CZ278594A3 - Bag made of textile material, a fabric band for such bags and process for producing the fabric band - Google Patents

Abstract

A bag made of textile material, the two superimposed hollow textile layers of which are joined together at the sides and bottom of the bag by dobby fabric (6; 8) and at the top by strips (2) of dobby fabric, where the lateral dobby fabric (6) joining the front (10) and rear (11) of the bag extends from the dobby fabric (8) at the bottom at least as far as the top strips (2). Several such bags are arranged beside one another in a textile web, and the dobby fabric (6) joining the front (10) and rear (11) of the bag has a central selvedge (1) for separating the bags. The dobby fabric (8) closing the bag off at the bottom forms one continuous edge of the textile web and the top strips (2) form the other continuous open edge. In the process, a textile web for bags is produced on a power or automated loom with a dobby in a continuous production cycle with shaft threading in of three repeating groups.

Description

The bag comprises two superimposed layers of hollow fabric, which are joined to each other at the bottom of the bag and at the bottom thereof by a sheet fabric (6, 8) and provided at the top with each edge strip (2) consisting of a sheet. fabric, wherein the sheet-like, front-facing and front-side (10) and back-side (11) of the bag connecting the fabric (6) extends from the bottom-side sheet fabric (8) to at least the edge strips (2). Many such bags are provided side by side in the fabric band, so that the strip of sheet fabric (6) connecting the front side (10) and the back side (11) of the bag comprises an inner edge (1) for dividing the bags. The sheet fabric (8) closing the bags at the bottom forms one continuous edge of the fabric band and the edge strips (2) form the other continuous, open edge of the fabric. band.

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Z + Ί4Sack made of textile material, method of fabric belt production

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belt of fabric pre-ay-tle ί a

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a bag made of a textile material which is formed of a hollow fabric, the two superimposed sides of the bag forming the fabric layers being joined to each other and to the bottom by a sheet fabric. for a bag comprising a double fabric having a filament on one edge in the direction of the warp threads, the two layers of the double fabric joining the continuous fabric and which in the direction of the weft threads are at intervals corresponding to the bag width Finally, it relates to a method of making a fabric web for sacks on a conventional weaving loom or on an automatic weaving machine in a single manufacturing operation.

BACKGROUND OF THE INVENTION

For the storage and transport of fruit and vegetables and the like, it has hitherto been customary to produce either sacks loosely woven from base materials consisting of plastics or sacks of conventional natural materials woven densely.

Production methods for bags which are made from plastics materials, such as plastics foils, or by braiding plastics fibers in knitting machines, are now very common, however, considering that the seaming of the individual bags is carried out by thermal means , such processes are not suitable for making sacks of natural textile materials, such as 100% cotton. However, especially in order to protect the environment, it would be desirable to manufacture bags of natural, combustible and compostable textile materials.

The method of making sacks of textile material, which consists of a natural base material, is carried out in three stages to date:

1) Knitting of material for bag body on special raschel knitting machines.

2) Cutting of the bag body according to the desired dimensions from the knitted material.

3) Stitching bags and stitching the edges.

It is also known from EP-0 408 467 A1 to produce woven sacks on a conventional weaving loom with warp thread control for obtaining a leno weave. In this way, a double fabric is formed, the two layers consisting of leno fabrics lying on top of each other and separated from each other are joined together by entangling their respective weft and weft threads along one edge in the warp thread direction and over the entire width at specified spacing in the weft direction. of threads. In this case, a continuous zone is obtained by engaging the following bags, which are connected to each other in the transverse direction as well as along one weaving edge, while the other weaving edge remains open. Such a bag zone is suitable for self-filling the bags, wherein the bags are separated from each other after filling and closing along the center of the respective region of the transverse connection.

It is also an object of the present invention to provide a bag made of a textile material as well as a fabric band in the form of coiled goods for such bags. Doing so have. the sacks or the scotch zone can be manufactured simply and inexpensively, the sacks being also easy to handle and also well suited for machine filling. Summary of the Invention ... ... .... .

The sack according to the invention is characterized in that the two fabric layers forming the front side and the back side of the bag are provided at the top with each edge strip consisting of a sheet fabric, wherein the sheet fabric, side treated and connecting the front and back sides of the bag from the sheet fabric on the bottom side to at least the edge strips.

