RU2835586C1 - Narrow-neck glass article blank and narrow-neck glass article - Google Patents

Abstract

FIELD: glass.

SUBSTANCE: invention relates to glass industry, more specifically to workpiece of narrow-necked glass article and to narrow-necked glass article made from said workpiece, and can be used for bottling, storage and transportation of various beverages. Workpiece of a narrow-necked glass article consists of a neck, a bottom part, a housing connected to the neck and a bottom part. Workpiece housing is made in the form of a body of revolution of a geometric figure, which is limited by a wavy curve having extrema, wherein the thickness of the walls of the workpiece housing is made variable so that housing wall thickness increases from wavy curve minimum to wavy curve maximum, and thickness of the walls of the housing in the maximum of the wavy curve is 8-50% more than the thickness of the walls of the housing in the minimum of the wavy curve. Also described is a narrow-necked glass article made from said workpiece and consisting of connected neck, shoulders, cylindrical housing, bottom part, wherein the wall thickness of the article is variable so that ratio of maximum wall thickness to minimum wall thickness is not more than 2.5.

EFFECT: reducing the weight of the narrow-necked glass product while maintaining its strength.

17 cl, 3 dwg

Description

Field of technology

[0001] The present group of inventions relates to the glass industry, more specifically, to a blank for a narrow-necked glass product and to a narrow-necked glass product made from said blank, and can be used for bottling, storing, and transporting various beverages.

State of the art

[0002] The use of glass for the manufacture of products is due to the fact that glass is chemically inert, i.e. it does not change the taste, aroma and color of various drinks that are in products made from the said material, since it does not react with the constituent components of drinks. In this regard, manufacturers currently continue to improve the design features of glass products in order to improve their physical and mechanical properties, namely: reducing the weight of the glass product while maintaining its high strength.

[0003] Thus, the prior art includes patent RU 36818 U1 (published on 27.03.2004; IPC: B65D 1/02), which describes a utility model related to the glass industry and which can be used as a container for alcoholic and non-alcoholic products. The technical result of the analogue consists in increasing the manufacturability of the product, reducing the weight and quantity of products that do not meet the requirements by eliminating the formation of microcracks in the area of the bottle shoulders during casting. The analogue describes a bottle containing a neck with a rim, inclined shoulders and a cylindrical body connected to the bottom, in which the transition points of the neck into the shoulders and the shoulders into the body are made along radii, characterized in that the overall height of the bottle, the diameter and the height of the cylindrical body satisfy the expressions: 0.5 < h/H < 0.6; 3.55< H/D < 3.6, where H is the overall height of the bottle, mm; h is the height of the body, mm; D is the diameter of the body, mm; wherein the neck is made expanding towards the shoulders and is provided with a conical section with a length of about 33.0 mm, conjugated with a convex section with a radius of curvature of about 55.0 mm, and the surface of the shoulders is made concave with a radius of curvature of about 35.0 mm on the section conjugated with the neck, and convex with a radius of curvature of about 35.0 mm on the surface section conjugated with the body.

[0004] Patent RU 28102 U1 (published 10.03.2003; IPC: B65D 1/02) describes a utility model related to the design of containers, in particular, glass containers, which can be used for pouring beverages. The technical result of the analogue consists in expanding the arsenal of technical means of bottles for pouring beverages while maintaining the strength properties of the vessel. The analogue describes a bottle for liquid, comprising a neck with a threaded rim, inclined shoulders and a cylindrical body with a recess for a label and mated with a bottom, in which the places of transition of the neck into the shoulders and the shoulders into the body are made along radii, characterized in that the overall height of the bottle, the diameter and the height of the cylindrical body satisfy the expression 0.5 < h/H < 0.7, 4.1 < H/D < 4.5, where H is the overall height of the bottle, h is the height of the body, D is the diameter of the body, while the neck is made expanding towards the shoulders, and the surface of the shoulders is made concave with a radius of curvature of about 20.0 mm in the section mated with the neck, and convex with a radius of curvature of about 44.0 mm in the section mated with the body.

[0005] Patent RU 39572 U1 (published 10.08.2004; IPC: B65D 1/02) describes a utility model related to glass packaging, namely, to bottles intended for filling with food liquids, their storage and transportation. The technical result of the analogue consists in reducing the weight of the bottle by selecting the optimal ratio of the shapes and sizes of the bottle parts. The analogue describes a bottle comprising a conical neck, mated along the radius with shoulders, and a cylindrical body, characterized in that the shoulders are made convex, the radius of curvature of the surface of which is selected from the expression 24 ≤ R ≤ 26, where R is the radius of curvature of the surface of the shoulders, mm, and the height of the conical neck, the radius of the mating surface of the neck and shoulders, the overall diameter of the cylindrical body and the height of the bottle are selected from the expressions: 69 ≤ h ≤ 71; 6.5 ≤ r ≤ 7.5; 65.5 ≤ D ≤ 68.1; 261.3 ≤ H ≤ 264.7, where h is the height of the conical neck, mm; r is the radius of the mating surface of the neck and shoulders, mm; D is the overall diameter of the cylindrical body, mm; H is the height of the bottle, mm.

[0006] Patent RU 36355 U1 (published 10.03.2004; IPC: B65D 1/02) describes a utility model related to the glass industry, which can be used as a container for alcoholic and non-alcoholic products. The technical result of the analogue consists in increasing the technological effectiveness of bottle production, reducing its weight and the amount of products that do not meet the requirements. The analogue describes a bottle for liquid, containing a neck with a rim, inclined shoulders and a cylindrical body connected to the bottom, in which the transition points of the neck into the shoulders and the shoulders into the body are made along radii, characterized in that the overall height of the bottle, the diameter and the height of the cylindrical body satisfy the expression: 0.5 < h/H < 0.65; 3.0 < H/D < 4.0, where H is the overall height of the bottle, mm; h is the height of the body, mm; D is the diameter of the body, mm, while the neck is made expanding towards the shoulders and is provided with a conical section with a length of about 24.3 mm, conjugated with a convex section with a radius of curvature of about 50.0 mm, and the surface of the shoulders is made concave with a radius of curvature of about 17.0 mm on the section conjugated with the neck, and convex with a radius of curvature of about 45 mm on the surface section conjugated with the body.

[0007] Patent RU 79869 U1 (published 20.01.2009; IPC: B65D 1/02) describes a utility model related to a container made of glass and intended for temporary storage of liquids, such as mineral water after it has been bottled by the manufacturer until the consumer empties the bottle. The technical result of the analogue consists in increasing the safety of using a glass bottle when it is installed on any surface, in eliminating its slipping under the influence of force impulses, as well as in preventing damage to the label and preserving the completeness of the information on it. The analogue describes a glass bottle in the form of a body of revolution, containing a neck, a cylindrical body with a bottom, mated with the neck, characterized in that the cylindrical body is mated with the neck by a section of a convex arc-shaped surface in section, turning into a section of the surface in the form of a truncated cone, the larger base of which faces the bottom, and the smaller is connected by a section of a concave arc-shaped surface in section with the larger base of the conical section, turning into a lower convex belt mated along a smaller truncated cone with the upper convex belt of the neck, wherein the cylindrical body in the section between the bottom and the larger base of the larger truncated cone is made with a smaller, by an amount not exceeding the thickness of the glass of the cylindrical body, outer diameter than the larger base of the larger cone or the bottom at the place of its mating with the cylindrical body, wherein the places of the mentioned matings are made along convex arc-shaped surfaces in section, and the bottom on its supporting The surface has crescent-shaped marks around the perimeter.

