KR102761801B1 - Buffer packaging article using air layer and method for preparing the same - Google Patents

Abstract

Provided are a packaging article and a method for manufacturing the same, which improves cushioning properties by using an air layer while preventing shaking and firmly fixing a packaging object. The cushioning packaging article comprises: an outer film layer including an upper layer and a lower layer connected to each other; and an inner film layer disposed between the upper layer and the lower layer of the outer film layer, including an upper layer and a lower layer connected to each other, and interposing an air layer therebetween with the outer film layer, wherein one end of the outer film layer and the inner film layer in a first direction together forms a first fused portion, and the other end of the outer film layer and the inner film layer in the first direction together forms a second fused portion.

Description

{BUFFER PACKAGING ARTICLE USING AIR LAYER AND METHOD FOR PREPARING THE SAME}

The present invention relates to a cushioning packaging article. More specifically, it relates to a packaging article that can improve cushioning properties by using an air layer while preventing shaking and firmly fixing an article to be packaged, and a method for manufacturing the same. More specifically, it relates to a method for transporting the article while preserving it in its original form as it was produced.

The distribution industry has been growing rapidly recently, thanks to developments in logistics technology and online purchase order processing management technology. Accordingly, online distribution companies are introducing differentiated delivery strategies, such as dawn delivery and rocket delivery, compared to existing logistics delivery. In addition, non-face-to-face technology, which has been in the spotlight, has experienced explosive growth due to COVID-19, and even greater growth is expected in the future.

Generally, items ordered online are delivered from the producer, seller, or consignor to the buyer by courier, etc. According to data released by the Ministry of Land, Infrastructure and Transport of the Republic of Korea, the number of parcels delivered in Korea in 2019 was approximately 2.8 billion, and in 2020, it is estimated that the demand for parcels will increase rapidly.

KR 20-0235839 Y1 KR 20-0307704 Y1 KR 20-0282230 Y1

Conventionally, cardboard boxes are mainly used as delivery boxes. However, most paper boxes are produced in a standardized manner and do not reflect the size of the packaged item (or the item to be delivered). If the packaged item is not completely fixed due to the difference in size between the space inside the delivery box and the packaged item, the item may be damaged during delivery. To prevent this, the packaged item is wrapped with air caps or air bags, or cushioning material is placed in the remaining space inside the delivery box.

However, this method causes a significant amount of plastic waste. In addition, it causes an unnecessary increase in logistics volume because it uses a delivery box that is excessively large compared to the actual size of the packaged item. In other words, the number of packages that a delivery vehicle can load at one time is limited, and an increase in logistics volume leads to a decrease in the number of packages loaded onto the vehicle, which reduces delivery efficiency, and requires additional transportation, which causes environmental pollution and increases carbon emissions.

Meanwhile, in order to solve the above problems, attempts are being made to wrap the items to be packaged in packaging materials called air bags or air packing instead of using paper boxes. Air packing is known to be manufactured using linear low-density polyethylene (LLDPE) and nylon. Air packing has a very thick air layer between tough films made of polyethylene and/or nylon, so even if it is delivered in that state without wrapping it in a paper box, its delivery stability is relatively high.

However, air packing is usually delivered to a logistics company filled with air, but it has a problem in that its volume itself is very large and takes up a considerable amount of space. In other words, in addition to the warehouse storing the items to be packaged, there is a problem in that a separate warehouse is needed to store the air packing used to package the items to be packaged.

In addition, there have been continuous attempts to improve packaging efficiency of items to be packaged using various methods, such as those described in Patent Documents 1 to 3, but they are still unable to replace paper delivery boxes.

Accordingly, the problem that the present invention seeks to solve is to provide a cushioning packaging product that has high packaging stability while minimizing the occurrence of environmental pollution. In addition, from the perspective of a logistics company, it provides a cushioning packaging product that can reduce the cost, space, and work time required for the packaging process and prevent damage to the product.

Another problem that the present invention seeks to solve is to provide a method for manufacturing the above-mentioned packaging article.

Another problem that the present invention seeks to solve is to provide a packaging article manufacturing device used for manufacturing the above-mentioned packaging article.

The tasks of the present invention are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the description below.

According to one embodiment of the present invention for solving the above problem, a cushioning packaging article comprises: an outer film layer including an upper layer and a lower layer connected to each other; and an inner film layer disposed between the upper layer and the lower layer of the outer film layer, including an upper layer and a lower layer connected to each other, and interposing an air layer therebetween with the outer film layer, wherein one end of the outer film layer and the inner film layer in a first direction together forms a first fused portion, and the other end of the outer film layer and the inner film layer in the first direction together forms a second fused portion.

In the cross-section cut in the first direction, the upper layer and the lower layer of the outer film layer, and the upper layer and the lower layer of the inner film layer can be connected through the first fusion portion and the second fusion portion.

In addition, in a cross-section cut in a second direction intersecting the first direction, the outer film layer and the inner film layer may be spaced apart to form the air layer.

The above outer film layer and the inner film layer can be physically separated from each other except for the first fusion portion and the second fusion portion.

At this time, the first internal space formed by the outer film layer, the inner film layer, the first fusion portion, and the second fusion portion can be sealed to form the air layer.

In addition, the second internal space formed by the upper layer and lower layer of the inner film layer, the first fusion portion, and the second fusion portion can be sealed and separated from the external space.

According to another embodiment of the present invention for solving the above problem, a cushioning packaging article comprises: a tubular outer tube having one end in a first direction and the other end closed; a tubular inner tube disposed within the outer tube and having one end in the first direction and the other end closed; and an article to be packaged disposed within the inner tube, wherein the one end and the other end of the outer tube are respectively fused together with the one end and the other end of the inner tube.

According to one embodiment of the present invention for solving the above-described other problems, a method for manufacturing a packaging article comprises: preparing a tubular-shaped outer tube having a shape extending in the longitudinal direction, preparing an inner tube having a tubular shape and arranged inside the outer tube, cutting the outer tube and the inner tube at a predetermined position in the longitudinal direction to form the other end, introducing an article to be packaged into the inner tube, solidifying it by vacuum, sucking and injecting air into a space between the outer tube and the inner tube, and fusing one end and the other end of the outer tube and the inner tube.

According to another embodiment of the present invention for solving the above-described other problems, a method for manufacturing a packaging article comprises: preparing a tubular-shaped outer tube having a shape extending in the longitudinal direction, preparing an inner tube as a tubular-shaped inner tube and arranged inside the outer tube, fusing one longitudinal end of the outer tube and the inner tube, cutting the outer tube and the inner tube at a predetermined longitudinal position to form the other end of the outer tube and the inner tube, introducing an article to be packaged into the inner tube through an opening in the longitudinal end of the cut inner tube, injecting air into a space between the cut outer tube and the inner tube by vacuuming, and fusing the longitudinal end of the cut outer tube and the inner tube.

