Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F13/00—Coverings or linings, e.g. for walls or ceilings
  • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
  • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
  • E04F13/0885—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements specially adapted for being adhesively fixed to the wall; Fastening means therefor; Fixing by means of plastics materials hardening after application
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F13/00—Coverings or linings, e.g. for walls or ceilings
  • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
  • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
  • E04F13/18—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of organic plastics with or without reinforcements or filling materials or with an outer layer of organic plastics with or without reinforcements or filling materials; plastic tiles
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
  • E04F21/023—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls for applying adhesive, e.g. glue or mortar, on the covering elements, in particular tiles

Definitions

• the present invention relates to the field of wall covering panels and their installation method.
• the acrylic glue is applied using a notched spatula and then, after waiting for a recommended drying time, i.e. a time for the glue to dry, the panel is positioned on the glue and pressed against the wall to be covered.
• One of the aims of the invention is to overcome the drawbacks of the prior art, by proposing a method of installing a polymer panel on a wall to create a wall covering, which makes it possible to reduce, or even avoid, problems linked to thermal expansion.
• Another goal is to provide such a process that is simple with a short exposure time.
• Another objective is to provide such a process whose implementation generates little or no VOCs.
• adhesives based on silane-modified polymers make it possible to reduce or even eliminate thermal expansion problems.
• adhesives based on silane-modified polymers are not used for full-surface bonding, and even less so for bonding an element with a large surface area, greater than 2.5 m 2 , or for wall covering applications. They are more commonly used for bonding two parts together made of heterogeneous materials.
• the invention makes it possible to lay panels side by side with little or no play between them, and without the need to make joints or to cut the panel into small dimensions.
• Another advantage is that this type of glue does not contain isocyanate.
• Bonding the entire surface of the panel also helps, in addition to retaining thermal expansion of the panel, to reduce the spread of fire by avoiding drafts and chimney effects between the panel and the wall during a fire.
• the Applicant uses a silane-modified polymer-based adhesive whose viscosity has been modified compared to commonly available adhesives of this type, and which is of the order of 50 to 500 Pa.s at 20 rpm, preferably 75 to 200 Pa.s at 20 rpm measured at 20°C according to a measurement carried out with a “Brookfield” type rotational viscometer with spindle No. 7, which measures the viscosity by analyzing the torque required to rotate the spindle at a constant speed in an immersed liquid. The torque is proportional to the viscous drag on the spindle and therefore to the viscosity of the sample.
• This viscosity makes it easier to apply the glue, especially with a spatula, preferably notched.
• the glue can be applied to vertical surfaces without creep.
• the layer of glue is applied to the wall against which the panel is intended to be placed, and to a surface corresponding at least to that of the panel, the process then consisting of placing the panel on the layer of glue.
• the glue is applied in a quantity between 100 and 500 g/ m2 , preferably between 250 and 320 g/ m2 , which is sufficient to retain the thermal expansions of the panel.
• the invention makes it possible to bond polymer panels having a thickness of between 1 and 6 mm, preferably between 1 and 3 mm, for example 2 mm, and a dimension greater than 2.5 m, or even 3 m.
• the invention also relates to wall covering in the form of at least one panel glued full surface against a wall, with an adhesive based on silane modified polymers.
• the invention relates to a particular method of installing one or more panels made from a polymer, such as PVC, PET, or PETg, on a vertical wall to create a wall covering.
• a polymer such as PVC, PET, or PETg
• the vertical wall consists of a wall made of plasterboard or fiber cement, bricks, cement, tiles, wood, concrete or any other material.
• the invention consists in gluing the panel with a glue based on silane-modified polymers in order to limit, or even eliminate, the phenomena of thermal expansion that the installed panels may undergo, including with panels with a thickness of between 1 and 6 mm, preferably between 1 and 3 mm, for example 2 mm, of large dimensions, such as a width or length greater than 2.5 m, or even 3 m.
• the glue used is for example a polymer glue, without solvent, with a siloxane or silicone as the main chain (Si-O-Si), in which the silicon may be substituted with a hydrogen atom and/or a carbon group, and with ends terminated by a silane or a siloxane, such as a methoxysilane or trime-thoxyphenylsilane or a trimethoxyvinylsilane.
• the glue is a thixotropic one-component glue, and also includes mineral fillers, and additives.
• the adhesive based on silane modified polymers has a lower peel strength than that of acrylic adhesive due to the molecular structure of the silane modified polymer, so the use of this type of adhesive to limit thermal expansion phenomena of the panel is not obvious.
• the glue used has a viscosity of the order of 50 to 500 Pa.s at 20 rpm, preferably 75 to 200 Pa.s at 20 rpm measured at 20°C according to a measurement with a rotating viscometer of the “Brookfield” type with spindle no. 7 and is preferably applied with a glue spatula, preferably notched type A2, according to the TKB A2 standard.
• the invention consists in uniformly applying a layer of adhesive to the vertical wall using a notched spatula of type A2.
• the adhesive should preferably be acclimatized to room temperature.
• the vertical wall should be dry and clean and degreased. Installation in a humid environment is also possible because water allows the adhesive based on silane-modified polymers to set more quickly.
• the layer of glue must cover a surface corresponding at least to that of the panel to be glued, and must be applied with a quantity of the order of 100 to 500 g/ m2 , preferably 250 to 320 g/ m2 .
• the temperature of the room in which the panel is to be installed is between 18 and 25 °C
• the temperature of the vertical wall is above 15 °C
• the relative humidity of the air is below 65%.
• Low temperature and low air humidity extend the working, setting and drying times, high temperature and high air humidity reduce them.
• the invention therefore makes it possible to limit or even eliminate thermal expansion phenomena of the panels, and therefore the need to cut the panels into small dimensions, to leave gaps between the panels or to make joints.
• the installation is carried out in a humid environment, it will always be possible to make a joint to guarantee watertightness.
• the installation time and the inherent costs are reduced, without affecting the general aesthetics of the installed covering.
• Tests were carried out on PVC and PETg panels 800 mm to 900 mm long and 300 mm wide laid on plasterboard and fibre cement boards, at 23°C ambient temperature, and then carrying out temperature variations (delta up to 32°C, from 23 to 55°C or delta of 27°C between 11°C and 38°C) in cycling.
• the expansion is greater than 0.15 mm / ml / 5°C, i.e. an expansion coefficient greater than 3.10 -5 °C -1 , and greater than 0.2 mm / ml / 5°C, i.e. an expansion coefficient greater than 4.2.10 -5 °C -1 when the panels are free (not glued).
• Shear strength tests were also carried out by the Applicant in order to determine the average resistance of the material when subjected to a displacement parallel to its support.
• the shear measurements are carried out in accordance with standard NF EN 1373.
• the invention therefore makes it possible to provide a method of installing panels, and the wall covering obtained, which make it possible to reduce, or even avoid, problems linked to thermal expansion, while presenting satisfactory shear resistance.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Finishing Walls (AREA)
• Panels For Use In Building Construction (AREA)
• Application Of Or Painting With Fluid Materials (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=87554762

Family Applications (1)

Country Status (2)

Citations (3)

• 2023
  • 2023-02-07 FR FR2301123A patent/FR3145580B1/fr active Active
• 2024
  • 2024-02-06 EP EP24155937.6A patent/EP4414520A1/de active Pending

Patent Citations (3)

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