CN216455661U - Breathable comfortable pants structure and anti-tightening, anti-leakage and comfortable sanitary product - Google Patents

Abstract

The utility model discloses a breathable comfortable pants structure and an anti-tightening, anti-leakage and comfortable sanitary product, wherein the pants structure comprises an outer-layer non-woven fabric, an inner-layer non-woven fabric, a front waistline, a rear waistline and a waistline non-woven fabric; the front waist is clamped at the front waist end between the outer layer non-woven fabric and the inner layer non-woven fabric; the back waist is clamped at the back waist end between the outer layer non-woven fabric and the inner layer non-woven fabric; the waistline non-woven fabric is arranged above the inner layer non-woven fabric and at least covers the front waist end and the back waist end of the inner layer non-woven fabric. The breathable comfortable pants body structure provided by the utility model is characterized in that the inner-layer non-woven fabric is provided with the waistline non-woven fabric, the waistline non-woven fabric is a station which is independently arranged and is not formed by inwards folding the outer-layer non-woven fabric, and the waistline non-woven fabric is independently used as the inner lining fabric to be compounded with the inner-layer non-woven fabric, so that the feeling of strangeness or pressure caused by the contraction of rubber bands on a sanitary product can be completely avoided, and the comfort level of the waist and the abdomen is further improved; meanwhile, the design of the product is more flexible, and materials can be saved.

Description

Breathable comfortable pants body structure and anti-tightening, anti-leakage and comfortable sanitary product

Technical Field

The utility model relates to the technical field of sanitary products, in particular to a breathable comfortable pants body structure and an anti-tightening, anti-leakage and comfortable sanitary product.

Background

The pull-up diaper for babies, which is the disposable diaper most similar to underpants, is roughly divided into the following parts: the pants comprise a pull-up pants body, an absorption core body, a leakage-proof film, a fixed waistline, leakage-proof leg girdles and a disposal patch. The infant pull-up pants are classified according to structures and can be divided into the following three configurations: one-piece pull-up pants, two-piece pull-up pants and three-piece pull-up pants. Wherein, the one-piece pull-up pants have higher process difficulty, better experience and more material saving; the two-piece pull-up pants have relatively low process difficulty, good experience feeling and more used materials; the three-piece pull-up pants have the simplest process, poor experience and most material saving. The pull-up trousers with the three structures have different side emphasis and have advantages and disadvantages respectively. In commercially available pull-ups, the one-piece construction is the lowest, followed by two-piece pull-ups, the largest being three-piece pull-ups. The pull-up pants with the three structures can be formed by online compounding of a plurality of materials and integrally cutting and sewing.

However, in any configuration of pull-ups, the front and back waist regions of the body structure on the skin side are typically formed by folding the outer layer of nonwoven upward (as shown in figure 7). When the garment is worn, the folded part of the outer layer non-woven fabric can be in direct contact with the waist and abdomen of a user, and the comfort level is not good enough. Moreover, the trousers body structure of the structure needs to use more outer-layer non-woven fabrics, and needs to be folded during preparation, which is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a breathable comfortable pants body structure.

The second purpose of the utility model is to provide a comfortable sanitary article with tightening prevention and leakage prevention.

One of the purposes of the utility model is realized by adopting the following technical scheme:

the breathable comfortable pants body structure comprises an outer-layer non-woven fabric, an inner-layer non-woven fabric, a front waistline, a rear waistline and a waistline non-woven fabric; the front waistline is clamped at the front waistline end between the outer layer non-woven fabric and the inner layer non-woven fabric; the rear waist is clamped at the rear waist end between the outer layer non-woven fabric and the inner layer non-woven fabric; the waistline non-woven fabric is arranged above the inner-layer non-woven fabric and at least covers the front waist end and the rear waist end of the inner-layer non-woven fabric.

Further, the waist-circumference non-woven fabric comprises a front waist-circumference non-woven fabric and a rear waist-circumference non-woven fabric, and the front waist-circumference non-woven fabric covers the front waist end of the inner-layer non-woven fabric; the back waist non-woven fabric covers the back waist end of the inner layer non-woven fabric.

Further, in the perpendicular projection direction, the front waist nonwoven fabric completely overlaps with the front waist, or the front waist nonwoven fabric covers the front waist; the back waistline non-woven fabric is completely overlapped with the back waistline, or the back waistline non-woven fabric covers the back waistline.

Furthermore, the waistline non-woven fabric is made of medical gauze.

Further, the leg elastic body comprises a plurality of leg elastic bodies; the leg elastic bodies are divided into two groups, namely a front waist side leg elastic body and a back waist side leg elastic body; one end of the front waist side leg elastic body is fixed between the inner layer non-woven fabric and the front waistline, and the other end of the front waist side leg elastic body is fixed between the inner layer non-woven fabric and the outer layer non-woven fabric; one end of the back waist side leg elastic body is fixed between the inner layer non-woven fabric and the back waistline, and the other end of the back waist side leg elastic body is fixed between the inner layer non-woven fabric and the outer layer non-woven fabric.

Further, in the front waist leg elastic member, one end fixed between the inner nonwoven fabric and the front waist circumference is referred to as an elastic member front waist end, and one end fixed between the inner nonwoven fabric and the outer nonwoven fabric is referred to as an elastic member front crotch end; the elastic body front waist end is bent and extended towards the elastic body front crotch end to form two arcs with different bending directions.

Further, for the rear waist-side leg elastic body, one end fixed between the inner layer nonwoven fabric and the rear waist circumference is referred to as an elastic body rear waist end, and one end fixed between the inner layer nonwoven fabric and the outer layer nonwoven fabric is referred to as an elastic body rear crotch end; the elastic body back waist end is bent and extended towards the elastic body back crotch end to form two radians with different bending directions.

Further, the elastic body front crotch end and the elastic body back crotch end are parallel to each other side by side in the front waist side leg elastic body and the back waist side leg elastic body.

Further, the elastomeric front crotch end and the elastomeric back crotch end are each closer to the front waist side of the pant body structure than to the back waist side of the pant body structure. That is, if the front waist side of the pants body structure is folded toward the back waist side, the elastic body front crotch end and the elastic body back crotch end are both located on one side of the folding line and close to the front waist side.

Furthermore, the number of the front waist side leg elastic bodies is 2, the front waist side leg elastic bodies are respectively arranged on the left side and the right side of the trousers body structure, and each group of front waist side leg elastic bodies comprises two elastic bodies; the quantity of back waist side shank elastomer is 2 groups, sets up respectively in the left and right sides of trousers body structure, and two elastomers are all wrapped up in back waist side shank elastomer of each group.

Further, the front waistline and the back waistline are both formed of an elastic material; the elastic material comprises a first elastic non-woven fabric and a second elastic non-woven fabric which are compounded up and down, and the first elastic non-woven fabric is formed by cross lapping of curled fibers; the second elastic non-woven fabric comprises at least one fiber layer formed by stacking elastic fiber yarns in an unordered mode.

Further, the front waistline and the rear waistline are both formed of an elastic material; the elastic material comprises a first elastic non-woven fabric, a second elastic non-woven fabric and a plurality of rubber strips, wherein the first elastic non-woven fabric and the second elastic non-woven fabric are compounded up and down, and the rubber strips are sequentially arranged and clamped between the first elastic non-woven fabric and the second elastic non-woven fabric; the first elastic non-woven fabric is formed by cross lapping of curled fibers; the second elastic non-woven fabric comprises at least one fiber layer formed by stacking elastic fiber yarns in an unordered mode.

Further, the front waistline and the rear waistline are both formed of an elastic material; the elastic material comprises an elastic film, and a plurality of air holes are distributed on the elastic film.

Further, the elastic material comprises a first elastic non-woven fabric and a second elastic non-woven fabric which are compounded through ultrasonic waves, wherein the first elastic non-woven fabric comprises cross-lapping bi-component crimped fibers, the bi-component crimped fibers comprise first fibers and second fibers which are arranged in parallel, and the first fibers and the second fibers are bonded in parallel to form the crimped fibers with the crimp shrinkage rate of 50-60%; the first elastic nonwoven fabric has a grammage of from 18 to 22 grams per square meter and the second elastic nonwoven fabric has a grammage of from 80 to 100 grams per square meter.

