CN115648778A - Sanitary nursing basement membrane and preparation method thereof - Google Patents

Abstract

The invention provides a sanitary nursing basement membrane and a preparation method thereof, and relates to the field of sanitary products. The hygienic nursing basement membrane comprises a water-based octadecyl acrylate emulsion, non-woven fabrics, a breathable film and a waterproof film, wherein the hygienic nursing basement membrane is prepared from the following raw materials in parts by weight according to the following formula: 0.8-1 part of water-based octadecyl acrylate emulsion, 1-1.25 parts of non-woven fabric, 0.35-0.45 part of breathable film and 3-3.75 parts of waterproof film; the non-woven fabrics include but are not limited to PP non-woven fabrics and SMMS non-woven fabrics, preferably SMMS non-woven fabrics; the breathable films include, but are not limited to, TPU films and PE films, preferably PE films; the waterproof membrane is a PTFE membrane. Through the improvement of the sanitary nursing basement membrane, the sanitary towel can ensure that the menstrual blood does not overflow under the condition of facing more menstrual blood, and simultaneously ensure that the female private parts are ventilated and dry.

Description

A kind of hygienic care base film and preparation method thereof

technical field

The invention relates to the technical field of sanitary products, in particular to a hygienic care base film and a preparation method thereof.

Background technique

Due to physiological reasons, after the reproductive function of women matures, the endometrium will shed with the periodic changes of the ovary and accompanied by bleeding. Since the interval between the two is usually 20-36 days, it is called menstruation. The amount of bleeding during menstruation Generally, it is 20-60ml. Because menstrual blood is rich in nutrients, and menstrual blood is warm and humid, it is easy to cause infection in female private parts, causing inflammation, itching, odor, etc. Therefore, it is necessary to absorb menstrual blood through sanitary napkins to keep female private parts clean. Dry and keep women from getting hurt during menstruation.

The existing sanitary napkin is composed of a surface layer, an absorbent core, and a bottom film. Since the top of the bottom film is the absorbent core and the bottom is the clothes, it is necessary to block the menstrual blood in the absorbent core while ensuring ventilation. Usually, the bottom film of the sanitary napkin is made of water-repellent non-woven fabric. Composition, this kind of non-woven fabric has a certain waterproof performance, but the hydrostatic pressure is low, and leakage will still occur in the face of a large amount of menstrual blood.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the invention provides a hygienic care bottom film and a preparation method thereof, which solves the problem of low hydrostatic pressure of the existing hygienic care bottom film.

(2) Technical solutions

In order to achieve the above object, the present invention is achieved through the following technical solutions: a hygienic care base film, comprising weighing parts by weight of raw materials according to the following formula: 0.8-1 part of water-based stearyl acrylate emulsion, 1-1.25 parts of non-woven fabric parts, breathable membrane 0.35-0.45 parts, waterproof membrane 3-3.75 parts.

Preferably, the non-woven fabric includes but not limited to PP non-woven fabric and SMMS non-woven fabric, preferably SMMS non-woven fabric.

Preferably, the breathable film includes but not limited to TPU film and PE film, preferably PE film.

Preferably, the waterproof membrane adopts PTFE membrane.

A kind of hygienic care base film, comprises the following specific steps:

Step 1: Spray the water-based octadecyl acrylate emulsion evenly on the surface of the non-woven fabric through a spray gun, so that the weight of the non-woven fabric increases by 75-85%;

Step 2: Irradiate the non-woven fabric through the ultraviolet lamp tube, the power of the ultraviolet lamp is 480-520W, and the irradiation time is 3-5min.

Step 3: Put the irradiated non-woven fabric into an oven for baking, the oven temperature is 55-65°C, and the baking time is 12-13 hours;

Step 4: Cover the breathable film on the non-woven fabric, and then cover the non-woven fabric on the waterproof film, and use the ultrasonic welding machine to spot weld the three layers of materials together to obtain the hygiene care base film.

