公开(公告)号：US3679476A

公开(公告)日：1972-07-25

申请号：US3679476D

申请日：1970-04-01

Applicant: PHILIPS CORP

Inventor： OOSTERHOUT GERARD WILLEM VAN ,  LEMMEN HENDRIKUS JOHANNES ,  KLOMP CORNELIS JOHANNES

IPC: B05C11/04 ,  B05C5/02 ,  B05D3/04 ,  B05D7/04 ,  G11B5/842 ,  G11B5/848 ,  H01F10/00

CPC classification number: B05C5/0254 ,  B05D3/0486 ,  B05D7/04 ,  G11B5/842 ,  Y10S428/90

Abstract: A METHOD OF COATING A SUPPORT BASE OF A SYNTHETIC MATERIAL, WITH A LAYER OF LACQUER FOR PARTICULAR APPLICATION IN MANUFACTURING MAGNETIC TAPE. THE LACQUER IS FORCED THROUGH A POURING SLIT INTO A PRESSURE CHAMBER WHERE IT IS TEMPORARILY STORED IN CONTACT WITH THE SUPPORT BASE. THE SUPPORT IS GUIDED ALONG THE STORED LACQUER UNDER A TENSILE STRESS AND THE SUPPORT WITH THE ADHERING LAYER OF LACQUER IS THEN GUIDED ALONG A SMOOTHING SIDE IN SUCH MANNER THAT THE PARTS OF THE SUPPORT IN FRONT OF AND BEHIND THE SMOOTHING SIDE FORM AN ANGLE SO THAT THE LAYER IS EQUALIZED. THE PRESSURE IN THE PRESSURE CHAMBER CAN BE CONTROLLED BY CONTROLLING THE ANGLE, THE TENSILE STRESS AND THE QUANTITY OF LACQUER SUPPLIED PER UNIT OF TIME SO THAT THE THICKNESS OF THE LAYER IS ALSO CONTROLLED.