Elastic composite material and wearing article

Abstract

The elastic composite material and the wearing article have the MD direction, the CD direction and the TD direction which are mutually orthogonal, and along the TD direction, the elastic composite material at least comprises a first elongated non-woven fabric and an elastic film which are mutually compounded; the first elongated non-woven fabric and the elastic film are compounded through a plurality of joint parts which are arranged at intervals in the MD direction to form a plurality of rows and are arranged at intervals in the CD direction to form a plurality of columns; the elastic composite material has flexibility at least in the MD direction and / or the CD direction; in the elastic stretching state, visible through holes are formed in the joint part area of the first stretching non-woven fabric and the elastic film; when the elastic composite material retracts to a natural state, the elastic composite material retracts under the driving of the resilience force of the elastic film in the area outside the joint part; in the natural state, the ratio of the area of the area except the joint part to the total area of the elastic composite material is larger than 85%, and the thickness of the elastic composite material ranges from 0.5 mm to 2 mm. The elastic composite material disclosed by the utility model is smoother in surface and strong in air permeability.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene products, particularly to baby pull-up pants, adult pull-up pants, women's sanitary pants, diapers, and disposable underwear, and specifically to an elastic composite material and wearable items. Background Technology

[0002] like Figure 1 and Figure 2 As shown, the outer body of existing wearable items (such as baby / adult pull-up pants, diapers, etc.) uses an elastic composite material 2'. The elastic composite material 2' is composed of an elongated elastic material 23' fixed between an upper non-woven fabric 21' and a lower non-woven fabric 22'. The elastic material 23' can be spandex yarn, elastic film, or elastic fabric.

[0003] If the elastic material 23' is an elastic membrane, the elastic composite material 2' is prepared by bonding the upper nonwoven fabric 21', the elongated elastic material 23', and the lower nonwoven fabric 22' using a glue-free bonding process (including ultrasonic bonding, hot-pressing bonding, etc.) to form multiple joints 20c'. Around the joints 20c', the elastic material 23' is melted to form openings 20a'. During bonding, the elastic material 23' is typically bonded to the upper nonwoven fabric 21' and the lower nonwoven fabric 22' at an elongation of 200% to 400%.

[0004] When this elastic composite material 2' retracts to its natural state under the influence of the elastic material 23', the elastic material 23' causes the upper nonwoven fabric 21' and the lower nonwoven fabric 22' to retract together, resulting in multiple large convex and concave shrinkage folds formed between the upper nonwoven fabric 21' and the lower nonwoven fabric 22' between two adjacent joints 20c' along the MD direction. These shrinkage folds can be regular or irregular, such as... Figure 1 and Figure 2 As shown.

[0005] The existing elastic composite material 2' has an increased thickness along the TD direction due to the presence of shrinkage wrinkles when it shrinks back to its natural state. The surface of the elastic composite material 2' is not smooth enough. As a result, the elastic waistband of the pull-up pants made using the above-mentioned elastic composite material 2' will appear bulky when worn due to the presence of shrinkage wrinkles.

[0006] In addition, if the elastic material 23' is made of an elastic membrane, the elastic composite material 2' will often be impermeable. Although the air permeability of the elastic composite material 2' can be increased by forming openings 20a' around the joint 20c' using ultrasonic waves, there is still room for improvement. Utility Model Content

[0007] This invention provides an elastic composite material and wearable items to solve the technical problems of insufficient surface smoothness and poor breathability of existing elastic composite materials.

[0008] The technical solution provided by this utility model is as follows:

[0009] One objective of this invention is to provide an elastic composite material having mutually orthogonal MD, CD and TD directions, wherein the MD direction is the flow direction for processing the elastic composite material.

[0010] Along the TD direction, the elastic composite material comprises at least a first elongated nonwoven fabric and an elastic membrane that are compounded together.

[0011] The first elongated nonwoven fabric and the elastic membrane are composited by multiple joints arranged in a plurality of rows along the MD direction and in a plurality of columns along the CD direction.

[0012] The elastic composite material has elasticity at least along the MD direction and / or CD direction; the elastic composite material has a tensile resilience ratio of at least 100%, wherein, in the elastic tensile state, in the joint region, the first elongated nonwoven fabric and the elastic membrane form a visible through hole.

[0013] When the elastic composite material retracts to its natural state, in the area outside the joint, the elastic composite material retracts under the action of the elastic membrane's rebound force; in its natural state, the area outside the joint accounts for more than 85% of the total area of ​​the elastic composite material, and the thickness of the elastic composite material ranges from 0.5 mm to 2 mm.

