CN111395047A - Self-permeation fragrance-retaining tipping paper - Google Patents

Abstract

A self-permeable aroma-retaining tipping paper belongs to the technical field of tipping paper, and the production method comprises the steps of pulping tobacco stem pulp, needle leaf pulp and broad leaf pulp by a double-disc mill respectively, uniformly mixing the tobacco stem pulp, the needle leaf pulp and the broad leaf pulp in proportion, adding calcium carbonate and melamine resin, and uniformly mixing to prepare papermaking pulp; diluting the papermaking pulp with deionized water, sequentially adding polyacrylamide and alkyl ketene dimer, mixing with hydrogen peroxide, papermaking and forming through a cylinder paper machine, squeezing and dehydrating the formed paper, drying, and treating the surface performance of the paper with a surfactant during drying; then, finishing the surface of the paper, and then coiling and packaging to obtain self-permeable aroma-retaining tipping paper; the cigarette stalk pulp is adopted in the raw material of the tipping paper, so that the tipping paper has natural tobacco fragrance, the adverse effect of static charge can be avoided by adopting deionized water and hydrogen peroxide, the pore distribution is uniform, the pore diameter is uniform, and the quality of the tipping paper is improved.

Description

Self-permeation fragrance-retaining tipping paper

Technical Field

The invention relates to the technical field of tipping paper, in particular to self-permeation fragrance-retaining tipping paper.

Background

The tipping paper is a packing material for cigarettes, is used for connecting filter tip sections and tobacco shred sections in the cigarettes and is used as the outer package of the filter tip rod at the same time.

The existing tipping paper is partially perforated, so that ambient air can enter a filter tip during smoking, and is mixed with smoke generated by a tobacco leaf segment to dilute mainstream smoke, so that the amount of sucked tar is relatively reduced; this is currently the most widely used and most effective tar reduction technique.

Due to the fact that the tipping paper needs to be punched, the cost is high. Thus, patent document CN103774487A discloses a self-permeable tipping base paper, a production method and applications thereof, wherein the production method comprises the following processing steps: A. pulping the commercial pulp board and grinding the pulp into thick liquid; B. adding a dispersant, a wet strength agent and a sizing agent additive; C. forming and dewatering on the net, wherein when the net is laid, a circular net and an inclined net are adopted for parallel feeding, and composite forming is carried out; D. drying treatment; E. calendaring treatment; F. and (6) coiling and packaging. Wherein, the concentration of the commercial pulp on the cylinder screen is 0.1-0.5%, and the concentration of the commercial pulp on the inclined screen is 0.01-0.05%. The commercial pulp board adopts bleached sulfate softwood pulp and bleached sulfate hardwood pulp, the ratio is 3-4:1-2, and the pulp grinding degree is 10-30 DEG SR. The self-permeable tipping base paper produced by the method has the advantages that the air permeability after printing is controlled to be equivalent to the air permeability standard of the original laser punching, the self-permeable tipping base paper can be directly used, the laser punching is not needed, the production cost of the downstream process is reduced, the natural and uniform ventilation can be realized, the tar concentration is reduced, the static combustion rate can be increased, and the product quality is better. The research shows that the product has uneven pore distribution, uneven pore size and good air permeability, but the air permeability is high, so that the fragrance of the cigarette is easy to lose because of no fragrance-keeping function.

Disclosure of Invention

The invention aims to solve the technical problem of providing a self-permeation fragrance-retaining tipping paper with self-contained cigarette fragrance, uniform pore size and uniform pore distribution so as to improve the quality of the tipping paper.

In order to solve the technical problem, the technical scheme adopted by the invention is a self-permeable and fragrance-retaining tipping paper which is characterized by comprising the following steps.

⑴ pulping the tobacco stalk pulp with double grinding discs, pulping the needle leaf pulp with double grinding discs, the pulping concentration is 35-100 degrees SR, the wet weight is 2-3g, pulping the needle leaf pulp with double grinding discs, the pulping concentration is 65-550 degrees SR, the wet weight is 7-9g, and pulping the broad leaf pulp with double grinding discs, the pulping concentration is 15-150 degrees SR, and the wet weight is 1-2 g.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp, broad leaf pulp, etc. at a weight ratio of 10-15%, 25-30%, 60-65% to obtain a mixed pulp.

