Liquid adding device, dry towel production device including the same, and dry towel production method

Abstract

The present invention discloses a liquid adding device. The cloth substrate can adsorb the liquid material through the liquid adding device. The liquid adding device includes a liquid storage container for accommodating the liquid material. The cloth substrate passes through the liquid storage container and adsorbs the liquid material. It further includes a liquid extrusion part for extruding the liquid material on the cloth substrate after the cloth substrate adsorbs the liquid material. The liquid adding device of the present invention further includes an antifoaming part capable of promptly bursting the foam on the surface of the liquid material during the processing. The present invention also discloses a dry towel production device which is arranged on the hydroentangling production line of non-woven fabric and includes the aforementioned liquid adding device. The liquid adding device is respectively connected to a hydroentangling device and a drying device. By using the dry towel production device of the present invention, the processing cost of the dry towel can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dry towel processing, and particularly relates to a liquid adding device, a dry towel production device including the same, and a production method of a dry towel.

[0002] Background Art

[0003] Wet wipes are widely loved by consumers due to their convenience of use. There are many types of wet wipes on the market currently, and their functions are also diverse, such as cleaning, moisturizing, sunscreen, etc. However, because the water content in wet wipes is relatively high, it is easy to breed microorganisms and has the risk of mildew. In order to ensure the shelf life of functional wet wipes, more preservatives and bactericides will be added to functional wet wipes, which not only wastes costs but also easily causes skin allergies. In addition, the packaging and transportation costs of wet wipes are also relatively high. Therefore, functional dry towels have emerged as the times require. Most of the existing functional dry towels are prepared by spraying functional liquid on non-woven fabrics to obtain wet wipes and then drying them. The substrates of wet wipes are mostly spunlace non-woven fabrics. The current general processing links of spunlace non-woven fabrics include carding, web forming, hydroentangling, drying and other links. Therefore, after obtaining the non-woven fabric, adding liquid and drying and other links are carried out, resulting in a relatively high production and processing cost of dry towels.

[0004] Due to the relatively high processing cost, few domestic manufacturers currently conduct research on the processing technology of dry towels, resulting in the immature production technology of dry towels in China, few types of dry towels, and most of them rely on imports, resulting in very high prices of functional dry towels in the current domestic market.

[0005] In addition, for dry towels that need to achieve a cleaning effect, most need to add raw materials that are easy to produce foam, such as surfactants, to the liquid. Therefore, a large amount of foam will be generated when the cleaning lotion is combined with the non-woven fabric by either spraying or rolling. If the foam is not defoamed, cleared or broken in time, the foam will not only spread to the ground of the production workshop, polluting the environment, but also affect the stability of the functional dry towel. For example, the effective substance content will affect the foam feeling during use. Summary of the Invention

[0006] To overcome the above disadvantages, the purpose of the present invention is to provide a liquid adding device, a dry towel production device including the same, and a production method of a dry towel. By using the solution of the present invention, the processing cost of dry towels can be reduced by 20 - 50%, and the foam in the dry towel processing process can be eliminated in time.

[0007]

[0008] ​​One of the objectives of the present invention is to provide a liquid adding device. The cloth substrate can adsorb the liquid material through the liquid adding device. The liquid adding device includes a liquid storage container for containing the liquid material. The cloth substrate passes through the liquid storage container and adsorbs the liquid material. It further includes a liquid extrusion part, which is used to extrude the liquid material on the cloth substrate after the cloth substrate adsorbs the liquid material. Therefore, the cloth substrate can fully adsorb the liquid material after passing through the liquid storage container. By setting the liquid extrusion part, the excess liquid material can flow back in time, avoiding waste of the liquid material and facilitating the subsequent processing operations of the cloth substrate adsorbed with the liquid material.

[0009] Further, the liquid extrusion part includes a first pair of rollers. The cloth substrate passes through the first pair of rollers after adsorbing the liquid material. A liquid return plate is arranged below the first pair of rollers, and the liquid return plate is connected to the liquid storage container. Therefore, the extruded liquid material can quickly flow back into the liquid storage container.

[0010] Further, it further includes a defoaming part. The defoaming part is connected to the side wall of the liquid storage container. The defoaming part includes a return pipe that is inclined gradually away from the outer side wall of the liquid storage container from bottom to top, and a return cavity connected to the return pipe. The return pipe is connected to the liquid storage container. At least one layer of porous screen is arranged in the return cavity. A number of puncturing needles are arranged on both sides of the screen. It further includes a drainage pump connected to the return cavity, and the drainage pump is connected to the liquid storage container. Therefore, the foam formed on the liquid surface of the liquid storage container can enter the return cavity through the return pipe and be punctured when passing through the screen and turn back into liquid state. Thus, it avoids the foam escaping from the liquid storage barrel, thereby polluting the processing environment and also preventing waste of the liquid material.

