WO2018184322A1 - Constant-humidity quality-maintaining and aroma-conservation aluminum foil composite inner liner for cigarette and manufacturing process therefor - Google Patents

Abstract

A constant-humidity quality-maintaining and aroma-conservation aluminum foil composite inner liner for a cigarette, comprising a raw paper layer (1). A composite rubber layer (3), an aluminum foil layer (4) and a water-based protection layer (5) are arranged on the upper surface of the raw paper layer (1), and the lower surface thereof is provided with a moisture humidifying layer (6); the inner liner also comprises a moisture preservation and aroma conservation layer (2) arranged on the upper surface or the lower surface of the raw paper layer (1), wherein the moisture preservation and aroma conservation layer (2) is arranged between the raw paper layer (1) and the composite rubber layer (3) or is arranged between the raw paper layer (1) and the moisture humidifying layer (6). During preparation, the surface of the raw paper layer (1) is first provided with the moisture preservation and aroma conservation layer (2), followed by the composite rubber layer (3), the aluminum foil layer (4) and the water-based protection layer (5), and the lower surface of the raw paper layer (1) is provided with the moisture humidifying layer (6); or, the upper surface of the raw paper layer (1) is sequentially provided with the composite rubber layer (3), the aluminum foil layer (4) and the water-based protection layer (5) and the lower surface of the raw paper layer (1) is sequentially provided with the moisture preservation and aroma conservation layer (2) and the moisture humidifying layer (6). By means of the arrangement of the moisture preservation and aroma conservation layer (2), the moisture of a cigarette product may be effectively balanced, and the quality of the cigarette product may be maintained.

Description

Lining paper for constant humidity, quality and fragrance-preserving aluminum foil composite cigarette and manufacturing process thereof Technical field

The invention relates to an inner liner paper and a manufacturing process thereof, in particular to an aluminum foil composite tobacco inner liner paper for cigarette packaging, which has the functions of constant humidity, quality and fragrance, and a corresponding manufacturing process thereof, and belongs to the technical field of papermaking.

Background technique

The lining paper for cigarettes is used as a supporting material for cigarette packaging, and its function is to block the cigarette. The lining paper for cigarettes currently used on the market mainly consists of aluminum foil composite inner liner paper, aluminized transfer liner paper, vacuum aluminized inner liner paper and aluminum-free inner liner paper clock. Due to the difference in moisture permeability index of the inner liner paper and its calibrated moisture content (5%±1%), when the cigarette package is put into the market, the moisture of the cigarette itself will be different with the storage time and the relative humidity and temperature difference of the environment. Mildew occurs due to long storage time and high temperature, high humidity storage environment, and low temperature, low humidity storage environment will affect the quality of cigarettes. Therefore, how to solve the problem of the change of cigarette quality caused by the change of relative humidity and temperature of cigarettes has always been an urgent problem to be solved in the tobacco field.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and to provide an aluminum foil composite tobacco inner liner paper having a constant moisture quality and aroma retention function. Further, another object of the present invention is to provide a process for producing the constant-humidity and quality-preserving aroma-resistant aluminum foil composite tobacco inner liner paper.

To achieve the above object, the present invention adopts the following technical solutions:

The invention relates to a lining paper for constant-humidity and quality-protecting aluminum foil composite tobacco, comprising a base paper layer, wherein: the upper surface of the base paper layer is further provided with a composite rubber layer, an aluminum foil layer and an aqueous protective layer from the inside to the outside, the base paper The lower surface of the layer is provided with a moisture-repellent layer, and the lining paper for cigarette further comprises a moisturizing and savory layer disposed on the upper surface or the lower surface of the base paper layer.

Preferably, the moisturizing and scenting layer is disposed between the base paper layer and the composite rubber layer.

Preferably, the moisturizing and scenting layer is disposed between the base paper layer and the moisture-retaining layer.

Preferably, the moisturizing and scenting layer is an inorganic powder or an organic powder material layer, and the moisture absorbing layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² .

Preferably, the inorganic powder or organic powder has a particle diameter of 0.3 to 100 μm and a specific surface area of 30 to 2000 g/m ² .

Preferably, the composite adhesive layer is an aqueous composite adhesive layer having a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature of 80 ° C to 120 ° C.

Preferably, the aluminum foil layer has a thickness of 0.006 mm.

Preferably, the aqueous protective layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature of 80 ° C to 120 ° C.

