Small high-barrier sanitary napkin wrapping film

Abstract

The utility model provides a small film for a high-barrier sanitary napkin. The small film comprises an outer layer film and a high-barrier film, the high-barrier film comprises a substrate and a high-barrier coating, the high-barrier coating is coated on the substrate in a coating manner, and the coating weight of the high-barrier coating is 0.1-2g / m < 2 >; the outer-layer film is attached to the high-barrier film in a film spraying mode; or the outer layer film is attached to the high-barrier film through glue; the utility model provides a small film for a high-barrier sanitary napkin, which aims to solve the main technical problems of high gas permeability and low barrier property of the film.

Description

Technical Field

[0001] The utility model relates to an independent small package of a sanitary napkin, in particular to a small high-barrier sanitary napkin package. Background Art

[0002] The independent small envelope of sanitary napkins is to protect the product from cleanliness and contamination, and also to provide users with a better feel and sensation.

[0003] Some sanitary napkins are added with volatile sprays such as scent or mint to improve the comfort of users. The coating of such sanitary napkins must have high barrier properties, otherwise the odor will evaporate during long-term storage, thus losing its original function.

[0004] Commonly used sanitary napkin film materials include PE film, non-woven film, etc. These materials have the advantages of breathability, softness, and easy processing. This kind of film has a high gas permeability, that is, the barrier property is very low, and its oxygen permeability is 1000-10000cm3 / m2.day.atm.

[0005] Among plastics on the market, EVOH is currently considered to be the polymer with the highest barrier property and can be co-extruded with PE to form a film. The oxygen permeability of the film they produce is 0.5-3cm3 / m2.day.atm., which can well protect the odor in the bag. However, the co-extruded EVOH film is about 5g / m2, and the total weight is about 35g. The cost is still relatively high, reaching ￥35 / Kg. The cost is too high.

[0006] Therefore, it is necessary to design a packaging film with low cost and oxygen permeability of 2-5cm3 / m2.day.atm. close to the highest value of plastic film, which can meet the odor barrier requirements of sanitary napkins. Utility Model Content

[0007] The main technical problem to be solved by the utility model is the problem of high gas permeability of the envelope and low barrier property, and a small envelope of a high-barrier sanitary napkin is provided.

[0008] In order to solve the above technical problems, the utility model provides a high-barrier sanitary napkin small package film, including an outer film and a high-barrier film; the high-barrier film includes a substrate and a high-barrier coating;

[0009] The substrate is a heat-sealable BOPP / PET / PE film;

[0010] The high barrier coating is a high barrier PVA coating or a PVDC coating;

[0011] The high barrier coating is coated on the substrate in a coating manner, and the coating amount of the high barrier coating is 0.1-2 g / m2;

[0012] The outer film is attached to the high barrier film by laminating; or the outer film is attached to the high barrier film by glue.

[0013] In a preferred embodiment, the outer film is a PP or PE film or a non-woven fabric.

[0014] In a preferred embodiment, it also includes a printing ink layer.

[0015] In a preferred embodiment, the ink layer is printed on the outer layer of the outer film.

[0016] In a preferred embodiment, the ink layer is printed on one side of the high barrier coating.

[0017] In a preferred embodiment, the outer film and the substrate can be used reversely, with the substrate facing outwards, and the high barrier coating and ink disposed between the outer film and the substrate.

[0018] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0019] 1. By setting a high barrier coating and adopting a coating composite film structure, the oxygen permeability is 2-5cm3 / m2.day.atm., which is close to the highest barrier value of plastic film and can meet the odor barrier requirements of sanitary napkins.

