阅读说明：本技术 给湿处理设备和给湿处理方法 (Moistening processing equipment and moistening processing method ) 是由 钟博文 田龙 刘新刚 于 2021-08-06 设计创作，主要内容包括：本发明涉及给湿处理设备和给湿处理方法,用于通过场射流对用于织物的转印暂载体给湿处理。给湿处理设备包括：给湿区；用于将转印暂载体引导经过给湿区的引导系统；刀梁,其具有针管组件,这些针管组件具有压缩空气通道和由针管构成的给湿液通道；电源,用于在刀梁与转印暂载体之间产生静电场并且在针管尖端上产生电压。所述给湿液通过给湿液的供给压力、压缩空气流的作用以及施加在刀梁的静电的作用,作为液滴的射流从给湿液通道输出,所述液滴通过针管尖端上的电压而荷电,荷电的液滴散裂而形成带电雾滴群,所述带电雾滴群在静电场作用下朝转印暂载体移动和吸附到转印暂载体上。在此能缩短处理时间、减少助剂消耗、提高染色的得色量。(The invention relates to a moistening treatment device and a moistening treatment method, which are used for moistening a transfer printing temporary carrier for fabrics through field jet flow. The moistening processing device comprises: a moisture-feeding area; a guide system for guiding the transfer temporary carrier through the wet feeding zone; a knife beam having needle tube assemblies having a compressed air passage and a wetting liquid passage constituted by needle tubes; a power supply for generating an electrostatic field between the knife beam and the transfer temporary carrier and generating a voltage on the needle tip. The dampening solution is output from the dampening solution channel as a jet of droplets charged by a voltage on the tip of the needle tube by a supply pressure of the dampening solution, an action of a compressed air flow, and an action of static electricity applied to the blade beam, the charged droplets are scattered to form a charged mist droplet group, and the charged mist droplet group is moved toward and adsorbed onto the transfer temporary carrier by an electrostatic field. The treatment time can be shortened, the consumption of the auxiliary agent can be reduced, and the dyeing yield can be improved.)

1. A moistening processing apparatus for moistening a transfer temporary carrier for fabric by field jet, characterized in that the moistening processing apparatus comprises:

a moisture-feeding zone (20);

a guide system (10) configured for guiding the transfer temporary carrier (1) through the wet feed zone;

a knife beam (2) spaced apart from the transfer temporary carrier in the wet feed zone, the knife beam having a plurality of needle tube assemblies (3) arranged side by side for discharging the wet feed liquid, the needle tube assemblies each having a compressed air passage (22) and a wet feed liquid passage (21) formed by a needle tube having a needle tube tip;

a power supply (7) configured for applying a voltage to the knife beam such that an electrostatic field can be generated between the knife beam and the transfer temporary carrier and a voltage can be generated on the needle tip of each needle cannula assembly;

wherein the feed liquid is output from the feed liquid channel as a jet of droplets by a feed pressure of the feed liquid supplied to the blade beam, an action of a compressed air flow in the compressed air channel, and an action of static electricity applied to the blade beam, the droplets are charged by a voltage on a tip of the needle tube, the charged droplets are scattered by an interaction of a secondary air flow formed by the compressed air flow, an electrostatic field, and surface charges of the droplets, forming a charged mist droplet group (6) which is moved toward and adsorbed onto the transfer temporary carrier under the electrostatic field, so that the transfer temporary carrier is subjected to a feed process.

2. The moistening treatment apparatus according to claim 1, wherein the moistening liquid is a polar liquid; and/or

The wetting liquid is deionized water, water-soluble liquid or water dispersion type liquid; and/or

The temporary transfer printing carrier is transfer printing paper, a transfer printing film or a transfer printing blanket belt.

3. Moistening treatment device according to claim 1 or 2, characterized in that it has at least one of the following operating parameters:

the voltage of the power supply is 10-60 kV;

the distance between the tip of the needle tube and the temporary transfer printing carrier is 2-20 cm;

the pressure of the compressed air is 0.1-1.0 MPa;

the diameter of the wetting liquid channel is 0.1-2.5 mm;

the excess of the moisture supply liquid channel exceeding the compressed air channel is less than or equal to 5 mm;

the number of the knife beams sequentially arranged in the advancing direction of the temporary transfer printing carrier is 2-6;

the number of needle tube assemblies of the knife beam is 5-20.

4. Wetting treatment apparatus according to any one of claims 1 to 3, wherein the needle assembly comprises a central needle; and the needle cannula assembly comprises:

a compressed air passage annularly surrounding the syringe, or

A plurality of air holes or a plurality of slits which are distributed around the needle tube, wherein the air holes or the slits respectively form the compressed air channel; and/or

The needle tube assemblies are respectively provided with an air pump (4) for generating compressed air flow; and/or

The knife beams are respectively provided with a flow valve (5) for adjusting the flow of the moistening liquid conveyed to the knife beams.