[0014] In a preferred embodiment, the elastic composite material further comprises a second elongated nonwoven fabric, and the elastic membrane is composited by a plurality of joints arranged in a plurality of rows spaced apart along the MD direction and a plurality of columns spaced apart along the CD direction, sandwiched between the first elongated nonwoven fabric and the second elongated nonwoven fabric.

[0015] In its natural state, the ratio of the width of the joint to the length of the first elongated nonwoven fabric and the second elongated nonwoven fabric between two adjacent joints is greater than 2% and less than 15%.

[0016] In a preferred embodiment, the edge of the joint overlaps at least with the edge of the through hole.

[0017] In a preferred embodiment, the joints are staggered along the MD and CD directions, and the ratio of the floral area of ​​the joints to the total area of ​​the elastic composite material is less than or equal to 10%.

[0018] In a preferred embodiment, the first elongated nonwoven fabric and the second elongated nonwoven fabric are nonwoven fabrics with stretchable properties but no elastic shrinkage properties, and the elongation at break of the first elongated nonwoven fabric and the second elongated nonwoven fabric is less than the elongation at break of the elastic membrane.

[0019] In a preferred embodiment, the breaking elongation of the first elongated nonwoven fabric and the second elongated nonwoven fabric is 80% to 200%.

[0020] In a preferred embodiment, the basis weight range of the first elongated nonwoven fabric and the second elongated nonwoven fabric is 6–30 g / m². 2 The basis weight of the elastic membrane ranges from 15 to 40 g / m³. 2 .

[0021] In a preferred embodiment, the first and second elongated nonwoven fabrics are elongated nonwoven fabrics made of elongated fibers or elongated resins or elongation processes.

[0022] In a preferred embodiment, the flexural stiffness of the elastic composite material in its natural state ranges from 1 to 40 mg / cm.

[0023] In a preferred embodiment, the floral structure of the plurality of joints is any one or any combination of two or more of the following shapes: rectangle, square, ring, and ellipse.

[0024] In a preferred embodiment, the floral structure of the plurality of joints is a combination of rectangles and rings;

[0025] Along the MD direction, the joints of multiple rectangular flower-shaped structures are arranged in a row at intervals; along the MD direction, the joints of multiple annular flower-shaped structures are arranged in a row at intervals.

[0026] Along the CD direction, the joints of multiple rectangular floral structures and the joints of multiple annular floral structures are arranged alternately.

[0027] Another objective of this invention is to provide a wearable article made using an elastic composite material provided by this invention.

[0028] The above-described technical solution of this utility model has at least the following beneficial effects compared with the prior art:

[0029] This invention provides an elastic composite material and a wearable article. The elastic composite material includes at least a first elongated nonwoven fabric and an elastic membrane that are compounded together. The elastic composite material has elasticity at least along the MD direction and / or CD direction. The elastic composite material has a tensile resilience ratio of at least 100%. In the elastically stretched state, the first elongated nonwoven fabric and the elastic membrane form a clearly visible through hole in the joint area, thereby increasing the breathability of the elastic composite material and reducing the stuffiness when wearing it. When the elastic composite material retracts to its natural state, in areas other than the joints, the elastic composite material expands and contracts under the influence of the elastic membrane's rebound force. The through-holes also contract due to the elastic membrane's contraction force, making over 85% of the area of ​​the elastic composite material smoother (the smoothness of elastic composite material 2 is maintained at over 85%), resulting in micro-wrinkles invisible to the naked eye. The elastic composite material also includes a second elongated nonwoven fabric, with the elastic membrane sandwiched between the first and second elongated nonwoven fabrics. In its natural state, the ratio of the width of the joint to the length of the first and second elongated nonwoven fabrics between two adjacent joints is greater than 2% and less than 15%. The elastic composite material prepared with this material has shorter lengths of the first and second elongated nonwoven fabrics between two adjacent joints in its natural state compared to existing elastic composite materials. This makes more than 85% of the area of ​​the elastic composite material smoother (the smoothness of elastic composite material 2 is maintained at more than 85%), thus giving the elastic composite material a high degree of smoothness. When worn, the elastic waistband of the pull-up pants made with this elastic composite material has less noticeable small wrinkles, the product is smoother, and it does not look bulky. In its natural state, the thickness of the elastic composite material ranges from 0.5mm to 2mm, making it relatively thin and lightweight, and comfortable to wear.

[0030] This utility model provides an elastic composite material and a wearable item. The elastic composite material has elasticity in at least one direction along the MD direction or the CD direction. That is to say, the elastic composite material has the characteristics of elasticity along the MD or CD direction, as well as elasticity along both the MD and CD directions. This avoids the restraint caused by traditional elastic composite materials that are only elastic in the MD direction. Moreover, the elastic waistband of the pull-up pants made of this elastic composite material can be adjusted according to the usage needs of different parts of the body, with flexible adjustment, good fit and high elasticity, thus improving product quality. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a cross-sectional view of an existing elastic composite material retracted to its natural state.

