4 results about "Square Centimeter" patented technology

This invention provides a process for manufacturing molded thermoplastic sheets using a formed shell-shaped mold. [Means for Solving the Problem] A method for using a shell mold manufactured by: a pattern groove forming step of forming a pattern groove in a shell mold prototype; a vacuum suction hole forming step of irradiating the same position on the back side of the shell mold prototype where the pattern groove position is formed on the shell mold prototype with laser light multiple times under different conditions to form a vacuum suction hole in which the hole diameter on the back side of the shell mold is at least twice the hole diameter on the front side of the shell mold; a thermoplastic sheet placement step of placing a thermoplastic sheet on the surface of the shell mold; a heating step of heating the thermoplastic sheet at a temperature between 100°C and 220°C; and a suction step of applying a vacuum suction force on the back side of the shell mold at a rate of -0.01 kilograms per square centimeter to -1.5 kilograms per square centimeter.

The invention discloses a waterproof, breathable and sound-producing spherical roof with a nano-microsphere layer of more than 50 mu. The waterproof, breathable and sound-producing spherical roof is prepared by the following steps: irradiating and bombarding a rigid and tough material of more than 50 mu by using a heavy ion beam to form a heavy ion nuclear track membrane down-hole base material, etching the down-hole base material to obtain micron pores with the pore diameter of more than 1.5 mu m, and carrying out sound production on the micron pores to obtain the waterproof, breathable and sound-producing spherical roof. And a substrate having a number of more than 100,000 pores per square centimeter. The micron-hole base material is coated with the nano-microsphere waterproof breathable layer formed by stacking nano-microsphere spherical linkage, the oleophobic and hydrophobic layer with the breathable function is arranged on the nano-microsphere waterproof breathable layer, the waterproof grade can reach 50 m or above, and the loudspeaker sounding globe roof which is waterproof, breathable, oleophobic, hydrophobic, high in mechanical strength, good in rigidity and high in toughness is obtained. The rigidity of the spherical roof used as a loudspeaker sounding spherical roof is met, and the spherical roof used as a deep waterproof self-pressure-relief loudspeaker product has waterproof, breathable, oleophobic, hydrophobic, rigid and toughness requirements of tearing resistance under deep water and high pressure.