Coating for cigarette packaging paper with tobacco fragrance as well as preparation method and application of coating

Abstract

The invention discloses a coating for cigarette packaging paper with tobacco fragrance as well as a preparation method and application of the coating. The coating is composed of a pigment, an adhesive, tobacco tar and a functional auxiliary agent, and the cigarette packaging paper with the tobacco flavor can be prepared by adopting an off-machine coating or in-machine coating method, a blade coating method, an air blade coating method, a metering rod coating method, a curtain type coating method or other film transfer coating methods. The tobacco tar is used for preparing the coating for the cigarette packaging paper, the cigarette packaging paper produced by utilizing the coating has the natural fragrance of tobacco, and due to the adsorption and slow release effects of pigments in the coating, the fragrance is long-acting and lasting; the adhesive in the coating solves the problem of moisture absorption of paper caused by use of tobacco tar, so that the paper has self-adaptive adjustment performance of'moisture retention and moisture retention '. The identification degree and the anti-counterfeiting function of the product can be improved by utilizing the color characteristics of the coating, so that the added value of the product is improved. The invention provides a new way for high value-added utilization of the tobacco tar.

Description

Technical Field

[0001] The invention relates to the technical field of paper production, in particular to a paper coating and a preparation method thereof, and specifically to a coating for cigarette packaging paper having a tobacco flavor and a preparation method thereof. Background Art

[0003] In the process of making tobacco sheets from tobacco stems by papermaking, the aqueous solution of heated and boiled tobacco stems is extracted and concentrated to obtain the organic components in tobacco. This part of organic matter is called the essence of tobacco extract - tobacco oil. The tobacco oil has a strong tobacco flavor, which is the unique natural fragrance of tobacco. At present, the treatment method of tobacco oil is to use it in the production of organic fertilizer, but only a small part of the tobacco oil is treated in this way, and more tobacco oil does not play its due value.

[0004] Adding tobacco oil as a raw material for coating ingredients to the production and manufacturing process of cigarette packaging paper can reuse waste or low-value organic resources, give the paper natural tobacco elements, and make the cigarette packaging paper itself emit tobacco aroma, which can enhance the synergistic effect of cigarette packaging on the product - using packaging to enhance the flavor and increase the attractiveness of cigarette products to consumers. However, tobacco oil contains a large amount of organic components (nicotine, pectin, plant protein, etc.), which can easily stain the front of the paper after drying when directly applied to the paper, or cause paper adhesion after absorbing environmental moisture. Therefore, the preparation process of cigarette paper based on tobacco oil should not only focus on maintaining the original flavor of the extract, but also minimize the impact of organic components in tobacco oil on paper performance and paper post-processing. Summary of the invention

[0005] The object of the present invention is to provide a tobacco packaging paper with a natural tobacco flavor. The tobacco packaging paper with a natural tobacco flavor of the present invention is obtained by using tobacco stem extract, namely tobacco oil, as one of the coating components of the tobacco packaging paper, and coating the coating containing tobacco oil on the back of cardboard, coated paper, and cigarette lining paper, so that the paper has a natural tobacco flavor, thus changing the long-standing status quo that tobacco packaging paper only has the smell of plant fibers.

[0006] Another object of the present invention is to provide the above-mentioned coating for cigarette packaging paper with tobacco flavor and a preparation method and application of the coating.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a cigarette packaging paper with tobacco flavor, comprising base paper and a coating, wherein the coating is obtained by coating a coating containing tobacco oil; the coating containing tobacco oil is composed of a pigment, an adhesive, tobacco oil, and a functional additive, and the base paper is cardboard, coated paper or cigarette lining paper; the functional additive is one or more of sodium carboxymethyl cellulose, a dispersant, a thickener, a rheological agent, a lubricant, a defoaming agent, a bactericide, caustic soda, and a water repellent.

[0008] The coating for cigarette packaging paper having tobacco flavor of the present invention is composed of the following components in parts by weight: 100 parts of pigment, 10-20 parts of adhesive, 0.1-15 parts of tobacco oil, 0.15-0.5 parts of dispersant, 0.25-1.5 parts of sodium carboxymethyl cellulose, 0.1-0.8 parts of water repellent, 0.1-0.8 parts of lubricant, 0.001-0.3 parts of defoamer, 0.005-0.5 parts of bactericide, 0.01-0.3 parts of caustic soda and water for preparing the coating to a required solid content.

[0009] Preferably, the pigment is one or more of calcium carbonate, china clay, calcined clay and titanium dioxide.

