WO2012144923A1

WO2012144923A1 - Packaging for a dry milk mixture

Info

Publication number: WO2012144923A1
Application number: PCT/RU2011/000413
Authority: WO
Inventors: Лев Михайлович МОГИЛЕВСКИЙ
Original assignee: Mogilevskiy Lev Mikhailovich
Priority date: 2011-04-20
Filing date: 2011-06-14
Publication date: 2012-10-26

Abstract

The device relates to the milk preservation industry, and specifically to the packaging of a dry milk mixture for feeding children and for the nourishment of pregnant women and breast-feeding mothers, and can be used in the food industry. A packaging for a dry milk mixture is proposed, the packaging comprising a rigid box (1), into which blocks (2) are placed. Each block consists of compartments (3, 4) and the compartments of each block are in the form of recesses on a film base (5). A portion of the dry milk mixture (7) is sealed in each compartment in an inert gas medium by a film covering (6). Welded seams (8) are situated around the perimeter of each compartment. Dividing elements (9) in the form of a perforation are provided on the film in the gap between the compartments. The base is formed from a three-layered material: an outer layer (10) of polyethylene terephthalate, a middle layer (11) of aluminium and an inner layer (12) of low-density polyethylene. The covering is formed from a two-layered material: an inner layer (13) of polyethylene terephthalate and an outer layer (14) of aluminium. The design of the proposed packaging increases the accuracy of measuring out the dry milk mixture while improving the hygienic storage conditions thereof.

Description

PACKAGING FOR DRY MILK

The proposed design relates to the dairy and canning industry, namely, the packaging of dry milk formula for feeding children and feeding pregnant women and nursing mothers and can be used in the food industry.

Known packaging dry nutrient mixture in a hermetically sealed bag, laid in a cardboard box.

(See V. Ulyanov. Packaging "Bag in box" in the magazine "Packaging and Label in Belarus", N ° 6/2000, p. 32).

After opening the package, each portion of the dry mixture in the amount necessary to prepare one portion of the nutrient product is removed with a measuring spoon.

The stiffness of the cardboard box protects the inner bag from damage. Putting information about the dry mix on the inner bag is not necessary, since it is present on the box. These circumstances make it possible to use thinner and cheaper material for making the bag.

The disadvantage of this package is that when the mixture is open, the hygiene conditions for storing the powder and preparing the product from it are violated.

Also known is a package for a dry milk mixture containing a rigid box in which containers formed by a multilayer film base and a multilayer film-overlay are stacked, in each of which a portion of the dry milk mixture is sealed in an inert gas medium.

(see Eurasian patent HaO 13461, B65D30 / 08, 2009)

This invention by its technical nature and the achieved result is closest to the proposed technical solution and, therefore, is taken as its prototype. According to the prototype device, each container is a flexible package consisting of a base film and a lining film, which are interconnected by a weld running along the perimeter of the package.

Each portion of the dry mix is sealed in flexible bags, which are then placed in a cardboard box.

This packaging helps to prevent contamination of the mixture after its use due to the possibility of storing the remaining portions in sealed bags.

The disadvantage of such packaging is that in each hard box, to avoid confusion during the preparation of the nutrient mixture, packages with the same amount of powder are placed. However, the feeding regimes of infants during the first six months of their life, i.e. during the period of the most intensive and regular consumption of milk powder, they change first weekly, and from the second month - monthly. Therefore, packages must contain either the same minimum servings, equal, for example, to that measured with a measuring spoon, or contain the product in an amount sufficient for repeated feeding. In the first case, the number of packages taken for feeding increases with the growth of the baby, which creates inconvenience to the user, and in the second case, a certain amount of mixture remains in the packages, requiring constant monitoring, which also creates inconvenience to the user and violates the hygienic conditions of storage of the product.

The technical result of this development is the creation of packaging for convenient portion selection of the dry milk mixture, subject to high requirements for hygienic storage conditions of the product.

