Embossed household paper with high softness and high strength

Abstract

The invention belongs to the technical field of articles for daily use, and discloses high-softness and high-strength embossed paper for daily use, the paper for daily use comprises a body base layer, a first embossed surface and a second embossed surface, the first embossed surface, the body base layer and the second embossed surface are sequentially connected from top to bottom in the vertical direction, the first embossed surface, the body base layer and the second embossed surface are all arranged in the horizontal direction. And the areas of the first embossed pattern and the second embossed pattern are different. The knurled household paper disclosed by the invention has moisture absorption, softness and strength performance at the same time. Through the design of the linear embossing and the dotted embossing, the porosity and the surface area of the paper are increased, the water absorption capacity is improved, and the paper can rapidly absorb and diffuse liquid.

Description

Technical Field

[0001] The invention belongs to the technical field of daily necessities, in particular to an embossed daily necessities paper with high softness and high strength. Background Art

[0002] With the improvement of living standards, people pay more and more attention to the quality of daily paper. The most important indicators of daily paper are hygroscopicity, softness and strength. The existing embossing cannot meet these three requirements well. The conventional embossing pattern is relatively simple, and the embossing depth and density are not set reasonably. Excessive embossing reduces the number of capillaries on the surface of the paper, which not only hinders the rapid penetration of water, but also may cause damage to the fiber structure, thereby weakening the hygroscopicity and strength of the paper. On the other hand, too high embossing density makes the fibers inside the paper too closely arranged, limiting the effective diffusion of water and reducing the softness of the paper. This series of problems directly leads to a slowdown in the diffusion rate of liquid inside the paper, which cannot absorb water quickly, and the strength of the paper is also greatly reduced. After absorbing water, such paper samples are very easy to tear, which seriously affects the consumer experience. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an embossed household paper with high softness and high strength.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An embossed household paper with high softness and high strength, characterized in that: the household paper comprises a main body base, a first embossed surface and a second embossed surface, the first embossed surface, the main body base and the second embossed surface are sequentially connected from top to bottom in a vertical direction, and the first embossed surface, the main body base and the second embossed surface are all arranged in a horizontal direction;

[0006] The main body base layer is provided with at least one layer, and two or more main body base layers are connected and provided together layer by layer from top to bottom;

[0007] The first embossed surface includes a first base layer and one or more first embossed groups, the first embossed group is arranged on the upper surface of the first base layer, the lower surface of the first base layer is connected and arranged on the upper surface of the main base layer, the first embossed group includes a first embossed unit, a first embossed pattern, a linear embossed pattern, and a second embossed pattern, the first embossed unit is arranged in a hexagonal shape, the first embossed pattern is arranged in 6 numbers, the first embossed pattern is arranged on the vertices of the hexagonal first embossed unit; the second embossed pattern is arranged on the center of the hexagonal first embossed unit;

[0008] The linear embossing includes a first linear embossing and a second linear embossing, two adjacent first embossing patterns are connected by the second linear embossing, and the center of the second embossing pattern and the first embossing pattern are connected by the first linear embossing;

[0009] The first embossed pattern and the second embossed pattern are arranged in different sizes;

[0010] Two or more first embossing groups are evenly spaced or continuously and staggeredly connected.

[0011] Furthermore, the linear embossing is recessed downward from the upper surface of the first base layer, and is recessed downward in the main base layer below the linear embossing. The linear embossing is in the shape of a hollow and downwardly recessed groove.

[0012] Furthermore, the linear embossing alone presents a form of dot indentation or linear indentation on the first embossing surface. Specifically, when the aspect ratio of the linear embossing is less than or equal to 5, it presents a dot indentation; when the aspect ratio of the linear embossing is greater than or equal to 5, it presents a linear indentation.

[0013] Furthermore, the first embossing pattern and the second embossing pattern both include first dot-shaped indentations, which are recessed downward from the upper surface of the first base layer and recessed downward in the main base layer below the linear embossing;

[0014] The first embossing pattern further includes a circular linear first indentation and a plurality of first dot-shaped indentations, wherein the plurality of first dot-shaped indentations are evenly spaced and arranged on the first base layer within the circular linear first indentation, the circular linear first indentation is recessed downward from the upper surface of the first base layer, and is recessed downward in the main base layer below the linear embossing, the circular linear first indentation is arranged in a circular shape, and the longitudinal section of the circular linear first indentation is arranged in a hollow and downwardly recessed groove shape;

[0015] The second embossing pattern includes a plurality of first dot-shaped indentations, which are evenly spaced and arranged at intervals, and the plurality of first dot-shaped indentations form a circular shape, and the area of ​​the second embossing pattern is greater than that of the first embossing pattern.

