Production method of grid composite wrinkling wiping paper

Abstract

The invention relates to the technical field of wiping paper production, in particular to a production method of grid composite wrinkled wiping paper. The production method of the grid composite wrinkling wiping paper comprises the following steps: firstly, preheating thermoplastic fibers to 91-93 DEG C, carrying out pre-stretching treatment, taking a plurality of strands of thermoplastic fibers subjected to the pre-stretching treatment as warp yarns, uniformly paving under the traction of a mechanism to form a warp mesh, and taking a plurality of strands of thermoplastic fibers subjected to the pre-stretching treatment as weft yarns, step 3, uniformly spreading on the upper surface of the warp mesh in the step 2 under the traction of a mechanism, overlapping to form gridding cloth, performing corona treatment, hydrophilic treatment and gluing treatment on the obtained gridding cloth, finally performing hot pressing on the upper and lower surfaces of the gridding cloth and compounding toilet paper to form semi-finished wiping paper, and performing low-temperature drying treatment and high-temperature wrinkling treatment to obtain the finished gridding composite wrinkling wiping paper. The toilet paper has the advantages of being soft in hand feeling and excellent in water absorption performance, and the problems that traditional toilet paper is differentiated when encountering water and poor in usability are solved.

Description

Technical Field

[0001] The present application relates to the technical field of wiping paper production, and in particular to a method for producing a grid composite wrinkled wiping paper. Background Art

[0002] At present, the disposable medical and daily hygiene products circulating in the domestic market are mainly non-woven fabrics and ordinary toilet paper. Non-woven fabric products have good wiping effect when wet, but they are expensive and difficult to be accepted by daily consumers. In addition, non-woven paper products cannot be dissolved by water, are not easy to degrade, and have average environmental protection performance. When wiped repeatedly, they are easy to fall off and fluff, which limits their scope of use. Although ordinary toilet paper products are cheap, they are easy to decompose when exposed to water, and the use effect is not ideal.

[0003] In order to solve the technical difficulties existing in existing medical and daily hygiene products, the invention provides a method for producing a grid composite wrinkled wiping paper. Summary of the invention

[0004] In order to solve the technical problem that the price cost and use effect of existing medical and daily hygiene products cannot be taken into account at the same time, the present invention provides a production method of grid composite wrinkled wiping paper.

[0005] The present invention provides a method for producing a grid composite wrinkled wiping paper, which is achieved through the following technical solutions: A method for producing a grid composite wrinkled wiping paper comprises the following steps: Step 1: preheat the thermoplastic fiber to 91-93°C for pre-stretching, so that the thermoplastic fiber has a high degree of orientation, which is helpful for the subsequent shrinkage of the thermoplastic fiber in the oven to form wrinkles; Step 2, preparation of mesh cloth: the multiple strands of thermoplastic fibers pre-stretched in step 1 are used as warp yarns, and are evenly laid flat under the traction of a mechanism to form a warp yarn net. At the same time, the multiple strands of thermoplastic fibers pre-stretched in step 1 are used as weft yarns, and are evenly laid flat on the surface of the warp yarn net under the traction of a mechanism to form a mesh cloth; Step 3, performing corona treatment on the mesh cloth obtained in step 2; Step 4, performing hydrophilic treatment on the mesh cloth that has completed the corona treatment in step 3; Step 5, gluing the mesh cloth that has been hydrophilically treated in step 4; Step 6, hot pressing and laminating the mesh cloth that has been glued in step 5, and hot pressing and laminating the upper and lower surfaces of the mesh cloth with toilet paper to form a semi-finished wiping paper; Step 7: performing low-temperature drying on the semi-finished wiping paper of step 6, wherein the setting temperature of the low-temperature drying is lower than the shrinkage deformation temperature of the thermoplastic fiber; Step eight: subjecting the semi-finished wiping paper that has been subjected to low-temperature drying to high-temperature wrinkling treatment, and rolling it up to obtain a finished grid composite wrinkled wiping paper.

[0006] The invention has the advantages of soft hand feeling and excellent water absorption performance, and overcomes the problems of traditional toilet paper decomposing when exposed to water and having poor usability.

[0007] Preferably, in step 1, the thermoplastic fiber is preheated at 91-93° C. for pre-stretching, the stretching deformation of the thermoplastic fiber is 4-6%, and the thermoplastic fiber is polyester.

[0008] By adopting the above technical scheme, it can be ensured that the high-temperature corrugating process gives the grid composite corrugated wiping paper a good corrugating effect, and the good corrugating effect gives the grid composite corrugated wiping paper a larger adsorption specific surface area, thereby ensuring the softness, comfort and water absorption performance of the grid composite corrugated wiping paper.

[0009] Preferably, the mesh cloth in step 2 has a warp density of 10-15 yarns / 10 cm, and a weft density of 10-15 yarns / 10 cm.

[0010] By adopting the above technical solution, it can be ensured that the grid composite wrinkled wiping paper has good mechanical strength, and after being wetted with water, the grid composite wrinkled wiping paper also has good mechanical properties, thereby improving its performance in use.

[0011] Preferably, the corona treatment parameters in step 3 are as follows: voltage 6-10 kV, treatment time 4-8 s.

[0012] Preferably, the hydrophilic treatment method in step 4 is as follows: the mesh cloth that has been subjected to corona treatment in step 3 is then roller-coated with a hydrophilic treatment solution, and the roller coating amount is 4-6 g / m 2 The hydrophilic treatment liquid includes a wetting agent and deionized water, and the concentration of the wetting agent in the hydrophilic treatment liquid is 4-6‰.

[0013] Preferably, the gluing method in step 5 is as follows: the mesh cloth that has completed the hydrophilic treatment in step 4 is input into the anilox roller for quantitative gluing, and the gluing amount is 6-8g / m 2 The glue used for gluing is water-based polyurethane.