Preferably, the water-based octadecyl acrylate emulsion weighs raw materials in parts by weight according to the following formula: 19-23 parts of stearyl acrylate, 0.3-0.5 parts of ethylene glycol dimethacrylate, fatty alcohol polyoxyethylene ether, AEO-3, 9-11 parts, fatty alcohol polyoxyethylene ether, AEO-9, 4.5-5.5 parts, 1-5 parts of benzophenone, 100-120 parts of deionized water.

The preparation method of aqueous octadecyl acrylate emulsion comprises the following specific steps:

Step 1: Add a small amount of deionized water into reaction tank A and heat to 40-45°C;

Step 2: Add stearyl acrylate, fatty alcohol polyoxyethylene ether, AEO-3, AEO-9 into the reaction tank A, start the mixer in the reaction tank A to stir;

Step 3: Add benzophenone into the reaction tank A, and continue to stir until the benzophenone is completely melted, and the temperature is 40-45°C;

Step 4: Add ethylene glycol dimethacrylate to the reaction tank A to evenly disperse it in the emulsion;

Step 5: Add the remaining deionized water in the reaction tank B, and slowly add the pre-emulsion in the reaction tank A into the reaction tank B;

Step 6: After adding all the pre-emulsion liquid in the reaction tank A, start the mixer in the reaction tank B to stir, the temperature is 40-45°C, and the stirring time is 30-40min, and the water-based stearyl acrylate emulsion can be obtained

Preferably, the compounding ratio of the fatty alcohol polyoxyethylene ether, AEO-3, to the fatty alcohol polyoxyethylene ether, AEO-9 is 2:1.

(3) Beneficial effects

The invention provides a hygienic care base film and a preparation method thereof. Has the following beneficial effects:

1. The present invention sprays water-based stearyl acrylate emulsion on the surface of the non-woven fabric, and then bakes in an oven after being irradiated by an ultraviolet lamp to form a water-based stearyl acrylate coating on the surface of the non-woven fabric. The water pressure is greatly increased, so that the sanitary napkin will not leak in the face of a large amount of menstrual blood, and at the same time, the non-woven fabric still has a relatively soft texture, making the sanitary napkin more comfortable to wear.

2. In the present invention, the breathable film is covered on the non-woven fabric, and the waterproof film is fixedly connected under the non-woven fabric, so that the present invention can not only maintain air permeability, but also ensure waterproof, so that the menstrual blood in the absorbent core will not overflow and at the same time ensure Women's private parts are dry, and the base film does not contain glue through ultrasonic welding machine spot welding, which avoids allergies that may occur when women use it, and is beneficial to women's physiological health during menstruation.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one:

The embodiment of the present invention provides a kind of hygienic care base film, comprises weighing each raw material according to following formula: 0.8-1 part of water-based stearyl acrylate emulsion, 1-1.25 part of non-woven fabric, 0.35-0.45 part of breathable film, 3-3.75 parts of waterproof membrane.

Non-woven fabrics include but not limited to PP non-woven fabrics and SMMS non-woven fabrics, preferably SMMS non-woven fabrics; breathable films include but not limited to TPU films and PE films, preferably PE films; the waterproof film uses PTFE films.

The preparation method of the hygienic care bottom film, the hygienic care bottom film weighs each raw material by weight according to the following formula: 0.8 parts of water-based stearyl acrylate emulsion, 1 part of non-woven fabric, 0.35 parts of breathable film, and 3 parts of waterproof film;

The specific production steps are as follows:

Step 1: Spray the water-based octadecyl acrylate emulsion evenly on the surface of the non-woven fabric through a spray gun, so that the weight of the non-woven fabric increases by 75-85%;

Step 2: Irradiate the non-woven fabric through the ultraviolet lamp tube, the power of the ultraviolet lamp is 480-520W, and the irradiation time is 3-5min.

