Glue material process for adhesive paper made of edible materials

Abstract

The invention relates to the technical field of preparation of a sizing material for adhesive paper from an edible material, in particular to a process for preparing the sizing material for the adhesive paper from the edible material, which comprises the following steps of: preparing, injecting carrier water, putting carrier powder, adding caustic soda liquor, adding main body water, adding a modifier, gelatinizing and mixing. In the process, a paste supply mechanism and a pit supply mechanism are respectively adopted for production, raw materials are fully and uniformly mixed, starch-containing carrier powder is modified under the action of caustic soda liquor through a modifier and borax with specific raw material dosage, and the carrier powder is composed of one or more of corn starch, flour and glutinous rice flour. The modifier comprises an anhydride compound, and a production process is combined, so that the sizing material is applied to batch production of the adhesive, better production quality can be ensured, the phenomena of falling, residual adhesive, damage to the surface of an adhered object and the like in the use process are reduced, and the practicability of the adhesive is improved.

Description

Technical Field

[0001] The present application relates to the field of environmentally friendly adhesives, and more specifically, to a process for producing adhesives for paper made of edible materials. Background Art

[0002] In the food manufacturing industry, especially in the field of paper packaging, various adhesive materials are usually used to produce adhesive papers in order to improve product performance. These adhesive papers are widely used in food packaging, label stickers and other occasions that require adhesive properties. With the continuous growth of market demand and the continuous advancement of technology, higher requirements are put forward for adhesives for adhesive papers, especially in terms of adhesion stability, temperature resistance and environmental protection performance. Therefore, the research and application of adhesives for adhesive papers made of edible materials has become a hot topic in the industry.

[0003] The production workshop consists of a glue production line and an adhesive production line. Usually, the production line is continuous. After the glue is produced, it will be transferred to the adhesive production line to produce adhesives. However, the adhesive surface of the adhesive produced in batches is unstable. Specifically, in actual use, due to inconsistent adhesion performance or uneven viscosity, different adhesives are used on the same sample, which is prone to over-stickiness or non-stickiness. Over-stickiness will make it difficult to fall off the adhesive, or when it falls off, it is easy to leave residual glue or damage the surface of the adherend. Non-stickiness is mainly reflected in easy falling off. This not only affects the use effect of the adhesive, but also reduces the qualified rate of the product. In addition, when the adhesive is used in a high temperature and high humidity environment, degumming may also occur, further limiting its scope of application. Summary of the invention

[0004] In order to obtain better stability of the adhesive and avoid residual adhesive, reduce the phenomenon of mass-produced adhesives falling off, residual adhesive or damage to the surface of the adhered object during use, and improve the qualification rate and practicality of adhesive products, the present application provides a process for adhesives made of edible materials.

[0005] A process for making adhesive for sticky paper made of edible materials, which is prepared by the following method: 1) Preparation: Arrange the alkali, borax and carrier powder neatly; Injecting carrier water: Add 550-600 parts of water by weight into the mixing mechanism and heat to 33-35°C to obtain carrier water; Adding carrier powder: according to weight, weigh 20-30 parts of carrier powder and put it into the pit supply mechanism, and 20-30 parts of carrier powder and put it into the paste supply mechanism; 2) Adding caustic soda solution: according to weight parts, add 20-30 parts of caustic soda solution to the pit supply mechanism, and then add 20-40 parts of caustic soda solution to the paste supply mechanism, and stir them evenly; 3) Add main water: 550-600 parts for the pit mechanism and 500-600 parts for the paste mechanism according to weight; 4) Adding modifier: According to weight, add 5-8 parts of modifier to the paste supply mechanism and 4-7 parts of modifier to the pit supply mechanism, and then stir them evenly; 5) Gelatinization: Gelatinize the materials in the paste supply mechanism and the pit supply mechanism respectively; 6) Add 2-8 parts of borax, all the materials of the pit supply mechanism in step 5) and all the materials of the paste supply mechanism to the mixing mechanism in step 1) by weight, stir evenly, and obtain a rubber material; The carrier powder is one or more of corn starch, flour and glutinous rice flour; and the modifier is an acid anhydride compound.

[0006] By adopting the above technical solution, in the process production, the present application can achieve full and uniform mixing of materials to form a high-quality and stable rubber compound. Specifically, by accurately controlling the temperature and amount of the carrier water, it is ensured that the carrier powder can be fully dissolved and evenly dispersed, thereby laying a good foundation for the subsequent steps. After adding caustic soda solution and modifier, by controlling the stirring time and temperature, the anhydride compound and the starch in the carrier powder are fully reacted, thereby enhancing the bonding performance of the rubber compound.

