PANEL COMPRISING INSULATING FOAM CORE
1 Assignment
0 Petitions
Accused Products
Abstract
An insulating panel 1 comprises a first sheet 2 with trapezoidal formations 12 and a second sheet 3. There is an insulating core 4 comprising a main polymeric foam body 4, such as of polyisocyansurate or phenolic foam, and a recycled foam portion. The recycled foam portion is of substantially the same formulation as that of the main foam body. Shredded foam pieces 25 are directly incorporated into the panel, for example into one or more of the profiled recesses 12 defined by crowns in the sheet 2. In the invention the recycled foam portion is introduced prior to lay-down of liquid foam reactants to ensure that the recycled foam portion is integrated into the main foam body.
12 Citations
47 Claims
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1-25. -25. (canceled)
- 26. An insulating panel comprising a first sheet, a second sheet and an insulating foam core between the first and the second sheets, the insulating foam core comprising a main foam body and a recycled foam portion within the foam body.
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39. A method for manufacturing an insulating panel of the type comprising a first sheet, a second sheet, and an insulating core of foam material therebetween;
- the method comprising the steps of;
—conveying a first sheet continuously along a bed; laying down liquid foam reactants onto the first sheet; leading a second sheet over the liquid insulating foam reactants; and heating the assembly thus formed in an oven to allow the foam to expand to form an insulating core between the first and second sheets, characterised in that a recycled foam portion is introduced prior to heating of the assembly in the oven. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47)
- the method comprising the steps of;
Specification