[0033] Figure 2 This is a photograph of an existing elastic composite material shrinking back to its natural state.

[0034] Figure 3 This is a planar schematic diagram of an elastic composite material retracting to its natural state in Embodiment 1 of this utility model.

[0035] Figure 4 yes Figure 3 Cross-sectional view along the U1-U1 direction.

[0036] Figure 5 This is a photograph of an elastic composite material in its natural state, as shown in Embodiment 1 of this utility model.

[0037] Figure 6 This is a planar schematic diagram of an elastic composite material in an elongated state according to Embodiment 1 of this utility model.

[0038] Figure 7 yes Figure 6 Cross-sectional view along the U2-U2 direction.

[0039] Figure 8 This is a schematic diagram of the flower-shaped structure of the joint in some embodiments of this utility model.

[0040] Figure 9 This is a schematic diagram of the flower-shaped structure of the joint in some other embodiments of this utility model.

[0041] Figure 10 This is a planar schematic diagram of an elastic composite material retracting to its natural state in Embodiment 2 of this utility model.

[0042] Figure 11 yes Figure 10 Cross-sectional view along the U3-U3 direction.

[0043] Figure 12 This is a planar schematic diagram of an elastic composite material in an elongated state according to Embodiment 2 of this utility model.

[0044] Figure 13 This is a planar schematic diagram of an elastic composite material retracting to its natural state in Embodiment 3 of this utility model.

[0045] Figure 14 yes Figure 13 Cross-sectional view along the U4-U4 direction.

[0046] Figure 15 yes Figure 13Cross-sectional view along the U5-U5 direction.

[0047] Figure 16 This is a cross-sectional schematic diagram of an elastic composite material in a low-ratio elongation state according to Embodiment 3 of this utility model.

[0048] Figure 17 These are comparison photographs of an elastic composite material in its retracted state and its elongated state, as shown in Embodiment 3 of this utility model. Figure 17 Image (a) is a photograph of an elastic composite material in its natural state after shrinking back to its original shape. Figure 17 Image (b) is a photograph of an elastic composite material in its elongated state.

[0049] Figure 18 This is a schematic diagram of the floral structure of the joint in some embodiments of this utility model.

[0050] Figure 19 This is a schematic diagram of the flower-shaped structure of the joint in some embodiments of this utility model. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0052] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0053] It should be noted that the terms "upper", "lower", "left", "right", "front", and "back" used in this utility model are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] Example 1.

[0055] Combination Figures 3 to 9 According to an embodiment of this utility model, an elastic composite material 2 is provided. The elastic composite material 2 has mutually orthogonal MD, CD, and TD directions, wherein the MD direction is the flow direction for processing the elastic composite material, such as... Figure 3 and Figure 4 As shown. The elastic composite material 2 has elasticity at least along the MD direction and / or the CD direction. In this embodiment, the elastic composite material 2 has elasticity along the MD direction.

[0056] like Figure 4 As shown, along the TD direction, the elastic composite material 2 includes at least a first elongated nonwoven fabric 21 and an elastic membrane 23 that are compounded together.

[0057] In this embodiment, along the TD direction, the elastic composite material 2 includes a first elongated nonwoven fabric 21, a second elongated nonwoven fabric 22, and an elastic membrane 23 sandwiched between the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22.

[0058] The elongated nonwoven fabrics referred to in this utility model as the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 are: nonwoven fabrics that elongate to a certain extent and partially break under the action of mechanical external force, resulting in larger gaps, and the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 do not automatically shrink back after elongation under the action of mechanical external force. That is, the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 are nonwoven fabrics with elongation characteristics but no elastic shrinkage characteristics.

[0059] In some embodiments, the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 may be elongated nonwoven fabrics made using elongated fibers or elongated resins or elongation processes, and the elastic composite material 2 has a tensile resilience ratio of at least 100% (i.e., the elastic composite material 2 has at least a tensile resilience ratio of at least twice).

[0060] In some embodiments, the basis weights of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 are respectively between 6 and 30 g / m². 2 The basis weight range of elastic membrane 23 is 15–40 g / m³. 2 Furthermore, a concentration of 20–40 g / m² is preferred. 2 .

[0061] According to an embodiment of the present invention, the elongation at break of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 is less than the elongation at break of the elastic membrane 23.

[0062] Furthermore, the elongation at break of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 is 80% to 200%; the elongation at break of the elastic membrane 23 is 500% or more. Even further, it is preferable that the elongation at break of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 is 100% to 160%. (Note: Elongation at break, i.e., the ratio of the elongation at break to the original length of the sample, is expressed as a percentage, refer to GB / T 24218.3-2010 Part 3: Determination of breaking strength and elongation at break).