[0008] Patent RU 70227 U1 (published 20.01.2008; IPC: B65D 1/00) describes a utility model related to containers for bottling, storing, transporting and selling alcoholic beverages, such as cognac drinks, cognacs, and brandy. The technical result of the analogue consists in increasing the reliability of the bottle design. The analogue describes a bottle comprising a body, a base, a conical elongated neck with a threaded rim, characterized in that the outer radius of the neck's mating with the shoulders is equal to the inner radius of the shoulders' mating with the body and is 30 mm, while the body is made uniformly tapering toward the base and is mated with the latter along the radius, the cylindrical part of the base is made with a diameter equal to the largest diameter of the body, and the ratio of the height of the neck with the rim to the height of the body is 1.1.

[0009] Patent RU 95642 U1 (published 10.07.2010; IPC: B65D 1/02) describes a utility model related to containers for storing and transporting liquids, and more specifically, to bottles manufactured primarily by glass blowing, which can be used for bottling various beverages. The technical result of the analogue consists in increasing the technological efficiency of manufacturing bottles with thinned walls, the accuracy of the nominal capacity of the internal volume, increasing the range of use of these bottles and improving their performance characteristics due to increasing their rigidity. The analogue describes a bottle comprising a cylindrical body with a recess for a label, coupled with a concave spherical bottom with anti-slip ribbing, a crown, shoulders, a conical surface section of which widens downwards and is located between a radially concave surface on a section connected to the crown and a radially convex surface on a section coupled with the cylindrical body, wherein the ratio of the height h of the cylindrical body to the overall height H of the bottle is in a certain range of values, characterized in that the height of the conical surface section of the inclined shoulders is about 74.4 mm, the ratio of the height h of the cylindrical body to the overall height H of the bottle is 0.49 < h/H < 0.51, the ratio of the overall height H of the bottle to the diameter d of the recess for the label is 3.8 < H/d < 4.1, the ratio of the overall height H of the bottle to the depth h ₂ of the concave spherical bottom is 17 < H/h ₂ < 21, and the radius The concave spherical bottom is about 26.7 mm.

[00010] The main drawback of the identified analogues is the increased weight of the bottles compared to the real narrow-necked glass product. The increase in the weight of the bottles of the analogues occurs due to the non-optimal distribution of glass along the walls of the bottles.

The essence of the group of inventions

[00011] The objective of the present group of inventions is to develop a blank for a narrow-necked glass product and a narrow-necked glass product made from said blank, which ensure a reduction in the amount of glass used to form the glass product.

[00012] The said task is achieved thanks to such a technical result as ensuring a reduction in the weight of a narrow-neck glass product while maintaining its strength. The said task is achieved, including, but not limited to:

[00013] the thickness of the walls of the body of the workpiece, made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve;

[00014] the thickness of the walls of the body of the workpiece, made variable in such a way that the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve;

[00015] the thickness of the walls of the product, made variable in such a way that the ratio of the maximum wall thickness to the minimum wall thickness is no more than 2.5.

[00016] More fully, the technical result is achieved by a blank of a narrow-necked glass product consisting of a neck, a bottom part, a body connected to the neck and the bottom part. Moreover, the body of the blank is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes. In this case, the thickness of the walls of the blank body is made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve.

[00017] The production of a narrow-necked product blank and, accordingly, a narrow-necked product, from glass is due to the fact that glass is chemically inert, that is, it does not change the taste, aroma and color of various drinks that are in the product made from the specified material, since glass does not react with the constituent components of drinks.

[00018] The neck, bottom part and body connected to the neck and bottom part of the blank of a narrow-neck glass product are necessary structural elements for creating a solid and hollow blank of a glass product.

[00019] The presence of a narrow neck in the product is due to the fact that the narrow-neck press-blowing method is used to manufacture the glass product, which helps to reduce the weight of the glass product. To create a durable product with a narrow neck, it is necessary to make the body of the blank from which the product is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve with extrema. The extrema of the wave-like curve are understood to be the minimums and maximums of the wave-like curve.

[00020] In order to reduce the weight of a narrow-neck glass product, it is necessary to reduce the weight of its blank. The weight of the blank of a narrow-neck glass product is reduced by changing the thickness of the blank walls along its entire perimeter. In other words, in order to reduce the weight of the blank, it is necessary to provide different wall thicknesses of the blank depending on their resistance to deformation. It is primarily necessary to provide different wall thicknesses of the blank body, since the largest part of the product blank is its body, which has a greater effect on the weight of the blank, and, accordingly, the product. It should be noted that when forming a narrow-neck glass product from a blank, the minimum of the wave-like curve of the blank body passes into such a section of the product that is located between the connection of the shoulders with the cylindrical body of the product and the connection of the cylindrical body of the product with its bottom. That is, when forming a narrow-neck glass product from a blank, the minimum of the wave-like curve of the blank body passes into a section of the product that is subject to minimal deformation under any impact on it, for example, mechanical. Moreover, when forming a narrow-neck glass product from a blank, the maximums of the wave-like curve of the blank body pass into sections of the contact diameters of the product, that is, into the connection of the shoulders with the cylindrical body of the product and into the connection of the cylindrical body of the product with the bottom. The specified areas of the product, in which its structural elements are connected to each other, have low resistance to deformation. Also, the specified zones are subject to maximum impact loads both during transportation and when passing along process lines during bottling of the product. In this regard, the specified sections of the product must be additionally strengthened to improve the resistance of the product to deformation and, accordingly, increase the strength of the product as a whole. Thus, in order to reduce the weight of the product while maintaining its strength, it is necessary that the thickness of the body walls at the minimum of the wave-like curve of the body be less than the thickness of the body walls at the maximum of the wave-like curve. In this connection, the thickness of the walls of the body of the blank is made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve so that the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve. In this case, in addition to reducing the amount of glass used in the manufacture of the blank of the product, which contributes to the reduction in the weight of the product formed from the said blank, the thickness of the walls of the body at the minimum of the wave-like curve can be 7 - 10 mm, and the thickness of the walls of the body at the maximum of the wave-like curve can be 9 - 13 mm.

[00021] Thus, the combination of making the body of the blank in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes, with making the thickness of the walls of the body variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve, contributes to a reduction in the weight of a narrow-neck glass product made from the said blank, while maintaining its strength.

[00022] The change in the diameter of the blank body may be 10 - 40% in relation to the diameter of the blank neck. This eliminates a sharp change in the parameters of the product blank, which makes it possible to reduce the stress concentration in the glass of the product formed from the said blank. Stresses in the glass of the product contribute to the occurrence of notches in it, which may subsequently provoke the destruction of the product. In other words, a change in the diameter of the blank body, which may be 10 - 40% in relation to the diameter of the blank neck, additionally contributes to the smoothness of the distribution of glass along the walls of the blank and, accordingly, the product, which leads to an increase in the strength of the product made from the said blank. In this case, in order to further increase the strength of the product, the body diameter preferably varies within the range from 23 mm to 41 mm from the neck to the bottom part, but not limited to this, and the diameter of the blank neck is 23 - 28 mm, but not limited to this.

[00023] The height of the bottom part of the blank may be 4 - 15% of the height of the blank body. The bottom part of the blank passes into the bottom part of the glass product, and the bottom part of the glass product is subject to large mechanical effects, leading to its deformation. In this regard, it is necessary to additionally strengthen the bottom part of the product. Additional strengthening of the bottom part of the product is ensured by increasing the thickness of the walls of the bottom part, therefore, in order to create a glass product that has a low weight while maintaining its high strength, the height of the bottom part of the blank may be 4 - 15% of the height of the blank body. With the specified ratio of the height of the bottom part of the blank and the height of the blank body, in order to reduce the weight of the product, the height of the blank body is preferably 125 - 145 mm, but not limited to this, and the height of the bottom part of the blank is 5 - 22 mm, but not limited to this.