[0010] Preferably, the adhesive is one or more of styrene-butadiene latex, styrene-acrylic latex, acrylic emulsion, and starch.

[0011] Further preferably, the adhesive is one or more of an aqueous acrylic emulsion having a solid content of 20-50%, a styrene-acrylic latex having a solid content of 25-55%, a styrene-butadiene latex, and starch.

[0012] The method for preparing the coating of the cigarette packaging paper having the tobacco flavor of the present invention is preferably prepared by the following steps: (1) Add part of the preparation water, dispersant, sodium carboxymethyl cellulose, pigment, and smoke oil into a coating dispersion tank, stir at a speed of 3000 rpm for 10-60 minutes to obtain a dispersion with a pigment pre-dispersion concentration of 65-75%; (2) Increase the speed to 500 rpm, add the remaining preparation water, adhesive, water repellent, lubricant, defoamer, bactericide, and caustic soda into the paint dispersion tank, and continue stirring and dispersing at 500 rpm for 10-15 minutes to obtain the paint.

[0013] Preferably, the coating of the present invention has a solid content of 45-70%, a viscosity of 800-2500 CPS, and a pH value of 8-10.

[0014] The coating of the cigarette packaging paper with tobacco flavor of the present invention is applied by coating the coating on base paper by an off-machine coating method or an on-machine coating method to prepare the cigarette packaging paper with tobacco flavor.

[0015] The coating for cigarette packaging paper with tobacco flavor of the present invention can be applied by off-machine coating or on-machine coating, and the coating method can be one or a combination of blade coating, air knife coating, metering rod coating, curtain coating or other film transfer coating methods.

[0016] When the coating of the tobacco packaging paper with tobacco flavor of the present invention is coated on the base paper by an off-machine coating method or an on-machine coating method, the off-machine coating process is as follows: the coating is pumped from the coating storage tank to the feed tank, and the uncoated tobacco paper base paper is transported to the coating machine after being unwound from the papermaking machine; the coating is transported from the feed tank to the coating roller, and the coating is evenly coated on the back of the base paper according to the coating amount requirement, and the coated paper is dried, calendered, rewound, cut and packaged to obtain the finished tobacco packaging paper with tobacco flavor; When the coating of the tobacco packaging paper with tobacco flavor described in the present invention is coated on the base paper by an off-machine coating method or an on-machine coating method, the on-machine coating process is as follows: the coating is pumped from the coating storage tank to the feed tank, and then transported to the coating roller, and evenly coated on the back of the base paper according to the coating amount requirement, and the excess coating of the coating roller flows back into the reflux screen, and after filtering, enters the feed tank to continue to be coated by the coating roller, and the coated paper is dried, calendered, rewound, slit and packaged to obtain a finished tobacco packaging paper with tobacco flavor.

[0017] The coating amount of the cigarette packaging paper with tobacco flavor of the present invention on the back of the base paper is 5-25g / ㎡.

[0018] When the coating prepared by the technical solution of the present invention is used to prepare cigarette packaging paper with tobacco flavor, the gram weight of the cigarette packaging paper ranges from 20g / ㎡ to 300g / ㎡.

[0019] The dispersant, water repellent, lubricant, defoamer and bactericide described in the present invention can be selected from common chemical additives in the field of papermaking according to the production requirements of paper.

