CN115089041A - Wet toilet tissue base material and preparation method thereof - Google Patents
Wet toilet tissue base material and preparation method thereof Download PDFInfo
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- CN115089041A CN115089041A CN202210387028.XA CN202210387028A CN115089041A CN 115089041 A CN115089041 A CN 115089041A CN 202210387028 A CN202210387028 A CN 202210387028A CN 115089041 A CN115089041 A CN 115089041A
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- Prior art keywords
- wet
- fiber
- base material
- toilet tissue
- wet toilet
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/16—Paper towels; Toilet paper; Holders therefor
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
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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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- 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
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
Abstract
The invention provides a wet toilet towel base material and a preparation method thereof, and relates to the technical field of articles for daily use. The preparation method of the wet toilet towel base material provided by the invention comprises the following steps: defibering the fiber raw material in water to obtain a defibered fiber system; and mixing the defibering fiber system and the auxiliary agent, and papermaking to obtain the wet toilet tissue base material. The wet toilet tissue base material is prepared by adopting a wet papermaking method, the process is simple and convenient, the production efficiency is higher, the production cost of the wet toilet tissue base material can be reduced, and the wet toilet tissue base material is suitable for popularization and application. The wet toilet towel base material prepared by the method has high strength and flexibility, is easy to disperse when meeting water, and is degradable.
Description
Technical Field
The invention relates to the technical field of articles for daily use, in particular to a wet toilet towel base material and a preparation method thereof.
Background
With the development of science and technology, the change of times and the improvement of living standard of residents, the toilet paper which cannot be removed in life also goes through the process of updating, from the traditional flat paper to the soft roll paper, and then to the wet toilet paper which is recognized by people in the market. Compared with common dry paper towels, the wet toilet paper can wipe off dirt which cannot be wiped off by the dry paper, and the high-quality wet toilet paper can wipe off 99.9% of bacteria (generally, bactericide cannot be contained) more effectively, so that the wet toilet paper becomes a revolutionary new product in the toilet paper field.
At present, the commercially available wet toilet paper is generally produced by a dry-method non-woven fabric process, and has the disadvantages of complex process, low production efficiency and high cost.
Disclosure of Invention
The invention aims to provide a wet toilet tissue base material and a preparation method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a wet toilet towel base material, which comprises the following steps:
defibering the fiber raw material in water to obtain a defibered fiber system;
and mixing the defibering fiber system and the auxiliary agent, and papermaking to obtain the wet toilet tissue base material.
Preferably, the fiber raw material comprises one or more of needle leaf pulp, broad leaf pulp, hemp pulp, bamboo pulp, mulberry silk fiber, viscose fiber, tencel fiber and nano cellulose.
Preferably, the defibering is carried out under stirring conditions, and the rotation speed of the stirring is 2900-3100 r/min.
Preferably, the auxiliaries include paper wet strength agents and softeners.
Preferably, the papermaking comprises the following steps of wire forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding.
Preferably, the concentration of the upper wire forming is 0.001-0.3 wt%.
Preferably, the pressure of the wet pressing is 200 to 400 kPa.
Preferably, the drying temperature of the drying cylinder is 104-106 ℃.
The invention provides the wet toilet towel base material prepared by the preparation method in the technical scheme.
Preferably, the single-layer basis weight of the wet toilet towel base material is 20-40 g/m 2 。
The invention provides a preparation method of a wet toilet towel base material, which comprises the following steps: defibering the fiber raw material in water to obtain a defibered fiber system; and mixing the defibering fiber system and the auxiliary agent, and papermaking to obtain the wet toilet tissue base material. The wet toilet tissue base material is prepared by adopting a wet papermaking method, the process is simple and convenient, the production efficiency is higher, the production cost of the wet toilet tissue base material can be reduced, and the wet toilet tissue base material is suitable for popularization and application. The wet toilet towel base material prepared by the invention has higher strength and flexibility, is easy to disperse in water and is degradable.
Drawings
FIG. 1 is a wet toilet tissue substrate dispersibility photograph of example 1;
fig. 2 is a non-dispersible picture of a wet toilet tissue substrate of comparative example 1.
