Composite sandwich high temperature retort pouch

Abstract

The utility model relates to food processing technical field, propose a kind of composite sandwich high-temperature cooking bag, to solve the problem of traditional cooking method food easy to stick breakage, string smell, and single-layer cooking bag heating efficiency is low, easy to burst. The cooking bag includes the outer layer support sleeve bag with flow hole, the inner layer lining bag with wrinkle groove and connecting strip, the sealing mechanism containing frame member and cover plate, and the buffer mechanism with air pipe and buffer gas bag body. Hot water is directly heated into the inner layer lining bag through the flow hole, the wrinkle groove and the buffer gas bag body provide buffer for the expansion of the inner layer lining bag when heating, to prevent burst. The sealing mechanism ensures that food does not leak, and the lifting rope and the carrying ring buckle facilitate the removal of the cooking bag.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and in particular to a composite sandwich high-temperature retort pouch. Background Technology

[0002] In food processing and everyday cooking, steaming and boiling are common and important cooking methods that retain the nutrients in food and make it tender and flavorful. Traditional steaming and boiling methods typically involve placing food directly in a steamer or pot for heating, but this method has some significant drawbacks. For example, food easily comes into direct contact with the pot during steaming or boiling, causing it to stick together, break, and affect its appearance and quality; moreover, when different foods are steamed together, flavors can easily mix, affecting the unique taste of each dish.

[0003] To address these issues, various types of retort pouches have emerged on the market. Most existing retort pouches are single-layered, which presents several shortcomings when cooking food. Firstly, during high-temperature cooking, hot water can only slowly penetrate from the outside of the pouch, resulting in low heating efficiency and prolonged cooking time. This not only wastes energy but may also affect the taste and nutritional value of the food. Secondly, during cooking, the food generates steam, increasing the internal pressure of the retort pouch. The inner liner is prone to excessive pressure due to expansion, and the single-layer structure lacks an effective cushioning mechanism, making it susceptible to rupture and food leakage. This not only wastes food but may also contaminate the cooking equipment. To address the aforementioned problems, this technical solution proposes a composite sandwich high-temperature retort pouch. Utility Model Content

[0004] The purpose of this invention is to solve the problems of food sticking together and breaking, and cross-contamination of flavors in traditional steaming methods, as well as the low heating efficiency and easy cracking of single-layer steaming bags. Therefore, a composite sandwich high-temperature steaming bag is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A composite sandwich high-temperature retort pouch, comprising: The outer supporting bag has multiple flow holes on its inner walls on both sides; The inner liner is fixedly connected inside the outer support bag, and the inner wall of the inner liner has multiple pleated grooves. A sealing mechanism is installed on the top of the outer supporting bag and is used to seal the outer supporting bag. A buffer mechanism is provided on the sealing mechanism; During the heating process, hot water enters the outer supporting bag through the flow hole to directly heat the inner liner. When the inner liner expands, the pleated grooves provide a buffer, and the buffer mechanism further buffers the pressure to prevent the inner liner from bursting.

[0006] In one possible design, the sealing mechanism includes a frame member fixedly connected to the top of the outer supporting bag, a cover plate pivotally connected to the top of the frame member, a sealing gasket provided at the bottom of the cover plate, the sealing gasket being tightly fitted to the top of the frame member, and a snap fastener assembly installed on one side of the cover plate, the snap fastener assembly being connected to one side of the frame member.

[0007] In one possible design, the snap-fit ​​assembly includes a locking plate pivotally connected to one side of the cover plate, a locking shaft fixedly connected to one side of the frame member, and a hook provided on the side of the locking plate near the locking shaft, the hook engaging with the locking shaft.

[0008] In one possible design, the cushioning mechanism includes a venting duct that passes through and is fixedly connected to the cover plate, and a cushioning airbag is connected to the venting duct via a docking assembly, the cushioning airbag being capable of contraction or expansion. During the heating process, when the inner liner expands, the buffer airbag expands to buffer the pressure.

