Instant-closing sealed container made of multi-layer plastic material

Abstract

The invention provides a multi-layer plastic instant closing type sealed container, which comprises a cover body and a cup body, the cover body and the cup body are respectively provided with an open edge and a closed far end, the closed far end of the cover body is provided with a liquid outlet, the liquid outlet is provided with a sealing cover capable of being opened and closed for multiple times, the cup body is used for storing prepared food, and the cup body is used for storing the prepared food. After food is stored in the cup body, the edge of the cover body and the edge of the cup body are connected and sealed, so that the cover body and the cup body form a whole, the situation that the cover body is separated from the cup body due to external pressure is avoided, the food in the cup body can be eaten repeatedly by opening and closing the sealing cover, and the food can be stored in a sealed mode and is convenient to carry and transport; the cover body and the cup body are both of a multi-layer structure, the cover body and the cup body are both made of plastic materials, the cover body and the cup body are both formed in a plastic uptake mode, the multi-layer structure is adopted, the performance of the bodies can be firmer, the service life is long, and the high-barrier function is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of food containers, and more specifically, to an instant sealed container made of multi-layer plastic material. Background Art

[0002] There are various beverage cups, coffee cups, milk tea cups, etc. on the market now; when used for take-out or production use, they usually need to have lids, and the lids must have good sealing properties to prevent the liquid inside from leaking out, affecting drinking and carrying.

[0003] Meanwhile, there are many designs for beverage cup lids. The most common ones are provided with a straw insertion hole and an air hole on the cup lid, and then a straw is inserted into the cup body for drinking, or a closable and openable drinking opening is formed on the cup lid, and when drinking, the drinking opening is directly opened to drink.

[0004] However, the cup and the lid are locked together to achieve a good seal, but after all, it is only locked together, and it is easy to be affected by external pressure, causing the lid to separate from the cup, thereby causing liquid to leak out, affecting drinking and carrying, and is not suitable for batch transportation. The existing technology uses a membrane and the outer edge of the upper surface of the cup for heat sealing to solve the above problems. For example, patent CN212830159U discloses a paper cup lid, a self-sealing paper cup and a self-sealing paper bowl. However, due to the use of a paper membrane, when drinking, after drinking directly through a straw inserted, it will not be able to recover to a state that is convenient for carrying. If there is a bumpy amplitude, there will be a possibility of leakage, and the food in the cup is easily deteriorated and damaged due to the connection with the outside world through the straw. Therefore, it is necessary to develop processes and materials so that it can solve the above problems while having a long service life and realizing a high barrier function. Summary of the invention

[0005] In view of this, in order to solve the above problems, the present invention proposes a multi-layer plastic instant sealed container, comprising a cover body 10 and a cup body 20, wherein the cover body 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover body 10, and a sealing cover that can be opened and closed multiple times is provided at the liquid outlet 30, and the cup body 20 is used to store the prepared food. After the prepared food is stored in the cup body 20, the edges 40 of the cover body 10 and the cup body 20 are connected and sealed, so that the cover body The cover 10 and the cup body 20 form a whole, which prevents the cover 10 from being separated from the cup body 20 due to external pressure. The food in the cup body 20 can be eaten repeatedly by opening and closing the cover, so that the food can be sealed and stored, which is convenient for carrying and transportation. The main bodies of the cover 10 and the cup body 20 are both multi-layered, and the main bodies of the cover 10 and the cup body 20 are both made of plastic. The main bodies of the cover 10 and the cup body 20 are both formed by suction molding. The multi-layer structure makes the performance of the main body stronger and the service life longer, and achieves a high barrier function.

[0006] A multi-layer plastic instant sealed container, characterized in that it includes a cover body 10 and a cup body 20, both of which have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover body 10, and a sealing cover that can be opened and closed and sealed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edges 40 of the cover body 10 and the cup body 20 are connected and sealed so that the cover body 10 and the cup body 20 form a whole, the prepared food can flow out of the liquid outlet 30 and be used by opening the sealing cover, and the prepared food can be sealed and stored by closing the sealing cover, which is convenient for carrying and transportation, the main bodies of the cover body 10 and the cup body 20 are both multi-layered, and the main bodies of the cover body 10 and the cup body 20 are both made of plastic material, and the main bodies of the cover body 10 and the cup body 20 are both formed by suction molding.

[0007] Furthermore, the multi-layer structure of the cover body 10 and the cup body 20 is also provided with environmentally friendly recycled materials inside to reduce costs.

