RU174871U1 - Package - Google Patents

Abstract

The utility model relates to means of storage or transportation of products, namely to shopping bags and bags. The package contains two multilayer walls connected by welds, carrying elements, the end parts of which are inserted between the layers of the corresponding wall and connected to all its layers by means of welds, while the walls and carrying elements are made of composite material containing high-pressure polyethylene in the range from 30 to 70%, low-pressure polyethylene in the range from 3 to 20%, linear low-density polyethylene in the range from 10 to 50%, chalk additive in the range from 5 to 20%, glide amide-based additive acids in the range of from 0.1 to 5%, based on the polyethylenes compatibilizer blends of olefin copolymers - the rest, wherein the package wall formed with amplification in the form of separate fusion zones. The utility model allows to increase strength and provide the ability to withstand loads up to 55 kg without damage.

Description

The utility model relates to means of storage or transportation of products, namely to shopping bags and bags.

Thus, a shopping bag is known from the prior art, which comprises multilayer walls interconnected by at least one connecting weld seam, as well as carrying elements in the form of two flat multilayer handles connected to the upper parts of the walls, each wall being made at least , in the upper part of several layers of polymer material and the end parts of the carrying elements are placed between the layers of polymer material of the walls made in the upper part with reinforcement in the form of several parallel joints GOVERNMENTAL seams across the end portions of the carrying element and connecting them with layers of the wall, and the wall layers to each other. Carrying elements and / or walls are preferably made of high pressure polyethylene (see RF patent No. 89929, published December 27, 2009).

The disadvantages of this shopping bag are insufficient tensile and puncture strength, low load capacity, since high pressure polyethylene is used as the bag material, which does not allow the bag to withstand the necessary loads, as well as the laboriousness of the production of a multilayer bag.

For the closest analogue to the patented solution, a shopping bag was adopted, containing walls connected by at least one connecting weld seam, as well as carrying elements connected to the upper parts of the walls, each wall made preferably of high-pressure polyethylene and made at least at least two layers of polymer material, and the end parts of the carrying elements are placed between the layers of polymer material of the walls made in the upper part with reinforcement in the form of at least a heap of welded parallel seams connecting the layers of the wall to each other, the reinforcement of the lower part of each wall of the bag is made with reinforcement by at least two welds, and the reinforcement of the end parts of the carrying elements is made of an oval weld or a V-shape, intersecting them and connecting them with wall layers. The upper part of the walls is corrugated along the entire length of the welds due to the shrinkage of the polymeric material during welding and the formation of wavy corrugations between the seams located perpendicularly or at small angles to the seams (see RF patent No. 145438, published on September 20, 2014).

The disadvantages of this shopping bag are insufficient tensile and puncture strength, low load capacity, since high pressure polyethylene is used as the bag material, which does not allow the bag to withstand the necessary loads, as well as the laboriousness of the production of a multilayer bag.

The technical problem of the claimed utility model is the creation of a package with improved technical and operational characteristics, high strength, which can withstand significant loads (weight of portable products), reduce labor costs, simplify production technology.

The technical result achieved by the implementation of this utility model is to increase the strength of the claimed package that can withstand a load of up to 55 kg without damage.

The specified technical result is achieved through the use of a package containing two multilayer walls connected by welds, carrying elements, the end parts of which are inserted between the layers of the corresponding wall and connected to all layers of the corresponding wall by welds, while the walls and carrying elements are made of composite material containing high pressure polyethylene in the range from 30 to 70%, low pressure polyethylene in the range from 3 to 20%, linear low density polyethylene in the range from 10 d 50%, chalk additive in the range from 5 to 20%, a glidant additive based on fatty acid amides in the range from 0.1 to 5%, a polyethylene improver based on a mixture of olefin copolymers - the rest, with the walls of the package made with reinforcement in the form of separate zones welding.