[0014] By adopting the above technical scheme, corona treatment can improve the bonding strength between the mesh cloth and the water-based polyurethane glue, thereby improving the good bonding stability between the mesh cloth and the toilet paper, ensuring the hot pressing composite effect of the mesh composite wrinkled wiping paper, and improving the processing quality stability of the mesh composite wrinkled wiping paper in the same batch.

[0015] The polyurethane glue in the present invention can achieve good bonding stability while giving the grid composite wrinkled wiping paper good overall flexibility, avoiding wrinkling due to fiber thermal shrinkage, affecting the bonding stability of toilet paper and polyester fiber, and is beneficial to improving the quality stability of the grid composite wrinkled wiping paper in the same batch.

[0016] Preferably, in step six, the mesh cloth that has been glued in step five is fed into a hot pressing composite roller for hot pressing composite treatment, the roller surface temperature of the hot pressing roller is 75-90° C., and the hot pressing composite pressure is 5000-6500N.

[0017] By adopting the above technical solution, the hot pressing compounding effect of the grid composite wrinkled wiping paper can be improved, and the processing quality stability of the grid composite wrinkled wiping paper in the same batch can be improved.

[0018] Preferably, in step seven, the semi-finished wiping paper in step six is ​​subjected to low-temperature drying treatment, and then the semi-finished wiping paper obtained is subjected to tension blocking treatment, so that the mesh cloth and the toilet paper are in a relaxed state, the pressure applied by the pressure roller is 2000-4000N, and the linear speed of the pressure roller is 0.85-95 times the linear speed of the transmission roller.

[0019] Preferably, in step seven, the semi-finished wiping paper in step six is ​​subjected to low-temperature drying treatment through parallel hot pressing plates, the transmission speed of the semi-finished wiping paper is 18-24 cm / s, the length of the parallel hot pressing plates is 1-2 m, the low-temperature drying treatment is 5-10 s, and the set temperature of the low-temperature drying is 75-90°C.

[0020] Preferably, in step eight, the semi-finished wiping paper that has undergone low-temperature drying is input into a high-temperature oven for high-temperature wrinkling treatment, the set temperature of the high-temperature oven is 150-160°C, the high-temperature drying stroke is 2-4m, the transmission speed is 18-24cm / s, the high-temperature drying treatment is 12-20s, and the finished grid composite wrinkled wiping paper can be obtained by winding.

[0021] By adopting the above technical solution, a low tension zone is formed between "compounding" and "tension blocking", so that the mesh is in a relaxed state after being compounded with the paper. The mesh fibers are baked in the "high-temperature shrinkage zone", that is, the oven temperature is set to ≥ the fiber shrinkage temperature (the temperature is generally set to ≥150°C, the polyester plastic deformation shrinks, and the toilet paper is bonded to the fibers in the mesh cloth after gluing, and shrinks and wrinkles under the force of polyester shrinkage.

[0022] In summary, this application has the following advantages: 1. The present invention has the advantages of soft hand feeling and excellent water absorption performance, which overcomes the problem of traditional toilet paper decomposing when exposed to water and poor usability.

[0023] 2. The production method of the present invention is relatively simple and has low operating difficulty, which facilitates industrial mass production, thereby reducing the total production cost of the finished grid composite wrinkled wiping paper and improving the market competitiveness of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the hot pressing composite system used for producing grid composite wrinkled wiping paper in the present invention.

[0025] Figure 2 It is a schematic diagram of the connection structure of a hydrophilic treatment roller group, a glue roller group, a hot pressing composite roller group, a low-temperature parallel hot pressing plate group, and a tension blocking roller group A in a hot pressing composite system for producing grid composite wrinkled wiping paper of the present invention.

[0026] In the figure, 1. oven for pre-stretching thermoplastic fiber; 100. thermoplastic fiber winding roller; 101. thermoplastic fiber transmission roller; 102. pre-stretched polyester fiber storage cylinder; 11. oven body; 12. hot pressing roller group; 121. first pressing roller; 122. first transmission roller; 2. non-woven mesh cloth web forming equipment; 3. corona surface treatment machine; 4. hydrophilic treatment roller group; 41. first liquid tank; 42. hydrophilic liquid driving roller; 5. glue roller group; 51. second liquid tank; 52. glue driving roller; 6. hot pressing roller group; 7. hot pressing roller group; 8. hot pressing roller group; 9. hot pressing roller group; 10. hot pressing roller group; 11. hot pressing roller group; 12 ... Composite roller group; 600, first toilet paper winding roller; 601, second toilet paper winding roller; 602, guide roller group A; 603, guide roller group B; 61, first hot pressing roller; 611, cylinder; 62, second hot pressing roller; 7, low-temperature parallel hot pressing plate group; 71, heating plate; 8, tension blocking roller group A; 80, tension blocking roller group B; 81, second pressing roller; 82, second pressing roller; 9, high-temperature oven; 91, high-temperature oven box; 92, driving roller; 10, finished grid composite wrinkled wiping paper winding roller. DETAILED DESCRIPTION

[0027] In order to further understand the creativity and technical progress of the present invention, the preferred embodiments of the present invention are discussed in detail in combination with examples and comparative examples. It should be noted that: this specific embodiment is only an explanation of the technical solution of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to the present embodiment without creative contribution as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law. Example

[0028] refer to Figure 1A hot pressing composite system for producing mesh composite wrinkled wiping paper includes a thermoplastic fiber pre-stretching oven 1, a non-woven mesh cloth web forming device 2, a corona surface treatment machine 3, a hydrophilic treatment roller group 4, a glue roller group 5, a hot pressing composite roller group 6, a low-temperature parallel hot pressing plate group 7, a tension blocking roller group A8, a high-temperature oven 9, and a finished mesh composite wrinkled wiping paper winding roller 10.

