RU210588U1 - SEAMLESS TAPE BAG FOR BOXES - Google Patents

Abstract

Seamless band bag for boxes is designed for manual packaging and transportation of rectangular boxes, for example, for pizza. In the manufacture of the bag, the film sleeve is either cut longitudinally into two half-sleeves, or cut on one side into a half-sleeve, the half-sleeve is cut transversely into polyethylene sheets folded in half, cut-out handles and holes for fixing the boxes are cut out, and the length of the bag in the spread is two widths of the half-sleeve. The bag is made seamless, the holes have the shape of a trapezoid with rounded corners, while the ratio of the value of the lower base of the trapezoid to the width of the bag is 0.45-0.8, and the ratio of the distance between the holes to the width of the bag is 0.8-1.5, the length handle is 70-120 mm. The technical result of using the proposed utility model is to increase the reliability of the bag when used, while improving the appearance and increasing the capacity without wasting material. 1 w.p. f-ly, 5 ill.

Description

The utility model relates to devices for packing and transporting, preferably by hand, any products, in particular rectangular boxes, such as pizza.

Known package for carrying, made by forming a plastic material in a film sleeve, followed by cutting the packaging of the bottom of the package with a weld using a hot knife, cutting the neck and handles of the package at the final stage (see patent RU No. 123396, B65D 30/10, 27.12.2012 ).

This carrying bag does not provide the necessary reliability due to the presence of a welded seam on the supporting surface of the carrier.

A carrying device is known, containing a support element for installing a portable load on it, for example, a rectangular box, and two loop-shaped rods connected at the ends to the support element, made with the possibility of repeated closing with the formation of support sections for the portable load, and handles for the user's hand, in this case, the supporting element and the rods are made of a single panel of household polyethylene (see patent RU No. 163940, B65D 30/10, A45F 5/00, 08/20/2016).

This carrying device does not provide the necessary strength and reliability in operation and is not technologically advanced in manufacturing, since an extra technological operation is required - the formation of a weld.

The closest to the proposed utility model in terms of technical essence is a tape carrier for boxes, which contains a polyethylene sheet made of high pressure polyethylene, or medium pressure polyethylene, or low pressure polyethylene, with holes for fixing the box and cut handles located above the holes for fixing the box (see patent RU No. 200204, B65D 30/10, A45F 5/00, 10/13/2020).

The known tape carrier for boxes does not provide the necessary reliability due to the presence of a weld on the supporting surface of the carrier, which, in addition, deforms the surface of the carrier's polyethylene web, deteriorates its appearance and reduces capacity.

The technical problem to be solved by the proposed utility model is the creation of a seamless belt bag for carrying boxes, which provides the necessary reliability when used, while improving its appearance and increasing its capacity without wasting material.

The technical result achieved by using the proposed utility model is to increase the reliability of the bag during use while improving the appearance.

The specified technical result is ensured by the fact that in a bag of tape seamless for a box containing a polyethylene sheet made with holes for fixing the box and cut handles, the polyethylene sheet is made in the form of a single tape, on which there are holes for fixing the box and cut handles, and holes for fixing the box have the shape of a trapezoid with rounded corners and are located at a distance from each other, while the ratio of the distance between the holes for fixing the box to the width of the bag is 0.8-1.5, the ratio of the lower base of the trapezoid to the width of the bag is 0.45 -0.8, and the horizontal length of the cutting handle is 70-120 mm.

The belt bag can be made with two holes for fixing the box and two cut handles.

The utility model is illustrated by drawings, where:

in fig. 1 shows a diagram of the longitudinal cutting of a film sleeve into two half-sleeves;

in fig. 2 shows a diagram of cutting a film sleeve from one side (on the right) into one half-sleeve;

in fig. 3 shows a seamless tape bag for boxes, a general view folded in half;

in fig. 4 shows a stack of seamless band bags for boxes;

in fig. 5 shows a seamless tape bag for boxes in expanded form.

A seamless tape bag for boxes consists of a polyethylene web 1 made from either high-pressure polyethylene (LDPE), or low-pressure polyethylene (HDPE), or medium-pressure polyethylene (PSD). In addition, a seamless band bag for boxes can be made of non-woven materials or paper.

