DE102014006212A1 - Multi-layer knit with inner curvature and outer curvature - Google Patents

Abstract

Design: A knitted fabric (5), which is knitted from a first yarn with a relatively high shrinkage property and has been shrunk after knitting, and a knitted fabric (4, 14), which is knitted from a second yarn, face each other and are with each other connected, whereby a multi-layer knitted fabric (2, 42) is formed with an inner curvature and an outer curvature. Due to a difference in the shrinkage property between the knitted fabric (5) knitted from the first yarn and the knitted fabric (4, 14) knitted from the first yarn, the knitted fabric (5) forms a concave part and that from the second yarn knitted fabric (4, 14) forms a convex part. In addition, there is a first sub-area in which the knitted fabric (4, 14) knitted from the second yarn appears as the convex part on a front side of the multilayer knitted fabric (2, 42) and the knitted fabric (5) knitted from the first yarn appears as the concave part Part on a rear side of the multi-layer knitted fabric (2, 42) appears, and a second partial area in which the knitted fabric (4, 14) appears as the convex part on the rear side of the multi-layered knitted fabric (2, 42) and that out the first yarn knitted fabric (5) appears as the concave part on the front side of the multi-layer knitted fabric (2, 42), arranged adjacent to one another. Effects: The multi-layer knitted fabric (2, 42) with a clear interior and exterior curvature is achieved.

Description

Technical area

The present invention relates to a multilayer knitted fabric.

background

Patent document 1 ( JP2004-107800 ) discloses that a connecting yarn is inserted between a front fabric and a back fabric by forming tuck stitches. The inserted connecting yarn is intended to increase the distance between the front fabric and the back fabric, thereby providing a multi-layered knit with an inner bow and an outer curvature. Patent document 2 (JPU Sho52-108377) discloses a hollow knit in which a front fabric and a back fabric are joined at their upper and lower edges as well as at their right and left edges, the hollow fabric being swaged by the use of various materials between the front fabric and the back fabric and by inserting a large amount of bulky yarn between the front fabric and the back fabric.

citations

patents

• [Patent Document 1] JP2004-107800A
• [Patent Document 2] JPU Sho52-108377

Summary of the invention

Technical problem

The multi-ply knits disclosed in Patent Documents 1 and 2 make use of the fact that the yarn interposed between the knits tends to spread apart the front knit and the back knit from the inside to the outside. Therefore, the multi-ply knits have large volumes, and the back surface of the convex part is convex (convex) and the back surface of the concave part is inwardly curved (concave). In order to obtain the sufficiently large concave and convex parts of the knitted fabric, it is necessary to insert a large amount of yarn between the front knit and the back knit.

• – die Innenwölbung und Außenwölbung zu realisieren, ohne auf die Elastizität des Garns angewiesen zu sein, das zwischen dem vorderen Gestrick und dem hinteren Gestrick eingefügt ist;
• – die Menge an Garn zu reduzieren, das zwischen das vordere Gestrick und das hintere Gestrick einzufügen ist, um das Stricken des Mehrlagengestricks in einer kurzen Zeit zu ermöglichen;
• – zu ermöglichen, dass das Mehrlagengestrick eine deutlichere Innenwölbung und Außenwölbung aufweist; und
• – die Rückfläche des konvexen Teils nach innen gewölbt und die Rückfläche des konkaven Teils nach außen gewölbt auszubilden, um das Volumen des Mehrlagengestrickes selbst zu reduzieren.

In contrast, the present inventors have researched to develop a multi-ply knitted fabric having an inner camber and outer camber without relying on the elasticity of the yarn interposed between the front knit fabric and the back fabric, and arrived at the present invention , The inventors have addressed, as an additional task, a multi-layered knit that is strong and strong, and that retains the inside and outside curvature even when the weight of a human body or the like is applied. It is an object of the invention:

• - To realize the inner curvature and outer curvature, without having to rely on the elasticity of the yarn inserted between the front fabric and the back fabric;
• To reduce the amount of yarn to be inserted between the front fabric and the back fabric to allow knitting of the multi-layer fabric in a short time;
• - to allow the multi-ply knit to have a clearer inner camber and outward camber; and
• - Curved the rear surface of the convex part inwardly and form the rear surface of the concave part arched outwards to reduce the volume of the multilayer fabric itself.

It is an additional object of the present invention to provide a multi-ply knit with concave and convex parts that are strong, strong and hard to deform.

It is a further additional object of the present invention to provide a multi-ply knit with concave and convex parts engaged with one another.

It is yet another additional object of the present invention to provide a multi-layer knit whose convex parts appear at a desired position.

