CN221718034U - A transverse straight line easy-tear packaging film - Google Patents

Abstract

The utility model discloses a transverse straight-line easy-tear packaging film, which comprises a transverse embossed sealing layer, an extruded layer and a barrier layer, wherein the extruded layer has one side compositely connected with the barrier layer, and the other side is provided with a plurality of first transverse embossed grooves, and a first bulge is formed between the first transverse embossed grooves; the transverse embossed sealing layer has a plurality of second transverse embossed grooves matching with the first bulges, and a second bulge matching with the first transverse embossed grooves is formed between the second transverse embossed grooves; the transverse embossed sealing layer and the extruded layer are meshed and connected through the first transverse embossed groove and the second bulge, and the first bulge and the second transverse embossed groove. The packaging film prepared by the utility model has a lower transverse tear strength, and can be easily torn in a transverse straight line without positioning.

Description

A transverse straight line easy-tear packaging film

Technical Field

The utility model relates to the technical field of packaging films, in particular to a transverse linear easy-tear packaging film.

Background Art

The existing packaging film adopts a multi-layer composite structure, including film, glue layer and supporting materials. The packaging film needs to have a high sealing performance to protect the internal products from the intrusion of external moisture, oxygen or other pollutants. In order to meet this requirement, the packaging film will use a more sturdy material, resulting in the packaging material being difficult to tear horizontally in application scenarios such as strip packaging, or the tearing edge is uneven, affecting the customer experience.

The current material structure is mainly PET/AL/PE, PET/MPET/PE, and the sealing layer is mainly PE or PP made by blown film or cast film. Usually, the longitudinal tear strength of PE or PP made by blown film or cast film is lower than the transverse tear strength, so when tearing the package transversely, the tear will be biased towards the longitudinal direction, which makes it impossible to tear the package transversely or extremely difficult to tear the package, affecting the user experience.

Utility Model Content

In view of this, the utility model discloses a transverse linear tearable packaging film, by which the transverse linear tearable film at any position of the packaging material can be achieved, so as to improve the convenience, user experience and safety of packaging.

In order to achieve the above purpose, the technical solution of the utility model is to provide

A transverse linear tearable packaging film, comprising a transverse embossed sealing layer, an extruded layer and a barrier layer, wherein the transverse embossed sealing layer, the extruded layer and the barrier layer are compositely connected from bottom to top;

A transverse embossed sealing layer, wherein a plurality of second transverse embossed grooves are arranged on the side facing the extruded layer, and second protrusions are formed between the second transverse embossed grooves;

The extruded layer has one side surface compositely connected with the barrier layer, and the other side surface is provided with a plurality of first transverse embossed grooves, and first protrusions that coincide with the second transverse embossed grooves are formed between the first transverse embossed grooves;

The transverse embossed sealing layer and the extruded layer are meshed and connected through the first transverse embossed groove and the second protrusion, and the first protrusion and the second transverse embossed groove.

Furthermore, it also includes a printing layer and an adhesive layer, and the printing layer is compounded on the side of the barrier layer away from the extruded layer through the adhesive layer.

Furthermore, the extruded layer is made of polyethylene, and the thickness of the extruded layer is 10-60 um.

Furthermore, the tear strength of the transverse embossed sealing layer is greater than the tear strength of the extruded layer.

Furthermore, the transverse embossed sealing layer is made of polyethylene or polypropylene.

Furthermore, the thickness of the transverse embossed sealing layer is 10-60 um, and the depth of the second transverse embossed groove is 5-45 um.

Furthermore, the barrier layer is made of at least one or more of AL, MPET, MOPP, and MPE; and the thickness of the barrier layer is 5-30 um.

Furthermore, the printing layer is made of PET, NY, BOPP or OPE; and the thickness of the printing layer is 10-30um.

Furthermore, the adhesive layer is made of polyurethane or polyethylene; the thickness of the adhesive layer is 1-20 um.

Furthermore, the tear strength range of the extruded layer raw material (transverse direction, 40 μm) is: 1.0-2.5N/15mm.

