CN113338077A - Anti-thermoprinting deformation tipping base paper for cigarettes and preparation method and application thereof - Google Patents
Anti-thermoprinting deformation tipping base paper for cigarettes and preparation method and application thereof Download PDFInfo
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- CN113338077A CN113338077A CN202110546072.6A CN202110546072A CN113338077A CN 113338077 A CN113338077 A CN 113338077A CN 202110546072 A CN202110546072 A CN 202110546072A CN 113338077 A CN113338077 A CN 113338077A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
Abstract
The invention relates to the technical field of cigarette materials, in particular to burn-print deformation-resistant raw tipping paper for cigarettes and a preparation method and application thereof. The cigarette tipping base paper comprises a plastic layer, an enhancement layer and a compact layer which are sequentially stacked, wherein the fiber raw material of the plastic layer is gramineous fiber, and the compactness is 0.5g/cm3～1.0g/cm3The fiber raw material of the reinforced layer is cotton fiber and/or fibrilia, and the tightness is 1g/cm3～3g/cm3The fiber raw material of the compact layer is wood pulp fiber, and the compactness is 0.7g/cm3～1.2g/cm3。
Description
Technical Field
The invention relates to the technical field of cigarette materials, in particular to burn-print deformation-resistant raw tipping paper for cigarettes and a preparation method and application thereof.
Background
In recent years, in order to improve the appearance image and grade of cigarette products, the cigarette tipping paper is mainly designed and processed by complex single-ironing, two-color or three-color overlapping ironing, and hot stamping of pictures and texts to edges, and is affected by the pressure of a rubber roll, the tightness of alumite and the like in the hot stamping process, the pressed tipping paper is often deformed, and the situation of crushing can also occur under severe conditions, so that the tipping paper is easy to generate problems of lotus leaf edges, bulging, edge warping and the like, and the quality of subsequent tipping paper gluing and cigarette twisting is affected.
Disclosure of Invention
Therefore, the base paper for the cigarette tipping paper capable of preventing hot stamping deformation, and the preparation method and the application thereof are needed to be provided.
The invention provides raw paper of cigarette tipping paper capable of preventing hot stamping deformation, which comprises a plastic layer, an enhancement layer and a compact layer which are sequentially laminated, wherein the fiber raw material of the plastic layer is gramineous fiber, and the compactness is 0.5g/cm3～1.0g/cm3The fiber raw material of the reinforced layer is cotton fiber and/or fibrilia, and the tightness is 1g/cm3～3g/cm3The fiber raw material of the compact layer is wood pulp fiber, and the compactness is 0.7g/cm3～1.2g/cm3And the tightness of the enhancement layer is greatest.
In one embodiment, the compliant layer has a tightness of 0.7g/cm3～0.9g/cm3The tightness of the reinforced layer is 2g/cm3～3g/cm3The compactness of the compact layer is 0.9g/cm3～1.2g/cm3。
In one embodiment, the thickness of the plastic layer is 20-30 microns, the thickness of the reinforcing layer is 4-10 microns, the thickness of the compact layer is 5-15 microns, and the thickness of the tipping paper for the cigarette is 25-55 microns.
In one embodiment, the plastic layer has a grammage of 15g/m2～23g/m2The gram weight of the enhancement layer is 10g/m2～15g/m2The gram weight of the compact layer is 6g/m2～12g/m2The gram weight of the tipping paper for the cigarette is 35g/m2～50g/m2。
In one embodiment, the reinforcing layer further comprises nano titanium dioxide.
In one embodiment, the content of the nano titanium dioxide in the reinforcing layer is 5 wt% to 10 wt%.
