Method of manufacturing sidewalls for a portable restroom

A method of manufacturing sidewalls for a portable restroom comprising a blowing formation step and a cutting step, wherein:

• the blowing formation step includes:
• a formation device melting a plastic material and placing the melted plastic material into a mold, the mold comprising an upper case, a lower case and at least one cavity, a blowing aperture disposed at a conjunction area of the upper and lower cases and extending to the cavity;
• the formation device utilizing a blowing tube to connect to the blowing aperture;
• wherein during a blow molding process, the formation device inflates the plastic material through the blowing tube such that the plastic material expands to conform with a shape of the cavity, and when the mold is opened, a hollow casing member is obtained, the casing member further comprising a framed base, two opposite sides of the base respectively connected to a top board and a bottom board via a connecting lip, the connecting lip of the casing member having a relatively thinner thickness for a further cutting step, such that the top board and the bottom board of the casing member are respectively provided with an the engaging flange on both sides;
• and
• the cutting step includes:
• cutting the top board and the bottom board of the casing member off the connecting lip;
• wherein the sidewall is attached onto three adjacent sides of the portable restroom.

A method of manufacturing sidewalls for a portable restroom comprising a blowing formation step and a cutting step, wherein:

• the blowing formation step includes:
• a formation device melting a plastic material and placing the melted plastic material into a mold, the mold comprising an upper case, a lower case and at least one cavity, a blowing aperture disposed at a conjunction area of the upper and lower cases and extending to the cavity;
• the formation device utilizing a blowing tube to connect to the blowing aperture;
• wherein during a blow molding process, the formation device inflates the plastic material through the blowing tube such that the plastic material expands to conform with a shape of the cavity, and when the mold is opened, a hollow casing member is obtained, the casing member further comprising a framed base, two opposite sides of the base respectively connected to a top board and a bottom board via a connecting lip, the connecting lip of the casing member having a relatively thinner thickness for a further cutting step, such that the top board and the bottom board of the casing member are respectively provided with an the engaging flange on both sides;
• and
• the cutting step includes:
• cutting the top board and the bottom board of the casing member off the connecting lip;
• wherein the portable restroom further comprises a top board formed by the method of manufacturing sidewalls.