Means of solving the problem

The present invention is directed to a multi-ply knit and out-puff knit fabric made of at least two types of yarn having various properties, including: a knit knitted from a first yarn having a relatively high shrinkage property and shrunk after knitting ; and a knitted fabric knitted from a second yarn having a relatively low shrinkage property, characterized in that the knitted fabric knitted from the first yarn and the knitted fabric knitted from the second yarn are opposed to each other to form the multilayer knitted fabric the knitted fabric knitted from the first yarn forms a concave portion, and the knitted fabric knitted from the second yarn forms a convex portion by the knitted fabric knitted from the first yarn and the knitted fabric knitted from the second yarn and a first portion where the knitted fabric knitted from the second yarn appears as the convex part on a front side of the multi-ply knit, and the knitted fabric knitted from the first yarn appears as the concave part on a back side of the multilayer knit and a second portion where the knitted fabric knitted from the second yarn appears as the convex part on the back side of the multi-ply knit and the knitted fabric knitted from the first yarn appears as the concave part on the front side of the multi-ply knit is disposed adjacent to each other.

The first yarn and the second yarn may both be a shrinkable yarn, but it is preferred that the first yarn is a shrinkable yarn and the second yarn is a non-shrinkable yarn to make a difference in shrinkage dimension between them large. Examples of the shrinkable yarn include an elastic yarn that has a low degree of elasticity and easily squeezes or stretches, a crimp yarn that is similar to the elastic yarn and curls when a tensile force is removed, a heat-shrinkable yarn that shrinks due to heat, and the same. In this specification, when the elastic yarn including the crimped yarn is used for knitting, the elastic yarn is stretched due to a tensile force exerted on the elastic yarn by a knitting machine, and a knit is knitted with the elastic yarn in the stretched state. When the multi-ply knit is removed from the knitting machine, the knitted fabric knitted from the elastic yarn shrinks. Moreover, when the heat-shrinkable yarn is used for knitting and subjected to heating and heat shrinkage after knitting, a knitted fabric knitted from the heat-shrinkable yarn shrinks. Here, since that from the first yarn, such. B. a shrinkable yarn, knitted fabric and the second yarn, such as. As a non-shrinkable yarn or the like, knitted fabric are joined together, concave and convex parts are formed so that the concave part is formed by the knitted fabric of the first yarn and the convex part is formed by the knitted from the second yarn knit. Therefore, it is possible to obtain a multi-ply knit with inner camber and outer camber without relying on the elasticity of yarn interposed between the front knit and the back knit. As in the 4 . 6 and 7 As shown, the multi-ply knits have a pronounced camber and outward curvature, and thus have high cushioning and puffing properties. Moreover, in the multi-ply knits, the back surface of the convex part is curved inward and the back surface of the concave part is arched outward, and the multi-ply knits themselves are thin and light. Moreover, no compound yarn that spreads apart the front fabric and the back fabric needs to be interposed therebetween, and it is possible to knit the multi-layer fabric in a short time, resulting in high knitting efficiency.

In the present invention forms the second yarn, such as. B. a non-shrinkable yarn, knitted fabric, the convex parts and the first yarn, such as. As a shrinkable yarn, knitted fabric forms the concave parts and the concave and convex parts appear on both the front and back surfaces of the multilayer fabric. A distance between the upper end of the convex part on the front surface and the lower end of a concave part adjacent to the convex part on the front side is a height difference of the concave and convex parts of the multi-layered knit. Therefore, in the multi-layered knit according to the present invention, it is possible to make a height difference between the concave and convex parts large. The convex part on the front surface of the multi-ply knit refers to a first portion, and the concave part on the front surface of the multi-ply knit refers to a second portion, and the first portion and the second portion adjoin each other. The first portion and the second portion may adjoin one another in the direction of the courses or the direction of the wales of the fabric or both in the direction of the courses and in the direction of the wales. If z. B. the first portions and the second portions adjacent both in the direction of the courses and the wales together, second portions surround a first portion and first portions surround a second portion. In contrast, in many conventional spacer knit fabrics, a knit fabric is flat on the back surface of a convex part or also has a convex part, and hence a larger convex part is necessary to obtain as much height difference as that of the present invention.

Preferably, the first yarn is a shrinkable yarn and the second yarn is a non-shrinkable yarn, and the knitted fabric knitted from the shrinkable yarn and the knitted fabric knitted from the non-shrinkable yarn are bonded together by a connecting yarn. When the knitted fabric knitted from the shrinkable yarn shrinks, the connecting yarn deforms the knitted fabric knitted from the non-shrinkable yarn according to the shrinkage, and produces the concave and convex portions.

It is more preferable that the compound yarn is made of a thermal fusion bonding yarn and is fusion-bonded to the knitted yarn knitted from the shrinkable yarn and the knitted fabric knitted from the non-shrinkable yarn. In such a multi-ply knit with inner dome and outer dome, the heat fusion bonding yarn is attached to both the stitches of the knitted yarn knitted from the shrinkable yarn and the stitches of the knitted fabric knitted from the non-shrinkable yarn. Even though the multi-layered knit with inner curvature and outer curvature is cut in an arbitrary manner, stitches do not dissolve accordingly. Therefore, no post-processing is needed after cutting.