⑶ adding calcium carbonate 25-35% of the total weight and melamine resin 1.1-1.5% of the total weight into the mixed slurry, and mixing uniformly to obtain papermaking slurry.

⑷ diluting the papermaking pulp with deionized water to a net-feeding concentration of 0.3-0.8 wt%, then adding 0.2-0.6 wt% polyacrylamide and 1-2 wt% alkyl ketene dimer in sequence and mixing them uniformly, then forming by a cylinder paper machine, and making the formed paper sheet have natural pores with uniform interweaving and distribution.

⑸ dewatering the formed paper sheet by pressing, drying, coating surface agent by surface agent applying machine to treat the surface property of paper sheet, wherein the surface agent is prepared by adding oxidized starch and acrylic resin into deionized water and mixing uniformly, wherein the weight ratio of oxidized starch, acrylic resin, deionized water and hydrogen peroxide is 20-25%, 0.3-0.5% and 70-90%.

⑹ finishing the surface of the dried paper by a soft calender, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

The further proposal is that the papermaking pulp is diluted and added with polyacrylamide and alkyl ketene dimer to be mixed evenly in the step ⑷, then hydrogen peroxide with the weight ratio of 0.5 to 0.7 percent is added to be mixed evenly, and then the mixture is made and formed by a cylinder paper machine.

The further scheme is that when the surface agent is prepared in the ⑸ step, oxidized starch and acrylic resin are added into deionized water to be uniformly mixed, and then hydrogen peroxide is added to be uniformly mixed to obtain the surface agent, wherein the weight ratio of the oxidized starch to the acrylic resin to the deionized water to the hydrogen peroxide is 20-25%, 0.3-0.5%, 60-80% and 2-3%.

The tobacco stem pulp is prepared by the following method.

⑴ putting the cleaned tobacco stalk raw material into a moistening and fermenting tank for moistening and fermenting, wherein the weight ratio of water to tobacco stalk in the moistening and fermenting tank is 1:1, the water temperature is 67-77 deg.C, and the moistening and fermenting time is 50-60min to obtain tobacco stalk material.

⑵, adding tobacco stalk materials into a pulping machine, adjusting the rotating speed of the pulping machine to 150-500 rpm, sequentially arranging six extrusion-grinding tearing-kneading areas which are respectively a first extrusion-grinding area, a second extrusion-grinding area, a third tearing area, a fourth tearing area, a fifth kneading area and a sixth kneading area, wherein the blade distances of the six extrusion-grinding tearing-kneading areas are respectively 16-17mm, 14-15mm, 12-13mm, 10-11mm, 8-9mm and 7-8mm, pulping for 75-90min, and concentrating the pulp concentration to 30% -40% to obtain tobacco stalk pulp.

The invention has the advantages that the tobacco stalk pulp is adopted in the raw material of the tipping paper, so that the tipping paper has natural tobacco fragrance, and even if the tipping paper has a self-permeation function, the fragrance of the wrapped tobacco shreds is diffused, the tipping paper also has a stronger cigarette effect; the papermaking pulp is diluted by deionized water and is combined with hydrogen peroxide, so that the influence of charges can be avoided, the dispersing agent and AKD are uniformly dispersed, and further, the pores on the paper sheet are uniformly distributed, and the pore diameter is uniform; the surface agent is mixed with the deionized water and the hydrogen peroxide to oxidize the starch and the acrylic resin, so that the adverse effect of electrostatic charge can be avoided, the surface coating of paper sheets is more uniform, and the quality of tipping paper is improved.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to illustrate the invention but not to limit it further, and should not be construed as limiting the scope of the invention.

All raw materials except the tobacco stalk pulp in the scheme can be purchased from the market.

Example 1 a tobacco stem slurry was prepared.

