CN113893092A - Preparation method of wet color-changing sanitary article - Google Patents
Preparation method of wet color-changing sanitary article Download PDFInfo
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- CN113893092A CN113893092A CN202111208886.5A CN202111208886A CN113893092A CN 113893092 A CN113893092 A CN 113893092A CN 202111208886 A CN202111208886 A CN 202111208886A CN 113893092 A CN113893092 A CN 113893092A
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- preparing
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
- A61F2013/422—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm the alarm being a colour change
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The invention relates to the field of sanitary products, and provides a preparation method of a wet color-changing sanitary product, which solves the defects of insensitive and airtight color change of paper diapers in the prior art, and comprises the following preparation steps: (1) preparing a liquid-permeable surface layer; (2) preparing an absorber; (3) preparing a liquid-tight bottom layer; (4) and (3) compounding the liquid-permeable surface layer, the absorber and the liquid-impermeable bottom layer into a whole on line and slitting to obtain a single product.
Description
Technical Field
The invention relates to the field of hygienic products, in particular to a preparation method of a hygienic product capable of changing color when wet.
Background
In the current 'fast-paced' living environment, the paper diaper is an absolute baby nursing necessity, and 7-8 sheets are needed by a newborn baby almost every day. As the urine or the excrement of the newborn baby is frequent, the red hip is easy to appear after the paper diaper is covered for a long time, and the diaper needs to be changed frequently in time. How to judge whether the baby should change the diaper? In the early days, most parents feel the urine absorbed by the paper diaper by touching the hands, and sometimes the parents know that the diaper becomes heavy and swollen after the baby urinates for a long time. In order to enable parents of new hands to timely perceive and change the paper diapers for babies, some urine wetness reminding designs are in due course, the bottom layer material used at present of the baby paper diapers (including the pull-up pants) is a breathable and waterproof PE material bottom film, the baby paper diapers do not have the function of reminding after urine wetness, and the industry generally reminds the paper diapers of having urine wetness by printing color-changing ink patterns (the patterns are blue before wetting, the ink is dissolved and is faint after wetting, and the patterns are blurred) or scraping urine display glue (the strip urine display glue is yellow before wetting, the strip urine display glue is blue after wetting, but the strip shape of the urine display glue is unchanged), so that the paper diapers need to be changed. However, whether the color-changing ink is printed or the urine-developing adhesive is applied by scratching, the color-changing ink is generally distributed on one side of the PE film close to the absorbent body in a strip-shaped manner, and because the strip-shaped design area is small, whether the baby has urine or not cannot be clearly and intuitively found, and whether the baby needs to be replaced or not can be judged by touching the baby usually.
Chinese patent application No. 201811451254.X discloses a composite film which changes color according to a pH change and a diaper containing the same, including: a liquid impermeable breathable film layer; and a color-changing layer formed on one side of the liquid-impermeable breathable film layer by using a water-based ink composition which changes color according to the change of pH, wherein the water-based ink composition comprises a water-soluble resin, a rosin compound, a pH indicator, an organic acid, a solvent, a silane compound and an adhesive, and a caretaker can immediately judge whether the user has excrement or urine from the outside by naked eyes by arranging the color-changing layer, but the color-changing layer is combined with the liquid-impermeable basement membrane in a gravure printing mode, so that the air permeability of the liquid-impermeable basement membrane is influenced, the hand feeling is hard, and the air permeability is also reduced.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides a preparation method of a hygienic product changing color when encountering moisture, and solves the defects of insensitive and airtight color change when encountering moisture of the paper diaper in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a hygienic product changing color when encountering moisture comprises the following preparation steps:
(1) preparing a liquid-permeable surface layer;
(2) preparing an absorber;
(3) preparation of the liquid-impermeable back sheet: a. preparing a color-changing PE film; b. compounding the color-changing PE film prepared in the step a and non-woven fabric on line to obtain a liquid-tight bottom layer; the preparation steps of the color-changing PE film are as follows:
uniformly mixing modified polyethylene master batches, a filler, a main resin, a tackifying resin, a surfactant and a pH indicator, and feeding the mixture into a screw extruder for melting and extruding;
casting, stretching, cooling and shaping to obtain a semi-finished film;
thirdly, heat treatment: drying the semi-finished film by a hot air roller, wherein the temperature of the hot air roller is controlled at 120-130 ℃;
fourthly, drafting: stretching at the speed of 150 plus 180mm/min and the stretching multiplying power of 1.2-1.3, and cooling and shaping at normal temperature to obtain the color-changing PE film;
(4) and (3) compounding the liquid-permeable surface layer, the absorber and the liquid-impermeable bottom layer into a whole on line and slitting to obtain a single product.