Preferably, the first yarn is a shrinkable yarn and the second yarn is a non-shrinkable yarn, and the knitted fabric knitted from the shrinkable yarn and the knitted fabric knitted from the non-shrinkable yarn are joined together by tuck stitches formed with the shrinkable one. Yarn knitted fabric over the knitted fabric of the non-shrinkable yarn, or by tuck stitches formed with the knitted fabric knitted from the non-shrinkable yarn over the knitted fabric knitted from the shrinkable yarn. Because the knitted fabric knitted from the shrinkable yarn and the knitted fabric made of the non-shrinkable yarn are bound together by the tuck stitches, the knitted fabric knitted from the non-shrinkable yarn also deforms when the knitted fabric knitted from the shrinkable yarn shrinks, and the concave and convex portions are generated. Consequently, because the knitted fabric knitted from the shrinkable yarn and the knitted fabric knitted from the non-shrinkable yarn are bonded together without a connecting yarn, it is possible to knit the multi-layer knitted fabric in a short time. It is particularly preferable that a heat fusion bonding yarn is used for the knitted fabric knitted from the non-shrinkable yarn.

When a heat-fusion bonding yarn which is inelastic and hardly shrinks due to heat is used as the bonding yarn or the non-shrinkable yarn, the heat fusion bonding yarn is fusion-bonded by heating the interlayer knitting with inside bow and outside curl after knitting and removing the heat thereof, and the multilayer knitting becomes hard. Therefore, the concave and convex parts are maintained, even if a load such. As a body weight, is applied, and the multi-layer knit, which is formed in a desired shape, retains the shape.

For example, in the fabric, the first portion and the second portion are alternately and repeatingly arranged in at least one of the directions of the courses or wales.

An arrangement may be such that the concave and convex parts formed on the first portion and the second portion of one or more multi-ply knits are engaged with each other. In this case, by making the depth of the recess in the engagement portion larger than the height of the projection, a robust engagement is achieved. With respect to the engagement, two edges or the like of a knit fabric may be engaged with each other, or two knit fabrics may be engaged with each other. The engagement makes it possible to connect edges of a multilayer fabric or multi-layer fabrics together and allows Mehrlagengestrick with a three-dimensional shape. This engagement can be solved accordingly and knitted fabrics can be joined together without using a fastener or a button. Preferably, wave-shaped concave and convex parts are provided in parallel to the longitudinal direction of the engaging portion so as to be fitted with each other. As a result, the shafts in the longitudinal direction of the engagement portion are engaged with each other, resulting in a more robust engagement.

Preferably, the first portion (the convex portion) and the second portion (the concave portion) corresponding to a target object, e.g. B. a human body, set up, which is to be supported by the multi-layer knit. When the multi-layered knit is used as a mat, a seat or a back of a chair or the like, the first portion and the second portion, which are arranged according to the human body, provide comfort. For example, in the case of a mat, convex parts adapted for the position of the scapula or hip can efficiently stimulate a pressure point. Moreover, concave parts set up for the positions where the hands are to be placed make the posture with respect to the mat stable. For fitting to a human body or the like, for example, the concave and convex parts of the multi-layer knitted fabric and their heights are designed according to the user, and a tailor-made product is produced. Moreover, even in the case where concave and convex parts are repeated only instead of the case where concave and convex parts are made to fit a human body, a portion of the human body pressed against the mat changes when the position of the person changes, preventing bed sores.

Preferably, a height difference between the first portion and the second portion varies in the vicinity of the first portion corresponding to a target object to be supported by the knit. As a result, z. As a mat, a backrest, a seat or the like is achieved, which fits conveniently to the human body. The height of the first portion and the depth of the concave portion of the second portion may vary according to the size of the first portion, the size of the second portion, the material of the yarn or the like.

Brief description of the figures

1 Fig. 12 is a diagram showing a method of knitting multi-layered knit fabric (concavity) and outer curl (convexity) and a structure of multi-layered knit fabric on a knitting machine in accordance with a first embodiment.

2 Figure 11 is a diagram showing variations of the multi-ply knit as the multi-ply knit is removed from a needle bed of the knitting machine.

3 Fig. 10 is a diagram showing a method for knitting a multi-layered knit fabric having a concavity and outward curvature, and a structure of a multi-layer knit fabric on a knitting machine in accordance with a second embodiment.

4 Fig. 11 is an illustration of a carrier to which the first embodiment is applied, in which a heat-fusion bonding yarn is used as a bonding yarn of the multi-ply inner-pleat and outer-plied knit, the figure showing the state after the bonding yarn is heat-set.

5 is a cross-sectional view showing a structure of the carrier of 4 schematically represents.

6 FIG. 12 is a diagram of a front surface of a multi-ply knitted fabric with an outer dome to which the second embodiment is applied in which a heat fusion bonding yarn is used as a non-elastic yarn, the figure showing the state after the heat fusion bonding yarn is heat-set.

7 is an illustration of a back surface of the multi-ply knit with interior camber and outward curvature of 6 , the picture is similar to 6 shows a state after heat-fusion bonding yarn is heat-set.

