CN115652693B - Odor-removing environment-friendly lining paper and production process thereof - Google Patents
Odor-removing environment-friendly lining paper and production process thereof Download PDFInfo
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Abstract
The application relates to the field of packaging materials, and particularly discloses odor-free environment-friendly lining paper and a production process thereof, wherein the lining paper comprises a raw paper layer, an aluminized layer and an ink layer, the aluminized layer is arranged between the raw paper layer and the ink layer, and the ink raw materials of the ink layer comprise the following components in parts by weight: 25-35 parts of sulfonated polyester resin, 1-2.25 parts of boric acid, 2-2.95 parts of borax, 0.75-1.5 parts of graphene, 1-1.78 parts of cosolvent, 0.18-0.32 part of defoamer and 50-74 parts of water. Therefore, the lining paper obtained by the application has low ammonia content and good barrier property.
Description
Technical Field
The application relates to the field of packaging materials, in particular to odor-removing environment-friendly lining paper and a production process thereof.
Background
With the continuous progress of society, various types of packaging materials are introduced into the market. As an important packaging material, lining paper is increasingly important for its functions, environmental protection and safety and hygienic properties.
The common lining paper comprises aluminum foil paper, aluminized paper and the like, and the aluminum foil paper has good barrier property, but the aluminum foil refining needs high energy consumption, is difficult to degrade in a natural state and does not meet the environment-friendly concept. The aluminum consumption in the aluminized paper is about 1/200 of that of the aluminized paper, and the aluminized paper is easy to degrade. However, the surface layer of the material of the aluminized paper needs to be colored or coated, the original aluminized printing can be dissolved in a solvent due to the dissolution of dye, and most of the printing ink for the aluminized paper is solvent type printing ink and does not accord with the environmental protection concept.
Therefore, the common ink for aluminized paper uses water-based acrylic resin as a main material, mixes the water-based acrylic resin with ammonia water or organic amine, and then mixes the mixture with raw materials such as organic water-soluble dye and water to obtain the water-soluble aluminized paper ink.
However, as the performance requirements of the lining paper in the market are increased, on one hand, the barrier performance of the lining paper needs to be further improved, and on the other hand, the water-soluble lining paper ink is environment-friendly, but still has amine smell, so that the quality of the packaged article is affected.
Disclosure of Invention
The application provides an odor-removing environment-friendly lining paper and a production process thereof. The lining paper avoids using amine substances, reduces the odor of products, and also increases the barrier property.
In a first aspect, the application provides an odor-free environment-friendly lining paper, which adopts the following technical scheme:
the odor-removing environment-friendly lining paper comprises a raw paper layer, an aluminum plating layer and an ink layer, wherein the aluminum plating layer is arranged between the raw paper layer and the ink layer, and the ink raw materials of the ink layer comprise the following components in parts by weight: 25-35 parts of sulfonated polyester resin, 1-2.25 parts of boric acid, 2-2.95 parts of borax, 0.75-1.5 parts of graphene, 1-1.78 parts of cosolvent, 0.18-0.32 part of defoamer and 50-74 parts of water.
By adopting the technical scheme, the cosolvent and the defoamer are matched, so that the sulfonated polyester resin and the water are fully compatible. Then, the boric acid, the borax and the graphene act, so that the borax and the graphene can be well dispersed in an ink system, and the borax and the graphene can be fully combined with the sulfonated polyester resin, so that the stability of the ink system is improved, and the ink has good barrier property; therefore, the lining paper obtained by the application has low ammonia content and good barrier property.
In one embodiment, the co-solvent comprises ethylene glycol monobutyl ether.
By adopting the technical scheme, the ethylene glycol monobutyl ether is more favorable for dissolving the sulfonated polyester resin in water, and the sulfonated polyester resin, the borax and the graphene are better mixed together by adding the ethylene glycol monobutyl ether, so that the ink system is more stable, the ink can be well compounded on an aluminized layer, and the barrier property of the lining paper is improved.
In a specific embodiment, the ink layer raw materials comprise the following components in parts by weight: 31.5 parts of sulfonated polyester resin, 1.75 parts of boric acid, 2.75 parts of borax, 1.25 parts of graphene, 1.5 parts of cosolvent, 0.25 part of defoamer and 61 parts of water.
In one embodiment, the ink preparation method of the ink layer comprises the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into water at 80-95 ℃ and stirring for dissolution to obtain the sulfonated polyester coating;
boric acid is added into the sulfonated polyester coating, borax and graphene are added after dissolution, and the ink is obtained after stirring and mixing uniformly.