The specified technical result is achieved in that in a package for a dry milk mixture containing a rigid box in which containers formed by a multilayer film base and a multilayer a film-overlay, in each of which a portion of the dry milk mixture is sealed in an inert gas medium, the containers are formed on a multilayer film base in the form of blocks with the formation of cells of the same shape, in the interval between which separation elements are applied to the film, while the depth of each cell is calculated by formula: h = mk] (k ₂ rS) ^"1 , where: g is the bulk density of the milk mixture, S is the average cross-sectional area of the cell, t = 0.004-0.005 is the mass of the minimum portion of the dry milk mixture, and k _! is the ratio of the portions - whole numbers from 1 to 20, k ₂ = 0.75-0.9 - the coefficient of fullness of the cell with a dry milk mixture.

It is permissible to put blocks of the same height into the box, with different values of the average cross-sectional area of the cell within each block.

It is also possible to put blocks of different heights in the box, with the same value of the average cross-sectional area of the cell within each block.

Guided by the recommendations on the adaptation of milk mixtures to human milk in terms of protein, fat and carbohydrate components, vitamin and mineral composition, the standards for the preparation of ready-made mixtures for feeding children of different ages are developed, shown in table 1. (Eurasian patent Patent 011075, B65D30 / 08, 2008)

Table 1

Age of the child 1-2th 3-4th 2nd 3rd 4th 5th week of the week months. month month month and older

The number of feedings in 6-7 6 5 5 5 4-5 days

The number of measured 2 3-4 4 5 6 7 tablespoons per one

feeding Since when the dry milk mixture was supplied only in boxes with a measuring spoon, the amount of the mixture for one feeding is measured by the number of conditional measuring spoons, each of which is placed with an error of 10% - 0.0045 kg. mixtures. Thus, the amount of dry milk mixture that is poured into the cell should be a multiple of the minimum portion of the dry milk mixture with a mass of m (kg) equal to 0.004-0.005

The optimal, from the point of view of correcting the diets of pregnant women and nursing mothers according to the vitamin-mineral complex, increasing the body's resistance to diseases, and forming the immune response of the child's body, is a drink prepared by diluting 11 or more measured spoons of dry mix in boiled water.

Thus, the number of measuring spoons can be even and odd. Therefore, in one package it is desirable to be able to store not only servings that are multiple to an even number of measuring spoons, but also multiples of an odd number, so that using their combination to increase the dosage accuracy and improve the hygienic conditions of storage of the mixture, eliminating the possibility of storing unused balance of the mixture in an open container.

- the volume of the powdered milk mixture filled into the bag, where:

k _t is the ratio of the multiplicity of servings - integers from 1 to 20. That is, each cell contains dry milk in the amount of a multiple of the minimum portion.

A label should be printed on the overlay film of each cell, such as on a box, which is a rectangular box. Therefore, this label should be rectangular, and its area should be such that the text information can be distinguishable and readable. From a technological point of view, it is preferable that the cells are of the correct geometric shape and have the plane of the parallel surface of the label is a rectangular cross section.

- cell volume, where: S (t ² ) is the average cross-sectional area of the cell, p (m) is the cell depth.

The dry milk mixture must be in an inert gas environment for the entire period of its storage - 24 months. The required volume of inert gas in the cell depends on its rate of leakage through the walls of the package and welds, which, in turn, depends on the material and design of the package and is determined experimentally. Therefore, the dry milk mixture occupies only part of the cell volume, that is:

VcAte = mk, / r Sh = k ₂

h = mk ^ rS) ^'1

k ₂ = 0.75-0.9 is the coefficient of the degree of fullness of the cell with a dry milk mixture. The values of this coefficient are determined experimentally and depend on the packaging design, the length and tightness of the welded joints and the gas permeability of the packaging material. Therefore, multilayer materials are used in the design of the package, allowing to reduce the value of this coefficient, for a more rational use of the useful volume of the package.