Furthermore, the tear strength range of the raw material of the transverse embossed sealing layer without embossing (transverse direction, 40 μm) is: 3.0-8.0 N/15 mm.

Furthermore, the tear strength range of the raw material of the transversely embossed sealing layer (transversely, 40 μm) is: 2.5-8.0 N/15 mm.

A method for preparing a transverse linear easy-tear packaging film comprises the following steps:

1) Preparation of transverse embossed sealing layer: PE or CPP particles are formed into film by film blowing or casting, and the film is pressed into transverse patterns by a transverse embossing roller at high temperature;

2) Extruding the molten polyethylene resin between the sealing layer and the barrier layer by extrusion.

The advantages and beneficial effects of the utility model are:

(1) The packaging film prepared by the utility model has lower tear strength and can be easily torn in a horizontal straight line without the need for positioning.

(2) The packaging film of the utility model improves the force distribution design so that when the package is torn open, the force is concentrated on the horizontal straight line corresponding to the bottom of the second horizontal embossed groove, reducing the resistance in the longitudinal direction, making it easier to tear open the package, thereby improving the opening convenience and user experience of the package.

(3) The design of the transverse easy-tear package cleverly adjusts the physical properties and structure of the plastic material so that the tearing force is concentrated in the transverse direction during the tearing process, reducing the resistance in the longitudinal direction. This innovative design makes the package easier to tear in a specific direction and easier to tear in a straight line, which improves the convenience of opening the package.

(4) The innovation of the horizontal easy-tear packaging is also reflected in the improvement of user experience. By studying and understanding the user's behavior habits and needs when opening the package, the easy-tear mechanism and structure are designed, allowing consumers to open the package conveniently and easily, improving the product experience and customer satisfaction.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a transverse linear tearable packaging film according to the present invention;

FIG2 is a partial enlarged view of A in FIG1 ;

Transversely embossed sealing layer 1, second transversely embossed grooves 11, second protrusions 12, extruded layer 2, first transversely embossed grooves 21, first protrusions 22, barrier layer 3.

DETAILED DESCRIPTION

The specific implementation of the utility model is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

As shown in FIG1 , a transverse linear tearable packaging film comprises a transverse embossed sealing layer 1, an extruded layer 2 and a barrier layer 3, wherein the transverse embossed sealing layer 1, the extruded layer and the barrier layer are compositely connected from bottom to top;

The transverse embossed sealing layer 1 is provided with a plurality of second transverse embossed grooves 11 on the side facing the extruded layer 2, and second protrusions 12 are formed between the second transverse embossed grooves 11;

The extruded layer 2 has one side surface compositely connected with the barrier layer 3, and the other side surface is provided with a plurality of first transverse embossed grooves 21, and first protrusions 22 that coincide with the second transverse embossed grooves 11 are formed between the first transverse embossed grooves;

The transverse embossed sealing layer 1 and the extruded layer 2 are meshed and connected through the first transverse embossed groove 21 and the second protrusion 12 , and the first protrusion 22 and the second transverse embossed groove 11 .

As a preferred embodiment of the above technical solution, it further includes a printing layer 4 and an adhesive layer 5 , wherein the printing layer 4 is compounded to the side of the barrier layer 3 away from the extruded layer 2 through the adhesive layer 5 .

As a preferred embodiment of the above technical solution, the extruded layer 2 is made of polyethylene, and the thickness of the extruded layer 2 is 10-60 um.

As a preferred embodiment of the above technical solution, the tear strength of the transverse embossed sealing layer is greater than the tear strength of the extruded layer.

As a preferred embodiment of the above technical solution, the transverse embossed sealing layer 1 is made of polyethylene or polypropylene.

As a preferred embodiment of the above technical solution, the thickness of the transverse embossed sealing layer 1 is 10-60 um, and the depth of the second transverse embossed groove 11 is 5-45 um.

As a preferred embodiment of the above technical solution, the barrier layer 3 is made of at least one or more of AL, MPET, MOPP, and MPE; the thickness of the barrier layer 3 is 5-30 um.