The sack, which is preferably made on a conventional weaving loom or on an automatic weaving loom with a single fabrication process, has good durability and nice appearance, especially since the bag body itself can also be easily woven in a variety of patterns. The edges and edges of the bag do not shake and have no seams to open. The woven sacks do not need to be made up and the finished sacks removed from the weaving loom can be used immediately for filling.

The sack according to the invention is further characterized in that gripping holes can be provided in its edge strips or closing straps can be provided or woven.

According to another feature of the invention, the bag is characterized in that its front and back sides consist of a loosely woven fabric and that the sheet fabric joining the two layers of fabric side and bottom as well as the sheet fabric forming the upper edge strips is more dense. This not only gives the bag a nice appearance, but also the bag body itself becomes sufficiently air permeable and the edges of the bag are stable and do not shake.

The invention also encompasses a fabric belt for sacks, characterized in that the double fabric of the fabric belt _is formed into a bag-like fabric. Yog = A - = = c5h: ejró ^ t-ilziqy ;; <RTIgt; its </RTI> its two layers, and that the inner edges connecting the two layers of the double fabric they extend from a continuous, one-sided sheet fabric to the edge strips provided on the other edge and restricting both layers of the double-fabric.

Such a web, in particular of a natural textile material, such as cotton, can also be manufactured very advantageously from a technological point of view on a conventional weaving loom or on an automatic weaving machine with a leaf sheet consisting of a large number of bags. Depending on the intended use, the fabric web can be cut into pieces immediately at the inner edges to obtain individual bags, or in the case of large industrial or industrial use, the fabric web stored as a ribbon can be fed immediately to the filling machine. bags. After the bag has been filled, the bag is closed by seaming the edge strips or the like, or by means of closing strips located in the edge strips and separated from the fabric band at the inner edge, for example by means of mechanical disc shears.

The fabric zone may, in particular depending on the possibilities of the weaving loom, according to the invention comprise two or more zones formed as mentioned above, in which case one zone is mirrored with respect to the adjacent zone. in the direction of the warp threads as well as the inner edges.

The invention also relates to a method for producing a fabric belt for sacks, characterized in that by guiding the sheets continuously in three continuously repeating groups, a first fabric is produced as a double fabric forming the material for making the sacks; in the form of a strip of sheet fabric which extends perpendicular to the edges of the double fabric and in the direction of the weft yarns and includes inner edges separating the bags, and in the third group during the warp yarn direction of a woven fabric, and at the other edge of the molding, limiting both layers and consisting of a woven fabric, at which edge the double fabric remains open.

In a method particularly advantageous in terms of economy and technology, the fabrics of the oro bag and hence the bags themselves are produced in a single production process, wherein within the overall width of the fabric there are three weaving processes, namely hollow fabric, double fabric and normal sheet fabric. The big advantage is furthermore that in this way bags can be produced faster than previously possible, also from natural, environmentally friendly basic materials. In addition, the process can be accomplished by making the sheet machine operate in any pattern without increasing production costs. Therefore, the bags thus produced are usable not only for storing and transporting, for example fruits and vegetables, but also for decorative and ornamental purposes. Finally, the production method of the present invention is more favorable in terms of material and energy consumption than the prior art production method, comprising a greater number of phases.

A further feature of the method according to the invention is that the connection of the layers of the double fabric formed at one edge of the fabric zone is formed as a continuous strip of sheet fabric, and the edge sheets restricting at the other edge of the fabric zone its two layers are formed as continuous still separate and sack buckles forming strips of sheet fabric.

-. j .1 ι,., ι 'Τγι ΤΙ-Π — .ΓίτΤΌ in relation to: r ^: Q nv-zr ^ Iz ^ .nr-irvr. »- * ^g ~'. j ^: —r — n -: - p— -W-— --------------.- V-—— | ^ · ϋΛ> ιυς4 - * w '- * · * ^{1 In particular} , the manufacturing measures are advantageous, but in particular allow edge strips or slats limiting the two fabric layers and always continuous and always separated from one another, so that the filling of the sacks takes place particularly simply and without complications by means of automatic filling machines.

