Adult paper diaper with side leakage prevention

Abstract

The application discloses a side leakage prevention adult paper diaper and belongs to the field of nursing supplies. The side leakage prevention adult paper diaper comprises a surface layer, an absorption layer and a bottom layer which are sequentially arranged, and double-layer three-dimensional guards are arranged on the two sides of the surface layer. The double-layer three-dimensional guards comprise a first guard and a second guard, and the second guard is arranged on the outer side of the first guard. The first guard is formed by hot adhesion of Tencel fiber and double-component fiber in a mass ratio of (0.9-1):(0.1-0.15), and the second guard is formed by hot adhesion of Tencel fiber and double-component fiber in a mass ratio of (0.9-1):(0.4-0.6). The application has the advantages of guaranteeing the side leakage prevention effect and improving the comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nursing supplies, in particular to an adult paper diaper with side leakage prevention. BACKGROUND

[0002] The basic function of an adult paper diaper is protection, and the side leakage prevention is an important part of the protection.

[0003] To solve the problem of side leakage, the industry generally adopts the way of setting a containment structure on both sides of the paper diaper to block the excrement such as urine in the middle of the paper diaper. In order to improve the effect of side leakage prevention, the way of strengthening the sealing property of the containment structure is generally adopted to hinder the penetration of excrement to the containment structure.

[0004] However, the strengthening of the sealing property of the containment structure often requires more dense filling materials, which is accompanied by the reduction of softness and air permeability, and thus leads to the reduction of comfort. SUMMARY

[0005] In order to improve the comfort while ensuring the effect of side leakage prevention, the present application provides an adult paper diaper with side leakage prevention.

[0006] The adult paper diaper with side leakage prevention provided by the present application adopts the following technical solution:

[0007] An adult paper diaper with side leakage prevention comprises a surface layer, an absorption layer and a bottom layer arranged in sequence, double-layered three-dimensional containment structures are arranged on both sides of the surface layer, the double-layered three-dimensional containment structures comprise a first containment structure and a second containment structure, the second containment structure is arranged outside the first containment structure, the first containment structure is formed by hot gluing of Tencel fiber and double-component fiber at a mass ratio of (0.9-1):(0.1-0.15), and the second containment structure is formed by hot gluing of Tencel fiber and double-component fiber at a mass ratio of (0.9-1):(0.4-0.6).

[0008] By adopting the above technical solution, the double-layered three-dimensional containment structures provide double protection against side leakage, the first containment structure and the second containment structure are both formed by hot gluing of Tencel fiber and double-component fiber, the Tencel fiber has good softness and bulkiness, which improves the touch and comfort, the double-component fiber plays a role in strengthening the support, which improves the effect of the three-dimensional containment structure in blocking urine and preventing side leakage, while retaining good air permeability, the content of Tencel fiber in the first containment structure is higher than that in the second containment structure, which not only improves the softness of the double-layered three-dimensional containment structure as a whole, but also helps to diffuse urine in the first containment structure, thereby preventing the urine from penetrating the second containment structure due to excessive concentration, and thus improving the effect of side leakage prevention.

[0009] Optionally, the core layer material of the double-component fiber is polyester, and the skin layer material of the double-component fiber is polyethylene.

[0010] By adopting the technical scheme, the polyester is a high-melting-point material, and the polyethylene is a low-melting-point material, in the process of thermal bonding, the skin layer material is partially melted to form a bonding force on the Tencel fibers, thereby forming a stable nonwoven fiber web structure and maintaining good air permeability and comfortable touch.

[0011] Optionally, the fineness of the Tencel fibers is 1.4-1.7 dex, and the fineness of the dual-component fibers is 2-3 dex.

[0012] By adopting the technical scheme, the fineness of the Tencel fibers and the dual-component fibers is controlled to balance the air permeability and barrier property of the containment structure and ensure the side leakage prevention function of the containment structure.

[0013] Optionally, the Tencel fibers include modified Tencel fibers, the modified Tencel fibers are combined with glycidyl methacrylate after being grafted with chitosan, and then crosslinked with isoprene to be prepared.

[0014] By adopting the technical scheme, the chitosan has natural antibacterial property, the Tencel fibers grafted with the chitosan can have antibacterial effect on the containment structure, and the interface bonding area and interface activity of the Tencel fibers are increased, the combination of the glycidyl methacrylate and the crosslinking of the isoprene are promoted, the local polyolefin interface is formed, the polarity difference between the Tencel fibers and the dual-component fibers is reduced, the interface bonding force is enhanced, the structural stability of the double-layer three-dimensional containment is improved, and the durability is stronger.

