What is slime capsule

Hello, I do believe you meant either Slime Layer or Bacteria Capsule.

I included definitions for both.

Slime Layer:

The function of the slime layer is to protect the bacteria cells from environmental dangers such as antibiotics and desiccation. The slime layer also allows bacteria to adhere to smooth surfaces such as prosthetic medical devices and catheters.

Bacteria Capsule:

The cell capsule is a very large structure of some prokaryotic cells, such as bacterial cells. It is a polysaccharide layer that lies outside the cell envelope of bacteria, and is thus deemed part of the outer envelope of a bacterial cell.

A slime capsule is to enhances the ability of bacteria to cause diseases.