[0009] In one possible design, the docking assembly includes a threaded sealing cap threaded onto the venting duct, a support tube body being fixedly connected through the top inner wall of the threaded sealing cap, the bottom opening of the buffer airbag being fixedly connected to the top end of the support tube body, and a sealing gasket ring being fixedly connected to the top inner wall of the threaded sealing cap, the bottom end of the sealing gasket ring extending into the venting duct and being interference-fitted with the inner wall of the venting duct.

[0010] In one possible design, the inner wall of the inner lining bag is fixedly connected in an array with multiple connecting strips.

[0011] In one possible design, a lifting rope is fixedly connected to the top of the cover plate.

[0012] In this application, during use, the liquid food to be steamed is first placed into the inner liner bag. At this time, multiple connecting strips fixedly installed in a matrix on the inner wall of the inner liner bag provide connection and support, improving its support strength and preventing excessive deformation of the inner liner bag during food placement. After the food is placed, the cover plate is flipped over, so that the sealing gasket at the bottom of the cover plate fits tightly against the top of the frame component, completing the initial sealing of the outer support bag. Then, the locking plate connected to one side of the cover plate is flipped and rotated, so that the hook on the locking plate near the locking shaft on the side of the locking plate engages with the locking shaft fixedly installed on one side of the frame component, positioning the cover plate and achieving a stable seal of the frame component, preventing food leakage during heating. Afterward, the entire steaming bag is placed into the steaming pot. Because multiple flow holes are evenly spaced on both sides of the inner wall of the outer support bag, hot water can enter the outer support bag through these flow holes, directly heating the inner liner bag, improving heating efficiency. During the heating process, the food generates steam, causing the inner liner to expand. Multiple evenly spaced pleats and grooves on the inner wall of the inner liner provide cushioning. Simultaneously, a cushioning mechanism on the sealing mechanism functions, expanding the air bladder connected to the sealing plate via a docking assembly. This further cushions and protects the inner liner, preventing it from bursting due to excessive pressure. The threaded sealing cap in the docking assembly is threaded onto the air duct. A support tube fixedly installed on the top inner wall of the threaded sealing cap is fixedly connected to the bottom opening of the air bladder. A sealing gasket fixedly installed on the top inner wall of the threaded sealing cap fits tightly against the inner wall of the air duct, achieving a good seal and preventing water from flowing into the inner liner or liquid food from leaking into the cooking pot. After cooking, the entire cooking bag, still at high temperature, can be easily removed from the cooking pot by pulling the carrying loop at one end of the lifting rope fixedly installed on the top of the sealing plate.

[0013] Beneficial effects: In this utility model, the composite sandwich high-temperature cooking bag, through the sealing mechanism, can make the sealing gasket and the frame components fit tightly by flipping the sealing plate. After food is put into the inner liner bag, the outer supporting bag can be sealed, thereby avoiding the problem of food leakage when cooking food. In this utility model, the composite sandwich high-temperature cooking bag, through a buffer mechanism, can buffer and protect the inner liner bag when it expands during the heating process of food by expanding the buffer air bladder. The composite sandwich high-temperature cooking bag manufactured by this utility model has an outer layer flow hole that allows hot water to directly heat the inner liner, improving heating efficiency; pleated grooves and buffer airbags provide cushioning for the expansion of the inner liner, preventing it from bursting; connecting strips enhance the inner layer's support strength; a sealing structure prevents food leakage and odor transfer; and a carrying buckle makes it easy to remove, solving many problems of traditional cooking methods. Attached Figure Description

[0014] Figure 1 This is a first-view three-dimensional structural diagram of a composite sandwich high-temperature retort bag proposed in this utility model. Figure 2 This is a two-dimensional structural diagram of a composite sandwich high-temperature retort bag proposed in this utility model from a second perspective. Figure 3 This is a three-dimensional schematic diagram of the connection structure of the outer supporting bag, the inner storage bag, and multiple connecting strips of a composite sandwich high-temperature retort bag proposed in this utility model. Figure 4 This is a front-view sectional view of a composite sandwich high-temperature retort bag proposed in this utility model. Figure 5 This is a partial cross-sectional schematic diagram of the connection structure between the outer supporting bag and the inner lining bag of a composite sandwich high-temperature retort bag proposed in this utility model.