[0029] refer to Figure 1 The oven 1 for pre-stretching thermoplastic fibers includes an oven body 11 and a plurality of hot pressing roller groups 12 that are rotatable and fixedly connected to the oven body 11. A single hot pressing roller group 12 includes a first pressing roller 121 and a first transmission roller 122. The first pressing roller 121 can move up and down along the oven body 11 to adjust the distance between the first pressing roller 121 and the first transmission roller 122, and adjust the roller pressure parameters of the hot pressing roller group 12. The first transmission roller 122 is coaxially connected to a driving motor. The linear speed of the first transmission roller 122 is controlled by manipulating the driving motor, and the linear speed of the first transmission roller 122 and the unwinding speed of the polyester fiber are adjusted to control the pre-stretching deformation of the polyester fiber.

[0030] refer to Figure 1 The pre-stretching treatment method of the polyester fiber is as follows: the polyester is loaded on the thermoplastic fiber winding roller 100, and the speed of the polyester unwinding on the thermoplastic fiber winding roller 100 is controlled by the thermoplastic fiber transmission roller 101 located downstream of the thermoplastic fiber winding roller 100. The polyester output by the thermoplastic fiber transmission roller 101 enters the oven body 11, and sequentially passes through a plurality of hot pressing roller groups 12 that rotate and are fixedly connected to the oven body 11. The ratio of the linear speed of the thermoplastic fiber transmission roller 101 to the linear speed of the first transmission roller 122 in the hot pressing roller group 12 is 1: (1.04-1.06), so that the pre-stretching amount of the polyester fiber output from the thermoplastic fiber pre-stretching oven 1 is 4-6%, and the pre-stretched polyester fiber output from the thermoplastic fiber pre-stretching oven 1 is rolled up in the pre-stretched polyester fiber storage cylinder 102.

[0031] The non-woven mesh fabric web-forming device 2 is an invention patent applied for by our company on June 28, 2024. For details, please refer to the non-woven mesh fabric web-forming device disclosed in the application publication number CN 118600648 A. The production method of the mesh fabric is as follows: a plurality of pre-stretched polyester fiber storage cylinders 102 are loaded on the warp pay-off mechanism, and a plurality of pre-stretched polyester fiber storage cylinders 102 are loaded on the weft pay-off mechanism, and the mesh fabric is continuously produced by the non-woven mesh fabric web-forming device, and the warp yarn density is 12 yarns / 10cm, and the weft yarn density is 12 yarns / 10cm.

[0032] The corona surface treatment machine 3 is a special discharge system for coating composite blown film equipment provided by Shanghai Keyong Electronics Co., Ltd. It performs double-sided corona treatment on the mesh cloth woven by the non-woven mesh cloth forming equipment 2. The corona treatment parameters are voltage 6-10kV and treatment time 4-8s, specifically, voltage 8kV and treatment time 5s.

[0033] refer to Figure 2 The hydrophilic treatment roller group 4 includes a first liquid tank 41 containing a hydrophilic treatment liquid, a hydrophilic liquid driving roller 42 which is rotatably and fixedly connected to a bracket, and the lower surface of the hydrophilic liquid driving roller 42 is immersed in the hydrophilic treatment liquid in the first liquid tank 41. The hydrophilic treatment liquid in the first liquid tank 41 is made of 994-996 parts by weight of deionized water and 4-6 parts by weight of a wetting agent, and the roller coating amount is 4-6g / m 2 .

[0034] refer to Figure 2 The glue roller group 5 includes a second liquid tank 51 for containing water-based polyurethane, and a glue driving roller 52 which is rotatably and fixedly connected to the bracket, and the lower surface of the glue driving roller 52 is immersed in the water-based polyurethane in the second liquid tank 51. The glue driving roller 52 is an anilox roller with a glue coating amount of 6-8g / m 2 .

[0035] refer to Figure 2 The hot pressing composite roller group 6 includes a first hot pressing roller 61 and a second hot pressing roller 62, and the first hot pressing roller 61 and the second hot pressing roller 62 are both rotated and fixedly connected to the bracket. The first hot pressing roller 61 is located directly above the second hot pressing roller 62, and the first hot pressing roller 61 can move up and down along the bracket to adjust the pressure parameters of the first hot pressing roller 61 on the toilet paper / mesh cloth / toilet paper. The second hot pressing roller 62 is coaxially fixedly connected to the drive motor, and the drive motor controls the linear speed of the second hot pressing roller 62. The linear speed of the second hot pressing roller 62 is equal to 0.95-1.00 times the transmission speed of the toilet paper / mesh cloth / toilet paper. When the linear speed of the second hot pressing roller 62 is lower than the transmission speed of the toilet paper / mesh cloth / toilet paper, it can have the effect of tension blocking.

[0036] refer to Figure 2 , the driving mode of the first hot pressing roller 61, the bracket connected to the first hot pressing roller 61 is fixedly connected with a cylinder 611. The push rod of the cylinder 611 is fixedly connected with a bearing, and the rotating rod of the first hot pressing roller 61 rotates and is fixedly connected to the bearing on the push rod of the cylinder 611. The pressure parameters of the first hot pressing roller 61 on the toilet paper / mesh cloth / toilet paper can be adjusted by the cylinder 611. The driving mode of the first pressing roller 121 in the oven 1 for pre-stretching thermoplastic fibers is the same as the driving mode of the first hot pressing roller 61.

