Wet tissue liquid spraying equipment and method for wet tissue production

Abstract

The invention discloses a wet tissue liquid spraying device and method for wet tissue production. The wet tissue liquid spraying device comprises a bottom plate, a control system used for achieving full-automatic wet tissue liquid spraying through a controller and a spraying mechanism installed at the top of the bottom plate and used for spraying wet tissue liquid to a wet tissue base material. The wet tissue base material comprises an oil absorption layer and a water absorption layer arranged at the bottom of the oil absorption layer; a plurality of feeding devices are mounted at the top of the bottom plate and positioned on the side surface of the wet tissue base material; a specific spraying process is adopted, a small amount of sprayed water absorption layer wet tissue liquid forms a liquid conduction path, a direct permeation path is provided for oil absorption layer wet tissue liquid, oil absorption layer liquid is prevented from being excessively accumulated on the surface, the wetting effect is improved, on the other hand, a tiny liquid bridge can be formed between the water absorption layer and oil absorption layer fibers to be connected with an inner oil absorption layer, and the wetting effect is improved. The permeation rate of the oil absorption layer is increased, a local over-wet area is prevented from being formed on the surface of the oil absorption layer, and the consistency of wettability is ensured, so that the degreasing effect of the wet tissue base material is improved.

Description

Technical Field

[0001] The invention relates to the field of liquid phase treatment of textile materials, in particular to spraying or jetting, and specifically to a wet wipes liquid spraying device and method for wet wipes production. Background Art

[0002] In daily life, degreasing wipes are a convenient and efficient cleaning tool, widely used in kitchens, industrial production lines, car repairs and other occasions to quickly remove impurities such as grease and stains. As consumers' demand for efficient and convenient cleaning solutions continues to grow, degreasing wipes have become widely popular due to their instant availability, no need for additional washing steps and portability. These wipes are usually made of multiple layers of material.

[0003] Existing degreasing wipes spraying equipment usually adopts a single spraying method, that is, spraying the wet wipes liquid directly onto one layer of the wet wipes, and then spraying another layer. Although this method is simple and easy to implement, it is difficult to ensure the uniform distribution of the wet wipes liquid in the wet wipes. The water absorption of materials between different layers is often quite different. If a large amount of spraying is performed directly, the wet wipes liquid may stay on the surface of the material for too long. Due to the accumulation of liquid on the surface, local over-wet areas may also be formed, resulting in inconsistent overall wetness of the wet wipes, further reducing the degreasing performance.

[0004] Therefore, it is necessary to improve the deficiencies in the prior art to solve the above problems. Summary of the invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a wet wipes liquid spraying device and method for wet wipes production.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a wet wipes liquid spraying device for wet wipes production, comprising: a bottom plate, a control system for realizing full-automatic wet wipes liquid spraying using a controller, and a spraying mechanism installed on the top of the bottom plate for spraying wet wipes liquid onto a wet wipes substrate; The wet wipes substrate comprises: an oil absorption layer and a water absorption layer arranged at the bottom of the oil absorption layer; the top of the bottom plate is located on the side of the wet wipes substrate and is equipped with a plurality of feeding devices for feeding the wet wipes substrate; The spray mechanism comprises: three groups of spray heads arranged on the top of the bottom plate, and a plurality of mounting plates arranged on one side of each group of the spray heads; a support plate is fixed to the side of the plurality of the spray heads in each group, and one side of the support plate is mounted on one side of the plurality of the mounting plates; the three groups of the spray heads are distributed in the following manner: the spray ends of the spray heads of the group located in the middle face the top of the oil absorption layer, and the spray ends of the two groups of the spray heads located on both sides face the bottom of the water absorption layer; An oil absorption liquid tank for carrying the oil absorption layer wet wipes liquid and a water absorption liquid tank for carrying the water absorption layer wet wipes liquid are respectively arranged on both sides of the bottom plate, and the sides of the oil absorption liquid tank and the water absorption liquid tank are both provided with an infusion component for conveying the wet wipes liquid to the liquid inlet end of the spray head.

[0007] In a preferred embodiment of the present invention, the plurality of spray heads in each group are evenly distributed in a linear array along the width direction of the wet wipe substrate; the bottom of the mounting plate is fixed to the top of the base plate, the spray mechanism is located between the plurality of feeding devices, and the control system is electrically connected to the feeding device and the spray head, respectively.

[0008] In a preferred embodiment of the present invention, the material of the oil absorption layer is one of polyester or nylon; the material of the water absorption layer is one of viscose fiber or cotton fiber.

[0009] In a preferred embodiment of the present invention, the infusion assembly includes: a plurality of water pumps arranged on one side of the base plate, and an infusion tube installed at the output end of the water pump; the side surface of the infusion tube close to one end is fixed to the liquid inlet end of the plurality of spray heads, and the water pump is electrically connected to the control system.

