CN203282782U

CN203282782U - Plateau bag packaging film

Info

Publication number: CN203282782U
Application number: CN2013203041409U
Authority: CN
Inventors: 鲍祖本; 潘健; 张和平; 汪来胜; 胡鸿波; 胡继超
Original assignee: Huangshan Novel Co Ltd
Current assignee: Huangshan Novel Co Ltd
Priority date: 2013-05-29
Filing date: 2013-05-29
Publication date: 2013-11-13
Anticipated expiration: 2023-05-29

Abstract

The utility model provides a plateau bag packaging film, which is structurally composed of BOPP (biaxially-oriented polypropylene), extruded PE (poly ethylene), VMPET (vacuum metalized polyester) and PE (polyethylene). The thickness of the BOPP layer ranges from 18-20 micrometers, the thickness of the extruded PE ranges from 10-15 micrometers, the thickness of the VMPET layer ranges from 10-15 micrometers, and the thickness of the PE layer ranges from 25-35 micrometers. The PE layer is composed of a corona layer, a middle layer, and a heat seal layer. The reasonable composite structure of the utility model enhances the impact resistance and pressure resistance of gas flush packaging, thus meeting general index requirements, and also meeting the requirement for resisting destruction generated by atmospheric pressure difference of plain areas and plateau areas.

Description

A kind of plateau packet packaging film

Technical field

The utility model relates to packaging field, particularly the plateau packet packaging film.

Background technology

Grocery trade is the rising industry of 21 century, but improving constantly and, to the pay attention to day by day of health, to the quality to food and the relevant packaging for foodstuff of safety, higher requirement will be arranged along with people's quality of life.The varieties of food items security incident that particularly again and again exposes in the recent period, the exposure of some enterprise of illegal businessman violation operation phenomenons, foodsafety has caused people's common concern especially, and is also more harsh to the requirement of packaging material for food.

In recent years, the enriching constantly of food variety, supporting packing also will become more diverse with it.As the crisp friable food product that occurs on present market, dilated food, the easy food that lumps, the yielding oil food of walking, or the food etc. that has sharp corners can puncture packaging bag just must use vacuumizing-inflating packing.It has the unrivaled advantage of other packing.

And China is vast in territory, and there are different separately geography and climatic characteristic in many zones, and this has just determined the different demands to packaging material.Such as in China highlands, because height above sea level and the plains region air pressure of uniqueness has formed larger pressure reduction, so also more special to packing.114 pages of " Packaging Engineering " magazine first phases in 2007 have been delivered the article of " Influence of Air Pressure Change on Charge Package " that Wu Yanye, the Wang Xiaofang of one piece of effluent south University of Science and Technology write, analyzed height above sea level and the impact of air pressure change on gas flush packaging in article, roughly listed 5 problems: bag 1, rises; 2, packaging material performance change; 3, absciss layer; 4, the calculation deviation of shelf-life; 5, foodsafety descends.

On China market, the gas flush packaging of existing routine is only applied under condition under normal pressure difference, and easily produces the spalling phenomenon in the transportation storage process.When running into the packaging bag inside and outside differential pressure when excessive, the phenomenons such as explosion spalling more easily occur, affect greatly the wholesomeness of packing content thing, be directly connected to the healthy of consumer, and produce huge substandard products waste.Product after region of no relief carries out gas flush packaging, while being transported to the relatively low plateau district of air pressure,, because atmospheric variation makes gas expansion in packing, carries out inflation to packaging bag again, makes sack bale broken occur.If reduce the aeration quantity of region of no relief, there will be again more crisp content can not receive protection, and crushed.Therefore, develop and can meet general index request, and it is very necessary to meet the packaging material that destructiveness that anti-this atm difference produces requires.

The utility model content

The technical problems to be solved in the utility model is to provide and a kind ofly can meets general index request, can meet again the plateau packet packaging film that destructiveness that the atm difference in anti-region of no relief and plateau district produces requires.

The utility model solves the problems of the technologies described above by the following technical solutions: a kind of plateau packet packaging film, its material-structure is BOPP(Biaxially Oriented Polypropylene ", bidirectional stretching polypropylene film)/crowded PE/VMPET(polyester aluminizer)/the PE(polyethylene).