By adopting the technical scheme, the sulfonated polyester resin can be well dispersed in water, and the borax and the graphene are better added into the ink system, so that the ink has good barrier property.
In one embodiment, the ink of the ink layer further comprises a pigment as a raw material; in the preparation of the ink layer, boric acid is added into the sulfonated polyester coating, borax and graphene are added after dissolution, and then pigment is added, and the ink is obtained after uniform stirring.
In one embodiment, the raw paper layer is Tao Tuzhi.
By adopting the technical scheme, the clay paper has excellent barrier property, can be well combined with an aluminized layer, and improves the barrier property of the lining paper.
In a second aspect, the application provides a production process of an odor-free environment-friendly lining paper, which adopts the following technical scheme:
a production process of an odor-free environment-friendly lining paper comprises the following steps:
aluminizing: aluminizing the raw paper layer to form an aluminized layer to obtain an intermediate product of the lining paper;
printing ink: printing ink on the aluminized layer of the lining paper intermediate product to form an ink layer, thereby obtaining the lining paper.
In a specific embodiment, in the aluminizing step, the aluminized layer has a thickness of 37-39nm.
By adopting the technical scheme, the aluminized layer is moderate in thickness, and can be better combined with the printing ink layer and the raw paper layer, so that the lining paper maintains the barrier property and the practical property.
In a specific embodiment, the temperature is controlled between 120-130 ℃ during the step of printing the ink.
In a specific embodiment, in the step of printing ink, the inking amount is 1 to 1.2g/m 2 。
By adopting the technical scheme, all components in the ink are better fused with each other and are adhered to the aluminized layer, so that the ink layer with uniform thickness and excellent performance is obtained, and the service performance of the lining paper is improved.
In summary, the application has the following beneficial effects:
1. the application discloses an odor-removing environment-friendly lining paper and a production process thereof, wherein the odor-removing environment-friendly lining paper comprises a raw paper layer, an aluminized layer and an ink layer, and the lining paper disclosed by the application is used with clay paper and ammoniated water-based high-barrier ink, so that the odor-removing environment-friendly lining paper is not only tasteless, but also is environment-friendly, and the barrier property of the lining paper is increased.
2. The application applies the water-based odor-removing ink to the production of lining paper, which not only omits the step of removing the peculiar smell of the lining paper by blowing and airing, shortens the delivery period of the product, but also avoids the problem of uneven water caused by blowing and airing.
3. According to the ammoniated-free lining paper, after the product is packaged and transported in a sealing way, the peculiar smell accumulated by the lining paper due to unpacking is reduced, and the possible adverse effect of amine substances on the product after the product is packaged is reduced.
4. The clay paper and the high-barrier water-based ink in the application enhance the barrier property of the lining paper and can effectively prolong the service life of the packaged product.
Detailed Description
The present application will be described in further detail with reference to examples.
In this embodiment, all of them are commercially available, unless otherwise specified. The method comprises the following steps: the sulfonated polyester resin is Eastek 1400; the graphene is selected from Shenzhen Zhen Jizhan materials science and technology Co., ltd, and the model is GP-M05.
Ink preparation example
Preparation example 1
Preparation example 1 provides an ink for an odor-free environment-friendly lining paper, which comprises the following raw materials: 31.5kg of sulfonated polyester resin, 1.75kg of boric acid, 2.75kg of borax, 1.25kg of graphene, 1.5kg of cosolvent, 0.25kg of defoamer and 61kg of water. Wherein the cosolvent is ethylene glycol monobutyl ether, and the defoamer is defoamer BYK.
Preparation example 1 also provides an ink preparation method comprising the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into hot water at 90 ℃, stirring and dissolving the mixture, and obtaining the sulfonated polyester coating after complete dissolution; and then adding boric acid into the sulfonated polyester coating, stirring and dissolving, adding borax and graphene, and stirring and uniformly mixing to obtain the printing ink.
PREPARATION EXAMPLES 2 to 5
Preparation examples 2 to 5 differ from preparation example 1 in the content of each component of the raw materials, specifically as shown in Table 1.
Table 1 raw material content tables (unit: kg) of preparation examples 1 to 5.
Preparation example 9
Preparation 9 differs from preparation 1 in that: the cosolvent is sodium salicylate.
Preparation example 10
Preparation 10 and preparation 1 differ in that: the raw materials of the ink layer also comprise 0.2kg of pigment, and the pigment is pigment red 122; in the preparation of the ink layer, boric acid is added into the sulfonated polyester coating, borax and graphene are added after dissolution, and then pigment is added, and the ink is obtained after uniform stirring.