5. Moistening treatment apparatus as claimed in any one of claims 1 to 4, wherein the guide system comprises one or more of a stentering filament-dividing roller, a tension roller, a corrective edge-aligning device and a traction device;

preferably, the guide system comprises a first stentering yarn-dividing roller (11), a first tension roller (13), a deviation-rectifying opposite-side device (14), a traction device (15), a second tension roller (17) and a second stentering yarn-dividing roller (18) which are sequentially arranged in the advancing direction of the transfer temporary carrier.

6. Moistening processing apparatus according to any of claims 1 to 5, wherein the guiding system is arranged to move the transfer temporary carrier in a vertical direction up or down through the moistening zone or in a horizontal direction; and/or

The knife beam is arranged transversely to the advancing direction of the transfer temporary carrier in the wetting area; and/or

The knife beam is provided with a reciprocating device for realizing the reciprocating transverse movement of the knife beam;

preferably, the reciprocating means comprises a drive motor (23) having a motor gear (24) which meshes with an eccentric gear (25), the oscillating motion of the eccentric gear being transmitted to the knife beam through a linkage mechanism such that the oscillating motion of the eccentric gear is converted into reciprocating lateral movement of the knife beam; and/or

Preferably, the reciprocating device is designed to ensure that the transverse movement amount of the knife beam is less than or equal to 50mm and/or the reciprocating frequency of the transverse movement of the knife beam is less than or equal to 80 times/minute; and/or

Preferably, the moistening treatment device comprises a plurality of knife beams, at least two of which are laterally reciprocable by a common reciprocating guide or by respective reciprocating guides with a predetermined phase difference.

7. Moistening treatment apparatus as claimed in any one of claims 1 to 6, wherein the plurality of air holes or the plurality of slits are distributed in a cross-section of the needle tube assembly on one or more circles concentric with the needle tube; or

The plurality of air holes or the plurality of slits are distributed on a regular polygon in the cross section of the needle tube component;

preferably, the plurality of air holes or the plurality of slits are distributed on a regular triangle or a square in the cross-section of the needle cannula assembly.

8. A dampening treatment method for dampening a transfer temporary carrier for fabric by field jet, characterized in that the dampening treatment method comprises the steps of:

guiding the transfer temporary carrier through a wet feeding area by a guiding system; and is

Wetting the temporary transfer printing carrier in a wetting area through a knife beam and a power supply;

wherein the knife beam is separated from the temporary transfer printing carrier in a wet feeding area, the knife beam is provided with a plurality of needle tube assemblies which are arranged side by side and used for outputting wet feeding liquid, the needle tube assemblies are respectively provided with a compressed air channel and a wet feeding liquid channel formed by needle tubes, and the needle tubes are provided with needle tube tips;

wherein the power supply applies a voltage to the knife beam such that an electrostatic field is generated between the knife beam and the transfer temporary carrier and a voltage is generated on the needle tip of each needle cannula assembly;

wherein the feed liquid is output from the feed liquid channel as a jet of droplets by a feed pressure of the feed liquid supplied to the blade beam, an action of a compressed air flow in the compressed air channel, and an action of static electricity applied to the blade beam, the droplets are charged by a voltage on a tip of the needle tube, the charged droplets are scattered by an interaction of a secondary air flow formed by the compressed air flow, an electrostatic field, and surface charges of the droplets to form a charged mist droplet group, and the charged mist droplet group is moved toward and adsorbed onto the transfer temporary carrier by the electrostatic field, so that the transfer temporary carrier is subjected to a feed process.

9. Moistening treatment method according to claim 8, characterized in that it is implemented by a moistening treatment apparatus according to any of claims 1 to 7.

Technical Field

The invention relates to the field of fabric printing and dyeing, in particular to a device and a method for moistening a transfer printing temporary carrier for fabric through field jet flow.

Background

The cold transfer printing process is based on wet transfer printing, wherein a complete transfer printing process system is formed through the integral research and development of a transfer temporary carrier, wet pretreatment, printing paste, transfer equipment and the like. The basic process of cold transfer printing can be: firstly, printing water-soluble or water-dispersible dye color paste to prepare a transfer printing temporary carrier (such as transfer printing paper, a transfer printing film, a circulating blanket belt or a transfer printing rubber roll) with patterns; then, the pretreated fabric is bonded to a temporary transfer carrier, and a predetermined pressure is applied to the bonded fabric and the temporary transfer carrier. The color paste on the transfer printing temporary carrier is dissolved by the pretreatment liquid carried by the fabric. Under a certain pressure, the dye is transferred onto the fabric and into the fabric gap, since the affinity of the dye for the fabric is greater than that of the transfer temporary support. After fixation, the fabric is washed by water to wash away trace size, hydrolytic dye and the like, and the fabric is washed to be neutral and then is dried and shaped to obtain a finished product. The wet pretreatment of the dampening treatment of the transfer temporary carrier can be a very important process of cold transfer printing. Whether the wet pretreatment quality can meet the requirements will affect the quality of the final product. The classic pretreatment method of cold transfer printing can be that the fabric to be printed is padded or coated by pretreatment liquid of a pretreatment device of a transfer printing machine, the treated fabric to be printed and transfer printing paper are mutually sealed, and transfer printing is completed by a transfer printing device. The fabric to be printed needs to be pretreated by pretreatment liquid, so the fabric to be printed is closely adhered to cold transfer printing paper in a wet state and is transferred, defects such as elongation, skewness and shrinkage of the fabric are easily generated, and the printed pattern distortion is caused, so the product quality is influenced.

