초록 ▼

The invention concerns an under-roof screen (100) comprising: a first layer (102) produced from a first metallic or metallized material forming a thermal reflection barrier;a second layer (108) produced from a second woven material bonded to the first layer (102);a third layer (106) produced from a

The invention concerns an under-roof screen (100) comprising: a first layer (102) produced from a first metallic or metallized material forming a thermal reflection barrier;a second layer (108) produced from a second woven material bonded to the first layer (102);a third layer (106) produced from a third insulating material and bonded to the second layer (108); anda fourth layer (104) produced from a fourth metallic or metallized material forming a thermal reflection barrier and bonded to the third layer (106);the first layer (102) and the second layer (108) being provided with micro-perforations (110) providing permeability to water vapor and impermeability to water and the fourth layer (104) being provided with perforations (112) providing permeability to water vapor.

대표청구항 ▼

1. Under-roof screen (100) comprising: a first layer (102) produced from a first metallic or metallised material forming a thermal reflection barrier;a second layer (108) produced from a woven material and bonded to the first layer (102);a third layer (106) produced from an insulating material and b

1. Under-roof screen (100) comprising: a first layer (102) produced from a first metallic or metallised material forming a thermal reflection barrier;a second layer (108) produced from a woven material and bonded to the first layer (102);a third layer (106) produced from an insulating material and bonded to the second layer (108); anda fourth layer (104) produced from a second metallic or metallised material forming a thermal reflection barrier and bonded to the third layer (106),wherein the first layer (102) and the second layer (108) are provided with micro-perforations (110) providing permeability to water vapour and impermeability to water and the micro-perforations (110) are aligned through the first and second layers (102, 108), and wherein the fourth layer (104) is provided with perforations (112) providing permeability to water vapour and the micro-perforations (110) are smaller in size than the perforations (112). 2. Under-roof screen (100) according to claim 1, characterised in that the bonding of the first through fourth layers (102, 108, 106, 104) together is effected by thermal bonding. 3. Under-roof screen (100) according to claim 1, characterised in that the diameter of the micro-perforations (110) is less than or equal to 20 μm. 4. Under-roof screen (100) according to claim 1, characterised in that the first material and the fourth material are aluminium or an aluminised material. 5. Under-roof screen (100) according to claim 1, characterised in that the woven material is woven glass fibre. 6. Under-roof screen (100) according to claim 1, characterised in that the insulating material is non-woven glass fibre. 7. Under-roof screen (100) according to claim 1, characterised in that it comprises a fifth layer (120) produced from a fifth breathing material, the said fifth layer (120) being bonded between the second layer (108) and the third layer (106). 8. Under-roof screen (100) according to claim 7, characterised in that the fifth breathing material is of the polyethylene, polyurethane or polypropylene type, or a mixture of these products with calcium carbonate. 9. Under-roof screen (100) according to claim 1, characterised in that it comprises a sixth layer (302) produced from a sixth material consisting of a woven sheet bonded to the fourth layer (104) and disposed between the third layer (106) and the fourth layer (104). 10. Under-roof screen (100) according to claim 9, characterised in that the sixth layer (302) is provided with perforations (304) aligned with the perforations (112) in the fourth layer (104). 11. Under-roof screen (100) according to claim 8, characterised in that the sixth material consists of a woven sheet made from glass fibre. 12. Method of manufacturing an under-roof screen (100) according to claim 1, characterised in that the method comprises: a step of supplying a first layer (102) produced from a first metallic or metallised material forming a thermal reflection barrier;a step of supplying a second layer (108) produced from a woven material;a step of bonding the second layer (108) to the first layer (102);a step of supplying a third layer (106) produced from a insulating material;a step of bonding the third layer (106) to the second layer (108) thus bonded;a step of supplying a fourth layer (104) produced from a second metallic or metallised material forming a thermal reflection barrier;a step of bonding the fourth layer (104) to the third layer (106) thus bonded;a step of producing, in the first layer (102) and second layer (108), micro-perforations (110) providing permeability to water vapour and impermeability to water, wherein the micro-perforations (110) are aligned through the first and second layers (102, 108); anda step of producing, in the fourth layer (104), perforations (112) providing permeability to water vapour, wherein the micro-perforations (110) are smaller in size than the perforations (112). 13. Method of manufacturing an under-roof screen (100) according to claim 7, characterised in that the method comprises: a step of supplying a first layer (102) produced from a first metallic or metallised material forming a thermal reflection barrier;a step of supplying a second layer (108) produced from a woven material;a step of bonding the second layer (108) to the first layer (102);a step of supplying a fifth layer (120) produced from a fifth breathing material;a step of bonding the fifth layer (120) to the second layer (108) thus bonded;a step of supplying a third layer (106) produced from a insulating material;a step of bonding the third layer (106) to the fifth layer (120) thus bonded;a step of supplying a fourth layer (104) produced from a second metallic or metallised material forming a thermal reflection barrier;a step of bonding the fourth layer (104) to the third layer (106) thus bonded;a step of producing, in the first layer (102) and second layer (108), micro-perforations (110) providing permeability to water vapour and impermeability to water, wherein the micro-perforations (110) are aligned through the first and second layers (102, 108); anda step of producing, in the fourth layer (104), perforations (112) providing permeability to water vapour, wherein the micro-perforations (110) are smaller in size than the perforations (112).