[0007] During the gelatinization process, the materials in the pit supply mechanism and the paste supply mechanism are gelatinized separately, thereby further improving the uniformity and stability of the adhesive. When the adhesive is finally used in the production of adhesive paper, it can work at a better peeling strength, avoiding the problem of excessive or non-stickiness of the adhesive, thereby significantly improving the qualified rate of the adhesive paper, and in the process of peeling the adhesive paper, the adhesive layer on the surface is not easy to fall off, and the surface of the adherend is not easily damaged.

[0008] In summary, the present application adopts a paste supply mechanism and a pit supply mechanism to produce the glue respectively, which can ensure that the materials are fully mixed and evenly in a relatively short time to form a stable glue. The uniformity, stability and fluidity of the glue can be maintained during transportation, making it easy to spray it on the paper surface. The glue layer formed after curing can maintain stable adhesion under high temperature and high humidity, reduce shedding, and avoid residual glue on the food surface or causing defects on the food surface when tearing, thereby improving its practicality and quality.

[0009] Specifically, the adhesive process for making adhesive papers from edible materials of the present application is designed to cooperate with the mass production of adhesive papers, and can ensure the consistency of the quality of each batch of adhesive papers during the mass production of adhesive papers, thereby improving the qualified rate of adhesive papers.

[0010] Moreover, the adhesive paper of the present application is environmentally friendly and healthy because it uses environmentally friendly materials such as starch; the adhesive paper produced by the adhesive produced by the process of the present application is mainly used in the field of food and food assurance. For example, the adhesive paper is used as label paper or decorative paper and adhered to the surface of steamed buns, steamed buns, cakes, bread, dishes or food packaging bags, etc., for decoration or publicity. When eating food, the adhesive paper can be peeled off. If it falls off during the process of sticking the sticker, its practicality is reduced. When peeling the adhesive paper, there is a phenomenon of residual glue on the food, which affects the appearance and taste, and causes the surface of the food to be incomplete or damaged, which reduces the integrity and appearance of the food. The adhesive produced by the process of the present application can ensure the production quality of the adhesive paper, and can also make it avoid falling off, residual glue or damage to the surface of the food when it is used for food, etc., thereby improving the practicality and quality of the adhesive paper.

[0011] Preferably, the stirring time in step 2) is 10-20 min.

[0012] By adopting the above technical scheme, the caustic soda liquid can be fully dissolved and evenly distributed in the pit supply mechanism and the paste supply mechanism, ensuring the consistency and stability of the material in the subsequent gelatinization process, avoiding uneven viscosity and poor gelatinization caused by insufficient stirring, thereby improving the quality stability of the adhesive and the qualified rate of adhesive paper.

[0013] Preferably, the caustic soda solution in step 2) is obtained by mixing solid caustic soda and water in a weight ratio of 1.8-2.0:1.

[0014] By adopting the above technical scheme, solid caustic soda and water are mixed in a weight ratio of 1.8-2.0:1 to obtain caustic soda liquid, which has better uniformity and stability, further enhances the stability and adhesion performance of the adhesive, effectively solves the problem of unstable adhesive surface on the adhesive paper surface, and improves the qualified rate of adhesive paper products.

[0015] Preferably, the stirring time of step 4) is 8-15 min.

[0016] By adopting the above technical solution, the stirring time in step 4) is controlled within 8-15 minutes, ensuring that the modifier is more evenly distributed in the rubber, thereby improving the stability and bonding performance of the rubber and avoiding the problem of uneven bonding caused by insufficient stirring time.

[0017] Preferably, the specific process of gelatinization in step 5) is: heating the pit supply mechanism to 58-62° C. and gelatinizing to a viscosity of 11-15s; heating the paste supply mechanism to 56-60° C. and gelatinizing to a viscosity of 14-18s.

[0018] By adopting the above technical scheme, the materials in the pit supply mechanism and the paste supply mechanism are gelatinized under specific temperature range and viscosity conditions respectively, thereby ensuring that the adhesive can achieve the expected viscosity and stability in the subsequent processing, effectively improving the quality and pass rate of the adhesive paper, and solving the problem of inconsistent adhesion in the prior art.