Classic cold transfer printing requires a large amount of pretreatment liquid to wet-pretreat the fabric, which requires a certain residence time, a large amount of water and chemicals, and a large amount of energy consumption.

Disclosure of Invention

The invention aims to provide a moistening treatment device and a corresponding moistening treatment method for moistening a transfer printing temporary carrier for fabrics through field jet, thereby improving the production efficiency, shortening the treatment time of the transfer printing temporary carrier, reducing the consumption of auxiliary agents and improving the dyeing yield of fabric dyeing.

A first aspect of the present invention relates to a moistening treatment apparatus for moistening a transfer blanket for fabric by field jet. The moistening processing apparatus may include:

a moisture-feeding area;

a guide system configured to guide the transfer temporary carrier through the wet feed zone;

a knife beam spaced apart from the transfer temporary carrier in a wetting zone, the knife beam having a plurality of needle tube assemblies arranged side by side for outputting a wetting liquid, the needle tube assemblies respectively having a compressed air passage and a wetting liquid passage constituted by needle tubes, the needle tubes having needle tube tips;

a power supply configured to apply a voltage to the knife beam such that an electrostatic field can be generated between the knife beam and the transfer temporary carrier and a voltage can be generated on the needle tip of each needle cannula assembly;

wherein the feed liquid is output from the feed liquid channel as a jet of droplets by a feed pressure of the feed liquid supplied to the blade beam, an action of a compressed air flow in the compressed air channel, and an action of static electricity applied to the blade beam, the droplets are charged by a voltage on a tip of the needle tube, the charged droplets are scattered by an interaction of a secondary air flow formed by the compressed air flow, an electrostatic field, and surface charges of the droplets to form a charged mist droplet group, and the charged mist droplet group is moved toward and adsorbed onto the transfer temporary carrier by the electrostatic field, so that the transfer temporary carrier is subjected to a feed process.

The inventive dampening treatment device can suitably dampen the temporary transfer carrier with a reduced dampening solution consumption with an increased production efficiency compared to the conventional cold transfer printing process.

In some embodiments, the knife beam is arranged in the wetting zone transversely to the direction of travel of the transfer blanket carrier (for example offset by 45 °, preferably by 30 °, particularly preferably by 20 °, relative to a perpendicular to the direction of travel of the transfer blanket carrier), in particular perpendicularly to the direction of travel of the transfer blanket carrier.

In some embodiments, the power supply may have a constant, constant dc voltage. Alternatively, the voltage of the power supply may also be variable, for example, periodically according to a preset law. Alternatively or additionally, the voltage of the power supply may be adjustable.

In some embodiments, the fabric may be a woven, knitted, or nonwoven material. The woven fabric may be, for example, cotton.

In some embodiments, the wetting fluid may be a polar liquid.

In some embodiments, the moisturizing liquid can be deionized water, a water-soluble liquid, or a water-dispersible liquid.

In some embodiments, the transfer temporary carrier may be a transfer paper, a transfer film, or a transfer blanket.

In some embodiments, the moistening treatment device may have at least one of the following operating parameters:

the voltage of the power supply is 10-60kV, such as 20-40 kV;

the distance between the tip of the needle tube and the temporary transfer carrier is 2-20cm, preferably 3-10cm, for example 4-6 cm;

the pressure of the compressed air (gauge pressure) is 0.1-1.0MPa, preferably 0.2-0.8MPa, for example 0.4-0.6 MPa;

the diameter of the wetting fluid passage is 0.1-2.5mm, such as 0.2-2.0mm, preferably 0.4-1.6 mm;

the excess amount of the moisture supply liquid channel exceeding the compressed air channel is less than or equal to 5mm, such as less than or equal to 3 mm;

the number of the knife beams sequentially arranged in the traveling direction of the transfer temporary carrier is 2 to 6, for example, 3, 4 or 5;

the number of needle tubing assemblies of the blade beam is 5-20, such as 6-16, preferably 8-12, preferably the needle tubing assemblies are evenly distributed on the blade beam.

In some embodiments, the syringe assembly may include a central syringe defining the wetting fluid pathway.