⑴ selecting qualified tobacco stalk raw materials, cleaning, adding 500kg of cleaned tobacco stalk raw materials and 500kg of clean water into a moistening and fermenting tank for moistening and fermenting, heating the water to 67 ℃, keeping the moistening and fermenting time for 60min after the water reaches a set temperature, and obtaining the tobacco stalk material.

⑵, adding the tobacco stalk material into a pulping machine, wherein the pulping machine is sequentially provided with six squeezing, tearing and kneading areas which are a first squeezing, grinding, second squeezing, third tearing, fourth tearing, fifth kneading and sixth kneading area, the blade intervals of the six squeezing, tearing and kneading areas are 16mm, 14mm, 12mm, 10mm, 8mm and 7mm, the rotating speed of the first squeezing and grinding area is adjusted to be 150rpm, the rotating speed of the second squeezing and grinding area is adjusted to be 200rpm, the rotating speed of the third tearing area is adjusted to be 250rpm, the rotating speed of the fourth tearing area is adjusted to be 350rpm, the rotating speed of the fifth kneading area is adjusted to be 500rpm, the rotating speed of the sixth kneading area is adjusted to be 450rpm, and pulping is carried out for 75 min.

⑶ the slurry was pumped into a holding tank and then concentrated to 30% concentration to give a slurry of tobacco stalks.

Example 2 a tobacco stem slurry was prepared.

⑴ selecting qualified tobacco stalk raw materials, cleaning, adding 1000kg cleaned tobacco stalk raw materials and 1000kg clear water into a moistening and fermenting tank for moistening and fermenting, heating water to 77 deg.C, and maintaining moistening and fermenting for 50min after reaching set temperature to obtain tobacco stalk material.

⑵, adding the tobacco stalk material into a pulping machine, wherein the pulping machine is sequentially provided with six squeezing, tearing and kneading areas which are a first squeezing, grinding, second squeezing, third tearing, fourth tearing, fifth kneading and sixth kneading area, the blade intervals of the six squeezing, tearing and kneading areas are 17mm, 15mm, 13mm, 11mm, 9mm and 8mm, the rotating speed of the first squeezing and grinding area is adjusted to be 175rpm, the rotating speed of the second squeezing and grinding area is adjusted to be 225rpm, the rotating speed of the third tearing area is adjusted to be 275rpm, the rotating speed of the fourth tearing area is adjusted to be 375rpm, the rotating speed of the fifth kneading area is adjusted to be 475rpm, the rotating speed of the sixth kneading area is adjusted to be 425rpm, and pulping is carried out for 90 min.

⑶ the slurry is pumped into a slurry collection tank, and then the concentration of the slurry is concentrated to 40% to obtain tobacco stalk slurry.

Example 3, tipping paper was prepared.

⑴ pulping the tobacco stalk pulp with 35 ° SR and wet weight of 2g, pulping the needle leaf pulp with 65 ° SR and wet weight of 7g, and pulping the broad leaf pulp with 15 ° SR and wet weight of 1 g.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp and broad leaf pulp uniformly according to the weight ratio of 10% to 25% to 60% to obtain the mixed pulp.

⑶ calcium carbonate accounting for 25 percent of the total weight of the mixed pulp and melamine resin accounting for 1.1 percent of the total weight of the mixed pulp are added and evenly mixed to prepare papermaking pulp.

⑷ diluting the paper pulp with deionized water to a net density of 0.3 wt%, then adding 0.2 wt% polyacrylamide and 1 wt% alkyl ketene dimer in sequence, mixing uniformly, and making into paper by a cylinder machine, wherein the paper making and forming process adopts a double cylinder machine for composite forming, the bottom net is 12 mesh, and the face net is 90 mesh.

⑸ dewatering the formed paper sheet by pressing, drying to make the water content of the dried paper sheet reach 5%, coating surface agent by a surface agent applying machine to treat the surface performance of the paper sheet, wherein the coating dosage of the surface agent is 0.7 g/square meter, the surface agent is prepared by adding oxidized starch and acrylic resin into deionized water and mixing uniformly, wherein the weight ratio of the oxidized starch, the acrylic resin and the deionized water is 20% to 0.3% to 70%.

