Method for producing a shutter and method for producing a set of two serrated belts

1. A method for producing a shutter ( 2 ) designed to be rolled up and unrolled, comprising:

providing on each face, opposite one another, a serrated belt ( 3 , 4 ) comprising a succession of teeth, and

adjusting the position of the teeth of at least one of the belts ( 3 , 4 ) to permit both belts ( 3 , 4 ) to mesh, by deforming said belt ( 3 , 4 ) in such a way that both belts ( 3 , 4 ) can mesh, and

subsequently stabilizing the mutual position of the belts ( 3 , 4 ) after they are made to mesh,

wherein the position of the teeth of at least one of the belts ( 3 , 4 ) is adjusted when at least a part ( 9 ) of said shutter ( 2 ) is being rolled up simultaneously with the belts ( 3 , 4 ), whereby said part ( 9 ) of the shutter ( 2 ) comprises a lateral edge of said shutter, and the position of the belts ( 3 , 4 ) is subsequently stabilized in relation to the shutter ( 2 ) or in relation to said part ( 9 ) of the shutter ( 2 ), and

wherein the shutter ( 2 ), or said part ( 9 ) is being rolled up while a belt ( 3 ) which is free in relation to the shutter ( 2 ), or in relation to said part ( 9 ), and which is provided opposite one of the faces of the shutter ( 2 ) or of said part ( 9 ), is made to mesh with a belt ( 4 ) which is fixed in relation to the opposite face of the shutter ( 2 ) or of said part ( 9 ), whereby this meshing takes place while the shutter ( 2 ) or said part ( 9 ) is being rolled up, at a place where the two belts ( 3 , 4 ) make contact, after which the free belt ( 3 ) is fixed in relation to the shutter ( 2 ) or in relation to said part ( 9 ), to the face opposite the one with the fixed belt ( 4 ) while the belts ( 3 , 4 ) mesh.

2. The method according to claim 1 , wherein, in order to make the belts ( 3 , 4 ) mesh, the free belt ( 3 ) is stretched in the longitudinal direction while the shutter ( 2 ), or said part ( 9 ) is being rolled up, in such a way that it is extended as a function of the position of the teeth of the fixed belt ( 4 ), and such that both belts ( 3 , 4 ) can mesh.

3. The method according to any of claims 1 and 2 , wherein use is made of serrated belts ( 3 , 4 ) whereby the distance between two successive teeth is larger than the width of the teeth in the longitudinal direction of the belts ( 3 , 4 ).

4. The method according to any of claims 1 and 2 , further comprising applying an adhesive which sets relatively slowly on the back of the above-mentioned free belt ( 3 ) before the latter is rolled up together with the shutter ( 2 ) or said part ( 9 ) of the shutter ( 2 ), such that said belt ( 3 ) is fixed to the shutter ( 2 ) or to said part ( 9 ) in the rolled-up position of the latter after they are made to mesh.

5. The method according to claim 1 , wherein the belts ( 3 , 4 ) are provided on each lateral edge of the shutter ( 2 ).

6. The method according to claim 1 , wherein the lateral edge of the shutter ( 2 ) is formed by said part ( 9 ) which is made up of a flexible strip ( 9 ) to which the above-mentioned belts ( 3 , 4 ) are fixed.

7. The method according to claim 6 , wherein a flexible strip is used whereby one of its serrated belts ( 3 , 4 ) forms a whole with it.

8. The method according to any of claims 6 or 7 , wherein a flexible strip is used provided with a reinforcement ( 10 ) in the longitudinal direction thereof.

9. A method for producing a shutter ( 2 ) designed to be rolled up and unrolled, comprising: providing on each face, opposite one another, serrated belts ( 3 , 4 ) comprising a succession of teeth, and adjusting the position of the teeth of at least one of a first belt ( 3 ) of the serrated belts ( 3 , 4 ) to permit both belts ( 3 , 4 ) to mesh, by deforming said belt ( 3 ) in such a way that both belts ( 3 , 4 ) can mesh,

wherein the position of the teeth of at least said first belt ( 3 ) is adjusted when at least a part ( 9 ) of said shutter ( 2 ) is being rolled up simultaneously with the belts ( 3 , 4 ), whereby said part ( 9 ) of the shutter ( 2 ) comprises a lateral edge of said shutter, and

wherein the shutter ( 2 ), or said part ( 9 ) is being rolled up while said first belt ( 3 ) which is free in relation to the shutter ( 2 ), or in relation to said part ( 9 ), and which is provided opposite one of the faces of the shutter ( 2 ) or of said part ( 9 ), is made to mesh with a second belt ( 4 ) of the serrated belts ( 3 , 4 ) which is fixed in relation to the opposite face of the shutter ( 2 ) or of said part ( 9 ), whereby this meshing takes place while the shutter ( 2 ) or said part ( 9 ) is being rolled up, at a place where the two belts ( 3 , 4 ) make contact, after which said first belt ( 3 ) is fixed in relation to the shutter ( 2 ) or in relation to said part ( 9 ), to the face opposite the one with the fixed belt ( 4 ) while the belts ( 3 , 4 ) mesh, such that the position of the belts ( 3 , 4 ) is subsequently stabilized in relation to the shutter ( 2 ) or in relation to said part ( 9 ) of the shutter ( 2 ).

10. The method according to claim 9 , wherein, in order to make the belts ( 3 , 4 ) mesh, the free belt ( 3 ) is stretched in the longitudinal direction while the shutter ( 2 ), or said part ( 9 ) is being rolled up, in such a way that it is extended as a function of the position of the teeth of the fixed belt ( 4 ), and such that both belts ( 3 , 4 ) can mesh.

11. The method according to claim 9 , wherein use is made of serrated belts ( 3 , 4 ) whereby the distance between two successive teeth is larger than the width of the teeth in the longitudinal direction of the belts ( 3 , 4 ).

12. The method according to claim 9 , further comprising applying an adhesive which sets relatively slowly on the back of the above-mentioned free belt ( 3 ) before the latter is rolled up together with the shutter ( 2 ) or said part ( 9 ) of the shutter ( 2 ), such that said belt ( 3 ) is fixed to the shutter ( 2 ) or to said part ( 9 ) in the rolled-up position of the latter.