Easy-to-peel modified atmosphere film for fruits and vegetables

Abstract

The utility model provides a kind of easy-to-open fruit and vegetable modified atmosphere film, belong to modified atmosphere film technical field, including modified atmosphere film main body, cracking area, reinforcing lug, score line, annular easy-to-open strip;By setting cracking area and annular easy-to-open strip, consumer only needs to grip reinforcing lug and pull up, reinforcing lug breaks from score line, and the reinforcing lug of breakage drives the annular easy-to-open strip part of protruding annular easy-to-open strip and is lifted up annular easy-to-open strip main body, can start tearing from corner cracking area, and along annular easy-to-open strip annularly tear modified atmosphere film, without the aid of scissors and other tools, labor-saving, convenient during opening process.

Description

Technical Field

[0001] This utility model belongs to the field of modified atmosphere film technology, specifically relating to an easy-to-peel modified atmosphere film for fruits and vegetables. Background Technology

[0002] The descriptions in this section provide background information relevant to this disclosure only and do not constitute prior art.

[0003] Modified atmosphere packaging (MAP) films are typically made of multi-layered co-extruded films and have selective permeability to oxygen, carbon dioxide, and water vapor, spontaneously creating a gaseous environment conducive to the preservation of fruits and vegetables. To maintain their airtightness, MAP films heat-sealed onto fruit and vegetable boxes are often high in strength and toughness, making them difficult to tear open and inconvenient for consumers, sometimes requiring the use of tools such as scissors. Utility Model Content

[0004] The purpose of this utility model is to provide an easy-to-open modified atmosphere film for fruits and vegetables, which has the advantages of not affecting the sealing performance of the modified atmosphere film and being easy to tear without the need for scissors or other tools. It solves the technical problem that modified atmosphere films heat-sealed on fruit and vegetable boxes are often high in strength and toughness in order to maintain the seal, making them difficult to tear, inconvenient for consumers to open, and even requiring the use of scissors or other tools.

[0005] This utility model provides an easy-peel modified atmosphere film for fruits and vegetables, comprising: The main body of the modified atmosphere membrane is sealed on the fruit and vegetable packaging box; The crack initiation zone is located in the corner of the modified atmosphere film body inside the fruit and vegetable packaging box; The mechanical strength of the crack initiation zone is configured to be weaker than that of the controlled atmosphere membrane body; The reinforcing ear is located on the outer side of the modified atmosphere membrane body, adjacent to the crack initiation area; The serration line is located at the junction of the reinforcing ear and the modified atmosphere membrane body; An easy-open ring strip is embedded in the bottom surface of the modified atmosphere film body at the edge inside the fruit and vegetable packaging box; One end of the annular easy-open strip extends into the reinforcing ear.

[0006] As a further optimization, in order to make the tear start from the modified atmosphere film body at the corner of the fruit and vegetable packaging box, the opening shape is a right angle, which facilitates tearing along the annular easy-open strip. The tear initiation area is specifically a right-angled discontinuous scoring line.

[0007] As a further optimization, in order to ensure that the tear starts precisely from the apex of the right-angled discontinuous score line, the depth gradient design makes the tear initiation very smooth and avoids abrupt changes in the tearing force. The depth of the right-angled discontinuous score line gradually becomes shallower from the apex to both sides.

[0008] As a further optimization, in order to prevent the gripping reinforcement ear from breaking at the score line, the reinforcement ear drives the arched fiber band to pull the annular fiber band, and the annular fiber band tears the modified atmosphere membrane body in an annular shape. The annular easy-peel strip includes: A ring-shaped fiber strip is embedded in the bottom surface of the modified atmosphere membrane at the edge inside the fruit and vegetable packaging box. The annular fiber band extends into an arched fiber band near the reinforcing ear, which is located inside the reinforcing ear.

