TW201822908A - Recycling method, recycling system and water-storage system for absorbing products - Google Patents

Abstract

The present invention discloses a recycling method, a recycling system and a water-storage system for recycling materials from used absorbing products. The recycling method includes (a) washing the wastes adhered on the used absorbing products with a first solution; (b) dehydrating the washed absorbing products using a hypertonic solution; (c) breaking the dehydrated absorbing products; and (d) disposing the broken absorbing products in a second solution to recycle the materials according to specific gravities of individual materials.

Description

 Absorbent article recycling method, recycling system and water storage system  

The invention relates to a recycling method, a recycling system and a water storage system. In particular, the present invention relates to a method for recovering an absorbent article, a recovery system, and a water storage system implemented in an absorbent article recovery program.

Since the advent of disposable and disposable absorbent hygiene items (such as disposable diapers, sanitary napkins, etc.), users of all ages around the world have enjoyed the benefits of absorbent hygiene items such as: cheaper, It is easy to carry, easy to use, does not contaminate clothing, and is discarded after use, overcoming the shortcomings of traditional cloth-type absorbent articles that can be reused but must be washed away.

Taking baby diapers as an example, the material contacting the skin layer is non-woven fabric, the outer layer is a polyethylene film as a waterproof layer, and the middle is an absorbent layer including fluff pulp and sodium polyacrylate. The waist part of the adhesive baby diaper is designed with a sticky plastic material adhesive tape, and a special sewing design is provided at the lower part to prevent the dirt from leaking from the side of the lower part. When the disposable diaper is to be discarded, the feces are wrapped in a disposable diaper, and the urine is absorbed into the absorbent layer, and the entire disposable diaper containing feces and urine is put into the trash can. Alternatively, the feces can be discharged into the toilet first, and the disposable diaper with urine can be put into the trash can.

It is estimated that around 6,000 metric tons of disposable diaper products are produced globally, and 2 million discarded disposable diapers are produced daily in Taiwan. As the global population ages, the amount of adult diapers increases. In addition to the two main absorbent hygiene items, adult diapers and baby diapers, absorbent hygiene items include sanitary napkins, sanitary pads, tampons, breast pads, and medical institutions. Products such as cleaning pads and nursing pads used by nursing agencies or homes. The above-mentioned absorbent hygienic articles are usually transported to an incinerator or a landfill with a garbage truck.

The absorbent sanitary article to be used is contaminated with solid or liquid dirt from the human body such as feces, urine, body fluids or menstrual blood, and these absorbent sanitary articles usually contain liquid dirt that is locked into the absorbent layer. Since the absorbent hygienic article is made of a chemical material that is not easily decomposed, and the weight is greatly increased after use, the difficulty in clearing the absorbent sanitary article is increased. For example, absorbent hygienic articles containing moisture are difficult to burn in incinerators, and even lead to early maintenance of incinerators and shortened service life; and buried in landfills are still not easily decomposed and still carry moisture for a long time. In addition, the absorbent hygienic article itself has dirt and odor, and the user has no incentive to recycle the used absorbent hygienic article. Therefore, the vast majority of used absorbent hygienic articles do not enter the recycling system, but instead enter the incinerator or landfill with general waste.

In view of the deficiencies in the prior art, the applicant of this case, after careful experimentation and research, and a perseverance spirit, finally conceived the case and can overcome the shortcomings of the prior art. The following is a brief description of the case.

In order to solve the disadvantage that the used absorbent sanitary article is difficult to be recycled and reused, the present invention first cleans the dirt on the absorbent sanitary article, then dehydrates the absorbent sanitary article in the high-tension solution, and then breaks the absorbent sanitary article. The absorbent material, the fibrous material and the packaging material in the absorbent sanitary article are distributed according to respective specific gravityes at different heights of the water body, and then the absorbent material, the fibrous material and the packaging material are separately recovered.

The invention discloses a method for recovering an absorbent article, comprising an absorbent material, a fibrous material and a packaging material, the recycling method comprising: (a) cleaning the absorbent article with the first solution to remove the absorbent article (b) soaking the absorbent article in the first high-tension solution to dehydrate the absorbent article; (c) breaking the dehydrated absorbent article, and depositing the absorbent material in the container containing the second solution; At the bottom of the container, the fibrous material is suspended at the bottom of the container, and the packaging material is suspended in the liquid surface of the second solution; and (d) the absorbent material, the fibrous material, and the packaging material are recovered.