[0015] Optionally, the preparation method of the modified Tencel fibers includes the following steps: dissolving chitosan in acetic acid solution to obtain a chitosan solution for standby, adding Tencel fibers into the chitosan solution, heating and reacting under the protection of inert gas, and crosslinking the Tencel fibers with the chitosan through an oxidation-reduction initiation system, filtering and washing after the reaction, dispersing a first fiber mixture obtained in a first solvent, adding glycidyl methacrylate, heating and mixing, filtering and washing after the reaction, dispersing a second fiber mixture obtained in a second solvent, adding isoprene and an initiator, heating and mixing, filtering and washing after the reaction, and obtaining the modified Tencel fibers.

[0016] By adopting the technical scheme, the main component of the Tencel fibers is cellulose, the oxidation-reduction initiation system makes the cellulose and the chitosan crack to generate free radical sites, and then crosslink, the surface of the Tencel fibers grafted with the chitosan can react with the glycidyl methacrylate and provide carbon-carbon double bond free radical sites to realize the polymerization grafting of the isoprene, and the Tencel fibers are modified.

[0017] Optionally, the oxidation-reduction initiation system is a sodium thiosulfate / potassium persulfate system.

[0018] By adopting the technical scheme, the sodium thiosulfate / potassium persulfate system can generate active free radicals quickly at a lower temperature, and the initiation efficiency is significantly improved.

[0019] Optionally, the concentration of the chitosan solution is 3 g / L.

[0020] By adopting the technical scheme, the concentration of the chitosan is controlled, the rate of the chitosan grafting process is controlled, and the grafting effect is improved.

[0021] Optionally, the first solvent is ethanol or methanol.

[0022] Optionally, the second solvent is ethanol or methanol.

[0023] Optionally, the initiator is potassium persulfate.

[0024] Optionally, the mass ratio of the Tencel fiber, the chitosan, the glycidyl methacrylate and the isoprene is 10:(0.3-0.5):(0.06-0.1):(0.02-0.06).

[0025] By adopting the technical scheme, the content of each modified component is controlled, and the modified requirements of stability, high bonding force and air permeability are met.

[0026] Optionally, the first containment and the second containment are connected by water jetting.

[0027] By adopting the technical scheme, the water jetting directly entangles and combines the fibers of the first containment and the second containment, reduces the use of adhesives, and the three-dimensional entangled structure generated by the water jetting can uniformly distribute stress, is suitable for the modified Tencel fiber, and improves the stability of the double-layer three-dimensional containment.

[0028] Optionally, the second containment is provided with an elastic rubber band.

[0029] By adopting the technical scheme, the double-layer three-dimensional containment is tightened, and the posture of preventing side leakage of the double-layer three-dimensional containment on both sides is maintained.

[0030] In summary, the present application has the following beneficial effects:

[0031] 1. The double-layer three-dimensional containment of the present application provides double protection against side leakage. The first containment and the second containment are both formed by hot sticking of Tencel fiber and bicomponent fiber. The Tencel fiber has good softness and loftiness, improves the touch and comfort, and the bicomponent fiber plays a role in strengthening the support, improves the effect of blocking urine and preventing side leakage of the three-dimensional containment, and at the same time retains good air permeability. The content of Tencel fiber in the first containment is higher than that in the second containment, which not only improves the softness of the double-layer three-dimensional containment as a whole, but also helps to diffuse urine in the first containment, prevents excessive concentration of urine from penetrating the second containment, and thus improves the effect of preventing side leakage.

[0032] 2、The application also uses modified Tencel fiber, modified Tencel fiber grafted chitosan, chitosan has natural antibacterial property, after chitosan grafting Tencel fiber, it can play antibacterial effect on the containment structure, at the same time, it can increase the interfacial bonding area and interfacial activity of Tencel fiber, promote the combination of glycidyl methacrylate and the crosslinking of isoprene, form local polyolefin interface, reduce the polarity difference between Tencel fiber and bicomponent fiber, enhance the interfacial bonding force, improve the structural stability of double-layer three-dimensional containment, and have stronger durability. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the plan structure diagram of the side leakage prevention adult paper diaper of the embodiment 1 of the application.

