CN201457955U

CN201457955U - Milk powder packaging film and packaging bag

Info

Publication number: CN201457955U
Application number: CN2009201041728U
Authority: CN
Inventors: 李甑喜; 黄二兵; 牟致强
Original assignee: Hebei Peculiar Packaging Co Ltd
Current assignee: Hebei Peculiar Packaging Co Ltd; Hebei Qite Packing Co Ltd
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-05-12
Anticipated expiration: 2019-08-21

Abstract

The utility model discloses a milk powder packaging film and a packaging bag made thereof, wherein the milk powder packaging film is of a structure of BOPET to PVC coating to VMPET to PE from outside to inside. The utility model has the advantages that the packaging film and the packaging bag are suitable for use on all kinds of high-speed packaging machines, the quality guarantee period can reach one and half years to two years, the cost is low, the residual solvent is low, the power consumption during production is small, the use is environment-friendly and the packaging film and the packaging bag are suitable for packaging all kinds of milk powder.

Description

Milk powder packaging film and packaging bag

Technical field

The utility model belongs to the packaging for foodstuff field, specifically a kind of milk powder packaging film and packaging bag.

Background technology

Along with improving constantly of people's living standard, common people's diet is more and more paid attention to nutrition, milk product contains abundant calcium with it, vitamin D, the human body required whole amino acid that grows, digestibility is up to characteristics such as 98%, become the indispensable health drink of people gradually, especially to the infant, the elderly, dairy products is their main even unique food especially, and milk powder conduct important a member wherein, with the incomparable long shelf-life of other class dairy products of its tool, drink advantage easily, occupy an important position in dairy products, the milk powder packing also becomes the important point of economic increase in packaging applications field.

At present the commercially available dried milk powder mainly contains two kinds of metal can and light plastic Soft Rolls; the canned milk powder of same quality is than packed product expensive about 30%; and because the influence of global financial crisis; what dairy industry was competed in addition increasingly sharpens, and the milk powder packing is also strengthened by the possibility that the plastics Soft Roll rules all the land thereupon.

Existing milk powder plastics Soft Roll product mainly contains four kinds of structure: PET-AL-NY-PE (biaxial stretching polyester film-aluminium foil-nylon membrane-multilayer polyethylene film), PET-AL-PE (biaxial stretching polyester film-aluminium foil-multilayer polyethylene film), PET-VMPET-PE (biaxial stretching polyester film-aluminized polyester film-multilayer polyethylene film), BOPP-VMPET-PE (biaxially oriented polypropylene film-aluminized polyester film-multilayer polyethylene film).Wherein, PET-AL-NY-PE is because resistance oxygen, moisture barrier property is good, and long shelf-life generally can reach a year and a half to two year, but cost is than higher; PET-VMPET-PE is an aluminium coated fabric, and its cost is relatively low, but its shelf-life is also shorter, generally is no more than a year and a half; PET-AL-PE infrastructure cost and shelf-life are more or less the same with PET-VMPET-PE; And for the 4th kind of BOPP-VMPET-PE structure, the resistance to heat of BOPP material itself is bad, is not suitable for using on automatic packaging machine, is mainly used to make pre-formed bags, is used for Manual Packaging.

The utility model content

The technical problems to be solved in the utility model, provide a kind of milk powder packaging film, packaging bag of BOPET-PVA coating-VMPET-PE structure, be adapted at using on the various high-speed packaging machines, shelf-life reaches a year and a half to two year, and cost is lower than the PET-AL-NY-PE structure, and dissolvent residual is low, and the production process energy consumption is little, environmental protection is fit to the various milk powder of packing.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

A kind of milk powder packaging film, for being bonded in the lamination layer structure of one, this lamination layer structure is followed successively by BOPET layer, PVA coat, VMPET layer and PE layer.

Described PE layer is the PE film composite bed of 3 layers, 4 layers or 5 layers.

The thickness of described BOPET layer, PVA coat, VMPET layer and PE layer is respectively 10-15 μ m, 1-5 μ m, 10-15 μ m, 60-90 μ m.

A kind of milk powder packing bag that above-mentioned milk powder packaging film is made, the bag wall is from outside to inside being followed successively by BOPET layer, PVA coat, VMPET layer and PE layer.

