Contact layer with a solid filler component

Patent metadata

Field	Value
Publication number	US-10655323-B2
Application number	US-201616061899-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Dec 23, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A contact layer used in waterproofing and roofing applications. The contact layer includes a solid filler component F and a thermoplastic polymer component P. Also directed to a method for producing the contact layer, to a method for binding two substrates to each other, to a method for waterproofing a substrate, to a waterproofed structure, to a method for sealing a surface against water penetration, to a sealed construction for sealing a substrate against water penetration and to use of the contact layer as waterproofing membrane.

First claim

The invention claimed is:

1. A contact layer comprising a solid filler component F and a thermoplastic polymer component P, wherein the amount of the solid filler component F is 10.0-90.0 wt.-% based on the total weight of the contact layer, and the solid filler component F comprises at least one mineral binder selected from hydraulic binders,
wherein the contact layer comprises not more than 2.5 wt.-% of hydrated mineral binders, based on the total weight of the contact layer,
wherein the thermoplastic polymer component P comprises at least one polymer selected from the group consisting of ethylene-vinyl acetate co-polymers (EVA), ethylene-acrylic ester copolymers, ethylene-α-olefin co-polymers, ethylene-propylene co-polymers, polypropylene (PP), polyethylene (PE), polyvinylchloride (PVC), polyethylene terephthalate (PET), polystyrene (PS), polyamides (PA), chlorosulfonated polyethylene (CSPE), ethylene propylene diene rubber (EPDM), and polyisobutylene (PIB), and mixtures thereof, and
wherein a surface of the contact layer has a 3D-average roughness (Sa) according to EN ISO 25178 of at least 10.0 μm.

2. The contact layer according to claim 1 , wherein the solid filler component F contains at least 60.0 wt.-% of mineral binders.

3. The contact layer according to claim 1 , wherein the contact layer has a concrete adhesion strength of at least 10 N/50 mm.

4. The contact layer according to claim 1 , wherein the solid filler component F further comprises at least one mineral binder selected from the group consisting of, non-hydraulic binders, latent hydraulic binders, and pozzolanic binders, and mixtures thereof.

5. The contact layer according to claim 1 , wherein the amount of the thermoplastic polymer component P is 10.0-90.0 wt.-%, based on the total weight of the contact layer.

6. The contact layer according to claim 1 , wherein the contact layer has a thickness of 0.1-50.0 mm.

7. The contact layer according to claim 1 obtainable by extruding a homogenized melt comprising the solid filler component F and the thermoplastic polymer component P through a manifold or a flat die followed by cooling the extruded material between calender cooling rolls.

8. The contact layer according to claim 7 , wherein the homogenized melt is obtainable by melt-processing a composition comprising the solid filler component F and the thermoplastic polymer component P at a temperature, which is above the melting point of point of the thermoplastic polymer component P.

9. The contact layer according to claim 7 , wherein the amount of water in the homogenized melt is less than 1.0 wt.-%.

10. The contact layer according to claim 1 wherein a mass per unit are of the contact layer is in a range of from 300 to 3000 g/m 2 .

11. The contact layer according to claim 1 wherein an amount of the thermoplastic polymer component P is >20 wt.-%.

12. The contact layer according to claim 1 , wherein the thermoplastic polymer component P consists of at least one polymer selected from the group consisting of ethylene-vinyl acetate co-polymers (EVA), ethylene-acrylic ester copolymers, ethylene-α-olefin co-polymers, ethylene-propylene co-polymers, polypropylene (PP), polyethylene (PE), polyvinylchloride (PVC), polyethylene terephthalate (PET), polystyrene (PS), polyamides (PA), chlorosulfonated polyethylene (CSPE), ethylene propylene diene rubber (EPDM), and polyisobutylene (PIB), and mixtures thereof.

13. The contact layer according to claim 1 , wherein
a surface of the contact layer has a 3D-root mean square roughness (Sq) according to EN ISO 25178 of at least 1.0 μm, and
a surface of the contact layer has 3D-maximum surface height (Sz) according to EN ISO 25178 of at least 100.0 μm.

14. A method producing a contact layer according to claim 1 , wherein the method comprises extruding a homogenized melt comprising the solid filler component F and the thermoplastic polymer component P through a manifold or a flat die followed by cooling the extruded material between calender cooling rolls.

15. The method according to claim 14 , wherein the extrusion temperature is 80-250° C., and wherein the extrusion pressure is 20.0-350.0 bar.

16. A method for binding substrates to each other, the method comprising:
a) applying a layer of first adhesive on the surface of a first substrate,
b) covering the layer of the first adhesive with a contact layer according to claim 1 such that a first surface of the contact layer is brought in contact with the layer of the first adhesive,
c) applying a layer of a second adhesive on the second opposite surface of the contact layer and contacting the layer of the second adhesive with the surface of the second substrate or applying a layer of a second adhesive on a surface of the second substrate and contacting the layer of the second adhesive with the second opposite surface of the contact layer,
d) hardening the layers of the first and second adhesives,
wherein at least one of the first and second adhesives is a fresh cementitious composition or a synthetic resin composition.

17. A method for waterproofing a substrate, the method comprising:
applying a contact layer according to claim 1 to a surface of a substrate such that a first surface of the contact layer is directed against the surface of the substrate,
casting a fresh cementitious composition on a second opposing surface of the contact layer, and
hardening the fresh cementitious composition.

18. A waterproofed construction comprising a layer of concrete and a contact layer according to claim 1 arranged between a surface of a substrate and the layer of concrete such that the first surface of the contact layer is directed against the surface of the substrate and the second surface of the contact layer is fully bonded to the layer of concrete.

19. A method for sealing a substrate against water penetration, the method comprising:
applying a layer of adhesive on the surface of the substrate,
covering the layer of the adhesive with a contact layer according to claim 1 such that one of the surfaces of the contact layer is brought in contact with the layer of adhesive, and
hardening the layer of adhesive.

20. A sealed construction comprising a contact layer according to claim 1 and a layer of adhesive arranged between a surface of a substrate and the contact layer such that one of the surfaces of the contact layer is bonded to the surface of the substrate with the layer of adhesive.

21. A method comprising applying the contact layer according to claim 1 as a waterproofing membrane.

22. A contact layer comprising a solid filler component F and a thermoplastic polymer component P, wherein the amount of the solid filler component F is 10.0-90.0 wt.-% based on the total weight of the contact layer, and the solid filler component F comprises at least one mineral binder selected from hydraulic binders,
wherein the contact layer comprises not more than 2.5 wt.-% of hydrated mineral binders, based on the total weight of the contact layer,
wherein the thermoplastic polymer component P comprises at least one polymer selected from the group consisting of ethylene-vinyl acetate co-polymers (EVA), ethylene-acrylic ester copolymers, ethylene-α-olefin co-polymers, ethylene-propylene co-polymers, polypropylene (PP), polyethylene (PE), polyvinylchloride (PVC), polyethylene terephthalate (PET), polystyrene (PS), polyamides (PA), chlorosulfonated polyethylene (CSPE), ethylene propylene diene rubber (EPDM), and polyisobutylene (PIB), and mixture

Assignees

• Sika Tech Ag

Inventors

• Ackermann Herbert
• Hoefflin Frank
• Rohrer Roman
• Gutjahr Lisa
• Z'Rotz Roy
• Schoenbrodt Simon

Classifications

• E04B1/665 Primary

  Sheets or foils impervious to water and water vapor · CPC title

• B28B19/0046

  to plastics · CPC title

• B32B2307/7265

  Non-permeable · CPC title

• B32B13/12

  of synthetic resin · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title