Paper for daily use with improved water absorption and softness and provided with sine wave-shaped embossed patterns and application

Abstract

The invention belongs to the technical field of articles for daily use, and discloses paper for daily use with improved water absorption and softness and provided with sine wave-shaped embossed patterns, which comprises a body base layer, a first embossed surface layer and a second embossed surface layer, the first embossed surface layer, the body base layer and the second embossed surface layer are sequentially connected from top to bottom in the vertical direction, and the first embossed surface layer, the body base layer and the second embossed surface layer are all arranged in the horizontal direction. The sine wave-shaped knurling can enable liquid to be rapidly conveyed along a wave-shaped knurling area preferentially, and the water absorption rate is remarkably increased; the point-shaped embossed patterns improve the touch feeling and the water storage performance of the household paper. The dotted embossments are uniformly distributed on the surfaces of the second embossments, so that the overall performance of the paper is further enhanced. Due to the combination of the embossed structures, the water absorption and the softness of the household paper are improved, the overall use experience is improved, and meanwhile enough strength is kept.

Description

Technical Field

[0001] The invention belongs to the technical field of daily necessities, in particular to a daily necessities paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern and its application. Background Art

[0002] In modern society, tissue paper has become an indispensable necessity in people's daily lives, and its performance directly affects the user experience. Consumers' performance requirements for tissue paper are becoming increasingly diverse, especially in terms of water absorption, softness and strength. To meet these requirements, embossing technology is widely used in the production of tissue paper. Existing embossing processes include dot embossing, grid embossing, random pattern embossing, and line embossing. Although these processes have improved the performance of paper to a certain extent, they have also exposed many shortcomings.

[0003] Specifically, traditional embossing technology often has a negative impact on other properties when improving a certain performance indicator. For example, to improve the softness of paper, its strength may decrease; to enhance water absorption capacity, the water absorption rate may decrease. In addition, the embossing structure designed by the prior art is usually difficult to form an effective liquid transmission channel, resulting in low liquid absorption efficiency, leakage or uneven diffusion during use, thus affecting the user experience.

[0004] Therefore, developing a new embossing process that takes into account multiple performance indicators, which can not only optimize the water absorption rate and water absorption amount, but also achieve a balance between softness and strength, has become the key to solving current technical problems. The ideal embossing structure design should have efficient liquid conduction capabilities, while also having a soft touch and excellent mechanical properties to meet consumers' ever-increasing quality needs and bring new technical directions to the development of the industry. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a kind of household paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern and its application.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A household paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern, wherein the household paper body comprises a body base layer, a first embossed surface layer and a second embossed surface layer, wherein the first embossed surface layer, the body base layer and the second embossed surface layer are sequentially connected and arranged from top to bottom in a vertical direction, and the first embossed surface layer, the body base layer and the second embossed surface layer are all arranged in a horizontal direction;

[0008] The main body base layer is provided with at least one layer, and two or more layers of the main body base layer are connected and provided together layer by layer from top to bottom;

[0009] The first embossing surface layer comprises a first base layer, a first embossing group, a second embossing group and a sinusoidal wavy embossing group, the first base layer, the first embossing group, the second embossing group and the sinusoidal wavy embossing group are all arranged in the horizontal direction, the sinusoidal wavy embossing group extends along the length direction of the paper, the first embossing group, the second embossing group and the sinusoidal wavy embossing group are all connected and arranged on the upper surface of the first base layer; the first embossing group and the second embossing group each comprise a plurality of first embossing units evenly spaced and arranged in the horizontal direction, the first embossing unit of the first embossing group and the first embossing unit of the second embossing group are arranged crosswise in the longitudinal direction, and the horizontal distance between the plurality of first embossing units of the first embossing group is equal to the horizontal distance between the plurality of first embossing units of the second embossing group;

[0010] The sinusoidal wave embossing groups are arranged in parallel and spaced apart in the longitudinal direction, and the sinusoidal wave embossing groups include two sinusoidal wave embossing groups symmetrically arranged in the vertical direction, the first embossing group is arranged between the two sinusoidal wave embossing groups, and the horizontal center of the first embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossing groups; the second embossing group is arranged between the two adjacent sinusoidal wave embossing groups, and the horizontal center of the second embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossing groups;

[0011] The first embossing unit includes a plurality of dot embossings, the dot embossings are arranged in an array along a circumferential direction, and the plurality of dot embossings form a rhombus shape.