The further improvement is that: the modified polyethylene master batch is biodegradable master batch.
The further improvement is that: the biodegradable master batch takes chitosan as a modifier.
The further improvement is that: the dosage ratio of the modified polyethylene master batch, the filler, the main resin, the tackifying resin, the surfactant and the pH indicator is 100: 10-40: 20-30: 2-8: 1-3: 0.3-0.5.
the further improvement is that: the main body resin is SBC and SIS, and the ratio of SBC to SIS is 3: 2 by weight ratio.
The further improvement is that: the tackifying resin is rosin resin, petroleum resin and a mixture of 3: 1 by weight ratio.
The further improvement is that: the surfactant is polyethylene glycol or polyether.
The further improvement is that: the pH indicator is any one of bromophenol blue, bromocresol green, tetrabromophenol sulfonyl phthalein and tetrabromo-m-cresol sulfonyl phthalein.
The further improvement is that: the filler is calcium carbonate.
The further improvement is that: the temperature of the extrusion section of the screw extruder is controlled at 130-220 ℃.
By adopting the technical scheme, the invention has the beneficial effects that: 1. according to the invention, the color-changeable material and the polyethylene master batch are mixed, melted and cast into a film, and the film is arranged on one side close to the absorber, so that the color can be changed after wetting with urine.
2. The color-changing PE film prepared by the specific preparation method has good ventilation effect; by adding the filler into the film, controlling the stretching ratio and carrying out heat treatment and redrawing treatment, the obtained PE film has better air permeability compared with the traditional PE film.
3. The polyethylene master batch is modified, so that the polyethylene master batch is easy to degrade and is environment-friendly.
4. The modified polyethylene master batch takes chitosan as an improver, and the chitosan has wide raw material source and lower cost.
5. The components used by the color-changing PE film do not contain heavy metals, and are environment-friendly and nontoxic.
Detailed Description
Example one
A preparation method of a wet color-changing paper diaper comprises the following preparation steps:
(1) preparing a liquid-permeable surface layer;
(2) preparing an absorber;
(3) preparation of the liquid-impermeable back sheet: a. preparing a color-changing PE film: the biodegradable master batch, calcium carbonate, main resin, tackifying resin, polyethylene glycol or polyether and bromophenol blue are calculated by weight parts of 100: 10: 20: 2: 1: 0.3, mixing uniformly, feeding into a screw extruder for melting and extruding; the host resin is SBC and SIS in a ratio of 3: 2, and the tackifying resin is rosin resin and petroleum resin and the weight ratio of 3: 1 by weight ratio; the temperatures of the extrusion sections of the screw extruder are as follows in sequence: the temperature is increased in a gradient way at 130 ℃, 150 ℃, 180 ℃, 195 ℃ and 220 ℃;
casting, stretching, cooling and shaping to obtain a semi-finished film, wherein the specific operation mode is as follows: after extrusion, the extruded film is conveyed to a stretching roller through a casting roller, the temperature of the casting roller is controlled at 225 ℃, the stretching roller comprises a first stretching roller group and a second stretching roller group, the stretching speed of the second stretching roller group is greater than the speed of the first stretching roller group, the specific speed of the second stretching roller group is 1.3 times that of the first stretching roller group, the casting film is stretched through the stretching speed difference of the two groups of roller groups, and fine holes are formed in the film;
thirdly, heat treatment: drying the semi-finished film by a hot air roller, wherein the temperature of the hot air roller is controlled at 120 ℃;
fourthly, drafting: stretching at a speed of 150mm/min and a stretching ratio of 1.2, and cooling and shaping at normal temperature to obtain the color-changing PE film;
b. compounding the color-changing PE film prepared in the step a and non-woven fabric on line to obtain a liquid-tight bottom layer;
(4) and (3) compounding the liquid-permeable surface layer, the absorber and the liquid-impermeable bottom layer into a whole on line and slitting to obtain a single product.
