What is claimed is:
1. A head protection air bag device having an air bag which is stored, while being folded, along the upper fringe of an opening on the cabin-inside or indoor side of a vehicle, when receiving inflation gas, said air bag developing and inflating to cover the opening,
wherein said air bag includes a gas-inflow section which inflates so as to separate a cabin-inside side wall and a cabin-outside side wall one from the other, and a non gas-inflow section which rejects inflation gas,
said gas-inflow section includes a plurality of inflatable protective shielding parts being disposed such that said inflatable protective shielding parts are longitudinally spaced from one another and cover said opening, and inflation communicating parts,
each said inflatable protective shielding part includes a plurality of inflating parts which are arranged in the longitudinal direction and vertically expand able so as to generate a tension in the longitudinal direction,
said non gas-inflow section includes a periphery part surrounding said non gas-inflow section,
a plate-like portion disposed between said inflatable protective shielding parts, and partitioning parts being vertically disposed and defining said inflation parts in said inflatable protective shielding parts, said inflation communicating parts are disposed in the lower fringe side of said air bag under said plate-like portion and along the lower fringe of said air bag,
said inflatable protective shielding parts, which are adjacently located with said plate-like portion being interposed therebetween, are communicated with each other by said inflation communicating part, and
the lower ends of said inflation parts are closed at the lower-edge side parts of the periphery parts.
2. Ahead protection air bag device according to claim 1, wherein one of the ends of said air bag is coupled to a body of the vehicle by coupling parts extending away from said gas-inflow section and said coupling parts are coupled to the lower-edge side part of the periphery parts at the completion of the developing and inflating operation.
3. Ahead protection air bag device according to claim 1, wherein said inflatable protective shielding parts, which are adjacently located with said plate-like portion being interposed therebetween, include inflow ports allowing said inflation gas to flow thereinto which are located above said plate-like portion.
4. A head protection air bag device having an air bag which is stored, while being folded, along the upper fringe of an opening on the cabin-inside or indoor side and on the side of seat recliners, and when receiving inflation gas, said air bag develops and inflates to cover the opening,
wherein said air bag includes a gas-inflow section through which said inflation gas is introduced into said air bag, and a periphery part surrounding said gas-inflow section,
said gas-inflow section is partitioned, by partitioningcoupling parts coupling the cabin-inside side wall with the cabin-outside side wall, into a plurality of inflation parts, which are arranged side by side in the longitudinal direction, and inflate when receiving said inflation gas so as to separate said cabin-inside side wall and the cabin-outside side wall one from the other, and
said inflation parts located on the side of said seat recliners serve as lower-end displacement inflation parts located such that the lower ends thereof are higher than the lower ends of said other inflation parts, thereby preventing it from interfering with the upper ends of said seat recliners.
5. A head protection air bag device according to claim 4, wherein parts of the periphery part, which are located under said lower-end displacement inflation parts of said air bag, are substantially level with parts of the periphery parts under the inflation parts, which are adjacent to said lower-end displacement inflation parts, in the lower edge height, when said air bag is developed to be flat in a non inflating state.
6. A head protection air bag device according to claim 4, wherein said gas-inflow section includes a front-seat inflow section and a rear-seat inflow section, which are respectively provided covering openings on the side of the front seat and rear seat,
said front-seat inflow section and said rear-seat inflow section include, respectively, lower-end displacement inflation parts corresponding to said front seat and said rear seat, and
a width dimension of said lower-end displacement inflation part of said front-seat inflow section as longitudinally viewed is larger than that of said lower-end displacement inflation part of said rear-inflow section as longitudinally viewed.
7. A head protection air bag device according to claim 4, wherein said air bag introduces said inflation gas thereinto both at the time of side collision and at the time of the roll-over.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Method for making a dry wiping cloth comprising using for making the cloth a spunbond non-woven product of filaments of polypropylene structured with structures of from 1 to 3 mm in diameter at a structuring level which indicates the ratio of the structured surface-area relative to the total surface-area of from 20 to 60%, the spacing between the structures, defined by the distance between the centres of the structures, being between 3 and 5 mm, the non-woven product having a traction tear strength in a first direction of between 100 and 150 N50 mm and, in a second direction, perpendicular relative to the first, between 80 and 120 N50 mm, as a dry wiping cloth.