Step 3: Put the irradiated non-woven fabric into an oven for baking, the oven temperature is 55-65°C, and the baking time is 12-13 hours;

Step 4: Cover the breathable film on the non-woven fabric, and then cover the non-woven fabric on the waterproof film, and use the ultrasonic welding machine to spot weld the three layers of materials together to obtain the hygiene care base film.

The water-based octadecyl acrylate emulsion weighs the raw materials in parts by weight according to the following formula: 19-23 parts of octadecyl acrylate, 0.3-0.5 parts of ethylene glycol dimethacrylate, fatty alcohol polyoxyethylene ether, AEO-3,9 -11 parts, fatty alcohol polyoxyethylene ether (AEO-9) 4.5-5.5 parts, benzophenone 1-5 parts, deionized water 100-120 parts;

The preparation method of water-based octadecyl acrylate emulsion, water-based octadecyl acrylate emulsion weighs raw materials in parts by weight according to the following formula: 20 parts of stearyl acrylate, 0.5 part of ethylene glycol dimethacrylate, fatty alcohol polyoxyethylene ether , AEO-3, 10 parts, fatty alcohol polyoxyethylene ether, AEO-9, 5 parts, benzophenone 5 parts, deionized water 120 parts;

The specific production steps are as follows:

Step 1: Add a small amount of deionized water into reaction tank A and heat to 40-45°C;

Step 2: Add stearyl acrylate and fatty alcohol polyoxyethylene ether (AEO-3, AEO-9) into the reaction tank A, start the mixer in the reaction tank A to stir;

Step 3: Add benzophenone into the reaction tank A, and continue to stir until the benzophenone is completely melted, and the temperature is 40-45°C;

Step 4: Add ethylene glycol dimethacrylate to the reaction tank A to evenly disperse it in the emulsion;

Step 5: Add the remaining deionized water in the reaction tank B, and slowly add the pre-emulsion in the reaction tank A into the reaction tank B;

Step 6: After adding all the pre-emulsion liquid in the reaction tank A, start the mixer in the reaction tank B to stir, the temperature is 40-45°C, and the stirring time is 30-40min, and the water-based stearyl acrylate emulsion can be obtained .

Embodiment two:

The preparation method of the hygienic care bottom film, the hygienic care bottom film weighs each raw material by weight according to the following formula: 1 part of water-based stearyl acrylate emulsion, 1.25 parts of non-woven fabric, 0.4 part of breathable film, and 3.5 parts of waterproof film;

The specific production steps are as follows:

Step 1: Spray the water-based octadecyl acrylate emulsion evenly on the surface of the non-woven fabric through a spray gun, so that the weight of the non-woven fabric increases by 75-85%;

Step 2: Irradiate the non-woven fabric through the ultraviolet lamp tube, the power of the ultraviolet lamp is 480-520W, and the irradiation time is 3-5min.

Step 3: Put the irradiated non-woven fabric into an oven for baking, the oven temperature is 55-65°C, and the baking time is 12-13 hours;

Step 4: Cover the breathable film on the non-woven fabric, and then cover the non-woven fabric on the waterproof film, and use the ultrasonic welding machine to spot weld the three layers of materials together to obtain the hygiene care base film.

Water-based octadecyl acrylate emulsion weighs raw materials in parts by weight according to the following formula: 19 parts of stearyl acrylate, 0.4 part of ethylene glycol dimethacrylate, fatty alcohol polyoxyethylene ether, AEO-3, 11 parts, fatty alcohol Polyoxyethylene ether, AEO-9, 5.5 parts, 4 parts of benzophenone, 110 parts of deionized water;

The specific production steps are as follows:

Step 1: Add a small amount of deionized water into reaction tank A and heat to 40-45°C;

Step 2: Add stearyl acrylate, fatty alcohol polyoxyethylene ether, AEO-3, AEO-9 into the reaction tank A, start the mixer in the reaction tank A to stir;

Step 3: Add benzophenone into the reaction tank A, and continue to stir until the benzophenone is completely melted, and the temperature is 40-45°C;

Step 4: Add ethylene glycol dimethacrylate to the reaction tank A to evenly disperse it in the emulsion;

Step 5: Add the remaining deionized water in the reaction tank B, and slowly add the pre-emulsion in the reaction tank A into the reaction tank B;

Step 6: After adding all the pre-emulsion liquid in the reaction tank A, start the mixer in the reaction tank B to stir, the temperature is 40-45°C, and the stirring time is 30-40min, and the water-based stearyl acrylate emulsion can be obtained .