[0010] In a preferred embodiment of the present invention, a group of water pumps are arranged on the side of the oil absorption liquid tank, and the input end is fixed to the side of the oil absorption liquid tank, and the infusion tube at the output end is connected to a group of spray heads located in the middle; two groups of water pumps are arranged on the side of the water absorption liquid tank, and the input ends are fixed to the side of the water absorption liquid tank, and the infusion tube at the output end is respectively connected to the two groups of spray heads located on both sides.

[0011] In a preferred embodiment of the present invention, a lifting assembly is provided on the side of the mounting plate, and the lifting assembly includes: a cylinder and a linear guide fixed on one side of the mounting plate, and a movable plate installed on one side of the support plate; the output end of the cylinder is fixed to one side of the movable plate, the side of the movable plate is slidably connected to the side of the linear guide, and the cylinder is electrically connected to the control system.

[0012] In a preferred embodiment of the present invention, a limiting block is fixed on one side of the mounting plate, a limiting rod is fixed on one side of the limiting block, and one end of the limiting rod faces one side of the movable plate.

[0013] The present invention provides a spraying method of a wet wipes liquid spraying device for wet wipes production, comprising the following steps: S1. Place the side of the wet wipe substrate to be sprayed on a plurality of feeding devices, and make the oil absorption layer of the wet wipe substrate face the spraying end of a group of spray heads located in the middle, and the water absorption layer face the spraying ends of the two groups of spray heads located on both sides; S2. Controlling a plurality of feeding devices to feed the wet wipes substrate through a control system, and controlling the infusion assembly to deliver the oil-absorbing layer wet wipes liquid in the oil-absorbing liquid tank to a group of spray heads located in the middle, and to deliver the water-absorbing layer wet wipes liquid in the water-absorbing liquid tank to two groups of spray heads located on both sides; S3. Through the control system, according to the forward direction of the wet wipes substrate, control a group of spray heads on one side to spray the water absorbing layer wet wipes liquid for the first time, a group of spray heads in the middle to spray the oil absorbing layer wet wipes liquid, and a group of spray heads on the other side to spray the water absorbing layer wet wipes liquid for the second time, thereby realizing fully automatic and continuous wet wipes liquid spraying.

[0014] In a preferred embodiment of the present invention, in the step S3, the liquid flow rate of the first spraying of the water-absorbing layer wet wipes liquid is 0.4-0.8 L / min, and the liquid pressure is 6-10 MPa; the liquid flow rate of the spraying of the oil-absorbing layer wet wipes liquid is 1.5-2 L / min, and the liquid pressure is 6-10 MPa; the liquid flow rate of the second spraying of the water-absorbing layer wet wipes liquid is 1-1.5 L / min, and the liquid pressure is 6-10 MPa.

[0015] In a preferred embodiment of the present invention, the water-absorbing layer wet wipes liquid contains a surfactant with a concentration of 3-8 wt% and a penetration aid with a concentration of 2-5 wt%; the surfactant is one of sodium alkylbenzene sulfonate or fatty alcohol polyoxyethylene ether, and the penetration aid is one of glycerol or propylene glycol.

[0016] The present invention solves the defects existing in the background technology and has the following beneficial effects: The present invention provides a wet wipes liquid spraying device and method for wet wipes production. The device and method adopt a spraying process of first spraying a small amount of water absorbing layer wet wipes liquid onto a water absorbing layer, then spraying the oil absorbing layer wet wipes liquid onto an oil absorbing layer, and finally spraying the water absorbing layer wet wipes liquid onto the water absorbing layer. On the one hand, the water absorbing layer wet wipes liquid sprayed in small amounts has formed a liquid conduction path, providing a direct penetration path for the oil absorbing layer wet wipes liquid, avoiding excessive accumulation of the oil absorbing layer liquid on the surface, and improving the wetting effect. On the other hand, a tiny liquid bridge can be formed between the water absorbing layer and the oil absorbing layer fibers to connect the inner oil absorbing layer, thereby increasing the penetration rate of the oil absorbing layer, avoiding the formation of a local over-wet area on the surface of the oil absorbing layer, ensuring the consistency of wetness, and thus improving the degreasing effect of the wet wipes substrate.

[0017] In the present invention, by adding a suitable amount of surfactant and penetration aid to the water absorption layer liquid, the surfactant can reduce the surface tension of the liquid and form a microemulsion structure, so that the liquid can spread more easily and penetrate into the material, and can help the oil absorption layer wet wipes liquid to penetrate faster, thereby enhancing the wettability of the oil absorption layer material and promoting the uniform distribution of the liquid. The penetration aid can form a bridge between the liquid and the material, and can help the oil absorption layer liquid to penetrate faster, which can not only maintain the softness and water absorption of the water absorption layer, but also serve as a moisturizing component to prevent the hand skin from drying, thereby further improving the degreasing efficiency.

