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CN-121970937-A - Universal disposable underpants and production process thereof

CN121970937ACN 121970937 ACN121970937 ACN 121970937ACN-121970937-A

Abstract

The invention discloses general disposable underpants and a production process thereof, which belong to the technical field of disposable underpants and comprise a front piece and a rear piece, wherein the front piece comprises a front waist part, a front telescopic part and a bottom rail, the rear piece comprises a rear waist part, a rear telescopic part and buttocks, the front piece is connected with the rear piece through the bottom rail, an inner lining is further arranged on the inner side of the bottom rail, and waist side sealing parts are arranged on the two sides of the rear waist part, the front telescopic part and the rear telescopic part.

Inventors

  • Request for anonymity

Assignees

  • 晋江市大满贯纺织品有限公司

Dates

Publication Date
20260505
Application Date
20260319

Claims (10)

  1. 1. The utility model provides a general disposable pants, includes front bezel and back part, its characterized in that front bezel includes front waist (4), preceding telescopic portion (1) and end rail (6), the back part includes back waist (3), back telescopic portion (2) and buttock (5), link to each other through end rail (6) between front bezel and the back part, still be provided with inside lining (7) in the inboard of end rail (6), back waist (3) and front waist (4), both sides of preceding telescopic portion (1) and back telescopic portion (2) all are provided with waist side seal portion (8), front bezel and back part are by first lamina (11), second lamina (12) and many elongated elastic telescoping structures (13) of a face opposition of this first lamina (11), elastic telescoping structures (13) are in order to follow the flexible direction and separate the mode of interval each other between first lamina (11) and second lamina (12), all be provided with a plurality of bonding parts (14) and a plurality of flexible structures (15) in flexible stripe configuration between flexible structures (13) in flexible direction and a plurality of flexible structures (13) are connected in succession.
  2. 2. A pair of general-purpose disposable pants according to claim 1, wherein the distance between adjacent elastic telescopic structures (13) is 0.4 mm-4 mm.
  3. 3. The universal disposable underpants according to claim 1, wherein the stretching ratio of the front waist portion (4) and the rear waist portion (3) in the longitudinal direction is 250% -350%, the stretching ratio of the front stretchable portion (1) and the rear stretchable portion (2) in the longitudinal direction is 150% -250%, and the stretching ratio of the buttocks (5) and the bottom rail (6) in the longitudinal direction is 130% -150%.
  4. 4. The universal disposable underpants according to claim 1, wherein the elastic telescopic structure (13) is a spandex elastic yarn with a thickness of 10-1000 dtex.
  5. 5. A pair of disposable pants according to claim 1, wherein the first and second sheet layers (11, 12) are respectively made of nonwoven fabric or woven fabric.
  6. 6. A production process of general disposable underpants is characterized in that: S1, providing a first sheet layer (11) and a second sheet layer (12) which are made of non-woven fabrics or woven fabrics, taking a plurality of slender spandex elastic filaments with the thickness of 10-1000 dtex as elastic telescopic structures (13), arranging the spandex elastic filaments in parallel at intervals of 0.4-4 mm along the telescopic direction and sandwiching the spandex elastic filaments between the first sheet layer (11) and the second sheet layer (12), and continuously bonding the first sheet layer (11) and the second sheet layer (12) in the length direction of the spandex elastic filaments and in the direction crossing the spandex elastic filaments by an adhesive to form a sheet bonding part (14) so as to obtain a continuous elastic composite material; s2, providing an inner liner (7) made of a hygroscopic material, and attaching the inner liner (7) to a preset position, corresponding to the bottom rail (6), of the elastic composite material prepared in the step S1 by spraying an adhesive or a hot pressing mode; S3, a die cutting and folding procedure, namely cutting the continuous elastic composite material attached with the lining (7) into an unfolded plane trousers shape by using a die cutting tool, and then folding the trousers shape in half along the central line of the trousers shape; S4, a waist side sealing and cutting procedure, namely welding and sealing the doubled trousers at the corresponding side edge positions of the front waist part (4) and the rear waist part (3) through ultrasonic welding or hot-press welding to form a waist side sealing part (8), cutting along the central line of the sealing part, and separating to obtain an independent single-piece disposable underpants finished product; S5, folding and packaging, namely folding the single-piece disposable underpants into a preset shape, sending the single-piece disposable underpants into a packaging film, vacuumizing, exhausting air, and performing heat sealing and cutting to prepare an independent sealed packaging product.
  7. 7. The process for producing a pair of general-purpose disposable pants according to claim 6, wherein in the step of compounding S1 the elastic filaments are pre-stretched at the time of sandwiching, the pre-stretching ratio is set according to the pants portion, the pre-stretching ratio is 200% -350% in the region corresponding to the front waist portion (4) and the rear waist portion (3), the pre-stretching ratio is 150% -250% in the region corresponding to the front stretchable portion (1) and the rear stretchable portion (2), and the pre-stretching ratio is 130% -150% in the region corresponding to the buttocks (5) and the bottom rail (6).
  8. 8. The process for producing a pair of disposable pants according to claim 6, wherein in the step of compounding S1 the adhesive is transferred onto the first sheet (11) or the second sheet (12) by applying a plate roller, the width of the adhesive pattern on the outer peripheral surface of the plate roller in the circumferential direction is 0.2mm to 4mm, and the interval between the adjacent adhesive patterns in the circumferential direction is 2mm to 8mm.
  9. 9. The process for producing a pair of disposable pants according to claim 6, wherein the adhesive is applied in an amount of 0.5g/m2 to 8g/m2 in the step of compounding the S1 elastic material.
  10. 10. The process for producing a pair of disposable pants according to claim 6, wherein in the step of S4 waist side sealing and cutting, the waist side sealing portion (8) formed by ultrasonic welding or thermocompression welding is formed in a discontinuous stripe-like or dot-like welding pattern, not integrally and continuously welded, so as to ensure softness at the portion.