In one embodiment, the graminaceous fibers are selected from one or more of wheat, straw, reed and bamboo fibers; and/or, the cotton fiber is selected from long stapled cotton fiber with the fiber length of more than 33 mm; and/or, the hemp fiber is selected from one or more of hemp fiber, kenaf fiber and mulberry fiber; and/or the wood pulp fiber is selected from one or more of Chinese red pine wood pulp fiber, larch wood pulp fiber, spruce wood pulp fiber, birch wood pulp fiber, poplar wood pulp fiber and maple wood pulp fiber.
The invention also provides a preparation method of the base paper for the cigarette tipping paper capable of preventing hot stamping deformation, which comprises the following steps:
providing pulp containing wood pulp fibers, and obtaining a compact layer through sheet making, squeezing and drying;
providing slurry containing cotton fibers and/or fibrilia, coating the slurry on the surface of the compact layer, and pressing and drying to form a reinforced layer on the compact layer;
providing slurry containing gramineous fiber, coating the slurry on the surface of the enhancement layer, and forming a plastic layer on the enhancement layer through squeezing, drying and calendaring.
In a further aspect of the invention, the cigarette tipping paper comprises the cigarette tipping paper base paper, an ink printing layer and a hot stamping layer, wherein the ink printing layer is formed on the plastic layer of the cigarette tipping paper base paper, and the hot stamping layer is formed on the ink printing layer.
In a further aspect of the invention, a cigarette is provided, which comprises the cigarette tipping paper.
Compared with the prior art, the invention has the following technical effects:
the traditional tipping base paper for cigarettes is usually a layer structure made of one fiber raw material or a mixture of a plurality of fiber raw materials. The raw tipping paper for the cigarette for preventing hot stamping deformation provided by the embodiment of the invention comprises the base paper with the tightness of 0.5g/cm3～1.0g/cm3A plastic layer of (2) and a tightness of 1g/cm3～3g/cm3The reinforcing layer and the tightness of the rubber composition were 0.7g/cm3～1.2g/cm3The compact layer three-layer structure of (2) is characterized in that the fiber raw materials in each layer of structure are different in type. In the hot stamping process, the three-layer structure has different fibers and tightness, the anti-deformation capability of each layer of structure of the paper is different, the three layers of structures can be matched with each other, the plastic layer deforms (including horizontal and vertical directions) under the hot stamping pressure and temperature during hot stamping, the reinforcing layer has strong pressure resistance, and the reinforcing layer and the compact layer can be matched with the plastic layer to offset the horizontal deformation of the fibers, so that only the paper deforms in the vertical direction, and the deformation cannot touch the plastic layer, therefore, the base paper of the cigarette tipping paper can be guaranteed to change only in thickness after hot stamping, and the flatness of a non-printing surface can be still kept, and the paper is prevented from being crushed or deformed (such as the problems of lotus leaf edges, bulges, raised edges, crushing and the like). The base paper of the cigarette tipping paper can easily carry out design and processes such as complex pattern hot stamping, secondary overlapping hot stamping, edge hot stamping and the like, and keeps the flatness of the non-printing surface of the base paper of the cigarette tipping paper, so that the base paper of the cigarette tipping paper can be smoothThe subsequent processes of applying glue to tipping paper, twisting and splicing cigarettes and the like are facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a raw tipping paper for cigarettes with hot stamping deformation prevention according to an embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Other than as shown in the operating examples, or where otherwise indicated, all numbers expressing quantities of ingredients, physical and chemical properties, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". For example, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, and 5, and the like.
The term "smoothness" is one of the print paper quality indicators, and generally refers to roughness, flatness, and compressibility. Tipping paper smoothness affects print quality. The term "smoothness" is an aspect of "smoothness" and refers to the degree to which a sheet of paper is placed horizontally on a smooth flat sheet, and whether the surface is flat or has bumps or warps, and also true bumps or warps. "smoothness" is used to express the macroscopic (or extensive) degree of smoothness of a paper sheet, and "smoothness" is used to express the fine degree of roughness or smoothness of the surface of a paper sheet.
