Packaging sealing structure and coffee raw material packaging bag

Abstract

The utility model discloses a package sealing structure and a coffee raw material packaging bag, which comprise an inner film and a paper layer attached outside the inner film, the inner film forms package sealing through adhesion, one side of the inner film corresponding to the interior of the package is connected with a brace, and at least one end of the brace is used for a user to open the inner film and the paper layer in an interactive manner; a plurality of through holes or blind holes are formed in the upper side and the lower side, corresponding to the pulling strip, of the paper layer in the pulling strip uncovering direction so that the pulling strip can be uncovered along the through holes or the blind holes when the paper layer is uncovered. According to the technical scheme, the packaging bag unsealing function can be achieved, meanwhile, fiber damage generated in the paper layer unsealing process is avoided, the visual integrity of the packaging bag is improved, then the decoration / display effect when the packaging bag is idle is maintained, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a packaging structure, concretely is packaging seal structure, coffee raw material packaging bag. BACKGROUND

[0002] The quality of the packaging bag is a key factor for improving user experience, especially in the field of products with repeated sealing function and decoration / display function in idle stage (such as coffee bean and coffee powder packaging bags) - such packaging bags are only opened when raw materials are taken, and are mainly used for display or decoration in the idle stage, and the appearance performance has a significant impact on the use experience.

[0003] In order to further improve the quality of the packaging bag, the paper layer is added in the packaging bag in the prior art; however, this scheme has obvious defects: the paper structure is easy to break in the process of opening the sealing port of the packaging bag, which not only damages the visual integrity of the packaging bag, but also seriously damages the appearance effect when it is used as a display or decoration device. SUMMARY

[0004] In view of the defects in the prior art, the utility model aims to provide a packaging seal structure and a coffee raw material packaging bag, which can realize the opening function of the packaging bag while avoiding fiber breakage of the paper layer during opening, improve the visual integrity of the packaging bag, and maintain the decoration / display effect in the idle stage, thereby improving the user experience.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a packaging seal structure, comprising an inner film and a paper layer attached to the outer surface of the inner film, the inner film is formed by adhesion to form a packaging seal, one side of the inner film corresponding to the inside of the packaging is connected with a pull strip, and at least one end of the pull strip is used for user interaction to open the inner film and the paper layer; the paper layer is provided with a plurality of through holes or blind holes on the upper and lower sides corresponding to the pull strip along the opening direction of the pull strip, so that the pull strip can be opened along the through hole or blind hole when the paper layer is opened.

[0006] As a further improvement of the utility model, the spacing between adjacent through holes or blind holes on the paper layer is 1:1~1:3 compared with the length of the through holes or blind holes.

[0007] As a further improvement of the utility model, the spacing between adjacent through holes or blind holes on the paper layer is 1:2 compared with the length of the through holes or blind holes.

[0008] As a further improvement of the utility model, the spacing between adjacent through holes or blind holes on the paper layer is 0.2~0.8mm, and the length of the through holes or blind holes is 0.5~1.5mm.

[0009] The distance between the adjacent through holes or blind holes on the paper layer is 0.5mm, and the length of the through hole or blind hole is 1mm.

[0010] The distance between the through hole or blind hole and the stay is 0-0.5mm.

[0011] The number of the through hole or blind hole on the upper and lower sides of the stay corresponding to the paper layer is one, and the length thereof corresponds to the length required to be opened by the stay.

[0012] The inner film corresponding to one side of the inside of the package is further provided with a repeated sealing assembly for repeatedly sealing the opening of the inner film, and the repeated sealing assembly is located below the opening formed by the opening of the stay, and the repeated sealing assembly is exposed after the opening of the inner film.

[0013] The inner film corresponding to one side of the inside of the package is further provided with a repeated sealing assembly for repeatedly sealing the opening of the inner film, and the repeated sealing assembly is located below the opening formed by the opening of the stay, and the repeated sealing assembly is exposed after the opening of the inner film.

