EP3826499B1 - Textile layer construct - Google Patents

Description

TECHNICAL FIELD

The present invention relates to a textile layer construct according to claim 1.

STATE OF THE ART

WO 2012/115413 A2 shows a waterproof down jacket with the features of the preamble of claim 1, in which the seams with which chambers formed from layers of polyurethane material and filled with down are formed by the polyurethane material layers welded together by heat.

EP 1 785 260 A2 describes the connection of two or more layers for a medical bag, in which at least one outer layer is transparent and non-absorbent for certain laser light and a middle layer heats up when exposed to such laser light and bonds to an adjacent layer. In particular, an absorbent layer can only be partially provided between the outer layers.

EP 2 810 772 A1 describes the connection of an outer textile web with a thin underlying breathable layer, which is laser welded in particular pointwise to the textile web, with coloring of the outer textile web leading to this pointwise increase in temperature.

US 2013/0177731 A1 discloses a thermally insulating material for producing waterproof clothing articles with a layer of pockets filled with insulating material, which are covered on the outside by a water-repellent material. To the To enhance the insulation effect, a pattern of intersecting seam lines is specified with which the pockets filled with insulation material between two plastic films are separated.

The EP 3 155 933 A1 discloses a textile layer construct with the features of the preamble of claim 1. It shows an air core with air chambers which are formed from an airtight, water vapor permeable shell, the shell of each air chamber being welded in a circumferential joining zone. The cover consists of an outer textile layer and an inner membrane, both made of thermoplastic polyesters, which are welded together using laser light and under pressure, with at least the outer textile layer being transparent and a middle layer that absorbs laser light being located between the textile layer and the membrane.

WO 03/013313 shows an air mattress whose chambers can also be filled with down. Chambers lying next to each other are separated by a web layer connecting the outer and inner shells, which is welded to the outside and inside of the outer and inner shells.

US 2005/0159056 A describes one too WO 03/013313 Similar textile structure for jackets, sleeping bags, etc., revealing various visible and invisible seam techniques for the web layer.

EP 3 098 060 A describes the connection of two substrates to form a laminate.

The DE 101 58 016 C1 refers to a method for producing a fluid-tight connection of material layers, in particular textile fabrics, in which an adhesive layer made of an additional sealing strip, which seals the material layers or at least one of the material layers, is melted using a laser beam. The sealing tape and the material layer are then connected to the material layers and the other material layer, respectively.

PRESENTATION OF THE INVENTION

Based on this prior art, the invention is based on the object to specify a textile layer construct with which higher thermal insulation can be achieved over the lifespan of the product compared to the state of the art. Furthermore, it is a goal to produce items of clothing, such as a jacket or coat, in particular insulating clothing, from appropriately manufactured layer constructs with higher thermal insulation and good water vapor permeability compared to the prior art.

This object is achieved according to the invention for a textile layer construct with the features of claim 1. The absorbent component is either an absorber that is arranged between the textile outer layer and the textile inner layer and/or it is integrated into at least one of the textile outer layer and the textile inner layer.

At least two linear connections then have an interruption that is located between the ends assigned to them. In other words, it is possible for laser welding to finish a weld and start it again at a distance of 0.1 to a few centimeters.

By providing welded connections, the textile construct has welded seams which, in contrast to traditional quilted seams, do not have needle puncture holes, thereby reducing the escape of insulation material such as down loss and the penetration of moisture into the interior of the textile layer construct, which increases the longevity of a textile layer construct made from such textile layer constructs Insulation jacket improved. At the same time, the welding process enables a completely free flow of the chambers that can be filled with insulation material, so that the distribution of insulation material in the chambers, which also defines the heat retention, can be predetermined.

The laser welded connection can have a width of 0.1 to 10 millimeters. When using welding on chamber seams for insulation jackets, 0.3 to 3 millimeters are advantageous. It can be done by applying the laser radiation to the layer construct from the inner layer or the outer layer. The corresponding layer is only designed to be thin, as is intended for the clothing item, since this layer is fused with the absorber, but the absorber provides the material necessary for this. But this doesn't just have to be the material of the absorber itself, but also the materials adjacent to the absorber provide the material necessary for the weld seam. It is particularly transparent because the corresponding energy of the laser beam penetrates this layer and heats the absorber area and fuses the inner layer and the outer layer together. In particular, the absorber layer is heated and the material of the absorber layer is used for welding in the joining zone.

