CN120458834B - Preparation method of bubble-shaped waist diaper - Google Patents
Preparation method of bubble-shaped waist diaperInfo
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Abstract
The invention relates to the field of sanitary products, and provides a preparation method of a bubble-type waistline paper diaper, which solves the problems of poor fitting property and comfort degree caused by lack of elastic partition of the waistline of the traditional paper diaper and the problem of stuffy red buttocks caused by unreasonable waistline ventilation structure; the manufacturing method comprises the steps of (1) forming an elastic waistline, namely fixing a first elastic material and a second elastic material between an inner bottom layer non-woven fabric and an outer bottom layer non-woven fabric to form an elastic composite layer, (2) preparing an omega-shaped reverse folding structure, namely transversely stretching the elastic composite layer to 150% -180% of the original length, pressing the elastic composite layer in a stretched state, releasing a fixture clamp to retract the elastic composite layer to form the omega-shaped reverse folding structure, forming a bubble fluffy part, (3) conducting ventilation treatment, and (4) conducting composite assembly, namely compositing the elastic waistline treated in the step (3) with a paper diaper body to obtain the bubble waistline paper diaper.
Description
Technical Field
The invention relates to the field of sanitary products, in particular to a preparation method of a bubble-type waistline paper diaper.
Background
The paper diaper is used as an indispensable article in daily care of infants, and the performance of the paper diaper is directly related to the health and comfort of the infants. In the development history of paper diapers, the design and performance of waistline portions have been the key research and improvement directions. The elastic distribution of the waistline of the traditional paper diaper often lacks a targeted design. Most waistlines adopt a single elastic material or even elastic distribution mode, and the different requirements of different parts of the baby body on elasticity cannot be met. The skin of the baby is delicate, the diaper is worn for a long time, and the ventilation property of the waistline part is important. The ventilation structure design of the waistline of the traditional paper diaper is often imperfect.
Chinese patent publication No. CN217593237U discloses a comfortable bubble trousers, and the design of the extension waist of its bubble trousers is turned over through the inlayer non-woven fabrics and is formed bubble form fluffy portion, aims at promoting waistline compliance and gas permeability through three-dimensional structure, realizes elasticity differentiation through the elasticity rubber band distribution density of adjustment extension waist and waist layer. However, the bubble morphology control of this application is insufficient in structural stability, and the elastic partitioning fineness and dynamic adaptability are relatively weak.
Chinese patent publication No. CN219207731U discloses a pull-up pants with bubble-shaped comfortable ventilation waistline, which forms bubble waistline through an inner/outer fold structure, and realizes ventilation through communicating the ventilation holes of the fold portion with the white space, but the application also has a disadvantage in structural stability in controlling the form of bubble waistline.
Disclosure of Invention
Therefore, the invention provides a preparation method of a bubble-type waistline diaper, aiming at the problems that the conventional diaper is poor in fitting property and comfort degree due to lack of elastic partition of waistline and the waistline ventilation structure is unreasonable to cause stuffy red buttocks.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a preparation method of a bubble-type waistline paper diaper comprises the following steps:
S1, forming an elastic waistline, namely fixing a first elastic material and a second elastic material between an inner bottom layer non-woven fabric and an outer bottom layer non-woven fabric to form an elastic composite layer, wherein the elastic composite layer comprises a first elastic region and a second elastic region, the first elastic region is positioned in a side waist region, the second elastic region is positioned in a front waist region and a rear waist region, and the elastic modulus of the first elastic region is 20% -50% higher than that of the second elastic region;
S2, preparing an omega-shaped reverse folding structure, namely transversely stretching the elastic composite layer to 150-180% of the original length, fixing the elastic composite layer on a high-temperature-resistant fixture, pressing the elastic composite layer in a stretched state by adopting a double-temperature-zone hot-pressing roller set, arranging a micro-convex array on the surface of an upper roller, arranging a shallow concave array on the surface of a lower roller, circularly cooling and shaping the elastic composite layer through cold air at-10 ℃ after pressing, and releasing the fixture to retract the elastic composite layer, wherein the elastic composite layer is driven by resilience force to form the omega-shaped reverse folding structure to form a bubble fluffy part;
S3, air permeability treatment, namely punching the elastic waistline, wherein the punching aperture is 0.1mm-1mm, the hole density is 50 holes/cm 2 -200 holes/cm 2, and the hole density of the side waist region is 10% -30% higher than that of the second elastic region;
s4, compounding and assembling, namely compounding the elastic waistline processed in the step S3 with the diaper body, wherein two ends of the elastic waistline are coated on the inner side and the outer side of the diaper body through hot pressing or ultrasonic waves, so as to obtain the bubble-type waistline diaper.