Further, the elastic material comprises a first elastic non-woven fabric and a second elastic non-woven fabric which are compounded through ultrasonic waves, and a plurality of rubber ribs which are sequentially arranged and clamped between the first elastic non-woven fabric and the second elastic non-woven fabric; the first elastic non-woven fabric comprises cross-lapping bi-component crimped fibers, the bi-component crimped fibers comprise first fibers and second fibers which are arranged in parallel, and the first fibers and the second fibers are bonded in parallel to form crimped fibers with the crimp shrinkage rate of 50-60%; the gram weight of the first elastic non-woven fabric is 13-17g per square meter; the gram weight of the second elastic non-woven fabric is 15-25g per square meter; the denier number of each rubber rib is 250-300 denier, and the distance between two adjacent rubber ribs is 1-2 mm.

Further, the elastic material comprises a TPU elastic film, the gram weight of the TPU elastic film is 30-50g per square meter, a plurality of air holes are distributed in the TPU elastic film, the aperture of each air hole is 0.5-1.5mm, and the distance between every two adjacent air holes is 5-10 mm.

The second purpose of the utility model is realized by adopting the following technical scheme:

the comfortable sanitary article for preventing tightening and leakage adopts the structure of the breathable and comfortable pants body.

Furthermore, the anti-tightening, anti-leakage and comfortable sanitary product also comprises an inner body, wherein the inner body is arranged above the trouser body structure and comprises an absorption core body, an anti-side leakage separation edge and an anti-leakage film; the side leakage prevention separation edges are arranged on the left side and the right side of the absorption core body; the leak protection membrane set up in absorb the bottom of core, the left and right sides of leak protection membrane is equallyd divide and is upwards extended respectively and establish, makes the leak protection membrane forms the parcel absorb the U type structure of the core left and right sides.

Compared with the prior art, the utility model has the beneficial effects that:

the breathable comfortable pants body structure provided by the utility model is characterized in that the inner-layer non-woven fabric is provided with the waistline non-woven fabric, the waistline non-woven fabric is a station which is independently arranged and is not formed by inwards folding the outer-layer non-woven fabric, and the waistline non-woven fabric is independently used as the inner lining fabric to be compounded with the inner-layer non-woven fabric, so that the feeling of strangeness or oppression caused by the contraction of rubber bands on a sanitary product can be completely avoided, and the comfort degree of the waist and the abdomen is further improved; meanwhile, the design of the product is more flexible, and materials can be saved.

Drawings

FIG. 1 is an expanded view of a sanitary product according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a hygienic device provided by an embodiment of the present invention;

FIG. 3 is a schematic view of the distribution of a plurality of rubber strips on an elastic material according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of an elastic material provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of a rubber strip and ultrasonic bonding lines in an elastic material according to an embodiment of the present invention;

FIG. 6 is a perspective view of a sanitary article according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a prior art sanitary article;

FIG. 8 is an enlarged view of a portion of a first elastic nonwoven fabric according to an embodiment of the present invention;

fig. 9 is a partially enlarged view of a second elastic nonwoven fabric according to an embodiment of the present invention.

In the figure: 1. outer layer non-woven fabric; 2. an elastic material; 3. inner layer non-woven fabric; 4. waist nonwoven fabric; 5. the side leakage prevention separation edge; 6. inner core wrapping cloth; 7. a leak-proof membrane; 8. discarding the patch; 9. a leg elastic body; 10. a second elastomer; 11. a surface layer; 12. an absorbent core; 13. a cover layer; 14. a first elastic body; 15. an absorbent core; 16. a waist-side combining part; 17. a first elastic nonwoven fabric; 18. a rubber band; 19. a second elastic nonwoven fabric; 20. and (6) bonding lines.

Detailed Description

The present invention is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the case of no conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

For embodiments of the present invention, "longitudinal" and "lengthwise" both refer to the direction from the front waist end to the back waist end of the product, while "lateral" and "widthwise" are directions orthogonal to the "longitudinal" direction.

Example 1

As shown in fig. 1 to 5 and 8 to 9, the anti-stretch breathable waist elastic material 2, the elastic material 2 includes a first elastic nonwoven 17 and a second elastic nonwoven 19 which are combined up and down, the first elastic nonwoven 17 is formed by cross-lapping of crimped fibers, for example, the first elastic nonwoven 17 includes a first elastic nonwoven 17 and a second elastic nonwoven 19 which are combined up and down, the first elastic nonwoven 17 includes cross-lapped bicomponent crimped fibers, the bicomponent crimped fibers include first fibers and second fibers which are juxtaposed, and the first fibers and the second fibers are juxtaposed and bonded to form crimped fibers; the second elastic nonwoven fabric 19 includes at least one fiber layer formed by stacking elastic fiber yarns in an unordered manner.

The anti-fraying breathable waist elastic material 2 provided by the embodiment of the utility model has elastic elasticity, and the first elastic non-woven fabric 17 and the second elastic non-woven fabric 19 are compounded to form a material with better elasticity. The first elastic non-woven fabric 17 is a super-crimp non-woven fabric which is formed by cross lapping of numerous super-crimp fibers through fixing of thermal bonding points, the cloth surface is fluffy, the elongation is higher than that of a common non-woven fabric by more than 40%, the deformation amount is large, and the non-woven fabric has certain retraction capacity. The crimped fibers in the first elastic nonwoven 17 may be naturally crimped fibers. The first elastic nonwoven 17 and the second elastic nonwoven 19 are combined to provide strong support to the elastic material 2, thereby limiting the excessive stretching of the second elastic nonwoven 19 and preventing the elastic material 2 from being damaged.

The second elastic non-woven fabric 19 is formed by melting polymer raw materials, spraying the melted polymer raw materials through a spinneret plate to form a piece of extremely fine elastic yarn, stacking the elastic yarn in disorder, cooling and adhering the elastic yarn to form the high-elasticity non-woven fabric. The second elastic nonwoven fabric 19 has many gaps between the elastic fiber filaments, and thus has excellent air permeability. In addition, the second elastic nonwoven fabric 19 is formed by random overlapping of the elastic fiber yarns, so that the gram weight of the second elastic nonwoven fabric 19 is sufficiently low, about 10gsm as the minimum, and compared with an elastic film prepared by a casting method, the gram weight of the cast elastic film is greatly reduced, and about 25gsm as the minimum. That is, the second elastic nonwoven fabric 19 formed by random overlapping of elastic fiber yarns has a similar contractive force to that of the elastic film formed by casting, but the cost of the second elastic nonwoven fabric 19 can be reduced by about 60%.

The second elastic nonwoven fabric 19 may include only one fibrous layer, and the elastic fiber filaments are bonded in a random overlapping manner to form a single fibrous layer, so that the second elastic nonwoven fabric 19 maintains good bulkiness and air permeability. If the second elastic nonwoven fabric 19 includes two or more fiber layers, it is sufficient to combine a plurality of fiber layers, for example, a single fiber layer is formed by stacking the fibers in disorder when the fibers are ejected, and a second fiber layer is formed by stacking the fibers ejected continuously in disorder on the single fiber layer; or a plurality of single-layer fiber layers can be compounded by means of adhesive bonding, ultrasonic bonding and the like. The elastic fiber yarns in the second elastic non-woven fabric 19 are stacked disorderly, meaning that the elastic fiber yarns are not regularly arranged and are not arranged according to a preset radial direction and a preset weft direction, and the fiber yarns are not completely arranged in parallel, or vertically arranged, or regularly interwoven, and are ejected from a polymer raw material in a molten state through a spinneret plate and are naturally stacked and formed disorderly.

