A wettable sanitary tissue paper

Abstract

The utility model discloses a wettable toilet paper convenient to use, including the laminated structure, still including the anti -tear layer, the laminated structure is three -layer structure, and the middle layer of laminated structure is equipped with the notched, and the inside of notched is equipped with the anti -tear layer, and the right -hand member of laminated structure is equipped with the easy mechanism of unfolding, the utility model discloses through the material science and technology of breakthrough and structure design, has improved the practicality of product significantly, and its core lies in the high molecular functional reinforcing layer of key position implantation, and this special processing layer makes product have excellent waterproof characteristic, can still keep the complete structure after meeting water, thoroughly solved the difficult problem of traditional toilet paper wetting and easy to break, and the synergistic effect is realized through accurate proportioning to multilayer composite structure, and the high -density fiber reinforcing technique is used to base layer, and the middle functional layer is fused into nanometer waterproof factor, and the surface layer is through the flexible processing, and three -fold protection makes product still can maintain excellent tear resistance and dimensional stability under the humid environment.

Description

Technical Field

[0001] This utility model relates to the field of toilet paper technology, and in particular to a water-resistant toilet paper that is easy to use. Background Technology

[0002] Wettable toilet paper is a soft, absorbent paper towel made from virgin wood pulp or cotton fibers. It contains a wet-strength agent to enhance its resilience, allowing it to remain intact even when wet. It can be used as a substitute for wet wipes. Its pH value is close to neutral, and it contains no alcohol, fragrances, or other irritating ingredients, making it suitable for baby cleaning, facial makeup removal, or sensitive skin care. Compared to regular toilet paper, it is thicker, more absorbent, and can be used both wet and dry. It is biodegradable and more environmentally friendly than traditional wet wipes. Commonly used in homes, for mothers and babies, and when out and about, it combines convenience with gentleness.

[0003] Currently available wettable toilet paper has a significant defect after contact with water: the fiber structure strength in the central wiping area decreases significantly, making it prone to tearing during use. This problem mainly stems from improper material ratios and manufacturing defects. When the paper towel absorbs water, the hydrogen bonds between the internal fibers weaken due to the water's presence, and the arrangement of the cellulose molecular chains becomes loose. This is especially true in the central wiping area where stress is concentrated, making the fiber network more susceptible to damage. In addition, some products excessively reduce the proportion of long fibers or add too many chemical additives other than wet strength agents in pursuit of a soft touch, further weakening the material's wet strength. Uneven embossing depth or improper drying temperature control during the production process can also lead to inconsistent fiber distribution density, creating localized weak points. This structural defect not only causes tearing during use, affecting cleaning effectiveness and user experience, but may also lead to microbial transfer due to paper towel breakage, increasing the risk of cross-infection.

[0004] Therefore, in response to the problem that existing water-resistant toilet paper has low strength in the central wiping area after being wetted and is prone to tearing during use, a water-resistant toilet paper that is easy to use can be designed. Utility Model Content

[0005] To overcome the problem that existing wettable toilet paper has low strength in the central wiping area after being wetted, making it prone to tearing during use.

[0006] The technical solution of this utility model is: a water-resistant toilet paper that is easy to use, including a layered structure; it also includes a tear-resistant layer, the layered structure is a three-layer structure, the middle layer of the layered structure is provided with a groove, the inside of the groove is provided with a tear-resistant layer, and the right end of the layered structure is provided with an easy unfolding mechanism.

[0007] Preferably, the tear-resistant layer enhances the wet strength of the central wiping area of ​​the laminated structure. The polymer fiber web embedding technology forms a three-dimensional support skeleton between the pulp layers. When exposed to water, the fibers swell and generate hydrogen bond enhancement effect, which improves the wet tensile strength. The easy unfolding of the single structure ensures operability when wet, thereby solving the problem that the existing wet-resistant toilet paper has low strength in the central wiping area after getting wet and is prone to tearing during use.

[0008] Preferably, the tear-resistant layer has a mesh-reinforced structure.

[0009] Preferably, the easy-to-unfold mechanism includes a sheet component and an anti-slip component. The sheet component is for the user to pinch, and the anti-slip component is used to improve the anti-slip performance of the sheet component.

[0010] Preferably, the sheet assembly includes a wing-shaped unfolding sheet disposed on the right side of the laminated structure, and a pressure-sensitive adhesive layer is adhered to the unfolding sheet.

[0011] Preferably, the anti-slip component includes anti-slip texture; the outer surface of the unfolded sheet is provided with anti-slip texture.

[0012] Preferably, the stacked structure has a pre-folding line along its length, and the pre-folding line is perpendicular to the unfolding direction of the unfolded sheet.

