Preparation materials: toothpaste, salt and glue.
The operation is as follows:
1, put a proper amount of toothpaste in the bowl. The crystal cream made from different toothpastes will be different, because the ingredients of toothpaste are different. )
2. put more glue. (Less glue)
3. Add a little salt. (Just use ordinary salt. )
4. Mix the three materials evenly.
5. Add a small amount of salt and continue to stir evenly.
6. Put some toothpaste and continue to stir evenly.
7. Stir well until it doesn't stick to your hands. The bottom is sticky and needs to be stirred all the time. )
8, non-stick hand-made, complete the renderings.
Principle of stretching rubber:
Stretched rubber is a widely used rubber product in modern manufacturing technology. Compared with the traditional rubber, the drawing rubber is soft, easy to stretch and wipe, and it is an indispensable auxiliary tool for all kinds of writing, painting and manual workers.
2. The main raw materials for stretching rubber are rubber, filler, oil and other additives. This material can be in good contact with paper, canvas and other materials, and can easily erase handwriting and painting traces. Rubber is the main component of tensile rubber, which is compressible and stretchable and has excellent resilience. The function of filler is to enhance the hardness of rubber and reduce the cost.
3. The manufacturing process of stretched rubber can be divided into two parts. The first step is to mix the raw materials together and press the mixed raw materials into blocks with an extruder. Secondly, the block-shaped raw materials are sent to the wire drawing mechanism, gradually compressed into slender strips through a series of annular dies, and then cooled and vulcanized.
4, the use of drawing rubber is very convenient, just stretch it horizontally, you can pull the rubber into a slender strip, and then gently wipe it along the lines that need to be erased. Wire drawing glue is widely used in all kinds of stationery, art supplies and manual fields because of its good flexibility, easy stretching and easy wiping.