[0019] Specifically, by controlling the gelatinization temperature of the pit supply mechanism at 58-62°C and the viscosity at 11-15s, this part of the rubber has good fluidity and appropriate adhesion; and the gelatinization of the paste supply mechanism at 56-60°C and reaching a viscosity of 14-18s ensures that the other component of the rubber has better bonding performance. The combination of the two can better meet the use requirements under different environmental conditions and avoid degumming caused by temperature changes.

[0020] Preferably, the carrier powder is composed of corn starch, flour and glutinous rice flour in a weight ratio of 1:0.1-0.3:0.2-0.5.

[0021] By adopting the above technical solution, the composition ratio of the carrier powder is optimized, thereby improving the stability and adhesive performance of the adhesive, and then making the prepared adhesive paper show more stable adhesive performance under different environmental conditions, avoiding the problem of inconsistent adhesion, and enhancing the qualified rate of the product. In particular, when corn starch, flour, and glutinous rice flour are combined in a specific ratio, the various physical properties of the adhesive can be better balanced, ensuring that the final product will not be too sticky and difficult to tear off during use, nor will it be easy to fall off due to insufficient adhesion, meeting the actual application needs.

[0022] Preferably, the acid anhydride compound is octenylsuccinic anhydride and / or acetic anhydride.

[0023] By adopting the above technical solution, octenyl succinic anhydride and / or acetic anhydride as a modifier can further react with the starch in the carrier powder to enhance the initial viscosity and stability of the adhesive, thereby improving the quality and qualified rate of the adhesive paper.

[0024] Preferably, the weight ratio of the octenylsuccinic anhydride to the acetic anhydride is 1:0.1-0.3.

[0025] By adopting the above technical solution, the weight ratio of octenyl succinic anhydride and acetic anhydride is set to 1:0.1-0.3, which can effectively promote the cross-linking reaction between the anhydride compound and the hydroxyl group in the carrier powder, thereby significantly improving the initial viscosity of the rubber compound while maintaining good adhesion stability, avoiding over-stickiness or non-stickiness during use, thereby improving the product qualification rate.

[0026] Preferably, the modifier consists of an acid anhydride compound and a carboxyl polymer.

[0027] By adopting the above technical scheme, the modifier is composed of anhydride compounds and carboxyl polymers, so that the carboxyl group and starch further react during the gelatinization process of the adhesive, thereby enhancing the initial viscosity and viscosity-increasing effect of the adhesive, so that the adhesive paper has stable adhesion properties during use, is not prone to over-stickiness or non-stickiness, and improves the qualified rate of the product.

[0028] Preferably, the carboxyl-containing polymer is composed of the following raw materials in parts by weight: 1-5 parts of carboxylated chitosan derivatives, 2-5 parts of γ-polyglutamic acid, and 0.1-0.8 parts of mussel mucin.

[0029] By adopting the above technical solution, the adhesive has better bonding performance and stability, ensuring that the adhesive paper will not fall off due to too low adhesion during use, nor will it cause damage to the surface of the object due to too high adhesion, thereby improving the qualified rate of the product. Specifically, the synergistic effect of carboxylated chitosan derivatives, γ-polyglutamic acid and mussel mucin enhances the adhesiveness and durability of the adhesive in a humid environment, effectively preventing degumming at high temperatures and maintaining the peeling force within an ideal range. It is especially used on the surfaces of hot cakes, buns, dishes, etc., and can reduce the phenomenon of residual residue on the surface, falling off or causing damage to the surface when peeling. Improve the practicality and quality of the adhesive paper.

[0030] In summary, the present application includes at least the following three beneficial technical effects: 1. The present application adopts a paste supply mechanism and a pit supply mechanism to produce the glue respectively, which can ensure that the materials are fully mixed and uniform in a short time to form a stable glue. The uniformity, stability and fluidity of the glue can be maintained during transportation, making it easy to spray on the paper surface. The glue layer formed after curing can maintain stable adhesion under high temperature and high humidity, reduce shedding, and avoid residual glue on the food surface or causing food surface defects when tearing, thereby improving its practicality and quality; 2. The compound use of anhydride compounds and carboxyl polymers in the modifier enhances the initial adhesion and sustained adhesion of the adhesive, thereby avoiding degumming under high temperature conditions and broadening the application range of adhesive paper.

