CN200957935Y - Sterile packing bag film of UHT liquid - Google Patents
Sterile packing bag film of UHT liquid Download PDFInfo
- Publication number
- CN200957935Y CN200957935Y CN 200620064550 CN200620064550U CN200957935Y CN 200957935 Y CN200957935 Y CN 200957935Y CN 200620064550 CN200620064550 CN 200620064550 CN 200620064550 U CN200620064550 U CN 200620064550U CN 200957935 Y CN200957935 Y CN 200957935Y
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- ashen
- low density
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Abstract
The utility model discloses a new type UHT liquid milk asepsis package film, which is compounded by a polypropylene layer stretched in double direction and three coextruded ashen films, a printing ink layers is printed between the polypropylene layer stretched in double direction and three coextruded ashen films; in order to strengthen the compounding intensity, a level of glue layer or polypropylene is applied between the polypropylene layer stretched in double direction and three coextruded ashen films; the three the three level coextrusion ashen film is compounded by the polyethylene of a low density, the linearity low density polyethylene and the black and white color master. After being filled up by the packager, the utility model provides a lower bag breaking rate and a lower flavor than the traditional one, and the guarantee period can achieve 45 days under the normal temperature and humidity.
Description
Technical field
The utility model relates to a kind of novel UHT (instantaneous ultra high temperature sterilization) liquid milk-packing.
Background technology
At present, the packing of UHT liquid milk mainly adopts two types: one, and aseptic bag, the Lilezhen of Sweden's Lile packaging Co., Ltd; Two, three layers or five layers black and white milk of coextrusion film.The former packing cost height need use on the special purpose packaging machine of Tetrapack.The latter's toughness of material is bad, and the broken bag rate is very high.Storage time slightly length peculiar smell such as plastics flavor will appear.Foodsafety is not high.
Summary of the invention
The purpose of this utility model provides a kind of novel UHT liquid milk aseptic package bag film, and three layers of milk of integral material cost and co-extrusion black and white film is approaching, but the broken bag rate is extremely low, and other tastes in the milk of packing back are extremely light.
For achieving the above object, novel UHT liquid asepsis packaging bag film described in the utility model, it is composited by Biaxially oriented polypropylene layer and three-layer co-extruded greyish white rete, is printed with ink lay between Biaxially oriented polypropylene layer and the three-layer co-extruded greyish white rete.
In order to strengthen combined strength bination, described UHT liquid asepsis packaging bag film also has one deck glue layer or polyethylene layer between ink lay and three-layer co-extruded greyish white rete.
The low density polyethylene (LDPE) that above-mentioned three-layer co-extruded greyish white rete is formed by co-extrusion, linear low density polyethylene, the female three layers of composition of black and white.
Wherein the greyish white rete of co-extrusion is hot sealing layer and directly contacts with milk.UHT liquid asepsis packaging bag film described in the utility model can adopt the film volume supply of material, can bag on the wrapping machine of original three layers of black and white milk film of liquid milk originating firm.To seal earlier during heat-sealing and then cut-out or direct heat cut-out.
The utility model has the advantages that:
1) Biaxially oriented polypropylene adopts two-sided corona treatment, the needs that can satisfy coding on compound and the wrapping machine and seal.The used Biaxially oriented polypropylene of this product is the 10-18 micron thickness, than common polypropylene 18-28 micron better elasticity is arranged, and resists to rub, resist puncture.Guaranteeing that sack after compound does not ooze in storage and transport process does not split.
2) co-extrusion ash tunica albuginea is produced on the inflation film manufacturing machine that automatic thickness control is arranged, and good thickness deviation control and planeness are arranged, and the film smooth running on automatic filling machine after therefore compound can not occur wandering off, defective such as fold.Thereby guarantee extremely low broken bag rate.
3) the coextrusion film blowing machine blowing of device for cooling formed in co-extrusion ash tunica albuginea adopted and has, by low density polyethylene (LDPE), and linear low density polyethylene, the black and white masterbatch is formed, and taste is extremely low.The heat sealability and the puncture resistance of linear low density polyethylene are very good simultaneously.Thereby guaranteed very low broken bag rate.
4) adopt solvent-free or to extrude The tape casting compound, reduce solvent contamination, guarantee low smell.
5) seal is compound in the employing, avoids polluting packing through coming off of printing ink after the immersion of hydrogen peroxide.Printing ink adopts environment-friendly type alcohol printing ink.
6) by the selection of above-mentioned material and technology, compound good packing have very low broken bag rate and extremely low taste than three layers of traditional milk film after can on three layers the milk film wrapping machine, and under ambient temperature and moisture, the shelf-life can reach 45 days.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 described novel UHT liquid asepsis packaging bag film;
Fig. 2 is the structural representation of embodiment 2 described novel UHT liquid asepsis packaging bag films.