[0018] In the present invention, by using polyester or nylon, a material with strong oil absorption performance, the oil can be quickly absorbed and locked to prevent it from penetrating into the water absorption layer. By using viscose fiber or cotton fiber, a material with strong water absorption performance and softness, the water absorption layer can not only absorb excess water but also provide a comfortable touch and reduce the contact between hands and oil stains. Therefore, the combination of the materials of the oil absorption layer and the water absorption layer can give full play to the oil absorption and water absorption properties of the wet wipes.

[0019] In the present invention, a lifting assembly is arranged on the side of the mounting plate, and the control system controls the extension and retraction of the cylinder. With the cooperation of the cylinder, the linear guide rail and the movable plate, the distance between the spray head and the wet wipe substrate can be adjusted according to the thickness of the wet wipe substrate and the spraying requirements, thereby ensuring that the wet wipe liquid can be sprayed evenly and accurately on the surface of the wet wipe substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a three-dimensional structure of a preferred embodiment of the present invention and a partial enlarged view thereof; Figure 2 It is a three-dimensional structural diagram of a spraying mechanism of a preferred embodiment of the present invention; Figure 3 is an overall top view of the structure of a preferred embodiment of the present invention; In the figure: 1. bottom plate; 2. spraying mechanism; 21. spraying head; 22. mounting plate; 23. support plate; 3. wet wipes substrate; 31. oil absorption layer; 32. water absorption layer; 4. feeding device; 5. oil absorption tank; 6. water absorption tank; 7. water pump; 71. infusion tube; 8. cylinder; 81. linear guide; 82. moving plate; 9. limit block; 91. limit rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0025] It should be noted that the wet wipes liquid spraying equipment of the present invention is preferably suitable for the wet wipes liquid spraying production of two-layer degreasing wet wipes, and the two-layer degreasing wet wipes have one layer as an oil absorption surface and the other layer as a water absorption surface. The water absorption surface is used for contacting with hands, and the oil absorption surface is in contact with oil stains, thereby avoiding the defect of traditional degreasing wet wipes that cause one or both sides to be transparent and cause oil stains to contact hands. The raw materials, equipment, reagents, etc. used in the present invention can be purchased on the market or obtained by the preparation method of existing technology.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a wet wipes liquid spraying device for wet wipes production comprises: a bottom plate 1, a control system for realizing fully automatic wet wipes liquid spraying by using a controller, and a spraying mechanism 2 installed on the top of the bottom plate 1 for spraying wet wipes liquid onto a wet wipes substrate 3; the wet wipes substrate 3 comprises: an oil absorption layer 31 and a water absorption layer 32 arranged at the bottom of the oil absorption layer 31; a plurality of feeding devices 4 for feeding the wet wipes substrate 3 are installed on the top of the bottom plate 1 and located on the side of the wet wipes substrate 3; the spraying mechanism 2 comprises: three groups of spray heads 21 arranged on the top of the bottom plate 1, and a plurality of mounting plates 22 arranged on one side of each group of spray heads 21; A support plate 23 is fixed to the side of the several spray heads 21, and one side of the support plate 23 is installed on one side of the several mounting plates 22; the distribution of the three groups of spray heads 21 is as follows: the spraying ends of the spray heads 21 of the group in the middle are facing the top of the oil absorption layer 31, and the spraying ends of the two groups of spray heads 21 on both sides are facing the bottom of the water absorption layer 32; the two sides of the bottom plate 1 are respectively provided with an oil absorption liquid tank 5 for carrying the wet wipes liquid of the oil absorption layer 31 and a water absorption liquid tank 6 for carrying the wet wipes liquid of the water absorption layer 32, and the sides of the oil absorption liquid tank 5 and the water absorption liquid tank 6 are provided with an infusion component for conveying the wet wipes liquid to the liquid inlet end of the spray head 21.

[0027] It should be noted that the plurality of spray heads 21 in each group are evenly distributed in a linear array along the width direction of the wet wipe substrate 3; the bottom of the mounting plate 22 is fixed to the top of the base plate 1, the spray mechanism 2 is located between the plurality of feeding devices 4, and the control system is electrically connected to the feeding device 4 and the spray head 21 respectively; the base plate 1 serves as the supporting structure of the equipment, and the control system is used to realize the control of fully automatic wet wipe liquid spraying. The wet wipe substrate 3 is composed of an oil absorption layer 31 and a water absorption layer 32, which are respectively used to absorb and retain different types of wet wipe liquids, and the feeding device 4 is It is used to transport the wet wipe substrate 3 to the bottom of the spraying mechanism 2 for spraying; the spraying mechanism 2 includes three groups of spray heads 21, which are positioned to align with different parts of the wet wipe substrate 3. The middle group of spray heads 21 is directly facing the top of the oil absorption layer 31, and the two groups on both sides are facing the bottom of the water absorption layer 32, so as to optimize the distribution of liquid in the double-layer material, first spray a small amount on the water absorption layer 32, then spray the oil absorption layer 31, and finally spray the water absorption layer 32 to ensure uniform wetting and reduce liquid loss, thereby ensuring that the wet wipe liquid can be accurately and evenly sprayed on the designated position of the wet wipe substrate 3.

