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Introduction to the relevant knowledge of Wholesale pad printing silicone rubber!
Release time:
2021-08-12 13:36
Do you know the relevant knowledge of Wholesale pad printing silicone rubber? Follow the editor to learn more!
1. Hardness
Hardness characterizes the rubber head's ability to resist compression deformation. In printing, the softer rubber head can obtain greater deformation, which is suitable for printing on substrates with large curvature; while the harder rubber head has less deformation and small dot expansion during printing, which is suitable for flat prints or gradation prints. Printing. To adjust the hardness of the rubber head, in addition to adjusting the content of silicone oil, the key is to select the correct softener.
2. Tear strength
Rubber tearing usually occurs from defects or microcracks, and then progresses to fracture. The tearing strength is often related to the crosslinking density, and the tearing strength is the largest under the appropriate crosslinking density. If the content of cross-linking agent is too much, the tear strength tends to decrease.
3. Resistance to fatigue damage
The phenomenon that the structure and performance of the pad printing rubber head undergo repeated dynamic compression is called "fatigue". With the continuation of the fatigue process, Wholesale pad printing silicone rubber becomes loose, the surface is cracked, cracks appear, and slowly expand to complete rupture, which is called "fatigue failure".
The fatigue process of Wholesale pad printing silicone rubber includes two stages: crack formation and crack expansion. Under normal circumstances, rubber can be used in combination or combined to vulcanize to improve the fatigue resistance of Wholesale pad printing silicone rubber.
The above is a brief introduction to the relevant knowledge of Wholesale pad printing silicone rubber.
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