Referring to fig. 1, an embodiment of the present invention provides a raw tipping paper for cigarette with burn-proof deformation, which includes a plastic layer 1, a reinforcing layer 2, and a compact layer 3, which are stacked in sequence. The reinforcing layer 2 is located between the plastic layer 1 and the compact layer 3.
The fiber raw material of the plastic layer 1 is gramineous fiber with the tightness of 0.5g/cm3～1.0g/cm3. The fiber raw material of the enhancement layer 2 is cotton fiber and/or fibrilia, and the tightness is 1g/cm3～3g/cm3The fiber raw material of the compact layer 3 is wood pulp fiber, and the compactness is 0.7g/cm3～1.2g/cm3And the tightness of the enhancement layer is greatest.
The traditional tipping base paper for cigarettes is usually a layer structure made of one fiber raw material or a mixture of a plurality of fiber raw materials. The raw tipping paper for the cigarette for preventing hot stamping deformation provided by the embodiment of the invention comprises the base paper with the tightness of 0.5g/cm3～1.0g/cm3A plastic layer of (2) and a tightness of 1g/cm3～3g/cm3The reinforcing layer and the tightness of the rubber composition were 0.7g/cm3～1.2g/cm3The compact layer three-layer structure of (2) is characterized in that the fiber raw materials in each layer of structure are different in type. In the hot stamping process, the three-layer structure has different fibers and tightness, the anti-deformation capability of each layer of structure of the paper is different, the three layers of structures can be matched with each other, the plastic layer deforms (including horizontal and vertical directions) under the hot stamping pressure and temperature during hot stamping, the reinforcing layer has strong pressure resistance, and the reinforcing layer and the compact layer can be matched with the plastic layer to offset the horizontal deformation of the fibers, so that only the paper deforms in the vertical direction, and the deformation cannot touch the plastic layer, therefore, the base paper of the cigarette tipping paper can be guaranteed to change only in thickness after hot stamping, and the flatness of a non-printing surface can be still kept, and the paper is prevented from being crushed or deformed (such as the problems of lotus leaf edges, bulges, raised edges, crushing and the like). According to the inventionThe cigarette tipping paper base paper can be easily subjected to design and process such as complex pattern hot stamping, secondary overlapping hot stamping, edge hot stamping and the like, and the flatness of the non-printing surface of the cigarette tipping paper base paper is kept, so that subsequent procedures such as tipping paper gluing, cigarette twisting and the like can be smoothly performed.
The graminaceous fibers in the plastic layer 1 may include, but are not limited to, straw, wheat straw, reed, bagasse, bamboo fiber, sorghum straw, corn stover, cotton stalks. Preferably, the gramineous fibers are selected from one or more of wheat, straw, reed and bamboo fibers. More preferably wheat straw fibre.
The plastic layer 1 may contain, in addition to the main component of the fiber raw material, fillers such as calcium carbonate, talc, and sizing agents such as modified starch. The amount of filler and sizing agent may be adjusted and applied according to techniques known to those skilled in the art. For example, the content of the filler in the plastic layer may be 20% to 40%, and the content of the sizing agent may be 5% to 10%.
The plastic layer 1 may have a tightness of 0.5g/cm3～1.0g/cm3Any value in between, including, for example, but not limited to, 0.6g/cm3、0.65g/cm3、0.7g/cm3、0.72g/cm3、0.75g/cm3、0.8g/cm3、0.82g/cm3、0.85g/cm3、0.9g/cm3、0.92g/cm3、0.95g/cm3. In some preferred embodiments, the compliant layer has a tightness of 0.72g/cm3～0.92g/cm3Any value in between.
The thickness of the moldable layer 1 can be anywhere between 20 microns to 30 microns, and can include, for example, but is not limited to, 21 microns, 22 microns, 23 microns, 24 microns, 25 microns, 26 microns, 27 microns, 28 microns, 29 microns.