[0034] Figure 2 is the cross-sectional structure diagram of the side leakage prevention adult paper diaper of the embodiment 1 of the application.

[0035] Explanation of reference signs:

[0036] 1, surface layer; 2, absorption layer; 3, bottom layer; 4, elastic waistline; 5, double-layer three-dimensional containment; 51, first containment; 52, second containment; 53, elastic rubber. DETAILED DESCRIPTION

[0037] The application will be further explained in detail below with reference to the accompanying drawings. Figures 1-2 The application will be further explained in detail below with reference to the accompanying drawings.

[0038] Embodiment 1

[0039] A side leakage prevention adult paper diaper, as shown in Figure 1 and Figure 2 A side leakage prevention adult paper diaper includes surface layer 1, absorption layer 2 and bottom layer 3 arranged in sequence, double-layer three-dimensional containment 5 is arranged on both sides of surface layer 1, surface layer 1 is bonded with bottom layer 3, and both ends of surface layer 1 and bottom layer 3 are connected with elastic waistline 4.

[0040] Surface layer 1 and bottom layer 3 can be non-woven fabric, and absorption layer 2 can be composed of high water absorption resin.

[0041] As shown in Figure 2 Double-layer three-dimensional containment 5 includes first containment 51 and second containment 52, second containment 52 is arranged outside first containment 51, and elastic rubber 53 is arranged on the side of second containment 52 away from surface layer 1, which plays a tightening role on double-layer three-dimensional containment 5, and maintains the side leakage prevention blocking posture of double-layer three-dimensional containment 5.

[0042] The first containment 51 is formed by hot bonding of Tencel fibers and bicomponent fibers, and the second containment 52 is formed by hot bonding of Tencel fibers and bicomponent fibers. The Tencel fibers have a fineness of 1.4 dex, and the bicomponent fibers have a fineness of 2 dex. The bicomponent fibers have a sheath-core structure, the core material of the bicomponent fibers is polyester, and the sheath material of the bicomponent fibers is polyethylene.

[0043] Specifically, the process of hot bonding is that the Tencel fibers and the bicomponent fibers are mixed and dispersed according to a proportion, an air flow carding is performed to form a fiber web, and the fiber web is penetrated by hot air at 135°C. The hot air melts the sheath part of the bicomponent fibers to form adhesion to the Tencel fibers, thereby forming a stable non-woven fiber web structure.

[0044] After the first containment 51 and the second containment 52 are formed, the first containment 51 and the second containment 52 are connected by water jetting to form the double-layer three-dimensional containment 5.

[0045] The Tencel fibers give the double-layer three-dimensional containment good softness and bulkiness, and the bicomponent fibers play a role in strengthening support and improving the effect of blocking urine and preventing side leakage while retaining good air permeability.

[0046] The first containment 51 is formed by hot bonding of Tencel fibers and bicomponent fibers at a mass ratio of 0.9:0.1, and the second containment 52 is formed by hot bonding of Tencel fibers and bicomponent fibers at a mass ratio of 0.9:0.4. The content of Tencel fibers in the first containment 51 is higher than that in the second containment 52, which not only improves the softness of the double-layer three-dimensional containment 5 as a whole, but also helps to diffuse urine in the first containment 51, thereby preventing excessive concentration of urine from penetrating the second containment 52 and improving the effect of preventing side leakage.

[0047] Example 2

[0048] The difference between this embodiment and Example 1 is that the first containment is formed by hot bonding of Tencel fibers and bicomponent fibers at a mass ratio of 1:0.15, and the second containment is formed by hot bonding of Tencel fibers and bicomponent fibers at a mass ratio of 1:0.6.

[0049] The Tencel fibers have a fineness of 1.7 dex, and the bicomponent fibers have a fineness of 3 dex.

[0050] Example 3

[0051] The difference between this embodiment and Example 1 is that the Tencel fibers are modified Tencel fibers.

[0052] Preparation method of modified Tencel fibers:

[0053] Take Tencel fiber, chitosan glycidyl methacrylate and isoprene according to the mass ratio of 10:0.3:0.06:0.02. The fineness of Tencel fiber is 1.4 dex; the molecular weight of chitosan is 400,000, and the degree of deacetylation is 85%.

[0054] Dissolve chitosan in acetic acid solution with a concentration of 2wt% to obtain a chitosan solution with a concentration of 3g / L, ready for use.

