How to adjust the hardness of pad printing rubber head The hardness of the rubber head refers to the local ability of the rubber head material to resist the pressure of hard objects into its surface, which is called hardness.The rubber head mold has a Shore hardness range of 10-80, which gives the person who molds the rubber head mold product the opportunity to freely select the required hardness to achieve specific functions.For example, we can mix and match polymer base materials, fillers and additives in different proportions to achieve various intermediate hardness values.Specific methods for adjusting the hardness of the pad printing pad: Generally, we can use silicone oil to reduce the hardness of the pad.