Dispensing carton for a roll film
US5050788A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1990 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Feb 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/248
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dispensing carton containing film wound cylindrically includes an adhesive retaining device which retains the leading edge of the film left after the film pulled out from a carton box has been cut by a cutter. The retaining device includes a base member, a sticking layer mounted on one surface of the base member to fix the base member on the surface of the front panel and an adhesive layer mounted on the other surface of the base member. The adhesive layer is formed of grafted copolymer obtained by graft-polymerizing vinyl chloride monomer with copolymer of ethylene and vinylacetate. Preferably, the adhesive layer is formed of grafted copolymer obtained by graft-polymerizing vinyl chloride monomer having weight ratio of 80-20 with copolymer of ethylene and vinylacetate having weight ratio of 20-80 in which the weight ratio of ethylene and vinylacetate is 20-70 to 80-30. Further, the surface of the adhesive layer is partially covered by a resin layer to reduce the surface area of the adhesive layer for retaining the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.