According to one embodiment of the present invention for solving the above-described further object, a device for manufacturing a packaging article comprises: an unwinding roll section from which a tube roll including a tubular-shaped outer tube and an inner tube arranged within the outer tube is unwound; a cutter section configured to cut a predetermined longitudinal position of the tube unwound from the unwinding roll section; a fusing section configured to heat-fuse any longitudinal end of the tube cut by the cutter; and an air injection section and an air vacuum section configured to inject air into the tube cut by the cutter.

Specific details of other embodiments are included in the detailed description.

According to embodiments of the present invention, a cushioning packaging article having excellent packaging stability can be provided in a relatively simple manner. That is, even when the article is shaken violently or an external force is applied during delivery, the air-filled cushioning layer can be stably maintained, and damage to the article to be packaged can be minimized.

In addition, it is environmentally friendly as it can reduce the size and weight of the delivered cushioned packaging items, and it is easy to separate and recycle the materials of the packaging items after delivery is complete.

In addition, you can freely print the company's image logo, and you can also proceed with design and product launch according to needs confidentially and quickly.

Since the size and shape can be varied, it can attempt a groundbreaking change from the existing simplified and uniform box-shaped design, which can increase the value of the product, enhance the value image of the product delivery company, and increase the satisfaction of the consumer who receives the product.

In addition, when delivering parcels by drone, safety accidents can be reduced in case the parcel falls, and unlike boxes made of paper, damage to the parcel can be prevented in environments such as rain.

The effects according to the embodiments of the present invention are not limited to the contents exemplified above, and more diverse effects are included in this specification.

Figure 1 is a cross-sectional view of a packaging article according to a comparative example of the present invention.
Figure 2 is a perspective projection view of a packaging article according to one embodiment of the present invention.
Figure 3 is a cross-sectional view of the packaging article of Figure 2 cut in the first direction.
Fig. 4 is a cross-sectional view of the packaging article of Fig. 2 cut in the second direction.
Figure 5 is a flowchart showing a method for manufacturing a packaging article according to one embodiment of the present invention.
Figure 6 is a flowchart showing a method for manufacturing a packaging article according to another embodiment of the present invention.
FIG. 7 is a schematic diagram showing a manufacturing device for a packaging article used in the manufacturing method according to the embodiment of FIG. 6.
FIGS. 8 to 11 are drawings showing a method for manufacturing a packaging article according to the embodiment of FIG. 6.
Figure 12 is a flowchart showing a method for manufacturing a packaging article according to another embodiment of the present invention.
Fig. 13 is a schematic diagram showing a manufacturing device for a packaging article used in the manufacturing method according to the embodiment of Fig. 12.
FIGS. 14 to 18 are drawings showing a method for manufacturing a packaging article according to the embodiment of FIG. 12.
Figure 19 is a flowchart showing a method for manufacturing a packaging article according to another embodiment of the present invention.
Fig. 20 is a schematic diagram showing a manufacturing device for a packaging article used in the manufacturing method according to the embodiment of Fig. 19.
FIGS. 21 to 25 are drawings showing a method for manufacturing a packaging article according to the embodiment of FIG. 19.
Figure 26 is a flowchart showing a method for manufacturing a packaging article according to another embodiment of the present invention.
FIGS. 27 to 31 are drawings showing a method for manufacturing a packaging article according to the embodiment of FIG. 26.

The advantages and features of the present invention, and the methods for achieving them, will become clear with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and the embodiments are provided only to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. That is, various changes may be made to the embodiments presented by the present invention. The embodiments described below are not intended to limit the embodiments, and should be understood to include all changes, equivalents, and substitutes therefor.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with a meaning that can be commonly understood by a person of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries shall not be ideally or excessively interpreted unless explicitly specifically defined.

The spatially relative terms "above," "upper," "on," "below," "beneath," "lower," and the like can be used to easily describe the relationship of one element or component to another element or component, as depicted in the drawings. The spatially relative terms should be understood to include different orientations of the elements when used in addition to the orientations depicted in the drawings. For example, if an element depicted in a drawing is flipped, an element described as "below" or "beneath" another element may actually be "above" the other element. Thus, the exemplary term "below" can include both above and below directions.

In this specification, 'and/or' includes each and every combination of one or more of the items mentioned. Also, the singular includes the plural unless specifically stated otherwise in the phrase. As used herein, 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components other than the mentioned components. A numerical range indicated by using 'to' indicates a numerical range that includes the values stated before and after it as the lower and upper limits, respectively. 'About' or 'approximately' means a value or numerical range that is within 20% of the value or numerical range stated after it.

In this specification, when referring to a component, ordinal modifiers such as “first component,” “second component,” “1-1st component,” etc. are only used to distinguish one component from another component. Therefore, the first component referred to below may be referred to as the second component within the scope of the technical idea of the present invention. For example, what is referred to as the first component in one embodiment may be referred to as the second component in another embodiment. In addition, what is referred to as the first component in the description of the invention may of course be referred to as the second component in the claims.

Also, the first direction (X) means any one direction within the plane, the second direction (Y) means another direction intersecting or perpendicular to the first direction (X) within the plane, and the third direction (Z) means another direction intersecting or perpendicular to the plane. Unless otherwise defined, the term "plane viewpoint" in this specification means a viewpoint looking at the plane to which the first direction (X) and the second direction (Y) belong.

The size, thickness, width, length, etc. of the components depicted in the drawings may be exaggerated or reduced for convenience and clarity of explanation, and therefore the present invention is not limited to the illustrated form.

FIG. 1 is a cross-sectional view of a packaging article according to a comparative example of the present invention, wherein FIG. 1a shows a state before air is injected enough to fix the position of the packaging object, FIG. 1b shows a state after air is injected enough to fix the position of the packaging object, and FIG. 1c shows a state when the packaging article is shaken. FIG. 1 shows a comparative example implemented by the inventor of the present invention with reference to the technical ideas disclosed in prior arts, and it goes without saying that the comparative example disclosed in FIG. 1 should not be immediately recognized as prior art.

First, referring to Fig. 1a, a packaging article (10') according to a comparative example of the present invention has a shape in which one side (the right side based on Fig. 1a) is opened (10p) and includes an outer wall portion (100') and an inner wall portion (200') that are connected to each other.