[0013] The beneficial effects of this utility model are:

[0014] By setting functional reinforcement layers in key areas, the defects of traditional products that are prone to cracking when exposed to water are effectively overcome. The uniquely designed operating parts, combined with hydrophobic treatment technology, ensure that the product can be easily unfolded and firmly pasted even with wet hands, greatly improving the ease of operation and cleaning efficiency. The synergistic effect of multiple structures extends the product's service life, achieving a comprehensive optimization effect of being strong and not easily broken in wet environments, easy to operate with one hand, and durable and stable adhesion. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0016] Figure 2 The diagram shown is a three-dimensional structural schematic of the tear-resistant layer of this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of the unfolded sheet of this utility model;

[0018] Figure 4 The diagram shown is a three-dimensional structural illustration of the layered structure of this utility model.

[0019] Figure 5 The diagram shown is an exploded three-dimensional structural diagram of the layered structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Layered structure; 2. Groove; 3. Tear-resistant layer; 41. Unfolding sheet; 42. Pressure-sensitive adhesive layer; 43. Anti-slip texture; 5. Pre-fold line. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-5 This utility model provides an embodiment of a water-resistant toilet paper that is easy to use, including a laminated structure 1 and a tear-resistant layer 3. The laminated structure 1 is a three-layer structure. The middle layer of the laminated structure 1 is provided with a groove 2, and the inside of the groove 2 is provided with a tear-resistant layer 3. The right end of the laminated structure 1 is provided with an easy-to-unfold mechanism. By setting the tear-resistant layer 3, the strength of the central wiping area of ​​the laminated structure 1 is enhanced after wetting. A three-dimensional support skeleton is formed between the pulp layers using polymer fiber web embedding technology. When exposed to water, the fibers swell and generate a hydrogen bond enhancement effect, thereby improving the wet tensile strength.

[0023] Please see Figures 1-3In this embodiment, the easy-to-unfold mechanism includes a sheet assembly and an anti-slip assembly. The sheet assembly is for the user to pinch, and the anti-slip assembly is used to improve the anti-slip performance of the sheet assembly. The sheet assembly includes an unfolding sheet 41 disposed on the right side of the stacked structure 1. The unfolding sheet 41 is wing-shaped, and a pressure-sensitive adhesive layer 42 is adhered to the unfolding sheet 41. The anti-slip assembly includes anti-slip grooves 43 formed on the outer side of the unfolding sheet 41. The anti-slip grooves 43 are multi-directional interlaced grooves. The pressure-sensitive adhesive layer 42 uses water-resistant acrylic adhesive as the base material. By adding nano-silica, its cohesive force and mechanical properties are enhanced, ensuring that the adhesive is not easily broken or deformed under force. The adhesive layer is applied to the inner side of the end of the unfolding sheet 41 in the form of discontinuous adhesive dots. This localized adhesive design can provide sufficient adhesion and avoid the problem of peeling caused by water absorption and swelling in a humid environment, which is a problem of traditional full-coat adhesive layers. The carboxyl groups in the adhesive can form stable intermolecular forces with water molecules in the environment. To ensure reliable use and maintain good peel strength even under high humidity conditions, the unfolding sheet 41 is made of wet-strength paper and polyolefin film. The substrate itself has excellent water resistance and flexibility, which can adapt to the use requirements of different environments. Its surface is formed with anti-slip texture 43 by hot pressing. The texture is designed as a multi-directional interlaced groove structure, forming an irregular microscopic surface morphology, which effectively increases the friction resistance when in contact with fingers and prevents slippage caused by wetness or uneven force during operation. The overall structure, through the synergistic effect of the water-resistant bonding performance of the pressure-sensitive adhesive layer 42 and the anti-slip texture 43 on the surface of the unfolding sheet 41, ensures stable functionality in humid or high-humidity environments. The discontinuous distribution of adhesive dots reduces the volume change of the adhesive layer after water absorption, while the composite substrate and surface texture design further improve the durability and ease of operation of the product, making it suitable for application scenarios with high requirements for reliability and environmental adaptability.

