CN112962351B - Wet tissue capable of being dispersed, preparation method and application - Google Patents

Wet tissue capable of being dispersed, preparation method and application Download PDF

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Publication number
CN112962351B
CN112962351B CN202110187511.9A CN202110187511A CN112962351B CN 112962351 B CN112962351 B CN 112962351B CN 202110187511 A CN202110187511 A CN 202110187511A CN 112962351 B CN112962351 B CN 112962351B
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woven fabric
wetting
wet tissue
wetting liquid
flushable
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CN112962351A (en
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马兆旭
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Shanghai Dingxin Paper Products Co ltd
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Shanghai Dingxin Paper Products Co ltd
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting

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  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Paper (AREA)

Abstract

The invention provides a dispersible wet tissue and a preparation method and application thereof, and relates to the technical field of non-woven materials, wherein the dispersible wet tissue comprises non-woven fabric and wetting liquid for infiltrating the non-woven fabric, the non-woven fabric is mainly prepared from wood pulp and carboxymethyl cellulose, and the wetting liquid comprises 5-20% of soluble glycol substances, 2-5% of soluble divalent metal salt and the balance of water by mass percentage. The invention adopts 100 percent biodegradable non-woven fabric as a carrier, the flushable wet tissue obtained after wetting the wetting liquid has the longitudinal strength of more than 1.2N/5cm, the dissolving time is not more than 15s, the longitudinal strength can meet the daily use strength requirement of people, and simultaneously the longitudinal strength can be quickly disintegrated into fiber flocculence under the shearing force action of water flow, the fiber flocculence can smoothly pass through a closestool, a municipal drainage pipeline and a sewage transmission system, and the 100 percent degradation can effectively reduce the pollution to the environment.

Description

Wet tissue capable of being dispersed, preparation method and application
Technical Field
The invention relates to the technical field of non-woven materials, in particular to a wet tissue capable of being dispersed, a preparation method and application thereof.
Background
With the rapid development of economic level, people are increasingly pursuing high quality of life, the non-woven sanitary material is developing towards green environmental protection, and the dispersible non-woven material is produced at the same time. At present, the dispersible materials are mainly concentrated on spunlace cloth and household paper, but the dispersibility of spunlace cloth is poor, so that the risk of blocking a toilet and an urban pipe network exists, the strength of the dispersible household paper is poor, the dispersible household paper is easy to damage in the using process, and the daily use requirements cannot be met.
In view of the above, the invention is particularly provided.
Disclosure of Invention
The invention aims to provide a dispersible wet tissue to overcome the technical problems that a spunlace fabric is poor in dispersing performance, a closestool and an urban pipe network are easily blocked, the strength of dispersible household paper is poor, and the dispersible household paper is easy to damage and cannot meet daily use requirements.
The invention provides a dispersible wet tissue which comprises non-woven fabric and wetting liquid for infiltrating the non-woven fabric, wherein the non-woven fabric is mainly prepared from wood pulp and carboxymethyl cellulose, and the wetting liquid comprises, by mass, 5-20% of soluble glycol substances, 2-5% of soluble divalent metal salt and the balance of water.
Further, the soluble glycol substance comprises at least one of propylene glycol, polyethylene glycol or isoprene glycol.
Further, the soluble divalent metal salt includes at least one of calcium chloride, zinc chloride, magnesium chloride, or magnesium sulfate.
Go toThe gram weight of the non-woven fabric is 40 to 90g/m 2 Preferably 50 to 75g/m 2 。
Furthermore, in the raw materials of the non-woven fabric, the mass percentage of wood pulp is 85-99%, and the mass percentage of carboxymethyl cellulose is 1-15%;
preferably, in the raw materials of the non-woven fabric, the mass ratio of wood pulp is 92-98.5%, and the mass ratio of carboxymethyl cellulose is 1.5-8%.
Further, the mass ratio of the wetting liquid to the non-woven fabric is 1.5-3.5, preferably 1.7-2.5.