[0020] 2. By setting a high barrier film, the coating amount of the high barrier coating is 0.1-2 g / m2, and its gram weight can be reduced to 25 g / m2, which can reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a small package of a conventional polyolefin sanitary napkin in the prior art;

[0022] Figure 2 This is a structural diagram of a sanitary napkin with a small polyolefin sanitary napkin envelope in the prior art;

[0023] Figure 3 It is a structural diagram of a sanitary napkin wrapped with a small polyolefin sanitary napkin film in the prior art;

[0024] Figure 4 It is a structural diagram of a small package of a high-barrier co-extruded sanitary napkin in the prior art;

[0025] Figure 5 This is a structural diagram of the small package of the high-barrier sanitary napkin in the first embodiment of this embodiment;

[0026] Figure 6 This is a structural diagram of a small package of a high-barrier sanitary napkin in the second embodiment of this embodiment;

[0027] Figure 7This is a structural diagram of a small package of a high-barrier sanitary napkin in the third embodiment of this embodiment;

[0028] Figure 8 This is a structural diagram of a small package of a high-barrier sanitary napkin in the fourth embodiment of this embodiment;

[0029] Explanation of the accompanying reference numerals: 1. outer film; 11. outer substrate; 2. substrate; 21. inner film PE; 3. high barrier coating; 4. ink layer; 5. composite glue layer; 6. packaged object. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0033] like Figure 1-4 Generally, the conventional polyolefin sanitary napkin small package 101 generally has only one layer of PE film 102, and then ink 103 is printed on the outer packaging of the PE film, and then a heat-sealing area 104 is set on the small package 101, and then the sanitary napkin 105 is wrapped and encapsulated by using the heat-sealing area 104.

[0034] The conventional polyolefin sanitary napkin small package film 101 uses a PE film of about 23 grams, and has a very high gas permeability, that is, a very poor barrier property, and its oxygen permeability is 1000-10000cm3 / m2.day.atm.

[0035] In order to improve the barrier properties, a high-barrier co-extruded sanitary napkin small package has appeared on the market. From the inside of the packaged object 109 to the outside, a PE film inner layer 106, a high-barrier co-extruded layer 107, and a PE film outer layer 108 are layered in sequence, and ink 103 is printed on the outer packaging of the PE film outer layer 108.

[0036] The oxygen permeability of the high barrier co-extrusion layer 107 is 0.5-3cm3 / m2.day.atm, which can well protect the odor in the bag. However, the high barrier co-extrusion layer 107 generally uses EVOH of about 5g / m2, and the total weight is about 35g, and the cost is still relatively high, reaching ￥35 / Kg.

[0037] Therefore, this embodiment provides a low-cost, high-barrier sanitary napkin small package with an oxygen permeability of 2-5 cm3 / m2.day.atm. close to the highest barrier value of plastic film, which can meet the odor barrier requirements of sanitary napkins.

[0038] refer to Figure 5-8 This embodiment provides a high-barrier sanitary napkin small package, including an outer film 1 and a high-barrier film; the high-barrier film includes a substrate 2 and a high-barrier coating 3; the high-barrier coating 3 is coated on the substrate 2 by coating, and the coating amount of the high-barrier coating 3 is 0.1-2 g / m2; the outer film 1 is attached to the high-barrier film by laminating; or the outer film 1 is attached to the high-barrier film by glue.

[0039] The high barrier coating 3 is a high barrier PVA coating or a PVDC coating.

[0040] The high barrier coating 3 adopts a coating composite film structure, and has an oxygen permeability of 2-5 cm3 / m2.day.atm, which is close to the highest barrier value of plastic film and can meet the odor barrier requirements of sanitary napkins.

[0041] A high barrier coating 3 is coated on the substrate 2, preferably using high barrier PVA coating, with a dry coating amount of 0.1-2 g / m2 (PVDC coating can also be used).

[0042] The first embodiment, as Figure 5 .

[0043] Provided is a high-barrier sanitary napkin small package film, which comprises a substrate 2, a high-barrier coating 3, an outer film 1 and an ink layer 4 arranged in order from the inside to the outside of a packaged object 6, wherein the ink layer 4 is printed on the outer layer of the outer film 1.

[0044] The substrate 2 is a heat-sealable BOPP / PET / PE film as a heat-sealable coating substrate, preferably a 4-16 g / m2 BOPP (or PET or PE) film with heat-sealability on at least one side.

