EP0063108A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Packaging material
Assignee: Akerlund and Rausing AB
•
Filing: 1982-03-25
•
Granted: —
•
Expires: 2002-03-25
Abstract
Abstract The invention provides a packaging material for food-stuff products intended to be inserted directly into a processing oven, as well a conventional heating oven as a microwave oven. The packaging material is such that at least a region of one side thereof is provided with a coating comprising heat radiation reflecting material allowing transmission of microwave energy.
Inventors
- 👤 Carl-Axel Björkengren
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 16:47
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3463; B65D2581/3464; B65D2581/3471; B65D2581/3472; B65D2581/3479; B65D2581/3486; B65D2581/3494
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
Packaging material based on cardboard or similar material and formable into a package for insertion with food product contens directly into a processing oven, the improvement that at least a region of one side of the packaging material is provided with a coating comprising heat radiation reflecting material allowing transmission of microwave energy.
Claim 2
Dependent Claim
53 words
Packaging material based on cardboard or similar material and formable into a package for insertion with food product contens directly into a processing oven, the improvement that at least a region of one side of the packaging material is provided with a coating comprising heat radiation reflecting material allowing transmission of microwave energy.
Claim 3
Dependent Claim
22 words
Packaging material as in claim 1, wherein the coating including the heat readiation reflecting material is applied as a metallic printing ink.
Claim 4
Dependent Claim
32 words
Packaging material as in claim 2, wherein the configuration of the printing ink forms a pattern of dots, flakes, etc. having a coverage of around 10-70 % of the total printed area.
Claim 5
Dependent Claim
21 words
Packaging material as in claim 3, wherein the printing ink is protected by a heat resistant layer, for instance polyester layer.
Claim 6
Dependent Claim
20 words
Packaging material as in claim 4, wherein the surface weight of the polyester layer amounts to approximately 15-30 g/m 2.
Claim 7
Dependent Claim
26 words
Packaging material as in claim 1, wherein the coating is included in an extrusion coated layer selected from the group of polyester, polymethylpenten, polypropylene and HD-polyethylene.
Claim 8
Dependent Claim
38 words
Packaging material as in claim 6, wherein the plastic layer has a surface weight of 15-30 g/m 2 , and the heat radiation reflecting material is particular and amounts to 0,01-1 % of weight of said surface weight.
Claim 9
Dependent Claim
22 words
Packaging material as in claim 7, wherein the heat radiation reflecting particles consist of food inert metal particles, for instance aluminium particles.
Claim 10
Dependent Claim
29 words
Packaging material as in claim 6, wherein the coating having the heat radiation reflecting characteristics forms a layer of generally randomly, but substantially uniformly distributed heat radiation reflecting particles.
Claim 11
Dependent Claim
22 words
. Packaging material according to claim 1, wherein said coating comprising heat reflecting material exists on both sides of the packaging material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.