Eight-edge sealing bag
By using eight-sided sealing bags made of kraft paper and water-based heat sealing adhesive layer, the problem of insufficient strength of existing paper packaging bags is solved, and the packaging effect of high strength, three-dimensional structure and easy-to-form is achieved, which can replace plastic packaging bags.
Patent Information
- Application Number
- CN202421073816.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing paper eight-sided sealing bags have low strength and insufficient support after packaging, making it difficult to form a three-dimensional packaging structure and cannot replace plastic packaging bags.
The eight-sided sealing bag made of kraft paper is heat-sealed by a water-based heat sealing layer to form a packaging bag with high strength and three-dimensional structure.
Kraft paper bags have high strength and tensile properties, can form a large three-dimensional packaging space, is not easy to break, is easy to form, and can replace traditional plastic packaging bags.
Smart Images
Figure CN222453067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of packaging bags, in particular to an eight-side sealed bag. Background Art
[0002] At present, most of the known product packaging bags are made of plastic materials such as PP, PET, and PVC, which are non-degradable and difficult to recycle, and are prone to cause white pollution to the environment and do not meet environmental protection requirements. There are also some paper packaging bags, such as fast food bags for fast food products (KFC, McDonald's), garbage collection bags on high-speed trains, etc., but these paper bags can only temporarily store objects, and their application scenarios are limited. They cannot replace plastic packaging bags as product packaging bags.
[0003] The existing paper eight-side sealed bags have low strength, and the overall support of the packaging bags is insufficient after packaging, making it difficult to form a three-dimensional packaging structure, which affects the packaging space and cannot meet the use needs. Summary of the invention
[0004] The main technical problem solved by the utility model is to provide an eight-side sealed bag, which is made of kraft paper. The kraft paper has high strength, can be folded to form a larger three-dimensional packaging space, is not easy to be damaged, is easy to form, and can replace traditional plastic packaging bags.
[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: proposing an eight-side sealed bag, including kraft paper coated with a water-based heat-sealing adhesive layer on at least one side, the kraft paper including an integrally formed front side, back side, left side, right side and bottom side, the front side, back side, left side and right side are coaxially arranged, the bottom side is connected to the bottom of the back side, the front side, left side and right side are folded relative to the back side and heat-sealed to the bottom side, the front side, back side, left side and right side are heat-sealed to each other, and the upper ends of the front side and the back side are folded inwards and then heat-sealed to each other.
[0006] In a preferred embodiment of the present invention, the ends of the heat-sealed edges between the front side, the back side, the left side, the right side and the bottom side have folded openings.
[0007] In a preferred embodiment of the present invention, the folding opening is a triangular notch.
[0008] In a preferred embodiment of the present invention, the width of the heat-sealed edge is 1 cm.
[0009] The beneficial effects of the utility model are as follows: the octagonal sealed bag of the utility model utilizes kraft paper and a water-based heat-sealing adhesive layer as packaging paper, which is convenient for heat-sealing molding; the kraft paper has good strength and shape, and can form a larger three-dimensional packaging space.
[0010] The eight-side sealed bag of the utility model is effectively supported by the kraft paper, and the kraft paper has certain tensile properties, so some large-volume packages can be effectively wrapped, thereby improving the utilization rate of the packaging space and being not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:
[0012] Figure 1 It is a schematic diagram of the unfolded structure of the eight-side sealed bag of the utility model;
[0013] Figure 2 It is a three-dimensional structural diagram of an eight-side sealed bag;
[0014] The markings of the components in the accompanying drawings are as follows: 1. front side, 2. back side, 3. left side, 4. right side, 5. bottom side, 6. heat-sealed edge. DETAILED DESCRIPTION
[0015] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope of the technical content disclosed in the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of its relative relationship, without substantially changing the technical content, should also be regarded as the scope that can be implemented in the utility model.
[0016] See also Figure 1 , an eight-side sealed bag, comprising kraft paper coated with a water-based heat-sealing adhesive layer on at least one side. Paper 2 is the outer layer, and the water-based heat-sealing adhesive layer is the inner layer. The water-based heat-sealing adhesive has a solid content of 42%, a pH value of 7.5, a viscosity (25°C) of 150mPa·s, and a particle size of 0.7u. The quantitative amount of the water-based heat-sealing adhesive is 3-8g / m 2, the coating speed is 80-150m / min, the dried wrapping paper is 77.7gsm, the moisture content is 6.39%, the thickness is 75μm, and the thickness of the water-based coating is 0.03-0.08mm. The water-based heat-sealing adhesive is coated on the kraft paper to form the wrapping paper. The wrapping paper has good physical properties and can be folded to form a three-dimensional structure similar to plastic, achieving the effect of a three-dimensional packaging bag, and can accommodate more packaging in the packaging bag. Therefore, based on the same amount of paper, the packaging bag of the present application can obtain a larger packaging space.
[0017] like Figure 2 As shown, the kraft paper includes an integrally formed front side 1, a back side 2, a left side 3, a right side 4 and a bottom side 5. The front side 1, the back side 2, the left side 3 and the right side 4 are coaxially arranged, and the bottom side is connected to the bottom of the back side. The front side 1, the left side 3 and the right side 4 are folded relative to the back side 2 and heat-sealed to the bottom side 5, and the front side 1, the back side 2, the left side 3 and the right side 4 are heat-sealed to each other, and the upper ends of the front side 1 and the back side 2 are folded inward and heat-sealed to each other. The ends of the heat-sealed edges between the front side 1, the back side 2, the left side 3, the right side 4 and the bottom side 5 have a folding opening, and the width of the heat-sealed edge is 1 cm. The folding opening is a triangular notch. After the front side 1, the back side 2, the left side 3 and the right side 4 are folded and heat-sealed to form a packaging paper bag, the front side 1 and the back side 2 are folded relative to each other to complete the heat sealing, forming a complete paper packaging bag. The heat sealing pressure is 0.25-0.4Mpa, and the preferred heat sealing pressure is 0.3Mpa. The heat sealing time is 0.15-0.25S, and the preferred heat sealing time is 0.2S. The heat sealing temperature is 100-125°C, and the preferred heat sealing temperature is 110°C.
[0018] Different from the prior art, the eight-side sealed bag of the utility model is made of kraft paper, which has high strength, can be folded to form a larger three-dimensional packaging space, is not easy to be damaged, is easy to form, and can replace traditional plastic packaging bags.
[0019] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.
Claims
1. An eight-side sealed bag, characterized in that: The invention relates to kraft paper with at least one side coated with a water-based heat-sealing adhesive layer, wherein the kraft paper comprises an integrally formed front side, a back side, a left side, a right side and a bottom side, wherein the front side, the back side, the left side and the right side are coaxially arranged, the bottom side is connected to the lower side of the back side, the front side, the left side and the right side are folded relative to the back side and heat-sealed to the bottom side, the front side, the back side, the left side and the right side are heat-sealed to each other, and the upper ends of the front side and the back side are folded inwards and heat-sealed to each other.
2. The eight-side sealed bag according to claim 1, characterized in that: The ends of the heat-sealed edges between the front side, the back side, the left side, the right side and the bottom side are provided with folded openings.
3. The eight-side sealed bag according to claim 2, characterized in that: The folding opening is a triangular notch.