| 摘要 |
<p>313,852. Du Pont Viscoloid Co., (Assignees of Davis, F. B.). June 16, 1928, [Convention date]. Compound transparent sheets. -The edges of laminated sheet material, particularly compound transparent sheets, are coated or sealed with finely divided metal preferably sprayed on in a molten state. The spray may be caused by melting a wire in a nozzle fed with combustible mixture including compressed air. Various metals may be used, such as tin or zinc and aluminium with suitable fluxes. Any suitable shape may be given such as that shown at 4b. U.S.A. Specifications 1,100,602, 1,128,058 and 1,299,988 are referred to.</p> |
