Fabric form consisting of multilayer fabric and composite structure made by using fabric form

Claim 2

A multilayer fabric comprising a plurality of layers of distinct fabrics each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics, and temporary wefts which can be broken by external action after weaving without substantially damaging the connecting warps; the interlaced connected warps and the temporary wefts being capable of being disengaged by subjecting the multilayer fabric to external action, whereby the layers of the distinct fabric are separated from each other at a predetermined distance.

Claim 3

A multilayer fabric according to claim 1, wherein the connecting warps are arranged at predetermined lateral intervals and the temporary wefts are arranged at predetermined longitudinal intervals so that connected portions connecting layers of distinct fabrics are arranged at predetermined longitudinal and lateral intervals, the connecting warp being interlaced with wefts in the order of the ground wefts of a ground portion in one layer of the distinct fabrics, at least one weft in the connected portion, and the ground wefts of a ground portion in another layer of the distinct fabrics.

Claim 4

A multilayer fabric according to claim 2, wherein the temporary wefts are arranged on both layers of the distinct fabrics and the each connecting warp is only interlaced with the temporary wefts of the two layers in the connected portion.

Claim 5

A multilayer fabric according to claim 2, wherein at least one temporary weft is arranged on one layer and/or another layer of the distinct fabrics and each connecting warp is interlaced with the temporary weft and at least one ground weft such that when the temporary weft is broken, the layers of the distinct fabrics can be separated by the connected portion of the connecting warp sliding through the ground weft in the connected portion.

Claim 6

A multilayer fabric according to claim 2, wherein fixing portions fixing the connecting warp to the ground weave are provided on either or both layers of the distinct fabrics.

Claim 7

A multilayer fabric according to claim 5, wherein the fixing portions are formed by increasing partially or entirely a cover factor of the ground warp as the ground weft.

Claim 8

A multilayer fabric according to claim 5, wherein the fixing portions are formed by an external fixing means being applied to a suitable portion which the connecting warp interlaces with the ground weft.

Claim 9

A multilayer fabric according to claim 7, wherein the external fixing mean is an adhesive tape.

Claim 10

A multilayer fabric according to claim 2, wherein ground wefts engaged with end portions of the connecting portion of the connecting warp or ground wefts where the connecting portion slides against are reinforced.

Claim 11

A multilayer fabric according to claim 9, wherein the ground wefts are reinforced by adding an additional ground warp.

Claim 12

ll. A multilayer fabric according to claim 9, wherein the ground wefts are reinforced by using stronger ground wefts in place of the original ground wefts.

Claim 13

A multilayer fabric comprising a plurality of layers of distinct fabrics each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics and arranged at predetermined Iateral intervals, and temporary wefts connecting the layers of the distinct fabrics and arranged at predetermined longitudinal intervals, engagement between the connecting warps and the temporary wefts being broken to separate the layers of the distinct fabrics from each other by a predetermined distance.

Claim 14

A multilayer fabric comprising a plurality of layers of distinct fabrics each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics and arranged at predetermined Iateral intervals, and temporary wefts connecting the layers of the distinct fabrics and arranged at predetermined longitudinal intervals, engagement between the connecting warps and the temporary wefts being broken to separate the layers of the distinct fabrics from each other by a predetermined distance.

Claim 15

A multilayer fabric according to claim 12, wherein connecting portions of the connecting warps extend in a direction inclined toward the layer of the fabric from one layer to another layer.

Claim 16

A multilayer fabric according to claim 12, wherein the connecting portions of the connecting warps extend in a direction substantially perpendicular to the layer of the fabric from one layer to another layer.

Claim 17

A fabric form comprising a multilayer fabric, peripheral edges of which are closed and having at least one pouring opening; the multilayer fabric being comprised of a plurality of layers of distinct fabrics, each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics, and temporary wefts which can be broken by external action after weaving without substantially damaging the connecting warps, or already broken at places interlacing with the connecting warps.

Claim 18

A fabric form comprising a multilayer fabric, peripheral edges of which are closed and having at least one pouring opening; the multilayer fabric being comprised of a plurality of layers of distinct fabrics, each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics, and temporary wefts which can be broken by external action after weaving without substantially damaging the connecting warps, or already broken at places interlacing with the connecting warps.

Claim 19

A composites structure comprising a fabric form and filling matter filled into the fabric form; said fabric form being comprised of a multilayer fabric, peripheral edges of which are closed and having at least one pouring opening; the multilayer fabric being comprised of a plurality of layers of distinct fabrics, each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics separated by a predetermined distance, and temporary wefts interlaced with the ground warps except for places interlaced with the connecting warps; the composite structure satisfying the following conditions: where Z indicates a degree of flatness of a surface of the composite structure and equals h/( P/ 2): P (mm) being a length of an interval between two adjacent joints in the longitudinal direction or in the lateral direction of the composite structure (hereinafter referred to as "pitch"). h (mm) being a height of a maximum convex portion measured from a plane including the two adjacent joints of the outermost layer of the composite structure, where a equals T/P and β equals an/a, T (mm) being a thickness of the composite structure, measured from a joint of the upper layer fabric to a joint of the lower layer fabric, an being an individual value of a, and a having a mean value of an. P W (mm) indicating the value of P in the longitudinal direction of the composite structure, P F (mm) indicating the value of P in the laterial direction of the composite structure.

Claim 20

A composites structure comprising a fabric form and filling matter filled into the fabric form; said fabric form being comprised of a multilayer fabric, peripheral edges of which are closed and having at least one pouring opening; the multilayer fabric being comprised of a plurality of layers of distinct fabrics, each consisting of ground warps, ground wefts, connecting warps connecting the layers of the distinct fabrics separated by a predetermined distance, and temporary wefts interlaced with the ground warps except for places interlaced with the connecting warps; the composite structure satisfying the following conditions: where Z indicates a degree of flatness of a surface of the composite structure and equals h/( P/ 2): P (mm) being a length of an interval between two adjacent joints in the longitudinal direction or in the lateral direction of the composite structure (hereinafter referred to as "pitch"). h (mm) being a height of a maximum convex portion measured from a plane including the two adjacent joints of the outermost layer of the composite structure, where a equals T/P and β equals an/a, T (mm) being a thickness of the composite structure, measured from a joint of the upper layer fabric to a joint of the lower layer fabric, an being an individual value of a, and a having a mean value of an. P W (mm) indicating the value of P in the longitudinal direction of the composite structure, P F (mm) indicating the value of P in the laterial direction of the composite structure.