CN217089651U - Health-care sitting trousers - Google Patents

Abstract

The application relates to the field of clothes, in particular to a pair of body-building sitting trousers, which comprises a front piece, a rear piece and a crotch part, wherein the top of the body-building sitting trousers is surrounded with a trouser top, the bottom of the body-building sitting trousers is symmetrically surrounded with two trouser legs, the inner surfaces of the trouser legs are provided with first elastic belts, the first elastic belts are woven by blended yarns, each first elastic belt comprises a first weaving section, a second weaving section and a third weaving section, the first weaving section corresponds to the outer edge of the crotch part and the outer edge of the bottom of the front piece, the second weaving section corresponds to the bottom edge of the joint of the front piece and the rear piece, and the third weaving section corresponds to the outer edge of the bottom of the rear piece; the knitting density of the first knitting section is smaller than that of the second knitting section, and the knitting density of the second knitting section is smaller than that of the third knitting section. The elastic band is provided with the first elastic bands with three sections of different knitting densities, so that the outer edge of the crotch and the outer edge of the bottom of the front piece are small in elasticity, tightness of groins is reduced, blood circulation of the groins is guaranteed, and the elastic band is comfortable to wear.

Description

Health-care sitting trousers

Technical Field

The application relates to the field of clothing, in particular to sitting and strengthening trousers.

Background

Underpants are the next to the shin clothing that male sex and women all daily wore, are made through tailorring and concatenation sewing by anter, back part and crotch portion, and often the underpants position at underpants top sets up the rubber band, sets up the rubber band in the bottom of a trouser leg position of inside bottom both sides to improve the fitting degree with the human body when the trousers body is worn, make the trousers body be difficult for shifting.

The applicant considers that the elastic force of one circle of rubber band is the same for the rubber bands at the bottoms of the trousers bottoms, so that when a person sits down after wearing the trousers, the rubber bands at the groin tightly press the groin of the person, tight feeling is generated, the person is uncomfortable to wear, blood circulation at the groin is influenced, and the health of the person is influenced by wearing the trousers with strong tight feeling for a long time.

Disclosure of Invention

In order to solve the bottom of a trouser leg position of present pants to the human body, this application provides a strong trousers of sitting, adopts following technical scheme:

a pair of sitting and strengthening trousers comprises a front piece, a rear piece and a crotch portion, wherein the bottom of the front piece is connected with the front end of the crotch portion, the bottom of the rear piece is connected with the rear end of the crotch portion, two sides of the top of the front piece are connected with two sides of the top of the rear piece, the top of the front piece and the top of the rear piece are encircled to form a trouser top, and two sides of the bottom of the front piece, two sides of the bottom of the rear piece and the outer side of the crotch portion are encircled to form two symmetrically arranged trouser legs; the inner surface of each trouser leg is provided with a first elastic belt, each first elastic belt is woven by blended yarns and comprises a first weaving section, a second weaving section and a third weaving section, the first weaving section corresponds to the outer edge of the crotch and the outer edge of the bottom of the front piece, the second weaving section corresponds to the bottom edge of the joint of the front piece and the rear piece, and the third weaving section corresponds to the outer edge of the bottom of the rear piece; the knitting density of the first knitting section is smaller than that of the second knitting section, and the knitting density of the second knitting section is smaller than that of the third knitting section.

For the tight sense problem of feeling of solving the bottom of a trouser leg rubber band, the pants structure on the market at present has the bottom of a trouser leg seamless setting of adoption to reduce the tight sense of feeling to human groin, but the pants of this type bottom of a trouser leg seamless, arouse the turn-up condition in bottom of a trouser leg edge easily, when the state transform is stood in human body seat, turn-up takes place in bottom of a trouser leg edge, influences the no trace wearing effect and the travelling comfort of dress of pants.

