CN109403129B - Paper cigarette filter stick containing collagen fibers and preparation method thereof - Google Patents

Paper cigarette filter stick containing collagen fibers and preparation method thereof Download PDF

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Publication number
CN109403129B
CN109403129B CN201811314759.1A CN201811314759A CN109403129B CN 109403129 B CN109403129 B CN 109403129B CN 201811314759 A CN201811314759 A CN 201811314759A CN 109403129 B CN109403129 B CN 109403129B
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paper
filter stick
accounting
collagen
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CN109403129A (en
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周建
李东亮
施丰成
黄馨
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China Tobacco Sichuan Industrial Co Ltd
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China Tobacco Sichuan Industrial 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
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/10—Composite fibres
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/18—Mouthpieces for cigars or cigarettes; Manufacture thereof
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/28—Organic non-cellulose fibres from natural polymers
    • D21H13/34—Protein fibres

Abstract

The invention discloses a paper cigarette filter stick containing collagen fibers and a preparation method thereof, wherein the paper cigarette filter stick comprises the following raw materials in parts by weight, 1-90% of the collagen fibers and 10-99% of the fibers for papermaking. The preparation method comprises the following steps: preparing collagen fiber paper; and (3) performing conventional forming process on the collagen fiber paper by adopting a paper filter stick, and performing rolling, wrapping and forming to obtain the paper cigarette filter stick containing collagen fibers. The paper filter stick prepared by the method can effectively reduce tar and other harmful components in cigarette smoke, and simultaneously improves the influence of a common paper filter stick on the smoking taste of cigarettes.

Description

Paper cigarette filter stick containing collagen fibers and preparation method thereof
Technical Field
The invention relates to the technical field of cigarette filter stick preparation, in particular to a paper cigarette filter stick containing collagen fibers and a preparation method thereof.
Background
In the modern cigarette industry, the cigarette filter stick is an indispensable part of a cigarette and plays an important role in reducing tar and harm. At present, a filter element of the filter stick is mainly made of acetate fiber or polypropylene fiber. These fibers may enter the human body with the smoking of the cigarette and cause damage to human health. With the continuous concern of people on smoking and health problems, the emerging paper filter stick meets the development requirements of the industry. The paper filter stick has a good smoke interception effect, meanwhile, the raw materials are natural and renewable, the cost is low, and the paper filter stick is more easily degraded. However, the paper filter stick has certain defects such as deficiencies in appearance, elasticity and water absorption; collapse is easily generated in the cigarette smoking process, the filter stick is compressed and deformed, the smoking resistance is increased, and the smoking is difficult; the paper fiber absorbs part of moisture in the smoke, so that the smoke is dry; the smoking process has obvious paper smell and the like. In order to improve the performance of paper filter sticks, people are constantly searching and researching. For example, patent 201610306228.2 introduces bamboo-based fiber into traditional paper filter stick, on one hand, harmful substances in smoke are reduced, and on the other hand, the smoking quality of cigarette is improved. Patent CN104172472A provides a bagasse fiber paper filter stick, which brings sweet note to smoke sugarcane in the process of cigarette smoking, reduces paper taste and miscellaneous gas, and endows cigarette with sweet characteristic. Although the methods can improve the suction quality of the paper filter sticks to a certain degree, the retention effect of the methods on harmful components in smoke is still to be improved.
The collagen fiber is the main fiber in the dermis layer of the animal and accounts for 95 to 98 percent of the total fiber mass of the dermis. The collagen fibers are in the form of fiber bundles, and one thick fiber bundle can be divided into a plurality of thin fiber bundles which can be combined with other fiber bundles to form another thick fiber bundle. The materials are continuously divided and combined, combined and divided, and are interpenetrated and interwoven in the dermis to be woven into a special three-dimensional reticular structure. Collagen fibers are mainly composed of collagen. Collagen is a natural biological macromolecule, and the molecular structure of the collagen contains a large amount of polar groups such as peptide bonds, amino groups, carboxyl groups, hydroxyl groups and the like, so the collagen has good biocompatibility, biodegradability and bioactivity, and is widely applied to the fields of food, medicine, tissue engineering, cosmetics and the like at present.