The invention also relates to a method for producing a fabric belt comprising two or more bag belts and which is produced on a loom or on an automatic weaving machine equipped with a sheet-fed machine, continuously in one production step by feeding the sheets to the bed in three repeating groups according to controlling a method of producing a fabric belt comprising one row of sacks in a mirror-repeating pattern, wherein the inner edges extending in the longitudinal direction of the fabric belt are formed in a woven fabric web and / or an edge web adjoining each other. .

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained in more detail by way of example with reference to the accompanying drawings, in which: Figure 1 shows a cartridge or a pattern; Figure 2 is a top view of a portion of a fabric band according to the invention; FIG. A is an oblique view of a portion of the fabric stretched zone of the present invention; and FIG. 5 is a cross-sectional view of the fabric belt of FIG. 4 taken along line AA. .

The production of the sacks or fabric band according to the invention is carried out on traditional weaving looms or, according to a further development, also possible on modern automatic weaving machines, if such a machine is equipped with a leaf. The control of a weaving loom or an automatic weaving machine equipped with a sheet can be carried out either by means of punch cards (cartridges) or by a computer (microprocessor).

3, the bags are preferably made of natural base materials, such as cotton, jute, hemp, flax or linen, sisal, wool and similar natural fibers, preferably 100% cotton, taking into account environmental acceptability reasons so that bags which are no longer usable and intended to be thrown away can be easily burned or composted. Therefore, such bags are also called biopyls.

The production of the bag or fabric band is carried out on sheet machines with punch card control according to the cartridge of FIG. 1, wherein the weaving of the inner edges separating the bags from each other is performed by separate card control.

It is apparent from the drawing of the punch cards and the following production technology data that the training instructions are carried out in groups, with the size of the bag depending on how often each group is repeated.

There are three different groups of how-to guides:

the first group comprises the bag body material (double fabric), the second group comprises the joining of layers of double fabric comprising an inner edge separating the bags, the third group of the bag connector or the upper edge slats of the bag and the edge or joint of the hollow weaving. - - - - - - - - - - - - - -

Ten sheets are required for weaving. The spoke instructions are carried out in 140/10 cm spokes with four threads. The sheets are lifted by punching the punch cards and the fitting is determined by the size of the bag. ;

Strangely enough, while one edge of the double fabric is closed, the other edge of the fabric is open and in the middle there is a hollow fabric. Such woven bags do not need further confectioning and can be directly introduced for the purpose of their use.

To further explain the process of the invention, three examples A, B and C of the manufacturing technology guidelines are given below.

EXAMPLES / INVENTION

Example A:

Bag three-dimensional: 50 cm, 40 cm, 33 cm

Type of loom: P-155

Warp thread: 50 cm span, 434 threads, z of it 2 x 32 edge, 40 cm span, 360 threads, z of it 2 x 32 edge, 33 cm span, 308 threads, z of it

x 32 margin

- 9 a total of 120 threads spool on the leaf frame 4 + 2 according to the cartridge b and Fig. 1 number of sheets binding

width of instructions 136.4 + 1.2 + 0.8 width of raw goods 50 cm 40 cm 33 L / V setting 70/140 warp thread 50 tex x 2 escape 29.5 tex x 2 thread name NL / V 13,3 / 12,1 ' naming fabric NL / V 465/847 areal density 159 g / m @ 2 treatment 4% shrinkage 5% Distance to-

70/10 cm sieve sheet base 4.nitii, 3 canes remain empty then again 4 threads edge with 4 threads according to the cartridge shown in Fig. 1 cm discs bale length

138 cm

100 running meters, as required.

