plastic injection molding knowledge - Page 2 of 41

Analysis Of The Causes Of Shrinkage And Depression Of Injection Molded Products

13/01/2023

Analysis of the causes of shrinkage and depression of injection molded products In the process of injection molding, shrinkage and depression of products is a relatively common phenomenon. The main reasons for this situation are. 1. Machine aspect. (1) the injection nozzle hole is too large to cause shrinkage due to reflux of molten material, too small resistance to the amount of material is not enough to appear shrinkage. (2) Insufficient clamping force will also

Analysis Of Color Stripes And Color Lines Of Injection Molded Products

13/01/2023

Analysis of color stripes and color lines of injection molded products Although the color masterbatch coloring is better than dry powder coloring and dyeing paste coloring in terms of color stability, color purity and color migration, the distribution, i.e., color particles in diluted plastic in the mixing uniformity is relatively poor, and the finished products naturally have regional color differences. Main solutions. (1) increase the temperature of the filling section, especially the temperature of the

Analysis Of The Causes Of Bubbles And Warpage Deformation Of Injection Molded Products

13/01/2023

Analysis of the causes of bubbles and warpage deformation of injection molded products The gas bubble (vacuum bubble) is very thin and belongs to the vacuum bubble. Generally speaking, if the bubble is found at the moment of mold opening, it is a gas interference problem. The formation of vacuum bubble is due to insufficient filling into the plastic or low pressure. Under the effect of rapid cooling of the mold, the fuel pulling with

Analysis Of The Causes Of Cracking Of Injection Molded Products

13/01/2023

Analysis of the causes of cracking of injection molded products Cracking, including the surface of the parts filamentary cracks, micro-crack, top white, cracking and caused by the parts sticky mold, runner sticky mold or trauma crisis, according to the cracking time divided into demold cracking and application cracking. There are mainly caused by the following aspects. Processing. (1) processing pressure is too large, too fast, the more material filling, injection, holding pressure time is too

What Are Injection Molding, Stamping, Cold Punching And Deep Drawing Molds

13/01/2023

What are injection molding, stamping, cold punching and deep drawing molds I. Injection Mold Injection molding is a special kind of plastic parts, it is a process of injection molding various polymer materials (such as ABS, PP, PVC, PS and PMMA, etc.) through the injection molding process, and then cooling off the mold and get the product. Injection molding has the advantages of high production efficiency and can reduce the use of raw materials; injection

What Are The Parts Of Injection Moulds?

13/01/2023

Engaged in injection molding industry for more than ten years, but also just know a little skin, a pair of molds from product development to 3D printing verification, from mold design, to processing and manufacturing, and then to injection molding production, assembly into finished products, which involves a very wide range of types, of course, now most companies are refined, generally each of us are engaged in a small area, but even if the division

The 5 Major Effects Of Mold Temperature On Injection Molded Parts

13/01/2023

, blow molding, extrusion, die-casting or forging molding, smelting, stamping and other methods. In short, the mold is used to make the tool of molding items, this tool consists of various parts, different mold consists of different parts. It mainly realizes the processing of the shape of the article through the change of the physical state of the material being molded. 1 Effect of mold temperature on product appearance Higher temperatures improve the flow

What Are The Characteristics Of The Appearance Design Of Injection Moulds?

13/01/2023

What are the characteristics of the appearance design of injection moulds? Appearance design can leave a deep impression, consumers can’t see the internal quality of the product, but they can observe whether the product’s appearance design is smooth and the process quality is good, and then do a good job of overall accurate positioning of the product, such as appearance design is not standard, it may lead to the injection mold completely scrapped, so be

What Are The Types Of Injection Molding Of Two-shot Injection Molding Machine?

13/01/2023

Two-shot injection molding machine is a kind of double-barrel, two-material injection molding machine with two-shot mold, which can remove different colors or different material products. For single-color injection molding machine, it saves the complicated process of secondary processing and improves the production efficiency. So, what are the types of injection molding of two-shot injection molding machine? 1、Sliding injection. After pre-injection of Two-shot injection molding machine equipment, the mold and slider remain closed. The injector

Key Points Of Automobile Drawing Die Design

12/01/2023

Key points of automobile drawing die design 1. arrangement of adjusting pads arrangement of adjusting pads The arrangement of adjusting pad is close to the pressing surface, one per 300~400 300~400 for each adjusting pad arrangement close to the pressing surface. Adjusting pad corresponding position, the lower die set pier dead block; adjusting pad corresponding position, the lower die set pier dead block. Adjustment pad, pier dead block, the corresponding position of the top bar

Several Trends In The Development Of Automotive Mold Technology

12/01/2023

Several trends in the development of automotive mold technology Mould is the basic process equipment of automobile industry, more than 90% of the parts in automobile production need to rely on mould forming. Manufacturing an ordinary car needs about 1500 sets of molds, stamping molds account for about 1000 sets. In the development of new models, 90% of the workload is around the change of body type. In the development cost of new models, about

How To Choose The Tpe For Two-Color Injection Molding?

12/01/2023

How to choose the TPE for two-color injection molding? In the field of plastic processing, some plastic products, for functional and aesthetic considerations, the whole product needs two or more plastic materials to go with. The matching of plastic materials can be done by processing different plastic parts separately and then assembling them together, or by using injection molding to complete the combination of different material parts, which we call dual-material and multi-material injection molding.

Considerations, Advantages And Disadvantages Of Micro Injection Molding

12/01/2023

Considerations, advantages and disadvantages of micro injection molding Micro injection molding refers to the injection molding of products with small volume or very high tolerance requirements and tiny overall feature structure. With the development of technology, it has been applied in various fields such as optical communication, computer data storage, medical technology, biotechnology and watch cameras, high-precision gears, medical sensors, etc. A, micro injection mold design should pay attention to the following. Heat insulation and

Problems To Be Noted In Tpe Overmolding And Injection Molding

12/01/2023

Problems to be noted in TPE overmolding and injection molding TPE is a composite functional material modified with SEBS, TPE elastomer soft rubber has excellent comprehensive performance and is the most commonly used soft rubber material for secondary injection molding, overmolding and two-color injection molding. So what are the considerations for TPE overmolding and injection molding? TPE overmolding injection molding issues need to be noted as follows. 1, TPE and hard rubber components need to

What Are The Types Of Tpe Overmolding?

12/01/2023

What are the types of TPE overmolding? When it comes to TPE overmolding, as the name implies, it is the TPE soft rubber material overmolded to other materials. TPE is soft and coated on the outside of the hard rubber material to make it feel comfortable and not sticky. In addition, it has some anti-slip properties, which improves the grip performance. It is suitable for making various handles, grips and grippers, such as golf club

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