Recoverable composite film resistant to high-temperature steaming and falling and food packaging self-standing bag

Abstract

The utility model discloses a recoverable composite film resistant to high-temperature cooking and falling. A BOPP film layer is in composite connection with an NY anti-falling layer through a first ADH adhesive layer, and the NY anti-falling layer is in composite connection with an RCPP film layer through a second ADH adhesive layer; an INK ink layer, a third ADH adhesive layer and a SiOx-BOPP film layer are further arranged between the BOPP film layer and the NY anti-falling layer, the INK ink layer is connected to the inner face of the BOPP film layer in a printing mode, the INK ink layer is connected with the SiOx-BOPP film layer in a composite mode through the third ADH adhesive layer, and the SiOx-BOPP film layer is connected with the NY anti-falling layer in a composite mode through the first ADH adhesive layer. The thickness of the BOPP film layer is 17-20 [mu] m, the thickness of the INK ink layer is 1-2.5 [mu] m, the thickness of the SiOx-BOPP film layer is 18-20 [mu] m, the thickness of the NY anti-falling layer is 11-13 [mu] m, the thickness of the RCPP film layer is 95-110 [mu] m, and the thicknesses of the first ADH adhesive layer, the second ADH adhesive layer and the third ADH adhesive layer are respectively 1-2.5 [mu] m. The food packaging self-standing bag formed by heat-sealing connection of the composite film has the performance of resisting high-temperature steaming and falling, and meanwhile, the recyclable standard requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of food packaging, specifically relates to a recyclable high-temperature cooking and drop-resistant composite film and a food packaging stand-up pouch. BACKGROUND

[0002] The food packaging stand-up pouches with high-temperature cooking and drop resistance on the market usually use PET (polyethylene terephthalate) material, aluminum foil, PA (polyamide), CPP (unstretched polypropylene) and other material combinations to meet the requirements, but they all do not meet the recyclable packaging requirements. INVENTION CONTENTS

[0003] In view of the contents in the background art, the utility model provides a recyclable high-temperature cooking and drop-resistant composite film and a food packaging stand-up pouch, which are products that meet the recyclable standards and have high-temperature cooking and drop resistance.

[0004] The disclosed recyclable high-temperature cooking and drop-resistant composite film comprises a BOPP film layer, a first ADH adhesive layer, an NY drop resistance layer, a second ADH adhesive layer and an RCPP film layer.

[0005] The BOPP film layer is connected to the NY drop resistance layer in a composite manner through the first ADH adhesive layer, and the NY drop resistance layer is connected to the RCPP film layer in a composite manner through the second ADH adhesive layer.

[0006] Further, the recyclable high-temperature cooking and drop-resistant composite film further comprises an INK ink layer, a third ADH adhesive layer and a SiOx-BOPP film layer between the BOPP film layer and the NY drop resistance layer.

[0007] The INK ink layer is connected to the inner surface of the BOPP film layer through intaglio or flexographic printing, the INK ink layer is connected to the SiOx-BOPP film layer in a composite manner through the third ADH adhesive layer, and the SiOx-BOPP film layer is connected to the NY drop resistance layer in a composite manner through the first ADH adhesive layer.

[0008] The BOPP film layer as the outer layer facilitates the printing of the INK ink layer, the RCPP film layer is used for the inner layer to play a heat sealing role, the NY material is added to the middle layer of the composite film to effectively improve the drop resistance of the composite film; the SiOx-BOPP film layer is coated with inorganic oxide (SiOx) on the surface of the BOPP film to improve its barrier property, so that the composite film product has good barrier property at the same time, the coating method and the SiOx-BOPP film layer are prior art, and the SiOx is preferably SiO2; the model of each ADH adhesive layer is specifically ADH50.50, which is a soft packaging adhesive with strong adhesive property and temperature resistance that meets the use requirements of food packaging.

[0009] Preferably, the BOPP film layer has a thickness of 17-20 μm, the INK ink layer has a thickness of 1-2.5 μm, the SiOx-BOPP film layer has a thickness of 18-20 μm, the NY anti-drop layer has a thickness of 11-13 μm, the RCPP film layer has a thickness of 95-110 μm, and the thicknesses of each of the first ADH adhesive layer, the second ADH adhesive layer, and the third ADH adhesive layer are 1-2.5 μm.

[0010] By controlling the thickness of each membrane layer, the NY content in the composite membrane material is less than 10%, the ink content is less than 5%, the adhesive content is less than 5%, and the rest is made of polypropylene, which meets the CEFLEX recycling standard requirements. Furthermore, because the main structure of the composite membrane is made of polypropylene, it can withstand high-temperature cooking at 121°C.

[0011] A food packaging stand-up pouch disclosed herein is constructed by heat-sealing the aforementioned composite film.

[0012] Through the above technical solutions, this utility model has at least the following beneficial effects:

[0013] The recyclable, high-temperature resistant, and drop-resistant composite film described in this application has a reasonable and sophisticated film layer structure. The resulting food packaging stand-up pouches not only have high-temperature resistant and drop-resistant properties, but also meet the requirements for recyclability standards. Attached Figure Description

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of this utility model in a schematic manner. Therefore, they only show the components related to this utility model.

[0015] Figure 1 This is a schematic diagram of the structure of the recyclable, high-temperature resistant, and drop-resistant composite membrane described in the embodiments of this application. Detailed Implementation

[0016] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" 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, the terms describing positional relationships are for illustrative purposes only and should not be construed as limiting this patent. If terms such as "first" and "second" are used for descriptive purposes only, they should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of the stated features. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0017] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0018] refer to Figure 1 A recyclable, high-temperature resistant, and drop-resistant composite membrane, comprising a BOPP membrane layer, a first ADH adhesive layer, an NY drop-resistant layer, a second ADH adhesive layer, and an RCPP membrane layer.