Furthermore, the wetting liquid also comprises auxiliary materials, and the auxiliary materials comprise at least one of an antibacterial agent, a preservative, a surfactant or a spice.
Further, the wetting liquid also comprises a functional additive, and the functional additive comprises at least one of an emollient, a hemorrhoid care agent or a skin antibacterial agent.
The invention also aims to provide a preparation method of the flushable wet tissue, which comprises the following steps: and spraying the wetting solution on the non-woven fabric in a spraying or atomizing mode to obtain the flushable wet tissue.
The invention also aims to provide the application of the flushable wet tissue in a wiping product.
The wet tissue capable of being dispersed has the following beneficial effects:
the invention adopts 100 percent biodegradable non-woven fabric as a carrier, the flushable wet tissue obtained after wetting the wetting liquid has the longitudinal strength of more than 1.2N/5cm and the dissolving time of not more than 15s, can be quickly disintegrated into fiber flocculence under the shearing force of water flow while meeting the daily use strength requirement of people, and can successfully pass through a closestool, a municipal drainage pipeline and a sewage transmission system, thereby effectively reducing the pollution to the environment.
The preparation method of the dispersible wet tissue provided by the invention is simple in process and convenient to operate, can be suitable for large-scale production, and effectively reduces the preparation cost of the dispersible wet tissue.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all embodiments and preferred methods mentioned herein can be combined with each other to form new solutions, if not specifically stated.
In the present invention, the percentage (%) or parts means mass percentage or parts by weight with respect to the composition, unless otherwise specified.
In the present invention, the respective components referred to or the preferred components thereof may be combined with each other to form a novel embodiment, if not specifically stated.
According to a first aspect of the invention, the invention provides a flushable wet tissue, which comprises a non-woven fabric and a wetting liquid for infiltrating the non-woven fabric, wherein the non-woven fabric is mainly prepared from wood pulp and carboxymethyl cellulose, and the wetting liquid comprises 5-20% of soluble glycol substances, 2-5% of soluble divalent metal salt and the balance of water in percentage by mass.
In the present invention, the nonwoven fabric is made from 100% biodegradable materials, including but not limited to, primarily made from wood pulp and carboxymethyl cellulose.
In the invention, the expression "mainly made of … …" means that it can include, in addition to the raw material, auxiliary materials acceptable in the field of degradable nonwoven fabrics, which impart different properties to the nonwoven fabrics. In addition, the "" of the present invention is mainly made of … … ", and can be replaced by closed type" is "or" made of … … ".
In the present invention, "the balance is water" means that the balance is made up by using water in the wetting liquid, so that the sum of all the raw materials in the wetting liquid is 100%, and the technical scheme that the wetting liquid also comprises auxiliary materials and/or functional additives also covers the protection scope of the present invention.
In the wetting liquid provided by the invention, the soluble glycol substances and the soluble divalent salt are mutually cooperated, so that the mechanical strength of the non-woven fabric can be remarkably improved after the non-woven fabric is wetted, and the daily use strength requirement of people is met.
Typically, but not by way of limitation, the wetting fluid has a soluble diol species content of 5%, 8%, 10%, 12%, 15% or 20% by mass and a soluble divalent metal salt content of, for example, 2%, 3%, 4% or 5% by mass.
In the present invention, the wood pulp is a pulp made of wood, preferably conifer wood.
In the invention, before the non-woven fabric is not soaked with the wetting liquid, the wet strength is almost 0, the non-woven fabric is easy to damage, bacterial pollution is easy to cause in the using process, and the non-woven fabric is unsanitary, after the non-woven fabric is soaked by the wetting liquid provided by the invention to form the wet tissue, the strength is obviously improved, the longitudinal strength reaches more than 1.2N/5cm, the daily using requirement of people can be effectively met, meanwhile, the non-woven fabric is discarded into a closestool after being used, can be dispersed and dissolved within 15s, smoothly passes through the closestool, a city drainage pipeline and a sewage transmission system, and effectively reduces the pollution to the environment.