In certain embodiments, absorbent articles include, but are not limited to, disposable diapers, sanitary napkins, panty liners, tampons, breast pads, adult diapers, cleaning pads, care pads, and the like. In some embodiments, the absorbent material is sodium polyacrylate, the fibrous material is fluff pulp, and the packaging material comprises a polyethylene film; wherein the packaging material further comprises a plastic sheet or a non-woven layer. In some embodiments, the first solution is water or a first high-tension solution, the second solution is water or a second high-tension solution, and the first high-tension solution and the second high-tension solution include, but are not limited to, an ionic solution, a molecular solution, A sugar solution, a high-tension solution which exists in a natural environment and has a solute, and the like. In some embodiments, the first solution comprises an agent to sterilize the use of the absorbent article. In certain embodiments, the weight percent of ions or molecules in the high-tension solution is greater than 0.1%.

The invention further discloses a recycling system for an absorbent article, the absorbent article comprising an absorbent material, a fibrous material and a packaging material, and the recycling system comprises: first, second and third tank bodies. The first tank is for accommodating the first solution, and the first solution is used for cleaning the absorbent article to remove dirt on the absorbent article. The second trough body is coupled to the first trough body and is configured to accommodate the high-tension solution for soaking the absorbent article to dehydrate the absorbent article. The third tank is for containing the second solution and breaking the dehydrated absorbent article fed into the second solution. The absorbent material, the fibrous material and the packaging material are distributed at different heights in the second solution according to their specific gravity, so that the absorbent material, the fibrous material and the packaging material are separately recovered.

The invention further discloses a water body storage system for storing the water body of the absorbent article after the recycling process, the absorbent article comprises an absorbent material, a fiber material and a packaging material, and the water body storage system comprises: first, second and third storage Tank body. The first storage tank body is for storing a first solution after cleaning the absorbent article, wherein the first solution contains dirt from the absorbent article. The second storage tank is for storing a high-tension solution that has been soaked in the washed absorbent article. The third storage tank is used to store the used second solution. The cleaned absorbent article is immersed in a high-tension solution and dehydrated, and the dehydrated absorbent article is crushed and then divided into an absorbent material, a fiber material and a packaging material in the second solution, and the absorbent material, the fiber material and the packaging material are respectively The specific gravity is distributed at different heights in the second solution, so that the absorbent material, the fibrous material and the packaging material are separately recovered.

The invention further discloses a recycling system for an absorbent article, the absorbent article comprising an absorbent material, a fibrous material and a packaging material, the recycling system comprising a tank body, the tank body being configured to: accommodate the first solution, the first solution To wash the absorbent article to remove dirt on the absorbent article; after discharging the first solution and the dirt, accommodating the high-tension solution for soaking the absorbent article to dehydrate the absorbent article; The high-tension solution and the dehydrated absorbent article are crushed to accommodate the second solution, and the broken absorbent article is placed in the second solution, and the absorbent material, the fibrous material and the packaging material are distributed in the second solution according to the respective specific gravity. The height and the level of the absorbent material, the fibrous material and the packaging material are separately recovered.

The invention further discloses a recycling system for an absorbent article, the absorbent article comprising an absorbent material, a fibrous material and a packaging material, and the recycling system comprises two modes: a satellite mode and a unified processing mode. The satellite mode is a two-stage processing unit mode, the first stage is a cleaning, sterilization and dehydration unit and includes a first device configured to clean the absorbent article with the first solution to remove dirt on the absorbent article The dirt is then used to soak the absorbent article with the first high-tension solution to dehydrate the absorbent article, and then remove excess water from the dehydrated absorbent article by mechanical force, and then concentrate the dehydrated absorbent article and transport it to the second stage. a processing unit, the second stage processing unit is a crushing sorting unit and includes a second device configured to crush the dehydrated absorbent article, and place the broken absorbent article in a second solution, absorbable The materials, fibrous materials and packaging materials are distributed according to their respective specific gravityes at different heights in the second solution solution, so that the absorbent materials, fibrous materials and packaging materials are separately recovered.