[0008] In some embodiments, at least one layer of the multi-layer structure of the cover body 10 and the cup body 20 is provided with a high barrier layer, and the high barrier layer is oxygen-blocking, water-blocking, and odor-blocking to prevent food from spoiling.

[0009] Furthermore, the high barrier layer is formed by coating, compounding, or co-extrusion in a molten state using a sheet extruder. However, the coated high barrier layer is easily damaged, and the compounded high barrier layer uses solvents, the residual solvents of which are harmful to health. Therefore, co-extrusion in a molten state using a sheet extruder is preferred.

[0010] Furthermore, when the sheet extruder is used for molten co-extrusion, whether to add an adhesive layer material or replace the substrate is determined based on the melt index. If a non-polar material is used as the substrate, the interlayer adhesion is relatively poor, so an adhesive layer material needs to be added.

[0011] Furthermore, the bonding layer material is a modified resin grafted with maleic anhydride.

[0012] In some embodiments, the edge 40 is a folded edge extending to the outside of the main body of the cover body 10 and the cup body 20, and the folded edges extending to the outside of the main body of the cover body 10 and the cup body 20 are contacted and connected and sealed.

[0013] Furthermore, the method of connecting and sealing the edge 40 of the cover body 10 and the cup body 20 includes: heat sealing, bonding, welding, and ultrasonic.

[0014] In some embodiments, the inner layer material of the cover body 10 and the cup body 20 is PE or PP. When PE is used, heat sealing is used due to its low melting point; when PP is used, ultrasonic welding or heat sealing is performed.

[0015] Furthermore, the outer layer material of the cover body 10 and the cup body 20 is PET or PP. When the outer layer material is PET, the transparency is higher, and when the outer layer material is PP, it can withstand higher temperatures.

[0016] In some embodiments, the vertical section of the main body of the cup body 20 is rectangular or conical. The vertical section of the main body of the cup body 20 is conical, which is easy to stack and occupies little space. At the same time, the diameter of the upper open part is larger than the diameter of the lower closed distal end, which makes it convenient to put freshly made food into the cup body 20.

[0017] In some embodiments, the liquid outlet 30 is a cylindrical structure or a conical structure protruding from the closed distal end of the cover body 10 and is formed by injection molding, which has a simple manufacturing process and is relatively easy to implement.

[0018] Furthermore, the sealing cover is connected and sealed to the liquid outlet 30 by means of threaded connection, press connection or plug connection. The threaded connection can achieve a tighter seal and is more convenient to disassemble and open.

[0019] Beneficial effects of the present invention: The present invention provides a multi-layer plastic instant sealed container, comprising a cover 10 and a cup body 20, wherein the cover 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover 10, and a sealing cover that can be opened and closed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edges 40 of the cover 10 and the cup body 20 are connected and sealed, so that the cover 10 and the cup body 20 are sealed. The cup body 20 forms an integral whole, which prevents the cover body 10 from being separated from the cup body 20 due to external pressure. The food in the cup body 20 can be eaten repeatedly by opening and closing the cover, so that the food can be sealed and stored, which is convenient for carrying and transportation. The cover body 10 and the cup body 20 are both multi-layered, and the cover body 10 and the cup body 20 are both made of plastic. The cover body 10 and the cup body 20 are both formed by suction molding. The multi-layer structure makes the performance of the body stronger and the service life longer, and achieves a high barrier function. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a diagram showing the overall structure of the instant sealed container made of multi-layer plastic material of the present invention.

[0021] Figure 2 It is a flat lay view of the cover body 10 and the main body of the cup body 20 in Example 1 of the instant sealed container made of multi-layer plastic material of the present invention.

[0022] Figure 3 It is a flattened view of the cover body 10 and the main body of the cup body 20 in Example 2 of the instant sealed container made of multi-layer plastic material of the present invention.

[0023] Figure 4 It is a flat lay view of the cover body 10 and the main body of the cup body 20 in Example 3 of the instant sealed container made of multi-layer plastic material of the present invention.

[0024] Main component symbols

[0025] Cover body 10; cup body 20; liquid outlet 30; edge 40.