[0031] 3. Through the synergistic effect of carboxylated chitosan derivatives, γ-polyglutamic acid and mussel mucin, the adhesiveness and durability of the adhesive in a wet environment are further enhanced, effectively preventing degumming at high temperatures and maintaining the peeling force within an ideal range. It is especially used on the surfaces of hot cakes, buns, dishes, etc., to reduce the surface residue, shedding or damage to the surface during peeling. It improves the practicality and quality of the adhesive paper. DETAILED DESCRIPTION

[0032] The present application is further described in detail below with reference to the embodiments.

[0033] Introduction of some raw materials: Mussel mucin is a mussel extract, water-soluble, and the manufacturer model is preferably Hubei Xinyuhong Biopharmaceutical Technology Co., Ltd., model N / A; The number average molecular weight of γ-polyglutamic acid is 100-200 kDa; The molecular structure of carboxylated chitosan derivatives is as follows: The flour is wheat flour; Glutinous rice flour is rice extract. Example

[0034] Example 1 A process for making adhesive for sticky paper made of edible materials, which is prepared by the following method: 1) Preparation: Arrange the alkali, borax and carrier powder neatly; Injection of carrier water: Add 550 kg of water into the mixing mechanism and heat to 33°C to obtain carrier water; Adding carrier powder: weighing 20kg of carrier powder and adding it to the pit supply mechanism, and adding 20kg of carrier powder to the paste supply mechanism. The adding time is controlled to be completed within 45s. After adding, stir at a speed of 100r / min for 15min; 2) Adding caustic soda solution: add 30 kg of caustic soda solution to the pit supply mechanism of step 1), and then add 20 kg of caustic soda solution to the paste supply mechanism of step 1). During the process of adding caustic soda solution, the speed is maintained at 100 r / min, and the feeding is completed within 2 minutes. Then, stir them separately at a stirring speed of 200 r / min and a stirring time of 10 minutes to fully and evenly mix the caustic soda solution and the carrier powder.

[0035] 3) Adding main water: Add 600kg of water to the pit supply mechanism in step 2) and 500kg of water to the paste supply mechanism. The water adding process should be completed within 6 minutes, and the stirring state should be maintained to ensure that the water, caustic soda solution and carrier powder are fully mixed.

[0036] 4) Adding modifier: Add 5 kg of modifier to the paste supply mechanism in step 3) and add 7 kg of modifier to the pit supply mechanism, mix the modifier with water, caustic soda solution and carrier powder, keep stirring during the adding process, the adding time is 3 minutes, and then stir evenly for 15 minutes.

[0037] 5) Gelatinization: The materials stirred evenly in the paste supply mechanism and the pit supply mechanism in step 4) are gelatinized respectively. The specific gelatinization process is as follows: the pit supply mechanism is heated to 58° C. and gelatinized to a viscosity of 15s; the paste supply mechanism is heated to 60° C. and gelatinized to a viscosity of 14s.

[0038] 6) According to weight parts, 2 kg of borax, all the materials after gelatinization in the pit supply mechanism in step 5) and all the materials after gelatinization in the paste supply mechanism are transferred to the mixing mechanism of step 1), mixed with carrier water, and carried out at a speed of 100 r / min for 10 minutes to obtain a rubber material.

[0039] The carrier powder is corn starch; the modifier is an acid anhydride compound.

[0040] The caustic soda solution in step 2) is obtained by mixing solid caustic soda and water in a weight ratio of 1.8:1.

[0041] The specific process of gelatinization in step 5) is as follows: the pit supply mechanism is heated to 60° C. and gelatinized to a viscosity of 13 seconds; the paste supply mechanism is heated to 58° C. and gelatinized to a viscosity of 16 seconds.

[0042] Example 2 The difference between Example 2 and Example 1 is that the amount of raw materials and process parameters are different, as follows: In step 1), 580 kg of water is added and heated to 34° C.; 25 kg of carrier powder is put into the pit supply mechanism, and 30 kg of carrier powder is put into the paste supply mechanism.

[0043] Step 2) 25 kg of caustic soda solution is added to the pit supply mechanism of step 1), and then 30 kg of caustic soda solution is added to the paste supply mechanism of step 1); the stirring time is 15 minutes.

[0044] The caustic soda solution in step 2) is obtained by mixing solid caustic soda and water in a weight ratio of 2:1.

[0045] In step 3), 580 kg of water is added to the pit supply mechanism and 530 kg of water is added to the paste supply mechanism.

[0046] The stirring time of step 4) is 12 min.