The implementation of the walls of the package is multilayer, the placement of the end parts of the carrying elements between the layers of the corresponding wall and the connection with all layers in the upper part of the corresponding wall with welds, the walls and handles of the package are made of a composite material consisting of low density polyethylene in the range from 30 to 70%, polyethylene high density in the range from 3 to 20%, linear low density polyethylene in the range from 10 to 50%, chalk additives in the range from 5 to 20%, glidants based on fatty acid amides in a range azone from 0.1 to 5%, polyethylene compatibilizers based on a mixture of olefin copolymers - the rest leads to an increase in the strength characteristics of the package, and the implementation of the package walls with reinforcement in the form of separate soldering zones allows the package to withstand a load of up to 55 kg without violating its integrity.

Composite material in these proportions allows maximum use of the high strength characteristics of the starting components, for example, high puncture resistance of low density polyethylene, high tensile strength of high density polyethylene, elimination of thermal degradation due to linear low density polyethylene linear low density polyethylene, increased rigidity due to the addition of chalk additives , high tensile strength and puncture of a sliding additive based on fatty acid amides, and remove and disadvantages, so the resulting composite material has good strength properties at break and puncture resistance compared to prior art materials used.

The implementation of the walls of the package multilayer and with reinforcement in the form of separate welding zones allows you to more evenly distribute the load on the package, reduce the possibility of puncture and rupture and increase the strength of the package.

In the particular case of the implementation of the wall of the package are connected by at least two welds.

Reinforcements in the form of separate welding zones can be staggered in the upper part of the package, or in the lower part of the package, or over the entire area of the package, which will more evenly distribute the load on the package, reduce the possibility of puncture and rupture, and further increase the strength of the package.

Reinforcement in the form of separate welding zones can be located in the upper part of the package in a checkerboard pattern between the side seams of the package walls and between the end parts of the carrying elements.

The end parts of the carrying elements can be connected to the corresponding walls with a technological seam and parallel rectangular welds made inside the borders of the end carrying elements along the entire area of their contact with the corresponding walls of the bag and intersecting the technological seam, which prevents the tearing elements from being torn off, additionally increases the strength of the fastening of the carrying elements to the walls of the package due to the larger area of mutual welding and due to the fact that the welds do not intersect Itza end portions carrying elements, do not extend beyond them, thus there is no more possible burning through the thin walls of the package in comparison with the total wall thickness of the end elements and handling. Technological seam intended for temporary fastening of the carrying element in the handle module can be made in the form of an oval dotted seam.

Reinforcement can be made in the form of separate welding zones in the form of dots, rectangles, circles, triangles, squares, single or repeatedly repeated, or in the form of images, logos or letters.

Carrying elements can be made of 2-8 layers, and the distance between the centers of fixation of the end parts of the carrying elements is from 100 to 190 mm.

The length of one of the carrying elements may be greater than the length of the other carrying element.

The package can be made rectangular in shape and its walls can be connected by two side welds on two opposite sides of the package with the formation of an internal cavity. In this case, the welds can be double.

The package can be made rectangular in shape and its walls are connected by three welds on three sides of the package with the formation of an internal cavity. In this case, the welds can be double.

Between the adjacent layers of each wall, one leaky cavity may be formed.

The walls and bag carrying elements may have a multilayer structure.

The bag can be made of a polymer composite extruded two-layer fabric folded along its length with insertion elements between each two layers, excluding the internal parts, and cut across to obtain a workpiece corresponding to the size of the package, and welded by making two parallel side seams.

The bag can be made of a polymer composite extruded two-layer fabric folded in the longitudinal direction between each two layers, excluding the inner layers, inserted the end parts of the carrying elements with the application of a reinforced weld at the bend, cut across to obtain a workpiece corresponding to the size of the package, and welded by making two parallel side seams.

The walls of the bag can be made of a polymer extruded composite sleeve with the end parts of the carrying elements inserted between the walls, cut into blanks larger than the width of the bag, and welded in pairs with three seams to form an internal cavity for carrying.

The sheet for carrying elements can be made of two-layer rolls with a single layer thickness of 30 ÷ 55 μm, a width of 300 ÷ 900 mm, combined with each other and passed between two hot shafts having protruding welded elements on their surface in the form of parallel strips with the formation on the canvas for elements for carrying transverse welds from 3 to 15 mm wide and a distance between welds from 3 to 15 mm, and inserted into the handle module of a bag making machine for cutting and inserting carrying elements of predetermined sizes.

