FR2471858A1 - COMPOSITE MATERIAL CONSISTING OF A NON-TEXTILE SOFT FLAT SHAPE AND AT LEAST ONE TEXTILE FLAT SHAPE - Google Patents

Abstract

THE COMPOSITE MATERIAL OF THE PRESENT INVENTION CONSTITUTES A NON-TEXTILE, SOFT DOUGH SHAPE 1, AND AT LEAST ONE TEXTILE FLAT SHAPE 2, 3 MADE FROM SYNTHETIC FIBERS, AND IS CHARACTERIZED BY THE, OR THE, SHAPE TEXTILE PLATE (S) 2, 3 ARE, OR ARE, MANUFACTURED USING TEXTURED YARNS. APPLICATION OF THIS PREFERRED COMPOSITE MATERIAL FOR THE MANUFACTURE OF SPORTS BALLS.

Description

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  "Composite material consisting of a flexible flat shape

  non-textile and at least one flat textile shape. "

  The present invention relates to a composite material consisting of a non-textile flexible flat shape and at least a textile flat shape made from fibers.

  synthetic materials and the use of this composite material

  site especially for the manufacture of sports balls.

  Composite materials of this type have been proposed several times in the past. Thus, relatively poor quality split leather has been made resistant to fatigue by dubbing with a silky material or by a layer of fabric glued to the back (German Patent Nos. 214,902 and 247,060). It has been sought to improve the deformation resistance of leather photo bags by pieces of fabric impregnated with hardenable phenoplasts bonded to the back of the leather (German Patent Application L 11,522 VII / 28b published

  20/9/56). An attempt has been made to improve the strength and resistance

  tearing of the leather for the uppers of the shoes by doubling with flat textile shapes made of

  synthetic fiber in linen or linen

  German Patent Application No. 14,335,315), and finally German Patent Application No. 1,760,286 is proposed to apply to the flower side surface of poor quality leather pieces after polishing of the grain. to increase tear resistance, a coating constituted by a flat textile shape, by

  example a knit, a tablecloth or a synthetic fiber fabric

  ticks. Recently, research has been undertaken to improve the deformation resistance of balloons

  sport, especially handballs and footballs.

  ball, doubling the envelope made of leather, synthetic leather or PVC sheet with one to three 3-5 layers of fabric made of synthetic fibers. As a result, the balloons can acquire a better round shape from the beginning, which does not particularly deteriorate even at the beginning.

  during prolonged use, especially in wet weather.

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  In addition to the aptitude for games and theft, also the increase in weight due to moisture absorption can be influenced by using composite materials with

  flat textile shapes made of synthetic fibers

c.

  In all cases where the aim is to strengthen

  flexible non-textile meslplates by dubbing with shapes

  textiles, or to improve the resistance to

  formation of objects made from such a composite material, it depends in the first place on a solid and permanent connection between the various flat shapes. This is not satisfactorily obtained with traditional composite materials because on the one hand smooth and non-twisted smooth synthetic threads are used and on the other hand, flat textile shapes are used which, because of their usual construction, in particular with regard to their extensibility in various directions, behaves differently from that of the improved non-textile flat shape. Another disadvantage of the known composite materials is the low resistance to tearing initiated and the low resistance to stress resulting

  seam bonds on made objects.

  For sports balls, resistance to tearing amor-

  this plays a special role in the seam area

  (breaking strength of the stitches) of which the enve-

  loppe is made from leather pieces.

  The object of the present invention is the provision of a composite material of the type mentioned at the beginning, in which the particular structure of the flat textile shapes assures

  a strong and lasting connection between the various forms

  At the same time, it provides good reinforcement and resistance to deformation of objects made from this composite material as well as an increase in the breaking strength of sewing stitches for sewing objects. In addition, the present invention relates to the provision of a sports ball which, with a high resistance to deformation, has a better round shape and a lower absorbency for water, and for which the various flat shapes

  constituting the composite material give a solid connection

  of and durable, with resistance to breaking points

high stitching.

  This object is made according to the present invention in that the textile flat shape (s) is,

  or are, made using textured yarns.