The first elastic belt on the inner surface of the trouser leg is set into three sections of knitting sections, the knitting density of the first knitting section is smaller than that of the second knitting section, and the knitting density of the second knitting section is smaller than that of the third knitting section, so that the first elastic belt is of a structure with gradually changed knitting density, the knitting density is higher, the elasticity is higher, the knitting density gradually-changed characteristic of the first elastic belt is higher, the elasticity of the outer edge of the crotch part and the outer edge of the bottom of the front piece is smaller, the tightening feeling of the groin is reduced, the blood circulation of the groin is guaranteed, and the trousers are comfortable to wear. The second elastic section corresponding to the joint of the front piece and the rear piece has higher weaving density than the first elastic section and higher elasticity than the first elastic section, so that the joint of the front piece and the rear piece has an elastic buffering effect, the phenomenon that the joint of the front piece and the rear piece is pulled by external force to cause separation in daily wearing can be reduced, and the structural damage of underpants is reduced. The third elastic section corresponding to the outer edge of the bottom of the rear piece has higher knitting density than the second elastic section and higher elasticity than the second elastic section, so that the proud flesh below the hip can be pulled and collected to straighten the hip.

This application sets up to weave the structure of density gradual change through with first elastic webbing, can adapt to human groin, buttock and pants anter and back part connection stability for difficult the tight sense of tightening that produces when human dress, and can carry buttockss below proud flesh, it is comfortable and easy to wear, and the practicality is high.

Optionally, the inner surface of the underpants is provided with a second elastic band, and the second elastic band is woven by blended yarns; the knitting density of the second elastic band is greater than or equal to the knitting density of the third knitting segment.

The second elastic belt is arranged, so that the underpants have the function of elastic tightness adjustment, the second elastic belt is also woven by blended yarns, the edge of the second elastic belt corresponding to the top of the front piece and the edge of the second elastic belt corresponding to the top of the rear piece can be arranged into a structure with gradually changed weaving density sections, the elasticity of the second elastic belt corresponding to the edge of the top of the front piece is smaller, and the tightening feeling of the abdomen is reduced; the knitting density of the second elastic belt can also be set to be consistent, but not to be a structure with gradually changed knitting density sections, so that the uniform elastic effect can be exerted on the waist and the abdomen, and the underwear wearing effect can be stabilized. The knitting density of the second elastic belt can be equal to or greater than that of the third knitting section, so that the elasticity of the underpants can ensure the stability of the underpants.

Optionally, the blended yarn is formed by blending cotton fiber yarns and silica gel yarns.

This application adopts cotton fiber silk and silica gel silk blending to form the mixed yarn, weaves it again and forms first elastic band, second elastic band, contains the silica gel silk in first elastic band, the second elastic band that makes, utilizes the close skin nature of silica gel silk for first elastic band, second elastic band can be stable with the human laminating, and then make the difficult aversion in underpants, the bottom of a trouser leg position of strong sitting trousers, improve the stability in wear of strong sitting trousers. Wherein the silica gel wires are prepared by extruding a silica gel material into filaments.

In addition, the arranged first elastic belt and the second elastic belt can prevent the trouser legs and the trouser legs from curling easily, so that the trousers are comfortable to wear; and the silica gel silk that contains in first elastic band, the second elastic band melts when being heated to have certain viscidity, can be with first elastic band and the bottom of a trouser leg position hot pressing laminating connection stability through the hot pressing mode, can be with the second elastic band and the bottom of a trouser leg position hot pressing laminating connection stability through the hot pressing mode in the same way. Or a hot melt adhesive film can be arranged between the first elastic belt and the inner surface of the trouser legs, a hot melt adhesive film is arranged between the second elastic belt and the inner surface of the trouser legs, the first elastic belt is attached to the trouser legs in a hot pressing mode, the second elastic belt is attached to the trouser legs in a hot pressing mode, and the silica gel yarns have soft characteristics, so that the hardening phenomenon after hot pressing attachment and solidification of the hot melt adhesive films can be reduced, and the wearing is skin-adhering and comfortable.