[0047] In step 5), the pit supply mechanism is heated to 60° C. and gelatinized to a viscosity of 13 s; the paste supply mechanism is heated to 58° C. and gelatinized to a viscosity of 16 s.

[0048] In step 6), the amount of borax is 5 kg.

[0049] Example 3 The difference between Example 3 and Example 1 is that the amount of raw materials and process parameters are different, as follows: In step 1), 600 kg of water is added and heated to 35° C.; 30 kg of carrier powder is put into the pit supply mechanism, and 30 kg of carrier powder is put into the paste supply mechanism.

[0050] Step 2) 30 kg of caustic soda solution is added to the pit supply mechanism of step 1), and then 40 kg of caustic soda solution is added to the paste supply mechanism of step 1); the stirring time is 20 minutes.

[0051] The caustic soda solution in step 2) is obtained by mixing solid caustic soda and water in a weight ratio of 1.9:1.

[0052] In step 3), add 600 kg of water to the pit supply mechanism and 600 kg of water to the paste supply mechanism.

[0053] The stirring time of step 4) is 15 min.

[0054] In step 5), the pit supply mechanism is heated to 62° C. and gelatinized to a viscosity of 11 seconds; the paste supply mechanism is heated to 56° C. and gelatinized to a viscosity of 18 seconds.

[0055] In step 6), the amount of borax is 8 kg.

[0056] Example 4 The difference between Example 4 and Example 1 is that the carrier powder is flour.

[0057] Example 5 The difference between Example 5 and Example 1 is that the carrier powder is glutinous rice flour.

[0058] Example 6 The difference between Example 6 and Example 1 is that the carrier powder is composed of corn starch, flour and glutinous rice flour in a weight ratio of 1:0.1:0.5.

[0059] Example 7 The difference between Example 7 and Example 1 is that the carrier powder is composed of corn starch, flour and glutinous rice flour in a weight ratio of 1:0.3:0.2.

[0060] Example 8 The difference between Example 8 and Example 7 is that the acid anhydride compound is acetic anhydride.

[0061] Example 9 The difference between Example 9 and Example 7 is that the acid anhydride compound consists of octenyl succinic anhydride and acetic anhydride in a weight ratio of 1:0.1.

[0062] Example 10 The difference between Example 10 and Example 7 is that the acid anhydride compound consists of octenyl succinic anhydride and acetic anhydride in a weight ratio of 1:0.3.

[0063] Embodiment 11 The difference between Example 11 and Example 10 is that the modifier is composed of an acid anhydride compound and a carboxyl polymer in a weight ratio of 1:1; the carboxyl polymer is obtained by mixing a carboxylated chitosan derivative, γ-polyglutamic acid, and mussel mucin in a weight ratio of 1:2:0.1.

[0064] Example 12 The difference between Example 12 and Example 10 is that the carboxyl polymer is obtained by mixing carboxylated chitosan derivative, γ-polyglutamic acid, and mussel mucin in a weight ratio of 3:5:0.5.

[0065] Embodiment 13 The difference between Example 13 and Example 10 is that the carboxyl polymer is obtained by mixing carboxylated chitosan derivative, γ-polyglutamic acid, and mussel mucin in a weight ratio of 5:3:0.8.

[0066] Embodiment 14 The difference between Example 14 and Example 11 is that an equal amount of the carboxylated chitosan derivative is replaced by γ-polyglutamic acid.

[0067] Embodiment 15 The difference between Example 15 and Example 11 is that an equal amount of γ-polyglutamic acid is replaced by a carboxylated chitosan derivative.

[0068] Example 16 The difference between Example 16 and Example 11 is that an equal amount of mussel mucin is replaced by a carboxylated chitosan derivative.

[0069] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the process steps are different, and the material is added once. The adhesive material for adhesive paper made of edible materials is prepared by the following method: 1) Preparation: Arrange the alkali, borax and carrier powder neatly; Injection of carrier water: Add 550 kg of water into the mixing mechanism and heat to 33°C to obtain carrier water; Adding carrier powder: weigh 40kg of carrier powder, 30kg of caustic soda solution and 1100kg of water and put them into the supply pit mechanism. The adding time is controlled to be completed within 525s. The stirring state should be maintained. After adding, stir at a speed of 100r / min for 25min; 2) Weigh 12 kg of modifier and 2 kg of borax and add them to the supply pit mechanism in step 1) to mix the modifier, borax, water, caustic soda solution and carrier powder. Keep stirring during the feeding process for 3 minutes, and then stir evenly for 15 minutes.