[0012] The embossed household paper according to claim 1 is characterized in that the upper surface of the first base layer below the sinusoidal wave embossing is recessed downward, and is recessed downward in the main base layer below the sinusoidal wave embossing, and the sinusoidal wave embossing is in the shape of a hollow and downwardly recessed groove.

[0013] Furthermore, the wavelength of the sinusoidal wave embossing is 8 to 15 mm, the amplitude is 2 to 5 mm, and the distance between adjacent sinusoidal wave embossings is 5 to 15 mm.

[0014] Furthermore, the total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 90% of the first embossed surface layer.

[0015] Furthermore, the total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 80% of the first embossed surface layer to reduce damage to the strength of the paper.

[0016] Furthermore, the dot-shaped embossing is arranged to be concave downwards along the upper surface of the first base layer, and is arranged to be concave downwards in the main base layer below the dot-shaped embossing, and the dot-shaped embossing is in the shape of a hollow and downwardly concave groove.

[0017] Furthermore, the second embossed surface layer includes a third base layer and a plurality of second embossing units, the plurality of second embossing units are evenly spaced and arranged at intervals, the second embossing units are arranged, the second embossing units are connected and arranged on the lower surface of the second base layer, the second embossing units include a plurality of point embossings, the plurality of point embossings form a second indentation on the second embossed surface layer, the second indentation is protruded upward from the lower surface of the second base layer, and is protruded upward in the main base layer below the linear embossing, and the longitudinal section of the second indentation is hollow and protrudes upward in the shape of a convex groove.

[0018] Furthermore, the first base layer may be a fiber tissue made of various cellulose fibers through a wet-laid or dry-laid process.

[0019] Furthermore, the circular linear embossing height of the first embossing pattern is 0.8-1.2 mm, the circular linear embossing diameter is 1.0-1.5 mm, the linear embossing height is 0.8-1.2 mm, the linear embossing diameter is 1.0-1.5 mm, and the density of all dot embossings in the first embossed surface layer and the second embossed surface layer is 20-60 dots / cm 2 The height of the dot embossing is 0.6-1.0 mm, the height of the sinusoidal wave embossing is 0.8-1.2 mm, and the embossing width is 1.0-1.5 mm.

[0020] Furthermore, all the dot embossings of the first embossed surface layer and the second embossed surface layer are truncated cone-shaped protrusions, the bottom diameter of the cone is 0.8-1.2 mm, and the top diameter is 0.6-1.0 mm; the top of the dot embossed cone is provided with a rounded corner, and the radius of the rounded corner is 0.1-0.3 mm.

[0021] The advantages and positive effects achieved by the present invention are:

[0022] 1. The present invention increases the porosity and surface area of ​​the paper and improves the water absorption capacity through the design of linear embossing and dot embossing, so that the paper can quickly absorb and diffuse liquid.

[0023] 2. The design of the embossing pattern and embossing depth of the present invention improves the softness of the paper while ensuring strength. The multi-layer body base structure and optimized embossing design effectively improve the longitudinal and transverse tensile index of the paper, as well as the wet tensile index, ensuring that the paper is not easy to tear during use and maintains stable strength performance.

[0024] 3. The linear embossing of the present invention not only beautifies the paper surface, but also guides the liquid to diffuse rapidly along the linear area. The tiny concave areas formed by the dot embossing provide abundant water storage space for the liquid, further improving the water absorption and moisture absorption efficiency of the paper.