  The term "flat shape" is understood to mean a form "essen-

  which is generally two-dimensional and has a very small thickness in relation to its length and its width; examples of such flat shapes are skins, ribbons or sheets of paper, sheets or ribbons of synthetic material, as well as in particular

  "flat textile forms", that is to say the flat forms

  are made from fibers such as, for example,

  flat forms knitted or woven into yarns, nonwoven fabrics of fibers, felts, non-woven fabric flat structures of endless yarn or like products.

  Textured yarns are, on the one hand,

  laments which, in the initial state, were constituted by a large number of unitary filaments arranged in parallel,

  but in which the parallel position of the

  has been suppressed by a treatment giving a texture

  (for example by braiding with blower nozzles, formally

  loops by blowing nozzles, compression creping

  false-twist creping, rippling, creping

  blade, knitting-uncoupling treatment or

  logues), and secondly the cut fiber yarns which have acquired an additional structure of the surface by

  a treatment giving a texture (for example false tor-

compression, compression ripple).

  When according to the present invention it is proposed that the flat textile form (s) is or are made using "textured" yarns, this means that spun yarns not exclusively textured. Depending on the nature of the flat non-textile shapes and / or flat textile shapes, it may be sufficient to use a form

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  a flat consisting only partly of textual yarns

  res; for example a fabric in which only the warp or weft is constituted by textured yarns, or a fabric complex in two layers, in which the fabric facing the non-textile flat shape is made of

  textured yarns, may be sufficient. More is important

  aunt the amount of textured yarns on the surfaces of the

  bond, better is this one. The amount of textile yarns

  should therefore be more than 50%

  by weight, in particular from 70 to 100% by weight. The resistance

  tearing process initiated in the seam area

  resistance to breakage of sewing stitches), also increases

  the amount of textured yarns.

  Textured yarns can be fiber yarns

  cut or filament yarns, the latter being

  ferred. Among the various texturing methods, it is preferable

  air-jet treatment which results in spun yarns

  curly stems from filament yarns. In accordance with the present invention, a preferred embodiment thereof provides that textured yarns made of

  filament yarns are blown spun yarns

  keys, inflated by air nozzles. The loops, laces and rings on the surface of the blown, looped yarns of this kind, which are securely entangled in the filament band, provide better mechanical adhesion when joining the flat shapes and provide

  especially a large effective surface when linking

it is done by gluing.

  - Since flat textile shapes related to

  non-textile flat shapes possess the ability to increase

  their strength or resistance to tearing

  and / or to improve the resistance to deformation, especially

  example to positively influence their extensibility, this is advantageous when the textured yarns have the value

  determined minimum with respect to their technological value.

textile logic.

  Thus, the breaking strength of textured yarns

  must be at least 35 cN / tex. According to the method of

  turation it is necessary to take

  on the other hand, a filament yarn with resistance to breakage

  re particularly higher; if blown, air-blown spun yarns are used, the initial resistance of the filament yarn to be patterned should be about

  % greater than the breaking strength of the textile yarn

  sought after. In this case, it is possible to use high-strength filament yarns, already known in the industrial sector, having a higher tensile strength than

  about 65 cN / tex, preferably greater than 70 cN / tex.

  If it is proposed for this to improve the resistance to deformation of non-textile flat shapes with a power

  high elongation (eg PVC plastic

  or wet leather), it is recommended to use

  flat textile shapes with low elongation power.

  This can be achieved through the construction of the flat shape (the knits have a longer stretching power than the fabrics), but also this can be influenced

  considerably by lengthening yarns. So, the

  Textured materials should preferably have an elongation at break of less than 25%, values less than

  % are preferred. Also, with regard to the

  At the preferred elongation level, the looped texturing is used as a texturing method because, during this process, the elongation level of the yarn does not change particularly. Starting from a yarn of filaments having an elongation at break of about

  18%, we obtain a textured yarn having substantially the same

lengthen me.

  If the bonding of the flat shapes is to be carried out at elevated temperatures, it is recommended to use flat textured textile filament shapes which have a low shrinkage level at these temperatures. Preferably, the textured yarns must have a hot air shrinkage (15 minutes at 1900 ° C.) of less than 10%, in particular less than 5%, and a boiling shrinkage (60 minutes,

  1000C) less than 5%, in particular less than 1%.