In some embodiments, the syringe assembly may include a compressed air passage annularly surrounding the syringe.

In some embodiments, the needle cannula assembly may comprise a plurality of air holes arranged distributed, in particular evenly distributed, around the needle cannula, which air holes each constitute the compressed air channel.

In some embodiments, the needle cannula assemblies may each be provided with an air pump for generating a flow of compressed air.

In alternative embodiments, a common air pump for generating a compressed air flow can be associated with each needle cannula assembly, which air pump is connected to the respective needle cannula assembly via a plurality of branch lines, which can be provided with regulating valves.

In some embodiments, the knife beams may each be provided with a flow valve for regulating the flow of dampening solution supplied to the knife beams.

In some embodiments, the guide system may include one or more of a stenter wire dividing roller, a tension roller, a skew-aligning device, a traction device, and a steering roller.

In some embodiments, the guide system may include a first tenter dividing roller, a first tension roller, a skew correcting opposite side device, a traction device, a second tension roller, and a second tenter dividing roller, which are sequentially disposed in a traveling direction of the transfer temporary carrier.

In some embodiments, the guide system can be configured such that the transfer temporary carrier moves in a vertical direction upwards or downwards through the moistening zone or in a horizontal direction.

In some embodiments, the guide system can be configured such that the transfer blanket carrier moves obliquely through the wetting zone.

In some embodiments, the needle cannula is made of an electrically conductive material, such as a metallic material, and/or other components of the needle cannula assembly are made of a dielectric material, such as plastic.

In some embodiments, the knife beam may be provided with a reciprocating means for effecting reciprocating lateral movement of the knife beam.

In some embodiments, the shuttle may include a drive motor. The drive motor may be, for example, a variable frequency motor. The driving motor may have a motor gear, and the motor gear may be engaged with an eccentric gear, and a vibration motion of the eccentric gear may be transmitted to the blade beam through a link mechanism, so that the vibration motion of the eccentric gear may be converted into a reciprocating lateral movement of the blade beam.

In some embodiments, the linkage mechanism may include a link fixed to the eccentric gear, and the link may be connected to a swing arm, which may be connected to the knife beam connecting arm.

In some embodiments, the reciprocating means may be designed such that the amount of lateral movement of the blade beam is 50mm or less, such as 40mm or less, such as about 30mm or 25mm or 20 mm; and/or the frequency of reciprocation of the transverse movement of the blade beam is 80 times/min or less, for example 60 times/min or less.

In some embodiments, the moistening treatment apparatus may include a plurality of blade beams, at least two of which are laterally reciprocable by a common reciprocating guide or by respective reciprocating guides with a predetermined phase difference.

It is for example possible that the moistening device may comprise 4 knife beams, of which 2 are stationary and the other 2 can be moved in opposite directions (in other words with a phase difference of 180 °).

It is for example possible that the moistening device may comprise 4 knife beams that can be reciprocated, which in turn may have a phase difference of 60 °.

In some embodiments, the plurality of air holes or the plurality of slits may be distributed in a cross-section of the needle assembly on one or more circles concentric with the needle.

In some embodiments, the plurality of air holes or the plurality of slits may be distributed on a regular polygon in the cross-section of the needle cannula assembly.

In some embodiments, the plurality of air holes or the plurality of slits may be distributed on a regular triangle or square in the cross-section of the needle cannula assembly.

A second aspect of the present invention relates to a dampening treatment method for dampening a transfer temporary carrier for fabric by field jet. Preferably, the moistening treatment method may be implemented by a moistening treatment apparatus according to any one of the embodiments of the present invention. The moistening treatment method may include the steps of:

guiding the transfer temporary carrier through a wet feeding area by a guiding system; and is

Wetting the temporary transfer printing carrier in a wetting area through a knife beam and a power supply;

wherein the knife beam is separated from the temporary transfer printing carrier in a wet feeding area, the knife beam is provided with a plurality of needle tube assemblies which are arranged side by side and used for outputting wet feeding liquid, the needle tube assemblies are respectively provided with a compressed air channel and a wet feeding liquid channel formed by needle tubes, and the needle tubes are provided with needle tube tips;

wherein the power supply applies a voltage to the knife beam such that an electrostatic field is generated between the knife beam and the transfer temporary carrier and a voltage is generated on the needle tip of each needle cannula assembly;

wherein the feed liquid is output from the feed liquid channel as a jet of droplets by a feed pressure of the feed liquid supplied to the blade beam, an action of a compressed air flow in the compressed air channel, and an action of static electricity applied to the blade beam, the droplets are charged by a voltage on a tip of the needle tube, the charged droplets are scattered by an interaction of a secondary air flow formed by the compressed air flow, an electrostatic field, and surface charges of the droplets to form a charged mist droplet group, and the charged mist droplet group is moved toward and adsorbed onto the transfer temporary carrier by the electrostatic field, so that the transfer temporary carrier is subjected to a feed process.

