CN110916255A - Waist-head-free anti-slip underpants - Google Patents

Abstract

The invention discloses a pair of waist-head-free anti-slip underpants, which comprises a front piece, a rear piece and a bottom crotch, wherein the front piece, the rear piece and the bottom crotch are made of double-sided rib fabric, the left side and the right side of the rear piece or the front piece are respectively provided with a first dispensing part, and the first dispensing part comprises one or more first dispensing units; the left side limit that crotch and back piece and anter are connected, or the bottom of back piece and the bottom of anter are provided with the second and glue the portion, and the second is glued the portion and is glued the unit including one or more second point, and first point is glued the unit, is glued the unit and all be provided with the gluey point that a plurality of intervals set up on the third point. The waistband-free anti-slip underpants provided by the invention adopt the double-sided ribbing fabric with high spandex content, the girdling direction of the fabric is used as the girdling degree, so that the underpants have good stretching degree and resilience, and an anti-slip function, and the back piece, the front piece and the crotch are bonded through the glue dispensing part, so that the bonding is firm, the waistband is not needed, the tightness effect can be achieved, no stitching is caused, and the wearing comfort effect is good.

Description

Waist-head-free anti-slip underpants

Technical Field

The invention relates to the field of underwear products, in particular to waist-head-free anti-skidding underpants.

Background

At present, underwear products in the underwear industry are mainly sewn by front crotch, bottom crotch, side seams and waistband, and fabrics are applied to the underwear products by chemical fiber, cotton and modal fabrics, so that the underwear products are integrally provided with stitches, not concise and poor in wearing comfort effect; the elastic band for the waistband has poor rebound resilience, is uncomfortable to wear and can be removed after a long time; the waistband is sewn with the front piece and the back piece, and split sewing stitches appear, so that the waistband feels uncomfortable when being rubbed with the body after being worn.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a pair of waist-head-free anti-slip underpants, which solves the problems of friction discomfort, poor elastic cord resilience and the like caused by the split sewing of stitches of a conventional underpants product, and the technical scheme is as follows:

the invention provides a pair of waist-head-free anti-skidding underpants, which comprise a front piece, a rear piece and a bottom crotch, wherein the front piece, the rear piece and the bottom crotch are made of double-sided rib fabric, the component proportion of the double-sided rib fabric is that spandex accounts for 10-30%, the modal accounts for 70-90%, and the double-sided rib fabric is of a double-sided and rib structure; the front piece is connected with the rear piece, the left side edge and the right side edge of the rear piece or the front piece are respectively provided with a first dispensing part, the first dispensing part comprises one or more first dispensing units, and the shape of each first dispensing unit corresponds to the outline shape of the side edge of the rear piece or the front piece close to the first dispensing unit; the crotch is connected with the front piece and the rear piece, the left side edge and the right side edge of the crotch, which are connected with the rear piece and the front piece, or the bottom of the rear piece and the bottom of the front piece are provided with second glue dispensing parts, each second glue dispensing part comprises one or more second glue dispensing units, and the shape of each second glue dispensing unit corresponds to the shape of the edge of the crotch, the bottom of the rear piece or the bottom of the front piece; and a plurality of glue points arranged at intervals are arranged on the first glue dispensing unit, the second glue dispensing unit and the third glue dispensing unit.

Further, if the underpants are men underpants, the front piece is of a one-piece structure with a middle arc-shaped convex part formed by mould pressing and shaping through a mould.

Further, when the number of the first dispensing units is multiple, the multiple first dispensing units are arranged in parallel, a preset distance is kept between every two adjacent first dispensing units, the preset distance range is set to be 1.75-2 mm, and each first dispensing unit is in a straight line or a curve shape.

Further, the first glue dispensing unit is obliquely arranged relative to the vertical plane.

Further, when a plurality of second dispensing units are provided, the plurality of second dispensing units are arranged in parallel, a preset distance is kept between every two adjacent second dispensing units, the preset distance range is set to be 2-3 mm, and the shape of each second dispensing unit is a curve.

Further, in each first dispensing unit and each second dispensing unit, the number range of the dispensing points in each average length of 10 centimeters is set to be 38-45, and the gram weight total range of the dispensing points in each average length of 10 centimeters is set to be 0.02-0.065 g.