Further, the outer bottom non-woven fabric is an air-permeable PE film or a hot air non-woven fabric, the gram weight is 15g/m 2-25g/m2, the inner bottom non-woven fabric is a hydrophilic spun-bonded non-woven fabric, and the gram weight is 10g/m 2-20g/m2.
Further, the first elastic material is spandex yarn, the stretching multiplying power is 3.0-4.5 times, the second elastic material is elastic film or elastic non-woven fabric, and the stretching multiplying power is 2.0-3.0 times.
Further, the second elastic region of the elastic waistline is also provided with auxiliary elastic rubber strings which are transversely arranged, the stretching multiplying power of the auxiliary elastic rubber strings is 1.5-2.0 times, and the auxiliary elastic rubber strings are arranged at intervals of 5-10 mm.
Further, the fold density of the omega-shaped reverse fold structure in the side waist region is 30% -50% higher than that of the second elastic region.
Further, the thickness of the air cavity naturally formed between the non-woven fabrics of the inner bottom layer and the non-woven fabrics of the outer bottom layer is 0.5mm-1.5mm.
Further, the bonding mode of the hot-pressing or ultrasonic welding points is discontinuous distribution, and the bonding areas correspond to the positions of the first elastic material and the auxiliary elastic rubber band so as to avoid delamination of the pleat waves during dynamic stretching.
The intermittent distribution bonding mode can ensure the connection firmness of the waistline and the paper diaper body, avoid the delamination of the fold waves during dynamic stretching, ensure that the waistline always maintains good elasticity and structural integrity during the movement of babies, and improve the reliability and the service life of the paper diaper.
Further, the elastic resilience of the waist is controlled to be 460gf-520gf.
Further, the temperature of the upper roller is 120-140 ℃, and the temperature of the lower roller is 90-110 ℃.
Further, in the step S2, the pressing pressure is 0.5MPa-1.2MPa, and the contact time is 2S-4S.
In the design of the waist of the diaper, gf represents the resilience of the elastic material, i.e. the force generated when the waist is stretched and returns to its original shape, which directly affects the fit and comfort of the waist.
By adopting the technical scheme, the invention has the beneficial effects that:
1. By arranging the first elastic region and the second elastic region with different elastic moduli, the side waist region (the first elastic region) can provide stronger elastic support, better fit with the body curve of a baby, prevent side leakage, and the front waist region and the rear waist region (the second elastic region) have moderate elasticity, so that the wearing comfort is improved, and the situation that the baby is bound by over-tightening is avoided.
2. The elastic composite layer is formed into an omega-shaped reverse folding structure by adopting the processes of stretching, hot pressing, cooling shaping and retracting, so that a bubble fluffy part is formed, more accurate bubble form control is realized, the structure stability has remarkable advantages, the fluffiness and softness of waistline are increased, the contact area with the skin of a baby is reduced, the friction is reduced, the comfort is improved, a certain amount of air can be stored in the bubble structure, the circulation of the air is favorable for reducing the stuffiness and enhancing the air permeability.
3. The elastic waistline is perforated, so that the ventilation property of the waistline is effectively improved, the skin of a baby can breathe freely, and the skin problems such as stuffy feeling and red buttock are reduced.
4. The auxiliary elastic rubber band further enhances the elasticity of the second elastic region, so that the auxiliary elastic rubber band can better adapt to the movement of the waist of a baby, provides more uniform elastic support, prevents the waistline from loosening or shifting, and improves the leakage-proof effect.
Drawings
Fig. 1 is a schematic structural view of a diaper according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of an elastic composite layer of a second elastic region in embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of an elastic composite layer of a first elastic region in embodiment 1 of the present invention;
Fig. 4 is a schematic structural diagram of an Ω -shaped reverse fold structure in embodiment 1 of the present invention;
the reference numerals in the figure indicate 1 a first elastic material, 2-a second elastic material, 3-an inner bottom layer non-woven fabric, 4-an outer bottom layer non-woven fabric, 11-a first elastic region, 12-a second elastic region, 5-auxiliary elastic rubber band and 6-omega-shaped reverse folding structure.
