CN219057108U - High-barrier packaging bag made of single material - Google Patents

Abstract

The utility model discloses a packaging bag made of a single high-barrier material, which comprises a surface protection layer, a middle image-text information layer and an inner heat sealing layer from outside to inside in sequence; the surface protection layer sequentially comprises a CPET surface layer, a CPET supporting layer, an APET layer and a nanoscale transparent alumina vapor layer from outside to inside; the middle image-text information layer is sequentially provided with a polyurethane resin bottom coating, a polyurethane resin pigment layer and a polyurethane resin bonding layer from outside to inside; the inner heat seal layer is sequentially provided with an APET layer, a CPET layer and an APET layer from outside to inside; the middle image-text information layer is an image-text information layer formed by gravure printing. The utility model realizes multi-layer and complex patterns through gravure, provides the characteristics of high barrier property and low thickness, and has the inner heat sealing layer with heat sealing property, all materials of the inner heat sealing layer can be recycled once by full packaging materials, the environmental protection of the mask bag is improved, when the used mask bag is discarded, the mask bag can be directly recycled, the recycling efficiency is improved, and the mask bag is more efficient and environment-friendly.

Description

High-barrier packaging bag made of single material

Technical Field

The utility model relates to the technical field of composite mask bags, in particular to a packaging bag made of a single material and having high barrier property.

Background

In recent years, with the daily market change of skin care daily necessities, the maintenance and repair functions of the facial mask products on the skin are widely accepted by consumers, and meanwhile, with the online shopping and the offline store popularization of the Internet, the demands of the consumers on the quick-care products such as the facial mask are increased in an explosive manner, so that the facial mask package is promoted to form a huge market demand. Because the mask product is directly contacted with human skin, and the mask essence has certain medicinal components and small molecular substances, the packaging bag of the mask product is required to have excellent protection, medium resistance, sealing property and high barrier property, so that the mask product can be guaranteed to deteriorate and spoil within 12-26 months.

At present, the skin care product mask bag is generally used for ensuring the printing/blocking/heat sealing performance, a composite film structure is formed by adopting a multi-layer material in a composite mode, and the raw materials of the mask bag generally comprise raw material packages such as polyolefin, polyester, metal aluminum, polyamide and the like, and cannot be directly recycled. The mask bag with the existing structure has low flatness and is not attractive. The mask bag structure of the existing structure is often realized by a thicker thickness for realizing high barrier. The mask bag with the existing structure contains PE or PP heat sealing layers, so that high transparency and reasonable heat sealing strength cannot be considered.

Disclosure of Invention

In view of the defects existing at present, the utility model provides the packaging bag made of the single material, which realizes multi-layer and complex patterns through gravure printing, provides the polyester packaging material with high barrier property and heat sealing performance, and more than 95% of the packaging bag is made of the polyester material and does not contain components such as metal aluminum and the like which cannot be directly recycled, so that the packaging bag material can be recycled and reused in one step, the environmental protection performance of the mask bag is improved, and when the used mask bag is discarded, the recycling efficiency is improved, and the mask bag is more efficient and environment-friendly.

In order to achieve the above purpose, the utility model provides a packaging bag made of a single high-barrier material, wherein the packaging bag is sequentially provided with a surface protection layer, a middle image-text information layer and an inner heat sealing layer from outside to inside; the surface protection layer sequentially comprises a crystalline polyethylene terephthalate surface layer, a crystalline polyethylene terephthalate supporting layer, an amorphous polyethylene terephthalate layer and a nano transparent alumina vapor layer from outside to inside; the middle image-text information layer is sequentially provided with a polyurethane resin bottom coating, a polyurethane resin pigment layer and a polyurethane resin bonding layer from outside to inside; the inner heat sealing layer is sequentially provided with an amorphous polyethylene terephthalate layer, a crystalline polyethylene terephthalate layer and an amorphous polyethylene terephthalate layer from outside to inside; the intermediate image-text information layer is an image-text information layer formed by gravure printing.

According to one aspect of the utility model, the surface protection layer is connected with the intermediate graphic information layer by printing.

According to one aspect of the utility model, the intermediate graphic information layer is connected with the inner heat-sealing layer by glue.

According to one aspect of the utility model, the glue is a two-component polyurethane glue or a one-component polyurethane glue.

According to one aspect of the utility model, the thickness of the surface protection layer is 12 to 25 μm.