Detailed Description
The invention provides a preparation method of a wet toilet towel base material, which comprises the following steps:
defibering the fiber raw material in water to obtain a defibered fiber system;
and mixing the defibering fiber system and the auxiliary agent, and papermaking to obtain the wet toilet tissue base material.
The method comprises the step of defibering the fiber raw material in water to obtain a defibered fiber system. In the present invention, the fiber raw material preferably includes one or more of needle pulp, broad leaf pulp, hemp pulp, bamboo pulp, mulberry silk fiber, viscose fiber, tencel fiber and nanocellulose, more preferably a mixed fiber of needle pulp and hemp pulp, or a mixed fiber of needle pulp and broad leaf pulp, or a mixed fiber of needle pulp and bamboo pulp, or a mixed fiber of needle pulp, tencel fiber and mulberry silk fiber, or a mixed fiber of needle pulp, tencel fiber and viscose fiber, or a mixed fiber of needle pulp and tencel fiber, or a mixed fiber of needle pulp, tencel fiber and broad leaf pulp, or a mixed fiber of needle pulp, tencel fiber and nanocellulose. In the present invention, the use of nanocellulose can increase the moisture retention, tensile strength and softness of the finished product.
In the present invention, the mass content of the softwood pulp in the fiber raw material is preferably 50% or more, and more preferably 80 to 95%.
In a specific embodiment of the present invention, the content of the softwood pulp in the mixed fiber of the softwood pulp and the jute pulp is 95% by mass, and the content of the jute pulp in the mixed fiber is 5% by mass. The mass content of the needle pulp in the mixed fiber of the needle pulp and the broad leaf pulp is 90%, and the mass content of the broad leaf pulp is 10%. The mass content of the needle blade pulp in the mixed fiber of the needle blade pulp and the bamboo pulp is 80 percent, and the mass content of the bamboo pulp is 20 percent. The mass content of the needle pulp in the mixed fiber of the needle pulp, the tencel fiber and the mulberry silk fiber is 90%, the mass content of the tencel fiber is 5%, and the mass content of the mulberry silk fiber is 5%. The mass content of the needle pulp in the mixed fiber of the needle pulp, the tencel fiber and the viscose fiber is 80%, the mass content of the tencel fiber is 10%, and the mass content of the viscose fiber is 10%. The mass content of the needle pulp in the mixed fiber of the needle pulp and the tencel fiber is 90%, and the mass content of the tencel fiber is 10%. The mass content of the needle pulp in the mixed fiber of the needle pulp, the tencel fiber and the broad leaf pulp is 90%, the mass content of the tencel fiber is 5% and the mass content of the broad leaf pulp is 5%. The mass content of the needle pulp in the mixed fiber of the needle pulp, the tencel fiber and the nano-cellulose is 90%, the mass content of the tencel fiber is 5% and the mass content of the nano-cellulose is 5%.
In the invention, the beating degree of the needle blade pulp is preferably 9-50 DEG SR, more preferably 15-25 DEG SR; the beating degree of the broad leaf pulp is preferably 13-40 degrees SR, more preferably 15-20 degrees SR; the beating degree of the hemp pulp is preferably 9-50 DEG SR, more preferably 15-30 DEG SR; the beating degree of the bamboo pulp is preferably 13-40 degrees SR, more preferably 15-20 degrees SR; the length of the mulberry silk fiber is preferably 3-8 mm, and more preferably 5-7 mm; the length of the viscose fiber is preferably 3-8 mm, and more preferably 5-7 mm; the fiber length of the tencel fiber (called lyocell fiber) is preferably 3-8 mm, and more preferably 5-7 mm; the beating degree of the tencel fiber is preferably 9-85 DEG SR, more preferably 35-60 DEG SR; the diameter of the nano-cellulose is preferably 20-500 nm.
