Coffee bean packaging bag
By using a composite film structure packaging bag composed of polyethylene, pure aluminum and polyethylene terephthalate layers, combined with dot matrix heat sealing technology, the problem that existing packaging materials cannot effectively prevent coffee beans from oxidation, moisture and ultraviolet irradiation, achieving higher aroma retention and quality stability.
Patent Information
- Application Number
- CN202421043913.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-14
AI Technical Summary
Existing coffee bean packaging materials are difficult to effectively prevent aroma loss and quality decline caused by oxidation, moisture and ultraviolet rays.
A composite film structure packaging bag composed of polyethylene, pure aluminum and polyethylene terephthalate layers is used, combined with dot matrix heat sealing technology to form a packaging with high sealing and strong barrier properties.
Effectively maintain storage humidity, shield UV rays, prevent oxidation, significantly extend the shelf life of coffee beans, and maintain a primitive flavor closer to the early stages of roasting.
Smart Images
Figure CN222611811U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packaging, in particular to a coffee bean packaging bag. Background Art
[0002] As people's living standards continue to improve, coffee has become a daily drink, and more and more people like to buy coffee beans, take them home, grind them themselves, and make freshly ground coffee to improve the taste of the coffee.
[0003] Roasted coffee beans are the core raw material of coffee drinks, and their unique aroma and flavor are crucial to consumers' drinking experience. However, the existing packaging methods on the market often fail to effectively prevent the rapid loss of aroma of coffee beans due to oxidation and moisture during storage.
[0004] At present, most of the roasted coffee bean packaging on the market is made of a single material or simple composite materials, which has the following problems:
[0005] The packaging material has limited ability to block humidity, especially in a humid environment. Moisture may penetrate into the packaging, causing the coffee beans to absorb moisture and become damp, accelerating aroma loss and the risk of mold.
[0006] Transparent or translucent packaging materials can easily expose coffee beans to light, and ultraviolet rays can cause the degradation of chemical components in the coffee beans and destroy the original flavor.
[0007] Multiple opening and sealing operations result in frequent exchange of gases between the inside of the package and the external environment, accelerating the oxidation process and increasing the risk of microbial contamination. Utility Model Content
[0008] In order to solve the above technical problems, the utility model proposes a coffee bean packaging bag, which can maintain appropriate storage humidity, shield the influence of ultraviolet rays on coffee beans, and avoid aroma loss and quality degradation caused by repeated opening.
[0009] An embodiment of the utility model provides a coffee bean packaging bag, which comprises a polyethylene layer, a pure aluminum layer and a polyethylene terephthalate layer from the inside to the outside, the polyethylene layer, the pure aluminum layer and the polyethylene terephthalate layer are a composite film structure, the packaging bag is rectangular in shape, an upper seal is arranged at the top of the packaging bag, a lower seal is arranged at the bottom of the packaging bag, a vertical seal is arranged on one side of the packaging bag connecting the top and the bottom, the width of the upper seal is 10 mm to 30 mm, the width of the lower seal is 10 mm to 30 mm, the bag body length of the packaging bag is 140 mm to 170 mm, the width of the packaging bag is 40 mm to 60 mm, the upper seal, the lower seal and the vertical seal are all dot matrix seals, the dot matrix seal is provided with densely and evenly distributed heat sealing points, and the distance between adjacent heat sealing points is 0.5 mm to 1.5 mm.
[0010] Furthermore, the width of the upper seal is 20 mm, the width of the lower seal is 20 mm, the length of the bag body of the packaging bag is 155 mm, and the width of the packaging bag is 50 mm.
[0011] Furthermore, the heat sealing points on the dot matrix seal are arranged in alternate rows.
[0012] Furthermore, the distance between adjacent heat-sealing points on the dot-matrix seal is 1 mm.
[0013] Furthermore, a triangular notch is provided at the edge of the upper seal and / or the lower seal.
[0014] The above technical solution has the following advantages:
[0015] 1. The packaging bag uses a three-layer composite structure of polyethylene layer, pure aluminum layer and polyethylene terephthalate layer as the packaging material. The polyethylene layer provides good heat sealing and flexibility, ensuring the sealing performance and mechanical strength of the packaging bag. The pure aluminum layer, as the middle layer, has extremely high barrier properties and effectively blocks the penetration of oxygen, water vapor and ultraviolet rays, creating an ideal storage environment for coffee beans that is almost oxygen-free, dry and light-proof. The polyethylene terephthalate layer provides additional mechanical strength and heat resistance, enhancing the overall stability and puncture resistance of the packaging.
[0016] 2. The advanced dot matrix thermoplastic packaging technology is used at the sealing of the packaging bag. Through precise heat sealing treatment of the packaging seal, dense and evenly distributed heat sealing points are formed to ensure the absolute sealing of the packaging bag. This packaging method can eliminate the tiny leaks that may be caused by traditional heat sealing processes, and further prevent external oxygen from invading and internal aroma from escaping.