The unified processing mode of the recycling system is also a one-stage processing unit mode, which includes cleaning, sterilization, dehydration and crushing sorting units. First, the absorbent article is washed with the first solution in the tank to remove dirt on the absorbent article. The absorbent article is then soaked in a high-tension solution to dehydrate the absorbent article, and the dehydrated absorbent article is placed in a tank containing the second solution. In the tank body, the absorbent material, the fiber material and the packaging material are distributed at different heights in the second solution according to the respective specific gravity, so that the absorbent material, the fiber material and the packaging material are separately recovered.

The invention further discloses a method for recovering a material in an absorbent article, the material comprising an absorbent material, a fiber material and a packaging material, and the recycling method comprises: (a) cleaning the stain on the absorbent article with the first solution; (b) using a high-tension solution to dehydrate the used absorbent article; (c) dividing the broken dehydrated absorbent article into an absorbent material, a fibrous material, and a packaging material in the second solution; and (d) Recovering at least one of the materials at different heights of the second solution depending on the respective specific gravity of the materials.

The invention further discloses a method for recovering a material in an absorbent article comprising: (a) cleaning the soil on the absorbent article with the first solution; (b) using the high-tension solution to absorb the absorbent Dehydration of the article; (c) breaking using the absorbent article; and (d) placing the broken absorbent article in the second solution to recover the material. In some embodiments, steps (a), (b), and (c) may be changed according to factors such as the condition, quality, or quantity of the absorbent article, such as steps (a) → (b) → (c). , step (a) → (c) → (b), step (b) → (a) → (c), step (b) → (c) → (a), step (c) → (a) → ( b), and step (c) → (b) → (a).

The present invention further discloses a method of treating an absorbent article comprising: (a) cleaning the soiled material on the absorbent article with the first solution; and (b) using the high-tensioning solution to dehydrate the used absorbent article To obtain an absorbent article that has been washed and dehydrated by at least 18%.

1‧‧‧Water storage container

2‧‧‧Pharmaceutical tank

3, 4, 7, 8, 9‧‧‧

5‧‧‧ collection trough

6, 10, 11‧‧‧ storage tank

20‧‧‧Recycling organization structure

21, 22, 23, 24‧‧‧ on-site cleaning and disinfection unit

25‧‧‧ Sorting Center

30‧‧‧ cleaning, sterilization and dehydration unit

31‧‧‧ first device

32‧‧‧Fracture sorting unit

33‧‧‧second device

40‧‧‧ Cleaning, sterilization, dehydration and crushing sorting unit

41‧‧‧ tank

Fig. 1 is a schematic view showing the steps of washing and dehydrating the method for recovering an absorbent article of the present invention.

Fig. 2 is a schematic view showing the separation step of the method for recovering an absorbent article of the present invention.

Fig. 3 is a schematic view showing the dehydration rate of the absorbent article of the present invention after dehydration of different concentrations of the high-tension solution.

Figure 4 is a schematic view of the present invention for configuring an on-site cleaning and disinfecting unit and a sorting center to recover absorbent articles.

Figure 5 is a schematic diagram of a satellite mode recovery system of the present invention.

Figure 6 is a schematic diagram of a recycling system for the unified processing mode of the present invention.

The inventions set forth in the present invention will be fully understood by the following examples, so that those skilled in the art to which the invention pertains can be practiced. However, the implementation of the present invention is not limited by the following embodiments. Other embodiments may be devised by those skilled in the art, and the embodiments are intended to be within the scope of the invention.

The term "absorbent article", "absorbent article", "hygienic article" or "superabsorbent product" as used herein means, but not limited to, adult diapers, baby diapers, sanitary napkins, sanitary pads, sanitary napkins. Products such as strips, anti-overflow pads, cleaning pads and nursing pads are mainly composed of contact skin layer, intermediate absorbent layer and outer layer. The foregoing article or product may be an unused article or product, or may be an article or product that is used, or may be an article or product that is used and that is soiled. Preferably, the article or product that is used or used and that is contaminated is the object of the material of the present invention that is intended to recover its material. However, it is understood by those of ordinary skill in the art that materials such as absorbent materials, fibrous materials, and packaging materials can be recovered from unused articles or products by the recycling method of the present invention.