The thickness range of BOPP layer is 18-20 μ m, and the thickness range that squeezes PE is 10-15 μ m, and the thickness range of VMPET layer is 10-15 μ m, and the thickness range of PE layer is 25-35 μ m.

Wherein internal layer PE layer adopts the structure formula of innovation, and concrete, described PE layer is comprised of corona layer, intermediate layer, hot sealing layer.The thickness range of hot sealing layer is 8-11 μ m, and the thickness range in intermediate layer is 8-11 μ m, and the thickness range of hot sealing layer is 9-13 μ m.

Wherein the corona layer adopts the LLDPE(LLDPE), be to consider that packaging film need have physical and mechanical properties preferably, promote withstand voltage properties, the anti-impact Zhou Xingneng of packing.LLDPE can adopt and raise son 7042.

Intermediate layer is by the LDPE(low density polyethylene (LDPE)) and the LLDPE(LLDPE) form, wherein the weight ratio of LDPE and LLDPE is 1:1 ~ 1:3, what intermediate layer was selected is the high strength easy processing resin;

Hot sealing layer comprises the LDPE(low density polyethylene (LDPE)), metallocene PE, each weight proportion that forms is 1:1 ~ 2:1, hot sealing layer is also allocated slipping agent and opening agent into, the weight of slipping agent and opening agent accounts for the percentage of hot sealing layer gross weight: 1 ~ 3%.Because packaging is the various content of situation, especially for the powder packing, the absorption of static, all some is polluted by content to make finalization area.Therefore, must have good antifouling property and hot sticky performance in the internal layer heat-sealing film, therefore the innermost layer of film should be selected all good metallocene PEs of resistance tocrocking and thermal viscosity, SP0510 for example, can make the client obtain higher heat seal strength when lower heat-sealing temperature or higher package speed.

The high-intensity resin formula of PE film itself, very high peeling force make VMPET firmly be combined with the PE film, are synchro-draws when heat-sealing destroys, and greatly improve heat seal strength.

The production technology of above-mentioned plateau packet packaging film, specifically comprise the steps:

Step 1: raw material BOPP film, by normal technological process printing, forms the BOPP print film;

Step 2: raw material PET aluminium coated film forms VMPET;

step 3: prepare internal layer PE film, adopt existing technology to get final product, the PE plastic pellet adds the extruder hopper to become the PE melt by heater and extruder effect, be extruded as tube through annular die head, tube is after leaving die orifice, be filled with a certain amount of compressed air from the die head centre bore, it is propelled the price of into the blister film, simultaneously again through the cooling typing of vane cooling air, rise to certain distance through the draw-gear traction, by collapser breath bubble folder partially, press from both sides and hold together to form duplicature by carry-over pinch rolls afterwards, outer surface through corona unit corona film, batch as PE film volume by wrap-up trimming burst afterwards,

step 4: extrude compound, adopt two extruders, the BOPP print film of step 1 preparation is placed in the position that extruder one is put, the VMPET of step 2 preparation is placed in the position that extruder two is put, insert the PE pellet in extruder die head, this PE pellet uses existing general PE to get final product, PE is extruded in the middle of BOPP and VMPET, extrude compound, form the composite construction that BOPP/ squeezes PE/VMPET, it is pure 955 resins that extruder one is put resin used, thickness is 6-8 μ m rice, it is LDPE resin and the polar resin blend good with its compatibility that extruder two is put resin used, thickness is 4-12 μ m rice, the resin of two extruders is combined with the aluminium lamination of VMPET, and the crowded coverlay pre-coating glue at BOPP, polar resin weight accounts for extruder two and puts the 5%-20% of resin used, glue can be selected the AC agent, monocomponent polyurethane glue or two-component polyurethane adhesive water,

Step 5: the PE film of step 3 preparation is placed in the dried position of putting of answering a pager's call, the composite construction that the BOPP/ of step 4 preparation is squeezed PE/VMPET is placed in dried two positions of putting of answering a pager's call, carry out dry type compound, form BOPP/ and squeeze the PE/VMPET/PE compound die, select two-component polyurethane adhesive water while doing again,, as the high SY-03 of alliance, control spread scope 2.2-2.8g/m2.Spread: 2.2-2.8g/m2,, the dry type compound tense carries out tension force to be controlled, controlling purpose is to make composite membrane towards PE film volume, one puts tension force 0.1-0.12Mpa, controlling party to: reduce; Two put tension force 0.15-0.21 Mpa, controlling party to: increase; Drying tunnel tension force 7-9kgf, controlling party to: reduce.