[0028] Specifically, the feeding device 4 can be a matching structure of a power source and a transmission roller to realize the operation of conveying the wet wipes substrate 3. The specific structure is a mechanical structure in the prior art that can convert rotational motion into linear motion, which is common knowledge in the field. Therefore, this application no longer explains the control method and structure in detail, and no detailed description is made here; the control method of the control system and the control circuit for realizing full-automatic wet wipes liquid spraying are realized by a programmable controller, which is prior art and can be realized by programming by technicians in this field. It is common knowledge in the field. Therefore, this application no longer explains the control method and module in detail, and no detailed description is made here.

[0029] In some embodiments, the material of the oil absorption layer 31 is polyester or nylon; the material of the water absorption layer 32 is viscose fiber or cotton fiber; by using polyester or nylon, a material with strong oil absorption performance for the oil absorption layer 31, it can quickly absorb and lock the grease to prevent it from penetrating into the water absorption layer 32; using viscose or cotton fiber, a material with strong water absorption performance and softness for the water absorption layer 32, it can not only absorb excess moisture, but also provide a comfortable touch and reduce the contact between hands and oil stains, so that the combination of the materials of the oil absorption layer 31 and the water absorption layer 32 can give full play to the oil and water absorption properties of the wet wipes.

[0030] In some embodiments, the infusion assembly includes: a plurality of water pumps 7 arranged on one side of the base plate 1, and an infusion tube 71 installed at the output end of the water pump 7; the side surface of the infusion tube 71 close to one end is fixed to the liquid inlet end of a plurality of spray heads 21, and the water pump 7 is electrically connected to the control system.

[0031] It should be noted that a group of water pumps 7 are arranged on the side of the oil absorption tank 5, and the input end is fixed to the side of the oil absorption tank 5, and the infusion pipe 71 at the output end is connected to a group of spray heads 21 located in the middle; two groups of water pumps 7 are arranged on the side of the water absorption tank 6, and the input ends are fixed to the side of the water absorption tank 6, and the infusion pipes 71 at the output end are respectively connected to the two groups of spray heads 21 located on both sides; the control system realizes precise control of wet wipes liquid spraying by controlling the opening and closing of the water pump 7 and the flow rate of the infusion pipe 71. The water pump 7 is used to extract the wet wipes liquid from the liquid storage tank and transport it to the liquid inlet end of the spray head 21 through the infusion pipe 71. The oil absorption tank 5 and the water absorption tank 6 are respectively connected to the corresponding spray heads 21 through their own water pumps 7 and infusion pipes 71, ensuring that different types of wet wipes liquid can be accurately sprayed on the designated positions of the wet wipes substrate 3, thereby improving the accuracy and efficiency of wet wipes liquid spraying.

[0032] In some embodiments, a lifting assembly is provided on the side of the mounting plate 22, and the lifting assembly includes: a cylinder 8 and a linear guide rail 81 fixed on one side of the mounting plate 22, and a movable plate 82 installed on one side of the support plate 23; the output end of the cylinder 8 is fixed to one side of the movable plate 82, the side of the movable plate 82 is slidingly connected to the side of the linear guide rail 81, and the cylinder 8 is electrically connected to the control system.

[0033] It should be noted that the control system can drive the movable plate 82 to drive the support plate 23 and the spray head 21 on the support plate 23 to move up and down by controlling the extension and retraction of the cylinder 8. The distance between the spray head 21 and the wet wipe substrate 3 can be adjusted according to the thickness of the wet wipe substrate 3 and the spraying requirements, thereby ensuring that the wet wipe liquid can be sprayed evenly and accurately on the surface of the wet wipe substrate 3.

[0034] In some embodiments, a limiting block 9 is fixed to one side of the mounting plate 22 , a limiting rod 91 is fixed to one side of the limiting block 9 , and one end of the limiting rod 91 faces one side of the moving plate 82 .

[0035] It should be noted that through the setting of the limit block 9, when the movable plate 82 is driven to rise and fall, since one end of the limit rod 91 is opposite to one side of the movable plate 82, one side of the movable plate 82 can limit the moving range of the movable plate 82 after contacting one end of the limit rod 91, thereby ensuring stability and safety during lifting.

