Rubber pad

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.

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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.

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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