Oven Kraft by Convertech
- ISO 9001
- ISO 22000
- FDA-compliant materials
- Food-contact certified
Oven Kraft by Convertech
G-Flute Technology
G-Flute is Convertech’s ultra-thin corrugated board, 0.8 mm overall. It holds its shape as a baking form, goes from freezer to oven, and runs through automated lines like rigid packaging.
0.8 mm
Overall thickness, G-Flute grade
−28 → +220 °C
Rated service range, freezer to oven
1 tray
Fill, bake, freeze, ship and reheat in the same format
ISO 22000
Produced under certified food safety management
Why the flute matters
Corrugated board gets its strength from shape. A fluted medium bonded between two flat liners works like a row of small beams, so the sheet resists bending far better than the same paper laid flat.
Standard flutes were developed for shipping cases, where cushioning matters most. A baking form needs something else: a smooth contact surface, clean fold lines, precise dimensions and walls that stay upright under batter and dough.
A finer flute gives more support points per centimetre, a flatter surface and sharper folds. G-Flute takes that principle down to 0.8 mm, which is how a fiber tray can do the job of a rigid baking form with a fraction of the material.
Board build
The barrier grade shown below is the build used for wet batters, fats and steam. Kraft, white and black finishes use the same structural core.
Thermal range
The same format can be filled, frozen, stored, baked and reheated without changing packaging. The tray the product was baked in becomes the tray it is sold in.
01
Rigid walls hold their shape under batter and dough on depositors and automatic filling lines.
02
Rated to +220 °C. The barrier side resists grease and steam, and the tray leaves the oven as a finished pack.
03
Rated down to −28 °C for frozen storage and distribution.
04
Oven and microwave reheating in the original tray, from retail shelf to table.
From reel to tray
Oven Kraft trays are produced by Convertech, which imports, slits, rewinds and converts industrial paper. Running paper supply and conversion under one roof keeps a board this thin consistent from batch to batch.
Board is laminated, cut and creased on automated lines under ISO 9001 and ISO 22000 systems.
Blanks are formed into finished trays, ready for filling on the customer’s line.
Each format is qualified against the tray it replaces, on the customer’s own line.
See it run
From board build to the finished loaf: the full cycle in one tray.
Engineering data
Each catalogue format is documented with outer dimensions, board grade and service temperature. Dimensioned drawings support line qualification and changeover planning.
Grades and finishes
G-Flute 0.8 mm comes in four finishes. Choose by product, fill and how the tray will be displayed.
Natural fiber look for bake-and-sell trays.
A clean, bright face for premium retail.
A reflective barrier face for demanding fills.
A dark face that frames baked and cooked products.
FAQ
Short answers to the questions we hear most often. For anything else, our packaging engineers reply personally.
Tell us about your product, your line and your volumes. We will propose a format and send samples.
