CN203557783U

CN203557783U - Cryogenic multi-layer coextrusion film

Info

Publication number: CN203557783U
Application number: CN201320600836.6U
Authority: CN
Inventors: 李洪河
Original assignee: DONGGUAN BOCHEN PLASTIC TECHNOLOGY Co Ltd
Current assignee: DONGGUAN BOCHEN PLASTIC TECHNOLOGY Co Ltd
Priority date: 2013-09-27
Filing date: 2013-09-27
Publication date: 2014-04-23
Anticipated expiration: 2023-09-27

Abstract

The utility model relates to the technical field of a coextrusion film, and in particular relates to a cryogenic multi-layer coextrusion film. The cryogenic multi-layer coextrusion film comprises five layers including four polyethylene (PE) layers and a barrier layer, wherein the four PE layers include at least one low temperature resistant PE layer. The cryogenic multi-layer coextrusion film disclosed by the utility model, which comprises five layers including four polyethylene (PE) layers and a barrier layer, and the four PE layers include at least one low temperature resistant PE layer, can obstruct oxygen and vapor through excellent barrier performance of the barrier layer, and can be preserved for long time under a cryogenic condition due to strong cryogenic performance of the low temperature resistant PE layer, so that the cryogenic multi-layer coextrusion film is long in shelf life.

Description

A kind of cryogenic freezing PP TYPE

Technical field

The utility model relates to co-extrusion membrane technology field, is specifically related to a kind of cryogenic freezing PP TYPE.

Background technology

In plastic flexible packaging material, packaging for foodstuff is its maximum application market, along with the raising of the level of consumption, also more and more stricter to the requirement of packaging for foodstuff, and this has promoted the development of the multi-functional packing film material of high-barrier.On ordinary meaning, the structure of packing film goods depends on the functional requirement of packing to film, for packaging for foodstuff, packaging material generally must meet the demand of market the following aspects: 1, due to oxygen, can cause the oxidation deterioration of fat and protein, so will there be the ability of excellent blocking oxygen; 2, because of the entering or volatilize and can cause the variation of food taste of steam, must there is excellent steam obstructing capacity; 3, for to prevent that peculiar smell from entering or the volatilization of fragrance, guarantee food original flavor, need to there be excellent obstruct peculiar smell and the ability of fragrance; 4, the needs of preserving for cryogenic freezing, have good resistance to low temperature; 5, meet the requirement of sterilization, avoid microorganism to exist and destroy food, there is certain heat resistance; 6, for decoration is attractive in appearance and the needs of the information that commodity are necessary, there is good printing; 7, be protection food, meet the needs of carrying and transportation, must there is stronger mechanical property; 8, requirement of other some optical property aspects etc.Therefore, produce the packaging material with above characteristic, by the material of single variety, cannot meet these requirements, lean on the multi-layer co-extruded composite of different material to meet these demands.

In order to reach above-mentioned requirements, in prior art, occurred a lot of high-barrier multi-layer co-extrusion packaging films, but the resistance to low temperature of existing high-isolating packaging film is poor, when packaged food is preserved in cryogenic freezing, packaging film is fragile, and retention cycle is short.

Summary of the invention

In order to overcome the shortcoming and defect existing in prior art, the purpose of this utility model is to provide a kind of low temperature resistant freezing, cryogenic freezing PP TYPE that retention cycle is long.

The purpose of this utility model is achieved through the following technical solutions: a kind of cryogenic freezing PP TYPE, and it is five-layer co-squeezing film, and five-layer co-squeezing film is comprised of four layers of PE layer and one deck barrier layer, and four layers of PE layer comprise at least low temperature resistant PE layer of one deck.

Wherein, described barrier layer is PA layer.

Wherein, described five-layer co-squeezing film is followed successively by a PE layer, the 2nd PE layer, the 3rd PA layer, the 4th PE layer and the 5th PE layer from skin to internal layer.

Wherein, a described PE layer and described the 5th PE layer are low temperature resistant PE layer.

Wherein, a described PE layer, described the 2nd PE layer and described the 5th PE layer are low temperature resistant PE layer.

Wherein, a described PE layer, described the 4th PE layer and described the 5th PE layer are low temperature resistant PE layer.