8th Fig. 12 is a diagram schematically showing an example of dies for use for the term fixation treatment.

9 FIG. 12 is a cross-sectional view schematically showing a mat made of a multi-layer knit with an inner dome and outer dome according to the embodiment. FIG.

Description of the embodiments

The following describes a best embodiment of the invention.

embodiments

The 1 to 9 show methods of knitting multi-ply knit with concave and outward curvature, mechanisms for producing concave and convex portions, and plots of multi-ply knit in accordance with the embodiments. Note that the multi-ply knit refers to a knit having at least plies for forming a front knit and forming a back knit with the front knit and the back knit joined together. In the case where a ply of a connecting yarn is provided for joining the front and rear knits, the multi-ply knit is a three-ply knit. The multi-ply knit is not limited to a two-ply or three-ply knit fabric and can be made of a four-ply or multi-ply knit fabric. 1 shows the method for knitting the Mehrlagegestricks according to a first embodiment and the structure of the Mehrlagengestricks on a knitting machine. The multi-layer knit is knitted using z. A flat knitting machine equipped with at least one pair of front and back needle beds, or a circular knitting machine equipped with at least a pair of inner and outer needle beds. The multi-layer knit is knitted by repeating the steps S1 for knitting a knit fabric 4 Knitted from a non-elastic yarn, step S2 for knitting a knitted fabric 5 knitted from an elastic yarn, and tucking step T for knitting a layer 6 a connecting yarn for joining the knits 4 and 5 by forming tuck stitches.

The elastic yarn means a yarn that has extensibility and z. B. a yarn whose core is made of a high tensile fiber, is surrounded by a sheath made of a nichtdehnbaren fiber. When a tensile force is applied, the core expands and the surrounding sheath expands in accordance with the elongation of the core, and thus the elastic yarn expands. Furthermore, this is non-elastic yarn a yarn which is less extensible than the elastic yarn and made of cotton, wool, a common synthetic fiber or the like. A to be applied to yarn tensile force is increased z. By applying a frictional force to the yarn on the yarn feed side or reducing the feed amount of yarn as compared with a rest yarn length at the time of knitting a knit by a knitting machine. This tensile force is used and applied to the elastic yarn when knitting a multi-ply knit. The knitting is with the z. B. about 50% to 100% of the rest length stretched elastic yarn performed, which can serve as a benchmark. Because the knitted fabric knitted from the elastic yarn is retained on the needle beds of the knitting machine, the knitted fabric knitted from the elastic yarn remains in a stretched state until it is removed from the needle beds and shrinks when it is away from the needle bed. On the other hand, the non-elastic yarn has a low extensibility and is entangled in its rest length substantially. Therefore, the knitted fabric knitted from an elastic yarn shrinks 5 to z. About 30% to 50% in length compared to the knitted fabric made of the non-elastic yarn 4 when removed from the needle bed of the knitting machine. The location 6 of the connective yarn is a sheet which knits knitted from a non-elastic yarn 4 and knitting the knitted fabric knitted from an elastic yarn with each other by forming tuck stitches or the like.

Both an elastic yarn and a crimped yarn are yarns that are stretched by a tensile force on the knitting machine and shrink when removed from the knitting machine, thus with the same effects. Therefore, a crimped yarn can be used instead of an elastic yarn. Moreover, a heat-shrinkable yarn is a yarn which is heat-shrinkable and shrinks due to heat after knitting, and it is also possible to use the heat-shrinkable yarn instead of an elastic yarn and to cause the heat-shrinkable yarn to shrink due to heat after knitting , Note that a heat fusion bonding yarn is a yarn that is fusion-bonded by heat and different from the heat-shrinkable yarn. When a shrinkable yarn and a non-shrinkable yarn are used, it is possible to make a difference in the shrinkage amount between the shrinkable yarn and the non-shrinkable yarn large, thereby making it possible to produce large concave and convex parts. However, it is also possible to use, instead of a non-shrinkable yarn, a shrinkable yarn having a relatively small shrinkage amount in combination with a shrinkable yarn having a relatively high shrinkage amount.

The knitted fabric made from a non-elastic yarn 4 and the knitted fabric knitted from an elastic yarn 5 are swapped to which front fabric for each predetermined number of stitches of a unit 8th appears, which serves as a unit, as in 2 shown. The number of stitches of the unit 8th does not have to be constant and the knitting is done so that the positions of the units 8th may be arranged alternately in the direction of the courses along the direction of the wales of the multi-ply knit or that positions of the units 8th can be fixed in the direction of the courses. In this context, the direction of the courses refers to a direction in which the multi-ply knit is knitted on the needle beds, and the direction of the wales refers to a direction perpendicular to the direction of the courses on the multi-ply knit. The location 6 of the connecting yarn connects within one unit 8th the knit knitted from the non-elastic yarn 4 and the knitted fabric knitted from the elastic yarn 5 with each other by forming tenter stitches or the like. Adjacent units 8th are not related to each other by the location 6 connected the connecting yarn.