At present, collagen fibers or collagen have been studied for use in paper manufacture. For example, patent CN1456146A discloses collagen facial mask paper prepared by directly molding collagen hydrolysate as a functional substance and natural cellulose and cellulose derivatives thereof as carriers. The patent CN1580387A takes the ash bark leftovers as raw materials, and is used together with plant fibers to prepare the composite household paper. The technology can save the consumption of raw wood pulp, reduce the use of papermaking auxiliary agents, simplify the production process and reduce the papermaking pollution. The addition of the collagen fiber ensures that the finished paper has higher strength and good flexibility. Patent CN101050602A provides a paper made of collagen fiber and a processing method thereof, which can solve the problems of poor paper making quality by using plant fiber, damage to natural resources and over-high price of chemical fiber paper; meanwhile, the problem of recycling leather or leather waste can be solved. However, in the above patent, or because of using chromium-containing tanning waste, dechroming is required, which results in a complicated production process; or due to insufficient treatment, the collagen fiber bundles can not be fully opened, and the fiber interstitium can not be completely removed, thereby affecting the quality and the use performance of the finished paper. Meanwhile, no report that the paper containing the collagen fiber is used in the preparation process of the cigarette filter stick is found.
Disclosure of Invention
In order to overcome the technical defects, the invention provides the paper cigarette filter stick containing the collagen fiber and the preparation method thereof.
In order to achieve the technical effect, the invention provides a paper cigarette filter stick containing collagen fibers, which comprises the following raw materials in parts by weight, 1-90% of the collagen fibers and 10-99% of the papermaking fibers.
The further technical scheme is that the preparation method of the collagen fiber comprises the following steps: the raw materials are subjected to liming, deliming, softening, washing, demineralizing, dehydrating, drying and crushing.
The further technical scheme is that the preparation method of the collagen fiber specifically comprises the following steps: (1) liming: cutting a second layer of ash skin of the cowhide into ash skin sheets with the thickness of 1-2 mm, putting the ash skin sheets into a rotary drum, adding water accounting for 100-200% of the weight of the ash skin and hydrated lime accounting for 1-4% of the weight of the ash skin, and rotating the ash skin sheets for 12-18 hours at normal temperature; (2) deliming: controlling water, adding water with the weight of 200% of the weight of the ash bark and ammonium sulfate with the weight of 0.1% -0.5%, and rotating for 20-24 hours; controlling water, adding water accounting for 100-150% of the weight of the ash bark, a non-ionic degreasing agent accounting for 0.1-0.5% of the weight of the ash bark and ammonium sulfate accounting for 2-3% of the weight of the ash bark, and rotating for 1.5 hours; (3) softening: controlling water, adding water accounting for 50 percent of the weight of the ash bark, ammonium sulfate accounting for 0.5 percent of the weight of the ash bark and softening enzyme accounting for 1.0 to 1.5 percent of the weight of the ash bark, and rotating for 30 minutes; (4) washing with water: controlling water, adding 200-300% of water, and washing for 20 minutes; (5) demineralizing: controlling water, adding deionized water accounting for 100% of the weight of the ash skin, and rotating for 4-6 hours; (6) and (3) dehydrating: controlling water, adding absolute ethyl alcohol with the weight of 100 percent of that of the ash bark, rotating for 2 hours, and carrying out the operation for several times, and replacing the absolute ethyl alcohol every 2 hours until the dehydration requirement is met; (7) and (3) drying: cutting the dehydrated skin into small skin blocks of 1cm x 1cm, placing in a low-temperature oven, and drying at 50 deg.C to oven dry; (8) crushing: and (4) crushing the oven-dried small leather blocks into leather powder of 40 mu m by using an ultracentrifugal grinder to obtain the collagen fibers.
