A method for producing a strip-shaped transparent inner liner paper and a composite inner liner paper produced thereby

Abstract

The application provides a production method of strip-shaped transparent inner liner paper, comprising the following steps: compounding raw paper and aluminum foil to form aluminum foil paper; coating one side of the aluminum foil paper with glue and compounding the aluminum foil paper with a PET film; printing and coloring on the other side of the aluminum foil paper to form a color layer; positioning by light marks to draw strips on the PET film and the color layer to form transparent strip-shaped gaps and film strip-shaped gaps; and embossing or cutting into finished products. The strip-shaped transparent inner liner paper produced by the production method has better barrier property, can keep moisture and aroma for a longer time, and customers can clearly observe cigarettes and technical measures such as reducing tar and reducing harm through the transparent strip-shaped gaps, thereby enhancing the ornamental property and improving the perceptible consumption experience. Meanwhile, the PET base film after peeling can be reused, thereby reducing the production cost. Therefore, compared with the prior art, the product produced by the application has the advantages of convenient perspective observation (non-open state), better barrier property, good machine adaptability, and novel and beautiful appearance.

Description

TECHNICAL FIELD

[0001] The present application relates to a production process of a cigarette packaging material, in particular to a production method of a strip-shaped transparent inner liner paper and a produced composite inner liner paper. BACKGROUND

[0002] The inner liner paper for cigarettes is a paper that is lined in a cigarette small box and wraps a cigarette. The inner liner paper for cigarettes has a certain moisture and oxygen blocking effect on the cigarette, preventing mildew and aroma loss of the cigarette. At present, the original paper is compounded with aluminum foil and then processed on the market, which has limited barrier performance, and the inner liner paper wraps the cigarette in all aspects, which leads to the inability to observe the internal condition of the cigarette. Therefore, it is a general market demand to find an inner liner product with good barrier performance, good machine adaptability and meeting the consumer and market demand. SUMMARY

[0003] The purpose of the present application is to provide a production method of a strip-shaped transparent inner liner paper to solve the problems of limited barrier performance and inconvenience of observation and experience in a non-opening state of the product produced by the prior art.

[0004] In view of this, the present application provides a production method of a strip-shaped transparent inner liner paper, comprising the following steps:

[0005] Step S1, compounding an original paper with an aluminum foil to form an aluminum foil paper;

[0006] Step S2, coating one side of the aluminum foil paper with glue and compounding with a PET film;

[0007] Step S3, printing and coloring on the other side of the aluminum foil paper to form a color layer;

[0008] Step S4, strip drawing on the PET film and the color layer by light positioning to form transparent strip-shaped gaps and film strip-shaped gaps;

[0009] Step S5, embossing or slitting into finished products.

[0010] In a feasible implementation, in the step S1, the original paper is compounded with the aluminum foil through a polyvinyl alcohol series latex.

[0011] In a feasible implementation, in the step S1, the thickness of the aluminum foil is 6-6.5 pm, and the grammage of the original paper is 80-86 g / m 2 2 When compounding, the paper unwinding tension is 10-30 N, the aluminum foil unwinding tension is 10-24 N, the winding tension is 18-50 N, and the machine speed is 130±10 m / min.

[0012] ​In an implementable embodiment, in the step S2, the thickness of the PET film is 10-20 μm, the gram weight of the PET film is 19 g / m 2 -25 g / m 2 , the surface tension is ≥ 35 dyn, the unwinding tension of the PET film is 0.1±0.05 MPa, the pressure of the coating roller is 0.2±0.05 MPa, the machine speed of the coating machine is 100±10 m / min, the coating viscosity is 14±2 S, the winding tension of the coated film is 0.1±0.05 MPa, and the glue used is white emulsion.

[0013] In an implementable embodiment, in the step S3, water-based ink is used when coloring.

[0014] In an implementable embodiment, in the step S4, after the light mark positioning, the strip is drawn according to the thickness of the aluminum foil paper and the PET film.

[0015] In an implementable embodiment, in the step S5, the embossing machine speed is 100-120 m / s.

[0016] According to another aspect of the present application, there is also provided a composite inner liner paper prepared by the production method of the strip-shaped transparent inner liner paper as described above.