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. A hygienic nursing base film, characterized in that: comprising weighing parts of raw materials according to the following formula: 0.8-1 part of water-based stearyl acrylate emulsion, 1-1.25 part of non-woven fabric, 0.35-0.45 part of air-permeable film , 3-3.75 parts of waterproof membrane. 2. A kind of hygienic care base film according to claim 1, characterized in that: said non-woven fabrics include but not limited to PP non-woven fabrics and SMMS non-woven fabrics, preferably SMMS non-woven fabrics. 3. A hygiene care base film according to claim 1, characterized in that: said breathable film includes but not limited to TPU film and PE film, preferably PE film. 4. A kind of hygienic care base film according to claim 1, characterized in that: said waterproof film adopts PTFE film. 5. according to the preparation method of a kind of hygienic care base film described in any one in claim 1-4, it is characterized in that, comprise the following concrete steps: Step 1: Spray the water-based octadecyl acrylate emulsion evenly on the surface of the non-woven fabric through a spray gun, so that the weight of the non-woven fabric increases by 75-85%; Step 2: Irradiate the non-woven fabric through the ultraviolet lamp tube, the power of the ultraviolet lamp is 480-520W, and the irradiation time is 3-5min. Step 3: Put the irradiated non-woven fabric into an oven for baking, the oven temperature is 55-65°C, and the baking time is 12-13 hours; Step 4: Cover the breathable film on the non-woven fabric, and then cover the non-woven fabric on the waterproof film, and use the ultrasonic welding machine to spot weld the three layers of materials together to obtain the hygiene care base film. 6. A kind of hygienic care base film according to claim 1, characterized in that: the water-based stearyl acrylate emulsion takes each weight part of raw materials according to the following formula: 19-23 parts of stearyl acrylate, dimethyl Acrylic acid ethylene glycol 0.3-0.5 parts, fatty alcohol polyoxyethylene ether, AEO-3, 9-11 parts, fatty alcohol polyoxyethylene ether, AEO-9, 4.5-5.5 parts, benzophenone 1-5 parts , 100-120 parts of deionized water. 7. the preparation method of water-based stearyl acrylate emulsion according to claim 6, is characterized in that, comprises the following concrete steps: Step 1: Add a small amount of deionized water into reaction tank A and heat to 40-45°C; Step 2: Add stearyl acrylate, fatty alcohol polyoxyethylene ether, AEO-3, AEO-9 into the reaction tank A, start the mixer in the reaction tank A to stir; Step 3: Add benzophenone into the reaction tank A, and continue to stir until the benzophenone is completely melted, and the temperature is 40-45°C; Step 4: Add ethylene glycol dimethacrylate to the reaction tank A to evenly disperse it in the emulsion; Step 5: Add the remaining deionized water in the reaction tank B, and slowly add the pre-emulsion in the reaction tank A into the reaction tank B; Step 6: After adding all the pre-emulsion liquid in the reaction tank A, start the mixer in the reaction tank B to stir, the temperature is 40-45°C, and the stirring time is 30-40min, and the water-based stearyl acrylate emulsion can be obtained . 8. the preparation method of water-based stearyl acrylate emulsion according to claim 7, is characterized in that: described fatty alcohol polyoxyethylene ether, AEO-3, and the complex of fatty alcohol polyoxyethylene ether, AEO-9 The ratio is 2:1.