The traditional fitting process is characterized in that more adhesive is coated at the joint for pasting, and the contraction condition can occur after the adhesive is solidified, so that the contraction and the wrinkle conditions occur on the underpants and the bottoms of the trousers, and the wearing skin fitting degree of the fitness pants is influenced. The utility model provides a first elastic band and second elastic band adopt the mixed yarn of silicon-containing glue silk to weave and form, and the silicon glue silk has certain cohesiveness when being heated the melting, can be connected first elastic band and bottom of a trouser leg position hot pressing laminating stably, and it is stable to be connected second elastic band and bottom of a trouser leg position hot pressing laminating, and the cooling back molding is stable, reduces the use amount of viscose, reduces the shrink condition that viscose or glue solidification appear after cooling for the whole roughness of strong trousers of sitting is high.

Optionally, the width of the first elastic belt is 0.8-2.5cm, the first elastic belt can be stably attached to the groin and the hip of a human body, and the wearing comfort of the sitting-and-health trousers is ensured; if the width of the first elastic band is too small, the fit between the first elastic band and the groin and the hip is reduced, and if the width of the first elastic band is too large, the groin, the private part and the hip are obviously affected by foreign body, and the wearing comfort is reduced.

Optionally, the width of the second elastic belt is 1-3cm, so that the second elastic belt can be stably attached to the waist and abdomen of a human body, and the wearing comfort of the sitting and health pants is ensured; if the width of the second elastic band is too small, the fit between the second elastic band and the abdomen is reduced, and if the width of the second elastic band is too large, the wearing comfort is reduced.

Optionally, the inner surface of the crotch portion is provided with a skin-friendly cotton layer and a first hot melt adhesive film layer, and the first hot melt adhesive film layer is arranged between the outer surface of the skin-friendly cotton layer and the inner surface of the crotch portion.

The skin-friendly cotton layer is arranged on the inner surface of the crotch part, so that the skin-friendly performance of the crotch part of the sitting and health pants to the private part can be improved; the skin-friendly cotton layer is bonded with the crotch stably by preferably adopting a hot melt adhesive film, and the peripheral edge of the skin-friendly cotton layer is bonded with the inner surface of the crotch stably, so that the middle part of the skin-friendly cotton layer is soft and comfortable, and the wearing comfort is improved; if the whole fabric of close skin cotton layer and the whole hot laminating of crotch internal surface, then make the whole hardness increase in crotch position, produce the foreign matter sense to private position easily, reduce the snugness of fit of crotch position.

Optionally, the front piece, the rear piece and the crotch portion are all cut from silicon cotton fabric, and the silicon cotton fabric is formed by blending and weaving cotton fiber yarns and silicon fiber yarns.

Optionally, the silicon fiber yarn is composed of a cotton fiber core and a silicon gel layer coated on the surface of the cotton fiber yarn.

The silicon fiber layer is arranged on the surface of the cotton fiber core, and the silicon cotton fabric is woven by blending the silicon fiber layer and the cotton fiber layer, so that the silicon cotton fabric for making the cut-out and fitness pants contains silicon fiber layer components, can be stably attached to the skin of a human body, has high attachment degree, is not easy to slip, and has good setting property when being worn. On the other hand, the silicon cotton fabric is adopted to prepare the sitting pants, the first elastic belt is attached to the pants head portion in a hot-pressing mode, the second elastic belt is attached to the pants foot portion in a hot-pressing mode, the silica gel layer components in the front piece, the rear piece and the crotch portion of the sitting pants are bonded with the silica gel wire components in the first elastic belt and the second elastic belt stably in a heating mode, the first elastic belt and the pants feet can be bonded stably, the second elastic belt and the pants heads can be bonded stably under the condition that a hot-melt adhesive film is not adopted, the use of glue or the hot-melt adhesive film is reduced, the production processes and raw materials are saved, the production efficiency is improved, the production cost is reduced, the hardening condition possibly generated after the glue or the hot-melt adhesive film is solidified can be reduced, the skin abrasion condition caused by hardening of the pants head edges and the pants foot edges is reduced, and the wearing is comfortable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the inner surfaces of the bottoms of the trousers legs are provided with three sections of first elastic belts with different knitting densities, the knitting density of the first knitting section is lower than that of the second knitting section, and the knitting density of the second knitting section is lower than that of the third knitting section, so that the first elastic belts are of a structure with gradually changed knitting densities, the elasticity of the outer edge of the crotch and the outer edge of the bottom of the front piece is smaller, the tightness feeling of the groin is reduced, the blood circulation of the groin is ensured, and the trousers are comfortable to wear; the elasticity of the second weaving section is larger than that of the first elasticity section, so that the joint of the front piece and the rear piece has an elastic buffering effect, the phenomenon that the joint of the front piece and the rear piece is pulled by external force to be separated in daily wearing is reduced, and the structural damage of underpants is reduced; the elasticity of the third weaving section is larger than that of the second elastic section, so that the pulling and gathering effect on proud flesh below the buttocks can be achieved, and the buttocks can be straightened.