In the present invention, the mass ratio of the fiber raw material to water is preferably 0.01 to 0.3: 100, more preferably 0.1 to 0.15: 100.
in the present invention, the disintegration is preferably carried out under stirring conditions, and the rotation speed of the stirring is preferably 2900 to 3100r/min, more preferably 2995 to 3005 r/min. In the invention, the temperature of the defibering is preferably 10-50 ℃, and more preferably 20-25 ℃. In the present invention, the time for the fluffing is preferably 30 min.
The invention can disperse the fiber in water evenly to obtain paper with good evenness.
After the defibering fiber system is obtained, the defibering fiber system and the auxiliary agent are mixed and papermaking is carried out to obtain the wet toilet tissue base material. In the present invention, the auxiliary preferably includes a paper wet strength agent and a softening agent. In the present invention, the paper wet strength agent preferably comprises a polyamide epichlorohydrin resin (PAE); the softener preferably comprises alkyl phosphate, alkyl sulfate, alkyl sulfonate or silicone-modified polyurethane resin.
In the present invention, the mass of the auxiliary is preferably 0.001 to 0.006%, more preferably 0.002% of the mass of the fiber raw material.
In the present invention, the papermaking preferably includes the sequential steps of wire forming, wet pressing, drying in a drying cylinder, creping, curling and rewinding. In the present invention, the concentration of the upper wire in the upper wire forming is preferably 0.001 to 0.3 wt%, more preferably 0.1 to 0.15 wt%. In the present invention, the pressure of the wet pressing is preferably 200 to 400kPa, and more preferably 300 kPa. In the invention, the drying temperature of the drying cylinder is preferably 104-106 ℃. In the invention, the wrinkling can regulate the bulk of the paper, so as to achieve fluffy and soft touch.
In the present invention, it is preferable that after the papermaking, nanocellulose is fixed to the surface of the obtained primary paper. In the present invention, the method of fixing preferably comprises surface impregnation, coating or sizing. In the invention, the diameter of the nano-cellulose is preferably 20-500 nm, and more preferably 100-200 nm; the mass fraction of the nanocellulose in the wet toilet tissue substrate is preferably 5%.
The invention also provides the wet toilet towel base material prepared by the preparation method in the technical scheme. In the invention, the wet toilet towel base material is a single-layer or multi-layer composite; the wet toiletThe single-layer basis weight of the towel base material is preferably 20-40 g/m 2 More preferably 30 to 33g/m 2 。
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.
Example 1
Mixing 10g (measured by absolute dryness) of fiber raw material with 2000g of water, defibering for 30min under the condition of 3000r/min, adding PAE and alkyl phosphate, and papermaking to obtain a wet toilet tissue base material; the mass of the PAE and the mass of the alkyl phosphate are respectively 0.002 percent of the mass of the fiber raw material; the papermaking process comprises the steps of net feeding forming, wet pressing and drying by a drying cylinder which are sequentially carried out; the concentration of the upper wire forming is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 2
Mixing 10g (in absolute dry terms) of fiber raw material with 2000g of water, carrying out defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of the mass of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the concentration of the upper wire forming is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 3
Mixing 10g (measured by absolute dryness) of fiber raw material with 2000g of water, defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of the mass of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the concentration of the upper wire forming is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 4
Mixing 10g (in absolute dry terms) of fiber raw material with 2000g of water, carrying out defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of that of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the web-feeding concentration of the web-feeding formation is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 5
Mixing 10g (in absolute dry terms) of fiber raw material with 2000g of water, carrying out defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of the mass of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the concentration of the upper wire forming is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 6
Mixing 10g (in absolute dry terms) of fiber raw material with 2000g of water, carrying out defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of the mass of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the concentration of the upper wire forming is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 7
Mixing 10g (in absolute dry terms) of fiber raw material with 2000g of water, carrying out defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of that of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the web-feeding concentration of the web-feeding formation is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Example 8
Mixing 10g (measured by absolute dryness) of fiber raw material with 2000g of water, defibering for 30min under the condition of 3000r/min, and adding PAE (polyamide acid) for papermaking to obtain a wet toilet tissue base material; the mass of the PAE is 0.002 percent of that of the fiber raw material; the papermaking process comprises the steps of net-feeding forming, wet pressing, drying by a drying cylinder, wrinkling, curling and rewinding which are sequentially carried out; the web-feeding concentration of the web-feeding formation is 0.02 wt%, the pressure of wet pressing is 200kPa, and the temperature of drying by a drying cylinder is 105 ℃.