[0063] like Figure 3 As shown, according to an embodiment of the present invention, the first elongated nonwoven fabric 21, the elastic membrane 23, and the second elongated nonwoven fabric 22 are composited by multiple joints 20c arranged at intervals along the MD direction to form several rows and at intervals along the CD direction to form several columns. The joints 20c are arranged alternately along the MD and CD directions, and in their natural state, the area outside the joints 20c accounts for more than 85% of the total area of ​​the elastic composite material 2.

[0064] For example, the first elongated nonwoven fabric 21, the elastic membrane 23, and the second elongated nonwoven fabric 22 are composited by ultrasonic and hot-pressing composite processes to form multiple joints 20c that are spaced apart in several rows along the MD direction and spaced apart in several columns along the CD direction.

[0065] Around the joint 20c, the elastic membrane 23 is cut to form an opening 20a. In the elastically stretched state, in the region of the joint 20c, the first stretched nonwoven fabric 21, the elastic membrane 23, and the second stretched nonwoven fabric 22 are penetrated to form a visible through hole 20b. In addition to the opening 20a formed by cutting the elastic membrane 23 around the joint 20c, this invention also features a clearly visible through hole 20b formed by the first stretched nonwoven fabric 21, the elastic membrane 23, and the second stretched nonwoven fabric 22 in the region of the joint 20c, thereby increasing the air permeability of the elastic composite material 2 and further improving its air permeability.

[0066] According to an embodiment of the present invention, the edge of each joint 20c overlaps with the edge of each through hole 20b at least, that is, at least a portion of the joint 20c is retained after the through hole 20b formed by the joint 20c, so as to avoid the first elongated nonwoven fabric 21, the elastic membrane 23 and the second elongated nonwoven fabric 22 from separating from each other after the joint 20c is completely penetrated.

[0067] In this invention, under natural conditions, the area outside the joint 20c accounts for more than 85% of the total area of ​​the elastic composite material 2. This is determined by the elastic recovery performance (i.e., tensile recovery ratio) of the elastic composite material 2 and the pattern distribution area of ​​the joint 20c.

[0068] Generally, under maximum tensile conditions, the area distribution ratio of the joint 20c pattern in composite material 2 typically does not exceed 8%. Exceeding 8% will affect the overall flexibility of the elastic composite material 2. Furthermore, a larger joint 20c area means a larger through-hole 20b area in the elastic composite material 2. A larger through-hole 20b area will also affect the stable operation of the elastic composite material 2 when it is put into use (e.g., increasing the risk of breakage). When the elastic composite material 2 shrinks back to its natural state, the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 shrink together due to the contraction force of the elastic membrane 23. Although the through-hole 20b also shrinks due to the contraction force of the elastic membrane 23, the shrinkage amount of the through-hole 20b is less than that of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22. Therefore, the area ratio of the joint 20c in the naturally shrunken state of the composite material 2 will increase with shrinkage.

[0069] Assuming that the area distribution of the patterned joint 20c in the maximum tensile state of composite material 2 is 8%, and the tensile resilience ratio of elastic composite material 2 is 100% (i.e., twice the tensile ratio), the area proportion of the joint 20c in the natural shrinkage state of composite material 2 may reach 16%. That is to say, 16% of the joint 20c area may have slight unevenness due to the presence of the joint 20c. However, in the 84% area outside the joint 20c, the use of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 maintains the flatness of elastic composite material 2, thus making more than 84% of the area of ​​elastic composite material 2 flatter (the flatness of elastic composite material 2 is maintained above 84%). Considering the above factors, in the natural state, the area outside the joint 20c accounts for more than 85% of the total area of ​​elastic composite material 2, making more than 85% of the area of ​​elastic composite material 2 flatter (the flatness of elastic composite material 2 is maintained above 85%).

[0070] Furthermore, the ratio of the floral area of ​​the joint 20c to the total area of ​​the elastic composite material 2 (the proportion of all joints 20c to the total surface area of ​​the elastic composite material 2) is less than or equal to 10%.

[0071] According to an embodiment of the present invention, when the elastic composite material 2 retracts to its natural state, in the area outside the joint 20c, the elastic composite material 2 retracts under the action of the elastic membrane 23, and the through hole 20b also retracts along with the contraction force of the elastic membrane 23. In its natural state, the ratio of the width of the joint 20c to the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c is greater than 2% and less than 15%. The elastic composite material 2 stretches and contracts along the MD direction to form tiny wrinkles that are invisible to the naked eye, making more than 85% of the area of ​​the elastic composite material 2 flatter (the flatness of the elastic composite material 2 is maintained at more than 85%).

