An anti-slip bottom film type nursing pad and a method of manufacturing the same

Abstract

The present application relates to the technical field of sanitary product production, and provides a slip-resistant bottom film type nursing pad and a preparation method thereof, which solves the defects that the nursing pad produced by the prior art is prone to displacement on a bed, and the nursing pad bottom film is prone to adhesive strip transfer when the adhesive is added; the preparation method comprises preparing a surface layer, preparing a core layer, and preparing a slip-resistant bottom film layer.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary product production, in particular to an anti-slip base film type nursing pad and a preparation method thereof. Background Art

[0002] Adult nursing pads are a common hygiene product for adults. Their function is to absorb and control urine and other body fluids, preventing leakage, thereby keeping the skin clean and dry and reducing the risk of infection. Nursing pads are often laid flat on the bed during use. The base film is smoother than non-woven or knitted fabrics, making them prone to shifting on the bed. Common solutions include: ① Adding adhesive backing; ② Adding embossing to the base film.

[0003] Patent No. CN202120656602.8 discloses a disposable sterile nursing pad, comprising a nursing pad body, the nursing pad body including an absorption zone located in the middle and a fixed zone located at the edge. The front of the absorption zone has a grid-shaped diversion embossing and a closed-loop flow-blocking embossing, the flow-blocking embossing being distributed at the edge of the absorption zone and located outside the diversion embossing; the back of the fixed zone is provided with an adhesive backing, the surface of which is covered with a protective film. The nursing pad is attached to the bed surface and is not prone to wrinkling, deformation, and side leakage during use, making it easy to use. However, long-term laying and pressing can easily cause the adhesive strip in the adhesive backing to transfer, and consumer demand for solutions with additional adhesive backing is relatively low. During consumer surveys, only less than 40% of people expressed a preference for products with adhesive backing. For those who do not want to use adhesive backing, the presence of adhesive backing and release paper not only does not increase convenience, but instead brings a poor consumer experience. Summary of the Invention

[0004] Therefore, in response to the above problems, the present invention provides a non-slip base film type nursing pad and a preparation method thereof, which solves the defects that the nursing pads produced by the prior art are prone to shifting when used on the bed, and the adhesive strip is easily transferred when the base film of the nursing pad is added with adhesive.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for preparing a non-slip base film type nursing pad includes preparing a surface layer, preparing a core layer, and preparing a non-slip base film layer. The process of preparing the non-slip base film layer is as follows:

[0007] (1) Selection of raw materials for the anti-skid film layer A: The raw materials for the anti-skid film layer A include the following components in parts by weight: 30-33 parts of LDPE, 30-33 parts of LLDPE, 38-40 parts of HDPE, 8-10 parts of masterbatch, and 10-12 parts of heavy CaCO3;

[0008] (2) The selection of the anti-skid film B layer raw material: the anti-skid film B layer raw material includes the following components in parts by weight: 30-33 parts of LDPE, 35-38 parts of LLDPE, 35-38 parts of HDPE, 8-10 parts of color master batch, 10-12 parts of heavy CaCO3, 2.5-3.5 parts of SIS, and 1.5-2.5 parts of EVA;

[0009] (3) The anti-skid film A layer raw material is sent into the first screw extruder, melted and extruded, sent into the first flow channel, and then sent into the casting machine for casting to obtain the anti-skid film A layer.

[0010] (4) The anti-skid film B layer raw material is sent into the second screw extruder, melted and extruded, sent into the second flow channel, and then sent into the casting machine for casting to obtain the anti-skid film B layer.

[0011] (5) The anti-skid film A layer and the anti-skid film B layer are compounded to obtain the anti-skid bottom film layer.

[0012] In the step (3) and the step (4), a blocking device is arranged between the first flow channel and the second flow channel to form independent flow channels for the first flow channel and the second flow channel.

[0013] Further, the specific process of the step (5) is that the anti-skid film A layer and the anti-skid film B layer are synchronously transported, the anti-skid film A layer is above the anti-skid film B layer, and the anti-skid film A layer and the anti-skid film B layer are stacked in the longitudinal direction after compounding.

[0014] Further, the specific process of the step (5) is that the anti-skid film A layer and the anti-skid film B layer are synchronously transported, the anti-skid film A layer is above the anti-skid film B layer, and the anti-skid film A layer and the anti-skid film B layer are stacked in the longitudinal direction after compounding.

