Plastic Molding Manufacturer | China Custom Plastic Parts Services Contact@china-plasticparts.com
Author: MULAN -Plastic Molding Manufacturer
Injection mold processing is a very common manufacturing method. Process completion is the three basic steps of product design, mold design and production process, which constitute the three main elements of injection mold processing. So what is a better way to process injection molds? Product design is an important aspect of the large-scale injection molding process. The right design is to achieve a satisfactory goal, but this may require a lot of creativity.
Product design usually uses computer-aided design software, and some specific methods are used to avoid cost errors in the product design process as uniform as possible, and to gradually transition from one thickness to another when the thickness changes incorrectly. It is also important to avoid building stress, such as 90 degrees or lower. Our team of technical design engineers will be able to brainstorm, design and improve various solutions to meet the complexities of a specific project, laying a solid foundation for the successful completion of the injection process.
In the process of large-scale injection molding, mold design cannot be ignored. Like overall product design, mold design is another opportunity to prevent defects in large injection molding processes. Poor design can waste a lot of time and money.
When the product is properly designed, approved and molded, it is time to start the actual production, which is the basis of injection mold processing. Or the thermosetting thermoplastic material enters the heating cylinder through the hopper in the form of pellets, is heated to a predetermined temperature by the large screw, and passes through the door and the mold through the large screw. Once in the mold, the pellets will remain in place under the proper pressure for a predetermined cooling time.
After reaching a certain time, the mold is opened to form a product. This cycle is repeated and can be used to produce a batch of injection molded parts. In short, the processing process of large injection molding products needs a good solution as a guide to create a functional and beautiful production mode.
High quality injection molded parts are achieved through effective communication and transparency throughout the design process. Why is there a peculiar smell when the injection mold is processed? 1. Use a purer resin in the large-scale injection molding process. During the injection molding of many large plastics, especially plastics such as polyvinyl chloride, styrene, polyvinyl acetate, acrylic, trace residues can cause unpleasant odors.
It is very difficult to get rid of these odors with monomer residual resin. If you use odorless resin, the effect will be poor. 2. Change additives in injection molding.
The tertiary amine catalysts used in the production of polyurethane foam often produce very faint odors and fog up the interior windows of cars. The solution to this problem is to find alternatives to these amines. One of the measures using polyols.
The remaining hydroxyl compounds are not only part of the polyurethane molecular chain, but also have catalytic activity. Some polyols can also replace half of the tertiary amine catalyst, so the product has less odor than that. PVC stabilizers used for extrusion or calendering are often replaced by high odor zinc stabilizers.
Tin octoate acts as a heat stabilizer and is also common in automotive PVC due to its high odor and low fogging. In products, vegetable-derived oils such as erucic and oleic acids have much higher odor than amine lubricants (used in polyolefin and styrene food packaging). 3. Injection molding adsorbent.
If the polymer is filled with a small amount of zeolite (an aluminosilicate adsorbent), the odor of the material can be eliminated. Zeolites have a large number of disks that trap small, odorous gas molecules. The molecular sorbent has been successfully used in polyolefin extruded tubing, injection and extrusion blow molded containers, barrier packaging, extrusion packaging and closures.
Molecular adsorption powder can also be added to the plastic as a hygroscopic agent. In addition to removing water vapor, water vapor can also produce plastic odors. For more information about injection molds, please visit the official website of Xingye: http://www.dgxingyesj.com/.