[0009] As a further optimization, in order to use multi-layer co-extrusion technology, the easily tearable layer is arranged on the outermost layer, so that the film has anisotropy in the longitudinal direction, making it easier to initiate and complete tearing from bottom to top; and the mechanical strength is guaranteed by the strength support layer, and the high barrier layer is guaranteed to have sufficient oil resistance, low temperature impact resistance, and puncture resistance; the main body of the modified atmosphere film is composed of a strength support layer, a high barrier layer and an easily tearable layer distributed from bottom to top; The lower end of the crack initiation zone extends through the easily tearable layer to the high barrier layer; The lower end of the groove extends to the high-barrier layer; The upper end of the annular easy-open strip is embedded in the bottom surface of the strength support layer.

[0010] As a further optimization, in order to reduce the stress area at the top of the annular easy-open strip and better compress the tear strength support layer, high barrier layer and easy-tear layer, a protrusion is integrally formed on the upper end of the annular easy-open strip along the length direction.

[0011] As a further optimization, to facilitate gripping the modified atmosphere membrane's ear-shaped protrusions and causing it to break at the scored line, thereby driving the annular easy-peel strip to tear the modified atmosphere membrane body, the reinforcing ear includes: The modified atmosphere membrane has ear-shaped protrusions, which are integrally formed on the outer side of the modified atmosphere membrane body.

[0012] As a further optimization, in order to cover the arched fiber strip, a PE layer is adhered to the bottom surface of the modified atmosphere membrane's ear-shaped protrusions.

[0013] As a further optimization, in order to improve the friction of the bottom surface of the reinforced ear, make it easier to grasp the reinforced ear and break it from the score line, and drive the annular easy-peel strip to tear the modified atmosphere film body, the bottom surface of the PE layer is uniformly integrally formed with anti-slip protrusions.

[0014] As a further optimization, to avoid the sharp edges of the reinforced ear causing damage to the skin of other packaging or operators, the edges of the reinforced ear are rounded.

[0015] This utility model provides an easy-peel modified atmosphere film for fruits and vegetables, which has the following improvements and advantages compared with the prior art: 1. By setting a tear initiation zone and an annular easy-open strip, consumers only need to grasp the reinforcing ear and pull it upwards. The reinforcing ear breaks off from the score line. The broken reinforcing ear drives the protruding annular easy-open strip to lift the main body of the annular easy-open strip upwards, thus initiating the tearing from the corner tear initiation zone and tearing the modified atmosphere film in a ring along the annular easy-open strip. No tools such as scissors are needed, making the opening process labor-saving and convenient.

[0016] Second, the crack initiation zone uses right-angled discontinuous scoring lines, and the depth gradually decreases from the top corner to both sides to ensure that the tear starts precisely from the corner, avoid sudden changes in tearing force or deviation of the tearing path, and improve the reliability of opening.

[0017] Third, the modified atmosphere film adopts a multi-layer composite structure. While ensuring mechanical strength and gas barrier performance, it achieves easy-tear function through easy-tear layer and ring easy-open strip, without affecting the sealing and preservation effect of the packaging. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic cross-sectional view of the structure at the edge of the main body of the modified atmosphere membrane of this utility model; Figure 4 This is a schematic cross-sectional view of the crack initiation zone of this utility model; Figure 5 This is a schematic cross-sectional view of the reinforcing ear structure of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1-Modified atmosphere membrane body, 11-Strength support layer, 12-High barrier layer, 13-Easy-tear layer, 2-Reinforcing ear, 21-Modified atmosphere membrane ear-shaped protrusion, 22-PE layer, 23-Anti-slip protrusion, 3-Cracking zone, 4-Annular easy-peel strip, 41-Annular fiber band, 411-Protrusion block, 42-Archive fiber band, 5-Score line. Detailed Implementation

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented by various different embodiments as defined and covered by the claims.

[0021] In the following description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and "vertical" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the following description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, in the following description of this utility model, unless otherwise stated, "multiple", "multiple groups", or "multiple roots" means two or more.

[0024] Please see Figure 1-5 This utility model provides a technical solution: an easy-open modified atmosphere film for fruits and vegetables, mainly used for sealing fruit and vegetable packaging boxes, and can also be used for sealing fresh meat packaging boxes, to spontaneously regulate the gas environment inside the box and extend the shelf life of fruits, vegetables, and fresh meat. At the same time, the modified atmosphere film is designed to be easy to open, improving the user experience.

[0025] like Figure 1 As shown, the easy-open modified atmosphere film for fruits and vegetables includes a modified atmosphere film body 1, a crack-inducing area 3, a reinforcing ear 2, a scoring line 5, and an annular easy-open strip 4. The modified atmosphere film body 1 is heat-sealed onto the opening of the fruit and vegetable packaging box. The crack-inducing area 3 is located on the modified atmosphere film body 1 corresponding to the corner of the packaging box. The reinforcing ear 2 is located on the outside of the modified atmosphere film body 1 and adjacent to the crack-inducing area 3. The scoring line 5 is located at the junction of the reinforcing ear 2 and the modified atmosphere film body 1. The annular easy-open strip 4 is embedded on the bottom surface of the modified atmosphere film body 1, that is, on the side closest to the inside of the packaging box, and is arranged in a ring along the edge of the packaging box, with one end of the protruding part extending into the reinforcing ear 2.

[0026] The mechanical strength of the crack initiation zone 3 is weaker than that of the controlled atmosphere membrane body 1, serving as the starting point for tearing.

[0027] like Figure 2As shown, in this embodiment, the crack initiation zone 3 is specifically a right-angled discontinuous scoring line. This scoring line is formed by die-cutting or laser processing, and the depth gradually decreases from the right-angle apex to both sides. For example, the depth at the apex is 70% of the film thickness, and decreases to 30% towards both sides. This design concentrates the tearing force at the apex, making the initiation smoother and avoiding sudden breakage or tearing path deviation.

[0028] The reinforcing ear 2 includes a modified atmosphere membrane ear-shaped protrusion 21, which is integrally formed with the modified atmosphere membrane body 1 by co-extrusion or heat sealing process.

[0029] like Figure 5 As shown, a PE layer 22 is attached to the bottom surface of the modified atmosphere film ear-shaped protrusions 21. The bottom surface of the PE layer 22 is uniformly and integrally formed with anti-slip protrusions 23 to increase friction and facilitate gripping. The corners of the reinforcing ears 2 are rounded to avoid sharp corners from damaging the packaging or the user.

[0030] The serration line 5 is located at the junction of the reinforcing ear 2 and the modified atmosphere membrane body 1, extending to the high barrier layer 12. This makes it easy for the reinforcing ear 2 to break at the serration line 5 when subjected to force, thereby driving the annular easy-open strip 4 to move.

[0031] like Figure 3 As shown, the annular easy-open strip 4 includes an annular fiber band 41 and an arched fiber band 42.

[0032] The annular fiber band 41 is embedded in the bottom surface of the modified atmosphere membrane body 1 at the edge inside the fruit and vegetable packaging box. The arched fiber band 42 extends from the side of the annular fiber band 41 near the reinforcing ear 2 and is located inside the reinforcing ear 2. The upper end of the annular fiber band 41 has a protrusion 411 integrally formed along the length direction. The protrusion 411 reduces the stress area and makes it easier to squeeze through the layered structure of the modified atmosphere membrane body 1 when it is torn.

[0033] like Figure 4 As shown, the modified atmosphere membrane body 1 is composed of a strength support layer 11, a high barrier layer 12 and an easily tearable layer 13 distributed from bottom to top.

[0034] The strength support layer 11 is typically made of polyethylene or polypropylene, providing mechanical strength; the high barrier layer 12 is made of ethylene-vinyl alcohol copolymer or polyamide, ensuring gas barrier properties; the easy-tear layer 13 is made of linear low-density polyethylene or easy-tear modified material, facilitating tearing; the lower end of the tear initiation zone 3 extends through the easy-tear layer 13 to the high barrier layer 12, and the lower end of the scoring line 5 also extends to the high barrier layer 12; the upper end of the annular easy-open strip 4 is embedded in the bottom surface of the strength support layer 11, reducing part of the thickness of the strength support layer 11, making it easier for the annular easy-open strip 4 to tear the modified atmosphere film body 1 upward from the embedded point; after tearing, a piece of the modified atmosphere film body 1 in the shape of the upper end of the packaging box is cut off, facilitating the opening of the modified atmosphere film body 1 on the packaging box.