Further, the number range of the first dispensing unit and the second dispensing unit is set to be 2-5.

Further, the diameter of each glue dot is set to be in the range of 0.5-1.5 mm.

Further, the first dispensing part and the second dispensing part are formed by spraying glue by a dispensing device, the dispensing device is provided with a nozzle for spraying the glue, the height between the nozzle and the underpants is 35-55mm, and the moving speed of the nozzle is 120-150 mm/s.

Furthermore, the double-sided rib fabric is formed by mutually weaving warps and wefts, wherein the proportion of spandex in the warps and the wefts is 10% -30%, and the proportion of modal in the wefts is 70% -90%.

The technical scheme provided by the invention has the following beneficial effects:

a. the waistband-free anti-slip underpants provided by the invention adopt the double-sided ribbing fabric with high spandex content, the girdling degree is made in the cross grain direction of the fabric, so that the underpants have good stretching degree and resilience force, the back piece, the front piece and the bottom crotch are bonded by arranging the glue dispensing parts, the appearance of the front side and the appearance of the back side are consistent, the function of double-sided wearing is realized, meanwhile, the bonding is firm, the stability is high, the waistband is not needed, the tightness effect can be achieved, the underpants can not fall off after being worn, and the waistband-free anti-slip underpants have an anti-; after the glue is dispensed and bonded, no trace exists, the wearing comfort effect is good; compared with the traditional underpants, the novel underpants have higher innovation;

b. the waist-head-free anti-slip underpants provided by the invention greatly reduce the number of the split bonding surfaces, only have the front piece and back piece bonding surfaces and the crotch and front piece and back piece bonding surfaces, and compared with the traditional split sewing thread, the problem of uncomfortable stitch friction in the traditional sewing process is solved, the foot openings are smooth and comfortable without constraint, and the comfort is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a first dispensing portion of a pair of waistband-less slip resistant pants according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a second dispensing portion of a pair of non-waistband anti-slip pants provided in accordance with an embodiment of the present invention;

FIG. 3 is a front view of a men's underpants without waistband slip protection provided by an embodiment of the invention;

FIG. 4 is a front view of the front panel of a men's underpants without waistband slip protection underpants according to an embodiment of the invention;

FIG. 5 is a front view of the back panel of a men's underwear without waistband slip protection provided by an embodiment of the present invention;

figure 6 is a front view of the crotch of a men's underpants without waistband slip protection underpants according to an embodiment of the invention.

Wherein the reference numerals include: 1-first glue dispensing unit, 2-second glue dispensing unit, 3-front piece, 4-rear piece, 5-bottom crotch and 6-convex part.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

In one embodiment of the present invention, there is provided a pair of waist-head-free anti-slip underpants, referring to fig. 3 to 6, the underpants comprises a front sheet 3, a rear sheet 4 and a crotch 5, wherein the front sheet 3, the rear sheet 4 and the crotch 5 are all of a one-piece structure, the left and right sides of the front sheet are correspondingly bonded and connected with the left and right sides of the rear sheet, the front sheet 3 is connected with the rear sheet 4, the left and right sides of the rear sheet 4 or the front sheet 3 are respectively provided with a first dispensing part (if dispensing is performed on the rear sheet, a dispensing region is provided on the rear sheet, i.e. a first dispensing part is provided, if dispensing is performed on the front sheet, a dispensing region is provided on the front sheet, i.e. a first dispensing part is provided, i.e. a first dispensing part is not provided on the rear sheet), the first dispensing part comprises one or more first dispensing units 1, the shape of the first dispensing units 1 corresponds to the contour shape of the adjacent rear sheet or front sheet, referring to fig. 1, if the side edge of the rear sheet or the front sheet is a straight line, the shape of the first dispensing unit 1 is a straight line; if the side edge of the rear sheet or the front sheet is a curve, the shape of the first dispensing unit 1 is a curve; if the side edge of the back sheet or the front sheet is obliquely arranged relative to the vertical surface, the first dispensing part is obliquely arranged relative to the vertical surface (the vertical surface is vertical to the horizontal plane).