As a preferred embodiment of the above technical solution, the printing layer 4 is made of PET, NY, BOPP or OPE; and the thickness of the printing layer 4 is 10-30 um.

As a preferred embodiment of the above technical solution, the adhesive layer 5 is made of polyurethane or polyethylene; the thickness of the adhesive layer 5 is 1-20 um.

A method for preparing a transverse linear easy-tear packaging film comprises the following steps:

1) Preparation of transverse embossed sealing layer: PE or PP particles are formed into a film by film blowing or casting, and the film is pressed into transverse patterns by a transverse embossing roller at high temperature;

2) Extruding the molten polyethylene resin between the sealing layer and the barrier layer by extrusion.

(I) Packaging film preparation

Embodiment 1:

A method for preparing a transverse linear easy-tear packaging film comprises the following steps:

1) Preparation of transverse embossed sealing layer: PP particles are formed into a film by film blowing or casting, and the film is pressed by a transverse embossing roller at high temperature to form a second transverse embossed groove 11;

2) Printing of the substrate layer;

3) The printing layer and the barrier layer are laminated together through an adhesive layer;

4) Extruding the molten polyethylene resin between the sealing layer and the barrier layer by extrusion lamination to form a film composed of the transversely embossed sealing layer 1, the extrusion lamination layer and the barrier layer extruded and laminated in sequence from bottom to top; wherein the barrier layer is the barrier layer provided with the printing layer in step 3);

Among them, a plurality of first transverse embossed grooves 21 are formed on the extruded layer toward the transverse embossed sealing layer, and first protrusions 22 are formed between the first transverse embossed grooves. The transverse embossed sealing layer 1 and the extruded layer 2 are meshed and connected through the first transverse embossed grooves 21 and the second protrusions 12, and the first protrusions 22 and the second transverse embossed grooves 11.

The resulting material structure is as follows: PET12//PE12/AL7//PE12/embossed CPP45;

The transverse embossed sealing layer 1 is made of CPP, the thickness of the transverse embossed sealing layer 1 is 45 um, and the depth of the second transverse embossed groove 11 is 10 um.

The extruded layer 2 is made of polyethylene, and the thickness of the extruded layer 2 is 12 um.

The barrier layer 3 is made of AL, and the thickness of the barrier layer 3 is 7 um.

The printing layer 4 is made of PET, and the thickness of the printing layer 4 is 12 um.

The adhesive layer 5 is made of polyethylene; the thickness of the adhesive layer 5 is 12 um.

The model and manufacturer of the main polyethylene used in the transverse embossed sealing layer are: Formosa Polypropylene 5070;

The model and manufacturer of the main polyethylene used in the extruded layer is: Sinopec 1C7A.

Embodiment 2:

A method for preparing a transverse linear easy-tear packaging film comprises the following steps:

1) Preparation of transverse embossed sealing layer: PE particles are formed into a film by film blowing or casting, and the film is pressed into a second transverse embossed groove 11 by a transverse embossing roller at high temperature;

2) Printing of the substrate layer;

3) The printing layer and the barrier layer are compounded together by extrusion;

4) Extruding the molten polyethylene resin between the sealing layer and the barrier layer by extrusion lamination to form a film composed of the transversely embossed sealing layer 1, the extrusion lamination layer and the barrier layer extruded and laminated in sequence from bottom to top; wherein the barrier layer is the barrier layer provided with the printing layer in step 3);

Among them, a plurality of first transverse embossed grooves 21 are formed on the extruded layer toward the transverse embossed sealing layer, and first protrusions 22 are formed between the first transverse embossed grooves. The transverse embossed sealing layer 1 and the extruded layer 2 are meshed and connected through the first transverse embossed grooves 21 and the second protrusions 12, and the first protrusions 22 and the second transverse embossed grooves 11.

The resulting material structure is as follows: BOPP18/MOPP18//PE12/embossed PE40;

The transverse embossed sealing layer 1 is made of polyethylene, the thickness of the transverse embossed sealing layer 1 is 40 um, and the depth of the second transverse embossed groove 11 is 10 um.