⑹ finishing the surface of the dried paper by a soft calender under the conditions of 50kN/m pressure and 50 ℃ roll surface temperature to ensure that the smoothness of the paper is 100s and the smoothness of the reverse side is 30s, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

Through detection, the self-permeation fragrance-retaining tipping paper has the quantitative content of 35 g/square meter, the air permeability of 180CU, the average pore diameter of 15-18 mu m, uniform interweaving of pores and uniform distribution.

Example 4, tipping paper was prepared.

⑴ pulping the tobacco stalk pulp with 65 ° SR and wet weight of 2.5g by double grinding disc, pulping the needle leaf pulp with 315 ° SR and wet weight of 8g by double grinding disc, and pulping the broad leaf pulp with 80 ° SR and wet weight of 1.5g by double grinding disc.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp and broad leaf pulp uniformly according to the weight ratio of 12.5% to 27.5% to 62.5% to obtain the mixed pulp.

⑶ calcium carbonate accounting for 30 percent of the total weight of the mixed pulp and melamine resin accounting for 1.3 percent of the total weight of the mixed pulp are added and evenly mixed to prepare papermaking pulp.

⑷ diluting the paper pulp with deionized water to a weight concentration of 0.55% for wire feeding, then adding 0.4% polyacrylamide and 1.5% alkyl ketene dimer in sequence, mixing uniformly, and then making and forming by a cylinder machine, wherein a double cylinder machine is adopted for composite forming during paper making and forming, the bottom screen is 13 meshes, and the surface screen is 95 meshes.

⑸, dewatering the formed paper sheet by pressing, drying and making the water content of the dried paper sheet reach about 7.5%, coating a surface agent by a surface agent applying machine to treat the surface performance of the paper sheet when drying, wherein the coating dosage of the surface agent is 0.8 g/square meter, the surface agent is prepared by adding oxidized starch and acrylic resin into deionized water and mixing uniformly, wherein the weight ratio of the oxidized starch, the acrylic resin and the deionized water is 22.5% to 0.4% to 80%.

⑹ finishing the surface of the dried paper by a soft calender under the conditions of 65kN/m pressure and 55 ℃ roll surface temperature to ensure that the smoothness of the paper is 150s and the smoothness of the reverse side is 40s, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

Through detection, the self-permeation fragrance-retaining tipping paper has the quantitative content of 35 g/square meter, the air permeability of 220CU, the average pore diameter of 16-19 mu m, uniform interweaving of pores and uniform distribution.

Example 5, tipping paper was prepared.

⑴ pulping the tobacco stalk pulp with double millstones, the pulping concentration is 100 ° SR, the wet weight is 3g, pulping the needle leaf pulp with double millstones, the pulping concentration is 550 ° SR, the wet weight is 9g, pulping the broad leaf pulp with double millstones, the pulping concentration is 150 ° SR, and the wet weight is 2 g.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp and broad leaf pulp uniformly according to the weight ratio of 15% to 30% to 65% to prepare the mixed pulp.

⑶ calcium carbonate accounting for 35 percent of the total weight of the mixed pulp and melamine resin accounting for 1.5 percent of the total weight of the mixed pulp are added and evenly mixed to prepare papermaking pulp.

⑷ diluting the paper pulp with deionized water to an upper wire concentration of 0.8 wt%, then adding 0.6 wt% polyacrylamide and 2 wt% alkyl ketene dimer in sequence, mixing uniformly, and then making and forming with a cylinder machine, wherein a double cylinder machine is adopted for composite forming during paper making, the bottom wire is 14 meshes, and the surface wire is 100 meshes.

⑸ dewatering the formed paper sheet by pressing, drying to make the water content of the dried paper sheet reach 10%, coating surface agent by a surface agent applying machine to treat the surface performance of the paper sheet, wherein the coating dosage of the surface agent is 0.9 g/square meter, the surface agent is prepared by adding oxidized starch and acrylic resin into deionized water and mixing uniformly, wherein the weight ratio of the oxidized starch, the acrylic resin and the deionized water is 25% to 0.5% to 90%.

