Degradable tear-resistant non-woven fabric

Abstract

The utility model discloses a degradable anti-tear non-woven fabric, which relates to the field of non-woven fabrics, and comprises a skin-friendly layer, an anti-tear layer and a base layer, first salient points and second salient points are formed on the anti-tear layer, the number of the first salient points and the number of the second salient points are gradually reduced from the outer edge of the anti-tear layer to the center, so that the anti-tear performance is increased, and the anti-tear layer is formed on the base layer. Through the mode that the first convex points and the second convex points are gradually sparse from the outer edges to the centers, irregular and uneven three-dimensional structures are formed on the upper surface and the lower surface of the anti-tearing layer, fibers of the anti-tearing layer are mutually interwoven more tightly at the concave-convex positions, the friction force and the binding force between the fibers are increased, and when the anti-tearing layer is pulled by external force, the anti-tearing layer is not prone to falling off. The tensile force can be better dispersed, and the degradable non-woven fabric is not easy to tear, so that the technical problem of poor tear resistance of the degradable non-woven fabric is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of non - woven fabric, concretely is a kind of degradable tear-resistant non - woven fabric. BACKGROUND

[0002] In recent years, with the rapid development of economy, people's pursuit of quality of life gradually increases, and non-woven fabric products (such as facial mask, wash towel, makeup remover, wet toilet paper and the like) become an important role in daily life, and the non-woven fabric as a wash towel or wet wipe usually adopts synthetic fiber non-woven fabric, which is convenient to produce and structurally firm, but is not easy to degrade in soil environment, and is easy to pollute the environment after being discarded at will. With the increasing environmental awareness of people, non-woven fabric develops towards green and environmental protection, and degradable non-woven fabric material emerges as the times require, and people use degradable polylactic acid to manufacture non-woven fabric to reduce environmental pollution. However, the cost of degradable polylactic acid non-woven fabric is high, in order to reduce the cost, it is necessary to reduce the thickness of degradable polylactic acid non-woven fabric, which leads to low strength of non-woven fabric and poor tear resistance, and the non-woven fabric is easy to deform and break during use, which affects the use experience, so a degradable tear-resistant non-woven fabric is needed. SUMMARY

[0003] Therefore, the utility model aims at providing a kind of degradable tear-resistant non-woven fabric to solve the technical problem of poor tear resistance of non-woven fabric.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A kind of degradable tear-resistant non-woven fabric, including skin layer and base layer, tear-resistant layer is fixed between the base layer and skin layer, first convex point is formed on the side of tear-resistant layer fixed with skin layer, second convex point is formed on the side of tear-resistant layer fixed with base layer, first convex point and second convex point are staggered, the number of first convex point and second convex point gradually decreases from the outer edge of tear-resistant layer to the center.

[0006] Preferably, the first convex point and the second convex point are hemispherical.

[0007] Preferably, the first convex point and the second convex point are symmetrically arranged along the central axis in the length direction of the tear-resistant layer.

[0008] Preferably, the size of the first convex point and the second convex point gradually increases from the outer edge of the tear-resistant layer to the center.

[0009] Preferably, the skin layer, the base layer and the tear-resistant layer are made of degradable polylactic acid non-woven fabric.

[0010] Preferably, the skin-friendly layer and the base layer have the same thickness, and the tear-resistant layer has a thickness of at least twice that of the skin-friendly layer.

[0011] Preferably, the edge portions are formed with fixed angles by a pressing process.

[0012] In summary, the present application has the following advantages:

[0013] A degradable tear-resistant non-woven fabric comprises a skin-friendly layer, a tear-resistant layer and a base layer, the tear-resistant layer is formed with first protrusions and second protrusions, the number of the first protrusions and the second protrusions gradually decreases from the outer edge to the center of the tear-resistant layer, and has the following advantages:

[0014] First, the tear resistance is increased: the upper and lower surfaces of the tear-resistant layer form irregular and uneven three-dimensional structures by gradually and sparsely arranging the first protrusions and the second protrusions from the outer edge to the center, so that the fibers of the tear-resistant layer are more closely intertwined at the concave and convex parts, the friction and bonding force between the fibers are increased, and the tensile force can be better dispersed when subjected to external force, so that the tear-resistant layer is not easy to tear;

[0015] Second, the water locking effect is increased: the first protrusions and the second protrusions are arranged to form small water storage spaces in the concave parts of the upper and lower surfaces of the tear-resistant layer, thereby increasing the contact area and storage capacity of the non-woven fabric and water, and improving the water locking effect;

[0016] Third, the layers are not easy to separate: the first protrusions and the second protrusions are densely distributed at the edges, and the three-dimensional texture can increase the contact area between the tear-resistant layer and the skin-friendly layer and the base layer, thereby increasing the friction and making the layers more closely combined, so that the layers are not easy to separate, and the edge locking effect can be achieved;

[0017] Fourth, the softness is increased: the first protrusions and the second protrusions are sparsely distributed at the center, which can ensure the softness of the degradable tear-resistant non-woven fabric and improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of a degradable tear-resistant non-woven fabric according to the present application;

[0019] Figure 2 FIG. 3 is a plan view of a tear-resistant layer according to the present application;

[0020] Figure 3 FIG. 5 is a sectional structural schematic view of a tear-resistant layer according to the present application;

[0021] Figure 4 FIG. 7 is a plan view of a degradable tear-resistant non-woven fabric according to the present application.