In some embodiments, the moistening treatment method may further include: preparing a wetting liquid for transferring the temporary carrier; and/or injecting the moisturizing liquid into the liquid storage device.

The invention innovatively utilizes the characteristic that the humidifying liquid is atomized and jetted in an airflow field and/or an electrostatic field, and realizes the equipment and the method for carrying out micro-humidifying treatment on the transfer printing temporary carrier through field jet. The temporary transfer carrier micro-wetting process involves limited mass transfer from the wetting or treatment liquid to the temporary transfer carrier surface.

The characteristics of the atomized jet of the wetting liquid in the airflow field and/or the electrostatic field can accelerate the transfer of the wetting liquid in the wetting of the transfer temporary carrier, and can improve the transfer effect under the condition of avoiding or reducing the consumption of the pretreatment liquid, which can be a very promising technology. The field jet flow is applied to a cold transfer printing pretreatment system, so that the charged fog drop group of the wet supply liquid can be sprayed at high speed, the spraying speed can reach dozens of meters per second, and the charged fog drop group can be directly sprayed on the wet supply surface of the transfer printing temporary carrier. Such jetting may cause the flow of the dye ink in the surface pattern of the transfer temporary support, and thus may increase the speed of dye transfer. The field jet flow is introduced into micro wet treatment of temporary transfer carrier, and it is a method for raising production efficiency, and can shorten treatment time, reduce adjuvant consumption and raise dyeing yield.

In a field jet, an electric field can exert a force on charges (or charged particles) in the electric field, and the magnitude of the force can be expressed by the formula F ═ qE, where q is the charged amount and E is the electric field strength. When a high voltage is applied to the narrow tube when the liquid flows out from the narrow tube and drops, the liquid drops are broken into fine particles by electrostatic force, and a spray phenomenon occurs.

In the field jet flow, the tiny charged liquid drop jet flow forms periodic vibration due to the external disturbance, the liquid surface tension and the jet flow inertia, and ripples with different wavelengths are generated. Due to the different curvature radiuses of the corrugations, the surface charges of the liquid drops are unevenly distributed, and therefore the formation of the fog drops is accelerated. Charged tiny charged droplets are subjected to jet flow spalling to form droplets, and the droplets are polarized under the action of an electric field force to form a charged droplet group.

The inventor of the application develops a field jet transfer temporary carrier micro-wetting treatment method and corresponding treatment equipment by utilizing the characteristic that wetting liquid is atomized and jetted in an airflow field and/or an electric field. The inventors have found that the applied voltage has a significant effect on the charge-to-mass ratio of the wetting fluid during wetting by the field jet, wherein the charge-to-mass ratio of the wetting fluid generally tends to increase and decrease as the applied voltage increases. When the charge-to-mass ratio is increased, the repulsive force between droplets rises, and the coating material sprayed by the single needle tube is more widely covered. The voltage applied also has a significant effect on the wetting drop pattern, the number and size of the drops. The inventors have also found that the specific resistance of the wetting liquid has an effect on the wetting effect, wherein as the specific resistance increases, the droplet size increases and the coating coverage decreases. The resistivity of the wetting liquid is affected by its kind, viscosity and surface tension. The viscosity of the wetting liquid is increased, the charge carrier mobility is reduced, and the charge diffusion speed is reduced. Increased dynamic viscosity of the wetting fluid results in delayed atomization and increased droplet size. During the break-up of the jetting fluid into droplets, the increase in viscosity of the wetting fluid causes the secondary droplets to increase in size. In terms of surface tension of the wetting fluid, the electrical force generated by the applied potential needs to be able to overcome the surface tension in order to form a stable cone jet. The higher the surface tension, the greater the potential required, however this increases the probability of discharge.

It is further noted that the above-mentioned features, the features to be mentioned below and the features shown in the drawings individually can be combined with one another as desired, provided that the combined features are not mutually inconsistent. All technically feasible combinations of features are the subject of the technical disclosure explicitly mentioned in the text.

Drawings

The invention is further explained below with the aid of exemplary embodiments with reference to the drawing.

Fig. 1 is a schematic view of a vertical type moistening processing device for moistening a transfer temporary carrier by field jet according to a first embodiment of the invention.

Fig. 2 is a schematic view of a horizontal type moistening processing device for moistening processing of a pad carrier by a jet flow according to a second embodiment of the invention.

Fig. 3 is a view showing a layout of one of knife beams of the moistening processing apparatus of fig. 1 and 2 with respect to a transfer temporary carrier.

FIG. 4A is a schematic perspective view of a needle cannula assembly in accordance with an embodiment.

FIG. 4B is a schematic perspective view of a needle cannula assembly in accordance with another embodiment.

Figure 4C is a cross-sectional view of the needle cannula assembly of figures 4A and 4B.

