Upper and method for the manufacture of an upper

A semi-finished component for the manufacture of knitted uppers, comprising a plain knitting and a purl knitting, and at least one longitudinally extended channel which is formed within the knitting between the plane formed by the plain knitting and the plane formed by the purl knitting, the at least one longitudinally extended channel being engageable by an elongated engagement element which forms a lace or a reinforcement element designed to engage with a lace.

The present invention relates to an upper and to a method for the manufacture of an upper.

Shoes, especially sports shoes, in which the upper is provided by knitting, are known commercially.

It has in fact been observed that by providing the upper by knitting it is possible to manufacture shoes with rather low production costs and with the possibility to vary simply and cheaply said upper both as regards the colors and as regards the type of fabric used.

The methods used to provide knitted uppers entail the use of knitting machines intended to produce a rectilinear fabric, and in this case a subsequent step is provided for closure by joining the sides in the region of the sole, of the rear part and/or of the insole, or entail the use of circular machines which allow to obtain tubular elements which, in some cases, are subsequently closed at the tip and thermoset in order to obtain the suitable shape.

WO2015068108 describes, for example, a method for providing shoes by means of circular machines which entails the production of a traditional sock structure on which a sole is then applied.

WO2014096561 relates to a shoe which comprises a first enclosure, which extends longitudinally from a rear end to a front end, transversely between a lateral edge and a central margin and vertically from a base to an upper end.

In particular, the first enclosure comprises yarns which are mutually connected mechanically; at least part of said yarns comprising at least one thermosettable yarn which are distributed on all of the first enclosure so that the shape of the first enclosure is determined according to the thermosetting of the thermosettable yarn.

Typically, independently of the production method of the knitted uppers, it is necessary to provide the upper, at the region intended for fastening, with loops or holes for the passage of the laces.

Some known solutions entail providing said loops or holes by knitting, but in this case it is observed that said loops, when the lace applies stress to them, discharge the force onto the adjacent stitches, consequently producing their rupture or a certain deformation.

The aim of the present invention is to provide an upper and a method for the manufacture of an upper capable of improving the background art in one or more of the aspects indicated above.

Within this aim, an object of the invention is to devise an upper and a method for the manufacture of an upper that allow to provide engagement elements for laces which are strong and practical to use.

Another object of the invention is to provide an upper and a method for the manufacture of an upper which allow to make the shoes obtained more comfortable to wear but are also capable of obtaining a stiffened structure which can allow the effective use of the upper also for shoes subjected to considerable stresses.

Another object of the invention is to provide an upper and a method for the manufacture of an upper which are highly reliable, relatively easy to provide and at competitive costs.

This aim, as well as these and other objects which will become better apparent hereinafter, are achieved by an upper and by a method for the manufacture of an upper according to the independent claims, optionally provided with one or more of the characteristics of the dependent claims.

With reference to the figures, the semi-finished component according to the invention, designated generally by the reference numeral1, comprises a semi-finished component1for the production of knitted uppers10.

The semi-finished component1comprises a plain knitting21and a purl knitting22.

According to the present invention, the semi-finished component1has at least one longitudinally extended channel30which is formed within the knitting between the plane formed by the plain knitting21and the plane formed by the purl knitting22.

Conveniently, the direction along which the or each longitudinally extended channel30is extended is substantially transverse to the weaving direction of the knitting (the latter designated by the reference numeral200inFIGS.4and5).

In practice, the longitudinally extended channels30are extended parallel to the rows of knitting.

Specifically, the or each longitudinally extended channel30can be engaged by an elongated engagement element31which forms a lace40or a reinforcement element50designed to engage a lace40.

Preferably, the or each longitudinal channel30is extended, in the direction of extension of the rows, for at least one stitch.

In this regard, it has been observed that it is advantageous to provide that the longitudinally extended channel or channels30extend, in the row extension direction, for at least 3 consecutive stitches of knitting, especially if one wishes to obtain a longitudinally extended channel30that has good structural properties.

With reference to the knitting patterns shown inFIGS.4and5, it is noted that the extension in the direction of the rows of the purl stitches, even the ones at the longitudinally extended channels30, is constant, while the presence, again along the direction of extension of the rows, of multiple plane stitches for each respective purl stitch produces a three-dimensional extension of the respective longitudinally extended channel30toward the outside of the knitting, on the plain side.

However, it is also possible to provide the longitudinally extended channels30by providing individual stitches, which are mutually spaced along the direction that is transverse to the weaving direction and provide, between the plane formed by the plain knitting21and the plane formed by the purl knitting22, a respective channel portion.

Adjacent to the longitudinally extended channels30, both along the rows and along the columns of knitting, it is possible to provide knitting patterns of different types, for example stocking stitch knitting or flat knitting.

The semi-finished component1can be the single-layer type, as shown inFIG.6, or of the double-layer type, as shown inFIG.7.

According to a preferred practical embodiment, the semi-finished component1forms a fastening region10aof the upper10.

In one possible embodiment, the semi-finished component1has at least one first longitudinal channel30and at least one second longitudinal channel30, which are arranged on opposite sides with respect to the fastening region10a.

Conveniently, the or each longitudinal channel30is extended along a direction of extension100that is substantially perpendicular to the direction of extension of the fastening region10a.

With particular reference to the embodiment shown inFIG.2, the reinforcement element50is associated with an engagement loop51for a lace40.

The present invention also relates to a method for the manufacture of a semi-finished component1for the manufacture of knitted uppers10.

The method comprises a step of providing a semi-finished component1which has a plain knitting21and a purl knitting22.

The step of providing the semi-finished component1according to the present invention, comprises a step of providing at least one longitudinal channel30which is formed within the knitting between the plane formed by the plain knitting21and the plane formed by the purl knitting22.

Conveniently, the longitudinally extended channels30are extended parallel to the rows of knitting.

In practice, the step of providing at least one longitudinal channel30provides for a step of retention of the purl knitting stitches on the part of the respective needles and a simultaneous provision, with the needles designed to weave the plain knitting, of a preset number of rows in order to obtain a channel that has a predetermined transverse cross-section.

Subsequently, a step of returning to knit the needles assigned to retaining the purl knitting stitches is provided, in order to continue the production of the knitting.

In practice it has been found that the invention achieves the intended aim and objects, providing a semi-finished component and a method for the manufacture of a semi-finished component for uppers with integrated engagement elements for laces which are strong and practical to use.

Furthermore, the semi-finished component1obtained according to the invention allows to provide uppers for shoes which, while maintaining the typical comfort of uppers provided by knitting, have a greater structural rigidity, by virtue of the presence of the longitudinal channels30, said rigidity allowing their effective use even in sectors such as sport shoes or for so-called trail running.

The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may furthermore be replaced with other technically equivalent elements.

Thus, for example, if a rectilinear machine is used, the longitudinally extended channel or channels30can be provided between the plain and purl planes provided respectively by the first and second needle bed.

In practice, the materials used, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to the requirements and the state of the art.

The disclosures in Italian Patent Application No. 102019000007821 from which this application claims priority are incorporated herein by reference.