The plastic layer 1 may have a grammage of 15g/m2～23g/m2Any value in between, for example, may include, but is not limited to, 16g/m2、17g/m2、18g/m2、19g/m2、20g/m2、21g/m2、22g/m2。
In one embodiment, the fiber material of the reinforcement layer 2 is cotton fiber. In another embodiment, the fiber material of the reinforced layer 2 is hemp fiber. In a further embodiment, the fiber material of the reinforced layer 2 is cotton fiber and hemp fiber.
Preferably, the cotton fibers are selected from long staple cotton fibers having a fiber length of 33mm or more. The hemp fiber is selected from one or more of hemp fiber, kenaf fiber and mulberry fiber.
The reinforcing layer 2 may contain, in addition to the main component of the fiber raw material, a filler such as calcium carbonate, talc, and a sizing agent such as modified starch. The amount of filler and sizing agent may be adjusted and applied according to techniques known to those skilled in the art. For example, the content of the filler in the reinforcing layer may be 20% to 40%, and the content of the sizing agent may be 5% to 10%.
Further, in some embodiments, the reinforcing layer 2 may also contain nano-titania. The nano titanium dioxide can further enhance the strength of the enhancement layer and remarkably improve the compressive strength of the base paper of the tipping paper for the cigarette.
In some preferred embodiments, the content of the nano-titania in the enhancement layer 2 is any value between 5 wt% and 10 wt%, including, but not limited to, 5.5 wt%, 6 wt%, 6.5 wt%, 7 wt%, 7.5 wt%, 8 wt%, 8.5 wt%, 9 wt%, 9.5 wt%, for example.
The tightness of the reinforcing layer 2 may be 1g/cm3～3g/cm3Any value in between, including, for example, but not limited to, 1.2g/cm3、1.4g/cm3、1.5g/cm3、1.7g/cm3、1.8g/cm3、2.0g/cm3、2.2g/cm3、2.5g/cm3、2.8g/cm3. In some preferred embodiments, the tightness of the reinforcing layer is 1g/cm3～3g/cm3Any value in between.
The thickness of the reinforcing layer 2 may be any value between 4 microns and 10 microns, and may include, for example, but is not limited to, 4.5 microns, 5 microns, 5.5 microns, 6 microns, 6.5 microns, 7 microns, 7.5 microns, 8 microns, 8.5 microns, 9 microns, 9.5 microns.
The grammage of the reinforcement layer 2 may be 10g/m2～15g/m2Any value in between, for example, may include, but is not limited to, 10.5g/m2、11g/m2、11.5g/m2、12g/m2、12.5g/m2、13g/m2、13.5g/m2、14g/m2、14.5g/m2。
The wood pulp fibers in the densified layer 3 may include softwood pulp fibers and/or hardwood pulp fibers, including, for example, but not limited to, aspen wood pulp fibers, fast-growing poplar pulp fibers, masson pine pulp fibers, larch wood pulp fibers, red pine wood pulp fibers, spruce wood pulp fibers, birch wood pulp fibers, basswood pulp fibers, eucalyptus wood pulp fibers, maple wood pulp fibers. Preferably, the wood pulp fibers are selected from one or more of masson pine pulp fibers, larch pulp fibers, spruce pulp fibers, birch pulp fibers, poplar pulp fibers and maple pulp fibers. More preferably, the mass ratio is (1-3): 1, a mixed fiber of masson pine pulp fiber and birch wood pulp fiber.
The densified layer 3 may contain, in addition to the main component of the fiber raw material, a filler such as calcium carbonate, talc, and a sizing agent such as modified starch. The amount of filler and sizing agent may be adjusted and applied according to techniques known to those skilled in the art. For example, the filler content in the densified layer may be 20% to 40%, and the sizing agent content may be 5% to 10%.