[0015] Further, the temperature of the first screw extruder and the second screw extruder is controlled at 200-230°C, and the temperature of the first flow channel and the second flow channel is controlled at 220-240°C.

[0016] Further, the anti-skid bottom film layer obtained in the step (5) is further processed by a screen roller to obtain a pattern on the bottom surface of the anti-skid film B layer.

[0017] Further, the screen roller is composed of a screen top convex roller and a screen bottom concave roller, the screen top convex roller is uniformly provided with protrusions with a first pattern on the circumferential side, the screen bottom concave roller is provided with grooves matched with the protrusions on the circumferential side, and the grooves are provided with a second pattern consistent with the first pattern.

[0018] Further, the first pattern is in a wave shape.

[0019] Further: further comprising cutting the anti-skid film B layer obtained in step (4), and then compounding the cut anti-skid film B layer to both sides of the anti-skid film A layer obtained in step (3).

[0020] Further: the width of the anti-skid film B layer on both sides of the anti-skid film A layer is 40-100mm.

[0021] Further: the friction coefficient of the anti-skid film A layer is ≤0.8, and the friction coefficient of the anti-skid film B layer is 1.5-1.8.

[0022] Further: the width of the anti-skid film B layer is 600-800mm, and the total width of the lines on the anti-skid film B layer is 500-600mm.

[0023] Further: the surface layer is a non-woven fabric layer, and the core layer is a fluff pulp and high molecular water-absorbing resin composite structure layer.

[0024] A kind of anti-skid bottom film type nursing pad, including surface layer, core layer and anti-skid bottom film layer from top to bottom sequentially stacked, the anti-skid bottom film layer is compounded by anti-skid film A layer and anti-skid film B layer.

[0025] Further: the anti-skid film B layer is arranged on the bottom surface of the anti-skid film A layer.

[0026] Further: the anti-skid film B layer is arranged on both sides of the anti-skid film A layer.

[0027] Further: the anti-skid film B layer is arranged on the circumferential side of the protective film A layer.

[0028] Further: the bottom surface of the anti-skid film B layer is provided with lines.

[0029] Further: the lines are wave-shaped.

[0030] By adopting the foregoing technical scheme, the beneficial effects of the present application are:

[0031] 1. The anti-skid bottom film type nursing pad prepared by the method of the present application can effectively solve the problem of easy displacement of the nursing pad. The designed nursing pad includes a surface layer, a core layer and an anti-skid bottom film layer, wherein the anti-skid bottom film layer includes an anti-skid film A layer and an anti-skid film B layer. The traditional single-layer casting process is optimized to a double-layer casting composite process, and the raw materials and proportions of the two layers of materials are designed respectively to finally form a double-layer composite bottom film with different friction coefficients. In addition, lines are designed on the anti-skid film B layer material to form wave-shaped lines of different sizes, thereby increasing the friction coefficient of the B layer. The friction coefficient of the anti-skid film A layer is 0.5-0.8, and the friction coefficient of the anti-skid film B layer is 1.5-1.8.

[0032] 2. The anti-slip base film type nursing pad prepared by the present invention has an anti-slip base film layer A and an anti-slip base film layer B with different friction coefficients, so that when used, they have different friction coefficients with the contact surface and are less likely to shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Is a schematic structural diagram of an embodiment of the present invention, a non-slip bottom film type nursing pad;

[0034] Figure 2 The layout structure of the wavy lines in the first embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the combined structure of the anti-skid film layer A and the anti-skid film layer B in the second embodiment of the present invention. DETAILED DESCRIPTION Example 1

[0036] refer to Figures 1 to 2 A method for preparing a non-slip base film type nursing pad includes preparing a surface layer, preparing a core layer, and preparing a non-slip base film layer. The process of preparing the non-slip base film layer is as follows:

[0037] (1) Selection of raw materials for the anti-slip film layer A: The raw materials for the anti-slip film layer A include the following components in parts by weight: 30 parts of LDPE, 30 parts of LLDPE, 38 parts of HDPE, 8 parts of masterbatch, and 10 parts of heavy CaCO3;

[0038] (2) Selection of raw materials for the anti-slip film layer B: The raw materials for the anti-slip film layer B include the following components in parts by weight: 30 parts of LDPE, 35 parts of LLDPE, 35 parts of HDPE, 8 parts of masterbatch, 10 parts of heavy CaCO3, 2.5 parts of SIS, and 1.5 parts of EVA;