⑹ finishing the surface of the dried paper by a soft calender under the conditions of 70kN/m pressure and 60 ℃ roll surface temperature to ensure that the smoothness of the front surface of the paper is 200s and the smoothness of the back surface is 50s, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

Through detection, the self-permeation fragrance-retaining tipping paper has the quantitative content of 35 g/square meter, the air permeability of 250CU, the average pore diameter of 17-20 mu m, uniform interweaving of pores and uniform distribution.

Example 6, tipping paper was prepared.

⑴ pulping the tobacco stalk pulp with 35 ° SR and wet weight of 2g, pulping the needle leaf pulp with 65 ° SR and wet weight of 7g, and pulping the broad leaf pulp with 15 ° SR and wet weight of 1 g.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp and broad leaf pulp uniformly according to the weight ratio of 10% to 25% to 60% to obtain the mixed pulp.

⑶ calcium carbonate accounting for 25 percent of the total weight of the mixed pulp and melamine resin accounting for 1.1 percent of the total weight of the mixed pulp are added and evenly mixed to prepare papermaking pulp.

⑷ diluting the paper pulp with deionized water to a net density of 0.3 wt%, sequentially adding 0.2 wt% polyacrylamide and 1 wt% alkyl ketene dimer, mixing, adding 0.5 wt% hydrogen peroxide, mixing, and making with a cylinder paper machine, wherein the cylinder paper machine is used for compound molding, the bottom net is 12 mesh, and the face net is 90 mesh.

⑸, squeezing the formed paper sheet to dewater, then drying, and making the water content of the dried paper sheet reach 5%, coating a surface agent by a surface agent applying machine to treat the surface performance of the paper sheet, wherein the coating dosage of the surface agent is 0.7 g/square meter, the surface agent is a composite mixture obtained by adding oxidized starch and acrylic resin into deionized water to mix uniformly, and then adding hydrogen peroxide to mix uniformly, wherein the weight ratio of the oxidized starch, the acrylic resin, the deionized water and the hydrogen peroxide is 20%: 0.3%: 60%: 2%.

⑹ finishing the surface of the dried paper by a soft calender under the conditions of 50kN/m pressure and 50 ℃ roll surface temperature to ensure that the smoothness of the paper is 100s and the smoothness of the reverse side is 30s, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

Through detection, the self-permeation fragrance-retaining tipping paper has the advantages of quantitative content of 35 g/square meter, air permeability of 180CU, average pore diameter of 15-17 mu m, uniform interweaving of pores and uniform distribution.

Example 7, tipping paper was prepared.

⑴ pulping the tobacco stalk pulp with 65 ° SR and wet weight of 2.5g by double grinding disc, pulping the needle leaf pulp with 315 ° SR and wet weight of 8g by double grinding disc, and pulping the broad leaf pulp with 80 ° SR and wet weight of 1.5g by double grinding disc.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp and broad leaf pulp uniformly according to the weight ratio of 12.5% to 27.5% to 62.5% to obtain the mixed pulp.

⑶ calcium carbonate accounting for 30 percent of the total weight of the mixed pulp and melamine resin accounting for 1.3 percent of the total weight of the mixed pulp are added and evenly mixed to prepare papermaking pulp.

⑷ diluting the paper pulp with deionized water to a weight concentration of 0.55% for wire netting, then sequentially adding 0.4% by weight of polyacrylamide and 1.5% by weight of alkyl ketene dimer, mixing uniformly, then adding 0.6% by weight of hydrogen peroxide, mixing uniformly, and then performing paper making and forming through a cylinder paper machine, wherein a double cylinder paper machine is adopted for composite forming during paper making and forming, the bottom net is 13 meshes, and the surface net is 95 meshes.