Example B:

Bag three-dimensional 50 cm 40 cm 33 cm

Type of weaving machine P-155

Warp thread: 50 cm span 804 threads, of which 2 x 32 edge 40 cm span, 656 threads, of which 2 x 32 edge, 33 cm span, 552 threads, thereof 2 x 32 edge total span number of sheets

- ,. '. .υυ ·· η ··· τ · Ί ^| ! ΐ ^ ^ί . - binding width instructions

2012 threads on leaf frame 4 + 2 according to the cartridge in Fig. 1

70/10 cm sieve sheet base 4 threads, 1 cane left empty then again 4 threads edge with 4 threads

According to the cartridge shown in Fig. 1 136,4 + 1,2 +0,8 ´ raw goods width 50 'cm 40 cm 33 cm adjustment L / V 140/140

29,5 tex. x 2

29,5 tex x 2 warp thread weft thread thread name N L / V 12,1 / 12,1 fabric name N L / V 84/84 2 area density shrinkage processing

171 g / m &lt; -1 &gt;. %%

Distance of exhaust discs 138.1, cm package length

100 running meters, as required

500 running meters outline

Example C

Bag | Bags of loom ₃ machines 2 x 60 cm Chinese - 175 Warp threads in total .1744. of which edge 2 x 32 threads custody according to the cartridge shown in FIG. 1 beam instructions leaf pen 140/10 cm, four threads on every fourth gap between beam cane, width 2 x 60 cm between two events, two canes remain empty

Width of raw goods 2 x 60 cm

setting 'L / V' 140/120 warp thread 29.5 tex x 2 weft thread 19.5 tex x 2 processing (loss) 1% Γ chamfering - thread waste 1% 3% thread naming to N L / V 6.1 / 6.1 naming fabric N L / V 420/360 areal density 150 g / m ² custody according to the cartridge shown in FIG. 1

distance of exhaust wheels 120 cm.

Giant. 2 and 4 show a section of the fabric belt for the bags, with inner edges J extending transversely to the longitudinal direction of the belt and separating the bags from each other. On one edge of the fabric band are provided continuous slats or edge strips 2.

mark 4, a place for advertising signs, but instead a manipulation opening can also be provided. The edge strips 2 have instead of 5 for stitching a filled bag in the region of their mounting on the bag body 3. The inner edge 1 is always in the middle of the stitching of the part 6 of the two layers of double fabric, the stitched part 6 being limited by the edges 2. On the edge of the fabric zone opposite the edge strips 2, every time, even on the bottom side.

Reference numeral 9 denotes a bag cavity having a front side 10 and a back side '11' (Figs. 3 'and 5).

The production of the bag or fabric belt for the bags is carried out on a loom under the conditions already described and depending on the sheet machine in any arbitrary pattern. The production process is, as described above, such that, on the basis of guide sheets in three groups, the machine weaves in the first group the bag body 3 mostly in a loose weaving manner within the weaving of the double fabric. In the second group, according to the instructions given by the punching of the punching cards, the machine consists of the front side 10 and the front side 11 of the sack, i.e. both layers of double fabric, according to the desired dimensions of the bag. Weaving creates an inner edge 1 which separates the individual bags. Based on the third sheet guiding group, two fabrics meet at the same edge of the web at the same time during fabrication to form a densely knit sheet web 8 that closes the end of the web.

In this third group, the edge strips 2 are also formed with a dense type of weaving as a restriction of each of the two layers of double fabric on the other edge of the fabric zone. In the deployment area on the body 3 of the bag, there are preferential places in the edge strips 2 where the bag can be sewn after filling. The edge strips 2 also comprise a space 4 for placing advertising signs or for adjusting the handling openings. With this uniform manufacturing process, the bags with cavity 6 are obtained.

As a result of the production process, a woven loom is produced as a tapestry consisting of a large number of sacks, wherein the web may have a width corresponding to about the depth of the bag, but also a width of double or multiple. At double or multiple widths, however, the bands corresponding approximately to the depth of the bag are arranged mirror-side-by-side, with the inner edges (not shown) being positioned in the middle of adjacent strips of sheet fabric and / or edge strips or edge strips 2. The web of double or multiple width, and preferably immediately after exit from the loom, cuts along the longitudinally extending inner edges.

EXAMPLE C Embodiments of the technology according to the invention relate to the fabrication of a fabric band having a double width and having both subbands having a width approximately equal to the depth of the bag are bonded to each other in the region of the bag end strip 8 forming the closed end of the bag. the longitudinal edges formed by the bag slats or edge slats (2) are open. The fabric band coming from the loom is immediately cut by means of rotary knives along the inner edge running in the middle of the strips 8 of sheet fabric, connected in the middle to each other. .