[0019] The BOPP film layer is compositely connected to the NY anti-drop layer through a first ADH adhesive layer, and the NY anti-drop layer is compositely connected to the RCPP film layer through a second ADH adhesive layer.

[0020] In this specific embodiment, an INK ink layer, a third ADH adhesive layer, and a SiOx-BOPP film layer are further included between the BOPP film layer and the NY anti-drop layer. The INK ink layer is connected to the inner surface of the BOPP film layer by gravure or flexographic printing, specifically flexographic printing. The INK ink layer is compositely connected to the SiOx-BOPP film layer through the third ADH adhesive layer, and the SiOx-BOPP film layer is compositely connected to the NY anti-drop layer through the first ADH adhesive layer.

[0021] The BOPP film layer serves as the outer layer to facilitate printing of the INK ink layer, while the RCPP film layer acts as the inner layer for heat sealing. Adding NY material to the middle layer of the composite film effectively improves its drop resistance. The SiOx-BOPP film layer is formed by depositing inorganic oxides (SiOx) on the surface of the BOPP film to enhance its barrier properties, giving the composite film product excellent barrier performance. This deposition method and the SiOx-BOPP film layer are existing technologies, with SiOx specifically referring to SiO2. The ADH adhesive layers are specifically selected as ADH50.50, used as a flexible packaging adhesive, exhibiting strong adhesion and temperature resistance that meets the requirements for food packaging.

[0022] The BOPP film layer has a thickness of 17-20 μm, the INK ink layer has a thickness of 1-2.5 μm, the SiOx-BOPP film layer has a thickness of 18-20 μm, the NY anti-drop layer has a thickness of 11-13 μm, the RCPP film layer has a thickness of 95-110 μm, and the thicknesses of each of the first ADH adhesive layer, the second ADH adhesive layer, and the third ADH adhesive layer are 1-2.5 μm.

[0023] One feasible embodiment is as follows: the BOPP film layer has a thickness of 17 μm, the INK ink layer has a thickness of 1 μm, the SiOx-BOPP film layer has a thickness of 20 μm, the NY anti-drop layer has a thickness of 11 μm, the RCPP film layer has a thickness of 110 μm, and the thicknesses of each of the first ADH adhesive layer, the second ADH adhesive layer, and the third ADH adhesive layer are 2.5 μm.

[0024] Another feasible embodiment is as follows: the BOPP film layer has a thickness of 20 μm, the INK ink layer has a thickness of 2.5 μm, the SiOx-BOPP film layer has a thickness of 18 μm, the NY anti-drop layer has a thickness of 13 μm, the RCPP film layer has a thickness of 95 μm, and the thicknesses of each of the first ADH adhesive layer, the second ADH adhesive layer, and the third ADH adhesive layer are 1 μm.

[0025] The preferred combination used in this embodiment is as follows: the BOPP film layer thickness is 18um, the INK ink layer thickness is 2um, the SiOx-BOPP film layer thickness is 19um, the NY anti-drop layer thickness is 12um, the RCPP film layer thickness is 100um, and the thicknesses of each of the first ADH adhesive layer, the second ADH adhesive layer, and the third ADH adhesive layer are 2um.

[0026] By controlling the thickness of each membrane layer, the NY content in the composite membrane material is less than 10%, the ink content is less than 5%, the adhesive content is less than 5%, and the rest is made of polypropylene, which meets the CEFLEX recycling standard requirements. Furthermore, because the main structure of the composite membrane is made of polypropylene, it can withstand high-temperature cooking at 121°C.

[0027] Food packaging stand-up pouches made by heat-sealing the above-mentioned composite films not only have the properties of being resistant to high-temperature cooking and drop resistance, but also meet the requirements of recyclability standards.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Based on the present utility model and the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A recyclable, high-temperature resistant, and drop-resistant composite membrane, characterized in that: It includes a BOPP film layer, a first ADH adhesive layer, an NY anti-drop layer, a second ADH adhesive layer, and an RCPP film layer; The BOPP film layer is compositely connected to the NY anti-drop layer through a first ADH adhesive layer, and the NY anti-drop layer is compositely connected to the RCPP film layer through a second ADH adhesive layer.

2. The recyclable, high-temperature resistant, and drop-resistant composite membrane according to claim 1, characterized in that: Between the BOPP film layer and the NY anti-drop layer, there is also an INK ink layer, a third ADH adhesive layer and a SiOx-BOPP film layer; The INK ink layer is printed and bonded to the inner surface of the BOPP film layer. The INK ink layer is composite bonded to the SiOx-BOPP film layer through the third ADH adhesive layer. The SiOx-BOPP film layer is composite bonded to the NY anti-drop layer through the first ADH adhesive layer.

3. The recyclable, high-temperature resistant, and drop-resistant composite membrane according to claim 2, characterized in that: The BOPP film layer has a thickness of 17-20 μm, the INK ink layer has a thickness of 1-2.5 μm, the SiOx-BOPP film layer has a thickness of 18-20 μm, the NY anti-drop layer has a thickness of 11-13 μm, the RCPP film layer has a thickness of 95-110 μm, and the thicknesses of each of the first ADH adhesive layer, the second ADH adhesive layer, and the third ADH adhesive layer are 1-2.5 μm.

4. A stand-up pouch for food packaging, characterized in that: It is composed of a composite film heat-sealed connection as described in any one of claims 1-3.

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