Blanket belt transfer dyeing system

Abstract

The present invention relates to a blanket belt transfer dyeing system, comprising a first blanket belt dyeing assembly and a second blanket belt dyeing assembly that are arranged in series and are respectively configured to dye two surfaces to be dyed of a fabric. Each of the blanket belt dyeing assemblies comprises: two transmission rollers, axes of rotation of the two transmission rollers being parallel to each other and being located in the same horizontal plane; a seamless annular blanket belt, which partially surrounds the outer peripheral surfaces of the transmission rollers and can run in a rotary manner; a two-way scraper device, which acts on the portion of the blanket belt that surrounds a first transmission roller; and an opposite-pressure dyeing device comprising a pressure roller and a back-pressure roller, wherein the pressure roller is configured to apply pressure towards the back-pressure roller on the fabric in a dyeing area between the pressure roller and the back-pressure roller, such that ink on the blanket belt is transferred onto the surface to be dyed of the fabric. The first blanket belt dyeing assembly and the second blanket belt dyeing assembly extend substantially in parallel to each other with a distance therebetween in a vertical direction, and at least partially overlap vertically, and the blanket belts of the first blanket belt dyeing assembly and the second blanket belt dyeing assembly rotate in opposite directions.

Description

Carpet transfer dyeing system Technical Field

[0001] The present invention relates to the field of fabric printing and dyeing systems, and more particularly to a carpet transfer dyeing system. Background Art

[0002] Along with the invention of textiles, humans also developed dyeing technology. As early as 15,000 years ago, primitive humans began dyeing fabrics with red iron oxide mineral pigments. By 1450 AD, Europe's dyeing industry had developed to a moderate level, with dyeing techniques and dye applications mastered. In 1471, dyers from across Europe gathered in London, England, to discuss dyeing techniques and adopt the first charter, establishing the Dyers' Association. After World War II, the continued growth of the textile industry spurred the development of the dye industry, reaching its peak in the 1980s.

[0003] In the 1990s, as countries around the world prioritized environmental protection and health, numerous regulations on dyeing and printing were introduced, placing pressure on many dyeing factories to conduct research and development. In recent years, outdated dyeing and printing techniques have been gradually phased out. Market and societal demands have driven dyeing and printing companies to integrate new technologies, information technology, and processes into textile printing and dyeing production processes, focusing on key social issues such as energy conservation, environmental protection, cost control, efficiency improvement, and quality enhancement.

[0004] Dyeing is the process of imparting a specific color to a textile by physically or chemically bonding a dye to fabric fibers, or by chemically incorporating pigments onto the fibers. Dyeing is performed under specific conditions, including temperature, time, pH, and the use of dyeing auxiliaries. The dyed product should exhibit uniform color and good color fastness. Existing dyeing methods for textiles are primarily categorized as exhaust dyeing and pad dyeing. Exhaust dyeing involves immersing the fabric in a dye solution, gradually incorporating the dye into the fabric. This method is suitable for dyeing a wide variety of textiles in small batches. Rope dyeing and jig dyeing also fall into this category. Pad dyeing involves first immersing the fabric in the dye solution, then passing it through rollers to evenly incorporate the dye solution into the fabric, followed by treatment such as steaming or hot-melting. This method is suitable for dyeing large quantities of textiles. However, exhaust dyeing and pad dyeing are extensive production methods, requiring significant water consumption and generating large amounts of dye-containing wastewater after washing. Every ton of textile printing and dyeing in my country consumes 100 to 200 tons of water, of which 80 to 90% becomes wastewater. This wastewater is characterized by high pollutant concentrations, a wide variety of pollutants, high alkalinity, variable water quality, toxic and harmful components, and high chroma, making it one of the most difficult industrial wastewaters to treat. With the development of society and the improvement of individual and family living standards, people's demand for environmental protection and health is growing stronger, and extensive traditional dyeing methods are gradually being phased out.

[0005] In order to meet the needs of the market and society, the applicant has also developed transfer dyeing equipment and process methods, such as the transfer dyeing equipment with patent application number ZL201710048416.4 and the transfer dyeing method with application number ZL201710048417.9. In production practice, the applicant also found that the transfer dyeing equipment in the prior art mainly uses a transfer roller as a temporary transfer carrier. Although the equipment structure is compact, the production operation and maintenance of the equipment require high professional skills from the production operators, which is not conducive to the large-scale popularization of transfer dyeing technology. In addition, the dye solution used in the previous transfer dyeing technology must contain a paste to make the dye solution reach a certain viscosity before transfer dyeing can be carried out. This not only increases the cost, but also reduces the penetration effect of the dye in the fabric.

[0006] In practice, especially for double-sided dyeing of fabrics, there is a demand for improvement of dyeing equipment in terms of ease of operation and maintenance, improving production efficiency, reducing costs and improving dyeing effects.

[0007] Summary of the Invention

[0008] The task of the present invention is to provide a carpet transfer dyeing system, which improves double-sided dyeing of fabrics in one of the above-mentioned aspects of easy operation and maintenance, improved production efficiency, reduced costs and improved dyeing effect.

[0009] Therefore, the present invention provides a carpet tape transfer dyeing system for dyeing fabric, wherein the carpet tape transfer dyeing system comprises a first carpet tape dyeing assembly and a second carpet tape dyeing assembly arranged in series, and the fabric passes through the first carpet tape dyeing assembly and the second carpet tape dyeing assembly in sequence during dyeing, wherein the first carpet tape dyeing assembly is used to dye one of two opposite surfaces to be dyed of the fabric, and the second carpet tape dyeing assembly is used to dye the other surface to be dyed of the fabric, and the first carpet tape dyeing assembly and the second carpet tape dyeing assembly respectively comprise:

[0010] - two drive rollers, the rotation axes of which are parallel to each other and lie substantially on the same horizontal plane;

[0011] - a seamless endless carpet belt, the carpet belt partially surrounding the outer circumference of the at least two driving rollers and capable of being driven by the at least two driving rollers to perform a rotating operation;

[0012] a bidirectional scraper device detachably acting on a portion of the carpet belt that surrounds a first drive roller of the at least two drive rollers and arranged to apply ink for dyeing the fabric to an outer surface of the carpet belt;

[0013] - a counter-press dyeing device, the counter-press dyeing device comprising a pressing roller facing the outer surface of the carpet belt and a back-pressing roller facing away from the outer surface of the carpet belt, the carpet belt passing between the pressing roller and the back-pressing roller during dyeing, wherein the pressing roller is configured to apply pressure toward the back-pressing roller to the fabric entering the dyeing zone between the pressing roller and the back-pressing roller, so as to press the surface of the fabric to be dyed facing the carpet belt and the outer surface of the carpet belt carrying ink against each other, thereby transferring the ink on the carpet belt to the surface of the fabric to be dyed,

[0014] The first carpet dyeing assembly and the second carpet dyeing assembly are spaced apart from each other and extend substantially in parallel and at least partially overlap each other, and the carpets of the two carpets rotate in opposite directions.

[0015] This overall arrangement of the carpet transfer dyeing system can achieve an overall compact and optimized arrangement of the entire device on the one hand, and can achieve double-sided dyeing with the best efficiency for the fabric on the other hand.

[0016] According to some embodiments, the first carpet dyeing assembly and the second carpet dyeing assembly respectively include an ink distribution roller, wherein the ink distribution roller is arranged between the bidirectional scraper device and the counter-pressure dyeing device in the rotation direction of the carpet, and the ink distribution roller rotates on the outer surface of the carpet to which the ink is applied and / or moves transversely to the rotation direction of the carpet.

[0017] According to some embodiments, the ink distribution roller rests against the first transmission roller with a blanket belt in between.