The term "contacting the skin layer" as used herein is composed of a water permeable material including, but not limited to, non-woven fabric. The term "intermediate absorbent layer" as used herein includes absorbent materials, fibrous materials, and the like. The term "outer layer" as used herein is composed of at least a water-impermeable material such as packaging material. In the case of baby diapers, the outer layer also includes a plastic adhesive tape coated with an adhesive. In the case of female physiological products such as sanitary napkins and sanitary pads, the outer layer also includes a backing adhered to the outer layer and/or the outer layer of the leak-proof side.

The term "absorbent material" as used herein refers to a material composed of a superabsorbent polymer that absorbs liquids that are many times to hundreds of times greater than its own mass, including but not limited to sodium polyacrylate. The term "fibrous material" as used herein includes, but is not limited to, fluff pulp, pulp, fiber, cellulose, or the like. The term "packaging material" as used herein includes, but is not limited to, a polyethylene film.

Please refer to FIG. 1 , which is a schematic diagram of the steps of washing and dehydrating the method for recovering an absorbent article of the present invention. In Fig. 1, the absorbent article to be used is immersed in a water body (for example, water or a high-tension solution) in the tank body 3, and washed and stirred to cause water absorption and swelling of the absorbent article to be used. When the absorbent article is also designed with a fastening tape (or adhesive), the user usually uses the adhesive tape (or adhesive tape) on the absorbent article to wrap the dirt in the absorbent article. The absorbent article used in the water body swells in water, is cleaned and physically disturbed, and the adhesive tape attached to the absorbent article is easily released by the expansion pressure, and the adhesive tape is reduced in viscosity, so that the absorbed absorption is used. The dirt on the sexual article is exposed to the water body, and the used absorbent article is repeatedly washed with water. At this time, the washed absorbent article has no dirt or odor.

In the first figure, the aforementioned cleaning and physical disturbance are not intended to break the absorbent article. If the absorbent material, the fibrous material and the packaging material are dispersed in the water body in the washing step, it will be disadvantageous for subsequent recovery, but it can be implemented and finally recovered into the absorbent material, the fiber material and the packaging material.

Next, the washed absorbent article is immersed in the high-tension solution in the tank body 4 to cause the superabsorbent polymer to permeate, and the washed and water-swellable absorbent article is subjected to dehydration. The volume, weight or liquid weight of the dehydrated absorbent article will be less than the volume and weight of the absorbent article used and not treated by the present technology. The tank body 4 can further be provided with a device for outputting centrifugal force or pressure to increase the degree of dehydration of the washed absorbent article by centrifugal force or applied pressure, and even completely dehydrate the washed absorbent article. Due to the high ion concentration of the high-tension solution, common microorganisms (bacteria, mold, viruses, etc.) on the washed absorbent articles are also dehydrated to achieve bactericidal effects. The dehydrated absorbent article not only has a reduced volume, weight, but also no odor or microbial adhesion. The dehydrated absorbent article is concentrated in the collection tank 5, followed by subsequent processing, temporary storage or shipping.

Continuing to refer to Fig. 1, the water body introduced into the tank body 3 may be tap water or ground water, which may be directly introduced into the tank body 3 via a water company pipeline or a subsurface pipeline, or may be stored in the water storage tank 1 (for example, a water tower or a water storage tank) ), and then introduced into the tank 3. Alternatively, a dispensing tank 2 connected to the tank body 3 may be provided, and the cleaning and disinfecting agent in the dispensing tank 2 is introduced into the tank body 3 via a line (not shown). Since the water body which has washed the absorbent article contains the dirt from the absorbent article, it is sent to the storage tank body 6 for storage, and is awaiting subsequent processing. Alternatively, the body of water that has been washed through the absorbent article can also be recycled back to the dispensing tank 2 for reuse. The high-tension solution soaked through the cleaned absorbent article is transported from the tank 4 to the storage tank 10 for storage or disposal.