2. This application sets up the second elastic band in underpants department, enables the underpants and has the elasticity tight regulation effect, and the weaving density of second elastic band can be equal with the weaving density of section is woven to the third or be greater than the weaving density of section is woven to the third, can make underpants elasticity can guarantee that pants dress is stable.

3. This application adopts the mixed yarn to weave and makes first elastic band, second elastic band, and the mixed yarn adopts cotton fiber silk and silica gel silk blending to form, contains the silica gel silk in the first elastic band that enables to make, the second elastic band, utilizes the close skin nature of silica gel silk for first elastic band, second elastic band can be stable with the human laminating, and then make the difficult aversion in underpants, the bottom of a trouser leg position of strong sitting trousers, improve the stability in dress of strong sitting trousers.

Drawings

FIG. 1 is a front elevational view of the outer surface of a pair of body-building pants according to the present application;

FIG. 2 is a schematic view of the back side of the outer surface of the pair of body-building pants of the present application;

FIG. 3 is a schematic view of the front structure of the inner surface of the pair of pants of the present application;

FIG. 4 is an exploded view of the front crotch portion of the inner surface of the pair of body-building pants of the present application;

FIG. 5 is a schematic view of the back side of the inner surface of the pair of body-building pants of the present application;

FIG. 6 is a schematic view of a blended structure of cotton fiber yarns and silica gel yarns of the first elastic belt and the second elastic belt;

FIG. 7 is a schematic front view of the inner surface of the pair of pants in accordance with example 2 of the present application, wherein the pants have a second hot-melt adhesive film and a third hot-melt adhesive film;

FIG. 8 is a schematic view of a cotton fiber and silicon fiber blended structure of a silicon cotton fabric in example 3 of the present application;

fig. 9 is an enlarged view of a portion a in fig. 8.

Description of reference numerals: 1. a front panel; 2. a rear panel; 3. a crotch part; 31. a skin-friendly cotton layer; 32. a first hot melt adhesive film layer; 4. the bottoms of the trousers legs; 5. underpants; 6. a first elastic band; 61. a first weaving section; 62. a second weaving section; 63. a third weaving section; 64. a second hot melt adhesive film layer; 7. a second elastic band; 71. a third hot melt adhesive film layer; 100. cotton fiber yarn; 200. silicon rubber silk; 300. silicon fiber filaments; 301. a cotton fiber core; 302. and (5) a silica gel layer.

Detailed Description

The present application is described in further detail below with reference to fig. 1 through 9.

The embodiment of the application discloses trousers for keeping fit.

Example 1

Referring to fig. 1-2, strong trousers of sitting include connect gradually fashioned anter 1, crotch portion 3 and back part 2, wherein, the bottom of anter 1 is connected with the front end of crotch portion 3, the bottom of back part 2 is connected with the rear end of crotch portion 3, the top both sides of anter 1 are connected with the top both sides of back part 2, so that the top of anter 1 encloses with the top of back part 2 and establishes formation underpants 5, the both sides of anter 1 bottom, the both sides of back part 2 bottom enclose with the outside of crotch portion 3 and establish two bottom of a trouser legs 4 that form the symmetry and set up. Referring to fig. 3 to 4, the inner surface of the crotch portion 3 is provided with a skin-friendly cotton layer 31, a first hot melt adhesive film layer 32 is disposed between the outer surface of the skin-friendly cotton layer 31 and the inner surface of the crotch portion 3, and the first hot melt adhesive film layer 32 is preferably disposed at the peripheral edge of the skin-friendly cotton layer 31 to stably attach the peripheral edge of the skin-friendly cotton layer 31 to the inner surface of the crotch portion 3 to fix the skin-friendly cotton layer 31.