[00024] The maximum of the wavy curve of the body may be located at a distance of 30 - 60 mm from the adjacent minimum of the wavy curve. This ensures a smooth distribution of glass along the walls of the body of the blank, ensuring a reduction in the stress concentration in the glass of the product made from the said blank. Accordingly, a reduction in the stress concentration in the glass of the product allows for an increase in the resistance of the glass product made from the said blank to deformations caused by mechanical action, i.e., it additionally increases the strength of the narrow-neck glass product.

[00025] The technical result is also achieved by a narrow-necked glass product made from a blank and consisting of a connected neck, shoulders, cylindrical body, and bottom. The blank of a narrow-necked glass product consists of a neck, a bottom, and a body connected to the neck and the bottom. Moreover, the body of the blank is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes. In this case, the thickness of the walls of the blank body is made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve. In this case, the thickness of the walls of the product is made variable in such a way that the ratio of the maximum wall thickness to the minimum wall thickness is no more than 2.5.

[00026] The production of a narrow-necked product blank and, accordingly, a narrow-necked product, from glass is due to the fact that glass is chemically inert, that is, it does not change the taste, aroma and color of various drinks that are in the product made from the specified material, since glass does not react with the constituent components of drinks.

[00027] The neck, bottom and body connected to the neck and bottom of the narrow-neck glass product blank are necessary structural elements for creating a solid and hollow glass product blank with reduced weight.

[00028] The presence of a narrow neck in the product is due to the fact that the narrow-neck press-blowing method is used to manufacture the glass product, which helps reduce the weight of the glass product. To create a durable product with a narrow neck, it is necessary to make the body of the blank from which the product is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve with extrema.

[00029] In order to reduce the weight of a narrow-neck glass product, it is necessary to reduce the weight of its blank. The weight of the blank of a narrow-neck glass product is reduced by changing the thickness of the blank walls along its entire perimeter. In other words, in order to reduce the weight of the blank, it is necessary to provide different wall thicknesses of the blank depending on the resistance of the walls of the product obtained from the said blank to various deformations. It is primarily necessary to provide different wall thicknesses of the blank body, since the greater part of the product blank falls on its body, which has a greater effect on the weight of the blank, and, accordingly, the product. It should be noted that when forming a narrow-neck glass product from a blank, the minimum of the wave-like curve of the blank body passes into such a section of the product that is located between the connection of the shoulders with the cylindrical body of the product and the connection of the cylindrical body of the product with its bottom. That is, when forming a narrow-neck glass product from a blank, the minimum of the wave-like curve of the blank body passes into the section of the product that is subject to minimal deformation under any impact on it, for example, mechanical. Moreover, when forming a narrow-neck glass product from a blank, the maximums of the wave-like curve of the blank body pass into the sections of the contact diameters of the product, that is, into the connection of the shoulders with the cylindrical body of the product and into the connection of the cylindrical body of the product with the bottom. The specified areas of the product, in which its structural elements are connected to each other, have low resistance to deformation. Also, the specified zones are subject to maximum impact loads both during transportation and when passing along process lines during product bottling. In this regard, the specified sections of the product must be additionally strengthened to improve their resistance to deformation and, accordingly, to increase the strength of the product as a whole. Thus, in order to reduce the weight of the product while maintaining its strength, it is necessary that the thickness of the walls of the blank body at the minimum of the wave-like curve of the body be less than the thickness of the walls of the blank body at the maximum of the wave-like curve. In this regard, the thickness of the walls of the blank body is made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve so that the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve. In this case, in addition to reducing the amount of glass used in the manufacture of the blank of the product, contributing to the reduction in the weight of the product formed from the said blank, the thickness of the walls of the body at the minimum of the wave-like curve can be 7 - 10 mm, and the thickness of the walls of the body at the maximum of the wave-like curve can be 9 - 13 mm.

[000330] The connected neck, shoulders, cylindrical body, and bottom part of a narrow-neck glass product are necessary structural elements for creating a solid and hollow glass product with reduced weight.

[00031] Due to the fact that the thickness of the walls of the body of the blank is made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve, a decrease in the weight of the glass product formed from the said blank is ensured, while maintaining its strength. However, when forming a glass product from the described blank, in order to maintain its strength, it is also necessary to ensure a variety of wall thicknesses of the product. In this regard, the thickness of the walls of the product is made variable. In order to ensure a decrease in the weight of the product, which has high strength due to walls of different thickness along its perimeter, it is necessary that the ratio of the maximum wall thickness of the product to the minimum wall thickness of the product be no more than 2.5. The specified requirement for the ratio of the maximum and minimum wall thicknesses of the product with a reduced weight is necessary to prevent excessive differences in the thickness of its walls. Excessive differences in the thickness of the product walls reduce its strength. To further improve the strength of a narrow-neck glass product with reduced weight, the minimum wall thickness of the product can be 1 - 1.5 mm.

[00032] The diameter of the shoulders of the product from the junction of the neck with the shoulders to the junction of the shoulders with the cylindrical body may increase by no more than 3 times in relation to the diameter of the neck of the product. This eliminates a sharp change in the parameters of the product, allowing to reduce the concentration of stresses in the glass of the product, which cause notches in it, leading to a deterioration in its strength. In other words, the said change in the diameter of the shoulders of the glass product allows to manufacture a narrow-necked product, maintaining its strength. In this case, the diameter of the shoulders of the product from the junction of the neck with the shoulders to the junction of the shoulders with the cylindrical body preferably increases within the range from 23 mm to 68 mm, but not limited to this, and the diameter of the neck of the product is 23 - 28 mm, but not limited to this. Since the shoulders of the glass product pass into the part of the product that is the cylindrical body, then in the case in which the diameter of the shoulders from the junction of the neck with the shoulders to the junction of the shoulders with the cylindrical body increases within the range from 23 mm to 68 mm, preferably the diameter of the cylindrical body of the product is 60 - 68 mm, but not limited to this.

[00033] The bottom part of the glass article may be made concave inward of the article. The concavity of the bottom part of the article provides for an increase in the resistance of the article to deformations arising from mechanical action on the article and/or arising from internal pressure in the article, due to an increase in the length of the line of action of the deforming force on the article material and the redistribution of the force vector along its projections onto the curved bottom part of the article in the direction of its inner part.

Description of drawings

[00034] The subject matter of the present application is described in paragraphs and clearly stated in the claims. The above-mentioned objectives, features and advantages of the group of inventions are apparent from the following detailed description, in combination with the accompanying drawings, which show:

[00035] Fig. 1 shows a variant of a schematic view of a blank of a narrow-neck glass product in longitudinal section with a shaded area illustrating the different wall thickness of the blank of the narrow-neck glass product;

[00036] Fig. 2 shows a variant of a schematic view of a blank of a narrow-necked glass product in longitudinal section;

[00037] Fig. 3 shows a variant of a schematic view of a narrow-necked glass product in longitudinal section.

[00038] These figures are explained by the following positions: 1 - neck of the blank of a narrow-neck glass product; 2 - body of the blank of a narrow-neck glass product; 3 - bottom part of the blank of a narrow-neck glass product; 11 - neck of a narrow-neck glass product; 21 - shoulders of a narrow-neck glass product; 22 - cylindrical body of a narrow-neck glass product; 31 - bottom part of a narrow-neck glass product; 4 - cavity inside the blank of a narrow-neck glass product.