⑸, squeezing the formed paper sheet to dewater, then drying, and making the water content of the dried paper sheet reach about 7.5%, coating a surface agent by a surface agent applying machine to treat the surface performance of the paper sheet, wherein the coating dosage of the surface agent is 0.8 g/square meter, the surface agent is a composite mixture obtained by adding oxidized starch and acrylic resin into deionized water to mix uniformly, and then adding hydrogen peroxide to mix uniformly, wherein the weight ratio of the oxidized starch, the acrylic resin, the deionized water and the hydrogen peroxide is 22.5%: 0.4%: 70%: 2.5%.

⑹ finishing the surface of the dried paper by a soft calender under the conditions of 65kN/m pressure and 55 ℃ roll surface temperature to ensure that the smoothness of the paper is 150s and the smoothness of the reverse side is 40s, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

Through detection, the self-permeation fragrance-retaining tipping paper has the quantitative content of 35 g/square meter, the air permeability of 220CU, the average pore diameter of 16-18 mu m, uniform interweaving of pores and uniform distribution.

Example 8, tipping paper was prepared.

⑴ pulping the tobacco stalk pulp with double millstones, the pulping concentration is 100 ° SR, the wet weight is 3g, pulping the needle leaf pulp with double millstones, the pulping concentration is 550 ° SR, the wet weight is 9g, pulping the broad leaf pulp with double millstones, the pulping concentration is 150 ° SR, and the wet weight is 2 g.

⑵ mixing the processed tobacco stem pulp, needle leaf pulp and broad leaf pulp uniformly according to the weight ratio of 15% to 30% to 65% to prepare the mixed pulp.

⑶ calcium carbonate accounting for 35 percent of the total weight of the mixed pulp and melamine resin accounting for 1.5 percent of the total weight of the mixed pulp are added and evenly mixed to prepare papermaking pulp.

⑷ diluting the paper pulp with deionized water to a net density of 0.8 wt%, then adding 0.6 wt% polyacrylamide and 2 wt% alkyl ketene dimer in sequence, mixing uniformly, adding 0.7 wt% hydrogen peroxide, mixing uniformly, and then making and forming with a cylinder paper machine, wherein a double cylinder paper machine is adopted for composite forming during making and forming, the bottom net is 14 meshes, and the face net is 100 meshes.

⑸, squeezing the formed paper sheet to dewater, then drying, and making the water content of the dried paper sheet reach 10%, coating a surface agent by a surface agent applying machine to treat the surface performance of the paper sheet, wherein the coating dosage of the surface agent is 0.9 g/square meter, the surface agent is a composite mixture obtained by adding oxidized starch and acrylic resin into deionized water to mix uniformly, and then adding hydrogen peroxide to mix uniformly, wherein the weight ratio of the oxidized starch, the acrylic resin, the deionized water and the hydrogen peroxide is 25%: 0.5%: 80%: 3%.

⑹ finishing the surface of the dried paper by a soft calender under the conditions of 70kN/m pressure and 60 ℃ roll surface temperature to ensure that the smoothness of the front surface of the paper is 200s and the smoothness of the back surface is 50s, and then coiling and packaging to obtain the self-permeation fragrance-retaining tipping paper.

Through detection, the self-permeation fragrance-retaining tipping paper has the quantitative content of 35 g/square meter, the air permeability of 250CU, the average pore diameter of 17-19 mu m, uniform interweaving of pores and uniform distribution.

In the above examples 3, 4, and 5, because the tobacco stalk pulp is used as the raw material of the tipping paper, the prepared tipping paper has natural cigarette fragrance, because the deionized water is used to dilute the papermaking pulp and net-loading, electrostatic interference is avoided, the pore distribution on the paper sheet is uniform, the pore diameter is uniform, and because the deionized water is used to mix oxidized starch and acrylic resin to prepare the surface agent, the adverse effect of electrostatic charge can be avoided, the surface coating of the paper sheet is uniform, and the quality of the tipping paper is effectively improved; the tipping paper has natural cigarette fragrance, although the pores can disperse the fragrance in the wrapped tobacco shreds, the tipping paper has the cigarette fragrance, so that the overall fragrance of the cigarette can be maintained to a certain degree.

