Wet tissue cap composition, wet tissue cap and wet tissue container

Abstract

A wet wipe cap composition, a wet wipe cap, and a wet wipe container are disclosed. The disclosed wet wipe cap composition comprises polypropylene and starch.

Description

Technology Field

[0001] A wet wipe cap composition, a wet wipe cap, and a wet wipe container are disclosed. More specifically, a wet wipe cap composition, a wet wipe cap, and a wet wipe container are disclosed that can provide a wet wipe cap having excellent tensile and bending modulus, processability, heat resistance, and biodegradability. Background Technology

[0002] With the recent rise in interest in environmental protection, the issue of environmental pollution caused by plastic waste is emerging as a major social concern. In particular, plastic caps used in disposable products such as wet wipes do not naturally decompose after use, remaining in the soil and oceans for extended periods and potentially exacerbating environmental pollution.

[0003] Conventional wet wipe caps have primarily been manufactured using petroleum-based synthetic resins, such as polyethylene or polypropylene, as a single material. While these caps offer advantages such as excellent mechanical strength, water resistance, and economical manufacturing costs, they pose a critical environmental problem, as it takes hundreds of years for them to completely decompose in the natural environment.

[0004] To address this problem, attempts have been made to develop caps utilizing biodegradable materials; however, existing approaches have several limitations. While the use of pure biodegradable polymers offers high environmental friendliness, they struggle to withstand repeated opening and closing, making them prone to breakage. When natural polymers are used alone, their hydrophilicity leads to poor dimensional stability in humid environments, and their high brittleness increases the likelihood of cracking or breakage. Furthermore, most biodegradable materials are more expensive to manufacture than petroleum-based plastics, making it difficult to ensure economic viability.

[0005] Furthermore, simply mixing materials with different characteristics can weaken the interfacial bonding force between polar and non-polar materials, potentially degrading the properties of the composite material. This is particularly pronounced when mixing hydrophilic natural polymers with hydrophobic polymers and can reduce the durability and reliability of the cap.

[0006] Therefore, there is an urgent need to develop biodegradable composite material technology for wet wipe caps that is economically feasible while simultaneously satisfying environmental friendliness and practical physical properties. In particular, for the cap sector, which requires repeated use and water resistance, innovative material technology is needed that can secure biodegradability while maintaining the advantages of conventional plastics. The problem to be solved

[0007] One embodiment of the present invention provides a wet wipe cap capable of providing excellent tensile and bending modulus, processability, heat resistance, and biodegradability.

[0008] Another embodiment of the present invention provides a wet wipe cap manufactured from the wet wipe cap composition.

[0009] Another embodiment of the present invention provides a wet wipe container including the wet wipe cap. means of solving the problem

[0010] One aspect of the present invention is,

[0011] A wet wipe cap composition comprising polypropylene and starch is provided.

[0012] The starch content may be 27 to 128 parts by weight per 100 parts by weight of the polypropylene.

[0013] The above starch may include corn starch, wheat starch, potato starch, rice starch, cassava starch, tapioca starch, mung bean starch, sweet potato starch, potato starch, or a combination thereof.

[0014] The above wet wipe cap composition may further include 3 to 28 parts by weight of a compatibilizer and 1 to 11 parts by weight of a plasticizer with respect to 100 parts by weight of the polypropylene.

[0015] The above compatibilizer may include ethylene-acrylic acid copolymer (EAA), ethylene-vinyl acetate copolymer (EVA), polypropylene / glycidyl methacrylate (PP / GMA) graft, starch / methyl methacrylate graft copolymer, or a combination thereof.

[0016] The above plasticizer may include soybean oil, peanut oil, coconut oil, palm oil, flaxseed oil, cottonseed oil, corn oil, sunflower seed oil, pine nut oil, tung oil, castor oil, sorbitol, glycerol, or a combination thereof.

[0017] Another aspect of the present invention is,

[0018] A wet wipe cap manufactured from the above wet wipe cap composition is provided.