As shown in fig. 3-5, as a preferred embodiment, it further comprises a plurality of rubber ribs 18; a plurality of rubber strips 18 are arranged in sequence between the first elastic nonwoven 17 and the second elastic nonwoven 19. That is, the elastic material 2 forms a three-layer sandwich structure, the first elastic nonwoven 17 and the second elastic nonwoven 19 are positioned at both sides, and a plurality of rubber bands 18 are positioned in the middle. The second elastic nonwoven fabric 19 has a small adhesion between the elastic fiber filaments and the elastic fiber filaments, and the fiber filaments themselves have a poor fracture resistance, so that there is a risk of fiber fracture and partial loss of elasticity when the elastic material 2 is used as a waist, and this problem can be solved by providing a plurality of elastic strips 18 between the first elastic nonwoven fabric 17 and the second elastic nonwoven fabric 19. Moreover, the rubber ribs 18 arranged between the first elastic non-woven fabric 17 and the second elastic non-woven fabric 19 can also make up for the defects that the deformation of the first elastic non-woven fabric 17 is small, the stretching force is insufficient, and the attaching and wrapping performance is not strong. In addition, when the elastic material 2 of this structure was taken as elastic waist to the health supplies, rubber band strip 18 was prefabricated compound with first elasticity non-woven fabrics 17 and second elasticity non-woven fabrics 19, when the health supplies shaping, need not to pull tens of rubber bands at the platform, can greatly strengthen the stability of board, reduces the piece of inferior waste to bring the promotion of the productivity that is showing.

In a preferred embodiment, the plurality of rubber strips 18 are continuous and unbroken, and the rubber strips 18 may not be divided into regions on the elastic material 2, i.e., the distribution density of the rubber strips 18 in each region may be set to be the same. The denier of the rubber band strips 18 is 250-300 denier, more preferably 280 denier, while the diameter of the rubber band strips 18 on the traditional sanitary product is generally 620D, the diameter of the rubber band strips 18 of the embodiment of the utility model is only 40-50% of the diameter of the traditional rubber band, and in addition, the distance between two adjacent rubber band strips 18 of the embodiment of the utility model is 1-2 mm. The plurality of rubber strings 18 are rubber strings 18 in a stretched state, i.e. the plurality of rubber strings 18 are in a stretched state when the elastic material 2 is prepared. The rubber band strips 18 adopt the arrangement mode, so that the wearing comfort can be greatly improved, a user can hardly feel the existence of the rubber band strips 18 in the elastic area of the trousers body in the wearing process, obvious stress positions can not appear, the elasticity is very uniform, and local tightening marks can not be caused.

Still further, the elastic material 2 can be used for preparing a front waistline or a rear waistline respectively, and in order to further improve the comfort of the product, when the elastic material 2 is used for preparing the front waistline, the stretching ratio of the elastic ribbon strip 18 can be set to be relatively small; when the elastic material 2 is used to prepare the rear waist circumference, the stretch ratio of the elastic ribbon 18 may be set to be relatively large. That is, the stretching ratios of the plurality of rubber bands 18 can be flexibly adjusted, and different stretching forces can be set according to the body types of infants. For example, the difference in abdominal girth before and after eating is relatively large, and the stretch ratio of the rubber band 18 may be set to be suitably low, for example, 2.2 to 2.8 times, and more preferably 2.6 to 2.8 times, so as to ensure that the abdomen is not tightened so much that the comfort is not affected. The stretch ratio of the elastic material 2 and the elastic ribbon strip 18 for the back waistline can be set to be relatively high, such as 3.2-3.5 times, more preferably 2.5-3.5 times, and even more preferably 2.5-3 times, so that the paper diaper can be more fit with the body, and the phenomenon of back leakage when urine is discharged can be prevented.

According to the embodiment of the utility model, the stretching ratio of the front waist elastic material 2 is set to be small, and the stretching ratio of the rear waist elastic material 2 is set to be large, so that the rear waist can be better attached to the rear waist, the front waist keeps proper elasticity, when the lung respiratory function of the infant is not developed perfectly, the abdomen drives the heart-lung function to be more important, and the stretching ratio of the front waist is reduced, so that the infant can be in a comfortable state after breathing or eating.

In a preferred embodiment, the first elastic nonwoven 17 and the second elastic nonwoven 19 are ultrasonically bonded, and are soft and comfortable without using a hot melt adhesive. More specifically, a plurality of rubber strips 18 are arranged in sequence and transversely and fixed between a first elastic non-woven fabric 17 and a second elastic non-woven fabric 19 through ultrasonic waves, and a plurality of ultrasonic bonding sites are formed on each rubber strip 18. The elastic material 2 is bonded through an ultrasonic process, the using amount of the hot melt adhesive is 0g, and the softness of the elastic material 2 is greatly improved. Meanwhile, the problem that the rubber band 18 retracts to cause serious elasticity loss due to the fact that the rubber amount is not uniform in the gluing process of the rubber band 18 can be avoided, and the problems that the trousers body is hard and the softness is not good due to the fact that the gluing amount is increased to ensure that the rubber band does not retract can be avoided. In addition, because no sizing process is adopted in the product manufacturing process, a melting cylinder of hot melt adhesive is not required to be heated, and the production line speed can be greatly increased (the whole machine can be upgraded by 30-100 percent, depending on the automation degree of a machine table). Moreover, the non-hot melt adhesive can reduce the odor of the product. Therefore, the ultrasonic compounding is adopted, so that the energy can be saved, the environment is protected (the single sanitary product consumes less 0.5g of hot melt adhesive, and 500 tons of hot melt adhesive can be saved according to the annual output of 10 hundred million sheets), and the cost is greatly saved. The first elastic non-woven fabric 17, the second elastic non-woven fabric 19 and the plurality of rubber strips 18 are compounded by ultrasonic waves, so that the flexibility of the material can be greatly released, and the material with excellent elasticity and extremely soft hand feeling is formed.

When the elastic material 2 of the embodiment of the present invention is provided with the plurality of rubber strips 18, the material mainly playing a role in elasticity in the elastic material 2 is the plurality of rubber strips 18 in the middle, the first elastic non-woven fabric 17 plays a main role in supporting and limiting the over-stretching of the second elastic non-woven fabric 19 and the rubber strips 18, and the gram weight of the first elastic non-woven fabric 17 is preferably 13 to 17 g/square meter. The second elastic nonwoven 19 functions primarily to maintain the bulk of the material and secondarily to provide partial elasticity, and the second elastic nonwoven 19 preferably has a grammage of 15 to 25 grams per square meter.

As another embodiment, the elastic material 2 may contain only the first elastic nonwoven 17 and the second elastic nonwoven 19 without providing the rubber band 18. At this time, in order to prevent the sanitary product from wearing too long or the elastic fiber yarns from breaking to reduce the resilience of the waist, the grammage of the first elastic nonwoven fabric 17 and the second elastic nonwoven fabric 19 can be increased to compensate for the loss of elasticity, so as to ensure that the sanitary product (such as pull-up pants) does not fall off in the using process. For example, the first elastic nonwoven fabric 17 can have a grammage of from 18 to 22 grams per square meter, more preferably from 20 grams per square meter, and the second elastic nonwoven fabric 19 can have a grammage of from 80 to 100 grams per square meter.

In a preferred embodiment, the first elastic nonwoven fabric 17 has a crimp contraction ratio of 50 to 60% of the crimped fiber, the crimp contraction ratio being a ratio of a difference between a straightened length and a length when the straightened and then curled state is restored to the straightened state, measured after crimping of the deformed yarn under a predetermined load, to the straightened length. The crimp shrinkage rate of the polyester yarn is about 5-25%, and the high shrinkage rate is about 35-50%. In the embodiment of the utility model, the crimp shrinkage rate of the crimped fibers in the first elastic non-woven fabric 17 is 50-60%, so that the stretch ratio of the first elastic non-woven fabric 17 can reach 2 times or more than 2 times, and the stretch ratio of the second elastic non-woven fabric 19 is 3-4 times, and the arrangement mode enables the elastic material 2 to have good elasticity and good wearing comfort.

The elastic material 2 provided by the embodiment 1 of the utility model is suitable for hygienic products, can be used as the waist elastic material 2 to completely replace rubber bands on the waist and abdomen parts of traditional products, and the elastic material 2 can greatly improve the wearing comfort, has good fit with users, can not generate strangle marks, and can not cause the slipping of the hygienic products such as walking pants in the using process.

Example 2

The preparation method of the anti-tightening breathable waistline elastic material 2 comprises the following steps:

first elastic nonwoven 17 preparation step: extruding the molten first fibers and the molten second fibers side by side to form single fiber yarns, cooling the single fiber yarns to form curled fibers, cross-lapping the curled fibers, and performing thermal bonding and fixing forming to obtain a first elastic non-woven fabric 17; wherein the first fibers and the second fibers have inconsistent heat-shrinkable strength;

second elastic nonwoven 19 preparation step: spraying a high-temperature molten polymer raw material through a spinneret plate to form elastic yarns, stacking the elastic yarns in an unordered manner, cooling and adhering to obtain a second elastic non-woven fabric 19;

compounding: and compounding the first elastic non-woven fabric 17 and the second elastic non-woven fabric 19 to obtain the composite material.