The connected mode of above-mentioned anter 1, crotch portion 3 and back part 2 can be the integrated connection shaping, is the accessible promptly and cuts out anter 1, crotch portion 3 and back part 2 of an organic whole connection with the cloth, then covers the top both sides of anter 1 and the top both sides of back part 2 through hot melt adhesive membrane and closes hot pressing laminating connection or car seam connection, then forms strong trousers of sitting.

Or, can cut out anter 1, crotch portion 3 and back part 2 respectively with the cloth, then pass through hot melt adhesive film laminating connection or sewing with anter 1 bottom and crotch portion 3 front end and be connected, pass through hot melt adhesive film laminating connection or sewing with back part 2 bottom and crotch portion 3 rear end and be connected, pass through hot melt adhesive film laminating hot pressing laminating connection or sewing with the top both sides of anter 1 and back part 2 at last again.

Or, adopt the drum knitting way, weave the front panel 1, back panel 2 and crotch portion 3 once and shape, reduce the process of cutting out, connecting the cloth, raise production efficiency, lowering costs.

Referring to fig. 4 to 5, the inner surface of the bottom of the trousers 4 is provided with a first elastic band 6 with the width of 0.8-2.5cm, the inner surface of the underpants 5 is provided with a second elastic band 7 with the width of 1-3cm, and the first elastic band 6 and the second elastic band 7 are both woven by blended yarns. Referring to fig. 6, the blended yarn is formed by blending cotton fiber yarns 100 and silica gel yarns 200, and the silica gel yarns 200 are made by extruding silica gel materials into yarns.

Referring back to fig. 3 and 5, the first elastic belt 6 includes a first knitting section 61 corresponding to the outer edge of the crotch portion 3 and the bottom outer edge of the front panel 1, a second knitting section 62 corresponding to the edge where the front panel 1 and the rear panel 2 are joined, and a third knitting section 63 corresponding to the bottom outer edge of the rear panel 2; moreover, the knitting density of the first knitting section 61 is lower than that of the second knitting section 62, the knitting density of the second knitting section 62 is lower than that of the third knitting section 63, and the knitting density of the third knitting section 63 is lower than or equal to that of the second elastic band 7.

In the embodiment, the first elastic band 6 is bonded and connected to the inner surface of the pair of the sitting pants corresponding to the pants leg 4 through the second hot melt adhesive film 64, and one side edge of the first elastic band 6 protrudes out of the edge of the pants leg 4, and the protruding width is 0.2-0.4 cm; similarly, the second elastic band 7 is bonded and connected to the inner surface of the health pants corresponding to the underpants 5 through the third hot melt adhesive film 71, and the top edge of the second elastic band 7 protrudes out of the edge of the underpants 5, and the protruding width is 0.2-0.4 cm.

The implementation principle of the sitting and health pants of the embodiment is as follows: the method comprises the steps of extruding a silica gel material into filaments to obtain silica gel filaments 200, blending the silica gel filaments 200 with cotton fiber filaments 100, and weaving the silica gel filaments into a first elastic band 6 and a second elastic band 7 according to width design, wherein three groups of weaving sections with different weaving densities are arranged in the weaving of the first elastic band 6, and are a first weaving section 61, a second weaving section 62 and a third weaving section 63 in sequence, the weaving is performed by adopting the same blended yarn, the difference is only that the weaving density of each weaving section is different, specifically, the weaving density of the first weaving section 61 is smaller than that of the second weaving section 62, and the weaving density of the second weaving section 62 is smaller than that of the third weaving section 63.