In a preferred embodiment of the present invention, the weight ratio of the soluble diol-based material in the wetting fluid is 6-15% and the weight ratio of the soluble divalent salt is 3-4%, the flushable tissue thus obtained has more excellent mechanical strength and flushability.
In a preferred embodiment of the present invention, the soluble diol includes, but is not limited to, any one of propylene glycol, polyethylene glycol, or isoprene glycol, or a mixture of at least two thereof.
In a preferred embodiment of the present invention, the soluble divalent metal salt includes, but is not limited to, any one or a mixture of at least two of calcium chloride, zinc chloride, magnesium chloride or magnesium sulfate.
In a preferred embodiment of the present invention, the nonwoven fabric has a grammage of 40 to 90g/m 2 In time, can ensure the wetting liquid after being wettedThe wet tissue has the strength requirement, and can be quickly dispersed by water, if the gram weight of the non-woven fabric is higher than 90g/m 2 Waste of raw materials and prolonged water scattering time, and the gram weight of the non-woven fabric is less than 50g/m 2 In time, the mechanical strength of the dispersible wet tissue is difficult to ensure to meet the use requirements of people. Especially when the gram weight of the non-woven fabric is 50 to 75g/m 2 In time, the use of raw materials is reduced while the wet tissue capable of being dispersed is ensured to be rapidly dispersed and the use requirement of strength is met.
Typically, but not by way of limitation, the nonwoven fabric has a grammage of, for example, 40g/m 2 、45g/m 2 、50g/m 2 、55g/m 2 、60g/m 2 、70g/m 2 、80g/m 2 Or 90g/m 2 。
In a preferable scheme of the invention, in the raw materials of the non-woven fabric, the mass ratio of the wood pulp is 85-99%, and the mass ratio of the carboxymethyl cellulose is 1-15%, so that the dispersible wet tissue can be rapidly dispersed within 15s while the strength of the dispersible wet tissue is ensured.
Typically, but not by way of limitation, the nonwoven material may have a wood pulp mass of, for example, 85%, 87%, 88%, 90%, 92%, 95%, 98%, or 99%, and a carboxymethyl cellulose mass of, for example, 15%, 12%, 10%, 8%, 5%, 2%, or 1%.
In a further preferable scheme of the invention, when the mass ratio of wood pulp in the raw materials of the non-woven fabric is 92-98.5% and the mass ratio of carboxymethyl cellulose is 1.5-8%, the wet tissue formed by wetting the non-woven fabric with the wetting liquid has better mechanical strength while ensuring the quick dispersion performance.
In a preferred embodiment of the invention, when the mass ratio of the wetting liquid to the non-woven fabric is 1.5-3.5, the obtained flushable wet tissue is more convenient to use. When the using amount of the wetting liquid is less than 1.5 times of the mass of the non-woven fabric, the mechanical strength of the prepared flushable wet tissue is poor, and the use requirement cannot be met, and when the using amount of the wetting liquid is more than 3.5 times of the mass of the non-woven fabric, after the prepared flushable wet tissue wipes an article, excessive liquid is remained on the surface of the article, and the article is not easy to dry.
In a further preferred scheme of the invention, when the mass ratio of the wetting liquid to the non-woven fabric is 1.7-2.5, the prepared flushable wet tissue has excellent mechanical strength, can avoid excessive liquid from remaining on the surface of a wiping article, and is more beneficial to people to use.
In a preferred embodiment of the invention, the wetting fluid may contain, in addition to the soluble glycol and the soluble divalent salt, a number of excipients to impart additional performance characteristics to the flushable wipe.
Typically, but not by way of limitation, the adjuvant is selected from any one or at least two of an antibacterial agent, a preservative, a surfactant or a fragrance.
In a preferred embodiment of the present invention, functional additives may be added to the wetting fluid in addition to the soluble glycols and soluble divalent salts to impart more functional properties to the flushable wipe.
Typically, but not by way of limitation, functional additives include any one or at least two of emollients having skin care efficacy, hemorrhoid care agents having anti-inflammatory efficacy, and skin antiseptics having antibacterial efficacy.