In the compounding step, as a preferred embodiment, a plurality of rubber strips 18 are taken, the plurality of rubber strips 18 are sequentially arranged and bonded to the first elastic nonwoven fabric 17 by ultrasonic waves to form a semi-finished product, and then the second elastic nonwoven fabric 19 is compounded with the semi-finished product by ultrasonic waves, so that the plurality of rubber strips 18 are sandwiched between the first elastic nonwoven fabric 17 and the second elastic nonwoven fabric 19. Also a plurality of rubber band strips 18 are prefabricated compound with first elasticity non-woven fabrics 17 and second elasticity non-woven fabrics 19, in the health supplies production process, need not to pull tens of rubber bands at the platform, can greatly strengthen the stability of platform, reduce inferior useless piece to bring the promotion of the productivity that is showing.

In the process of forming the elastic material 2 according to the embodiment of the present invention, the plurality of rubber ribs 18 are first ultrasonically combined with the first elastic nonwoven fabric to form a semi-finished product, and then ultrasonically combined with the second elastic nonwoven fabric 19. Because the rubber strips 18 are in a stretching state when being extruded and stretched, a framework is required to be used for supporting, and the first elastic non-woven fabric 17 just plays a role; the elastic deformation of the second elastic nonwoven fabric 19 itself is large, and if the elastic strips 18 are firstly combined with the second elastic nonwoven fabric 19, the second elastic nonwoven fabric 19 is easily wrinkled, and when the wrinkled second elastic nonwoven fabric 19 is combined with the first elastic nonwoven fabric 17, the forming material is uneven, which affects the appearance and the stretching function of the elastic material 2.

In a preferred embodiment, the plurality of rubber ribs 18 and the first elastic nonwoven fabric 17 are in a stretched state during the process of being combined; preferably, the stretching ratio of the plurality of rubber ribs 18 is 2.0 to 4 times; more preferably, the stretch ratio of the plurality of rubber ribs 18 is 2.2 to 3.5 times, or 2.5 to 3.5 times, or 2.2 to 2.8 times. When the elastic material 2 is used as the front waistline of the sanitary product, the stretching ratio of the rubber band strip 18 can be set to be relatively small; when the elastic band is used as the back waistline of the sanitary product, the stretching ratio of the elastic band 18 can be set to be relatively large.

In a preferred embodiment, the first fibers are polypropylene fibers and the second fibers are polyethylene fibers; the polymer material is polyurethane, and the second elastic nonwoven fabric 19 is polyurethane elastic nonwoven fabric.

The preparation method of the anti-tightening breathable waistline elastic material provided by the embodiment 2 is simple and convenient in process and suitable for industrial production. The elastic material 2 obtained by the method for preparing the anti-frail breathable waist elastic material provided in embodiment 2 of the present invention has the excellent properties that have been described in detail in embodiment 1, and will not be described again.

Example 3

As shown in fig. 1-6 and 8-9, the breathable comfortable pants structure comprises an outer layer nonwoven fabric 1, an inner layer nonwoven fabric 3, a front waistline, a rear waistline and a waistline nonwoven fabric 4; the front waist is clamped at the front waist end between the outer layer non-woven fabric 1 and the inner layer non-woven fabric 3; the back waist is clamped at the back waist end between the outer layer non-woven fabric 1 and the inner layer non-woven fabric 3; the waist non-woven fabric 4 is arranged above the inner layer non-woven fabric 3, and the waist non-woven fabric 4 at least covers the front waist end and the back waist end of the inner layer non-woven fabric 3. That is, the waistline nonwoven fabric 4 of the embodiment of the present invention is a separately installed station, and is not formed by inward folding of the outer layer nonwoven fabric 1 (as shown in fig. 7, which is a cross-sectional view of a conventional pull-up diaper, the outer layer nonwoven fabric 1 is folded inward), and the waistline nonwoven fabric 4 is separately used as an inner liner fabric to be combined with the inner layer nonwoven fabric 3, so that the feeling of strangeness or pressure caused by contraction of the rubber band on the sanitary product can be completely avoided, and the comfort level of the waist and abdomen can be further enhanced; meanwhile, the design of the product is more flexible, and materials can be saved.

In a preferred embodiment, the waist nonwoven fabric 4 is a contracted waist nonwoven fabric 4. Waistline non-woven fabrics 4 itself need not to possess elasticity, and in this trousers body structure forming process, preceding waistline is in tensile state with back waistline at the compound operation in-process of board for waistline non-woven fabrics 4 is in the contraction state after the preparation is accomplished, is in half stretching state when wearing.

In a preferred embodiment, the waist nonwoven fabric 4 includes a front waist nonwoven fabric covering the front waist end of the inner layer nonwoven fabric 3 and a rear waist nonwoven fabric; the back waist non-woven fabric covers the back waist end of the inner layer non-woven fabric 3. By adopting the setting mode, the waistline non-woven fabric 4 does not need to fully cover the inner layer non-woven fabric 3, only needs to cover the front waist area and the rear waist area of the inner layer non-woven fabric 3, can save the materials of the waistline non-woven fabric 4, and can ensure the comfort. Of course, it is also possible if the waist nonwoven 4 completely covers the inner layer nonwoven 3.

As a preferred embodiment, the front waist nonwoven fabric completely overlaps with the front waist in the perpendicular projection direction, or the front waist nonwoven fabric covers the front waist; the back waistline non-woven fabric is completely overlapped with the back waistline, or the back waistline non-woven fabric covers the back waistline. That is, the size specification of the front waist nonwoven fabric may be in agreement with the size specification of the front waist, or larger than the front waist; the size of the back waistline nonwoven fabric can be consistent with the size of the back waistline or larger than the back waistline. This arrangement can completely avoid discomfort of the waist and abdomen caused by the elastic material 2.

In a preferred embodiment, the waist non-woven fabric 4 can be made of a quick-drying fabric, for example, medical gauze, which is a green and environment-friendly product with high safety and good hygroscopicity, can be naturally degraded, can quickly discharge sweat on the surface of skin, and can keep sanitary products, such as trousers, dry and comfortable when people walk. Of course, the waist nonwoven 4 may be made of other textile fabrics having a quick moisture-removing property.

In a preferred embodiment, the inner layer non-woven fabric 3 is an SSS non-woven fabric which is soft, skin-friendly and has small deformation, the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1 are matched to fix the leg elastic body 9 which can shrink the crotch, and the inner layer non-woven fabric 3 can isolate the leakage-proof membrane 7, so that the leakage-proof membrane 7 is prevented from directly contacting with the outside, and the leakage-proof membrane 7 is prevented from being scratched to cause urine leakage.

In a preferred embodiment, the disposable patch 8 is further included, the disposable patch 8 is disposed on the outer layer nonwoven fabric 1, and the disposable patch 8 is disposed on the outer side of the outer layer nonwoven fabric 1 (i.e. the side facing away from the crotch of the user).

As a preferred embodiment, a plurality of leg elastic bodies 9; the leg elastic bodies 9 are divided into two groups, namely front waist side leg elastic bodies and rear waist side leg elastic bodies; one end of the front waist side leg elastic body is fixed between the inner layer non-woven fabric 3 and the front waist circumference, and the other end is fixed between the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1; one end of the back waist side leg elastic body is fixed between the inner layer non-woven fabric 3 and the back waistline, and the other end is fixed between the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1. The leg elastic bodies 9 play a role in shrinking the crotch, so that the product can be attached to the inner sides of the thighs, the leakage-proof and body-fitting functions of the product are improved, and the leg elastic bodies 9 can form a shrinking skirt, so that the appearance of the product is more attractive.

