Brittleness is that the plastic part is easily cracked or broken in some place Causes: (1) Dry conditions are not suitable; use excessive recycled materials (2) Injection temperature setting is wrong (3) The gate and runner system settings are not appropriate (4) The melting mark strength is not high Remedies: Material: (1) Set appropriate drying …
Air traps are where air is trapped in the cavity to create bubbles in the part during plastic injection molding. Causes: It is caused by the air being unable to escape from the parting surface, the ram, or the vent when the two melt fronts meet. Remedies: Structural design: Reduce thickness inconsistency and try to …
Short shots are a phenomenon in which the mold cavity cannot be completely filled. Plastic Injection Molding-Short ShotsCauses: (1) Die temperature, material temperature, or injection pressure and speed are too low (2) Uneven plasticization of raw materials (3) Poor exhaust (4) Insufficient liquidity of raw materials (5) The part is too thin or the gate …
The process involved many steps until a final prototype or product is fabricated. The first step in prototyping of plastic injection molded parts is design of part. In initial phase you have to determine the feasibility of product and its production and nothing to do with size of product. After working on product design now …
Injection molding is ideal for making precise silicone rubber parts from LSR. It offers parts with accurate dimensions, intricate design, and superior surface finishes. Below is a step-wise breakdown of the process. Step 1: Material PreparationLSR material is a two-part platinum-cured elastomer containing a base silicone polymer and a curing medium. These components are combined …
Liquid Silicone Rubber Molding Process: Step by Step Read More »
Different production volumes are also an essential factor in the cost of injection molding. Moreover, the production volume influences the amount of raw material used in injection molding, required machine sophistication, and injection mold properties such as durability, strength, and other properties. Here are the typical types of production volume injection molding: Low-Volume Injection Molding …
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Generally, the injection molding process has no fixed cost for every application. Custom injection molding cost has a varying value that ranges from thousands to hundreds of thousands. Below are common factors that impact the cost of injection molding. CNC MachiningThe CNC machining process is well-suited for making metal molds from aluminum or steel materials. …
Cooling is a critical phase in plastic injection molding, directly influencing production efficiency, product quality, and cost-effectiveness. Accounting for 60–75% of the total molding cycle, its optimization is pivotal for manufacturers aiming to balance speed and precision. In conclusion, cooling is the linchpin of injection molding success. It bridges productivity, quality, and sustainability, making its …
Why is Cooling So Important for Plastic Injection Molding Read More »
What is rotational molding?Rotational molding also uses a mold tool, consisting of a core side and a cavity side. However, the manufacturing process is quite different from injection molding. The plastic powder is first poured into the cavity of the mold, and then the mold is placed in an oven. While being heated, the mold …
To determine how much force the platen must hold, the process engineer will calculate using the following parameters: The area of the finished part’s footprint.The flow length, which is the distance from the gate of the mold to the furthest edge of the part.The average wall thickness of the part.The number of cavities in the …