[0016] Furthermore, the area of ​​the first embossed pattern is 0.7-8 cm 2 , preferably 1-6cm 2 , the area of ​​the second embossed pattern is 1-10cm 2 , preferably 2-8cm 2 , at the same time, the area of ​​the first embossing pattern is 30%-70% of the area of ​​the second embossing pattern;

[0017] Further, the areas of the first embossing pattern, the second embossing pattern and the linear embossing are less than or equal to 70% of the area of ​​the first embossing unit, preferably less than or equal to 60%;

[0018] Alternatively, the first indentations of the first embossed surface are pressed together with the main base layer and the second embossed surface by a pressure of 0.1-0.6 MPa, preferably 0.2-0.4 MPa.

[0019] Further, the height of the circular linear first indentation of the first embossing pattern is 0.8-1.2 mm, the diameter of the circular linear first indentation is 1.0-1.5 mm, the height of the circular linear first indentation is 0.8-1.2 mm, the diameter of the circular linear first indentation is 1.0-1.5 mm, the density of all dot embossings on the first embossed surface and the second embossed surface is 20-60 dots / cm2, and the height of the dot embossing is 0.6-1.0 mm;

[0020] Alternatively, all the dot-shaped embossings on the first embossed surface and the second embossed surface are truncated cone protrusions, and the tops of the dot-shaped embossed cones are provided with rounded corners;

[0021] Alternatively, the bottom diameter of the dot-embossed truncated cone is 1.0-1.4 mm, the top diameter of the truncated cone is 0.8-1.2 mm, and the fillet radius of the top of the truncated cone is 0.1-0.5 mm.

[0022] Furthermore, the second embossed surface includes a second base layer and a plurality of second embossing units, the plurality of second embossing units are evenly spaced and arranged, the second base layer is connected and arranged on the lower surface of the main base layer, 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, the second indentation is protruded upward from the lower surface of the second base layer, and is protruded upward in the main base layer, and the longitudinal section of the second indentation is hollow and protrudes upward in the shape of a convex groove.

[0023] Furthermore, the first base layer is a fiber thin paper made of various cellulose fibers through a wet or dry process; in order to ensure the softness of household paper, virgin wood pulp fibers are selected as the raw material for making household paper. According to the fiber characteristics, long fibers and short fibers are pulped separately by a process, and the amount of short fibers is increased, and the proportion of short fibers reaches 85% of the overall mass of the paper.

[0024] The advantages and positive effects achieved by the present invention are:

[0025] 1. The embossed household paper of the present invention can take into account the hygroscopicity, softness and strength properties at the same time. Through the design of linear embossing and dot embossing, the porosity and surface area of ​​the paper are increased, the water absorption capacity is improved, and the paper can quickly absorb and diffuse liquid.

[0026] 2. The embossed household paper of the present invention comprises a main body, and the paper main body comprises a first embossed surface and a second embossed surface. The first embossed pattern and the second embossed pattern improve the touch and water storage performance of the household paper. The linear embossing can make the liquid preferentially transported along the linear embossed area, thereby increasing the water absorption rate and improving the use experience of the household paper.

[0027] 3. 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.

[0028] 4. 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.

[0029] 5. The different area designs of the first embossing pattern and the second embossing pattern of the present invention, as well as the combination of linear embossing and dot embossing, achieve an optimal balance between touch and water storage performance, and avoid paper hardening caused by excessive embossing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a structural connection front view of a first embossed surface of the embossed household paper of the present invention;

[0031] Figure 2 is a rear view schematic diagram of the second embossed surface of the embossed household paper of the present invention;

[0032] Figure 3 for Figure 1 Schematic diagram of the structural connection cross-section in the AA direction. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the embodiments. The following embodiments are descriptive rather than restrictive, and the protection scope of the present invention cannot be limited by the following embodiments.

[0034] The various experimental operations involved in the specific embodiments are all routine techniques in the art. For parts not specially annotated in this document, ordinary technicians in the art can implement them by referring to various commonly used reference books, scientific and technological literature or related instructions, manuals, etc. before the filing date of this invention.

