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Guide for Injection Mold Design

By |2020-07-08T01:00:12+00:00July 8th, 2020|For all, plastic industry|

There are many important factors that will affect the design of injection mold. Therefore, we should take them all into account before the injection mold design. Analysis of finished plastic product drawings and real samples. At this point we have to consider the factors like geometry, size, technical requirements, appearance, tolerance and design

Q &A about the injection molding process, do you know the answer?

By |2020-07-08T03:55:44+00:00July 6th, 2020|For all, plastic industry|

Do you think yourself know a lot about the injection molding process? Let's have a test to check if that's true. Briefly describe the working status of the check valve during the process of plasticization, injection and pressure holding Plasticizing: open Injection: close Holding pressure: close Briefly describe the relationship between

How to prevent coating flaking of injection molded products?

By |2020-07-08T03:40:54+00:00July 3rd, 2020|For all, plastic industry|

In our daily life, it's common to see the coatings of plastic products flake off. Now, Let's find out what are the causes and how to avoid such a problem. Causes of flaking coating lSilver streak on the product lPoor paint and improper coating method Related knowledge The release agent is used for the small

Preparations Before Injection Molding

By |2020-07-08T03:28:25+00:00July 1st, 2020|For all, plastic industry|

In this article, we will discuss the preparations before injection molding.  So the following steps are indispensable for the quality of injection molded products. Inspection of raw materials Check whether the packaging, particle shape and size, appearance color of plastic raw materials are the same as the type and model of the material demand

Parting-line Flash: Guide for Avoiding

By |2020-06-29T02:25:22+00:00June 29th, 2020|For all, plastic industry|

Phenomenon A phenomenon in which the resin squeezes out and solidifies on the parting line of the mold. Cause There is a gap in the mold Foreign matter is attached between the mold plates Rising internal pressure(insufficient vent) High injection pressure Insufficient mold clamping force Large material supply High resin temperature Long injection pressure

Sink Marks: Tips For Solving The Problem

By |2020-06-24T00:29:16+00:00June 24th, 2020|For all, plastic industry|

Phenomenon The phenomenon that the surface of a molded product is dented due to shrinkage. It is often found in thick molded products. Cause Small gates, sprues and runners Poor gate position Insufficient cooling time Overly high or low mold temperature Low injection/holding pressure Short injection/holding time 3. Measures (1) Measures related to

The Use of Cable Tie : Most Comprehensive Collection (2020)

By |2020-07-17T09:49:19+00:00June 22nd, 2020|For all, plastic industry|

Speaking of cable tie, you may think it far away from our daily life, because it’s generally used in mechanical and eletrical products and industry. But if you get to know enough about it, you may fall in love with it. I will tell you why. Now, let’s explore the wonderful and magical world

How to deal with the warpage in injection molding?

By |2020-06-19T01:16:04+00:00June 19th, 2020|For all, plastic industry|

Phenomenon A phenomenon in which a molded product warps in a convex or a concave shape immediately after molding. Cause Unbalanced protrusion of molded products Bad mold release Uneven cooling Big gate Stick out quickly High injection pressure, high injection speed Short injection/holding time 3. Measures Prolong mold cooling time and balance mold

What are the causes of silver streaks in injection molding?

By |2020-07-22T01:18:27+00:00June 17th, 2020|For all, plastic industry|

Phenomenon A phenomenon in which silver streaks occur on the surface of a molded product. Cause Poor air release (gas release) Overly small gates, runners, and sprues Insufficient degassing of the mold Small slug well A lot of water adsorbed on the resin Insufficient injection pressure Overly low mold temperature High cylinder temperature Fast

How to avoid short shot in plastic products?

By |2020-07-08T02:38:04+00:00June 15th, 2020|For all, plastic industry|

Phenomenon An incomplete phenomenon in which the resin is not completely filled. And this is called short shot. Cause Overly runner/gate diameter Long runner Large flow resistance in cavity Poor degassing of sprue and runner Insufficient air escape in the mold Lack of supply Insufficient injection pressure Slow filling speed Low resin temperature Low

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