Between the outer wall portion (100') and the inner wall portion (200'), a sealed first inner space (S1) is formed, and air is filled in the first inner space (S1) to provide a buffering function. In addition, a packaging target item (or packaging target) (400) is placed in the second inner space (S2) between the inner walls (200') facing each other. The packaging target item (400) is introduced into the second inner space (S2) through the opening (10p). Therefore, the second inner space (S2) is connected to the outer space through the opening (10p). Fig. 1a exemplifies a case where the facing walls surrounding the opening (10p) are in contact, but the facing walls may be spaced apart. A packaging target item (400) such as Fig. 1a is also called air packing, etc.

Some prior arts, for example, Patent Document 1, disclose a technical idea of injecting more air into the first internal space (S1) to close the inner wall portion (200') to the packaging target article (400). However, after numerous experiments, the inventor of the present invention confirmed that such a packaging article is difficult to implement, and thus completed the present invention.

When air is injected into the first internal space (S1), the inner wall portion (200') is intended to swell inward due to the increase in pressure of the first internal space (S1) and to adhere closely to the packaging target item (400), but the inner wall portion (200') swells inward and the outer wall portion (100') swells outward at the same time as the component. In particular, after a certain moment has passed since the inner wall portion (200') touches the packaging target item (400), the degree to which the outer wall portion (100') swells outward becomes greater than the degree to which the inner wall portion (200') swells inward. That is, even if air is injected into the first internal space (S1) of the packaging target item (400) as shown in Fig. 1a, it is difficult to firmly fix the packaging target item (400) and there is a problem that the outer size cannot be implemented consistently.

To solve this problem, it may be considered to form the outer wall portion (100') and the inner wall portion (200') with different materials. Although it is not easy to implement to form the outer wall portion (100') and the inner wall portion (200') with different materials, the outer wall portion (100') is made of a material that has a small degree of shape change despite an increase in pressure in the first internal space (S1), and the inner wall portion (200') is made of a material that has a large degree of shape change, and a case in which air is injected into the first internal space (S1) is shown in Fig. 1b.

That is, in Fig. 1b, the outer wall portion (100') uses a robust material that swells and deforms only to a predetermined shape, and the inner wall portion (200') uses a flexible material that expands and contracts so that the first internal space (S1) can maintain an atmospheric pressure state. Fig. 1c shows a case where a packaged article (10') packaged as in Fig. 1b is shaken during delivery.

Referring to FIGS. 1b and 1c, the inner wall portion (200') can be pressed against the packaging target object (400) as disclosed in some prior arts. However, if the packaging target object (400) has a predetermined weight, or if an external force is applied to the packaging target object (400) during the delivery process, or if the packaging target object (400) is shaken, pressure is applied to the first internal space (S1). At this time, since the outer wall portion (100') is intended not to substantially change in shape even when the pressure of the first internal space (S1) increases, the pressure of the first internal space (S1) leads to a change in the shape of the inner wall portion (200'). For example, as shown in FIG. 1c, the weight of the packaging target object (400) presses downward on the inner wall portion (200') supporting the packaging target object (400), causing the inner wall portion (200') to sag downward. At this time, the air layer between the inner wall (200') and the outer wall (100') on the lower side of the packaging target item (400) becomes shallow and can no longer provide a cushioning function.

The problem of the comparative example described in the above-mentioned drawings 1 is that the outer wall part (100') and the inner wall part (200') are formed of a single film connected, the first inner space (S1) is sealed to form a space separated from the outer space, but the second inner space (S2) is not sealed and is fluidly connected to the outer space, and as a result, there is no reference point for firmly holding the packaging target article (400) and fixing its position, which causes the problem. Based on the recognition of the above problems, the inventor of the present invention has completed the present invention.

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

Fig. 2 is a perspective projection view of a packaging article according to one embodiment of the present invention. Fig. 3 is a cross-sectional view of the packaging article of Fig. 2 cut in a first direction, and is a cross-sectional view cut in the first direction from a central position in the second direction. Fig. 4 is a cross-sectional view of the packaging article of Fig. 2 cut in a second direction, and is a cross-sectional view cut in the second direction from a central position in the first direction.

Referring to FIGS. 2 to 4, a cushioning packaging article (11) according to one embodiment of the present invention includes an outer film layer (100) (or an outer tube, or an outer tube layer, or an outer wall layer) and an inner film layer (200) (or an inner tube, or an inner tube layer, or an inner wall layer), and may further include an article to be packaged (400).

The outer film layer (100) may be a tubular or tube-shaped one end and the other end in the first direction (X) are closed and sealed. Accordingly, in a cross-section cut in the first direction (X) or the second direction (Y), the outer film layer (100) may be expressed as an outer upper layer (110) and an outer lower layer (120) facing each other in the third direction (Z). The terms upper layer and lower layer may indicate positions based on the packaging target item (400).

In addition, the outer film layer (100) may further include an outer side (130). The outer side (130) may refer to a portion connecting the outer upper layer (110) and the outer lower layer (120). The outer side (130) may be expressed in a cross-section cut in the second direction (Y) of the packaging article (11), but the present invention is not limited thereto. The outer side (130) may have a smoothly connected curved shape, but the present invention is not limited thereto. The outer upper layer (110), the outer lower layer (120), and the outer side (130) may be formed integrally without a physical boundary with each other.

As a non-limiting example, the packaged article (11) according to the present embodiment can be directly delivered by logistics without a separate paper box packaging on the outside. In order to prevent damage to the outer film layer (100) despite impact during the logistics delivery process, the outer film layer (100) can be made of a polymer film material having relatively high strength and rigidity.

Likewise, the inner film layer (200) may be a tubular or tube-shaped one end and the other end may be closed and sealed in the first direction (X). Accordingly, in a cross-section cut in the first direction (X) or the second direction (Y), the inner film layer (200) may be expressed as an inner upper layer (210) and an inner lower layer (220) facing each other in the third direction (Z). The terms upper layer and lower layer may indicate positions based on the packaging target article (400).

In addition, the inner film layer (200) may further include an inner side (230). The inner side (230) may refer to a portion connecting the inner upper layer (210) and the inner lower layer (220). The inner side (230) may be expressed in a cross-section cut in the second direction (Y) of the packaging article (11), but the present invention is not limited thereto. The inner side (230) may have a wrinkled shape so as to be in close contact with the side of the packaging target article (400), but the present invention is not limited thereto. The inner side (230) may also have a smoothly connected curved shape. The inner upper layer (210), the inner lower layer (220), and the inner side (230) may be formed integrally without a physical boundary with each other.