[0018] According to some embodiments, the first carpet tape dyeing assembly and the second carpet tape dyeing assembly respectively include a carpet tape cleaning device, wherein the carpet tape cleaning device includes, in sequence in the rotation direction of the carpet tape, a brush roller for brushing ink from the outer surface of the carpet tape and a scraper for scraping ink from the outer surface of the carpet tape, the carpet tape cleaning device also includes a spray pipe for spraying water on the brush roller itself and / or the carpet tape portion upstream of the brush roller, and a water receiving pan is provided below the spray pipe, the brush roller, and the scraper. The carpet tape cleaning device is configured to clean the outer surface of the carpet tape after the fabric is separated from the carpet tape.

[0019] According to some embodiments, the first carpet tape dyeing assembly and the second carpet tape dyeing assembly respectively include a tension roller for tensioning the carpet tape, wherein the tension roller is disposed between the at least two transmission rollers and arranged upstream of the bidirectional scraper device in the rotation direction of the carpet tape.

[0020] According to some embodiments, the first carpet tape dyeing assembly and the second carpet tape dyeing assembly are respectively provided with a fabric drying device downstream thereof, wherein the fabric drying device is respectively configured to dry the fabric after the fabric is separated from the carpet tapes of the first carpet tape dyeing assembly and the second carpet tape dyeing assembly.

[0021] According to some embodiments, the fabric drying device is configured as an infrared radiation drying device for drying the carpet tape by infrared radiation or a hot air drying device for drying the carpet tape by hot air.

[0022] According to some embodiments, the carpet tape includes a carpet tape base, a transfer pressing area disposed on the carpet tape base, and a coating layer disposed on the transfer pressing area, the coating layer being configured to temporarily absorb ink applied by a bidirectional doctor blade device.

[0023] According to some embodiments, the transfer pressure-bearing layer has a thickness of 0.5 mm to 1.0 mm.

[0024] According to some embodiments, the transfer pressure-bearing layer is formed by a pressure-bearing layer film made of elastic glue.

[0025] According to some embodiments, the elastic adhesive has a formula composition by weight of:

[0026] According to some embodiments,

[0027] The rubber is nitrile rubber, EPDM rubber, or natural rubber; and / or

[0028] The reinforcing filler is white carbon black or light calcium carbonate; and / or

[0029] The rubber accelerator is accelerator M, or accelerator D, or accelerator CZ.

[0030] According to some embodiments, the foaming agent is a microsphere foaming agent, wherein the foaming agent is obtained by reacting 400 to 600 parts by mass of an aqueous dispersion of magnesium hydroxide, 1.5 to 2.5 parts by mass of a 2-ethylhexyl sodium sulfate solution, 80 to 120 parts by mass of acrylonitrile, 60 to 80 parts by mass of methacrylonitrile, 30 to 50 parts by mass of a hydrocarbon, 0.8 to 1.2 parts by mass of 1,4-butylene dimethacrylate, and 2.5 to 3.5 parts by mass of dilauroyl peroxide.

[0031] According to some embodiments, the magnesium hydroxide aqueous dispersion contains 1.5% wt of magnesium hydroxide, and / or the sodium 2-ethylhexyl sulfate solution contains 1.5% wt of sodium 2-ethylhexyl sulfate.

[0032] According to some embodiments, the pressure-bearing layer film is stacked and vulcanized on the carpet tape substrate, so that the pressure-bearing layer film is compositely connected to the carpet tape substrate, thereby forming a transfer pressure-bearing layer.

[0033] According to some embodiments, the coating layer is configured as a photosensitive resin layer.

[0034] According to some embodiments, the photosensitive resin layer has a composition in parts by weight:

[0035] According to some embodiments,

[0036] The thermoplastic elastomer resin is a styrene-butadiene-styrene triblock copolymer or a styrene-isoprene-styrene triblock copolymer; and / or

[0037] The photoinitiator is phthalide ketal, or an acetophenone derivative, or phthaloylphosphine oxide; and / or

[0038] The cross-linking agent is tripropylene glycol diacrylate, hexanediol diacrylate, or trimethylolpropane triacrylate; and / or

[0039] The antioxidant is ditetradecyl thiodipropionate, or dioctadecanol thiodipropionate, or poly (dipropylene glycol) phenyl phosphite.

[0040] According to some embodiments, functional components are further added to the photosensitive resin layer. That is, in addition to the above components, commonly used functional components known in the art, such as polymerization inhibitors, flame retardants, plasticizers, etc., may be added to the photosensitive resin layer according to actual target requirements.

[0041] Therefore, according to some embodiments, the functional component is a polymerization inhibitor, and / or a flame retardant, and / or a plasticizer.

[0042] The photosensitive resin layer can be manufactured as follows: first, a thermoplastic elastomer resin is refined using a rubber mixer; a photoinitiator, a crosslinking agent, and an antioxidant are sequentially added during the refining process. The refining process uniformly blends the thermoplastic elastomer resin with the other components. Next, the uniformly blended thermoplastic elastomer resin and other components are pressed into a flat, soft film. In a subsequent step, the soft film can be adhered to a pressure-bearing film layer and laminated to form the film. Finally, a PET polyester protective film is applied to the coating layer to protect the surface.

[0043] According to some embodiments, the coating layer has at least one of the following characteristics:

[0044] The thickness of the coating layer is 2 mm to 20 mm;

[0045] The surface hardness of the coating layer is 45 to 90 Shore degrees.

[0046] According to some embodiments, the surface structure of the carpet is a carved surface structure, and the carved surface structure has at least one of the following features:

[0047] The pattern of the engraved surface structure is circular or polygonal;

[0048] The number of lines of the engraved surface structure is 10 to 800;

[0049] The pit depth of the engraved surface structure is 8 μm to 120 μm.

[0050] The engraved surface structure is achieved using a platemaking device known in the art of flexographic platemaking. Specifically, the engraved surface structure can be manufactured in the following manner: first, a negative platemaking film is prepared based on the pattern of the engraved surface structure, wherein the mesh pits of the engraved surface structure are located in a negative pattern, i.e., the negative pattern positions in the platemaking film are opaque; then, the carpet strip is placed on the platemaking machine with the surface to be engraved facing upwards; after removing the PET polyester protective film, the negative platemaking film is placed on the photosensitive resin layer and vacuumed to seal them together; then, exposure is performed to cause the photosensitive resin not covered by the negative pattern to undergo a cross-linking reaction to form a water-insoluble polymer matrix; finally, development is performed, i.e., a water-based developer is used to dissolve and wash away the resin not cross-linked due to being covered by the negative pattern, thereby forming the engraved surface structure.

[0051] According to some embodiments, the bidirectional scraper device comprises:

[0052] a scraper assembly comprising a blade holder, two scrapers, and corresponding scraper pressing plates, wherein the blade holder extends in the longitudinal direction and has a groove on a side facing the first transmission roller, the groove forming a space for accommodating ink to be supplied to the carpet strip, the two scrapers being obliquely mounted on both sides of an opening of the groove in the transverse direction with their blade tips facing each other and extending in the longitudinal direction, and the scraper pressing plate being used to press the scrapers against the blade holder;

[0053] end sealing components, the end sealing components being disposed at two longitudinal ends of the blade holder and being used to seal two longitudinal ends of the scraper assembly;

[0054] a shifting mechanism having a pivoting component for pivotally moving the scraper assembly between an operative position and a non-operative position, wherein in the operative position, the scraper is pressed against the carpet belt, and the two scrapers of the scraper assembly, the carpet belt surface between the two scrapers, and the end sealing component together form a closed ink chamber, and in the non-operative position, the scraper assembly is separated from the carpet belt; and

[0055] An adjustment mechanism is provided for adjusting the contact pressure between the scraper and the carpet belt when the scraper assembly is in the working position.

[0056] According to some embodiments, the pivoting component of the displacement mechanism is disposed at a first transverse end portion of the bidirectional scraper device, and the adjustment mechanism is disposed at a second transverse end portion opposite to the first transverse end portion.