[0055] Disperse Tencel fiber in a sodium thiosulfate solution with a concentration of 0.5mol / L, soak for 1h, then filter and recover the Tencel fiber.

[0056] Disperse and soak Tencel fiber in the chitosan solution, heat the reaction device to 60℃ and protect it by passing nitrogen, then add a potassium persulfate solution with a concentration of 0.05mol / L dropwise, control the mass ratio of chitosan to potassium persulfate to be 1:0.2, after the dropwise addition is completed, allow the Tencel fiber to react with chitosan for 5h, then filter and wash with water to obtain a first fiber mixture.

[0057] Disperse the obtained first fiber mixture in ethanol, add glycidyl methacrylate, heat to 50℃ and mix for 2h, then filter and wash with ethanol after the reaction is completed to obtain a second fiber mixture.

[0058] Disperse the obtained second fiber mixture in ethanol, add isoprene and potassium persulfate, the mass of potassium persulfate used is 2% of the mass of isoprene used, heat to 60℃ and mix for reaction, then filter and wash with ethanol after the reaction is completed to obtain modified Tencel fiber.

[0059] Example 4

[0060] The difference between this example and Example 3 is that the preparation composition of the modified Tencel fiber is different.

[0061] Take Tencel fiber, chitosan, glycidyl methacrylate and isoprene according to the mass ratio of 10:0.5:0.1:0.06.

[0062] Example 5

[0063] The difference between this example and Example 1 is that the Tencel fiber is modified Tencel fiber.

[0064] Preparation method of modified Tencel fiber:

[0065] Take Tencel fiber and chitosan according to the mass ratio of 10:0.3. The fineness of Tencel fiber is 1.4 dex; the molecular weight of chitosan is 400,000, and the degree of deacetylation is 85%.

[0066] Dissolve chitosan in acetic acid solution with a concentration of 2wt% to obtain chitosan solution, and the concentration of chitosan is 3g / L.

[0067] Disperse the Tencel fiber in sodium thiosulfate solution with a concentration of 0.5mol / L, soak for 1h, and then filter and recover the Tencel fiber.

[0068] Disperse and soak the Tencel fiber in chitosan solution, heat the reaction device to 60℃ and protect it by passing nitrogen, then add dropwise potassium persulfate solution with a concentration of 0.05mol / L, control the mass ratio of chitosan to potassium persulfate to be 1:0.2, after the dropwise addition is completed, react for 5h to make the Tencel fiber crosslink with chitosan, after the reaction is completed, filter and wash with water to obtain modified Tencel fiber.

[0069] Example 6

[0070] The difference between this example and Example 1 is that the Tencel fiber is modified Tencel fiber.

[0071] Preparation method of modified Tencel fiber:

[0072] Take Tencel fiber, γ-methacryloxypropyltrimethoxysilane and isoprene according to a mass ratio of 10:0.3:0.02. The fineness of the Tencel fiber is 1.4dex; the molecular weight of chitosan is 400,000, and the degree of deacetylation is 85%.

[0073] Disperse the Tencel fiber in ethanol, add γ-methacryloxypropyltrimethoxysilane and heat to 60℃ for 1.5h, after the reaction is completed, filter and wash with ethanol to recover the Tencel fiber.

[0074] Disperse the recovered Tencel in ethanol, add isoprene and potassium persulfate, the mass of potassium persulfate is 2% of the mass of isoprene, heat to 60℃ for mixing reaction, after the reaction is completed, filter and wash with ethanol to obtain modified Tencel fiber.

[0075] Comparative Example 1

[0076] The difference between this example and Example 1 is that the double-layer three-dimensional containment is connected by two layers of the first containment hydroentanglement.

[0077] Comparative Example 2

[0078] The difference between this example and Example 1 is that the double-layer three-dimensional containment is connected by two layers of the second containment hydroentanglement.

[0079] Performance test

[0080] Barrier test: The double-layer three-dimensional containment is tested by hydrostatic pressure test according to GB / T 4744-1997 "Determination and evaluation of waterproof performance of textile fabric by hydrostatic pressure method", the first containment bears the water pressure, and three water leakage points appear on the back of the second containment, the higher the hydrostatic pressure, the stronger the barrier ability.

[0081] Air permeability test: The double-layer three-dimensional containment is tested by air permeability test according to GB / T 5453-1997 "Determination of air permeability of textile fabric", the test area is 30cm 2 , the test pressure is 125Pa, the higher the air permeability, the better the air permeability.