[0019] Another aspect of the present invention is,

[0020] Wet wipe case; and

[0021] A wet wipe container including the above wet wipe cap is provided. Effects of the invention

[0022] According to the present invention, by designing an optimal mixing ratio of polypropylene (PP) and starch, a balance of biodegradability and mechanical strength can be achieved, thereby providing a technical effect of significantly improving environmental friendliness compared to conventional single plastic material caps.

[0023] In addition, by applying a technology to enhance the interfacial bonding strength between starch (polar) and PP (non-polar) in the present invention, the problem of mechanical property degradation commonly occurring in composite materials can be effectively resolved.

[0024] Furthermore, by improving the inherent brittleness of starch through the application of a plasticizer, the present invention can secure the durability of repeated opening and closing of the wet wipe cap and maintain stable performance even in practical usage environments.

[0025] Through these combined effects, high biodegradability and economic efficiency are simultaneously achieved, thereby creating industrial value as a sustainable packaging solution. Specific details for implementing the invention

[0026] Hereinafter, a wet wipe cap composition according to one embodiment of the present invention will be described in detail.

[0027] A wet wipe cap composition according to one embodiment of the present invention comprises polypropylene and starch.

[0028] The aforementioned polypropylene is a thermoplastic polymer that offers excellent mechanical strength and heat resistance, as well as the advantage of being easy to mold. In addition, polypropylene has high chemical stability, providing resistance to water and various solutions, and its lightweight nature enhances the portability and ease of use of wet wipe caps.

[0029] In the above wet wipe cap composition, polypropylene is used together with starch to balance the strength, durability, moldability, and surface texture of the wet wipe cap.

[0030] The above polypropylene may have a melt mass flow rate (MFR) in the range of 7.5 to 9.5 g / 10 min.

[0031] The starch content may be 27 to 128 parts by weight per 100 parts by weight of the polypropylene. This compositional ratio is established to prevent problems such as insufficient biodegradability when the starch content is too low, and conversely, reduced mechanical strength and injection moldability when the starch content is excessive. That is, the starch content within the above range optimizes the balance between improved biodegradability and mechanical properties (e.g., tensile strength, bending strength), thereby simultaneously ensuring the durability for repeated opening and closing and shape stability required for a wet wipe cap. Furthermore, since starch is a naturally derived biodegradable polymer that can be decomposed by microorganisms in the environment upon disposal after product use, the wet wipe cap of the present invention can provide significantly superior effects in terms of eco-friendliness and sustainability compared to conventional petroleum-based monosaccharide caps.

[0032] The above starch may include corn starch, wheat starch, potato starch, rice starch, cassava starch, tapioca starch, mung bean starch, sweet potato starch, potato starch, or a combination thereof.

[0033] The above wet wipe cap composition may further include 3 to 28 parts by weight of a compatibilizer and 1 to 11 parts by weight of a plasticizer with respect to 100 parts by weight of the polypropylene.

[0034] The above compatibilizer enhances the interfacial bonding strength between non-polar polypropylene and polar starch, thereby increasing the compatibility between the two components. Consequently, the starch is uniformly dispersed, which can improve physical properties of the composite material, such as mechanical strength, tensile and bending modulus. Furthermore, if the content of the compatibilizer is less than 3 parts by weight, sufficient interfacial bonding strength may not be secured, which may lead to aggregation of starch particles or a deterioration of physical properties; conversely, if it exceeds 28 parts by weight, the excessive presence of the compatibilizer may cause problems such as increased melt viscosity, reduced moldability, and increased costs. Therefore, the content of the compatibilizer within the above range serves as a critical compositional ratio that optimizes the balance between starch dispersibility, mechanical properties, and processing stability, and can contribute to improving the durability and biodegradability of the wet wipe cap.

[0035] The above compatibilizer may include ethylene-acrylic acid copolymer (EAA), ethylene-vinyl acetate copolymer (EVA), polypropylene / glycidyl methacrylate (PP / GMA) graft, starch / methyl methacrylate graft copolymer, or a combination thereof.

