Wave-shaped telescopic structure applied to waistline of paper diaper

Abstract

The wavy telescopic structure comprises an elastic non-woven fabric layer and a first breathable surface layer, the elastic non-woven fabric layer and the first breathable surface layer are bonded and fixed, and the first breathable surface layer forms a wavy fluctuating structure facing one side of a human body through hot pressing. A breathable cavity is formed between the first breathable surface layer and the elastic non-woven fabric layer, wave crest parts on the first breathable surface layer make contact with the surface of the human body, the wave crest parts have soft touch feeling and good breathable and moisture absorption performance, friction to the skin is reduced, and when the wave crest parts are subjected to the pressure effect, the elastic non-woven fabric layer is not prone to falling off. A comfortable fitting degree is formed between the wave crest part and the waist of the human body, so that excellent telescopic adaptability is achieved, the fitting degree with the human body can be automatically adjusted according to the dynamic change of the waist of an individual and the change of external pressure, and the wearing comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of absorbent products, in particular to a wave-shaped telescopic structure applied to the waist of a diaper. Background Art

[0002] Baby diapers are disposable sanitary products for babies, in which the elastic waist is an important part of diapers, which affects the comfort of wearing diapers. Currently on the market, conventional baby diapers are made of double-layer non-woven fabrics, which are divided into a front elastic waist area, a crotch area and a rear elastic waist area in sequence. The front elastic waist area and the rear elastic waist area are both provided with multiple waist elastic bands. The size of the waist is often expanded and contracted by the elasticity of the elastic bands. The force of the elastic bands on the baby's waist skin will cause obvious marks on the baby's waist, affecting the comfort of the baby wearing it. Utility Model Content

[0003] In view of the technical defects existing in the background technology, the utility model proposes a wave-shaped telescopic structure applied to the waist of a diaper, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0004] A wavy telescopic structure applied to the waist of a diaper comprises an elastic non-woven fabric layer and a first breathable surface layer, wherein the elastic non-woven fabric layer and the first breathable surface layer are stacked and bonded together in a thickness direction, and wave-like undulating peaks are arranged at equal intervals in a width direction of the first breathable surface layer, and a trough is arranged between two adjacent peaks, an adhesive layer is arranged between the elastic non-woven fabric layer and the first breathable surface layer at positions corresponding to the troughs, and a breathable cavity is formed between the elastic non-woven fabric layer and the first breathable surface layer corresponding to the peaks, and a soft layer, a wear-resistant layer and an anti-stretching layer are arranged in sequence from outside to inside in a thickness direction of the first breathable surface layer, and a modified layer is arranged on the end face of the elastic non-woven fabric layer facing the first breathable surface layer.

[0005] As an improvement of the above solution, the soft layer is formed by one or two fibers of viscose fiber and polyamide fiber interwoven in the longitudinal and transverse directions to form a fiber web, and both side end surfaces of the soft layer are coated with an epoxidized polyamide layer.

[0006] As an improvement of the above solution, the wear-resistant layer is formed by interlacing one or two fibers of polyamide fiber and polyester fiber in the longitudinal and transverse directions to form a fiber web, and both side end surfaces of the wear-resistant layer are coated with a polyol layer.

[0007] As an improvement of the above solution, the stretch-resistant layer is formed by interlacing one or more fibers of polyester fiber, polyamide fiber and spandex fiber in the longitudinal and transverse directions to form a fiber web, and the end surface of the stretch-resistant layer is coated with a polyurethane elastic layer.

[0008] As an improvement of the above scheme, the elastic non-woven fabric layer is formed by one or more fibers of polyester fiber, polyamide fiber, polypropylene fiber and polyurethane fiber interwoven in the longitudinal and transverse directions to form a fiber web, and the two side end surfaces of the elastic non-woven fabric layer are coated with a modified layer.

[0009] As an improvement of the above scheme, the end surface of the elastic non-woven fabric layer facing the human body is provided with a first breathable surface layer, and the end surface away from the human body is provided with a second breathable surface layer, and the first breathable surface layer and the second breathable surface layer are both bonded and fixed to the elastic non-woven fabric layer.

[0010] As an improvement of the above solution, the structure of the second breathable surface layer in the thickness direction is mirror-symmetrical to the structure of the first breathable surface layer in the thickness direction along the elastic non-woven fabric layer.

[0011] The beneficial effects of the utility model are as follows: the elastic non-woven fabric layer is bonded and fixed to the breathable surface layer, the first breathable surface layer is formed into a wave-like undulating structure facing the human body side by hot pressing, a breathable cavity is formed between the first breathable surface layer and the elastic non-woven fabric layer, the wave crest portion on the first breathable surface layer contacts the human body surface, the wave crest portion has a soft touch and good breathability and moisture absorption performance, reduces the friction on the skin, and when subjected to pressure, a comfortable fit is formed between the wave crest portion and the human waist circumference, has excellent elastic adaptability, can self-adjust the fit between the human body according to the dynamic changes of the individual waist circumference and the external pressure changes, and increases the comfort of wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the elastic nonwoven fabric and the first breathable surface layer structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the structure of the first breathable surface layer, the second breathable surface layer and the elastic non-woven fabric of the utility model.