Pressure is applied between the top layer and the base in order to press the corresponding layers together and hold them together. The laser head that emits the laser light can consist of an air-supported glass ball, which combines two functions at the same time: focusing the laser beam on the one hand and exerting mechanical pressure on the other.

The absorber is advantageously from the group consisting of a continuous loose intermediate layer, a discontinuous loose intermediate layer, a continuous intermediate layer connected to the inner layer or the outer layer, a discontinuous intermediate layer connected to the inner layer or the outer layer or one on the inside of the inner layer or the inside coating applied to the outer layer. Furthermore, absorbent properties can be integrated directly into the inner layer or outer layer.

For a waterproof textile product, the outer layer may consist of two bonded layers comprising an outer component and an inner component, the inner component being a weatherproof membrane or a weatherproof coating on the inside of the outer component. “Inside” here means facing the body. In the present case, the component is also arranged facing the center of the chamber and is therefore to be understood as facing the interior of the chamber.

At least one of the linear connections can have an end provided at a distance from the edge of the textile layer construct. This means that the welding lines end in front of the edge of a cut part from the layer construct by placing the laser accordingly. The at least one end of the line-shaped connections can take many forms, for example from the group consisting of from a straight weld seam termination, a round weld seam termination, a hook-shaped weld seam termination, a turning weld seam termination. A round weld seam end also means the option of designing a full circle or ellipse as the end.

For a clothing detail that is not part of the present invention, such as a buttonhole or a zipper, a wide welding strip can be provided in the layer construct, which is cut open essentially in the middle, with a corresponding edge remaining at the two longitudinal ends of the welding strip, for example corresponds to half the width of the welding strip.

A cut part, in particular for a waterproof item of clothing, consists of a textile layer construct, with all linear connections ending at least at a distance from the edge of the cut part that defines a seam line, so that the outer layer and the inner layer and, if necessary, an absorber forming a loose intermediate layer have a circumferential free Form the edge end of the cut part.

1. 1) Die Kammer-Schweissnaht hört vor dem Rand des Schnittteils auf, damit dieser Rand mit einem Nahtband zwischen den Materiallagen versiegelt werden kann
2. 2) Der Rand des Schnittteils besteht aus einem breiten Schweissstreifen. Dann kann durch den flächigen Mehrlagenverbund - ähnlich wie bei der später erläuterten Reissverschlusslösung - hindurch genäht werden. Die Nähnaht wird anschliessend auf der Innenseite der Innenlage mit Nahtband versiegelt. Bei dieser Variante muss das Befüllen des Schnittteils allerdings von einer anderen Seite des Schnittteils her erfolgen. Es können wegen der Daunenbefüllung nicht alle Seiten des Schnittteils mit einem breiten Schweissstreifen ausgestattet sein.

If the construction seam is not waterproof, the chamber weld can extend to the edge of the cut part. There are two options for waterproof construction seams:

1. 1) The chamber weld stops before the edge of the cut part so that this edge can be sealed with a seam tape between the material layers
2. 2) The edge of the cut part consists of a wide weld strip. You can then sew through the flat multi-layer composite - similar to the zipper solution explained later. The sewing seam is then sealed on the inside of the inner layer with seam tape. In this variant, however, the cutting part must be filled from another side of the cutting part. Due to the down filling, not all sides of the pattern piece can be equipped with a wide sweat strip.

A method for producing a clothing item from at least two pattern parts, in particular for a waterproof item of clothing, includes the steps of creating a construction seam between the adjoining edges of the waterproof outer layer of two pattern parts by sewing them and sealing them watertight Construction seam with the help of an internally applied seam tape, sewing the inner layer and, if necessary, the loose intermediate layer of the two pattern parts, and binding the sewn inner layer with a binding tape.

To introduce a clothing detail that is not part of the present invention, such as a buttonhole or a zipper, into a textile layer construct, a method can be used that includes the steps of cutting the wide weld strip essentially in the middle lengthwise to a length that is at least an edge corresponding to half the width of the wide sweat strip remains, sewing the edges of a buttonhole or sewing the sides of a zipper in the edges of the cut wide sweat strip, and applying a seam tape to said edges of the cut wide sweat strip on the side of the inner layer up to the area of the inner layer.

