2results about How to "Guaranteed pollution" patented technology

The utility model discloses an improved plastic shape receiving and releasing oral cavity and maxillofacial surgical hole towel, including hole towel body, be provided with surgical area hole on the hole towel body, the outer ring of surgical area hole and the wrinkle department of hole towel body are sewn integral, the inner ring of surgical area hole is built -in with the soft quality pressure silk of plastic metal, the both ends of plastic metal soft quality pressure silk are from the inner ring of surgical area hole and go out, the both ends of plastic metal soft quality pressure silk go out and be provided with same metal buckle. The utility model discloses a surgical area hole, plastic metal soft quality pressure silk and metal buckle are set up to make the size of hole can be received and released at will, and the convenient adjustment improves the operation efficiency, can provide clear operation visual field, and can adjust the opening size according to the need, and according to the plasticity characteristic of plastic metal soft quality pressure silk, and then can be according to the contour of each patient face to carry out a pressing type's plasticity adjustment, reach plastic shape receiving and releasing.

This invention discloses a method for manufacturing a protective shell. A masking element is first injection molded onto the surface of the bonding area or areas that do not require painting. During subsequent painting operations, the masking element is used for painting. The masking element effectively protects the bonding area and areas that do not require painting, preventing paint from adhering to their surfaces. After painting is complete, the masking element is peeled off using physical or chemical methods to expose the bonding area and areas that do not require painting. Because these areas are free of paint, the bonding area can bond normally with other parts without the need for CNC machining, polishing, or grinding. By injection molding the masking element, the bond between the masking element and the bonding area is tight. During painting operations, paint will not seep into the surface of the bonding area. This solves the material waste caused by CNC machining of the bonding area with paint adhering to it, and also ensures that the surface of the bonding area is not contaminated by paint.