[0037] refer to Figure 2, the hot pressing compounding method of toilet paper / mesh cloth / toilet paper in the hot pressing compounding roller group 6: one toilet paper is rolled up on the first toilet paper winding roller 600, and the other toilet paper is rolled up on the second toilet paper winding roller 601, the toilet paper of the first toilet paper winding roller 600 is transported to the first hot pressing roller 61 through the guide roller group A602, and the toilet paper of the second toilet paper winding roller 601 is transported to the second hot pressing roller 62 through the guide roller group B603, that is, the semi-finished wiping paper of toilet paper / mesh cloth / toilet paper is formed between the first hot pressing roller 61 and the second hot pressing roller 62, the roller surface temperature of the semi-finished wiping paper after passing through the first hot pressing roller 61 and the second hot pressing roller 62 is 80°C, the hot pressing compounding pressure between the first hot pressing roller 61 and the second hot pressing roller 62 is 6000N, after the hot pressing compounding treatment, the toilet paper is hot pressed and compounded on the surface of the mesh cloth, and the obtained semi-finished wiping paper is input into the low-temperature parallel hot pressing plate group 7 for low-temperature drying treatment.

[0038] refer to Figure 2 The low-temperature parallel hot pressing plate group 7 includes two mutually parallel heating plates 71 located downstream of the hot pressing composite roller group 6. The temperature between the heating plates 71 is 75-90°C, and the temperature between the heating plates 71 is preferably 80°C. The length of the heating plate 71 is 1-2m, and the length of the heating plate 71 is preferably 1.5m. After the toilet paper / grid cloth / toilet paper passes through the two mutually parallel heating plates 71, the low-temperature pre-dried water-based polyurethane glue firmly bonds the polyester fiber in the grid cloth to the toilet paper, thereby improving the quality of the finished grid composite wrinkled wiping paper.

[0039] refer to Figure 2 The tension-breaking roller group A8 includes a second pressure roller 81 and a second pressure roller 82, which are both rotated and fixedly connected to the bracket. The second pressure roller 81 is located directly above the second pressure roller 82, and the second pressure roller 81 can move up and down along the bracket to adjust the pressure parameters of the second pressure roller 81 on the toilet paper / mesh cloth / toilet paper. The second pressure roller 82 is coaxially fixedly connected to the drive motor, which controls the linear speed of the second pressure roller 82. The linear speed of the second pressure roller 82 is equal to 0.85-0.95 times the transmission speed of the toilet paper / mesh cloth / toilet paper, which has the effect of tension blocking, and is convenient for entering the high-temperature oven 9 for heat shrinkage and wrinkling.

[0040] refer to Figure 1 The high temperature oven 9 includes a high temperature oven body 91 and a plurality of driving rollers 92 that are rotatably and fixedly connected to the high temperature oven body 91. The set temperature of the high temperature oven is 150-160°C, the high temperature drying stroke is 2-4m, the transmission speed of the toilet paper / mesh cloth / toilet paper in the high temperature oven 9 is 18-24cm / s, and the high temperature drying treatment is 12-20s. Specifically, the set temperature of the high temperature oven is 150°C, the high temperature drying stroke of the semi-finished wiping paper in the high temperature oven 9 is 3m, the transmission speed of the semi-finished wiping paper in the high temperature oven 9 is 20cm / s, and the high temperature drying treatment is 15s.

[0041] refer to Figure 1 The finished wiping paper treated by high temperature wrinkling in high temperature oven 9 is input into tension blocking roller group B80 after passing through guide roller 93, and is wound up on finished mesh composite wrinkled wiping paper winding roller 10 after secondary tension blocking treatment. The structure of tension blocking roller group B80 is the same as that of tension blocking roller group A8.

[0042] A method for producing a grid composite wrinkled wiping paper comprises the following steps: Step 1: preheat the thermoplastic fiber to 91-93°C for pre-stretching, so that the thermoplastic fiber has a high degree of orientation, which is helpful for the subsequent shrinkage of the thermoplastic fiber in the oven to form wrinkles; Step 2, preparation of mesh cloth: the multiple strands of thermoplastic fibers pre-stretched in step 1 are used as warp yarns, and are evenly laid flat under the traction of a mechanism to form a warp yarn net. At the same time, the multiple strands of thermoplastic fibers pre-stretched in step 1 are used as weft yarns, and are evenly laid flat on the surface of the warp yarn net under the traction of a mechanism to form a mesh cloth; Step 3, performing corona treatment on the mesh cloth obtained in step 2; Step 4, performing hydrophilic treatment on the mesh cloth that has completed the corona treatment in step 3; Step 5, gluing the mesh cloth that has been hydrophilically treated in step 4; Step 6, hot pressing and laminating the mesh cloth that has been glued in step 5, and hot pressing and laminating the upper and lower surfaces of the mesh cloth with toilet paper to form a semi-finished wiping paper; Step 7: performing low-temperature drying on the semi-finished wiping paper of step 6, wherein the setting temperature of the low-temperature drying is lower than the shrinkage deformation temperature of the thermoplastic fiber; Step 8: subjecting the semi-finished wiping paper that has been subjected to low-temperature drying to high-temperature wrinkling treatment, and rolling it up to obtain a finished grid composite wrinkled wiping paper with a softness of ≤100mN and a water absorption rate of ≥700%.

[0043] Preferably, in step one, the thermoplastic fiber is polyester, specifically 75D polyester, the polyester is preheated at 91-93° C. for pre-stretching, and the stretching deformation of the thermoplastic fiber is 4-6%, preferably 5%.

[0044] Preferably, the warp density of the mesh cloth in step 2 is 10-15 yarns / 10 cm, and the weft density is 10-15 yarns / 10 cm, specifically, the warp density is 12 yarns / 10 cm, and the weft density is 12 yarns / 10 cm.

[0045] Preferably, the corona treatment parameters in step three are as follows: voltage 6-10 kV, treatment time 4-8 s, specifically, voltage 8 kV, treatment time 5 s.