Fig. 5A to 5F are cross-sectional views of needle cannula assemblies according to other embodiments.

Fig. 6 and 7 are schematic top and side views of a shuttle for two adjacent knife beams of a moistening treatment apparatus.

Detailed Description

Fig. 1 is a schematic view of a vertical type moistening processing device for moistening a transfer temporary carrier by field jet according to a first embodiment of the invention.

The moistening treatment device comprises a guide system 10 configured for guiding the transfer temporary carrier 1 through a moistening zone 20. In the embodiment shown in fig. 1, the guide system is arranged such that the transfer temporary carrier 1 moves in the vertical direction through the dampening zone 20, and therefore, the respective knife beams 2 arranged in the dampening zone 20 extend horizontally, overlapping each other in the vertical direction. The number of tool beams 2 may be, for example, 2-6. In fig. 1, 4 tool beams 2 are shown. The number of tool beams 2 can also be exactly one.

The guide system may include a first tenter dividing roll 11, a first tension roll 13, a skew adjusting and opposite side device 14, a traction device 15, a second tension roll 16, and a second tenter dividing roll 17, which are sequentially disposed in the traveling direction of the transfer temporary carrier 1. A first turning roll 12 may be disposed downstream of the first tenter slitting roll 11 such that the transfer temporary carrier 1 is deflected by approximately 90 ° by the first turning roll 12. A second turning roller 18 may be disposed downstream of the second tenter-dividing roller 17 so that the transfer temporary carrier 1 travels vertically upward after passing through the second turning roller 18. The transfer temporary carrier 1 is finally deflected by a deflection roller 19 out of the humidifying zone 20 or out of the moistening treatment device to the transfer device. A plurality of turning rollers may be provided in the traveling route of the transfer temporary carrier 1 so that the transfer temporary carrier 1 is appropriately deflected, so that the entire apparatus can be designed compactly. The guide system may have more or less guide rollers according to the actual need.

The knife beam 2 can be appropriately oriented relative to the transfer temporary support 1, for example can be arranged transversely to the direction of travel of the transfer temporary support 1 (for example offset by 45 °, in particular 30 °, in particular 20 ° or 15 ° or 10 ° or 5 ° relative to a perpendicular to the direction of travel of the transfer temporary support 1), in particular perpendicularly to the direction of travel of the transfer temporary support 1, in the wetting zone; and is spaced apart from the transfer temporary carrier 1. The knife beam 2 can be connected to an associated flow pump 5 in order to feed a predetermined amount of dampening solution to the knife beam 2. The knife beam 2 has a plurality of needle assemblies 3 arranged side by side for feeding out the wetting fluid. The number of needle cannula assemblies 3 may be, for example, 5-20, such as 8-16. The knife beam 2 is connected to a power supply 7, so that during operation of the moistening device an electrostatic field is generated between the knife beam 2 and the transfer carrier 1 and a corona discharge is generated at the needle tip of each needle assembly 3. The voltage of the power supply 7 may be 10-60kV, such as 20-50kV or 25-40 kV.

The wetting liquid may be a polar liquid. The moistening liquid can be deionized water, water-soluble liquid or water dispersion type liquid. The transfer temporary carrier can be transfer paper, a transfer film or a transfer blanket belt.

FIG. 4A is a schematic perspective view of a needle cannula assembly 3 according to one embodiment, and FIG. 4C is a cross-sectional view of the needle cannula assembly according to FIG. 4A. The syringe assembly 3 has a central, wetting fluid passage 21 formed by the syringe and an annular, compressed air passage 22 surrounding the syringe. The annular compressed-air channel 22 can be connected to a suitable air pump 4 (see fig. 1), which air pump 4 can generate a compressed-air flow. The pressure of the compressed air may be in the range of 0.1 to 1.0MPa, for example 0.2 to 0.8MPa or 0.3 to 0.6 MPa. The wetting fluid passage 21 or needle may extend beyond the compressed air passage 22, typically by less than or equal to 5mm, for example by about 3 mm. The diameter of the wetting fluid passage 21 or the inner diameter of the needle cannula may be 0.1-2.5mm, such as 0.3-2.0mm or 0.5-1.5 mm. The distance of the tip of the needle cannula from the transfer temporary carrier 1 may be 2-20cm, such as 3-18mm or 4-10mm, such as about 5mm or 6 mm.

The moisturizing liquid is output from the moisturizing liquid channel 21 as a jet of droplets charged by a voltage on the tip of the needle tube by a supply pressure of the moisturizing liquid supplied to the blade beam, an action of the compressed air flow in the compressed air channel 22, and an action of static electricity applied to the blade beam 2, the charged droplets are scattered by an interaction of a secondary air flow formed by the compressed air flow, an electrostatic field, and a droplet surface charge, forming a charged mist droplet group 6 which is moved toward and adsorbed onto the transfer temporary carrier 1 by the electrostatic field, so that the transfer temporary carrier 1 is moisturized.