[0017] 3. The packaging bag is designed as a disposable independent packaging bag that is easy to tear open. Each bag is filled with an appropriate amount of roasted coffee beans to meet the needs of one brewing. Consumers can directly use a single independent packaging bag without opening the large package, avoiding the aroma loss, humidity changes and external contamination risks caused by repeated opening and closing of large packages.
[0018] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and other purposes, features and advantages of the present invention will become more apparent by describing the embodiments of the present invention in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings, the same reference numerals generally represent the same components or steps.
[0020] Figure 1 It is an external schematic diagram of a coffee bean packaging bag in an embodiment of the utility model.
[0021] Figure 2 It is a schematic diagram of the internal structure of the coffee bean packaging bag in the embodiment of the utility model.
[0022] Figure 3 It is a schematic diagram of the sealing structure of the coffee bean packaging bag in the embodiment of the utility model. DETAILED DESCRIPTION
[0023] Below, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described here.
[0024] It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0025] Those skilled in the art can understand that the terms "first" and "second" in the embodiments of the present invention are only used to distinguish different steps, devices or modules, etc., and neither represent any specific technical meaning nor indicate the necessary logical order between them.
[0026] It should also be understood that in the embodiments of the present invention, “plurality” may refer to two or more than two, and “at least one” may refer to one, two or more than two.
[0027] It should also be understood that any component, data or structure mentioned in the embodiments of the present invention can generally be understood as one or more, unless explicitly limited or otherwise indicated in the context.
[0028] Figure 1 It is an external schematic diagram of a coffee bean packaging bag in an embodiment of the utility model. Figure 2 Schematic diagram of the internal structure of the coffee bean packaging bag in the embodiment of the utility model. Figure 1 and Figure 2 As shown, the coffee bean packaging bag comprises a polyethylene layer 1, a pure aluminum layer 2 and a polyethylene terephthalate layer 3 from the inside to the outside, and the polyethylene layer, the pure aluminum layer and the polyethylene terephthalate layer are a composite film structure.
[0029] Among them, polyethylene (PE) has a molecular formula of C2H4 and is a thermoplastic resin. Polyethylene resin is a non-toxic, odorless white powder or granule with a milky white appearance and a waxy feel. It has a low water absorption rate of less than 0.01%. Polyethylene film is transparent and decreases with the increase of crystallinity. Polyethylene film has a low water permeability but a large air permeability. It is not suitable for fresh-keeping packaging but suitable for moisture-proof packaging. Polyethylene has good chemical stability and can withstand dilute nitric acid, dilute sulfuric acid and any concentration of hydrochloric acid, hydrofluoric acid, phosphoric acid, formic acid, ammonia, amines, hydrogen peroxide, sodium hydroxide, potassium hydroxide and other solutions at room temperature. Because LDPE and HDPE have good fluidity, low processing temperature, moderate viscosity, low decomposition temperature, and do not decompose at a high temperature of 300°C in an inert gas, it is a plastic with good processing performance.
[0030] Pure aluminum AL is a silvery white light metal. It is ductile. The product is usually made into columns, rods, sheets, foils, powders, strips and wires. The melting point is 660℃, the boiling point is 2327℃. The relative density is 2.70, and the density of aluminum liquid is 2.303g / cm 3 . Elastic modulus 70Gpa, Poisson's ratio 0.33. Aluminum has good ductility (its ductility is second only to gold and silver), and can be made into aluminum foil thinner than 0.01mm at 100℃~150℃. These aluminum foils are widely used to package cigarettes, candies, etc. Aluminum sheets also have good light reflection properties, and reflect ultraviolet rays more strongly than silver. The purer the aluminum, the better its reflection ability.
[0031] Polyethylene terephthalate (PET), with the chemical formula (C10H8O4)n, is obtained by ester exchange of dimethyl terephthalate with ethylene glycol or esterification of terephthalic acid with ethylene glycol to synthesize dihydroxyethyl terephthalate, and then polycondensation reaction. It is the most important variety of thermoplastic polyester, commonly known as polyester resin. It has good mechanical properties, impact strength is 3 to 5 times that of other films, and good folding resistance; it is resistant to oil, fat, dilute acid, dilute alkali, and most solvents; it has low gas and water vapor permeability, and has excellent gas, water, oil and odor resistance; it has high transparency, can block ultraviolet rays, and has good gloss; it is non-toxic, tasteless, hygienic and safe, and can be directly used for food packaging.
[0032] PE / AL / PET composite structural materials are resistant to cold brittleness below 0°C, which can prevent the possibility of the packaging bag being damaged under sealed conditions below 0°C. The environment below 0°C can slow down the oxidation rate of food.
[0033] The packaging bag is rectangular in shape, an upper seal 5 is arranged at the top of the packaging bag, a lower seal 6 is arranged at the bottom of the packaging bag, and a vertical seal 7 is arranged on one side of the packaging bag connecting the top and the bottom.
[0034] The width of the upper seal can be 10 mm to 30 mm, 20 mm is used in this embodiment, the width of the lower seal can also be 10 mm to 30 mm, 20 mm is used in this embodiment, the bag body length of the packaging bag is 140 mm to 170 mm, 155 mm is used in this embodiment, the width of the packaging bag is 40 mm to 60 mm, 50 mm is used in this embodiment.
