Polypropylene thickened plastic sealed meal box

By incorporating a thickened protective inner liner and an insulated inner liner inside the plastic lunchbox, combined with a sealed inner liner cover and auxiliary sealing strip, the problems of insufficient sealing and heat preservation are solved, achieving efficient heat preservation and improved durability, and facilitating reuse.

CN223585374UActive Publication Date: 2025-11-25QINGDAO HIGHLAND PACKAGING PROD CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520400961.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2025-11-25
Estimated Expiration
2035-03-10

AI Technical Summary

Technical Problem

Existing plastic lunch boxes have insufficient sealing and heat insulation performance, which can easily lead to food spillage and burns. They are also not durable, affecting their ease of use.

Method used

A thickened polypropylene plastic sealed lunch box was designed, which has a thickened protective inner liner and a heat-insulating inner liner. Combined with a sealed inner liner cover and an auxiliary sealing strip, the sealing and heat preservation effects are enhanced, and the connection stability is improved through a snap-fit ​​structure.

Benefits of technology

It achieves excellent heat insulation and sealing performance, improves the wear resistance and durability of the lunch box, facilitates reuse, and is convenient to use.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223585374U_ABST
    Figure CN223585374U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of sealed plastic boxes, and discloses a polypropylene thickened plastic sealed lunch box, which comprises a sealed lunch box main body, a first mounting base layer is arranged on the inner side of the sealed lunch box main body, and a thickened protective liner is fixed on the inner wall of the sealed lunch box main body in an attached manner. According to the meal box disclosed by the utility model, by arranging the heat-preservation and heat-insulation inner container, when the attaching sealing cover hermetically covers the top of the sealed meal box main body, the sealing inner container cover plate can be matched with the heat-preservation and heat-insulation inner container to carry out heat-preservation and heat-preservation on food in the meal box, and the thickening protection inner container is attached to the interior of the sealed meal box main body, so that the box body is reinforced and thickened; two auxiliary sealing strips are arranged at the bottom of the sealing inner container cover plate and are tightly attached to the top of the first mounting base layer and the top of the heat preservation and insulation inner container correspondingly, the auxiliary sealing performance is good, the heat preservation and insulation capacity of the device is excellent, the sealing performance and the abrasion-resistant and durable performance are good, a conveyor can be conveniently taken and placed for reuse, and use is convenient.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to sealed plastic box technical field, concretely is a kind of polypropylene thickening plastic sealed meal box. BACKGROUND

[0002] In today's fast-paced life, the demand for take-out industry and people's daily food carrying is increasing, which makes the use of meal box more and more frequent. Traditional meal box is various, including paper meal box, ordinary plastic meal box and the like. Although the paper meal box has environmental protection characteristics to some extent, the sealing performance of the paper meal box is poor, and it is easy to cause soup leakage during transportation or carrying. After containing food, leakage and extrusion damage problems are easy to occur. Since the polypropylene plastic meal box has better durability and waterproofness, it is gradually replaced by polypropylene plastic meal box.

[0003] Although the ordinary plastic meal box has certain improvement in sealing performance and strength compared with the paper meal box, since the thickness of the ordinary plastic meal box is relatively thin, the heat insulation performance is poor. For some high-temperature food, such as hot soup and hot rice, the user is easy to be scalded when taking, and the heat insulation effect is relatively insufficient. At the same time, its sealing performance needs to be improved. During the jolting process, food spilling may still occur. After repeated use, wear and tear, rupture and other problems may occur, which affects its normal use. Therefore, we provide a polypropylene thickening plastic sealed meal box to solve the above problems. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a polypropylene thickening plastic sealed meal box, which has excellent heat insulation capacity, good sealing performance and wear resistance and durability, is convenient to take, place and transport, and is convenient to use.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a polypropylene thickening plastic sealed meal box, comprising a sealed meal box main body, a first installation base layer is arranged on the inner side of the sealed meal box main body;

[0008] The inner wall of the sealed meal box main body is fixedly connected with a thickened protection inner container, the top edge of the thickened protection inner container is clamped on the bottom of the first installation base layer, and a heat insulation inner container is arranged on the inner side of the sealed meal box main body;

[0009] The top sealing cover of the sealed lunch box body is provided with a matched sealing cover, the inner side of the matched sealing cover is provided with a sealing inner container cover plate, and the bottom of the sealing inner container cover plate is provided with two auxiliary sealing strips.

[0010] Preferably, the top of the outer side of the sealed lunch box body is provided with a buckle strip, and the bottom of the matched sealing cover is buckled and matched to the outer side of the buckle strip.

[0011] Preferably, the top of the thickened protective inner container is extruded to the bottom of the first mounting base layer, the heat-insulating inner container is sealingly and tightly combined with the top of the first mounting base layer, and the inner diameter of the top of the heat-insulating inner container is smaller than the inner diameter of the top of the thickened protective inner container.

[0012] Preferably, the inner wall of the heat-insulating inner container is away from the outer wall of the thickened protective inner container, the thickened protective inner container is matched and adapted to the inner wall of the sealed lunch box body, and the first mounting base layer is made of elastic soft material.

[0013] Preferably, the bottom of the sealed lunch box body is provided with an anti-falling protective pad, and the edge of the top of the matched sealing cover is provided with a protective protection strip.

[0014] Preferably, the outer side of the heat-insulating inner container is matched with a heat-insulating cover, and the outer side of the heat-insulating cover is away from the inner wall of the heat-insulating inner container.

[0015] Preferably, the edge of the bottom of the matched sealing cover is provided with a matched sealing strip, the matched sealing strip is sealingly and tightly combined with the outer side of the sealed lunch box body, and the matched sealing strip is buckled and matched to the bottom of the buckle strip.

[0016] Preferably, the top of the first mounting base layer and the heat-insulating inner container is provided with a sealing groove, and the bottom of the two auxiliary sealing strips is sealingly and tightly combined with the inner side of the two sealing grooves.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the polypropylene thickened plastic sealed lunch box has the following beneficial effects:

[0019] 1. The polypropylene thickened plastic sealed lunch box, by providing the first mounting base layer on the inner wall of the top of the sealed lunch box body, facilitates the installation and mounting of the heat-insulating inner container, plays a heat-insulating role, when the matched sealing cover is provided on the top of the sealed lunch box body, the inner side of the matched sealing cover is provided with a sealing inner container cover plate, the sealing inner container cover plate cooperates with the heat-insulating inner container to heat-insulate and keep warm the food in the lunch box, prevents scalding and has good heat-insulating and keeping warm effect, and the device has excellent heat-insulating and keeping warm capacity and good anti-scalding capacity.

[0020] 2、The polypropylene thickened plastic sealed lunch box, through the top of the thickened protection inner container can be engaged and installed on the bottom of the first installation base layer, plays the role of box body thickening, the top of the outer side of the sealed lunch box body is provided with a buckle strip, increases the connection sealing of the close sealing cover and the sealed lunch box body, the bottom of the sealed inner container cover plate is provided with two auxiliary sealing strips, and the bottom of the two auxiliary sealing strips is tightly attached to the top of the heat preservation and heat insulation inner container, the auxiliary sealing performance is excellent, the device sealing and wear resistance and durability are good, the device is convenient to take, place and transport and is repeatedly used, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure front view three-dimensional schematic diagram of the utility model;

[0022] Figure 2 It is a structure front view sectional three-dimensional schematic diagram of the utility model;

[0023] Figure 3 It is a structure of the utility model Figure 2 It is an enlarged schematic diagram of structure A;

[0024] Figure 4 It is a structure top view sectional three-dimensional schematic diagram of the utility model;

[0025] Figure 5 It is a structure front view three-dimensional schematic diagram of the utility model first installation base layer and heat preservation and heat insulation inner container connecting structure.

[0026] In the drawing: 1, sealed lunch box body; 2, first installation base layer; 3, sealed slot; 4, thickened protection inner container; 5, heat preservation and heat insulation inner container; 6, close sealing cover; 7, sealed inner container cover plate; 8, auxiliary sealing strip; 9, buckle strip; 10, anti-falling protective pad; 11, protective protection strip; 12, heat preservation and heat insulation cover; 13, close sealing strip. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-5 A polypropylene thickened plastic sealed lunch box, comprising a sealed lunch box body 1, the inner side of the sealed lunch box body 1 is provided with a first installation base layer 2;

[0029] The inner wall of the sealed lunch box body 1 is fixed with a thickened protective inner container 4, the top edge of the thickened protective inner container 4 is clamped on the bottom of the first installation base layer 2, and the inner side of the sealed lunch box body 1 is provided with a heat preservation and insulation inner container 5, and the top edge of the heat preservation and insulation inner container 5 is clamped and installed on the top of the first installation base layer 2;

[0030] The top sealing cover of the sealed lunch box body 1 is provided with a sealing cover 6, the inner side of the sealing cover 6 is provided with a sealing inner container cover plate 7, the bottom of the sealing inner container cover plate 7 is provided with two auxiliary sealing strips 8, and the bottoms of the two auxiliary sealing strips 8 are tightly clamped with the top of the first installation base layer 2 and the heat preservation and insulation inner container 5 respectively;

[0031] The beneficial effects expressed by the scheme are: by providing the first installation base layer 2 on the inner wall top of the sealed lunch box body 1, the installation of the heat preservation and insulation inner container 5 is facilitated, and the heat preservation and insulation effect is achieved; when the sealing cover 6 is sealed on the top of the sealed lunch box body 1, the sealing inner container cover plate 7 can cooperate with the heat preservation and insulation inner container 5 to heat-insulate and preserve the food in the lunch box, prevent scalding, and have good heat-insulation and preservation effect; the thickened protective inner container 4 is clamped inside the sealed lunch box body 1, which strengthens and thickens the box body; the bottom of the sealing inner container cover plate 7 is provided with two auxiliary sealing strips 8, which are tightly clamped with the top of the first installation base layer 2 and the heat preservation and insulation inner container 5 respectively, have good auxiliary sealing performance, make the device have excellent heat preservation and insulation capacity, and have good sealing performance, wear resistance and durability, which facilitates repeated use of the device and convenient use.