[0036] A spraying method of a wet wipes liquid spraying device for wet wipes production, comprising the following steps: S1. Place the side of the wet tissue substrate 3 to be sprayed on a plurality of feeding devices 4, and make the oil absorption layer 31 of the wet tissue substrate 3 face the spraying end of a group of spray heads 21 located in the middle, and the water absorption layer 32 face the spraying ends of the two groups of spray heads 21 located on both sides; S2, through the control system, control the plurality of feeding devices 4 to realize the feeding of the wet wipes substrate 3, and at the same time control the infusion component to transport the wet wipes liquid of the oil absorption layer 31 inside the oil absorption liquid tank 5 to a group of spray heads 21 located in the middle, and transport the wet wipes liquid of the water absorption layer 32 inside the water absorption liquid tank 6 to the two groups of spray heads 21 located on both sides; S3. Through the control system, according to the forward direction of the wet wipes substrate 3, control a group of spray heads 21 on one side to spray the water absorbing layer 32 wet wipes liquid for the first time, control a group of spray heads 21 in the middle to spray the oil absorbing layer 31 wet wipes liquid for the oil absorbing layer 31, and control a group of spray heads 21 on the other side to spray the water absorbing layer 32 wet wipes liquid for the second time, thereby realizing fully automatic and continuous wet wipes liquid spraying.

[0037] In some embodiments, in step S3, the liquid flow rate of the first spraying of the water absorbing layer 32 wet wipes liquid is 0.4-0.8 L / min, and the liquid pressure is 6-10 MPa; the liquid flow rate of the spraying of the oil absorbing layer 31 wet wipes liquid is 1.5-2 L / min, and the liquid pressure is 6-10 MPa; the liquid flow rate of the second spraying of the water absorbing layer 32 wet wipes liquid is 1-1.5 L / min, and the liquid pressure is 6-10 MPa.

[0038] In some embodiments, the absorbent layer 32 wet wipes liquid contains a surfactant with a concentration of 3-8 wt% and a penetration aid with a concentration of 2-5 wt%; the surfactant is one of sodium alkylbenzene sulfonate or fatty alcohol polyoxyethylene ether, and the penetration aid is one of glycerol or propylene glycol. Example 1

[0039] A spraying method of a wet wipes liquid spraying device for wet wipes production, comprising the following steps: S1. Place the side of the wet tissue substrate 3 to be sprayed on a plurality of feeding devices 4, and make the oil absorption layer 31 of the wet tissue substrate 3 face the spraying end of a group of spray heads 21 located in the middle, and the water absorption layer 32 face the spraying ends of the two groups of spray heads 21 located on both sides; S2. Through the control system, control the feeding devices 4 to realize the feeding of the wet wipes substrate 3 at a speed of 3 m / min, and control the infusion assembly to transport the wet wipes liquid of the oil absorption layer 31 in the oil absorption liquid tank 5 to a group of spray heads 21 located in the middle, and transport the wet wipes liquid of the water absorption layer 32 in the water absorption liquid tank 6 to two groups of spray heads 21 located on both sides; S3. Through the control system, according to the forward direction of the wet wipes substrate 3, control a group of spray heads 21 on one side to spray the wet wipes liquid on the water absorption layer 32 for the first time at a liquid flow rate of 0.5 L / min and a liquid pressure of 8 MPa, control a group of spray heads 21 in the middle to spray the oil absorption layer 31 with a liquid flow rate of 1.8 L / min and a liquid pressure of 8 MPa, and control a group of spray heads 21 on the other side to spray the wet wipes liquid on the water absorption layer 32 for the second time at a liquid flow rate of 1.3 L / min and a liquid pressure of 8 MPa, thereby realizing fully automatic and continuous wet wipes liquid spraying.

[0040] The oil-absorbing layer 31 wet wipes liquid is prepared from the following raw materials in parts by weight: 2 parts of methyl paraben, 4 parts of phenoxyethanol, 1 part of polysorbate 80, 5 parts of hexylene glycol, 2 parts of sodium lauroyl sarcosinate, 3 parts of propylene glycol, 2 parts of cocamidopropyl betaine, 20 parts of propylene glycol methyl ether and 30 parts of water; Preparation steps: The raw materials weighed for the oil absorption layer 31 wet wipes liquid are stirred and mixed evenly to obtain the oil absorption layer 31 wet wipes liquid.

[0041] The water-absorbing layer 32 wet wipes liquid is prepared from the following raw materials in parts by weight: 30 parts of ectoine, 15 parts of chlorhexidine gluconate, 8 parts of acetylglutamine, 4 parts of rice germ extract, 3 parts of chamomile extract, 1.5 parts of natural meadowsweet extract, 5 parts of pH regulator and 40 parts of water; Preparation steps: The raw materials weighed for the water absorbing layer 32 wet wipes liquid are stirred and mixed evenly to obtain the water absorbing layer 32 wet wipes liquid.