[0072] Specifically, in combination Figure 3 and Figure 4 In this embodiment, the elastic composite material 2 has elasticity along the MD direction, and the elasticity direction of the elastic composite material 2 is the MD direction.

[0073] When the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, the ratio of the width of the joint 20c to the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c along the MD direction is greater than 2% and less than 15%.

[0074] Let the width of the joint 20c be d, the distance between two adjacent joints 20c be D, and the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between the distance D between two adjacent joints 20c be L. Then d / L > 2% and d / L < 15%. Therefore, when the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, the length L of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between the distance D between two adjacent joints 20c is shorter (compared to existing elastic composite materials 2, such as...). Figure 1 As shown), this forms tiny, invisible shrinkage wrinkles in the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c, making more than 85% of the area of ​​the elastic composite material 2 smoother (the smoothness of the elastic composite material 2 is maintained at more than 85%), thus making the surface of the elastic composite material 2 smoother, as shown. Figure 3 , Figure 4 and Figure 5 As shown.

[0075] When the elastic composite material 2 of this utility model retracts to its natural state under the action of the elastic membrane 23, although the width d of the joint 20c decreases, and the openings 20a around the joint 20c and the through holes 20b in the joint 20c also shrink along the MD direction under the action of the elastic membrane 23, the through holes 20b remain clearly visible, exhibiting strong air permeability. Figure 3 , Figure 4 and Figure 5 As shown.

[0076] When the elastic composite material 2 shrinks back to its natural state under the action of the elastic membrane 23, since d / L > 2% and d / L < 15%, the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c form shrinkage wrinkles that are invisible to the naked eye, and the surface of the elastic composite material 2 is relatively smooth.

[0077] like Figure 6 and Figure 7 As shown, when the elastic composite material 2 of this utility model is in the elongated state, the width d of the joint 20c increases, and the opening 20a around the joint 20c and the through hole 20b located in the joint 20c elongate and increase along the MD direction, thereby enhancing air permeability.

[0078] When the elastic composite material 2 is in an elongated state, the tiny shrinkage folds formed by the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c are stretched along the MD direction, and the elastic composite material 2 is almost flattened, making the surface of the elastic composite material 2 smoother.

[0079] The present invention makes the elastic composite material 2 thinner because the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 form invisible shrinkage folds on the surface of the elastic composite material 2.

[0080] The thickness of the elastic composite material 2 of this invention ranges from 0.5mm to 2mm in its natural state, preferably from 0.5mm to 1mm. Compared with the thickness range of 2mm to 4mm of the elastic composite material 2 in existing wearable articles (which has multiple large convex and concave structures with shrinkage folds), the elastic composite material 2 of this invention is thinner. Wearable articles made from it feel lighter and more comfortable to wear, without feeling bulky. It also has two openings, an opening 20a and a through hole 20b, which gives the elastic composite material 2 high breathability, overcoming the problem of poor breathability of existing elastic composite materials 2 (which only have an opening 20a). In its natural state, the bending stiffness of the elastic composite material 2 (in the CD direction or MD direction) ranges from 1 to 40 mg*cm, and the elastic composite material 2 has better softness.

[0081] The shape and size of the joint 20c, opening 20a, and through hole 20b of this utility model are not specifically limited. In some embodiments, the floral structure of the plurality of joints 20c is rectangular, square, annular, elliptical, or any combination of two or more.

[0082] Different patterns of the joint 20c can make the elastic composite material 2 present different states. If the pattern of the joint 20c is rectangular, such as a vertical or horizontal rectangle, the through hole 20b is clearer and the opening is larger in the tensile state, resulting in better air permeability. If the pattern of the joint 20c is square, ring, or elliptical, the elastic composite material 2 has higher elasticity and softness.

[0083] like Figure 8 As shown, in one embodiment, the flower-shaped structure of the plurality of joints 20c is a vertical rectangle, and the joints 20c with the plurality of vertical rectangle flower-shaped structures are arranged at intervals along the MD direction to form several columns, and the joints 20c with the plurality of vertical rectangle flower-shaped structures are arranged at intervals along the CD direction to form several rows.

[0084] According to an embodiment of the present invention, a wearable article is provided, which is made using an elastic composite material provided by the present invention. The wearable article has a front waist portion disposed on the front waist side of the wearer, a back portion disposed on the back side of the wearer, and a crotch portion located between the front waist portion and the back side. The elastic composite material can be applied to at least one part of the front waist portion, the back side, and the crotch portion of the wearable article. In one embodiment, the wearable article can be a shorts-type wearable article, wherein the two side edges of the front waist portion and the two side edges of the back side of the shorts-type wearable article are respectively sealed to form side closures, so that the shorts-type wearable article forms a pant-like shape with a waist opening and two leg openings.