Detailed Description
Example 1
Referring to fig. 1 to 4, a method for manufacturing a bubble-type waist diaper includes the steps of:
(1) Elastic waistline shaping
The first elastic material 1 and the second elastic material 2 are fixed between the inner bottom layer non-woven fabric 3 and the outer bottom layer non-woven fabric 4 to form an elastic composite layer, wherein the elastic composite layer comprises a first elastic region 11 and a second elastic region 12, the first elastic region 11 is positioned in a lateral waist region, the second elastic region 12 is positioned in a front waist region and a rear waist region, and the elastic modulus of the first elastic region 11 is 20% higher than that of the second elastic region 12;
The outer bottom layer non-woven fabric 4 is a breathable PE film, the gram weight is 15g/m 2, the inner bottom layer non-woven fabric 3 is a hydrophilic spun-bonded non-woven fabric, and the gram weight is 10g/m 2;
The first elastic material 1 is spandex yarn, the stretching multiplying power is 3.0 times, the second elastic material 2 is an elastic film, and the stretching multiplying power is 2.0 times;
the second elastic region 12 of the elastic waistline is also provided with auxiliary elastic rubber bands 5 which are transversely arranged, the stretching multiplying power of the auxiliary elastic rubber bands 5 is 1.5 times, and the auxiliary elastic rubber bands are arranged at intervals of 5mm;
the elastic resilience of the waistline is controlled at 460gf;
(2) Preparation of omega-shaped reverse folding structure
Stretching the elastic composite layer to 150% of the original length along the transverse direction, fixing the elastic composite layer on a high-temperature-resistant fixture, pressing the elastic composite layer in a stretched state by adopting a double-temperature-zone hot-press roller set, arranging a micro-convex array on the surface of an upper roller, arranging a shallow concave array on the surface of a lower roller, circularly cooling and shaping the elastic composite layer by cold air at-10 ℃ after pressing, releasing the fixture to retract the elastic composite layer, and driving the elastic composite layer by resilience force to form an omega-shaped reverse folding structure 6 to form a bubble fluffy part;
Wherein the pressing pressure is 0.5MPa, the contact time is 2s, the upper roller temperature is 120 ℃, and the lower roller temperature is 90 ℃;
the fold density of the omega-shaped reverse fold structure 6 in the first elastic region is 30% higher than that in the second elastic region;
The thickness H of an air cavity naturally formed between the non-woven fabric 3 of the inner bottom layer and the non-woven fabric 4 of the outer bottom layer is 0.5mm;
(3) Breathable treatment
Punching the elastic waistline, wherein the punching aperture is 1mm, and the hole density of the first elastic region is 10% higher than that of the second elastic region;
(4) Composite assembly
Compounding the elastic waistline treated in the step (3) with a diaper body, wherein two ends of the elastic waistline are coated on the inner side and the outer side of the diaper body in an ultrasonic welding mode to obtain a bubble-type waistline diaper;
The bonding mode of the ultrasonic welding points is discontinuously distributed, and the bonding areas correspond to the positions of the first elastic material and the auxiliary elastic rubber band so as to avoid delamination of the pleat waves during dynamic stretching.
Example 2
A preparation method of a bubble-type waistline paper diaper comprises the following steps:
(1) Elastic waistline shaping
The method comprises the steps that a first elastic material and a second elastic material are fixed between an inner bottom layer non-woven fabric and an outer bottom layer non-woven fabric to form an elastic composite layer, the elastic composite layer comprises a first elastic region and a second elastic region, the first elastic region is located in a side waist region, the second elastic region is located in a front waist region and a rear waist region, and the elastic modulus of the first elastic region is 30% higher than that of the second elastic region;
The outer bottom layer non-woven fabric is hot air non-woven fabric with the gram weight of 20g/m 2, the inner bottom layer non-woven fabric is hydrophilic spun-bonded non-woven fabric with the gram weight of 15g/m 2;
The first elastic material is spandex yarn, the stretching multiplying power is 3.5 times, the second elastic material is elastic non-woven fabric, and the stretching multiplying power is 2.5 times;
The second elastic region of the elastic waistline is also provided with auxiliary elastic rubber strings which are transversely arranged, the stretching multiplying power of the auxiliary elastic rubber strings is 2.0 times, and the auxiliary elastic rubber strings are arranged at intervals of 8mm;
the elastic resilience of the waistline is controlled at 490gf;
(2) Preparation of omega-shaped reverse folding structure
Stretching the elastic composite layer to 160% of the original length along the transverse direction, fixing the elastic composite layer on a high-temperature-resistant fixture, pressing the elastic composite layer in a stretched state by adopting a double-temperature-zone hot-press roller set, arranging a micro-convex array on the surface of an upper roller, arranging a shallow concave array on the surface of a lower roller, circularly cooling and shaping the elastic composite layer by cold air at-10 ℃ after pressing, releasing the fixture to retract the elastic composite layer, and driving the elastic composite layer by resilience force to form an omega-shaped reverse folding structure to form a bubble fluffy part;
Wherein the pressing pressure is 1.0MPa, the contact time is 2s, the upper roller temperature is 130 ℃, and the lower roller temperature is 100 ℃;
The fold density of the omega-shaped reverse fold structure in the first elastic region is 40% higher than that of the second elastic region;
The thickness of an air cavity naturally formed between the non-woven fabrics of the inner bottom layer and the non-woven fabrics of the outer bottom layer is 1.0mm;
(3) Breathable treatment
Punching the elastic waistline, wherein the punching aperture is 0.5mm, and the hole density of the side waist region is 20% higher than that of the second elastic region;
(4) Composite assembly
Compounding the elastic waistline treated in the step (3) with a diaper body, wherein two ends of the elastic waistline are coated on the inner side and the outer side of the diaper body through hot-press welding, so as to obtain a bubble-type waistline diaper;
The bonding mode of the hot-pressing welding points is discontinuously distributed, and the bonding areas correspond to the positions of the first elastic material and the auxiliary elastic rubber band so as to avoid delamination of the pleat waves during dynamic stretching.