[0011] Another objective of the present invention is to provide a dry towel production device, which includes the liquid adding device described in one of the objectives of the present invention.

[0012] Further, the liquid adding device is arranged on the hydroentangling production line of non-woven fabric. The liquid adding device is respectively connected to a hydroentangling device and a drying device. Therefore, when using the dry towel production device of the present invention for dry towel processing, the feeding operation is carried out after the hydroentangling process, and the drying operation is carried out after the feeding is completed. Thus, the drying link in the normal dry towel processing link can be overlapped with the drying link in the normal processing link of hydroentangled non-woven fabric. Therefore, the cost of the dry towel processing process can be effectively reduced.

[0013] Even further, a traction roller is arranged in the liquid storage container. At least a part of the traction roller is located below the liquid level of the liquid material in the liquid storage container. The non-woven fabric processed by the hydroentangling device is sequentially connected to the traction roller and the liquid extrusion part.

[0014] Further, it further includes a water squeezing part respectively connected to the hydroentangling device and the liquid adding device. The water squeezing part includes a second pair of rollers and a recovered liquid tank. The second pair of rollers is arranged above the recovered liquid tank. The non-woven fabric obtained after hydroentangling is connected to the traction roller after passing through the second pair of rollers.

[0015] The third object of the present invention is to provide a production method of dry towels. Using the production method of hydroentangled non-woven fabrics, it successively includes carding, web forming, hydroentangling, and drying processes. Between the hydroentangling and drying processes, it also successively includes a liquid adding process and a liquid squeezing process. When adding liquid, the non-woven fabric is passed through a liquid storage container pre-filled with liquid and adsorbs the liquid. Therefore, the drying process in the normal dry towel processing link can be overlapped with the drying process in the normal processing link of hydroentangled non-woven fabrics. A liquid adding link is added to the normal hydroentangling processing technology, and after the liquid adding is completed, drying treatment is carried out using the drying step in the normal production process of hydroentangled non-woven fabrics. Therefore, the processing cost of dry towels is effectively reduced.

[0016] Further, after the hydroentangling link, it further includes a water squeezing process. The water squeezing process is located before the liquid adding process. After the drying process, it further includes a spraying process. In the spraying process, volatile materials are sprayed on the non-woven fabric.

[0017] Further, the liquid adding process further includes a defoaming process. The defoaming process can recover and defoam the foamy liquid in the liquid storage container and obtain the liquid state liquid again.

[0018] The present invention has the following beneficial effects:

[0019] The present invention reduces the production and processing cost of dry towels. This technology fills the gap in the domestic market in the field of dry towel processing technology. The present invention produces functional dry towels by adding an immersion liquid storage barrel in the hydroentangling process of the non-woven fabric production process. Compared with the functional dry towels prepared by the post-treatment of hydroentangled non-woven fabrics, the production cost and energy consumption can be greatly saved, about 20 - 50% reduction. The present invention also provides a set of dry towel processing devices. Using this device, dry towels can be processed efficiently and quickly. Moreover, the dry towel processing device of the present invention is provided with a defoaming structure. Therefore, during the processing of cleaning dry towels, foam will not flow out of the storage container, effectively avoiding the problem of polluting the production environment. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0021] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in

[0022] Figure 3Schematic structural diagram of the sieve mesh of the present invention and the puncturing needles thereon;

[0023] Figure 4 Schematic structural diagram of the second embodiment of the present invention.

[0024] In the figure:

[0025] 1 - liquid storage barrel, 2 - traction roller, 31 - first pair of rollers, 32 - return plate, 41 - return pipe, 42 - return cavity, 43 - sieve mesh, 431 - puncturing needle, 44 - liquid discharge pump, 51 - reed type liquid level sensor, 52 - alarm, 61 - non-woven fabric inlet, 62 - non-woven fabric outlet, 7 - connecting frame, 71 - bolt hole, 8 - mounting plate, 81 - mounting hole, 91 - hydroentangling device, 92 - drying device, 101 - second pair of rollers, 102 - recovered liquid tank, 11 - spraying chamber, 12 - cloth receiving roller. Specific embodiments

[0026] The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0027] Embodiment 1:

