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EP-4741595-A1 - INSULATING PANEL, INSULATING DOWEL AND INSULATING SYSTEM

EP4741595A1EP 4741595 A1EP4741595 A1EP 4741595A1EP-4741595-A1

Abstract

According to the invention, an at least two-layer insulation board (10) is proposed, comprising a first layer (11) of straw and a second layer (12) of wood fibers.

Inventors

  • Unger, Anka

Assignees

  • Udi Dämmsysteme GmbH

Dates

Publication Date
20260513
Application Date
20241106

Claims (15)

  1. Insulation board (10) consisting of at least two layers, with a first layer (11) comprising straw and a second layer (12) comprising wood fibers.
  2. Insulation board according to claim 1, characterized in that the first layer (11) contains a proportion of more than 90 wt.%, preferably more than 95 wt.%, straw.
  3. Insulation board according to claim 1 or 2, characterized in that the second layer (12) has a proportion of more than 90 wt.%, preferably more than 95 wt.%, wood fibers.
  4. Insulation board according to one of the preceding claims, characterized in that the first layer (11) has a bulk density between 100 kg/m 3 and 220 kg/m 3 and the second layer (12) has a bulk density between 20 kg/m 3 and 100 kg/m 3 .
  5. Insulation board according to one of the preceding claims, characterized in that the insulation board (10) is provided with an insect repellent.
  6. Insulation board according to claim 5, characterized by the fact that the insect repellent is a plant-based insect repellent, for example based on neem oil, cedar oil or pyrethrum.
  7. Insulation board according to claim 5 or 6, characterized in that the insect repellent is integrated into the first layer (11) and/or second layer (12), in particular by application to the wood fibers and/or the straw.
  8. Insulation dowel (20) for fixing an insulation board (10), in particular an insulation board (10) according to one of the preceding claims, which is formed in two parts with a base part (30) and a head part (40), wherein the base part (30) has a shaft (31) and at least one expanding element (35) adjoining the shaft (31), and wherein the shaft (31) has at least one fin (32) extending in a longitudinal direction.
  9. Insulation anchor according to claim 8, characterized in that the shaft (31) has at least two, preferably at least four, longitudinally extending fins (32).
  10. Insulation anchors according to claim 8 or 9, characterized in that the shaft (31) has an arrow-shaped entry opening (33).
  11. Insulation anchor according to one of claims 8 to 10, characterized in that the head part (40) has a guide sleeve (42) and a contact plate (41) arranged at one end of the guide sleeve (42).
  12. Insulation anchor according to one of claims 8 to 11, characterized in that the head part (40), in particular the guide sleeve (42) of the head part (40), at least has two, preferably four radial barbs (43).
  13. Insulation anchor according to one of claims 8 to 12, characterized in that the insulation dowel (10), in particular the base part (30) of the insulation dowel (10), comprises a moisture sensor (37).
  14. Insulation anchor according to claim 13, characterized in that the humidity sensor (37) has a data interface for wireless data transmission to a monitoring system.
  15. Insulation system comprising an insulation board (10) according to one of claims 1 to 7, an insulation dowel (30) according to one of claims 8 to 14 and a screw (50).

Description

The present invention relates to an insulation board, an insulation anchor and an insulation system comprising an insulation board, an insulation anchor and a screw. In view of the scarcity and rising cost of energy in recent years, the thermal insulation of buildings to save heating energy has become increasingly important. Common insulation materials include foamed plastics such as polystyrene or polyurethane, mineral wool, glass wool or foam glass, mineral foams, wood fiber materials, plant or animal fibers, or reed boards. Insulation materials made from renewable raw materials, such as wood fiber boards, cork, or similar materials, are becoming increasingly popular. Examples of insulation materials made from renewable raw materials include lignocellulose insulation boards, also known as wood fiber insulation boards or wood fiber insulating boards. These are formatted, soft fiberboards manufactured using either a dry or wet process, in which the fiber material is shaped and, if necessary, dried. Such insulation boards are widely used in construction for sound and heat insulation. It is also known to construct insulation boards based on lignocellulose from several layers of different bulk density, whereby a distinction is made, for example, between load-bearing layers, which have a higher bulk density and are responsible for the stability and stiffness of the insulation board, and the actual insulation layers with a lower bulk density. Multi-layer lignocellulose insulation boards are also available from the DE 295 17 568 U1 It is known that the individual layers of the insulation board consist of lignocellulose layers with different densities, bonded together. The actual insulation layer, or contact layer, with which the insulation board is applied to the substrate to be insulated, has a density of 155 kg/ m³ to 180 kg/ m³ . This density provides the insulation layer with sufficient strength to be attached directly to the masonry or the substrate to be insulated. However, particularly with uneven substrates, this type of attachment often presents difficulties in achieving smooth exterior surfaces that can subsequently be easily plastered or wallpapered. The EP 2 216 454 A1 Disclosing a two-layer modular combined insulation board based on lignocellulose, comprising a flexurally rigid first insulation board having a bulk density between 180 kg/m 3 and 280 kg/m 3 as a module carrier board and a flexible second insulation board having a bulk density between 30 kg/m 3 and 80 kg/m 3 as a module compensation board, wherein the module carrier board and the module compensation board are bonded together. Lignocellulose in the form of wood fibers is a renewable raw material, but it is relatively slow to regenerate and expensive. The task was therefore to provide an insulation panel or insulation system that does not have the disadvantages of the state of the art described above. The problem is solved according to the invention by an insulation board according to the features of claim 1, an insulation dowel according to the features of claim 8 and an insulation system according to the features of claim 15. Advantageous embodiments and further developments of the invention are specified in the dependent patent claims. The at least two-layer insulation board according to the invention comprises a first layer comprising straw and a second layer comprising wood fibers. The straw is pressed together with a binder to form the first layer, while the wood fibers are pressed together with a binder to form the second layer. The two layers can be glued or pressed together. Straw is a cost-effective, rapidly renewable agricultural byproduct and can be sourced in an environmentally friendly way. Combining straw with wood fibers utilizes the excellent insulating properties of straw as well as the strength and flexibility of wood fibers. The wood fiber layer forms the contact layer with the substrate to be insulated and, due to its flexibility, can conform to and compensate for unevenness in the substrate. In this way, differences of up to 8 cm on the substrate to be insulated can be seamlessly compensated for. The insulation board can therefore be installed even on uneven surfaces and still form a flat surface on the outside. The straw layer provides thermal insulation and can contribute to moisture regulation by absorbing excess moisture and releasing it back into the room air. By making part of the insulation board from Because the insulation board is made from straw, which is more cost-effective and faster-growing than wood fibers, it can be produced more cheaply and sustainably. The insulation board can be fastened with insulation anchors, eliminating the need for an adhesive layer and minimizing the risk of condensation and mold growth. The result is a more cost-effective, sustainable, flexible, breathable, and non-adhesive insulation board. Preferably, the first layer contains more than 90% by weight, preferably more than 9