Further embodiments are specified in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

zeigt eine schematische Querschnittsdarstellung einer nicht-wasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 2

zeigt eine schematische Querschnittsdarstellung einer weiteren nichtwasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 3

zeigt eine schematische Querschnittsdarstellung einer weiteren nichtwasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 4

zeigt eine schematische Querschnittsdarstellung einer weiteren nichtwasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 5

zeigt eine schematische Querschnittsdarstellung einer weiteren nichtwasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 6

zeigt eine schematische Querschnittsdarstellung einer weiteren nichtwasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 7

zeigt eine schematische Querschnittsdarstellung einer wasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 8

zeigt eine schematische Querschnittsdarstellung einer weiteren wasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 9

zeigt eine schematische Querschnittsdarstellung einer weiteren wasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 10

zeigt eine schematische Querschnittsdarstellung einer weiteren wasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 11

zeigt eine schematische Querschnittsdarstellung einer weiteren wasserdichten Lagenkonstruktion nach einem Ausführungsbeispiel der Erfindung;

Fig. 12

zeigt eine schematische Darstellung auf ein Schnittteil und Verläufe von Schweissnähten gemäss einem Ausführungsbeispiel der Erfindung;

Fig. 13

zeigt eine perspektivische Ansicht von Ausschnitten von zwei aneinander gesetzten Schnittteilen zu deren Verbindung nach einem Verfahren nach einem Ausführungsbeispiel der Erfindung;

Fig. 14-16

sind nicht Teil der vorliegenden Erfindung:

Fig. 14

zeigt eine schematische Draufsicht auf ein Schnittteil mit einer Vielzahl von versetzten und unterbrochenen Schweissnähten mit einem Platz für einen Reissverschluss;

Fig. 15

einen schematischen Querschnitt des Mehrlagenverbunds mit Reissverschluss und Nahtband nach Fig. 11 quer durch den Schweissstreifen; und

Fig. 16

einen schematischen Querschnitt durch einen Reissverschluss und Nahtband nach dem Einsatz in ein Schnittteil nach Fig. 11 quer durch das Schweissband.

Preferred embodiments of the invention are described below with reference to the drawings, which serve only for explanation and are not to be interpreted in a restrictive manner. Shown in the drawings:

Fig. 1

shows a schematic cross-sectional representation of a non-waterproof layer construction according to an embodiment of the invention;

Fig. 2

shows a schematic cross-sectional representation of another non-watertight layer construction according to an embodiment of the invention;

Fig. 3

shows a schematic cross-sectional representation of another non-watertight layer construction according to an embodiment of the invention;

Fig. 4

shows a schematic cross-sectional representation of another non-watertight layer construction according to an embodiment of the invention;

Fig. 5

shows a schematic cross-sectional representation of another non-watertight layer construction according to an exemplary embodiment Invention;

Fig. 6

shows a schematic cross-sectional representation of another non-watertight layer construction according to an embodiment of the invention;

Fig. 7

shows a schematic cross-sectional representation of a waterproof layer construction according to an embodiment of the invention;

Fig. 8

shows a schematic cross-sectional representation of another waterproof layer construction according to an embodiment of the invention;

Fig. 9

shows a schematic cross-sectional representation of another waterproof layer construction according to an embodiment of the invention;

Fig. 10

shows a schematic cross-sectional representation of another waterproof layer construction according to an embodiment of the invention;

Fig. 11

shows a schematic cross-sectional representation of another waterproof layer construction according to an embodiment of the invention;

Fig. 12

shows a schematic representation of a cut part and courses of weld seams according to an exemplary embodiment of the invention;

Fig. 13

shows a perspective view of sections of two cut parts placed together for their connection using a method according to an exemplary embodiment of the invention;

Fig. 14-16

are not part of the present invention:

Fig. 14

shows a schematic top view of a cut part with a plurality of offset and interrupted weld seams with a place for a zipper;

Fig. 15

a schematic cross section of the multi-layer composite with zipper and seam tape Fig. 11 across the sweat strip; and

Fig. 16

a schematic cross section through a zipper and seam tape after insertion into a pattern piece Fig. 11 across the sweatband.

DESCRIPTION OF PREFERRED EMBODIMENTS

When describing exemplary embodiments of layer constructs, two types of construction in the layer structure are in the foreground and the variants in the introduction of the absorber are shown. The layer constructs can advantageously be used in particular as components for producing insulation jackets.