Detailed description

[00039] In the following detailed description of the implementation of the group of inventions, numerous implementation details are provided to ensure a clear understanding of the present group of inventions. However, it is obvious to a person skilled in the subject matter how the present group of inventions can be used both with and without these implementation details. In other cases, well-known methods, procedures and components are not described in detail so as not to unnecessarily complicate the understanding of the features of the present group of inventions.

[00040] Moreover, it is clear from the above presentation that the group of inventions is not limited to the given implementation. Numerous possible modifications, changes, variations and replacements that preserve the essence and form of the present group of inventions are obvious to specialists skilled in the subject area.

[00041] Glass is a material that is very popular among manufacturers of products used for bottling, storing, and transporting various beverages. Its popularity is due to the fact that glass is chemically inert, i.e. it does not change the taste, aroma, or color of various beverages contained in products made from this material, since it does not react with the components of beverages. At the same time, manufacturers are interested in producing products that are highly durable and lightweight. In this regard, manufacturers are currently continuing to improve the design features of glass products in order to improve their physical and mechanical properties, namely: reducing the weight of the glass product while maintaining its high strength.

[00042] The present technical solution concerns a blank of a narrow-necked glass product consisting of a neck, a bottom part, a body connected to the neck and the bottom part. Moreover, the body of the blank is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes. In this case, the thickness of the walls of the blank body is made variable in such a way that the thickness of the walls of the body increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body at the minimum of the wave-like curve.

[00043] Variants of a schematic view of a longitudinal section of a blank of a narrow-necked glass product are shown in Fig. 1, Fig. 2. The production of a blank of a narrow-necked product and, accordingly, a narrow-necked product, from glass is due to the fact that it is chemically inert, i.e. it does not change the taste, aroma and color of various drinks that are in the product made from the specified material, since glass does not react with the constituent components of drinks. For the production of a blank of a glass product and, accordingly, a glass product, transparent, frosted, flint, amber or dark-brown tinted glass can be used, but is not limited to this. For example, amber or dark-brown glass is used for additional protection of drinks from the effects of the environment, which can deteriorate or change color when exposed to light.

[00044] The present blank of a narrow-neck glass product consists of a neck 1, a bottom part 3 and a body 2 connected to the neck 1 and the bottom part 3. The neck 1, the bottom part 3 and the body 2 connected to the neck 1 and the bottom part 3 of the blank of a narrow-neck glass product are necessary structural elements of the blank for creating a solid and hollow blank of a glass product.

[00045] The presence of a narrow neck in the product is due to the fact that the narrow-neck press-blowing method is used to manufacture the glass product, which helps to reduce the weight of the glass product.

[00046] In this case, in order to create a hollow article with a narrow neck, it is necessary to make the body 2 of the blank from which the article is made in the form of a body of revolution of a geometric figure. Fig. 1 shows a variant of a schematic view in longitudinal section of the blank of a narrow-necked glass article, where the cavity 4 of the blank of the narrow-necked glass article is marked, which is formed by placing a plunger in a drop of glass, the geometry of which exactly repeats the geometry of the formed cavity 4. In this case, in order to ensure a smooth and specified distribution along the perimeter of the glass blank, which consists in the fact that the thickness of the walls of the body of the blank is made variable, and which helps to reduce the concentration of stresses in the glass of the article obtained from the specified blank, the body 2 of the blank is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes. A decrease in the concentration of stresses in the glass of the article makes it possible to improve the strength of the article. Thus, the execution of the body 2 of the blank in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extrema, makes it possible to impart strength to the product. It is worth noting that an extremum is the maximum and/or minimum value of a function on a given set, i.e., an extremum of a wave-like curve means a minimum and/or maximum of the specified curve. The number of extrema of the wave-like curve of the body 2 of the blank directly depends on what geometry must be imparted to the glass product made from it. The number of extrema of the wave-like curve of the body 2 of the blank can be 2 - 4. Fig. 1, Fig. 2 show variants of a schematic view of a longitudinal section of a narrow-neck glass product blank, according to which the wave-like curve of the body 2 has 4 extrema: 2 maximums and 2 minimums. In Fig. 1, each extremum is marked with positions L₁, L₂, L₃, L₄: L₁, L₃illustrate the minima of the wave-like curve, L₂, L₄illustrate the maxima of the wave-like curve. For example, in Fig. 2 it is shown by position h₁the distance between the minimum (the connection of the neck of the 1st blank with the body of the 2nd blank) and the maximum of the wave-like curve of the body of the 2nd blank, and the position h₂- the distance between the maximum and minimum of the wave-like curve of body 2.

[00047] In order to reduce the weight of a narrow-neck glass product, it is necessary to reduce the weight of its blank. The weight of the blank of a narrow-neck glass product is reduced by changing the thickness of the walls of the blank along its entire perimeter. In other words, in order to reduce the weight of the blank, it is necessary to provide different wall thicknesses of the blank of the product depending on the resistance of the walls of the product to deformations. It is mainly necessary to provide different wall thicknesses of the body 2 of the blank, since the greater part of the blank of the product falls on its body 2, which has a greater effect on the weight of the blank, and, accordingly, the product. It should be noted that when forming a narrow-neck glass product, the variant of which is shown in Fig. 3, from the blank, the minimum L ₃ of the wave-like curve of the body 2 of the blank passes into the section of the product located between the connection of the shoulders 21 with the cylindrical body 22 of the product and the connection of the cylindrical body 22 of the product with its bottom part 31. Also, the minimum of the wave-like curve of the body L ₁ , which is the connection of the body 2 and the neck 1 of the blank, passes into the connection of the neck 11 of the product with the shoulders 21 of the product. That is, in any case, when forming a narrow-necked glass product from the blank, the minimum of the wave-like curve of the body 2 of the blank passes into the section of the product that is subject to minimal deformation under any impact on it, for example, mechanical. Moreover, when forming a narrow-neck glass article from a blank, the maxima L ₂ , L ₄ of the wave-like curve of the body 2 of the blank pass into the sections of the contact diameters of the article, i.e. L ₂ passes into the connection of the shoulders 21 with the cylindrical body 22 of the article and L ₄ passes into the connection of the cylindrical body 22 of the article with the bottom part 31. The specified areas of the article, in which its structural elements 21, 22, 31 are connected to each other, have low resistance to deformations. In this regard, the specified sections of the article must be additionally strengthened to improve the resistance of the article to deformations and, accordingly, to increase the strength of the article as a whole. Thus, in order to reduce the weight of the article while maintaining its strength, it is necessary that the thickness of the walls of the body 2 at the minimum of the wave-like curve of the body 2 be less than the thickness of the walls of the body 2 at the maximum of the wave-like curve. In this connection, the thickness of the walls of the body 2 of the blank is made variable in such a way that the thickness of the walls of the body 2 increases from the minimum of the wave-like curve to the maximum of the wave-like curve. For clarity, the change in the thickness of the walls of the body 2 of the blank, as well as the bottom part 3 of the blank, is illustrated in Fig. 1 by hatching. That is, the thickness of the walls of the blank increases from the area of the blank, passing into the area of the product, possessing high resistance to deformations, to the area of the blank, passing into the area of the product, possessing low resistance to deformations. It should be noted that the increase in the thickness of the walls occurs smoothly, without sharp jumps, in order to reduce the concentration of stresses in the glass of the product made from the blank.