[0082] Softness test: The double-layer three-dimensional containment is tested by fabric softness tester, the higher the softness, the better the softness.

[0083] Breaking strength test: The double-layer three-dimensional containment is tested by tensile test at a speed of 300mm / min, the higher the breaking strength, the more stable the structure.

[0084] The test results are shown in Table 1.

[0085] Table 1

[0086]

[0087]

[0088] According to the test results in Table 1, and comparing Example 1 with Comparative Example 1 and Comparative Example 2, it can be seen that the double-layer three-dimensional containment obtained by using different ratios of Tencel fiber and double-component fiber improves the overall softness of the double-layer three-dimensional containment compared with the double-layer containment with the same ratio of Tencel fiber and double-component fiber, and helps to diffuse urine in the first containment, hinders excessive concentration of urine and penetrates the second containment, and is better in barrier property, air permeability, softness and structural stability, that is, simultaneously meets the requirements of preventing side leakage and improving comfort.

[0089] Comparing Example 1 with Example 3, it can be seen that the double-layer three-dimensional containment prepared by using modified Tencel fiber further improves the barrier property, air permeability, softness and structural stability of the double-layer three-dimensional containment due to the improved compatibility of the modified Tencel fiber and the double-component fiber. Comparing with Example 5 and Example 6, it can be seen that the modification effect of Tencel fiber after grafting with chitosan, combining with glycidyl methacrylate, and crosslinking with isoprene is the best.

[0090] The specific embodiments are only illustrative of the application, and are not intended to limit the application. Any modifications made by those skilled in the art without creative contribution to the application, as long as they are within the scope of the claims of the application, are protected by the patent law.

Claims

1. A side leakage preventing adult paper diaper, characterized by: The diaper comprises a surface layer (1), an absorption layer (2) and a bottom layer (3) arranged in sequence, both sides of the surface layer (1) are provided with double-layer three-dimensional containment (5), the double-layer three-dimensional containment (5) comprises a first containment (51) and a second containment (52), the second containment (52) is arranged outside the first containment (51), the first containment (51) is formed by hot bonding of Tencel fiber and double-component fiber with a mass ratio of (0.9-1):(0.1-0.15), the second containment (52) is formed by hot bonding of Tencel fiber and double-component fiber with a mass ratio of (0.9-1):(0.4-0.6); The Tencel fiber comprises modified Tencel fiber, the modified Tencel fiber is combined with glycidyl methacrylate after being grafted with chitosan, and then cross-linked with isoprene to prepare.

2. The side leakage preventing adult paper diaper according to claim 1, wherein: The core layer material of the double-component fiber is polyester, and the skin layer material of the double-component fiber is polyethylene.

3. The side leakage preventing adult paper diaper according to claim 1, characterized in that: The fineness of the Tencel fiber is 1.4-1.7 dex, and the fineness of the double-component fiber is 2-3 dex.

4. The side leakage preventing adult paper diaper according to claim 1, characterized in that: The preparation method of the modified Tencel fiber is as follows: chitosan is dissolved in acetic acid solution to obtain a chitosan solution for standby, Tencel fiber is added into the chitosan solution, heated and reacted under inert gas protection, and cross-linked with chitosan through an oxidation-reduction initiation system, after the reaction is completed, filtration and water washing are performed, the obtained first fiber mixture is dispersed in a first solvent, glycidyl methacrylate is added, heated and mixed, after the reaction is completed, filtration and ethanol washing are performed, the obtained second fiber mixture is dispersed in a second solvent, isoprene and an initiator are added, heated and mixed, after the reaction is completed, filtration and ethanol washing are performed, and the modified Tencel fiber is obtained; The oxidation-reduction initiation system is a sodium thiosulfate / potassium persulfate system; The first solvent is ethanol or methanol; The second solvent is ethanol or methanol; The initiator is potassium persulfate.

5. The side leakage preventing adult paper diaper according to claim 1, characterized in that: The mass ratio of the Tencel fiber, chitosan, glycidyl methacrylate and isoprene is 10:(0.3-0.5):(0.06-0.1):(0.02-0.06).

6. The side leakage preventing adult paper diaper according to claim 1, characterized in that: The first containment (51) and the second containment (52) are connected by water jetting.

7. The side leakage preventing adult paper diaper according to claim 1, characterized in that: The second containment (52) is provided with an elastic rubber band (53).

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