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1. WO2020107094 - ROOFING UNDERLAYMENT

Publication Number WO/2020/107094
Publication Date 04.06.2020
International Application No. PCT/CA2018/051526
International Filing Date 29.11.2018
IPC
E04D 5/10 2006.01
EFIXED CONSTRUCTIONS
04BUILDING
DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
5Roof covering by making use of flexible material, e.g. supplied in roll form
10by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
B32B 27/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
06as the main or only constituent of a layer next to another layer of a specific substance
08of synthetic resin of a different kind
B32B 27/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
18characterised by the use of special additives
B32B 7/02 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
7Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
02Physical, chemical or physicochemical properties
CPC
B32B 27/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
06as the main or only constituent of a layer, ; which is next to another layer of the same or of a different material
08of synthetic resin
B32B 27/18
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
18characterised by the use of special additives
B32B 7/02
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
7Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
02Physical, chemical or physicochemical properties
E04D 5/10
EFIXED CONSTRUCTIONS
04BUILDING
DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
5Roof covering by making use of flexible material, e.g. supplied in roll form
10by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
Applicants
  • FT SYNTHETICS INC. [CA]/[CA]
Inventors
  • SANDHAR, Gurpreet S.
  • ROBSON, Kenneth Russell
  • KHEDRI, Sahar
Agents
  • MCGRUDER, David J.
  • GREEN, Bruce M.
  • BAILEY, Thomas W.
  • MANNING, Gavin N.
  • KONDOR, George F.
  • SUE, Hilton W.C.
  • ASH, Craig A.
  • RATTRAY, Todd A.
  • TAKAGAWA, David H.
  • MARLES, Jennifer A.
  • JONES, Roni M.
  • KWOK, Christina S.W.
  • BUONASSISI, Alexander D.
  • MELNYCHUK, Stephanie A.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ROOFING UNDERLAYMENT
(FR) SOUS-COUCHE DE TOITURE
Abstract
(EN)
A breathable synthetic roofing underlayment (10) having a hydrophobic nonwoven layer (12) on top to deflect water, a liquid water-resistant and vapour-permeable membrane layer (14) in the middle, and a bottom nonwoven layer (16) which is hydrophilic and has rapid and high liquid water absorbency. This accelerates the movement of liquid water from a roofing deck (18) into the nonwoven bottom layer (16) and increases the rate of transfer of water through the underlayment. The bottom layer comprises a carrier resin and a hydrophilic agent, which may be a polyamide such as polycaprolactam (Nylon 6) or poly(hexamethylene adipamide), a polysorbate or other composition. The underlayment is especially useful for application to wet roofing decks.
(FR)
Sous-couche de toiture synthétique perméable à l'air (10) comportant une couche non tissée hydrophobe (12) sur le dessus pour dévier l'eau, une couche de membrane centrale imperméable à l'eau liquide et perméable à la vapeur (14), et une couche hydrophile non-tissé inférieure (16) et à capacité d'absorption d'eau liquide rapide et élevée. Ceci accélère le mouvement de l'eau liquide d'un platelage de toiture (18) dans la couche inférieure non tissée (16) et augmente la vitesse de transfert d'eau à travers la sous-couche. La couche inférieure comprend une résine support et un agent hydrophile, qui peut être un polyamide tel que le polycaprolactame (Nylon 6) ou le poly (hexaméthylène adipamide), un polysorbate ou une autre composition. La sous-couche est particulièrement utile pour une application sur des platelages de toiture humides.
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