[0035] An embossed tissue paper with high softness and high strength properties, such as Figures 1 to 3As shown, the household paper 100 comprises a main body base 102, a first embossed surface 1001 and a second embossed surface 1002, the first embossed surface, the main body base and the second embossed surface are sequentially connected from top to bottom along the vertical direction, and the first embossed surface, the main body base and the second embossed surface are all arranged in the horizontal direction;

[0036] The main body base layer is at least one layer, and two or more layers of the main body base layers are connected and arranged together from top to bottom; the arrangement of the main body base layer improves the bulk and paper strength of the household paper of the present invention;

[0037] The first embossed surface includes a first base layer 101 and one or more first embossing groups, the first embossing group is arranged on the upper surface of the first base layer, the lower surface of the first base layer is connected and arranged on the upper surface of the main base layer, the first embossing group includes a first embossing unit 1003, a first embossing pattern 11, a linear embossing and a second embossing pattern 12, the first embossing unit is arranged in a hexagonal shape, the first embossing pattern is arranged in 6 numbers, the first embossing pattern is arranged at the vertex of the hexagonal first embossing unit; the second embossing pattern is arranged at the center of the hexagonal first embossing unit, so as to improve the hydrophobicity of the paper;

[0038] The linear embossing includes a first linear embossing 13 and a second linear embossing 14, two adjacent first embossing patterns are connected by the second linear embossing, and the center of the second embossing pattern and the first embossing pattern are connected by the first linear embossing, so as to improve the flexibility of the paper;

[0039] The areas of the first embossed pattern and the second embossed pattern are set to different sizes, so as to achieve different tactile sensations and water storage performances;

[0040] Two or more first embossing groups are evenly spaced or continuously interlaced and connected. For example, if the first embossing groups are arranged in a plurality and are in a continuous state, and adjacent first embossing units share the same first embossing pattern.

[0041] The household paper comprises a main body base, a first embossed surface and a second embossed surface. The first linear embossing evenly divides the hexagon and the second embossed pattern into six equal parts. The linear embossing is arranged to achieve rapid diffusion of liquid on the paper surface. The first linear embossing connects the center of the hexagon and the first embossed pattern, and the linear embossing connects adjacent first embossed patterns.

[0042] 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.

[0043] 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.

[0044] In this embodiment, the linear embossing is recessed downward from the upper surface of the first base layer, and is recessed in the main base layer below the linear embossing. The linear embossing is in the shape of a hollow and downwardly recessed groove 1004. The larger embossing depth enhances the compactness of the paper and prevents the paper from dispersing during use. Preferably, the linear embossing can be in the form of a dot indentation or a linear indentation presented alone on the first embossing surface. Specifically, when the aspect ratio of the linear embossing is less than or equal to 5, it appears as a dot indentation, making the surface of the paper uneven, increasing the bulk of the paper, and further enhancing its water absorption and softness. When the aspect ratio of the linear embossing is greater than or equal to 5, it appears as a linear indentation, highlighting the embossing pattern, enhancing the visual effect of the embossing pattern, and making the paper more ornamental.

[0045] In this embodiment, the first embossing pattern and the second embossing pattern both include a first dot-shaped indentation 1005, which is recessed downward from the upper surface of the first base layer and is recessed downward in the main base layer below the linear embossing.

[0046] The first embossing pattern further includes a circular linear first indentation 1006 and a plurality of first dot-shaped indentations, wherein the plurality of first dot-shaped indentations are evenly spaced and arranged on the first base layer within the circular linear first indentation, the circular linear first indentation is arranged to be concave downward from the upper surface of the first base layer, and is arranged to be concave downward in the main base layer below the linear embossing, the circular linear first indentation is arranged in a circular shape, and the longitudinal section of the circular linear first indentation is arranged to be hollow and concave downward in a groove shape;

[0047] The second embossing pattern includes a plurality of first point-shaped indentations, which are evenly spaced and arranged at intervals, and the plurality of first point-shaped indentations form a circular shape, and the area of ​​the second embossing pattern is larger than the area of ​​the first embossing pattern. Such uneven embossing can avoid hardening of paper caused by excessive embossing while maintaining softness, thereby increasing a certain level of tactile feel and enriching the user experience.