[0057] According to some embodiments, the adjustment mechanism includes a nut-screw mechanism and an adjustment portion fixed to the scraper assembly, and the contact pressure is adjusted by interaction between the nut-screw mechanism and the adjustment portion in combination with the pivoting component of the displacement mechanism.

[0058] According to some embodiments, the two scrapers are a reverse scraper and a forward scraper, respectively, wherein the reverse scraper is used to scrape off excess ink supplied to the carpet belt, and the forward scraper is used to remove impurities on the carpet belt and perform sealing.

[0059] According to some embodiments, the reverse scraper is disposed near a first transverse end of the bidirectional scraper device, and the forward scraper is disposed near a second transverse end of the bidirectional scraper device.

[0060] According to some embodiments, the scraper contact angle of the reverse scraper is between 120° and 160°, wherein the scraper contact angle is the angle between the tangential velocity direction of the carpet belt at the contact point between the scraper and the carpet belt and the extension line of the scraper from the blade back to the blade tip.

[0061] According to some embodiments, the forward scraper has a contact angle of 20° to 60°, wherein the contact angle is the angle between the tangential velocity direction of the carpet belt at the contact point between the scraper and the carpet belt and the extension line of the scraper from the blade back to the blade tip.

[0062] According to some embodiments, the blade cutting edges of the two scrapers are not parallel to the tangent plane of the carpet belt, or the blade cutting edges of the two scrapers have an oblique angle ranging from 20° to 40°.

[0063] According to some embodiments, the scraper is made of stainless steel or ceramic, and the thickness of the scraper is between 0.15 mm and 0.20 mm.

[0064] According to some embodiments, the end sealing component is installed in the groove of the tool holder in an interference fit manner.

[0065] According to some embodiments, the end sealing member is formed by two clamping plates with a sealing material arranged between the two clamping plates.

[0066] According to some embodiments, the sealing material is polyurethane rubber.

[0067] According to some embodiments, the counter-press dyeing device of the second carpet dyeing assembly is disposed substantially directly below the second driving roller of the first carpet dyeing assembly, so that the fabric is vertically guided toward the second carpet dyeing assembly after leaving the first carpet dyeing assembly.

[0068] According to some embodiments, the first carpet tape dyeing assembly and the second carpet tape dyeing assembly are arranged substantially in mirror symmetry.

[0069] The beneficial effects of the present invention include, but are not limited to:

[0070] The two carpet tape dyeing components of the carpet tape transfer dyeing system of the present invention are arranged in series, and dye the two to-be-dyed surfaces of the fabric independently and sequentially. This not only ensures or improves the overall dyeing efficiency of the two to-be-dyed surfaces, but also avoids interference between the two surfaces during dyeing, thereby greatly improving the dyeing quality.

[0071] In the present invention, a seamless endless blanket is used as a temporary carrier for transfer dyeing, which eliminates the loss and waste of paper or film and is relatively low-carbon and environmentally friendly. In addition, low-viscosity ink can be used directly without adding any thickeners such as pastes, thereby reducing dyeing costs while improving dyeing effects such as the permeability of the fabric.

[0072] During the transfer dyeing process using a traditional blanket belt, the rubber is compressed, but its volume doesn't decrease. Instead, it deforms and squeezes backward, which can easily cause bulges. Especially when the equipment is running at high speed, the blanket belt is subjected to alternating stresses. Before the first bulge has recovered, the bulge caused by the second extrusion will appear again. This inevitably causes deformation of the printed dots, resulting in defects such as overprint streaks on the dyed fabric, greatly affecting the quality of the printed product. In contrast, the blanket belt according to the present invention includes a transfer pressure-bearing layer, wherein the foaming agent in the transfer pressure-bearing layer creates an air cushion effect within the transfer pressure-bearing layer. When transfer pressure acts on the transfer pressure-bearing layer, the transfer pressure-bearing layer with an air cushion effect produces vertical compression, rather than forming bulges in the blanket belt due to compression on all sides. This is because the microporous bubbles evenly distributed in the transfer pressure-bearing layer shrink in volume when under pressure, thus producing the vertical compression effect. After rolling, the closed micropores or air pockets quickly return to their original shape due to their own pressure. This eliminates defects such as wrinkles and streaks in the coating, significantly improving the uniformity of dyeing on the fabric. Therefore, the carpet belt structure of the present invention is more suitable for high-speed carpet belt transfer dyeing production and can produce a uniform color effect on the fabric surface.

[0073] In addition, in order to achieve uniform dyeing, the present invention adopts a bidirectional scraper device. Compared with other ink supply systems, the bidirectional scraper of the present invention avoids the volatilization of water solvent during use of ink or slurry due to the completely closed ink chamber, stabilizes the color and hue of long-term large-scale dyeing, and avoids the foam problem that occurs during use; in addition, the ink or slurry is scraped evenly and cleanly, and there is no problem of residual liquid flowing; the liquid circulation in the ink chamber is smoother, and can adapt to production under high vehicle speed conditions.

[0074] The technical features mentioned above and the technical features to be mentioned below, as well as the technical features shown in the drawings, may be combined with each other arbitrarily, as long as the combined technical features do not contradict each other. All technically feasible feature combinations are included in the technical content of the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The present invention will be further described below with reference to the accompanying drawings using exemplary embodiments, wherein:

[0076] FIG1 is an overall schematic diagram of a carpet transfer dyeing system having a first carpet dyeing assembly and a second carpet dyeing assembly according to one embodiment of the present invention;

[0077] 2 is a schematic front view of a bidirectional scraper device for a carpet transfer dyeing system according to one embodiment of the present invention;

[0078] FIG3 is a side sectional view taken along section line AA in FIG2 ;

[0079] FIG4 is a side cross-sectional view taken along section line BB in FIG2; and

[0080] FIG5 is a cross-sectional view of a carpet tape according to one embodiment of the present invention. DETAILED DESCRIPTION

[0081] Below is described an illustrative embodiment of a carpet tape transfer dyeing system according to the present invention. In this specification, for the sake of explanation only, each system, structure and device are schematically depicted in the accompanying drawings, but all features of the actual system, structure and device are not described, such as well-known functions or structures are not described in detail, in order to avoid unnecessary details that make the present invention unclear. Of course, it should be understood that in any practical application, many specific implementation decisions need to be made to reach the specific goals of the developer or user, and it is necessary to comply with system-related and industry-related restrictions, and these specific goals may be different with the difference of practical applications. In addition, it should be understood that although such specific implementation decisions are complicated and time-consuming, this is a routine task for those of ordinary skill in the art who benefit from the present invention.

[0082] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of those terms and phrases by those skilled in the relevant art. No special definition of a term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art, is intended to be implied by consistent usage of a term or phrase herein. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly set forth in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0083] Unless the content requires otherwise, throughout the following description, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open and inclusive sense, that is, as in "including but not limited to".

[0084] FIG1 illustrates a carpet tape transfer dyeing system 100 for dyeing two opposing surfaces of a fabric. The carpet tape transfer dyeing system 100 includes a first carpet tape dyeing assembly 1 and a second carpet tape dyeing assembly 2 arranged in series (along a path of a fabric T). Each of the first and second carpet tape dyeing assemblies 1 and 2 is configured to dye one of the two surfaces of the fabric T. The first carpet tape dyeing assembly 1 will now be described in detail with reference to the accompanying drawings.

[0085] In Figure 1 , the first carpet dyeing assembly 1 is arranged horizontally as a whole and includes two drive rollers 3.1 and 3.2 arranged parallel to each other at the left and right ends of the first carpet dyeing assembly 1. A seamless, endless carpet belt 4 partially surrounds the outer circumferences of the two drive rollers 3.1 and 3.2 and can be driven by the two drive rollers 3.1 and 3.2 for rotational operation. Dyeing ink is applied to the outer surface of the seamless, endless carpet belt 4.