When a plurality of first dispensing units 1 are provided, the plurality of first dispensing units 1 are arranged in parallel, a preset distance is kept between every two adjacent first dispensing units 1, the distance range between every two adjacent first dispensing units 1 is set to be 1.75-2 mm, the shape of each first dispensing unit 1 corresponds to the contour shape of the bottom of the rear sheet or the front sheet, and the shape of each first dispensing unit 1 is a straight line or a curve; if the side edge of the back sheet or the front sheet is a straight line, the shape of each first glue dispensing unit 1 is a straight line; if the side of the back sheet or the front sheet is curved, each first dispensing unit 1 is shaped like a curve, and the curve is convex or concave, i.e. has an arc-shaped section. A plurality of glue points arranged at intervals are arranged on the first glue dispensing unit, and the number range of the glue points in each average 10 cm length in each first glue dispensing unit 1 is set to be 38-45, preferably 39; the total gram weight of glue sites per average 10 cm length was set in the range of 0.02-0.065 grams.

In the first dispensing portions on both sides, the number of the first dispensing units 1 included therein is the same, and if the first dispensing portion on the left side includes two first dispensing units, the first dispensing portion on the right side includes two first dispensing units. The number of the first gluing units 1 is set to be 2-5, the number is set according to the area of the front sheet or the rear sheet, and if the area is larger, the number of the first gluing units 1 is larger; if the area is smaller, the number of the first dispensing units 1 is smaller. The diameter of each glue dot is set to be 0.5-1.5 mm. The front piece and the rear piece are bonded through glue dispensing, so that the adhesive is firm and stable and has good air permeability.

The crotch 5 is connected with the front piece 3 and the rear piece 4, the upper side edge and the lower side edge of the crotch are bonded and connected with the bottom of the front piece and the bottom of the rear piece, the left side edge and the right side edge of the crotch 5 connected with the rear piece 4 and the front piece 3, or the bottom of the rear piece 4 and the bottom of the front piece 3 are provided with second glue dispensing parts, if glue is dispensed on the front piece and the rear piece, the bottom of the front piece and the bottom of the rear piece are provided with the second glue dispensing parts, so that the second glue dispensing parts do not need to be arranged on the crotch; if dispensing is carried out on the crotch, regions to be dispensed are arranged on two side edges of the crotch, namely, second dispensing parts are arranged, so that the second dispensing parts do not need to be arranged on the front piece and the rear piece, the second dispensing parts comprise one or more second dispensing units 2, and the shapes of the second dispensing units 2 correspond to the shapes of the upper edge and the lower edge of the crotch, or the bottom of the rear piece and the bottom edge of the front piece, which are close to each other, as shown in fig. 2.

When the number of the second dispensing units 2 is multiple, the multiple second dispensing units 2 are arranged in parallel, a preset distance is kept between every two adjacent second dispensing units 2, the distance range between every two adjacent second dispensing units 2 is set to be 2-3 mm, and the shape of each second dispensing unit 2 is a curve. A plurality of glue points arranged at intervals are arranged on the second glue dispensing units, and the number range of the glue points in each average 10 cm length in each second glue dispensing unit 2 is set to be 38-45, preferably 39; the total gram weight of the glue sites per average 10 cm length was set to a range of 0.02-0.065 grams.

In the second dispensing portions on both sides, the number of the second dispensing units 2 included therein is the same, and if the second dispensing portion on the left side includes two second dispensing units, the second dispensing portion on the right side includes two second dispensing units. The number range of the second glue dispensing units 2 is set to be 2-5, the number is set according to the area of the front sheet or the rear sheet, and if the area is larger, the number of the second glue dispensing units 2 is larger; if the area is smaller, the number of the second dispensing units 2 is smaller. The diameter of each glue dot is set to be 0.5-1.5 mm. Through some glue, will go up crotch and anter, back part bonding, not only firm stable but also gas permeability is good.

If the first dispensing part comprises two first dispensing units, the weight range of the two first dispensing units per average 10 cm length is 0.02-0.03 g, preferably 0.022 g; if the first dispensing part comprises three first dispensing units, the weight range of the three first dispensing units per average 10 cm length is 0.03-0.04 g, preferably 0.034 g; if the first dispensing part comprises four first dispensing units, the weight range of the four first dispensing units per average 10 cm length is 0.04-0.05 g, preferably 0.046 g; if the first dispensing section comprises five first dispensing units, the weight of the five first dispensing units per average 10 cm length is in the range of 0.05-0.065 g, preferably 0.058 g. This range of values applies equally to the second glue site.

