Novel tipping base paper and production process thereof

Abstract

The invention discloses novel tipping base paper which comprises 60-70% of wood pulp, 20-30% of waste paper pulp, 3-5% of quaternary ammonium starch ether, 0.5-1% of polyacrylamide, 0.5-1% of carboxymethyl cellulose, 5-10% of calcium carbonate, 2-5% of talcum powder, 1-2% of rosin size, 0.5-1% of alkyl ketene dimer, 0.5-1% of wet strength agent and a proper amount of dye and preservative. By using the recycled paper pulp, the dependence on raw wood is reduced, and the environmental influence is reduced; and by using the biodegradable additive, the harm to the environment is reduced. In addition, the anti-counterfeiting appearance is formed by using the coating which can be impressed to generate a crack structure, so that the quality and strength of the body paper are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of tipping paper, and specifically relates to a new type of tipping base paper and its production process. Background Art

[0002] Tipping paper, also known as tipping wrap paper, is a packaging material for cigarettes, specifically used by cigarette factories as the outer packaging of cigarette filters, belonging to special industrial paper. In recent years, tipping paper has seen great development and innovation in terms of functions and uses. Cigarette factories not only focus on the simple packaging of tipping paper but also pay more attention to its decorative properties, and have higher requirements for the printing aesthetics of tipping paper.

[0003] In recent years, with the increasing call for healthy and environmentally friendly cigarettes, the role of tipping paper is not only limited to packaging and decoration, but also higher requirements are put forward for its health and environmental protection properties and its role in reducing tar and harmful substances in cigarettes. In the existing processing technology of tipping base paper, there are many types of fillers, resulting in insufficient environmental protection. Moreover, with the use of various additives, the strength, appearance quality, and adsorption and harm reduction performance have decreased, leading to a decline in the paper properties of tipping base paper.

[0004] Therefore, it is urgent to study a new type of tipping base paper and its production process. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a new type of tipping base paper and its production process to avoid the troubles of non-environmental protection of fillers in previous tipping papers, as well as insufficient appearance and strength quality.

[0006] To solve the above technical problem, the present invention discloses a new type of tipping base paper, including 60 - 70% wood pulp, 20 - 30% waste paper pulp, 3 - 5% quaternary ammonium starch ether, 0.5 - 1% polyacrylamide, 0.5 - 1% carboxymethyl cellulose, 5 - 10% calcium carbonate, 2 - 5% talcum powder, 1 - 2% rosin size, 0.5 - 1% alkyl ketene dimer, 0.5 - 1% wet strength agent, and appropriate amounts of dyes and preservatives.

[0007] The present invention also discloses a production process of a new type of tipping base paper, including: Step a. Mix the wood pulp and waste paper pulp, and perform beating treatment to make the fibers disperse evenly; Step b. Heat the starch with water at high temperature and high pressure to 90 - 180 °C, gelatinize it, and then put it into a quaternary ammonium ether reagent for reaction to obtain quaternary ammonium starch ether; Step c. Add quaternary ammonium starch ether, polyacrylamide, carboxymethyl cellulose, calcium carbonate, talcum powder, wet strength agent, and appropriate amounts of dyes and preservatives to the pulp, and stir evenly; Step d. Add rosin size and alkyl ketene dimer for sizing treatment; Step e. Feed the slurry into a paper machine, and make tipping paper through forming, pressing, and drying. Step f. Precoat a primer coat and a top coat on the surface of the tipping paper. Step g. After coating and drying, feed it into a calender, and calender it using a combination of a soft roll and a hard roll to obtain the base tipping paper.

[0008] According to an embodiment of the present invention, the primer coat is a PE layer, the top coat has a crack structure, the crack structure is a PP layer and a resin gel attached to the surface of the PP layer, and the resin gel is filled with polypropylene fibers and polypropylene wax inside.

[0009] According to an embodiment of the present invention, the mixing ratio of the resin gel, polypropylene fibers, and polypropylene wax is 8:2:3.

[0010] According to an embodiment of the present invention, the surface of the soft roll has recessed textures.

[0011] According to an embodiment of the present invention, the base tipping paper obtained in step g is slit and printed with ink after slitting.

[0012] According to an embodiment of the present invention, the wood pulp is selected from softwood pulp.

[0013] According to an embodiment of the present invention, the thickness of the top coat is greater than the thickness of the primer coat.

[0014] Compared with the prior art, the present invention can achieve the following technical effects: By using recycled pulp, the dependence on virgin wood is reduced, and the environmental impact is reduced; by using biodegradable additives, the harm to the environment is reduced. In addition, a coating that can be imprinted to produce a crack structure is used to form an anti-counterfeiting appearance, and the quality strength of the base paper is improved.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned technical effects simultaneously. Detailed Embodiment

[0016] The following will describe the embodiments of the present invention in detail in conjunction with examples, so as to fully understand how the present invention applies technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0017] The present invention discloses a novel base tipping paper, including 60 - 70% wood pulp, 20 - 30% waste paper pulp, 3 - 5% quaternary ammonium starch ether, 0.5 - 1% polyacrylamide, 0.5 - 1% carboxymethyl cellulose, 5 - 10% calcium carbonate, 2 - 5% talc powder, 1 - 2% rosin size, 0.5 - 1% alkyl ketene dimer, 0.5 - 1% wet strength agent, and appropriate dyes and preservatives.