The fabric waist, whose width corresponds substantially to the depth of the bag, is immediately cut into pieces along the inner edges 11 extending across the zone, so as to immediately dispose of the individual sacks or to be rolled into rolls, optionally. of which shape storage may be carried out. Especially when such bars are used in large-scale or large-scale industrial production, the possibility of filling bags with automatic filling machines arises. In this case, after each bag has been filled, the bag is closed by sewing its slats or edge strips 2 at a predetermined location 5 and separated from the hollow zone at the inner edge 1 by means of mechanical rotary knives.

Represented by:

Dr. ZDENKA KOREJZOQÁ

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cvun. : ve ι: κ 6i ₍ Cisco

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PATENT CLAIMS

Claims (10)

0 8 n $ 9 ^! io A textile bag made of a hollow fabric, the two superimposed front side (10) and the back side (11) of the bag forming layer being joined together by a sheet fabric (6) at the sides and at the bottom. 8), characterized in that the two layers of fabric forming the front side (10) and the back side (11) of the bag are provided at the top with each edge strips (2) consisting of a sheet fabric, the sheet fabric (6) connecting the front side (10) and the back side (11) of the bag extends from the sheet fabric (8) lying on the bottom side to at least the edge strips (2). Sack according to claim 1, characterized in that openings for manual handling are provided in the edge strips (2). Sack according to claim 1, characterized in that closing strips are provided or woven in the edge strips (2). A sack according to any one of claims 1 to 3, characterized in that its front side (10) and back side (11) consist of a spun-woven fabric and a sheet fabric (6, 8) joining the two the layers of fabric on the side and at the bottom as well as the sheet fabric forming the upper edge strips (2) is a densely woven fabric. A bag zone according to any one of claims 1 to 4, comprising a double fabric having a continuous sheet fabric (8) at one edge in the direction of the warp threads and provided at weft threads at intervals corresponding to the width of the bag. a sheet fabric strip (6) joining the two layers of double fabric comprising inner edges (1), characterized in that the double fabric web has at the other edge of the edge strips (2) limiting both layers, an-1 1χ ·· ί ·· Ή>ην> ~ ι ~ · 7 1>'ν * ι / 5 ·? Ν \' ϊι · ^Λ / Τ—— “” »» »* 4. V., iγγ i · _ V 'Γ *, j3 *. -1 Λί ^ ηΐ ^ .ί. JU_l 11— - · 'x -' / ^- j — op C ' ^- 0'ïQ' X '' drtir ^ 'C' ^, Q \ 7-Vi 'j_L U 1 \ dl JX' ny, ranging from continuous, at one edge treated sheet fabrics (8) up to at least the edge strips (2) provided at the other edge and limiting the two layers of the double fabric. 6. A fabric belt comprising two or more fabric belts according to claim 5, one of which is mirror-like to the other adjacent one. 7. The web as claimed in claim 6, characterized in that the inner edges extending in its longitudinal direction are located in the middle of adjacent edge strips (2) and / or woven strips (8) of sheet fabric. A method for producing a fabric belt for sacks according to claim 5, on a conventional loom, or on an automatic weaving machine equipped with a sheet-fed machine, in a single manufacturing operation, characterized in that by feeding the sheets continuously in three continuously repeating groups. in the first group forming a double fabric forming the body of the bag, in a second group joining the two layers of double fabric in the form of a strip of sheet fabric that extends perpendicularly to the edges of the double fabric and in the weft thread direction and comprising an inner edge separating the bags from each other; the third group is also raised in the direction of the warp threads. and on the other edge of the edge-limiting layer of the sheet-like strip, the double fabric remains open at this edge. 9. The method of claim 8, wherein the mating of the layers of the double fabric formed at one edge of the fabric zone is formed as a continuous strip of sheet fabric, and the edge sheets limiting the two layers of the fabric zone at the other edge are formed as continuous, permanently separated strips of sheet fabric forming the sacks of the bag. A method for producing a fabric belt according to claim 6, on a loom or on a loom. Equipped with a flap, in one production step, characterized in that the production of the band is carried out continuously in triplicate, in groups, repeatedly guided by the method according to claim 8, in the form of a mirror-repeating one another, in the longitudinal direction The inner edges of the fabric zone form in interconnected,