In the step (3), the biodegradable masterbatch takes chitosan as the sex agent, and the specific modification method refers to Chinese patent No. 201510774398.9.
When the paper diaper manufactured by the embodiment is not used, the liquid-tight basement membrane is yellow, becomes blue after urine is wetted, has bright color, and can visually discover whether the baby urinates.
Example two
A preparation method of a wet color-changing paper diaper comprises the following preparation steps:
(1) preparing a liquid-permeable surface layer;
(2) preparing an absorber;
(3) preparation of the liquid-impermeable back sheet: a. preparing a color-changing PE film: the biodegradable master batch, calcium carbonate, main resin, tackifying resin, polyethylene glycol or polyether and tetrabromophenol sulfonyl phthalide are calculated by weight parts of 100: 20: 25: 5: 2: 0.4, mixing uniformly, feeding into a screw extruder for melting and extruding; the host resin is SBC and SIS in a ratio of 3: 2, and the tackifying resin is rosin resin and petroleum resin and the weight ratio of 3: 1 by weight ratio; the temperatures of the extrusion sections of the screw extruder are as follows in sequence: the temperature is increased in a gradient way at 130 ℃, 150 ℃, 180 ℃, 195 ℃ and 220 ℃;
casting, stretching, cooling and shaping to obtain a semi-finished film, wherein the specific operation mode is as follows: after extrusion, the extruded film is conveyed to a stretching roller through a casting roller, the temperature of the casting roller is controlled at 225 ℃, the stretching roller comprises a first stretching roller group and a second stretching roller group, the stretching speed of the second stretching roller group is greater than the speed of the first stretching roller group, the specific speed of the second stretching roller group is 1.3 times that of the first stretching roller group, the casting film is stretched through the stretching speed difference of the two groups of roller groups, and fine holes are formed in the film;
thirdly, heat treatment: drying the semi-finished film by a hot air roller, wherein the temperature of the hot air roller is controlled at 120 ℃;
fourthly, drafting: stretching at a speed of 160mm/min and a stretching ratio of 1.2, and cooling and shaping at normal temperature to obtain the color-changing PE film;
b. compounding the color-changing PE film prepared in the step a and non-woven fabric on line to obtain a liquid-tight bottom layer;
(4) and (3) compounding the liquid-permeable surface layer, the absorber and the liquid-impermeable bottom layer into a whole on line and slitting to obtain a single product.
The diaper of this embodiment is such that the liquid-impermeable back sheet shows yellow when not in use, blue when wet, and purple when much urine, and the baby can be judged whether or not it has urinated and whether or not the amount of urination is large by observing the change in color.
Comparative example 1
Referring to the first embodiment, the liquid-impermeable bottom layer in the step (3) is prepared by adopting the traditional blow molding of PE master batches to form a film, and then compounding a layer of non-woven fabric on the bottom surface of the film on line, namely obtaining the liquid-impermeable bottom layer, wherein other preparation processes are the same as those of the first embodiment.
The detection results of the products prepared in the examples and the comparative examples are shown in the following table.
Air permeability values were determined according to ASTM D726.