The key technical indexes of this plateau packet packaging film sees the following form:

The utility model has the advantage of: the rational composite construction of this Project Product, strengthened impact resistance and the withstand voltage properties after the gas flush packaging, can meet general index request, can meet again the destructive requirement of the atm difference generation in anti-region of no relief and plateau district, shortened the packing sealing time, ratio of briquetting and the packaging efficiency of product have been improved, reduce or avoid the bale broken that causes due to the undesirable element in the packed and transported storing process to reveal, overcome in gas flush packaging in the past because the inadequate time of bonding dynamics is partially long, caused the low wretched insufficiency of packaging efficiency.Simultaneously,, due to the unique design of withstand voltage poor function, greatly reduced the packing scrappage, even still can effectively guarantee the disposable qualification rate of packed products in the situations such as the collision that is squeezed.Not only saved packing cost, reduce economic loss, and effectively protection package has been content-filled., because it has excellent compressive property except being applied to food, also be widely used in the packing of cosmetics, meticulous instrument, electronic unit, accurate spare and accessory parts.

Description of drawings

Fig. 1 is the composite junction composition of the utility model plateau packet packaging film.

Fig. 2 is the production technology figure of the utility model plateau packet packaging film.

Fig. 3 is the extrusion composite technology schematic diagram in the production technology of the utility model plateau packet packaging film.

The specific embodiment

Embodiment one

See also shown in Figure 1ly, the utility model plateau packet packaging film is that BOPP/ squeezes the PE/VMPET/PE structure of composite membrane, and the thickness of BOPP layer is 19 μ m, and the thickness that squeezes the PE layer is 13 μ m, and the thickness of VMPET layer is 13 μ m, and the thickness of PE layer is 30 μ m.

The formula of internal layer PE is:

Corona layer: 100Kg raises son 7042;

Intermediate layer: 50Kg150BW+50Kg1002YB;

Hot sealing layer 50Kg Yanshan Mountain 100AC+25KgSP0510+1Kg10090-K+1Kg AB20LD+0.2Kg 100991-K.

The thickness of three layers of corona layer, intermediate layer and hot sealing layer is respectively 9 μ m, 9 μ m, 12 μ m.

See also shown in Figure 2ly, the production technology of above-mentioned plateau packet packaging film, specifically comprise the steps:

Step 2: raw material PET aluminium coated film forms VMPET;

Step 3: prepare internal layer PE film, adopt existing technology to get final product;

Step 4: extrude compound, adopt two extruders, as shown in Figure 3, the BOPP print film of step 1 preparation is placed in the position that extruder one is put, the VMPET of step 2 preparation is placed in the position that extruder two is put, insert the PE pellet in extruder die head, PE is extruded in the middle of BOPP and VMPET, extrude compoundly, form BOPP/ and squeeze the composite construction of PE/VMPET, extruder one is put with pure 955 resins, thickness 7 μ m, extruder two is put and is used 85%955+15%EAA5050, thickness 8 μ m, and the resin that extruder two is put is combined with the aluminium lamination of VMPET;

Step 5: the composite construction that the BOPP/ of the PE film of step 3 preparation and step 4 preparation is squeezed PE/VMPET is done again, forms BOPP/ and squeezes the PE/VMPET/PE compound die.

Embodiment two

Described BOPP/ squeezes the PE/VMPET/PE structure of composite membrane, and the thickness of BOPP layer is 18 μ m, and the thickness that squeezes the PE layer is 15 μ m, and the thickness of VMPET layer is 15 μ m, and the thickness of PE layer is 25 μ m.

The formula of internal layer PE is:

Corona layer: 100Kg raises son 7042;

Intermediate layer: 50Kg150BW+100Kg1002YB;

Hot sealing layer 50Kg Yanshan Mountain 100AC+25KgSP0510+1Kg10090-K+1Kg AB20LD+0.6Kg 100991-K.