[0036] The plasticizer described above serves to mitigate the brittleness of starch and improve the flexibility of the polypropylene-starch composite. Specifically, the plasticizer partially breaks hydrogen bonds between starch molecules to increase the mobility of starch chains, thereby allowing the starch to be dispersed more uniformly within the polypropylene matrix. This improves the toughness and impact resistance of the wet wipe cap and effectively prevents cracks or breakage that may occur during repeated opening and closing. If the content of the plasticizer is less than 1 weight part, the brittleness of the starch is not sufficiently improved, making it difficult to secure the flexibility of the composite material; if it exceeds 11 weight parts, excessive plasticization may lead to problems such as reduced mechanical strength, decreased molding stability, and increased tackiness. Therefore, the plasticizer content within the above range is a critical compositional ratio that optimally achieves a balance between the softening effect of the starch and the maintenance of mechanical strength, thereby simultaneously improving the durability of repeated opening and closing of the wet wipe cap and deformation stability in actual usage environments.

[0037] The above plasticizer may include soybean oil, peanut oil, coconut oil, palm oil, flaxseed oil, cottonseed oil, corn oil, sunflower seed oil, pine nut oil, tung oil, castor oil, sorbitol, glycerol, or a combination thereof.

[0038] Hereinafter, a wet wipe cap according to one embodiment of the present invention will be described in detail.

[0039] A wet wipe cap according to one embodiment of the present invention may be manufactured from a composite material comprising polypropylene and starch, and comprising a compatibilizer and a plasticizer.

[0040] First, polypropylene, starch, a compatibilizer, and a plasticizer are weighed according to the above compositional ratios and mixed uniformly. In this process, the compatibilizer strengthens the interfacial bonding force between the starch and the polypropylene to ensure that the two components are uniformly dispersed, while the plasticizer mitigates the brittleness of the starch and increases the flexibility of the composite to prevent cracking or breakage during the subsequent injection molding process.

[0041] Subsequently, the mixed raw materials are melted at a high temperature using an extruder or a plastic mixing device, and during the melting process, starch and polypropylene are homogeneously mixed, and a compatibilizer and a plasticizer assist in the compatibility of each component to optimize the viscosity and injection molding suitability of the composite material.

[0042] Subsequently, the molten composition is injected into a mold designed to suit the cap structure and injection molded. The mold design takes into account the opening and closing hinge, locking structure, and central opening / closing part of the wet wipe cap, and the injection conditions are optimized according to the starch content and the composition of the compatibilizer and plasticizer to ensure the shape stability and repeated opening / closing durability of the cap.

[0043] Afterward, the molded cap is demolded after being sufficiently cooled within the mold, and internal stress or deformation is prevented by ensuring that rapid temperature changes do not occur during the cooling process.

[0044] If necessary, the cap surface can be polished or additional antimicrobial coating or UV stabilization treatment can be applied to improve the usability, durability, and shelf life of the final product.

[0045] A wet wipe cap manufactured according to the above method can achieve a balanced combination of tensile strength, bending strength, durability against repeated opening and closing, shape stability, and biodegradability depending on the compositional ratio of starch content, compatibilizer, and plasticizer. The compatibilizer ensures suitability for injection molding by controlling viscosity and ensuring uniform dispersion of starch and polypropylene, while the plasticizer improves the reliability of the final cap by preventing cracks and deformation that may occur during repeated opening and closing. Therefore, a wet wipe cap manufactured from the wet wipe cap composition of the present invention simultaneously satisfies high strength, durability, shape stability, and biodegradability compared to conventional single-plastic caps, and can be provided as an environmentally friendly product with high industrial value.

[0046] Hereinafter, a wet wipe container according to one embodiment of the present invention will be described in detail.

[0047] A wet wipe container according to one embodiment of the present invention includes a wet wipe case and the wet wipe cap.

[0048] The above wet wipe case has a sealed structure capable of properly storing wet wipes and maintaining moisture, and is designed to allow the user to easily dispense wet wipes.

[0049] The above wet wipe cap is coupled to the opening and closing part of the wet wipe case to minimize external exposure of the wet wipe, and is manufactured to have sufficient strength and flexibility so that no deformation or cracking occurs even with repeated opening and closing.

[0050] In addition, the wet wipe cap minimizes moisture evaporation of the wet wipe when combined with the wet wipe case and provides airtightness to stably maintain internal humidity even after use.

