Masking film roll for use in painting, method for producing it, and tubular film roll from which it is produced
US6124018A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1997 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Oct 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24793
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention provides an on-line continuous method for producing a masking film roll to be used in painting, comprising corona-discharging the inner surface of a tubular film of a polyolefinic resin, cutting the tubular film open, folding the film in the lengthwise direction in a particular manner, partly attaching an adhesive tape to the film along its lengthwise one edge in such a manner that the adhesive surface of the tape is made to face the corona-discharged surface of the film and that the thus-attached tape is left to have a non-attached part in its lengthwise direction, and winding up the film around a tubular core to be a roll, provides the masking film roll as produced by the method in which the adhesive surface of the adhesive tape attached to thereto faces opposite to the non-corona-discharged surface of the uppermost layer of the folded film, and provides a tubular film of a polyolefinic resin from which the masking film of the invention is produced and of which the inner surface has been corona-discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.