According to a second aspect of the present invention, the present invention provides a method for preparing the above-mentioned flushable wet wipe, comprising the step of spraying the wetting solution on the nonwoven fabric in a spraying or misting manner, so that the wetting solution infiltrates the nonwoven fabric to obtain the flushable wet wipe.
The preparation method of the flushable wet tissue provided by the invention is simple in process, convenient to operate, easy to realize large-scale production and low in preparation cost.
According to a third aspect of the invention, there is provided the use of a flushable wipe as described above in a wiping article.
Such wiping articles include, but are not limited to, hygiene wiping articles, kitchen wiping articles, skin care wiping articles, and the like.
In order to facilitate understanding of those skilled in the art, the technical solutions provided by the present invention are further described below with reference to examples and comparative examples.
The raw materials used in the following examples and comparative examples, propylene glycol, polyethylene glycol, glycerin, zinc chloride, calcium chloride and sodium carboxymethylcellulose, were all commercially available, and the wood pulp was a wood pulp prepared from coniferous wood and also commercially available, and water was deionized water.
Example 1
The embodiment provides a wet tissue capable of being dispersed, which is prepared by spraying a wetting solution on a non-woven fabric, wherein the mass ratio of the wetting solution to the non-woven fabric is 2:1, the non-woven fabric is prepared from wood pulp and carboxymethyl cellulose, and the gram weight of the non-woven fabric is 55g/m 2 (ii) a The mass percentage of wood pulp in the non-woven fabric raw material is 95%, and the mass percentage of carboxymethyl cellulose in the non-woven fabric raw material is 5%; the wetting liquid is prepared from propylene glycol, calcium chloride and water, wherein the mass ratio of the propylene glycol in the wetting liquid is 5%, the mass ratio of the calcium chloride is 2%, and the balance is water.
Example 2
The embodiment provides a dispersible wet tissue, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in the embodiment, and the non-woven fabric is also the same as that in the embodiment 1, the difference between the wetting liquid and the non-woven fabric is that in the wetting liquid, the mass ratio of propylene glycol in the wetting liquid is 20%, the mass ratio of calcium chloride is 5%, and the balance is water.
Example 3
The embodiment provides a dispersible wet tissue, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in the embodiment, the non-woven fabric is also the same as that in the embodiment 1, and the difference from the embodiment 1 is that in the wetting liquid, the mass ratio of propylene glycol in the wetting liquid is 6%, the mass ratio of calcium chloride is 3%, and the balance is water.
Example 4
The embodiment provides a dispersible wet tissue, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in the embodiment, the non-woven fabric is also the same as that in the embodiment 1, and the difference from the embodiment 1 is that in the wetting liquid, the mass ratio of propylene glycol in the wetting liquid is 20%, the mass ratio of calcium chloride is 3%, and the balance is water.
Example 5
The embodiment provides a dispersible wet tissue, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in the embodiment, the non-woven fabric is also the same as that in the embodiment 1, and the difference from the embodiment 1 is that in the wetting liquid, the mass ratio of propylene glycol in the wetting liquid is 15%, the mass ratio of calcium chloride is 3%, and the balance is water.
Example 6
The embodiment provides a dispersible wet tissue, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in embodiment 1, and the non-woven fabric is also the same as that in embodiment 1, the difference from embodiment 1 is that the wetting liquid is prepared from propylene glycol, calcium chloride and water, the mass ratio of the propylene glycol in the wetting liquid is 10%, the mass ratio of the calcium chloride is 3%, and the balance is water.
Example 7
The embodiment provides a dispersible wet tissue, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in embodiment 1, and the non-woven fabric is also the same as that in embodiment 1, the difference from embodiment 1 is that the wetting liquid is prepared from polyethylene glycol, calcium chloride and water, the mass ratio of the polyethylene glycol in the wetting liquid is 6%, the mass ratio of the calcium chloride is 3%, and the balance is water.