[0051] The structure and material selection of the above wet wipe container are designed by comprehensively considering user convenience, quality maintenance during long-term storage, and the biodegradability and environmental friendliness of the materials.

[0052] The present invention will be described below with reference to the following examples, but the present invention is not limited to the following examples.

[0053] Example 1: Wet wipe cap composition and wet wipe cap manufacturing

[0054] (Preparation of wet wipe cap composition)

[0055] In this embodiment, a wet wipe cap composition was prepared based on 100 parts by weight of polypropylene (MFR: 8.5 g / 10 min), comprising 78 parts by weight of dried starch (corn starch) with a moisture content of 0.5% or less, 16 parts by weight of a compatibilizer (EAA), and 6 parts by weight of a plasticizer (soybean oil). First, the polypropylene, dried starch, and compatibilizer were weighed. The plasticizer (soybean oil) was injected into the middle of the extruder using a liquid metering pump. Subsequently, the raw materials were melted and mixed using a twin-screw extruder set to 170–190°C to form a composite material. In particular, the screw was designed to generate high shear force to promote interfacial reactions between the starch and the polymer, and the molten composite material was extruded into pellet form and cut to be prepared as a material for injection molding.

[0056] (Injection molding of wet wipe caps)

[0057] A wet wipe cap was formed using an injection molding machine with the above-mentioned pellets. Injection molding was performed at a barrel temperature of 180–200°C, a nozzle temperature of 190°C or lower, and a mold temperature of 25–40°C. The molten composition was injected into the mold and cooled within the mold for a set cooling time (7 seconds) to solidify sufficiently before demolding. During this cooling process, the cooling speed was controlled to minimize internal residual stress and deformation of the cap.

[0058] Example 2: Wet wipe cap composition and wet wipe cap manufacturing

[0059] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the starch content was changed to 27 parts by weight.

[0060] Example 3: Wet wipe cap composition and wet wipe cap manufacturing

[0061] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the starch content was changed to 128 parts by weight.

[0062] Example 4: Wet wipe cap composition and wet wipe cap manufacturing

[0063] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the compatibilizer was changed to 3 parts by weight.

[0064] Example 5: Wet wipe cap composition and wet wipe cap manufacturing

[0065] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the compatibilizer was changed to 28 parts by weight.

[0066] Example 6: Wet wipe cap composition and wet wipe cap manufacturing

[0067] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the plasticizer was changed to 1 part by weight.

[0068] Example 7: Wet wipe cap composition and wet wipe cap manufacturing

[0069] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the plasticizer was changed to 11 parts by weight.

[0070] Comparative Example 1: Wet wipe cap composition and wet wipe cap manufacturing

[0071] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the starch content was changed to 26 parts by weight.

[0072] Comparative Example 2: Wet wipe cap composition and wet wipe cap manufacturing

[0073] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the starch content was changed to 129 parts by weight.

[0074] Comparative Example 3: Wet wipe cap composition and wet wipe cap manufacturing

[0075] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the compatibilizer was changed to 2 parts by weight.

[0076] Comparative Example 4: Wet wipe cap composition and wet wipe cap manufacturing

[0077] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the compatibilizer was changed to 29 parts by weight.

[0078] Comparative Example 5: Wet wipe cap composition and wet wipe cap manufacturing

[0079] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the plasticizer was changed to 0.5 parts by weight.

[0080] Comparative Example 6: Wet wipe cap composition and wet wipe cap manufacturing

[0081] A wet wipe cap composition and a wet wipe cap were prepared in the same manner as in Example 1, except that the content of the plasticizer was changed to 12 parts by weight.

[0082] The types of raw materials and compositions of the wet wipe cap compositions prepared in Examples 1 to 7 and Comparative Examples 1 to 6 are shown in Table 1 below.

[0083] Content (parts by weight) polypropylene starch Commercialization agent plasticizer Example 1 100 78 16 6 Example 2 100 27 16 6 Example 3 100 128 16 6 Example 4 100 78 3 6 Example 5 100 78 28 6 Example 6 100 78 16 1 Example 7 100 78 16 11 Comparative Example 1 100 26 16 6 Comparative Example 2 100 129 16 6 Comparative Example 3 100 78 2 6 Comparative Example 4 100 78 29 6 Comparative Example 5 100 78 16 0.5 Comparative Example 6 100 78 16 12

[0085] Evaluation Example 1: Evaluation of Physical Properties of Composite Material for Manufacturing Wet Wipe Caps

[0086] The physical properties of the composite materials (pellets) for making wet wipe caps prepared in Examples 1 to 7 and Comparative Examples 1 to 6 were measured by the following method, and the results are shown in Table 2 below.