Be used for the MULTILAYER COMPOSITE color printing product of packaged food, its different layers has different technical requirementss: 1. with the direct contacted nexine of food, must have certain resistance tocrocking; If be used for automatic high speed packing, also must have good heat sealability, suitable coefficient of friction, 2. the interlayer fitness for purpose good resistance oxygen is arranged or hinder moist, not perishable with dress food in guaranteeing; 3. skin is a printed layers, requires surface property to reach that printing-ink is stable to adhere to requirement.

The milk powder packaging film of said structure provided by the present invention, packaging bag, its skin are BOPET (biaxial stretching polyester film) layer, are easy to printing, moisture barrier property is superior, the favorable mechanical performance, cold-resistant heat, the oily property of medicine can be good, are suitable as the skin of making milk powder packing bag;

Interlayer comprises PVA (polyvinyl alcohol) overlay and VMPET (aluminized polyester film) layer, and wherein PVA has good film forming, and formed film has excellent adhesion, solvent resistance, wear-resisting wiping, tensile strength and oxygen barrier performance; The PVA coating increases the oxygen resistance of product greatly, and do not add any objectionable impurities in the production process as oxidation prevention layer, can directly reclaim granulation, and is nontoxic, pollution-free; The VMPET layer has good anti-ultraviolet property, superior fragrance protectiveness, good resistance oxygen; Internal layer is the PE rete that BLOWING FILM TECHNOLOGY OF MULTI-LAYER COEXTRUSION is produced, and it is moist to have a good heat sealability, resistance tocrocking, resistance, and the suitable coefficient of friction of adjusting is conveniently packed on the automatic high speed wrapping machine.

Owing to adopted technique scheme, the utility model compared with prior art, obtained technological advance is: the effective period of food quality of adorning can reach a year and a half to two year, the manufacturing cost reduction, the production process energy consumption is little, environmental protection.Packaging film provided by the present invention and packaging bag are suitable for packing milk powder.

The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.

Description of drawings

Fig. 1 is the enlarged drawing of the cross section structure scheme drawing of the utility model embodiment 1, embodiment 2.

Among the figure: 1--BOPET layer, 2--PVA coat, 3--VMPET layer, 4--PE layer.

The specific embodiment

Embodiment 1

A kind of milk powder packaging film, for being bonded in four layers lamination layer structure of one up and down, this lamination layer structure is followed successively by BOPET layer 1, PVA coat 2, VMPET layer 3 and PE layer 4, as shown in Figure 1.

Wherein PE layer 4 is three to five layers a PE film composite bed, and BOPET layer 1, PVA coat 2, VMPET layer 3 are respectively 10-15 μ m, 1-5 μ m, 10-15 μ m, 60-90 μ m with the thickness of PE layer 4.

The technological process of producing above-mentioned milk powder packaging film is:

Embodiment 2

A kind of milk powder packing bag, its surface structure, shape are similar to the ordinary powdered milk bag, the essential distinction of itself and ordinary powdered milk bag is: make with embodiment 1 described milk powder packaging film, the bag wall is four layers the lamination layer structure that is bonded in one, from outside to inside being followed successively by BOPET layer 1, PVA coat 2, VMPET layer 3 and PE layer 4, referring to Fig. 1.

Wherein the PE4 layer is three to five layers a PE film composite bed, and BOPET layer 1, PVA coat 2, VMPET layer 3 are respectively 10-15 μ m, 1-5 μ m, 10-15 μ m, 60-90 μ m with the thickness of PE layer 4.

Claims

1. milk powder packaging film, for being bonded in the lamination layer structure of one, it is characterized in that: this lamination layer structure is followed successively by BOPET layer, PVA coat, VMPET layer and PE layer.

2. milk powder packaging film according to claim 1 is characterized in that: described PE layer is the PE film composite bed of 3 layers, 4 layers or 5 layers.

3. milk powder packaging film according to claim 1 and 2 is characterized in that: the thickness of described BOPET layer, PVA coat, VMPET layer and PE layer is respectively 10-15 μ m, 1-5 μ m, 10-15 μ m, 60-90 μ m.

4. a kind of milk powder packing bag of making of claim 1 or 2 described milk powder packaging films, it is characterized in that: the bag wall is from outside to inside being followed successively by BOPET layer, PVA coat, VMPET layer and PE layer.

5. milk powder packing bag according to claim 4 is characterized in that: the thickness of described BOPET layer, PVA coat, VMPET layer and PE layer is respectively 10-15 μ m, 1-5 μ m, 10-15 μ m, 60-90 μ m.