[0086] 1 , in order to apply ink to the carpet belt 4 , a bidirectional scraper device 5 is provided on the first drive roller 3 . 1 on the left side of the two drive rollers 3 . 1 , 3 . 2 . The bidirectional scraper device 5 is configured to apply dyeing ink from the ink chamber to the outer surface of the carpet belt 4 .

[0087] An ink distribution roller 7 is provided downstream of the bidirectional scraper device 5 and close to the bidirectional scraper device 5 along the rotation direction R1 of the carpet belt 4. The ink distribution roller 7 can rotate on the outer surface of the carpet belt 4 where the ink is applied and / or move transversely to the rotation direction R1 of the carpet belt 4 to further evenly distribute the ink on the surface of the carpet belt 4.

[0088] A counter-pressure dyeing device 6 is disposed approximately midway between the two drive rollers 3.1 and 3.2, downstream of the ink distribution roller 7. The counter-pressure dyeing device 6 comprises a pressure roller 6.1 disposed on the outside or upper side of the endless carpet belt 4 and a back-pressure roller 6.2 disposed on the inside of the endless carpet belt 4. The pressure roller 6.1 is configured to apply pressure toward the back-pressure roller 6.2 when the fabric T enters the dyeing zone between the pressure roller 6.1 and the back-pressure roller 6.2, thereby pressing the surface of the fabric T to be dyed against the inked outer surface of the carpet belt 4, thereby transferring the ink on the carpet belt 4 to the surface of the fabric T to be dyed. The pressure roller 6.1 is equipped with a pressure mechanism.

[0089] As shown in Figure 1, the fabric T is guided vertically from above toward the carpet belt 4. After being turned 90 degrees to the right by the pressure roller 6.1, it adheres to the carpet belt 4 and then passes between the pressure roller 6.1 and the back pressure roller 6.2. From the moment it enters the counter-pressure dyeing device 6 until it leaves the second drive roller 3.2, the fabric T moves horizontally with the carpet belt 4, remaining in contact with the two. During this time, the ink on the carpet belt 4 is fully transferred to the dyed surface of the fabric T facing the carpet belt 4. Optionally, one or more counter-pressure dyeing devices 6 can be additionally provided between the counter-pressure dyeing device 6 and the second drive roller 3.2 to better press the fabric T and carpet belt 4 against each other and increase the ink transfer rate. At the second drive roller 3.2, the fabric T is turned 90 degrees downward by the second drive roller 3.2, then separated from the carpet belt 4 and guided further downward.

[0090] The first carpet dyeing assembly 1 is equipped with a carpet cleaning device 8 downstream of the separation point. The carpet cleaning device 8 includes a spray pipe 8.1, a brush roller 8.2, and a scraper 8.3, arranged in the direction of rotation of the carpet 4. The spray pipe 8.1 sprays cleaning liquid onto the carpet 4 and / or the brush roller 8.2. The brush roller 8.2 then scrubs the outer surface of the carpet 4. Finally, the scraper 8.3 scrapes away any residual mixture on the carpet 4. A water collection tray 8.4 is provided below the spray pipe 8.1, brush roller 8.2, and scraper 8.3 to collect ink and cleaning liquid removed during the cleaning process. A scraper backing roller 8.5 can also be provided at the contact point between the scraper 8.3 and the carpet 4. Thus, the carpet 4 is positioned between the scraper 8.3 and the scraper backing roller 8.5 at this contact point, thereby more thoroughly scraping away any mixture on the carpet 4.

[0091] The cleaned carpet belt 4 has substantially no ink on its outer surface and then continues to rotate back to the first transmission roller 3.1. At the first transmission roller 3.1, the bidirectional scraper device 5 again applies ink for dyeing on the outer surface of the carpet belt 4, so that the carpet belt 4 can be used to dye the fabric T again.

[0092] Furthermore, a tension roller 9 may be additionally provided on the cleaned carpet belt section for adjusting the tension of the carpet belt 4. In the embodiment of FIG1 , the tension roller 9 is provided upstream of the first drive roller 3.1 in the rotation direction R1 of the carpet belt 4.

[0093] After being separated from the carpet web 4 at the second drive roller 3.2 of the first carpet web dyeing assembly 1, the fabric T is dried in a downstream fabric drying device 10. The fabric drying device 10 is configured as an infrared radiation drying device for drying the carpet web 4 using infrared radiation or a hot air drying device for drying the carpet web 4 using hot air.

[0094] The dried fabric T then enters the second carpet dyeing assembly 2, where the other side of the fabric T is dyed. Similar dyeing steps are repeated in the second carpet dyeing assembly 2 as in the first carpet dyeing assembly 1.

[0095] The second carpet dyeing assembly 2 is arranged below the first carpet dyeing assembly 1 at a distance. The two extend parallel and at least partially overlap. In order to dye the other surface of the fabric T to be dyed, the second carpet dyeing assembly 2 can have the same layout structure (including components and the positional relationship between the components) as the first carpet dyeing assembly 1, but the two are arranged in mirror symmetry relative to each other (in a direction perpendicular to the paper) (the height difference between the two is not considered here). The mirror symmetry arrangement of the second carpet dyeing assembly 2 and the first carpet dyeing assembly 1 means that the overall layout structure of the two is substantially mirror symmetric. In other words, most of the components of the two are mirror symmetric. It can be seen that the components of the two, such as the drive rollers 3.1, 3.2, carpet 4, bidirectional scraper device 5, counter-pressure dyeing device 6, carpet cleaning device 8, ink distribution roller 7, and tension roller 9, are mirror symmetric. However, it is permitted that some components are arranged in a non-strict mirror symmetric manner due to practical needs. The carpet rotation direction R1 of the first carpet dyeing assembly 1 is opposite to the carpet rotation direction R2 of the second carpet dyeing assembly 2. Specifically, in FIG1 , the carpet tape 4 of the first carpet tape dyeing assembly 1 rotates clockwise, and the carpet tape 4 of the second carpet tape dyeing assembly 2 rotates counterclockwise.

[0096] This enables an overall compact and optimized arrangement of the apparatus, and enables double-sided dyeing of the fabric T with optimal efficiency.

[0097] The counter-dyeing device 6 of the second carpet strip dyeing assembly 2 is substantially positioned directly below the second drive roller 3.2 of the first carpet strip dyeing assembly 1, thereby directing the fabric T vertically toward the second carpet strip dyeing assembly 2. In other embodiments, the counter-dyeing device 6 of the second carpet strip dyeing assembly 2 may be slightly offset to the left, directly below the second drive roller 3.2 of the first carpet strip dyeing assembly 1, thereby achieving a more compact arrangement of the first and second carpet strip dyeing assemblies 1 and 2. After the fabric T is turned 90 degrees to the left by the pressure roller 6.1 of the counter-dyeing device 6 of the second carpet strip dyeing assembly 2, it begins to move horizontally to the left along with the carpet strip 4 to dye the other side of the fabric T to be dyed. After the other side of the fabric T to be dyed has been dyed by the carpet strip 4, the fabric T exits the second carpet strip dyeing assembly 2 horizontally to the left and separates from the carpet strip 4. The fabric T then passes again through the fabric drying device 10 assigned to the second carpet strip dyeing assembly 2 for drying. The fabric T then continues to undergo other processing steps.

[0098] Since the second carpet dyeing assembly 2 is constructed similarly to the first carpet dyeing assembly 1, identical or similar parts will not be described in detail herein. Reference is made to the above description of the first carpet dyeing assembly 1. This arrangement of the first carpet dyeing assembly 1 and the second carpet dyeing assembly 2 enables a space-saving arrangement of the carpet transfer dyeing system 100, making the entire apparatus compact.

[0099] Figure 2 illustrates a bidirectional scraper device 5 for use in the first and second carpet dyeing assemblies 1 and 2. In this specification, with reference to Figure 2 , the longitudinal direction refers to the axial extension of the drive roller 3.1; the transverse direction refers to the direction perpendicular to the longitudinal direction and located in the plane of the paper in Figure 2 ; and the lateral direction refers to the direction perpendicular to both the longitudinal and transverse directions. The terms "upper" and "lower" are used only to indicate the relative positions of the components in Figure 2 and do not represent their actual positions during use.