[0046] Preferably, the hydrophilic treatment method in step 4 is as follows: the mesh cloth that has been subjected to corona treatment in step 3 is then roller-coated with a hydrophilic treatment liquid, and the roller coating amount is 4-6 g / m 2 The hydrophilic treatment liquid includes a wetting agent, BASF Hydropalat WE 3120, and deionized water. The concentration of the wetting agent in the hydrophilic treatment liquid is 4-6‰. Specifically, the roller coating amount is 5g / m 2 The wetting agent concentration in the hydrophilic treatment liquid is 5‰, and the hydrophilic treatment liquid is SD-200 alkylphenol polyoxyethylene ether wetting agent, batch number 2401032.

[0047] Preferably, the gluing method in step 5 is as follows: the mesh cloth that has completed the hydrophilic treatment in step 4 is input into the anilox roller for quantitative gluing, and the gluing amount is 6-8g / m 2 The glue used for gluing is water-based polyurethane. Specifically, the glue coating amount is 7.5g / m 2 The glue used for gluing is water-based polyurethane, specifically the water-based polyurethane of Chuanhua Group, with a solid content of 40%.

[0048] Preferably, in step 6, the mesh cloth that has been glued in step 5 is fed into a hot pressing composite roller for hot pressing composite treatment, the roller surface temperature of the hot pressing roller is 75-90°C, and the hot pressing composite pressure is 5000-6500 N. Specifically, the roller surface temperature of the hot pressing roller is 80°C, and the hot pressing composite pressure is 6000N.

[0049] Preferably, in step 7, the semi-finished wiping paper in step 6 is subjected to low-temperature drying treatment, and then the semi-finished wiping paper is subjected to tension blocking treatment, so that the mesh cloth and the toilet paper are in a relaxed state, the pressure applied by the pressure roller is 2000-4000N, and the linear speed of the pressure roller is 0.85-95 times the linear speed of the transmission roller. Specifically, the pressure applied by the pressure roller is 3500N, and the linear speed of the pressure roller is 0.92 times the linear speed of the transmission roller.

[0050] Preferably, in step seven, the semi-finished wiping paper in step six is ​​subjected to low-temperature drying treatment through parallel hot pressing plates, the transmission speed of the semi-finished wiping paper is 18-24 cm / s, the length of the parallel hot pressing plates is 1-2 m, the low-temperature drying treatment is 5-10 s, and the setting temperature of the low-temperature drying is 75-90° C. Specifically, the transmission speed of the semi-finished wiping paper is 20 cm / s, the length of the parallel hot pressing plates is 1.5 m, the low-temperature drying treatment is 7.5 s, and the setting temperature of the low-temperature drying is 80° C.

[0051] Preferably, in step eight, the semi-finished wiping paper that has been subjected to low-temperature drying is input into a high-temperature oven for high-temperature wrinkling treatment, the set temperature of the high-temperature oven is 150-160°C, the high-temperature drying stroke is 2-4m, the transmission speed is 18-24cm / s, the high-temperature drying treatment is 12-20s, and the finished grid composite wrinkled wiping paper is rolled up. Specifically, the set temperature of the high-temperature oven is 150°C, the high-temperature drying stroke is 3m, the transmission speed is 20cm / s, and the high-temperature drying treatment is 15s.

[0052] Specific embodiment A: A method for producing a grid composite wrinkled wiping paper, comprising the following steps: Step 1: polyester is loaded on the thermoplastic fiber winding roller 100, the speed of the polyester unwinding on the thermoplastic fiber winding roller 100 is 10 cm / s, the polyester output by the thermoplastic fiber transmission roller 101 enters the oven body 11, and sequentially passes through a plurality of hot pressing roller groups 12 that rotate and are fixedly connected to the oven body 11, the ratio of the linear speed of the thermoplastic fiber transmission roller 101 to the linear speed of the first transmission roller 122 in the hot pressing roller group 12 is 1:1.05, the pre-stretching amount of the polyester fiber output from the thermoplastic fiber pre-stretching oven 1 is 5%, and the polyester fiber with a pre-stretching amount of 5% output from the thermoplastic fiber pre-stretching oven 1 is rolled up in the pre-stretched polyester fiber storage drum 102; Step 2: Loading multiple pre-stretched polyester fiber storage cylinders 102 prepared in step 1 into a warp pay-off mechanism, and also loading multiple pre-stretched polyester fiber storage cylinders 102 prepared in step 1 into a weft pay-off mechanism, and continuously producing a mesh cloth through a non-woven mesh cloth forming device, wherein the warp density of the mesh cloth is 12 yarns / 10 cm, and the weft density is 12 yarns / 10 cm; Step 3, corona treatment is performed on the mesh cloth obtained in step 2, and the mesh cloth obtained in step 2 is transferred to the corona surface treatment machine 3 for double-sided corona treatment, with a voltage of 8 kV and a treatment time of 5 s; Step 4: Perform hydrophilic treatment on the mesh cloth that has been treated with corona in step 3. The mesh cloth that has been treated with corona is driven by the hydrophilic liquid to roll on the hydrophilic treatment liquid. The amount of the roll coating is 5 g / m 2 The transmission speed is 20cm / s, and after 5s of transmission, it enters the glue roller group 5; Step 5: Glue the mesh cloth treated with hydrophilicity in step 4. The mesh cloth treated with hydrophilicity is passed through a glue driven roller 52, and the roller coating amount is 7.5 g / m 2 The transmission speed is 20cm / s, and after 5s of transmission, it enters the hot pressing composite roller group 6; Step six, the mesh cloth that has completed the gluing treatment in step six is ​​subjected to hot pressing and compounding treatment, one toilet paper is rolled up on the first toilet paper rolling roller 600, and the other toilet paper is rolled up on the second toilet paper rolling roller 601. The toilet paper of the first toilet paper rolling roller 600 is transported to the first hot pressing roller 61 through the guide roller group A602, and the transmission speed is 20 cm / s; the toilet paper of the second toilet paper rolling roller 601 is transported to the second hot pressing roller 62 through the guide roller group B603, and the transmission speed is 20 cm / s, that is, a semi-finished wiping paper stacking structure of toilet paper / mesh cloth / toilet paper is formed between the first hot pressing roller 61 and the second hot pressing roller 62, and the roller surface temperature of the semi-finished wiping paper after passing through the first hot pressing roller 61 and the second hot pressing roller 62 is 80°C, and the hot pressing compounding pressure between the first hot pressing roller 61 and the second hot pressing roller 62 is 6000N. After the hot pressing and compounding treatment, the toilet paper is hot pressed and compounded on the surface of the mesh cloth to form a semi-finished wiping paper of toilet paper / mesh cloth / toilet paper; Step 7: The semi-finished wiping paper in step 6 is input into the low-temperature parallel hot pressing plate group 7 for low-temperature drying. The length of the heating plate 71 is preferably 1.5 m, the transmission speed is 20 cm / s, the temperature between the heating plates 71 is 80° C., and the low-temperature drying process is 7.5 seconds. Step eight, the semi-finished wiping paper that has completed the low-temperature drying treatment in step seven is tension-blocked by the tension-blocking roller group A8, the roller pressure is 3500N, the linear speed of the second pressure roller 82 is equal to 0.95 times the transmission speed of the toilet paper / mesh cloth / toilet paper, and the semi-finished wiping paper that has undergone the tension-blocking treatment enters the high-temperature oven 9 for high-temperature wrinkling treatment. The set temperature of the high-temperature oven is 150°C, the high-temperature drying stroke is 3m, the transmission speed is 20cm / s, and the high-temperature drying treatment is 15s. The finished wiping paper that has undergone the high-temperature wrinkling treatment in the high-temperature oven 9 passes through the guide roller 93 and is input into the tension-blocking roller group B80. After the secondary tension-blocking treatment by the blocking roller group B80, it is rolled up on the finished mesh composite wrinkled wiping paper winding roller 10 to obtain the finished mesh composite wrinkled wiping paper.

