FI111348B - Process for treating textiles - Google Patents

Description

111348

Method for Textile Handling

The present invention relates to a method for treating textiles, wherein the textile is attached to a loose printing substrate for printing at least in a printing press.

The printing of textiles is currently carried out by two methods which differ in principle, namely: 10 - the textile is printed by the piece and cut.After that, in the cutting room, the pieces are made into pieces, or - the cut pieces or finished products are printed individually (screen printing).

15 Footprinting is suitable for compact designs and long series, as well as products that require little alignment at the application and cutting stages. As a rule, printing is done on the unfolded material, although in some cases printing 20 is performed on a tubular knit. If the articles are alignable striped or large-patterned, the casts have to be manually applied as single-piece casts, which slows down the material application step and the cutting. In such 25 series, the consumption of raw materials is also generally very high.

In particular, cotton-based raw materials use either reactive dyes or pigment 30 dyes as printing inks. Pigment inks are suitable for printing on small print patterns, but their abrasion resistance properties are not of the reactive color class. In addition, dark colors have a strong feel. Reactive dyes, when properly steamed and lightly washed, give good 35 characteristics of authenticity and durability. Steaming can be carried out, for example, at 102 ° C for about 8 minutes to 10 minutes or at 135 ° C for about 3 minutes. Thus, the reactive dyes require a steaming device, and in addition, the unreacted BNSDOCID: <111348B1 I; After the pressure wash, the printed fabric is dried in an unrelaxed space and finished with suitable materials.

In the single piece printing of screen printing, a single pattern is printed on the cut piece or the pre-welded article. The dyestuffs 10 used are those which do not require printing, so that, for example, pigment dyes are used on cotton products. Current weights typically use traditional screen printing techniques, for example printing machines such as carousels (circular trails) or ovals-15 and. Nowadays, there is also a weight track which has a desired angular shape. Currently used print media are either fixed (carousels and oval print tracks) or detachable from the conveyor track. For all these printers, one of the 20 features is that they are moved only on the printing press's own track, which has printheads, color heat treatment areas, various drying equipment, and refrigeration units along its path. On the other hand, the current print media is used without exception, with only one cut or molded product being printed at a time. Thus, the current removable print media is removed from the web for the purpose of securing and removing a single printable article.

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In low-wage countries, stitched or sewn products can be made different, thanks in particular to screen printing technology, to give them the designs that customers want. The kits can be 35 small and deliver quickly as long as the standard print products are ready in stock. Silk screen printing is suitable for small prints with small amounts of color in cotton products. In the printing of synthetic materials, silk screen printing has been used extensively, especially in the production of small series or in the production of impressive large patterns on pre-cut pieces. For example, sportswear uses this technique to print very large "fantasy patterns" in many colors and large sizes. Such large, color-intensive patterns cannot be printed on cotton, since pigment inks make the product harder, and when printing with reactive inks, the printers must be vaporized (generally about 102 ° C) and 10 inks, for which no suitable equipment has yet been available.

Em. for example, in International Patent Publication No. WO 01/49504 Printing Machine Device-15, a solution specifically designed for digital printing of textiles using an inkjet principle. This solution utilizes loose printing media of the type described above to which the textile is attached. Hereby, each printing medium is arranged to pass through a separate conveyor arrangement on the printing press at the time of printing.

Of course, the above solution does not provide any help in particular with the problems of printing cotton fabrics or knitwear, especially if one wishes to use the most advantageous reactive color printing for the above materials.

The purpose of the method of the present invention is to provide a decisive improvement on the above-mentioned problems and thereby substantially increase the state of the art. To accomplish this purpose, the method according to the invention is essentially characterized in that the textile, when attached to the printing medium 35, is further transferred from the printing press to its further processing, such as a primary drying machine, an evaporator, a washing machine, a secondary drying machine, a release device and / or the like.

BNSDOCID: <FI 111348B1 I> 111348 4

The main advantages of the method according to the invention are the simplicity, reliability and versatility of the device and its suitable equipment, especially in view of the current equipment and the textile product range 5. The following are more detailed advantages of the process of the invention.

First of all, the process can be used to produce products with printing designs which are not present on the market. The print pattern can be matched to stitches or seams so that the product becomes a complete unit. It is possible to make a textile product as a work of art, which contributes to the building of the brand. Thus, for example, designs, motifs and ribbons of all kinds and sizes can be placed in the ready-to-wear garments at any desired location. The method thus offers the opportunity to design an original collection, which also gives you freedom of price setting, which means 20 high sales margins. In addition, the size of the pattern can be related to the size of the product (e.g., 34-46), so that the final product is always as balanced as possible.