Wherein, a described PE layer, described the 2nd PE layer, described the 4th PE layer and described the 5th PE layer are low temperature resistant PE layer.

Wherein, the Thickness Ratio of described five-layer co-squeezing film from skin to internal layer is followed successively by 1.5 ~ 2:1.25 ~ 1.75:1 ~ 2:1.25 ~ 1.75:1.5 ~ 2.

Wherein, the thickness of described five-layer co-squeezing film from skin to internal layer is followed successively by 20 ~ 80um, 15 ~ 65um, 20 ~ 80um, 15 ~ 65um and 20 ~ 80um.

Wherein, the thickness of described five-layer co-squeezing film from skin to internal layer is followed successively by 35um, 28um, 24um, 28um and 35um.

The beneficial effects of the utility model are: cryogenic freezing PP TYPE of the present utility model is five-layer co-squeezing film, five-layer co-squeezing film is comprised of four layers of PE layer and one deck barrier layer, four layers of PE layer comprise at least low temperature resistant PE layer of one deck, barrier layer has good barrier property, energy blocking oxygen and steam, low temperature resistant PE layer has stronger cryogenic freezing performance, can make the utility model preserve for a long time under cryogenic freezing condition, and retention cycle is long.

Cryogenic freezing PP TYPE of the present utility model is to be co-extruded by the organic melting of multiple barrier material, there is stronger low temperature resistant freezing performance, can guarantee the quality, fresh-keeping, protect taste, long shelf-life, also there is high temperature resistant, oil resistant, humidity, intensity high, the barrier property of its mechanical property, oxygen and steam all exceedes national test stone, also has the high transparency and pliability.

Cryogenic freezing PP TYPE of the present utility model has the feature of environmental protection, energy-conservation, low-carbon (LC), utilizes multi-layer co-extruded technology to replace MULTILAYER COMPOSITE technology, has reduced cost, has simplified production process, has reduced dissolvent residual, and environmental protection is pollution-free.

accompanying drawing explanation:

Fig. 1 is the cutaway view of a kind of cryogenic freezing PP TYPE described in the utility model.

Reference numeral is:

1---a PE layer

2---the 2nd PE layer

3---the 3rd PA layer

4---the 4th PE layer

5---the 5th PE layer.

the specific embodiment:

For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing 1, the utility model is further described, the content that embodiment is mentioned is not to restriction of the present utility model.

See Fig. 1, a kind of cryogenic freezing PP TYPE, it is five-layer co-squeezing film, and five-layer co-squeezing film is comprised of four layers of PE layer and one deck barrier layer, and four layers of PE layer comprise at least low temperature resistant PE layer of one deck.

In the present embodiment, described barrier layer is PA layer.Nylon (PA) has good barrier property, can blocking oxygen and steam.

In the present embodiment, described five-layer co-squeezing film is followed successively by a PE layer 1, the 2nd PE layer 2, the 3rd PA layer 3, the 4th PE layer 4 and the 5th PE layer 5 from skin to internal layer.The 3rd PA layer 3 is barrier layer, is arranged at the centre of five-layer co-squeezing film, can better blocking oxygen and steam.

In the present embodiment, a described PE layer 1 and described the 5th PE layer 5 are low temperature resistant PE layer.A PE layer 1 of the present utility model has good temperature resistance, wearability and sealing-strength, the 2nd PE layer 2 and the 4th PE layer 4 adopt solvent-free bonding, can effectively reduce residual solvent, environmental protection, bonding force is strong, and cost is low, also has stronger anti-puncture ability, the 3rd PA layer 3 has good barrier property, and the 5th PE layer 5 has good low temperature sealing property and puncture-resistant ability.

Another kind of the present utility model preferably embodiment is: a described PE layer 1, described the 2nd PE layer 2 and described the 5th PE layer 5 are low temperature resistant PE layer.By a PE layer 1, the 2nd PE layer 2 and the 5th PE layer 5 are set, be low temperature resistant PE layer, can improve low temperature resistant freezing performance of the present utility model.

Another kind of the present utility model preferably embodiment is: a described PE layer 1, described the 4th PE layer 4 and described the 5th PE layer 5 are low temperature resistant PE layer.By a PE layer 1, the 4th PE layer 4 and the 5th PE layer 5 are set, be low temperature resistant PE layer, can improve low temperature resistant freezing performance of the present utility model.