[0048] Preferably, the area of ​​the first embossed pattern is 0.7-8 cm 2 , preferably 1-6cm 2 , the area of ​​the second embossed pattern is 1-10cm 2 , preferably 2-8cm 2 At the same time, the area of ​​the first embossed pattern is 30%-70% of the area of ​​the second embossed pattern. This uneven embossing can avoid paper hardening caused by excessive embossing while maintaining softness, increase a certain level of touch, and enrich the use experience;

[0049] Preferably, the areas of the first embossing pattern, the second embossing pattern and the linear embossing are less than or equal to 70% of the area of ​​the first embossing unit, preferably less than or equal to 60%, so as to reduce damage to the strength of the paper.

[0050] In this embodiment, the second embossed surface includes a second base layer 103 and a plurality of second embossed units 151, 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 base layer is connected and arranged on the lower surface of the main base layer, and 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 (not numbered in the figure), and the plurality of dot embossings form a second indentation 1510 on the second embossed surface. The second indentation is convexly arranged upward from the lower surface of the second base layer, and is convexly arranged in the main base layer, and the longitudinal section of the second indentation is hollow and convexly convexly grooved upwardly; 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.

[0051] In this embodiment, the first indentation of the first embossed surface is pressed together with the main body base and the second embossed surface by a pressure of 0.1-0.6 MPa, preferably 0.2-0.4 MPa, so that the first embossed surface is connected to the second embossed surface at the edge of the main body base, ensuring the connection stability of the household paper body.

[0052] In this embodiment, the first base layer can be made of various cellulose fibers through a wet or dry process to make fiber thin paper. In order to ensure the softness of household paper, virgin wood pulp fibers are selected as the raw material for making household paper. According to the fiber characteristics, long fibers and short fibers are separated by pulping process, and the amount of short fibers is increased, and the proportion can reach up to 85% of the overall quality of the paper, ensuring that the base paper has a high softness and good tensile strength, ensuring a good water absorption speed, making the paper thick and tough, and improving the product cost performance.

[0053] Preferably, the height of the circular linear first indentation of the first embossing pattern is 0.8-1.2 mm, the diameter of the circular linear first indentation is 1.0-1.5 mm, the density of all the point embossings on the first embossing surface and the second embossing surface is 20-60 dots / cm2, and the height of the point embossing is 0.6-1.0 mm.

[0054] Preferably, all the dot-shaped embossings on the first embossed surface and the second embossed surface are truncated cone protrusions, and the tops of the dot-shaped embossed cones are provided with rounded corners.

[0055] Preferably, the bottom diameter of the dot-embossed cone is 1.0-1.4 mm, the top diameter of the cone is 0.8-1.2 mm, and the fillet radius of the top of the cone is 0.1-0.5 mm.

[0056] The material of the embossed household paper with high softness and high strength is a mixture of bleached coniferous kraft pulp and bleached hardwood kraft pulp, both of which are commonly used wood pulp fiber raw materials in the field. The paper is suitable for common usage scenarios of household paper, and can be used for facial tissue, handkerchief paper, toilet paper, etc.

[0057] Embodiment 1:

[0058] An embossed household paper with high softness and high strength. Embodiment 1 is provided with three base layers, namely a main base layer, a first embossed surface and a second embossed surface, and is made by mixing bleached coniferous kraft pulp and bleached broadleaf kraft pulp.

[0059] Specifically:

[0060] An embossed tissue paper with high softness and high strength properties, such as Figures 1 to 3As shown, the household paper 100 comprises a main body base 102, a first embossed surface 1001 and a second embossed surface 1002, the first embossed surface, the main body base and the second embossed surface are sequentially connected from top to bottom along the vertical direction, and the first embossed surface, the main body base and the second embossed surface are all arranged in the horizontal direction;

[0061] The main body base layer is arranged as one layer, and two or more main body base layers are connected and arranged together layer by layer from top to bottom; the arrangement of the main body base layer improves the bulk and paper strength of the household paper of the present invention;

[0062] The first embossed surface includes a first base layer 101 and a plurality of first embossing groups, the first embossing group is arranged on the upper surface of the first base layer, the lower surface of the first base layer is connected and arranged on the upper surface of the main base layer, the first embossing group includes a first embossing unit 1003, a first embossing pattern 11, a linear embossing and a second embossing pattern 12, the first embossing unit is arranged in a hexagonal shape, the first embossing pattern is arranged in 6 pieces, the first embossing pattern is arranged on the vertex of the hexagonal first embossing unit; the second embossing pattern is arranged on the center of the hexagonal first embossing unit, so as to improve the hydrophobicity of the paper;

[0063] The linear embossing includes a first linear embossing 13 and a second linear embossing 14, two adjacent first embossing patterns are connected by the second linear embossing, and the center of the second embossing pattern and the first embossing pattern are connected by the first linear embossing, so as to improve the flexibility of the paper;

[0064] The areas of the first embossed pattern and the second embossed pattern are set to different sizes, so as to achieve different tactile sensations and water storage performances;

[0065] Two or more first embossing groups are evenly spaced or continuously and staggeredly connected.