The sheet for carrying elements can be made of one four-layer folded roll with a thickness of one layer 30 ÷ 55 μm, a width of 300 ÷ 900 mm, passed between two hot shafts having welded protruding elements in the form of parallel strips on the surface to form on the sheet for carrying elements transverse welds with a width of 3 to 15 mm and a distance between the welds of 3 to 15 mm and inserted into the handle module of a bag making machine for cutting and inserting carrying elements of a given size.

The outer surface of the walls can be treated with a corona discharge and a pattern is applied to it in flexographic or silk-screen printing methods in one or several colors.

The outer surface of the walls can be treated with a corona discharge and this surface is coated with a flexographic or silk-screen method with a protective varnish layer.

The composite material of the bag and carrying elements may additionally contain a dye in the range from 0.5 to 5%, which will expand the range of manufactured bags.

The walls of the package in the upper part can be provided with additional layers to further strengthen the design of the package.

The bag can be made using polymer capsules that are not subject to thermal degradation (thermal decomposition) - the decomposition of polymer materials under the influence of high temperature is characterized by the evaporation of light fractions, due to which the polymer material becomes more rigid and brittle, loses its elasticity and ability to stretch.

The essence of the proposed technical solution is illustrated by the drawing, which shows a General view of the package.

A package made of composite material according to the claimed utility model contains front and rear walls 1 connected by at least two welds 7 to form an area for accommodating products that need to be transferred. Each wall is multi-layered, that is, consists of several paintings.

The bag also contains carrying elements 2, each made in the form of a rectangular strip of multilayer composite material, the ends of which are brought together at a certain distance and welded to the walls of the bag to form a loop. The end parts 6 of the carrying elements 2 are located between the layers of the multilayer walls and are connected to all layers in the upper part of the corresponding wall by a dashed technological seam 3 and rectangular seams 4 made inside the borders of the end elements 2 of the carrying along the entire area of their contact with the corresponding wall of the package 1 intersecting the technological a seam but not crossing the boundaries of the end parts 6 of the carrying elements 2 and not beyond them. Carrying elements 2 may consist of 2-8 layers welded together.

Walls 1 and elements of carrying 2 packages are made of composite material containing low density polyethylene in the range from 30 to 70%, high density polyethylene in the range from 3 to 20%, linear low density polyethylene in the range from 10 to 50%, chalk additive in in the range from 5 to 20%, a sliding additive based on fatty acid amides in the range from 0.1 to 5%, a polyethylene coupler based on a mixture of olefin copolymers - the rest.

Adding low density polyethylene to the composite material of which the bag is made allows to increase the puncture strength, which leads to an increase in the strength of the bag. Adding high density polyethylene to the composite material of which the bag is made allows to increase the tensile strength, which leads to an increase in the strength of the bag. Adding linear low density polyethylene to the composite material of which the bag is made allows avoiding the deterioration of the initial properties of the polymer components, namely, thermal degradation, which leads to an increase in heat resistance and strength of the bag. Cretaceous additive allows you to increase the rigidity of the package, thereby increasing its strength characteristics. Adding a glidant based on fatty acid amides to the composite material of which the bag is made makes it possible to increase the tensile and puncture strengths, which leads to an increase in the strength of the bag. Adding a polyethylene compatibilizer based on a mixture of olefin copolymers into the composite material from which the bag is made allows for better quality (at the molecular level) to connect the materials used in the composite to each other, which in turn positively affects the strength characteristics of the bag. Polymer combiner is an additive, “thermodynamic” mixture of polymers that do not have reactive chemical groups, which allows you to combine plastics and / or elastomers to obtain a homogeneous and stable material. The polymer combiner reduces the size of specific components in the mixture, allowing them to be more evenly distributed in the carrier matrix. With a decrease in the size of the components, their specific surface area increases, leading to an increase in the contact surface and an increase in the bonding properties. A mixture of olefin copolymers, which, in particular, may contain olefin elastomers (25-44%), an ethylene copolymer and a secondary vinyl copolymer (35-55%), polyethylene (12-28%), can be used as a polymer compatibilizer.