[0085] In another embodiment, the garment can be an adhesive-type garment having a main body and a pair of left and right waist patches disposed on both sides of the back of the main body, and a front waist patch disposed on the front waist of the main body; when worn, the left and right waist patches are respectively attached to the front waist patch of the front waist of the main body, so that the adhesive-type garment is in a closed state, thereby forming a pant shape with one waist opening and two leg openings.

[0086] Example 2.

[0087] The difference between this embodiment and Embodiment 1 is that the elastic composite material 2 has elasticity along the CD direction.

[0088] like Figure 9 , 10 and Figure 11 As shown, in this embodiment, the elastic composite material 2 has elasticity along the CD direction, and the direction of elasticity of the elastic composite material 2 is the CD direction, as follows. Figure 9 As shown, in this embodiment, the flower-shaped structure of the multiple joints 20c is a horizontal rectangle. The multiple horizontal rectangle flower-shaped joints 20c are arranged at intervals along the MD direction to form several columns, and the multiple horizontal rectangle flower-shaped joints 20c are arranged at intervals along the CD direction to form several rows.

[0089] like Figure 10 As shown, when the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, in the area other than the joint 20c, the elastic composite material 2 expands and contracts under the action of the elastic force of the elastic membrane 23, and the through hole 20b also contracts along with the contraction force of the elastic membrane 23. The elastic composite material 2 expands and contracts along the CD direction to form tiny wrinkles that are invisible to the naked eye, making more than 85% of the area of ​​the elastic composite material 2 flatter (the flatness of the elastic composite material 2 is maintained at more than 85%).

[0090] In its natural state, along the CD direction, the ratio of the width of the joint 20c to the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c is greater than 2% and less than 15%.

[0091] Let the width of the joint 20c be d, the distance between two adjacent joints 20c be D, and the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between the distance D between two adjacent joints 20c be L. Then d / L > 2% and d / L < 15%. Therefore, when the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, along the stretching direction (CD direction) of the elastic composite material 2, the length L of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between the distance D between two adjacent joints 20c is shorter. This results in multiple micro-shrinkage wrinkles that are invisible to the naked eye forming in the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c. More than 85% of the area of ​​the elastic composite material 2 becomes smoother (the smoothness of the elastic composite material 2 is maintained at more than 85%), thus making the surface of the elastic composite material 2 smoother and improving the surface smoothness of the elastic composite material 2. Figure 10 and Figure 11 As shown.

[0092] When the elastic composite material 2 of this utility model retracts to its natural state under the action of the elastic membrane 23, although the width d of the joint 20c decreases, and the openings 20a around the joint 20c and the through holes 20b in the joint 20c also decrease in size along the CD direction under the action of the elastic membrane 23, the through holes 20b remain clearly visible, exhibiting strong air permeability. Figure 10 and Figure 11 As shown.

[0093] When the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, tiny shrinkage wrinkles, invisible to the naked eye, are formed between the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c, and the surface of the elastic composite material 2 is smooth.

[0094] like Figure 12 As shown, when the elastic composite material 2 of this utility model is in the elongated state, the width d of the joint 20c increases, and the opening 20a around the joint 20c and the through hole 20b in the joint 20c elongate and increase along the CD direction, thereby enhancing air permeability.

[0095] When the elastic composite material 2 is in an elongated state, the tiny shrinkage folds formed by the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c are stretched along the CD direction, and the elastic composite material 2 is flattened, making the surface of the elastic composite material 2 smoother.

[0096] Example 3.

[0097] The difference between this embodiment and Embodiment 1 is that the elastic composite material 2 has elasticity along the MD direction and elasticity along the CD direction.

[0098] like Figure 13 , Figure 14 and Figure 15 As shown, in this embodiment, the elastic composite material 2 has elasticity along the MD direction and elasticity along the CD direction. The elasticity directions of the elastic composite material 2 are the MD direction and the CD direction.

[0099] When the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, in the area other than the joint 20c, the elastic composite material 2 expands and contracts under the action of the elastic membrane 23. The through hole 20b also contracts along with the contraction force of the elastic membrane 23. The elastic composite material 2 expands and contracts along the CD and MD directions to form tiny wrinkles that are invisible to the naked eye, making more than 85% of the area of ​​the elastic composite material 2 flatter (the flatness of the elastic composite material 2 is maintained at more than 85%).

[0100] In its natural state, along the MD direction, such as Figure 14 The ratio of the width of the joint 20c to the lengths of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c is greater than 2% and less than 15%. Furthermore, when the elastic composite material 2 retracts to its natural state under the influence of the elastic membrane 23, along the CD direction, as... Figure 15 The ratio of the width of the joint 20c to the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c is greater than 2% and less than 15%.