Fig. 2 is a schematic view of a horizontal type moistening processing device for moistening processing of a transfer temporary carrier by field jet according to a second embodiment of the invention. The second embodiment differs from the first embodiment mainly in that the guide system is arranged such that the transfer temporary carriers 1 move in a horizontal direction through the dampening zone 20 and, as a result, the knife beams 2 arranged in the dampening zone 20 extend vertically, following one another in succession in the horizontal direction. In other respects, reference may be made to the description of the first embodiment with respect to fig. 1.

In some embodiments, which are not shown, at least one knife beam, in particular a plurality of knife beams, can be arranged on each side of the transfer blanket in the dampening zone of the dampening treatment device. For example, the same number of knife beams can be provided on both sides of the transfer temporary carrier, they can be arranged symmetrically, or they can be arranged offset from one another, for example, the knife beam on one side of the transfer temporary carrier can be offset by half the distance of two adjacent knife beams with respect to the knife beam on the other side of the transfer temporary carrier. The number and/or the layout and/or the orientation of the knife beams on one side of the transfer temporary carrier may be the same as or different from the number and/or the layout and/or the orientation of the knife beams on the other side of the transfer temporary carrier.

Fig. 3 is a view showing a layout of one of the blade beams 2 of the moistening processing apparatus of fig. 1 and 2 with respect to the transfer temporary carrier 1. The knife beam 2 is arranged perpendicular to the direction of travel of the transfer temporary carrier 1 and at a distance from the transfer temporary carrier 1. The width of the blade beam 2 may substantially correspond to the width of the transfer temporary carrier 1. The knife beam 2 illustratively has 10 needle assemblies that may be evenly distributed across the width of the knife beam 2.

Figure 4B is a schematic perspective view of a needle cannula assembly 3 according to another embodiment. The syringe assembly shown in fig. 4B differs from the syringe assembly shown in fig. 4A mainly in that the end face of the syringe assembly 2 is flush, i.e. the syringe does not protrude from the end face. In other words, the compressed air passage 22 and the wetting liquid passage 21 end in the same plane. The cross-sectional view shown in FIG. 4C may also be applied to the needle cannula assembly shown in FIG. 4B.

Fig. 5A to 5F are cross-sectional views of needle cannula assemblies according to other embodiments.

In the embodiment shown in FIG. 5A, the needle cannula assembly may have a circular cross-section. The syringe assembly may have a central wetting fluid passage 21 or syringe and eight air holes distributed uniformly around the syringe, which air holes respectively constitute the compressed air passage 22.

In the embodiment shown in FIG. 5B, the needle cannula assembly may have a hexagonal cross-section. The syringe assembly may have a central wetting fluid passage 21 or syringe and six air holes distributed uniformly around the syringe, which constitute the compressed air passage 22.

In the embodiment shown in FIG. 5C, the needle cannula assembly may have a square cross-section. The syringe assembly may have a central wetting fluid passage 21 or syringe and four air holes distributed uniformly around the syringe, which air holes respectively constitute the compressed air passage 22.

In the embodiment shown in FIG. 5D, the needle cannula assembly may have a circular cross-section. The needle cannula arrangement can have a central wetting fluid channel 21 or needle cannula and three linearly extending slits which are arranged uniformly distributed around wetting fluid channel 21 and which in each case form a compressed air channel 22. In cross section, the three rectangular slits may intersect in their extension to form a regular triangle.

In the embodiment shown in FIG. 5E, the needle cannula assembly may have a circular cross-section. The syringe assembly may have a central wetting fluid channel 21 or syringe and four arcuate slits arranged evenly distributed around wetting fluid channel 21 in cross-section, which slits each form a compressed air channel 22. In cross-section, the four slits may be in a circle concentric with the wetting liquid passage 21.

In the embodiment shown in FIG. 5F, the needle cannula assembly may have a square cross-section. The syringe assembly may have a central wetting fluid channel 21 or syringe and four linearly extending slits arranged uniformly distributed around wetting fluid channel 21 and forming compressed air channels 22. In cross section, the four slits may intersect in their extension to form a square.

Fig. 6 and 7 are schematic top and side views of the shuttles of two adjacent knife beams 2 for a moistening treatment device. All or a part of the knife beams 2 of the moistening treatment device may be reciprocatingly movable, and they may be provided with common or respective reciprocatingly movable means. As shown in fig. 6 and 7, two adjacent tool beams are provided with a common reciprocating device so that the two adjacent tool beams can reciprocally and transversely move in opposite directions to each other. The reciprocating means may comprise a drive motor 23, for example a variable frequency motor. The drive motor 23 may have a motor gear 24, the motor gear 24 may be engaged with an eccentric gear 25, and the oscillating motion of the eccentric gear 25 may be transmitted to the two adjacent tool beams 2 through a link mechanism so that the oscillating motion of the eccentric gear may be converted into respective reciprocating lateral movements of the two adjacent tool beams 2. The linkage may include a link 26 fixed to the eccentric gear 25, the link 26 may be connected to a swing arm 27, and the swing arm 27 may be connected to a knife beam connecting arm 28. The amount of lateral movement of two adjacent tool beams 2 can be chosen, for example, to be 50mm or less, for example 40mm or less. The frequency of the reciprocating transverse movements of two adjacent tool beams 2 can be chosen, for example, to be ≦ 80 times/min, for example ≦ 60 times/min.