The upper parts of the walls of the package can be made with reinforcement in the form of two additional layers and separate welding zones 5, while separate welding zones 5 connect the webs of each wall 1 and two additional layers in the upper parts of the walls to each other and are staggered between the side seams 7 the walls 1 of the package and between the end parts of the carrying elements 2.

The package can additionally be made with reinforcement in the form of separate welding zones (soldering) located staggered in the lower part of the package or over the entire area of the package, while the reinforcement is made in the form of separate welding zones in the form of dots, rectangles, stripes, circles, triangles , squares of single or repeatedly repeating, or in the form of images, logos or letters (not shown in the figures).

To obtain reinforcement in the upper part of the package wall, in the lower part of the package wall or on the entire surface, heating plates with convex elements of a given shape, for example, in the form of points, rectangles, stripes, circles, triangles or squares, directly in contact with the layers of the package wall are used. Thus, the reinforcement is carried out by the method of contact welding using heating plates with convex elements of a given shape.

In the particular case of the implementation of the package can be made as follows.

At the first stage, capsules are produced on a plastic compactor using the following components: high-pressure polyethylene, low-pressure polyethylene, linear low-density polyethylene in the above proportions.

At the second stage, the obtained capsules and the following additives: chalk additive, glidating additive based on fatty acid amides, a polyethylene improver based on a mixture of olefin copolymers and dye are mixed in the required proportions in a mixer hopper (or manually). Then, the resulting composite is loaded into a film extruder, from which the composite film is blown.

In the third stage.

A. A web of material is made for the walls of the bag; for this, a folded sleeve with a width of 450 to 950 millimeters is blown with a film extruder, while the depth of each fold is from 10 to 950 millimeters, and the film thickness is from 15 to 90 microns per sleeve wall. The film can be folded from one or both sides, which allows you to get up to 4 layers on each wall of the package or to receive additional reinforcement in the region of the bottom seam and / or the attachment point of the loopback handles. Roll the web into a roll.

A1. Further, the resulting roll can be passed through the flexographic section mounted on the extruder to improve external characteristics and expand the range. Before passing the flexographic section or flexographic machine, the sleeve of the film is subjected to activation — treatment of the surface of the film with a corona discharge using a coronator, which allows improving the quality of printing on one side in the area of applying a flexographic drawing. On the flexographic section or flexographic machine, the necessary pattern can be applied in one or more colors or a varnish layer is applied. This technological operation serves to expand the assortment, improve external characteristics or meet customer needs (logos, branding, etc.)

B. A web is made for fasteners; for this, a folded web with a width of 300 to 600 millimeters and a thickness of 15 to 120 microns is blown onto the sleeve wall using a film extruder. The folds are laid on both sides until they are joined in the center of the canvas. This technology allows you to avoid additionally multiple folding of the canvas and minimize production defects. The resulting web is wound onto a sleeve in a roll.

At the fourth stage, the roll of the handle web (for fasteners) is installed on a thermo-texturing machine to strengthen the fasteners. On a thermo-texturing machine, the roll passes through the tension leveling and pulling shafts and passes between the two thermo-texturing shafts in series, fitting one shaft on one side, fitting the second shaft on the other side, then falls on the aligning shafts, cooling naturally or by supplying cold air, passes through the pulling shafts and wound onto a bushing. Thus, a handle web for a bag making machine is obtained.

Note: reinforcement is performed by thermo-texturing shafts using high temperature from 60 to 300 ° C (depending on the speed of the film between the shafts and the thickness of the film) and the textured (embossed) surface of the shafts on the film.

At the fifth stage, blanks (halves) for the bag are obtained.