[0025] 4. The sinusoidal wave embossing of the present invention extends along the length direction of the paper and is arranged in parallel in the width direction, forming an efficient liquid transmission channel; the dot embossing is evenly distributed in the area between adjacent sinusoidal wave embossing lines, increasing the water absorption capacity and softness of the paper. Sinusoidal wave embossing can make the liquid preferentially transported quickly along the wave embossing area, significantly improving the water absorption rate; the dot embossing improves the touch and water storage performance of the household paper. The second embossed surface is provided with evenly distributed dot embossing, which further enhances the overall performance of the paper. This combination of embossed structures not only improves the water absorption and softness of household paper, but also improves the overall user experience while maintaining sufficient strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a structural connection front view of the first embossed surface layer of the household paper of the present invention;

[0027] Figure 2 is a schematic rear view of the second embossed surface layer of the household paper of the present invention;

[0028] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structural connection at AA in the middle. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0030] The raw materials used in the present invention, unless otherwise specified, are conventional commercial products, the methods used in the present invention, unless otherwise specified, are conventional methods in the art, and the quality of each substance used in the present invention is conventional quality. The structures, connection relationships, etc. not described in detail in the present invention can be understood as conventional technical means in the art.

[0031] A tissue paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern, such as Figure 1 to Figure 2 As shown, the household paper 100 comprises a main body base layer 102, a first embossed surface layer 1001 and a second embossed surface layer 1002, the first embossed surface layer, the main body base layer and the second embossed surface layer are sequentially connected from top to bottom in a vertical direction, and the first embossed surface layer, the main body base layer and the second embossed surface layer are all arranged in a horizontal direction;

[0032] The main body base layer is provided as at least one layer, and two or more main body base layers are connected and provided together layer by layer from top to bottom; the provision of the main body base layer improves the bulk and paper strength of the household paper of the present invention;

[0033] The first embossing surface layer comprises a first base layer 101, a first embossing group 1005, a second embossing group 1006 and a sinusoidal wavy embossing group. The first base layer, the first embossing group, the second embossing group and the sinusoidal wavy embossing group are all arranged in the horizontal direction. The sinusoidal wavy embossing group extends along the length direction of the paper. The first embossing group, the second embossing group and the sinusoidal wavy embossing group are all connected and arranged on the upper surface of the first base layer; the first embossing group and the second embossing group both comprise a plurality of first embossing units 1003 uniformly and spaced in the horizontal direction. The first embossing units of the first embossing group and the first embossing units of the second embossing group are arranged crosswise in the longitudinal direction. The horizontal distance between two adjacent first embossing units of the first embossing group is equal to the horizontal distance between two adjacent first embossing units of the second embossing group.

[0034] The sinusoidal wave embossing group is arranged in parallel and spaced in the longitudinal direction. The sinusoidal wave embossing group includes two sinusoidal wave embossings 11 symmetrically arranged in the vertical direction. The first embossing group is arranged between the two sinusoidal wave embossings, and the horizontal center of the first embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossings; the second embossing group is arranged between the two adjacent sinusoidal wave embossing groups, and the horizontal center of the second embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossing groups; the design of the sinusoidal wave embossing group, the first embossing group and the second embossing group cooperates with each other to comprehensively improve the comprehensive performance of the daily paper. The sinusoidal wave embossing group is responsible for the rapid transmission of the liquid to avoid excessive retention, while the first embossing group and the second embossing group provide the paper with a soft touch while enhancing the water storage capacity. The coordinated design of the three not only meets the dual requirements of the water absorption rate and water absorption of the paper, but also takes into account the softness and strength of the paper, so that the comprehensive performance of the daily paper reaches a new height and meets the diverse needs of consumers.