In a preferred embodiment, in the front waist side leg elastic body, one end fixed between the inner layer nonwoven fabric 3 and the front waist is referred to as an elastic body front waist end, and one end fixed between the inner layer nonwoven fabric 3 and the outer layer nonwoven fabric 1 is referred to as an elastic body front crotch end; the front waist end of the elastic body bends and extends towards the front crotch end of the elastic body to form two radians with different bending directions. For the back waist side leg elastics, one end fixed between the inner layer nonwoven fabric 3 and the back waist is designated as an elastic body back waist end, and one end fixed between the inner layer nonwoven fabric 3 and the outer layer nonwoven fabric 1 is designated as an elastic body back crotch end; the elastic body back waist end is bent and extended towards the elastic body back crotch end to form two arcs with different bending directions. That is to say, preceding waist side shank elastomer and back waist side shank elastomer all form the elastomer of similar S-shaped structure, accord with human structure for the product is more next to the shin, improves leak protection ability. When the trousers body structure provided with the S-shaped rubber band is matched with the absorption inner body of the sanitary product for use, the last line of defense of leakage-proof protection can be formed.

As a preferable embodiment, the front waist side leg elastic body and the back waist side leg elastic body are provided with the elastic body front crotch part end and the elastic body back crotch part end which are parallel to each other in an up-and-down direction, so that the structure is reasonable, the leakage-proof capability can be improved, and the production is convenient.

In a preferred embodiment, the elastomeric front crotch end and the elastomeric back crotch end are both closer to the front waist side of the pant body structure and relatively farther from the back waist side of the pant body structure. That is, when the front waist side of the pants body is folded toward the back waist side, the ends of the elastic body front crotch and the elastic body back crotch are located at one side of the folding line and close to the front waist side. This design accords with human structure for the product is laminated with the user more, improves the leak protection ability.

In a preferred embodiment, the number of the front waist side leg elastic bodies is 2, the front waist side leg elastic bodies are respectively arranged at the left side and the right side of the trousers body structure, and each group of the front waist side leg elastic bodies comprises two elastic bodies; the quantity of back waist side shank elastomer is 2 groups, sets up respectively in the left and right sides of trousers body structure, and two elastomers are all wrapped up in back waist side shank elastomer of each group. Adopt 2 elastomers to form a set of shank elastomer, quantity is suitable, can play fine crotch portion contraction effect.

As a preferred embodiment, both the front waistline and the back waistline are formed of the elastic material 2; the elastic material 2 comprises a first elastic non-woven fabric 17 and a second elastic non-woven fabric 19 which are compounded up and down, wherein the first elastic non-woven fabric 17 is formed by cross lapping of curled fibers; the second elastic nonwoven fabric 19 includes at least one fiber layer formed by stacking elastic fiber yarns in an unordered manner. More specifically, the elastic material 2 comprises a first elastic non-woven fabric 17 and a second elastic non-woven fabric 19 which are compounded through ultrasonic waves, wherein the first elastic non-woven fabric 17 comprises cross-lapping bicomponent crimped fibers, the bicomponent crimped fibers comprise first fibers and second fibers which are arranged in parallel, and the first fibers and the second fibers are bonded in parallel to form crimped fibers with the crimp shrinkage rate of 50-60%; the first elastic nonwoven fabric 17 has a grammage of from 18 to 22 grams per square meter and the second elastic nonwoven fabric 19 has a grammage of from 80 to 100 grams per square meter. The superior performance of the elastic material 2 with such a structure is described in detail in embodiment 1, and will not be described again.

As a preferred embodiment, both the front waistline and the back waistline are formed of the elastic material 2; the elastic material 2 comprises a first elastic non-woven fabric 17, a second elastic non-woven fabric 19 and a plurality of rubber strips 18 which are sequentially arranged and clamped between the first elastic non-woven fabric 17 and the second elastic non-woven fabric 19; the first elastic nonwoven fabric 17 is formed by cross lapping of curled fibers; the second elastic nonwoven fabric 19 includes at least one fiber layer formed by stacking elastic fiber yarns in an unordered manner. More specifically, the elastic material 2 includes a first elastic nonwoven fabric 17, a second elastic nonwoven fabric 19, and a plurality of elastic strips 18 sequentially arranged and sandwiched between the first elastic nonwoven fabric 17 and the second elastic nonwoven fabric 19; the first elastic non-woven fabric 17 comprises cross-lapped bicomponent crimped fibers, the bicomponent crimped fibers comprise first fibers and second fibers which are arranged in parallel, and the first fibers and the second fibers are bonded in parallel to form crimped fibers with the crimp shrinkage rate of 50-60%; the first elastic nonwoven fabric 17 has a grammage of 13-17 g/square meter; the second elastic nonwoven fabric 19 has a grammage of 15 to 25 grams per square meter; the plurality of rubber bands 18 are the rubber bands 18 in a stretching state, the denier number of each rubber band 18 is 250-300 denier, and the distance between two adjacent rubber bands 18 is 1-2 mm. The superior performance of the elastic material 2 with such a structure is described in detail in embodiment 1, and will not be described again.

As a preferred embodiment, both the front waistline and the back waistline are formed of an elastic material; the elastic material comprises an elastic film, and a plurality of air holes are distributed on the elastic film. More specifically, the elastic material comprises a TPU elastic film, the gram weight of the TPU elastic film is 30-50 g/square meter, a plurality of air holes are distributed on the TPU elastic film, the aperture of each air hole is 0.5-1.5mm, and the distance between every two adjacent air holes is 5-10 mm. Furthermore, the elastic material comprises a TPU elastic film, the gram weight of the TPU elastic film is 30-50 g/square meter, the elasticity is moderate, and the contraction force is proper. The elastic film is provided with a plurality of air holes which can permeate sweat generated by the diaper covering the skin and moisture in excrement. The aperture of the air holes is 0.5-1.5mm, and the TPU film can keep the flexibility in the use process within the aperture range; in order to ensure the resilience of the TPU film, the distance between two adjacent air holes is 5-10mm, and the air holes are distributed uniformly or at intervals. In addition, the air holes are preferably small round holes or small elliptical holes, and the round holes or the elliptical holes have the most excellent mechanical property and are not easy to break through materials.

In a preferred embodiment, the longitudinal lengths of the front waistline and the rear waistline may be equal to each other, but may be different from each other. For example, taking XL size pull-ups as an example, the longitudinal length of the front waist and the back waist can be set to 120-150 mm. According to the development condition of the infant, the length of the elastic area is 120-150mm, the front waist circumference can just cover the area from the upper part of the navel to the upper part of the thigh of the infant, and the rear waist circumference can just cover the rear waist area above the hip of the infant. The design is close-fitting and has high comfort level, and the infant is not worried about the sliding down or displacement deflection of the pull-up pants caused by the fact that the pull-up pants absorb excessive urine in the walking process.

The breathable and comfortable pants body structure provided by the embodiment 3 is reasonable in component arrangement, good in breathability, good in anti-fraying performance, soft and comfortable, and suitable for various types of sanitary products, including infant pull-ups, adult incontinence pants, female physiological pants and the like.

Example 4

As shown in fig. 1-2, a multiple leakproof inner body comprises an absorbent core 15, side leakproof isolation margins 5 and a leakproof film 7; the left side and the right side of the absorption core body 15 are both provided with the side leakage prevention separation edges 5; the leakage-proof film 7 is arranged at the bottom of the absorption core body 15, and the left side and the right side of the leakage-proof film 7 respectively extend upwards to form a U-shaped structure wrapping the left side and the right side of the absorption core body 15. The leakage-proof film 7 is breathable and waterproof, and the leakage-proof film 7 is arranged below the absorption core body 15 and is also arranged on two sides of the side leakage prevention absorption core body 15, so that the leakage-proof performance of the product can be greatly enhanced. The anti-leakage film 7 forms a U-shaped anti-leakage structure, the height of the two sides of the anti-leakage film 7 can be equal to the height of the side face of the absorption core body 15, or lower than the height of the side face of the absorption core body 15, and the anti-leakage film 7 can greatly improve the anti-side leakage performance of the product as long as the U-shaped structure is formed to wrap at least one part of the side face of the absorption core body 15. The anti-leakage film 7 is in a more three-dimensional U-shaped state in the actual use process, so that liquid can be better kept in the U-shaped state and is difficult to leak.

