Composite packaging film suitable for high-temperature sterilization

Abstract

The utility model discloses a composite packaging film suitable for high temperature sterilization, and relates to the technical field of packaging films, the composite packaging film specifically comprises a supporting framework and a water absorption block, the supporting framework sequentially comprises a surface layer I, a reflecting layer I, a heat transfer layer I and an inner layer I from outside to inside; the side, away from the first heat transfer layer, of the first inner layer is coated with a hydrophobic coating. Water absorption blocks are uniformly arranged on the supporting framework, and each water absorption block sequentially comprises a second surface layer, a water absorption layer, a second reflecting layer and a second inner layer from outside to inside. According to the composite packaging film suitable for high-temperature sterilization, through the arrangement of the first reflecting layer and the second reflecting layer, the composite packaging film can reflect heat, reduce the heat loss speed, prolong the high-temperature sterilization duration and improve the high-temperature sterilization effect; through the arrangement of the antibacterial heat-conducting coating, the composite packaging film has antibacterial performance and is convenient to use, and in the high-temperature sterilization process, the heat conduction speed can be increased, the high-temperature sterilization speed of food can be increased, and the food sterilization effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of packaging film, specifically to a composite packaging film suitable for high temperature sterilization. BACKGROUND

[0002] The composite packaging film is a packaging material formed by printing and compounding of multiple films, and has been widely applied in food, medicine, chemical industry and other fields. In the prior art, the packaging film suitable for high temperature sterilization is obtained by film compounding and modification. This type of packaging film usually has good water vapor barrier performance. However, during the high temperature sterilization of food, water vapor in the food will gather on the packaging film. After the high temperature sterilization is completed, the water vapor is easy to condense on the packaging film due to the temperature drop. The condensed water droplets are easy to fall back to the food, increase the humidity of the internal environment, and affect the sterilization effect. Moreover, the heat is easy to lose after sterilization. Based on this, the present application provides a composite packaging film suitable for high temperature sterilization. SUMMARY

[0003] The utility model provides a composite packaging film suitable for high temperature sterilization, solves the water vapor easy to condense on the packaging film, the condensed water droplets easy to fall back to the food, increases the humidity of the internal environment, and affects the sterilization effect, the heat easy to lose problem in the above background art.

[0004] The utility model provides the following technical scheme: a composite packaging film suitable for high temperature sterilization, including support framework and water absorption block, support framework from outside to inside includes face layer one, reflection layer one, heat transfer layer one and inner layer one in proper order;The side away from heat transfer layer one of inner layer one is daubed with hydrophobic coating;

[0005] The support framework is uniformly provided with water absorption blocks, and the water absorption blocks sequentially include face layer two, water absorption layer, reflection layer two and inner layer two from outside to inside;The reflection layer two and the inner layer two are both provided with micropores.

[0006] Preferably, the thickness of the support framework is the same as that of the water absorption block.

[0007] Preferably, the top of the reflection layer two and the bottom of the face layer two are both provided with expansion cavities.

[0008] Preferably, the outer surfaces of the face layer one, the face layer two and the inner layer two are all provided with antibacterial heat-conducting coating.

[0009] Preferably, the side of the reflection layer one close to the heat transfer layer one is provided with a reflective coating, and the side of the reflection layer two close to the inner layer two is provided with another reflective coating.

[0010] Preferably, the side of the inner layer two away from the reflection layer two is provided with a hydrophobic coating, and the side of the face layer two close to the water absorption layer is provided with a hydrophobic coating.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] 1、This composite packaging film suitable for high temperature sterilization, through the setting of water absorption block and hydrophobic coating, hydrophobic coating can prevent water molecules from condensation on the packaging film, play the role of anti fog, facilitate the transfer of heat in the high temperature sterilization process, and after high temperature sterilization, water absorption block can adsorb the water droplets condensed on the packaging film, avoid water droplets to drop in food again, guarantee the sterilization effect.

[0013] 2、This composite packaging film suitable for high temperature sterilization, through the setting of reflection layer one and reflection layer two, this composite packaging film can reflect heat, reduce heat loss speed, prolong high temperature sterilization length, improve high temperature sterilization effect;Through the setting of antibacterial heat conducting coating, the composite packaging film has antibacterial performance, facilitate the use of composite packaging film, and in the high temperature sterilization process, can improve the heat conduction speed, accelerate the speed of food high temperature sterilization, improve the food sterilization effect. DETAILED DESCRIPTION

[0014] Figure 1 It is the structure front view schematic drawing of the utility model;

[0015] Figure 2 It is the structure section schematic drawing of the utility model;

[0016] Figure 3 It is the structure reflection layer two schematic drawing of the utility model;

[0017] Figure 4 It is the structure surface layer two section schematic drawing of the utility model.