[0035] The first embossing unit includes a plurality of dot embossings 12, which are arranged in an array along the circumferential direction, and the plurality of dot embossings form a rhombus shape; the sinusoidal wave embossing evenly distributes the first embossing unit, thereby achieving different tactile sensations and water storage performances, and the liquid is rapidly diffused and outflowed on the paper surface by arranging the sinusoidal linear embossings, and the dot embossing increases the surface area of ​​the paper, forming a plurality of small grooves, and these structures can better absorb and store water. At the same time, the embossed surface is rougher, which increases friction and adhesion, helps to absorb dust and grease, and thus improves cleaning efficiency.

[0036] The sinusoidal wave embossing of the present invention extends along the length direction of the paper and is arranged in parallel in the width direction, forming an efficient liquid transmission channel; the dot embossing is evenly distributed in the area between adjacent sinusoidal wave embossing lines, increasing the water absorption capacity and softness of the paper. The sinusoidal wave embossing can make the liquid preferentially transported quickly along the wave embossing area, significantly improving the water absorption rate; the dot embossing improves the touch and water storage performance of the household paper. The second embossed surface is provided with evenly distributed dot embossing, which further enhances the overall performance of the paper. This combination of embossed structures not only improves the water absorption and softness of the household paper, but also improves the overall user experience while maintaining sufficient strength.

[0037] The present invention uses capillary phenomena to absorb water from household paper. When liquid contacts paper, the pores between paper fibers form capillaries, and the liquid penetrates and diffuses along the fiber gaps under the action of these capillaries. The embossing process increases the porosity and surface area of ​​the paper, providing more contact points and penetration paths for the liquid. Specifically, the linear embossing in the embossing pattern can guide the liquid to diffuse rapidly on the paper surface, thereby increasing the water absorption rate. The point embossing provides a lot of water storage space for the liquid by forming many tiny concave areas, thereby increasing the water absorption of the paper.

[0038] The present invention increases the porosity and surface area of ​​the paper and improves the water absorption capacity through the design of linear embossing and dot embossing, so that the paper can quickly absorb and diffuse liquid. The design of the embossing pattern and embossing depth improves the softness of the paper while ensuring strength. The multi-layer body base structure and optimized embossing design effectively improve the longitudinal and transverse tensile indexes of the paper, as well as the wet tensile index, to ensure that the paper is not easy to tear during use and maintains stable strength performance. Linear embossing not only beautifies the surface of the paper, but also guides the liquid to diffuse rapidly along the linear area. The tiny concave area formed by the dot embossing provides abundant water storage space for the liquid, further improving the water absorption capacity and moisture absorption efficiency of the paper. The different area designs of the first embossing pattern and the second embossing pattern, as well as the combination of linear embossing and dot embossing, achieve the best balance between touch and water storage performance, and avoid paper hardening caused by excessive embossing.

[0039] In this embodiment, if Figure 3 As shown, the upper surface of the first base layer below the sinusoidal wave embossing is recessed downward, and the recessed portion is disposed in the main base layer below the sinusoidal wave embossing. The sinusoidal wave embossing is in the shape of a hollow and recessed groove 1310, which enhances the compactness of the paper through a greater embossing depth, thereby preventing the paper from dispersing during use.

[0040] In this embodiment, the wavelength of the sinusoidal wave embossing is 8-15 mm, the amplitude is 2-5 mm, and the distance between adjacent sinusoidal wave embossings is 5-15 mm.

[0041] The sinusoidal wave embossing design with a wavelength of 8 to 15 mm ensures that the flow path of the liquid on the paper surface is long enough and continuous, effectively guiding the liquid to spread evenly. The appropriate amplitude and sufficient distance provide sufficient water storage space for the paper, allowing the water to be quickly absorbed and stored. In addition, the moderate distance can effectively adjust the hydrophobicity, making it difficult for the liquid to overflow when spreading, thereby further optimizing the liquid management ability.

