Why we need a strong quality control process in plastic injection molding | Szmolding.com
In any industry, quality control is considered one of the most important aspects of the processes. Especially in plastic part manufacturing, no matter how seamless your processes are or how efficient the plastic injection molds are, there will always be a few times when things will not go your way.
This is the purpose of injection molding quality control. It allows you to control how the product is produced before releasing it to customers. In this way, you can ensure that your customers are 100% satisfied in terms of products.
What kind of common defects do you need to watch out for during the quality control process?
The black scorched spots on the edge and surface of the part are called burn marks. These burn marks are typically caused by overheating and overheating of trapped air sneaks in during injection
The color of some plastic parts may be different from the originally expected color. This happens when the masterbatch is not perfectly blended or mixed. In most cases, the discoloration is not serious at all.
Sometimes, excess material will be discharged with the product. These excess plastic parts are called flash. This is usually the easiest defect to fix after production.
Flow marks are a result of distorted areas within the mold leaving evident signs on the plastic product’s surface. Although it will not affect the function of the mold, it will affect the aesthetics of the product.
Air pockets in the part are known as bubbles or voids. Although they can usually be seen on the surface of the part, sometimes they are hidden and can weaken the structure of the part. These defects are also caused by air trapping inside the mold. The air slips in when the material shrinks, the injection pressure is too low, or the cooling rate of the part decreases.
Depressed and uneven surfaces are called sink marks. Similar to other defects, sink marks are caused by uneven cooling and shrinkage of molten plastic. The cause of the sink mark may vary depending on the material, design, or process used. For example, whenever the wall thickness changes, the thicker parts cool more slowly. These differences in thickness and temperature cause material to pull slightly inward, causing a depression.
When you have a solid injection molding quality control process, these defects can be easily caught the moment they happen. This means that you have the chance to rectify the situation and avoid further waste of materials and added costs. Let your quality control go, and you might end up with batches of products that you will not be able to sell. And should these defective products reach the hands of clients, you immediately lose their trust.
Ensure your reputation as a manufacturer by establishing a strong quality control team.
Make your quality control process seamless, and ultimately not only meet your requirements but also exceed customer expectations after delivering the product.
SZOMK has over 10 years of experience in quality injection molding, these have allowed us to establish a complete quality control system and we have a professional team responsible for it. We believe our standards are what set us apart, If you still have related questions, you can leave a message on the right corner bottom or contact us here.
评论
发表评论