[0100] As shown in FIG2 , according to one embodiment of the present invention, the bidirectional scraper device 5 of the present invention includes a scraper assembly 5.10, a shifting mechanism 5.20, an adjusting mechanism 5.30 and a locking mechanism 5.40.

[0101] The scraper assembly 5.10 includes a blade holder 5.11, two scrapers 5.12 and two scraper pressure plates 5.13.

[0102] As shown in FIG2 , the blade holder 5.11 extends longitudinally. The blade holder 5.11 has a longitudinally extending groove 5.14 on the side facing the carpet 4, forming a receiving space for ink. The opening of the groove 5.14 is rectangular and centrally formed on the blade holder 5.11.

[0103] The two scrapers 5.12 extend longitudinally and are positioned on either side of the opening of the groove 5.14 of the blade holder 5.11. Specifically, as shown in Figure 2, the two scrapers 5.12 are tilted with their blade tips facing each other, so that their blade tips contact the outer surface of the carpet belt 4 on the drive roller 3.1 at a specific scraper contact angle. The scraper contact angle refers to the angle between the circumferential tangential velocity of the carpet belt 4 at the contact point between the scraper 5.12 and the scraper extension line (which is perpendicular to the length of the scraper 5.12 and extends from the back of the scraper to the scraper tip).

[0104] Referring to FIG. 3 , the two scrapers 5.12 are respectively referred to as a reverse-direction scraper 5.121 and a forward-direction scraper 5.122, depending on the contact angles of the scrapers. The reverse-direction scraper 5.121 scrapes away excess ink from the carpet web, thereby providing the ink supply required for dyeing, while the forward-direction scraper 5.122 primarily seals and removes residual ink and accumulated impurities.

[0105] The contact angle of the reverse-direction scraper 5.121 is greater than 90°. This allows the scraper to scrape the ink from the carpet strip 4, and the ink applies pressure to the scraper, keeping it in close contact with the surface of the carpet strip 4. This improves scraping efficiency and reduces wear on both the scraper and the carpet strip 4. Furthermore, because the reverse-direction scraper 5.121 forms an obtuse angle with the carpet strip 4, ink does not accumulate between the scraper and the carpet strip 4, resulting in smoother ink circulation within the ink chamber.

[0106] In an embodiment of the present invention, the scraper contact angle of the forward scraper 5.122 is between 20° and 60°. Preferably, the scraper contact angle of the forward scraper 5.122 is between 30° and 50°. More preferably, the scraper contact angle of the forward scraper 5.122 is 45°.

[0107] In an embodiment of the present invention, the scraper contact angle of the reverse scraper 5.121 is between 120° and 160°. Preferably, the scraper contact angle of the reverse scraper 5.121 is between 130° and 150°. More preferably, the scraper contact angle of the reverse scraper 5.121 is 135°.

[0108] At the end of the scraper blade that contacts the carpet strip 4 (i.e., the end of the scraper blade's blade edge), the scraper blade has a longitudinally extending end surface, i.e., the scraper blade edge front. The scraper blade edge fronts of the two scrapers are not parallel to the tangent plane of the carpet strip 4, or the scraper blade edge fronts of the two scrapers have an oblique angle between 20° and 40°. In this case, the contact surface width formed by the scraper blade edge front and the carpet strip 4 is generally 1-2 mm.

[0109] In addition, the scraper 5.12 can be made of stainless steel or ceramic. The thickness of the scraper 5.12 is generally between 15 filaments and 20 filaments (or between 0.15 mm and 0.20 mm).

[0110] The two scraper pressing plates 5.13 are respectively used to press the corresponding scraper 5.12 onto the blade holder 5.11. In an embodiment of the present invention, the scraper pressing plates 5.13 press the scraper 5.12 onto the blade holder 5.11 via screws.

[0111] End seals 5.15 are mounted at each longitudinal end of the blade holder 5.11. These seals 5.15 are installed in grooves 5.14 of the blade holder 5.11 with an interference fit, sealing the longitudinal ends of the scraper assembly 5.10. The end seals 5.15 comprise two clamping plates 5.3, with a sealing material 5.4 secured between them. The sealing material 5.4 can be secured between the two clamping plates using bolts.

[0112] Traditionally, sealing material 5.4 is made of foam, such as foam plastic. Foam sealing materials are all fixed in width, which has the disadvantage of a short lifespan. In the embodiment of the present invention, sealing material 5.4 is made of polyurethane rubber, which allows for long-term repeated use and allows for adjustable width.

[0113] According to the above configuration, when the scraper assembly 5.10 is pressed against the carpet belt 4, a closed ink chamber is formed by the carpet belt surface between the two scrapers 5.12, the two scrapers 5.12, the groove 5.14 of the blade holder 5.11, and the two end sealing parts 5.15 at both ends of the blade holder 5.11.

[0114] According to an embodiment of the present invention, the bidirectional scraper device 5 further includes two shifting mechanisms 5.20, respectively disposed at the longitudinal ends of the scraper assembly 5.10, for enabling the scraper assembly 5.10 to pivotally move between an operative position and a non-operative position. In the operative position, the scrapers press against the carpet strip 4, and the scraper assembly 5.10, together with the carpet strip surface between the two scrapers 5.12, forms a closed ink chamber. In the non-operative position, the scraper assembly 5.10 is separated from the carpet strip 4.

[0115] Each shifting mechanism 5.20 includes a pivoting component for pivotally rotating the scraper assembly 5.10 between an operating position and a non-operating position. In an embodiment of the present invention, the pivoting component is a shaft and bearing assembly, with each bearing assembly comprising a bearing 5.21 and a bearing sleeve 5.22. Furthermore, the bearing assembly may also include a shaft end cover plate 5.23 and a blind cover 5.24.

[0116] The bearing assembly is mounted on one end of a first pile head (shaft) 5.8. The other end of the first pile head 5.8 is fixed to a first end (the lower end in FIG. 2 ) of a support plate 5.6 in the transverse direction. The support plate 5.6 is fixed to a movable frame (not shown) by bolts.

[0117] The pivoting member is connected to the scraper assembly 5.10 via a connecting member. In an embodiment of the present invention, an adjustment plate 5.7 is secured to the bearing sleeve 5.22. The first transverse end of the adjustment plate 5.7 (the lower end in FIG. 2 ) is bolted to the bearing sleeve 5.22. The longitudinal ends of the scraper assembly 5.10 are secured to the adjustment plate 5.7 via the end plates 5.2. This achieves the connection between the pivoting member and the scraper assembly 5.10.

[0118] The second end of the second pile (shaft) 5.9 is connected to the second end (upper end in FIG. 2 ) of the adjustment plate 5.7 and the second end (upper end in FIG. 2 ) of the support plate 5.6 in the transverse direction, respectively. The second ends of the adjustment plate 5.7 and the support plate 5.6 are opposite to their first ends in the transverse direction.

[0119] According to the above structure, the scraper assembly 5.10 can pivot about the pivot member (bearing assembly) via the adjustment plate 5.7, thereby achieving movement between an operative position and a non-operative position. When the scraper assembly 5.10 is moved to its operative position, it can be fixed in its operative position by various common fixing devices. In an embodiment of the present invention, the scraper assembly 5.10 is fixed in the operative position by a screw and a scraper device for fixing, and a threaded hole on the frame that cooperates with the screw. When it is necessary to move the scraper assembly 5.10 from the operative position to the non-operative position, the screw for fixing is unscrewed and the scraper assembly 5.10 is pivoted by the shifting mechanism.