  As already mentioned, textured yarns

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  consisting of endless filaments are preferred over

  Textured yarns of cut fibers. In general, they

  have greater strength and variety

  in the structuring of the surface by the appropriate texturing processes; in particular filament yarns can easily be subjected to blowing-looping treatment. The textured yarns can be made from natural and / or synthetic fibers, the latter being obtainable by various spinning technologies, by

  example by wet spinning, dry, or from mass melt

  due. Because of their good technological properties tex-

  tiles and their accessibility in sufficient trade,

  textured spun yarns of synthetic polymers are preferred

  to be spun from melt, like polyamides

  mides, polyesters or polyolefins. Nylon (polya-

  mide 6-6) and polyethylene terephthalate are

most popular.

  It has already been pointed out that objects conforming to

  present invention, concerning the structure of the flat shapes

  textiles and also of the flat textile shapes used, can be obtained provided

to use textured yarns.

  Since knits generally have a high elongation due to their construction, which in addition is not

  not identically large, all directions, that nap-

  pes have the same disadvantages and that felts (cut fiber) have too little strength, fabrics or sewn

  frame) are preferably used as flat tex-

  tiles. For fabrics, it may be advantageous for their further processing into a composite material according to the present invention to use, in the chain and the

  weft, yarns having different elongation power.

  The non-textile flat shape can be improved with one or more flat textile shapes. The doubling with a flat textile shape, for example with a fabric, is known in the branch of leather. Generally, this is done using fabrics whose warp and weft form an angle of 900 with each other. For the manufacture of fabrics of this type, a chain filament system and a filament system are generally used. frame. In order to obtain, in every direction of the fabric, the most regular resistance, elongation and shrinkage properties, it is

  recommended to use a so-called triaxial tissue. For the manufacture

  of these fabrics, two chain filament systems (which are diagonally incorporated) and a filament system of

weft are needed.

  The flat non-textile flexible object can be bonded, for particularly severe conditions, also with a complex of two tissues, where the chain filament systems of the two tissues develop in formation relative to each other. an angle of preference of 450. Other combinations, for example of two tissues, which are placed at an angle of 900 relative to one another, of three tissues which are each placed at an angle of 600 relative to one another, or several flat textile shapes of different types, are possible. Also, on the face of the complex

  facing the non-textile flat shape, a coating

  additional, a flocking or the like may be performed

  to aesthetically improve the composite material.

  The use of more than three layers of textile flat shape is not advantageous in most cases because the

  complex is too expensive, too heavy and too rigid.

  There are several possibilities of linking the flat textile shape (s) (possibly in the form of

  complex) with the non-textile flat shape. Next to a picnic

  ge or sewing, knitting and sewing technologies can

  in particular be considered. Preferred are

  my plates glued together because, because of this, they constitute a large number of possibilities and a two-dimensional composite can be obtained, which has in all directions of continuously homogeneous solidities. In addition to the use of the usual glues, which can be activated

  pressure and / or temperature, the intermediate layer

  re leaves with low melting point, then the treatment

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  under pressure and / or temperature or the use of fibers with different melting points, possibly

  two-component fibers having a fuse-point component

  high temperature and a low melting point component can be considered. Collage and sewing or stitching

  can also be combined with each other.

  Non-textile flat flexible shapes include, for example, strips of paper or cardboard; plasticized PVC strips; a synthetic weave material based on coated fabric, nonwoven or sheets. Preferably, a leather-based composite material is made, o split leather of poor quality may also be

  doubled as the chrome leather of good quality.

  The composite material according to the present invention may be used as a weave material for shoes, boots or the like. It can be used in good quality tarpaulins for trucks, convertible top for convertibles or protective covering for construction sites or the like. The composite material according to the present invention is preferably used for the manufacture of sports balls, in particular good quality balloons made of leather and

  made of synthetic material, such as those used for

  ball, handball, medical balloons, pushing-ball or the like, especially for inflatable leather-ball and handball-balloons. These balloons keep

  their shape even after prolonged use. In addition, the

  Composite material according to the present invention is

  as a furniture covering material, in particular

  tie for seat upholstery, where you have to take into account

  of its resistance to deformation. Finally, the material

  posite according to the present invention is also particularly suitable

  well for the manufacture of conveyor belts

  mission, the surfaces of application (the surfaces

  belts) which may be made of leather.