[0039] (3) The raw material of the anti-skid film layer A is fed into the first screw extruder, and after melt extrusion, is fed into the first flow channel, and then fed from the first flow channel into the casting machine for casting to obtain the anti-skid film layer A;

[0040] (4) The raw material of the anti-skid film layer B is fed into the second screw extruder, and after melt extrusion, is fed into the second flow channel, and then fed from the second flow channel into the casting machine for casting to obtain the anti-skid film layer B;

[0041] (5) The anti-skid film layer B obtained in step (4) is transported and composited with the anti-skid film layer A transported online to obtain an anti-skid bottom film layer having the anti-skid film layer A on top and the anti-skid film layer B below the anti-skid film layer A;

[0042] (6) The anti-skid bottom film layer obtained in step (5) is processed by an anilox roller so that the bottom surface of the anti-skid film layer B has texture.

[0043] In step (3) and step (4), a barrier device is provided between the first flow channel and the second flow channel, so that the first flow channel and the second flow channel each form an independent flow channel. The temperature of the first screw extruder and the second screw extruder is controlled at 200°C, and the temperature of the first flow channel and the second flow channel is controlled at 220°C.

[0044] Among them, the anilox roller is composed of an anilox upper convex roller and an anilox bottom concave roller. The circumferential side of the anilox upper convex roller is evenly distributed with protrusions with a first pattern, and the anilox bottom concave roller is provided with grooves matching the protrusions along the circumferential side, and the grooves are provided with a second pattern consistent with the first pattern.

[0045] Specifically, refer to Figure 2 The first lines are wavy, and the layout structure of the wavy lines is as follows: Figure 2 As shown, there are four areas, upper, lower, left and right, each area has 17 wavy stripes, the spacing between each stripe is 10mm, the total width of the wavy lines is 600mm, and the width of the anti-slip film layer B is 800mm.

[0046] The friction coefficient of the anti-skid film layer A is 0.8, and the friction coefficient of the anti-skid film layer B is 1.5-1.8.

[0047] The surface layer is a hydrophilic non-woven fabric layer, and the core layer is a structural layer formed by compounding fluff pulp and high molecular water-absorbing resin in a ratio of 5:1.

[0048] refer to Figure 1 The anti-slip base film type nursing pad obtained by the above-mentioned anti-slip base film type nursing pad preparation method includes a surface layer 1, a core layer 2 and an anti-slip base film 3 stacked in sequence from top to bottom, the anti-slip base film layer 3 includes an anti-slip film A layer 31 arranged close to the core layer and an anti-slip film B layer 32 arranged on the bottom surface of the anti-slip film A layer 31, and the bottom surface of the anti-slip film B layer 32 is provided with a wavy pattern 4.

[0049] The structural layers are bonded together by spraying hot melt adhesive. Example 2

[0050] Compared with Example 1, the raw materials of the anti-slip film layer A of this embodiment are specifically 32 parts of LDPE, 32 parts of LLDPE, 39 parts of HDPE, 9 parts of masterbatch, and 11 parts of heavy CaCO3; the raw materials of the anti-slip film layer B are specifically 32 parts of LDPE, 37 parts of LLDPE, 37 parts of HDPE, 9 parts of masterbatch, 11 parts of heavy CaCO3, 3 parts of SIS, and 2 parts of EVA.

[0051] In this embodiment, the specific process of laminating the anti-slip film layer A and the anti-slip film layer B is as follows: the anti-slip film layer B is simultaneously conveyed on both sides of the anti-slip film layer A, and after lamination, an anti-slip base film layer is formed with the anti-slip film layer B on both sides and the anti-slip film layer A in the middle. That is, the anti-slip film layer A and the anti-slip film layer B are on the same horizontal plane. Figure 3 The structure of the anti-slip base film layer of this embodiment is as follows: it includes an anti-slip film A layer 31 ′ and anti-slip film B layers 32 ′ arranged on both sides of the anti-slip film A layer.

[0052] Other technical solutions are the same as those in Example 1. Example 3

[0053] Compared with Example 1, the raw materials of the anti-slip film layer A of this embodiment are specifically 33 parts of LDPE, 33 parts of LLDPE, 40 parts of HDPE, 10 parts of masterbatch, and 12 parts of heavy CaCO3; the raw materials of the anti-slip film layer B are specifically: 33 parts of LDPE, 38 parts of LLDPE, 38 parts of HDPE, 10 parts of masterbatch, 12 parts of heavy CaCO3, 3.5 parts of SIS, and 2.5 parts of EVA;

[0054] Other technical solutions are the same as those in Example 1.

