Pollution and Maintenance | Hydraulic System of Injection Molding Machine

Hydraulic system

Pollution and Maintenance | Hydraulic System of Injection Molding Machine Factors affecting the quality of hydraulic system of injection molding machine The decisive factors for the quality of the hydraulic system of injection molding machine: Rationality of the system design Performance of the system components Maintenance and solutions for the pollution of the system. The … Read more

30 Common Problems and Solutions in the Injection Molding Process

vickers-valve

30 Common Problems and Solutions in the Injection Molding Process Problems and solutions in the injection molding process This article will tell you some common problems in the injection molding process and also the corresponding solutions. 1. The product runs off the edge (flash edge)when being turned on. The reason and solution of the product … Read more

How to Solve the Burnt Injection Parts?

injection-parts-1

How to Solve the Burnt Injection Parts? Causes and solutions of the burnt injection parts For some reasons, injection molds often get burnt during the production. With different  causes of the burnt injection parts like machinery, mold or molding conditions, the solutions adopted are also different.  1.  Machinery for example: For the overheating of barrel … Read more

What Problems Should Be Paid Attention to When Producing PC Products?

polycarbonate

What Problems Should Be Paid Attention to When Producing PC Products? Notes for producing PC products Raw material drying PC plastics, even touching a bit of water, the situation of bonds broken for hydrolysis, lower molecular weight and lower physical strength will occur. Therefore, before molding, the moisture of polycarbonate should be strictly controlled below 0.02% … Read more

How to Avoid the Serious Shrinkage Problem During Injection Process?

injection-molding

Why Can’t Overly Quick Glue Injection Help Solve the Problem of Serious Shrinkage? The relation between the glue injection and the shrinkage To avoid the shrinkage, the first thing we think is to increase the injection pressure and extend the injection time. But if the injection speed has been adjusted very quickly, it is not … Read more

8 Points for Attention in PET Preforms Molding

PET preform

8 Points for Attention in PET Preforms Molding Notes for PET preforms molding 1. Resin processing PET macromolecules contain lipid groups and have a certain degree of hydrophilicity. Pellets are sensitive to water at high temperatures. When the moisture content exceeds the limit, the molecular weight of PET decreases and the products are colored and … Read more

How Would the Weld Line Occur ?

weld line

How Would the Weld Line Occur ? About the weld line This article has showed the  phenomenon, causes and solutions of the weld line occuring in the prossess of injection molding. 1. Phenomenon Materials flow in two or more directions. When they join again, the resin temperature drops and they don’t fuse, which results in … Read more

How to Avoid Short Shot in Plastic Products?

short shot

How to Avoid Short Shot in Plastic Products? About the short shot 1. Phenomenon of short shot An incomplete phenomenon in which the resin is not completely filled. And this is called short shot. 2. Causes of short shot Overly runner/gate diameter Long runner Large flow resistance in cavity Poor degassing of sprue and runner … Read more

How to Deal with the Warpage in Injection Molding?

warped-plastic

How to Deal with the Warpage in Injection Molding? About the warpage 1. Phenomenon of warpage A phenomenon in which a molded product warps in a convex or a concave shape immediately after molding. 2. Causes of warpage Unbalanced protrusion of molded products Bad mold release Uneven cooling Big gate Stick out quickly High injection pressure, high … Read more

Sink Marks: Tips For Solving The Problem

Sink-Marks

Sink Marks: Tips For Solving The Problem About the sink marks 1. Phenomenon of sink marks The phenomenon that the surface of a molded product is dented due to shrinkage. It is often found in thick molded products. 2. Causes of sink marks Small gates, sprues and runners Poor gate position Insufficient cooling time Overly … Read more

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