[0015] In the diagram: 1. Outer supporting bag; 2. Inner liner; 3. Connecting strip; 4. Frame component; 5. Cover plate; 6. Locking shaft; 7. Locking plate; 71. Hook; 8. Ventilation duct; 9. Threaded sealing cap; 10. Supporting tube body; 11. Sealing gasket ring; 12. Buffer airbag body; 13. Lifting rope; 14. Carrying buckle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In one embodiment: Refer to Figure 1-5 A retort pouch includes an outer supporting bag 1 and an inner liner bag 2. The outer supporting bag 1 is made of high-temperature resistant food-grade plastic, and has multiple circular flow holes with a diameter of 2 mm evenly spaced on both inner walls. Hot water can enter the outer supporting bag 1 through these flow holes and directly heat the inner liner bag 2. The inner liner bag 2 is fixedly installed inside the outer supporting bag 1 by a high-temperature hot-pressing process. Multiple connecting strips 3 are fixedly installed in a matrix on its inner wall. The connecting strips 3 are made of the same food-grade plastic as the inner liner bag 2 and are bonded to the inner wall of the inner liner bag 2 by a heat-melt connection, which improves the support strength of the inner liner bag 2. Multiple pleated grooves are evenly spaced on the inner wall of the inner liner bag 2. The pleated grooves are 3 mm deep and 5 mm wide. When the inner liner bag 2 expands due to heat, the pleated grooves provide a buffer and prevent the inner liner bag 2 from breaking.

[0018] A sealing mechanism is installed at the top of the outer supporting bag 1, including a frame component 4 fixedly installed at the top of the outer supporting bag 1. The frame component 4 is made of the same plastic material as the outer supporting bag 1 and is integrally molded by injection molding. A sealing cover plate 5 is rotatably connected to the top of the frame component 4. A silicone sealing gasket with a thickness of 1.5 mm is provided at the bottom of the sealing cover plate 5, which fits tightly against the top of the frame component 4. A buckle assembly is installed on one side of the sealing cover plate 5, including a locking plate 7 rotatably connected to one side of the sealing cover plate 5. The locking plate 7 is made of plastic and has a thickness of 1 mm. A locking shaft 6 with a diameter of 3 mm is fixedly installed on one side of the frame component 4. A hook 71 is provided on the side of the locking plate 7 near the locking shaft 6, and the hook 71 engages with the locking shaft 6. After flipping the sealing cover plate 5 to make the sealing gasket fit tightly against the frame component 4, flipping the locking plate 7 makes the hook 71 engage with the locking shaft 6, thus achieving a stable closure of the sealing mechanism.

[0019] This application can be used in the field of food processing technology, or in other fields applicable to this application.

[0020] In another embodiment: Reference Figure 3-4 Based on the above embodiments, an improvement is made to a composite sandwich high-temperature retort pouch, which is applied in the field of food processing technology. The sealing mechanism includes a buffer mechanism, comprising a ventilation conduit 8 that penetrates and is fixedly connected to the sealing cover 5. The ventilation conduit 8 is made of plastic, with an outer diameter of 8 mm and an inner diameter of 6 mm. The ventilation conduit 8 is connected to a buffer airbag 12 via a docking assembly. The docking assembly includes a threaded sealing cap 9 threaded onto the ventilation conduit 8, with an internal thread on the inner wall that matches the external thread of the ventilation conduit 8. A support body 10 is fixedly installed through the top inner wall of the threaded sealing cap 9. The support body 10 is made of plastic, and the buffer airbag 12 is made of elastic silicone. Its bottom opening is fixedly connected to the top of the support body 10 via a heat-melting process. A sealing gasket 11 is fixedly installed on the top inner wall of the threaded sealing cap 9. The sealing gasket 11 is made of silicone, with a thickness of 1 mm, and its bottom end extends into the ventilation conduit 8 and fits tightly against the inner wall of the ventilation conduit 8 to prevent water from flowing into the inner liner 2 or liquid food from leaking out. When the inner liner 2 expands due to heat, the cushioning airbag 12 expands to provide cushioning protection for the inner liner 2.