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 detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A preparation method of a hygienic product changing color when encountering moisture is characterized by comprising the following steps: the preparation method comprises the following preparation steps:
(1) preparing a liquid-permeable surface layer;
(2) preparing an absorber;
(3) preparation of the liquid-impermeable back sheet: a. preparing a color-changing PE film; b. compounding the color-changing PE film prepared in the step a and non-woven fabric on line to obtain a liquid-tight bottom layer; the preparation steps of the color-changing PE film are as follows:
uniformly mixing modified polyethylene master batches, a filler, a main resin, a tackifying resin, a surfactant and a pH indicator, and feeding the mixture into a screw extruder for melting and extruding;
casting, stretching, cooling and shaping to obtain a semi-finished film;
thirdly, heat treatment: drying the semi-finished film by a hot air roller, wherein the temperature of the hot air roller is controlled at 120-130 ℃;
fourthly, drafting: stretching at the speed of 150 plus 180mm/min and the stretching multiplying power of 1.2-1.3, and cooling and shaping at normal temperature to obtain the color-changing PE film;
(4) and (3) compounding the liquid-permeable surface layer, the absorber and the liquid-impermeable bottom layer into a whole on line and slitting to obtain a single product.
2. The method for preparing a hygienic product changing color when encountering moisture according to claim 1, wherein the method comprises the following steps: the modified polyethylene master batch is biodegradable master batch.
3. The method for preparing a hygienic product changing color when encountering moisture as claimed in claim 2, wherein: the biodegradable master batch takes chitosan as a modifier.
4. The method for preparing a hygienic product changing color when encountering moisture according to claim 1, wherein the method comprises the following steps: the dosage ratio of the modified polyethylene master batch, the filler, the main resin, the tackifying resin, the surfactant and the pH indicator is 100: 10-40: 20-30: 2-8: 1-3: 0.3-0.5.
5. the method for preparing a hygienic product changing color when encountering moisture as claimed in claim 4, wherein: the main body resin is SBC and SIS, and the ratio of SBC to SIS is 3: 2 by weight ratio.
6. The method for preparing a hygienic product changing color when encountering moisture as claimed in claim 4, wherein: the tackifying resin is rosin resin, petroleum resin and a mixture of 3: 1 by weight ratio.
7. The method for preparing a hygienic product changing color when encountering moisture as claimed in claim 4, wherein: the surfactant is polyethylene glycol or polyether.
8. The method for preparing a hygienic product changing color when encountering moisture as claimed in claim 4, wherein: the pH indicator is any one of bromophenol blue, bromocresol green, tetrabromophenol sulfonyl phthalein and tetrabromo-m-cresol sulfonyl phthalein.
9. The method for preparing a hygienic product changing color when encountering moisture as claimed in claim 4, wherein: the filler is calcium carbonate.
10. The method for preparing a hygienic product changing color when encountering moisture according to claim 1, wherein the method comprises the following steps: the temperature of the extrusion section of the screw extruder is controlled at 130-220 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208886.5A CN113893092A (en) | 2021-10-18 | 2021-10-18 | Preparation method of wet color-changing sanitary article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208886.5A CN113893092A (en) | 2021-10-18 | 2021-10-18 | Preparation method of wet color-changing sanitary article |
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| Publication Number | Publication Date |
|---|---|
| CN113893092A true CN113893092A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111208886.5A Pending CN113893092A (en) | 2021-10-18 | 2021-10-18 | Preparation method of wet color-changing sanitary article |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948447A (en) * | 2022-05-24 | 2022-08-30 | 余兆龙 | Disposable aseptic paper urine pad for baby |
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| CN110079001A (en) * | 2019-05-27 | 2019-08-02 | 佛山华韩卫生材料有限公司 | A kind of very thin high ventilative zero leakage counterdie of pro-skin |
| CN110680615A (en) * | 2019-10-29 | 2020-01-14 | 广东茵茵股份有限公司 | Production method of paper diaper with buffer area |
| CN110774698A (en) * | 2019-10-13 | 2020-02-11 | 福建恒安集团有限公司 | Elastic microporous breathable film |
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2021
- 2021-10-18 CN CN202111208886.5A patent/CN113893092A/en active Pending
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| US4895567A (en) * | 1986-03-17 | 1990-01-23 | The International Group, Inc. | Wetness indicating hot-melt adhesives |
| CN101553199A (en) * | 2006-12-08 | 2009-10-07 | Sca卫生用品公司 | An absorbent article containing a breathable material layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948447A (en) * | 2022-05-24 | 2022-08-30 | 余兆龙 | Disposable aseptic paper urine pad for baby |
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