发明名称 |
Method and device for spraying mixtures obtained from the reaction of polymer materials |
摘要 |
A method and a device for producing a thin article or a thin coating on a previously manufactured solid body. At least two reactive polymer materials are mixed together thoroughly and die resultant mixture is discharged via a nozzle in the form of a thin tube. This thin tube is pulverized or atomized by means of the introduction of a controlled flow of pressurized air with the result that die pulverized mixture may be sprayed onto an open mold or onto a surface or onto a previously manufactured solid body which is to be coated. |
申请公布号 |
US8905329(B2) |
申请公布日期 |
2014.12.09 |
申请号 |
US200913123998 |
申请日期 |
2009.10.12 |
申请人 |
Stemma Srl |
发明人 |
Bordin Ettore |
分类号 |
B05B1/28;B29B7/42;B29C41/36;B29B7/80;B29B7/74;B05B7/06;B05B7/04 |
主分类号 |
B05B1/28 |
代理机构 |
Fredrikson & Byron, P.A. |
代理人 |
Fredrikson & Byron, P.A. |
主权项 |
1. Spraying device comprising:
a casing enclosing at least one chamber having a nozzle at one end; radial openings or channels for feeding reactive basic components in a fluid state of a polymer mixture, said openings or channels being provided on a surface of said at least one chamber, whereby said basic components contain additives depending on the application or use of the mixture; a mixing screw with a helical profile extending along the axis of said at least one chamber; means for operating the mixing screw so as to cause it to rotate about said axis and move linearly along the axis; wherein an end diameter of the mixing screw in front of the nozzle is same as diameter of the nozzle; a ring comprising a free head encircles with a calibrated radial clearance a portion of the one end of the casing and has a position adjustable along axis of rotation of the mixing screw, the ring being provided with openings for introducing pressurized air onto mixture discharged by the nozzle through a front clearance and being calibrated so as to pulverize or atomize the mixture so that it can be sprayed; clearance between an inner surface of the at least one chamber of the casing and crest of the helical profile of the mixing screw is constant and has a value of less than 1 millimeter; and further comprising metering valves for introducing the basic components into said at least one chamber. |
地址 |
Altivole (Treviso) IT |