The front piece, the back piece and the bottom crotch are made of double-sided rib fabrics, the raw materials of the double-sided rib fabrics comprise modal and spandex, and the total weight of the fabrics is taken as a reference, wherein the spandex accounts for 10-30%, the modal accounts for 70-90%, the spandex accounts for 15% preferably, and the modal accounts for 85% preferably; the double-sided rib fabric is formed by mutually weaving warps and wefts, wherein the proportion of spandex in the warps and the wefts is 10% -30%, and the proportion of modal in the wefts is 70% -90%. The width range of the double-sided rib fabric is 8-50cm, and spandex is short for polyurethane fiber and is elastic fiber; the modal fiber is a cellulose fiber, which is the same as the cellulose fiber of the rayon and is a pure rayon fiber.

The high-content spandex of the double-sided rib fabric and the cross grain direction of the fabric are taken as girth, the cross grain direction is shown as an arrow pointed by a in figure 3, so that the trousers body has good stretching degree and resilience, and the spandex content is high, so that the fabric has high elasticity; the band direction of surface fabric is done the girth, has good tensile degree and resilience force (restorability is good), and after the dress, even do not have traditional elastic cord as the waistband, need not the waistband promptly, only need anter, back part and crotch, can not drop after the dress, and non-skid property is good, can reach the elasticity effect equally, and is different from the tradition on the market and makes up the style, has avoided cutting apart the uncomfortable sense that makes up stitch seam and health friction and produce.

The raw material of the double-sided rib fabric adopts superfine modal (excellent skin-friendly property, touch feeling and luster like silk and excellent moisture absorption and vapor permeability); the texture adopts a rib structure, and has the characteristic of unidirectional knocking over; has high transverse tensile extensibility (high pulling degree) and high recovery; the edge can not be curled; the front side coil and the back side coil are staggered with each other, so that the fabric has better air permeability and moisture permeability compared with a double-sided tissue; the spandex is hot-melt, and the flexible chain segment molecular chains in the spandex form a certain network structure through certain crosslinking, so that the spandex can be tightly combined with yarns; because the interaction force among the molecular chains is small, the polyurethane elastic fabric can freely stretch and retract, has better elasticity and stretch resistance (achieves the combination effect relative to destructive shaping of low-temperature polyurethane fiber), and has smaller damage to the polyurethane fiber in a traceless hot laminating process; high-count and high-density ribs are adopted, the fabric is tightly connected in tissue, the fabric is cut randomly, and the coils are not scattered; the DIY neckline and the cuffs can be freely arranged, and the psychology that people in modern society pursue nature, optionally, comfortably and without restriction is matched.

Meanwhile, the double-sided rib fabric material can realize the double-color dyeing effect of the front side and the back side, namely the front side and the back side can be one color or two colors; the fabric also has the advantages of good elasticity and good restorability; the common fabric is sewn at the bottom opening of the underwear (the bottom opening is the bottom of the underwear), and the fabric does not need to be sewn, so that the operation procedures can be reduced, the turnups and the turnups cannot be raised after the underwear is worn, and the wearability of the underwear is the same as that of the common underwear with the bottom opening;

if the underpants are men underpants, the front piece is set into a one-piece structure with a middle arc-shaped convex part 6 through mould pressing and shaping, the mould pressing process is applied to the position of the front middle bag and the position of the side seam/crotch seam, the three-dimensional camber of the middle bag before mould pressing conforms to the curve of the crotch of men, and the underpants are comfortable to wear without constraint.

The invention provides a pair of waist-head-free anti-slip underpants, which is characterized in that front pieces, back pieces and a crotch are glued by glue for bonding, and the manufacture comprises the following steps:

s1, designing the style of the underpants;

s2, manufacturing a front piece, a back piece and a crotch with required sizes and shapes according to the designed style;

s3, respectively arranging two first glue dispensing parts required for glue dispensing when the back piece and the front piece are bonded and two second glue dispensing parts required for glue dispensing when the crotch is bonded with the back piece and the front piece according to the designed shapes and areas of the front piece, the back piece and the crotch;

s4, setting dispensing parameters of the dispensing equipment according to the selected first dispensing part and the selected second dispensing part;