The extruded layer 2 is made of polyethylene, and the thickness of the extruded layer 2 is 12 um.

The barrier layer 3 is made of MOPP, and the thickness of the barrier layer 3 is 18 um.

The printing layer 4 is made of BOPP, and the thickness of the printing layer 4 is 18 um.

The model and manufacturer of the main polyethylene used in the transverse embossed sealing layer are: ExxonMobil 1002AY;

The model and manufacturer of polyethylene used in the extruded layer are: Sinopec 1C7A.

Embodiment 3:

A method for preparing a transverse linear easy-tear packaging film comprises the following steps:

1) Preparation of transverse embossed sealing layer: PE particles are formed into a film by film blowing or casting, and the film is pressed into a second transverse embossed groove 11 by a transverse embossing roller at high temperature;

2) Printing of the substrate layer;

3) The printing layer and the barrier layer are laminated together through an adhesive layer;

4) Extruding the molten polyethylene resin between the sealing layer and the barrier layer by extrusion lamination to form a film composed of the transversely embossed sealing layer 1, the extrusion lamination layer and the barrier layer extruded and laminated in sequence from bottom to top; wherein the barrier layer is the barrier layer provided with the printing layer in step 3);

Among them, a plurality of first transverse embossed grooves 21 are formed on the extruded layer toward the transverse embossed sealing layer, and first protrusions 22 are formed between the first transverse embossed grooves. The transverse embossed sealing layer 1 and the extruded layer 2 are meshed and connected through the first transverse embossed grooves 21 and the second protrusions 12, and the first protrusions 22 and the second transverse embossed grooves 11.

The resulting material structure is as follows: PET12//PE12/AL7//PE12/embossed PE45;

The transverse embossed sealing layer 1 is made of polyethylene, the thickness of the transverse embossed sealing layer 1 is 45 um, and the depth of the second transverse embossed groove 11 is 10 um.

The extruded layer 2 is made of polyethylene, and the thickness of the extruded layer 2 is 12 um.

The barrier layer 3 is made of AL, and the thickness of the barrier layer 3 is 7 um.

The printing layer 4 is made of PET, and the thickness of the printing layer 4 is 12 um.

The adhesive layer 5 is made of polyethylene; the thickness of the adhesive layer 5 is 12 um.

The model and manufacturer of polyethylene used in the transverse embossed sealing layer are: ExxonMobil 1002AY;

The model and manufacturer of polyethylene used in the extruded layer is: Dow 722.

Embodiment 4:

A method for preparing a transverse linear easy-tear packaging film comprises the following steps:

1) Preparation of transverse embossed sealing layer: PE particles are formed into a film by film blowing or casting, and the film is pressed into a second transverse embossed groove 11 by a transverse embossing roller at high temperature;

2) Printing of the substrate layer;

3) The printing layer and the barrier layer are laminated together through an adhesive layer;

4) Extruding the molten polyethylene resin between the sealing layer and the barrier layer by extrusion lamination to form a film composed of the transversely embossed sealing layer 1, the extrusion lamination layer and the barrier layer extruded and laminated in sequence from bottom to top; wherein the barrier layer is the barrier layer provided with the printing layer in step 3);

Among them, a plurality of first transverse embossed grooves 21 are formed on the extruded layer toward the transverse embossed sealing layer, and first protrusions 22 are formed between the first transverse embossed grooves. The transverse embossed sealing layer 1 and the extruded layer 2 are meshed and connected through the first transverse embossed grooves 21 and the second protrusions 12, and the first protrusions 22 and the second transverse embossed grooves 11.

The resulting material structure is as follows: PET12//PE12/AL7//PE12/embossed PE45;

The transverse embossed sealing layer 1 is made of polyethylene, the thickness of the transverse embossed sealing layer 1 is 45 um, and the depth of the second transverse embossed groove 11 is 10 um.