[0022] In the figure: 1, skin-friendly layer; 2, base layer; 3, tear-resistant layer; 4, first protrusion; 5, second protrusion; 6, fixed angle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model and cannot be understood as a limitation on the utility model.

[0024] The embodiments will be described below according to the overall structure of the utility model.

[0025] A degradable tear-resistant non-woven fabric comprises a skin-friendly layer 1 and a base layer 2, a tear-resistant layer 3 is fixed between the base layer 2 and the skin-friendly layer 1, a first protrusion 4 is formed on one side of the tear-resistant layer 3 fixed with the skin-friendly layer 1, a second protrusion 5 is formed on one side of the tear-resistant layer 3 fixed with the base layer 2, the first protrusion 4 and the second protrusion 5 are arranged alternately, the number of the first protrusion 4 and the second protrusion 5 gradually decreases from the outer edge of the tear-resistant layer 3 to the center, and has the following advantages:

[0026] First, the tear resistance is increased: the upper and lower surfaces of the tear-resistant layer 3 form irregular and uneven three-dimensional structures through the arrangement of the first protrusion 4 and the second protrusion 5 from the outer edge to the center, the fibers of the tear-resistant layer 3 are more closely interwoven at the concave and convex parts, the friction and bonding force between the fibers are increased, and the tensile force can be better dispersed when subjected to external force, so that the tear-resistant layer 3 is not easy to tear;

[0027] Second, the water locking effect is increased: the first protrusion 4 and the second protrusion 5 are arranged to form small water storage spaces in the concave parts of the upper and lower surfaces of the tear-resistant layer 3, the contact area and storage capacity of the non-woven fabric and water are increased, and thus the water locking effect is improved;

[0028] Third, the layers are not easy to separate: the first protrusion 4 and the second protrusion 5 are densely distributed at the edges, the contact area between the tear-resistant layer 3 and the skin-friendly layer 1 and the base layer 2 can be realized through the three-dimensional texture, the friction force is increased, the layers are more closely combined, and the phenomenon of layer separation is not easy to occur, that is, the edge locking effect can be realized;

[0029] Fourth, the softness is increased: the first protrusion 4 and the second protrusion 5 are sparsely distributed at the center, the softness of the degradable tear-resistant non-woven fabric can be ensured, and the customer's use feeling is improved.

[0030] Specifically, the first convex point 4 and the second convex point 5 are hemispherical, capable of increasing the tightness between layers, the first convex point 4 and the second convex point 5 are symmetrically arranged along the central axis in the length direction of the anti-tearing layer 3, the size of the first convex point 4 and the second convex point 5 gradually increases from the edge to the center of the anti-tearing layer 3, which can make the edge more firmly fit, and the center part has a soft and fluffy feeling.

[0031] Specifically, the skin-friendly layer 1, the base layer 2 and the anti-tearing layer 3 all adopt degradable polylactic acid non-woven fabric, so as to realize degradability, dispersible performance, safety to human body and health benefits. It is a natural renewable plant resource, which reduces the dependence on traditional petroleum resources and meets the requirements of international sustainable development, and has the advantages of synthetic fibers and natural fibers, and has the characteristics of completely natural circulation and biodegradation.

[0032] Specifically, the skin-friendly layer 1 and the base layer 2 have the same thickness, and the thickness of the anti-tearing layer 3 is at least 2 times that of the skin-friendly layer 1, which further reduces the production cost under the condition of ensuring degradability, anti-tearing, softness and water locking.

[0033] Specifically, the edge position is formed with a fixed angle 6 by pressing and ironing treatment, which further enables the multi-layer to be more firmly connected together and further improves the anti-tearing property.

[0034] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A biodegradable tear-resistant nonwoven fabric, comprising a skin-friendly layer (1) and a base layer (2), characterized in that: A tear-resistant layer (3) is fixed between the base layer (2) and the skin-friendly layer (1). A first protrusion (4) is formed on the side of the tear-resistant layer (3) that is fixed to the skin-friendly layer (1), and a second protrusion (5) is formed on the side of the tear-resistant layer (3) that is fixed to the base layer (2). The first protrusion (4) and the second protrusion (5) are staggered, and the number of the first protrusion (4) and the second protrusion (5) gradually decreases from the outer edge of the tear-resistant layer (3) towards the center.

2. The biodegradable tear-resistant nonwoven fabric according to claim 1, characterized in that: The first protrusion (4) and the second protrusion (5) are hemispherical.

3. The biodegradable tear-resistant nonwoven fabric according to claim 1, characterized in that: The first protrusion (4) and the second protrusion (5) are symmetrically arranged along the central axis of the length direction of the tear-resistant layer (3).

4. The biodegradable tear-resistant nonwoven fabric according to claim 1, characterized in that: The size of the first protrusion (4) and the second protrusion (5) gradually increases from the outer edge of the tear-resistant layer (3) towards the center.

5. The biodegradable tear-resistant nonwoven fabric according to claim 1, characterized in that: The skin-friendly layer (1), the base layer (2), and the tear-resistant layer (3) are all made of biodegradable polylactic acid nonwoven fabric.

6. The biodegradable tear-resistant nonwoven fabric according to claim 1, characterized in that: The skin-friendly layer (1) and the base layer (2) have the same thickness, and the thickness of the tear-resistant layer (3) is at least twice that of the skin-friendly layer (1).

7. The biodegradable tear-resistant nonwoven fabric according to claim 1, characterized in that: Its edges are formed by hot pressing to create fixed corners (6).

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