The further technical proposal is that the fiber for papermaking is selected from one or more of wood pulp fiber, cotton pulp fiber, bamboo pulp fiber or hemp pulp fiber.
The invention also provides a preparation method of the paper cigarette filter stick containing the collagen fiber, which comprises the following steps:
(1) preparing collagen fiber paper;
(2) and (3) performing conventional forming process on the collagen fiber paper by adopting a paper filter stick, and performing rolling, wrapping and forming to obtain the paper cigarette filter stick containing collagen fibers.
The further technical scheme is that the preparation method of the collagen fiber paper in the step (1) comprises the following steps: mixing collagen fibers and fibers for papermaking, adding an auxiliary agent for papermaking, stirring to form slurry, and then carrying out sheet making, squeezing and drying according to conventional wet papermaking to obtain the collagen fiber paper, wherein the key physical indexes are as follows: quantitative determination of 36.0. + -. 1g/m2The width is 22.0 +/-2 cm, the thickness is 0.10 +/-0.01 cm, and the tensile strength is 16.0 +/-1N/15 mm.
The further technical proposal is that the hardness index of the paper cigarette filter stick is controlled to be 90 plus or minus 2 percent, and the suction resistance index is 400mmH2O。
The invention has the following beneficial effects: the collagen fiber of the collagen fiber paper prepared by the invention is prepared by the second layer of cowhide, has wide sources, proper price, safety and reliability, belongs to natural products, has good biodegradability, is safe and environment-friendly, and greatly improves the added value of products of animal biomass resources such as the second layer of cowhide when being used for cigarette filter rods; the compatibility of the collagen fiber and other fibers for papermaking is good, and the existing pulping and papermaking process is not influenced. The prepared original fiber paper has good quality, the problem of poor performance of paper made by using plant fibers alone can be solved, the processing performance of the paper is improved, the filtering performance and the adsorption performance of the paper filter stick containing the original fiber paper prepared by the original fiber paper are good, tar, harmful ingredients, heavy metal ions and the like in smoke can be effectively intercepted, and the smoking safety of cigarettes is improved. The invention uses the collagen fiber for preparing the paper for the cigarette filter stick, breaks through the tradition that the fiber for papermaking is basically plant fiber, and provides a new idea for the development of the paper filter stick industry. After the collagen fiber is added into the paper filter stick, due to the special fiber structure characteristics and molecular structure characteristics, the tar content and the harmful component content in the cigarette smoke can be obviously reduced, the sweet feeling of the cigarette is improved, and the sensory quality of the cigarette is improved.
Detailed Description
Example 1:
(1) preparing collagen fibers: liming: cutting a second layer of ash sheet of the cowhide into pieces with the thickness of 1.5mm, putting the pieces into a rotary drum, adding water accounting for 100-200 percent of the weight of the cowhide and slaked lime accounting for 1-4 percent of the weight of the cowhide, and rotating the pieces for 12-18 hours at normal temperature; deliming: controlling water, adding water with the weight of 200% of the weight of the ash bark and ammonium sulfate with the weight of 0.1% -0.5%, and rotating for 20-24 hours; controlling water, adding water accounting for 100-150% of the weight of the ash bark, a non-ionic degreasing agent accounting for 0.1-0.5% of the weight of the ash bark and ammonium sulfate accounting for 2-3% of the weight of the ash bark, and rotating for 1.5 hours; softening: controlling water, adding water accounting for 50 percent of the weight of the ash bark, ammonium sulfate accounting for 0.5 percent of the weight of the ash bark and softening enzyme accounting for 1.0 to 1.5 percent of the weight of the ash bark, and rotating for 30 minutes; washing with water: controlling water, adding 200-300% of water, and washing for 20 minutes; demineralizing: controlling water, adding deionized water accounting for 100% of the weight of the ash skin, and rotating for 4-6 hours; and (3) dehydrating: controlling water, adding absolute ethyl alcohol with the weight of 100 percent of the weight of the gray scale, rotating for 2 hours, and carrying out the operation for several times, wherein the absolute ethyl alcohol is replaced every 2 hours until the dehydration requirement is met; and (3) drying: cutting the dehydrated skin into small skin blocks of 1cm x 1cm, placing in a low-temperature oven, and drying at 50 deg.C to oven dry; crushing, raising: and (3) crushing and raising the small leather blocks by using a physical mechanical method to obtain the required collagen fibers, wherein the fiber length is 20-30 mm.