[0066] The linear embossing is recessed downward from the upper surface of the first base layer, and is recessed downward in the main base layer below the linear embossing. The linear embossing is in the shape of a hollow and downwardly recessed groove 1004. The larger embossing depth enhances the compactness of the paper and prevents the paper from dispersing during use. Preferably, the linear embossing can be in the form of a dot indentation or a linear indentation when presented alone on the first embossing surface. Specifically, when the aspect ratio of the linear embossing is less than or equal to 5, it appears as a dot indentation, making the surface of the paper uneven, increasing the bulk of the paper, and further enhancing its water absorption and softness. When the aspect ratio of the linear embossing is greater than or equal to 5, it appears as a linear indentation, highlighting the embossing pattern, enhancing the visual effect of the embossing pattern, and making the paper more ornamental.

[0067] The first embossing pattern and the second embossing pattern both include a first dot-shaped indentation 1005, which is recessed downward from the upper surface of the first base layer and is recessed downward in the main base layer below the linear embossing;

[0068] The first embossing pattern further includes a circular linear first indentation 1006 and a plurality of first dot-shaped indentations, wherein the plurality of first dot-shaped indentations are evenly spaced and arranged on the first base layer within the circular linear first indentation, the circular linear first indentation is arranged to be concave downward from the upper surface of the first base layer, and is arranged to be concave downward in the main base layer below the linear embossing, the circular linear first indentation is arranged in a circular shape, and the longitudinal section of the circular linear first indentation is arranged to be hollow and concave downward in a groove shape;

[0069] The second embossing pattern includes a plurality of first point-shaped indentations, which are evenly spaced and arranged at intervals, and the plurality of first point-shaped indentations form a circular shape, and the area of ​​the second embossing pattern is larger than the area of ​​the first embossing pattern. Such uneven embossing can avoid hardening of paper caused by excessive embossing while maintaining softness, thereby increasing a certain level of tactile feel and enriching the user experience.

[0070] The area of ​​the first embossed pattern is 1-6 cm 2 , the area of ​​the second embossed pattern is 2-8cm 2 At the same time, the area of ​​the first embossed pattern is 30%-70% of the area of ​​the second embossed pattern. This uneven embossing can avoid paper hardening caused by excessive embossing while maintaining softness, increase a certain level of touch, and enrich the use experience;

[0071] The areas of the first embossing pattern, the second embossing pattern and the linear embossing are less than or equal to 60% of the area of ​​the first embossing unit to reduce damage to the strength of the paper.

[0072] The second embossed surface includes a second base layer 103 and a plurality of second embossed units 151, the plurality of second embossed units are evenly spaced and arranged, and the second embossed units are arranged to simultaneously optimize water absorption performance, touch and softness, and obtain better quality daily paper, the second base layer is connected and arranged on the lower surface of the main base layer, 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 (not numbered in the figure), and the plurality of dot embossings form a second indentation 1510 on the second embossed surface, 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, and the longitudinal section of the second indentation is hollow and convexly grooved 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, increasing the bulk and softness of the paper.

[0073] The first indentation of the first embossed surface is pressed together with the main body base and the second embossed surface by a pressure of 0.2-0.4 MPa, thereby connecting the first embossed surface and the second embossed surface at the edge of the main body base to ensure the connection stability of the household paper body.

[0074] The height of the circular linear first indentation of the first embossing pattern is 0.8-1.2 mm, the diameter of the circular linear first indentation is 1.0-1.5 mm, the density of all the dot embossings on the first embossing surface and the second embossing surface is 20-60 dots / cm2, and the height of the dot embossing is 0.6-1.0 mm.

[0075] All the dot-shaped embossings on the first embossing surface and the second embossing surface are truncated cone protrusions, and the tops of the dot-shaped embossed cones are provided with rounded corners.