The outer film layer (100) and the inner film layer (200) may be made of the same or different materials. In addition, at least one of the outer film layer (100) and the inner film layer (200) may be made of a biodegradable polymer synthetic resin film, etc.

As described later, the inner film layer (200) may swell inwardly and adhere to the packaging target article (400) by air injection into the first internal space (S1). Although FIG. 3 and the like illustrate a case where the packaging target article (400) has an approximately rectangular shape, the packaging target article (400) may have a wide variety of shapes depending on the case. Accordingly, the inner film layer (200) may be made of a polymer film material that is more flexible and thinner, and has lower strength and rigidity, compared to the outer film layer (100) in terms of ease of expansion and adhesion to the packaging target article (400).

The space between the outer film layer (100) and the inner film layer (200) can be sealed to form a first inner space (S1) separated from the outer space. The first inner space (S1) can form a thick air layer to provide a cushioning function for the product to be packaged (400). The first inner space (S1) between the outer upper layer (110) and the inner upper layer (210), the first inner space (S1) between the outer side (130) and the inner side (230), and the first inner space (S1) between the outer lower layer (120) and the inner lower layer (220) can be connected to each other. Air can be filled or injected into the first inner space (S1) to expand the outer film layer (100) outwardly to a predetermined degree and to expand the inner film layer (200) inwardly to sufficiently adhere to the product to be packaged (400). The pressure inside the first internal space (S1) may be at the atmospheric pressure level.

A packaging target item (400) (i.e., a packaging target item) may be placed within a tube-shaped inner film layer (200). That is, the packaging target item (400) may be placed between an inner upper layer (210) and an inner lower layer (220) that face each other. In a cross-section cut in the second direction (Y), the packaging target item (400) may be surrounded by an inner upper layer (210), an inner lower layer (220), and an inner side portion (230) that faces each other. Although FIG. 2 and the like illustrate a case where the packaging target item (400) has a rectangular parallelepiped shape, it should be understood that the present invention is not limited thereto. The packaging target item (400) may refer to an item that a logistics company intends to deliver to a consumer.

As described above, both the outer film layer (100) and the inner film layer (200) may be tube-shaped with one end (the left end in FIG. 3) and the other end (the right end in FIG. 3) in the first direction (X) closed. In this case, the outer film layer (100) and the inner film layer (200) may be sealed by being fused together (e.g., heat-fused).

In an exemplary embodiment, one end of the outer film layer (100) and one end of the inner film layer (200) may together form a first fusion portion (310) (or a first fixing portion, or a first joining portion). In addition, the other end of the outer film layer (100) and the other end of the inner film layer (200) may together form a second fusion portion (320) (or a second fixing portion, or a second joining portion).

Specifically, in a cross-section cut in the first direction (X), an upper inner layer (210) and a lower inner layer (220) are interposed between the upper outer layer (110) and the lower outer layer (120), and the upper inner layer (210) and the lower inner layer (220) can at least partially contact each other. In addition, the sequentially laminated lower outer layer (120), the lower inner layer (220), the upper inner layer (210), and the upper outer layer (110) can be fused together to partially form a first fused portion (310) and a second fused portion (320). In other words, the first fusion portion (310) and the second fusion portion (320) that seal one end and the other end of the outer film layer (100) may be understood to refer to substantially the same configuration as the first fusion portion (310) and the second fusion portion (320) that seal one end and the other end of the inner film layer (200), respectively, or to overlap in the third direction (Z).

In this specification, fusion means processing a polymer film, etc., by partially melting it so that it can be bonded to an adjacent component. In addition, a welded portion means a portion where the surface or the inside of a polymer film, etc. is partially melted and irreversibly deformed, thereby contributing to bonding. As a non-limiting example, in the first fusion portion (310) and/or the second fusion portion (320), the interfaces of the outer skin lower layer (120), the inner skin lower layer (220), the inner skin upper layer (210), and the outer skin upper layer (110) may be at least partially mixed with each other or may not be visible.

In a cross-section cut in the second direction (Y), the outer film layer (100) and the inner film layer (200) may be spaced apart from each other. For example, the outer side (130) and the inner side (230) may be spaced apart from each other in the second direction (Y). In addition, the outer upper layer (110) and the inner upper layer (210), and the outer lower layer (120) and the inner lower layer (220) may be spaced apart from each other in the third direction (Z). The space between the outer film layer (100) and the inner film layer (200) may correspond to the first internal space (S1).

Since one end and the other end in the first direction (X) of the outer film layer (100) are sealed by the first fusion portion (310) and the second fusion portion (320), the interior of the outer film layer (100) can form a sealed space separated from the exterior space. At this time, the space surrounded by the inner surface of the outer film layer (100) (e.g., the lower surface of the outer upper layer (110) and the upper surface of the outer lower layer (120)) and the outer surface of the inner film layer (200) (e.g., the upper surface of the inner upper layer (210) and the lower surface of the inner lower layer (220)) can form the first internal space (S1) described above.

In addition, since one end and the other end of the first direction (X) of the inner film layer (200) are sealed by the first fusion portion (310) and the second fusion portion (320), the interior of the inner film layer (200) can form a sealed space separated from the external space and the first internal space (S1). At this time, the space surrounded by the inner surface of the inner film layer (200) (e.g., the lower surface of the inner layer (210) of the inner skin and the upper surface of the inner layer (220) of the inner skin) can define a second internal space (S2). The pressure inside the second internal space (S2) can be at the atmospheric pressure level.

As will be described together with the manufacturing method to be described later, the outer film layer (100) and the inner film layer (200) can each be formed by cutting a tube made of a polymer film. Therefore, the maximum length of the outer film layer (100) of the cushioning packaging article (11) in the first direction (X) and the maximum length of the inner film layer (200) in the first direction (X) may be substantially the same, or may have a difference of about ±5%, or a difference of about ±3%, or a difference of about ±1%. That is, any end of the outer film layer (100) in the first direction (X) and any end of the inner film layer (200) in the first direction (X) may be aligned.

Meanwhile, the width (e.g., maximum width) of the inner film layer (200) in the second direction (Y) may be substantially the same as, or smaller than, the width (e.g., maximum width) of the outer film layer (100) in the second direction (Y). For example, the width in the second direction (Y) at the fusion portions (310, 320) of the inner film layer (200) forms a maximum width and may be substantially the same as the width of the outer film layer (100) at the fusion portions (310, 320). In addition, the width in the second direction (Y) at the center of the first direction (X) of the inner film layer (200) forms a minimum width by being in close contact with the packaging target article (400) and may be smaller than the width of the outer film layer (100) at that location. However, the present invention is not limited thereto.