[0026] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] Embodiment 1:

[0028] like Figure 1-2As shown, a multi-layer plastic instant sealed container includes a cover body 10 and a cup body 20, wherein the cover body 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover body 10, and a sealing cover that can be opened and closed and sealed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edge 40 is a folded edge extending to the outside of the main body of the cover body 10 and the cup body 20, and the folded edges extending to the outside of the main body of the cover body 10 and the cup body 20 are contacted and connected and sealed, and the method for connecting and sealing the edge 40 at the cover body 10 and the cup body 20 includes: heat sealing, bonding, welding, and ultrasonic waves, so that the cover body 10 and the cup body 20 form a whole, and the prepared food flows out of the liquid outlet 30 and is used by opening the sealing cover, and the food is closed by closing the sealing cover. The sealed storage of prepared food is achieved, which is convenient for carrying and transportation. The main bodies of the cover body 10 and the cup body 20 are both multi-layered, and the main bodies of the cover body 10 and the cup body 20 are both made of plastic. The main bodies of the cover body 10 and the cup body 20 are both formed by suction molding. The vertical section of the main body of the cup body 20 is rectangular or conical. The vertical section of the main body of the cup body 20 is conical, which is easy to stack and occupies a small space. At the same time, the upper open diameter is larger than the diameter of the lower closed distal end, which is convenient for loading the prepared food into the cup body 20. The liquid outlet 30 is a cylindrical structure or a conical structure protruding from the closed distal end of the cover body 10, which is formed by injection molding, has a simple manufacturing process, and is relatively easy to achieve. The cover is connected and sealed to the liquid outlet 30 by threaded connection, press connection or plug connection. The threaded connection can achieve a tighter seal and is more convenient to disassemble and open.

[0029] The main body of the cover body 10 and the cup body 20 has a three-layer structure. The inner layer material of the cover body 10 and the cup body 20 is PE. PE has a low melting point and is easy to heat-seal. The outer layer material of the cover body 10 and the cup body 20 is PET. The middle layer material of the cover body 10 and the cup body 20 is a high barrier layer. The middle layer material of the cover body 10 and the cup body 20 is EVOH. The high barrier layer is oxygen-blocking, water-blocking, and odor-blocking to prevent food from spoiling. The high barrier layer is coated and composited.

[0030] The principle of blister molding is: the positioned three-layer plate is heated to a softened state in an oven; then a closed space is formed between the blister mold and its surroundings and the air in the mold cavity is instantly evacuated; the plate is tightly attached to the mold surface; and the product is obtained by cooling and shaping.

[0031] Embodiment 2:

[0032] like Figure 1 and 3As shown, a multi-layer plastic instant sealed container includes a cover body 10 and a cup body 20, wherein the cover body 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover body 10, and a sealing cover that can be opened and closed and sealed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edge 40 is a folded edge extending to the outside of the main body of the cover body 10 and the cup body 20, and the folded edges extending to the outside of the main body of the cover body 10 and the cup body 20 are contacted and connected and sealed, and the method for connecting and sealing the edge 40 at the cover body 10 and the cup body 20 includes: heat sealing, bonding, welding, and ultrasonic waves, so that the cover body 10 and the cup body 20 form a whole, and the prepared food flows out of the liquid outlet 30 and is used by opening the sealing cover, and the food is closed by closing the sealing cover. The sealed storage of prepared food is achieved, which is convenient for carrying and transportation. The main bodies of the cover body 10 and the cup body 20 are both multi-layered, and the main bodies of the cover body 10 and the cup body 20 are both made of plastic. The main bodies of the cover body 10 and the cup body 20 are both formed by suction molding. The vertical section of the main body of the cup body 20 is rectangular or conical. The vertical section of the main body of the cup body 20 is conical, which is easy to stack and occupies a small space. At the same time, the upper open diameter is larger than the diameter of the lower closed distal end, which is convenient for loading the prepared food into the cup body 20. The liquid outlet 30 is a cylindrical structure or a conical structure protruding from the closed distal end of the cover body 10, which is formed by injection molding, has a simple manufacturing process, and is relatively easy to achieve. The cover is connected and sealed to the liquid outlet 30 by threaded connection, press connection or plug connection. The threaded connection can achieve a tighter seal and is more convenient to disassemble and open.

[0033] The main body of the cover body 10 and the cup body 20 has a five-layer structure. The inner layer material of the main body of the cover body 10 and the cup body 20 is PE. PE has a low melting point and is easy to heat-seal. The outer layer material of the main body of the cover body 10 and the cup body 20 is PP. The middle layer material of the main body of the cover body 10 and the cup body 20 is EVOH. The middle layer material of the main body of the cover body 10 and the cup body 20 is a high barrier layer. The high barrier layer is oxygen-blocking, water-blocking, and odor-blocking to prevent food from spoiling. The high barrier layer is co-extruded in a molten state by a material extruder. Since the coated high barrier layer is easily damaged, the composite high barrier layer will use solvents, and the residual solvents are harmful to health. At the same time, since the bonding strength between PP and EVOH, PE and EVOH is relatively poor, it is necessary to add an adhesive layer material, and the adhesive layer material is a modified resin grafted with maleic anhydride.