The resulting web roll is installed on a bag making machine and pulled through the technological units of the machine according to the technological requirements for the manufacture of blanks for the bag. The handle roll is installed in the handle module of a bag making machine. The manufacture of blanks is as follows:

The canvas with the help of the pulling shafts of the bag making machine is stretched along the technological units of the machine with a certain frequency, then the beat. In each cycle of the machine, the pen module inserts a carrying element between the layers of the film sleeve and oval dotted seams are made with heating elements mounted directly in the pen module (nickels). At the next step, a part of the web with the end part of the carrying element inserted is inserted between two thermotecturing (embossed) plates with the formation of separate rectangular welding zones made inside the boundaries of the end carrying elements over the entire area of their contact with the corresponding walls of the package, due to which the connection of the inserted loop handle with the workpiece. At the next step, cutting and applying a temporary technological seam to the package blank occurs. Billets are collected, packaged and transferred to the next stage of production.

Note: two embossed (thermotecturing) plates have a temperature of 60 to 400 ° C. The bottom plate is covered with a thin layer of silicone from 2 to 10 millimeters. And then both plates are coated with Teflon film. During the beat, the plates are brought together, while the films located between them form separate rectangular welding zones. Since both plates are heated, welding is carried out on both sides of the workpiece, which helps prevent the presence of so-called pockets on the underside of the nested carrying element.

At this stage, the upper parts of the walls are reinforced in the form of separate welding zones located staggered between the side seams of the package walls and the end parts of the carrying elements, as well as the reinforcement of the lower part of the package or the entire package area in the form of dots, rectangles, circles, triangles, squares single or repeatedly repeated or in the form of images, logos or letters by means of heating plates with corresponding convex elements of a given shape.

At the sixth stage, the package is manually stapled from the blanks. The resulting blanks are folded in pairs and manually using a bag welding table are connected with 2-3 wide seams. Due to the use of manual welding, the contact time of the welded knife with the film is increased and its temperature is reduced, which allows more uniform heating of the film layers at the welding site.

The resulting finished reinforced bags are folded and packaged.

To confirm the claimed technical result, prototypes of the packages of the presented design were made, while the ratio of the components of the composite material was as follows:

1 batch:

high pressure polyethylene (LDPE) - 70%,

low pressure polyethylene (HDPE) - 10%,

linear low density polyethylene (LLDPE) - 10%,

chalk additive - 5%,

fatty acid amide based glidant - 4%

a combination of polyethylene based on a mixture of olefin copolymers - the rest

2 batch:

LDPE - 30%

HDPE - 20%,

LLDPE - 30%,

chalk additive - 15%,

fatty acid amide glidant - 0.1%,

a combination of polyethylene based on a mixture of olefin copolymers - the rest

3 batch:

LDPE - 30%

PND - 3%,

LLDPE - 50%,

chalk additive - 10%,

5% fatty acid amide glidant

a combination of polyethylene based on a mixture of olefin copolymers - the rest

4 party:

LDPE - 40%,

PND - 15%,

LLDPE - 20%,

chalk additive - 20%,

fatty acid amide glidant - 2%,

a combination of polyethylene based on a mixture of olefin copolymers - the rest

As a result of experiments, it was found that all the prototypes of 1-4 batches have increased strength and load capacity and can withstand weight up to 55 kg without damage.

With an increase or decrease in the concentration of these components beyond the ranges presented, the ability of the packages to withstand the declared load was not provided.

Thus, the strength of the claimed package is increased and it is possible to withstand a load of up to 55 kg without damage.

Claims (24)

