Ms. Jenny Wang
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Zhejiang Ceeto Mold Co.,Ltd.
PVC is a heat-sensitive material, and its injection molding process is poor, because it is easy to decompose PVC by too high melting temperature or too long heating time, so controlling the melting temperature is the key to injection PVC products. The heat source of melting PVC raw materials comes from two aspects, that is, the shear heat of the plastic generated by the screw movement and the heating of the resistance wire on the outer wall of the barrel, which is mainly the shear heat of the...
Hot runner technology is an advanced technology applied to the pouring runner system for plastic injection mold assembly use, and it is a hot direction in the development of plastic injection molding technology. The so-called hot runner molding means that the plastic sent from the injection machine nozzle to the gate is always in a molten state, and does not need to be cured as a waste at each mold opening, and the molten material remaining in the pouring system can be injected into the cavity...
When there are multiple inserts in the design of plastic injection molds, if you want to line them to cut by EDM machining, you usually line up multiple pieces of material together and then line cut by EDM works. The following are some points to pay attention to according to the situation of our factory Zhejiang Ceeto Mold Co.,Ltd.: 1. Do not exceed 200*200 for the placement material, convenient line cutting operation; 2. Distinguish between quenching material and soft material; 3. Is there any...
Zhejiang Ceeto Mold Co.,Ltd has rich experience in design and assembly of plastic injection molds in high level. Method for determining fit clearance and form and position tolerance of guide column and guide sleeve. In the specific design of the guide column guide sleeve, its ideas and methods are as follows: 1, according to the shape of the workpiece, the way of discharge and the situation of the press, first determine the layout of the guide column; 2, according to the change of the punching...
Zhejiang Ceeto Mold Co.,Ltd. have skilled plastic injection molds designers, let us show you how to design the gate or runners. The gate, also known as the feed gate, is a short short runner connecting the diverter and the cavity (except for the direct gate), which is a key part of the pouring system. Its main functions are: After the cavity is filled, the melt first condenses at the gate to prevent its backflow. ② Easy to remove the condensate of the pouring system at the gate. The...
Here as you know that drilling machines are used to drill all kinds of holes on plastic injection molds, now the most imporant point is how to drill holes on chamfer surface on plastic injection molds. Zhejiang Ceeto Mold Co.,Ltd. has over ten years experience in gun drilling manufacturing to plastic injection molds. Solutions are as follows from Zhejiang Ceeto Mold Co.,Ltd.: 1. Manually line and draw a circle slightly larger than the hole. When the electric drill is processed, it can be a...
Plastic injection molds requires high level manufacturing level during machining, Zhejiang Ceeto Mold Co.,Ltd. is capable of forming complicated molds, high-precision plastic products. We prodive you with plastic molds making, molding and blowing molding, SMC molds and rotational molds as well. Nowadays, software drawing is generally used. When designing, if there is no product drawing, it is difficult to play the advantages of software drawing in a complicated mold drawing. After the product...
In plastic mold design and selection of injection molding machine should pay attention to the following requirements and precautions for crystallized plastics according to our much experience, reported by Zhejiang Ceeto Mold Co.,Ltd.: The heat required for the material temperature to rise to the molding temperature is much, and equipment with large plasticizing capacity should be used. For general thermoplastic materials, the high temperature is easy to stick to the metal surface, while the low...
According to much experience in plastic resin molding industry, Zhejiang Ceeto Mold Co.,Ltd. know much about how to inject high level plastic products, there are three key points for choosen plastic raw material for our high quality plastic injection molds during molding process. Item 1- shrinkage rate of raw material The factors that affect the shrinkage of thermoplastics are as follows: 1.1 Plastic varieties Thermoplastics in the molding process due to the volume change from crystallization,...
In order to facilitate good demoulding for plastic injection molds, the wall of the plastic part should have a tilt Angle α in the direction of the exit mold, and its value is expressed in degrees. (1) The higher the accuracy of the product, the smaller the inclination of the drawing die should be. (2) For products with large size, a smaller drawing inclination should be used. (3) If the shape of the product is complex and not easy to draw, a larger slope should be selected. (4) The...
New plastic products or plastic sample parts are normally produced by plastic injection molds. Injection molds are usually made of a specified steel metal with good thermal conductivity. In addition to steel such as H13 or P20 metal molds, 3D printed plastic technology is normally used by most of companies now to produce plastic prototype products instead of making prototype molds at beginning. Under what circumstances do you use 3D printed plastic parts? Compared with plastic injection molds,...