Comparative preparation of ink
Comparative preparation example 1
Comparative preparation 1 differs from preparation 1 in that: boric acid is not added.
The ink preparation method comprises the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into hot water at 90 ℃, stirring and dissolving the mixture, and obtaining the sulfonated polyester coating after complete dissolution; and then adding borax and graphene into the sulfonated polyester coating, and stirring and uniformly mixing to obtain the printing ink.
Comparative preparation example 2
Comparative preparation 2 differs from preparation 1 in that: borax is not added.
The ink preparation method comprises the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into hot water at 90 ℃, stirring and dissolving the mixture, and obtaining the sulfonated polyester coating after complete dissolution; and then adding boric acid into the sulfonated polyester coating, stirring and dissolving, adding graphene, and stirring and uniformly mixing to obtain the printing ink.
Comparative preparation example 3
Comparative preparation 3 differs from preparation 1 in that: no graphene was added.
The ink preparation method comprises the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into hot water at 90 ℃, stirring and dissolving the mixture, and obtaining the sulfonated polyester coating after complete dissolution; and then adding boric acid into the sulfonated polyester coating, stirring and dissolving, adding borax, and stirring and uniformly mixing to obtain the printing ink.
Comparative preparation example 4
Comparative preparation 4 differs from preparation 1 in that: borax and graphene are not added. The ink preparation method comprises the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into hot water at 90 ℃, stirring and dissolving the mixture, and obtaining the sulfonated polyester coating after complete dissolution; and then adding boric acid into the sulfonated polyester coating, and stirring and uniformly mixing to obtain the printing ink.
Examples
Example 1
Embodiment 1 provides an odor removal environment-friendly liner paper, which comprises a raw paper layer, an aluminized layer and an ink layer, wherein the aluminized layer is combined between the raw paper layer and the ink layer.
A production process of an odor-free environment-friendly lining paper comprises the following steps:
aluminizing: using a vacuum aluminizing machine to aluminize the raw paper layer, controlling the machine speed to be 230-250m/min, and forming an aluminized layer with the thickness of 37-39nm at the machine speed of 250m/min in the embodiment to obtain an intermediate product of the lining paper;
printing ink: printing ink on an aluminized layer of an intermediate product of the lining paper by using a printer to form an ink layer, controlling the machine speed to be 100-110m/min, controlling the machine speed to be 110m/min in the embodiment, controlling the oven temperature to be 120-130 ℃, controlling the depth of a gravure printing roller to be 5 threads, and controlling the inking amount to be 1.0/m 2 And obtaining the lining paper. The ink was the ink prepared in preparation example 1.
Examples 2 to 10
Examples 2-10 differ from example 1 in that: the ink sources used were varied and are shown in Table 2.
TABLE 2 ink Source Table for examples 1-10
| Examples | Ink source |
| Example 1 | Preparation example 1 |
| Example 2 | Preparation example 2 |
| Example 3 | Preparation example 3 |
| Example 4 | Preparation example 4 |
| Example 5 | Preparation example 5 |
| Example 6 | Preparation example 6 |
| Example 7 | Preparation example 7 |
| Example 8 | Preparation example 8 |
| Example 9 | Preparation example 9 |
| Example 10 | Preparation example 10 |
Example 11
Example 11 differs from example 1 in that: the inking level of example 11 was 1.2g/m 2 。
Example 12
Example 12 differs from example 1 in that: the inking level of example 12 was 1.4g/m 2 。
Example 13
Example 13 differs from example 1 in that: the inking level of example 13 was 0.8g/m 2 。
Example 14
Example 14 differs from example 1 in that: the oven temperature for example 14 was 140-145 ℃.
Comparative example
Comparative example 1
Comparative example 1 differs from example 1 in that: the ink of comparative example 1 was derived from comparative preparation example 1.
Comparative example 2
Comparative example 2 is different from example 1 in that: the ink of comparative example 2 was derived from comparative preparation example 2.
Comparative example 3
Comparative example 3 is different from example 1 in that: the ink of comparative example 3 was derived from comparative preparation example 3.
Comparative example 4
Comparative example 4 differs from example 1 in that: the ink of comparative example 4 was derived from comparative preparation example 4.
Comparative example 5
Comparative example 5 discloses an ink for lining paper.