2. Method for dry cleaning a surface, characterised in that the surface is wiped with a spunbond non-woven product of polypropylene filaments structured with structures of from 1 to 3 mm in diameter at a structuring level which indicates the ratio of the structured surface-area with respect to the total surface-area of from 20 to 60%, the spacing between the structures, defined by the distance between the centres of the structures, being between 3 and 5 mm, the non-woven product having a traction tear strength in a first direction of between 100 and 150 N50 mm and, in a second direction, perpendicular relative to the first, of between 80 and 120 N50 mm, as a dry wiping cloth.
3. Method according to claim 1 or 2, characterised in that the non-woven product has a traction tear strength in a first direction of between 110 and 130 N50 mm and, in a second direction perpendicular relative to the first, of between 90 and 110 N50 mm.
4. Method according to claim 1 or 2, characterised in that the filaments have a denier of between 1.8 and 2.2.
5. Method according to claim 1 or 2, characterised in that the structures are apertures.
6. Method according to claim 1 or 2, characterised in that the non-woven product has an elongation of between 80 and 140%10 N.
7. Method according to claim 1 or 2, characterised in that the non-woven product has a surface potential decline of between 100 and 150 V in 600 seconds.
8. Method according to claim 1 or 2, wherein a surface of metal, plastics material, ceramic material, glass or fabric is wiped.
9. Method for producing a non-woven product, wherein
a spunbond sheet with a face is prepared from filaments of polypropylene,
the sheet is consolidated by means of hydrobonding by applying jets of water to its face at a jet pressure of from 80 to 120 bar, to form a consolidated sheet,
characterised in that the consolidated sheet is structured by applying jets of water to the other face of the sheet at a pressure of from 180 to 220 bar, from an injector having three rows of jets having a diameter of from 100 to 140 \u03bcm, the spaces between the outlet orifices of the jets of the same row being between 0.5 mm and 1.5 mm, the distance between the straight line extending through the centres of the outlet orifices of a row and the straight line extending through those of an adjacent row being between 0.25 and 1.2 mm and the distance between the perpendicular line relative to the straight line of a row extending through one of the orifices thereof and the perpendicular line relative to the straight line of an adjacent row extending through the closest orifice of the one orifice is between 0.25 and 0.75 mm.
10. Production installation for a non-woven product, comprising:
a spunbond tower which conveys a sheet to a device for consolidation by means of jets of water which are projected onto one of the faces of the sheet in order to obtain a consolidated sheet which is conveyed to a structuring device, in particular to a perforating device, by means of jets of water, characterised in that the structuring device is arranged so as to project jets onto the other face of the consolidated sheet and comprises three rows of jets having a diameter of from 100 to 140 \u03bcm, the spaces between the outlet orifices of the jets in the same row being between 0.5 and 1.5 mm, the distance between the straight line extending through the centres of the outlet orifices of a row and the straight line extending through those of an adjacent row being between 0.25 and 1.2 mm and the distance between the perpendicular line relative to the straight line of a row which extends through one of the orifices thereof and the perpendicular line relative to the straight line of an adjacent row extending through the closest orifice of the one orifice being between 0.25 and 0.75 mm.
11. Non-woven product of filaments of polypropylene structured by means of structures, of from 1 to 3 mm in diameter at a structuring level which indicates the ratio of the structured surface-area relative to the total surface-area of from 20 to 60%, the spacing between the structures defined by the distances between the centres of the structures being between 3 and 5 mm, the non-woven product having a traction tear strength in a first direction of between 100 and 150 N50 mm and in a second direction perpendicular relative to the first of between 80 and 120 N50 mm and a grammage of between 30 and 60 g per m2, the potential decline being between 100 and 150 V.
12. Non-woven product according to claim 11, characterised in that the apertures do not have any filaments extending through them.
13. Non-woven product according to claim 11, characterised in that the spaces between the apertures have at the surface no loops formed by filaments.
14. Production installation for a non-woven product according to claim 10, wherein the structuring device is a perforating device.
15. Non-woven product of filaments of polypropylene according to claim 11, wherein said structures are apertures.