The Fig. 1 shows a schematic cross-sectional representation of a non-waterproof layer construction 110. Additional non-waterproof layer constructions 120, 130, 140, 150 and 160 are in the Fig. 2 , 3 , 4 , 5 and 6 shown. The non-watertight layer constructions 110, 120, 130, 140, 150 and 160 are characterized by the fact that there is no weather protection membrane 10 or coating in the layer structure. Outer layers 1 and inner layers 2 are comparable to the structure of layer constructions of known insulation clothing. The outer layers 1 and inner layers 2 are in particular fabric panels.

Laser welding of seams instead of sewing quilted seams of layer constructs 110, 120, 130, 140, 150 and 160 of insulation clothing results in the following technical advantages: in contrast to traditional quilted seams, the welded seams 15 do not have any needle puncture holes, which prevents the escape of insulation material ( e.g. loss of down) and the penetration of moisture into the interior of the insulation jacket is reduced. At the same time, the welding process enables the isolation chambers 94, 95 or 96, as they are designated in the drawings, to move completely freely. The shape of the chamber and thereby the distribution of an insulation material 27 introduced into the insulation chambers 94, 95 or 96 onto the garment (and correspondingly the heat retention) can therefore be freely designed. In the Fig. 1 to 11 the isolation chambers 94, 95 and 96 are shown without contents, i.e. with an air filling. When producing the layer construct, this corresponds to the step before filling with appropriate insulation material 27.

When building layers, a component that absorbs laser light is necessary, according to Fig. 1 the continuous loose intermediate layer 3. This continuous loose intermediate layer 3 represents an absorber and can either be loose as shown here Fig. 1 or in a layered combination as in the Fig. 3 be introduced. Loosely, the absorber 3 can be provided as an absorber membrane or membrane with absorbent properties. In association as in connection with the Fig. 3 described, the absorber 5 can be introduced as a print, coating or laminated membrane or can be integrated into the inner layer or the outer layer. The intermediate layer 3 or 5 can be used throughout as in the Fig. 1 or Fig. 3 shown or discontinuously as with the intermediate layers 4 or 6a and 6b as in the Fig. 2 or Fig. 4 shown can be introduced. A component that absorbs laser light is required to weld the textile layer construct. In addition, all layers to be joined must be made of weld-compatible thermoplastics. Under the influence of focused laser light, thermal energy is created in the absorbing component. During the welding process, the laser light penetrates through the outer layer 1 or inner layer 2 and is stopped and absorbed in the component with absorbent properties, which leads to the melting of the thermoplastic polymer of the absorbent and adjacent layers due to the resulting thermal energy. Under the influence of mechanical pressure, the adjacent layers fuse with the absorbent component and form a joining zone 7, so that a connection is realized without holes in the layers.

The outer layer 1 can be realized as an outer fabric panel. The inner layer 2 can be realized as an inner fabric panel. Instead of inserting absorbent intermediate layers into the textile layer construct, absorbent properties can also be integrated directly into a fabric web. The outer layer 1 thus becomes an outer layer with absorbent properties 1a or the inner layer 2 becomes an inner layer with absorbent properties 2a. By coloring the textile yarn or the textile fabric with colors in the light frequency range visible to the laser, absorbent properties can be integrated directly into the textile itself.

During welding, the material layers are placed flat on the laser machine and not gathered. The volume of the chambers is only created when they are filled with insulation material.

Without a continuous loose intermediate layer, insulation chambers 95 are formed between the outer layer and inner layer for filling with insulation material 27. In the case of the continuous loose intermediate layer 3, the insulation chambers located essentially above and below the plane of the drawing are divided into an outer insulation chamber 94 and an inner insulation chamber 96. Through this separation no one can find Exchange of filling material 27 between the chambers 94 and 96 takes place.

At the Fig. 2 whereas, showing a non-waterproof sheet construct 120, tapes are provided as a discontinuous absorbent liner. The bands 4, which are shown here in cross section, run above and below the drawing plane in the simplest embodiment perpendicular to the drawing plane and meander in other versions if the weld seams 15 in the joining zone 7 are not aligned straight.

