Patent ID: 11931609
Assignee: nan
Field: Environmental technology (Chemistry)
Classification: CPC A | IPC A

Claim 8:
9. A device for preventing the spread of forest fire, the device comprising:
an outer skin member which is woven with a thermoplastic plastic tape having a melting point of 160 to 280° C. as a weft and a warp, the outer skin member having a texture obtained by weaving a weft tape and a warp tape; and
an inner skin member of a cylindrical container which is accommodated in the outer skin member and formed in a film shape prepared by extruding a thermoplastic plastic material having a thickness of 15 to 50 microns and a melting point of 110 to 130° C., the cylindrical container having an inner space configured to be filled with water,
wherein the texture of the outer skin member is a twill-weave mesh in which three or more warp and weft threads are intersected up and down, the twill-weave mesh forming a cylindrical bag with a space to accommodate the inner skin member,
wherein the inner skin member is seamlessly and continuously extruded into a cylindrical shape over a circumferential direction,
wherein the inner skin member is divided into a first portion that is subject to flame-retardant treatment and a second portion that is not subject to flame-retardant treatment, and
wherein, when the melting point of the inner skin member is reached, the second portion is melted to form a plurality of holes in a matrix shape at a predetermined interval for spraying the water from the inner skin member, and the first portion is not melted, such that the inner skin member is maintained as a cylindrical body while the water is sprayed through the plurality of hole serving as water jets.