Alternatively, the tank body 3 and the tank body 4 may be integrated into a single tank body (not shown in FIG. 1), which may be provided with a stirring device and a dewatering device for performing cleaning of the absorbent article in the single tank body. The stirring and dehydrating steps; and can be connected to a storage tank (for example, the storage tank 10 of FIG. 1) to store the washed, stirred solution and the used high-tension solution.

Please refer to FIG. 2, which is a schematic diagram showing the separation steps of the method for recovering an absorbent article of the present invention. In Fig. 2, the dehydrated absorbent article in the collecting tank 5 is sent to the tank 7 for crushing. The crushing method includes, but is not limited to, crushing the dehydrated absorbent article by physical means such as stirring, impacting, crushing, cutting, grinding, shaking, tapping, drilling, etc., and then crushing the absorbent article with a solution (for example, a high-tension solution or Water) mixed and further broken. Alternatively, the dehydrated absorbent article is immersed in the solution in the tank 7 and then broken by physical means including, but not limited to, agitation, impact, crushing, cutting, grinding, shaking, tapping, drilling, and the like. The absorbent material, the fibrous material, and the packaging material in the broken absorbent article are dispersed in the solution. Since the specific gravity of various materials in the broken absorbent article is different, the absorbent material, the fibrous material, and the packaging material are distributed at different heights in the solution according to their respective specific gravity after standing. Among them, the packaging material (such as polyethylene film) is bulky and small in specific gravity, and is easy to suspend on the surface of the solution. It can be recovered by using mechanical means to recover the packaging material; the fiber material is small in volume and easy to suspend, and it will be suspended in the solution, and it will be suspended. The settling time is increased and settled in the lower position of the solution, and the fiber material can be collected by using a filtering device such as a sieve; the absorbent material has a large specific gravity and is easily precipitated at the bottom of the solution, and the solution can be discharged out of the tank and simultaneously collected and absorbed by the filtering device. Sexual material. In this separation step, the absorbent material is usually precipitated in the form of a polyacrylate at the bottom of the solution. Non-woven fabrics and adhesive tapes are also easy to suspend on the surface of the solution due to their small specific gravity.

Alternatively, as shown in Fig. 2, the broken absorbent article further separates the material in the tank body 7 and the associated tank bodies 8 and 9. Absorbent materials, fibrous materials and packaging materials are gradually distributed to different heights of the solution in a slowly flowing solution, and the packaging materials, fibrous materials and absorbents can be recovered in the tanks 7, 8 and 9 respectively due to the slow flow of the solution. material. The solution used in the tank 7 or the solution used in the tanks 7, 8, and 9 can be stored in the storage tank body 11, and then recycled after being subjected to water treatment.

The three tanks 7, 8, and 9 are only examples. Those skilled in the art can adjust the number of the tanks 7-9 according to actual needs, or design the tanks 7-9 as a continuous tank. To recover specific materials in their respective tanks.

The high-tension solution used in the present invention includes, but is not limited to, ions, molecules (solutes), sugars, or high-tension solutions having a solute present in a natural environment, and the sugars include, but are not limited to, monosaccharides such as glucose and sucrose. A disaccharide or polysaccharide sugar formed by combining monosaccharides. In some embodiments, a solution having a concentration by weight (wt.%) greater than 0.1% can be selected as a high-tension solution, and the high-tension solution can be recycled for reuse.

Please refer to FIG. 3, which is a schematic diagram of the dehydration rate of the absorbent article of the present invention after dehydration of different concentrations of the high-tension solution. In a specific embodiment, when the weight percentage (wt.%) is 1%, 10 g of the solute is dissolved in 1 liter of water, and similarly, it can be pushed to other concentration percentages, wherein the absorbent article is high. The molecularly absorbable material can be dehydrated via a difference in concentration. As shown in Fig. 3, when the concentration of dissolved matter in water is 1%, the unit dehydration rate of the absorbent material is about 60.0%; when the concentration of dissolved matter in water is 40%, the unit dehydration rate of the absorbent material is as high as 90.0%. The concentration of the dissolved matter in water is 16% by weight, which is one of the optimal operating concentrations. The results in Fig. 3 show that the use of the high-tension solution of the present invention can effectively dewater the washed absorbent article.

