A dehumidification and moisture-proof packaging film and its preparation method

A technology for encapsulating thin films and wet layers, which is applied in chemical instruments and methods, flat products, and other household appliances. It can solve the problems of unable to remove the contents, absorb moisture and packaging, and achieve the effect of extending the shelf life

Active Publication Date: 2015-07-29
SUZHOU HAISHUN PACKAGING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the high water vapor barrier packaging film on the market, which cannot remove the moisture absorbed by the contents and the packaging

Method used

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  • A dehumidification and moisture-proof packaging film and its preparation method
  • A dehumidification and moisture-proof packaging film and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 , figure 2 As shown, the present invention provides a dehumidification and moisture-proof packaging film, including a dehumidification layer 3, located in the inner layer, which is a multi-layer structure, including a corona resin layer 4, a dehumidification function layer 5 and a heat-sealing resin layer 6; a moisture-proof layer 1, Located in the outer layer, it is bonded with the dehumidification layer 3 through the adhesive layer 2; wherein, the corona-treated side of the corona resin layer 4 is connected with the adhesive layer 2, and the other side is is the dehumidification functional layer 5 ; the other side of the dehumidification functional layer 5 is the heat-sealing resin layer 6 . Wherein the material of the adhesive layer 2 is one-component polyurethane; the material of the moisture-proof layer 1 is polyvinylidene chloride. The material of the corona resin layer 4 is a matrix material, and the matrix material is polyethylene terephthala...

Embodiment 2

[0025] Such as figure 1 , figure 2 As shown, the present invention provides a dehumidification and moisture-proof packaging film, including a dehumidification layer 3, located in the inner layer, which is a multi-layer structure, including a corona resin layer 4, a dehumidification function layer 5 and a heat-sealing resin layer 6; a moisture-proof layer 1, Located in the outer layer, it is bonded with the dehumidification layer 3 through the adhesive layer 2; wherein, the corona-treated side of the corona resin layer 4 is connected with the adhesive layer 2, and the other side is is the dehumidification functional layer 5 ; the other side of the dehumidification functional layer 5 is the heat-sealing resin layer 6 . Wherein the material of the bonding layer 2 is multi-component polyurethane; the material of the moisture-proof layer 1 is polyethylene terephthalate-aluminum film composite material. The material of the corona resin layer 4 is a matrix material, and the matrix...

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Abstract

The invention provides a dehumidification and moisture-proof package film which comprises a dehumidification layer (3) and a moisture-proof layer (1), wherein the dehumidification layer (3) is positioned on the inner layer and comprises a corona resin layer (4), a dehumidification functional layer (5), and a heat sealing resin layer (6); the moisture-proof layer (1) is positioned on the outer layer and is bonded with the dehumidification layer (3) by a bonding layer (2); the corona treatment side of the corona resin layer (4) is connected with the bonding layer (2); the dehumidification functional layer (5) is arranged on the other side of the corona resin layer (4); and the heat sealing resin layer (6) is arranged on the other side of the dehumidification functional layer (5). The invention also provides a preparation method of the dehumidification and moisture-proof package film, which comprises the steps that the moisture-proof layer (1) is coated with the bonding layer (2), then the dehumidification layer (3) is paved and attached on the bonding layer (2), and the dehumidification and moisture-proof package film with a multilayer structure is prepared after cooling and solidification.

Description

technical field [0001] The invention relates to a dehumidification and moisture-proof packaging film and a preparation method thereof, in particular to a dehumidification and moisture-proof packaging film for food and medicine and a preparation method thereof. Background technique [0002] The development of food and pharmaceutical packaging is to improve strength, barrier properties (water vapor barrier, oxygen barrier, and oil barrier), reduce dosage (wall thickness), environmental protection, and multi-function. In order to ensure the safety of food and pharmaceutical packaging, packaging materials must have high water vapor barrier properties. The national standard GB / T 5048 on moisture-proof packaging points out that according to the moisture permeability of the packaging film, the packaging film can be divided into four grades: at a temperature of 40±1°C and a relative humidity of 80% to 92%, the moisture permeability < 2g / (m 2 24h) film is called grade 1 moisture...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/32B32B7/12B32B33/00B29D7/01
Inventor 林武辉李俊伍秋涛
Owner SUZHOU HAISHUN PACKAGING MATERIAL
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