Microwaveable, gas-permeable film bag

Abstract

The utility model relates to microwave breathable film bag technical field, especially for a kind of microwave breathable film bag, including base layer, the base layer includes outer layer, the inner side of outer layer is fixed with kraft paper layer, the inner side of kraft paper layer is fixed with inner layer, the both sides of the base layer coincide when being arranged with edge sealing portion around annular, the both ends of the base layer around annular are all provided with sealing portion, when the both ends of the base layer mutually adhere sealing by sealing portion, the base layer is combined and forms breathable bag body, the base layer is provided with air release groove at edge sealing portion or sealing portion, the air release groove can exhaust when microwave heating, the air release groove can keep sealing state under normal temperature and normal pressure, by the structural design of base layer and air release groove, in heating process, air release groove can be opened, ensure that water vapor in bag is smoothly discharged when microwave heating, avoid swelling rupture, in addition, there is no setting, such as the cavity that obviously releases pressure or the gas hole that increases on appearance, influence bag overall appearance.

Description

Technical Field

[0001] This utility model relates to the field of microwave breathable membrane bag technology, specifically a microwave breathable membrane bag. Background Technology

[0002] Most mainstream food packaging bags on the market adopt a completely sealed design, which has played a significant role in ensuring shelf life, but it brings many inconveniences to consumers in the final heating process.

[0003] When heating food in a bag, users must first tear open the bag, which can cause a series of problems: First, it damages the integrity of the packaging, allowing the food to come into direct contact with the air, resulting in a large loss of moisture and flavor substances (aroma) during heating, which seriously affects the taste and quality after reheating. Second, improper opening can easily cause soup to spill out or contents to pop out, which not only contaminates the inside of the microwave oven and increases the cleaning burden, but also poses a risk of burns. Therefore, a microwave-breathable membrane bag is needed to improve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a microwave-permeable membrane bag to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A microwave-safe breathable membrane bag includes a base layer, the base layer including an outer layer, a kraft paper layer fixed to the inner side of the outer layer, and an inner layer fixed to the inner side of the kraft paper layer.

[0006] When the base layer is arranged in a ring, the two sides of the overlapping part are provided with a sealing part, and both ends of the base layer arranged in a ring are provided with a sealing part. When the two ends of the base layer are sealed together by the sealing parts, the base layer is closed to form a breathable bag body.

[0007] The base layer is provided with an air venting groove at the edge sealing section or the sealing section. The air venting groove is composed of an opening groove provided on the kraft paper layer and the inner layer. The air venting groove can release air when microwave heating and can maintain the sealing state at room temperature and pressure.

[0008] As a preferred embodiment of this utility model, the opening groove is provided along the length direction of the breathable bag body, and the air venting groove is located at the sealing part.

[0009] As a preferred embodiment of this utility model, the outer layer is made of heat-sealable OPP film or PET film, the kraft paper layer is made of kraft paper material, and the inner layer is made of PE or CPP material.

[0010] As a preferred embodiment of this utility model, the breathable bag body is provided with a display window, and the display window is provided with an outer layer and an inner layer.

[0011] As a preferred embodiment of this utility model, the breathable bag body is provided with an easy-tear opening, which has a serrated structure and is provided along the top edge of the breathable bag body.

[0012] The above technical solution utilizes a serrated structure to reduce the local thickness, enabling easy opening by hand without tools. As a preferred embodiment of this utility model, the outer wall of the breathable bag body is fixed with silicone protrusions, and the number of silicone protrusions is several, which are evenly distributed along the outer wall of the breathable bag body.

[0013] By employing the above technical solutions, the friction between the bag and the microwave oven tray is increased, preventing the bag from shifting during heating and improving safety. As a preferred embodiment of this utility model, the outer surface of the silicone protrusion is provided with anti-slip particles, and there are a plurality of anti-slip particles.

[0014] As a preferred embodiment of this utility model, a lifting member is provided on one side of the outer wall of the breathable bag body. There are two lifting members, which are respectively fixed at both ends of the top of the breathable bag body.

[0015] The above technical solution ensures that the bag is subjected to balanced forces when lifted, avoiding bag tilting or local tearing caused by a single lifting component.

[0016] As a preferred embodiment of this utility model, the lifting component includes a handle, the two ends of which are respectively fixed to the two sides of the outer wall of the breathable bag body, and an adhesive layer is provided in the middle of the inner side of the handle.