(2) Preparing collagen fiber paper: by adopting the existing papermaking pulping process, 90 weight percent of collagen fiber and 10 weight percent of other papermaking fibers (purchased from the market) are mixed, and then added with water, dispersant, adhesive and other papermaking additives and stirred into pulp. And (3) adopting the existing papermaking process to papermaking according to the specifications such as the paper thickness required by the paper for the cigarette filter stick, and the like, so as to obtain the collagen fiber paper.
(3) Preparing a paper filter stick: and (3) performing conventional forming process on the collagen fiber paper by adopting a paper filter stick, and performing rolling, wrapping and forming to obtain the paper cigarette filter stick containing collagen fibers.
Example 2:
(1) preparing collagen fibers: liming: cutting a second layer of ash sheet of the cowhide into pieces with the thickness of 1.5mm, putting the pieces into a rotary drum, adding water accounting for 100-200 percent of the weight of the cowhide and slaked lime accounting for 1-4 percent of the weight of the cowhide, and rotating the pieces for 12-18 hours at normal temperature; deliming: controlling water, adding water with the weight of 200% of the weight of the ash bark and ammonium sulfate with the weight of 0.1% -0.5%, and rotating for 20-24 hours; controlling water, adding water accounting for 100-150% of the weight of the ash bark, a non-ionic degreasing agent accounting for 0.1-0.5% of the weight of the ash bark and ammonium sulfate accounting for 2-3% of the weight of the ash bark, and rotating for 1.5 hours; softening: controlling water, adding water accounting for 50 percent of the weight of the ash bark, ammonium sulfate accounting for 0.5 percent of the weight of the ash bark and softening enzyme accounting for 1.0 to 1.5 percent of the weight of the ash bark, and rotating for 30 minutes; washing with water: controlling water, adding 200-300% of water, and washing for 20 minutes; demineralizing: controlling water, adding deionized water accounting for 100% of the weight of the ash skin, and rotating for 4-6 hours; and (3) dehydrating: controlling water, adding absolute ethyl alcohol with the weight of 100 percent of that of the ash bark, rotating for 2 hours, and carrying out the operation for several times, and replacing the absolute ethyl alcohol every 2 hours until the dehydration requirement is met; and (3) drying: cutting the dehydrated skin into small skin blocks of 1cm x 1cm, placing in a low-temperature oven, and drying at 50 deg.C to oven dry; crushing, raising: and (3) crushing and raising the small leather blocks by using a physical mechanical method to obtain the required collagen fibers, wherein the fiber length is 20-30 mm.
By adopting the existing papermaking pulping process, 10 weight percent of collagen fiber and 90 weight percent of other papermaking fibers (purchased from the market) are mixed, and then added with water, dispersant, adhesive and other papermaking additives and stirred into pulp. And (3) adopting the existing papermaking process to papermaking according to the specifications such as the paper thickness required by the paper for the cigarette filter stick, and the like, so as to obtain the collagen fiber paper.
(3) Preparing a paper filter stick: and (3) performing conventional forming process on the collagen fiber paper by adopting a paper filter stick, and performing rolling, wrapping and forming to obtain the paper cigarette filter stick containing collagen fibers.
