A multilayer tape assembly is described which can be used with insulation jacketing and particularly for self sealing lap (SSL) applications. The tape assembly includes two adhesive layers with associated carrier and release layers in conjunction with a differential release system. Various methods of use are also described.

A flexible ventilation duct production method includes forming an inner layer using at least one of aluminum PET, polyester, metalized OPP, metalized polyester and PVC; forming an insulation layer comprised of rubber, polyethylene liners, polyester fibers or similar insulation materials; assembling a steel wire taking shape from being spirally wound around a cylinder; forming an outer layer using at least one of aluminum PET, polyester, metalized OPP, metalized polyester and PVC; and laminating by being wound to a constantly rotating cylindrical shaft in a certain order to form an integrated, holistic structure between all the factors, which is constantly rotated around its own axis in strip plates and is constantly fed to the mentioned cylindrical shaft, by meanwhile providing complete lamination with the applied chemicals.

A ductwork system including a temperature modulating blanket with phase change material. The system allows for attic installation of ductwork while substantially avoiding effects of excessive temperatures and temperature gradients of the attic space on conditioned air run through the ductwork. Thus, smaller HVAC and overall power requirements may be realized for air conditioning applications in structural facilities. This may be of particular benefit for structural facilities retrofitted with HVAC systems where attic space is more likely to be made greater use of for accommodating ductwork.

A fire-rated ventilation duct system and improvements therein. According to an embodiment, the fire-rated ventilation duct section comprises, an inner liner configured as conduit for air movement, the inner liner comprising a metallic material and having a first end and a second end, and the first end including a first connection section, and the second end including a second connection section; an outer casing configured for encasing the inner liner, the outer casing comprising a metallic material having a fire-rating, the outer casing having a first end and a second end, and the first end including a first duct connection section configured for joining one end of a second fire-rated ventilation duct, and the second end including a second duct connection section configured for joining one end of a third fire-rated ventilation duct; an insulation layer configured to provide a thermal insulation layer between the inner liner and the outer casing, and the first connection section of the inner liner further comprising a first liner spacer and the second connection section of the inner liner further comprising a second liner spacer, the first and the second liner spacers being configured to define a cavity for receiving and positioning said insulation layer between an outer surface of the inner liner and an inner surface of the outer casing; the first duct connection section of the outer casing being configured to attach to at least a portion of the first connection section of the inner liner, and the second duct connection section of the outer casing being configured to attach to at least a portion of the second connection section of the inner liner to form a sealed duct section.

The invention provides an HVAC duct having an inner composite tube and an outer composite tube. The inner composite tube has an interior metal wall, a primary foam wall, and an exterior metal wall. The outer composite tube has an interior metal wall, a secondary foam wall, and an exterior metal wall. In certain embodiments, the inner composite tube is nested inside the outer composite tube in an end-offset configuration. In these embodiments, the first end of the duct defines a male detent having a radially-outward-facing metal engagement face projecting beyond the interior metal wall of the outer composite tube, whereas the second end of the duct defines a female detent having a radially-inward-facing metal engagement face projecting beyond the exterior metal wall of the inner composite tube. Also provided is an HVAC ductwork assembly wherein two ducts of the described nature are connected in an advantageous end-to-end manner.

A ducting system for a heating ventilation and air conditioning (HVAC) application includes a duct assembly having an inner duct member, and an outer duct member disposed around the inner duct such that the outer and inner duct members together define a pre-determined amount of space therebetween. The ducting system also includes a bonding and insulation composite that is disposed in the pre-determined amount of space between the inner and outer duct members to insulate the inner and outer duct members from each other yet adhesively bond with each of the inner and outer duct members for imparting structural rigidity to the duct assembly.

A soundproofing device; the soundproofing device includes a body and a set of soundproofing sections disposed therein. In some embodiments, a soundproofing system is also disclosed herein and includes a set of soundproofing devices. The soundproofing device and the soundproofing system are useful for easy installation into ductwork of a building to provide substantial soundproofing to the same.

The invention is drawn to flexible self-adhesive mineral wool laminate, comprising—a mineral wool insulation mat with a first and second main face, —a first facing laminated onto the first main face of the mineral wool insulation mat, —a second facing which is a double-sided adhesive structure adhered with one if its adhesive faces to the second main face of the mineral wool insulation mat, the other adhesive face being made of or comprising a pressure sensitive adhesive, the laminate being characterized by the fact that the double-sided adhesive structure comprises a plurality of through-holes, and to use of such laminates for insulating metallic sheet ducts or cavities.

A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

A securing device includes at least one rigid ring configured to encircle the pipe, and at least one securing system, rigid and distinct from the ring, including a body which has a first contact face configured to be pressed firmly against and secured to a surface of a structure, and at least one groove in which the ring is housed, the groove being configured to allow the securing system to slide with respect to the ring in a direction of sliding along the ring, while being immobile or near-immobile relative to the ring in a plane perpendicular to the direction of sliding.