According to one aspect of the utility model, the thickness of the intermediate teletext layer is 1-2 μm.

According to one aspect of the utility model, the inner heat-seal layer has a thickness of 35-60 μm.

The implementation advantages of the utility model are that:

the utility model provides a packaging bag made of a single high-barrier material, which comprises a surface protection layer, a middle image-text information layer and an inner heat sealing layer from outside to inside in sequence; the surface protection layer sequentially comprises a CPET surface layer, a CPET supporting layer, an APET layer and a nanoscale transparent alumina vapor layer from outside to inside; the middle image-text information layer is sequentially provided with a polyurethane resin bottom coating, a polyurethane resin pigment layer and a polyurethane resin bonding layer from outside to inside; the inner heat seal layer is sequentially provided with an APET layer, a CPET layer and an APET layer from outside to inside; the middle image-text information layer is an image-text information layer formed by gravure printing. The utility model realizes multi-layer and complex patterns through gravure, provides the polyester packing material with high barrier property and heat sealing performance, and more than 95% of packing bags are made of polyester material and contain no components such as metal aluminum which cannot be directly recovered, so that the packing bag material can be recycled at one time, the environmental protection performance of the mask bag is improved, when the used mask bag is discarded, the mask bag can be directly recovered, the recovery efficiency is improved, and the mask bag is more efficient and environment-friendly.

The implementation advantages will be further described in connection with the detailed description.

Drawings

FIG. 1 is a schematic diagram of a layered structure of a packaging bag made of a single material with high barrier property according to the present utility model;

description of the drawings: 1. a surface protection layer; 2. an intermediate graphic information layer; 3. and an inner heat sealing layer.

Detailed Description

In order that the utility model may be more readily understood, the utility model will be further described with reference to the following examples. It should be understood that these examples are intended to illustrate the utility model and not to limit the scope of the utility model, and that the described embodiments are merely some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Unless defined otherwise, the terms of art used hereinafter are consistent with the meanings understood by those skilled in the art; unless otherwise indicated, all the materials and reagents referred to herein are commercially available or may be prepared by well-known methods.

The polyethylene terephthalate is abbreviated as PET; the crystalline polyethylene terephthalate is CPET for short; the amorphous polyethylene terephthalate in the utility model is abbreviated as APET.

As shown in figure 1, a packaging bag made of a single high-barrier material is provided with a surface protection layer 1, a middle image-text information layer 2 and an inner heat sealing layer 3 in sequence from outside to inside; the surface protection layer 1 is sequentially provided with a crystalline polyethylene terephthalate surface layer, a crystalline polyethylene terephthalate supporting layer, an amorphous polyethylene terephthalate layer and a nano transparent alumina vapor layer from outside to inside; the middle image-text information layer 2 is sequentially provided with a polyurethane resin bottom coating, a polyurethane resin pigment layer and a polyurethane resin bonding layer from outside to inside; the inner heat sealing layer 3 is sequentially provided with an amorphous polyethylene terephthalate layer, a crystalline polyethylene terephthalate layer and an amorphous polyethylene terephthalate layer from outside to inside; the intermediate image-text information layer 2 is an image-text information layer formed by gravure printing.

The crystalline polyethylene terephthalate surface layer and the crystalline polyethylene terephthalate support layer of the surface protection layer 1 are made of the same material and have different roles, and thus are divided into two layers according to the roles.

The ink in the prior art is composed of a base coat, a pigment and a bonding layer. The polyurethane resin base coat, the polyurethane resin pigment layer and the polyurethane resin bonding layer of the intermediate image-text information layer form polyurethane resin ink of the intermediate image-text information layer.

In some embodiments of the present utility model, gravure printing is specifically to transfer multi-level and complex graphic information to a surface protection layer by using polyurethane ink through a printer, and the effect is the same as that of gravure printing on the market.

Illustratively, gravure does not require the shape, size, spacing and depth of the graphics.

In some embodiments of the present utility model, the surface protection layer and the intermediate graphic information layer are connected by printing.

In some embodiments of the utility model, the intermediate graphic information layer and the inner heat seal layer are connected by glue.

In some embodiments of the utility model, the glue is a two-component polyurethane glue or a one-component polyurethane glue.

In some embodiments of the utility model, the surface protective layer has a thickness of 12 to 25 μm.