[0120] According to an embodiment of the present invention, the bidirectional scraper device 5 further comprises two adjustment mechanisms 5.30 for adjusting the contact pressure between the scraper blades of the scraper assembly 5.10 and the carpet belt 4. The two adjustment mechanisms 5.30 are located at the longitudinal ends of the scraper assembly 5.10. Furthermore, each adjustment mechanism 5.30 is located at the end opposite to the end where the pivoting member is located in the transverse direction, that is, the adjustment mechanism 5.30 is located at the second end of the adjustment plate 5.7 in the transverse direction.

[0121] As shown in Figures 2 and 4, the adjustment mechanism 5.30 includes an adjustment screw 5.31 and a fixing plate 5.32. The fixing plate 5.32 is located longitudinally between the support plate 5.6 and the adjustment plate 5.7, on the side facing away from the carpet belt. The fixing plate 5.32 is fixed to the bidirectional scraper device 5, for example, by bolting to the second end (the upper end in Figure 2) of the adjustment plate 5.7 in the transverse direction.

[0122] The adjusting screw rod 5.31 passes through the second pile head 5.9 in a lateral direction and is threadedly connected to the second pile head 5.9. The front end of the adjusting screw rod 5.31 faces the fixing plate 5.32.

[0123] Thus, when the contact pressure between the scraper of the scraper assembly 5.10 and the carpet belt 4 needs to be adjusted, the adjusting screw 5.31 can be rotated clockwise or counterclockwise to move it toward or away from the fixing plate 5.32 in the lateral direction.

[0124] For example, if the contact pressure between the scraper and the carpet strip 4 is too high, the adjusting screw 5.31 is rotated to move it laterally toward the fixed plate 5.32. The front end of the adjusting screw 5.31 presses against the fixed plate 5.32, pushing the fixed plate 5.32 away from the carpet strip 4. Because the fixed plate 5.32 is fixed to the adjusting plate 5.7, the adjusting plate 5.7 can be pivoted about the pivot member away from the carpet strip 4. This pivoting of the adjusting plate 5.7 causes the scraper assembly 5.10 to move away from the carpet strip 4, thereby reducing the contact pressure between the scraper 5.12 and the carpet strip 4.

[0125] The adjustment mechanism 5.30 of the present invention can be used to finely adjust the contact pressure between the scraper and the carpet strip 4 after the scraper assembly 5.10 is moved to the operating position by the shifting mechanism. By adjusting the screw 5.31 against the fixed plate 5.32, combined with the pivoting member of the shifting mechanism, the scraper assembly 5.10 can rotate slightly around the pivoting member of the shifting mechanism, thereby precisely adjusting the contact pressure between the scraper and the carpet strip 4 to within a desired pressure range.

[0126] Furthermore, the adjustment mechanism 5.30 of the present invention utilizes only two components, an adjustment screw 5.31 and a fixed plate 5.32, in conjunction with the existing pivoting components of the displacement mechanism for adjustment. Consequently, the adjustment mechanism of the present invention has a small number of components and a very simple structure. This eliminates the need for a separate and complex adjustment mechanism in the scraper assembly, thereby facilitating the structural layout of the bidirectional scraper assembly 5 and saving costs.

[0127] In an embodiment of the present invention, as shown in FIG4 , the bidirectional scraper device 5 further includes two locking mechanisms 5.40 for locking the scraper assembly 5.10 in its adjusted working position. Each locking mechanism 5.40 includes a locking nut 5.41, on which a handle 5.42 is mounted. The locking nut 5.41 is threadedly connected to the adjusting screw 5.31. The locking nut 5.41 is located on the side of the second stud 5.9 opposite the fixing plate 5.32. In other words, the locking nut 5.41 and the fixing plate 5.32 are located on either side of the second stud 5.9 in the lateral direction.

[0128] When the adjusting screw 5.31 is adjusted to a suitable position, the locking nut 5.41 is rotated by the handle rod 5.42 so that the locking thread 5.41 is tightly pressed against the second pile head 5.9, thereby locking the adjusted working position.

[0129] Although not shown in the accompanying drawings, the bidirectional scraper device 5 of the present invention may also include a constant temperature heating system for maintaining the ink chamber temperature between room temperature and 40 degrees Celsius. This maintains the desired ink temperature, mitigates the effects of seasonal ambient temperatures, and helps maintain stable printing quality. Furthermore, preheated ink dries faster upon exposure to ambient air, thus facilitating high-speed production.

[0130] Although the pivoting component and the adjusting mechanism at one longitudinal end of the bidirectional scraper device are described with reference to the accompanying drawings, those skilled in the art may appreciate that corresponding pivoting components and adjusting mechanisms may be provided at the other longitudinal end of the bidirectional scraper device according to this embodiment, which will not be described in detail here.

[0131] FIG5 shows a carpet tape 4 for dyeing. The carpet tape 4 includes a carpet tape base 4.1, a transfer and receiving area 4.2 disposed on the carpet tape base 4.1, and a coating layer 4.3 disposed on the transfer and receiving area 4.2. The coating layer 4.3 is configured to temporarily absorb ink applied by a bidirectional doctor blade. The temporarily absorbed ink can subsequently be transferred to a fabric T.

[0132] The thickness of the transfer pressure-bearing layer 4.2 may be 0.5 mm to 1.0 mm.

[0133] The transfer pressure-bearing layer 4.2 can be formed by a pressure-bearing layer film made of elastic glue.

[0134] The formula composition of the elastic glue can be (by weight):

[0135] The transfer pressure-bearing layer 4.2, composed of the aforementioned elastic adhesive formulation, has proven highly advantageous through numerous tests and practice. In particular, the use of a foaming agent and its aforementioned ratio within the transfer pressure-bearing layer 4.2 enable the formation of an optimized air cushion effect within the transfer pressure-bearing layer 4.2. When transfer pressure is applied to the transfer pressure-bearing layer 4.2, the air cushioning effect creates vertical compression without forming bulges within the carpet strip 4 due to compression around the edges.

[0136] The rubber may be nitrile rubber, EPDM rubber, or natural rubber; and / or the reinforcing filler may be white carbon black, or light calcium carbonate; and / or the rubber accelerator may be accelerator M, accelerator D, or accelerator CZ.

[0137] The foaming agent may be a microsphere foaming agent, wherein the foaming agent is obtained by reacting 400 to 600 parts by mass, preferably 500 parts by mass, of an aqueous dispersion of magnesium hydroxide, 1.5 to 2.5 parts by mass, preferably 2 parts by mass of a 2-ethylhexyl sodium sulfate solution, 80 to 120 parts by mass, preferably 100 parts by mass of acrylonitrile, 60 to 80 parts by mass, preferably 70 parts by mass of methacrylonitrile, 30 to 50 parts by mass, preferably 40 parts by mass of a hydrocarbon, 0.8 to 1.2 parts by mass, preferably 1 part by mass of 1,4-butylene glycol dimethacrylate, and 2.5 to 3.5 parts by mass, preferably 3 parts by mass of dilauroyl peroxide.

[0138] The magnesium hydroxide aqueous dispersion may contain 1.5% wt of magnesium hydroxide, and / or the sodium 2-ethylhexyl sulfate solution may contain 1.5% wt of sodium 2-ethylhexyl sulfate.

[0139] The pressure-bearing layer film can be stacked with the carpet tape substrate 4.1 and vulcanized (preferably in a vulcanizer) so that the pressure-bearing layer film is compositely connected to the carpet tape substrate 4.1, thereby forming the transfer pressure-bearing layer 4.2.

[0140] The carpet belt substrate 4.1 is a commercially available rubber carpet belt substrate, or a wool felt carpet belt substrate, a polyester carpet belt substrate or an aramid carpet belt substrate in the industry, preferably a rubber carpet belt substrate.

[0141] The coating layer 4.3 can be configured as a photosensitive resin layer.