Example 3
A preparation method of a bubble-type waistline paper diaper comprises the following steps:
(1) Elastic waistline shaping
The method comprises the steps that a first elastic material and a second elastic material are fixed between an inner bottom layer non-woven fabric and an outer bottom layer non-woven fabric to form an elastic composite layer, the elastic composite layer comprises a first elastic region and a second elastic region, the first elastic region is located in a side waist region, the second elastic region is located in a front waist region and a rear waist region, and the elastic modulus of the first elastic region is 50% higher than that of the second elastic region;
The outer bottom layer non-woven fabric is a breathable PE film, the gram weight is 25g/m 2, the inner bottom layer non-woven fabric is a hydrophilic spun-bonded non-woven fabric, and the gram weight is 20g/m 2;
The first elastic material is spandex yarn, the stretching multiplying power is 4.5 times, the second elastic material is elastic film, and the stretching multiplying power is 3.0 times;
the second elastic region of the elastic waistline is also provided with auxiliary elastic rubber strings which are transversely arranged, the stretching multiplying power of the auxiliary elastic rubber strings is 2.0 times, and the auxiliary elastic rubber strings are arranged at intervals of 10 mm;
The elastic resilience of the waistline is controlled at 520gf;
(2) Preparation of omega-shaped reverse folding structure
Stretching the elastic composite layer to 180% of the original length along the transverse direction, fixing the elastic composite layer on a high-temperature-resistant fixture, pressing the elastic composite layer in a stretched state by adopting a double-temperature-zone hot-press roller set, arranging a micro-convex array on the surface of an upper roller, arranging a shallow concave array on the surface of a lower roller, circularly cooling and shaping the elastic composite layer by cold air at-10 ℃ after pressing, releasing the fixture to retract the elastic composite layer, and driving the elastic composite layer by resilience force to form an omega-shaped reverse folding structure to form a bubble fluffy part;
Wherein the pressing pressure is 1.2MPa, the contact time is 2s, the upper roller temperature is 140 ℃, and the lower roller temperature is 110 ℃;
the fold density of the omega-shaped reverse fold structure in the first elastic region is 50% higher than that of the second elastic region;
The thickness of an air cavity naturally formed between the non-woven fabrics of the inner bottom layer and the non-woven fabrics of the outer bottom layer is 1.5mm;
(3) Breathable treatment
Punching the elastic waistline, wherein the punching aperture is 1mm, and the hole density of the side waist region is 30% higher than that of the second elastic region;
(4) Composite assembly
Compounding the elastic waistline treated in the step (3) with a diaper body, wherein two ends of the elastic waistline are coated on the inner side and the outer side of the diaper body through ultrasonic welding to obtain a bubble-type waistline diaper;
The bonding mode of the ultrasonic welding points is discontinuously distributed, and the bonding areas correspond to the positions of the first elastic material and the auxiliary elastic rubber band so as to avoid delamination of the pleat waves during dynamic stretching.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The preparation method of the bubble-type waistline paper diaper is characterized by comprising the following steps of:
S1, forming an elastic waistline, namely fixing a first elastic material and a second elastic material between an inner bottom layer non-woven fabric and an outer bottom layer non-woven fabric to form an elastic composite layer, wherein the elastic composite layer comprises a first elastic region and a second elastic region, the first elastic region is positioned in a side waist region, the second elastic region is positioned in a front waist region and a rear waist region, and the elastic modulus of the first elastic region is 20% -50% higher than that of the second elastic region;
S2, preparing an omega-shaped reverse folding structure, namely transversely stretching the elastic composite layer to 150-180% of the original length, fixing the elastic composite layer on a high-temperature-resistant fixture, pressing the elastic composite layer in a stretched state by adopting a double-temperature-zone hot-pressing roller set, arranging a micro-convex array on the surface of an upper roller, arranging a shallow concave array on the surface of a lower roller, circularly cooling and shaping the elastic composite layer through cold air at-10 ℃ after pressing, and releasing the fixture to retract the elastic composite layer, wherein the elastic composite layer is driven by resilience force to form the omega-shaped reverse folding structure to form a bubble fluffy part;
S3, air permeability treatment, namely punching the elastic waistline, wherein the punching aperture is 0.1mm-1mm, the hole density is 50 holes/cm 2 -200 holes/cm 2, and the hole density of the side waist region is 10% -30% higher than that of the second elastic region;
S4, compounding the elastic waistline processed in the step S3 with the diaper body, and coating the two ends of the elastic waistline on the inner side and the outer side of the diaper body through hot pressing or ultrasonic waves to obtain the bubble-type waistline diaper;
In the step S2, the temperature of the upper roller is 120-140 ℃, the temperature of the lower roller is 90-110 ℃, the pressure of the pressing is 0.5-1.2 MPa, and the contact time is 2S-4S.
