EP0314043A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Production method for metallized laminated plastic cardboard, in particular for alimentary use, and respective product
Assignee: Biograf Di Venturini A & C SNC
•
Filing: 1988-10-24
•
Granted: —
•
Expires: 2008-10-24
Abstract
Abstract Production method for metallized, laminated plastic cardboard, of the type involving a supporting structure in cardboard (b), with laminated plastic (a) on the surface in contact with foodstuffs and a metallized layer (a4) interposed between the laminated plastic (a) and cardboard (b), where said laminated plastic comprises the sizing (a5) to the cardboard (b) with at least one stabilized, two-faced, coextruding, polypropylene film (a) with the upper surface in heat-welded copolymer (a1) and the lower surface in metallizable monomer (a3), with metallized layer having a low degree of coverage with deposit parameters between 2 and 5 Ohm, preferably 2.5-3.5 Ohm, and in any case for a 30%-80% degree of coverage, preferably 50%-60%.
Inventors
- 👤 Vittorio Venturini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:50
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/56; B32; B32B; B32B38/00; B32B38/18; B32B38/1866
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
113 words
Production method for metallized, laminated plastic cardboard ,in particular for alimentary use and for respective product, of the type involving a supporting structure in cardboard (b), with laminated plastic (a) on the surface in contact with foodstuffs, and a metallized layer (a4) interposed between laminated plastic (a) and cardboard (b), characterized by the fact that said laminated plastic comprises the sizing (a5) to the cardboard (b) with at least one transparent plastic film (a), with metallized layer (a5) having a partial degree of coverage, that is to say, in such a manner that said sizing (a5) can take on the plastic structure of the film (a3) by passing through said metallized layer (a4).
Claim 2
Dependent Claim
113 words
Production method for metallized, laminated plastic cardboard ,in particular for alimentary use and for respective product, of the type involving a supporting structure in cardboard (b), with laminated plastic (a) on the surface in contact with foodstuffs, and a metallized layer (a4) interposed between laminated plastic (a) and cardboard (b), characterized by the fact that said laminated plastic comprises the sizing (a5) to the cardboard (b) with at least one transparent plastic film (a), with metallized layer (a5) having a partial degree of coverage, that is to say, in such a manner that said sizing (a5) can take on the plastic structure of the film (a3) by passing through said metallized layer (a4).
Claim 3
Dependent Claim
73 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that said laminated plastic includes the sizing (a5) on the cardboard (b) at least one transparent plastic film (a),, with metallized layer (a5) at a low degree of coverage, deposit parameters from 2-5 Ohm, preferably 2.5-3.5 Ohm, and in any case for a 30%-80% degree of coverage, preferably 50%-60%.
Claim 4
Dependent Claim
50 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per clim 1, characterized by the fact that said laminated plastic includes the sizing (a5) on the cardboard (b) with at least one polypropylene film (a) having the metallized surface in monomer (a3).
Claim 5
Dependent Claim
50 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per clim 1, characterized by the fact that said laminated plastic includes the sizing (a5) on the cardboard (b) with at least one polypropylene film (a) having the metallized surface in monomer (a3).
Claim 6
Dependent Claim
62 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that said laminated plastic includes the sizing (a5) on the cardboard (b) with at least one stabilized, two-faced, coextruding, polypropylene film(a) having an upper surface in heat-weldable copolymer (a1) and a lower surface in metallized (a4) monomer (a3).
Claim 7
Dependent Claim
69 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, charaterized by the fact that said laminated plastic includes the sizing (a5) on the cardboard (b) with at least one stabilized, two-faced, coextruding, polypropylene film (a) with an upper surface in heat-weldable copolymer (a1), an intermediate surface in monomer (a2) and a lower surface in metallized (a4) monomer (a3).
Claim 8
Dependent Claim
62 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, charaterized by the fact that in order to size the metallized film (a1+a2+a3+a4) to the cardboard (b), sizing (a5) having solvent or suspension vehicle is used, where the vehicle (11) is dried before joining is carried out by heated opposed rollers (21,21′).
Claim 9
Dependent Claim
68 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that to size the metallized film (a1+a2+a3+a4) to the cardboard (b), sizing (a5) is used which has solvent or suspension vehicle which is dried in a tunnel furnace at at temperature of over 30°C (11) before joining by means of opposed, heated rollers (21,21′).
Claim 10
Dependent Claim
87 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that to size the metallized film (a1+a2+a3+a4) to the cardboard (b), sizing (a5) is used having a solvent or suspension vehicle where, before joining by means of opposed rollers (21,21′) with heating between 20°C and 80°C, the vehicle is dried in a tunnel furnace (11) at a temperature between 30°C-80°C for a run of 2-4m at a speed of 10-50 meters for minute.
Claim 11
Dependent Claim
41 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that the type of sizing used has a polyurethan resin base diluted with ethyl and toluol acetate.
Claim 12
Dependent Claim
47 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that the type of sizing used has a polyurethan resin base diluted with ethyl and toluol acetate at 20%-40% dry p.p., preferably 30%.
Claim 13
Dependent Claim
55 words
Production method for metallized, laminated plastic cardboard, in particular for alimentary use and for respective product, as per claim 1, characterized by the fact that the type of sizing used has a polyurethan resin base diluted with ethyl and toluol acetate at 20%-40% dry p.p., preferably 30%, while the ethyl/toluol acetate diluent has 70/30 p.p.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.