[0020] Compared with the prior art, the beneficial effects of the present invention are: (1) By using tobacco oil as one of the coating components of cigarette packaging paper, and applying the coating containing tobacco oil on the back of cardboard, coated paper, and cigarette lining paper, the paper is given the natural flavor of tobacco, changing the long-standing situation that cigarette packaging paper only has the smell of plant fibers; (2) Tobacco oil has a strong alkalinity. If it is directly applied on paper, it will cause the fibers to swell, destroy the paper structure, and cause the paper to absorb a sharp increase in water. In addition, tobacco oil contains a large amount of nicotine and pectin substances. If it is directly applied on paper, it is easy to stain the front of the paper even after drying, and cause the paper to stick after absorbing environmental moisture, making the coated paper products unable to be used normally. At the same time, tobacco oil is relatively viscous. If it is directly applied on the surface of paper, it cannot be spread evenly, resulting in a large number of color spots on the back, seriously affecting the visual effect and product quality. The technical solution of the present invention optimizes the formula of the coating, and the coating is firmly bonded to the back of the paper through the adhesive in the coating, eliminating the sticky phenomenon. At the same time, because the tobacco oil is evenly distributed in the coating, the adsorption effect of the pigment eliminates the paper adhesion phenomenon; the tobacco oil is added to the coating and fully stirred and mixed to eliminate the phenomenon of color spots on the back; (3) The coating of the present invention contains a pigment component in its formula. The pigment can absorb tobacco oil by utilizing its porosity and strong adsorption. After coating, the organic components in the tobacco oil adsorbed by the raw material in the coating are slowly released, thereby maintaining the long-lasting natural flavor of tobacco in the cigarette packaging paper. (4) The coating of the present invention introduces an adhesive into the formula, which solves the problem of moisture absorption of tobacco packaging paper caused by the use of tobacco oil. The coating prepared by the technical solution of the present invention is applied to the base paper to form a uniform coating, which can make the tobacco packaging paper have the performance of "moisture-retaining and moisture-retaining", and can reduce the impact of region, climate, temperature and humidity on cigarettes. For example, in a dry climate, the coating can keep the moisture of tobacco from being lost, and in the humid environment of the rainy season in the south, it can prevent the tobacco from absorbing moisture and becoming moldy; (5) The present invention uses a coating containing tobacco oil to prepare cigarette packaging paper, and introduces tobacco elements into the cigarette packaging paper, which can not only increase the original tobacco flavor on the back of the cigarette packaging paper, but also form a natural dark coating with tobacco oil on the back of the cigarette packaging paper, thereby increasing the recognition of the product, making the cigarette packaging paper have an anti-counterfeiting function, and improving the added value of the product; (6) The present invention uses tobacco oil to prepare coatings for special paper, providing a way to utilize tobacco oil with high added value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 A schematic structural diagram of cigarette packaging paper having tobacco flavor prepared by coating the coating of the present invention on the back of base paper, base paper and coating.

[0023] Figure 2 Schematic diagram of the coating preparation process.

[0024] Figure 3 Schematic diagram of the off-machine coating process.

[0025] Figure 4 Schematic diagram of the in-machine coating process.

[0026] Figure 5 Example 1 Schematic diagram of the production process of in-machine coated white cardboard.

[0027] Figure 6 Example 2 Schematic diagram of the production process of off-machine coated white cardboard.

[0028] Figure 7 Example 3 Schematic diagram of the production process of off-machine coated cigarette liner paper. DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention are provided below as a further detailed description of the present invention. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples consistent with some aspects of the present disclosure as detailed in the attached claims. The technical solutions in the embodiments of the present invention will be clearly and completely described below. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Embodiment 1 The present invention is implemented by the following scheme.

[0031] 1. Paint formula: 100 parts of pigment (calcium carbonate), 16 parts of adhesive (styrene-butadiene latex), 5 parts of smoke oil, 0.15 parts of dispersant, 0.25 parts of sodium carboxymethyl cellulose, 0.5 parts of water repellent, 0.6 parts of lubricant, 0.08 parts of defoamer, 0.025 parts of bactericide, 0.1 parts of caustic soda, 97 parts of water (water is added in two steps, of which the pigment pre-dispersion concentration is 72% and the amount of water added is 38 parts).

[0032] The parts are absolute dry weight parts; the parameters of the prepared coating are: solid content: 55%, viscosity: 950 CPS, pH value: 9.5.

[0033] 2. Coating preparation: (1) Add 38 parts of water, dispersant, sodium carboxymethyl cellulose, pigment, and smoke oil into the paint dispersion tank and stir at a speed of 3000 rpm for 50 minutes; (2) Increase the speed to 500 rpm, add the remaining water, adhesive, water repellent, lubricant, defoamer, bactericide, and caustic soda into the paint dispersion tank, and continue to stir and disperse at 500 rpm for 15 minutes to obtain the paint.

[0034] 3. Preparation of cigarette packaging paper with tobacco flavor (in-machine coated white cardboard) Use Figure 4 The process is used to prepare in-machine coated white cardboard. The base paper weight is 216 g / ㎡, the papermaking machine speed is 520 m / min, the back coating amount is 9 g / ㎡, and the coating method is blade coating. The prepared coated white cardboard product features: weight: 225 g / ㎡, water absorption value: 45 g / ㎡, and a strong tobacco flavor on the back.

[0035] Example 2 The present invention is implemented using the following scheme.

[0036] 1. Paint formula: 100 parts of pigment (60 parts of calcium carbonate and 40 parts of porcelain clay), 15.5 parts of adhesive (styrene-butadiene latex), 5.5 parts of smoke oil, 0.25 parts of dispersant, 0.4 parts of sodium carboxymethyl cellulose, 0.5 parts of water repellent, 0.46 parts of lubricant, 0.001 parts of defoamer, 0.023 parts of bactericide, 0.023 parts of caustic soda, and 108 parts of water.

