A fresh-keeping packaging film bag with automatic adjustment function
A fresh-keeping packaging and automatic adjustment technology, applied in the field of fresh-keeping packaging film, can solve the problems of bulging bags, high price, top cover and so on
Inactive Publication Date: 2016-04-20
SHANGHAI OCEAN UNIV
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Problems solved by technology
[0002] It is difficult to keep fresh food fresh, and the existing fresh-keeping methods are mostly controlled atmosphere, freezing, and cold storage
These common fresh-keeping methods need to invest in expensive equipment, so the cost of use is relatively high, and strict cold chain conditions are required in storage and transportation
If you use general packaging materials and methods for storage, transportation and sales at room temperature, it will deteriorate immediately.
Especially the bagged and bottled packages that are common at present are not only easy to rot, but also have serious bag swelling and top cover phenomenon in bagged and boxed bottled packages.
Method used
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Embodiment Construction
[0018] The present invention is further described below in conjunction with the examples and the examples of the present invention are given.
[0019] Such as figure 1 , This fresh-keeping packaging film bag with automatic adjustment function shown in 2, its concrete structure is as follows:
[0020] A. The fresh-keeping packaging film bag is a composite film of polypropylene PP and polyethylene PE, or a composite film of polyethylene PE and polyester PET, or a composite film of polypropylene PP and polyester PET ;
[0021] B. The fresh-keeping packaging film bags use polypropylene PP or polyethylene PE as the inner layer, polyester PET or polypropylene PP as the outer layer, and are composited with part of the inner layer to form a single layer on one side and a double layer on the other side. A packaging bag with one-way ventilation function;
[0022] C. One side of the fresh-keeping packaging film bag is a single layer, and the other side is a double layer, and the sin...
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Abstract
The invention relates to a fresh-keeping packaging film bag with an automatic regulation function. The fresh-keeping packaging film bag is characterized in that the fresh-keeping packaging film bag is formed by compositing polypropylene with polyethylene, or compositing a polyester film with a polyethylene film, or compositing the polyester film with a polypropylene film. The fresh-keeping packaging film bag respectively takes the polypropylene or polyethylene as an inner layer and takes the polyester or polypropylene as an outer layer, and a packaging bag with a one-way ventilation function is formed by composition, wherein one surface is single-layer, and the other surface is double-layer. Compared with the current general packaging film, the fresh-keeping packaging film bag with the automatic regulation function can realize the biological regulation function of foods in the packaging bag, keeps the original color and taste of fresh foods, and does not have a bag bulging phenomenon.
Description
technical field [0001] The invention relates to a packaging material, in particular to a fresh-keeping packaging film with an automatic adjustment function. Background technique [0002] It is difficult to keep fresh food fresh. Most of the existing fresh-keeping methods are controlled atmosphere, freezing and cold storage. These common fresh-keeping methods need to invest in expensive equipment, so the use cost is relatively high, and strict cold chain conditions are required in storage and transportation. If use general packing material and method to carry out storage and transportation and sale at normal temperature, can go bad immediately again. Especially the bagged and bottled packages that are common at present are not only easy to rot, but also have serious bag swelling and top cover phenomena in bagged packages and boxed bottled packages. Therefore how to solve the packaging preservation of some fresh foods, so that the quality of the fresh foods in the bag is eff...
Claims
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IPC IPC(8): B65D81/24B65D65/40B32B27/06B32B27/30B32B27/36
Inventor 杨福馨张恒光卢叶陈晨伟
Owner SHANGHAI OCEAN UNIV