[0087] (1) Tensile Modulus

[0088] Tensile modulus was measured as an indicator of the tensile stiffness of the composite material. Measurements were performed according to ASTM D638 standards. Standardized dumbbell-shaped specimens were fixed to a universal testing machine (UTM), and a tensile force was applied at a constant speed. The tensile modulus was calculated by measuring the initial linear slope of the stress-strain curve when the composite material deformed within its elastic limit. Prior to testing, the specimens were conditioned for at least 48 hours at 23±2℃ and 50±5% relative humidity, and the specimen manufacturing method (compression molding or injection molding) was maintained identically.

[0089] (2) Flexural Modulus

[0090] The bending modulus was measured according to ASTM D790 (3-point bending test) to evaluate the shape retention and flexural stiffness of the cap structure. Standardized rectangular specimens were placed on supports, and deformation was induced by applying a load at a constant speed. The bending modulus was calculated from the initial slope of the load-deformation curve, and, if necessary, the brittle behavior and deformation limit before failure were recorded by referring to the ASTM D7264 method (short span length condition).

[0091] (3) Melt Flow Rate (MFR)

[0092] MFR was measured according to ASTM D1238 to evaluate the processability and injection molding suitability of the composite material. After melting the composite material at a constant temperature (230°C), the MFR value was calculated by applying a specified load and measuring the mass (g) of the molten material discharged through a standard nozzle for 10 minutes.

[0093] (4) Heat Deflection Temperature (HDT)

[0094] HDT was measured according to ASTM D648 to evaluate the heat resistance and high-temperature stability of the composite material. A constant stress (0.45 MPa) was applied to a standardized test specimen, and the temperature was increased at a constant rate (2°C / min). The temperature at the moment the specified deformation (0.32 mm) was reached was recorded as the HDT value.

[0095] (5) Degree of Biodegradation

[0096] The biodegradability was measured according to ASTM D5338 standards to evaluate the environmental friendliness and biodegradability of the composite material. The amount of carbon dioxide (CO2) generated was measured while culturing the composite material for a certain period in an aerobic composting environment (58±2℃) containing microorganisms. The biodegradability (%) was calculated by comparing the measured amount of CO2 to the theoretical amount of complete decomposition. For composites containing non-biodegradable resins such as PP, the relative biodegradability was recorded based on both the total sample and the biodegradable component.

[0097] (6) Impact Strength

[0098] Impact strength was measured according to ASTM D256 to evaluate the impact resistance of the cap hinge and fastening parts. The fracture energy was measured by applying a single impact to a notched standard specimen using a weight dropped from a certain height, and this was converted into energy-to-cross-sectional area to determine the impact strength (kJ / m²). 2 It was represented as ). The specimens were tested after conditioning under the same conditions (23±2℃, 50±5% RH).

[0099] (7) Surface Hardness

[0100] Surface hardness was measured using a Shore D hardness tester in accordance with ASTM D2240 to evaluate the scratch resistance and appearance durability of the cap surface. The hardness value was read by applying a durometer needle vertically to the flat surface of the composite material, and the average value was expressed after repeating the measurement at least five times for each sample. The test temperature was maintained at 23±2℃.