[0035] A triangular notch is provided at the edge of the upper seal and the lower seal, or a triangular notch can be provided at the edge of the upper seal or the lower seal. The triangular notch is used to tear open the packaging bag. In this embodiment, a triangular notch 8 is provided at the edge of the upper seal.
[0036] Figure 3 Schematic diagram of the sealing structure of the coffee bean packaging bag in the embodiment of the utility model. Figure 3 As shown, the upper seal, the lower seal and the vertical seal are all dot-matrix seals, and the dot-matrix seals are provided with densely and evenly distributed heat-sealing points 9, and the heat-sealing points on the dot-matrix seals are arranged alternately. The distance between adjacent heat-sealing points is 0.5 mm to 1.5 mm, and this embodiment adopts 1 mm.
[0037] The above embodiment is adopted, and the high barrier performance provided by the PE / AL / PET three-layer composite soft film makes the packaging bag's barrier rate to external light, moisture and odor reach more than 99%. The measured data shows that after one year of storage, the retention rate of key aroma components (such as volatile aromatic hydrocarbons, ester compounds, etc.) of coffee beans packaged in the packaging bag of this embodiment is increased by about 30% compared with ordinary packaging, ensuring that consumers can experience the original flavor closer to the initial stage of roasting when opening the bag.
[0038] Since oxidation and moisture are effectively controlled, the shelf life of roasted coffee beans packaged in the packaging bag of this embodiment is significantly extended under the recommended storage conditions (avoiding light, keeping in a cool and dry place). Comparative tests show that compared with traditional packaging, the sensory evaluation scores (including aroma, taste, freshness, etc.) of coffee beans packaged in the packaging bag of this embodiment can still be maintained at an excellent level after 18 months of storage under the same conditions, while the scores of the control group have dropped significantly.
[0039] The independent one-time packaging design not only avoids the loss of aroma caused by repeated opening of large packages, but also improves the convenience of use for consumers, eliminating the need to purchase additional sealed containers and reducing waste. In addition, the small packaging format allows merchants to flexibly set prices to meet the needs of different consumer groups, which helps to increase sales conversion rates.
[0040] The basic principle of the technical solution is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the technical solution are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. must be possessed by each embodiment of the technical solution. In addition, the specific details of the above technical solution are only for the purpose of illustration and facilitation of understanding, rather than limitation, and the above details do not limit the technical solution to the need to adopt the above specific details to be implemented.
[0041] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.
[0042] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present technical solution are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.
[0043] The method and apparatus of the present technical solution may be implemented in many ways. For example, the method and apparatus of the present technical solution may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present technical solution are not limited to the order specifically described above, unless otherwise specifically stated. In addition, in some embodiments, the present technical solution may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present technical solution. Therefore, the present technical solution also covers a recording medium storing a program for executing the method according to the present technical solution.
[0044] It should also be noted that, in the apparatus, equipment and method of the present technical solution, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present technical solution. The above description of the aspects of the technical solution is provided to enable any technician in the field to make or use the present technical solution. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present technical solution. Therefore, the present technical solution is not intended to be limited to the aspects shown here, but in accordance with the widest range consistent with the principles and novel features of this technical solution.
[0045] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present technical solution to the form of the technical solution herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.
Claims
1. A coffee bean packaging bag, characterized in that: The packaging bag comprises a polyethylene layer, a pure aluminum layer and a polyethylene terephthalate layer from the inside to the outside, the polyethylene layer, the pure aluminum layer and the polyethylene terephthalate layer are a composite film structure, the packaging bag is in a rectangular shape, an upper seal is arranged at the top of the packaging bag, a lower seal is arranged at the bottom of the packaging bag, a vertical seal is arranged on one side of the packaging bag connecting the top and the bottom, the width of the upper seal is 10 mm to 30 mm, the width of the lower seal is 10 mm to 30 mm, the bag body length of the packaging bag is 140 mm to 170 mm, the width of the packaging bag is 40 mm to 60 mm, the upper seal, the lower seal and the vertical seal are all dot matrix seals, the dot matrix seal is provided with densely and evenly distributed heat sealing points, and the distance between adjacent heat sealing points is 0.5 mm to 1.5 mm.
2. A coffee bean packaging bag according to claim 1, characterized in that: The width of the upper seal is 20 mm, the width of the lower seal is 20 mm, the length of the bag body of the packaging bag is 155 mm, and the width of the packaging bag is 50 mm.
3. The coffee bean packaging bag according to claim 1, characterized in that: The heat sealing points on the dot matrix seal are arranged in alternate rows.
4. The coffee bean packaging bag according to claim 1, characterized in that: The distance between adjacent heat-sealing points on the dot-matrix seal is 1 mm.
5. The coffee bean packaging bag according to claim 1, characterized in that: A triangular notch is arranged at the edge of the upper seal and / or the lower seal.