CN217047821U

CN217047821U - Degradable antibacterial preservative film

Info

Publication number: CN217047821U
Application number: CN202123178718.4U
Authority: CN
Inventors: 王丽红; 杨瑞娟; 周经纶; 黄暄暄; 刘昊哲
Original assignee: Shandong Eco Benign Plastics Technology Co ltd
Current assignee: Jinan Zhongke Guangyuan Environmental Protection Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-26
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to a plastic wrap technical field specifically discloses an antibiotic plastic wrap of degradable. The plastic wrap is including the top layer, intermediate level and the bottom that stack gradually, the intermediate level is the antibiotic layer of degradation, sets up the bottom with between the top layer, the top layer is linear low density polyethylene layer, the bottom is high density polyethylene layer. The utility model discloses an antibiotic plastic wrap of degradable adopts the food level raw materials, has stable antibiotic effect, and can degrade completely in natural environment after using, and green has effectively solved some present plastic wrap and has not possessed the bacterinertness, leads to the fresh-keeping effect to discount greatly to and the non-degradable problem of this type of plastic wrap. Additionally, the utility model discloses an antibiotic plastic wrap of this kind of degradable still has resistant characteristics of impaling, and above-mentioned technical advantage makes the utility model discloses an antibiotic plastic wrap of degradable more is favorable to the fresh-keeping of food etc..

Description

Degradable antibacterial preservative film

Technical Field

The utility model belongs to the technical field of the plastic wrap technique and specifically relates to an antibiotic plastic wrap of degradable.

Background

In recent years, food safety is increasingly emphasized by people, and people try to reduce potential food safety hazards in various ways. The preservative film as a packaging material not only has the advantages of attractive appearance, convenient transportation and the like, but also has the effects of preserving and prolonging the shelf life, and is an indispensable component in production and life.

The types of preservative films sold on the market are various, and mainly comprise 3 types of Polyethylene (PE) films, polyvinyl chloride (PVC) films and polyvinylidene chloride (PVDC) films. Among them, the PE film and the PVDC film are widely used, but the PVDC preservative film is not stable during heating, and releases carcinogenic substances, which is harmful to human body. Although the three types of preservative films have certain preservation function, the three types of preservative films have no antibacterial property, so that the preservation effect is greatly reduced. On the other hand, it is one of the sources of "white contamination" because it is not degradable.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a degradable antibacterial preservative film which has the advantages of antibacterium, puncture resistance, safety, environmental protection and the like.

In order to achieve the purpose, the utility model discloses three layer construction that stacks gradually has been set up: the surface layer is a linear low-density polyethylene layer, the middle layer is a degradation antibacterial layer, and the bottom layer is a high-density polyethylene layer.

Further, the degradation antibacterial layer adopts ecological degradation master batch.

Further, the thickness of the degradation antibacterial layer is 5-10 μm.

Further, the thickness of the bottom layer is 1-4 μm.

Further, the thickness of the surface layer is 5-10 μm.

Further, the thickness of the degradable antibacterial preservative film is 15-22 μm.

Further, the utility model discloses a three-layer is crowded technology altogether and is made.

Compared with the prior art, the invention has the advantages that the linear low-density polyethylene layer endows the product with good toughness and puncture resistance; the degradable antibacterial layer has stable antibacterial function and endows the preservative film with degradable performance in natural environment; the high-density polyethylene layer has good heat resistance and water vapor barrier property, so that the preservation effect of the food can be further improved, and the shelf life of the food can be prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

For a further understanding of the contents, features and effects of the present invention, reference is made to the following examples, which are set forth in the following detailed description and are to be read in conjunction with the accompanying drawings.

Example 1:

a degradable antibacterial preservative film is prepared by sequentially laminating a surface layer 1, a middle layer 2 and a bottom layer 3, wherein the thicknesses of the surface layer 1, the middle layer 2 and the bottom layer 3 are 9 micrometers, 9 micrometers and 3 micrometers respectively, and a three-layer co-extrusion process is adopted. Wherein, top layer 1 is linear low density polyethylene, and intermediate level 2 adopts the ecological degradation masterbatch of Shandong tianzhuang environmental protection science and technology limited company production, sets up between top layer 1 and bottom 3.

The bottom layer 3 is made of high-density polyethylene, the highest heat-resisting temperature is 120 ℃, and the bottom layer can be used for directly packaging cooked food. Can be completely degraded in natural environment after being used and discarded, and has no secondary pollution.

Example 2:

a degradable antibacterial preservative film is prepared by sequentially laminating a surface layer 1, a middle layer 2 and a bottom layer 3, wherein the thicknesses are 6 microns, 8 microns and 1 micron in sequence, and adopting a three-layer co-extrusion process. Wherein, top layer 1 is linear low density polyethylene, and middle level 2 adopts the ecological degradation masterbatch of Shandong Tianzhu environmental protection science and technology limited production, sets up between top layer 1 and bottom 3, and bottom 3 adopts high density polyethylene.

Compared with embodiment 1, the product of the embodiment has better antibacterial effect and is suitable for packaging fruits. Can be completely degraded in natural environment after being used and discarded, and has no secondary pollution.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and a plurality of improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A degradable antibacterial preservative film is characterized in that: including top layer, intermediate level and the bottom that stacks gradually, the intermediate level is the antibiotic layer of degradation, sets up the bottom with between the top layer, the top layer is linear low density polyethylene layer, the bottom is high density polyethylene layer.

2. The degradable antibacterial plastic wrap of claim 1, wherein: the degradation antibacterial layer is ecological degradation master batch.

3. The degradable antibacterial plastic wrap of claim 1 or 2, characterized in that: the thickness of the degradable antibacterial layer is 5-10 μm.

4. The degradable antibacterial plastic wrap of claim 1, wherein: the thickness of the bottom layer is 1-4 μm.

5. The degradable antibacterial plastic wrap of claim 1, wherein: the thickness of the surface layer is 5-10 μm.

6. The degradable antibacterial plastic wrap of claim 1, characterized in that: the thickness of the degradable antibacterial preservative film is 15-22 μm.