[00048] In order to reduce the mass of the product blank, the amount of glass used for its manufacture is reduced, i.e. the thickness of the walls of the body 2 of the blank is reduced, but at the same time it is necessary to maintain the high strength of the product when reducing the amount of glass used. For this purpose, the thickness of the walls of the body 2 increases from the minimum of the wave-like curve L ₁ , L ₃ to the maximum of the wave-like curve L ₂ , L ₄ so that the thickness of the walls of the body 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body 2 at the minimum of the wave-like curve. The thickness of the walls increases from the region of the blank transitioning into the region of the product possessing high resistance to deformations to the region of the blank transitioning into the region of the product possessing low resistance to deformations. It should be noted that first, the minimum possible thickness of the workpiece walls is selected for sections that transition into sections of the product that are minimally subject to deformation caused by various types of impacts, i.e. the minimum thickness of the workpiece walls is selected for those sections that transition into sections of the product that are highly resistant to deformation. And then, based on the selected minimum possible thickness of the workpiece walls, the change in wall thickness is ensured along the entire perimeter of the workpiece, namely, the body 2 of the workpiece. In this case, if for a workpiece with reduced weight the thickness of the walls of the body 2 of the workpiece at the maximum of the wave-like curve exceeds by less than 8% the thickness of the walls at the minimum of the wave-like curve of the body 2, then the strength of the product manufactured from the described workpiece is reduced, since the created thickness of the walls of the body 2 of the workpiece at the maximum of the wave-like curve of the body 2 is not sufficient to impart high stability to the section of the product that corresponds to the position of the maximum of the wave-like curve of the body 2 L ₂ , L ₄ , to various types of impacts leading to its deformation. In this case, if the thickness of the workpiece walls at the maximum of the wave-like curve exceeds by more than 50% the thickness of the walls at the minimum of the wave-like curve of the housing 2, an increase in the mass of the workpiece of the product occurs, and, therefore, of the product manufactured from the said workpiece, without improving the strength of the product compared to the variant in which the thickness of the walls of housing 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of housing 2 at the minimum of the wave-like curve. In this regard, in order to ensure a decrease in the mass of the product while maintaining its strength, the thickness of the walls of housing 2 increases from the minimum of the wave-like curve to the maximum of the wave-like curve so that the thickness of the walls of housing 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of housing 2 at the minimum of the wave-like curve. With the said ratio of the thickness of the walls of the workpiece at the minima and maxima of the wave-like curve, a product is obtained that is characterized by a minimum internal pressure before failure of 10 bar; and which is resistant to a vertical load of up to 500 kgf and resistant to an impact load of up to 76 cm/s. In this case, in addition to reducing the amount of glass used in the manufacture of the product blank, which helps to reduce the weight of the product formed from the said blank, the thickness of the walls of the body 2 at the minimum L ₃ of the wave curve can be 7 - 10 mm, and the thickness of the walls of the body 2 at the maximum L ₂ , L ₄ of the wave curve can be 9 - 13 mm, the thickness of the walls of the neck 1 of the blank can vary from 3 - 3.5 mm at the beginning of the neck 1 of the blank to 7 - 10 mm at the junction of the neck 1 with the body 2 of the blank. This, for example, makes it possible to reduce the weight of a narrow-necked glass product with a volume of 450 ml to 230 grams.

[00049] Thus, the combination of making the body 2 of the blank in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes, with making the thickness of the walls of the body 2 variable in such a way that the thickness of the walls of the body 2 increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body 2 at the minimum of the wave-like curve, contributes to a reduction in the weight of a narrow-neck glass product made from the said blank, while maintaining its strength.

[00050] In order to impart additional strength to the product made from this blank and to reduce its weight, the diameter of the body 2 of the blank preferably changes by 10 - 40% in relation to the diameter of the neck 1 of the blank. In a narrow-necked product made from a blank, in which the diameter of the body 2 changes by less than 10% in relation to the diameter of the neck 1 of the blank, there is a sharp decrease in the thickness of the walls in the sections from the junction of the neck with the shoulders to the junction of the body of the product with the bottom, which leads to a deterioration in its strength. A sharp decrease in the wall thickness in sections of the product made from the specified blank occurs due to an insufficient amount of glass in the blank, since the amount of glass in the blank also depends on the amplitude of the wave-like curve of the body 2. That is, the higher the amplitude of the wave-like curve of the body 2 in relation to the neck 1 of the blank, in other words, the greater the change in the diameter of the body 2 of the blank in relation to the diameter of the neck 1 of the blank, the greater the amount of glass falls on the walls of the blank. It has been experimentally determined that if the diameter of body 2 of the blank changes by more than 40% in relation to the diameter of neck 1 of the blank, then there is an increase in the weight of the blank and, accordingly, the product, without improving its strength compared to the variant in which the diameter of body 2 of the blank changes (increases) by 10 - 40% in relation to the diameter of neck 1. The weight increase occurs because a change in the diameter of body 2 of the blank by more than 40% in relation to the diameter of neck 1 of the blank contributes to an increase in the amount of glass used in the manufacture of the blank. A change (increase) in the diameter of body 2 of the blank by 10 - 40% in relation to the diameter of neck 1 of the blank eliminates a sharp change in the parameters of the product blank, including a sharp decrease in the thickness of the walls of the product, which makes it possible to reduce the stress concentration in the glass of the product formed from the said blank. This also makes it possible to reduce the weight of the blank and, accordingly, the product. In other words, changing the diameter of the body 2 of the blank by 10 - 40% in relation to the diameter of the neck 1 of the blank additionally contributes to increasing the strength of the product made from the said blank, with a decrease in its weight. In this case, the diameter of the body 2 preferably varies within the range from 23 mm to 41 mm from the neck 1 to the bottom part 3 of the blank, but not limited to this, and the diameter of the neck 1 of the blank is 23 - 28 mm, but not limited to this. For example, in one of the embodiments of the invention, when manufacturing a product with a volume of 450 ml, the diameter of the body 2 of the blank at the junction of the body 2 with the neck 1 can be 24.8 mm (at the first extremum of the wave-like curve, which is its minimum L₁), in the second extremum of L₂wavy curve diameter of the body 2, marked with position d₂, can be 34.5 mm, at the third extreme L₃wavy curve diameter of the body 2, marked with position d₃, can be 31 mm, case diameter 2, marked with position d₄, in the connection of the body 2 with the bottom part 3 can be 38 mm (at the fourth extremum of the wave-like curve, which is its maximum L₄).

[00051] In order to impart additional strength to the product made from the present blank, with a decrease in its weight, the height of the bottom part 3 of the blank may be 4 - 15% of the height of the body 2 of the blank. The bottom part 3 of the blank passes into the bottom part 31 of the glass product, and the bottom part 31 of the glass product is subject to large mechanical effects, leading to its deformation. In this regard, it is necessary to additionally strengthen the bottom part 31 of the product. Additional strengthening of the bottom part 31 of the product is ensured by increasing the thickness of the walls of the bottom part 31 of the product, therefore, in order to create a glass product that has a low weight, while maintaining its high strength, the height of the bottom part 3 of the blank may be no more than 15% of the height of the body 2 of the blank. In this case, the thickness of the walls of the bottom part 3 of the blank preferably varies within the range from 6 mm to 10 mm, but is not limited thereto. The specified thickness is measured from the plunger tip to the outer part of the bottom. If the height of the bottom part 3 of the blank is more than 15% of the height of the body 2 of the blank, then the mass of the blank increases, and therefore the entire product as a whole, without improving its strength compared to the variant in which the height of the bottom part 3 of the blank is no more than 15% of the height of the body 2 of the blank. As noted earlier, the ratio of the height of the bottom part 3 of the blank and the height of the body 2 of the blank determines the ratio of the height of the bottom part 31 of the product and the height of the entire product. Preferably, in this case, the height of the bottom part 3 of the blank is 4 - 15% of the height of the body 2 of the blank to maintain the necessary proportions of the glass product. With the specified ratio of the height of the bottom part 3 of the workpiece and the height of the body 2 of the workpiece, the height of the body 2 of the workpiece is preferably 125 - 145 mm, but not limited to this, and the height of the bottom part 3 of the workpiece is 5 - 22 mm, but not limited to this.