Another object of the present invention is a manufacturing process for a lining paper for cigarettes as described above, which comprises the following manufacturing steps:

1) forming a moisturizing and scenting layer on the upper surface of the base paper layer by roll coating or spraying, wherein the moisture absorbing layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature thereof It is 80 ° C - 120 ° C;

2) forming a composite adhesive layer on the upper surface of the moisturizing and scenting layer by a gravure printing process, wherein the composite adhesive layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature of 80 ° C - 120 °C;

3) by a wet compounding process, the aluminum foil and the moisturizing and aroma layer are composited by a composite adhesive layer to form an aluminum foil layer;

4) forming an aqueous protective layer on the surface of the aluminum foil layer by gravure printing, wherein the aqueous protective layer has a dry coating amount of 1g / m ² -5g / m ² and a curing temperature of 80-120 ° C;

5) Water is applied to the lower surface of the base paper layer to be wet-processed to form a moisture-wet layer on the lower surface of the base paper layer to control the moisture content of the finished paper to 5% ± 1%.

Alternatively, the manufacturing process of the lining paper for cigarettes may include the following manufacturing steps:

1) forming a composite adhesive layer on the upper surface of the base paper layer by a gravure printing process, wherein the composite adhesive layer has a dry coating amount of 1 g / m ² -5 g / m ² and a curing temperature of 80 ° C - 120 ° C;

2) by a wet composite process, the aluminum foil and the base paper layer are composited by a composite adhesive layer to form an aluminum foil layer;

3) forming an aqueous protective layer on the surface of the aluminum foil layer by gravure printing, wherein the aqueous protective layer has a dry coating amount of 1 g / m ² -5 g / m ² and a curing temperature of 80-120 ° C;

4) forming a moisturizing and scenting layer on the lower surface of the base paper layer by roll coating or spraying, wherein the moisture absorbing layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature thereof It is 80 ° C - 120 ° C;

5) Water is added to the lower surface of the base paper layer to be wet-processed to form a moisture-wet layer on the lower surface of the moisture-retaining layer to control the moisture content of the finished paper to 5% ± 1%.

The invention has the beneficial effects that the aluminum foil composite tobacco inner lining paper of the invention can realize the absorption of moisture when the cigarette product is stored in a high temperature and high humidity environment through the setting of the moisturizing and scenting layer, and is stored at low temperature and low humidity. The water can be released under the environment, and the quality of the cigarette is not reduced due to the length of storage time and the difference in relative humidity and temperature of the environment. It can effectively balance the moisture of cigarette products and maintain the quality of cigarette products.

DRAWINGS

1 is a schematic structural view of a constant-humidity and quality-preserving aroma-proof aluminum foil composite tobacco inner liner paper according to the present invention;

2 is a schematic view showing the structure of a constant-humidity and moisture-preserving aroma-proof aluminum foil composite tobacco inner liner paper according to another embodiment of the present invention.

detailed description

The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , the lining paper for constant-humidity and savory-preserving aluminum foil composite tobacco according to the present invention comprises a base paper layer 1 , and the upper surface of the base paper layer 1 is laminated with a composite rubber layer 3 from the inside to the outside. The aluminum foil layer 4 and the water-repellent protective layer 5 are further provided with a moisture-wet layer 6 on the lower surface of the base paper layer 1. In addition, the inner liner of the present invention further comprises a moisturizing and scenting layer 2, which can be disposed on the upper surface of the base paper layer 1 between the base paper layer 1 and the composite rubber layer 3. Alternatively, as shown in FIG. 2, the moisturizing and scenting layer 2 may be disposed between the base paper layer 1 and the moisture-retaining layer 6.

Specifically, in the present invention, the base paper layer 1 may be an aluminum foil composite base paper layer; the composite adhesive layer 3 is formed on the upper surface of the base paper layer 1 or the moisturizing and scented layer 2 by a gravure printing process. Wherein the gravure process has a gravure pit depth of from 30 μm to 70 μm, a dry coating amount of from 1 g/m ^{2 to 5} g/m ² , and a curing temperature of from 80 ° C to 120 ° C.

The aluminum foil having a thickness of preferably 0.006 mm is composited with the moisturizing fragrance layer 2 or the base paper layer 1 via the composite adhesive layer 3 by a wet compounding process to form the aluminum foil layer 4.

Subsequently, an aqueous protective layer 5 is formed on the surface of the aluminum foil layer 4 by gravure printing to prevent scratching of the aluminum foil layer 4 and to ensure smoothness of the inner liner paper, wherein the aqueous The protective layer 5 has a dry coating amount of 1 g/m ^{2 to 5} g/m ² , a curing temperature of 80 to 120 ° C, and a gravure pit depth of 30 μm to 50 μm.