When 30% by weight of sucrose and glucose solution are used as the high-tension solution, the unit dehydration rate of the absorbent material is 18% to 22%, indicating that the sugar solution can also be used as a high-tension solution, and the cleaned absorbent article can be effectively used. Greatly dehydrated.

Please refer to FIG. 4 , which is a schematic diagram of configuring an on-site cleaning and disinfecting unit and a sorting center to recover an absorbent article according to the present invention. In the present invention, the absorbent article can be greatly reduced in weight, volume, and odor without being washed and dehydrated, so that the dehydrated absorbent article can be transported to other places for the crushing and recovery process. As shown in Fig. 4, the recycling organization unit 20, the on-site cleaning and disinfecting units 21, 22, 23 and 24 respectively include, but are not limited to, a medical institution, a nursing institution, a home, etc., and are equipped with small tanks 3 and 4 (see Figure 1), a single tank that integrates the tanks 3 and 4 or a tank that meets the required capacity of the service population, and the on-site cleaning and disinfecting units 21-24 collect the collected absorbent articles according to the above description. Dehydration reduces the volume and weight of the dehydrated absorbent article without odor. Next, the dehydrated absorbent articles are transported from the on-site cleaning and disinfecting units 21 to 24 to the sorting center 25 to crush and recover the materials. Alternatively, if a uniform recycling site with a large scale and processing capacity, a medical institution, a care facility, or a home can directly combine 21 to 24 with 25, the collected absorbent articles are uniformly collected, and then washed and sterilized. The dewatering and crushing sorting unit is used to recover the absorbent material, the fiber material and the packaging material separately.

The absorbent article recovery system of the present invention can include two modes: a satellite mode and a unified processing mode. As shown in Fig. 5, the satellite mode is a two-stage processing unit mode, the first stage being the cleaning, sterilization and dehydration unit 30, and the second stage being the crush sorting unit 32. The first device 31 of the first stage is configured to clean the absorbent article with the first solution to remove the dirt on the absorbent article, and then use the first high-tension solution to soak the absorbent article to dehydrate the absorbent article and reuse it. Mechanically remove excess water from the dehydrated absorbent article. The dehydrated absorbent article is concentrated and transported to the second stage. The second stage 33 of the second stage is configured to crush the dehydrated absorbent article, and the broken absorbent article is placed in the second solution, and the absorbent material, the fibrous material and the packaging material are distributed according to the respective specific gravity. At different heights in the solution solution, the absorbent material, the fibrous material and the packaging material are separately recovered.

Please refer to FIG. 6 , which is a schematic diagram of a recycling system of the unified processing mode of the present invention. In Fig. 6, the unified processing mode is also a one-stage processing unit mode including cleaning, sterilization, dehydration, and crush sorting unit 40. First, the absorbent article is washed with the first solution in the tank 41 to remove dirt on the absorbent article. The absorbent article is then soaked in a high-tension solution to dehydrate the absorbent article, and the dehydrated absorbent article is placed in the tank 41 containing the second solution. In the tank body 41, the absorbent material, the fiber material, and the packaging material are distributed at different heights in the second solution according to their respective specific gravities, so that the absorbent material, the fiber material, and the packaging material are separately recovered.

In the method of recovering the material from the use of the absorbent article, the first solution is used to clean the dirt on the absorbent article, the high-tension solution is used to dehydrate the absorbent article, and the absorbent article is used. The order may be changed according to factors such as conditions, quality or quantity of the absorbent article, such as washing → dehydration → crushing, washing → crushing → dehydration, dehydration → washing → crushing, dehydration → crushing → washing, crushing → washing → dehydration, or Broken → dehydrated → cleaned. When the dehydration step of the high-tension solution is first carried out, since the high-tension solution also causes the adhesive on the absorbent article to be less adhesive or the plastic material adhesive tape to be loosened, the dehydration step (disturbing the water body if necessary) will cause the absorbent article Presents a flat, dry, flat, rather than tight package. When the crushing process is first performed, the material in the absorbent article will be released into the second solution, and then the dehydrating step will cause the absorbent material to exist in the high-tension solution as a precipitate, and then the cleaning step can be used to remove the dirt. Recover absorbent materials.