[00052] In order to impart additional strength to the product manufactured from the present blank, the body 2 of the blank is made so that the maximum of the wave-like curve can be located at a distance of 30 - 60 mm from the adjacent minimum of the wave-like curve. The distance between adjacent extremes of the wave-like curve of the blank depends on the height of the product and its geometry. If the distance between the maximum of the wave-like curve of the body 2 and the adjacent minimum of the wave-like curve is less than 30 mm, then when manufacturing a product from the said blank by means of press-blowing, a sharp decrease in the wall thickness occurs in the sections of the product from the junction of the neck 11 with the shoulders 21 to the junction of the cylindrical body 22 of the product with the bottom part 31, which leads to a deterioration in its strength. If the distance between the maximum and the adjacent minimum of the wave-like curve of the body 2 of the blank is more than 60 mm, then the amount of glass used to obtain the blank increases without improving the strength of the product obtained from it, compared to the variant in which the distance between the maximum of the wave-like curve of the body 2 and the adjacent minimum of the wave-like curve is 30 - 60 mm. The distance between the maximum and the adjacent minimum of the wave-like curve of the body 2 of the blank, which is 30 - 60 mm, ensures a smooth distribution of the glass along the walls of the body 2 of the blank, ensuring a decrease in the stress concentration in the glass of the product obtained from the blank. Accordingly, a decrease in the stress concentration in the glass of the product makes it possible to increase the resistance of the glass product made from the said blank to various impacts, for example, mechanical ones, that is, it additionally increases its strength. In Fig. 1, Fig. 2 shows variants of a schematic view of a longitudinal section of a narrow-neck glass product blank, in which the wavy curve of the body 2 has 4 extremes: 2 maximums and 2 minimums. For example, in Fig. 2 it is shown by position h₁distance between minimum L₁(connecting the neck of the 1st workpiece with the body of the 2nd workpiece) and the maximum L₂wavy curve of the body 2, which can be 57 mm, and the position h₂- distance between maximum L₂and minimum L₃wavy curve of the body 2, which can be 37.5 mm.

[00053] The present technical solution also concerns a narrow-necked glass product made from a blank and consisting of a connected neck, shoulders, cylindrical body, and bottom. The blank of a narrow-necked glass product consists of a neck, a bottom, and a body connected to the neck and the bottom. Moreover, the body of the blank is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes. In this case, the thickness of the walls of the blank body is made variable in such a way that the thickness of the walls of the blank body increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the blank body at the maximum of the wave-like curve is 8 - 50% greater than the thickness of the walls of its body at the minimum of the wave-like curve. In this case, the thickness of the walls of the product is made variable in such a way that the ratio of the maximum wall thickness of the product to the minimum wall thickness is no more than 2.5.

[00054] Variants of a schematic view of a longitudinal section of a blank of a narrow-necked glass product are shown in Fig. 1, Fig. 2. The production of a blank of a narrow-necked product and, accordingly, a narrow-necked product, from glass is due to the fact that it has chemical inertness: it does not change the taste, aroma and color of various drinks that are in the product made from the specified material, since glass does not react with the constituent components of drinks. For the production of a blank of a glass product and, accordingly, a glass product, various types of glass can be used, for example, transparent, frosted, flint, amber or dark brown tinted glass, but not limited to this. For example, amber or dark brown glass can be used for additional protection of drinks from the effects of the environment, which can deteriorate or change color when exposed to light.

[00055] The blank of a narrow-neck glass product consists of a neck 1, a bottom part 3 and a body 2 connected to the neck 1 and the bottom part 3. The neck 1, the bottom part 3 and the body 2 connected to the neck 1 and the bottom part 3 of the blank of a narrow-neck glass product are necessary structural elements of the blank for creating a solid and hollow blank of a glass product.

[00056] The presence of a narrow neck in the product is due to the fact that the narrow-neck press-blowing method is used to manufacture the glass product, which helps to reduce the weight of the glass product.

[00057] In this case, in order to create a hollow article with a narrow neck, it is necessary to make the body 2 of the blank, from which the article is made, in the form of a body of revolution of a geometric figure. Fig. 1 shows a variant of a schematic view in longitudinal section of the blank of a narrow-necked glass article, where the cavity 4 of the blank of the narrow-necked glass article is marked, which is formed by placing a plunger in a drop of glass, the geometry of which exactly repeats the geometry of the formed cavity 4. In this case, in order to ensure a smooth and specified distribution along the perimeter of the glass blank, which consists in the fact that the thickness of the walls of the body of the blank is made variable, and which helps to reduce the concentration of stresses in the glass of the article obtained from the specified blank, the body 2 of the blank is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extremes. A decrease in the concentration of stresses in the glass of the article makes it possible to improve the strength of the article. Thus, the execution of the body 2 of the blank in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extrema, makes it possible to impart strength to the product. The number of extrema of the wave-like curve of the body 2 of the blank directly depends on what geometry must be imparted to the glass product made from it. The number of extrema of the wave-like curve of the body 2 of the blank can be 2 - 4. Fig. 1, Fig. 2 show variants of a schematic view of a longitudinal section of a blank of a narrow-necked glass product, according to which the wave-like curve of the body 2 has 4 extrema: 2 maximums and 2 minimums. In Fig. 1, each extremum is marked with positions L₁, L₂, L₃, L₄: L₁, L₃illustrate the minima of the wave-like curve, L₂, L₄illustrate the maxima of the wave-like curve. For example, in Fig. 2 it is shown by position h₁the distance between the minimum (the connection of the neck of the 1st blank with the body of the 2nd blank) and the maximum of the wave-like curve of the body of the 2nd blank, and the position h₂- the distance between the maximum and minimum of the wave-like curve of body 2.