1. The package, characterized in that it contains two multilayer walls connected by welds, carrying elements, the end parts of which are inserted between the layers of the corresponding wall and connected to all its layers by means of welds, while the walls and carrying elements are made of a composite material containing polyethylene high pressure in the range from 30 to 70%, low-pressure polyethylene in the range from 3 to 20%, linear low-density polyethylene in the range from 10 to 50%, chalk additive in the range from 5 to 20%, sliding d bavku the fatty acid amides in the range from 0.1 to 5%, based on the polyethylenes compatibilizer blends of olefin copolymers - the rest, wherein the package wall formed with amplification in the form of separate fusion zones. 2. The package according to claim 1, characterized in that the walls are connected by at least two welds. 3. The package according to claim 1, characterized in that the reinforcements in the form of separate welding zones are staggered in the upper part of the package, or in the lower part of the package, or over the entire area of the package. 4. The package according to claim 1, characterized in that the reinforcements in the form of separate welding zones are located in the upper part of the package in a checkerboard pattern between the side seams of the package walls and between the end parts of the carrying elements. 5. The bag according to claim 1, characterized in that the end parts of the carrying elements are connected to the corresponding walls with a technological seam made in the form of a dashed oval seam, and parallel rectangular seams made inside the borders of the end elements of the carrier over the entire area of their contact with the corresponding walls of the package and intersecting the technological seam. 6. The package according to claim 4, characterized in that the reinforcement is made in the form of separate welding zones in the form of points, rectangles, circles, triangles, single or repeatedly squares, or in the form of images, logos or letters. 7. The package according to claim 1, characterized in that the carrying elements are made of 2-8 layers, and the distance between the centers of fixation of the end parts of the carrying elements is from 100 to 190 mm. 8. The package according to claim 1, characterized in that the walls of the package are made of two layers. 9. The package according to claim 1, characterized in that one of the carrying elements is made in a length exceeding the length of the other carrying element. 10. The package according to claim 1, characterized in that it is made of a rectangular shape and its walls are connected by two side welds on two opposite sides of the package with the formation of an internal cavity. 11. The package according to claim 1, characterized in that it is made of a rectangular shape and its walls are connected by three welds on three sides of the package with the formation of an internal cavity. 12. The package according to paragraphs. 10-11, characterized in that the welds are double. 13. The package according to claim 1, characterized in that between the adjacent layers of each wall one leaky cavity is formed. 14. The bag according to claim 1, characterized in that the walls and the elements of carrying the bag have a multilayer structure. 15. The bag according to claim 1, characterized in that it is made of a polymer composite extruded two-layer fabric folded along its length with inserted between each two layers, excluding the inner, end parts of the carrying elements and cut across to obtain a workpiece corresponding to the size of the package, and welded by making two parallel side seams. 16. The bag according to claim 1, characterized in that it is made of a polymer composite extruded two-layer fabric folded in the longitudinal direction, between each two layers, excluding the inner layers, the end parts of the carrying elements are inserted with a reinforced weld at the bend, cut across with the receipt of the workpiece corresponding to the size of the package, and welded by performing two parallel side seams. 17. The bag according to claim 1, characterized in that the walls of the bag are made of a polymer composite extruded sleeve with end parts of the carrying elements inserted between the walls, cut into blanks larger than the width of the bag, and welded in pairs with three seams to form an internal cavity for carrying. 18. The package according to claim 1, characterized in that the web for carrying elements is made of two-layer rolls with a thickness of one layer 30 ÷ 55 μm, a width of 300 ÷ 900 mm, combined between each other and passed between two hot shafts having welded protrusions on their surface elements in the form of parallel strips with the formation on the web for carrying elements of transverse welds with a width of 3 to 15 mm and a distance between welds of 3 to 15 mm, and inserted into the handle module of a bag making machine for cutting and inserting the carrying elements sizes. 19. A bag according to claim 1, characterized in that the web for carrying elements is made of one four-layer folded roll with a thickness of one layer 30 ÷ 55 μm, a width of 300 ÷ 900 mm, passed between two hot shafts having protruding welded elements on their surface in in the form of parallel strips with the formation on the canvas for the elements of carrying transverse welds with a width of 3 to 15 mm and the distance between the joints from 3 to 15, mm and inserted into the handle module of a bag making machine for cutting and inserting the elements of carrying specified sizes. 20. The package according to claim 1, characterized in that the outer surface of the walls is treated with a corona discharge and a pattern is applied in flexographic or silk-screen printing using one or more colors. 21. The package according to claim 1, characterized in that the outer surface of the walls is treated with a corona discharge and this surface is coated with a protective varnish layer by flexographic or silk-screen printing. 22. The package according to claim 1, characterized in that the composite material further comprises a dye. 23. The package according to claim 1, characterized in that the walls of the package in the upper part are provided with two additional layers. 24. The package according to claim 1, characterized in that it is made using polymer capsules that are not subject to thermal degradation.

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