[0024] Please see Figures 1-5In this embodiment, the tear-resistant layer 3 is a mesh-reinforced structure. Pre-fold lines 5 are provided along the length of the laminated structure 1, perpendicular to the unfolding direction of the unfolded sheet 41. By setting the tear-resistant layer 3, its embedded mesh structure uses bicomponent composite fibers as the core material, forming a three-dimensional interwoven composite structure with pulp fibers through a precise hot-melt bonding process. In the dry state, the low-melting-point component of COPET and the paper fibers form a stable network through hydrogen bonding, giving the material good initial strength. When exposed to water, the high-strength component of PET forms a supporting skeleton due to its inherent rigidity, effectively inhibiting the propagation of microcracks through physical barrier effects, while maintaining air permeability channels between fibers, ensuring the comfort of the material during use. The pre-fold lines 5 employ laser micropore weakening technology, precisely controlling the laser energy to form a uniformly distributed array of micropores in the vertical unfolding direction, constituting continuous weakening guide lines. The microporous structure maintains the overall strength of the material in a dry state, while in a wet environment, the paper fibers achieve directional bending through hydrogen bond recombination, avoiding the stress concentration problem caused by traditional mechanical indentation. Compared with mechanical indentation, laser microporous weakening technology not only preserves the original mechanical properties of the paper, but also effectively prevents adhesion during wet stacking, ensuring the stability and repeatability of the folding process. The synergistic effect of the tear-resistant layer 3 and the pre-folding line 5 enables the material to maintain excellent mechanical properties and functional performance in both dry and wet states. The mesh structure of the tear-resistant layer absorbs energy through the slippage and redistribution between fibers when under stress, while the microporous weakening design of the pre-folding line guides the stress to be released along a predetermined path, thereby achieving a balance between strength and flexibility under complex usage conditions. This composite structure design not only improves the durability of the material, but also takes into account air permeability and processability, making it suitable for applications with stringent performance requirements.

[0025] When used wet, the tear-resistant layer 3 in the groove 2 of the middle layer of the laminated structure 1 forms a three-dimensional support skeleton through polymer fiber mesh embedding technology. When exposed to water, the fibers swell and generate hydrogen bond enhancement effect, which significantly improves wet tensile strength and prevents paper tearing. At the same time, when the user pinches the unfolded sheet 41, the multi-directional interlaced groove design of the anti-slip texture 43 on the surface of the unfolded sheet 41 increases the coefficient of friction and prevents fingers from slipping. The pressure-sensitive adhesive layer 42 uses water-resistant acrylic adhesive with added nano-silica to form discontinuous adhesive dots. It uses the intermolecular forces between the colloidal carboxyl groups and water molecules to maintain peel strength in a wet environment, avoiding the problem of curling caused by water absorption and swelling, and making it easy for the paper to unfold. In addition, the pre-folding line 5 along the length direction of the laminated structure 1 is formed by laser micropore weakening technology. This micropore structure guides the paper to bend along a predetermined trajectory after wetting, promotes fiber hydrogen bond recombination, prevents wet paper from stacking and sticking, and ensures smooth use.

[0026] Through the above steps, a three-dimensional support skeleton is constructed by embedding a polymer fiber network between the pulp layers. The tear-resistant layer 3 is used to strengthen the wet strength of the central wiping area of ​​the laminated structure 1. When the material comes into contact with water, the fibers swell and generate a hydrogen bond enhancement effect, thereby significantly improving the wet tensile strength of the product. At the same time, the design of the easy-to-unfold mechanism ensures convenient operation even with wet hands, thus solving the problem that the existing wettable toilet paper has low strength in the central wiping area after getting wet and is prone to tearing during use.

Claims

1. A user-friendly, water-resistant toilet paper, comprising a laminated structure (1); characterized in that: It also includes a tear-resistant layer (3), the stacked structure (1) is a three-layer structure, the middle layer of the stacked structure (1) is provided with a slot (2), the inside of the slot (2) is provided with a tear-resistant layer (3), the tear-resistant layer (3) is a mesh reinforcement structure, and the right end of the stacked structure (1) is provided with an easy-to-unfold mechanism.

2. The easy-to-use, water-resistant toilet paper according to claim 1, characterized in that: The easy-to-unfold mechanism includes a sheet component and an anti-slip component. The sheet component is for the user to pinch, and the anti-slip component is used to improve the anti-slip performance of the sheet component.

3. The easy-to-use, water-resistant toilet paper according to claim 2, characterized in that: The sheet assembly includes a spread sheet (41) disposed on the right side of the stacked structure (1). The spread sheet (41) is wing-shaped and a pressure-sensitive adhesive layer (42) is adhered to the spread sheet (41).

4. The easy-to-use, water-resistant toilet paper according to claim 3, characterized in that: The anti-slip component includes anti-slip textures (43) formed on the outside of the unfolded sheet (41), and the anti-slip textures (43) are multi-directional interlaced grooves.

5. The easy-to-use, water-resistant toilet paper according to claim 4, characterized in that: The stacked structure (1) has a pre-folding line (5) along its length direction, and the pre-folding line (5) is perpendicular to the unfolding direction of the unfolded piece (41).

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