Method of providing insulation to a structure

Patent metadata

Field	Value
Publication number	US-2020308355-A1
Application number	US-201716300608-A
Country	US
Kind code	A1
Filing date	May 11, 2017
Priority date	May 13, 2016
Publication date	Oct 1, 2020
Grant date	—

Abstract

The present invention relates to a method of providing thermal and/or acoustic insulation to a structure, comprising the steps of: providing a substrate which comprises fibres; applying the substrate to the structure; blending the substrate with a binder composition before, during or after application of the substrate to the structure; allowing curing of the binder composition after the substrate and the binder composition have been applied to the structure; wherein the binder composition comprises at least one hydrocolloid. The present invention also relates to an insulated structure obtainable by said method.

First claim

1 . A method of providing thermal and/or acoustic insulation to a structure, comprising the steps of:
providing a substrate which comprises fibres; applying the substrate to the structure; blending the substrate with a binder composition before, during or after application of the substrate to the structure; allowing curing of the binder composition after the substrate and the binder composition have been applied to the structure;
wherein the binder composition comprises at least one hydrocolloid.

2 . The method according to claim 1 , wherein the substrate does not comprise mineral wool.

3 . The method according to claim 1 , wherein the substrate comprises fibres which are mineral fibres.

4 . The method according to claim 1 , wherein the substrate also comprises a particulate material.

5 . The method according to claim 4 , wherein the substrate comprises particulate material selected from the group consisting of aerogel, perlite, vermiculite, xonolite, phase-change material, micro-spheres and fire retardant.

6 . The method according to claim 1 , wherein the fibres do not comprise any binder composition before the substrate is blended with the binder composition.

7 . The method according to claim 1 , wherein the fibres are in the form of a granulate of flocks of fibres bonded with a cured binder composition.

8 . The method according to claim 1 , wherein the structure is any one of a wall, a cavity wall, a ceiling, a floor, an attic, or a roof of a building or a building component.

9 . The method according to claim 1 wherein the step of blending the substrate with the binder composition occurs during application of the substrate to the structure, by simultaneously applying the substrate and the binder composition to the structure.

10 . The method according to claim 9 , wherein the substrate and the binder composition are applied simultaneously by spraying.

11 . The method according to claim 1 , wherein curing of the binder composition occurs at temperatures from 5 to 95° C., such as 5 to 80° C., such as 8 to 50° C. preferably 10 to 40° C.

12 . The method according to claim 1 , wherein curing of the binder composition occurs at ambient temperature.

13 . The method according to claim 1 , wherein the step of blending the substrate with the binder composition occurs not more than 20 minutes before application of the substrate to the structure, preferably not more than 10 minutes, most preferably not more than 5 minutes.

14 . The method according to claim 1 , wherein the at least one hydrocolloid is selected from the group consisting of gelatine, pectin, starch, alginate, agar agar, carrageenan, gellan gum, guar gum, gum arabic, locust bean gum, xanthan gum, cellulose derivatives such as carboxymethylcellulose, arabinoxylan, cellulose, curdlan, β-glucan.

15 . The method according to claim 1 , wherein the at least one hydrocolloid is a polyelectrolytic hydrocolloid.

16 . The method according to claim 15 , wherein the at least one hydrocolloid is selected from the group consisting of gelatine, pectin, alginate, carrageenan, gum arabic, xanthan gum, cellulose derivatives such as carboxymethylcellulose.

17 . The method according to claim 1 , wherein the binder composition comprises at least two hydrocolloids, wherein one hydrocolloid is gelatine and the at least one other hydrocolloid is selected from the group consisting of pectin, starch, alginate, agar agar, carrageenan, gellan gum, guar gum, gum arabic, locust bean gum, xanthan gum, cellulose derivatives such as carboxymethylcellulose, arabinoxylan, cellulose, curdlan, β-glucan.

18 . The method according to claim 14 , wherein the gelatine is present in the binder composition in an amount of 10 to 95 wt.-%, such as 20 to 80 wt.-%, such as 30 to 70 wt.-%, such as 40 to 60 wt.-%, based on the weight of the hydrocolloids.

19 . The method according to claim 17 , wherein the one hydrocolloid and the at least other hydrocolloid have complementary charges.

20 . The method according to claim 1 , wherein the binder composition is not a thermoset binder.

21 . The method according to claim 1 , wherein the binder composition does not contain a poly(meth)acrylic acid, a salt of a poly(meth)acrylic acid or an ester of a poly(meth)acrylic acid.

22 . The method according to claim 1 , wherein the at least one hydrocolloid is a biopolymer or modified biopolymer.

23 . The method according to claim 1 , wherein the binder composition comprises proteins from animal sources, including collagen, gelatine and hydrolysed gelatine, and the binder composition further comprises at least one phenol and/or quinone containing compound, such as tannin selected from one or more components from the group consisting of tannic acid, condensed tannins (proanthocyanidins), hydrolysable tannins, gallotannins, ellagitannins, complex tannins, and/or tannin originating from one or more of oak, chestnut, staghorn sumac and fringe cups.

24 . The method according to claim 1 , wherein the binder composition comprises gelatine, and the binder composition further comprises a tannin selected from one or more components from the group consisting of tannic acid, condensed tannins (proanthocyanidins), hydrolysable tannins, gallotannins, ellagitannins, complex tannins, and/or tannin originating from one or more of oak, chestnut, staghorn sumac and fringe cups, preferably tannic acid.

25 . The method according to claim 1 , wherein the binder composition comprises proteins from animal sources, including collagen, gelatine and hydrolysed gelatine, and wherein the binder composition further comprises at least one enzyme selected from the group consisting of transglutaminase (EC 2.3.2.13), protein disulfide isomerase (EC 5.3.4.1), thiol oxidase (EC 1.8.3.2), polyphenol oxidase (EC 1.14.18.1), in particular catechol oxidase, tyrosine oxidase, and phenoloxidase, lysyl oxidase (EC 1.4.3.13), and peroxidase (EC 1.11.1.7).

26 . The method according to claim 1 , wherein the binder composition comprises gelatine, and wherein the binder composition further comprises at least one enzyme which is a transglutaminase (EC 2.3.2.13).

27 . The method according to claim 1 , wherein the binder composition is formaldehyde-free.

28 . The method according to any preceding claim, wherein the binder composition consists essentially of
at least one hydrocolloid; optionally at least one oil; optionally at least one pH-adjuster; optionally at least one crosslinker; optionally at least one anti-fouling agent; optionally at least one anti-swelling agent; water.

29 . The method according to claim 1 , wherein the method does not involve crosslinking of the binder composition.

30 . The method according to claim 1 , wherein the method does involve crosslinking of the binder composition.

31 . The method according to claim 1 , wherein the curing process comprises a drying process, in particular by blowing air or gas over/through the substrate or by increasing temperature.

32 . An insulated structure obtainable by the method according to claim 1 .

33 . An insulated structure according to claim 32 , which is any one of a wall, a cavity wall, a ceiling, a floor, an attic, or a roof of a building or a building component.

34 .

Assignees

• Rockwool Int

Inventors

• Hjelmgaard Thomas
• Hald Lars
• Tielemann Thomas

Classifications

• D04H1/4266

  Natural fibres not provided for in group D04H1/425 · CPC title

• B32B37/12 Primary

  characterised by using adhesives · CPC title

• C08J5/043

  with glass fibres · CPC title

• B32B2317/00

  Animal or vegetable based · CPC title

• B32B2309/02

  Temperature · CPC title