[0142] According to some embodiments, the photosensitive resin layer has a composition in parts by weight:

[0143] The thermoplastic elastomer resin is: styrene-butadiene-styrene triblock copolymer, or styrene-isoprene-styrene triblock copolymer;

[0144] The photoinitiator is phthalic ketal, or an acetophenone derivative, or phthaloylphosphine oxide;

[0145] The cross-linking agent is tripropylene glycol diacrylate, hexanediol diacrylate, or trimethylolpropane triacrylate;

[0146] The antioxidant is ditetradecyl thiodipropionate, dioctadecyl thiodipropionate, or poly(dipropylene glycol) phenyl phosphite.

[0147] In addition to the above components, the present invention can also add commonly used functional components known in the art, such as polymerization inhibitors, flame retardants, plasticizers, etc., into the formula according to target requirements.

[0148] The photosensitive resin layer is manufactured by first mixing a thermoplastic elastomer resin in a rubber mixer, with a photoinitiator, crosslinker, and antioxidant added gradually during the mixing process. The thermoplastic elastomer resin is then uniformly blended with the other ingredients. Next, the resin is pressed into a flat, soft film, which is then glued to the pressure-bearing film layer and laminated to form the film. Finally, a PET polyester protective film is applied to protect the surface layer.

[0149] The coating layer 4.3 may have at least one of the following characteristics: a thickness of 2 mm to 20 mm, preferably 3 mm to 15 mm; and a surface hardness of 45 to 90 Shore A. By setting the above parameters of the coating layer 4.3, good pattern transfer quality can be achieved.

[0150] The surface structure of the carpet strip 4 may be an engraved surface structure having at least one of the following characteristics: the engraved surface structure has a circular or polygonal pattern, preferably a rhombus, square, hexagon, or the like; the number of lines in the engraved surface structure ranges from 10 to 800; and the depth of the mesh pits in the engraved surface structure ranges from 8 μm to 120 μm. The engraved surface structure can increase ink carrying capacity. Furthermore, by adjusting the engraved surface structure parameters, a good ink carrying effect can be achieved.

[0151] The engraved surface structure can be achieved using a plate-making machine known in the art of flexographic platemaking. Specifically, a negative plate-making film is first prepared based on the pattern of the engraved surface structure. The pits of the engraved surface structure are located in the negative pattern, meaning that the negative pattern in the plate-making film is opaque. Next, the blanket strip is placed on the plate-making machine with the surface to be engraved facing up. After removing the PET protective film, the negative plate-making film is placed on the photosensitive resin layer and sealed with a vacuum seal. Exposure to light causes the photosensitive resin not covered by the negative pattern to undergo a cross-linking reaction, forming a water-resistant polymer matrix. Finally, development is performed using an aqueous developer to dissolve and rinse away the resin not cross-linked due to being covered by the negative pattern, thereby forming the engraved surface structure described herein.

[0152] The present invention may include any feature or feature combination or generalization disclosed herein, whether implicit or explicit, and is not limited to the scope of any limitation listed above. Any elements, features and / or structural arrangements described herein may be combined in any suitable manner.

[0153] The particular embodiments disclosed above are exemplary only, and it will be apparent to those skilled in the art having the benefit of the teachings herein that the present invention may be modified and practiced in different but equivalent manners. It is therefore apparent that changes and modifications may be made to the particular embodiments disclosed above, and all such variations are considered to fall within the scope and spirit of the present invention.

Claims

1. A carpet transfer dyeing system (100), the carpet transfer dyeing system being used for dyeing a fabric (T), characterized in that: The carpet tape transfer dyeing system comprises a first carpet tape dyeing assembly (1) and a second carpet tape dyeing assembly (2) which are arranged in series and the fabric (T) passes through the first carpet tape dyeing assembly and the second carpet tape dyeing assembly in sequence during dyeing, wherein the first carpet tape dyeing assembly is used to dye one of two opposite surfaces to be dyed of the fabric, and the second carpet tape dyeing assembly is used to dye the other surface to be dyed of the fabric, and the first carpet tape dyeing assembly and the second carpet tape dyeing assembly respectively comprise: - two drive rollers (3.1, 3.2), the rotation axes of the two drive rollers being parallel to each other and being substantially in the same horizontal plane; - a seamless endless carpet belt (4), which partially surrounds the outer circumference of the at least two driving rollers and can be driven by the at least two driving rollers to perform a rotating operation; - a bidirectional scraper device (5) which acts detachably on the portion of the carpet belt surrounding the first of the at least two drive rollers and is arranged to apply ink for dyeing the fabric to the outer surface of the carpet belt; - a counter-pressure dyeing device (6), the counter-pressure dyeing device (6) comprising a pressure roller (6.1) facing the outer surface of the carpet belt and a back pressure roller (6.2) facing away from the outer surface of the carpet belt, the carpet belt (4) passing between the pressure roller (6.1) and the back pressure roller (6.2) during dyeing, wherein the pressure roller is configured to apply pressure toward the back pressure roller to the fabric (T) entering the dyeing area between the pressure roller and the back pressure roller, so as to press the surface of the fabric to be dyed facing the carpet belt and the outer surface of the carpet belt carrying ink against each other, thereby transferring the ink on the carpet belt to the surface of the fabric to be dyed, The first carpet dyeing assembly (1) and the second carpet dyeing assembly (2) extend substantially in parallel with a distance therebetween and at least partially overlap each other, and their carpet rotation directions (R1, R2) are opposite to each other.

2. The carpet transfer dyeing system according to claim 1, characterized in that: The first carpet belt dyeing assembly and the second carpet belt dyeing assembly respectively comprise an ink distributing roller (7), wherein the ink distributing roller is arranged between the bidirectional scraper device (5) and the counter-pressure dyeing device (6) in the rotation direction of the carpet belt, and the ink distributing roller (7) rotates on the outer surface of the carpet belt to which ink is applied and / or moves transversely to the rotation direction of the carpet belt (4).

3. The carpet transfer dyeing system according to claim 2, characterized in that: The ink distribution roller abuts against the first transmission roller with a blanket belt in between.

4. The carpet transfer dyeing system according to claim 1, characterized in that: The first carpet tape dyeing assembly and the second carpet tape dyeing assembly respectively comprise a carpet tape cleaning device (8), wherein the carpet tape cleaning device comprises, in sequence in the rotation direction of the carpet tape, a brush roller (8.2) for brushing ink off the outer surface of the carpet tape and a scraper (8.3) for scraping ink off the outer surface of the carpet tape, the carpet tape cleaning device also comprises a spray pipe (8.1) for spraying water on the brush roller (8.2) itself and / or the carpet tape portion upstream of the brush roller (8.2), and a water receiving tray (8.4) is provided below the spray pipe, the brush roller and the scraper, and the carpet tape cleaning device is configured to clean the outer surface of the carpet tape after the fabric is separated from the carpet tape.

5. The carpet transfer dyeing system according to claim 1, characterized in that: The first carpet tape dyeing assembly and the second carpet tape dyeing assembly respectively comprise a tension roller (9) for tensioning the carpet tape, wherein the tension roller is arranged between the at least two transmission rollers and is arranged upstream of the bidirectional scraper device in the rotation direction of the carpet tape.

6. The carpet transfer dyeing system according to claim 1, characterized in that: The first carpet tape dyeing assembly and the second carpet tape dyeing assembly are respectively provided with a fabric drying device (10) downstream thereof, wherein the fabric drying device is respectively configured to dry the fabric after the fabric is separated from the carpet tapes of the first carpet tape dyeing assembly and the second carpet tape dyeing assembly.

7. The carpet transfer dyeing system according to claim 6, characterized in that: The fabric drying device is configured as an infrared radiation drying device for drying the carpet tape by infrared radiation or a hot air drying device for drying the carpet tape by hot air.

8. The carpet transfer dyeing system according to claim 1, characterized in that: The carpet belt (4) comprises a carpet belt base (4.1), a transfer pressure zone (4.2) arranged on the carpet belt base, and a coating layer (4.3) arranged on the transfer pressure zone, wherein the coating layer is configured to temporarily absorb ink applied by a bidirectional scraper device.