[0053] Specific embodiment B: A method for producing a grid composite wrinkled wiping paper, comprising the following steps: Step 1: polyester is loaded on the thermoplastic fiber winding roller 100, the speed of the polyester unwinding on the thermoplastic fiber winding roller 100 is 10 cm / s, the polyester output by the thermoplastic fiber transmission roller 101 enters the oven body 11, and sequentially passes through a plurality of hot pressing roller groups 12 that rotate and are fixedly connected to the oven body 11, the ratio of the linear speed of the thermoplastic fiber transmission roller 101 to the linear speed of the first transmission roller 122 in the hot pressing roller group 12 is 1:1.04, the pre-stretching amount of the polyester fiber output from the thermoplastic fiber pre-stretching oven 1 is 4%, and the polyester fiber with a pre-stretching amount of 4% output from the thermoplastic fiber pre-stretching oven 1 is rolled up in the pre-stretched polyester fiber storage drum 102; Step 2: Loading multiple pre-stretched polyester fiber storage cylinders 102 prepared in step 1 into a warp pay-off mechanism, and also loading multiple pre-stretched polyester fiber storage cylinders 102 prepared in step 1 into a weft pay-off mechanism, and continuously producing a mesh cloth through a non-woven mesh cloth forming device, wherein the warp yarn density of the mesh cloth is 15 yarns / 10 cm, and the weft yarn density is 15 yarns / 10 cm; Step 3, corona treatment is performed on the mesh cloth obtained in step 2, and the mesh cloth obtained in step 2 is transferred to the corona surface treatment machine 3 for double-sided corona treatment, with a voltage of 8 kV and a treatment time of 5 s; Step 4: Perform hydrophilic treatment on the mesh cloth that has been treated with corona in step 3. The mesh cloth that has been treated with corona is driven by the hydrophilic liquid to roll on the hydrophilic treatment liquid. The amount of the roll coating is 5 g / m 2 The transmission speed is 20cm / s, and after 5s of transmission, it enters the glue roller group 5; Step 5: Glue the mesh cloth treated with hydrophilicity in step 4. The mesh cloth treated with hydrophilicity is passed through a glue driven roller 52, and the roller coating amount is 7.5 g / m 2 The transmission speed is 20cm / s, and after 5s of transmission, it enters the hot pressing composite roller group 6; Step six, the mesh cloth that has completed the gluing treatment in step six is ​​subjected to hot pressing and compounding treatment, one toilet paper is rolled up on the first toilet paper rolling roller 600, and the other toilet paper is rolled up on the second toilet paper rolling roller 601. The toilet paper of the first toilet paper rolling roller 600 is transported to the first hot pressing roller 61 through the guide roller group A602, and the transmission speed is 20 cm / s; the toilet paper of the second toilet paper rolling roller 601 is transported to the second hot pressing roller 62 through the guide roller group B603, and the transmission speed is 20 cm / s, that is, a semi-finished wiping paper stacking structure of toilet paper / mesh cloth / toilet paper is formed between the first hot pressing roller 61 and the second hot pressing roller 62, and the roller surface temperature of the semi-finished wiping paper after passing through the first hot pressing roller 61 and the second hot pressing roller 62 is 90°C, and the hot pressing compounding pressure between the first hot pressing roller 61 and the second hot pressing roller 62 is 5000N. After the hot pressing and compounding treatment, the toilet paper is hot pressed and compounded on the surface of the mesh cloth to form a semi-finished wiping paper of toilet paper / mesh cloth / toilet paper; Step 7: The semi-finished wiping paper in step 6 is input into the low-temperature parallel hot pressing plate group 7 for low-temperature drying. The length of the heating plate 71 is preferably 1.5 m, the transmission speed is 20 cm / s, the temperature between the heating plates 71 is 75° C., and the low-temperature drying process is 7.5 seconds. Step eight, the semi-finished wiping paper that has completed the low-temperature drying treatment in step seven is tension-blocked by the tension-blocking roller group A8, the roller pressure is 3000N, the linear speed of the second pressing roller 82 is equal to 0.92 times the transmission speed of the toilet paper / mesh cloth / toilet paper, and the semi-finished wiping paper that has undergone the tension-blocking treatment enters the high-temperature oven 9 for high-temperature wrinkling treatment. The set temperature of the high-temperature oven is 155°C, the high-temperature drying stroke is 3m, the transmission speed is 20cm / s, and the high-temperature drying treatment is 15s. The finished wiping paper that has undergone the high-temperature wrinkling treatment in the high-temperature oven 9 passes through the guide roller 93 and is input into the tension-blocking roller group B80. After the secondary tension-blocking treatment by the blocking roller group B80, it is rolled up on the finished mesh composite wrinkled wiping paper winding roller 10 to obtain the finished mesh composite wrinkled wiping paper.