2. The preparation method of the bubble-type waistline paper diaper according to claim 1 is characterized in that the outer bottom layer non-woven fabric is an air-permeable PE film or a hot air non-woven fabric, the gram weight is 15g/m 2-25g/m2, the inner bottom layer non-woven fabric is a hydrophilic spun-bonded non-woven fabric, and the gram weight is 10g/m 2-20g/m2.
3. The method for manufacturing the bubble-type waistline diaper according to claim 1, wherein the first elastic material is spandex yarn, the stretching multiplying power is 3.0-4.5 times, the second elastic material is elastic film or elastic non-woven fabric, and the stretching multiplying power is 2.0-3.0 times.
4. The method for preparing a bubble-type waistline diaper according to claim 1, wherein the second elastic region of the elastic waistline is further provided with auxiliary elastic rubber strings which are transversely arranged, the stretching ratio of the auxiliary elastic rubber strings is 1.5 times to 2.0 times, and the auxiliary elastic rubber strings are arranged at intervals of 5mm to 10 mm.
5. The method for producing a pants-type waist diaper according to claim 1, wherein the fold density of the omega-shaped reverse fold structure in the side waist region is 30% to 50% higher than that in the second elastic region.
6. The method for producing a pants-type waist diaper according to claim 1, wherein the thickness of the air cavity formed naturally between the inner bottom layer nonwoven fabric and the outer bottom layer nonwoven fabric is 0.5mm-1.5mm.
7. The method of claim 1 wherein the bonding means of the heat-pressed or ultrasonic welding points is intermittent, and the bonding areas correspond to the positions of the first elastic material and the auxiliary elastic rubber band to avoid delamination of the creased waves during dynamic stretching.
8. The method of manufacturing a pants-type waist diaper according to claim 1, wherein the elastic resilience of the pants is controlled to be 460gf-520gf.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1572267A (en) * | 2003-05-27 | 2005-02-02 | 尤妮佳股份有限公司 | Disposable diaper |
| CN222018549U (en) * | 2023-10-31 | 2024-11-19 | 湖州因爱伟大卫生用品有限公司 | Pleated pants-type paper diaper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7059485B2 (en) * | 2018-02-22 | 2022-04-26 | 日本製紙クレシア株式会社 | Pants type absorbent article |
| CN219127087U (en) * | 2022-11-21 | 2023-06-06 | 广州市汉氏卫生用品有限公司 | Paper diaper with fluffy waistline structure |
| CN220385295U (en) * | 2023-05-05 | 2024-01-26 | 广东邦宝个人护理用品有限公司 | Paper diaper with elastic waistline |
| CN220695450U (en) * | 2023-07-07 | 2024-04-02 | 贵州卡布婴童用品有限责任公司 | Elastic pull-up pants with bubble waistline |
| CN221130197U (en) * | 2023-07-21 | 2024-06-14 | 杭州千芝雅卫生用品有限公司 | Fine denier rubber string foam paper diaper |
| CN222075430U (en) * | 2024-01-09 | 2024-11-29 | 福建利澳纸业有限公司 | A new type of soft elastic bubble waist pull-up pants |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572267A (en) * | 2003-05-27 | 2005-02-02 | 尤妮佳股份有限公司 | Disposable diaper |
| CN222018549U (en) * | 2023-10-31 | 2024-11-19 | 湖州因爱伟大卫生用品有限公司 | Pleated pants-type paper diaper |
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