[0014] The through hole / blind hole provided on the paper layer along the opening direction of the stay can form a preset opening path, so that the paper layer is disconnected along the stress concentration area of the through hole / blind hole under the action of the pulling force of the stay, the edge of the paper layer is neat after being opened, and the visual integrity of the packaging bag is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an external structure of the utility model three-dimensional schematic view;

[0016] Figure 2 It is an external structure of the utility model main view schematic view;

[0017] Figure 3 It is Figure 1 The enlarged view of A part in

[0018] Figure 4 It is Figure 2 The enlarged view of B part in

[0019] Figure 5 It is a part of the utility model sectional structure schematic view.

[0020] Corresponding label: 1, inner film;2, paper layer;3, stay;4, blind hole;5, repeated sealing assembly. DETAILED DESCRIPTION

[0021] The utility model will be made further detailed below with the embodiments shown in the drawings.

[0022] Referring to Figures 1-5 The packaging sealing structure of the embodiment includes an inner film 1, a paper layer 2 attached to the outer side of the inner film 1, and a pull tab 3 connected to the side of the inner film 1 corresponding to the inside of the package. The pull tab 3 is used for the user to interactively tear open the inner film 1 and the paper layer 2. The paper layer 2 has a plurality of through holes or blind holes 4 arranged on the upper and lower sides of the pull tab 3 along the tearing direction of the pull tab 3, so that the pull tab 3 can tear open the paper layer 2 along the through holes or blind holes 4.

[0023] The inner film 1 (which can be made of food-grade polyethylene (PE)) is tightly attached to the paper layer 2 by an adhesive. The inner film 1 is circumferentially bonded to form a closed packaging space, ensuring the initial sealing of the internal contents (such as coffee raw materials) and preventing moisture and oxidation. The pull tab 3 is fixed to the side of the inner film 1 corresponding to the inside of the package by a hot pressing process. At least one end of the pull tab 3 extends to the outside of the opening edge of the package, forming an interactive end for the user to grab, making it easy for the user to apply force. The through holes or blind holes 4 on the paper layer 2 are processed by punching or laser drilling, and their arrangement direction corresponds to the preset tearing direction of the pull tab 3. When the user grabs the interactive end of the pull tab 3 and applies force in the tearing direction, the pulling force is transmitted to the inner film 1 through the pull tab 3, and the inner film 1 drives the attached paper layer 2 to bear force synchronously. At this time, due to the presence of the through holes or blind holes 4, the stress is concentrated on the edge area of the through holes or blind holes 4, causing the paper layer 2 to break neatly along the path formed by the through holes or blind holes 4, avoiding irregular damage to the fibers of the paper layer 2 due to the absence of a preset breaking path, ensuring the visual integrity of the paper layer 2 after it is torn open, and thus maintaining the decoration / display function of the package when it is idle. At the same time, the pull tab 3 separates the inner film 1 from the bonded sealing, forming an opening for the user to access the contents and achieving convenient opening.

[0024] As an optional solution, the spacing between adjacent through holes or blind holes 4 on the paper layer 2 is 1:1~1:3 (see D:W in Figure 4 ). D is the spacing between adjacent through holes or blind holes 4, and W is the length of the through holes or blind holes 4.

[0025] The ratio of the interval between adjacent through holes or blind holes 4 on the paper layer 2 to the length of the through holes or blind holes 4 is controlled in the range of 1:1 to 1:3, and the ratio is designed to be adapted to the material properties (such as fiber density, tensile strength) of the paper layer 2: when the paper layer 2 is selected to have a higher tensile strength (such as kraft paper), a ratio of 1:3 (i.e. the length is 3 times the interval, i.e. W is 3 times D) is used to increase the distribution density of the through holes or blind holes 4, so that the paper layer 2 is more likely to break along the preset path under the action of tension, avoiding incomplete breaking or fiber damage due to too thick material and too high strength; when the paper layer 2 is selected to have a lower tensile strength (such as 80g / m2 copper paper), a ratio of 1:1 (i.e. the interval is the same as the length, i.e. D is the same as W) is used to reduce the distribution density of the through holes or blind holes 4, avoiding natural breaking of the paper layer 2 during idle or transportation due to too high density, while still achieving directional breaking effect under the action of tension. The ratio range can cover most material specifications of the paper layer 2 for food packaging, ensuring that the paper layer 2 of different materials can achieve neat breaking during opening, without affecting the structural stability of the paper layer 2 (not easy to deform or damage when idle), and also ensuring smoothness of the opening operation, avoiding damage or difficulty in opening the paper layer 2 due to improper ratio, and improving the universality and reliability of the packaging structure.