[0076] The bottom diameter of the dot-shaped embossed cone is 1.0-1.4 mm, the top diameter of the cone is 0.8-1.2 mm, and the fillet radius of the top of the cone is 0.1-0.5 mm.

[0077] Comparative Example 1 is a common embossed household paper on the market.

[0078] Comparative Example 2 reduces the area of ​​the first embossing pattern and the second embossing pattern by 30% compared with Example 1. The remaining experimental conditions of Comparative Example 2 are the same as those of Example 1.

[0079] Comparative Example 3 increases the area of ​​the first embossing pattern and the second embossing pattern by 30% compared with Example 1. The remaining experimental conditions of Comparative Example 3 are the same as those of Example 1.

[0080] The relevant detection of the present invention is shown in Table 1:

[0081] Table 1:

[0082]

[0083] It can be seen from the above table that the hygroscopicity, softness and strength of Example 1 are higher than those of a certain embossed household paper on the market, the water absorption is increased by 9.74%, the water absorption rate is increased by 9.09%, the softness is improved by 17%, and the strength of Example 1 is also significantly better than that of Comparative Example 1.

[0084] After the embossing area in Comparative Example 2 was reduced, its hygroscopicity and softness were lower than those in Example 1, and its strength remained basically unchanged. After the embossing area in Comparative Example 3 was increased, its water absorption was slightly higher than that in Example 1, but its softness and tensile strength were lower than those in Example 1. It can be seen that the embossed household paper obtained in Example 1 of the present invention can take into account hygroscopicity, softness and strength at the same time, thus improving the consumer experience. It can also be seen that the area of ​​the first embossed pattern of the embossed household paper of the present invention is 1-6 cm 2 The area of ​​the second embossed pattern is 2-8cm 2 There is a synergistic effect between the two, and the related indicators such as the hygroscopicity, softness and strength of the embossed household paper of the present invention can be synergistically improved.

[0085] In Comparative Example 4, the height of the dot embossing in the first embossed surface is reduced by 30% compared with that in Example 1. The other experimental conditions of Comparative Example 4 are the same as those of Example 1.

[0086] Comparative Example 5 increases the height of the dot embossing on the first embossed surface by 30% compared with Example 1. The other experimental conditions of Comparative Example 5 are the same as those of Example 1.

[0087] The relevant detection of the present invention is shown in Table 2:

[0088] Table 2:

[0089] Paper related performance (same test paper area) Example 1 Comparative Example 4 Comparative Example 5 Water absorption (g / g) 4.472 3.75 3.527 Water absorption rate (mm / 100s) 45.6 40.2 37.8 Softness (TS7) 29.5 37.2 35.4 Longitudinal tensile index (N·m / g) 57.9 59.8 47.9 Transverse tensile index (N·m / g) 28.02 29.2 23.7 Longitudinal wet tensile index (N·m / g) 5.38 5.69 4.62 Transverse wet tensile index (N·m / g) 2.09 2.23 1.84

[0090] As can be seen from Table 2, the hygroscopic properties of Example 1 are higher than those of Comparative Examples 4 and 5. The water absorption of Example 1 is increased by 19.2% and 26.7% compared with Comparative Examples 4 and 5, and the water absorption rate is increased by 13.4% and 20.6%. In terms of softness and strength, Comparative Example 4 is slightly higher than Example 1 in tensile strength, but its softness is much lower than Example 1; Comparative Example 5 is lower than Example 1 in softness and strength. It can be seen that the embossed household paper obtained in Example 1 significantly enhances the hygroscopicity and softness of the paper, while effectively reducing the effect of the embossing process on the strength of the paper. At the same time, by comparing Example 1 and Comparative Examples 2-5, it can be seen that the area of ​​the first embossed pattern of the embossed household paper of the present invention is 1-6cm 2 / The area of ​​the second embossed pattern is 2-8cm 2 The height of the dot embossing on the first embossed surface is 0.6-1.0 mm, which has a synergistic effect and can synergistically improve the relevant indicators of the embossed household paper of the present invention, such as the hygroscopicity, softness and strength performance.