The ink comprises the following raw materials: 30kg of aqueous acrylic resin (CAS No.: 25767-39-9), 8.5kg of ammonia water, 36kg of water, 10kg of pure acrylic emulsion and 1kg of defoamer, wherein the defoamer is defoamer BYK; then preparing the printing ink according to the raw materials and the proportion by adopting the following steps:
(1) Amination of aqueous acrylic resin with triethylamine at 60 ℃ to obtain water-soluble resin;
(2) Mixing water-soluble resin and water, and shearing and emulsifying the materials at the speed of 3000 rpm;
(3) Filtering the sheared and dispersed material, mixing with pure acrylic emulsion and defoamer, and stirring at a speed of 500 rpm to obtain the printing ink.
Comparative example 5 also provides a method of making a liner paper comprising the steps of:
aluminizing: aluminizing the raw paper layer by using a vacuum aluminizing machine, controlling the machine speed at 250m/min, forming an aluminized layer with the thickness of 37-39nm, and obtaining an intermediate product of the lining paper;
printing ink: printing ink on the aluminized layer of the intermediate product of the lining paper by using a printer to form an ink layer, controlling the machine speed at 110m/min, controlling the temperature of an oven at 120-130 ℃ and controlling the depth of a gravure printing roller at5 threads, and the inking quantity is controlled to be 1.0/m 2 And obtaining the lining paper.
And (3) performance detection:
the lining papers prepared in examples 1 to 14 and comparative examples 1 to 6 were subjected to ammonia content detection and barrier property detection, and the specific operations were as follows:
1. and (3) ammonia content detection: the ammonia content of the lining paper is detected according to the ion chromatography for measuring ammonia in tobacco and tobacco products in YQ/T19-2012, china tobacco general Co-Ltd. The analysis steps are as follows:
a sample of 250mg was prepared and its moisture content was measured to the nearest 0.1mg according to the method of YC/T31-1996 preparation of samples of tobacco and tobacco products and determination of moisture. 100mL of dilute sulfuric acid solution with the concentration of 0.0125mol/L is accurately added into a 250mL triangular flask with a plug, the plug is covered, the shaking extraction is carried out for 60min on a shaker, and the shaking frequency is regulated to 160r/min. The extract was filtered with quick qualitative filter paper, the previous 2mL to 3mL of filtrate was discarded, the subsequent filtrate was collected and filtered using a 0.45 μm aqueous filter membrane, and the filtrate was placed in a chromatographic flask for testing. The liquid to be measured should be subjected to chromatographic analysis within 12 hours, and the ammonia content is calculated.
The ammonia content in dry basis is calculated according to formula (1):
wherein:
m-the ammonia content in mass percent (%) on a dry basis;
c, measuring concentration of the liquid to be measured, wherein the unit is micrograms per milliliter (mug/mL);
v-volume of extract in milliliters (mL);
17.03——NH 3 is of the formula (I);
m-the mass of the sample in milligrams (mg);
w-the mass fraction of sample moisture;
18.04——NH 4 + is a formula weight of (2).
(2) And (3) barrier property detection: the barrier properties of the liner were measured according to GB/T2679.2-2015 method for measuring weight of moisture permeability of sheet Material (moisture permeable cup). The detection conditions are as follows: the temperature is 23+/-1 ℃ and the humidity is 50+/-2%.
The detection results are shown in Table 3.
Lining paper performance detection meter
As can be seen from the detection results of the embodiment 1 and the comparative example 5, the lining paper prepared by the method has low ammonia content, is very environment-friendly, reduces ammonia smell of the packaging paper, and improves quality of packaged articles. Furthermore, as can be seen from the results of examples 1 to 3, the lining paper of the present application also has excellent barrier properties.
As can be seen from a comparison of example 1 and comparative examples 1-2, the barrier properties of the liner paper were greatly reduced without using graphene and borax, which suggests that graphene and borax may act as barriers in the ink system. However, in comparative example 3, the barrier property of the liner paper is reduced to a larger extent after the graphene and the borax are not used at the same time, which indicates that a certain matching relationship between the graphene and the borax is possible.
In addition, as shown in the test result of example 4, when the amount of boric acid used is reduced, the barrier property is reduced, which is probably because boric acid affects the dissolution and dispersion of graphene and borax in the ink system, and as shown in the test result of example 5, when the amount of boric acid used is increased, although the barrier property is better than that of example 4, the overall barrier property tends to be reduced, compared with that of example 1, which shows that the amount of boric acid used may have a certain physical or chemical effect with other components, and the appropriate amount of boric acid can better promote the interaction of graphene and borax with other components.
