Mirco Blog

Mold lifing safety issue

I think safety must be a primary consideration of the mold designer, how can a mold, or any heavy mold part, handled safely? No person should repeatedly lift parts heavier than 20kg or any part which is awkward to handle, regardless of weight, without some mechanical assistance, such as a hoist. […]

By |July 5th, 2016|Mirco Blog|0 Comments

How to avoid getting hurt when handling a mold or mold part

There are four situations during which part or all of the molds is handled […]

By |July 5th, 2016|Mirco Blog|0 Comments

Optimize mold design to avoid shrink mark

Properly increase section dimension of gate and runner; the position of gate is set at thick walls of the plastic parts and should be as symmetric as possible; improve mold exhausting condition; set cold-slug well with sufficient capacity to avoid cold material’s entering into the cavity and influencing filling and shrinkage compensation; […]

By |October 13th, 2015|Mirco Blog|0 Comments

Optimize injection technics to avoid shrink mark

Properly improve injection and dwell pressure as well as the injection rate to increase melt’s compression tightness; prolong time of injection and dwell( the freezing of gate should not occur too early) to realize sufficient shrinkage compensation; […]

By |October 13th, 2015|Mirco Blog|0 Comments

Optimize prescription of plastics to avoid shrink mark

Optimize prescription of plastics and prefer use resins with low shrinkage; reduce dosage of recycled materials; dry the material as much as possible; […]

By |October 13th, 2015|Mirco Blog|0 Comments

Optimize the structural design of injection products to avoid shrink mark

The injection products should not be too thick and when necessary the stiffening rid can be added to reduce wall thickness; the wall thickness must be kept as uniform as possible and the shape and structure should be simple and symmetric; […]

By |September 29th, 2015|Mirco Blog|2 Comments

Introduction to shrink mark and shrinkage porosity

Both the shrink mark and shrinkage porosity are defects of injection products due to the molding shrinkage at thick walls where no sufficient follow-up compensation is made. During the injection process, the surface layer of products often condenses first, followed by the center layer, which will cause sinking on the surface of parts with thick walls, thereby producing obvious inner concave is called shrink mark and the large concave is called depression; […]

By |September 29th, 2015|Mirco Blog|1 Comment

what is welding mark?

as an injection molding engineer, he should be very familiar with welding mark, the thread mark formed at the front confluence of two or more melt flows in the cavity is called welding mark or welding line. […]

By |September 9th, 2015|Mirco Blog|0 Comments

How to treating welding mark in injection molding, mold design and product design

In actual engineering practice, commonly-used methods for treating welding mark include: […]

By |September 9th, 2015|Mirco Blog|0 Comments

Adverse factors of plastic material and injection mold affect injection filling

Adverse factors of plastic material and injection mold are in the following: […]

By |August 3rd, 2015|Mirco Blog|0 Comments