And for the traditional inner body, the leakage-proof film 7 is only arranged at the bottom of the absorption core body 15, the leakage-proof film 7 is bonded with the outer layer of the side leakage-proof separation edge 5 through hot melt adhesive, if the glue application amount is low, a gap is probably formed between the leakage-proof film 7 and the outer layer of the side leakage-proof separation edge 5, and liquid flows out through the gap between the leakage-proof film 7 and the side leakage-proof separation edge 5. The leakage-proof film 7 of the embodiment of the utility model is arranged between the two layers of the side leakage-proof separation edge 5, and the double-sided adhesive is used, so that the probability of side leakage is extremely low.

In a preferred embodiment, the multiple leakproof inner body comprises an absorption core body 15, a side leakproof isolation edge 5 and a leakproof film 7; at least one longitudinally extending first elastic body 14 is provided in each of the left and right sides of the absorbent core 15; the left side and the right side of the absorption core body 15 are both provided with the side leakage prevention separation edges 5, the upper parts of the side leakage prevention separation edges 5 are turned inwards to form free ends, and at least one second elastic body 10 extending longitudinally is arranged in each free end; the leakage-proof film 7 is arranged at the bottom of the absorption core body 15, and the left side and the right side of the leakage-proof film 7 respectively extend upwards to form a U-shaped structure wrapping the left side and the right side of the absorption core body 15.

The first elastic body 14 is also called as a core plane rubber band, and the core plane rubber band is arranged to enable the absorption core body 15 to be contracted into an inverted omega shape through the contraction of the rubber band in the use process, so that the absorption core body 15 can wrap the vulva/genitals of a baby, and urine leakage is not easy to generate. The second elastic body 10 is also called a leakage-proof three-dimensional rubber band, and the second elastic body 10 can enable the side leakage-proof isolation edge 5 to stand better when in use, so that the leakage-proof capability is improved. This body further sets up the three-dimensional rubber band of leak protection in multiple leak protection on the basis that has set up core plane rubber band, can make absorption core 15 keep the omega state of invering, avoids making the absorption core 15 of invering omega shape become U font or a font because urine action of gravity, plays the dual effect of preventing the edge leakage. The leakproof three-dimensional rubber band is in a semi-stretching state in a use state, can release the leakproof capability and cannot cause damage to the skin due to overhigh stretching degree.

In a preferred embodiment, the lower portion of the side leakage preventing barrier 5 is folded inward to form a fixed end, and the left and right sides of the leakage preventing film 7 extend outward through the fixed end of the side leakage preventing barrier 5 and are embedded in the side leakage preventing barrier 5. The leakage-proof film 7 of the embodiment of the utility model is arranged in the middle of the side leakage-proof separation edge 5, and the double-sided adhesive is adopted, so that the side leakage probability is extremely low, and the side leakage-proof capability of the product can be greatly enhanced.

In a preferred embodiment, the leakage preventing film 7 extends into the free end of the side leakage preventing barrier 5, thereby further improving the side leakage preventing ability.

In a preferred embodiment, the leakage-proof film 7 is a PE leakage-proof film 7, which is air-permeable and water-impermeable.

In a preferred embodiment, the inner body is designed such that the top sheet 11 is in direct contact with the skin of the human body during use, and the inner body is designed to provide a good contact feeling to the skin and low friction, and to reduce the liquid content in the top sheet 11 and keep the skin dry. The material of the surface layer 11 is suitable for being made of a material with very fine and smooth fibers, and is soft and skin-friendly.

As a preferred embodiment, the absorbent core body 15 comprises an absorbent core 12, a core wrapping cloth 6 and a surface layer 11, wherein the left side and the right side of the absorbent core 12 are respectively provided with at least one longitudinally extending first elastic body 14; the inner core wrapping cloth 6 encloses the absorption inner core 12 and the first elastic body 14 to form a core body; the facing 11 covers at least the top surface of the core body. In this embodiment, the first elastic bodies 14 are firstly arranged on both sides of the absorbent core 12 and then wrapped by the inner core wrapping cloth 6, but the absorbent core 12 is not firstly wrapped by the inner core wrapping cloth 6, and then the first elastic bodies 14 are arranged on both sides thereof and then wrapped again by the covering layer 13. The embodiment of the utility model has the advantages that: the first elastic body 14 (core plane rubber band) is a high elastic material, the cover layer 13 is a low gram weight non-woven fabric, and in the operation process of the machine, the reciprocating fluctuation of the compound station of the first elastic body 14 and the cover layer 13 is easily caused by the traction and tension of the machine, so that the first elastic body 14 is loose and tight at one side, and the protection capability of the first elastic body 14 is greatly reduced. Meanwhile, the material fluctuation can cause the production process to be unstable, influence the efficiency of the machine table and increase the invisible maintenance cost. The first elastic bodies 14 are arranged on two sides of the absorption inner core 12 and then are wrapped by the inner core wrapping cloth 6, so that the problems can be well avoided.

In a preferred embodiment, the core wrap cloth 6 is disposed at the bottom of the absorbent core 12, and the core wrap cloth 6 is folded upward to cover at least a part of the top surface of the absorbent core 12, which prevents the polymer resin particles of the absorbent core 12 from being exposed. The inner core wrapping cloth 6 can fully cover the top surface of the absorption inner core 12, but in order to save cost, the inner core wrapping cloth 6 can only cover one part of the top surface of the absorption inner core 12, and the arrangement mode can save materials and avoid exposure of polymer resin particles.

As a preferred embodiment, the core body further comprises a covering layer 13, wherein the covering layer 13 covers the top surface of the core body and wraps at least one part of the bottom surface of the core body downwards; the surface layer 11 is arranged on the top surface of the covering layer 13. The cover layer 13 is made of SMS hydrophilic non-woven fabric, and has a main function of preventing urine from permeating back to the surface after being absorbed, and preventing polymer resin particles of the absorption core 12 from being exposed. The covering layer 13 and the skin-friendly surface layer 11 of the embodiment of the utility model are compounded to ensure that the fibers are very compact, so that SAP particles in the absorption inner core 12 cannot pass through the compact layer formed between the covering layer 13 and the skin-friendly surface layer 11 in the using and extruding process, and the leakage is avoided. This design ensures that there are no more than 5 SAP absorbent particles on facing layer 11.

In a preferred embodiment, the number of the second elastic bodies 10 is 2, 3, 4 or 5. More preferably, the number of the second elastic bodies 10 is 4, and 4 second elastic bodies 10 are respectively arranged in the left and right side leakage-proof separating edges 5, so that the side leakage-proof separating edges 5 form a more three-dimensional structure when in use. Further, for 4 second elastic bodies 10, the distance between the roots is 5mm to 6.25 mm. And the conventional side leakage prevention separation edge 5 is only internally provided with 2 elastic bodies, the height of an elastic extension area is only about 5mm, the side leakage prevention separation edge 5 is easy to turn outwards, the side leakage prevention separation edge 5 is flattened from a U shape due to the action of gravity after the absorption core body 15 absorbs liquid, and the leakage prevention capacity is gradually reduced. In the embodiment of the utility model, under the condition that 4 second elastic bodies 10 are respectively arranged on two sides of the side leakage preventing partition edge 5, the height of the elastic extension area of the side leakage preventing partition edge 5 can reach 15-20mm, and the side leakage preventing partition edge is in a vertical state in the actual use process, and can be matched with the first elastic body 14 (a core body plane rubber band) to keep the inner body in a water drop-shaped state, so that the urine leakage preventing capability is greatly enhanced.

As a preferred embodiment, the inner body is a rectangular inner body, which conforms to the structure of the human body and facilitates the absorption of urine, and the rectangular structure is also convenient for production.

