Double"V" / Double"V"

Now we use the toilet roll everyday there is a very difficult problem, and is in the middle of toilet roll Paper core is difficult to get out, because some people like to use from the start in the middle. Some people use various means in order to barely squeeze out, this double "V" of Paper core at the edge of the two "V" shaped gap, the gap can be torn along the dotted line, and then squeeze the shrinkage , it is easy to remove the Paper core.