Example 8
The embodiment provides a wet tissue capable of being dispersed, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in embodiment 1, and the non-woven fabric is also the same as that in embodiment 1, the wetting liquid is prepared from polyethylene glycol, calcium chloride and water, the mass ratio of the polyethylene glycol in the wetting liquid is 10%, the mass ratio of the calcium chloride is 3%, and the balance is water.
Example 9
The embodiment provides a wet tissue capable of being dispersed, which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in embodiment 1, and the non-woven fabric is also the same as that in embodiment 1, the wetting liquid is prepared from polyethylene glycol, calcium chloride and water, the mass ratio of the polyethylene glycol in the wetting liquid is 20%, the mass ratio of the calcium chloride is 3%, and the balance is water.
Example 10
The embodiment provides a wet tissue capable of being dispersed, which is prepared by spraying a wetting solution on a non-woven fabric, wherein the mass ratio of the wetting solution to the non-woven fabric is the same as that in embodiment 1, and the non-woven fabric is also the same as that in embodiment 1, the difference between the wetting solution and the non-woven fabric is that the wetting solution is prepared from polyethylene glycol, zinc chloride and water, the mass ratio of the polyethylene glycol in the wetting solution is 10%, the mass ratio of the zinc chloride is 3%, and the balance is water.
Example 11
The embodiment provides a dispersible wet tissue which is prepared by spraying a wetting liquid on a non-woven fabric, wherein the mass ratio of the wetting liquid to the non-woven fabric is the same as that in embodiment 1, and the non-woven fabric is also the same as that in embodiment 1, the wetting liquid is prepared from polyethylene glycol, propylene glycol, calcium chloride and water, the mass ratio of the polyethylene glycol in the wetting liquid is 10%, the mass ratio of the propylene glycol in the wetting liquid is 5%, the mass ratio of the calcium chloride is 3%, and the balance is water.
Comparative example 1
This comparative example provides a dry nonwoven fabric similar to that of example 1 and will not be described in detail.
Comparative example 2
This comparative example provides a wet wipe prepared by spraying water onto a nonwoven fabric having a mass ratio of water to nonwoven fabric of 2:1, which is the same as the nonwoven fabric of example 1 and will not be described again.
Comparative example 3
This comparative example provides a wet wipe prepared by spraying a wetting liquid onto a nonwoven fabric, the mass ratio of the wetting liquid to the nonwoven fabric being the same as in example 1, and the nonwoven fabric being the same as in example 1, except that the wetting liquid is made from glycerol, calcium chloride and water, the glycerol being 20% by mass, the calcium chloride being 3% by mass and the balance being water.
Comparative example 4
This comparative example provides a wet wipe prepared by spraying a wetting liquid onto a nonwoven fabric, the mass ratio of the wetting liquid to the nonwoven fabric being the same as in example 1, and the nonwoven fabric being the same as in example 1, except that the wetting liquid is made from propylene glycol, sodium chloride and water, the mass ratio of propylene glycol in the wetting liquid is 2%, the mass ratio of sodium chloride is 3%, and the balance is water.
Comparative example 5
This comparative example provides a wet wipe prepared by spraying a wetting liquid onto a nonwoven fabric, the mass ratio of the wetting liquid to the nonwoven fabric being the same as in example 1, and the nonwoven fabric being the same as in example 1, except that the wetting liquid is made from propylene glycol, calcium chloride and water, the mass ratio of propylene glycol in the wetting liquid is 10%, the mass ratio of calcium chloride is 1%, and the balance is water.
Comparative example 6
This comparative example provides a wet wipe prepared by spraying a wetting liquid onto a nonwoven fabric, the mass ratio of the wetting liquid to the nonwoven fabric being the same as in example 1, and the nonwoven fabric being the same as in example 1, except that the wetting liquid is made of polyethylene glycol, calcium chloride and water, the mass ratio of polyethylene glycol in the wetting liquid is 10%, the mass ratio of calcium chloride is 1%, and the balance is water.