[0037] The parts are absolute dry weight parts; the obtained coating parameters are: solid content: 53%, viscosity: 880 CPS, pH value: 9.0.

[0038] 2. Coating preparation: (1) Add 38 parts of water, dispersant, sodium carboxymethyl cellulose, pigment, and smoke oil into the paint dispersion tank and stir at a speed of 3000 rpm for 50 minutes; (2) The speed is increased to 500 rpm, and the remaining preparation water, adhesive, water repellent, lubricant, defoamer, bactericide, and caustic soda are added to the paint dispersion tank. The mixture is stirred and dispersed at a speed of 500 rpm for 15 minutes to obtain the paint.

[0039] 3. Preparation of cigarette packaging paper with tobacco flavor (off-machine coated white cardboard) Use Figure 5 The process is used to prepare in-machine coated white cardboard, wherein the base paper basis weight is 215 g / ㎡, the papermaking machine speed is 180 m / min, the back coating amount is 15 g / ㎡, and the coating method is metering rod coating.

[0040] The prepared coated white cardboard product features: basis weight: 230g / ㎡, water absorption value: 42g / ㎡, and a strong tobacco flavor on the back.

[0041] Example 3 The present invention is implemented using the following scheme.

[0042] 1. Paint formula: 100 parts of pigment (60 parts of calcium carbonate, 40 parts of porcelain clay), 16 parts of adhesive (styrene acrylic latex), 5 parts of smoke oil, 0.25 parts of dispersant, 0.5 parts of sodium carboxymethyl cellulose, 0.45 parts of water repellent, 0.4 parts of lubricant, 0.01 parts of defoamer, 0.02 parts of bactericide, 0.02 parts of caustic soda, and 82 parts of water.

[0043] The parts are absolute dry weight parts; the obtained coating parameters are: solid content: 60%, viscosity: 1900 CPS, pH value: 9.2.

[0044] 2. Coating preparation: (1) Place 38 parts of water, dispersant, sodium carboxymethyl cellulose, pigment, and smoke oil in a paint dispersion tank and stir at a speed of 3000 rpm for 50 minutes; (2) The speed is increased to 500 rpm, and the remaining preparation water, adhesive, water repellent, lubricant, defoamer, bactericide, and caustic soda are added to the paint dispersion tank. The mixture is stirred and dispersed at a speed of 500 rpm for 15 minutes to obtain the paint.

[0045] Preparation of cigarette packaging paper with tobacco flavor (off-machine coated cigarette lining paper) Use Figure 4 The process is used to prepare in-machine coated white cardboard, wherein the base paper basis weight is 52 g / ㎡, the papermaking machine speed is 220 m / min, the back coating amount is 12 g / ㎡, and the coating method is blade coating.

[0046] The prepared coated white cardboard product features: basis weight: 64g / ㎡, water absorption value: 35g / ㎡, and a strong tobacco flavor on the back.

[0047] Example 4 The coating for cigarette packaging paper having the original tobacco flavor of the present invention is prepared by the following formula: 100 parts of pigment (80 parts of calcium carbonate, 20 parts of calcined clay), 16 parts of adhesive (aqueous acrylic emulsion), 15 parts of tobacco oil, 0.5 parts of dispersant, 1.5 parts of sodium carboxymethyl cellulose, 0.15 parts of water repellent, 0.8 parts of lubricant, 0.3 parts of defoamer, 0.005 parts of bactericide, 0.2 parts of caustic soda, and water to prepare the coating to the required solid content.

[0048] Example 5 The coating for cigarette packaging paper having tobacco flavor of the present invention is prepared by the following formula: 100 parts of pigment (calcium carbonate), 15 parts of adhesive (styrene acrylic latex), 0.1 parts of tobacco oil, 0.1 parts of dispersant, 0.85 parts of sodium carboxymethyl cellulose, 0.5 parts of water repellent, 0.2 parts of lubricant, 0.05 parts of defoamer, 0.015 parts of bactericide, 0.08 parts of caustic soda, and water to prepare the coating to the required solid content.

[0049] Example 6 The coating for cigarette packaging paper having tobacco flavor of the present invention is prepared by the following formula: 100 parts of pigment (calcium carbonate), 6 parts of adhesive (starch), 13 parts of adhesive (styrene-butadiene latex), 12 parts of tobacco oil, 0.25 parts of dispersant, 1.0 parts of sodium carboxymethyl cellulose, 0.75 parts of water repellent, 0.5 parts of lubricant, 0.1 parts of defoamer, 0.05 parts of bactericide, 0.03 parts of caustic soda, and water to prepare the coating to the required solid content.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0051] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope of the present disclosure is indicated by the following claims.