The accuracy of the calculations is + 10%.

The use in the formula describing the fullness of the cell with a dry milk mixture as one of the parameters of the average cross-sectional area of the cell expands the possibilities of designers in selecting the values of the linear dimensions of the cell, so that for any combination in the same package equal or different mass portions of the mixture outside depending on whether these cells are located on one or on different blocks, the useful volume of the box is used to the maximum.

In FIG. 1 shows the packaging of blocks with cells of different cross-sectional areas in the box (cover removed). In the top row in the ridge the corner of the leftmost cell on an enlarged scale shows the multilayer base material, the rightmost cell with a bent and layered foam overlay, and the middle cells of this and the lower rows are shown with the removed overlay film.

Figure 2 presents a section aa of the box in figure 1 with blocks of cells of rectangular cross section of the same height.

Figure 3 shows a section AA of the box in figure 1 with blocks of cells of a trapezoidal section of the same height.

Figure 4 shows the packaging of blocks with cells of the same cross-sectional area in the box (cover removed). In the upper row, the leftmost cell is shown with the overlay film removed

Figure 5 presents a section bb of the box in figure 4. with blocks of different heights.

According to the invention, a three-layer film material based on polyethylene terephthalate is used, with the middle layer made of aluminum with a thickness of 7 μm and the inner layer of low density polyethylene with a thickness of 70 μm, as well as a two-layer material - polyethylene terephthalate with an aluminum coating.

Such materials prevent the penetration of moisture into the bag and the evaporation of inert gas from the bag, which prevents the appearance of harmful bacteria in the dry milk mixture for 24 months, i.e. the entire shelf life. (Sukharev L.A., Yakovlev BC Polymers in the production of packaging materials. M., DeLi print, 2005 p.132). A single portion of the dry milk mixture is sealed in cells in the atmosphere of gaseous preservatives: nitrogen or carbon dioxide on automatic filling machines such as AT-6, AT-8, manufactured by Teploform, or other filling and packaging machines equipped with dispensers. (Chernov M.E. Packing of bulk materials. M. DeLi, 2000, p. 28). The packaging design is illustrated by examples.

Example 1

The packaging for the dry milk mixture (Fig. 1) contains a rigid cardboard box 1 in which the blocks 2 are stacked. Each block consists of small cells 3, for the minimum portion of the dry milk mixture (t = 0.0 and large cells 4, for double servings of milk powder

eggs, each block is formed in the form of recesses of rectangular cross section (Fig. 2) on the basis of 5. In each cell, a portion of the dry milk mixture 7 is sealed with an inert gas film 6 (bulk density of the milk mixture is g = 625 kg / m ³ , coefficient k ₂ = 0.8). Welds 8 are located around the perimeter of each cell. In the gap between the cells on the film applied separating elements 9 in the form of perforations. The base is made of a three-layer material: the outer layer 10 is polyethylene terephthalate, the middle layer is 11 aluminum, and the inner layer 12 is low density polyethylene. The overlay is made of a two-layer material: the inner layer 13 is polyethylene terephthalate, and the outer layer 14 is aluminum. The cells in each package differ in size of the average cross-sectional area S, while having the same shape and depth h (Fig. 2, 3).

For recognition of the text on the label (not shown in the drawing), the linear dimensions a and b of the cell are 0.05x0.025m. Accordingly, the cross-sectional area S of the cell in a plane parallel to the lining plane is 0.00125m ² .

Cell depth:

h = mk ₁ (k ₂ rS) ^", = (0.005xl) :( 0.8x625x0.00125) = 0.005: 0.625 = 0.008m

Based on the fact that to maximize the use of the useful volume of the box, the depth of all the cells of the block should be the same, and from a technological point of view, for the convenience of forming cells on the basis of the length of one of the sides of a small cell should be equal to the length of one of sides of the larger cell, the size of the sides of the cell for a double portion of the dry milk mixture will be 0.05x0.05m.

