Abstract: In an apparatus for the deposition of hardenable foamable compositions wherein a strip of foamable liquid composition is deposited within a restraining channel and subsequently hardened by means of a centrifugal dispensing head to form a hollow generally tubular strip, improved uniformity is obtained employing a spinning mandrel which projects into the portion of the strip during the foaming and partial curing.

Abstract: A laminate of foam planks is prepared by bonding closed cell foam slabs to either side of a foraminous reinforcing skin, applying a second skin to one side of the laminate formed. In formation of the laminate, the ends of adjacent foam slabs are butted together under mild pressure. The resultant laminate is particularly suitable for the preparation of spirally generated thermal insulation about a vessel wherein the second skin is disposed remote from the vessel. An insulation strip or laminate having very satisfactory performance is obtained with a minimal number of processing steps.

Abstract: In an apparatus for the deposition of hardenable foamable compositions wherein a strip of foamable liquid composition is deposited within a restraining channel and subsequently hardened by means of a centrifugal dispensing head to form a hollow generally tubular strip, improved uniformity is obtained employing a spinning mandrel which projects into the portion of the strip during the foaming and partial curing.

Abstract: Walled structures are prepared from foam-in-place components such as those used to prepare rigid polyurethane foams wherein successive strips of foam are deposited and hardened within a three-sided enclosure having a generally H-shaped configuration. A foraminous scrim such as glass fiber mesh forms part of the vertical legs of the H and foam is disposed below the cross piece of the H to bond to adjacent scrim facing sheets and scrim of a previously disclosed strip. The foam is significantly reinforced, joined to the previously deposited structure and foaming components are isolated from depositing apparatus.

Abstract: Walled structures are prepared from foam-in-place components such as those used to prepare rigid polyurethane foams wherein successive strips of foam are deposited and hardened within a three-sided enclosure having a generally H-shaped configuration. A foraminous scrim such as glass fiber mesh forms part of the vertical legs of the H and foam is disposed below the cross piece of the H to bond to adjacent scrim facing sheets and scrim of a previously disclosed strip. The foam is significantly reinforced, joined to the previously deposited structure and foaming components are isolated from depositing apparatus.

Abstract: An improved method and article are provided for cryogenic construction and the article is particularly useful when employed with the spiral generation method of applying insulation. An insulating member is provided having a face member having an elongate cross-section and a plurality of backing members also of elongate cross-section adhered to a face of the backing member. Fracturing of the insulation on temperature cycling is substantially reduced.