Claims

1. A cigarette packaging paper having tobacco flavor, characterized in that: The cigarette packaging paper is composed of base paper and a coating, wherein the coating is obtained by coating a coating containing tobacco oil; the coating containing tobacco oil is composed of a pigment, an adhesive, tobacco oil, and a functional additive, and the base paper is cardboard, coated paper, or cigarette lining paper; the functional additive is one or more of sodium carboxymethyl cellulose, a dispersant, a thickener, a rheological agent, a lubricant, a defoamer, a bactericide, caustic soda, and a water repellent.

2. A coating for cigarette packaging paper having the original flavor of tobacco, characterized in that: The invention is composed of the following components in parts by weight: 100 parts of pigment, 10-20 parts of adhesive, 0.1-15 parts of smoke oil, 0.15-0.5 parts of dispersant, 0.25-1.5 parts of sodium carboxymethyl cellulose, 0.1-0.8 parts of water repellent, 0.1-0.8 parts of lubricant, 0.001-0.3 parts of defoamer, 0.005-0.5 parts of bactericide, 0.01-0.3 parts of caustic soda, and water for preparing the coating to a required solid content.

3. The coating for cigarette packaging paper having tobacco flavor according to claim 2, characterized in that: The pigment is one or more of calcium carbonate, porcelain clay, calcined clay and titanium dioxide.

4. The coating for cigarette packaging paper having tobacco flavor according to claim 2 or 3, characterized in that: One or more of the styrene-butadiene latex, styrene-acrylic latex, acrylic emulsion and starch.

5. The coating for cigarette packaging paper having tobacco flavor according to any one of claims 2 to 4, characterized in that: The adhesive is one or more of a water-based acrylic emulsion with a solid content of 20-50%, styrene-acrylic latex with a solid content of 25-55%, styrene-butadiene latex, and starch.

6. The coating for cigarette packaging paper having tobacco flavor according to any one of claims 2 to 5, characterized in that: The preparation method thereof comprises the following steps: Add part of the preparation water, dispersant, sodium carboxymethyl cellulose, pigment, and smoke oil into the coating dispersion tank, stir for 10-60 minutes at a speed of 3000 rpm to obtain a dispersion with a pigment pre-dispersion concentration of 65-75%; Increase the speed to 500 rpm, add the remaining preparation water, adhesive, water repellent, lubricant, defoamer, bactericide and caustic soda into the paint dispersion tank, continue stirring and dispersing at a speed of 500 rpm for 10-15 minutes to obtain the paint.

7. The coating for cigarette packaging paper having tobacco flavor according to any one of claims 2 to 6, characterized in that: The coating has a solid content of 45-70%, a viscosity of 800-2500 CPS, and a pH value of 8-10.

8. An application of the coating for cigarette packaging paper having tobacco flavor as claimed in any one of claims 2 to 7, characterized in that: The coating is applied by coating the coating on base paper by an off-machine coating method or an on-machine coating method, so as to prepare tobacco packaging paper having the original tobacco flavor; during the off-machine coating or on-machine coating method, one or a combination of blade coating, air knife coating, metering rod coating, curtain coating or other film transfer coating methods can be used.

9. An application of the coating for cigarette packaging paper having tobacco flavor as claimed in any one of claims 2 to 7, characterized in that: The coating is applied by applying the coating to the base paper by an off-machine coating method or an on-machine coating method; The off-machine coating process is as follows: the coating is pumped from the coating storage tank to the feed tank, and the uncoated cigarette paper base paper is transported to the coating machine after being unwound from the paper machine; the coating is transported from the feed tank to the coating roller, and is evenly coated on the back of the base paper according to the coating amount requirement; the coated paper is dried, calendered, rewound, slit and packaged to obtain a finished cigarette packaging paper with the original tobacco flavor; The coating process in the machine is as follows: the coating is pumped from the coating storage tank to the feed tank, and then transported to the coating roller, and evenly coated on the back of the base paper according to the coating amount requirement, the excess coating of the coating roller flows back into the reflux screen, and after filtering, it flows into the feed tank to continue to be used for coating by the coating roller, and the coated paper is dried, calendered, rewound, slit and packaged to obtain a finished cigarette packaging paper with tobacco flavor.

10. The use of the coating for cigarette packaging paper having tobacco flavor according to claim 9, characterized in that: The coating amount on the back of the base paper is 5-25g / ㎡.

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