Photo-thermal sterilization composite film and packaging bag

Abstract

The utility model discloses a photo-thermal sterilization composite membrane which comprises a paper base layer, an alkylated modified phthalocyanine coating and a heat-seal coating, the alkylated modified phthalocyanine coating is arranged on the paper base layer, the heat-seal coating is arranged on the alkylated modified phthalocyanine coating, the alkylated modified phthalocyanine coating is located between the paper base layer and the heat-seal coating, and the paper base layer is arranged on the heat-seal coating. An ink printing layer is arranged on one side of the paper base layer, and the ink printing layer and the alkylated modified phthalocyanine coating are located on the two sides of the paper base layer respectively. The utility model further discloses a packaging bag prepared from the photo-thermal sterilization composite film.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials, and in particular to a photothermal sterilization composite film and packaging bag. Background Technology

[0002] Antibacterial packaging film is a commonly used type of packaging film. After being made into packaging bags, this type of packaging film can give the packaging bags themselves good antibacterial properties, thereby effectively extending the storage time of the packaged items. The structure of the antibacterial packaging film currently used is shown in patent publication document CN204488158U. The antibacterial packaging film shown in this structure uses a composite method of plastic film and nano antibacterial coating layer. There is a problem with the use of such a composite film: the antibacterial nanoparticles in this composite film rely on ultraviolet light excitation, which has relatively poor reliability and low sterilization efficiency. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a photothermal sterilization composite membrane, which uses an alkylated modified phthalocyanine coating as the sterilization coating. The alkylated modified phthalocyanine coating can be excited by irradiation under infrared light, resulting in high photothermal conversion efficiency and good sterilization effect.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A photothermal sterilization composite film includes a paper base layer, an alkylated modified phthalocyanine coating, and a heat-sealing coating. The alkylated modified phthalocyanine coating is disposed on the paper base layer, and the heat-sealing coating is disposed on the alkylated modified phthalocyanine coating. The alkylated modified phthalocyanine coating is located between the paper base layer and the heat-sealing coating. An ink printing layer is disposed on one side of the paper base layer, and the ink printing layer and the alkylated modified phthalocyanine coating are respectively located on both sides of the paper base layer.

[0006] In this photothermal sterilization composite membrane, an alkylated modified phthalocyanine coating is used for sterilization. The alkyl chain of the alkylated modified phthalocyanine is C4-C8, and the near-infrared absorption peak is 600-900nm. Therefore, under near-infrared light (808nm) irradiation, the alkylated modified phthalocyanine coating heats up to 50-60℃ within 5 minutes, which can kill 99% of common pathogenic bacteria (such as Escherichia coli and Staphylococcus aureus). Therefore, it has a rapid response and high photothermal conversion efficiency, and can be activated in the absence of ultraviolet light (i.e., near-infrared light irradiation). Moreover, the coating can be recycled, and after 5 repeated uses, the sterilization rate is still ≥99%.

[0007] In summary, this composite membrane uses an alkylated modified phthalocyanine coating as a bactericidal coating. The alkylated modified phthalocyanine coating can be excited by infrared light irradiation, resulting in high photothermal conversion efficiency and good bactericidal effect.

[0008] Optionally, the paper base layer includes, but is not limited to, coated paper, white kraft paper, offset paper, or transparent paper.

[0009] Optionally, the basis weight of the paper base layer is 40-200 g / m². Specifically, white kraft paper is preferably used as the paper base layer.

[0010] Optionally, the thickness of the alkylated modified phthalocyanine coating is 1 to 10 micrometers.

[0011] Optionally, the heat-sealing coating includes an aqueous acrylic coating.

[0012] Optionally, the thickness of the water-based acrylic coating is 2 to 5 micrometers.

[0013] Optionally, the ink printing layer includes a water-based ink printing layer.

[0014] A packaging bag comprising the photothermal sterilization composite film as described above.

[0015] This type of packaging bag is made of the above-mentioned photothermal sterilization composite film, wherein the photothermal sterilization film is bonded together with the heat-sealing coating of the composite film during the bag making process.

[0016] The beneficial effects of this invention are: using an alkylated modified phthalocyanine coating as a bactericidal coating, the alkylated modified phthalocyanine coating can be excited by irradiation under infrared light, resulting in high photothermal conversion efficiency and good bactericidal effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a simplified structural diagram of the photothermal sterilization composite membrane;

[0019] The figures are labeled as follows: 1. Ink printing layer; 2. Paper base layer; 3. Alkylated modified phthalocyanine coating; 4. Water-based acrylic coating. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0023] Example 1

[0024] A photothermal sterilization composite film includes a paper base layer 2, an alkylated modified phthalocyanine coating 3, and a heat-sealing coating. The alkylated modified phthalocyanine coating 3 is disposed on the paper base layer 2, and the heat-sealing coating is disposed on the alkylated modified phthalocyanine coating 3. The alkylated modified phthalocyanine coating 3 is located between the paper base layer 2 and the heat-sealing coating. An ink printing layer 1 is disposed on one side of the paper base layer 2, and the ink printing layer 1 and the alkylated modified phthalocyanine coating 3 are respectively located on both sides of the paper base layer 2.

