RU2687313C1 - Package for loose and liquid products with inner container and outer package with tearable thread - Google Patents

Abstract

FIELD: package and storage.

SUBSTANCE: package comprises inner container for product storage and outer package with top and bottom transverse seams. Inner container length is smaller than outer package. Inner container is made in the form of a tube, the length of which is less than the length of the outer package, on the total width of transverse seams. Wall ends of inner container are tightly compressed by walls of outer package when crosswise seams are formed. Outer package is equipped with a tearable thread.

EFFECT: invention provides longer storage life of stored products.

1 cl, 4 dwg

Description

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The technical field to which the invention relates.

Sugar, confectionery and food industry, medicine.

The level of technology.

Currently, there is a package of US 5518119 A with an inner container and an outer bag of heat-sealable material in which the inner container is an envelope folded in a parallelepiped, while there is no tightness of the inner container in the outer bag limit, which causes condensation on the outer side of the inner container during storage, which indicates a change in the composition of the product and, consequently, a decrease in shelf life. In addition, in the outer bag, there is sticking air, which also helps to reduce the shelf life of products, since the oxygen contained in it promotes their oxidation, and water vapor reduces the flowability of hygroscopic products.

Disclosure of the invention.

The essence of the invention lies in the fact that this method allows sealing the inner container by squeezing its walls with the walls of the outer bag during the formation of transverse seams, while a vacuum is created in the inner container and in the outer bag, which significantly increases the shelf life of the products. The advantage of this type of packaging is that the opening of the inner container occurs automatically after opening the outer bag. The package consists of an inner container (1) and an outer bag with a bursting thread (2), which divides the outer bag into a lower one (3) and an upper one (4) [Fig. one]. Inner container (1) [FIG. 2] is designed to store the product .. The container is a thin-walled tube of material, similar in characteristics to a tube of several densely folded layers of wax paper. The outer package is made of a material on a heat sealable base [Fig. 3]. First, a longitudinal seam (5) is formed on the outer bag, then a container is inserted and the lower part of the outer bag together with the lower part of the container is compressed by an external force, and then the lower seam (6) is formed. Compression is necessary to create better conditions for more reliable welding of the seam and to create a stable deformation, which prevents the movement of the product in the package. The design of the upper (7) and lower seams (6) is the same and is presented in [Fig. four]. The container does not enter the seam area, the lower part of the container is simply compressed along with the walls of the outer bag with an external force that continues to hold the package until the outer bag is completely sealed. After the lower seam has been formed, the container is filled with the product, but not completely, but some reserve of free space is created in order to prevent the product from being ejected with further compression and at the same time excess air has been removed. Then the upper part of the package is compressed together with the upper part of the container by external force and the formation of the upper seam is made. The upper part of the container in the area of the seam does not go and does not weld, but only tightly compressed by external force. After the termination of the external compressive force, the upper part of the container begins to straighten under the action of elastic forces, but the walls of the external package in the region of the seam prevent it from opening completely and a vacuum is formed in the volume of the internal container. After that, an external force is removed from the bottom of the bag, which leads to the straightening of the lower part of the container and to the strengthening of the vacuum. After the outer package is ruptured with a bursting thread and the upper part of the package is removed, the container walls are released from the compressive action of the walls of the external package and the upper part of the container is opened under the action of elastic forces. The product is discharged either by its own weight when tipping the package, or by extrusion.

The implementation of the invention

The inner container is made of a material similar to waxed paper, tightly rolled into a tube in several layers, and has sufficient elasticity to create a vacuum after sealing the seams and removing the external compressive force, and after breaking the outer package with a tensile thread and removing the upper part of the package, it formed enough steady opening for a free exit of a product. The tightness of the lower and upper parts of the container is ensured only by compressing the walls of the outer package after the formation of transverse seams.

The container is held in the lower part of the package due to friction against the walls of the package. The length of the container is less than the length of the outer package by the total width of the transverse seams. The container circumference is such that it allows it to effortlessly enter the package in an empty state, but has some friction in the filled state.

The outer bag is made of heat sealable material. It has one longitudinal and two transverse seams. In the area of the upper transverse seam inside the package, a bursting thread is applied. The explosive thread is applied before the formation of a vertical seam and has a free end for grip. The root end of the thread (8) [FIG. 3] is fixed to the top of the outer package.

Neither the lower nor the upper seams of the outer bag capture the container, they only tightly close the tip of the container, therefore tearing off the upper part of the bag does not require significant effort.

Brief Description of the Drawings

FIG. 1. Packaging before opening the package.

The dotted line shows the position of the container in the package with a bursting thread.

FIG. 2. Packaging after opening the package.

The upper part of the bag was removed and the container exit opened in its place.

FIG. 3 Packaging design.

The wall thickness of the inner container selects the required elasticity of the container.

FIG. 4 Packaging design in the area of the seam.

The arrows indicate the direction of the compressive force before welding the seam.

Claims (1)

A package containing an inner container for storing the product and an outer bag with upper and lower transverse seams, the length of the inner container is less than the outer bag, characterized in that the inner container is designed as a tube whose length is less than the length of the outer bag by a total width transverse seams, the tip of the walls of the inner container tightly compressed by the walls of the outer package during the formation of transverse seams, the outer package is equipped with a torn thread.

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