[0018] In the drawing: 1, support framework;2, water absorption block;3, inner layer two;4, reflection layer two;5, water absorption layer;6, surface layer two;7, inner layer one;8, heat transfer layer one;9, reflection layer one;10, surface layer one;11, antibacterial heat conducting coating;12, reflection coating;13, expansion cavity. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0020] The utility model provides a kind of composite packaging film suitable for high-temperature sterilization, including support framework 1 and water absorption block 2, support framework 1 from outside to inside sequentially includes surface layer one 10, reflection layer one 9, heat transfer layer one 8 and inner layer one 7, the outer surface of surface layer one 10 is smeared with antibacterial heat conduction coating 11, antibacterial heat conduction coating 11 can be graphene coating, graphene coating can prevent bacteria from adhering to the packaging film surface, and graphene can destroy bacterial structure, reach antibacterial effect, facilitate the use of the composite packaging film, and in high-temperature sterilization process, graphene coating has heat conduction performance, accelerates the transfer of heat on composite packaging film.

[0021] Reflection layer one 9 is equipped with reflective coating 12 on the side close to heat transfer layer one 8, reflective coating 12 can reflect heat, reduce heat loss, the composite packaging film in use process, heat can be imprisoned in packaging film after high-temperature sterilization is completed, prolongs high-temperature sterilization duration, improves the sterilization effect of food wrapped by the composite packaging film.

[0022] Heat transfer layer one 8 can accelerate the transfer of heat, the outer surface of heat transfer layer one 8 can also be smeared with graphene coating.

[0023] The side of inner layer one 7 away from heat transfer layer one 8 is smeared with hydrophobic coating, by the setting of hydrophobic coating, can avoid water vapor in food during high-temperature sterilization process adhering on support framework 1.And inner layer one 7 is corrosion-resistant material, inner layer one 7 material can be polypropylene, so that the packaging film has acid-resistant and medium-resistant characteristics.

[0024] Support framework 1 is uniformly provided with water absorption block 2, the thickness value of support framework 1 is same with the thickness value of water absorption block 2, water absorption block 2 from outside to inside sequentially includes surface layer two 6, water absorption layer 5, reflection layer two 4 and inner layer two 3;The outer surface of both surface layer two 6 and inner layer two 3 is equipped with antibacterial heat conduction coating 11, so that the composite packaging film has antibacterial performance while can improve heat conduction speed.Antibacterial heat conduction coating 11 can be graphene coating, improve the corrosion resistance of the packaging film, so that the packaging film has acid-resistant and medium-resistant characteristics.

[0025] Reflection layer two 4 and inner layer two 3 are both equipped with micropore, water vapor generated during high-temperature sterilization process can contact water absorption layer 5 through micropore, water absorption layer 5 adsorbs water vapor, condensed water droplet can be absorbed by water absorption layer 5 through micropore, and water absorption layer 5 material can be water-absorbing film.

[0026] The top of reflection layer two 4 and the bottom of surface layer two 6 are both equipped with expansion cavity 13, by the setting of expansion cavity 13, expansion space can be provided for water absorption layer 5, facilitate the work of water absorption layer 5.

[0027] The other reflective layer 12 is arranged on the side of the second reflective layer 4 close to the second inner layer 3, the composite packaging film can reflect heat, reduce the heat loss speed, prolong the high-temperature sterilization time, and improve the high-temperature sterilization effect.

[0028] The second inner layer 3 is provided with a hydrophobic coating on the side away from the second reflective layer 4, and the second surface layer 6 is provided with a hydrophobic coating on the side close to the water absorption layer 5.

[0029] As can be seen from the above description, the composite packaging film has antibacterial properties on the surface layer and the inner layer, which facilitates the application of the composite packaging film in the food field. During the high-temperature sterilization process, the water absorption layer 5 can absorb water vapor, and after sterilization, the water absorption layer 5 can absorb the condensed water droplets to prevent the water droplets from falling back onto the food. The reflective layer 1 and the second reflective layer 4 can reflect heat, reduce the heat loss speed, prolong the high-temperature sterilization time, and improve the high-temperature sterilization effect.

[0030] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A composite packaging film suitable for high temperature sterilization, comprising a supporting skeleton (1) and water absorbing blocks (2), characterized in that: The support framework (1) comprises successively from outside to inside a surface layer one (10), a reflection layer one (9), a heat transfer layer one (8) and an inner layer one (7); the side of the inner layer one (7) away from the heat transfer layer one (8) is coated with a hydrophobic coating; The support framework (1) is uniformly provided with water absorption blocks (2), the water absorption blocks (2) comprise successively from outside to inside a surface layer two (6), a water absorption layer (5), a reflection layer two (4) and an inner layer two (3); both the reflection layer two (4) and the inner layer two (3) are provided with micropores.

2. The composite packaging film according to claim 1, wherein: The thickness of the support framework (1) is the same as that of the water absorption blocks (2).

3. The composite packaging film according to claim 1, wherein: The top of the reflection layer two (4) and the bottom of the surface layer two (6) are provided with expansion cavities (13).

4. The composite packaging film according to claim 1, wherein: The outer surfaces of the surface layer one (10), the surface layer two (6) and the inner layer two (3) are provided with antibacterial heat-conducting coatings (11).

5. The composite packaging film according to claim 1, wherein: The side of the reflection layer one (9) close to the heat transfer layer one (8) is provided with a reflection coating (12), and the side of the reflection layer two (4) close to the inner layer two (3) is provided with another reflection coating (12).

6. The composite packaging film according to claim 1, wherein: The side of the inner layer two (3) away from the reflection layer two (4) is provided with a hydrophobic coating, and the side of the surface layer two (6) close to the water absorption layer (5) is provided with a hydrophobic coating.

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