[0014] Figure 3 This is a schematic diagram of the elastic nonwoven fabric of the utility model and its structure in the thickness direction.

[0015] Figure 4 It is a schematic diagram of the structure of the first air-permeable surface layer in the thickness direction of the utility model.

[0016] Among them: elastic non-woven fabric layer 1, first breathable surface layer 2, soft layer 201, wear-resistant layer 202, tensile resistance layer 203, peak part 3, trough part 4, adhesive layer 5, second breathable surface layer 6, epoxidized polyamide layer 7, polyurethane elastic layer 8, polyol layer 9, modified layer 10. DETAILED DESCRIPTION

[0017] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0018] like Figures 1 to 4 As shown, a wavy telescopic structure applied to the waist of a diaper comprises an elastic non-woven fabric layer 1 and a first breathable surface layer 2, wherein the elastic non-woven fabric layer 1 and the first breathable surface layer 2 are stacked and bonded together in a thickness direction, and wave-like undulating peaks 3 are arranged at equal intervals along the width direction of the first breathable surface layer 2, and a trough 4 is arranged between two adjacent peaks 3, and an adhesive layer 5 is arranged between the elastic non-woven fabric layer 1 and the first breathable surface layer 2 at a position corresponding to the trough 4, and a breathable cavity is formed between the elastic non-woven fabric layer 1 and the first breathable surface layer 2 corresponding to the peaks 3, and a soft layer 201, a wear-resistant layer 202 and an anti-stretching layer 203 are arranged in sequence from outside to inside along the thickness direction of the first breathable surface layer 2, and a modified layer 10 is arranged on the end face of the elastic non-woven fabric layer 1 facing the first breathable surface layer 2.

[0019] like Figure 1 As shown, in the structure of the utility model, the elastic non-woven fabric layer 1 and the first breathable surface layer 2 are composited to form a wavy telescopic structure, the first breathable surface layer 2 is arranged on the end surface of the elastic non-woven fabric layer 1 close to the human body, the first breathable surface layer 2 is formed by hot pressing to form a crest portion 3 protruding toward the human body side, and a trough portion 4 is formed between two adjacent crest portions 3, the elastic non-woven fabric layer 1 and the first breathable surface layer 2 are compositely fixed by an adhesive layer 5 arranged at the position of the trough portion 4, when subjected to external pressure, the crest portion 3 is deformed by force to resist and fit on the surface of the human body, and the shape of fitting with the human body is changed according to the pressure, which can effectively relieve the pressure on the surface of the human body;

[0020] like Figure 3 and Figure 4As shown, in the utility model, on the structure of the first breathable surface layer 2, a soft layer 201, a wear-resistant layer 202 and an anti-stretching layer 203 are stacked along the thickness direction of the first breathable surface layer 2, wherein the soft layer 201 is arranged on the side of the first breathable surface layer 2 facing the human body, thereby improving the comfort of the first breathable surface layer 2 when in contact with the human body, and the anti-stretching layer 203 is arranged on the side of the first breathable surface layer 2 facing the elastic non-woven fabric layer 1, thereby improving the tensile strength and elasticity of the first breathable surface layer 2, so that the first breathable surface layer 2 has a bubble-like elastic touch, and the wear-resistant layer 202 is sandwiched between the soft layer 201 and the anti-stretching layer 203, thereby enhancing the mechanical properties of the non-woven fabric, and contributing to improving the tear resistance and durability of the first breathable surface layer 2.

[0021] Furthermore, in the above scheme, the soft layer 201 is formed into a fiber mesh by interweaving one or two fibers of viscose fiber and polyamide fiber in the longitudinal and transverse directions, and the end faces of both sides of the soft layer 201 are coated with an epoxidized polyamide layer 7, wherein the connection method between the epoxidized polyamide layer 7 and the soft layer 201 also includes melt mixing and lamination, which can improve the feel and ductility of the non-woven fabric, so that the first breathable surface layer 2 increases its toughness and durability while maintaining its softness.

[0022] Furthermore, in the above scheme, the wear-resistant layer 202 is formed by one or two fibers of polyamide fiber and polyester fiber interwoven in the longitudinal and transverse directions to form a fiber mesh, and the end faces of both sides of the wear-resistant layer 202 are coated with a polyol layer 9, wherein the polyol in the polyol layer 9 acts as a curing agent and reaction intermediary, and can react with epoxidized polyamide to form a cross-linked structure, thereby enhancing the mechanical properties of the non-woven fabric, and helping to improve the wear resistance, tear resistance and durability of the first breathable surface layer 2.

[0023] Furthermore, in the above scheme, the anti-stretch layer 203 is formed by one or more fibers of polyester fiber, polyamide fiber and spandex fiber interwoven in the longitudinal and transverse directions to form a fiber mesh, and the end surface of the anti-stretch layer 203 is coated with a polyurethane elastic layer 8, wherein the connection method between the polyurethane elastic layer 8 and the anti-stretch layer 203 also includes fiber mixing and lamination, which can enhance the stretchability and elasticity of the non-woven fabric. When in use, after the first breathable surface layer 2 is in contact with the surface of the human body, the elastic force of the anti-stretch layer 203 acts on the peak part 3, so that the peak part 3 has a certain elastic force in the convex direction, and can be reset and ejected after being deformed by force, thereby avoiding the first breathable surface layer 2 from wrinkling and affecting local comfort.

