Plastic Bottle Cap Mold Design and Processing

We specialize in the development and manufacture of a full range of bottle cap moulds, such as anti-theft bottle cap moulds, flip cap moulds, bow-tie bottle cap moulds, water bottle cap moulds, shampoo bottle cap moulds, etc. We have more than 10 years of plastic bottle cap mold manufacturing experience, so how to make a good mold? We analyze quality control for you during the design and processing stages.

Good design is the prerequisite to ensure mold quality

After we receive the customer’s product design, the project manager will immediately call all relevant technical personnel to analyze its shortcomings and possible problems during processing. For example, analysis of demolding slope, strength, plastic filling, deformation, wall thickness, skin texture, etc. After these discussions, mold flow analysis will be carried out immediately. If there are any problems, we will immediately get in touch with the customer and provide solutions or suggestions.

Selection of reasonable processing technology has an extremely important impact on mold quality

(1) When processing the mold cavity and core rounding, if the feed rate is too large, it will leave a deeper coarse knife mark. These knife marks will generally produce stress concentration, which will be formed during quenching and tempering. Small cracks, when assembled on the injection molding machine, will cause cracks to propagate for a long time and cause the workpiece to break.

(2) The heat treatment process also has a greater impact on the quality of the mold. For example, quenching will affect the size of the workpiece, and the problem of insufficient allowance caused by quenching deformation should be considered during finishing.

We not only use reasonable processing technology to ensure the quality of molds, but also our processing equipment adopts first-class equipment at home and abroad. Our machine tools are purchased from Japan Sodick and Italy Fidia. Using high-precision processing and testing equipment, we not only ensure the accuracy and high quality of the finished plastic bottle cap molds, but also strive to minimize mold delivery time.

Selection of plastic bottle cap mold materials

When selecting mold materials, it is necessary to comprehensively consider the working conditions and processing technology of the mold. Generally, the material of the mold is usually made of S136 steel produced by ASSAB. The Rockwell hardness is HRC 45-48, which effectively ensures that the life of the mold is extended by 1M. The mold is processed by a hot runner system with good thermal conductivity. The heat conduction speed is fast, and the temperature can be raised quickly during the production process of the bottle cap, and a very ideal heating effect can be obtained. And a well-chosen hot runner system can also ensure the balanced and stable injection of all gates of the mold, so as to produce better plastic bottle caps. At the same time, in order to facilitate customers to replace mold parts, we provide a variety of brands of hot runner systems to choose from.