Example 3:
(1) preparing collagen fibers: liming: cutting a second layer of ash sheet of the cowhide into pieces with the thickness of 1.5mm, putting the pieces into a rotary drum, adding water accounting for 100-200 percent of the weight of the cowhide and slaked lime accounting for 1-4 percent of the weight of the cowhide, and rotating the pieces for 12-18 hours at normal temperature; deliming: controlling water, adding water with the weight of 200% of the weight of the ash bark and ammonium sulfate with the weight of 0.1% -0.5%, and rotating for 20-24 hours; controlling water, adding water accounting for 100-150% of the weight of the ash bark, a non-ionic degreasing agent accounting for 0.1-0.5% of the weight of the ash bark and ammonium sulfate accounting for 2-3% of the weight of the ash bark, and rotating for 1.5 hours; softening: controlling water, adding water accounting for 50 percent of the weight of the ash bark, ammonium sulfate accounting for 0.5 percent of the weight of the ash bark and softening enzyme accounting for 1.0 to 1.5 percent of the weight of the ash bark, and rotating for 30 minutes; washing with water: controlling water, adding 200-300% of water, and washing for 20 minutes; demineralizing: controlling water, adding deionized water accounting for 100% of the weight of the ash skin, and rotating for 4-6 hours; and (3) dehydrating: controlling water, adding absolute ethyl alcohol with the weight of 100 percent of that of the ash bark, rotating for 2 hours, and carrying out the operation for several times, and replacing the absolute ethyl alcohol every 2 hours until the dehydration requirement is met; and (3) drying: cutting the dehydrated skin into small skin blocks of 1cm x 1cm, placing in a low-temperature oven, and drying at 50 deg.C to oven dry; crushing, raising: and (3) crushing and raising the small leather blocks by using a physical mechanical method to obtain the required collagen fibers, wherein the fiber length is 20-30 mm.
The existing papermaking pulping process is adopted, 50 weight percent of collagen fiber and 50 weight percent of other papermaking fibers (purchased from the market) are mixed, and then water, a dispersant, an adhesive and other papermaking auxiliary agents are added and stirred into pulp. And (3) adopting the existing papermaking process to papermaking according to the specifications such as the paper thickness required by the paper for the cigarette filter stick, and the like, so as to obtain the collagen fiber paper.
(3) Preparing a paper filter stick: and (3) performing conventional forming process on the collagen fiber paper by adopting a paper filter stick, and performing rolling, wrapping and forming to obtain the paper cigarette filter stick containing collagen fibers.
Example 4
The collagen fiber paper filter stick prepared in the embodiment 1-3 is butted with a cigarette tobacco stick to prepare a test cigarette, and a sensory evaluation experiment is carried out, wherein the experimental results are as follows:
TABLE 1 sensory test results
Figure BDA0001855969420000071
As can be seen from Table 1, the cigarettes prepared in examples 1 to 3 have mellow and soft smoke, small irritation, no generation of strange miscellaneous gas, greatly improved sweet feeling, stronger lasting fragrance retention capability and improved sensory quality.
Example 5
The collagen fiber paper filter sticks prepared in the examples 1 to 3 are butted with cigarette tobacco shred sticks to prepare test cigarettes, the smoke components and the contents of seven harmful components are analyzed, and the analysis results are as follows:
TABLE 2 conventional flue gas analysis
Figure BDA0001855969420000072
Figure BDA0001855969420000081
TABLE 3 analysis of seven harmful ingredients
Figure BDA0001855969420000082
As can be seen from the data in tables 2 and 3, after the collagen fiber paper filter stick is used, the tar reduction effect is obvious, the content of other harmful components is reduced in different degrees, the harmfulness index is reduced, and the cigarette safety is improved.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.