[0042] The water-absorbing layer 32 wet wipes liquid contains 5 wt% sodium alkylbenzene sulfonate and 4 wt% propylene glycol. Example 2

[0043] This embodiment is basically the same as Embodiment 1, except that: Step S3 is: through the control system, according to the forward direction of the wet wipes substrate 3, control a group of spray heads 21 on one side to spray the wet wipes liquid on the water absorption layer 32 for the first time at a liquid flow rate of 0.4 L / min and a liquid pressure of 8 MPa, and a group of spray heads 21 in the middle to spray the wet wipes liquid on the oil absorption layer 31 at a liquid flow rate of 1.5 L / min and a liquid pressure of 8 MPa, and a group of spray heads 21 on the other side to spray the wet wipes liquid on the water absorption layer 32 for the second time at a liquid flow rate of 1.1 L / min and a liquid pressure of 8 MPa, thereby realizing fully automatic and continuous wet wipes liquid spraying. Example 3

[0044] This embodiment is basically the same as Embodiment 1, except that: Step S3 is: through the control system, according to the forward direction of the wet wipes substrate 3, control a group of spray heads 21 on one side to spray the wet wipes liquid on the water absorption layer 32 for the first time at a liquid flow rate of 0.8 L / min and a liquid pressure of 8 MPa, control a group of spray heads 21 in the middle to spray the oil absorption layer 31 with a liquid flow rate of 2 L / min and a liquid pressure of 8 MPa, and control a group of spray heads 21 on the other side to spray the wet wipes liquid on the water absorption layer 32 for the second time at a liquid flow rate of 1.5 L / min and a liquid pressure of 8 MPa, thereby realizing fully automatic and continuous wet wipes liquid spraying. Example 4

[0045] This embodiment is basically the same as the embodiment 1, except that the wet wipes liquid in the water-absorbing layer 32 contains sodium alkylbenzene sulfonate at a concentration of 3 wt%. Example 5

[0046] This embodiment is basically the same as the embodiment 1, except that the wet wipes liquid in the water-absorbing layer 32 contains sodium alkylbenzene sulfonate at a concentration of 8 wt%. Example 6

[0047] This embodiment is basically the same as the embodiment 1, except that the wet wipes liquid in the water absorbing layer 32 contains propylene glycol at a concentration of 2 wt%. Example 7

[0048] This embodiment is basically the same as the embodiment 1, except that the wet wipes liquid in the water absorbing layer 32 contains propylene glycol at a concentration of 5 wt%.

[0049] Comparative Example 1 This comparative example is basically the same as Example 1, except that: Step S3 is: through the control system, according to the forward direction of the wet wipes substrate 3, a group of spray heads 21 in the middle are controlled to spray the oil absorption layer 31 with a liquid flow rate of 1.8 L / min and a liquid pressure of 8 MPa, and a group of spray heads 21 located on one side of the middle are controlled to spray the water absorption layer 32 with a liquid flow rate of 1.8 L / min and a liquid pressure of 8 MPa, so as to realize fully automatic and continuous wet wipes liquid spraying.

[0050] Comparative Example 2 This comparative example is basically the same as Example 1, except that: Step S3 is: through the control system, according to the forward direction of the wet wipes substrate 3, a group of spray heads 21 on one side are controlled to spray the wet wipes liquid on the water absorption layer 32 at a liquid flow rate of 1.8 L / min and a liquid pressure of 8 MPa, and a group of spray heads 21 in the middle are controlled to spray the wet wipes liquid on the oil absorption layer 31 at a liquid flow rate of 1.8 L / min and a liquid pressure of 8 MPa, thereby realizing fully automatic and continuous wet wipes liquid spraying.

[0051] Comparative Example 3 This comparative example is basically the same as Example 1, except that the wet wipes liquid in the water-absorbing layer 32 contains sodium alkylbenzene sulfonate at a concentration of 2 wt %.

[0052] Comparative Example 4 This comparative example is basically the same as Example 1, except that the wet wipes liquid in the water-absorbing layer 32 contains sodium alkylbenzene sulfonate at a concentration of 10 wt%.

[0053] Comparative Example 5 This comparative example is basically the same as Example 1, except that the wet wipes liquid in the water-absorbing layer 32 contains propylene glycol at a concentration of 1 wt%.

[0054] Comparative Example 6 This comparative example is basically the same as Example 1, except that the wet wipes liquid in the water-absorbing layer 32 contains propylene glycol at a concentration of 6 wt %.

[0055] Performance test: The wet wipes sprayed with wet wipes liquid obtained in Examples 1-7 and Comparative Examples 1-6 were cut into specifications of 10 cm*10 cm. The wet wipes sprayed with the oil absorption layer 31 wet wipes liquid and the water absorption layer 32 wet wipes liquid were respectively tested for artificial oil removal rate with reference to GB / T27728-2011 Wet Wipes, and the wet wipes sprayed with the standard solution were tested. The average value of three times was taken. The performance test results are shown in Table 1.