[0054] Control group: A method for producing a grid composite wrinkled wiping paper, comprising the following steps: Step 1: polyester is loaded on the thermoplastic fiber winding roller 100, the speed of the polyester unwinding from the thermoplastic fiber winding roller 100 is 10 cm / s, the polyester output from the thermoplastic fiber transmission roller 101 enters the oven body 11, and sequentially passes through a plurality of hot pressing roller groups 12 that rotate and are fixedly connected to the oven body 11, the ratio of the linear speed of the thermoplastic fiber transmission roller 101 to the linear speed of the first transmission roller 122 in the hot pressing roller group 12 is 1:1.025, the pre-stretching amount of the polyester fiber output from the thermoplastic fiber pre-stretching oven 1 is 2.5%, and the polyester fiber with a pre-stretching amount of 2.5% output from the thermoplastic fiber pre-stretching oven 1 is rolled up in the pre-stretched polyester fiber storage drum 102; Step 2: Loading multiple pre-stretched polyester fiber storage cylinders 102 prepared in step 1 into a warp pay-off mechanism, and also loading multiple pre-stretched polyester fiber storage cylinders 102 prepared in step 1 into a weft pay-off mechanism, and continuously producing a mesh cloth through a non-woven mesh cloth forming device, wherein the warp density of the mesh cloth is 12 yarns / 10 cm, and the weft density is 12 yarns / 10 cm; Step 3, corona treatment is performed on the mesh cloth obtained in step 2, and the mesh cloth obtained in step 2 is transferred to the corona surface treatment machine 3 for single-sided corona treatment, with a voltage of 8 kV and a treatment time of 5 s; Step 4: Perform hydrophilic treatment on the mesh cloth that has been treated with corona in step 3. The mesh cloth that has been treated with corona is driven by the hydrophilic liquid to roll on the hydrophilic treatment liquid. The amount of the roll coating is 3.0 g / m 2 The transmission speed is 20cm / s, and after 5s of transmission, it enters the glue roller group 5; Step 5: Glue the mesh cloth treated with hydrophilicity in step 4. The mesh cloth treated with hydrophilicity is passed through a glue driven roller 52, and the roller coating amount is 5g / m 2 The transmission speed is 20cm / s, and after 5s of transmission, it enters the hot pressing composite roller group 6; Step six, the mesh cloth that has completed the gluing treatment in step six is ​​subjected to hot pressing and compounding treatment, one toilet paper is rolled up on the first toilet paper winding roller 600, and the other toilet paper is rolled up on the second toilet paper winding roller 601. The toilet paper of the first toilet paper winding roller 600 is conveyed to the first hot pressing roller 61 through the guide roller group A602, and the transmission speed is 20 cm / s; the toilet paper of the second toilet paper winding roller 601 is conveyed to the second hot pressing roller 62 through the guide roller group B603, and the transmission speed is 20 cm / s, that is, a semi-finished wiping paper stacking structure of toilet paper / mesh cloth / toilet paper is formed between the first hot pressing roller 61 and the second hot pressing roller 62, and the roller surface temperature of the semi-finished wiping paper after passing through the first hot pressing roller 61 and the second hot pressing roller 62 is 80°C, and the hot pressing compounding pressure between the first hot pressing roller 61 and the second hot pressing roller 62 is 3000N. After the hot pressing and compounding treatment, the toilet paper is hot pressed and compounded on the surface of the mesh cloth to form a semi-finished wiping paper of toilet paper / mesh cloth / toilet paper; Step 7: The semi-finished wiping paper in step 6 is input into the low-temperature parallel hot pressing plate group 7 for low-temperature drying. The length of the heating plate 71 is preferably 1.5 m, the transmission speed is 20 cm / s, the temperature between the heating plates 71 is 70° C., and the low-temperature drying process is 7.5 seconds. Step eight, the semi-finished wiping paper that has completed the low-temperature drying treatment in step seven is tension-blocked by the tension-blocking roller group A8, the roller pressure is 2500N, the linear speed of the second pressure roller 82 is equal to 0.98 times the transmission speed of the toilet paper / mesh cloth / toilet paper, and the semi-finished wiping paper that has undergone the tension-blocking treatment enters the high-temperature oven 9 for high-temperature wrinkling treatment. The set temperature of the high-temperature oven is 145°C, the high-temperature drying stroke is 3m, the transmission speed is 20cm / s, and the high-temperature drying treatment is 15s. The finished wiping paper that has undergone the high-temperature wrinkling treatment in the high-temperature oven 9 passes through the guide roller 93 and is input into the tension-blocking roller group B80. After the secondary tension-blocking treatment by the blocking roller group B80, it is rolled up on the finished mesh composite wrinkled wiping paper winding roller 10 to obtain the finished mesh composite wrinkled wiping paper.