[0017] The technical solution of the present application has at least the following beneficial effects:

[0018] The present application provides a strip-shaped transparent inner liner paper. First, the base paper is compounded with aluminum foil to form aluminum foil paper. Then, glue is coated on one side of the aluminum foil paper and compounded with a PET film. Printing and coloring are performed on the other side of the aluminum foil paper to form a color layer. Subsequently, the PET film and the color layer are drawn into strips by light mark positioning to form transparent strip-shaped gaps and film strip-shaped gaps. Finally, embossing or cutting is performed to form finished products. The strip-shaped transparent inner liner paper produced by the production method has better barrier properties, allowing moisture and aroma to be maintained for a longer period of time. Customers can clearly observe the cigarettes and technical measures such as reducing harm through the transparent strip-shaped part, enhancing the ornamental value while improving the perceptible consumer experience. At the same time, the PET base film after peeling can be reused, reducing production costs. Therefore, compared with the prior art, the product produced by the present application has the advantages of convenient perspective observation (non-opening state), better barrier properties, good machine adaptability, and aesthetic novelty. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings:

[0020] Figure 1 The figure shows the structure of the composite strip-shaped transparent inner liner paper produced by the production method of the strip-shaped transparent inner liner paper provided by an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The drawings show typical embodiments of the present application. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application.

[0023] The general idea of the present application is: in view of the limited barrier performance of the products produced by the prior art, the inconvenience of observing when in a non-opening state, a production method of strip-shaped transparent inner liner paper is provided. First, the base paper is compounded with aluminum foil to form aluminum foil paper; then glue is applied on one side of the aluminum foil paper and compounded with PET film, and printing is performed on the other side of the aluminum foil paper to form a color layer; then, through light cursor positioning, strip-shaped transparent gaps and film strip-shaped gaps are formed on the PET film and the color layer; finally, embossing or slitting is performed to form finished products. The strip-shaped transparent inner liner paper produced by the production method has better barrier properties, so that moisture and aroma can be maintained for a longer period of time; and customers can clearly observe the cigarettes and the technical measures of reducing harm through the strip-shaped transparent part, thereby enhancing the ornamental value and improving the perceptible consumer experience; at the same time, the PET base film after peeling can be reused, thereby reducing the production cost. Therefore, compared with the prior art, the product produced by the present application has the advantages of convenient perspective observation (non-opening state), better barrier property, good machine adaptability, and novel appearance.

[0024] For better understanding of the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0025] An embodiment of the present application provides a production method of strip-shaped transparent inner liner paper, comprising the following steps:

[0026] Step S1, composite the base paper with aluminum foil to form aluminum foil paper;

[0027] Specifically, in an embodiment of the present application, in the step S1, the base paper is compounded with the aluminum foil by polyvinyl alcohol series emulsion.

[0028] Specifically, in an embodiment of the present application, in the step S1, the thickness of the aluminum foil used is 6μm-6.5μm, which can be 6.5μm, but is not limited to the listed values, and other values not listed in this range are also applicable; the grammage of the base paper is 80g / m 2 -86g / m 2 , which can be 80g / m 2 , 85g / m 2 , but is not limited to the listed values, and other values not listed in this range are also applicable; when compounding, the paper unwinding tension is 10N-30N, which can be 10N, 13N or 25N, but is not limited to the listed values, and other values not listed in this range are also applicable; the aluminum foil unwinding tension is 10N-24N, which can be 15N, 18N or 20N, but is not limited to the listed values, and other values not listed in this range are also applicable; the winding tension is 18N-50N, which can be 18N, but is not limited to the listed values, and other values not listed in this range are also applicable; the machine speed is 130±10m / min, which can be 120m / min, 130m / min or 135m / min, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0029] Step S2, one side of the aluminum foil paper is coated with glue and compounded with PET film;

[0030] Specifically, in an embodiment of the present application, in the step S2, the thickness of the PET film is 10μm-20μm, which can be 10μm, 13μm or 15μm, but is not limited to the listed values, and other values not listed in this range are also applicable; the grammage of the PET film is 19g / m 2 -25 g / m2 , can be 20 g / m 2 , 22 g / m 2 , or 25 g / m 2 , but not limited to the listed values, other values within the range are also applicable; the surface tension is ≥ 35 dyn, can be 35 dyn or 37 dyn, but not limited to the listed values, other values within the range are also applicable; the unwinding tension of the PET film is 0.1 ± 0.05 MPa; the pressure of the coating roller is 0.2 ± 0.05 MPa; the machine speed of the coating machine is 100 ± 10 m / min; the coating viscosity is 14 ± 2 S; the winding tension of the coated film is 0.1 ± 0.05 MPa; the glue used is white latex.