The lower surface of the base paper layer 1 is subjected to a wet-wet treatment/humidification treatment with water to form a moisture-wet layer 7 on the lower surface of the base paper layer 1 so that the moisture content of the finished paper is controlled to 5% ± 1%.

In addition, the inner liner may further include a moisturizing protection between the upper surface of the base paper layer 1 and the composite rubber layer 3 or between the lower surface of the base paper layer 1 and the moisture-wet layer 6. The fragrant layer 2, the moisturizing and scenting layer 2 is an inorganic powder or an organic powder material layer, wherein the inorganic powder is a ceramic powder, the organic powder is a polymer material powder; and the inorganic powder or the organic powder granule The diameter is 0.3-100 μm, the specific surface area is 30-2000 g/m ² , which is formed on the upper surface or the lower surface of the base paper layer 1 by roll coating or spraying, and the dry coating amount of the moisturizing and scent-protecting layer 2 is 1g/m ² -5g/m ² , and the roller coating is an anilox roller with a pit depth of 30μm-80μm, the number of anilox rolls is 10 lines-150 lines, and the curing temperature is 80°C-120. °C.

Example 1

The invention relates to a lining paper for constant-humidity and quality-preserving scent-proof aluminum foil composite cigarette, which has a structure as shown in FIG. 1 , comprising a base paper layer 1 and a moisturizing and scenting layer 2 which are laminated on the upper surface of the base paper layer 1 in order from the inside to the outside. The composite adhesive layer 3, the aluminum foil layer 4 and the aqueous protective layer 5, and the lower surface of the base paper layer 1 is further formed with a moisture-wet layer 6. The manufacturing steps of the inner liner paper include:

1) A ceramic powder having a particle diameter of 50 μm and a specific surface area of 60 g/m ² is applied to the upper surface of the base paper layer 1 by roll coating to form a moisturizing and scenting layer 2, wherein the moisturizing and scenting layer 2 is dried. The coating amount is 3g/m ² , the pit depth of the anilox roll used in the roll coating process is 60 μm, the number of anilox rolls is 100 lines, and the curing temperature is 100 ° C;

2) forming a composite adhesive layer 3 on the upper surface of the moisturizing and scenting layer 2 by a gravure printing process, wherein the gravure process has a gravure pit depth of 35 μm and a dry coating amount of 5 g/m ² . The curing temperature is 100 ° C;

3) Through the wet composite process, the aluminum foil with a thickness of 0.006 mm and the moisturizing and aroma layer 2 are compounded by the composite rubber layer 3 Combine to form an aluminum foil layer 4;

4) forming an aqueous protective layer 5 on the surface of the aluminum foil layer 4 by gravure printing to prevent scratching of the aluminum foil layer 4 and to ensure smoothness of the inner liner paper, wherein the aqueous The protective layer 5 has a dry coating amount of 3 g/m ² , the curing temperature is controlled at 100 ° C, and the intaglio depth used is 40 μm;

5) Water-free treatment The aluminum-free lower surface of the base paper layer 1 is subjected to a wet treatment to form a moisture-wet layer 6 on the lower surface of the base paper layer 1 so that the moisture content of the finished paper is controlled to 5% ± 1%.

Example 2

As shown in FIG. 2, the structure includes a base paper layer 1 and a composite rubber layer 3 which is laminated on the upper surface of the base paper layer 1 in order from the inside to the outside. The aluminum foil layer 4 and the aqueous protective layer 5 are formed with a moisturizing and aroma layer 2 and a moisture-reducing layer 6 in this order from the inside to the outside of the base paper layer 1. The manufacturing steps of the inner liner paper include:

1) forming a composite adhesive layer 3 on the upper surface of the base paper layer 1 by a gravure printing process, wherein the gravure process has a gravure pit depth of 70 μm, a dry coating amount of 2 g/m ² , and a curing temperature. Is 12 ° C;

2) through the wet composite process, the aluminum foil with a thickness of 0.006mm and the base paper layer 1 composited by the composite adhesive layer 3 to form an aluminum foil layer 4;

3) forming an aqueous protective layer 5 on the surface of the aluminum foil layer 4 by gravure printing to prevent scratching of the aluminum foil layer 4 and ensuring smoothness of the inner liner paper, wherein the aqueous The protective layer 5 has a dry coating amount of 5 g/m ² , a curing temperature of 120 ° C, and a gravure pit depth of 50 μm;

4) spraying a polymer material powder having a particle diameter of 1 μm and a specific surface area of 2000 g/m 2 on the lower surface of the base paper layer 1 by spraying to form a moisturizing and scenting layer 2, wherein the moisturizing and scenting layer 2 is dry-coated. The amount is 1g/m ² and the curing temperature is 100 ° C;

5) The lower surface of the base paper layer 1 is subjected to a moisture-removing treatment to form a moisture-wet layer 6 on the lower surface of the constant-humidity-storing fragrance 2 so that the moisture content of the finished paper is controlled to 5% ± 1%.