[0028] Refer to Figure 1 As shown, the liquid adding device in this embodiment is used to add liquid to the non-woven fabric so that it can fully adsorb the liquid material. The liquid adding device listed in this embodiment is used for the preparation of dry towels. Obviously, the use of the liquid adding device of the present invention is not limited to this, and the cloth-based substrates applicable to the liquid adding device of the present invention are not limited to non-woven fabrics, and it can also be cotton cloth, linen cloth, silk, blended fabrics, etc. Using this liquid adding device, the non-woven fabric can adsorb the liquid material. It includes a liquid storage barrel 1 for accommodating the liquid material, and a traction roller 2 is arranged in the liquid storage barrel 1. The central axis of the traction roller 2 is arranged in a direction parallel to the horizontal plane. Preferably, the traction roller 2 is located below the liquid level of the liquid material in the liquid storage barrel 1. When in use, the non-woven fabric rolls around from below the traction roller 2. Therefore, the non-woven fabric can be taken out from the liquid storage barrel 1 under the drive of the traction roller 2 and come into full contact with the liquid material in the liquid storage barrel 1 and adsorb the liquid material.

[0029] The liquid adding device of the present invention further includes a liquid material extrusion part. The liquid material extrusion part includes a first pair of rollers 31. After passing through the traction rollers 2, the non-woven fabric is connected to the first pair of rollers 31 and passes through the first pair of rollers 31. Therefore, after adsorbing the liquid material, the non-woven fabric passes through the middle of the two rollers of the first pair of rollers 31, and thus the liquid material adsorbed on the non-woven fabric can be extruded. A liquid material return plate 32 is arranged below the first pair of rollers 31. The lower edge of the liquid material return plate 32 is connected to the upper edge of the liquid storage barrel 1, and the liquid material return plate 32 is inclined away from the liquid storage barrel 1 from bottom to top. Therefore, the excess liquid material on the non-woven fabric is extruded under the action of the first pair of rollers 31 and flows back into the liquid storage barrel 1 through the liquid material return plate 32. By using the liquid adding device of the present invention, it can ensure that the non-woven fabric quickly adsorbs the liquid material and avoid waste of the liquid material. After being extruded by the first pair of rollers 31, the residual liquid material amount on the non-woven fabric is effectively reduced, which is convenient for subsequent drying and other operations.

[0030] The liquid adding device of the present invention further includes an anti-foaming part. Refer to Figure 2 As shown in the figure, the anti-foaming part includes a return pipe 41 which is inclined gradually away from the outer wall of the liquid storage barrel 1 from bottom to top, and a return cavity 42 connected to the return pipe 41. The return pipe 41 is arranged on the upper side wall of the liquid storage barrel 1 and is communicated with the liquid storage barrel 1. At least one layer of porous screen 43 and a liquid discharge pump 44 connected to the return cavity 42 are arranged in the return cavity 42. On both sides of the screen 43, there are a number of puncturing needles 431 with the spiked parts extending in the direction away from the main body of the screen 43 (as Figure 3 shown in the figure), and the liquid discharge pump 44 is connected to the liquid storage barrel 1. When the liquid material in the liquid storage barrel 1 contains a surfactant or other raw materials that are easy to form foam, a large amount of foam will be formed on the liquid surface layer of the liquid storage barrel 1, and in severe cases, the foam will even escape from the liquid storage barrel 1, affecting the processing environment. By setting the anti-foaming part, the foam generated in the liquid storage barrel 1 can be discharged in time. After the foam is punctured by the puncturing needles 431 of the screen 43, it turns back into a liquid state and is re-transported back into the liquid storage barrel 1 under the action of the liquid discharge pump 44.

[0031] As a preferred embodiment of the present invention, a reed type liquid level sensor 51 is further arranged in the liquid storage barrel 1, and an alarm 52 and a controller are also included. Both the reed type liquid level sensor 5 and the alarm 52 are connected to the controller. When the liquid level sensor 51 senses that the liquid level height in the liquid storage barrel is lower than the lowest end of the traction rollers 2, it sends a signal to the controller, and the alarm 52 starts to alarm to prompt the operator to add the liquid material in time.

[0032] As another preferred embodiment of the present invention, a cover body 6 is further provided at the opening of the liquid storage barrel 1. A non-woven fabric inlet 61 and a non-woven fabric outlet 62 are provided on the cover body 6. The area of the cover body 6 where the non-woven fabric inlet 61 and the non-woven fabric outlet 62 are provided inclines towards the bottom of the liquid storage barrel 1. Therefore, when a small amount of liquid is carried out from the liquid storage barrel 1, it can quickly flow back into the liquid storage barrel 1 again from the non-woven fabric inlet 61 and the non-woven fabric outlet 62.