The tightness of the compact layer 3 may be 0.7g/cm3～1.2g/cm3Any value in between, including, for example, but not limited to, 0.75g/cm3、0.8g/cm3、0.85g/cm3、0.9g/cm3、0.95g/cm3、1.0g/cm3、1.05g/cm3、1.1g/cm3. In some preferred embodiments, the densified layer has a tightness of 0.9g/cm3～1.2g/cm3Any value in between.
The thickness of the densified layer 3 can be any value between 5 microns and 15 microns, and can include, but is not limited to, 4 microns, 5 microns, 6 microns, 7 microns, 8 microns, 9 microns, 10 microns, 11 microns, 12 microns, 13 microns, 14 microns, for example.
The grammage of the densified layer 3 may be 6g/m2～12g/m2Any value in between, for example, may include, but is not limited to, 7g/m2、7.5g/m2、8g/m2、8.5g/m2、9g/m2、9.5g/m2、10g/m2、10.5g/m2、11g/m2、11.5g/m2。
The thickness of the base paper of the cigarette tipping paper can be any value between 25 micrometers and 55 micrometers, and the gram weight can be 35g/m2～50g/m2Any value in between.
The tensile strength of the base paper of the cigarette tipping paper is not less than 1.5KN/m, the elongation at break is 1.0-1.5%, the smoothness of the printed surface is 500-800S, the smoothness of the non-printed surface is 80-120S, and the water absorption of the non-printed surface is 20g/m2～35g/m2。
On the other hand, the invention also provides a preparation method of the base paper of the cigarette tipping paper for preventing hot stamping deformation, which comprises the following steps:
s10, providing pulp containing wood pulp fibers, and obtaining a compact layer through sheet making, squeezing and drying;
s20, providing slurry containing cotton fibers and/or hemp fibers, coating the slurry on the surface of the compact layer, and pressing and drying to form a reinforced layer on the compact layer; and
and S30, providing slurry containing gramineous fibers, coating the slurry on the surface of the reinforcing layer, and forming a plastic layer on the reinforcing layer through squeezing, drying and calendaring.
In a further aspect of the invention, the cigarette tipping paper comprises the cigarette tipping paper base paper, an ink printing layer and a hot stamping layer, wherein the ink printing layer is formed on the plastic layer of the cigarette tipping paper base paper, and the hot stamping layer is formed on the ink printing layer.
The cigarette tipping papers may be prepared and used according to conventional methods known in the art.
The ink printing layer is preferably an environment-friendly water-based ink.
The hot stamping layer can adopt an alumite hot stamping process, and can be used for carrying out common hot stamping forms such as hot stamping, secondary overlapping and hot stamping, edge hot stamping and the like of complex patterns.
In still another aspect of the present invention, there is further provided a cigarette comprising said cigarette tipping paper.
The cigarettes may be prepared and used according to conventional methods known in the art.
The following are specific examples. The present invention is intended to be further described in detail to assist those skilled in the art and researchers to further understand the present invention, and the technical conditions and the like do not limit the present invention. Any modification made within the scope of the claims of the present invention is within the scope of the claims of the present invention.
Example 1
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad leaf wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining compact base paper, namely a compact layer, wherein the thickness is controlled to be 10 micrometers, and the gram weight is 9g/m2。
2. Providing 65g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder, 5g of cationic starch and 10g of nano titanium dioxide, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact base paper prepared in the step 1, squeezing, drying, forming a reinforcing layer on the surface of the compact layer, controlling the thickness of the reinforcing layer to be 5 microns, and controlling the gram weight to be 10g/m2。
3. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the enhancement layer prepared in the step 2, squeezing and drying to form a plastic layer on the surface of the enhancement layer, wherein the thickness of the plastic layer is controlled to be 25 micrometers, and the gram weight of the plastic layer is 18g/m2And obtaining a semi-finished product of the plastic layer/the enhancement layer/the compact layer.
4. And performing calendaring treatment on the semi-finished product of the plastic layer/the enhancement layer/the compact layer to obtain the base paper of the tipping paper for the cigarette.