Example:

In the first stage, 100 pieces of used diapers are collected at the medical institution, nursing home or home, and then put into the washing tank, and the diaper is washed twice with 600L of water, and then the waste water is discharged and washed. The diaper absorbs a large amount of water and retains water due to the polymer absorbent material (sodium polyacrylate), and the volume of 100 diapers expands to 250L. Next, a sodium chloride high-tension solution having a 8% by weight of dissolved matter was added to dehydrate the polymer absorbent material. After physically squeezing to filter out moisture from the diaper, the volume and weight of 100 diapers were reduced to 1/20 of the diaper originally collected. That is, the volume is about 12.5 L and the weight is about 12.5 Kg.

In the second stage, the dewatered diaper is broken by a crushing device at the sorting center, and the broken diaper is sent to a tank containing a 8 wt.% sodium chloride high-tension solution. After the fluid is stirred by the high-tension solution, the packaging material (such as polyethylene film) suspended on the surface of the high-tension solution is first collected by using a filter device such as a filter screen, and then the fiber material is suspended by the fluid perturbation of the high-tension solution. In the high-tension solution, the filter material is used to collect the fiber material; finally, since the dehydrated polyacrylate has a heavier specific gravity and precipitates at the bottom of the tank, the high-tension solution is removed from the tank to collect the absorbent material. The results showed that 100 pieces of the used diaper were finally recovered to obtain 0.8 kg of packaging material, 6.5 kg of fibrous material and 1.4 kg of absorbent material (polyacrylate).

In the present invention, the mass percent of the solutes used in both the high-tension solution used in the dehydration step and the high-tension solution used in the crushing/recovering step may be the same or different. The sodium chloride high-tension solution was used in the crushing/recovering step of the foregoing embodiment. In the crushing/recovering step, the dehydrated absorbent material is still in a dehydrated state in which the weight and volume are small in the high-tension solution, which facilitates recovery and storage of the recovered absorbent material. In the crushing/recovering step, the various materials to be recovered remain sterile and odor-free in the high-tension solution. However, it is also possible to use a general water body in the crushing/recovering step, in which the dehydrated absorbent material is volume-expanded, which is advantageous for collecting the absorbent material due to an increase in volume.

In summary, the present invention provides a method, a system, a water storage system, and an absorbent article removal and recovery structure for efficiently recovering an absorbent article, which can effectively wash away dirt on the recyclable article and greatly reclaim the recyclable article. Dehydration reduces the volume and weight of recycled articles without odor, and recovers absorbent materials, fibrous materials and packaging materials according to the specific gravity of the materials. The absorbent article removal and recovery structure provided by the invention can be applied to medical institutions, care institutions or homes of different scales, and the on-site cleaning and disinfection unit and the sorting center can be set separately, or in a medical institution, a nursing institution or a home. Integrate the on-site cleaning and disinfection unit and sorting center into one device or device. The case belongs to the technical field of green energy. The absorbent materials, fiber materials and packaging materials in the absorbent articles can be reused for the manufacture of absorbent articles or other articles using absorbent materials, fibrous materials or packaging materials. It can greatly reduce the raw materials (such as tree felling), energy, water and electricity that are required to be produced from the raw materials to be made into absorbent materials, fiber materials and packaging materials, and also contribute to energy saving and carbon reduction.

The invention is a difficult and innovative invention, and has profound industrial value, and is submitted in accordance with the law. In addition, the present invention may be modified by those skilled in the art without departing from the scope of the appended claims.