Meanwhile, the trousers body is manufactured by adopting a cylindrical weaving mode; or cutting cloth sheets sequentially connected with the front sheet 1, the crotch 3 and the rear sheet 2 by adopting a one-piece cutting mode, and then connecting the two sides of the top of the front sheet 1 with the two sides of the top of the rear sheet 2 to obtain a trousers body; or cutting out the front piece 1, the rear piece 2 and the crotch part 3 respectively by adopting a subsection cutting mode, then connecting the bottom of the front piece 1 with the front end of the crotch part 3, connecting the bottom of the rear piece 2 with the rear end of the crotch part 3, and connecting the two sides of the top of the front piece 1 with the two sides of the top of the rear piece 2 to obtain the trousers body. Then, the first hot melt adhesive film layer 32 is attached to the peripheral edge of the skin-friendly cotton layer 31 and aligned with the inner surface of the crotch portion 3, and the peripheral edge of the outer surface of the skin-friendly cotton layer 31 is attached to the inner surface of the crotch portion 3 by a hot press method.

And then, the outer surfaces of the two first elastic belts 6 are stably attached to the inner surfaces of the parts, corresponding to the trouser legs 4, of the sitting and health pants in a hot pressing mode, specifically, the first weaving section 61 of the first elastic belt 6 is attached to the outer edge of the crotch 3 and the outer edge of the bottom of the front piece 1 in an aligning mode, the second weaving section 62 is attached to the bottom edge of the joint of the front piece 1 and the rear piece 2 in an aligning mode, and the third weaving section 63 is attached to the outer edge of the bottom of the rear piece 2 in an aligning mode. Similarly, the outer surface of the second elastic belt 7 is stably attached to the inner surface of the part of the sitting-up pants corresponding to the underpants 5 in a hot pressing mode, so that the sitting-up pants are manufactured.

Example 2

This embodiment differs from embodiment 1 described above in that: referring to fig. 7, the first elastic band 6 is attached to the inner surface of the corresponding bottom of the pair of strong pants 4 through the second hot melt adhesive film 64, and the second elastic band 7 is attached to the inner surface of the corresponding bottom of the pair of strong pants 5 through the third hot melt adhesive film 71.

The implementation principle of this embodiment is specifically: the outer surfaces of the two first elastic belts 6 are fitted to form a circle of second hot melt adhesive film layers 64, the second hot melt adhesive film layers 64 are spaced from the outer surfaces of the first elastic belts 6 by 0.2-0.4cm, the first elastic belts 6 fitted with the second hot melt adhesive film layers 64 are stably fitted with the inner surfaces of the parts, corresponding to the trouser legs 4, of the pair of the sitting trousers in a hot pressing mode, specifically, the first weaving sections 61 of the first elastic belts 6 are fitted with the outer edges of the crotch portions 3 and the outer edges of the bottoms of the front pieces 1, the second weaving sections 62 are fitted with the bottom edges of the joints of the front pieces 1 and the rear pieces 2, and the third weaving sections 63 are fitted with the outer edges of the bottoms of the rear pieces 2.

Similarly, a third hot-melt adhesive film layer 71 is attached to one circle of the outer surface of the second elastic belt 7, the third hot-melt adhesive film layer 71 is left with a width of 0.2-0.4cm in one circle of the outer surface of the second elastic belt 7, and the second elastic belt 7 attached with the third hot-melt adhesive film layer 71 is stably attached to the inner surface of the part, corresponding to the underpants 5, of the body-building pants in a hot pressing mode, so that the body-building pants are manufactured.

Other technical features are the same as those of embodiment 1, and will not be described again.

Example 3

This embodiment differs from embodiment 1 described above in that: the front sheet 1, the back sheet 2 and the crotch portion 3 are made of silicon cotton fabric, and referring to fig. 8-9, the silicon cotton fabric is formed by blending and weaving cotton fiber yarns 100 and silicon fiber yarns 300, wherein the silicon fiber yarns 300 are composed of cotton fiber cores 301 and silica gel layers 302 covering the surfaces of the cotton fiber yarns 100, the cotton fiber cores 301 can be particularly soaked in liquid silica gel, and the silica gel layers 302 are formed on the surfaces of the cotton fiber cores 301 after solidification.