[0056] Table 1: Oil removal rate test

[0057] It can be seen from Table 1 that: By comparing Examples 1-3 with Comparative Examples 1-2, it can be seen that in the process of spraying wet wipes liquid, a small amount of the wet wipes liquid of the water absorbing layer 32 is first sprayed onto the water absorbing layer 32, and then the oil absorbing layer 31 wet wipes liquid is sprayed onto the oil absorbing layer 31, and finally the water absorbing layer 32 wet wipes liquid is sprayed onto the water absorbing layer 32; On the one hand, when spraying the wet wipes liquid of the oil absorbing layer 31, a small amount of the wet wipes liquid sprayed on the water absorbing layer 32 has formed a liquid conduction path, providing a direct penetration path for the wet wipes liquid of the oil absorbing layer 31, so that it can penetrate into the water absorbing layer 32 faster, reducing the residence time on the surface of the oil absorbing layer 31, and avoiding the oil absorbing layer 31 directly spraying a large amount of liquid, resulting in excessive accumulation of liquid on the surface, increasing the risk of evaporation or loss, thereby improving the wetting effect; On the other hand, a small amount of wet wipe liquid in the water-absorbing layer 32 can form a tiny liquid bridge between the fibers of the water-absorbing layer 32 and the oil-absorbing layer 31 to connect the inner oil-absorbing layer 31. When the wet wipe liquid is sprayed on the oil-absorbing layer 31, the penetration rate of the oil-absorbing layer 31 can be increased, avoiding the formation of local over-wetting areas on the surface of the oil-absorbing layer 31, ensuring that the liquid is more evenly distributed in the wet wipe substrate 3, avoiding certain areas from being over-wet or dry, ensuring the consistency of wetness, and thus improving the degreasing effect of the wet wipe substrate 3.

[0058] By comparing Example 1 with Examples 4-7, it can be learned that by adding appropriate amounts of surfactants and penetration aids to the liquid in the water-absorbing layer 32, the surfactant can reduce the surface tension of the liquid and form a microemulsion structure, making it easier for the liquid to spread and penetrate into the material, and can help the oil-absorbing layer 31 wet wipes liquid to penetrate faster, thereby enhancing the wettability of the oil-absorbing layer 31 material and promoting the uniform distribution of the liquid. The penetration aid can form a bridge between the liquid and the material, and can help the oil-absorbing layer 31 liquid to penetrate faster, which can not only maintain the softness and water absorption of the water-absorbing layer 32, but also act as a moisturizing ingredient to prevent the hand skin from drying out, thereby further improving the degreasing efficiency.

[0059] By comparing Example 1 with Comparative Examples 3 and 4, it can be learned that when the concentration of the surfactant is too low, the number of surfactant molecules in the solution is insufficient to form a sufficient microemulsion structure and reduce the surface tension of the liquid, making it impossible for it to spread and penetrate effectively. When the concentration of the surfactant is too high, the molecules will be excessively aggregated to form larger micelles, which will reduce the ability of effective dispersion and wetting, affecting not only the uniform distribution of the liquid, but also causing local over-wetting, thereby weakening the degreasing effect.

[0060] By comparing Example 1 with Comparative Examples 5 and 6, it can be learned that when the concentration of the penetration aid is too low, the "bridge" formed between the liquid and the material is not strong enough or the quantity is insufficient, and it is unable to effectively help the liquid diffuse into the interior of the material, resulting in slow liquid penetration and uneven wetting. A penetration aid with too high a concentration can easily cause its molecules to occupy the adsorption sites on the surface of the material fibers, hindering the effective contact between other components and the material, thereby weakening the degreasing effect.

[0061] The above is based on the ideal embodiment of the present invention. Through the above description, it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wet wipes liquid spraying device for wet wipes production, characterized in that: include: A base plate, a control system for realizing fully automatic wet wipes liquid spraying using a controller, and a spraying mechanism mounted on the top of the base plate for spraying the wet wipes liquid onto the wet wipes substrate; The wet wipes substrate comprises: an oil absorption layer and a water absorption layer arranged at the bottom of the oil absorption layer; the top of the bottom plate is located on the side of the wet wipes substrate and is equipped with a plurality of feeding devices for feeding the wet wipes substrate; The spray mechanism comprises: three groups of spray heads arranged on the top of the bottom plate, and a plurality of mounting plates arranged on one side of each group of the spray heads; a support plate is fixed to the side of the plurality of the spray heads in each group, and one side of the support plate is mounted on one side of the plurality of the mounting plates; the three groups of the spray heads are distributed in the following manner: the spray ends of the spray heads of the group located in the middle face the top of the oil absorption layer, and the spray ends of the two groups of the spray heads located on both sides face the bottom of the water absorption layer; An oil absorption liquid tank for carrying the oil absorption layer wet wipes liquid and a water absorption liquid tank for carrying the water absorption layer wet wipes liquid are respectively arranged on both sides of the bottom plate, and the sides of the oil absorption liquid tank and the water absorption liquid tank are both provided with an infusion component for conveying the wet wipes liquid to the liquid inlet end of the spray head.

