1, pad printing rubber uses: condensation pad printing silicone rubber is mainly used for plastic toys, electroplating products, electronic toys, trademarks, communication equipment, craft gifts stationery, and other irregular pattern printing.Pad printing rubber head is the pattern on the steel plate rubber head as a carrier, and then the pattern on the steel plate on the toy printing products.

  2, pad printing adhesive in the use process should pay attention to

  Silica gel filtration to filter impurities, or in the packaging process, artificial in the packaging, the bucket or plastic bag to clean.

  The service life of pad printing silica gel is closely related to the size of the pattern to pad printing, and the rubber head should be replaced according to the size of the pattern in pad printing operation.For example, printing is a large pattern, to use a larger pad printing rubber head, pattern printing small, to use a small rubber head.The ratio of the size of the plastic head to the drawing is 3:1.

  Features: pad printing adhesive requires fine quality, no impurities, good resilience, good oiling, clear pattern printing.

  3, note: any glue head or glue are oiled, if the printing pattern is large, and the font is thick, to use a pad printing head with lower hardness, in order to prevent the phenomenon of not oiling, not oiling is small English letters, the reason is the hardness of the glue head itself is too large, there is no ink adsorption under the steel plate on the glue head. 

The production principle of pad printing adhesive:

  1.Vulcanization system of rubber is the basis of great progress of rubber industry.Pad printing rubber head is the use of room temperature vulcanized silicone rubber under the action of curing agent, such as crosslinking into a network of elastomers made of principle.

  Rubber is some large molecular chain of hydrocarbons, the main chain will only have carbon atoms called carbon chain rubber;The main chain in addition to carbon atoms also contain other atoms of rubber called hybrid chain rubber;If the main chain contains silicon (Si), tin (Sn), boron (B) and other atoms of the organic group of rubber, then called elemental organic polymer.Silicone rubber is an organic polymer containing silicone groups on the main chain.There are two curing processes of silicone rubber, one is high-temperature curing, and the corresponding silicone rubber is called high-temperature curing silicone rubber, referred to as HTV;The other is room temperature vulcanization, and the corresponding silicone rubber is called room temperature vulcanization silicone rubber, referred to as RTV.RTV silicone rubber is divided into two kinds, one is molding, the other is condensation type.

  2.Condensation type silicone rubber with hydroxyl terminal (-OH), easy and containing easy hydrolytic groups (-OCH3, -ococh3) of silane condensation, room temperature vulcanization, crosslinking agent is silicate ethanol, the catalyst is dibutylstinate February silicate.Additive silicone rubber generally contains -CH=CH, end group, usually using polysiloxane containing Si-H bond as crosslinking agent for autoaddition reaction crosslinking elastomer.