2 shows a deformation of a unit 8th of multilayer knit 2 when the multi-layer knit 2 is removed from the needle beds of the knitting machine. The arrows in 2 illustrate the process in which the unit 8th deformed. If the multi-layer knit 2 is removed from the needle beds of the knitting machine, the knitted fabric of an elastic yarn shrinks 5 , Because the knitted fabric is made from an elastic yarn 5 and the knitted fabric knitted from a non-elastic yarn 4 interconnected by the location 6 of the connecting yarn, concave and convex parts are then produced on both the front surface and the back surface of the multi-ply knit 2 in which the concave part is knit by the knitted fabric of an elastic yarn 5 is produced and the convex part by the knitted fabric of a non-elastic yarn 4 is produced. The reason why the concave and convex parts are generated is that there is no pulling force from the knitting machine, causing the knitted fabric knitted from an elastic yarn 5 shrinks and creates the concave part. The knitted fabric made from a non-elastic yarn 4 within the same unit 8th is longer than the knitted fabric made of an elastic yarn 5 and thus generates the convex part. The front knit and the back knit are characterized by the position 6 of the connecting yarn with each other connected and the multilayer knit 2 itself does not have a big thickness. Because no yarn, which as the location 6 of the connecting yarn serving the knits 4 and 5 Spreading in opposite directions apart, needs to be inserted between them, is the knitting of the multi-ply knitted fabric 2 easier than the knitting of the patents 1 and 2.

There is often a demand for a multi-layered knit 2 which is to some extent stable and firm. If, for example, the multi-layer knit 2 is used for a carrier, a protective device, a protective glove or the like or if the Mehrlagengestrick 2 is used for a seat of a chair, a mat, a protective material of a pipe, a packaging material or the like, the Mehrlagengestrick must 2 have such stability that the concave and convex parts do not wrinkle easily. Because the multilayer knit 2 the property has even to maintain the concave and convex parts, when an external force is applied, it is possible the multi-layer knit 2 as a support, a guard, a gutter or the like to use. Because the multilayer knit 2 moreover, the property is to maintain the concave and convex parts even when a body weight is applied is the multi-layered knit 2 comfortable for use as a seat or back of a chair, as a seat material for a vehicle, a mat, a bath mat or the like. Furthermore, the multi-layer knit 2 also be used as a wallpaper, as a material for insoles or the like. So the multi-layer knit 2 stable, the location becomes 6 of the connection yarn. or the knitted fabric knitted from a non-elastic yarn 4 preferably using a heat fusion bonding yarn whose surface is fusion bonded by heat treatment. The heat fusion bonding yarn is also referred to as thermal yarn and has z. Example, a structure in which a core is surrounded with a high heat resistance of a sheath made of a thermoplastic fiber with a low heat resistance. To subject a heat fusion bonding yarn to a temperature equal to or higher than the melting point of the thermoplastic fiber is called a heat-setting treatment, and the jacket is melted by the heat-setting treatment and adhered to the circumferential yarns. Once the heat fusion bonding yarn is fixed, the multi-ply knit is difficult to deform. If the multi-layer knit 2 using a heat fusion bonding yarn as a layer 6 Moreover, with the knitting yarn knitted and subjected to the heat-setting treatment, the heat-fusion bonding yarn becomes with each stitch of knitted fabric 4 and 5 fusion bonded. Therefore separate, even if the multi-layer knit 2 is cut in arbitrary form, the stitches do not open. Accordingly, no post-treatment is needed for the cutting area. Note that it is arbitrary whether or not the stability of the multi-ply knit 2 is increased by using the heat fusion bonding yarn.

So that knitted from an elastic yarn knit 5 more clearly than the knitted fabric of a non-elastic yarn shrinks 4 , it is also possible:

• The number of stitches of one unit of the knitted fabric knitted from an elastic yarn 5 to reduce compared with that of the knitted fabric of a non-elastic yarn 4 ;
• The yarn length for a stitch of the knitted fabric knitted from an elastic yarn 5 to reduce compared with that of the knitted fabric of a non-elastic yarn 4 ; and the same. In any case, a difference in the shrinkage properties between the elastic yarn and the non-elastic yarn is certainly used. In addition, the location can 6 of the connecting yarn may be an elastic yarn or a non-elastic yarn. A nonelastic yarn may be a yarn having a normal degree of elasticity or a heat fusion bonding yarn.