[0055] In addition, referring to the table below, the wavy lines on the anilox roller of the present invention can also be designed as follows:

[0056]

[0057] The patterns designed with different parameters in the table above can all produce a non-slip base film layer that is not easily displaced.

[0058] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A method for preparing a non-slip base film type nursing pad, comprising preparing a surface layer, preparing a core layer and preparing a non-slip base film layer, characterized in that: The process of preparing the anti-slip base film layer is as follows: (1) Selection of raw materials for the anti-skid film layer A: The raw materials for the anti-skid film layer A include the following components in parts by weight: 30-33 parts of LDPE, 30-33 parts of LLDPE, 38-40 parts of HDPE, 8-10 parts of masterbatch, and 10-12 parts of heavy CaCO3; (2) Selection of raw materials for the anti-slip film layer B: The raw materials for the anti-slip film layer B include the following components in parts by weight: 30-33 parts of LDPE, 35-38 parts of LLDPE, 35-38 parts of HDPE, 8-10 parts of masterbatch, 10-12 parts of heavy CaCO3, 2.5-3.5 parts of SIS, and 1.5-2.5 parts of EVA; (3) The raw material of the anti-skid film layer A is fed into the first screw extruder, and after melt extrusion, is fed into the first flow channel, and then fed from the first flow channel into the casting machine for casting to obtain the anti-skid film layer A; (4) The raw material of the anti-skid film layer B is fed into the second screw extruder, and after melt extrusion, is fed into the second flow channel, and then fed from the second flow channel into the casting machine for casting to obtain the anti-skid film layer B; (5) The anti-slip film layer A is compounded with the anti-slip film layer B to obtain an anti-slip base film layer; In step (3) and step (4), a barrier device is provided between the first flow channel and the second flow channel, so that the first flow channel and the second flow channel each form an independent flow channel.

2. The method for preparing a non-slip base film type nursing pad according to claim 1, characterized in that: The specific process of compounding the anti-skid film layer A and the anti-skid film layer B in step (5) is as follows: the anti-skid film layer A and the anti-skid film layer B are conveyed synchronously, the anti-skid film layer A is above the anti-skid film layer B, and after compounding, the anti-skid film layer A and the anti-skid film layer B are obtained, which are stacked in the longitudinal direction.

3. The method for preparing a non-slip base film type nursing pad according to claim 1, characterized in that: The specific process of compounding the anti-skid film layer A and the anti-skid film layer B in step (5) is as follows: the anti-skid film layer B is conveyed to both sides of the anti-skid film layer A simultaneously, and after compounding, an anti-skid base film layer is formed with the anti-skid film layer B on both sides and the anti-skid film layer A in the middle.

4. The method for preparing a non-slip base film type nursing pad according to claim 1, characterized in that: The temperature of the first screw extruder and the second screw extruder is controlled at 200-230°C, and the temperature of the first flow channel and the second flow channel is controlled at 220-240°C.

5. The method for preparing a non-slip base film type nursing pad according to any one of claims 1 to 4, characterized in that: The anti-skid bottom film layer obtained in step (5) is further processed by anilox roller so that the bottom surface of the anti-skid film layer B has texture.

6. The method for preparing a non-slip base film type nursing pad according to claim 5, characterized in that: The anilox roller is composed of an anilox upper convex roller and an anilox bottom concave roller. The anilox upper convex roller is evenly distributed with protrusions with a first pattern on the circumferential side surface, and the anilox bottom concave roller is provided with grooves matching the protrusions along the circumferential side surface, and the grooves are provided with second patterns consistent with the first patterns.

7. The method for preparing a non-slip base film type nursing pad according to claim 6, characterized in that: The first lines are wavy.

8. The method for preparing a non-slip base film type nursing pad according to claim 5, characterized in that: The width of the anti-slip film B layers on both sides of the anti-slip film A layer is 40-100 mm.

9. The method for preparing a non-slip base film type nursing pad according to claim 1, characterized in that: The friction coefficient of the anti-skid film layer A is ≤0.8, and the friction coefficient of the anti-skid film layer B is 1.5-1.

8.

10. The method for preparing a non-slip bottom film type nursing pad according to claim 1, characterized in that: The width of the anti-slip film layer B is 600-800 mm, and the total width of the lines on the anti-slip film layer B is 500-600 mm.

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