[0032] Further, the top of the outer side of the sealed lunch box body 1 is provided with a clamping strip 9, and the bottom of the sealing cover 6 is clamped and clamped on the outer side of the clamping strip 9;

[0033] By providing the clamping strip 9, the sealing cover 6 can be clamped on the outer side of the clamping strip 9, and the sealing cover 6 and the sealed lunch box body 1 have good sealing connection.

[0034] Further, the top of the thickened protective inner container 4 is extruded on the bottom of the first installation base layer 2, the heat preservation and insulation inner container 5 is sealingly clamped with the top of the first installation base layer 2, and the inner diameter of the top of the heat preservation and insulation inner container 5 is smaller than the inner diameter of the top of the thickened protective inner container 4;

[0035] By extruding the top of the thickened protective inner container 4 on the bottom of the first installation base layer 2, the first installation base layer 2 is provided, which facilitates the installation of the thickened protective inner container 4 and the heat preservation and insulation inner container 5, and the inner diameter of the top of the heat preservation and insulation inner container 5 is smaller than the inner diameter of the top of the thickened protective inner container 4, and the heat preservation and insulation inner container 5 is located at the innermost side of the lunch box, which facilitates heat insulation and preservation, and has good heat preservation effect.

[0036] Further, the inner wall of the heat preservation and insulation inner container 5 is away from the outer wall of the thickened protective inner container 4, the thickened protective inner container 4 is clamped and matched on the inner wall of the sealed lunch box body 1, and the first installation base layer 2 is made of elastic soft material.

[0037] By setting the inner wall of the heat preservation and insulation inner container 5 away from the outer wall of the thickened protective inner container 4, the heat preservation and insulation effect of the heat preservation and insulation inner container 5 is good, the thickened protective inner container 4 is matched and fitted to the inner wall of the sealed lunch box body 1, which can assist in increasing the thickness of the sealed lunch box body 1, and the stress intensity is relatively high. The first installation base layer 2 is made of elastic soft material, which is convenient for installation and fixing of the thickened protective inner container 4, and convenient for disassembly and assembly.

[0038] Further, the bottom of the sealed lunch box body 1 is provided with a drop-proof protective pad 10, and the edge of the top of the sealing cover 6 is provided with a protective strip 11;

[0039] By setting the drop-proof protective pad 10, the sealed lunch box body 1 is not easy to be damaged when falling, and the drop-proof effect is good. The protective strip 11 has a protective effect on the edge of the top of the sealing cover 6, and has excellent practicability.

[0040] Further, the outer side of the heat preservation and insulation inner container 5 is provided with a heat preservation and insulation cover 12, and the outer side of the heat preservation and insulation cover 12 is away from the inner wall of the heat preservation and insulation inner container 5;

[0041] By setting the heat preservation and insulation cover 12, the heat preservation and insulation effect of the heat preservation and insulation inner container 5 is achieved, and the overall heat preservation capacity of the lunch box is increased.

[0042] Further, the edge of the bottom of the sealing cover 6 is provided with a sealing strip 13, and the sealing strip 13 is clamped and sealed to the outer side of the sealed lunch box body 1, and the sealing strip 13 is clamped to the bottom of the buckle strip 9;

[0043] By setting the sealing strip 13, the sealing strip 13 is clamped and sealed to the outer side of the sealed lunch box body 1, which assists in increasing the sealing and leakage prevention performance.

[0044] Further, the top of the first installation base layer 2 and the heat preservation and insulation inner container 5 is provided with a sealing clamping groove 3, and the bottom of the two auxiliary sealing strips 8 is respectively sealed and clamped to the inner side of the two sealing clamping grooves 3;

[0045] By setting the top of the first installation base layer 2 and the heat preservation and insulation inner container 5 is provided with a sealing clamping groove 3, the sealing connection of the auxiliary sealing strip 8 with the first installation base layer 2 and the heat preservation and insulation inner container 5 is improved.

[0046] It should be noted that the devices in the present application are common market devices, which can be selected according to the needs during specific use, and the circuit connection relationship of each device is a simple series and parallel connection circuit, and there is no innovation point in the circuit connection. The circuit connection can be easily realized by those skilled in the art, which belongs to the prior art and will not be described in detail.

