EP0038022A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Metallized bonded sheet comprising a polyolefinic film and a paper or paperboard sheet
Assignee: Moplefan SpA
•
Filing: 1981-04-08
•
Granted: —
•
Expires: 2001-04-08
Abstract
Abstract Bonded sheets for packaging comprising a polyolefinic film, a paper or paperboard sheet and optionally an interposed adhesive, wherein the polyolefinic film is coated at least on one face with a metallized layer having a resistivity of from 1 to 5 Ohm.
Inventors
- 👤 Fosco Bordini
- 👤 Luigi Mauri
- 👤 Luigi Negri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 17:45
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; B32B7/00; B32B7/04; B32B7/12; B32B2255/00; B32B2255/20; B32B2255/205; B32B2307/00; B32B2307/50; B32B2307/514; B32B2553/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
1) A bonded sheet endowed with a high capability of retaining the fold, comprising two layers and, optionally, an interposed adhesive layer, one of such layers consisting of a polyolefinic film and the other of a paper or paperboard sheet, said bonded sheet being characterized in that the polyolefinic film is coated at least on one face with a metallized layer having a resistivity ranging from 1 to 5 Ohm.
Claim 2
Dependent Claim
70 words
1) A bonded sheet endowed with a high capability of retaining the fold, comprising two layers and, optionally, an interposed adhesive layer, one of such layers consisting of a polyolefinic film and the other of a paper or paperboard sheet, said bonded sheet being characterized in that the polyolefinic film is coated at least on one face with a metallized layer having a resistivity ranging from 1 to 5 Ohm.
Claim 3
Dependent Claim
61 words
2) A bonded sheet accordin to claim 1, in which the polyolefinic film is a film, optionally oriented by stretching, prepared from isotactic polypropylene having a melt index of from 0.5 to 20, from polyethylene having a melt index of from 0.5 to 15, from propylene-ethylene thermoplastic copolymers having a melt index of from 1 to 20 or from mixtures thereof.
Claim 4
Dependent Claim
19 words
3) A bonded sheet according to any of the preceding claims, in which the metallized layer consists of aluminium.
Claim 5
Dependent Claim
27 words
4) A bonded sheet according to any of the preceding claims, in which at least one of the two outside surfaces is coated with a welding layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.