[0034] The principle of blister molding is: the positioned five-layer plate is heated to a softened state in an oven; then a closed space is formed between the blister mold and its surroundings and the air in the mold cavity is instantly evacuated; the plate is tightly attached to the mold surface; and the product is obtained by cooling and shaping.

[0035] Beneficial effects of the present invention: The present invention provides a multi-layer plastic instant sealed container, comprising a cover 10 and a cup body 20, wherein the cover 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover 10, and a sealing cover that can be opened and closed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edges 40 of the cover 10 and the cup body 20 are connected and sealed, so that the cover 10 and the cup body 20 are sealed. The cup body 20 forms an integral whole, which prevents the cover body 10 from being separated from the cup body 20 due to external pressure. The food in the cup body 20 can be eaten repeatedly by opening and closing the cover, so that the food can be sealed and stored, which is convenient for carrying and transportation. The cover body 10 and the cup body 20 are both multi-layered, and the cover body 10 and the cup body 20 are both made of plastic. The cover body 10 and the cup body 20 are both formed by suction molding. The multi-layer structure makes the performance of the body stronger and the service life longer, and achieves a high barrier function.

[0036] Embodiment 3:

[0037] like Figure 1 and 4As shown, a multi-layer plastic instant sealed container includes a cover body 10 and a cup body 20, wherein the cover body 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover body 10, and a sealing cover that can be opened and closed and sealed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edge 40 is a folded edge extending to the outside of the main body of the cover body 10 and the cup body 20, and the folded edges extending to the outside of the main body of the cover body 10 and the cup body 20 are contacted and connected and sealed, and the method for connecting and sealing the edge 40 at the cover body 10 and the cup body 20 includes: heat sealing, bonding, welding, and ultrasonic waves, so that the cover body 10 and the cup body 20 form a whole, and the prepared food flows out of the liquid outlet 30 and is used by opening the sealing cover, and the food is closed by closing the sealing cover. The sealed storage of prepared food is achieved, which is convenient for carrying and transportation. The main bodies of the cover body 10 and the cup body 20 are both multi-layered, and the main bodies of the cover body 10 and the cup body 20 are both made of plastic. The main bodies of the cover body 10 and the cup body 20 are both formed by suction molding. The vertical section of the main body of the cup body 20 is rectangular or conical. The vertical section of the main body of the cup body 20 is conical, which is easy to stack and occupies a small space. At the same time, the upper open diameter is larger than the diameter of the lower closed distal end, which is convenient for loading the prepared food into the cup body 20. The liquid outlet 30 is a cylindrical structure or a conical structure protruding from the closed distal end of the cover body 10, which is formed by injection molding, has a simple manufacturing process, and is relatively easy to achieve. The cover is connected and sealed to the liquid outlet 30 by threaded connection, press connection or plug connection. The threaded connection can achieve a tighter seal and is more convenient to disassemble and open.

[0038] The main body of the cover body 10 and the cup body 20 has a five-layer structure. The inner layer material of the main body of the cover body 10 and the cup body 20 is PP, which is easy to weld. The outer layer material of the main body of the cover body 10 and the cup body 20 is PP. The middle layer materials of the main body of the cover body 10 and the cup body 20 are bonding layer, EVOH, and bonding layer in sequence. The middle layer material of the main body of the cover body 10 and the cup body 20 is a high barrier layer, which is oxygen-blocking, water-blocking, and odor-blocking to prevent food spoilage. The high barrier layer is co-extruded in a molten state by a material extruder. Since the coated high barrier layer is easily damaged, the composite high barrier layer uses solvents, and the residual solvents are harmful to health. At the same time, since the bonding force between PP and EVOH is relatively poor, it is necessary to add a bonding layer material, and the bonding layer material is a modified resin grafted with maleic anhydride.

[0039] The principle of blister molding is: the positioned five-layer plate is heated to a softened state in an oven; then a closed space is formed between the blister mold and its surroundings and the air in the mold cavity is instantly evacuated; the plate is tightly attached to the mold surface; and the product is obtained by cooling and shaping.

