Plastic eraser

Lsat week's answer is ①.
"Shodo performance Kousien" is originated in Performance of Mishima high school's Shodo club .They performed Shodo performance as "Demonstration of Sho" in the Shopping mool .

Let's watch the movie!（Sorry!This is Japanese movie）

This movie is "interview of plastic eraser". In the movie , the plastic eraser says "-Stony eraser is said that they can erase ink . But it is not erasing but shaving off paper . And correction fluid is said that they can erase ink too . But it is not erasing but lapping over - ". The way of erasing is not known by many people . So, I introduce it in this week .

①Why can eraser erase the word ?
Writing word is a mere situation that the corn of black lead sticks to the paper .Plastic eraser soaks up the corn with its surface and erases words .
②Does the corn of black lead change white corn ?
No , it does not .Platic eraser does not change color of the black corn but it soaks up black corn with its surface .When you beat the word that you want to erace with plastic eraser , the word is erased . Because the corn of black lead is soaked up by plastic eraser . But , this way can't erase perfectly .

③What is better way ?
Rub the paper with plastic eraser !At first , many corns of black lead stick to the surfase of plastic eraser . Second , the surfase  is shaved and is removed as waste . New surface appears and many corns of black lead stick to the new surface again .The repetition and rubbing paper removes the black corn that twists the fiber of paper.So , this way can erase words or pictures perfectly.

Do you understand the mechanism of eraser ?

Today , I want to show you "Life of the plastic eraser(prosess of oroduction of eraser)"
①Composition of the material.
Putting plastic material and plasticity drug into the mixer.

②Mix
Mix materials and adjust hardness of plastic eraser by adjusting the way of adding heat and time of adding heat .

③Make shape
There are three ways of  making shape of eraser .



1.Osidashi-keisei(push out)
In this way , long fine eraser is made .

2.Attushyuku-keisei(pressure)
In this way , thin plate of eraser is made .

3.Shasyutu-keisei(pour)
In this way , standard shape of eraser is made.

④Cut！

⑤Finish
Adding case or tape to the plastic eraser .




Do you understand the prosses production of plastic eraser ?
There are a lot of stage of production . And next week ,I will show you the eraser life after shipment .Let's watch the movie!!
 

This movie is the song that plastic eraser erases your sorrow.
Have you ever wished "if my plastic eraser can erase my mistake or my sorrow" ? If you have done , I recommend this song .
Question
In this movie ,how many eraser appear ?
①３
②５７
③２４
 Thank you for reading!

 

 

につめれば完成です！