Micro-negative pressure foam dressing and manufacturing method thereof

A manufacturing method of a micro-negative pressure foam dressing, comprising the following steps:

• step 1, spreading a silicon gel film on a horizontal surface, and stamping and punching it by a mechanical punching mode;
• step 2, spreading the punched silicon gel film on a composite board, and placing a hemispherical liquid absorbing negative pressure pad on an upper surface;
• step 3, covering a cut-out sealing film on the liquid absorbing negative pressure pad, and compounding the silicon gel layer and the sealing film using an annular pressure roller to obtain a semi-finished product;
• step 4, transferring the semi-finished product into a vacuum operation table;
• step 5, placing an elastic memory piece above the sealing film, and coating an exothermic agent layer over the elastic memory piece;
• step 6, covering a cut-out non-woven fabric coated with glue over the exothermic agent layer, and pressing the non-woven fabric to bond with the sealing film together with the exothermic agent layer;
• step 7, placing a cut-out release film at the positions above and below the product respectively, and compounding them with an annular pressure roller;
• step 8, taking out the product, die-cutting and shaping, and packaging and sterilizing.