[00058] In order to reduce the weight of a narrow-neck glass product, it is necessary to reduce the weight of its blank. The weight of the blank of a narrow-neck glass product is reduced by changing the thickness of the walls of the blank along its entire perimeter. In other words, in order to reduce the weight of the blank, it is necessary to provide different wall thicknesses of the blank of the product depending on the resistance of the walls of the product to deformations. It is mainly necessary to provide different wall thicknesses of the body 2 of the blank, since the greater part of the blank of the product falls on its body 2, which has a greater effect on the weight of the blank, and, accordingly, the product. It should be noted that when forming a narrow-neck glass product, the variant of which is shown in Fig. 3, from the blank, the minimum L ₃ of the wave-like curve of the body 2 of the blank passes into the section of the product located between the connection of the shoulders 21 with the cylindrical body 22 of the product and the connection of the cylindrical body 22 of the product with its bottom part 31. Also, the minimum of the wave-like curve of the body L ₁ , which is the connection of the body 2 and the neck 1 of the blank, passes into the connection of the neck 11 of the product with the shoulders 21 of the product. That is, in any case, when forming a narrow-necked glass product from the blank, the minimum of the wave-like curve of the body 2 of the blank passes into the section of the product that is subject to minimal deformation under any impact on it, for example, mechanical. Moreover, when forming a narrow-neck glass article from a blank, the maxima L ₂ , L ₄ of the wave-like curve of the body 2 of the blank pass into the sections of the contact diameters of the article, i.e. L ₂ passes into the connection of the shoulders 21 with the cylindrical body 22 of the article and L ₄ passes into the connection of the cylindrical body 22 of the article with the bottom part 31. The specified areas of the article, in which its structural elements 21, 22, 31 are connected to each other, have low resistance to deformations. In this regard, the specified sections of the article must be additionally strengthened to improve the resistance of the article to deformations and, accordingly, to increase the strength of the article as a whole. Thus, in order to reduce the weight of the article while maintaining its strength, it is necessary that the thickness of the walls of the body 2 at the minimum of the wave-like curve of the body 2 be less than the thickness of the walls of the body 2 at the maximum of the wave-like curve. In this connection, the thickness of the walls of the body 2 of the blank is made variable in such a way that the thickness of the walls of the body 2 increases from the minimum of the wave-like curve to the maximum of the wave-like curve. For clarity, the change in the thickness of the walls of the body 2, as well as the bottom part 3 of the blank, is illustrated in Fig. 1 by hatching. That is, the thickness of the walls of the blank increases from the area of the blank, passing into the area of the product, possessing high resistance to deformations, to the area of the blank, passing into the area of the product, possessing low resistance to deformations. It should be noted that the increase in the thickness of the walls of the blank occurs smoothly, without sharp jumps, in order to reduce the concentration of stresses in the glass of the product made from the blank.

[00059] In order to reduce the mass of the product blank, the amount of glass used for its manufacture is reduced, i.e. the thickness of the walls of the body 2 of the blank is reduced, but at the same time it is necessary to maintain the high strength of the product when reducing the amount of glass used. For this purpose, the thickness of the walls of the body 2 increases from the minimum of the wave-like curve L ₁ , L ₃ to the maximum of the wave-like curve L ₂ , L ₄ so that the thickness of the walls of the body 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body 2 at the minimum of the wave-like curve. The thickness of the walls increases from the region of the blank transitioning into the region of the product possessing high resistance to deformations to the region of the blank transitioning into the region of the product possessing low resistance to deformations. It should be noted that first, the minimum possible thickness of the workpiece walls is selected for sections that transition into sections of the product that are minimally subject to deformation caused by various types of impacts, i.e., the minimum thickness of the workpiece walls is selected for those sections that transition into sections of the product that are highly resistant to deformation. And then, based on the selected minimum possible thickness of the workpiece walls, the change in wall thickness is ensured along the entire perimeter of the workpiece, primarily, the body 2 of the workpiece. In this case, if for a workpiece with reduced weight the thickness of the walls of the body 2 of the workpiece at the maximum of the wave-like curve exceeds by less than 8% the thickness of the walls at the minimum of the wave-like curve of the body 2, then the strength of the product manufactured from the described workpiece is reduced, since the created thickness of the walls of the body 2 of the workpiece at the maximum of the wave-like curve of the body 2 is not sufficient to impart high stability to the section of the product that corresponds to the position of the maximum of the wave-like curve of the body 2 L ₂ , L ₄ , to various types of impacts leading to its deformation. In this case, if the thickness of the workpiece walls at the maximum of the wave-like curve exceeds by more than 50% the thickness of the walls at the minimum of the wave-like curve of the housing 2, an increase in the mass of the workpiece of the product occurs, and, therefore, of the product manufactured from the said workpiece, without improving the strength of the product compared to the variant in which the thickness of the walls of housing 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of housing 2 at the minimum of the wave-like curve. In this regard, in order to ensure a decrease in the mass of the product while maintaining its strength, the thickness of the walls of housing 2 increases from the minimum of the wave-like curve to the maximum of the wave-like curve so that the thickness of the walls of housing 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of housing 2 at the minimum of the wave-like curve. With the said ratio of the thickness of the walls of the workpiece at the minima and maxima of the wave-like curve, a product is obtained that is characterized by a minimum internal pressure before failure of 10 bar; and which is resistant to a vertical load of up to 500 kgf and resistant to an impact load of up to 76 cm/s. In this case, in addition to reducing the amount of glass used in the manufacture of the product blank, which helps to reduce the weight of the product formed from the said blank, the thickness of the walls of the body 2 at the minimum L ₃ of the wave curve can be 7 - 10 mm, and the thickness of the walls of the body 2 at the maximum L ₂ , L ₄ of the wave curve can be 9 - 13 mm, the thickness of the walls of the neck 1 of the blank can vary from 3 - 3.5 mm at the beginning of the neck 1 of the blank to 7 - 10 mm at the junction of the neck 1 with the body 2 of the blank. This, for example, makes it possible to reduce the weight of a narrow-necked glass product with a volume of 450 ml to 230 grams.

[00060] Preferably, a real narrow-neck glass product is manufactured by narrow-neck press-blowing. The said technology is as follows: after a drop of hot glass enters a rough mold, a blank is pressed in said mold by raising a piston (plunger), the rough mold is opened and the blank is moved to a finishing mold, the blank is fixed in the finishing mold for reheating it, the finishing blank is blown and cooled internally, then the finishing mold is opened and the finishing blank is moved for processing it with a chemical solution and annealing, thus producing a glass product with a narrow neck.

[00061] The present narrow-neck glass product, a variant of the schematic view of the longitudinal section of which is shown in Fig. 3, consists of a connected neck 11, shoulders 21, cylindrical body 22, bottom part 31. The connected neck 11, shoulders 21, cylindrical body 22, bottom part 31 of the narrow-neck glass product are necessary structural elements for creating a solid and hollow glass product.

[00062] Due to the fact that the thickness of the walls of the body 2 of the blank is made variable in such a way that the thickness of the walls of the body 2 increases from the minimum of the wave-like curve to the maximum of the wave-like curve, and the thickness of the walls of the body 2 at the maximum of the wave-like curve is greater by 8 - 50% than the thickness of the walls of the body 2 at the minimum of the wave-like curve, a decrease in the weight of the glass product formed from the said blank is ensured, while maintaining its strength. However, when forming a glass product from the described blank, in order to maintain its strength, a different thickness of the walls of the product is also ensured. In this regard, the thickness of the walls of the product is made variable. It should be noted that the change in the thickness of the walls of the product occurs smoothly, without sharp jumps, in order to reduce the concentration of stresses in the glass of the product, leading to a decrease in the strength of the product. In order to ensure a decrease in the weight of the product, which has high strength due to walls of different thickness along its perimeter, it is necessary that the ratio of the maximum thickness of the walls of the product to the minimum thickness of the walls of the product be no more than 2.5. The specified requirement for the ratio of the maximum and minimum wall thicknesses of a product with reduced weight is necessary to prevent excessive differences in the thickness of its walls. Excessive differences in the thickness of the product walls reduce its strength. It has also been experimentally determined that if the ratio of the maximum wall thickness of the product to the minimum wall thickness of the product is more than 2.5, then the weight of the product increases compared to the option where the ratio of the maximum wall thickness of the product to the minimum wall thickness of the product is no more than 2.5. With a ratio of the maximum wall thickness of the product to the minimum wall thickness of the product of no more than 2.5, a product is obtained that is characterized by a minimum internal pressure before failure of 12 bar; and which is resistant to a vertical load of up to 500 kgf and resistant to an impact load of up to 76 cm/s. To further improve the strength of a narrow-neck glass product, the minimum wall thickness of the product can be 1 - 1.5 mm.