The extruded layer 2 is made of polyethylene, and the thickness of the extruded layer 2 is 12 um.

The barrier layer 3 is made of AL, and the thickness of the barrier layer 3 is 7 um.

The printing layer 4 is made of PET, and the thickness of the printing layer 4 is 12 um.

The adhesive layer 5 is made of polyethylene; the thickness of the adhesive layer 5 is 12 um.

The model and manufacturer of polyethylene used in the transverse embossed sealing layer are: Dow 5401;

The model and manufacturer of polyethylene used in the extruded layer is: Dow 722.

Comparative Example 1:

The only difference from Example 3 is that the sealing layer has no embossing arrangement.

Comparative Example 2:

The only difference from Example 2 is:

The model and manufacturer of the main polyethylene used in the transverse embossed sealing layer are: Sinopec 1C7A;

The model and manufacturer of the main polyethylene used in the extruded layer are: Sinopec 1C7A;

(II) Performance test

It can be seen from the examples and comparative examples that the packaging film prepared by the utility model has a lower tear strength and can be easily torn in a horizontal straight line without the need for positioning.

The packaging film of the utility model improves the force distribution design so that when the package is torn open, the force is concentrated on the horizontal straight line corresponding to the bottom of the second horizontal embossed groove, thereby reducing the resistance in the longitudinal direction, making it easier to tear open the package, thereby improving the opening convenience and usage experience of the package.

The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (9)

1. The transverse straight-line easy-tearing packaging film is characterized by comprising a transverse embossing sealing layer (1), an extrusion coating layer (2) and a barrier layer (3), wherein the transverse embossing sealing layer (1), the extrusion coating layer (2) and the barrier layer (3) are in composite connection from bottom to top;

A plurality of second transverse embossing grooves (11) are formed in one side of the transverse embossing sealing layer (1) facing the extrusion coating layer (2), and second bulges (12) are formed among the second transverse embossing grooves (11);

The extrusion coating layer (2) is characterized in that one side surface is in composite connection with the barrier layer (3), a plurality of first transverse embossing grooves (21) are formed in the other side surface, and first bulges (22) which are matched with the second transverse embossing grooves (11) are formed among the first transverse embossing grooves (21);

The transverse embossing sealing layer (1) and the extrusion coating layer (2) are connected with the second bulges (12) through the first transverse embossing grooves (21) and the first bulges (22) in a meshed manner with the second transverse embossing grooves (11).

2. The transverse straight-line easy-tearing packaging film according to claim 1, further comprising a printing layer (4) and an adhesive layer (5), wherein the printing layer (4) is compounded on one side, away from the extrusion coating layer (2), of the barrier layer (3) through the adhesive layer (5).

3. A transverse rectilinear easy-to-tear packaging film according to claim 2, characterized in that the extrusion coating layer (2) is polyethylene, and the thickness of the extrusion coating layer (2) is 10-60um.

4. A transverse rectilinear easy-to-tear packaging film according to claim 3, characterized in that the tear strength of the transverse embossed seal layer (1) is greater than the tear strength of the laminated layer (2).

5. A transverse rectilinear easy-to-tear packaging film according to claim 1, characterized in that the transverse embossed sealing layer (1) is of polyethylene or polypropylene.

6. A transverse rectilinear easy-to-tear packaging film according to claim 5, characterized in that the thickness of the transverse embossed seal layer (1) is 10-60um and the depth of the second transverse embossed groove (11) is 5-45um.

7. A transversal straight line easy-tearing packaging film according to claim 1, wherein at least one or more of AL, MPET, MOPP, MPE is used as the barrier layer (3); the thickness of the barrier layer (3) is 5-30um.

8. A transverse rectilinear easy-to-tear packaging film according to claim 2, characterized in that the print layer (4) is PET, NY, BOPP or OPE; and the thickness of the printing layer (4) is 10-30um.

9. A transversal straight line easy-tearing packaging film according to claim 2, characterized in that the adhesive layer (5) is made of polyurethane or polyethylene; the thickness of the bonding layer (5) is 1-20um.