How to make a silicon rubber pad

 

  Ink is transferred from the cave of pad plate to the substrate by a silicon rubber pad in the process of pad printing. Please choose pad figure and hardness according to the substrate and printing quality. Know how to make a pad as below:
       
         1.Mixing
             Pouring mixing emulsion with silicon rubber and silicon oil as 100:20-50 percent into a clean plastic cup. Beat up it  uniformity with a beating machine- RM-20M mixxing machine.
         
2.Cleaning
       Cleaning the plastic pad module and put it on the table. In order to remove the pad easily after solid, Please coating some Release agent on the mould.
       
3.Harding
               Adding 3-5 gram harder to mix emulsion and put in a vacuum glass cover of motor machine  RM-20BV can vacuumized with 10kg Mixxing liquid . Start the machine for 2-4 minutes till the air in the  mixing emulsions completely removed.
         
4.Pouring & Covering
            Taking out mixing emulsion and pouring into pad module. Cover a wooden plate on it. There are two kinds of mould, One is Transparence resin mould, The other is PET adsorption mould . Pet adsorption mould is suitable for commonly rubber pads. Transparence resin mould more suitable for making high quality rubber pads.
         
5. Solidifying
             Solidification speed is related with the environment temperature, higher temperature,faster solidification speed. Otherwise, in order to expedite solidification speed, please put more  hardener into mixing emulsion.
         
6.Optimizing Hardness

        Complete solidification requires 2-5 hours. Adjust the percentage of silicon oil can adjust the the hardness of rubber pad. Less percentage of silicon oil will produce a harder pad. When you increase the percentage of silicon pad, please add corresponding percentage of hardener. But, too much percentage of silicon oil will affect pad quality negatively. Precision hardness of rubber pad need measure with Shore durometer.

 


Pad-Making materials



 Usage︰

Silicon rubber , Silcion oil and Hardner are three Mainly ingredients to make rubber pads.

Production Advantage ︰

  • Well wear resistance;
  • Good flexibitity, Excellent resist Tear Strength;
  • Easily to Controll on the process , Easily to Demould from The mould;
  • Very well ink transitivity to get good printing quality;
  • Sharp Edge of words on Rubber pads;
  • Long life to use and less ageing.
  • Size standard, Competent interchangeability;
  • Fine structure and meke hlaf-tone;
  • reducibility better and very good design edge of drawing.

Use Method︰

  • Fix silicon rubber and silcion oil;
  • Vacuumized the mixxing liquid with vacuumizing Machine;
  • Adding some Hardner;
  • Pour mixxing liquid to The mould made By resin or PET plastics Mould;
  • Cover the wooden plate;
  • take out the rubber pad from the mould after Solidification.

Storage︰

  • Store in shady place.
  • Storage In steel or Plastics bottle.
  • Shelf life︰ Two years. 



Silicon rubber Model

Description

unit

Colour

Package weight

Package tool

1160# SR

KG

Red, white

5kg/15kg/25kg

Steel PP

2182# SR

KG

red

5kg/15kg/25kg

Steel pp

3202# SR

KG

red

5kg/15kg/25kg

Steel pp

4269# SR

KG

red

5kg/15kg/25kg

Steel pp

5307# SR

KG

red

5kg/15kg/25kg

Steel pp

6325# SR

KG

red

5kg/15kg/25kg

Steel pp

7791# SR

KG

red

5kg/15kg/25kg

Steel pp

B89# SR

KG

red

5kg/15kg/25kg

Steel pp

A306# SR

KG

Transparence

5kg/15kg/25kg

Steel pp

V SO

KG

Transparence

5kg/15kg/25kg

Steel pp