[00063] The diameter of the shoulders 21 of the product from the connection of the neck 11 with the shoulders 21 to the connection of the shoulders 21 with the cylindrical body 22 can increase by no more than 3 times in relation to the diameter of the neck 11 of the product, preferably the diameter of the shoulders 21 of the product from the connection of the neck 11 with the shoulders 21 to the connection of the shoulders 21 with the cylindrical body 22 increases by 1.2 - 3 times in relation to the diameter of the neck 11 of the product. Preferably, the height of the shoulders 21 of the product is 105 - 135 mm, but not limited to this, and the height of the cylindrical body 22 is 90 - 117 mm, but not limited to this. In order to form a narrow-necked product, it is necessary that the diameter of the neck 11 and the diameter of the cylindrical body 22 differ, and in the case where the diameter of the shoulders 21 of the product from the junction of the neck 11 with the shoulders 21 to the junction of the shoulders 21 with the cylindrical body 22 increases more than 3 times in relation to the diameter of the neck 11 of the product, the stress concentration in the glass of the product increases in the section of the product from the junction of the neck 11 with the shoulders 21 to the junction of the shoulders 21 with the cylindrical body 22. An increase in the stress concentration in the glass of the product leads to a decrease in the strength of the product. An increase in the diameter of the shoulders 21 of the product from the junction of the neck 11 with the shoulders 21 to the junction of the shoulders 21 with the cylindrical body 22 by no more than 3 times in relation to the diameter of the neck 11 of the product eliminates a sharp change in the parameters of the product, making it possible to reduce the stress concentration in the glass of the product, which leads to a deterioration in its strength. In other words, the specified change in the diameter of the shoulders 21 of the glass product makes it possible to manufacture a narrow-necked product with a reduced weight while maintaining its strength. In this case, the diameter of the shoulders 21 of the product from the connection of the neck 11 with the shoulders 21 to the connection of the shoulders 21 with the cylindrical body 22 preferably increases in the range from 23 mm to 68 mm, but is not limited to this, and the diameter of the neck 11 of the product, marked in Fig. 3 by the position D ₁ , is 23 - 28 mm, but is not limited to this. Since the shoulders 21 of the glass product pass into the part of the product that is the cylindrical body 22, then in the case in which the diameter of the shoulders 21 from the connection of the neck 11 with the shoulders 21 to the connection of the shoulders 21 with the cylindrical body 22 increases in the range from 23 mm to 68 mm, the diameter of the cylindrical body 22 of the product, marked by the position D ₄ in Fig. 3, is 60 - 68 mm, but is not limited to this. Preferably, in order to eliminate sharp transitions from the shoulders 21 of the product to the cylindrical body 22 when approaching the junction of the shoulders 21 with the cylindrical body 22, the shoulders 21 are made curved, wherein the preferred radius of curvature of the transition, marked by position R ₂ in Fig. 3, is 30 - 35 mm. Preferably, in order to eliminate sharp transitions from the cylindrical body 22 of the product to the bottom part 31 of the product when approaching the junction of the cylindrical body 22 with the bottom part 31 of the product, the bottom part 31 is made curved, wherein the preferred radius of curvature of the transition, marked by position R ₃ in Fig. 3, is 26 - 30 mm. Elimination of sharp transitions between the structural elements of the product makes it possible to improve its strength, and the specified ranges of the radii of curvature of the transitions provide an additional reduction in the weight of the product.

[00064] The bottom part 31 of the glass article can be made flat or concave inward of the article. Preferably, the bottom part 31 of the article is made concave inward of the article, since this provides an additional increase in the resistance of the article to deformations arising from mechanical action on the article and/or arising from internal pressure in the article. An additional increase in the resistance of the article to said deformations occurs due to an increase in the length of the line of action of the deforming force on the material of the article and a redistribution of the force vector along its projections onto the curved bottom part 31 of the article in the direction of its inner part. In one of the preferred embodiments of the present narrow-neck glass article, the diameter of the bottom part 31 decreases from the connection of the bottom part 31 with the cylindrical body 22 to the bottom of the article. This helps to further reduce the weight of the article. In this case, the diameter of the bottom part 31 at the junction of the bottom part 31 with the cylindrical body 22 can be 63 - 66 mm (in Fig. 3 marked with position D ₃ ), and the diameter of the bottom part 31 at the bottom of the product can be 59 - 62 mm (in Fig. 3 marked with position D ₅ ).

[00065] Thus, the present blank of a narrow-neck glass product and the present narrow-neck glass product made from said blank provide for a reduction in the weight of the product while maintaining its strength.

[00066] The present application materials present a preferred disclosure of the implementation of the claimed technical solution, which should not be used as limiting other, particular embodiments of its implementation that do not go beyond the requested scope of legal protection and are obvious to specialists in the relevant field of technology.

Claims (28)

1. A blank of a narrow-necked glass product consisting of: - throat; - bottom part; - a body connected to the neck and the bottom, wherein the body is made in the form of a body of revolution of a geometric figure, which is limited by a wave-like curve having extrema, in this case, the thickness of the walls of the housing is made variable in such a way that the thickness of the walls of the housing increases from the minimum of the wave-like curve to the maximum of the wave-like curve, in this case, the thickness of the body walls at the maximum of the wave curve is 8-50% greater than the thickness of the body walls at the minimum of the wave curve. 2. A blank for a narrow-necked glass product according to paragraph 1, characterized in that the change in the diameter of the body is 10-40% in relation to the diameter of the neck. 3. A blank for a narrow-necked glass product according to item 2, characterized in that the diameter of the body varies within the range from 23 to 41 mm from the neck to the bottom. 4. A blank for a narrow-necked glass product according to item 2, characterized in that the neck diameter is 23-28 mm. 5. A blank for a narrow-necked glass product according to item 1, characterized in that the height of the bottom part is 4-15% of the height of the body. 6. A blank for a narrow-necked glass product according to item 5, characterized in that the height of the body is 125-145 mm. 7. A blank for a narrow-necked glass product according to item 5, characterized in that the height of the bottom part is 5-22 mm. 8. A blank for a narrow-necked glass product according to item 1, characterized in that the thickness of the walls of the body at the minimum of the wave curve is 7-10 mm. 9. A blank for a narrow-necked glass product according to item 1, characterized in that the thickness of the walls of the body at the maximum of the wave curve is 9-13 mm. 10. A blank for a narrow-neck glass product according to item 1, characterized in that the maximum of the wave curve is located at a distance of 30-60 mm from the adjacent minimum of the wave curve. 11. A narrow-necked glass product made from a blank according to item 1 and consisting of the following connected parts: - throat; - hangers; - cylindrical body; - bottom part, in this case, the wall thickness of the product is made variable in such a way that the ratio of the maximum wall thickness to the minimum wall thickness is no more than 2.5. 12. A narrow-necked glass product according to item 11, characterized in that the diameter of the shoulders from the junction of the neck with the shoulders to the junction of the shoulders with the cylindrical body increases by no more than 3 times in relation to the diameter of the neck. 13. A narrow-neck glass product according to item 12, characterized in that the diameter of the shoulders from the junction of the neck with the shoulders to the junction of the shoulders with the cylindrical body increases within the range of 23 to 68 mm. 14. A narrow-necked glass product according to item 13, characterized in that the neck diameter is 23-28 mm. 15. A narrow-neck glass product according to item 13, characterized in that the diameter of the cylindrical body is 60-68 mm. 16. A narrow-necked glass product according to item 11, characterized in that the bottom part is made concave inward of the product. 17. A narrow-neck glass product according to item 11, characterized in that the minimum wall thickness of the product is 1-1.5 mm.