The width L of the polyethylene film sleeve is equal to the length of the bag L1 of the seamless tape for a box folded in half, the width of the bag is L2.

Polyethylene sheet 1 is made in the form of a single tape, the length of which is L3 and on which there are two cut handles 2 and two holes 3 for fixing the boxes.

Holes 3 for fixing the box have the shape of trapezoids with rounded corners, the value of the lower bases of which is L4, while the ratio of the lower base of the trapezoid to the width of the bag L4/L2 is 0.45-0.8.

Holes 3 for fixing the box are located at a distance L5 from each other, while the ratio of the distance between the holes for fixing the box to the width of the bag L5/L2 is 0.8-1.5.

Making holes 3 for fixing the box in the shape of a trapezoid with rounded corners, the location of the holes 3 at a distance L5 from each other, as well as observing the ratios of L4/L2, L5/L2 within the specified limits, allow you to evenly distribute the load from the weight of the boxes, thereby maintaining strength bag and increasing its reliability during operation.

The cut handles 2 are rectangular with rounded corners, and they can be extended horizontally and bent, for example, in a form close to the shape of a "banana", while the horizontal length h2 of the cut handle 2 is 70-120 mm.

This design of the cut-out handles 2 and holes 3 for fixing boxes that do not contain sharp corners, which are points of increased stress of the material and its rupture under load, makes it possible to increase the reliability of bags of tape seamless boxes for carrying, is optimal for any size of a human hand and for different sizes. boxes used, for example, for pizza, and also increases capacity without increasing material consumption.

Examples of making a seamless tape bag for carrying boxes.

Example 1

A seamless tape bag for a box is made by extruding polyethylene to obtain a polyethylene film sleeve, which is then cut on one side, thereby obtaining a half-sleeve (Fig. 2), while the width L of the polyethylene film half-sleeve is equal to the length of the tape bag for the box L1, folded in half.

Then the film half-sleeve is cut into polyethylene sheets 1 folded in half, for example, with a length L1=650 mm and a width L2=200 mm, while the width L of the polyethylene film half-sleeve is equal to half the length L3 of the tape bag for the box in turn (Fig. 5).

Polyethylene sheets 1 folded in half are stacked in stacks of several pieces and cut-out handles 2 and holes 3 for fixing boxes are cut out, having the shape of a trapezoid with rounded corners, the width of the lower base of which is L4=105 mm, the distance between holes 3 for fixing boxes L5=180 mm, and the length of the cutting handle h2=80 mm.

Example 2

A seamless tape bag for boxes is made by extruding polyethylene to obtain a polyethylene film sleeve, which is then cut longitudinally, thereby obtaining two rolls of a half-sleeve, this operation ensures the production of two half-sleeves at the same time (Fig. 1), from which seamless tape bags for boxes are made.

The subsequent operations of the method completely repeat the steps in Example 1 and ensure the manufacture of the claimed bag, while the length of the polyethylene web folded in half is L1=550 mm, the width of the lower base of the trapezium of the holes for fixing the boxes L4=115 mm, the distance between the holes L5=170 mm, and cutting handle length h2=90 mm.

The use of the claimed utility model, in addition, allows to reduce the amount of production waste, minimize the cost of polyethylene raw materials and eliminate unnecessary technological operations such as joining polyethylene sheets by means of a weld.

Claims (2)

1. A seamless tape bag for carrying boxes, containing a polyethylene sheet made with holes for fixing the box and cut handles, characterized in that the polyethylene sheet is made in the form of a single tape, on which there are holes for fixing the box and cut handles, and the holes for fixing the boxes have the shape of a trapezoid with rounded corners and are located at a distance from each other, while the ratio of the distance between the holes for fixing the box to the width of the bag is 0.8-1.5, the ratio of the lower base of the trapezoid to the width of the bag is 0.45- 0.8, and the horizontal length of the cutting handle is 70-120 mm. 2. The bag according to claim 1, characterized in that it is made with two holes for fixing the box and two cut handles.

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