3 shows a method of knitting a Mehrlagengestricks and the structure thereof according to a second embodiment, which are the same as the method and the structure of the first embodiment except the expressly mentioned below, and the knitted from an elastic yarn knitted fabric 5 is the same as that of the first embodiment. In the second embodiment, a knitted fabric made of a non-elastic yarn is knitted 14 and the knitted fabric knitted from an elastic yarn 5 connected by the formation of Fangmaschen, with the knitted fabric 14 over the fabric 5 , In step S3 of 3 becomes the knitted fabric made of an elastic yarn 14 knitted and in step S4, the knitted fabric is knit from a non-elastic yarn 5 Knitted and tiebacks are formed with the knitted from a non-elastic yarn knit 14 above the knitted fabric of an elastic yarn 5 , Note that when knitting the knitted fabric made of an elastic yarn 5 in step S3 it is also possible to form tuck stitches with the knitted fabric of an elastic yarn 5 over the knitted fabric of a non-elastic yarn 14 , Moreover, it is possible to form tuck stitches with both the elastic yarn and the non-elastic yarn. The reference number 16 in step S4 Tuck. In addition, the knitted fabric knitted from a non-elastic yarn 14 be knit from a heat fusion bonding yarn or a conventional yarn. Note that although a tying stitch with a non-elastic yarn over stitches in the same unit 8th is formed, in particular in 3 over every other stitch of the knitted fabric knitted from an elastic yarn 5 Also, a design is possible in which a tassle mesh is formed over each stitch or multiple stitch.

The multi-layered knit of 3 is also in a stretched state relative to its rest length because the elastic yarn is stretched during knitting by the tension applied by the knitting machine. When the multi-ply knit is removed from the needle beds, the knitted fabric knitted from an elastic yarn shrinks 5 for producing concave parts and the knitted fabric knitted from a non-elastic yarn 14 on the opposite side produces convex parts, because the knits 5 and 14 through the meshes 16 connected to each other. Knitting in the embodiment of 3 is easy because it is not necessary the location 6 of the connecting yarn of 1 provide. However, in the case where a heat-fusion bonding yarn needs to be knitted for the non-elastic yarn knitted fabric 14 is used, even if the multi-layer knit is subjected to a heat-setting treatment and is cut, a post-treatment, such as. As a fixation by adhesive, to meshes with the exception of the tuck stitches of knitted from an elastic yarn knitted fabric 5 be performed.

4 shows a picture taken after the knitted in the first embodiment carrier was subjected to a heat-setting treatment, and 5 shows a structure of a carrier 20 , In the examples, the layer of the connecting yarn is knitted from a heat fusion bonding yarn and the convex parts of 4 are made of a knitted fabric knitted from a non-elastic yarn, wherein the concave parts are made of a knitted fabric knitted from an elastic yarn and the back surfaces of the convex parts are concave. Units formed by the convex and concave parts are arranged, and the arrangement of the units is such that the convex parts have a larger area than that of the concave parts on the front side of the carrier. In addition, in 4 tubular knits arranged on the upper and lower parts of the multilayer fabric. As in 5 shown is the carrier 20 a total of three layers and in addition to the knitted from an elastic yarn knit 5 and the knitted fabric of a non-elastic yarn 4 a third location 21 , made of z. B. a non-elastic yarn, and the third layer 21 and the multi-layer knit form a tube.

The 6 and 7 show the multi-layer knit (after it has been subjected to the heat setting treatment) knitted according to the second embodiment, and 6 specifically shows the front surface of it and 7 shows the back surface of it. In the 6 and 7 For example, the convex portions are made of the knitted fabric knitted from a non-elastic yarn, the concave portions are made of the knitted fabric knitted from an elastic yarn, and a heat fusion bonding yarn is used for the knitted fabric knitted from a non-elastic yarn.

8th shows an example of molds used for the heat-setting treatment and the upper and lower molds 30 and 31 are according to the target form of the multilayer knit 2 shaped and z. B. heaters are in the molds 30 and 31 built-in. This can be the multi-layer knit 2 into a desired shape at the time of the heat setting treatment. Because the multilayer knit 2 is fixed by the heat-setting treatment, beyond the shape of the multilayer fabric remains 2 as it was at the time of molding.

A multi-layer knit 42 from 9 is such that concave and convex parts in right and left side panels 46 are larger than in the middle part 44 , To achieve such a design, it is sufficient to have a difference in stretchability between the knitted fabric knitted from an elastic yarn 5 and the knitted fabric of a non-elastic yarn 4 , or the like, in the side panel areas 46 bigger than in the middle section 44 , By z. For example, the extensibility of an elastic yarn, the tensile force applied to the elastic yarn during knitting, the yarn length of each stitch of the knitted fabric knitted from an elastic yarn 5 , or the like, between the middle part 44 and the side panel areas 46 be executed differently, it is possible, the Mehrlagengestrick 42 to knit. Suppose the multi-layered knit 42 is a mat for a bed, the posture in the middle of the bed is stabilized and the risk of falling out of bed due to turning or the like decreases. That's why the multi-layer knit 42 suitable for a mat to prevent bedsores and the like. In addition, if the multi-layer knit 42 As a backrest of a chair is used, the multi-layer knit fits 42 on the back.