[0047] Working principle: the first mounting base layer 2 is arranged on the top of the inner wall of the sealed lunch box body 1, the thickened protection inner container 4 is arranged on the top of the first mounting base layer 2, and the thickened protection inner container 4 is fixed to the inner wall of the sealed lunch box body 1, thereby achieving the thickening effect of the box body;

[0048] The heat preservation and insulation inner container 5 is arranged on the top of the first mounting base layer 2, and the heat preservation and insulation inner container 5 is away from the thickened protection inner container 4, thereby achieving the heat preservation and insulation effect; when the sealing cover 6 is arranged on the top of the sealed lunch box body 1, the sealing inner container cover plate 7 is arranged on the inner side of the sealing cover 6, the sealing inner container cover plate 7 cooperates with the heat preservation and insulation inner container 5, thereby achieving the heat insulation and preservation effect of the food in the lunch box;

[0049] The buckle strip 9 is arranged on the top of the outer side of the sealed lunch box body 1, the sealing cover 6 is arranged on the outer side of the buckle strip 9, the sealing cover 6 is connected to the sealed lunch box body 1, and the sealing performance is good; the bottom of the sealing inner container cover plate 7 is provided with two auxiliary sealing strips 8, the bottom of the two auxiliary sealing strips 8 is tightly fixed to the top of the first mounting base layer 2 and the heat preservation and insulation inner container 5, the auxiliary sealing performance is excellent, the heat preservation and insulation effect of the device is excellent, the sealing performance and the wear resistance and durability are good, the device is convenient to take, place and transport, and the device is convenient to reuse.

[0050] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0051] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A polypropylene thickened plastic sealed meal box comprising a sealed meal box body (1), characterized in that: The inner side of the sealed lunch box body (1) is provided with a first installation base layer (2); The inner wall of the sealed lunch box body (1) is fixedly provided with a thickened protective inner container (4), the top edge of the thickened protective inner container (4) is clamped to the bottom of the first installation base layer (2), and the inner side of the sealed lunch box body (1) is provided with a heat preservation and insulation inner container (5), and the top edge of the heat preservation and insulation inner container (5) is clamped and installed to the top of the first installation base layer (2). The top sealing cover of the sealed lunch box body (1) is provided with a sealing cover (6), the inner side of the sealing cover (6) is provided with a sealing inner container cover plate (7), the bottom of the sealing inner container cover plate (7) is provided with two auxiliary sealing strips (8), and the bottoms of the two auxiliary sealing strips (8) are tightly clamped to the top of the first installation base layer (2) and the heat preservation and insulation inner container (5) respectively.

2. A polypropylene thickened plastic sealed meal box according to claim 1, characterized in that: The top of the outer side of the sealed lunch box body (1) is provided with a buckle strip (9), and the bottom of the sealing cover (6) is buckled and clamped to the outer side of the buckle strip (9).

3. A polypropylene thickened plastic sealed meal box according to claim 1, characterized in that: The top of the thickened protective inner container (4) is extruded to the bottom of the first installation base layer (2), the heat preservation and insulation inner container (5) is sealingly clamped to the top of the first installation base layer (2), and the inner diameter of the top of the heat preservation and insulation inner container (5) is smaller than that of the top of the thickened protective inner container (4).

4. The polypropylene thickened plastic sealed meal box according to claim 1, characterized in that: The inner wall of the heat preservation and insulation inner container (5) is away from the outer wall of the thickened protective inner container (4), the thickened protective inner container (4) is clamped to the inner wall of the sealed lunch box body (1), and the first installation base layer (2) is made of elastic soft material.

5. The polypropylene thickened plastic sealed meal box according to claim 1, characterized in that: The bottom of the sealed lunch box body (1) is provided with a fall-preventing protective pad (10), and the edge of the top of the sealing cover (6) is provided with a protective protection strip (11).

6. A polypropylene thickened plastic sealed meal box according to claim 1, characterized in that: The outer side of the heat preservation and insulation inner container (5) is clamped with a heat preservation and insulation cover (12), and the outer side of the heat preservation and insulation cover (12) is away from the inner wall of the heat preservation and insulation inner container (5).

7. A polypropylene thickened plastic sealed meal box according to claim 2, characterized in that: The edge of the bottom of the sealing cover (6) is provided with a sealing cover strip (13), the sealing cover strip (13) is clamped and sealed to the outer side of the sealed lunch box body (1), and the sealing cover strip (13) is clamped to the bottom of the buckle strip (9).

8. The polypropylene thickened plastic sealed meal box according to claim 1, characterized in that: The top of the first installation base layer (2) and the heat preservation and insulation inner container (5) are both provided with sealing grooves (3), and the bottoms of the two auxiliary sealing strips (8) are sealingly clamped to the inner sides of the two sealing grooves (3).