Another kind of the present utility model preferably embodiment is: a described PE layer 1, described the 2nd PE layer 2, described the 4th PE layer 4 and described the 5th PE layer 5 are low temperature resistant PE layer.By four layers of low temperature resistant PE layer are set, can better improve low temperature resistant freezing performance of the present utility model, the utility model can be preserved for a long time under cryogenic freezing condition.

In the present embodiment, the Thickness Ratio of described five-layer co-squeezing film from skin to internal layer is followed successively by 1.5 ~ 2:1.25 ~ 1.75:1 ~ 2:1.25 ~ 1.75:1.5 ~ 2.For making the utility model reach best result of use, the Thickness Ratio of described five-layer co-squeezing film from skin to internal layer is followed successively by 1:2.4:1.2:2.4:1.The thickness of the every one deck of described five-layer co-squeezing film can reasonably arrange as required.

In the present embodiment, the thickness of described five-layer co-squeezing film from skin to internal layer is followed successively by 20 ~ 80um, 15 ~ 65um, 20 ~ 80um, 15 ~ 65um and 20 ~ 80um.For making the utility model reach best result of use, the thickness of described five-layer co-squeezing film from skin to internal layer is followed successively by 35um, 28um, 24um, 28um and 35um.

Cryogenic freezing PP TYPE of the present utility model is five-layer co-squeezing film, five-layer co-squeezing film is comprised of four layers of PE layer and one deck barrier layer, four layers of PE layer comprise at least low temperature resistant PE layer of one deck, barrier layer has good barrier property, energy blocking oxygen and steam, low temperature resistant PE layer has stronger cryogenic freezing performance, can make the utility model preserve for a long time under cryogenic freezing condition, and retention cycle is long.

Above-described embodiment is preferably implementation of the utility model, and in addition, the utility model can also be realized by alternate manner, and any apparent replacement is all within protection domain of the present utility model without departing from the concept of the premise utility.

Claims

1. a cryogenic freezing PP TYPE, is characterized in that: it is five-layer co-squeezing film, and five-layer co-squeezing film is comprised of four layers of PE layer and one deck barrier layer, and four layers of PE layer comprise at least low temperature resistant PE layer of one deck.

2. a kind of cryogenic freezing PP TYPE according to claim 1, is characterized in that: described barrier layer is PA layer.

3. a kind of cryogenic freezing PP TYPE according to claim 2, is characterized in that: described five-layer co-squeezing film is followed successively by a PE layer, the 2nd PE layer, the 3rd PA layer, the 4th PE layer and the 5th PE layer from skin to internal layer.

4. a kind of cryogenic freezing PP TYPE according to claim 3, is characterized in that: a described PE layer and described the 5th PE layer are low temperature resistant PE layer.

5. a kind of cryogenic freezing PP TYPE according to claim 3, is characterized in that: a described PE layer, described the 2nd PE layer and described the 5th PE layer are low temperature resistant PE layer.

6. a kind of cryogenic freezing PP TYPE according to claim 3, is characterized in that: a described PE layer, described the 4th PE layer and described the 5th PE layer are low temperature resistant PE layer.

7. a kind of cryogenic freezing PP TYPE according to claim 3, is characterized in that: a described PE layer, described the 2nd PE layer, described the 4th PE layer and described the 5th PE layer are low temperature resistant PE layer.

8. according to a kind of cryogenic freezing PP TYPE described in claim 3 ~ 7 any one, it is characterized in that: the Thickness Ratio of described five-layer co-squeezing film from skin to internal layer is followed successively by 1.5 ~ 2:1.25 ~ 1.75:1 ~ 2:1.25 ~ 1.75:1.5 ~ 2.

9. according to a kind of cryogenic freezing PP TYPE described in claim 3 ~ 7 any one, it is characterized in that: the thickness of described five-layer co-squeezing film from skin to internal layer is followed successively by 20 ~ 80um, 15 ~ 65um, 20 ~ 80um, 15 ~ 65um and 20 ~ 80um.

10. a kind of cryogenic freezing PP TYPE according to claim 9, is characterized in that: the thickness of described five-layer co-squeezing film from skin to internal layer is followed successively by 35um, 28um, 24um, 28um and 35um.