1. When rubber products are formed, they are compressed under high pressure. Due to the inherent cohesive force of the elastomer, they cannot be eliminated. During the molding and demolding process, extremely unstable shrinkage (the shrinkage rate of rubber varies depending on the type of rubber) often occurs, and it must take a period of time before it can be stabilized. So, at the beginning of a rubber product design, regardless of the formula or mold, careful calculation and coordination are necessary. If not, it is easy to cause product size instability, resulting in low product quality.
2. Rubber is a hot melt thermosetting elastomer, while plastic is a hot melt cold set. Due to the different types and types of sulfides in rubber, there is also a considerable difference in the temperature range of its molding and curing, and it can even be affected by climate changes and indoor temperature and humidity. Therefore, the production conditions of rubber products need to be adjusted appropriately at any time. If not, there may be differences in product quality.
3. Rubber products are a mixture of rubber raw materials made by mixing them in an internal mixer. During the mixing process, a formula is designed based on the characteristics of the desired rubber product, and the required product hardness is determined. The product is produced and molded using a rubber flat vulcanization machine. After the product is formed, the final trimming treatment is carried out to ensure that the surface of the product is smooth and free of burrs.
4. Rubber product aging testing belongs to the category of aging testing. Rubber aging refers to the phenomenon where rubber and its products undergo changes in performance and structure due to the combined effects of internal and external factors during processing, storage, and use, resulting in the loss of useful value. Manifested as cracking, sticking, hardening, softening, powdering, discoloration, mold growth, etc.