[0070] 3) Gelatinization: The materials uniformly stirred in the supply pit mechanism of step 2) are gelatinized respectively. The specific gelatinization process is heating to 58° C. and gelatinizing to a viscosity of 15s.

[0071] 4) All the materials weighed and gelatinized in the feeding mechanism in step 3) are transferred to the mixing mechanism in step 1) to be mixed with carrier water at a rotation speed of 100 r / min for 10 minutes to obtain a rubber compound.

[0072] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the modifier is replaced by borax in equal amount.

[0073] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that an equal amount of borax is replaced by a modifier.

[0074] Performance testing The adhesives obtained in Examples 1-16 and Comparative Examples 1-3 were transferred to the adhesive paper production line, maintained at a temperature of 35°C, and sprayed on the paper surface of the substrate by a spraying mechanism, with a spraying pressure of 3 MPa and a spraying amount of 10 g / m 2 , spraying efficiency 10s / m 2 , curing at 100℃ for 30s to form a glue layer on the surface of the paper layer, and then covering the glue layer with a release film, and molding to form several sticky papers. The substrate includes a paper layer and a PET layer. The paper layer is 30gsm wood pulp paper, the thickness of the PET layer is 0.02mm, and the size of the sticky paper is 2cm*5cm. The sticky paper is used in the following experiments.

[0075] Detection method / test method 1. Qualified rate: The peeling force of 100 adhesive papers obtained from Examples 1-16 and Comparative Examples 1-3 was tested, the release films of the adhesive papers were torn off, and the adhesive layers were adhered to a PE test plate, and the test was performed with reference to JIS Z 0237 (300 mm / min, 180°). When the peeling force (g / inch) of the adhesive paper was within 3-5 g / inch and there was no residual adhesive after tearing, it was considered qualified. If it exceeded this range, it was considered unqualified, and the qualified rate was calculated.

[0076] 2. Temperature and humidity resistance test: Tear off the release films of 100 adhesive papers obtained from Examples 1-16 and Comparative Examples 1-3, adhere the adhesive layer to a PE test plate, and place them in an environment with a humidity of 85% and a temperature of 60°C for 0.5 h. Then, test them with reference to JISZ 0237 (300 mm / min, 180°). When the peel force (g / inch) of the adhesive paper is within 3-5 g / inch and there is no residual glue after tearing, it is considered qualified. If it exceeds this range, it is considered unqualified, and the qualified rate is calculated.

[0077] 3. The adhesive obtained in Examples 1-16 and Comparative Examples 1-3 was coated on a release film, cured at 80°C for 30 min, placed in a 50°C oven for 2 h, and left at room temperature for 24 h to obtain an adhesive film with a thickness of 0.2 mm. The tear strength of the adhesive film was tested according to GB / T16578-1996.

[0078] The above experimental data are shown in Table 1. Table 1 Experimental data of Examples 1-16 and Comparative Examples 1-3 It can be seen from Example 1 and Comparative Example 1 and Table 1 that the qualified rate and tear strength of Comparative Example 1 are lower than those of the example. It can be seen that through the process steps of the present application, the materials can be fully mixed and evenly, and have better stability. When used for mass production, the uniformity and quality stability of the adhesive paper can be guaranteed.

[0079] Combining Example 1 with Comparative Examples 2-3 and Table 1, it can be seen that the qualified rate and tear strength of Comparative Examples 2-3 are lower than those of the embodiments. It can be seen that the combined effect of borax and the modifier can achieve a better modification effect, further improving the adhesion stability of the adhesive layer of the adhesive paper, avoiding adhesive residue on the surface of food and other products after tearing the adhesive paper, and improving the practicality of the adhesive paper.

[0080] From Example 1, Example 4, Example 5 and Example 6-7, it can be seen that when Example 6-7 is compounded with corn starch, flour and glutinous rice flour, its qualified rate and tear strength are higher than the tear strength and qualified rate of using one of them (Example 1, Example 4, Example 5), indicating that the compound use of corn starch, flour and glutinous rice flour plays a synergistic role and further improves the comprehensive performance of the rubber compound.