Example 2
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad-leaved wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining compact base paper, namely a compact layer, wherein the thickness is controlled to be 15 micrometers, and the gram weight is 10.5g/m2。
2. Providing 65g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder, 5g of cationic starch and 10g of nano titanium dioxide, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact base paper prepared in the step 1, squeezing and drying, forming a reinforcing layer on the surface of the compact layer, controlling the thickness of the reinforcing layer to be 10 microns, and controlling the gram weight to be 10g/m2。
3. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the enhancement layer prepared in the step 2, squeezing and drying to form a plastic layer on the surface of the enhancement layer, wherein the thickness of the plastic layer is controlled to be 30 micrometers, and the gram weight of the plastic layer is 15g/m2And obtaining a semi-finished product of the plastic layer/the enhancement layer/the compact layer.
4. And performing calendaring treatment on the semi-finished product of the plastic layer/the enhancement layer/the compact layer to obtain the base paper of the tipping paper for the cigarette.
Example 3
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad leaf wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining compact base paper, namely a compact layer, wherein the thickness is controlled to be 10 micrometers, and the gram weight is 12g/m2。
2. Providing 65g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder, 5g of cationic starch and 10g of nano titanium dioxide, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact base paper prepared in the step 1, squeezing, drying, forming a reinforcing layer on the surface of the compact layer, controlling the thickness of the reinforcing layer to be 5 microns, and controlling the gram weight to be 15g/m2。
3. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the enhancement layer prepared in the step 2, squeezing and drying to form a plastic layer on the surface of the enhancement layer, wherein the thickness of the plastic layer is controlled to be 20 micrometers, and the gram weight of the plastic layer is 20g/m2And obtaining a semi-finished product of the plastic layer/the enhancement layer/the compact layer.
4. And performing calendaring treatment on the semi-finished product of the plastic layer/the enhancement layer/the compact layer to obtain the base paper of the tipping paper for the cigarette.
Example 4
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad leaf wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining compact base paper, namely a compact layer, wherein the thickness is controlled to be 5 micrometers, and the gram weight is 6g/m2。
2. Providing 65g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder, 5g of cationic starch and 10g of nano titanium dioxide, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact base paper prepared in the step 1, squeezing, drying, forming a reinforcing layer on the surface of the compact layer, controlling the thickness of the reinforcing layer to be 4 microns, and controlling the gram weight to be 9g/m2。
3. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the enhancement layer prepared in the step 2, squeezing and drying to form a plastic layer on the surface of the enhancement layer, wherein the thickness of the plastic layer is controlled to be 25 micrometers, and the gram weight of the plastic layer is 23g/m2And obtaining a semi-finished product of the plastic layer/the enhancement layer/the compact layer.
4. And performing calendaring treatment on the semi-finished product of the plastic layer/the enhancement layer/the compact layer to obtain the base paper of the tipping paper for the cigarette.
Example 5
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad-leaved wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80 percent, and obtaining compact base paper by sheet making, squeezing and drying,namely a compact layer, the thickness is controlled to be 10 microns, and the gram weight is 9g/m2。
2. Providing 75g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact base paper prepared in the step 1, squeezing and drying, forming a reinforcing layer on the surface of the compact layer, controlling the thickness of the reinforcing layer to be 5 microns and the gram weight to be 10g/m2。
3. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the enhancement layer prepared in the step 2, squeezing and drying to form a plastic layer on the surface of the enhancement layer, wherein the thickness of the plastic layer is controlled to be 25 micrometers, and the gram weight of the plastic layer is 18g/m2And obtaining a semi-finished product of the plastic layer/the enhancement layer/the compact layer.
4. And performing calendaring treatment on the semi-finished product of the plastic layer/the enhancement layer/the compact layer to obtain the base paper of the tipping paper for the cigarette.