The specific embodiment
Embodiment 1
As shown in Figure 1, UHT liquid milk-packing film of the present utility model by 1 li seal of Biaxially oriented polypropylene layer after, be composited with greyish white rete 3 again after forming ink lay 2.The thickness of Biaxially oriented polypropylene layer 1 is generally the 10-18 micron thickness, and the thickness of greyish white rete 3 is the 20-45 micron thickness.
Concrete manufacturing process is: Biaxially oriented polypropylene prints through the lining, then through solvent-free composite machine or to extrude the good grey tunica albuginea of casting machine and blowing compound, cuts into the film volume of given size again through cutting machine.
The low density polyethylene (LDPE) 301 that wherein greyish white rete is formed by co-extrusion, linear low density polyethylene 302, female 303 three-layer thin-films of black and white are formed, above-mentioned three-layer thin-film goes out inflation film manufacturing machine by device for cooling in having three-layer co-extruded, press low density polyethylene (LDPE), linear low density polyethylene, black and white masterbatch bed thickness is blown and the greyish white rete of co-extrusion of formation three-decker than the proportioning that 1: 1: 1 or 1-2: 1-2: 1-2 sets.
Low density polyethylene (LDPE), linear low density polyethylene, black and white masterbatch enter screw rod according to the proportioning of setting after by the hopper weighing of automatic gauge, blow out by die head through behind the heating and melting, and the cooling while blowing, the tubbing slitting that blows out is rolling moulding separately into two.The control whiteness is even, and the deviation of thickness guarantees＜3%, COF＜0.2.Thereby guarantee pulsation-free operation on bottle placer.
Behind 1 li seal of Biaxially oriented polypropylene layer, behind the formation ink lay 2, be composited with greyish white rete 3 again by glue layer or polyethylene layer 4.Can increase compound bondability like this.All the other are identical with embodiment 1.
Claims (3)
1. novel UHT liquid asepsis packaging bag film, it is characterized in that: it is composited by Biaxially oriented polypropylene layer (1) and three-layer co-extruded greyish white rete (3), is printed with ink lay (2) between Biaxially oriented polypropylene layer (1) and the three-layer co-extruded greyish white rete (3).
2. by the described UHT liquid asepsis of claim 1 packaging bag film, it is characterized in that: described UHT liquid asepsis packaging bag film also has one deck glue layer or polyethylene layer (4) between ink lay (2) and three-layer co-extruded greyish white rete (3).
3. by claim 1 or 2 described UHT liquid asepsis packaging bag films, it is characterized in that: the low density polyethylene (LDPE) (301) that described three-layer co-extruded greyish white rete (3) is formed by co-extrusion, linear low density polyethylene (302), black and white mother (303) three-layer thin-film is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620064550 CN200957935Y (en) | 2006-09-20 | 2006-09-20 | Sterile packing bag film of UHT liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620064550 CN200957935Y (en) | 2006-09-20 | 2006-09-20 | Sterile packing bag film of UHT liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200957935Y true CN200957935Y (en) | 2007-10-10 |
Family
ID=38784810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620064550 Expired - Fee Related CN200957935Y (en) | 2006-09-20 | 2006-09-20 | Sterile packing bag film of UHT liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200957935Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708788B (en) * | 2009-11-26 | 2011-08-10 | 浙江大东南包装股份有限公司 | Ecological type BOPP/PP color printing food packaging film and preparation method thereof |
| CN102825874A (en) * | 2011-12-08 | 2012-12-19 | 光明乳业股份有限公司 | Ultra heat treated (UHT) liquid milk packaging film of multilayer plastic composite structure and preparation method thereof |
| CN104477509A (en) * | 2014-11-21 | 2015-04-01 | 宿州市紫金塑业有限公司 | Black and white preservative film composite package |
-
2006
- 2006-09-20 CN CN 200620064550 patent/CN200957935Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708788B (en) * | 2009-11-26 | 2011-08-10 | 浙江大东南包装股份有限公司 | Ecological type BOPP/PP color printing food packaging film and preparation method thereof |
| CN102825874A (en) * | 2011-12-08 | 2012-12-19 | 光明乳业股份有限公司 | Ultra heat treated (UHT) liquid milk packaging film of multilayer plastic composite structure and preparation method thereof |
| CN102825874B (en) * | 2011-12-08 | 2015-04-22 | 光明乳业股份有限公司 | Ultra heat treated (UHT) liquid milk packaging film of multilayer plastic composite structure and preparation method thereof |
| CN104477509A (en) * | 2014-11-21 | 2015-04-01 | 宿州市紫金塑业有限公司 | Black and white preservative film composite package |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071010 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |