Moisture absorption and temperature control material for packaging box and preparation method

Abstract

The invention discloses a moisture absorption and temperature control material for a packaging box and a preparation method thereof, and relates to the technical field of packaging box processing, the moisture absorption and temperature control material for the packaging box comprises calcium chloride hexahydrate, silica gel, zeolite and a cellulose matrix; wherein in 100 mass percent, the calcium chloride hexahydrate accounts for 40-70%; the silica gel accounts for 5-10%; the zeolite accounts for 5-10%; and the balance of cellulose matrix. According to the moisture absorption and temperature control material for the packaging box, the material with moisture absorption and temperature control capacity is provided, the packaging box made of the material is used for storing peaches, the problem that in the prior art, the quality guarantee period of the peaches placed in corrugated boards is short can be solved, and the quality guarantee period of the peaches can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of packaging box processing, in particular to a moisture absorbing and temperature controlling material for a packaging box and a preparation method thereof. Background Art

[0002] Peach is a common fruit. It symbolizes longevity and is often used as a gift. Regular peaches are usually packaged in boxes made of corrugated cardboard.

[0003] Since many people believe that the bigger the peach, the better its meaning, some large peaches with exquisite appearance will be given the title of "Peach King". "Peach King" is the most exquisite peach in a batch. Therefore, the peaches named "Peach King" usually have a high unit price. Due to their high product added value, they are usually packaged in exquisite boxes to increase customers' desire to buy.

[0004] "Peach King" has high value due to its exquisite appearance, so the packaging box containing "Peach King" is usually filled with flexible materials to protect the peaches and reduce the deformation caused by collision between the peaches and the rigid structure of the packaging box.

[0005] However, the appearance of peaches is also related to their freshness. Conventional corrugated cardboard packaging boxes have little effect on extending the shelf life of peaches. Summary of the invention

[0006] In view of the above technical problems, the present invention provides a moisture-absorbing and temperature-controlling material for a packaging box, which can extend the shelf life of peaches placed in a packaging box made of the material.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The hygroscopic temperature-controlling material for a packaging box provided by the present invention comprises calcium chloride hexahydrate, silica gel, zeolite and a cellulose matrix; wherein, in 100% by mass, the calcium chloride hexahydrate accounts for 40-70%; the silica gel accounts for 5-10%; the zeolite accounts for 5-10%; and the rest is the cellulose matrix.

[0009] The method for preparing the moisture absorbing and temperature controlling material for a packaging box provided by the present invention comprises the following steps:

[0010] S101: preparing calcium chloride hexahydrate, silica gel, zeolite and cellulose matrix in a mass percentage ratio in accordance with claim 1;

[0011] Calcium chloride hexahydrate ensures a stable crystal water content and is sieved to remove larger particles to ensure uniformity;

[0012] Choose a food contact safe grade of silicone and dry it to activate its moisture absorbing properties;

[0013] Select zeolite powder suitable for food contact and control particle size distribution by sieving;

[0014] Select microcrystalline cellulose and disperse it in water to form a slurry;

[0015] S102: placing the cellulose matrix of the slurry in step S101 in a stirrer, and sequentially adding calcium chloride hexahydrate, silica gel, and zeolite powder until the mixture is uniformly stirred to form;

[0016] S103: applying pressure to the mixture obtained in step S102 using a mold to shape the material;

[0017] S104: using hot air to dry the formed structure obtained in step S103;

[0018] S105: testing the moisture absorption rate and phase transition temperature of the dried structure obtained in step S104;

[0019] S106: Cut or trim the dried finished product to meet the required size and shape specifications.

[0020] In the method for preparing the hygroscopic temperature-controlling material for packaging boxes provided by the present invention, preferably, in step S103, the pressure applied to the material by the mold is 10-50 MPa; and the time for applying the pressure is 30 seconds to 5 minutes.

[0021] In the method for preparing the hygroscopic temperature-controlling material for the packaging box provided by the present invention, preferably, in step S104, the hot air drying adopts a gradual heating method, the initial temperature is set to 40°C, gradually increased to about 50°C, and maintained for a certain time to reduce internal stress and avoid premature decomposition of calcium chloride hexahydrate, and the total drying time is 5-12 hours.

[0022] The above technical solution has the following advantages or beneficial effects:

[0023] The invention discloses a hygroscopic temperature-controlling material for a packaging box and a preparation method thereof, and relates to the technical field of packaging box processing, comprising calcium chloride hexahydrate, silica gel, zeolite and cellulose matrix; wherein, in 100% by mass, calcium chloride hexahydrate accounts for 40-70%; silica gel accounts for 5-10%; zeolite accounts for 5-10%; and the rest is cellulose matrix. The hygroscopic temperature-controlling material for a packaging box provided by the invention provides a material with hygroscopic temperature-controlling ability, and the packaging box made of the material is used to store peaches, thereby solving the problem of short shelf life of peaches placed in corrugated cardboard in the prior art, and can extend the shelf life of peaches. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings. The drawings are not drawn to scale, but rather to illustrate the subject matter of the present invention.

[0025] Figure 1 It is a wireframe schematic diagram of the steps of the method for preparing the moisture absorbing and temperature controlling material for the packaging box provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should be noted that the terms used in the present invention are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0027] The technical solutions in the embodiments of the present invention are described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the protection scope of the present invention.

[0028] Embodiment 1:

[0029] The hygroscopic and temperature-controlling material for a packaging box provided in Example 1 of the present invention comprises calcium chloride hexahydrate, silica gel, zeolite and a cellulose matrix; wherein, in 100% by mass, calcium chloride hexahydrate accounts for 55%; silica gel accounts for 8%; zeolite accounts for 8%; and the rest is the cellulose matrix.

