Packaging material, packaging container, desiccant packaging product, and deoxidant packaging product

Abstract

The utility model relates to the technical field of packaging materials, in particular to a packaging material, a packaging container, a drying agent packaging product and a deoxidant packaging product. The packaging material comprises a polyethylene spun-bonded non-woven fabric having a first surface and a second surface opposite to each other; the polyethylene plastic film is provided with a third surface and a fourth surface, the third surface is connected to the second surface in a hot melting mode, the fourth surface is opposite to the third surface, and the polyethylene plastic film is provided with a plurality of air holes which are formed in a laser mode and penetrate through the third surface and the fourth surface.

Description

Technical Field

[0001] This application relates to the field of packaging materials technology, and in particular to a packaging material, packaging container, desiccant packaging product, and oxygen absorber packaging product. Background Technology

[0002] To maximize the absorbent properties of desiccants or oxygen absorbers, highly breathable packaging materials such as polyethylene spunbond nonwoven fabric are typically used. However, the air permeability of polyethylene spunbond nonwoven fabric can only be altered by controlling its manufacturing process, and the degree of change is limited. In some applications, using polyethylene spunbond nonwoven fabric exclusively as the packaging material for desiccants or oxygen absorbers may result in excessively high air permeability. Alternatively, manufacturers of desiccants or oxygen absorbers may not be able to produce products with varying moisture absorption or oxygen removal rates to meet diverse market demands. Summary of the Invention

[0003] The first objective of this application is to provide a packaging material, a packaging container, a desiccant packaging product, and an oxygen absorber packaging product.

[0004] Firstly, a packaging material is proposed, comprising:

[0005] Polyethylene spunbond nonwoven fabric has a first surface and a second surface that are opposite to each other;

[0006] A polyethylene plastic film having a third surface that is thermally fused to the second surface and a fourth surface opposite to the third surface, thermally fused to the polyethylene spunbond nonwoven fabric, the polyethylene plastic film having a plurality of air pores formed by laser engraving and penetrating the third surface and the fourth surface.

[0007] In some possible implementations, the bonding of the polyethylene plastic film to the polyethylene spunbond nonwoven fabric does not use an adhesive.

[0008] In some possible implementations, including:

[0009] The identification pattern is formed on the first surface by laser printing on the polyethylene spunbond nonwoven fabric.

[0010] In some possible implementations, the logo pattern does not contain ink.

[0011] In some possible implementations, the identification pattern includes at least one of the following: text pattern, number pattern, and symbol pattern.

[0012] In some possible implementations, both the polyethylene spunbond nonwoven fabric and the polyethylene plastic film contain a light-blocking agent.

[0013] In some possible implementations, the vent is configured to allow water vapor and / or oxidation to pass through.

[0014] In a second aspect, a packaging container is provided, comprising the packaging material as described in the first aspect, wherein the first surface defines at least a portion of the outer surface of the packaging container, and the fourth surface defines a portion of the inner surface of the packaging container.

[0015] Thirdly, a desiccant packaging product is proposed, including:

[0016] Desiccant;

[0017] The packaging container as described in the second aspect contains the desiccant;

[0018] The vent is configured to allow water vapor from the environment to enter the interior of the packaging container and come into contact with the desiccant.

[0019] Fourthly, an oxygen scavenger packaging product is proposed, comprising:

[0020] Oxygen scavenger;

[0021] The packaging container as described in the second aspect contains the oxygen scavenger;

[0022] The vent is configured to allow oxygen from the environment to enter the interior of the packaging container and come into contact with the oxygen scavenger.

[0023] The packaging material provided according to this application includes: a polyethylene spunbond nonwoven fabric having a first surface and a second surface opposite to each other; a polyethylene plastic film having a third surface bonded to the second surface and a fourth surface opposite to the third surface, the polyethylene plastic film having a plurality of air pores formed by laser engraving and penetrating the third and fourth surfaces. Therefore, the size, density, and number of air pores on the polyethylene plastic film can be configured by adjusting the relevant process parameters of laser engraving according to the target air permeability for the packaged material, thereby adjusting the air permeability of the packaging material to the desired value. Thus, even if the type of polyethylene spunbond nonwoven fabric purchased by the manufacturer of products such as desiccant packaging products or oxygen absorber packaging products is not adjusted, products with a target dehumidification rate or target oxygen removal rate can be easily manufactured. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0025] Figure 1 This is an exploded view of the packaging material provided in the embodiments of this application.

[0026] Figure 2 yes Figure 1 A magnified view of point X1 in the middle.