[0033] The liquid adding device of the present invention further includes a connecting frame 7 connected to the first pair of rollers 31. A hinge shaft is provided in the middle of the connecting frame 7 and is connected to the mounting plate 8. A bolt hole 71 is provided at the end of the connecting frame 7, and at least one set of mounting holes 81 corresponding to the bolt hole 71 is provided on the mounting plate 8. Therefore, the connecting frame 7 can rotate relative to the mounting plate 8 within a certain angle, so as to realize fine adjustment of the position of the first pair of rollers 31, and thus can realize the adjustment of the tension of the non-woven fabric.

[0034] Embodiment Two:

[0035] As Figure 4 shown, the dry towel production device of this embodiment is used in combination with a conventional spunlace non-woven fabric processing production line and includes the liquid adding device of Embodiment One. The liquid adding device is arranged on the spunlace production line of the non-woven fabric, and the liquid adding device is respectively connected to the spunlace device 91 and the drying device 92. A water squeezing part is further arranged between the liquid adding device and the spunlace device 91. The water squeezing part includes a second pair of rollers 101 and a recovered liquid tank 102. The second pair of rollers 101 is arranged above the recovered liquid tank 102. The non-woven fabric obtained after spunlace processing passes through the second pair of rollers 101 and then passes through the traction roller 2 and is output at the first pair of rollers 31. Therefore, the water in the non-woven fabric after the spunlace process can be squeezed out after passing through the water squeezing part. The dry towel production device of the present invention further includes a spray chamber 11 connected to the drying device 92. The non-woven fabric after drying treatment passes through the spray chamber 11 for spraying volatile materials such as essence. The non-woven fabric after spraying is wound up by a cloth receiving roller 12, and then subsequent processes such as cutting and packaging are completed.

[0036] Embodiment Three: Preparation of cleansing dry towels:

[0037] First, prepare the liquid. The formula of the liquid for the cleansing dry towel is shown in Table 1:

[0038]

[0039] The liquid for the cleansing dry towel is prepared according to the following method:

[0040] 1. Add disodium EDTA, glycerin, ethylhexylglycerin, methylparaben, acrylate / C10-30 alkyl acrylate crosslinked polymer to an appropriate amount of deionized water, heat to 75-90 °C with stirring, and then perform high-speed homogenization to obtain A;

[0041] 2. Weigh vaseline and heat it in a water bath at 80 °C until it melts completely to obtain B;

[0042] 3. Weigh cocamidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroyl glutamate, lauryl glucoside, and decyl glucoside, mix them evenly, and then heat to 75-85 °C to obtain C;

[0043] 4. Pour B into A and perform high-speed homogenization for 5-10 min to obtain D

[0044] 5. Add C to D, perform high homogenization for 5-10 min, and then keep it warm at 75-85 °C with stirring for 15-30 min

[0045] 6. Cool down to below 45 °C and add phenoxyethanol to obtain the wet wipe lotion.

[0046] After preparing the above cleansing lotion, pour it into the storage tank 1 for standby.

[0047] On the production line of spunlace non-woven fabric, after carding, web forming, and hydroentangling in sequence, squeeze the water in the spunlace non-woven fabric, then pass the non-woven fabric through the storage tank 1, and let it fully adsorb the wet wipe lotion in the storage tank 1. Subsequently, squeeze the excess liquid in the non-woven fabric and reflow it back to the storage tank 1. Then, perform drying treatment on the non-woven fabric. It is also possible to perform spraying treatment on the dried non-woven fabric with volatile raw materials such as fragrance, and then perform winding and slitting, packaging, etc. on the non-woven fabric.

[0048] The cleansing dry wipe of this embodiment can be completed by using the dry wipe production device in Embodiment 2. After squeezing the water in the non-woven fabric by the second pair of rollers 101, let the non-woven fabric pass through the traction roller 2 and make full contact and adsorption with the wet wipe liquid in the storage tank 1. Subsequently, under the action of the first pair of rollers 31, squeeze the liquid in the non-woven fabric. Preferably, the liquid content in the hydroentangled non-woven fabric after extrusion should be in the range of 150%-250%.

[0049] Example 4: Preparation of cleansing dry hair wipes:

[0050] First, prepare the liquid material. The formula of the liquid material for cleansing dry hair wipes is shown in Table 2:

[0051]

[0052] The liquid material for cleansing dry hair wipes is prepared according to the following method:

[0053] 1. Respectively add methylparaben, glycerin, ethylhexylglycerin, disodium EDTA, sodium lauryl polyether sulfate, sodium cocoyl methyl taurate, cocamidopropyl betaine, sodium lauroamphoacetate, sodium cocoyl polyether sulfate, coconut oil amide MEA, PEG-80 sorbitan laurate into an appropriate amount of deionized water, heat to 75 - 85 °C with continuous stirring, and keep warm for 15 - 30 min.