[0017] With the above technical solution, when the breathable bag body expands due to heating in the microwave oven, the breathable bag body separates the handle through the adhesive layer, making it easy for the user to lift the breathable bag body after heating.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves fully sealed heating through the structural design of the base layer and the venting groove, completely locking in the moisture and aroma of food and preventing dryness and loss of flavor due to exposure. This makes the microwave heating process more efficient, hygienic, safe, and reliable. During microwave heating, the venting groove can be opened in conjunction with the sealing part to ensure that moisture inside the bag can be smoothly discharged during microwave heating, preventing expansion and rupture. In addition, there are no vent holes or obvious pressure relief cavities that would affect the overall appearance of the bag.

[0019] This invention, through its structure design of silicone protrusions and anti-slip particles, increases the contact friction between the breathable bag body and the microwave oven tray during use, effectively preventing the bag body from shifting due to tray rotation and steam impact during microwave heating, thus improving the stability of the heating process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the back of the breathable bag body in Example 1; Figure 2 This is a cross-sectional view of the breathable bag body in Example 1; Figure 3 This is a front view of the breathable bag body in Example 1; Figure 4 This is a schematic diagram of the top of the breathable bag body in Example 2; Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a front view of the breathable bag body in Example 2.

[0021] In the diagram: 1. Breathable bag body; 11. Base layer; 100. Outer layer; 101. Kraft paper layer; 102. Inner layer; 103. Opening groove; 12. Sealing part; 13. Edge sealing part; 14. Display window; 15. Easy-tear opening; 2. Lifting piece; 20. Handle; 21. Adhesive layer; 3. Silicone protrusion; 30. Anti-slip particles; 4. Air venting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0024] Example 1, please refer to Figure 1-3 This utility model provides a technical solution: A microwave-safe breathable membrane bag includes a base layer 11, the base layer 11 includes an outer layer 100, a kraft paper layer 101 is fixed to the inner side of the outer layer 100, and an inner layer 102 is fixed to the inner side of the kraft paper layer 101.

[0025] When the base layer 11 is arranged in a ring, the two sides of the overlapping part are provided with a sealing part 13. Both ends of the base layer 11 are provided with a sealing part 12. When the two ends of the base layer 11 are sealed together by the sealing part 12, the base layer 11 is closed to form a breathable bag body 1.

[0026] The base layer 11 is provided with an air venting groove 4 at the sealing part 13 (longitudinal direction of the breathable bag body 1) or the sealing part 12 (transverse direction of the breathable bag body 1). The air venting groove 4 is composed of an opening groove 103 provided on the kraft paper layer 101 and the inner layer 102. The air venting groove 4 can vent air when microwave heating and can maintain the sealed state at normal temperature and pressure.

[0027] The opening groove 103 is composed of interconnected grooves formed on the kraft paper layer 101 and the inner layer 102.

[0028] The sealing part 12 is formed by hot pressing and bonding using existing food-grade silicone.

[0029] In this embodiment, the opening groove 103 is provided along the length of the breathable bag body 1, and the air venting groove 4 is located at the sealing part 12. The effect of setting the air venting groove 4 at this location is to facilitate manufacturing and also improve the structural strength.

[0030] In this embodiment, the outer layer 100 is made of transparent heat-sealable OPP film or PET film, the kraft paper layer 101 is made of kraft paper material, and the inner layer 102 is made of transparent PE or CPP material.

[0031] In this embodiment, a display window 14 is provided on the breathable bag body 1, and the display window 14 is provided with an outer layer 100 and an inner layer 102.

[0032] Both the outer layer 100 and the inner layer 102 are made of transparent material. When only the outer layer 100 and the inner layer 102 are provided at the breathable bag body 1 corresponding to the display window 14, it is convenient for users to intuitively observe the food inside the breathable bag body 1.

[0033] Example 2, please refer to Figure 4-6 This utility model provides a technical solution: A microwave-safe breathable membrane bag includes a breathable bag body 1, on which an easy-tear opening 15 is provided. The easy-tear opening 15 has a serrated structure and is provided along the top edge of the breathable bag body 1.

[0034] The serrated structure reduces the thickness in certain areas, allowing for easy opening by hand without tools. The outer wall of the breathable bag body 1 is fixed with silicone protrusions 3. There are several silicone protrusions 3, which are evenly distributed along the outer wall of the breathable bag body 1. The outer surface of the silicone protrusions 3 is provided with anti-slip particles 30. There are several anti-slip particles 30, which increase the friction with the microwave oven tray, prevent the bag from shifting during heating, and improve the safety of use.

[0035] In this embodiment, a lifting member 2 is provided on one side of the outer wall of the breathable bag body 1. There are two lifting members 2, which are fixed at both ends of the top of the breathable bag body 1.