[0031] Step S3, printing color on the other side of the aluminum foil paper to form a color layer;

[0032] Specifically, in an embodiment of the present application, in the step S3, water-based ink is used when coloring.

[0033] Step S4, drawing strips on the PET film and the color layer by light cursor positioning to form transparent strip-shaped gaps and film strip-shaped gaps;

[0034] Specifically, in an embodiment of the present application, in the step S4, strip drawing is performed according to the thickness of the aluminum foil paper and the PET film after light cursor positioning.

[0035] Step S5, embossing or slitting into finished products.

[0036] Specifically, in an embodiment of the present application, in the step S5, the embossing machine speed is 100 m / s-120 m / s, can be 105 m / s, 110 m / s, or 116 m / s, but not limited to the listed values, other values within the range are also applicable.

[0037] The embodiments of the present application are further described in the following embodiments. The embodiments of the present application are not limited to the following specific embodiments. Within the scope of the same rights, appropriate changes can be made.

[0038] Embodiment 1

[0039] A production method of a strip-shaped transparent inner liner paper, comprising the following steps:

[0040] 1) 80 g / m 2The inner lining paper 1 is made into aluminum foil paper by laminating polyvinyl alcohol series latex 2 with 6.5μm aluminum foil 3. During lamination, the unwinding tension of the paper is 10N, the unwinding tension of the aluminum foil is 15N, and the winding tension is 18N. The laminating adhesive and aluminum foil need to pass through an oven with 4 temperature zones. The oven is divided into 4 temperature zones, and the temperatures of the 4 temperature zones according to the material travel direction are 45℃, 60℃, 60℃ and 45℃ respectively. The machine speed is 120m / min.

[0041] 2) A thickness of 10μm and a basis weight of 20g / m 2 A PET film 6 with a surface tension of 35 dyn is laminated with aluminum foil using white glue 5. During lamination, the unwinding tension of the film is 0.1 ± 0.05 MPa, the winding tension is 0.1 ± 0.05 MPa, and the dry glue weight is 1.1 g / m³. 2 .

[0042] 3) After the film is laminated, the aluminum foil is printed and colored. The printing temperature is 70℃, the machine speed is 130m / min, and the color difference △E*ab is 1.4. After printing and coloring, the aluminum film forms color layer 4. Then, the cursor is positioned according to the thickness of the aluminum foil and the product requirements, and the strip is drawn.

[0043] 4) On the back of the aluminum foil after film lamination, after positioning the cursor, perform a small stripping based on the original film thickness;

[0044] 5) According to the design, the embossing machine operates at a speed of 100m / s to emboss and cut the finished product.

[0045] Example 2

[0046] A method for producing strip-shaped transparent inner liner paper includes the following steps:

[0047] 1) 85g / m 2 The inner lining paper 1 is made into aluminum foil paper by laminating polyvinyl alcohol series latex 2 with 6.5μm aluminum foil 3. During lamination, the unwinding tension of the paper is 20N, the unwinding tension of the aluminum foil is 20N, and the winding tension is 35N. The laminating adhesive and aluminum foil need to pass through an oven with 4 temperature zones. The oven is divided into 4 temperature zones, and the temperatures of the 4 temperature zones according to the material feeding direction are 45℃, 60℃, 60℃ and 45℃ respectively. The machine speed is 130m / min.

[0048] 2) A thickness of 15μm and a basis weight of 23g / m² 2 A PET film 6 with a surface tension of 35 dyn is laminated with aluminum foil paper using white glue 5. During the lamination process, the unwinding tension of the film is 0.1 ± 0.05 MPa, the winding tension is 0.1 ± 0.05 MPa, and the dry glue content is 1.1 g / m2.

[0049] 3) The aluminum foil paper after film compounding, printing color, printing temperature is 80℃, machine speed is 130m / min, color difference ΔE*ab is 1.3, the aluminum plated film after printing color forms color layer 4, after light mark positioning, according to the thickness of aluminum foil paper and product demand, positioning is carried out to draw strip;

[0050] 4) The back of aluminum foil paper after film compounding, after light mark positioning, according to the thickness of original film, a small section of draw strip is carried out;

[0051] 5) According to design, embossing machine speed is 110m / s to carry out embossing, and cutting into finished product.