Hereinafter, a method for manufacturing a cushioning packaging article (11) according to the present invention and a manufacturing device used for manufacturing the same will be described.

Figure 5 is a flowchart showing a method for manufacturing a packaging article according to one embodiment of the present invention.

Referring to FIG. 5, a method for manufacturing a packaging article according to the present embodiment may include preparing an outer tube and an inner tube (S100), cutting the outer tube and the inner tube together at a predetermined location (S200), inserting an article to be packaged into the inner tube (S300), injecting air between the outer tube and the inner tube (S400), sucking and removing air from an internal space of the inner tube (S500), and fusing one end and the other end of the outer tube and the inner tube to form a sealed first internal space and a second internal space (S600).

In the step S100 of preparing an outer tube and an inner tube, the inner tube may be placed inside the outer tube. The outer tube and the inner tube may have a long length in the longitudinal direction. Then, in the cutting step S200, the outer tube and the inner tube having a long length may be cut. At this time, the cutting position may be appropriately selected in consideration of the shape and size of the packaging target product to be packaged. Alternatively, the cutting step may be omitted, and in the preparing step S100, the outer tube and the inner tube may be individually cut into generalized sizes and provided.

And air can be injected into the space between the outer tube and the inner tube, for example, the first inner space described above, to form a buffer layer (S400). At the same time, air can be sucked or inhaled from inside the second inner space so that the inner tube can be in close contact with the product to be packaged (S500). And the first inner space and the second inner space can be sealed through fusion (S600).

According to the manufacturing method of the present embodiment, a cushioning packaging product can be manufactured in a simple manner using tubes of a polymer film material that are long in the longitudinal direction. In addition, since the packaging process is performed while cutting the polymer film that is long in the longitudinal direction as needed, it can be implemented as a continuous process.

In some embodiments, the cutting step (S200) may be omitted. In this case, an outer tube and an inner tube having a predetermined length in the longitudinal direction are prepared (S100), and an introduction step (S300), an air injection step (S400), an air suction step (S500), and a fusion step (S600) may be performed.

It goes without saying that the method for manufacturing a packaging article according to the present embodiment, which is performed as a continuous process, can be performed in the same order as the steps described above, or by changing the order somewhat. Hereinafter, several other in-depth embodiments that can supplement or replace the manufacturing method according to the above-described embodiment will be described.

Fig. 6 is a flow chart showing a method for manufacturing a packaging article according to another embodiment of the present invention. Fig. 7 is a schematic diagram showing a manufacturing device for a packaging article used in the manufacturing method according to the embodiment of Fig. 6. Figs. 8 to 11 are drawings showing a method for manufacturing a packaging article according to the embodiment of Fig. 6.

First, referring to FIG. 6, a method for manufacturing a packaging article according to the present embodiment may sequentially include preparing an outer tube and an inner tube (S110), inserting a packaging object into the inner tube (S310), cutting the outer tube and the inner tube together at a predetermined location (S210), injecting air between the outer tube and the inner tube (S410), sucking and removing air from the internal space of the inner tube (S510), and fusing one end and the other end of the outer tube and the inner tube to form a sealed first internal space and a second internal space (S610).

The manufacturing method according to the present embodiment can be performed as a continuous process in which the introduction step (S310), the cutting step (S210), the air injection step (S410), the air suction step, and the fusion step (S510, S610) form unit processes and these are repeated.

In addition, referring further to FIG. 7, the manufacturing device (901) of a packaging article according to the present embodiment may include an unwinding roll section (910) on which a tube roll (T) is wound, a conveying roll section (915) for guiding the conveyance of the tube roll unwound from the unwinding roll section (910), a cutter section (920) arranged to cut a predetermined position in the length direction of the tube roll (T) unwound from the unwinding roll section (910), one or more fusion performing sections (950) configured to heat-fuse the tube roll (T) unwound from the unwinding roll section (910), and an air injection section (940) and an air suction section (945) configured to inject air between an outer tube and an inner tube of the tube roll (T).

In an exemplary embodiment, one or more fusion performing units (950) may include a first fusion performing unit (951) and a second fusion performing unit (952) positioned downstream of the process relative to the cutter unit (920), but the present invention is not limited thereto. The first fusion performing unit (951) and the second fusion performing unit (952) may be spaced apart from each other by a predetermined distance in the process progress direction. The fusion performing units (950) may be configured to be lifted in the vertical direction or to perform thermal fusion while moving in the width direction of the tube roll (T).

Referring further to FIG. 8, in the step (S110) of preparing the outer tube (100t) and the inner tube (200t), the inner tube (200t) may be placed inside the outer tube (100t). The outer tube (100t) and the inner tube (200t) may have a long length in the longitudinal direction. In an exemplary embodiment, one end (10a) of the outer tube (100t) and the inner tube (200t) in the longitudinal direction may be open rather than sealed. The tube roll (T) including the outer tube (100t) and the inner tube (200t) may be unwound from the unwinding roll unit (910), pass through the transfer roll unit (915), and then be unwound to the vicinity of the air injection unit (940).

Referring further to FIG. 9, the packaging target item (400) is introduced through one end opening (200p) of the inner tube (200t) (S310). The introduction of the packaging target item (400) may be performed at a position after the tube roll (T) passes through the first fusion performing section (951), but the present invention is not limited thereto.

Next, referring further to FIG. 10, the inner tube (200t) and the outer tube (100t) are cut at any lengthwise position (S210). The cutting of the tubes can be performed using the cutter unit (920). As the cutter unit (920) cuts any lengthwise position of the tubes, the cut tubes (100t, 200t) can have an opened end (10a) and the other end (10b). Meanwhile, the tubes (100t, 200t) of one end (10a') of the remaining tube roll (T) excluding the cut portion can also be in an open state. Then, the aforementioned introduction step (S310) can be continuously performed using the remaining tube roll (T) having the opened end (10a'). In some embodiments, the cutting step (S210) can be performed before the introduction step (S310).

Referring further to FIG. 11, air is injected into the space between the outer tube (100t) and the inner tube (200t) (S410), air is sucked out from the inner space of the inner tube (200t) (S510), and both one end (10a) and the other end (10b) of the outer tube (100t) and the inner tube (200t) can be fused (S610).

The injection of air can be performed using an air injection unit (940). In addition, the suction of air can be performed using an air suction unit (945). Fig. 7 illustrates a case where the air injection unit (940) and the air suction unit (945) are configured as one module, but the present invention is not limited thereto. In addition, the injection and suction of air can be performed from one side, but the present invention is not limited thereto.

In addition, the fusion of one end of the outer tube (100t) and the inner tube (200t) can be performed using the second fusion performing unit (952), and the fusion of the other end can be performed using the first fusion performing unit (951). The second fusion performing unit (952) can form the first fusion portion described above, and the first fusion performing unit (951) can form the second fusion portion described above.

In some embodiments, the air injection step (S410), the air suction step (S510), and the fusing step (S610) may be performed simultaneously, sequentially, or in parallel in a subdivided manner. For example, after fusing the other end, the article may be introduced (S310), air may be injected/sucked (S410, S510), and one end may be fused. Alternatively, air may be injected/sucked and one end may be fused simultaneously with the fusing of the other end. Alternatively, after fusing the other end, the article may be introduced (S310), and one end may be partially fused, an air injection unit (940) and an air suction unit (945) may be inserted into a portion of the unfused end to inject/suck air and completely fuse the one end. Alternatively, fusing of the other end and partial fusing of one end may be performed simultaneously, and after injecting/sucking air, the one end may be completely fused.

Through the above-described process, the packaging target product shown in Fig. 2 can be prepared or manufactured.

As described above, in other embodiments, the cutting step may be omitted. That is, FIG. 7 illustrates a case in which a tube roll including an outer tube and an inner tube is prepared, and these are unrolled and cut to a required length for use. However, unlike this embodiment, the outer tube and the inner tube are not provided in the form of a tube roll, but may be used in a state in which they are already cut to a predetermined length.

Fig. 12 is a flow chart showing a method for manufacturing a packaging article according to another embodiment of the present invention. Fig. 13 is a schematic diagram showing a manufacturing device for a packaging article used in the manufacturing method according to the embodiment of Fig. 12. Figs. 14 to 18 are drawings showing a method for manufacturing a packaging article according to the embodiment of Fig. 12.

Referring to FIG. 12, a method for manufacturing a packaging article according to the present embodiment may sequentially include preparing an outer tube and an inner tube (S120), fusing one end of the outer tube and the inner tube (S621), cutting the outer tube and the inner tube together at a predetermined position (S220), introducing a packaging object into the inner tube (S320), partially fusing the other end of the outer tube and the inner tube (S622a), injecting air between the outer tube and the inner tube (S420), sucking and removing air from the internal space of the inner tube (S520), and completely fusing the other ends of the outer tube and the inner tube (S622b).

The manufacturing method according to the present embodiment can be performed as a continuous process in which a fusion step (S621), a cutting step (S220), an introduction step (S320), a partial fusion step (S622a) of the other end, an air injection step (S420), an air suction step (S520) and a complete fusion step of the other end (S622b) form unit processes and these are repeated.

In addition, referring to FIG. 13 further, the device (902) for manufacturing a packaging article according to the present embodiment is different from the device for manufacturing a packaging article according to the above-described embodiment in that the first fusion performing unit is omitted and only the second fusion performing unit (952) is included. The fusion performing unit (950) (second fusion performing unit) may be located downstream of the process compared to the cutter unit (920).

Referring further to FIG. 14, in the step (S120) of preparing the outer tube (100t) and the inner tube (200t), the inner tube (200t) may be placed inside the outer tube (100t). In an exemplary embodiment, one end (10a) of the longitudinal direction of the outer tube (100t) and the inner tube (200t) may be open rather than sealed. The tube roll (T) including the outer tube (100t) and the inner tube (200t) may be unwound from the unwound roll unit (910), passed through the transfer roll unit (915), and then unwound to the vicinity of the fusion performing unit (950) and the air injection unit (940).

Referring further to FIG. 15, one end of the outer tube (100t) and the inner tube (200t) can be fused (S621). The fusion of one end (10a) of the outer tube (100t) and the inner tube (200t) can be performed using a fusion performing unit (950).

Next, referring further to FIG. 16, the inner tube (200t) and the outer tube (100t) are cut at any lengthwise position (S220). As the cutter unit (920) cuts any lengthwise position of the tubes, the cut tubes (100t, 200t) may have an opened other end (10b). As described above, one end (10a) of the tubes (100t, 200t) is sealed or closed in the one-end fusion step (S621). Meanwhile, the tubes (100t, 200t) of one end portion (10a') of the remaining tube roll (T) excluding the cut portion may also be in an open state. In addition, the one-end fusion step (S621) described above may be continuously performed using the remaining tube roll (T) having the opened one end (10a').

Referring further to FIG. 17, the packaging target item (400) is introduced through the other end opening (200p) of the inner tube (200t) (S320). The introduction of the packaging target item (400) may be performed at a position following the cutter section (920), but the present invention is not limited thereto. In another embodiment, the introduction step (S320) may be performed on a separate process table.

Referring further to FIG. 18, air can be injected into the space between the outer tube (100t) and the inner tube (200t) (S420), air can be sucked out from the inner space of the inner tube (200t) (S520), and the other ends of the outer tube (100t) and the inner tube (200t) can be fused (S622a, S622b).

In an exemplary embodiment, the steps of partially fusing the other ends of the outer tube (100t) and the inner tube (200t) (S622a), injecting air through the non-fused opening on the other end (S420), sucking air through the non-fused opening on the other end (S520), and completely fusing the non-fused opening after sufficiently injecting and sucking air (S622b) may be sequentially performed. The fusing steps (S622a, S622b) of the other ends may use the fusing unit (950) used for one end of the fusing, or may use the fusing unit of a separate process table. In addition, it is obvious that the outer tube (100t) and the inner tube (200t) may be flipped over so that the other ends face one side for the process to be performed in order to inject air and fuse the other ends using the fusing unit (950).

Through the above-described process, the packaging target product shown in Fig. 2 can be prepared or manufactured.

Fig. 19 is a flow chart showing a method for manufacturing a packaging article according to another embodiment of the present invention. Fig. 20 is a schematic diagram showing a manufacturing device for a packaging article used in the manufacturing method according to the embodiment of Fig. 19. Figs. 21 to 25 are drawings showing a method for manufacturing a packaging article according to the embodiment of Fig. 19.

Referring to FIG. 19, a method for manufacturing a packaging article according to the present embodiment may sequentially include preparing an outer tube and an inner tube (S130), cutting the outer tube and the inner tube together at a predetermined location (S230), fusing one end of a remaining tube roll (S631), inserting a packaging object into the cut inner tube (S330), partially fusing the other ends of the outer tube and the inner tube (S632a), injecting air between the outer tube and the inner tube (S430), sucking and removing air from the internal space of the inner tube (S530), and completely fusing the other ends of the outer tube and the inner tube (S632b).