The multi-leakage-proof inner body provided in example 4 has a rational structure, the height of the inner wrap on both sides of the absorbent core 15 is preferably 10 to 15mm, and the crotch region of the diaper can be formed into a drop-like shape and smoothly hold urine when the diaper is worn. Absorb 12 both sides of inner core because set up the reason that absorbs 15 plane rubber bands of core, the core part of absorbing 15 both sides inside rolls sets up to first leak protection system, first ripples impact force when not only can keeping out the urine and excrete, the mobility that slows down the urine, and have the absorption function concurrently moreover, even if partial urine rushes out first leak protection system and temporarily flows to absorbing core 15 outside, because absorb core 15 and possess two sides absorption performance, also can be absorbed core 15 and absorb into. If the absorption capacity of the absorption core body 15 is reduced after the liquid is absorbed for a plurality of times, the absorption speed is reduced, and a second leakage-proof protection system consisting of the side leakage-proof separation edge 5, the leakage-proof film 7 and the second elastic body 10 (a leakage-proof three-dimensional rubber band) starts to play a role. Even in the case of lying on the side, the side leakage prevention barrier 5 has 4 elastic rubber strings, the standing height reaches 62mm, and about 80ml of liquid with weak fluidity can be blocked (80ml of liquid is about a large amount of urine excretion of an infant at a time for about 12 months, and the data is taken from GB/T28004-2011 paper diapers, sheets and pads). Finally, when the diaper is forgotten to be replaced or is not replaced for a long time due to other reasons, the inner part in the shape of the water drop is gradually flattened when the use limit is reached, and the leg elastic body 9 (S-shaped rubber band) arranged in the bottom layer trousers body (such as the butterfly trousers body) plays a role in the last protection for maintaining the inner shape of the water drop.

In conclusion, the inner body provided by the embodiment 4 is provided with two leakage-proof protection systems, and when the product is formed, the leg elastic bodies 9 in the trousers body are matched, so that the product can form three leakage-proof protection systems together, and the product has extremely strong side leakage prevention capability.

Example 5

As shown in FIGS. 1-6 and 8-9, the anti-fray, leakproof, comfortable sanitary article comprises the anti-fray, breathable waist elastic material 2 of example 1. Since the anti-strangling and anti-leaking comfortable sanitary product according to example 5 includes the anti-strangling and air-permeable waist elastic material 2 according to example 1, the anti-strangling and anti-leaking comfortable sanitary product according to example 5 has all the excellent properties of the anti-strangling and air-permeable waist elastic material 2 according to example 1, and will not be described again.

Example 6

An anti-frail, leak-proof, comfortable sanitary article comprising the breathable, comfortable pant structure of example 3. Since the anti-frail, leakage-proof and comfortable sanitary product according to example 6 includes the air-permeable and comfortable pants structure according to example 3, the anti-frail, leakage-proof and comfortable sanitary product according to example 6 has all the superior properties of the air-permeable and comfortable pants structure according to example 3, and thus the description thereof is omitted.

Example 7

A leakproof comfortable sanitary article comprising the multi-leakproof inner body of example 4. Since the anti-strangling and leakage-preventing comfortable sanitary article according to example 7 includes the multi-leakage-preventing inner body according to example 4, the anti-strangling and leakage-preventing comfortable sanitary article according to example 7 has all the excellent properties of the multi-leakage-preventing inner body according to example 4, and thus, the description thereof is omitted.

Example 8

As shown in figures 1-6 and 8-9, the comfortable sanitary product comprises a bottom-layer trouser body and an inner body arranged on the bottom-layer trouser body; the bottom layer trousers body comprises a front waistline and a back waistline, and the front waistline is formed by the anti-tightening breathable waistline elastic material 2; the back waistline is formed by the gasproof breathable waistline elastic material 2.

In a preferred embodiment, the anti-stretch breathable waist elastic material 2 comprises a first elastic nonwoven fabric 17 and a second elastic nonwoven fabric 19 which are ultrasonically combined, wherein the first elastic nonwoven fabric 17 comprises cross-lapped bicomponent crimped fibers, the bicomponent crimped fibers comprise polypropylene fibers and polyethylene fibers which are arranged side by side, and the polypropylene fibers and the polyethylene fibers are bonded side by side to form the crimped fibers with the crimp shrinkage rate of 50-60%; the first elastic nonwoven fabric 17 has a grammage of 18 to 22 grams per square meter; the second elastic non-woven fabric 19 comprises at least one polyurethane fiber layer, the polyurethane fiber layer is formed by orderly overlapping polyurethane elastic fiber yarns, and the gram weight of the second elastic non-woven fabric 19 is 80-100 g/square meter.

As a preferred embodiment, the seta-prevention breathable waist elastic material 2 comprises a first elastic nonwoven fabric 17, a second elastic nonwoven fabric 19, and a plurality of rubber band strips 18 sequentially arranged and sandwiched between the first elastic nonwoven fabric 17 and the second elastic nonwoven fabric 19; the first elastic non-woven fabric 17 comprises cross-lapping bi-component crimped fibers, the bi-component crimped fibers comprise polypropylene fibers and polyethylene fibers which are arranged in parallel, and the polypropylene fibers and the polyethylene fibers are bonded in parallel to form the crimped fibers with the crimp shrinkage rate of 50-60%; the first elastic nonwoven fabric 17 has a grammage of 13-17 g/square meter; the second elastic non-woven fabric 19 comprises at least one polyurethane fiber layer, the polyurethane fiber layer is formed by orderly overlapping polyurethane elastic fiber yarns, the gram weight of the second elastic non-woven fabric 19 is 15-25 g/square meter, and the stretching magnification is 3-4 times; the plurality of rubber bands 18 are the rubber bands 18 in a stretching state, the denier number of each rubber band 18 is 250-300 denier, and the distance between two adjacent rubber bands 18 is 1-2 mm; the stretch ratio of the back waistline is greater than or equal to that of the front waistline.

As a preferred embodiment, the elastic material 2 comprises a TPU elastic film, the TPU elastic film has the gram weight of 30-50 g/square meter, moderate elasticity and proper contraction force. The elastic film is provided with a plurality of air holes which can permeate sweat generated by the diaper covering the skin and moisture in excrement. The aperture of the air holes is 0.5-1.5mm, and the TPU film can keep the flexibility in the use process within the aperture range; in order to ensure the resilience of the TPU film, the distance between two adjacent air holes is 5-10mm, and the air holes are distributed uniformly or at intervals. In addition, the air holes are preferably small round holes or small elliptical holes, and the round holes or the elliptical holes have the most excellent mechanical property and are not easy to break through materials.

In a preferred embodiment, the inner body comprises an absorbent core 15, a side leakage prevention barrier 5, and a leakage prevention film 7; at least one longitudinally extending first elastic body 14 is provided in each of the left and right sides of the absorbent core 15; the left side and the right side of the absorption core body 15 are both provided with the side leakage prevention separation edges 5, the upper parts of the side leakage prevention separation edges 5 are turned inwards to form free ends, and at least one second elastic body 10 extending longitudinally is arranged in each free end; the leakage-proof film 7 is arranged at the bottom of the absorption core body 15, and the left side and the right side of the leakage-proof film 7 respectively extend upwards to form a U-shaped structure wrapping the left side and the right side of the absorption core body 15.

In a preferred embodiment, the lower portion of the side leakage preventing barrier 5 is folded inward to form a fixed end, and the left and right sides of the leakage preventing film 7 extend outward through the fixed end of the side leakage preventing barrier 5 and are embedded in the side leakage preventing barrier 5.

As a preferred embodiment, the leakage-preventing membrane 7 extends into the free end of the side leakage-preventing barrier 5.

As a preferred embodiment, the absorbent core body 15 comprises an absorbent core 12, a core wrapping cloth 6 and a surface layer 11, wherein the left side and the right side of the absorbent core 12 are respectively provided with at least one longitudinally extending first elastic body 14; the inner core wrapping cloth 6 encloses the absorption inner core 12 and the first elastic body 14 to form a core body; the facing 11 covers at least the top surface of the core body.

As a preferred embodiment, the core body further comprises a covering layer 13, wherein the covering layer 13 covers the top surface of the core body and wraps at least one part of the bottom surface of the core body downwards; the surface layer 11 is arranged on the top surface of the covering layer 13.

In a preferred embodiment, the number of the second elastic bodies 10 is 2, 3, 4 or 5.

As a preferred embodiment, the bottom layer trousers body also comprises an outer layer non-woven fabric 1, an inner layer non-woven fabric 3 and a waistline non-woven fabric 4; the front waist is clamped at the front waist end between the outer layer non-woven fabric 1 and the inner layer non-woven fabric 3; the back waistline is clamped at the back waistline end between the outer layer non-woven fabric 1 and the inner layer non-woven fabric 3; the waist non-woven fabric 4 is arranged above the inner layer non-woven fabric 3, and the waist non-woven fabric 4 at least covers the front waist end and the back waist end of the inner layer non-woven fabric 3.