[0054] 2. Stir and cool down. When the temperature drops to 40 - 45 °C, respectively add polyquaternium-10, dimethicone copolyol, laureth-23, laureth-3, hydrolyzed silk protein and phenoxyethanol, and continue to stir for 10 - 20 min.

[0055] 3. Prepare a solution of citric acid, add it to the above emulsion, and continue to stir for 10 min to ensure that the pH value is 5.5 - 6.5, thus obtaining the liquid material for the hair drying towel.

[0056] Pour the liquid material for the hair drying towel prepared by the above method into the storage bucket 1 for standby. The preparation of the hair drying towel can be completed according to the process of Example 3.

[0057] In the present invention, by integrating the liquid adding step into the processing technology of the spunlace non-woven fabric, and using the drying process in the normal processing of the spunlace non-woven fabric to dry the non-woven fabric that has adsorbed the liquid material. With the dry towel production method of the present invention, the energy consumption of the entire processing process is greatly reduced, and the cost can be reduced by about 30 - 40%.

[0058] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A dry towel production device, characterized in that, It includes a liquid adding device which is arranged on the hydroentangling production line of non-woven fabrics. The liquid adding device is respectively connected to a hydroentangling device and a drying device. The fabric substrate can adsorb the liquid material through the liquid adding device. The liquid adding device includes a liquid storage container for containing the liquid material. The fabric substrate passes through the liquid storage container and adsorbs the liquid material. It also includes a liquid squeezing part which is used to squeeze the liquid material on the fabric substrate after the fabric substrate adsorbs the liquid material. The liquid adding device also includes a defoaming part which is connected to the side wall of the liquid storage container. The defoaming part includes a reflux pipe which is inclined gradually from bottom to top away from the outer side wall of the liquid storage container, and a reflux cavity connected to the reflux pipe. The reflux pipe is connected to the liquid storage container. At least one layer of porous screen is arranged in the reflux cavity. A number of puncturing needles are arranged on both sides of the screen. It also includes a liquid discharging pump connected to the reflux cavity, and the liquid discharging pump is connected to the liquid storage container. The liquid squeezing part includes a first pair of rollers. The fabric substrate passes through the first pair of rollers after adsorbing the liquid material. A liquid reflux plate is arranged below the first pair of rollers, and the liquid reflux plate is connected to the liquid storage container.

2. The dry towel production device according to claim 1, characterized in that, A traction roller is arranged in the liquid storage container, and at least a part of the traction roller is located below the liquid level of the liquid material in the liquid storage container. The non-woven fabric processed by the hydroentangling device is successively connected to the traction roller and the liquid squeezing part.

3. The dry towel production device according to claim 2, characterized in that, It also includes a water squeezing part which is respectively connected to the hydroentangling device and the liquid adding device. The water squeezing part includes a second pair of rollers and a liquid recovery tank. The second pair of rollers is arranged above the liquid recovery tank. The non-woven fabric obtained after hydroentangling is connected to the traction roller after passing through the second pair of rollers.

4. A production method of a dry towel, using the production method of spunlace non-woven fabric, successively including carding, web forming, hydroentangling, and drying processes, characterized in that, Between the hydroentangling process and the drying process, there are also successively a liquid adding process and a liquid squeezing process. When adding liquid, the non-woven fabric is passed through the liquid storage container pre-filled with the liquid material and adsorbs the liquid material. In the liquid adding process, there is also a defoaming process. The defoaming process can recover and defoam the foamy liquid material in the liquid storage container to obtain the liquid material again. The defoaming process is realized through the defoaming part. The defoaming part is connected to the side wall of the liquid storage container. The defoaming part includes a reflux pipe which is inclined gradually from bottom to top away from the outer side wall of the liquid storage container, and a reflux cavity connected to the reflux pipe. The reflux pipe is connected to the liquid storage container. At least one layer of porous screen is arranged in the reflux cavity. A number of puncturing needles are arranged on both sides of the screen. It also includes a liquid discharging pump connected to the reflux cavity, and the liquid discharging pump is connected to the liquid storage container.

5. The production method of a dry towel according to claim 4, characterized in that, After the hydroentangling link, there is also a water squeezing process which is located before the liquid adding process. After the drying process, there is also a spraying process. In the spraying process, the volatile material is sprayed on the non-woven fabric.

Images