The thickness of three layers of corona layer, intermediate layer and hot sealing layer is respectively 8 μ m, 8 μ m, 9 μ m.

Step 2: raw material PET aluminium coated film forms VMPET;

Step 4: extrude compound, adopt two extruders, the BOPP print film of step 1 preparation is placed in the position that extruder one is put, the VMPET of step 2 preparation is placed in the position that extruder two is put, insert the PE pellet in extruder die head, PE is extruded in the middle of BOPP and VMPET, extrude compound, form the composite construction that BOPP/ squeezes PE/VMPET, extruder one is put with pure 955 resins, thickness 6 μ m, and extruder two is put and is used 85%955+15%EAA5050, thickness 12 μ m, the resin that extruder two is put is combined with the aluminium lamination of VMPET;

Embodiment three

Described BOPP/ squeezes the PE/VMPET/PE structure of composite membrane, and the thickness of BOPP layer is 20 μ m, and the thickness that squeezes the PE layer is 10 μ m, and the thickness of VMPET layer is 10 μ m, and the thickness of PE layer is 35 μ m.

The formula of internal layer PE is:

Corona layer: 100Kg raises son 7042;

Intermediate layer: 50Kg150BW+150Kg1002YB;

Hot sealing layer 25Kg Yanshan Mountain 100AC+25KgSP0510+1Kg10090-K+1Kg AB20LD+1Kg 100991-K.

The thickness of three layers of corona layer, intermediate layer and hot sealing layer is respectively 11 μ m, 11 μ m, 13 μ m.

Step 2: raw material PET aluminium coated film forms VMPET;

Step 4: extrude compound, adopt two extruders, the BOPP print film of step 1 preparation is placed in the position that extruder one is put, the VMPET of step 2 preparation is placed in the position that extruder two is put, insert the PE pellet in extruder die head, PE is extruded in the middle of BOPP and VMPET, extrude compound, form the composite construction that BOPP/ squeezes PE/VMPET, extruder one is put with pure 955 resins, thickness 8 μ m, and extruder two is put and is used 85%955+15%EAA5050, thickness 4 μ m, the resin that extruder two is put is combined with the aluminium lamination of VMPET;

The foregoing is only the preferred embodiment that the utility model is created; in order to limit the utility model, do not create; all any modifications of doing within spirit that the utility model is created and principle, be equal to and replace and improvement etc., within all should being included in the protection domain that the utility model creates.

Claims

1. plateau packet packaging film, it is characterized in that: its structure is the BOPP(bidirectional stretching polypropylene film)/squeeze PE/VMPET(polyester aluminizer)/the PE(polyethylene).

2. plateau as claimed in claim 1 packet packaging film, it is characterized in that: the thickness range of BOPP layer is 18-20 μ m, and the thickness range that squeezes PE is 10-15 μ m, and the thickness range of VMPET layer is 10-15 μ m, and the thickness range of PE layer is 25-35 μ m.

3. plateau as claimed in claim 1 packet packaging film, it is characterized in that: described PE layer is comprised of the corona layer, intermediate layer, the hot sealing layer that set gradually.

4. plateau as claimed in claim 3 packet packaging film, it is characterized in that: the thickness range of hot sealing layer is 8-11 μ m, and the thickness range in intermediate layer is 8-11 μ m, and the thickness range of hot sealing layer is 9-13 μ m.

5. plateau as claimed in claim 1 packet packaging film, it is characterized in that: the thickness of BOPP layer is 19 μ m, and the thickness that squeezes the PE layer is 13 μ m, and the thickness of VMPET layer is 13 μ m, and the thickness of PE layer is 30 μ m.

6. plateau as claimed in claim 1 packet packaging film, it is characterized in that: the thickness of BOPP layer is 18 μ m, and the thickness that squeezes the PE layer is 15 μ m, and the thickness of VMPET layer is 15 μ m, and the thickness of PE layer is 25 μ m.

7. plateau as claimed in claim 1 packet packaging film, it is characterized in that: the thickness of BOPP layer is 20 μ m, and the thickness that squeezes the PE layer is 10 μ m, and the thickness of VMPET layer is 10 μ m, and the thickness of PE layer is 35 μ m.