The Fig. 3 and the Fig. 4 show layer constructs 130 and 140, in which a continuous connected intermediate layer 5 or discontinuous connected intermediate layers are provided. This means that the intermediate layer 5 is fixed and cannot be easily separated from the inner layer 2 or the outer layer 1. In the Fig. 3 the intermediate layer 5 is firmly connected to the inner layer 2. In other exemplary embodiments, it can also be connected to the outer layer 1. The sheet may also be provided as an absorbent printed layer instead of an absorbent membrane. This applies in particular to the layer construct 140, where the discontinuous connected intermediate layer 6a and 6b of the layer construct 140 are alternatively provided on the inward-facing side of the outer layer 1 and on the outward-facing side of the inner layer 2. The absorber can be applied either on the underside of the outer layer 1, which is the inside of the outer layer 1, or on the top of the inner layer 2, which is the outside of the inner layer 2. Both variants, which are to be understood as alternatives, are combined here in one drawing; The drawing should not give the impression that the absorber is applied alternately at the top and bottom.

The Fig. 5 and the Fig. 6 show layer constructs 150 and 160, in which an absorbent component, i.e. an absorber, is provided in the outer layer 1a or in the inner layer 2a. The coloring of the textile yarn or the textile web with colors in the light frequency range visible to the laser can be complete or it can only be provided in certain areas.

The Figs. 7, 8 , 9, 10 and 11 each show a schematic cross-sectional representation of a waterproof layer construction 210, 220, 230, 240 or 250 according to one Embodiment of the invention. The same features are provided with the same reference numbers in different exemplary embodiments and drawings.

The waterproof construction according to the Figs. 7 to 11 is characterized by the fact that there is a weather protection membrane or coating in the layer structure. The outer layer 1 of the Figs. 1 to 4 and 6 has been replaced in the respective waterproof variants by a layer structure 8 as a waterproof outer layer. This waterproof outer layer 8 includes an outer component 9 and an inner component 10. The outer component 9 is, for example, the fabric panel as in the Fig. 1 to 4 and 6 , and the inner component 10 is an independent weather protection membrane or it is a weather protection coating on the inside of the outer component 9.

As with the non-waterproof construction Figs. 1 to 6 The welding process enables the insulation chambers 94, 95, 96 to run completely freely. The combination of waterproof weather protection and the completely free course of the stitching or weld seam is a clear technical differentiation from sewing according to the state of the art.

In the case of the waterproof construction, the same possibilities arise with the layer constructs 210, 220, 230, 240, 250 as already described for the layer constructs 110, 120, 130, 140, 150, 160 around an absorbent component as an intermediate layer 3, 4, 5, 6a, 6b, or as an inner layer 2b.

The insulation material 27, which can be filled into the insulation chambers 94, 95, 96, can in principle be used either in loose form or in the form of a coherent padding. This concerns well-known base materials such as down (usually loose form, but also available as padding) and synthetic fiber fillings (usually in the form of padding, but also available loose). The construction of quilted chambers 94, 95 and 96 is primarily common with loose insulation materials. Such loose insulation materials are blown into the insulation chambers 94, 95 and 96 after welding. In the exemplary embodiments with a continuous, loose intermediate layer 3 as an absorber, the insulation material 27 can be introduced both above and below the absorber membrane 3.

For a cohesive connection, all components to be joined must be made of thermoplastic materials that are compatible with welding technology. This requires a similar chemical nature and similar melting points of the polymers of intermediate layer 3 or 6a, 6b and outer layer 1, 1a or 8 and inner layer 2, 2a.

Fabric panels can be used as the outer layer or inner layer, which are commercially available fabrics made of polyester with a basis weight of approx. 50-100 g/m ² and a yarn weight of approx. 20-100 den. However, the weight per unit area and yarn can be chosen differently.

As a waterproof outer layer 8 can be used in the waterproof application and in the exemplary embodiments Fig. 7 to 11 This outer layer 8 can be made up of two components 9 and 10: a textile layer, referred to above as a fabric web 9, on the outside, and a weather protection membrane or coating 10 on the inside.

The weather protection membrane is characterized by the fact that it is waterproof and at the same time permeable to water vapor. In practice, the usual minimum requirements for a waterproof textile laminate are a water column (water pressure resistance) of at least 10,000 mm (= 1.0 bar) measured according to DIN EN 20811. Common minimum requirements for a water vapor permeable textile laminate are a water vapor resistance of at most 20 m ² Pa/W measured according to ISO 11092. The thickness of common weather protection membranes is in the range of 10-30 µm.

As an example, the absorber can be based on designs in the prior art such as in EP 3 155 933 A1 revealed to be referred; there in particular paragraphs [0022 - 0023] on page 4.