The packaging of the dry milk mixture 7 in cells 3, 4 of block 2 is carried out at atmospheric pressure in a nitrogen atmosphere at the same time as forming the cells on a tape basis 5 and sealing them with a tape film - overlay 6 by heat sealing using a filling and packaging machine, which also inflicts perforation 9 between cells.

The three-layer base material allows you to store the dry milk mixture for the entire warranty period - 24 months, while using a layer of polyethylene terephthalate 10 provides good cell stability, an aluminum layer 11 protects the stored product from moisture, and the inner layer 12 of low density polyethylene ensures reliability and tightness welded joints with an inner layer of 13 film-linings made of polyethylene terephthalate. The outer aluminum layer 14 of the film-lining, allows high-quality printing of pictures and label text.

The width of the base tape is selected so that it fits three cells. The length of the block is regulated by cutting the tape by perforating every third row of cells. Labels for each cell are pre-printed on the surface of aluminum, so that they are in the field formed by welds that seal the cell. Then the blocks are placed in a cardboard box 1, on the rectangular cover of which (not shown in the drawing), a label is printed, the same as on each film-pad of the cell block.

Each cell is easily broken out of the block by perforation and opened by tearing off the lining film along the weld. The dry milk mixture is poured into the cooked dishes and mixed with water in the amount required to prepare a portion of the nutritious product. Example 2

The packaging for the dry milk mixture has the same design, is assembled and disassembled in the same way as in example 1. The difference is that the cells of each block are formed in the form of recesses of the trapezoidal section (Fig. 3) on a film-base. Accordingly, the average cross-sectional area S of the cell in the plane parallel to the lining plane is the arithmetic mean sum of the areas of the upper and lower base of the trapezoid. The calculation of cell sizes is the same as in example 1.

Example 3. The packaging for the dry milk mixture (Fig. 4) has the same design, is assembled and disassembled as in Example 1. The difference is that the cells within each block have the same dimensions, but in different blocks, laid in a box, the cells differ from each other in depth (Fig. 5). Packaging in blocks with cells with a depth of n = 0.008 m contains the minimum servings of dry milk powder equal in weight to one conditional spoon or 0.005 kg, and in blocks with cells with a depth of 21 m = 0.016 m - double servings of dry milk mixture. Moreover, in all blocks in this package, the areas and linear dimensions of the cell cross-section are the same (S = 0.00125M ² а = 0.05 and b = 0.025m).

The proposed design allows, to the maximum possible use of the useful packaging volume, to store both identical and different in mass portions of the dry milk mixture, and in accordance with the standards for the preparation of ready-made mixtures, prepare them using disposable packaging of various capacities without residue. This not only improves the hygienic conditions of storage of the product, but also increases the accuracy and reliability of its dosage.

Claims

USEFUL MODEL FORMULA

1. A package for a dry milk mixture containing a rigid box in which containers formed by a multilayer film base and a multilayer film-overlay are stacked, in each of which a portion of the dry milk mixture is sealed in an inert gas medium, characterized in that the containers are formed on a multilayer film basis in the form of blocks with the formation of cells of the same shape, in the interval between which separation elements are applied to the film, while the depth of each cell is calculated by the formula:

where: g is the bulk density of the milk mixture, S is the average cross-sectional area of the cell, t = 0.004-0.005 is the mass of the minimum portion of the dry milk mixture, ki is the ratio of the multiplicity of servings are integers from 1 to 20, and ₂ = 0.75- 0.9 coefficient of fullness of the cell with a dry milk mixture.

2. Packaging for the dry milk mixture according to claim 1, characterized in that the boxes of the same height are stacked in the box at different values of the average cross-sectional area of the cell within each block.

3. Packaging for the dry milk mixture according to claim 1, characterized in that the boxes of different heights are stacked in the box, with the same value of the average cross-sectional area of the cell within each block.