Claims (14)

 A method for recovering an absorbent article, the absorbent article comprising an absorbent material, a fibrous material and a packaging material, the recycling method comprising: (a) washing the absorbent article with a first solution to remove the absorbent (b) soaking the absorbent article in a first high-tension solution to dehydrate the absorbent article; (c) breaking the dehydrated absorbent article in a second solution Depositing the absorbent material at the bottom of the container in a container, suspending the fibrous material at the bottom of the container, and suspending the packaging material in the liquid level of the second solution; and (d) recovering the absorbent material The fiber material and the packaging material.    The recycling method of claim 1, wherein the absorbent article is selected from the group consisting of a disposable diaper, a sanitary napkin, a sanitary pad, a tampon, a breast milk pad, an adult diaper, and a One of the groups consisting of a cleaning pad and a pad.    The recycling method of claim 1, wherein the absorbent material is sodium polyacrylate, the fibrous material is fluff pulp, and the packaging material comprises a polyethylene film.    The recycling method of claim 3, wherein the packaging material further comprises a plastic sheet or a non-woven layer.    The recovery method of claim 1, wherein the first solution is one of water and a first high-tension solution, and the second solution is one of water and a second high-tension solution, and the first The high-tension solution and the second high-tension solution are respectively selected from the group consisting of an ionic solution, a molecular solution, a monosaccharide solution, a high-tension solution existing in a natural environment and having a solute, and a combination thereof.    An absorbent article recovery system comprising an absorbent material, a fibrous material and a packaging material, the recycling system comprising: a first tank body for containing a first solution, the first solution For cleaning the absorbent article to remove dirt on the absorbent article; a second tank coupled to the first tank and for containing a high-tension solution for immersing the absorption a removable article for dehydrating the absorbent article; and a third tank for containing a second solution and crushing the dehydrated absorbent article fed to the second solution, wherein the absorbent material, the absorbent material The fibrous material and the packaging material are distributed at different heights in the second solution according to respective specific gravity, so that the absorbent material, the fibrous material and the packaging material are separately recovered.    The recovery system of claim 6, wherein the weight percentage of ions or molecules in the high-tension solution is greater than 0.1%.    An absorbent article recovery system comprising an absorbent material, a fibrous material and a packaging material, the recycling system comprising: a tank configured to: contain a first solution, the first solution For cleaning the absorbent article to remove dirt on the absorbent article; after discharging the first solution and the dirt, accommodating a high-tension solution for soaking the absorbent article, so that Dehydrating the absorbent article; accommodating a second solution after discharging the high-tension solution and dehydrating the absorbent article, the broken absorbent article being placed in a second solution, the absorbent material, the fiber The material and the packaging material are distributed at different heights in the second solution according to respective specific gravity, so that the absorbent material, the fibrous material and the packaging material are separately recovered.    A recycling system for an absorbent article, the absorbent article comprising an absorbent material, a fibrous material and a packaging material, the recycling system comprising: a first device, configured to: wash the absorbent article with a first solution To remove the dirt on the absorbent article; to dehydrate the absorbent article with a high-tension solution; and to remove excess moisture from the dehydrated absorbent article by a mechanical force; and a second device configured to Dissolving the dehydrated absorbent article; placing the broken absorbent article in a second solution, the absorbent material, the fibrous material and the packaging material are distributed according to respective specific gravity in different heights in the second solution The absorbent material, the fibrous material, and the packaging material are separately recovered.    A method for recovering a material in an absorbent article, the material comprising an absorbent material, a fibrous material and a packaging material, the recycling method comprising: (a) washing the used absorbent article with a first solution (b) using a high-tension solution to dehydrate the used absorbent article; (c) dividing the broken dehydrated absorbent article into the absorbent material, the fiber in a second solution And the packaging material; and (d) recovering at least one of the materials at different heights of the second solution depending on the respective specific gravity of the material.    The recovery method of claim 10, wherein the first and second solutions comprise a medicament for disinfecting the used absorbent article.    A method of recovering a material in an absorbent article, comprising: (a) cleaning the soiled absorbent article with a first solution; (b) using the high absorbent solution for the absorbent article Dehydrating; (c) breaking the used absorbent article; and (d) placing the broken absorbent article in a second solution to recover the material.    The recycling method according to claim 12, wherein the order of steps (a), (b) and (c) is selected from one of the group consisting of: step (a) → (b) → ( c), step (a) → (c) → (b), step (b) → (a) → (c), step (b) → (c) → (a), step (c) → (a) → (b), and step (c) → (b) → (a).    A method of treating an absorbent article comprising: (a) washing the soiled material on the absorbent article with a first solution; and (b) using a high-tensioning solution to dehydrate the used absorbent article To obtain the used absorbent article that has been washed and dehydrated by at least 18%.