2. The wet wipes liquid spraying equipment for wet wipes production according to claim 1, characterized in that: The plurality of spray heads in each group are evenly distributed in a linear array along the width direction of the wet wipe substrate; the bottom of the mounting plate is fixed to the top of the base plate, the spray mechanism is located between the plurality of feeding devices, and the control system is electrically connected to the feeding device and the spray head respectively.

3. The wet wipes liquid spraying equipment for wet wipes production according to claim 1, characterized in that: The material of the oil absorption layer is one of polyester or nylon; the material of the water absorption layer is one of viscose fiber or cotton fiber.

4. The wet wipes liquid spraying equipment for wet wipes production according to claim 1, characterized in that: The infusion assembly includes: a plurality of water pumps arranged on one side of the base plate, and an infusion tube installed at the output end of the water pump; the side surface of the infusion tube close to one end is fixed to the liquid inlet end of the plurality of spray heads, and the water pump is electrically connected to the control system.

5. The wet wipes liquid spraying equipment for wet wipes production according to claim 4, characterized in that: A group of water pumps are arranged on the side of the oil absorption liquid tank, and the input end is fixed to the side of the oil absorption liquid tank, and the infusion pipe at the output end is connected to a group of spray heads located in the middle; two groups of water pumps are arranged on the side of the water absorption liquid tank, and the input ends are fixed to the side of the water absorption liquid tank, and the infusion pipes at the output end are respectively connected to the two groups of spray heads located on both sides.

6. The wet wipes liquid spraying equipment for wet wipes production according to claim 1, characterized in that: A lifting assembly is arranged on the side of the mounting plate, and the lifting assembly includes: a cylinder and a linear guide fixed on one side of the mounting plate, and a movable plate installed on one side of the support plate; the output end of the cylinder is fixed to one side of the movable plate, the side of the movable plate is slidably connected to the side of the linear guide, and the cylinder is electrically connected to the control system.

7. The wet wipes liquid spraying equipment for wet wipes production according to claim 6, characterized in that: A limiting block is fixed on one side of the mounting plate, a limiting rod is fixed on one side of the limiting block, and one end of the limiting rod faces one side of the moving plate.

8. A spraying method for wet wipes liquid spraying equipment for wet wipes production based on any one of claims 1-7, characterized in that: The following steps are involved: S1. Place the side of the wet wipe substrate to be sprayed on a plurality of feeding devices, and make the oil absorption layer of the wet wipe substrate face the spraying end of a group of spray heads located in the middle, and the water absorption layer face the spraying ends of the two groups of spray heads located on both sides; S2. Controlling a plurality of feeding devices to feed the wet wipes substrate through a control system, and controlling the infusion assembly to deliver the oil-absorbing layer wet wipes liquid in the oil-absorbing liquid tank to a group of spray heads located in the middle, and to deliver the water-absorbing layer wet wipes liquid in the water-absorbing liquid tank to two groups of spray heads located on both sides; S3. Through the control system, according to the forward direction of the wet wipes substrate, control a group of spray heads on one side to spray the water absorbing layer wet wipes liquid for the first time, a group of spray heads in the middle to spray the oil absorbing layer wet wipes liquid, and a group of spray heads on the other side to spray the water absorbing layer wet wipes liquid for the second time, thereby realizing fully automatic and continuous wet wipes liquid spraying.

9. The spraying method of wet wipes liquid spraying equipment for wet wipes production according to claim 8, characterized in that: In the step S3, the liquid flow rate of the first spraying of the water-absorbing layer wet wipes liquid is 0.4-0.8 L / min, and the liquid pressure is 6-10 MPa; the liquid flow rate of the spraying of the oil-absorbing layer wet wipes liquid is 1.5-2 L / min, and the liquid pressure is 6-10 MPa; the liquid flow rate of the second spraying of the water-absorbing layer wet wipes liquid is 1-1.5 L / min, and the liquid pressure is 6-10 MPa.

10. The spraying method of wet wipes liquid spraying equipment for wet wipes production according to claim 8, characterized in that: The water-absorbing layer wet wipes liquid contains a surfactant with a concentration of 3-8 wt% and a penetration enhancer with a concentration of 2-5 wt%; the surfactant is one of sodium alkylbenzene sulfonate or fatty alcohol polyoxyethylene ether, and the penetration enhancer is one of glycerol or propylene glycol.

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