Syringe is a common medical device, its common structure generally includes injection push and pull parts, syringes, needles, etc., this kind of syringe is simple to make, easy to use, syringe barrel is made of plastic, and usually there are scale instructions indicating the volume of liquid in the syringe, generally use 2 ml, 5 ml, 10 ml or 20 ml syringe, occasionally use 50 ml or 100 ml, intradermal injection with 1 ml syringe. Classification of disposable medical syringes Medical disposable...
Sometimes we are facing some technical problems in the molding of plastic injection molds , such as sticky issues on mold cavity, parting surface burrs, weld lines, sink marks, ejector marks and so on. Today we mainly come to understand how to solve this technical problem of mold cavity sticky issues on plastic injection mold products? First of all, the problem we have to consider is the reason of the mucous membrane. The mold of the injection mold is divided into the adhesive front mold and...
Ceeto Mold has rich experience to design high quality plastic injection molds, here we summarize 6 key points how to design well about plastic injection molds. Key point 1: Firstly we have to define plastic injection mold open direction and parting lines For each plastic product before you start to design plastic molds in order to make sure that core pulling slider structure can be reduced and parting line ‘s influence to plastic product can be eliminated. Key point 2: Draft angle Proper draft...
PC plastic resin is polycarbonate which is widely used in plastic injection molding industry and because of its excellent mechanical properties, plastic injection molding business is one of our main service. Plastic resins our factory use ABS, PC/ABS, PP new or recycled, HDPE, Nylon or with glass fiber, POM, PC as well. PC plastics have high mechanical strength, wide temperature range, good electrical insulation performance (but no anti-arcing performance), good dimensional stability, and...
Ceeto Company has been dedicated to design and manufacture plastic injection mold for over 10 years, business refers to Automotive Industry, Home Appliance Industry, Daily Commodities Industry, Medical Industry. Now we summarize five points to be paid attention when you make plastic injection molds. See follows: The cavity and core are three-dimensional External and internal shape of Plastic Part is formed directly by the cavity and core, processing difficulty is much more bigger for these...
The greatest quantities of plastic parts are made by injection molding. The process consisits of feeding a plastic compound in powdered or granular from from a hopper through metering and melting stages and then injecting it into a mold. After a brief cooling period, the mold is opened and the solidified part ejected. In most cases, it is ready for immediate use. Several methods are used to force or inject the melted plastic into the mold. The most commonly used system in the larger machines is...
The purpose of heat treatment for tool steel of plastic injection molds is to control the properties of a metal or alloy through the alteration of the structure of the metal or alloy by heating it to definite temperatures and cooling at various rates. This combination of heating and controlled cooling determines not only the nature and distribution of the micro constituents, which in turn determine the properties of steel of plastic molds, but also the grain size. Heat treating should improve...
How to maintain plastic injection molds? 1. Clean the upper and lower surfaces of the injection mold before installing the mold to ensure the correct cooperation between the installation surface of the injection mold and the press table. 2. Open the mold after the mold is installed, and clean the mold guiding mechanism and the surface of the mold cavity to ensure the quality of the parts. 3. Lubricate or apply grease to each sliding part of the mold. 4. Check and maintain the side guard plate,...
The need to produce small food container injection molds, lightweight parts has made thin-wall injection the most important performance increase for injection molding machines."Thin wall" is usually defined by the wall thickness of less than 1mm of portable electronic products.For large automotive parts, the "thin wall" can be 2mm.In short, thin-walled products require changes in processing technology: higher pressure and speed, shorter cooling time, changes in the ejector and gate...
How to polish a good mold? Plastic mold polishing near me. In the process of diversification and high grade development of industrial products, how to improve the die quality, which directly affects the product quality, is an important task. In the process of plastic molds manufacturing, smooth machining and mirror machining after shape machining are called surface grinding and polishing of parts, which is an important process to improve plastic molds quality. Mastering reasonable polishing...
Injection machine gate design is related to the size of the plastic sample parts structure and mold shape as well, as well as the molding process parameters and performance of the plastic part. However, as long as basic function is considered, gate cross section is small and the length is short, in this way it can meet the requirements of increasing the flow rate, rapid cooling and closing, and the separation of the plastic parts and the minimum gate residue are satisfied. 1. The gate location...
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