Ddp Specialty Electronic Materials Us, LLC

Dupont Safety & Construction, Inc.

Dow Global Technolgoies LLC

Other

Lars Massueger

Eric Huebsch

Cedric Thomi

Alain Sagnard

Steven P Crain

Jean-Francois Koenig

Ralph Schmidt

Carolin Boehm

An article comprising a tube having a length L, a width W and a height H, wherein the tube has peripheral areas comprising an upper section, a lower section, an inner section, and an outer section, and the tube comprises a tube wall having an inner layer and an outer layer, the inner layer being a nonwoven fabric and the outer layer being a semipermeable membrane that is permeable to vapors but impermeable to liquids, wherein the tube has at least one inlet port integrated into the tube wall to permit the flow of fluid into the tube interior, wherein the tube has a through-thickness Gurley air permeability of from 1 to 2,000 seconds, and the tube has a tensile modulus in the L direction of from 300 to 450 MPa and from 200 to 320 MPa in the W direction, and wherein the upper section and/or the lower section of the tube has at least one slot in the outer layer extending at least partially along the length L of tube and centered in said upper and/or lower section, and wherein the inner layer forms the outer surface of the tube in that at least one slot.

Foam envelope for sealing large volumes

An article comprises a tube having peripheral areas, including an upper section, a lower section, an inner section, and an outer section, the tube further comprising a tube wall having an inner layer and an outer layer, the inner layer being a nonwoven fabric and the outer layer being a semipermeable membrane that is permeable to vapors but impermeable to liquids, and the tube further comprising at least one inlet port integrated into the tube wall to permit the flow of an activated or activatable foamable composition into the tube interior, wherein the tube further has a plurality of holes that penetrate through the inner and outer layers of the tube to allow expanding foam to both fill the interior of the tube and exit the tube and fill a space exterior to the tube.

An article comprises a tube having peripheral areas, including an upper section, a lower section, an inner section, and an outer section, the tube further comprising a tube wall having an inner layer and an outer layer, the inner layer being a semipermeable membrane that is permeable to vapors but impermeable to liquids and the outer layer being a nonwoven fabric, and the tube further comprising at least one inlet port integrated into the tube wall to permit the flow of an activated or activatable foamable composition into the tube interior, wherein the tube further has a plurality of holes that penetrate through the inner and outer layers of the tube to allow expanding foam to both fill the interior of the tube and exit the tube and fill a space exterior to the tube.

An article comprises a tube and at least one thermoplastic pouch inserted within the tube wherein the tube comprises an upper section, a lower section, an inner section and an outer section, the tube comprises an inner layer and an outer layer, the inner layer being a semipermeable membrane that is permeable to vapors but impermeable to liquids and the outer layer being a nonwoven fabric, the tube has a plurality of holes that penetrate through the inner and outer layers of the upper section and/or lower section of the tube, the pouch is located within the tube such that it contacts the lower and inner sections of the tube and the pouch contains a foamable composition.

An article comprises a tube and at least one thermoplastic pouch inserted within the tube wherein the tube comprises an upper section, a lower section, an inner section and an outer section, the tube comprises an inner layer and an outer layer, the inner layer being a permeable nonwoven fabric and the outer layer being a semipermeable membrane that is permeable to vapors but impermeable to liquids, the tube has a plurality of holes that penetrate through the inner and outer layers of the upper section and/or lower section of the tube, the pouch is located within the tube such that it contacts the lower and inner sections of the tube and the pouch contains a foamable composition.

An article comprises a tube and at least one thermoplastic pouch inserted within the tube wherein the tube comprises an upper section, a lower section, an inner section and an outer section, the tube comprises an inner layer and an outer layer, the inner layer being a permeable membrane that is permeable to vapors but impermeable to liquids and the outer layer being a nonwoven fabric, a microporous film, an SMS sheet or an SMMS sheet. In the central area of the upper sectionand/or the lower sectionof the tube, at least one slot is cut into the outer layerto reveal the inner layer, the slot extending at least partially along the tube length L, the pouch is located within the tube such that it contacts the lower and inner sections of the tube and the pouch contains a foamable composition.

An articlecomprises a tube and at least one thermoplastic pouch inserted within the tube wherein the tube comprises an upper section, a lower section, an inner section and an outer section, the tube comprises a semi-permeable single layer of a nonwoven sheet of flashspun polyethylene or a microporous film stabilized by an open weave fabric or scrim, the tube has a plurality of holes that penetrate through the tube in the upper section and/or the lower section of the tube, the pouch is located within the tube such that it contacts the lower and inner sections of the tube and the pouch contains a foamable composition.

A one component spray polyurethane foam formulation containing a polymeric isocyanate with nominal functionality of 2.5 to 3.5, a polyol component that is at least 85 percent aliphatic and having a mole ratio of polyol with three or more functionality to total polyol of 0.2 to 0.75, 15-30 wt % of a plasticizer, 1.5-3.5 wt % phosphorous, 5.5 to 11.5 halogen and 1.5 to 5 millimoles of blowing agent per gram of formulation and that is free of expandable graphite achieves a B2 rating in DIN 4102 testing.

B2 rated one component spray polyurethane foam formulation for fenestration openings

A pipe insulation system that serves as insulation for a length of pipe contains section of thermoplastic polymer foam that fit circumferentially around a length of pipe, rings of melt barrier material that fit circumferentially around the length of pipe and abut adjacent sections of thermoplastic foam, mesh around the sections of thermoplastic polymer foam and rings of melt barrier material, a metallic covering enclosing the thermoplastic polymer foam, melt barrier material and mesh, and a support band that fits circumferentially around the metallic covering and that holds the pipe insulation system against a length of pipe around which the pipe insulation resides. A ring of melt barrier material is present at the top and bottom of non-horizontal length of pipe and within any 250 centimeter distance along the length of pipe.

Polymeric foam insulation system for pipes

An article with at least two extruded thermoplastic polymer foam pieces that fit together to form a length of foam having a generally annular cross section, each piece having a concave surface such that the concave surfaces adjoin to form an internal edge defining a hole within the generally annular cross section; wherein each piece has a density less than 36 kilograms per cubic meter, a product of density times average cell size that is less than 17 millimeters*kilogram per cubic meter, and a thermal conductivity of 35 milliwatts per meter*Kelvin or less.

Thermoplastic polymeric foam pipe insulation

A wall insulation system includes a thermoplastic polymer foam board, ribs of melt barrier material extending horizontally across the width of the thermoplastic polymer foam board and a metallic facing bonded to the outside surface of the thermoplastic polymer foam board and covering the outside primary surface of the thermoplastic polymer foam board and any ribs exposed along the outside primary surface of the thermoplastic polymer foam board. A rib of melt barrier material extends across the width of the thermoplastic polymer foam board in any 50 centimeter distance along the height of the foam board.

Growing community of inventors

Zurich, Switzerland

Lars Massueger