[0055] The performance tests are as follows: the softness of the grid composite wrinkled wiping paper in the specific embodiment A (GB / T 18318.1-2009 Determination of the bending properties of textiles Part 1: Inclined plane method) is 68mN, and the water absorption rate (GB / T 461.3-2005 Determination of the water absorption of paper and paperboard (immersion method) standard) is 789%. The softness of the grid composite wrinkled wiping paper in the specific embodiment B (GB / T 18318.1-2009 Determination of the bending properties of textiles Part 1: Inclined plane method) is 89mN, and the water absorption rate (GB / T 461.3-2005 Determination of the water absorption of paper and paperboard (immersion method) standard) is 715%. The softness of the grid composite wrinkled wiping paper in the control group (GB / T 18318.1-2009 Determination of bending properties of textiles Part 1: Inclined plane method) is 115mN, and the water absorption rate (GB / T 461.3-2005 Determination of water absorption of paper and paperboard (immersion method) standard) is 623%. In summary, the present invention has the advantages of soft hand feel and excellent water absorption performance, overcoming the problems of traditional toilet paper decomposing when exposed to water and deviation in usability.

Claims

1. A method for producing a grid composite wrinkled wiping paper, characterized in that: The following steps are involved: Step 1: preheat the thermoplastic fiber to 91-93°C for pre-stretching, so that the thermoplastic fiber has a high degree of orientation, which is helpful for the subsequent shrinkage of the thermoplastic fiber in the oven to form wrinkles; Step 2, preparation of mesh cloth: the multiple strands of thermoplastic fibers pre-stretched in step 1 are used as warp yarns, and are evenly laid flat under the traction of a mechanism to form a warp yarn net. At the same time, the multiple strands of thermoplastic fibers pre-stretched in step 1 are used as weft yarns, and are evenly laid flat on the surface of the warp yarn net under the traction of a mechanism to form a mesh cloth; Step 3, performing corona treatment on the mesh cloth obtained in step 2; Step 4, performing hydrophilic treatment on the mesh cloth that has completed the corona treatment in step 3; Step 5, gluing the mesh cloth that has been hydrophilically treated in step 4; Step 6, hot pressing and laminating the mesh cloth that has been glued in step 5, and hot pressing and laminating the upper and lower surfaces of the mesh cloth with toilet paper to form a semi-finished wiping paper; Step 7: performing low-temperature drying on the semi-finished wiping paper of step 6, wherein the setting temperature of the low-temperature drying is lower than the shrinkage deformation temperature of the thermoplastic fiber; Step eight: subjecting the semi-finished wiping paper that has been subjected to low-temperature drying to high-temperature wrinkling treatment, and rolling it up to obtain a finished grid composite wrinkled wiping paper.

2. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: In the step 1, the thermoplastic fiber is preheated at 91-93° C. and pre-stretched, and the stretching deformation of the thermoplastic fiber is 4-6%. The thermoplastic fiber is polyester.

3. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: The warp yarn density of the mesh cloth in step 2 is 10-15 yarns / 10cm, and the weft yarn density is 10-15 yarns / 10cm.

4. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: The corona treatment parameters in step 3 are as follows: voltage 6-10 kV, treatment time 4-8 s.

5. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: The hydrophilic treatment method of step 4 is as follows: the mesh cloth that has completed the corona treatment in step 3 can be roller-coated with the hydrophilic treatment liquid, and the roller coating amount is 4-6g / m 2 The hydrophilic treatment liquid includes a wetting agent and deionized water, and the concentration of the wetting agent in the hydrophilic treatment liquid is 4-6‰.

6. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: The specific method of gluing in step 5 is as follows: the mesh cloth after the hydrophilic treatment in step 4 is input into the anilox roller for quantitative gluing, and the gluing amount is 6-8g / m 2 The glue used for gluing is water-based polyurethane.

7. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: In the step six, the mesh cloth which has been glued in the step five is input into a hot pressing composite roller for hot pressing composite treatment, the roller surface temperature of the hot pressing roller is 75-90° C., and the hot pressing composite pressure is 5000-6500N.

8. The method for producing a grid composite wrinkled wiping paper according to claim 7, characterized in that: In the step seven, the semi-finished wiping paper in step six is ​​subjected to low-temperature drying treatment, and then the semi-finished wiping paper is subjected to tension blocking treatment, so that the mesh cloth and the toilet paper are in a relaxed state, the pressure applied by the pressure roller is 2000-4000N, and the linear speed of the pressure roller is 0.85-95 times the linear speed of the transmission roller.

9. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: In the step seven, the semi-finished wiping paper in step six is ​​subjected to low-temperature drying treatment through parallel hot pressing plates, the transmission speed of the semi-finished wiping paper is 18-24 cm / s, the length of the parallel hot pressing plates is 1-2 m, the low-temperature drying treatment is 5-10 s, and the set temperature of the low-temperature drying is 75-90°C.

10. The method for producing a grid composite wrinkled wiping paper according to claim 1, characterized in that: In the step eight, the semi-finished wiping paper that has been subjected to low-temperature drying treatment is input into a high-temperature oven for high-temperature wrinkling treatment. The set temperature of the high-temperature oven is 150-160°C, the high-temperature drying stroke is 2-4m, the transmission speed is 18-24cm / s, the high-temperature drying treatment is 12-20s, and the finished grid composite wrinkled wiping paper is obtained by winding.

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