the method comprises the following steps that a designer draws a style drawing according to development requirements, then makes a style paper edition according to the drawing, scans and reads the edition by using Asahi formation AGMS clothing CAD software according to the paper edition made by the designer (converting the style paper edition into an electronic edition), edits the edition by using Auto CAD software according to the scanned CAD drawing file, draws parts needing glue dispensing (determining a target area needing glue dispensing), intervals, heights between glue dispensing nozzles and fabrics, glue dispensing speed and the like, draws a DXF format drawing file of glue dispensing style, and transmits an edited glue dispensing file to a glue dispensing robot; after the glue dispensing equipment preheats the glue, the cleaning glue in the pipeline is discharged completely, and the working table is used for placing the back piece, the front piece or the crotch for glue dispensing operation; the glue is PUR (Polyurethane Reactive) glue capable of being pressed at low temperature, the PUR glue has excellent bonding strength, temperature resistance, chemical corrosion resistance and aging resistance, and the bonding fastness and stability of cloth bonding can be fully ensured by adopting a moisture curing mode as long as the humidity of the environment is controlled;

s5, dispensing the back sheet, front sheet or crotch of the first dispensing part and the second dispensing part selected in step S3 by the dispensing device in step S4, wherein the dispensing process is as follows: dispensing along the first dispensing part and the second dispensing part respectively to form a plurality of spaced dispensing points on the first dispensing part and the second glue injection; the PUR glue which can be pressed at low temperature is adopted, the temperature and the pressure required during the mould pressing are low, the damage to the cloth can not be caused,

the air permeability of the underwear fabric after the spot bonding is better than that of a double-faced cloth material, and the glue can be saved.

And S6, placing the front piece, the rear piece and the crotch after dispensing and dispensing in a mould pressing device, and carrying out mould pressing and fixing to obtain the underpants. The die pressing equipment comprises pre-fixed die pressing equipment and flat die pressing equipment, the pre-fixed die pressing equipment is adopted for pre-fixing, the die pressing equipment is used for die pressing and fixing after pre-fixing, and the pre-fixed technological parameters are as follows: the temperature range is set to 40-50 deg.C, and the pressure range is set to 1-2kg/m²The time range is set to 4-10s and the pre-fixing molding device may be an iron. Pre-fixingThe technological parameters of the die pressing fixation are as follows: the temperature range is set to 50-60 deg.C, and the pressure range is set to 1.5-3.5kg/m²The molding time was set in the range of 10-15 s.

The front piece, the rear piece and the crotch are bonded by arranging the adhesive dispensing part, and the air permeability of the cloth is reserved among the point-bonded gaps; compared with the conventional bonding process, the adhesive fastness is better guaranteed and the stability is better by the adhesive dispensing process; the point is glued and has been adopted microthermal PUR to glue, adopts the mode of moisture solidification, as long as the humidity of control environment, and the bonding fastness that the cloth combines can fully be guaranteed.

According to the invention, the adhesive dispensing equipment is adopted, and the cloth cut pieces are adhered by hot pressing, so that the automatic operation of garment processing is realized, the automation degree is high, and the overall production efficiency is improved; the temperature and pressure required in the process of mould pressing are low, high temperature and high pressure are not required, the energy consumption can be further reduced, the production cost is further reduced, and the mould pressing machine is environment-friendly and energy-saving.

According to the underpants provided by the invention, the back piece, the front piece and the bottom crotch are made of the double-sided rib fabric, the transverse stripe direction of the fabric is used as the girth, the underpants have good stretching degree and resilience, the back piece, the front piece and the bottom crotch are bonded through the glue dispensing process, the front and back appearances are consistent, the function of double-sided wearing is realized, meanwhile, the bonding fastness is high, the underpants cannot fall off after being worn, and the underpants have an anti-slip function; after dispensing, no trace exists, the wearing comfort effect is good; the waist head is not needed, the tightness effect can be realized, the traditional sewing style on the market is distinguished, and the uncomfortable feeling caused by the split sewing stitch and the body friction is avoided.

The tensile properties of the conventional waistband-containing underpants (comparative example) and the waistband-free underpants provided by the invention (example) are compared, the warp direction of the products of the example and the comparative example is tested by using a KES-G2 fabric biaxial tension device, the same test conditions are selected, the length is 20cm, the tensile is 500 times, and the test results are shown in Table 1.

