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Large-capacity liquid aseptic packaging composite film

A composite film, high-capacity technology, applied in the field of packaging materials, can solve the problems of inability to meet high drop strength composite film pinholes, inability to meet large-capacity liquid packaging, and inability to meet the requirements of sterilization, etc., to achieve good anti-drop performance, Stable coefficient of friction and excellent rubbing resistance

Inactive Publication Date: 2018-12-11
JIANGYIN BAOBO PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Liquid packaging film has been widely used in liquid flexible packaging such as milk, condiments, beverages, and bagged drinking water. The general composite film structure cannot meet the requirements of online high-temperature hydrogen peroxide sterilization, and because polyethylene cannot be packaged smoothly after high-temperature drying, Therefore, polyethylene is generally not used as the outer film of the composite film.
At present, packaging composite films are generally used in small-capacity liquid packaging, which cannot meet the requirements of large-capacity liquid packaging. The existing packaging composite films cannot meet the requirements of high drop strength and it is difficult to solve the problem of pinholes in composite film packaging; BIB (bag in box) packaging needs to be used together with rigid packaging, the packaging efficiency is low and the packaging cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The middle film layer and the composite film layer of the asymmetric PE blown film layer are made of metallocene resin and low-density polyethylene, the addition amount of metallocene resin is 80g, the addition amount of low-density polyethylene is 15g, and the addition amount of anti-sticking agent is 2g, the amount of slip agent added is 3g, and the film-forming temperature of the asymmetric PE blown film layer is 165°C.

[0027] Asymmetric PE blown film layer and double-layer stretched nylon composite layer, between double-layer stretched nylon composite layer, and between double-layer stretched nylon composite layer and symmetrical PE co-extruded film layer through two-component polyurethane adhesive It is compounded by dry compounding method, and the amount of glue on the dry basis is 4g / m2 2 .

[0028] The symmetrical PE co-extruded film layer includes a PE film layer, an adhesive layer, a nylon film layer, an adhesive layer and a PE film layer arranged in sequen...

Embodiment 2

[0030] The middle film layer and the composite film layer of the asymmetric PE blown film layer are made of metallocene resin and low-density polyethylene, the addition amount of metallocene resin is 90g, the addition amount of low-density polyethylene is 5g, and the addition amount of anti-sticking agent is 2g, the amount of slip agent added is 3g, and the film-forming temperature of the asymmetric PE blown film layer is 180°C.

[0031]Asymmetric PE blown film layer and double-layer stretched nylon composite layer, between double-layer stretched nylon composite layer, and between double-layer stretched nylon composite layer and symmetrical PE co-extruded film layer through two-component polyurethane adhesive It is compounded by dry compounding method, and the amount of glue on the dry basis is 4.5g / m2 2 .

[0032] The symmetrical PE co-extruded film layer includes a PE film layer, an adhesive layer, a nylon film layer, an adhesive layer and a PE film layer arranged in sequen...

Embodiment 3

[0034] The middle film layer and the composite film layer of the asymmetric PE blown film layer are made of metallocene resin and low-density polyethylene, the addition amount of metallocene resin is 85g, the addition amount of low-density polyethylene is 10g, and the addition amount of anti-sticking agent is 2g, the amount of slip agent added is 3g, and the film-forming temperature of the asymmetric PE blown film layer is 180°C.

[0035] Asymmetric PE blown film layer and double-layer stretched nylon composite layer, between double-layer stretched nylon composite layer, and between double-layer stretched nylon composite layer and symmetrical PE co-extruded film layer through two-component polyurethane adhesive It is compounded by dry compounding method, and the amount of glue on the dry basis is 5g / m2 2 .

[0036] The symmetrical PE co-extruded film layer includes a PE film layer, an adhesive layer, a nylon film layer, an adhesive layer and a PE film layer arranged in sequen...

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Abstract

The invention discloses a large-capacity liquid aseptic packaging composite film. The large-capacity liquid aseptic packaging composite film comprises an asymmetric PE blown film layer, a double-layerstretched nylon composite layer and a symmetric PE coextruded film layer arranged in order from the inside to the outside; the asymmetric PE blown film layer comprises a heat seal film layer, an intermediate film layer and a composite film layer arranged in order from the inside to the outside; the symmetric PE coextruded film layer comprises a PE film layer, a bonding layer a nylon film layer, abonding layer and a PE film layer arranged in order from the inside to the outside; the asymmetric PE blown film layer, the double-layer stretched nylon composite layer and the symmetric PE coextruded film layer are composited through a dry composite method. The composite film has a thickness of 130 to 150 um. The invention provides an aseptic composite film for packaging large-capacity liquid, the composite film has high mechanical strength, drop resistance, pinhole resistance and the like, and can meet the requirements of high-temperature sterilization of on-line hydrogen peroxide.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a large-capacity liquid aseptic packaging composite film. Background technique [0002] Liquid packaging film has been widely used in liquid flexible packaging such as milk, condiments, beverages, and bagged drinking water. The general composite film structure cannot meet the requirements of online high-temperature hydrogen peroxide sterilization, and because polyethylene cannot be packaged smoothly after high-temperature drying, Therefore, polyethylene is generally not used as the outer layer of the composite film. At present, packaging composite films are generally used in small-capacity liquid packaging, which cannot meet the requirements of large-capacity liquid packaging. The existing packaging composite films cannot meet the requirements of high drop strength and it is difficult to solve the problem of pinholes in composite film packaging; BIB (bag in box) pack...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B33/00B32B27/34B32B27/08B32B27/32B32B27/06
CPCB32B7/12B32B27/06B32B27/08B32B27/327B32B27/34B32B33/00B32B2307/306B32B2307/31B32B2307/50B32B2307/554B32B2307/714B32B2553/00
Inventor 陈宝昆吴玲红李全布余文建李学岱单立
Owner JIANGYIN BAOBO PACKING
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