The manufacturing method according to the present embodiment comprises a cutting step (S230), a fusion step of the remaining tube roll (S631), an introduction step (S330), a partial fusion step of the other end (S632a), an air injection step (S430), an air suction step (S530), and a complete fusion step of the other end (S632b), which constitute unit processes and can be performed as a continuous process in which these are repeated.

Referring further to FIG. 20, the manufacturing device (903) of a packaging article according to the present embodiment is different from the manufacturing device of a packaging article according to the above-described embodiment in that the fusing performing units (950) include a first fusing performing unit (951) and a second fusing performing unit (952), wherein the first fusing performing unit (951) is positioned upstream of the process compared to the cutter performing unit (920) or is implemented as an integral part of the cutter performing unit (920), and the second fusing performing unit (952) is positioned downstream of the process compared to the cutter performing unit (920).

Referring further to FIG. 21, in the step (S130) of preparing the outer tube (100t) and the inner tube (200t), the inner tube (200t) may be placed inside the outer tube (100t). In an exemplary embodiment, the longitudinal ends (10a) of the outer tube (100t) and the inner tube (200t) may already be fused and sealed or closed. The tube roll (T) including the outer tube (100t) and the inner tube (200t) may be unwound from the unwinding roll unit (910), pass through the transfer roll unit (915), and then unwound to the vicinity of the second fusion performing unit (952) and the air injection unit (940).

Referring further to FIG. 22, the inner tube (200t) and the outer tube (100t) are cut at any lengthwise position (S230). As the cutter unit (920) cuts any lengthwise position of the tubes, the cut tubes (100t, 200t) may have an open end (10b). As described above, one end (10a) of the tubes (100t, 200t) is already fused in the preparation step (S130).

The portion cut by the cutter section (920) and used in the manufacture of the packaging target article in the unit process is referred to as the first outer tube (100t) and the first inner tube (200t), and the remaining tube roll (T) is referred to as the second outer tube and the second inner tube.

Referring further to FIG. 23, the second outer tube of the remaining tube roll and one end (10a') of the second inner tube can be fused (S631). That is, one end (10a') of the remaining tube roll (T) cut in the cutting step (S230) is in an open state, and the opening of the remaining tube roll (T) can be sealed by fusion in this step (S631). The fusion of the second outer tube and one end of the second inner tube can be performed using the first fusion performing unit (951).

In some embodiments, the cutting step (S230) and the one-end fusing step (S631) of the second tubes may be performed sequentially, in reverse order, or at least partially simultaneously. That is, the one-end fusing of the remaining tube rolls (second tubes) may be performed after the cutting, or the fusing may be performed simultaneously with the cutting. And the cutting step (S230) described above may be performed continuously using the remaining tube rolls (T) having the one-end fusing, i.e., the second outer tube and the second inner tube.

Referring further to FIG. 24, the packaging target item (400) is introduced through the other end opening (200p) of the cut tubes, i.e., the first inner tube (200t) (S330). The introduction of the packaging target item (400) may be performed at a position following the cutter section (920), but the present invention is not limited thereto. In another embodiment, the introduction step (S330) may be performed on a separate process table.

Referring further to FIG. 25, air is injected into the space between the first outer tube (100t) and the first inner tube (200t) (S430), air is sucked out from the internal space of the first inner tube (200t) (S530), and the other ends of the first outer tube (100t) and the first inner tube (200t) can be fused (S632a, S632b). The fusion of the other ends can use the second fusion performing unit (952), but the present invention is not limited thereto. Since the present steps (S632a, S430, S530, S632b) have been described in detail together with FIG. 18, a redundant description will be omitted.

Through the above-described process, the packaging target product shown in Fig. 2 can be prepared or manufactured.

Fig. 26 is a flowchart showing a method for manufacturing a packaging article according to another embodiment of the present invention. Figs. 27 to 31 are drawings showing a method for manufacturing a packaging article according to the embodiment of Fig. 26.

Referring to FIG. 26, a method for manufacturing a packaging article according to the present embodiment may include preparing an outer tube and an inner tube (S140), fusing the outer tube and the inner tube at a first position other than an end (S640), cutting the outer tube and the inner tube together at the first position (S241), cutting the outer tube and the inner tube together at a second position different from the first position (S242), introducing a first packaging target article from one end of the first inner tube (S341), introducing a second packaging target article from the other end of the second inner tube (S342), partially fusing, injecting air, suctioning, and completely fusing the first outer tube and one end of the first inner tube (S441, S541), and partially fusing, injecting air, suctioning, and completely fusing the second outer tube and one end of the second inner tube (S442, S542).

The manufacturing method according to the present embodiment comprises a first position fusing step (S640), a first position cutting step (S241), a second position cutting step (S242), a first packaging target article introducing step (S341), a second packaging target article introducing step (S342), air injection, suction and fusing steps of the first tubes (S441, S541), and air injection, suction and fusing steps of the second tubes (S442, S542) forming unit processes, and these can be performed as a continuous process in which they are repeated.

Referring further to FIG. 27, in the step (S140) of preparing the outer tube (100t) and the inner tube (200t), the inner tube (200t) may be placed inside the outer tube (100t). In an exemplary embodiment, one end (10a) of the longitudinal direction of the outer tube (100t) and the inner tube (200t) may be open rather than sealed.

In addition, any position in the longitudinal direction of the outer tube (100t) and the inner tube (200t), for example, the first position (P1), can be fused (S640).

Referring further to FIG. 28, the fused first position is cut (S241). As the cutter section cuts the already fused first position, the cut tube (e.g., the first tubes (101t, 201t)) may have a sealed other end (10b). As described above, one end (10a) of the first tubes (101t, 201t) is open. In another embodiment, the cutting step (S241) of the first position may be performed after any step to be described later. For example, it may be performed at the end of the unit process.

Referring further to FIG. 29, the remaining tube rolls after the first tubes (101t, 201t) are cut are cut at any lengthwise position, for example, at the second position (P2) (S242). The cut tubes having the first position as one end (10a') and the second position as the other end (10b') may be referred to as second tubes (102t, 202t). As described above, the one end (10a') of the second tubes (102t, 202t) has one end that has already been fused and sealed in the fusion step (S640). The other end (10b') of the second tubes (102t, 202t) may be open.

Referring further to FIG. 30, a first packaging target item (401) is introduced through an open end opening (201p) of a first inner tube (201t) (S341), and a second packaging target item (402) is introduced through an open end opening (202p) of a second inner tube (202t) (S342).