[0042] The parameter range design of wavelength, amplitude and spacing is highly flexible and can be adjusted according to specific application requirements. For example, by selecting a smaller wavelength and amplitude, the rapid absorption capacity of liquid can be further improved; while increasing the spacing is conducive to improving water storage performance, making the paper more suitable for different scenarios, such as absorbent paper towels, kitchen paper, etc.

[0043] In this embodiment, the total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 90% of the first embossed surface layer, thereby reducing damage to the strength of the paper.

[0044] Preferably, the total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 80% of the first embossed surface layer to reduce damage to the strength of the paper.

[0045] In this embodiment, the dot-shaped embossing is arranged to be concave downwards along the upper surface of the first base layer, and is arranged to be concave downwards in the main base layer below the dot-shaped embossing. The dot-shaped embossing is in the shape of a hollow and downwardly concave groove 1320.

[0046] In this embodiment, the second embossed surface layer includes a third base layer 103 and a plurality of second embossed units 1004, and the plurality of second embossed units are evenly spaced and arranged. The second embossed units are arranged to optimize water absorption performance, touch and softness at the same time, so as to obtain better quality daily paper. The second embossed units are connected and arranged on the lower surface of the second base layer. The second embossed units include a plurality of dot embossings, and the plurality of dot embossings form a second indentation 1410 on the second embossed surface layer. The second indentation is convexly arranged upward from the lower surface of the second base layer, and is convexly arranged upward in the main base layer below the linear embossing, and the longitudinal section of the second indentation is hollow and convexly arranged upward; the groove formed by the dot embossing increases the surface area of ​​the paper, provides more water storage space for water, and improves the hygroscopicity of the paper. At the same time, the paper is made to fluctuate in the thickness direction, which increases the bulk and softness of the paper.

[0047] In this embodiment, the first base layer 101 can be a fiber thin paper made of various cellulose fibers through a wet or dry process. In order to ensure the softness of the tissue paper, the original wood pulp fiber is selected as the raw material for the tissue paper. According to the fiber characteristics, the long fiber and short fiber are separated by a pulping process, and the amount of short fiber is increased, and its proportion can reach up to 85% of the overall quality of the paper, ensuring that the base paper has a high degree of softness and good tensile strength, ensuring a good water absorption speed, making the paper thick and tough, and improving the product cost performance.

[0048] Preferably, the circular linear embossing height of the first embossing pattern is 0.8-1.2mm, the circular linear embossing diameter is 1.0-1.5mm, the linear embossing height is 0.8-1.2mm, the linear embossing diameter is 1.0-1.5mm, the density of all point embossings in the first embossed surface layer and the second embossed surface layer is 20-60 dots / cm2, and the height of the point embossing is 0.6-1.0mm.

[0049] Preferably, the height of the sinusoidal wave embossing is 0.8-1.2 mm, and the embossing width is 1.0-1.5 mm;

[0050] Alternatively, the density of the dot embossing is 20 to 60 dots / cm 2 ; The height of the dot embossing is 0.6 to 1.0 mm.

[0051] Preferably, all the dot embossings of the first embossed surface layer and the second embossed surface layer are truncated cone-shaped protrusions, the bottom diameter of the cone is 0.8-1.2 mm, and the top diameter is 0.6-1.0 mm;

[0052] The top of the dot-shaped embossed cone is provided with a rounded corner, and the radius of the rounded corner is 0.1-0.3 mm.