A diode laser can be used as the laser; in particular, the applicant used a diode laser with an energy range of up to 40 W. The process used is called laser transmission welding. Corresponding explanations can be found in the prior art, for example in EP 3 155 933 A1 can be found in paragraphs [0009] and [0025 - 0028].

In order to minimize the cold bridges between laterally adjacent insulation chambers 94, 95 and 96, it is advantageous if the laser seam 15 in the joining zone 7 is designed to be as narrow as possible. On the other hand, a wider weld seam 15 has higher tensile strength values. A welding width of 0.5 mm to 3.0 mm has proven to be effective.

In addition to laser welding, ultrasonic welding and high-frequency welding can also be used, which are not part of the present invention. The advantage of laser welding is that...

Thermal energy arises from the absorbing component 1a, 2a, 3, 6a, 6b. There is no damage to the inner layer 1 or the outer layer 2 or 8. By applying a laser to the fabric web, the energy can be applied in a very dosed manner and controlled precisely, so that very thin waterproof and vapor-permeable membranes can be welded, which would be too delicate for the other welding processes mentioned. Here we look again at the state of the art EP 3 155 933 A1 and referenced there to paragraph [0003].

In addition to the advantages resulting from laser welding for the layer construct 110, 120, 130, 140, 150, 160, 210, 220, 230, 240, 250 as such, new shapes and designs of isolation chambers 16, 94, 95, 96 possible in connection with the Fig. 12 be explained. The Fig. 12 shows a schematic top view of a cut part 300 and courses of weld seams according to an exemplary embodiment of the invention.

By welding the materials, the said insulation chambers 16, 94, 95, 96 are created within the cut part 300. The weld seams 15, here in the top view of the cut part 300, i.e. each representing the uppermost part of the respective joining zone 7, form the lateral boundaries of the Insulation chambers, here designated 16, which exist below the flat areas between the weld seams 15. The user of the invention described here has a high degree of design freedom with regard to the course of the weld seams 15, as long as there is a path to fill the insulation chambers 16. For this purpose, every area within an isolation chamber must be accessible to the filling material from an edge of the cut part 300. The distance between parallel Weld seams 15 should advantageously be at least 1.5 cm, better 2.5 cm, so that the filling material 27 can be well distributed in the insulation chambers 16.

The individual isolation chambers 16 are designed to be interrupted. The interruption 20 of the welding lines 15 improves the drapeability of the construction of the cut part 300. The welding lines can run parallel, offset and overlapping, as do the welding seams 21, which overlap to form a "V".

The end of the welding lines can either run as a straight weld seam 17 and end as a straight end 22, or can be designed using geometric shapes in such a way that the strength of the weld seam is improved and slipping of the insulation material is minimized. Possibilities include, for example, a round end 23, a hook-shaped end 24 or a turning end 25 of the weld seam 15. In addition, there are curved weld seams 18, which can also have interruptions 20.

A circumferential seam line 13 is drawn as a dashed curve at a distance from the edge of the cut part. In this context, seam line means that if the item of clothing is not waterproof, for example based on layer constructions Fig. 1 to 6 , the weld seams 15 can extend to the cutting line 12 of the cut position part 300. In the case of a waterproof construction, the weld seams 15 must not extend beyond the seam line 13 so that the individual layers of material remain separated in the area of the seam allowance to seal the construction seams, as will be explained below.

A garment such as an insulating jacket is produced by connecting cut parts 300 welded from layer constructs 110 or 210, for example. The Fig. 13 shows a perspective view of two cutouts 26 of two cut parts placed together for their connection using a method according to an exemplary embodiment of the invention. In the case of the non-waterproof construction with layered constructs 110, this can be done in a known manner, for example by sewing and binding the fabric on the inside, followed by serging of the excess material with a binding tape.

In the case of the waterproof construction with layer constructs 210, which form the cutouts 26, the present invention provides a novel process solution: First, the waterproof outer layer 8 of two cut parts 210 is sewn. The result is a central construction seam 28, shown in dashed lines, between the adjacent cutouts 26 of the cut parts 300. In the next step, the construction seam 28 is sealed watertight with the help of a seam tape 29, which is shown, so to speak, in a transparent dashed line on the central construction seam 28. The seam tape 29 is applied to the inside of the waterproof outer layer 8, in particular glued or welded with hot air. Finally, below the outer layer 8 and the construction seam 28 covered on the inside by the seam tape 29, the intermediate layer 3 and the inner layer 2 are sewn, edged and finished with the help of a binding tape 31, with the binding tape 31 forming a "U" on the inside and the intermediate layer 3 in between and the inner layer 2 includes.