Comparative example 1
Providing 75g of masson pine/birch mixed fiber, 75g of long stapled cotton fiber with the fiber length of more than 33mm, 75g of wheat straw fiber slurry, 60g of talcum powder and 15g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining base paper through sheet making, squeezing and drying, wherein the thickness is controlled to be 40 micrometers, and the gram weight is 37g/m2。
Comparative example 2
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad leaf wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining compact base paper, namely a compact layer, wherein the thickness is controlled to be 10 micrometers, and the gram weight is 9g/m2。
2. Providing 65g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder, 5g of cationic starch and 10g of nano titanium dioxide, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact base paper prepared in the step 1, squeezing, drying, forming a reinforcing layer on the surface of the compact layer, controlling the thickness of the reinforcing layer to be 5 microns, and controlling the gram weight to be 10g/m2Get the enhancement layer-And compacting the semi-finished product of the layer.
4. And performing calendaring treatment on the semi-finished product of the enhancement layer/compact layer to obtain the base paper of the tipping paper for the cigarette.
Comparative example 3
1. Providing 65g of long stapled cotton fiber with the fiber length of more than 33mm, 20g of talcum powder, 5g of cationic starch and 10g of nano titanium dioxide, adding water to prepare slurry with the solid content of 70%, and obtaining a reinforcing layer through sheet making, squeezing and drying, wherein the thickness of the reinforcing layer is controlled to be 5 micrometers, and the gram weight is 10g/m2。
2. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the enhancement layer prepared in the step 1, squeezing and drying to form a plastic layer on the surface of the enhancement layer, wherein the thickness of the plastic layer is controlled to be 25 micrometers, and the gram weight of the plastic layer is 18g/m2And obtaining a plastic layer/enhancement layer semi-finished product.
3. And performing calendaring treatment on the semi-finished product of the plastic layer/the enhancement layer to obtain the base paper of the tipping paper for the cigarette.
Comparative example 4
1. Providing 75g of masson pine/birch mixed fiber (the mass ratio of masson pine needle wood to birch broad leaf wood is 3: 2), 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 80%, and obtaining compact base paper, namely a compact layer, wherein the thickness is controlled to be 10 micrometers, and the gram weight is 9g/m2。
2. Providing 75g of wheat straw fiber slurry, 20g of talcum powder and 5g of cationic starch, adding water to prepare slurry with the solid content of 70%, uniformly coating the slurry on the surface of the compact layer prepared in the step 1, squeezing and drying to form a plastic layer on the surface of the compact layer, wherein the thickness of the plastic layer is controlled to be 25 micrometers, and the gram weight of the plastic layer is 18g/m2And obtaining a semi-finished product of the plastic layer/compact layer.
3. And performing calendaring treatment on the semi-finished product of the plastic layer/compact layer to obtain the base paper of the tipping paper for the cigarette.
The following table 1 shows the various parameters of the preparation processes of examples 1 to 5 and comparative examples 1 to 4:
TABLE 1
The base paper of the tipping papers prepared in the examples 1 to 5 and the comparative examples 1 to 4 is firstly printed with ink, and the dry coating amount of the printing is 2.0g/m2Then, carrying out thermoprinting deformation performance test under the test conditions of 120 ℃ of temperature, 0.3MPa of pressure and 0.5s of pressing time, inspecting the concave-convex degree of the thermoprinting part corresponding to the thermoprinting part of the printing surface and the non-printing surface of the paper, wherein the test result is shown in table 2:
TABLE 2
As can be seen from the above table 2, the comparison between the tipping papers for cigarettes prepared in examples 1 to 5 and comparative examples 1 to 4 can enhance the flatness of the non-printing surface by the cooperation of the three-layer structure of the plastic layer, the reinforcing layer and the compact layer. After the tipping paper for the cigarettes prepared in the examples 1-5 is subjected to hot stamping, the tipping paper is good in appearance, and the problems of lotus leaf edges, bulges, edge warping, crushing and the like are avoided.