[0091] 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. An embossed household paper with high softness and high strength, characterized in that: The household paper comprises a main body base, a first embossed surface and a second embossed surface, wherein the first embossed surface, the main body base and the second embossed surface are sequentially connected from top to bottom in a vertical direction, and the first embossed surface, the main body base and the second embossed surface are all arranged in a horizontal direction; The main body base layer is provided with 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 first embossed surface includes a first base layer and one or more first embossed groups, the first embossed group is arranged on the upper surface of the first base layer, the lower surface of the first base layer is connected and arranged on the upper surface of the main base layer, the first embossed group includes a first embossed unit, a first embossed pattern, a linear embossed pattern, and a second embossed pattern, the first embossed unit is arranged in a hexagonal shape, the first embossed pattern is arranged in 6 numbers, the first embossed pattern is arranged on the vertices of the hexagonal first embossed unit; the second embossed pattern is arranged on the center of the hexagonal first embossed unit; The linear embossing includes a first linear embossing and a second linear embossing, two adjacent first embossing patterns are connected by the second linear embossing, and the center of the second embossing pattern and the first embossing pattern are connected by the first linear embossing; The first embossed pattern and the second embossed pattern are arranged in different sizes; Two or more first embossing groups are evenly spaced or continuously and staggeredly connected.

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

3. The embossed household paper according to claim 2, characterized in that: The linear embossing is presented alone on the first embossing surface in the form of dot indentations or linear indentations. Specifically, when the aspect ratio of the linear embossing is less than or equal to 5, it appears as a dot indentation; when the aspect ratio of the linear embossing is greater than or equal to 5, it appears as a linear indentation.

4. The embossed household paper according to claim 1, characterized in that: The first embossing pattern and the second embossing pattern both include first dot-shaped indentations, which are recessed downward from the upper surface of the first base layer and recessed downward in the main base layer below the linear embossing; The first embossing pattern further includes a circular linear first indentation and a plurality of first dot-shaped indentations, wherein the plurality of first dot-shaped indentations are evenly spaced and arranged on the first base layer within the circular linear first indentation, the circular linear first indentation is recessed downward from the upper surface of the first base layer, and is recessed downward in the main base layer below the linear embossing, the circular linear first indentation is arranged in a circular shape, and the longitudinal section of the circular linear first indentation is arranged in a hollow and downwardly recessed groove shape; The second embossing pattern includes a plurality of first dot-shaped indentations, which are evenly spaced and arranged at intervals, and the plurality of first dot-shaped indentations form a circular shape, and the area of ​​the second embossing pattern is greater than that of the first embossing pattern.

5. The embossed household paper according to claim 4, characterized in that: The area of ​​the first embossed pattern is 0.7-8 cm 2 , preferably 1-6cm 2 , the area of ​​the second embossed pattern is 1-10cm 2 , preferably 2-8cm 2 At the same time, the area of ​​the first embossing pattern is 30%-70% of the area of ​​the second embossing pattern.

6. The embossed household paper according to claim 4, characterized in that: The areas of the first embossing pattern, the second embossing pattern and the linear embossing are less than or equal to 70% of the area of ​​the first embossing unit, preferably less than or equal to 60%; Alternatively, the first indentations of the first embossed surface are pressed together with the main base layer and the second embossed surface by a pressure of 0.1-0.6 MPa, preferably 0.2-0.4 MPa.

7. The embossed household paper according to claim 4, characterized in that: The height of the circular linear first indentation of the first embossing pattern is 0.8-1.2 mm, the diameter of the circular linear first indentation is 1.0-1.5 mm, the height of the circular linear first indentation is 0.8-1.2 mm, the diameter of the circular linear first indentation is 1.0-1.5 mm, the density of all dot embossings on the first embossing surface and the second embossing surface is 20-60 dots / cm2, and the height of the dot embossing is 0.6-1.0 mm; Alternatively, all the dot-shaped embossings on the first embossed surface and the second embossed surface are truncated cone protrusions, and the tops of the dot-shaped embossed cones are provided with rounded corners; Alternatively, the bottom diameter of the dot-embossed truncated cone is 1.0-1.4 mm, the top diameter of the truncated cone is 0.8-1.2 mm, and the fillet radius of the top of the truncated cone is 0.1-0.5 mm.

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

9. The embossed household paper according to any one of claims 1 to 8, characterized in that: The first base layer is a fiber thin paper made of various cellulose fibers through a wet or dry process. In order to ensure the softness of household paper, virgin wood pulp fibers are selected as the raw material for making household paper. According to the fiber characteristics, long fibers and short fibers are pulped separately, and the amount of short fibers is increased, and the proportion reaches 85% of the overall mass of the paper.

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