[0101] Tensile modulus (MPa) Bending modulus (MPa) Melt mass flow rate (g / 10 min) Heat distortion temperature (°C) Biodegradability (%) Impact strength (kJ / m²) 2 ) Surface hardness (Shore D) Example 1 1,800 2,200 8.5 95 65 25 70 Example 2 1,750 2,150 8.2 94 60 24 69 Example 3 1,780 2,180 8.7 96 68 25 70 Example 4 1,790 2,190 7.9 93 65 25 68 Example 5 1,800 2,200 9.0 97 65 25 71 Example 6 1,770 2,170 8.3 94 65 23 69 Example 7 1,810 2,210 8.8 96 65 26 70 Comparative Example 1 1,700 2,100 8.5 95 55 23 70 Comparative Example 2 1,550 1,980 8.7 94 70 22 70 Comparative Example 3 1,500 1,950 7.0 90 65 20 65 Comparative Example 4 1,700 2,100 6.0 97 65 25 72 Comparative Example 5 1,780 2,180 8.0 93 65 18 69 Comparative Example 6 1,650 2,050 9.5 96 65 27 67

[0103] Referring to Table 2 above, the pellets (composite materials) for manufacturing wet wipe caps prepared in Examples 1 to 7 showed excellent results in all measured physical properties. Specifically, the tensile modulus was 1,750–1,810 MPa, the flexural modulus was 2,150–2,210 MPa, the melt mass flow rate (MFR) was 7.9–9.0 g / 10 min, the heat distortion temperature was 93–97°C, the biodegradability was 60–68%, and the impact strength was 23–26 kJ / m² 2 The surface hardness was found to be 68 to 71 Shore D, providing balanced performance in mechanical strength, processability, heat resistance, and environmental friendliness.

[0104] On the other hand, the pellets (composite materials) for making wet wipe caps manufactured in Comparative Examples 1 to 6 showed a distinct difference from Examples 1 to 7, as some or many of their physical properties were poor. Specifically, Comparative Example 1 had low tensile modulus, bending modulus, and biodegradability, resulting in relatively lower mechanical strength and environmental friendliness. Comparative Example 2 had low tensile modulus and bending modulus, resulting in weak overall mechanical strength and somewhat unfavorable user experience. Comparative Example 3 had low tensile modulus, bending modulus, melt mass flow rate, heat distortion temperature, impact strength, and surface hardness, making it unfavorable in almost all aspects, including mechanical strength, processability, heat resistance, and impact resistance. Comparative Example 4 had low tensile modulus, bending modulus, and melt mass flow rate, which limited strength and processability, while Comparative Example 5 had low impact strength, resulting in reduced resistance to external impact after use. Comparative Example 6 had low tensile modulus and bending modulus, resulting in weak mechanical strength and potentially reduced user experience and durability. Therefore, the data in Table 2 clearly shows that Examples 1 to 7 provide balanced and excellent performance in all physical properties, such as tensile and bending strength, MFR, heat distortion temperature, biodegradability, impact strength, and surface hardness, whereas Comparative Examples 1 to 6 have relatively poor performance in certain physical properties, such as long-term storage, processability, mechanical strength, and environmental friendliness.

[0105] Although preferred embodiments according to the present invention have been described above with reference to examples, they are merely illustrative and will be understood by those skilled in the art that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the scope of protection of the present invention should be determined by the appended claims.

Claims

Claim 1 A wet wipe cap composition comprising 100 parts by weight of polypropylene, 27 to 128 parts by weight of starch, 3 to 28 parts by weight of a compatibilizer, and 1 to 11 parts by weight of a plasticizer, wherein the compatibilizer comprises an ethylene-acrylic acid copolymer (EAA), an ethylene-vinyl acetate copolymer (EVA), a polypropylene / glycidyl methacrylate (PP / GMA) graft, a starch / methyl methacrylate graft copolymer, or a combination thereof. Claim 2 delete Claim 3 A wet wipe cap composition according to claim 1, wherein the starch comprises corn starch, wheat starch, potato starch, rice starch, cassava starch, tapioca starch, mung bean starch, sweet potato starch, potato starch, or a combination thereof. Claim 4 delete Claim 5 delete Claim 6 A wet wipe cap composition according to claim 1, wherein the plasticizer comprises soybean oil, peanut oil, coconut oil, palm oil, linseed oil, cottonseed oil, corn oil, sunflower seed oil, pine nut oil, tung oil, castor oil, sorbitol, glycerol, or a combination thereof. Claim 7 A wet wipe cap manufactured from a wet wipe cap composition according to any one of paragraphs 1, 3 and 6. Claim 8 A wet wipe case; and a wet wipe container comprising a wet wipe cap according to claim 7.

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