3results about How to "Contact safety" patented technology

The application relates to a processing method of a momentum wheel thin-wall sealing cover, which comprises the following steps: 1, rough machining is performed on the outer circular sidewall of a part blank, a process handle and a process handle sidewall; 2, a self-adaptive sidewall damping tool is installed on a general hydraulic chuck, the process handle end of the part is clamped, and the right end of the part is in elastic contact with the self-adaptive sidewall damping tool; a self-adaptive circular damping tool is sleeved on the outer circle of the part; the inner hole of the part is precisely machined; 3, the self-adaptive circular damping tool is removed, a gas bag part of a gas bag auxiliary support is inserted into the inner hole of the part, and the gas bag is inflated to be in contact with the inner hole wall of the part; then the center position of the right end rigid part of the gas bag auxiliary support is pressed by a built-in tail center of a machine tool tailstock; the outer circle of the part is precisely machined to the design size; 4, the outer circular sidewall of the part is precisely machined, and the process handle is removed. The application can realize a better machining damping effect.

The present invention relates to a food packaging material, to a method for producing a food packaging material and to the use thereof. The food packaging material of the present invention comprises (i) a paper substrate having a first side and a second side, the second side being opposite the first side wherein the paper substrate is impregnated with a composition comprising a grease barrier precursor, and (ii) a barrier layer coated onto at least the first side of the impregnated paper substrate, the barrier layer comprises a polymer wherein the total amount of perfluoroalkyl species and polyfluoroalkyl species in the packaging material does not exceed 20 ppm based on the total weight of the packaging material.

This invention relates to a food packaging material and a method for manufacturing the food packaging material. The food packaging material of this invention comprises a paper substrate having a first side and a second side, the second side being opposite to the first side, wherein the paper substrate is coated with a coating on at least the first side or the second side, the coating comprising wax and a copolymer selected from styrene-butadiene copolymers and / or styrene-acrylic copolymers.