9. The carpet transfer dyeing system according to claim 8, characterized in that: The transfer pressure-bearing layer has a thickness of 0.5 mm to 1.0 mm.

10. The carpet transfer dyeing system according to claim 8, characterized in that: The transfer pressure-bearing layer is formed by a pressure-bearing layer film made of elastic glue.

11. The carpet transfer dyeing system according to claim 10, characterized in that: The formula composition of the elastic glue is as follows by weight:

12. The carpet transfer dyeing system according to claim 11, characterized in that: The rubber is nitrile rubber, EPDM rubber, or natural rubber; and / or The reinforcing filler is white carbon black or light calcium carbonate; and / or The rubber accelerator is accelerator M, or accelerator D, or accelerator CZ.

13. The carpet transfer dyeing system according to claim 11, characterized in that: The foaming agent is a microsphere foaming agent, wherein the foaming agent is obtained by reacting 400 to 600 parts by mass of a magnesium hydroxide aqueous dispersion, 1.5 to 2.5 parts by mass of a 2-ethylhexyl sodium sulfate solution, 80 to 120 parts by mass of acrylonitrile, 60 to 80 parts by mass of methacrylonitrile, 30 to 50 parts by mass of a hydrocarbon, 0.8 to 1.2 parts by mass of 1,4-butylene glycol dimethacrylate and 2.5 to 3.5 parts by mass of dilauroyl peroxide.

14. The carpet transfer dyeing system according to claim 13, characterized in that: The magnesium hydroxide aqueous dispersion contains 1.5%wt of magnesium hydroxide, and / or the 2-ethylhexyl sodium sulfate solution contains 1.5%wt of 2-ethylhexyl sodium sulfate.

15. The carpet transfer dyeing system according to claim 10, characterized in that: The pressure-bearing layer film is stacked and vulcanized on the carpet tape substrate, so that the pressure-bearing layer film is compositely connected to the carpet tape substrate, thereby forming a transfer pressure-bearing layer.

16. The carpet transfer dyeing system according to claim 8, characterized in that: The coating layer is configured as a photosensitive resin layer.

17. The carpet transfer dyeing system according to claim 16, characterized in that: The composition of the photosensitive resin layer is as follows by weight:

18. The carpet transfer dyeing system according to claim 17, characterized in that: The thermoplastic elastomer resin is a styrene-butadiene-styrene triblock copolymer, or a styrene-isoprene-styrene triblock copolymer; and / or The photoinitiator is phthalide, or an acetophenone derivative, or phthaloylphosphine oxide; and / or The crosslinking agent is tripropylene glycol diacrylate, hexanediol diacrylate, or trimethylolpropane triacrylate; and / or The antioxidant is ditetradecyl thiodipropionate, or dioctadecyl thiodipropionate, or poly(dipropylene glycol) phenyl phosphite.

19. The carpet transfer dyeing system according to claim 17, characterized in that: A functional component is further added to the photosensitive resin layer.

20. The carpet transfer dyeing system according to claim 19, characterized in that: The functional component is a polymerization inhibitor, and / or a flame retardant, and / or a plasticizer.

21. The carpet transfer dyeing system according to claim 8, characterized in that: The coating layer has at least one of the following characteristics: The thickness of the coating layer is 2 mm to 20 mm; The surface hardness of the coating layer is 45 to 90 Shore degrees.

22. The carpet transfer dyeing system according to claim 8, characterized in that: The surface structure of the carpet is a carved surface structure, and the carved surface structure has at least one of the following features: The pattern of the engraved surface structure is circular or polygonal; The number of lines of the engraved surface structure is 10 to 800 lines; The pit depth of the engraved surface structure is 8 μm to 120 μm.

23. The carpet transfer dyeing system according to claim 1, characterized in that: The bidirectional scraper device (5) comprises: A scraper assembly (5.10) comprising a blade holder (5.11), two scrapers (5.12) and corresponding scraper pressure plates (5.13), wherein the blade holder extends in the longitudinal direction and has a groove (5.14) on the side facing the first transmission roller, wherein the groove forms a space for accommodating ink to be supplied to the blanket belt, and the two scrapers are provided with blade tips. The scraper pressing plate is installed obliquely on both sides of the opening of the groove in a relative manner and extends in the longitudinal direction, and is used to press the scraper onto the blade holder; An end sealing component (5.15), which is disposed at two longitudinal ends of the blade holder and is used to seal two longitudinal ends of the scraper assembly; a shifting mechanism (5.20), the shifting mechanism having a pivoting component for pivotally moving the scraper assembly between a working position and a non-working position, wherein in the working position, the scraper is pressed against the carpet belt, and the two scrapers of the scraper assembly together with the carpet belt surface between the two scrapers and the end sealing component form a closed ink chamber, and in the non-working position, the scraper assembly is separated from the carpet belt; and An adjusting mechanism (5.30) is used to adjust the contact pressure between the scraper and the carpet belt when the scraper assembly is in the working position.

24. The carpet transfer dyeing system according to claim 23, characterized in that: The pivoting component of the displacement mechanism is arranged at a first transverse end of the bidirectional scraper device, and the adjustment mechanism is arranged at a second transverse end opposite to the first transverse end.

25. The carpet transfer dyeing system according to claim 23, characterized in that: The adjustment mechanism comprises a nut-screw mechanism and an adjustment portion fixed to the scraper assembly, and the contact pressure is adjusted through the interaction between the nut-screw mechanism and the adjustment portion in combination with the pivoting component of the displacement mechanism.

26. The carpet transfer dyeing system according to claim 23, characterized in that: The two scrapers are respectively a reverse scraper (5.121) and a forward scraper (5.122), wherein the reverse scraper is used to scrape off excess ink supplied to the carpet belt, and the forward scraper is used to remove impurities on the carpet belt and perform sealing.

27. The carpet transfer dyeing system according to claim 26, characterized in that: The reverse scraper is disposed close to a first transverse end of the bidirectional scraper device, and the forward scraper is disposed close to a second transverse end of the bidirectional scraper device.

28. The carpet transfer dyeing system according to claim 26, characterized in that: The scraper contact angle of the reverse scraper is between 120° and 160°, wherein the scraper contact angle is the angle between the tangential velocity direction of the carpet belt at the contact point between the scraper and the carpet belt and the extension line of the scraper from the blade back to the blade tip.

29. The carpet transfer dyeing system according to claim 26, characterized in that: The contact angle of the forward scraper is between 20° and 60°, wherein the contact angle is the angle between the tangential velocity direction of the carpet belt at the contact point between the scraper and the carpet belt and the extension line of the scraper from the back of the blade to the tip of the blade.

30. The carpet transfer dyeing system according to claim 23, characterized in that: The blade front surfaces of the two scrapers are not parallel to the tangent plane of the carpet belt, or the blade front surfaces of the two scrapers have an oblique angle between 20° and 40°.

31. The carpet transfer dyeing system according to claim 23, characterized in that: The scraper is made of stainless steel or ceramic, and the thickness of the scraper is between 0.15 mm and 0.20 mm.

32. The carpet transfer dyeing system according to claim 23, characterized in that: The end sealing component is installed in the groove of the tool holder in an interference fit manner.

33. The carpet transfer dyeing system according to claim 23, characterized in that: The end sealing element is formed by two clamping plates, between which a sealing material is arranged.

34. The carpet transfer dyeing system according to claim 33, characterized in that: The sealing material is polyurethane rubber.

35. The carpet transfer dyeing system of claim 1, wherein: The counter-press dyeing device (6) of the second carpet dyeing assembly (2) is basically arranged directly below the second driving roller of the first carpet dyeing assembly (1), so that the fabric is vertically guided to the second carpet dyeing assembly (2) after leaving the first carpet dyeing assembly (1).

36. The carpet transfer dyeing system of claim 1, wherein: The first carpet strip dyeing assembly (1) and the second carpet strip dyeing assembly (2) are arranged substantially in mirror symmetry.

Images