[0030] The method for preparing the hygroscopic temperature-controlling material for a packaging box provided in Example 1 of the present invention is as follows: Figure 1 As shown, the following steps are included:

[0031] S101: Prepare calcium chloride hexahydrate, silica gel, zeolite and cellulose matrix in the mass percentage ratio in accordance with claim 1; ensure that all materials are food grade or products that meet relevant safety standards, and conduct a comprehensive safety assessment;

[0032] Calcium chloride hexahydrate ensures a stable crystal water content and is sieved to remove larger particles to ensure uniformity;

[0033] Choose a food contact safe grade of silicone and dry it to activate its moisture absorbing properties;

[0034] Select zeolite powder suitable for food contact and control particle size distribution by sieving;

[0035] Select microcrystalline cellulose and disperse it in water to form a slurry;

[0036] S102: placing the cellulose matrix of the slurry in step S101 in a stirrer, and sequentially adding calcium chloride hexahydrate, silica gel, and zeolite powder until the mixture is uniformly stirred to form;

[0037] S103: applying pressure to the mixture obtained in step S102 using a mold to form a packaging box;

[0038] S104: using hot air drying on the molded structure obtained in step S103; the initial temperature of hot air drying is set to 40° C., gradually increased to about 50° C., and maintained for 8 hours to reduce internal stress and avoid premature decomposition of calcium chloride hexahydrate.

[0039] S105: testing the moisture absorption rate and phase change temperature of the dried structure obtained in step S104 to ensure that it achieves the expected moisture absorption, temperature control and mechanical properties;

[0040] S106: Cut or trim the dried finished product to meet the required size and shape specifications.

[0041] Peaches of the same variety, the same maturity, and no obvious damage were selected as experimental samples and divided into two groups, each with 50 pieces, and placed in the packaging box produced by the material of this embodiment and the corrugated cardboard packaging box respectively;

[0042] The packaging boxes are placed in a cold storage, ensuring that they are under the same temperature, humidity, light and ventilation conditions. The temperature in the cold storage is 0℃~1℃;

[0043] The status of each peach in the packaging box produced by the material of this embodiment and the corrugated cardboard packaging box was checked and recorded every day, including indicators such as appearance changes (color, texture), weight loss, and whether there was mold growth.

[0044] in conclusion:

[0045] Peaches in corrugated cardboard boxes begin to show obvious signs of deterioration around 7 to 14 days;

[0046] The peaches in the packaging box of the material of this embodiment began to show obvious signs of deterioration in 14 days to 3 weeks.

[0047] The material packaging box of this embodiment prolongs the shelf life of peaches.

[0048] In summary, the present invention discloses a hygroscopic temperature-controlling material for a packaging box, that is, a preparation method thereof, which relates to the technical field of packaging box processing, and includes calcium chloride hexahydrate, silica gel, zeolite and cellulose matrix; wherein, in 100% by mass, calcium chloride hexahydrate accounts for 40-70%; silica gel accounts for 5-10%; zeolite accounts for 5-10%; and the rest is cellulose matrix. The hygroscopic temperature-controlling material for a packaging box provided by the present invention provides a material with hygroscopic temperature-controlling ability, and the packaging box made of this material is used to store peaches, which solves the problem of short shelf life of peaches placed in corrugated cardboard in the prior art, and can extend the shelf life of peaches.

[0049] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A moisture absorbing and temperature controlling material for a packaging box, characterized in that: It includes calcium chloride hexahydrate, silica gel, zeolite and cellulose matrix; wherein, in 100% by mass, calcium chloride hexahydrate accounts for 40-70%; silica gel accounts for 5-10%; zeolite accounts for 5-10%; and the rest is cellulose matrix.

2. A method for preparing the hygroscopic temperature-controlling material for packaging boxes according to claim 1, characterized in that: Includes steps: S101: preparing calcium chloride hexahydrate, silica gel, zeolite and cellulose matrix in a mass percentage ratio in accordance with claim 1; Calcium chloride hexahydrate ensures a stable crystal water content and is sieved to remove larger particles to ensure uniformity; Choose a food contact safe grade of silicone and dry it to activate its moisture absorbing properties; Select zeolite powder suitable for food contact and control particle size distribution by sieving; Select microcrystalline cellulose and disperse it in water to form a slurry; S102: placing the cellulose matrix of the slurry in step S101 in a stirrer, and sequentially adding calcium chloride hexahydrate, silica gel, and zeolite powder until the mixture is uniformly stirred to form a mixture; S103: applying pressure to the mixture obtained in step S102 using a mold to shape the material; S104: using hot air to dry the formed structure obtained in step S103; S105: testing the moisture absorption rate and phase transition temperature of the dried structure obtained in step S104; S106: Cut or trim the dried finished product to meet the required size and shape specifications.

3. The method for preparing the hygroscopic temperature-controlling material for packaging boxes according to claim 2, characterized in that: In step S103, the pressure applied to the material by the mold is 10-50 MPa; the time of applying the pressure is 30 seconds to 5 minutes.

4. The method for preparing the hygroscopic temperature-controlling material for packaging boxes according to claim 2, characterized in that: In step S104, hot air drying is carried out in a gradually increasing temperature manner. The initial temperature is set at 40°C, gradually increased to about 50°C, and maintained for a certain period of time to reduce internal stress and avoid premature decomposition of calcium chloride hexahydrate. The total drying time is 5-12 hours.

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