[0053] Example 1

[0054] A tissue paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern, such as Figure 1 to Figure 2 As shown, the household paper 100 comprises a main body base layer 102, a first embossed surface layer 1001 and a second embossed surface layer 1002, the first embossed surface layer, the main body base layer and the second embossed surface layer are sequentially connected from top to bottom in a vertical direction, and the first embossed surface layer, the main body base layer and the second embossed surface layer are all arranged in a horizontal direction;

[0055] The main body base layer is provided as at least one layer, and two or more main body base layers are connected and provided together layer by layer from top to bottom; the provision of the main body base layer improves the bulk and paper strength of the household paper of the present invention;

[0056] The first embossing surface layer comprises a first base layer 101, a first embossing group 1005, a second embossing group 1006 and a sinusoidal wavy embossing group. The first base layer, the first embossing group, the second embossing group and the sinusoidal wavy embossing group are all arranged in the horizontal direction. The sinusoidal wavy embossing group extends along the length direction of the paper. The first embossing group, the second embossing group and the sinusoidal wavy embossing group are all connected and arranged on the upper surface of the first base layer; the first embossing group and the second embossing group both comprise a plurality of first embossing units 1003 uniformly and spaced in the horizontal direction. The first embossing units of the first embossing group and the first embossing units of the second embossing group are arranged crosswise in the longitudinal direction. The horizontal distance between two adjacent first embossing units of the first embossing group is equal to the horizontal distance between two adjacent first embossing units of the second embossing group.

[0057] The sinusoidal wave embossing group is arranged in parallel and spaced in the longitudinal direction. The sinusoidal wave embossing group includes two sinusoidal wave embossings 11 symmetrically arranged in the vertical direction. The first embossing group is arranged between the two sinusoidal wave embossings, and the horizontal center of the first embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossings; the second embossing group is arranged between the two adjacent sinusoidal wave embossing groups, and the horizontal center of the second embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossing groups; the design of the sinusoidal wave embossing group, the first embossing group and the second embossing group cooperates with each other to comprehensively improve the comprehensive performance of the daily paper. The sinusoidal wave embossing group is responsible for the rapid transmission of the liquid to avoid excessive retention, while the first embossing group and the second embossing group provide the paper with a soft touch while enhancing the water storage capacity. The coordinated design of the three not only meets the dual requirements of the water absorption rate and water absorption of the paper, but also takes into account the softness and strength of the paper, so that the comprehensive performance of the daily paper reaches a new height and meets the diverse needs of consumers.

[0058] The first embossing unit includes a plurality of dot embossings 12, which are arranged in an array along the circumferential direction, and the plurality of dot embossings form a rhombus shape; the sinusoidal wave embossing evenly distributes the first embossing unit, thereby achieving different tactile sensations and water storage performances, and the liquid is rapidly diffused and outflowed on the paper surface by arranging the sinusoidal linear embossings, and the dot embossing increases the surface area of ​​the paper, forming a plurality of small grooves, and these structures can better absorb and store water. At the same time, the embossed surface is rougher, which increases friction and adhesion, helps to absorb dust and grease, and thus improves cleaning efficiency.

[0059] The upper surface of the first base layer below the sinusoidal wave embossing is recessed downward, and the recessed surface is arranged in the main base layer below the sinusoidal wave embossing. The sinusoidal wave embossing is in the shape of a hollow and downwardly recessed groove 1310, which enhances the compactness of the paper through a larger embossing depth to prevent the paper from dispersing during use.

[0060] The wavelength of the sinusoidal wave embossing is 8 to 15 mm, the amplitude is 2 to 5 mm, and the distance between adjacent sinusoidal wave embossings is 5 to 15 mm.

[0061] The total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 80% of the first embossed surface layer to reduce damage to the strength of the paper.

[0062] The dot-shaped embossing is arranged to be concave downwards along the upper surface of the first base layer, and is arranged to be concave downwards in the main base layer below the dot-shaped embossing. The dot-shaped embossing is in the shape of a hollow and downwardly concave groove 1320.