In a preferred embodiment, the waist nonwoven fabric 4 includes a front waist nonwoven fabric 4 and a rear waist nonwoven fabric 4, and the front waist nonwoven fabric 4 covers the front waist end of the inner layer nonwoven fabric 3; the back waist non-woven fabric 4 covers the back waist end of the inner layer non-woven fabric 3.

In a preferred embodiment, the waist nonwoven fabric 4 is made of medical gauze.

As a preferred embodiment, a plurality of leg elastic bodies 9; the leg elastic bodies 9 are divided into two groups, namely front waist side leg elastic bodies and rear waist side leg elastic bodies; one end of the front waist side leg elastic body is fixed between the inner layer non-woven fabric 3 and the front waist circumference, and the other end is fixed between the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1; one end of the back waist side leg elastic body is fixed between the inner layer non-woven fabric 3 and the back waistline, and the other end is fixed between the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1.

In a preferred embodiment, in the front waist side leg elastic body, one end fixed between the inner layer nonwoven fabric 3 and the front waist is referred to as an elastic body front waist end, and one end fixed between the inner layer nonwoven fabric 3 and the outer layer nonwoven fabric 1 is referred to as an elastic body front crotch end; the front waist end of the elastic body bends and extends towards the front crotch end of the elastic body to form two radians with different bending directions.

In a preferred embodiment, one end of the back waist side leg elastic member fixed between the inner layer nonwoven fabric 3 and the back waist is referred to as an elastic back waist end, and one end fixed between the inner layer nonwoven fabric 3 and the outer layer nonwoven fabric 1 is referred to as an elastic back crotch end; the elastic body back waist end is bent and extended towards the elastic body back crotch end to form two arcs with different bending directions.

In a preferred embodiment, the sanitary article is a baby walker, also known as a baby pull-up. When the sanitary article is a pair of trousers for babies to walk, the structure of the trousers body and the inner body are assembled and then folded, and then the sewing of the trousers body is completed through the combining parts 16 at the two sides of the waistline.

The anti-fray, anti-leakage, comfortable and sanitary article according to example 8 can include one or more of the anti-fray, air-permeable, comfortable waist elastic material 2 according to example 1, the air-permeable, comfortable pant structure according to example 3, and the multi-leakage, inner body according to example 4, and they are reasonably combined with each other by optimizing the design, so that the anti-fray, anti-leakage and comfortable and sanitary article according to example 8 has all the excellent properties of the anti-fray, air-permeable, comfortable waist elastic material 2 according to example 1, the air-permeable, comfortable pant structure according to example 3, and the multi-leakage, inner body according to example 4, and it will not be described herein again.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. The breathable comfortable pants body structure is characterized by comprising an outer-layer non-woven fabric, an inner-layer non-woven fabric, a front waistline, a rear waistline and a waistline non-woven fabric; the front waistline is clamped at the front waistline end between the outer layer non-woven fabric and the inner layer non-woven fabric; the back waist is clamped at the back waist end between the outer layer non-woven fabric and the inner layer non-woven fabric; the waistline non-woven fabric is arranged above the inner-layer non-woven fabric and at least covers the front waist end and the rear waist end of the inner-layer non-woven fabric.

2. The breathable, conformable pant structure of claim 1, wherein the waist-circumference nonwoven comprises a front waist-circumference nonwoven and a rear waist-circumference nonwoven, the front waist-circumference nonwoven overlying the front waist end of the inner layer nonwoven; the back waist non-woven fabric covers the back waist end of the inner layer non-woven fabric.

3. The breathable, conformable pant structure of claim 2, wherein, in a perpendicular projection, the front waist nonwoven completely overlaps or covers the front waist; the back waistline non-woven fabric is completely overlapped with the back waistline, or the back waistline non-woven fabric covers the back waistline.

4. The structure of breathable and comfortable pants according to claim 1, wherein said waist nonwoven fabric is made of medical gauze.

5. The breathable, conformable pant structure of claim 1, further comprising leg elastics; the leg elastic bodies are divided into two groups, namely a front waist side leg elastic body and a back waist side leg elastic body; one end of the front waist side leg elastic body is fixed between the inner layer non-woven fabric and the front waistline, and the other end of the front waist side leg elastic body is fixed between the inner layer non-woven fabric and the outer layer non-woven fabric; one end of the back waist side leg elastic body is fixed between the inner layer non-woven fabric and the back waistline, and the other end of the back waist side leg elastic body is fixed between the inner layer non-woven fabric and the outer layer non-woven fabric.

6. The breathable, comfortable pant structure of claim 5, wherein, for the front waist side leg elastics, the end secured between the inner nonwoven and the front waist circumference is designated as an elastic front waist end, and the end secured between the inner nonwoven and the outer nonwoven is designated as an elastic front crotch end; the front waist end of the elastic body is bent and extended towards the front crotch end of the elastic body to form two radians with different bending directions;

for the back waist side leg elastic body, one end fixed between the inner layer non-woven fabric and the back waist is marked as an elastic body back waist end, and one end fixed between the inner layer non-woven fabric and the outer layer non-woven fabric is marked as an elastic body back crotch end; the elastic body back waist end is curved and extends towards the elastic body back crotch end to form two arcs with different bending directions.

7. The breathable, conformable pant structure of claim 1, wherein the front waist circumference and the back waist circumference are each formed of an elastic material; the elastic material comprises a first elastic non-woven fabric and a second elastic non-woven fabric which are compounded up and down, and the first elastic non-woven fabric is formed by cross lapping of curled fibers; the second elastic non-woven fabric comprises at least one fiber layer formed by disordered overlapping of elastic fiber yarns;

or the elastic material comprises a first elastic non-woven fabric, a second elastic non-woven fabric and a plurality of rubber strips which are sequentially arranged and clamped between the first elastic non-woven fabric and the second elastic non-woven fabric; the first elastic non-woven fabric is formed by lapping curled fibers in a crossed manner; the second elastic non-woven fabric comprises at least one fiber layer formed by disordered overlapping of elastic fiber yarns;

or, the elastic material comprises an elastic film, and a plurality of air holes are distributed on the elastic film.

8. The breathable, conformable pant structure of claim 7, wherein the elastic material comprises a first elastic nonwoven and a second elastic nonwoven ultrasonically bonded together, the first elastic nonwoven comprising cross-lapped, bicomponent crimped fibers comprising first fibers and second fibers arranged side-by-side, the first fibers and second fibers bonded side-by-side to form crimped fibers having a crimp contraction of 50-60%; the gram weight of the first elastic non-woven fabric is 18-22g per square meter, and the gram weight of the second elastic non-woven fabric is 80-100g per square meter;

or the elastic material comprises a first elastic non-woven fabric and a second elastic non-woven fabric which are compounded through ultrasonic waves, and a plurality of rubber ribs which are sequentially arranged and clamped between the first elastic non-woven fabric and the second elastic non-woven fabric; the first elastic non-woven fabric comprises cross-lapping bi-component crimped fibers, the bi-component crimped fibers comprise first fibers and second fibers which are arranged in parallel, and the first fibers and the second fibers are bonded in parallel to form crimped fibers with the crimp shrinkage rate of 50-60%; the gram weight of the first elastic non-woven fabric is 13-17g per square meter; the gram weight of the second elastic non-woven fabric is 15-25g per square meter; the denier number of each rubber rib is 250-300 denier, and the distance between two adjacent rubber ribs is 1-2 mm;

or the elastic material comprises a TPU elastic film, the gram weight of the TPU elastic film is 30-50g per square meter, a plurality of air holes are distributed on the elastic film, the aperture of each air hole is 0.5-1.5mm, and the distance between every two adjacent air holes is 5-10 mm.

9. Anti-frail, leakproof, comfortable sanitary article, comprising a breathable, comfortable pant structure according to any of claims 1-8.

10. The anti-frail, leak-proof, comfortable sanitary product of claim 9, further comprising an interior body disposed over said pant structure, said interior body comprising an absorbent core, side-leak resistant barrier edges, and a leak-proof membrane; the left side and the right side of the absorption core body are both provided with the side leakage prevention separation edges; the leak protection membrane set up in absorb the bottom of core, the left and right sides of leak protection membrane is equallyd divide and is upwards extended respectively and establish, makes the leak protection membrane forms the parcel absorb the U type structure of the core left and right sides.

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