[0025] In this photothermal sterilization composite membrane, an alkylated modified phthalocyanine coating 3 is used. The alkyl chain length of the alkylated modified phthalocyanine is C4-C8, and the near-infrared absorption peak is 600-900 nm. When the above coating is exposed to 808 nm near-infrared light with an intensity of 1.5 W / cm², the surface temperature of the coating rapidly rises to 50–60℃ within 5 minutes. Controlled sterilization experiments show that this temperature rise can effectively kill common pathogenic bacteria (such as Escherichia coli and Staphylococcus aureus) with a sterilization rate ≥99%. Further cyclic use experiments show that after 5 cycles of near-infrared irradiation and sterilization, the surface temperature of the coating can still rise to 60℃, and the sterilization effect remains above 99%, indicating that it has good structural stability and reusability, making it suitable for multiple sterilization scenarios.

[0026] In summary, this composite membrane uses an alkylated modified phthalocyanine coating 3 as a bactericidal coating. The alkylated modified phthalocyanine coating 3 can be activated by irradiation under infrared light, resulting in high photothermal conversion efficiency and good bactericidal effect.

[0027] As attached Figure 1 As shown, the paper base layer 2 includes, but is not limited to, coated paper, white kraft paper, offset paper, or transparent paper.

[0028] As attached Figure 1 As shown, the basis weight of the paper base layer 2 is 40-200 g / m². Specifically, white kraft paper is preferably used for the paper base layer 2.

[0029] As attached Figure 1 As shown, the thickness of the alkylated modified phthalocyanine coating 3 is 1~10 micrometers.

[0030] Specifically, the alkylated modified phthalocyanine coating selected is the Q-0351419 type coating from Xi'an Qiyue Biotechnology Co., Ltd.

[0031] As attached Figure 1 As shown, the heat-sealing coating includes an aqueous acrylic coating 4.

[0032] Specifically, the water-based acrylic coating uses BH-885 type coating from Guangdong Bohai Chemical Technology Co., Ltd.

[0033] As attached Figure 1 As shown, the thickness of the water-based acrylic coating is 2-5 micrometers.

[0034] As attached Figure 1 As shown, the ink printing layer 1 includes a water-based ink printing layer 1.

[0035] The thickness of the specific ink printing layer 1 can be 0.5 micrometers.

[0036] Example 2

[0037] A packaging bag comprising a photothermal sterilization composite film as shown in Example 1.

[0038] This type of packaging bag is made of a photothermal sterilization composite film as shown in Example 1, wherein the photothermal sterilization film is bonded together with a heat-sealing coating during the bag manufacturing process. This type of packaging bag includes, but is not limited to, back-sealable bags.

[0039] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photo-thermal sterilization composite film, characterized by, The material includes a paper base layer, an alkylated modified phthalocyanine coating, and a heat-sealing coating. The alkylated modified phthalocyanine coating is disposed on the paper base layer, and the heat-sealing coating is disposed on the alkylated modified phthalocyanine coating. The alkylated modified phthalocyanine coating is located between the paper base layer and the heat-sealing coating. An ink printing layer is disposed on one side of the paper base layer, and the ink printing layer and the alkylated modified phthalocyanine coating are respectively located on both sides of the paper base layer.

2. The photothermal sterilization composite film according to claim 1, characterized in that, The paper base layer includes coated paper, white kraft paper, offset paper, or transparent paper.

3. The photo-thermal sterilization composite film according to claim 1, characterized in that, The basis weight of the paper base layer is 40-200 g / m².

4. The photo-thermal sterilization composite film according to claim 1, characterized in that, The thickness of the alkylated modified phthalocyanine coating is 1 to 10 micrometers.

5. The photo-thermal sterilization composite film according to claim 1, characterized in that, The heat-sealing coating includes a water-based acrylic coating.

6. The photo-thermal sterilization composite film according to claim 5, characterized in that, The thickness of the water-based acrylic coating is 2-5 micrometers.

7. The photo-thermal sterilization composite film according to claim 1, characterized in that, The ink printing layer includes a water-based ink printing layer.

8. A package, characterized in that Including the photothermal sterilization composite film as described in any one of claims 1 to 7.

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