[0018] Among them, the quaternary ammonium starch ether is a starch ether with cations. When sizing, it can increase the strength and flexibility of paper, and at the same time has good adhesiveness and the effect of eliminating static electricity. Polyacrylamide can improve the wet strength and dry strength of paper; carboxymethyl cellulose can increase the flexibility and water absorption of paper; calcium carbonate can increase the whiteness and opacity of paper and reduce the formation; talcum powder can improve the smoothness and printing performance of paper; rosin size can improve the waterproof performance of paper; alkyl ketene dimer, as a neutral sizing agent, can improve the waterproofness and durability of paper. The present invention uses recycled pulp, reduces the dependence on virgin wood, and reduces the environmental impact; at the same time, biodegradable additives are used to reduce the harm to the environment.

[0019] The present invention also discloses a production process of a new type of tipping base paper, including: Step a. Mix the wood pulp and waste paper pulp and carry out beating treatment to make the fibers disperse evenly; Step b. Heat the starch with water at high temperature and high pressure to 90-180 °C, gelatinize it and then put it into the quaternary ammonium ether reagent for reaction to obtain the quaternary ammonium starch ether; among them, the quaternary ammonium ether reagent is a cationic reagent, and the gelatinized starch can be cracked and depolymerized by it, and then react with the quaternary ammonium ether reagent to finally obtain the cationic quaternary ammonium starch ether, so as to have the effects of adhesiveness and eliminating static electricity in the subsequent pulping process.

[0020] Step c. Add the quaternary ammonium starch ether, polyacrylamide, carboxymethyl cellulose, calcium carbonate, talcum powder, wet strength agent, and appropriate dyes and preservatives into the pulp and stir evenly; Step d. Add rosin size and alkyl ketene dimer for sizing treatment; Step e. Feed the pulp into a paper machine and make tipping base paper through forming, pressing, and drying; Step f. Precoat the bottom coating and the surface coating on the surface of the tipping base paper; Step g. After coating and drying, send it into a calender and use a combination of soft rolls and hard rolls for calendering to obtain the tipping base paper.

[0021] In a preferred embodiment, the bottom coating is a PE layer, and the surface coating has a crack structure. The crack structure is a PP layer and a resin gel attached to the surface of the PP layer. The resin gel is filled with polypropylene fibers and polypropylene wax inside. The PE bottom coating provides a bottom coat for easy adhesion, and the surface coating is set as a crack structure. During the calendering process, when the roller presses the resin gel, the polypropylene fibers and polypropylene wax inside it will split out. Among them, the polypropylene fibers produce cracks, and the polypropylene wax provides an uneven texture. Finally, the two combine to form irregular cracks, forming an anti-counterfeiting appearance, and the resin gel has strong adhesion, good coating adhesion, and strong surface appearance. The thickness of the surface coating is greater than that of the bottom coating to form a substrate protection.

[0022] Furthermore, the mixing ratio of resin gel, polypropylene fiber and polypropylene wax is 8:2:3, forming a more beautiful surface texture.

[0023] The surface of the soft roller of the present invention has a concave texture, by which the polypropylene wax part is rolled and squeezed to the corresponding concave texture, various tactile textures can be formed, and the adjustability is strong.

[0024] In addition, the kraft paper obtained in step g is cut and printed with ink to further provide color decoration.

[0025] The wood pulp is selected from coniferous wood pulp, which is widely used and environmentally friendly.

[0026] In summary, the present invention reduces dependence on native wood and reduces environmental impact by using recycled pulp, and uses biodegradable additives to reduce environmental harm. In addition, a coating that can be embossed to produce a crack structure is used to form an anti-counterfeiting appearance, and the quality and strength of the base paper is improved.

[0027] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art shall not depart from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A new type of tipping paper, characterized in that: Included by percentage: Wood pulp 60-70%, waste paper pulp 20-30%, quaternary ammonium starch ether 3-5%, polyacrylamide 0.5-1%, carboxymethyl cellulose 0.5-1%, calcium carbonate 5-10%, talc 2-5%, rosin glue 1-2%, alkyl ketene dimer 0.5-1%, wet strength agent 0.5-1%, and appropriate amount of dyes and preservatives.

2. A production process of the new tipping paper as claimed in claim 1, characterized in that: include: Step a. Mixing wood pulp and waste paper pulp and beating the pulp to make the fibers evenly dispersed; Step b. Adding water to starch and heating it to 90-180°C under high temperature and high pressure, and after gelatinization, adding it to a quaternary ammonium ether reagent to react to obtain a quaternary ammonium starch ether; Step c. Add quaternary ammonium starch ether, polyacrylamide, carboxymethyl cellulose, calcium carbonate, talc, wet strength agent, and appropriate amount of dye and preservative to the slurry and stir evenly; Step d. adding rosin glue and alkyl ketene dimer for sizing treatment; Step e. feeding the slurry into a papermaking machine, and forming, pressing and drying the slurry to form tipping paper; Step f. Pre-coating the tipping paper surface with a primer and a topcoat; Step g. After coating and drying, the paper is sent to a calender, and calendered using a combination of soft and hard rollers to obtain tipping base paper.

3. The production process of the new tipping base paper according to claim 2, characterized in that: The bottom coating is a PE layer, the top coating has a crack structure, the crack structure is a PP layer and a resin gel attached to the surface of the PP layer, and the resin gel is filled with polypropylene fibers and polypropylene wax.

4. The production process of the new tipping base paper according to claim 3 is characterized in that: The mixing ratio of the resin gel, polypropylene fiber and polypropylene wax is 8:2:

3.

5. The production process of the new tipping paper according to claim 3, characterized in that: The surface of the soft roller has a concave texture.

6. The production process of the new type of tipping paper according to claim 2, characterized in that: The tipping paper obtained in step g is cut into pieces and then printed with ink.

7. The production process of the new type of tipping paper according to claim 2, characterized in that: The wood pulp is selected from coniferous wood pulp.

8. The production process of the new tipping base paper according to claim 3, characterized in that: The thickness of the top coating layer is greater than that of the base coating layer.