Side Pressure Plate and its Preparation Method

A side pressure plate comprising:

• a first layer plate and a third layer plate, and a second layer plate provided between said first layer plate and said third layer plate;
• and
• wherein said first layer plate, said second layer plate and said third layer plate all comprise a plurality of square plates;
• and
• said square plates has at least one cutting surface, and said cutting surface of a plurality of said square plates are bonded to each other to form said second layer plate;
• and
• said square plates further comprises at least one long side surface, and said long side surface of a plurality of said square plates are bonded to each other to form said first layer plate and said third layer plate.

A side pressure plate comprising:

• a first layer plate and a third layer plate, and a second layer plate provided between said first layer plate and said third layer plate;
• and
• wherein said second layer plate comprises a plurality of first strips, said first strips having at least one first cutting surface and at least one first long side surface, said first cutting surface of said plurality of said first strips being bonded to each other to form said second layer plate;
• and
• said first layer plate and said third layer plate both comprise a plurality of second strips, said second strips having at least one second cutting surface and at least one second long side surface, said second long side surfaces of said plurality of said second strips being bonded to each other to form said first layer plate and said third layer plate.