  The present invention is illustrated by the attached nonlimiting descriptive drawings in which - Figure 1 is a schematic view partially

  cut from a composite material conforming to this

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  tion, and - Figure 2 is the schematic side view of a

  spun yarn, curly, preferably used.

  In FIG. 1 is shown a flat shape

  textile 1, for example a piece of leather on the back of which

  the two flat textile shapes 2 and 3 are glued,

  also two classic fabrics whose warp and weft

  develop at an angle of 900, one

  port to another. The fabric below (mark 2) and the fabric above (mark 3) are superimposed so that the chain filaments of the two fabrics are laid next

  an angle of 450. This tissue complex (markers 2 and 3) pre-

  remarkably high isotropy in terms of

  identify the strength and elongation. It is appropriate at the same time as leather for the manufacture of high-quality, deformation-resistant footballs which are characterized by a breaking strength of

high stitches.

  FIG. 2 shows a blown 4 wire, looped, inflated by air nozzles, in the core of which the loops 5 and the laces 6 emerging on the surface are securely entangled

  Such a yarn is particularly suitable for the manufacture of

  cation of textile flat shapes in textured yarns,

  for the composite material conforming to this

invention.

Claims (17)

R E V E N D I C A T IO N S   1. Composite material consisting of a flat, non-textile, flexible shape, and at least one textile flat shape made from synthetic fibers, characterized in that the flat textile form (s) (s) ( s) is, or   are, manufactured using textured yarns.   2. Composite material according to claim 1,   characterized by the fact that the amount of textured yarns   is at least 50%, preferably 70 to 100% by weight.   3. Composite material according to one of the claims   1 and 2, characterized in that the textured yarns are   blown, looped, air-blown yarns,   from filament yarn.   4. Composite material according to any one of   claims 1 to 3, characterized by the fact that the   the textured ones have a tensile strength of minus 35 cN / tex.   5. Composite material according to any one of the   Claims 1 to 4, characterized in that the textured yarns have an elongation at break of less than%.   6. Composite material according to any one of   Claims 1 to 5, characterized in that the textured yarns have a hot air shrinkage (15 minutes, 1900 ° C) of less than 10%, preferably less than 5%, and a boiling shrinkage (60 minutes, 1000 ° C) inferior   at 5 X, preferably less than 1%.   7. Composite material according to any one of   claims 1 to 6, characterized by the fact that the   the textured ones consist of endless filaments.   8. Composite material according to any one of   Claims 1 to 7, characterized in that the yarns   textured are made of synthetic polymers   spun from melt, preferably   mide 6.6 or polyethylene terephthalate.   Composite material according to any one of   Claims 1 to 8, characterized by the fact that   fabrics as flat textile shapes. 2411858   10. Composite material according to any one of   Claims 1 to 8, characterized by the fact that   knitted sewn items (weft knit Rachel) as flat textile shapes.   11. Composite material according to any one of claims 1 to 9, characterized in that the form   Flat non-textile, flexible, is bound with a triaxial fabric.   12. Composite material according to any one of   Claims 1 to 9, characterized by the fact that the form   non-textile flat, flexible, is linked with a complex   killed by two tissues, where the chains of the two tissues develop relative to one another, preferably under an angle of 45.   13. Composite material according to any one of   Claims 1 to 12, characterized in that the form   Flat non-textile, flexible, and flat textile form are glued together.   14. Composite material according to any one of   claims 1 to 13, characterized in that the form   Flat non-textile, flexible, is leather.   15.- Use of the composite material according to one   any of claims 1 to 14, for the manufacture   sports balls, in particular footballs,   ball. 16.- Use of the composite material according to one   any of claims 1 to 14 as a material for garment for furniture.   17.- Use of the composite material according to one   any of claims 1 to 14, for the manufacture transmission belts.