Claims (5)

1. The paper cigarette filter stick containing the collagen fiber is characterized by comprising the following raw materials in parts by weight, 1-90% of the collagen fiber and 10-99% of the fiber for papermaking; the preparation method of the collagen fiber comprises the following steps: the method comprises the following steps of liming, deliming, softening, washing, demineralizing, dehydrating, drying and crushing the raw materials, and specifically comprises the following steps: (1) liming: cutting a second layer of kraft into sheets with the thickness of 1-2 mm, putting the sheets into a rotary drum, adding water accounting for 100-200% of the weight of the kraft and slaked lime accounting for 1-4% of the weight of the kraft, and rotating the sheets for 12-18 hours at normal temperature; (2) deliming: controlling water, adding water with the weight of 200% of the ash bark and ammonium sulfate with the weight of 0.1% -0.5%, and rotating for 20-24 hours; controlling water, adding water accounting for 100-150% of the weight of the ash bark, a non-ionic degreasing agent accounting for 0.1-0.5% of the weight of the ash bark and ammonium sulfate accounting for 2-3% of the weight of the ash bark, and rotating for 1.5 hours; (3) softening: controlling water, adding water accounting for 50% of the weight of the ash bark, ammonium sulfate accounting for 0.5% of the weight of the ash bark and softening enzyme accounting for 1.0% -1.5% of the weight of the ash bark, and rotating for 30 minutes; (4) washing with water: controlling water, adding 200-300% of water, and washing for 20 minutes; (5) demineralizing: controlling water, adding deionized water accounting for 100% of the weight of the ash skin, and rotating for 4-6 hours; (6) and (3) dehydrating: controlling water, adding absolute ethyl alcohol with the weight of 100 percent of that of the ash bark, rotating for 2 hours, and carrying out the operation for several times, and replacing the absolute ethyl alcohol every 2 hours until the dehydration requirement is met; (7) and (3) drying: cutting the dehydrated skin into small skin blocks of 1cm x 1cm, placing in a low-temperature oven, and drying at 50 deg.C to oven dry; (8) crushing: and (4) crushing the oven-dried small leather blocks into leather powder of 40 mu m by using an ultracentrifugal grinder to obtain the collagen fibers.
2. The paper cigarette filter rod containing collagen fibers according to claim 1, wherein the papermaking fibers are selected from one or more of wood pulp fibers, cotton pulp fibers, bamboo pulp fibers or hemp pulp fibers.
3. A method of making a paper cigarette filter rod containing collagen fibers according to claim 1 comprising the steps of:
(1) preparing collagen fiber paper;
(2) and (3) performing conventional forming process on the collagen fiber paper by adopting a paper filter stick, and performing rolling, wrapping and forming to obtain the paper cigarette filter stick containing collagen fibers.
4. The method for preparing a paper cigarette filter rod containing collagen fibers according to claim 3, wherein the method for preparing the collagen fiber paper in the step (1) comprises the following steps: mixing collagen fibers and fibers for papermaking, adding an auxiliary agent for papermaking, stirring to form slurry, and then carrying out sheet making, squeezing and drying according to conventional wet papermaking to obtain the collagen fiber paper, wherein the key physical indexes are as follows: quantitative determination of 36.0. + -. 1g/m2The width is 22.0 +/-2 cm, the thickness is 0.10 +/-0.01 cm, and the tensile strength is 16.0 +/-1N/15 mm.
5. The method for preparing the paper cigarette filter stick containing the collagen fiber according to claim 3, wherein the hardness index of the paper cigarette filter stick is controlled to be 90 +/-2%, and the suction resistance index is 400mmH2O。
CN201811314759.1A 2018-11-06 2018-11-06 Paper cigarette filter stick containing collagen fibers and preparation method thereof Active CN109403129B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101946852A (en) * 2010-09-02 2011-01-19 温州佩蒂宠物用品有限公司 Collagenous fiber bonded leather and preparation method thereof
CN102154950A (en) * 2011-01-25 2011-08-17 云南瑞升烟草技术（集团）有限公司 Specialty paper containing aftergrowth protein based fiber and preparation method thereof
CN106418689A (en) * 2016-09-28 2017-02-22 北京科技大学 Cigarette filter tip and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101946852A (en) * 2010-09-02 2011-01-19 温州佩蒂宠物用品有限公司 Collagenous fiber bonded leather and preparation method thereof
CN102154950A (en) * 2011-01-25 2011-08-17 云南瑞升烟草技术（集团）有限公司 Specialty paper containing aftergrowth protein based fiber and preparation method thereof
CN106418689A (en) * 2016-09-28 2017-02-22 北京科技大学 Cigarette filter tip and preparation method thereof

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