[0024] Furthermore, in the above scheme, the elastic non-woven fabric layer 1 is formed by one or more fibers of polyester fibers, polyamide fibers, polypropylene fibers and polyurethane fibers being interwoven in the longitudinal and transverse directions to form a fiber web, and the two side end surfaces of the elastic non-woven fabric layer 1 are coated with a modified layer 10, wherein the modified layer 10 is a polypropylene thermoplastic elastomer or a thermoplastic polyurethane.

[0025] like Figure 2 As shown, further, in another embodiment of the utility model, a first breathable surface layer 2 is provided on the end surface of the elastic non-woven fabric layer 1 facing the human body, and a second breathable surface layer 6 is provided on the end surface away from the human body, the first breathable surface layer 2 and the second breathable surface layer 6 are both bonded and fixed to the elastic non-woven fabric layer 1, and the first breathable surface layer 2 and the second breathable surface layer 6 respectively form a wavy undulating structure on the end surfaces on both sides of the elastic non-woven fabric, wherein the first breathable surface layer 2 is closer to the human body than the second breathable surface layer 6, and the elastic force of the waistline during use passes through the second breathable surface layer 6 and the first breathable surface layer 2 in turn and acts on the human body, which relieves the pressure on the user's skin to a greater extent, and the air circulation gap between the first breathable surface layer 2 and the human body is larger, which can effectively avoid the occurrence of stuffiness.

[0026] Furthermore, in the above solution, the structure of the second breathable surface layer 6 in the thickness direction is mirror-symmetrical to the structure of the first breathable surface layer 2 in the thickness direction along the elastic non-woven fabric layer 1 .

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wave-shaped telescopic structure applied to the waist of a diaper, characterized in that: The invention comprises an elastic non-woven fabric layer (1) and a first breathable surface layer (2), wherein the elastic non-woven fabric layer (1) and the first breathable surface layer (2) are stacked and bonded together in a thickness direction, and wave-like undulating peaks (3) are provided at equal intervals along the width direction of the first breathable surface layer (2), and a trough (4) is provided between two adjacent peaks (3), and an adhesive layer (5) is provided between the elastic non-woven fabric layer (1) and the first breathable surface layer (2) at positions corresponding to the troughs (4), and a breathable cavity is formed between the elastic non-woven fabric layer (1) and the first breathable surface layer (2) corresponding to the peaks (3), and a soft layer (201), a wear-resistant layer (202) and an anti-stretching layer (203) are provided in sequence from outside to inside along the thickness direction of the first breathable surface layer (2), and a modified layer (10) is provided on the end surface of the elastic non-woven fabric layer (1) facing the first breathable surface layer (2).

2. The wavy telescopic structure used in the waist of a diaper according to claim 1, characterized in that: The soft layer (201) is formed of one or both of viscose fibers and polyamide fibers interwoven in the longitudinal and transverse directions to form a fiber web, and both side end surfaces of the soft layer (201) are coated with an epoxidized polyamide layer (7).

3. The wavy telescopic structure applied to the waist of a diaper according to claim 1, characterized in that: The wear-resistant layer (202) is formed of one or both of polyamide fibers and polyester fibers interwoven in the longitudinal and transverse directions to form a fiber web, and both side end surfaces of the wear-resistant layer (202) are coated with a polyol layer (9).

4. The wavy telescopic structure applied to the waist of a diaper according to claim 1, characterized in that: The stretch-resistant layer (203) is formed of one or more fibers selected from polyester fibers, polyamide fibers and spandex fibers, which are interwoven and arranged in the longitudinal and transverse directions to form a fiber web, and the end surface of the stretch-resistant layer (203) is coated with a polyurethane elastic layer (8).

5. The wave-shaped telescopic structure used in the waist of a diaper according to claim 1, characterized in that: The elastic non-woven fabric layer (1) is formed of one or more fibers selected from polyester fibers, polyamide fibers, polypropylene fibers and polyurethane fibers, which are interwoven and arranged in the longitudinal and transverse directions to form a fiber web, and both side end surfaces of the elastic non-woven fabric layer (1) are coated with a modified layer (10).

6. The wave-shaped telescopic structure used in the waist of a diaper according to claim 1, characterized in that: The end surface of the elastic non-woven fabric layer (1) facing the human body is provided with a first breathable surface layer (2), and the end surface of the elastic non-woven fabric layer (1) facing away from the human body is provided with a second breathable surface layer (6), and the first breathable surface layer (2) and the second breathable surface layer (6) are both bonded and fixed to the elastic non-woven fabric layer (1).

7. The wave-shaped telescopic structure used in the waist of a diaper according to claim 6, characterized in that: The structure of the second breathable surface layer (6) in the thickness direction is mirror-symmetrical to the structure of the first breathable surface layer (2) in the thickness direction along the elastic non-woven fabric layer (1).

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