Description

Universal disposable underpants and production process thereof Technical Field The invention relates to the technical field of disposable underpants, in particular to a general disposable underpants and a production process thereof. Background The disposable underpants are made of thin non-woven fabric or single-sided knitted fabric by tailoring and sewing, and are disposable products which are discarded after being used once, are in direct or indirect contact with human bodies and are used for achieving the purpose of physiological sanitation or health care of the human bodies. The traditional disposable underpants are generally provided with elastic structures only at waistline parts and leg surrounding parts, and the rest parts lack elasticity, so that the whole attaching degree is poor, the disposable underpants are easy to shift or fall off during movement, the elastic parts of the disposable underpants are mainly made of high-thickness (more than 210 Dtex) spandex elastic filaments, the arrangement interval is wider, the local pressure is concentrated, and the disposable underpants are easy to leave an indentation on the skin after being worn for a long time, so that discomfort is caused. The technical conditions have the defects that the conventional disposable underpants are required to be produced in various sizes such as S, M, L, XL, XXL, XXXL and the like, the product line is complicated, the difficulty is brought to the selection of consumers, the inventory and management cost of manufacturers is increased, meanwhile, different underpants are required to be designed due to physiological structure differences of men and women, and the number of SKUs is further increased. Based on the above, the invention designs a general disposable underpants and a production process thereof to solve the above problems. Disclosure of Invention The invention aims to provide a general disposable underpants and a production process thereof, so as to solve the technical problems. The invention provides a pair of general disposable underpants, which comprises a front piece and a back piece, wherein the front piece comprises a front waist part, a front telescopic part and a bottom rail, the back piece comprises a back waist part, a back telescopic part and buttocks, the front piece and the back piece are connected through the bottom rail, an inner lining is further arranged on the inner side of the bottom rail, waist side sealing parts are arranged on two sides of the back waist part, the front telescopic part and the back telescopic part, the front piece and the back piece are respectively composed of a first piece layer, a second piece layer opposite to one surface of the first piece layer and a plurality of slender elastic telescopic structures, the elastic telescopic structures are arranged between the first piece layer and the second piece layer in a telescopic direction and are separated from each other at intervals, a plurality of piece combining parts are arranged on the first piece layer and the second piece layer, a plurality of adhesive blocks are arranged between the plurality of piece combining parts and the elastic telescopic structures, and the plurality of adhesive blocks are arranged in a stripe-shaped pattern continuously in the length direction of the elastic telescopic structures and in the direction crossing directions of the elastic telescopic structures. Through adopting above-mentioned technical scheme, through setting up first lamina, second lamina and press from both sides many elasticity extending structure of locating therebetween to adopt the bonding piece of specific pattern to join, make the pants main part possess all-round, even elasticity, this kind of structure can form regular, pleasing to the eye fold when contracting, has greatly promoted laminating degree and vision feel. Preferably, the distance between adjacent elastic telescopic structures is 0.4 mm-4 mm. By adopting the technical scheme, the high-density arrangement combined with the fine denier fibers is a key for realizing uniform low pressure and high elastic comfort. Preferably, the stretching ratio of the front waist part and the rear waist part in the length direction is 250% -350%, the stretching ratio of the front telescopic part and the rear telescopic part in the length direction is 150% -250%, and the stretching ratio of the buttocks and the bottom rail in the length direction is 130% -150%. By adopting the technical scheme, differential pressure mapping is realized by precisely controlling the thickness, the spacing and the prestretching rate of the spandex elastic filaments in different body areas (waist, buttocks and legs). Preferably, the elastic telescopic structure is spandex elastic yarn with the thickness of 10-1000 dtex. By adopting the technical scheme, the application of the fine denier fiber (such as 10-340 dtex) can obviously reduce the pressure per unit area on the skin, and effectively lighten or eve