This means that an insulating garment can be made waterproof without water being able to penetrate through the seams. To complete a manufacturing process for laser-welded clothing, process solutions for clothing details that are not part of the present invention, such as a zipper or a pocket closure, must also be specified. The manufacturing process of the garment requires that the layers of material used are first welded together and only in the second step is the further processing of the garment carried out. This is not a disadvantage for the non-waterproof processing, which corresponds to the traditional way of producing insulation clothing. However, the difficulty for waterproof processing is that the end result must be a watertight seal of all processing solutions and the materials to be processed must always be handled as a layer composite after welding. This layer combination makes it difficult to insert clothing details such as a pocket zipper 36 into a pattern part 11 in a waterproof manner.

A possible solution is to use the zipper 36 in the same way as connecting two pattern parts, as in Fig. 13 shown. The Zipper 36 sewn to the outer layer 8. This seam must then be sealed on the inside using seam tape. As a third step, the still loose intermediate layer 3 and inner layer 2 must be finished with another seam tape. Because this is done in the middle of a cut part and not like when assembling the cut parts 26 Fig. 13 at the edge of a cut part, the handling of the materials is much more delicate and complex, which has an influence on the manufacturing costs of the end product.

An alternative solution, which is less complex to process, consists of sealing the sewing seam on the inside of the inner layer. If several fabric panels lying one above the other are not connected flatly in the area of a sewing seam, attaching a seam tape would not prevent water from penetrating through the needle holes in the sewing seam, since the water can penetrate into the interior of the chambers between the layers. Therefore, a wide welding strip 33 can be created in the area of the zipper using the laser. In this welding strip 33, all layers of material are firmly connected to one another. In the case of a sewn seam within this welding strip, water cannot penetrate between the individual layers. Applying a seam tape just to the inside of the inner layer is enough to seal the entire layer composite. Clothing processing solutions can be significantly simplified in this way.

The Fig. 14 visualizes this alternative processing solution in the form of a schematic top view of a cut part 32 with a large number of offset and interrupted weld seams 15 and a place for a zipper 34 in a wide weld strip 33. The Fig. 15 shows a schematic cross section of the multi-layer composite with a joining zone across the wide weld strip. Fig. 16 finally shows a schematic cross section through a zipper 36 and two seam tapes 29 on the left and right after the zipper 36 has been inserted into a cut part Fig. 14 across the weld strip 35.

This is illustrated below using the example of a zipper. In the same step in which the weld seams 15 for the insulation chambers are welded into the material layers, in the area in which the zipper 34 in the cut part 32 is sewn in, a wide strip 33 is welded in. After welding, the situation arises in the Fig. 15 is shown. The waterproof outer layer 8, consisting of the outer component 9 and an inner component 10, is provided over the area 35 as a wide welding strip with a correspondingly wide joining zone 7, which is meltingly connected to the inner component 10 and the inner layer 2 via the continuous intermediate layer 3 . This wide joining zone 7 is constructed by a large number of narrow welding lines which are welded together and thereby form a wide welding strip as a whole. This corresponds to reference number 33 Fig. 14 . The zipper is then inserted in the middle of the welding strip 35 so that the normal sewing seam is within the widest welded strip 33 or 35. That's in the Fig. 16 shown. Left and right are in the Fig. 16 the insulation chambers 94, 96 are shown, through which the intermediate layer 3 passes, and which are delimited on the outside and inside by the waterproof outer layer 8 and the inner layer 2. If necessary, other elements can be sewn on at the same time, such as underlays or pocket bags. The wide weld seam 35 then extends to the zipper 36. It includes the waterproof outer layer 8 and the inner layer 2, which are pierced by the sewing seam 37. Finally, the sewing seam 37 on the inside of the inner layer 2 is sealed with a seam tape 29. Thanks to the wide welded strip 35, water penetrating into the sewing seam 37 from the outside cannot get into the interior of the chambers between the material layers. This is secured from the inside by the seam tape 29 on both sides of the zipper. REFERENCE SYMBOL LIST 1 outdoor location Intermediate layer 1a absorbent outer layer 6b discontinuous bonded liner 2 Inner layer 2a absorbent inner layer 7 joining zone 3 continuous loose intermediate layer 8th waterproof outer layer 4 discontinuous loose intermediate layer 9 external component 5 continuous connected intermediate layer 10 inner component 11 Cut part 6a discontinuous connected 12 cutting line 13 seam line 33 wide sweat strip 14 Seam allowance 34 Marking for zipper opening 15 Weld 16 Isolation chamber 35 wide welding strip for a firm bond between layers 17 straight weld seam 18 curved weld seam 36 Zipper 19 square weld seam 37 sewing seam 20 Interruption of the weld seam 94 Isolation chamber 21 overlapping weld seam 95 Isolation chamber 22 straight weld seam finish 96 Isolation chamber 23 round weld seam finish 110 non-waterproof layered construction 24 hook-shaped weld seam finish 120 non-waterproof layered construction 130 non-waterproof layered construction 25 turning weld seam finish 140 non-waterproof layered construction 26 Detail of two connected pattern pieces 150 non-waterproof layered construction 160 non-waterproof layered construction 27 insulation material 210 waterproof layered construction 28 Construction seam 220 waterproof layered construction 29 Seam tape 230 waterproof layered construction 30 Intermediate layer and inner layer bordered 240 waterproof layered construction 250 waterproof layered construction 31 Binding tape 300 Cut part 32 Detail of a pattern piece