[0027] Figure 3 This is a schematic diagram of the packaging product provided in the embodiments of this application, wherein the X2 section is cut open.

[0028] Figure 4 yes Figure 3 A magnified view at point X2.

[0029] Explanation of reference numerals in the attached figures:

[0030] DR1 - Longitudinal direction, DR2 - Lateral direction, DR3 - Depth direction;

[0031] 100 - Packaging material, 200 - Packaging container, 300 - Object being packaged;

[0032] 1-Polyethylene spunbond nonwoven fabric, 1a-First surface, 1b-Second surface

[0033] 2-Polyethylene plastic film, 2a-Third surface, 2b-Fourth surface;

[0034] 3- Ventilation holes;

[0035] 4- Logo / pattern;

[0036] 5- Interior space;

[0037] 6-Inner surface;

[0038] 7-Outer surface. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0040] In the description of this application, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects, and, for example, the term "first element" itself does not imply the existence of a "second element," nor does the term "second element" itself imply the existence of a "first element." Furthermore, words such as "a" or "one" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0041] In the description of this application, the terms "comprising" or "having" indicate the presence of the said features, numbers, operations, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, and / or combinations thereof.

[0042] In the description of this application, references to "one embodiment" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0043] Figure 1 The packaging material 100 provided in an embodiment of this application is shown, and Figure 2 A packaging container 200 with an internal space 5, made using the packaging material 100, is shown. Figure 3 It shows Figure 2 A magnified view of a portion of it.

[0044] exist Figure 2 In this embodiment, the packaging container 200 is in the form of a bag, used to contain (package) a solid substance (the packaged object 300) capable of absorbing specific gases from the environment, thereby removing those specific gases from the environment. The solid substance can be granular or powdery. In some embodiments, the packaged object 300 containing the solid substance in the packaging container 200 is a desiccant for absorbing water vapor from the environment, which can be applied in scenarios requiring low ambient humidity. In other embodiments, a fixative or an oxygen absorber for absorbing oxygen from the environment can be applied in scenarios requiring low ambient oxygen content, for example, in the storage of fresh produce to extend its shelf life.

[0045] Please see also Figures 1 to 3The packaging material 100 has a two-layer structure, which includes a polyethylene spunbond nonwoven fabric 1 and a polyethylene plastic film 2 stacked together. The polyethylene spunbond nonwoven fabric 1 is located on the outer side of the polyethylene plastic film 2, that is, compared with the polyethylene spunbond nonwoven fabric 1, the polyethylene plastic film 2 is closer to the internal space 5 of the packaging container 200.

[0046] The polyethylene spunbond nonwoven fabric 1 has a first surface 1a and a second surface 1b that are opposite to each other, and the first surface 1a defines at least a portion of the outer surface 7 of the packaging container 200.

[0047] The polyethylene plastic film 2 has a third surface 2a and a fourth surface 2b that are opposite to each other, wherein the third surface 2a is thermally bonded to the second surface 1b of the polyethylene spunbond nonwoven fabric 1, and the fourth surface 2b defines at least a portion of the inner surface 6 of the packaging container 200. Therefore, the aforementioned fixing material, which is the packaged object 300, can come into contact with the polyethylene plastic film 2.

[0048] Those skilled in the art will understand that the polyethylene spunbond nonwoven fabric 1 and the polyethylene plastic film 2 have different physical properties, particularly different air permeability, due to manufacturing processes and other factors. Specifically, the polyethylene spunbond nonwoven fabric 1 has micropores (breathable micropores), thus it inherently has relatively good air permeability, but its air permeability can only be controlled based on process adjustments made by the original manufacturer. However, the air permeability of the polyethylene plastic film 2 is significantly worse than that of the polyethylene spunbond nonwoven fabric 1. Thus, while water vapor and / or oxygen from the environment can easily pass through the polyethylene spunbond nonwoven fabric 1, they are blocked outside the inner polyethylene plastic film 2. As a result, the desiccant and / or oxygen absorber in the internal space 5 cannot effectively absorb water vapor and / or oxygen from the external environment.

[0049] Advantageously, in this embodiment, the polyethylene plastic film 2 has multiple vent holes 3 formed by laser engraving, which penetrate the fourth surface 2b and the third surface 2a of the polyethylene plastic. Thus, water vapor and / or oxygen, which would otherwise be blocked by the polyethylene plastic film 2, can enter the internal space 5 of the packaging container 200 through the vent holes 3, and be absorbed by the desiccant and / or oxygen absorber inside. More advantageously, in practice, the size, density, and number of the vent holes 3 can be configured by adjusting the relevant laser engraving process parameters to control the air permeability of the polyethylene plastic film 2 and thereby the overall air permeability of the packaging material 100, thereby achieving the desired water vapor permeability and / or oxygen permeability.