The invention has been described in detail by the preferred embodiments. However, through the study of the previous article, Variations and additions of the embodiments will also be apparent to those of ordinary skill in the art. It is the Applicant's intention that all such variations and additions fall within the scope of the appended claims. The terminology used herein is for the purpose of illustration and description. Unless otherwise defined, all terms (including technical and scientific terms) used herein are the same as those of ordinary skill in the art. Any modification or modification of this product, the substitution and use of similar or similar substances within the scope or scope of the patent, is within the scope of the patent protection of the present invention.

Claims (10)

The invention relates to a lining paper for constant-humidity and quality-preserving scented aluminum foil composite cigarette, comprising a base paper layer, wherein: the upper surface of the base paper layer is provided with a composite rubber layer, an aluminum foil layer and an aqueous protective layer from the inside to the outside. The lower surface of the base paper layer is provided with a moisture-retaining layer, and the lining paper for cigarette further comprises a moisturizing and savory layer disposed on the upper surface or the lower surface of the base paper layer. The lining paper for cigarettes according to claim 1, wherein the moisturizing and scenting layer is disposed between the base paper layer and the composite rubber layer. The lining paper for cigarettes according to claim 1, wherein the moisturizing and scenting layer is disposed between the base paper layer and the moisture-retaining layer. The lining paper for cigarette according to any one of claims 1 to 3, wherein the moisturizing and scenting layer is an inorganic powder or an organic powder material layer, and the dry coating amount of the moisture absorbing layer is 1 g/m ^{2 - 5} g/m ² . The lining paper for cigarette according to claim 4, wherein the inorganic powder or the organic powder has a particle diameter of 0.3 to 100 μm and a specific surface area of 30 to 2000 g/m ² . The lining paper for cigarette according to any one of claims 1 to 3, wherein the composite adhesive layer is an aqueous composite adhesive layer having a dry coating amount of 1 g/m ^{2 to 5} g/m ² and cured. The temperature is from 80 ° C to 120 ° C. The lining paper for cigarette according to any one of claims 1 to 3, wherein the aluminum foil layer has a thickness of 0.006 mm. The lining paper for cigarette according to any one of claims 1 to 3, wherein the aqueous protective layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature of 80 ° C to 120 °C. A manufacturing process for a lining paper for tobacco according to claim 1, comprising the following manufacturing steps: 1) forming a moisturizing and scenting layer on the upper surface of the base paper layer by roll coating or spraying, wherein the moisture absorbing layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature thereof It is 80 ° C - 120 ° C; 2) forming a composite adhesive layer on the upper surface of the moisturizing and scenting layer by a gravure printing process, wherein the composite adhesive layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature of 80 ° C - 120 °C; 3) by a wet compounding process, the aluminum foil and the moisturizing and aroma layer are composited by a composite adhesive layer to form an aluminum foil layer; 4) forming an aqueous protective layer on the surface of the aluminum foil layer by gravure printing, wherein the aqueous protective layer has a dry coating amount of 1g / m ² -5g / m ² and a curing temperature of 80-120 ° C; 5) Water is applied to the lower surface of the base paper layer to be wet-processed to form a moisture-wet layer on the lower surface of the base paper layer to control the moisture content of the finished paper to 5% ± 1%. A manufacturing process for a lining paper for tobacco according to claim 1, comprising the following manufacturing steps: 1) forming a composite adhesive layer on the upper surface of the base paper layer by a gravure printing process, wherein the composite adhesive layer has a dry coating amount of 1 g / m ² -5 g / m ² and a curing temperature of 80 ° C - 120 ° C; 2) by a wet composite process, the aluminum foil and the base paper layer are composited by a composite adhesive layer to form an aluminum foil layer; 3) forming an aqueous protective layer on the surface of the aluminum foil layer by gravure printing, wherein the aqueous protective layer has a dry coating amount of 1g / m ² -5g / m ² and a curing temperature of 80-120 ° C; 4) forming a moisturizing and scenting layer on the lower surface of the base paper layer by roll coating or spraying, wherein the moisture absorbing layer has a dry coating amount of 1 g/m ^{2 to 5} g/m ² and a curing temperature thereof It is 80 ° C - 120 ° C; 5) Water is added to the lower surface of the base paper layer to be wet-processed to form a moisture-wet layer on the lower surface of the moisture-retaining layer to control the moisture content of the finished paper to 5% ± 1%.

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