Referring further to FIG. 31, air may be injected into the space between the first outer tube (101t) and the first inner tube (201t) (S441), air may be sucked out from the inner space of the first inner tube (201t), and one end of the first outer tube (101t) and the first inner tube (201t) may be fused (S641). In addition, air may be injected into the space between the second outer tube (102t) and the second inner tube (202t) (S442), air may be sucked out from the inner space of the second inner tube (202t), and the other end of the second outer tube (102t) and the second inner tube (202t) may be fused (S642).

Through the above-described process, the packaging target product shown in Fig. 2 can be prepared or manufactured.

In the various embodiments described above, for example, in the embodiments of FIGS. 5, 6, 12, 19, and 26, various modified embodiments in which the chronological order may be different have been described. However, in the most preferred embodiment contemplated by the applicant, one (or the other) end of the outer tube and the inner tube may be completely fused and sealed, and the other other (or one) end may be partially sealed, for example, by about 90% or more, or about 95% or more, and air may be injected into the space between the outer tube and the inner tube through an opening in the remaining portion of the other end that is not sealed, and air may be sucked/aspirated within the inner tube simultaneously or sequentially, and after a sufficient degree of injection/aspiration of air is achieved, the remaining portion of the other end that is not sealed may be completely fused and sealed. The injection and aspiration of air may be performed at least partially simultaneously. For example, when using an air pump, air sucked from the inner space of the inner tube can be configured to be directly injected between the outer tube and the inner tube. It goes without saying that the above-described time-series process sequence can be applied to all of the embodiments of FIGS. 5, 6, 12, 19, and 26.

According to the method for manufacturing a packaging article according to the present embodiments, a cushioning packaging article can be manufactured in a relatively simple and continuous process by using a tubular inner tube arranged in a tubular outer tube. In the past, packaging articles for manufacturing packaging articles, such as air packing, were manufactured in a standardized manner, and due to their complex shapes, rather than manufacturing and using them directly at logistics companies, finished products such as air packing were purchased and used for packaging articles. In other words, since air packing is already filled with air, there was a significant problem with its volume.

However, according to this embodiment, a durable cushioning packaging product can be manufactured by simply filling air directly in the process of packaging the product in a logistics company. In addition, since the tube is cut to only the required length or size according to the shape and size of the product to be packaged, which is the subject of logistics, the use of unnecessary plastic can be reduced, and there is an effect of space and cost savings.

Furthermore, since the cushioning packaging article according to the present invention can be delivered as is without additional cushioning materials or paper boxes, the work time required for the packaging process can be shortened and the weight of the logistics to be delivered can also be reduced. In particular, conventional cushioning materials such as paper boxes, air packing, air caps, and adhesive tapes cause environmental pollution such as large amounts of carbon emissions during the manufacturing process, and it has been continuously pointed out that waste mixed with multiple materials is difficult to recycle. As the amount of logistics such as courier delivery has increased rapidly recently, a solution to this problem is urgently needed.

However, the cushioning packaging article according to the present invention is environmentally friendly because it uses minimal resources in accordance with the size and shape of the packaging target article to be delivered. In addition, since it does not cause unnecessary weight and volume increase, it can increase the load that can be delivered at one time. In addition, since adhesive tape can be omitted during the packaging process, the use of different materials can be minimized, which can be advantageous for recycling. For example, the outer film layer can be separated from the inner film layer and recycled in the form of recycled resin pellets, and the inner film layer can be considered to use a biodegradable resin.

In addition, if the outer film layer and the inner film layer are formed of a translucent or opaque material, it can prevent others from recognizing the product. Also, the use of the company logo can have an effect of enhancing the company image. In addition, since the first inner space of the packaged product can be filled with sufficient air, it can have a certain heat preservation and cooling effect in itself. Therefore, it is also a matter to consider for future food material transportation.

In conclusion, the primary purpose is to prevent and protect items from damage that may occur during delivery as much as possible, and in addition, it is a valuable invention that is worthy of anticipation as it is a product of the times that lives up to the century-old expectations and goals of a paradigm shift in the existing packaging industry, such as reducing production and distribution costs, minimizing carbon emissions, and providing diversity in design sense and aesthetic value.

Although the present invention has been described above with reference to embodiments thereof, these are merely examples and do not limit the present invention. Those skilled in the art will appreciate that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the embodiments of the present invention.

Therefore, the scope of the present invention should be understood to include modifications, equivalents, or substitutes of the technical ideas exemplified above. For example, each component specifically shown in the embodiments of the present invention can be implemented by modification. And, the differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

11: Buffer packaging items
100: Outer film layer
110: Upper layer of the outer skin
120: Subcutaneous layer
200: Endothelial film layer
210: Upper layer of the endothelium
220: Subcutaneous layer
310: First fusion section
320: Second fusion section
400: Items to be packaged

Claims (7)

An outer film layer comprising upper and lower layers connected to each other;
An inner film layer disposed between the upper and lower layers of the outer film layer, including an upper layer and a lower layer connected to each other, and interposing an air layer between the outer film layer and the inner film layer; and
Including a packaging target article placed between the upper and lower layers of the above inner film layer,
The first direction one-sided end portions of the outer film layer and the inner film layer together form a first fusion portion, and the first direction other-sided end portions of the outer film layer and the inner film layer together form a second fusion portion.
The first internal space formed by the outer film layer, the inner film layer, the first fusion portion, and the second fusion portion is sealed to form the air layer,
The second internal space formed by the upper and lower layers of the inner film layer, the first fusion portion, and the second fusion portion is sealed and separated from the external space, and the product to be packaged is placed within the second internal space.
In the cross-section cut in the first direction, the upper surface of the lower layer of the inner film layer and the lower surface of the upper layer of the inner film layer are at least partially in contact with each other,
In a cross-section cut in a second direction intersecting with the first direction, the outer film layer and the inner film layer are separated to form the air layer.
The upper and lower layers of the above inner film layer each at least partially overlap with the packaging target article in the first direction,
A cushioning packaging article in which, in a cross-section cut in the first direction, an interface where the lower layer and the upper layer of the inner film layer come into contact overlap with the packaging target article in the first direction. In the first paragraph,
A cushioning packaging article in which, in a cross-section cut in the first direction, the upper layer and the lower layer of the outer film layer, and the upper layer and the lower layer of the inner film layer are connected through a first fusion portion and a second fusion portion. In the first paragraph,
A cushioning packaging article, wherein the outer film layer and the inner film layer are physically separated from each other except for the first fusion portion and the second fusion portion. In the first paragraph,
A cushioning packaging article in which the inner film layer is made of a material that is thinner and has lower rigidity than the outer film layer. delete delete delete