[0045] The high barrier coating 3 is a coating of a high barrier material on the substrate 2, preferably a high barrier PVA coating, with a dry coating amount of 0.1-2 g / m2 (PVDC coating can also be used). The heat sealing surface should be a non-coated surface to facilitate sealing and bag making.

[0046] On the surface coated with high barrier coating 3, a PE layer is applied on it by laminating to form an outer film 1 to improve the hand feel and heat sealing properties (weight is 5-20 g / m2). The laminating PE film is a white outer film 1. At the same time, matte embossing is applied to enhance the elegant appearance. The PE layer can also be laminated with the coated substrate by gluing the PE finished film.

[0047] The gram weight of the high barrier sanitary napkin small package film can be reduced to 25g / m2. The selection of heat-resistant and high-strength materials such as PET / BOPP is more conducive to positioning printed small package products and partially coated with silicone release small package films.

[0048] The PE surface is usually placed on the outside of the packaging bag of the small film to obtain a better hand feel. The PE surface can also be placed inside the packaging bag to obtain a better heat seal strength. PE materials can also be used inside and outside to achieve the benefits of hand-feel heat seal / sandwich ink.

[0049] The second embodiment, as Figure 6 .

[0050] On the basis of the first embodiment, the outer film 1 is a laminated transparent PE film, and the substrate 2 is a heat-sealable BOPP / PET / PE film. The ink layer 4 is printed on the inner layer.

[0051] The printing ink layer 4 is interlayered so that the ink is not directly contacted, reducing pollution and discoloration problems. A white bottom layer is arranged between the ink layer 4 and the high barrier coating 3, and the addition of a white bottom layer can make the ink layer 4 more colorful.

[0052] The third embodiment, as Figure 7 .

[0053] On the basis of the first embodiment, the outer film 1 is a laminated transparent PE film, and the substrate 2 is a heat-sealable BOPP / PET / PE film. The ink layer 4 is printed on the inner layer and printed on the lower layer of the high barrier coating 3, and is disposed between the high barrier coating 3 and the substrate 2.

[0054] A white bottom layer is disposed between the ink layer 4 and the substrate 2 , and the addition of the white bottom layer can make the ink layer 4 more colorful.

[0055] The fourth embodiment, as Figure 8 .

[0056] On the basis of the first embodiment, the original inner and outer layer substrate 2 and outer layer film 1 are used in reverse, and the inner layer film PE21, composite glue layer 5, high barrier coating 3 and outer layer substrate 11 are sequentially layered from the inside of the packaged object 6 to the outside.

[0057] The outer layer substrate 11 is formed with the outer layer film 1 as the substrate. The outer layer substrate 11 is made of a transparent heat-sealable BOPP / PET / PE film. A high barrier coating 3 is coated on the inner side of the outer layer substrate 11. An ink layer 4 is printed on the coating surface, and a white PE film is coated on the ink layer.

[0058] The printing ink layer 4 is interlayered so that the ink is not directly contacted, reducing pollution and discoloration problems. In addition, a white masterbatch is added to the laminating film, and the white base can make the ink layer 4 more colorful.

[0059] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A high barrier sanitary napkin small envelope, characterized in that: It includes an outer film and a high barrier film; the high barrier film includes a substrate and a high barrier coating; The substrate is a heat-sealable BOPP / PET / PE film; The high barrier coating is a high barrier PVA coating or a PVDC coating; The high barrier coating is coated on the substrate in a coating manner, and the coating amount of the high barrier coating is 0.1-2 g / m2; The outer film is attached to the high barrier film by laminating; or the outer film is attached to the high barrier film by glue.

2. A high barrier sanitary napkin small envelope according to claim 1, characterized in that: The outer film is a PP or PE film or a non-woven fabric.

3. A high barrier sanitary napkin small envelope according to claim 1, characterized in that: Also includes a printing ink layer.

4. A high barrier sanitary napkin small envelope according to claim 3, characterized in that: The ink layer is printed on the outer layer of the outer film.

5. The high barrier sanitary napkin small envelope according to claim 1, characterized in that: The outer film and the substrate can be used in reverse, with the substrate facing outwards and the high barrier coating and ink disposed between the outer film and the substrate.

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