[0040] Beneficial effects of the present invention: The present invention provides a multi-layer plastic instant sealed container, comprising a cover 10 and a cup body 20, wherein the cover 10 and the cup body 20 both have an open edge 40 and a closed distal end, a liquid outlet 30 is provided at the closed distal end of the cover 10, and a sealing cover that can be opened and closed multiple times is provided at the liquid outlet 30, the cup body 20 is used to store prepared food, and after the prepared food is stored in the cup body 20, the edges 40 of the cover 10 and the cup body 20 are connected and sealed, so that the cover 10 and the cup body 20 are sealed. The cup body 20 forms an integral whole, which prevents the cover body 10 from being separated from the cup body 20 due to external pressure. The food in the cup body 20 can be eaten repeatedly by opening and closing the cover, so that the food can be sealed and stored, which is convenient for carrying and transportation. The cover body 10 and the cup body 20 are both multi-layered, and the cover body 10 and the cup body 20 are both made of plastic. The cover body 10 and the cup body 20 are both formed by suction molding. The multi-layer structure makes the performance of the body stronger and the service life longer, and achieves a high barrier function.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-layer plastic instant sealed container, characterized in that: The invention comprises a cover body (10) and a cup body (20), wherein the cover body (10) and the cup body (20) both have an open edge (40) and a closed distal end, wherein the closed distal end of the cover body (10) is provided with a liquid outlet (30), and the liquid outlet (30) is provided with a sealing cover that can be opened and closed multiple times, wherein the cup body (20) is used to store prepared food, and when the prepared food is stored in the cup body (20), the edges (40) of the cover body (10) and the cup body (20) are connected to each other. The cover (10) and the cup body (20) are connected and sealed so that the cover body (10) and the cup body (20) form a whole. The prepared food can flow out from the liquid outlet (30) and be used by opening the cover, and the prepared food can be sealed and stored by closing the cover, which is convenient for carrying and transportation. The main bodies of the cover body (10) and the cup body (20) are both multi-layered, and the main bodies of the cover body (10) and the cup body (20) are both made of plastic. The main bodies of the cover body (10) and the cup body (20) are both formed by suction molding.

2. The instant sealed container made of multi-layer plastic material as claimed in claim 1, characterized in that: Environmentally friendly recycled materials are also provided inside the multi-layer structure of the main body of the cover body (10) and the cup body (20).

3. The multi-layer plastic instant sealed container according to claim 1, characterized in that: At least one layer of the multi-layer structure of the main body of the cover body (10) and the cup body (20) is provided with a high barrier layer, and the high barrier layer is oxygen-barrier, water-barrier and odor-barrier.

4. The instant sealed container made of multi-layer plastic material as claimed in claim 1, characterized in that: The high barrier layer is formed by coating, compounding, or co-extrusion in the molten state by a sheet extruder. However, the coated high barrier layer is easily damaged, and the compounded high barrier layer uses solvents, and the residual solvents are harmful to health. Therefore, the co-extrusion in the molten state by a sheet extruder is preferred. When the co-extrusion in the molten state by a sheet extruder is adopted, whether to add an adhesive layer material or to replace the substrate is selected according to the melt index. If a non-polar material is used as the substrate, the interlayer adhesion is relatively poor, so an adhesive layer material needs to be added. The adhesive layer material is a modified resin grafted with maleic anhydride.

5. The multi-layer plastic instant sealed container according to claim 1, characterized in that: The edge (40) is a folded edge extending toward the outside of the main body of the cover body (10) and the cup body (20), and the folded edges extending toward the outside of the main body of the cover body (10) and the cup body (20) are brought into contact and connected and sealed.

6. The instant sealed container made of multi-layer plastic material as claimed in claim 1, characterized in that: The method for connecting and sealing the edge (40) of the cover body (10) and the cup body (20) comprises: heat sealing, bonding, welding, and ultrasonic.

7. The multi-layer plastic instant sealed container according to claim 1, characterized in that: The inner layer material of the main body of the cover body (10) and the cup body (20) is PE or PP. When PE is used, heat sealing is adopted due to its low melting point; when PP is used, ultrasonic welding or heat sealing is performed.

8. The multi-layer plastic instant sealed container according to claim 1, characterized in that: The outer layer material of the main body of the cover body (10) and the cup body (20) is PET or PP. When the outer layer material is PET, the transparency is higher, and when the outer layer material is PP, it can withstand higher temperatures.

9. The multi-layer plastic instant sealed container according to claim 1, characterized in that: The vertical section of the main body of the cup body (20) is rectangular or conical. The vertical section of the main body of the cup body (20) is conical, which is easy to stack and occupies a small space. At the same time, the diameter of the upper open end is larger than the diameter of the lower closed distal end, which makes it convenient to put freshly prepared food into the cup body (20).

10. The multi-layer plastic instant sealed container according to claim 1, characterized in that: The liquid outlet (30) is a cylindrical structure or a conical structure protruding from the closed distal end of the cover body (10), and is formed by injection molding, with a simple manufacturing process and relatively easy implementation.

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