[0063] The second embossed surface layer includes a third base layer 103 and a plurality of second embossed units 1004. The plurality of second embossed units are evenly spaced and arranged. The second embossed units are arranged to optimize water absorption performance, touch and softness at the same time, so as to obtain better quality daily paper. The second embossed units are connected and arranged on the lower surface of the second base layer. The second embossed units include a plurality of dot embossings. The plurality of dot embossings form a second indentation 1410 on the second embossed surface layer. The second indentation is arranged to protrude upward from the lower surface of the second base layer, and is arranged to protrude upward in the main base layer below the linear embossing. The longitudinal section of the second indentation is hollow and protrudes upward in the shape of a convex groove. The groove formed by the dot embossing increases the surface area of ​​the paper, provides more water storage space for water, and improves the hygroscopicity of the paper. At the same time, the paper is made to fluctuate in the thickness direction, which increases the bulk and softness of the paper.

[0064] In this embodiment 1, the material of the household paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern is a mixture of bleached coniferous kraft pulp and bleached broadleaved kraft pulp, both of which are commonly used wood pulp fiber raw materials in the field. Specific data are shown in Table 1. This paper is suitable for common usage scenarios of household paper, and can be used for facial tissue, handkerchief paper, toilet paper, etc.

[0065] Table 1 Comparison of the paper of the present invention and a certain household paper on the market with improved water absorption and softness and provided with a sinusoidal wave embossed pattern

[0066]

[0067] Note: Comparative Example 1 is a common household paper on the market with improved water absorption and softness and provided with a sinusoidal wave embossed pattern.

[0068] Comparative Example 2 deletes the sinusoidal wave embossing area based on the embossing pattern of Example 1, and the remaining conditions and steps are the same as those of Example 1.

[0069] Comparative Example 3 deletes the dot embossing area of ​​the first embossing unit based on the embossing pattern of Example 1, and the remaining conditions, steps, etc. are the same as those of Example 1.

[0070] From the data comparison in Table 1, it can be seen that Example 1 shows obvious advantages in terms of moisture absorption performance, softness and strength. Specifically, compared with Comparative Example 1, the water absorption capacity of Example 1 is increased by 15%, the water absorption rate is increased by 13.4%, and the strength performance is also improved.

[0071] The importance of the embossing pattern can be further confirmed by comparing with Comparative Examples 2 and 3: Comparative Example 2 reduces the sinusoidal embossing area, resulting in a significant decrease of 19.2% in water absorption rate compared with Example 1, and the softness and strength properties also decrease accordingly. Comparative Example 3 reduces the dot embossing area, resulting in a significant decrease of 18.1% in water absorption compared with Example 1, and the softness also decreases, but the strength properties remain basically unchanged. It can be seen that the embossing design scheme adopted in Example 1 can effectively balance and optimize the various performance indicators of household paper, and successfully achieve a comprehensive improvement in moisture absorption performance, softness and strength.

[0072] At the same time, by comparing Example 1, Comparative Example 2 and Comparative Example 3, it can be seen that the sinusoidal wave embossing and the first embossing unit of the household paper of the present invention have excellent synergistic effects, which can significantly synergistically improve the relevant properties of the household paper of the present invention, which fully proves the advantages and innovation of the present invention.

[0073] Although the embodiments of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments.