[0035] Work process: When in use, the consumer grasps the reinforcing ear 2 and pulls it upwards. The reinforcing ear 2 breaks at the etched line 5, which at the same time drives the arched fiber band 42 and the annular fiber band 41. Under the tension, the annular fiber band 41 tears the strength support layer 11, the high barrier layer 12 and the easy-tear layer 13 of the modified atmosphere film body 1, thereby tearing the modified atmosphere film completely along the edge of the packaging box, making it easy to open.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An easy-peel modified atmosphere film for fruits and vegetables, characterized in that, include: The modified atmosphere membrane body (1) is encapsulated on the fruit and vegetable packaging box; The cracking zone (3) is located in the corner of the modified atmosphere film body (1) inside the fruit and vegetable packaging box; The mechanical strength of the crack initiation zone (3) is configured to be weaker than that of the controlled atmosphere membrane body (1). The reinforcing ear (2) is located on the outside of the modified atmosphere film body (1) adjacent to the crack initiation area (3); The serration line (5) is located at the junction of the reinforcing ear (2) and the modified atmosphere membrane body (1); An annular easy-open strip (4) is embedded in the bottom surface of the modified atmosphere film body (1) at the edge inside the fruit and vegetable packaging box; One end of the annular easy-open strip (4) extends into the reinforcing ear (2).

2. The easy-peel modified atmosphere film for fruits and vegetables according to claim 1, characterized in that, The crack initiation zone (3) is specifically a right-angled discontinuous scratch line.

3. The easy-peel modified atmosphere film for fruits and vegetables according to claim 2, characterized in that, The depth of the right-angled discontinuous scribbling lines gradually decreases from the apex to both sides.

4. The easy-peel modified atmosphere film for fruits and vegetables according to claim 1, characterized in that, The annular easy-open strip (4) includes: A ring-shaped fiber strip (41) is embedded in the bottom surface of the modified atmosphere film body (1) at the edge inside the fruit and vegetable packaging box; The annular fiber band (41) extends into an arched fiber band (42) near the reinforcing ear (2), which is located inside the reinforcing ear (2).

5. The easy-peel modified atmosphere film for fruits and vegetables according to claim 1, characterized in that, The modified atmosphere membrane body (1) is composed of a strength support layer (11), a high barrier layer (12) and an easily tearable layer (13) distributed from bottom to top; The lower end of the crack initiation zone (3) extends through the easily tearable layer (13) to the high barrier layer (12). The lower end of the scribe line (5) extends to the high barrier layer (12); The upper end of the annular easy-open strip (4) is embedded in the bottom surface of the strength support layer (11).

6. The easy-peel modified atmosphere film for fruits and vegetables according to claim 5, characterized in that, The annular easy-open strip (4) has a protrusion (411) integrally formed at the upper end along the length direction.

7. The easy-peel modified atmosphere film for fruits and vegetables according to claim 1, characterized in that, The reinforcing ear (2) includes: The modified atmosphere membrane has ear-shaped protrusions (21), which are integrally formed on the outside of the modified atmosphere membrane body (1).

8. The easy-peel modified atmosphere film for fruits and vegetables according to claim 7, characterized in that, The bottom surface of the modified atmosphere membrane ear-shaped protrusion (21) is covered with a PE layer (22).

9. The easy-peel modified atmosphere film for fruits and vegetables according to claim 8, characterized in that, The bottom surface of the PE layer (22) is uniformly integrally formed with anti-slip protrusions (23).

10. The easy-peel modified atmosphere film for fruits and vegetables according to claim 1, characterized in that, The corners of the reinforced ear (2) are rounded.

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