On the other hand, when cutting, for example, cross-sectional or longitudinal stripes and large-textured products, the cutting residue may currently be up to 40% to 50% of the material used. When cutting, for example, a large batch of monochrome material, the cutting loss can be minimized due to the method of the invention 30 by being representative of the pattern type and sizes of the knot, resulting in about 20% to 25% loss of formula layout for large products. All in all, thanks to the invention, material savings are always between 20% and 40%. The material saving 35 consists of, for example, the following factors: - the layout of the layout does not have to take into account the alignment of the stripes or patterns on the product, BNSDOCID: <FI 111348B1 I> 111348 5 - the layout does not need to no need to consider, which in turn reduces the number of warehouses required. As the number of castings decreases, the total number of layouts and ends loses is reduced, - Various sizes can be used in the casts, whereby the pattern loss is also reduced, 10 7 also the end losses of fabric bundles are reduced when applying to a single material.

In addition to material loss, the invention also reduces workloads in warehouse design, spreading and cutting work. In long series, the application and cutting time of large pieces is about 1.5 min / product. For stripping and cutting where stripping is done by hand, the corresponding working time is approximately 6 to 20 min / product. In this respect, the time saving in this respect is therefore about 4.5 min / product. However, this advantage is diminished by the greater labor requirement for placing cut pieces on print media.

Thanks to the invention, the material stock of printable, pre-processed, but not yet cut fabric can also be standardized, resulting in few print stock qualities in stock. Templates can be purchased from low-cost ground and pre-processed by subcontractors 30, or produced by themselves, which naturally requires a second dyeing and finishing line with machines.

Also, the risk of obsolete printed material is eliminated when printing is possible against only 35 orders; The value of knit stocks at the knitwear factory can currently reach 30% of the total value of fixed assets. Thus, lower capital requirements and reduced risk of obsolescence greatly increase the competitiveness of the company. On the other hand, the BNSDOCID: <FI 111348B1 I> 111348 6 also has a small stock of cut pieces between the weight and the weight so that the weight does not have to wait. The risk of non-printing material is low because the same clips can be printed on a variety of different printing patterns if the collection is properly designed. These extend the stitch lengths of the sewing machine when the final product differs from one another only by its printing pattern. In this context, there may not be actual stock between the printing and the sewing shop, since the printed pieces 10 are immediately assembled. A small buffer smooths out the natural variation in the printing process. As a result, work-in-progress is small, easily worth about one day's worth of production.

15 It is possible to remove and replace faulty copies that have not yet been printed, and to replace them with flawless ones already at the stage of printing on the print media, thus allowing significant cost savings in terms of color, washing and finishing. Thus, the method according to the invention allows 100% inspection at no additional cost.

In the current flat weight, the problem of even drying the material as a post-printing step is a problem which has been developed e.g. moving rolling mills to hold printed material between the printing press and dryer. In a unit weight, with a dryer immediately after the printing press, stopping the weight during printing is a problem as the dryer easily burns stagnant material. In the method of the invention, the printing presses are moving independently at their own steady speed, and such quality problems cannot occur. Thus, in particular, the printing press and the dryer preferably have their own 35 separate conveyors.

With the elimination of small batches, the assembly of products of different print designs, but similar in pattern, in the sewing plant increases the productivity of BNSDOCID: <FI 11134131 I> 111348 7. Products are differentiated by printing templates, whereby the same basic formulas are printed on different customer-specific models. Although the collection is extensive, the sewing industry's through products are similar to workwear. This allows you to keep your productivity high and automate. On the other hand, a unified production line enables the passage from cutting to ready stock.

In conventional metric weights, the printed fabric is completely dried so that the ink is not smudged prior to steam treatment, in which respect the process according to the invention needs to be dried only to a residual moisture which is favorable at the steam-steam stage. Therefore, there is no need to cool the fabric and the liquid contained therein, as in the conventional method, which also saves energy. Further, compression may be used in the washing unit for dewatering, the printed items being e.g. glued to the printing medium. In this case, for example, several rollers remove water by squeezing, since squeezing before the actual air drying is a more energy-efficient form of dewatering than spinning.

Advantageous embodiments of the method of the invention are set forth in the dependent claims.

In the following description, the invention will be illustrated in detail with reference to the accompanying drawings, in which Figures 1a and Ib show alternative pressure arrangements made by the method of the invention, and Fig. 1e illustrates a process entity enabled by the method of the invention.

BNSDOCID: <FI 111348B1 I> 111348 8

The invention relates to a method for treating textiles, in which the textile T is attached to its separate printing area P for at least printing it on the printing press 1. The textile T is transferred to the printing press P from the printing press 1 for further processing such as primary drying machine 2, evaporation machine 3, washing machine 4, 6 and / or a corresponding process device.

As a preferred embodiment of the method according to the invention, the printing medium P and the textile T attached thereto are transferred from the printing machine 1 to a further process of textiles via a centrally controlled and / or automated conveyor system. The textile attached to the printing medium 15 is then subjected to one or more successive stages of the processing of the textile by conveyor-specific conveyors 1a, 2a, 3a, 4a, 5a and / or 6a.

The textile T is secured to the printing substrate P by means of a durable fastening arrangement of printing process 1 such as printing 1, primary drying 2, evaporation 3, washing 4 and secondary drying 5, in particular to enable printing on reactive reagents. In a particularly preferred embodiment, the textile T is attached to the printing substrate P by a chemical attachment arrangement, such as a thermally active adhesive, an adhesive adhesive, a material and / or the like.

