Moisture resisting packaging film applied to solid food packaging

Abstract

The invention discloses a moisture resisting packaging film applied to solid food packaging. The moisture resisting packaging film comprises a printed film layer, an Aclar film layer and a PVDC film layer. The printed film layer is located on the outer layer of a composite film and used for being printed with patterns and characters needed by printed packaging. The PVDC film layer is located between the printed film layer and the Aclar film layer and is a functional layer for blocking vapor. The Aclar film layer is located on the inner layer of the composite film. According to the moisture resisting packaging film, the PVDC film layer has high blocking performance and excellent moisture resisting and dampproof performance, and by adopting the PVDC film layer in a packaging bag, the moisture resistance of the packaging bag is improved advantageously. The moisture resisting packaging film is simple in structure and convenient to operate, moisture absorbed by food can be reduced by directly utilizing the moisture resistance of the packaging bag, the food is prevented from being affected with damp, and the moisture resisting packaging film has great application value and market popularization value in the aspect of food packaging.

Description

technical field

[0001] The invention relates to a packaging film, in particular to a moisture-resistant packaging film applied to solid food packaging. Background technique

[0002] Some solid foods currently on the market, such as biscuits, candies, etc., have a desiccant bag in the packaging bag to absorb the water vapor or other humidity generated in the packaging bag and keep the inside of the packaging bag in a dry state. environment of. Usually after the packaging bag is opened, it is easy to lose or discard the desiccant bag. If the packaging bag is sealed again, the biscuits, candies and other solid foods in the packaging bag can easily absorb external moisture, become damp, soft, or even deteriorate. , directly affect the quality of food.

[0003] In response to this, the measures to be taken are to eat the food within the specified time after opening the packaging bag; or keep the desiccant bag in the packaging bag all the time so that it cannot be lost. Take ab...

Examples

Embodiment 1

[0024] Such as figure 1 As shown, a moisture-proof packaging film applied to solid food packaging includes a printed film layer 1, an Aclar film layer 3, and a PVDC film layer 2; the printed film layer 1 is located on the outer layer of the composite film and is used for printing and packaging. Patterns and characters; PVDC film layer 2, located between the printed film layer 1 and Aclar film layer 3, is a functional layer that blocks water vapor; Aclar film layer 3, located in the inner layer of the composite film.

[0025] Among them, the Aclar film layer 3 is a polychlorotrifluoroethylene film with excellent barrier properties and chemical stability advantages. Aclar film 3 has a composite barrier film that can reduce cross-permeation and effectively isolate water vapor. It is the preferred material for solid food packaging to avoid moisture absorption. Aclar film 3 film is crystal clear and transparent, does not contain plasticizers and stabilizers, has stable biochemical...

Embodiment 2

[0029] In this embodiment, on the basis of Example 1, it is further described that the Aclar film layer 3 is a film layer of a fluorine-containing polymer. The Aclar film is a polychlorotrifluoroethylene material, which has excellent water-blocking properties and can effectively prevent external Moisture enters the inside of the food packaging bag. The coating amount of the Aclar film layer 3 is 2-3.5g / m3. The coating amount of the Aclar film layer 3 depends on the degree of fusion with the PVDC film layer 2. The two can be well glued together and have good formability. Other structures and principles involved in this embodiment are common knowledge in the field and will not be repeated here.

Embodiment 3

[0031] In this embodiment, on the basis of the above embodiments, the printed film layer 1 is further described as a transparent stretched film. The material used for the printing film layer 1 is any one of BOPP, BOPET and BOPA. The printing film layer 1 is the outermost layer of the packaging film, which is convenient for printing characters, patterns and the like. Other structures and principles involved in this embodiment are common knowledge in the field and will not be repeated here.

[0032] The solid food packaging bag described in this embodiment not only satisfies transparency and is convenient for users to observe, but also has strong moisture resistance to prevent external water vapor or moisture from entering the packaging bag and affecting the quality of food. In addition, it is convenient for consumers to use, and there is no need to worry about losing the desiccant bag, or it must be used within the specified time, which is very convenient for consumers and can...

technical field

[0001] The invention relates to a packaging film, in particular to a moisture-resistant packaging film applied to solid food packaging. Background technique

[0002] Some solid foods currently on the market, such as biscuits, candies, etc., have a desiccant bag in the packaging bag to absorb the water vapor or other humidity generated in the packaging bag and keep the inside of the packaging bag in a dry state. environment of. Usually after the packaging bag is opened, it is easy to lose or discard the desiccant bag. If the packaging bag is sealed again, the biscuits, candies and other solid foods in the packaging bag can easily absorb external moisture, become damp, soft, or even deteriorate. , directly affect the quality of food.

[0003] In response to this, the measures to be taken are to eat the food within the specified time after opening the packaging bag; or keep the desiccant bag in the packaging bag all the time so that it cannot be lost. Take ab...

Examples

Embodiment 1

[0024] Such as figure 1 As shown, a moisture-proof packaging film applied to solid food packaging includes a printed film layer 1, an Aclar film layer 3, and a PVDC film layer 2; the printed film layer 1 is located on the outer layer of the composite film and is used for printing and packaging. Patterns and characters; PVDC film layer 2, located between the printed film layer 1 and Aclar film layer 3, is a functional layer that blocks water vapor; Aclar film layer 3, located in the inner layer of the composite film.

[0025] Among them, the Aclar film layer 3 is a polychlorotrifluoroethylene film with excellent barrier properties and chemical stability advantages. Aclar film 3 has a composite barrier film that can reduce cross-permeation and effectively isolate water vapor. It is the preferred material for solid food packaging to avoid moisture absorption. Aclar film 3 film is crystal clear and transparent, does not contain plasticizers and stabilizers, has stable biochemical...

Embodiment 2

[0029] In this embodiment, on the basis of Example 1, it is further described that the Aclar film layer 3 is a film layer of a fluorine-containing polymer. The Aclar film is a polychlorotrifluoroethylene material, which has excellent water-blocking properties and can effectively prevent external Moisture enters the inside of the food packaging bag. The coating amount of the Aclar film layer 3 is 2-3.5g / m3. The coating amount of the Aclar film layer 3 depends on the degree of fusion with the PVDC film layer 2. The two can be well glued together and have good formability. Other structures and principles involved in this embodiment are common knowledge in the field and will not be repeated here.

Embodiment 3

[0031] In this embodiment, on the basis of the above embodiments, the printed film layer 1 is further described as a transparent stretched film. The material used for the printing film layer 1 is any one of BOPP, BOPET and BOPA. The printing film layer 1 is the outermost layer of the packaging film, which is convenient for printing characters, patterns and the like. Other structures and principles involved in this embodiment are common knowledge in the field and will not be repeated here.

[0032] The solid food packaging bag described in this embodiment not only satisfies transparency and is convenient for users to observe, but also has strong moisture resistance to prevent external water vapor or moisture from entering the packaging bag and affecting the quality of food. In addition, it is convenient for consumers to use, and there is no need to worry about losing the desiccant bag, or it must be used within the specified time, which is very convenient for consumers and can...

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