[0021] A lifting rope 13, made of nylon and 20 cm long, is fixedly installed on the top of the cover plate 5. One end of the lifting rope 13 has a carrying loop 14 made of plastic. After heating, the entire cooking bag can be removed from the cooking pot by pulling the carrying loop 14.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A composite sandwich high-temperature retort pouch, characterized in that, include: The outer supporting bag (1) has multiple flow holes on its inner walls on both sides; The inner lining bag (2) is fixedly connected inside the outer supporting bag (1), and the inner wall of the inner lining bag (2) is provided with multiple pleated grooves; A sealing mechanism is installed on the top of the outer supporting bag (1) for sealing the outer supporting bag (1); A buffer mechanism is provided on the sealing mechanism; During the heating process, hot water enters the outer supporting bag (1) through the flow hole to directly heat the inner liner bag (2). When the inner liner bag (2) expands, the pleated groove provides a buffer margin, and the buffer mechanism further buffers the pressure to prevent the inner liner bag (2) from bursting.

2. The composite sandwich high-temperature retort pouch according to claim 1, characterized in that, The sealing mechanism includes a frame member (4) fixedly connected to the top of the outer supporting bag (1), a cover plate (5) pivotally connected to the top of the frame member (4), a sealing gasket provided at the bottom of the cover plate (5), the sealing gasket being tightly fitted to the top of the frame member (4), and a buckle assembly installed on one side of the cover plate (5), the buckle assembly being connected to one side of the frame member (4).

3. The composite sandwich high-temperature retort pouch according to claim 2, characterized in that, The buckle assembly includes a locking plate (7) pivotally connected to one side of the cover plate (5), a locking shaft (6) fixedly connected to one side of the frame member (4), and a hook (71) provided on the side of the locking plate (7) near the locking shaft (6), the hook (71) engaging with the locking shaft (6).

4. The composite sandwich high-temperature retort pouch according to claim 2, characterized in that, The buffer mechanism includes a ventilation duct (8) that passes through the cover plate (5) and is fixedly connected to the cover plate (5). A buffer airbag (12) is connected to the ventilation duct (8) through a docking assembly. The buffer airbag (12) can contract or expand. During the heating process, when the inner liner (2) expands, the buffer airbag (12) expands to buffer the pressure.

5. The composite sandwich high-temperature retort pouch according to claim 4, characterized in that, The docking assembly includes a threaded sealing cap (9) threaded onto the ventilation duct (8), a support tube (10) being fixedly connected through the top inner wall of the threaded sealing cap (9), the bottom opening of the buffer airbag (12) being fixedly connected to the top end of the support tube (10), a sealing gasket (11) being fixedly connected to the top inner wall of the threaded sealing cap (9), the bottom end of the sealing gasket (11) extending into the ventilation duct (8) and being press-fitted with the inner wall of the ventilation duct (8).

6. The composite sandwich high-temperature retort pouch according to claim 1, characterized in that, The inner wall of the inner lining bag (2) is fixedly connected with multiple connecting strips (3) in an array.

7. The composite sandwich high-temperature retort pouch according to claim 2, characterized in that, The top of the cover plate (5) is fixedly connected to a lifting rope (13).

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