[0050] In this embodiment, the outer polyethylene spunbond nonwoven fabric 1 and the inner polyethylene plastic film 2 are bonded together by heat fusion without the use of adhesives. As a result, on the one hand, the polymer material used in the packaging material 100 and the packaging container 200 has a single component—polyethylene—making it easy to recycle and reuse; on the other hand, it can easily meet environmental protection requirements.

[0051] Furthermore, a marking pattern 4, which is ink-free, is formed on the first surface 1a by laser engraving of the polyethylene spunbond nonwoven fabric 1. The marking pattern 4 can be at least one of text, numbers, or symbols, used to visually identify product information of the packaged object 300. Since the marking pattern 4 is formed by laser engraving, it does not contain polluting ink and can easily meet environmental protection requirements.

[0052] In some embodiments, the polyethylene spunbond nonwoven fabric 1 used to provide the marking pattern 4 contains a light-blocking agent. As a result, the marking pattern 4 formed thereon by laser engraving has high clarity. Furthermore, the inner polyethylene plastic film 2 may also contain a light-blocking agent, so that even if the marking pattern 4 penetrates the polyethylene spunbond nonwoven fabric 1 and reaches the polyethylene plastic film 2 due to excessive laser power during processing, a clear marking pattern 4 can still be obtained.

[0053] The thickness of the polyethylene spunbond nonwoven fabric 1 can be 10um-50um, and the thickness of the polyethylene plastic film 2 can also be 10um-50um. Furthermore, the thicknesses of the two can be the same or different.

[0054] This application embodiment also provides a desiccant packaging product, including the above-mentioned packaging container 200 and a desiccant as the packaged item. The packaging container 200 contains the desiccant, and the vent holes 3 of the polyethylene plastic film 2 are configured to allow water vapor in the environment to enter the interior of the packaging container 200, thereby contacting the desiccant and being absorbed by the desiccant.

[0055] This application embodiment also provides an oxygen scavenger packaging product, including the above-mentioned packaging container 200 and an oxygen scavenger as the packaged object. The packaging container 200 contains the oxygen scavenger, and the vents 3 of the polyethylene plastic film 2 are configured to allow oxygen from the environment (e.g., a freezer) to enter the interior of the packaging container 200, thereby contacting the oxygen scavenger and being absorbed by it.

Claims

1. A packaging material, characterized in that, Comprising: a polyethylene spunbond nonwoven having a first surface and a second surface opposite to each other; a polyethylene plastic film having a third surface heat-fused to the second surface and a fourth surface opposite to the third surface, the polyethylene plastic film having a plurality of air-permeable holes formed by laser irradiation and penetrating through the third surface and the fourth surface.

2. The packaging material of claim 1, wherein, The polyethylene plastic film is joined to the polyethylene spunbond nonwoven without using an adhesive.

3. The packaging material of claim 1, wherein, Comprising: an identification pattern formed on the first surface by laser printing on the polyethylene spunbond nonwoven.

4. The packaging material of claim 3, wherein, The identification pattern does not contain ink.

5. The packaging material of claim 3, wherein, The identification pattern includes at least one of a character pattern, a number pattern, and a symbol pattern.

6. The packaging material according to any one of claims 1 to 5, characterized in that, Both the polyethylene spunbond nonwoven and the polyethylene plastic film contain an opacifying agent.

7. The packaging material according to any one of claims 1 to 5, characterized in that, The air-permeable holes are configured to pass water vapor and / or oxygen therethrough.

8. A packaging container, characterized in that Comprising the packaging material according to any one of claims 1 to 7, the first surface defining at least a portion of an outer surface of the packaging container, the fourth surface defining a portion of an inner surface of the packaging container.

9. A desiccant packaging product characterized by, Comprising: a desiccant; the packaging container according to claim 8, containing the desiccant; wherein the air-permeable holes are configured to allow water vapor in the environment to enter an interior of the packaging container to contact the desiccant.

10. An oxygen scavenger packaging product characterized by comprising Comprising: an oxygen scavenger; the packaging container according to claim 8, containing the oxygen scavenger; wherein the air-permeable holes are configured to allow oxygen in the environment to enter an interior of the packaging container to contact the oxygen scavenger.

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