[0081] Combining Example 7 with Example 8-10 and Table 1, it can be seen that the qualified rate and tear strength of Example 9-10 are higher than those of Example 7 and Example 8. It can be seen that when octenyl succinic anhydride and acetic anhydride are compounded, they play a synergistic role, so that the overall performance of the adhesive is improved. The quality of the adhesive paper in the mass production process is improved, and the adhesive paper is reduced from falling off when it is used, or after the adhesive paper is torn off, the adhesive layer remains on the surface of food or the like, or is taken away from the surface of the food, thereby improving its practicality.

[0082] Combining Examples 10, 14-16 and Examples 11-13 and Table 1, it can be seen that the qualified rate and tear strength of the temperature and humidity resistance test of Examples 11-13 are higher than those of Examples 10 and 14-16, indicating that the use of carboxylated chitosan derivatives, γ-polyglutamic acid, mussel mucin, in combination with acid anhydride compounds and borax, has a better modification effect on the carrier powder, so that the obtained adhesive has better comprehensive performance. When used in the production of adhesive paper, a stable and uniform adhesive can be formed on its surface to obtain better quality. When the adhesive paper is adhered to food or food packaging, it can stably adhere to its surface, and after tearing, it will not cause damage to the food surface, and it is not easy to leave residual adhesive on its surface, thereby improving the practicality of the adhesive paper.

[0083] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A process for making adhesive paper made of edible materials, characterized in that: Prepared by the following method: 1) Preparation: Arrange alkali, borax and carrier powder neatly; Inject carrier water: Add 550-600 parts of water by weight into the mixing mechanism and heat to 33-35°C to obtain carrier water; Adding carrier powder: according to weight, weigh 20-30 parts of carrier powder and put it into the pit supply mechanism, and 20-30 parts of carrier powder and put it into the paste supply mechanism; 2) Adding caustic soda solution: according to weight parts, add 20-30 parts of caustic soda solution to the pit supply mechanism, and then add 20-40 parts of caustic soda solution to the paste supply mechanism, and stir them evenly; 3) Add main water: 550-600 parts for the pit mechanism and 500-600 parts for the paste mechanism according to weight; 4) Adding modifier: According to weight, add 5-8 parts of modifier to the paste supply mechanism and 4-7 parts of modifier to the pit supply mechanism, and then stir them evenly; 5) Gelatinization: Gelatinize the materials in the paste supply mechanism and the pit supply mechanism respectively; 6) Mixing: Add 2-8 parts of borax, all the materials of the pit supply mechanism in step 5) and all the materials of the paste supply mechanism to the mixing mechanism in step 1), stir evenly, and obtain a rubber material; The carrier powder is one or more of corn starch, flour and glutinous rice flour; and the modifier is an acid anhydride compound.

2. The process for making adhesive paper made of edible materials according to claim 1, characterized in that: The stirring time of step 2) is 10-20 min.

3. The process for making adhesive paper made of edible materials according to claim 1, characterized in that: The caustic soda solution in step 2) is obtained by mixing solid caustic soda and water in a weight ratio of (1.8-2.0):

1.

4. The process for making adhesive paper made of edible materials according to claim 1, characterized in that: The stirring time of step 4) is 8-15 min.

5. The process for making adhesive paper made of edible materials according to claim 1, characterized in that: The specific process of gelatinization in step 5) is as follows: heating the pit supply mechanism to 58-62° C. and gelatinizing to a viscosity of 11-15s; heating the paste supply mechanism to 56-60° C. and gelatinizing to a viscosity of 14-18s.

6. A process for making adhesive paper made of edible materials according to any one of claims 1 to 5, characterized in that: The carrier powder is composed of corn starch, flour and glutinous rice flour in a weight ratio of 1: (0.1-0.3): (0.2-0.5).

7. A process for making adhesive paper made of edible materials according to any one of claims 1 to 5, characterized in that: The acid anhydride compound is octenyl succinic anhydride and / or acetic anhydride.

8. The process for making adhesive paper made of edible materials according to claim 7, characterized in that: The weight ratio of the octenylsuccinic anhydride to the acetic anhydride is 1:(0.1-0.3).

9. A process for making adhesive paper made of edible materials according to any one of claims 1 to 5, characterized in that: The modifier consists of an acid anhydride compound and a carboxyl polymer.

10. A process for making adhesive paper made of edible materials according to claim 9, characterized in that: The carboxyl-containing polymer is composed of the following raw materials in parts by weight: 1-5 parts of carboxylated chitosan derivative γ-polyglutamic acid 2-5 parts Mussel mucin 0.1-0.8 parts.

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