In the above examples 6, 7 and 8, since hydrogen peroxide is further added in the steps ⑷ and ⑸, electrostatic interference can be better avoided, so that the pores on the paper sheet are uniformly distributed, the pore diameter is more uniform, and good air permeability is maintained.

Claims (5)

1. A self-permeable and fragrance-retaining tipping paper is characterized in that the production method comprises the following steps:

⑴ pulping the tobacco stalk pulp with double millstones, wherein the pulping concentration is 35-100 degrees SR, the wet weight is 2-3g, pulping the needle leaf pulp with double millstones, the pulping concentration is 65-550 degrees SR, and the wet weight is 7-9g, pulping the broad leaf pulp with double millstones, the pulping concentration is 15-150 degrees SR, and the wet weight is 1-2 g;

⑵ mixing the processed tobacco stem pulp, needle leaf pulp, broad leaf pulp and other pulp in the weight ratio of 10-15 wt% to 25-30 wt% to 60-65 wt% to obtain mixed pulp;

⑶ adding calcium carbonate 25-35% of the total weight of the mixed pulp and melamine resin 1.1-1.5% of the total weight of the mixed pulp, and mixing uniformly to prepare papermaking pulp;

⑷ diluting the papermaking pulp with deionized water to an upper wire concentration of 0.3-0.8 wt%, sequentially adding 0.2-0.6 wt% of polyacrylamide and 1-2 wt% of alkyl ketene dimer, mixing uniformly, and papermaking and forming with a cylinder paper machine;

⑸, pressing and dehydrating the formed paper sheet, then drying, and coating a surface agent by a surface agent applying machine during drying to treat the surface performance of the paper sheet, wherein the surface agent is a composite mixture obtained by adding oxidized starch and acrylic resin into deionized water, uniformly mixing, adding hydrogen peroxide, and uniformly mixing, wherein the weight ratio of the oxidized starch, the acrylic resin, the deionized water and the hydrogen peroxide is 20-25%, 0.3-0.5%, and 70-90%;

⑹ the dried paper surface is finished by a soft calender and then wound up and packaged.

2. The self-permeable aroma-preserving tipping paper according to claim 1, characterized in that in step ⑷, the papermaking pulp is diluted and added with polyacrylamide and alkyl ketene dimer, and after mixing uniformly, 0.5-0.7% by weight of hydrogen peroxide is added and mixed uniformly, and then the paper is made and formed by a cylinder machine.

3. The self-permeating cigarette-protecting tipping paper according to claim 1 or 2, characterized in that when the surface agent is prepared in the ⑸ step, oxidized starch and acrylic resin are added into deionized water and mixed uniformly, and then hydrogen peroxide is added and mixed uniformly to obtain the surface agent, wherein the weight ratio of the oxidized starch, the acrylic resin, the deionized water and the hydrogen peroxide is 20-25%, 0.3-0.5%, 60-80% and 2-3%.

4. The self-permeable and fragrance-retaining tipping paper according to claim 3, characterized in that the coating amount of the surface agent is 0.7 to 0.9g per square meter.

5. The self-permeable aroma-preserving tipping paper according to claims 1-4, wherein the tobacco stalk pulp is prepared by the following method:

⑴ putting the cleaned tobacco stalk raw material into a moistening and fermenting tank for moistening and fermenting, wherein the weight ratio of water to tobacco stalk in the moistening and fermenting tank is 1:1, the water temperature is 67-77 ℃, and the moistening and fermenting time is 50-60min, so as to obtain tobacco stalk material;

⑵, adding tobacco stalk materials into a pulping machine, adjusting the rotating speed of the pulping machine to 150-500 rpm, sequentially arranging six extrusion-grinding tearing-kneading areas which are respectively a first extrusion-grinding area, a second extrusion-grinding area, a third tearing area, a fourth tearing area, a fifth kneading area and a sixth kneading area, wherein the blade distances of the six extrusion-grinding tearing-kneading areas are respectively 16-17mm, 14-15mm, 12-13mm, 10-11mm, 8-9mm and 7-8mm, pulping for 75-90min, and concentrating the pulp concentration to 30% -40% to obtain tobacco stalk pulp.