TABLE 1 test results of tensile Properties of the products of this example and comparative example

From the test data, the rebound rate of the product with the glue dispensing part in the warp direction is obviously higher than that of the product produced by adopting the conventional process in the comparative example, so that the waist-head-free underwear has good stretching degree and rebound force, can realize the elasticity effect without waist heads, and can be normally worn.

The waistband-free anti-slip underwear provided by the invention has the advantages that the number of the split bonding surfaces is greatly reduced, only the front piece and the rear piece bonding surfaces and the crotch and the front piece and the rear piece bonding surfaces are provided, compared with the traditional split sewing thread, the problem of uncomfortable stitch friction in the traditional sewing process is solved, the foot opening is smooth, comfortable and free from constraint, the comfort is greatly improved, the appearance requirement of front and back double-sided wearing can be realized under the condition of tightness after wearing, and different requirements are met.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The waist-head-free anti-slip underpants are characterized by comprising a front piece (3), a rear piece (4) and a bottom crotch (5), wherein the front piece (3), the rear piece (4) and the bottom crotch (5) are made of double-sided rib fabric, the double-sided rib fabric is composed of 10-30% of spandex and 70-90% of modal ratio, and is of a rib structure;

the front sheet (3) is connected with the rear sheet (4), the left side edge and the right side edge of the rear sheet (4) or the front sheet (3) are respectively provided with a first glue dispensing part, the first glue dispensing part comprises one or more first glue dispensing units, and the shape of each first glue dispensing unit corresponds to the shape of the side edge of the rear sheet (4) or the front sheet (3) close to the first glue dispensing unit;

the crotch (5) is connected with the front piece (3) and the rear piece (4), the left side edge and the right side edge of the crotch (5), which are connected with the rear piece (4) and the front piece (3), or the bottom of the rear piece (4) and the bottom of the front piece (3) are provided with second glue dispensing parts, each second glue dispensing part comprises one or more second glue dispensing units, and the shapes of the second glue dispensing units correspond to the shapes of the bottom edges of the rear piece and the front piece or the two side edges of the crotch; and a plurality of glue points arranged at intervals are arranged on the first glue dispensing unit, the second glue dispensing unit and the third glue dispensing unit.

2. A pair of underpants without waistband as claimed in claim 1, wherein if the underpants are men underpants, said front sheet (3) is a one-piece structure with a central arc-shaped convex part (6) formed by mould pressing and shaping.

3. The non-waistband anti-skid underpants according to claim 1, wherein when the first dispensing units (1) are multiple, the multiple first dispensing units (1) are arranged in parallel, a preset distance is kept between two adjacent first dispensing units (1), the preset distance is set to be 1.75-2 mm, and each first dispensing unit (1) is in a straight line or a curve shape.

4. The non-waistband anti-slip pants of claim 1 wherein the first dispensing unit (1) is arranged obliquely to the vertical plane.

5. The non-waistband anti-skid underpants according to claim 1, wherein when the second dispensing units (2) are plural, the plural second dispensing units (2) are arranged in parallel, a preset distance is kept between two adjacent second dispensing units (2), the preset distance is set to be 2-3 mm, and each second dispensing unit (2) is in a curve shape.

6. The waistband-free slip-resistant underpants according to claim 1, wherein the number of glue dots per average 10 cm length in each of the first glue dispensing unit (1) and the second glue dispensing unit (2) is set to be in the range of 38-45, and the total gram weight of the glue dots per average 10 cm length is set to be in the range of 0.02-0.065 g.

7. The non-waistband anti-slip pants of claim 1 wherein the number of the first dispensing unit (1) and the second dispensing unit (2) is in the range of 2-5.

8. The non-waistband anti-slip pants of claim 1 wherein each glue dot has a diameter in the range of 0.5 to 1.5 mm.

9. The non-waistband antiskid underpants of claim 1 wherein the first dispensing portion and the second dispensing portion are formed by spraying glue on a dispensing device, the dispensing device has a nozzle for spraying glue, the height between the nozzle and the underpants is 35-55mm, and the moving speed of the nozzle is 120-150 mm/s.

10. The waistband-free anti-slip underpants according to claim 1, wherein the double-sided rib fabric is formed by weaving warp yarns and weft yarns, the ratio of spandex in the warp yarns to the weft yarns is 10% -30%, and the ratio of modal in the weft yarns is 70% -90%.

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