[0101] Let the width of the joint 20c be d, the distance between two adjacent joints 20c be D, and the length of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between the distance D between two adjacent joints 20c be L. Then d / L > 2% and d / L < 15%. Therefore, when the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, along the stretching direction (MD and CD directions) of the elastic composite material 2, the length L of the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between the distance D between two adjacent joints 20c is shorter. This results in tiny, invisible shrinkage wrinkles forming in the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c. More than 85% of the area of ​​the elastic composite material 2 becomes smoother (the smoothness of the elastic composite material 2 is maintained at more than 85%), thus making the surface of the elastic composite material 2 smoother and improving its surface flatness. Figure 13 , Figure 14 and Figure 15 As shown.

[0102] In this embodiment, since the elastic composite material 2 has elasticity in the MD direction and elasticity in the CD direction, when the elongation ratio of the elastic composite material 2 in the MD and CD directions is less than a certain value and the resilience of the elastic membrane 23 can reach more than 90%, after the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23, the opening 20a formed by the elastic membrane 23 around the joint 20c completely overlaps with the through hole 20b formed by the joint 20c.

[0103] Specifically, such as Figure 13 , Figure 14 and Figure 15 As shown, the elastic composite material 2 retracts to its natural state under the action of the elastic membrane 23. The opening 20a formed by the elastic membrane 23 around the joint 20c completely overlaps with the through hole 20b formed by the joint 20c.

[0104] like Figure 16 As shown, when the elongation ratio of the elastic composite material 2 along the MD and CD directions is less than a certain value and the resilience of the elastic membrane 23 can reach more than 90%, for example, when the elongation ratio of the elastic composite material 2 along the MD and CD directions is less than 1.5 times, the opening 20a formed by the elastic membrane 23 around the joint 20c completely overlaps with the through hole 20b formed by the joint 20c.

[0105] like Figure 17 As shown, there is a comparison of actual photos of the elastic composite material 2 in its natural state and its elongated state. Figure 17 Image (a) is a photograph of an elastic composite material 2 after it has been shrunk to its natural state. Figure 17(b) is a photograph of the elastic composite material 2 in its elongated state.

[0106] Depend on Figure 17 As can be seen, when the elastic composite material 2 shrinks back to its natural state, tiny shrinkage wrinkles, invisible to the naked eye, are formed in the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c. The surface of the elastic composite material 2 is relatively smooth, as... Figure 17 As shown in (a).

[0107] When the elastic composite material 2 is in an elongated state, the invisible shrinkage wrinkles formed by the first elongated nonwoven fabric 21 and the second elongated nonwoven fabric 22 between two adjacent joints 20c are stretched, the elastic composite material 2 is flattened, and the surface is smoother. The openings 20a around the joints 20c and the through holes 20b located in the joints 20c are enlarged, and the through holes 20b are clearly visible, resulting in strong air permeability. Moreover, the elastic composite material 2 is stretched along both the MD and CD directions. Compared to stretching in only one direction, the composite material 2 is softer, fluffier, and has better flatness. Furthermore, at maximum tension, the material is thinner and lighter. Figure 17 As shown in (b).

[0108] like Figure 13 As shown, in this embodiment, the flower-shaped structure of the multiple joints 20c is square, the multiple square flower-shaped joints 20c are arranged at intervals along the MD direction to form several columns, and the multiple square flower-shaped joints 20c are arranged at intervals along the CD direction to form several rows.

[0109] like Figure 18 As shown, in some embodiments, the flower-shaped structure of the plurality of joints 20c is annular, the joints 20c with the plurality of annular flower-shaped structures are arranged at intervals along the MD direction to form several columns, and the joints 20c with the plurality of annular flower-shaped structures are arranged at intervals along the CD direction to form several rows.

[0110] like Figure 19 As shown, in some embodiments, the floral structure of the plurality of joints 20c is a combination of rectangles and rings.

[0111] Along the MD direction, the joints 20c of multiple rectangular floral structures are arranged in a row at intervals; along the MD direction, the joints 20c of multiple annular floral structures are arranged in a row at intervals.

[0112] Along the CD direction, the joints 20c of multiple rectangular floral structures and the joints 20c of multiple annular floral structures are arranged alternately.

[0113] Multiple joints 20c adopt a combination of rectangular and annular shapes. When the elastic composite material 2 is in an elongated state, the rectangular joints 20c have larger openings, which improves the air permeability of the elastic composite material 2, while the annular joints 20c have smaller openings, which increases the strength of the elastic composite material 2.