[0026] Preferably, the ratio of the interval between adjacent through holes or blind holes 4 on the paper layer 2 to the length of the through holes or blind holes 4 is 1:2. This ratio can be used as a compromise, which can be adapted to more paper materials and is more versatile. This scheme is equivalent to the position broken by the through holes or blind holes 4 being twice the position not broken, facilitating directional breaking of the paper layer 2 without bringing out fibers.

[0027] Preferably, the interval (D) between adjacent through holes or blind holes 4 on the paper layer 2 is 0.2-0.8mm, and the length (W) of the through holes or blind holes 4 is 0.5-1.5mm.

[0028] The size range is based on the aforementioned 1:1~1:3 ratio design. When the ratio is 1:1, the pitch and length can be synchronized to 0.5 mm (pitch 0.5 mm, length 0.5 mm), which is suitable for 80 g / m2 copper paper, and the connection between the holes is strong enough to avoid natural breakage. When the ratio is 1:3, a pitch of 0.5 mm and a length of 1.5 mm can be used, which is suitable for 120 g / m2 kraft paper, and the hole coverage is wider and the breakage is smoother. The design of pitch 0.2~0.8 mm: the minimum pitch of 0.2 mm can adapt to small size packaging (such as 100 g coffee powder bag, opening length 5 cm), and reduce the number of holes (only about 100 holes are needed); the maximum pitch of 0.8 mm can adapt to large size packaging (such as 500 g coffee bean bag, opening length 10 cm). The design of length 0.5~1.5 mm: the shortest length of 0.5 mm can avoid insufficient stress concentration caused by too small holes, and the longest length of 1.5 mm can avoid appearance defects of paper layer 2 caused by too large holes (too large holes are easy to show roughness, and 1.5 mm length still maintains the delicate feeling in vision). The size range can be realized by conventional stamping equipment or laser drilling equipment, and is suitable for most coffee raw material packaging bags (100~500 g), which improves the product applicability.

[0029] In a more general optional design, the pitch between adjacent through holes or blind holes 4 on the paper layer 2 is 0.5 mm, and the length of the through holes or blind holes 4 is 1 mm. This ratio is more general. Taking a 200~300 g mainstream coffee packaging bag (opening length 8 cm) as an example, the number of holes under this size is about 160 (8 cm / 0.5 mm=160), forming a continuous "break line". When the pull strip 3 is pulled, the paper layer 2 breaks along the "break line" at one time. At the same time, this size will not form obvious protrusions or depressions on the surface of the paper layer 2, maintaining the flat appearance of the paper layer 2.

[0030] In addition, in order to better uncover the paper layer 2 by the pull strip 3, the pitch (H) between the through holes or blind holes 4 and the pull strip 3 is 0~1 mm, and H is the pitch between the pull strip 3 and the through holes or blind holes 4. This pitch design is used to adapt to the installation error of the pull strip 3, and to ensure that the pulling force is accurately transmitted to the hole area. With a 0 mm pitch (the hole is directly adjacent to the edge of the pull strip 3), when the pull strip 3 pulls the inner film 1, the pulling force of the inner film 1 can directly act on the hole edge, and the paper layer 2 breaks accurately along the edge of the pull strip 3, avoiding irregular opening edges; when there is a slight offset during installation and still within 1 mm pitch, the hole can still cover the action area of the pulling force of the pull strip 3, ensuring that the paper layer 2 breaks along the preset direction, and the hole and the pulling force action area will not be misaligned due to the offset of the pull strip 3, thereby causing damage to the non-pre-set area of the paper layer 2.