In a further preferred embodiment of the method according to the invention, a pressure assembly PA consisting of one cut textile piece (Figure Ib) or all printable textile pieces (Figure 1a) of one or more products is designed for the printing substrate P, which is printed or applied using a suitable adhesive or material. to the area of the substrate P according to the design pressure arrangement PA. In this context, particularly when printing on BNSDOCID: <EN 111348B1 I> 111348 9 for the whole cut textile product, pressure arrangements PA and / or printing templates are made in size, particularly with a view to making the printed patterns continue from one textile article to another and / or; sizes can be adapted to the size of textile products.

In a further preferred embodiment of the method, the textile T affixed to the printing substrate P, such as one or more textile pieces affixed thereto, is printed on a sheet or meter printing machine by means of printing templates, an ink jet machine or the like. In this connection, of course, there is no need to produce a printing press in the color jet printing, but the printing base is positioned at a convenient position on the conveyor of the printing press 1 so that the various colors are precisely obtained at the desired points.

For the removal of the printed textile pieces 6, for example, an infrared heater can be used, the surface temperature of which can be precisely adjusted, for example, according to the heat-active adhesive used.

The printing substrates P pass through, for example, as shown in Fig. 25, a printing press 1, a primary dryer 2, a steam generator 3, a washing unit 4 and a secondary dryer 5. The printing substrates P are returned, after the unloading station 6, along the conveyor, either to the position of the cutting pieces or, if necessary, to remove the heat-active adhesive 30 and then again to press / apply the heat-active adhesive. Removed cut pieces are taken to the sewing shop, for example, there is no need for a raw material store between the weight and the sewing shop. The production lead time is thus short.

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It is understood that the invention is not limited to the embodiments described or described above, but that it can be modified within the scope of the inventive concept according to the particular printing needs. First of all, it is clear that the printing medium used in the process can be made from a variety of materials, so that for example, printing media made of rubber material and / or suitably anchored by adhesive material 5 must withstand all stages of the process. C temperatures. Naturally, it is possible to utilize so-called print media in connection with print media. vacuum or suction arrangements, however, which require additional hardware solutions other than the above-described type of chemical attachment arrangements.

The printing medium used in the method may be, for example, wide in a conveyor belt of a large 15 printing press (e.g. 200 cm) and so long that even the printable parts of several products can fit on one large printing medium. In addition, 20 colored thermo-active adhesives can be used for printing or otherwise applying an adhesive area to the print media, making it easier to place the cut pieces in the correct positions. On the other hand, the size of the print media can be used to adjust the number of pieces and product to be printed at a time, so that the print stencils are designed according to the kappa layout and color range. Each different size of garment may have its own print media and screen sieves, or a different size distribution arrangement (especially small pieces) may be made on the same print media.

30 BNSDOCID: <FI 111348B1 I>

Claims (8)

111348 A method for treating textiles, wherein the textile (T) is attached to a separate printing substrate (P) 5 for at least printing it on a printing press (1), characterized in that the textile (T) is attached to the printing press (P) and such as a primary drying machine (2), a vaporizer (3), a washing machine (4), a secondary drying machine (5), a stripper (6) and / or a similar process device. Method according to Claim 1, characterized in that the printing medium (P) and the textile (T) attached thereto are transferred from the printing machine (1) to the textile further processing process via a centrally controlled and / or automated conveyor system. Method according to Claim 1 or 2, characterized in that the textile (T) attached to the printing substrate (P) is transferred in one or more successive stages of the treatment process by process machine-specific conveyors (1a, 2a, 3a, 4a, 5a and / or 6a). 25 Method according to one of the preceding claims 1 to 3, characterized in that the textile (T) is attached to the printing substrate (P) by all the processing steps applied thereto, such as printing (1), primary drying (2), evaporation (3), washing (3). 4) and secondary drying (5) with a durable attachment arrangement, in particular to enable printing with reactive dyes. Method according to Claim 4, characterized in that the textile (T) is attached to the printing substrate (P) by a chemical attachment arrangement, such as a heat-active adhesive, an adhesive, a material and / or the like. BNSDOCID: <FI 111348B1 I> 111348 A method according to claim 5, characterized in that a printing arrangement (PA) consisting of one cut textile piece or all 5 printable textile pieces of one or more products is designed for the printing medium (P), which is printed or applied using a suitable adhesive or material. in the pressure pad (PA) area of the pad (P). 10 Method according to Claim 6, characterized in that, in particular when printing large printing templates for the whole cut textile product, printing arrangements (PA) and / or printing bands are made in size, in particular in order to make the printed patterns continue from one textile piece to another. / or that the size of the patterns can be adapted to the size of the textile products. 20 Method according to one of the preceding claims 1 to 7, characterized in that the textile (T) attached to the printing substrate (P), such as one or more textile pieces attached thereto, is printed (1) on a press or meter by printing presses, inkjet or the like. BNSDOCID: <FI 111348B1 I> 111348