[0052] Example 3

[0053] A production method of strip-shaped transparent inner liner paper, comprising the following steps:

[0054] 1) 80g / m 2 The inner liner base paper 1 is compounded with 6.5μm aluminum foil 3 to form aluminum foil paper by polyvinyl alcohol series emulsion 2, during compounding, the paper unwinding tension is 25N, the aluminum foil unwinding tension is 18N, and the winding tension is 30N, the compounding glue and aluminum foil need to pass through an oven with 4 temperature zones, the oven is divided into 4 temperature zones, the temperatures of the 4 temperature zones are 45℃, 60℃, 60℃ and 45℃ respectively according to the incoming material running direction, and the machine speed is 130m / min.

[0055] 2) The PET original film 6 with thickness of 18μm, grammage of 25g / m 2 , and surface tension of 37dyn is compounded with the aluminum foil paper by white emulsion 5 to form, during compounding, the original film unwinding tension is 0.1±0.05MPa, the winding tension is 0.1±0.05MPa, and the dry glue amount is 1.1g / m 2 .

[0056] 3) The aluminum foil paper after film compounding, printing color, printing temperature is 75℃, machine speed is 125m / min, color difference ΔE*ab is 1.4, the aluminum plated film after printing color forms color layer 4, after light mark positioning, according to the thickness of aluminum foil paper and product demand, positioning is carried out to draw strip;

[0057] 4) The back of aluminum foil paper after film compounding, after light mark positioning, according to the thickness of original film, a small section of draw strip is carried out;

[0058] 5) According to design, embossing machine speed is 110m / s to carry out embossing, and cutting into finished product.

[0059] In the specification provided herein, a large number of specific details are explained. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0060] Similarly, it is to be understood that the embodiments of the present application can be used in the exact opposite way of that described above. That is, the various features of the application can be grouped together in a single embodiment, drawing, or description of an embodiment, in order to streamline the disclosure and help the reader understand one or more of the various inventive aspects. However, this approach to the disclosure should not be interpreted to reflect an intention that the claimed application requires more features than are explicitly recited in each claim. Rather, inventive aspects lie in fewer than all features of a previously disclosed single embodiment, as reflected in the claims below. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.

[0061] Furthermore, those skilled in the art will recognize that references in the specification to "one embodiment", "an embodiment", "an example embodiment", mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0062] It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that one skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and any combination thereof. In a unit claim, several devices can be listed with a comma. These are considered to be an "of" list such that any one of the devices can be used individually, or any combination. The use of the words "first", "second", and other such numberings of a list of elements does not indicate any order. The words can be interpreted to be names.

Claims

1. A method of producing a strip transparent inner liner paper, characterized by, Comprising the following steps: Step S1, the raw paper is compounded with aluminum foil to form aluminum foil paper, the raw paper is compounded with the aluminum foil through polyvinyl alcohol series emulsion, the thickness of the aluminum foil is 6-6.5 μm, and the grammage of the raw paper is 80 g / m 2 -86 g / m 2 When compounding, the paper unwinding tension is 10-30 N, the aluminum foil unwinding tension is 10-24 N, the winding tension is 18-50 N, and the machine speed is 130±10 m / min. Step S2, one side of the aluminum foil paper is coated with glue and compounded with PET film, the thickness of the PET film is 10-20 μm, the grammage of the PET film is 19 g / m 2 -25 g / m 2 , the surface tension is ≥ 35 dyn, the unwinding tension of the PET film is 0.1±0.05 MPa, the pressure of the coating roller is 0.2±0.05 MPa, the machine speed of the coating machine is 100±10 m / min, the coating viscosity is 14±2 S, the winding tension of the coated film is 0.1±0.05 MPa, and the glue used is white emulsion; Step S3, printing color on the other side of the aluminum foil paper to form a color layer, using water-based ink when coloring; Step S4, drawing strips on the PET film and the color layer by light cursor positioning to form transparent strip-shaped gaps and film strip-shaped gaps, wherein the strip drawing is performed according to the thickness of the aluminum foil paper and the PET film after the light cursor positioning; Step S5, embossing or slitting into finished products.

2. The method of producing a strip-shaped transparent liner paper according to claim 1, characterized by, In the step S5, the embossing machine speed is 100 m / s-120 m / s.

3. A composite liner paper characterized by, Prepared by the production method of the strip-shaped transparent inner liner paper according to any one of claims 1-2.

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