[0036] The symmetrical design ensures that the bag is subjected to balanced forces when lifted, preventing the bag from tilting or tearing due to a single lifting component 2.

[0037] In this embodiment, the lifting component 2 includes a handle 20, the two ends of which are fixed to the two sides of the outer wall of the breathable bag body 1, and an adhesive layer 21 is provided in the middle of the inner side of the handle 20.

[0038] When the breathable bag body 1 expands due to heating in the microwave oven, the breathable bag body 1 separates the handle 20 through the adhesive layer 21, making it easier for the user to lift the breathable bag body 1 after heating.

[0039] The working process of this utility model: When the microwave breathable membrane bag designed using this solution is in operation: The base layer 11 is cut to a preset size from roll material, and after folding, the two ends are aligned. It is then sealed by heat pressing through the sealing part 12 to form a closed breathable bag body 1. The outer layer 100 uses OPP / PET film and the inner layer 102 uses PE / CPP film, both of which are microwave-permeable materials with a microwave transmittance of ≥85%, allowing microwave energy to penetrate and heat the food inside. The hot air generated when the food is heated will push open the sealing part 12 that is bonded with food silicone, allowing the venting groove 4 that allows water vapor to pass through to leak out, thus expelling the water vapor from the breathable bag body 1 and preventing the bag from expanding and bursting due to excessive air pressure inside.

[0040] When carried, as the breathable bag body 1 expands when heated in the microwave oven, the breathable bag body 1 separates the handle 20 through the adhesive layer 21. By holding the handle 20, the bag body is lifted by the balanced force of the two symmetrical handles 20, preventing it from tilting or falling off.

[0041] The outer layer 100's abrasion resistance protects the bag from damage during transportation, the kraft paper layer 101's stiffness ensures the bag stands upright, and the inner layer 102's heat resistance prevents material degradation when food comes into contact with high temperatures. These three elements, along with functional components such as the easy-tear opening 15 and the lifting piece 2, achieve an integrated function of "safe microwave operation - convenient opening - stable carrying".

[0042] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microwave-safe breathable membrane bag, characterized in that, include: The base layer (11) includes an outer layer (100), a kraft paper layer (101) is fixed to the inner side of the outer layer (100), and an inner layer (102) is fixed to the inner side of the kraft paper layer (101). When the base layer (11) is formed into a ring, a sealing part (13) is provided at the overlapping part of the two sides. Both ends of the base layer (11) formed into a ring are provided with sealing parts (12). When the two ends of the base layer (11) are sealed together by the sealing parts (12), the base layer (11) forms a breathable bag body (1). The base layer (11) is provided with an air vent (4) at the sealing edge (13) or the sealing part (12). The air vent (4) is composed of an opening groove (103) provided on the kraft paper layer (101) and the inner layer (102). The air vent (4) can vent air when microwave heating and can maintain the sealing state at room temperature and pressure.

2. The microwave-permeable membrane bag according to claim 1, characterized in that: The opening groove (103) is arranged along the length of the breathable bag body (1), and the air venting groove (4) is located at the sealing part (12).

3. The microwave-permeable membrane bag according to claim 1, characterized in that: The outer layer (100) is made of heat-sealable OPP film or PET film, the kraft paper layer (101) is made of kraft paper material, and the inner layer (102) is made of PE or CPP material.

4. The microwave-permeable membrane bag according to claim 1, characterized in that: The breathable bag body (1) is provided with a display window (14), and the display window (14) is provided with an outer layer (100) and an inner layer (102).

5. A microwave-permeable membrane bag according to claim 4, characterized in that: The breathable bag body (1) is provided with an easy-tear opening (15), which is a serrated structure and is provided along the top edge of the breathable bag body (1).

6. A microwave-permeable membrane bag according to claim 5, characterized in that: The outer wall of the breathable bag body (1) is fixed with silicone protrusions (3), and there are several silicone protrusions (3) that are evenly distributed along the outer wall of the breathable bag body (1).

7. A microwave-permeable membrane bag according to claim 6, characterized in that: The outer surface of the silicone protrusion (3) is provided with anti-slip particles (30), and there are a plurality of anti-slip particles (30).

8. A microwave-permeable membrane bag according to claim 6, characterized in that: A lifting member (2) is provided on one side of the outer wall of the breathable bag body (1). There are two lifting members (2), which are fixed at both ends of the top of the breathable bag body (1).

9. A microwave-permeable membrane bag according to claim 8, characterized in that: The lifting component (2) includes a handle (20), the two ends of which are fixed to the two sides of the outer wall of the breathable bag body (1), and an adhesive layer (21) is provided in the middle of the inner side of the handle (20).

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