• 1) Die Mehrlagengestricke 2 und 42, die eine Innenwölbung und Außenwölbung aufweisen, werden erzielt, ohne auf die Elastizität eines zwischen ein vorderes Gestrick und ein hinteres Gestrick eingefügtes Garn angewiesen zu sein und die Mehrlagengestricke 2 und 42 haben eine deutliche Innenwölbung und Außenwölbung;
• 2) In den Mehrlagengestricken 2 und 42 ist die Rückfläche eines konvexen Teils nach innen gewölbt und die Rückfläche eines konkaven Teils ist nach außen gewölbt und die Mehrlagengestricke 2 und 42 selbst haben ein kleines Volumen und sind leicht;
• 3) Es ist nicht notwendig, ein Verbindungsgarn einzufügen, das das vordere Gestrick und das hintere Gestrick auseinander spreizt, und das Stricken ist in kurzer Zeit fertiggestellt;
• 4) Wenn ein Wärmeschmelzverbindungsgarn verwendet wird für die Lage 6 des Verbindungsgarns oder die Lagen 4 und 14 eines nichtelastischen Garns, werden die Mehrlagengestricke 2 und 42 stabil und schwer zu verformen sein;
• 5) Wenn ein Wärmeschmelzverbindungsgarn für die Lage 6 des Verbindungsgarns verwendet wird, trennen sich Maschen sogar nicht auf, wenn die Mehrlagengestricke 2 und 42 in einer willkürlichen Form geschnitten werden. Deshalb ist keine Nachbearbeitung nach dem Schneiden notwendig;
• 6) Das Mehrlagengestrick ist geeignet für einen Träger, ein Schutzelement, eine Mütze, eine Schutzvertiefung oder eine Matte, eine Sitzfläche oder Rückenlehne eines Stuhls, ein Sitzmaterial für ein Fahrzeug, eine Matte zur Verhinderung von Wundliegen, eine Badematte, eine Matratze, ein Einlegesohlenmaterial, Tapeten oder dergleichen; und
• 7) Anstelle des elastischen Garns kann ein Kräuselgarn, ein wärmeschrumpfbares Garn oder dergleichen verwendet werden.

The embodiments have the following features:

• 1) The multi-ply knits 2 and 42 which have an inside curvature and outside curvature are achieved without relying on the elasticity of a yarn inserted between a front fabric and a back fabric and the multi-layer fabrics 2 and 42 have a clear inside curvature and outer curvature;
• 2) In the multi-layered knit 2 and 42 For example, the back surface of a convex part is domed and the back surface of a concave part is arched outward and the multilayer meshes 2 and 42 themselves have a small volume and are lightweight;
• 3) It is not necessary to insert a connecting yarn which spreads apart the front fabric and the back fabric, and the knitting is completed in a short time;
• 4) When a heat fusion bonding yarn is used for the layer 6 of the connecting yarn or the layers 4 and 14 of a non-elastic yarn, become the multilayer knits 2 and 42 stable and difficult to deform;
• 5) If a heat fusion bonding yarn for the layer 6 of the connecting yarn, stitches do not separate even when the multi-layer knits 2 and 42 be cut in an arbitrary shape. Therefore, no post-processing is necessary after cutting;
• 6) The multi-ply knit fabric is suitable for a wearer, a protective member, a cap, a protective recess or a mat, a seat or back of a chair, a seat material for a vehicle, a mattress for preventing bedsores, a bath mat, a mattress, an insole material , Wallpapers or the like; and
• 7) Instead of the elastic yarn, a crimped yarn, a heat-shrinkable yarn or the like may be used.

Examples of multi-layered knits to which the embodiments are applied may be made. Note that a connecting yarn can be used for knitting or can not be used. A shrinkable yarn may be an elastic yarn, a crimped yarn or a heat-shrinkable yarn. An example may be a mat in which positions to be touched by the hip, scapula or the like of a person are convex (a first portion) and positions where the legs and hands are to be placed are concave ( a second subarea). Moreover, a difference between the height of the convex portion of the first portion and the depth of the concave portion of the second portion in the vicinity of the first portion varies depending on the position, and a height difference is large at the position where an increase in stimulation to one human body is desired. In addition, the concave and convex parts of the mat are of 10 arranged so that they match the body shape of a user. Appropriate stimulation of the human body is achieved by the convex parts and the posture of the human body is stabilized by the concave parts. A movement of the body varies the locations thereof which are pressed against the mat, thus preserving the person lying on a bed for a long time from bedsores.

In another example, a stationary article in the form of a hexagonal column is formed by engaging a plurality of locations of a multi-ply knit together. There are provided engaging portions at which the concave portions and the concave portions are engaged with each other when viewed from outside of the stationary object, and with respect to the concave portions and the concave portions of the engaging portions, the concave portions (inner knit ) larger than the convex parts (of the outer fabric).

Examples are also stationary objects in the form of a triangular prism, in which letters are expressed by concave and convex parts of the multilayer fabric. The concave and convex parts are arranged in the form of shafts which are parallel to the longitudinal direction of the engaging portions and mate with each other, thereby reinforcing the engagement. This aspect is the same as described in the previous paragraph. Moreover, in the engaging portions, the concave portions are larger than the convex portions. Although the engagement is made by a knit, a variety of knitted fabrics may be engaged with each other. For example, curtains z. B. be engaged with each other.