In some embodiments of the present utility model, the thickness of the intermediate graphic information layer is 1-2 μm, so as to achieve the purposes of low thickness and high stiffness of the high-barrier packaging bag made of single material.

In some embodiments of the utility model, the inner heat-seal layer has a thickness of 35-60 μm.

In the present utility model, the polyethylene terephthalate of the surface protective layer of the packaging bag has high transparency.

In the utility model, the inner heat sealing layer of the packaging bag is polyethylene terephthalate, has excellent barrier capability to the migration of small molecules in the facial mask essence, can greatly reduce the risks of delamination and the like of the composite film caused by migration, and has heat sealing performance.

In the utility model, the material of the packaging bag is a polyester material (the content is more than 95%), namely the polyurethane ink, the polyurethane glue and the polyethylene terephthalate are all polyester materials, so that the material of the packaging bag is single, can be recycled and is beneficial to environmental protection.

In the utility model, the polyurethane ink forms graphic information with gravure printing, and the high barrier property can be realized by having a lower thickness than the ink layer of the prior mask packaging bag.

In the utility model, the Water Vapor Transmittance (WVTR) of the high-barrier single-material packaging bag is <1; the Oxygen Transmission Rate (OTR) is less than 1, so that the mask has excellent gas barrier property and water vapor barrier property, and completely meets the requirements of mask products.

The implementation of the utility model has the advantages that: the packaging bag is sequentially provided with a surface protection layer, a middle image-text information layer and an inner heat seal layer from outside to inside; the surface protection layer sequentially comprises a CPET surface layer, a CPET supporting layer, an APET layer and a nanoscale transparent alumina vapor layer from outside to inside; the middle image-text information layer is sequentially provided with a polyurethane resin bottom coating, a polyurethane resin pigment layer and a polyurethane resin bonding layer from outside to inside; the inner heat seal layer is sequentially provided with an APET layer, a CPET layer and an APET layer from outside to inside; the middle image-text information layer is an image-text information layer formed by gravure printing. The polyethylene terephthalate of the surface protective layer of the present utility model provides high transparency; the utility model realizes multi-layer and complex patterns through gravure, and provides the characteristics of high barrier property, high stiffness and low thickness; the inner heat-sealing layer has heat-sealing performance of polyethylene glycol terephthalate, has excellent gas barrier property and water vapor barrier property, and can greatly reduce the risk of composite film delamination caused by small molecular mobility in the mask essence; the packaging bag provided by the utility model has the advantages that more than 95% of the packaging bag is made of polyester, and no components such as metal aluminum and the like which cannot be directly recycled are contained, so that the packaging bag material can be recycled at one time, the environmental friendliness of the mask bag is improved, when the used mask bag is discarded, the packaging bag can be directly recycled, the recycling efficiency is improved, and the packaging bag is more efficient and environment-friendly.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (7)

1. A packaging bag made of a high-barrier single material is characterized in that the packaging bag is sequentially provided with a surface protection layer, a middle image-text information layer and an inner heat sealing layer from outside to inside; the surface protection layer sequentially comprises a crystalline polyethylene terephthalate surface layer, a crystalline polyethylene terephthalate supporting layer, an amorphous polyethylene terephthalate layer and a nano transparent alumina vapor layer from outside to inside; the middle image-text information layer is sequentially provided with a polyurethane resin bottom coating, a polyurethane resin pigment layer and a polyurethane resin bonding layer from outside to inside; the inner heat sealing layer is sequentially provided with an amorphous polyethylene terephthalate layer, a crystalline polyethylene terephthalate layer and an amorphous polyethylene terephthalate layer from outside to inside; the intermediate image-text information layer is an image-text information layer formed by gravure printing.

2. The high barrier single material package of claim 1, wherein the intermediate graphic information layer is disposed on the surface protective layer by printing.

3. The high barrier single material package of claim 1, wherein the intermediate graphic information layer is attached to the inner heat seal layer by glue.

4. A high barrier single material package as claimed in claim 3 wherein the glue is a two-component polyurethane glue or a one-component polyurethane glue.

5. The high barrier single material package of claim 1, wherein the surface protective layer has a thickness of 12 to 25 μm.

6. The high barrier single material package of claim 1 wherein the thickness of the intermediate graphic information layer is 1-2 μm.

7. The high barrier single material package of claim 1 wherein the inner heat seal layer has a thickness of 35-60 μm.

Images