The implementation principle of this embodiment is specifically: firstly, the cotton fiber core 301 is soaked in liquid silica gel, then the silicon fiber 300 is obtained through curing and forming, then the silicon fiber 300 and the cotton fiber 100 are blended to form blended yarn, and then the blended yarn is woven to form the silicon cotton fabric.

The silicon cotton fabric can be integrally cut into a whole sheet-shaped front sheet 1, a crotch part 3 and a back sheet 2; or the silicon cotton fabric is respectively cut to form the front piece 1, the back piece 2 and the crotch part 3, and then the front piece, the back piece and the crotch part are connected and formed in a pressing or sewing connection mode; or the silicon cotton fabric which is knitted into a cylinder to form the structure of the sitting pants.

The first elastic belt 6 is hot-pressed and jointed with the inner surface of the part corresponding to the trouser legs 4 of the trouser body, and the second elastic belt 7 is hot-pressed and jointed with the inner surface of the part corresponding to the trouser legs 5 of the trouser body, so that the sitting-up trousers are manufactured.

Other technical features are the same as those of embodiment 1, and will not be described again.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a strong trousers of sitting, includes anter (1), back part (2) and crotch portion (3), the bottom of anter (1) with the front end of crotch portion (3) is connected, the bottom of back part (2) with the rear end of crotch portion (3) is connected, the top both sides of anter (1) with the top both sides of back part (2) are connected, the top of anter (1) with the top of back part (2) is enclosed and is established formation underpants (5), the both sides of anter (1) bottom the both sides of back part (2) bottom with the outside of crotch portion (3) is enclosed and is established two bottom trousers (4) that form the symmetry and set up, its characterized in that: the inner surface of the trouser bottom (4) is provided with a first elastic belt (6), the first elastic belt (6) is woven by blended yarns, the first elastic belt (6) comprises a first weaving section (61), a second weaving section (62) and a third weaving section (63), the first weaving section (61) corresponds to the outer edge of the crotch (3) and the outer edge of the bottom of the front sheet (1), the second weaving section (62) corresponds to the bottom edge of the joint of the front sheet (1) and the rear sheet (2), and the third weaving section (63) corresponds to the outer edge of the bottom of the rear sheet (2); the first weaving section (61) has a weaving density smaller than that of the second weaving section (62), and the second weaving section (62) has a weaving density smaller than that of the third weaving section (63).

2. The pair of body-building pants of claim 1, wherein: the inner surface of the underpants (5) is provided with a second elastic band (7), and the second elastic band (7) is woven by blended yarns; the knitting density of the second elastic band (7) is greater than or equal to the knitting density of the third knitting section (63).

3. A pair of strong and sitting pants according to claim 1 or 2, wherein: the blended yarn is formed by blending cotton fiber yarns (100) and silica gel yarns (200).

4. The pair of body-building pants of claim 1, wherein: the width of the first elastic belt (6) is 0.8-2.5 cm.

5. A pair of body-building pants as claimed in claim 2, wherein: the width of the second elastic band (7) is 1-3 cm.

6. The pair of body-building pants of claim 1, wherein: the inner surface of crotch portion (3) is provided with close skin cotton layer (31) and first hot melt adhesive film layer (32), first hot melt adhesive film layer (32) set up in close skin cotton layer (31) the surface with between the inner surface of crotch portion (3).

7. The pair of body-building pants of claim 1, wherein: the front piece (1), the rear piece (2) and the crotch portion (3) are all made of silicon cotton fabric, and the silicon cotton fabric is formed by blending and weaving cotton fiber yarns (100) and silicon fiber yarns (300).

8. The pair of body-building pants of claim 7, wherein: the silicon fiber yarn (300) is composed of a cotton fiber core (301) and a silicon gel layer (302) coated on the surface of the cotton fiber yarn (100).

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