Examples are backrests and seats of chairs. For example, the multi-layer knit is fixed to a wood frame by means of the concave and convex parts which are engaged with each other, and the concave and convex parts are arranged in the form of undulations which are parallel to the longitudinal direction of the engaging portion, and to each other. In the seat part portion, in which the multi-layer knit can be easily bent by 90 ° by using the concave and convex parts and inserted into the slits of the seat so that it is difficult to remove the knit from the slits because of the concave parts. Moreover, the convex parts at ends of the multi-ply knitted fabric are engaged with the concave parts of the multi-ply knitted fabric which have passed through the slits on the rear surface of the seat surface.

LIST OF REFERENCE NUMBERS

2, 42

Multi-layer fabric

4, 14

Knitted knit from a non-elastic yarn

5

Knitted knit from an elastic yarn

6

Location of connecting yarn

8th

unit

16

tuck stitch

20

carrier

21

third location

30, 31

mold

44

midsection

46

side panel

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 2004-107800 [0002]
• JP 2004-107800 A [0003]
• JP 52-108377 U [0003]

Claims (8)

Multi-layered knit ( 2 . 42 inner vault and outward curvature made of at least two types of yarn having different properties, comprising: a knit fabric ( 5 ) knitted from a first yarn having a relatively high shrinkage property and shrunk after knitting; and a knitted fabric ( 4 . 14 ) knitted from a second yarn having a relatively low shrinkage property, characterized in that the knitted fabric knitted from the first yarn ( 5 ) and the knitted fabric of the second yarn ( 4 . 14 ) are opposite each other and connected to each other, where they the multilayer knitted ( 2 . 42 ), wherein the knitted from the first yarn knitted fabric ( 5 ) forms a concave part, and the knitted from the second yarn knitted fabric ( 4 . 14 ) forms a convex part by the knitted fabric of the first yarn ( 5 ) and the knitted fabric of the second yarn ( 4 . 14 ), and having different shrinkage properties, and a first portion where the knitted fabric (2) is knitted 4 . 14 ) as the convex part on a front side of the multi-ply knitted fabric ( 2 . 42 ), and the knitted fabric knitted from the first yarn ( 5 ) as the concave part on a back side of the multi-ply knitted fabric ( 2 . 42 ), and a second portion in which the knitted fabric of the second yarn (FIG. 4 . 14 ) as the convex part on the back of the multi-ply knitted fabric ( 2 . 42 ), and the knitted fabric knitted from the first yarn ( 5 ) as the concave part on the front side of the multi-ply knitted fabric ( 2 . 42 ) appears, are arranged adjacent to each other. Multi-layered knit ( 2 . 42 ) according to claim 1, characterized in that the first yarn is a shrinkable yarn, and the second yarn is a non-shrinkable yarn, and the knitted fabric knitted from the shrinkable yarn ( 5 ) and knitted from the non-shrinkable yarn knitted fabric ( 4 . 14 ) are connected by a connecting yarn. Multi-layered knit ( 2 . 42 ) according to claim 2, characterized in that the connecting yarn is made of a heat-fusion-bonding yarn and the connecting yarn is knitted with the knitted fabric made of the shrinkable yarn ( 5 ) and the knitted fabric of the non-shrinkable yarn ( 4 . 14 ) is melt-bonded. Multi-layered knit ( 2 . 42 ) with inside curvature and outside curvature according to claim 1, characterized in that the first yarn is a shrinkable yarn and the second yarn is a non-shrinkable yarn, and the knitted fabric knitted from the shrinkable yarn ( 5 ) and knitted from the non-shrinkable yarn knitted fabric ( 4 . 14 ) by Fangmaschen ( 16 ) knitted with the knitted yarn ( 5 ) over the knitted fabric of the non-shrinkable yarn ( 4 . 14 ) are formed, or by Fangmaschen ( 16 ) which are connected to the knitted fabric of the non-shrinkable yarn ( 4 . 14 ) over the knitted fabric knitted from the shrinkable yarn ( 5 ) are formed. Multi-layered knit ( 2 . 42 ) with inner curvature and outer curvature according to one of the claims 1 to 4, characterized in that the first portion and the second portion are arranged alternately and repetitively in at least one direction of the courses or a direction of the wales. Multi-layered knit ( 2 . 42 ) according to one of claims 1 to 4, characterized in that the concave and convex parts, which are formed on the first portion and second portion of one or more Mehrlagengestricken, are engaged with each other. Multi-layered knit ( 2 . 42 ) with inner curvature and outer curvature according to one of the claims 1 to 4, characterized in that the first portion and the second portion are arranged according to a goal to be supported by the knitted fabric. Multi-layered knit ( 2 . 42 ) with an inner curvature and outer curvature according to claim 7, characterized in that a height difference between the first partial area and the second partial area in the vicinity of the first partial area varies according to a destination which is to be supported by the knitted fabric.

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