to water, chemicals, and corrosio
PE injection molding is the process of heating and injecting molten polyethylene into a mold cavity to produce a finished part. This process is used for manufacturing everything from consumer products to industrial components.Key Steps:Melting: PE pellets are heated to ~180–280°C depending on the ty
Polypropylene (PP) is a semi-crystalline thermoplastic polymer known for its low density, chemical resistance, and excellent fatigue life. It's widely used in injection molding due to its ease of processing and cost-effectiveness.PP is made from the polymerization of propylene monomers and exists in