As can be seen by comparing the tipping papers for cigarettes prepared in examples 1 and 4 and examples 2 and 3, the tightness of the plastic layer is 0.7g/cm3～0.9g/cm3The tightness of the reinforced layer is 2g/cm3～3g/cm3The compactness of the compact layer is 0.9g/cm3～1.2g/cm3Cigarette tipping papers within the range (i.e., examples 1 and 4) have more excellent non-printing surface flatness after hot stamping.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a prevent cigarette of scalding printing deformation connects paper body paper which characterized in that, including plastic layer, enhancement layer and the compact layer that stacks gradually, wherein, the fiber raw materials on plastic layer is the fibre of Gramineae, and the tightness is 0.5g/cm3～1.0g/cm3The fiber raw material of the reinforced layer is cotton fiber and/or fibrilia, and the tightness is 1g/cm3～3g/cm3The fiber raw material of the compact layer is wood pulp fiber, and the compactness is 0.7g/cm3～1.2g/cm3And the tightness of the enhancement layer is greatest.
2. The raw tipping base paper for cigarette preventing hot stamping deformation according to claim 1, wherein the tightness of the plastic layer is 0.7g/cm3～0.9g/cm3The tightness of the reinforced layer is 2g/cm3～3g/cm3The compactness of the compact layer is 0.9g/cm3～1.2g/cm3。
3. The raw tipping paper for cigarettes with hot stamping deformation prevention function according to claim 1, wherein the thickness of the plastic layer is 20-30 microns, the thickness of the reinforcing layer is 4-10 microns, the thickness of the compact layer is 5-15 microns, and the thickness of the raw tipping paper for cigarettes is 25-55 microns.
4. The raw tipping paper for cigarette with hot stamping deformation prevention according to claim 3, wherein the gram weight of the plastic layer is 15g/m2～23g/m2The gram weight of the enhancement layer is 10g/m2～15g/m2The gram weight of the compact layer is 6g/m2～12g/m2The gram weight of the base paper of the tipping paper for the cigarette is 35g/m2～50g/m2。
5. The raw tipping paper for the cigarette preventing hot stamping deformation according to any one of claims 1 to 4, wherein the enhancement layer further contains nano titanium dioxide.
6. The raw tipping paper for cigarettes with hot stamping deformation prevention according to claim 5, wherein the content of nano titanium dioxide in the reinforcing layer is 5 wt% to 10 wt%.
7. The raw tipping paper for the cigarette preventing hot stamping deformation according to any one of claims 1 to 4, wherein the gramineous fiber is selected from one or more of wheat, straw, reed and bamboo fiber; and/or, the cotton fiber is selected from long stapled cotton fiber with the fiber length of more than 33 mm; and/or, the hemp fiber is selected from one or more of hemp fiber, kenaf fiber and mulberry fiber; and/or the wood pulp fiber is selected from one or more of Chinese red pine wood pulp fiber, larch wood pulp fiber, spruce wood pulp fiber, birch wood pulp fiber, poplar wood pulp fiber and maple wood pulp fiber.
8. A preparation method of the burn-proof printing deformation-proof base tipping paper for the cigarettes as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
providing pulp containing wood pulp fibers, and obtaining a compact layer through sheet making, squeezing and drying;
providing slurry containing cotton fibers and/or fibrilia, coating the slurry on the surface of the compact layer, and pressing and drying to form a reinforced layer on the compact layer;
providing slurry containing gramineous fiber, coating the slurry on the surface of the enhancement layer, and forming a plastic layer on the enhancement layer through squeezing, drying and calendaring.
9. A tipping paper for cigarettes, characterized by comprising the tipping base paper for cigarettes as claimed in any one of claims 1 to 7, an ink printing layer formed on the plastic layer of the tipping base paper for cigarettes, and a hot stamping layer formed on the ink printing layer.
10. A cigarette comprising the cigarette tipping paper of claim 9.
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