Claims (7)

1. A textile layer construct (110, 120, 130, 140, 150, 160, 210, 220, 230, 240, 250) with a textile outer layer (1, 1a, 8) and a textile inner layer (2, 2a), wherein an absorber (3, 4, 6a, 6b) is provided which is arranged between the textile outer layer (1, 8) and the textile inner layer (2) and/or which is integrated in at least one of the textile outer layers (1, 1a, 8) and the textile inner layers (2, 2a), wherein linear connections between the outer layer (1, 1a, 8) and the inner layer (2, 2a) and the absorber (3, 4, 6a, 6b) and/or the integrated absorber are designed as a laser welding connection, wherein chambers (94, 95, 96) fillable with insulating material (27) are formed between the welded joints (7, 15, 17, 18, 19), characterized in that at least two linear connections have a break (20) located between the ends associated therewith.
2. The textile layer construct according to claim 1, characterized in that the absorber is at least one element from the group comprising a continuous loose intermediate layer (3), a discontinuous loose intermediate layer (4), a continuous intermediate layer (5) bonded to the inner layer (2) or to the outer layer (1, 8), a discontinuous intermediate layer (6a, 6b) bonded to the inner layer (2) or the outer layer (1, 8), a coating applied to the inner side of the inner layer (2) or the inner side of the outer layer (1, 8), an outer layer (1a) having integrated absorbent properties, or an inner layer (2a) having integrated absorbent properties.
3. The textile layer construct (210, 220, 230, 240, 250) according to claim 1 or claim 2, characterized in that the outer layer (8) consists of two bonded layers (9, 10) comprising an outer component (9) and an inner component (10), the inner component (10) being a weatherproof membrane or a weatherproof coating on the inside of the outer component (9).
4. The textile layer construct according to any one of the above claims, characterized in that at least one of the linear connections has an end (20, 22, 23, 24, 25) provided at a distance from the edge (12) of the textile layered construction.
5. The textile layer construct according to claim 4, characterized in that the at least one end of the line-shaped connections is selected from the group consisting of a straight weld seam end (22), a round weld seam end (23), a hook-shaped weld seam end (24), a turning weld seam end (25).
6. A cut piece (26) consisting of a textile layer construct according to any one of claims 1 to 6, characterized in that all linear connections end at least at a distance from the edge (12) of the cut piece (26) defining a seam line (13), so that the outer layer (1, 1a, 8) and the inner layer (2, 2a) as well as, if necessary, an absorber (3) forming a loose intermediate layer form a circumferential free edge end of the cut piece (26).
7. A method of producing a garment from at least two cut pieces (26) according to claim 6, comprising the steps of producing a construction seam (28) between the adjacent edges of the waterproof outer layer (8) of two cut pieces (26) by joining, in particular sewing, the watertight sealing of the construction seam (28) with the aid of an internally applied seam tape (29), the sewing of the inner layer (2, 2a) and, if necessary, of the loose intermediate layer (3) of the two cut parts (26), and the edging of the sewn inner layer (2, 2a) with an edging tape (31).

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