Also, it was found from the properties of comparative example 6 and example 7 that, although the borax addition amount of example 6 was more compared with example 1 and the graphene addition amount of example 7 was more than example 1, the barrier properties of examples 6 and 7 tended to decrease compared with example 1 and example 7 decreased more. This illustrates that although graphene and borax may act as barriers, it does not represent that the more and better the amount of graphene and borax added, the interactions between graphene, borax and other components need to be considered. In addition, the barrier property of comparative example 8 shows that the performance of example 8 has a greater tendency to change, and also shows that there is a complex compounding effect between graphene and borax, and between graphene, borax and other components. The components in the ink system are matched with each other, so that the lining paper has good barrier property.
From the test results of example 9, it was found that the barrier properties were greatly reduced after the co-solvent was changed, indicating that the co-solvent not only affected the dissolution of the sulfonated polyester resin, but also affected the interaction of other components in the ink system. Moreover, as can be seen from the detection results of example 10, the ink system of the present application can be added with pigments according to the requirements, and the performance of the ink itself is not affected.
From the test results of examples 11 to 13, it was found that the impact of the inking amount on the barrier property of the liner paper was not very great; however, when the inking amount was too small, the barrier properties of example 13 were reduced more, indicating that the inking amount could not be too low. However, the barrier properties were reduced after the inking level was increased to 1.4, probably because the bonding effect between the ink layer and the aluminized layer was affected. Therefore, the application has reasonable inking quantity control. Meanwhile, as is clear from the test results of example 12, the ink application temperature has a certain influence on the barrier property of the lining paper.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (8)
1. An odor-free environment-friendly lining paper is characterized in that: the aluminum-plated paper comprises a raw paper layer, an aluminum-plated layer and an ink layer, wherein the aluminum-plated layer is arranged between the raw paper layer and the ink layer, and the ink raw material of the ink layer comprises the following components in parts by weight: 25-35 parts of sulfonated polyester resin, 1-2.25 parts of boric acid, 2-2.95 parts of borax, 0.75-1.5 parts of graphene, 1-1.78 parts of cosolvent, 0.18-0.32 part of defoamer and 50-74 parts of water;
the cosolvent comprises ethylene glycol monobutyl ether;
the raw paper layer is Tao Tuzhi.
2. An odor removal environmental protection liner according to claim 1, wherein: the ink layer comprises the following raw materials in parts by weight: 31.5 parts of sulfonated polyester resin, 1.75 parts of boric acid, 2.75 parts of borax, 1.25 parts of graphene, 1.5 parts of cosolvent, 0.25 part of defoamer and 61 parts of water.
3. An odor removal environmental protection liner according to claim 1, wherein: the ink preparation method of the ink layer comprises the following steps:
adding the sulfonated polyester resin, the cosolvent and the defoamer into water at 80-95 ℃ and stirring for dissolution to obtain the sulfonated polyester coating;
boric acid is added into the sulfonated polyester coating, borax and graphene are added after dissolution, and the ink is obtained after stirring and mixing uniformly.
4. A odor removal environmental protection liner as defined in claim 3, wherein: the raw materials of the ink layer also comprise pigment; in the preparation of the ink layer, boric acid is added into the sulfonated polyester coating, borax and graphene are added after dissolution, and then pigment is added, and the ink is obtained after uniform stirring.
5. A process for producing a deodorizing environmental-friendly lining paper as set forth in any one of claims 1 to 4, characterized in that: the method comprises the following steps:
aluminizing: aluminizing the raw paper layer to form an aluminized layer to obtain an intermediate product of the lining paper;
printing ink: printing ink on the aluminized layer of the lining paper intermediate product to form an ink layer, thereby obtaining the lining paper.
6. The process for producing the odor-free environment-friendly lining paper according to claim 5, which is characterized in that: in the aluminizing step, the thickness of the aluminized layer is 37-39nm.
7. The process for producing the odor-free environment-friendly lining paper according to claim 5, which is characterized in that: in the step of printing ink, the temperature is controlled between 120 ℃ and 130 ℃.
8. The process for producing the odor-free environment-friendly lining paper according to claim 5, which is characterized in that: in the step of printing ink, the inking amount is 1-1.2g/m 2 。
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| US9644105B2 (en) * | 2013-12-23 | 2017-05-09 | Xerox Corporation | Aqueous dispersible polymer inks |
| US9617437B2 (en) * | 2015-05-07 | 2017-04-11 | Xerox Corporation | Anti-bacterial aqueous ink compositions comprising self-dispersed sulfonated polyester-silver nanoparticle composites |
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