The invention is further illustrated by the following non-limiting application examples, but it should be noted that these application examples should not be construed as limiting the invention.

Application example 1: relates to the application of a moistening treatment device shown in figure 1 in cold transfer printing of disperse dyes, wherein a transfer temporary carrier is as follows: the transfer printing film after printing the pattern by using the disperse dye has the following wetting liquid: deionized water, and the moistening parameters comprise: the voltage of the power supply was 20kV, the pressure of the compressed air flow was 0.4MPa, and the distance between the tip of the needle tube and the transfer temporary carrier was 5 cm. The transfer process may be, for example, the process described in example 1 of patent document CN 102776791A.

The effect is good after the film surface of the transfer temporary carrier is humidified, and the whole film surface is moist without flowing fluid. The film surface state is good after humidification, and the edge can not ooze after the transfer printing. And directly performing transfer printing after humidification. For comparative tests, dry films were used. The dry film may be a transfer film after a pattern is printed with a disperse dye, which may be subjected to a minute amount of dampening treatment by the apparatus or method of the present invention and become a dampening-treated transfer temporary carrier. The printed fabric is a polyester knitted fabric.

In the following table, "dry" denotes the above-described dry film, and "wet" denotes a transfer temporary carrier subjected to a wet process, which is achieved by the wet processing apparatus or the wet processing method of the present invention. As can be seen from the table below, the cloth surface color-obtaining effect of the wet film transfer is better than that of the dry film transfer at each vehicle speed, which indicates that the transfer rate of the wet film is higher than that of the dry film, and the transfer rate of the wet film is increased more as the vehicle speed is increased.

Application example 2: relates to the application of a moistening treatment device as shown in figure 2 in cold transfer printing of reactive dyes, wherein a transfer temporary carrier is as follows: the transfer paper after printing patterns by using reactive dyes has the following wetting liquid: 1.5% sodium bicarbonate + 98.5% deionized water, and the wetting parameters include: the voltage of the power supply was 20kV, the pressure of the compressed air flow was 0.4MPa, and the distance between the tip of the needle tube and the transfer temporary carrier was 5 cm. The transfer process may employ the process method described in example 1 of patent document CN 102797175B. The printed fabric is all-cotton tribute satin.

The effect is good after the film surface of the transfer temporary carrier is humidified, and the whole film surface is moist without liquid flowing. The film surface state is good after humidification, and the edge can not ooze after the transfer printing. And directly performing transfer printing after humidification. For comparative tests, dry films were used. The dry film may be transfer paper after printing a pattern with reactive dyes, which may be subjected to a minute amount of dampening treatment by the apparatus or method of the present invention and become a dampening-treated transfer temporary support.

In the above table, "dry" means the above-mentioned dry film, and "wet" means a transfer temporary carrier subjected to a wet-giving process achieved by the apparatus or method of the present invention. From the above table, it can be seen that the cloth surface color obtaining effect of the wet film transfer is better than that of the dry film transfer at each vehicle speed, which indicates that the transfer rate of the wet film is higher than that of the dry film, and the transfer rate is improved most at the vehicle speed of 20 m/min.

It is noted that the terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "comprises" and "comprising," and other similar terms, when used in this specification, specify the presence of stated operations, elements, and/or components, but do not preclude the presence or addition of one or more other operations, elements, components, and/or groups thereof. The term "and/or" as used herein includes all arbitrary combinations of one or more of the associated listed items. In the description of the drawings, like reference numerals refer to like elements throughout.

The thickness of elements in the figures may be exaggerated for clarity. It will be further understood that if an element is referred to as being "on," "coupled to" or "connected to" another element, it can be directly on, coupled or connected to the other element or intervening elements may be present. Conversely, if the expressions "directly on … …", "directly coupled with … …", and "directly connected with … …" are used herein, then there are no intervening elements present. Other words used to describe the relationship between elements should be similarly interpreted, such as "between … …" and "directly between … …" and the like.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element could be termed a second element without departing from the teachings of the present inventive concept.

Finally, it is pointed out that the above-described embodiments are only intended to be understood as an example of the invention and do not limit the scope of protection of the invention. It will be apparent to those skilled in the art that modifications may be made in the foregoing embodiments without departing from the scope of the invention.