[0114] Preferably, the joints 20c of multiple rectangular flower-shaped structures are arranged in a row with the same spacing. Along the MD direction, the joints 20c of multiple annular flower-shaped structures are arranged in a row with the same spacing. Along the CD direction, the joints 20c of multiple rectangular flower-shaped structures and the joints 20c of multiple annular flower-shaped structures are arranged alternately with the same spacing, thereby further improving the surface flatness of the elastic composite material 2, resulting in better surface flatness of the elastic composite material 2.

[0115] In this embodiment, since the elastic composite material 2 has elasticity in the MD direction and elasticity in the CD direction, along the CD direction, the joints 20c of multiple rectangular flower-shaped structures and the joints 20c of multiple annular flower-shaped structures are arranged alternately. By combining and arranging the joints 20c of different types of flower-shaped structures, the elastic composite material 2 can be subjected to more balanced forces and the surface flatness of the elastic composite material 2 can be improved.

[0116] The following points need to be explained:

[0117] (1) The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment. Other structures can refer to the general design.

[0118] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present invention, i.e., these drawings are not drawn to actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "below" another element, the element may be "directly" located "on" or "below" the other element or there may be intermediate elements.

[0119] (3) Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0120] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. An elastic composite material, characterized in that, The elastic composite material has mutually orthogonal MD, CD and TD directions, wherein the MD direction is the flow direction for processing the elastic composite material; Along the TD direction, the elastic composite material comprises at least a first elongated nonwoven fabric and an elastic membrane that are compounded together. The first elongated nonwoven fabric and the elastic membrane are composited by multiple joints arranged in a plurality of rows along the MD direction and in a plurality of columns along the CD direction. The elastic composite material has elasticity at least along the MD direction and / or CD direction; the elastic composite material has a tensile resilience ratio of at least 100%, wherein, in the elastic tensile state, in the joint region, the first elongated nonwoven fabric and the elastic membrane form a visible through hole. When the elastic composite material retracts to its natural state, in the area outside the joint, the elastic composite material retracts under the action of the elastic membrane's rebound force; in its natural state, the area outside the joint accounts for more than 85% of the total area of ​​the elastic composite material, and the thickness of the elastic composite material ranges from 0.5 mm to 2 mm.

2. The elastic composite material according to claim 1, characterized in that, The elastic composite material further includes a second elongated nonwoven fabric, and the elastic membrane is sandwiched between the first elongated nonwoven fabric and the second elongated nonwoven fabric, and is composited by multiple joints arranged at intervals along the MD direction to form several rows and at intervals along the CD direction to form several columns. In its natural state, the ratio of the width of the joint to the length of the first elongated nonwoven fabric and the second elongated nonwoven fabric between two adjacent joints is greater than 2% and less than 15%.

3. The elastic composite material according to claim 1, characterized in that, The edge of the joint overlaps at least with the edge of the through hole.

4. The elastic composite material according to claim 1, characterized in that, The joints are arranged alternately along the MD and CD directions, and the ratio of the floral area of ​​the joints to the total area of ​​the elastic composite material is less than or equal to 10%.

5. The elastic composite material according to claim 2, characterized in that, The first elongated nonwoven fabric and the second elongated nonwoven fabric are nonwoven fabrics with elongation characteristics but no elastic shrinkage characteristics, and the breaking elongation of the first elongated nonwoven fabric and the second elongated nonwoven fabric is less than the breaking elongation of the elastic membrane.

6. The elastic composite material according to claim 5, characterized in that, The breaking elongation of the first and second elongated nonwoven fabrics is 80% to 200%.

7. The elastic composite material according to claim 2, characterized in that, The basis weight range of the first elongated nonwoven fabric and the second elongated nonwoven fabric is 6–30 g / m². 2 The basis weight of the elastic membrane ranges from 15 to 40 g / m³. 2 .

8. The elastic composite material according to claim 5, characterized in that, The first and second elongated nonwoven fabrics are elongated nonwoven fabrics made of elongated fibers or elongated resins or elongation processes.

9. The elastic composite material according to claim 1, characterized in that, Under natural conditions, the bending stiffness of the elastic composite material ranges from 1 to 40 mg*cm.

10. The elastic composite material according to claim 1, characterized in that, The flower-shaped structure of the multiple joints can be any one or any combination of two or more of the following: rectangular, square, ring, and elliptical.

11. The elastic composite material according to claim 10, characterized in that, The floral structure of the multiple joints is a combination of rectangles and rings; Along the MD direction, the joints of multiple rectangular flower-shaped structures are arranged in a row at intervals; along the MD direction, the joints of multiple annular flower-shaped structures are arranged in a row at intervals. Along the CD direction, the joints of multiple rectangular floral structures and the joints of multiple annular floral structures are arranged alternately.

12. A garment, characterized in that, The garment is made using the elastic composite material described in any one of claims 1 to 11.

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