The fiber raw materials used in this example are shown in table 1; the properties of the resulting wet toilet tissue substrate are shown in table 2.
Comparative example 1
The wet toilet tissue base material is prepared by adopting a dry-method non-woven fabric process in the market.
TABLE 1 fiber raw materials of wet toilet tissue base materials of examples 1 to 8 and comparative example 1
TABLE 2 Performance of the Wet toilet tissue substrates of examples 1-8 and comparative example 1
As can be seen from Table 2, the examples all have higher wet tensile indices than the comparative examples, meeting the in-use strength requirements.
Test example
The wet toilet tissue base materials of example 1 and comparative example 1 were subjected to a dispersibility test using a dispersibility testing machine, with the execution standard of GB/T20810-2018 "toilet paper (including toilet paper base paper)".
The specific test method comprises the following steps: filling tap water into the quincuncial cylinder, setting the rotating speed of a rotor to be 350r/min, after vortex in the cylinder is stable, setting the height from the water surface to the bottom of the vortex to be one third of the total height of the water surface in the cylinder, and placing a wet toilet towel substrate perpendicular to the horizontal plane at the center of the vortex in the cylinder; after 40s, the motor was turned off and the ventilation was stopped. And pouring the wet toilet tissue base material in the cylinder into a beaker, observing whether the wet toilet tissue base material is dispersed, judging that the dispersibility of the wet toilet tissue base material is qualified when one or more fragments appear, and otherwise, judging that the wet toilet tissue base material is unqualified.
Fig. 1 is a photograph of the dispersibility of the wet toilet tissue substrate of example 1, and fig. 2 is a photograph of the non-dispersibility of the wet toilet tissue substrate of comparative example 1.
The wet toilet towel base material prepared by the invention has higher strength and flexibility, is easy to disperse when meeting water, and can be degraded.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. A preparation method of a wet toilet tissue base material comprises the following steps:
defibering the fiber raw material in water to obtain a defibered fiber system;
and mixing the defibering fiber system and the auxiliary agent, and papermaking to obtain the wet toilet tissue base material.
2. The method according to claim 1, wherein the fiber raw material comprises one or more of needle pulp, broad leaf pulp, hemp pulp, bamboo pulp, mulberry silk fiber, viscose fiber, tencel fiber and nanocellulose.
3. The method according to claim 1, wherein the defibering is performed under stirring at a rotation speed of 2900 to 3100 r/min.
4. The method of claim 1, wherein the auxiliary agents include paper wet strength agents and softeners.
5. The method of claim 1, wherein said papermaking comprises, in sequence, wire forming, wet pressing, cylinder drying, creping, curling and rewinding.
6. The method according to claim 5, wherein the concentration of the upper wire in the upper wire forming is 0.001 to 0.3 wt%.
7. The method according to claim 5, wherein the wet pressing pressure is 200 to 400 kPa.
8. The preparation method according to claim 5, wherein the temperature of the drying cylinder drying is 104-106 ℃.
9. The wet toilet tissue base material prepared by the preparation method of any one of claims 1 to 8.
10. The wet toilet tissue substrate according to claim 9, wherein the single layer basis weight of the wet toilet tissue substrate is 20 to 40g/m 2 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210387028.XA CN115089041A (en) | 2022-04-13 | 2022-04-13 | Wet toilet tissue base material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210387028.XA CN115089041A (en) | 2022-04-13 | 2022-04-13 | Wet toilet tissue base material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN115089041A true CN115089041A (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210387028.XA Pending CN115089041A (en) | 2022-04-13 | 2022-04-13 | Wet toilet tissue base material and preparation method thereof |
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2022
- 2022-04-13 CN CN202210387028.XA patent/CN115089041A/en active Pending
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