FIELD: package and storage; food industry.
SUBSTANCE: invention relates to packaging materials for food products subject to heating in this package, namely to infusion bags containing a substance whose infusion in the liquid is to be obtained, preferably to paper bags with tea or coffee. Technical result is achieved by the fact that the infusion bag is made of a rectangle of porous material and is provided with a spinning thread forming a loop, the tab of which is located outside the bag, and the inside of the sachet from opposite short sides of the branch of the squeegee thread meet each other along its longitudinal axis of symmetry and at the exit of the sachet each of the free ends of the squeezing yarn forms a knot, through which the other branch of the spinning filament exits out, the end of which forms a knot on the opposite side of the sachet. Infusion bag is made from a single rectangular sheet of porous material with a length-width ratio selected from a range of 3.5÷4.3:1, in the manufacture of a sachet of two rectangular sheets of porous material, the ratio of length and width in them is selected from the range of 7÷8.6:1. Ratio of the length of the squeezing yarn and the length of the sachet is selected from the range of 4÷5.5:1. Free ends of the squeezing yarn are removed from the sachet through the notch cut on each side of the sachet from the side of its end. Assembly that surrounds each of the end sides of the sachet is in the form of a ring-shaped loop with a free end of the squeezing thread wound on it, which forms an annular loop, turns, while the number of turns and the pitch between them are selected proceeding from the need to ensure a reliable fixation of the assembly, and also the degree of rigidity of the annular loop with the windings wound on it, which is required to allow the other end of the squeezing thread to pass through the center of the annular loop. Open longitudinal sections of one or two of the porous sheets intended for making the bag for infusion are connected by a welded seam. For the case of making a sachet from one porous sheet of non-weldable material, its open longitudinal sections can be joined by rolling. Label is attached to the hinge formed from the outside of the sachet by a squeegee thread. Squeezing yarn can be made of two pieces, the ends of which are not involved in the formation of the knots on the end sides of the sachet, are connected at the place covered by the label.
EFFECT: technical result is increased efficiency of pressing the liquid out of the bag for infusion and reduced likelihood of its rupture and destruction.
10 cl, 4 dwg