[0031] The above schemes are implemented by forming point-break-line through multiple holes and blind holes 4, and the difference from the previous schemes is that the following scheme can also be formed: the number of through holes or blind holes 4 corresponding to the upper and lower sides of the pull strip 3 of the paper layer 2 is one, and the length thereof corresponds to the required opening length of the pull strip 3.

[0032] One through hole or blind hole 4 is arranged on each of the upper and lower sides of the paper layer 2, and the length of the hole is basically the same as the preset opening length of the pull strip 3, which is more optimal in production and opening effect, and can further reduce the problem of paper fiber damage caused by improper selection of break point spacing.

[0033] In order to allow the package to be reused, in an optional scheme, the inner film 1 corresponding to one side of the inside of the package is further provided with a repeated sealing assembly 5 for repeatedly sealing the opening of the inner film 1, and the repeated sealing assembly 5 is located below the opening formed by the pull strip 3, and is exposed after the opening of the inner film 1 is formed by the pull strip 3. The repeated sealing assembly 5 adopts a food-grade zipper structure (composed of a male toothed strip and a female toothed groove, made of polyethylene, meeting the food contact standard), which is fixed on the inner side of the inner film 1 by a hot pressing process, and the fixed position is located directly below the opening formed after the pull strip 3 is opened (to avoid damaging the zipper when opening).

[0034] The above scheme introduces a packaging sealing structure, which can be mainly applied in coffee raw material packaging bags, and constitutes the following technical scheme: a coffee raw material packaging bag, comprising the packaging sealing structure of any one of the above optional schemes. The coffee raw material packaging bag is an important application scenario that needs to be reused and idly displayed, and the above packaging sealing structure is particularly suitable.

[0035] The above only describes preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the scope of the present application is within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A packaging sealing structure, comprising an inner film and a paper layer attached to the outer surface of the inner film, wherein the inner film is bonded to form a packaging seal, characterized in that: The inner film is connected to a pull strip on one side corresponding to the inside of the package, and at least one end of the pull strip is used for users to interactively peel off the inner film and the paper layer; the paper layer is provided with a plurality of through holes or blind holes along the peeling direction of the pull strip on the upper and lower sides corresponding to the pull strip, so that the paper layer can be peeled off along the through holes or blind holes when the pull strip is peeled off.

2. The packaging sealing structure according to claim 1, characterized in that: The ratio of the spacing between adjacent through holes or blind holes on the paper layer to the length of the through holes or blind holes is 1:1 to 1:

3.

3. The packaging sealing structure according to claim 1, characterized in that: The ratio of the spacing between adjacent through holes or blind holes on the paper layer to the length of the through holes or blind holes is 1:

2.

4. The packaging sealing structure according to claim 2, characterized in that: The spacing between adjacent through holes or blind holes on the paper layer is 0.2-0.8 mm, and the length of the through holes or blind holes is 0.5-1.5 mm.

5. The packaging sealing structure according to claim 4, characterized in that: The spacing between adjacent through holes or blind holes on the paper layer is 0.5 mm, and the length of the through holes or blind holes is 1 mm.

6. The packaging sealing structure according to any one of claims 1 to 5, characterized in that: The distance between the through hole or the blind hole and the pull bar is 0-0.5 mm.

7. The packaging sealing structure according to claim 1, characterized in that: The number of through holes or blind holes on the upper and lower sides of the paper layer corresponding to the pull strip is one, and the length of the through holes or blind holes corresponds to the length required to be uncovered of the pull strip.

8. The packaging sealing structure according to claim 6, characterized in that: The inner film is also provided with a re-sealing component on one side corresponding to the interior of the package, which is used to re-seal the opening of the inner film, and the re-sealing component is located below the opening formed by the pull strip. After the pull strip is opened, the inner film forms an opening for the re-sealing component to be exposed.

9. The packaging sealing structure according to claim 7, characterized in that: The inner film is also provided with a re-sealing component on one side corresponding to the interior of the package, which is used to re-seal the opening of the inner film, and the re-sealing component is located below the opening formed by the pull strip. After the pull strip is opened, the inner film forms an opening for the re-sealing component to be exposed.

10. A coffee raw material packaging bag, characterized in that: Comprising the packaging sealing structure according to any one of claims 1 to 9.

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