Claims

1. A tissue paper with improved water absorption and softness and provided with a sinusoidal wave embossed pattern, characterized in that: The tissue paper body comprises a body base layer, a first embossed surface layer and a second embossed surface layer, wherein the first embossed surface layer, the body base layer and the second embossed surface layer are sequentially connected from top to bottom in a vertical direction, and the first embossed surface layer, the body base layer and the second embossed surface layer are all arranged in a horizontal direction; The main body base layer is provided with at least one layer, and two or more layers of the main body base layer are connected and provided together layer by layer from top to bottom; The first embossing surface layer comprises a first base layer, a first embossing group, a second embossing group and a sinusoidal wavy embossing group, the first base layer, the first embossing group, the second embossing group and the sinusoidal wavy embossing group are all arranged in the horizontal direction, the sinusoidal wavy embossing group extends along the length direction of the paper, the first embossing group, the second embossing group and the sinusoidal wavy embossing group are all connected and arranged on the upper surface of the first base layer; the first embossing group and the second embossing group each comprise a plurality of first embossing units evenly spaced and arranged in the horizontal direction, the first embossing unit of the first embossing group and the first embossing unit of the second embossing group are arranged crosswise in the longitudinal direction, and the horizontal distance between the plurality of first embossing units of the first embossing group is equal to the horizontal distance between the plurality of first embossing units of the second embossing group; The sinusoidal wave embossing groups are arranged in parallel and spaced apart in the longitudinal direction, and the sinusoidal wave embossing groups include two sinusoidal wave embossing groups symmetrically arranged in the vertical direction, the first embossing group is arranged between the two sinusoidal wave embossing groups, and the horizontal center of the first embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossing groups; the second embossing group is arranged between the two adjacent sinusoidal wave embossing groups, and the horizontal center of the second embossing group is equal to the longitudinal distance between the two adjacent sinusoidal wave embossing groups; The first embossing unit includes a plurality of dot embossings, the dot embossings are arranged in an array along a circumferential direction, and the plurality of dot embossings form a rhombus shape.

2. The household paper according to claim 1, characterized in that: The upper surface of the first base layer below the sinusoidal wave embossing is recessed downwards, and is recessed downwards in the main base layer below the sinusoidal wave embossing. The sinusoidal wave embossing is in the shape of a hollow and recessed groove.

3. The household paper according to claim 1, characterized in that: The wavelength of the sinusoidal wave embossing is 8 to 15 mm, the amplitude is 2 to 5 mm, and the distance between adjacent sinusoidal wave embossings is 5 to 15 mm.

4. The household paper according to claim 1, characterized in that: The total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 90% of the first embossed surface layer.

5. The household paper according to claim 4, characterized in that: The total area of ​​the sinusoidal wave embossing group and the first embossing unit is less than or equal to 80% of the first embossed surface layer to reduce damage to the strength of the paper.

6. The household paper according to claim 1, characterized in that: The dot-shaped embossing is arranged to be concave downwards along the upper surface of the first base layer, and is arranged to be concave downwards in the main base layer below the dot-shaped embossing. The dot-shaped embossing is in the shape of a hollow and downwardly concave groove.

7. The household paper according to claim 1, characterized in that: The second embossed surface layer includes a third base layer and a plurality of second embossing units, and the plurality of second embossing units are evenly spaced and arranged at intervals. The second embossing units are arranged and connected on the lower surface of the second base layer. The second embossing units include a plurality of point embossings, and the plurality of point embossings form a second indentation on the second embossed surface layer. The second indentation is protruded upward from the lower surface of the second base layer, and is protruded upward in the main base layer below the linear embossing, and the longitudinal section of the second indentation is hollow and protrudes upward in the shape of a convex groove.

8. The household paper according to claim 1, characterized in that: The first base layer may be a fiber tissue made of various cellulose fibers through a wet-laid or dry-laid process.

9. The household paper according to claim 8, characterized in that: The circular linear embossing height of the first embossing pattern is 0.8-1.2 mm, the circular linear embossing diameter is 1.0-1.5 mm, the linear embossing height is 0.8-1.2 mm, the linear embossing diameter is 1.0-1.5 mm, and the density of all dot embossings in the first embossed surface layer and the second embossed surface layer is 20-60 dots / cm 2 The height of the dot embossing is 0.6-1.0 mm, the height of the sinusoidal wave embossing is 0.8-1.2 mm, and the embossing width is 1.0-1.5 mm.

10. The household paper according to claim 8, characterized in that: All the dot embossings of the first embossed surface layer and the second embossed surface layer are truncated cone-shaped protrusions, the bottom diameter of the cone is 0.8-1.2 mm, and the top diameter is 0.6-1.0 mm; the top of the dot embossed cone is provided with a rounded corner, and the radius of the rounded corner is 0.1-0.3 mm.

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