Test examples
The flushable wet wipes provided in examples 1-11, the dry nonwoven provided in comparative example 1, and the wet wipes provided in comparative examples 2-6 were tested for machine direction strength and hydrolysis time and the results are shown in table 1 below.
Wherein the longitudinal strength is determined according to GB/T12914-2008;
the hydrolysis time was measured according to JIS P4501-1993.
TABLE 1
Figure BDA0002939120170000101
As can be seen from the longitudinal strength and the disintegration time of the dispersible wet tissue provided by the examples 1-11 in the table 1, the invention adopts the non-woven fabric prepared by taking wood pulp and carboxymethyl cellulose as raw materials as a carrier, the longitudinal strength of the wet tissue obtained after being wetted by the wetting agent taking soluble glycol substances and soluble divalent salt as main raw materials is up to more than 1.2N/5cm, the dissolution time is not more than 15s, the wet tissue can be quickly disintegrated into small pieces under the shearing force action of water flow while meeting the daily use strength requirement of people, and the small pieces can smoothly pass through a closestool, an urban drainage pipeline and a sewage transmission system, so that the pollution to the environment is effectively reduced.
As can be seen from the comparison of examples 1-11 with comparative examples 1-2 in Table 1, the wet strength in the machine direction of the nonwoven fabric in the dry state could not be detected, which indicates that the wet tissue formed by wetting the nonwoven fabric with the wetting liquid provided by the present invention could not provide excellent mechanical strength to meet the use requirements of people.
As can be seen from the comparison between examples 1-11 and comparative examples 3-6 in Table 1, when the non-woven fabric is soaked in the wetting liquid with the soluble diol substance mass ratio of 5-20% and the soluble divalent metal salt mass ratio of 2-5% to form the wet tissue, the longitudinal strength of the wet tissue can be greatly improved to more than 1.2N/5cm, and meanwhile, the wet tissue can be quickly dispersed within 10s, so that the daily use requirements of people are met.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. The flushable wet tissue is characterized by comprising a non-woven fabric and a wetting solution for wetting the non-woven fabric, wherein the non-woven fabric is prepared from wood pulp and carboxymethyl cellulose, and the wetting solution comprises 6-15% of soluble glycol substances, 3-4% of soluble divalent metal salt and the balance of water in percentage by mass;
the soluble diol substance comprises at least one of propylene glycol, polyethylene glycol or isoprene glycol;
the soluble divalent metal salt comprises at least one of calcium chloride, zinc chloride, magnesium chloride or magnesium sulfate;
the gram weight of the non-woven fabric is 70-75g/m 2 ；
In the raw materials of the non-woven fabric, the mass percentage of wood pulp is 92-98.5%, and the mass percentage of carboxymethyl cellulose is 1.5-8%;
the wood pulp is made of coniferous wood as a raw material;
the longitudinal strength is measured according to GB/T12914-2008, the hydrolysis time is measured according to JIS P4501-1993, the longitudinal strength of the flushable wet tissue obtained after wetting the wetting liquid is up to more than 1.2N/5cm, and the hydrolysis time is not more than 8s.
2. The flushable wet wipe of claim 1, wherein the mass ratio of the wetting fluid to the nonwoven is from 1.5 to 3.5.
3. The flushable moist wipe set forth in claim 2 wherein the mass ratio of the wetting fluid to the nonwoven fabric is from 1.7 to 2.5.
4. The flushable wet wipe as set forth in claim 1 further comprising an adjuvant comprising at least one of an antimicrobial agent, a preservative, a surfactant, or a fragrance.
5. The flushable wet wipe of claim 1 further comprising a functional additive in the wetting fluid, the functional additive comprising at least one of an emollient, a hemorrhoid care agent, or a skin antiseptic.
6. A process for preparing flushable moist wipes according to any one of claims 1 to 5, comprising the steps of: and spraying the wetting solution on the non-woven fabric in a spraying or atomizing mode to obtain the flushable wet tissue.
7. Use of a flushable wipe according to any of claims 1-5 in a wiping article.
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