Hot canning bottle capable of keeping integral structure stable under heating condition

Abstract

The utility model relates to the technical field of container bottles, mainly relates to a beverage PET bottle, in particular to a hot canning bottle capable of keeping the overall structure stable under the heating condition, various small block face structures are evenly distributed on a bottle shoulder section and a bottle body lower section, a protruding strip is formed by three or four inclined faces, and the protruding strip is provided with a plurality of small block face structures. The adjacent sides of the three or four inclined planes are common sides, and the edge strips form seamed edges which are uniformly distributed all over the bottle shoulder section and a plurality of convex inclined planes and inclined edges due to different inclination directions of the inclined planes; by means of the structural design, the upper portion and the lower portion of the whole bottle body are evenly and fully distributed with the reinforcing edge net structures formed by alternately connecting the small inclined faces, due to the net-shaped edge strip result, the stress structure of the local area of the bottle body is refined, and the heating pressure resistance and the deformation resistance of the whole bottle body and the local area of the bottle body are improved. In the hot canning process, the stability of the bottle-shaped structure can be comprehensively improved, the situation of thermal deformation in a local area is avoided, and the product quality control is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of container bottles, mainly to a beverage PET bottle, and in particular to a hot-canned bottle capable of maintaining a stable overall structure under heating conditions. Background Art

[0002] Hot filling is a food and beverage packaging technique used to sterilize and preserve products. In this process, products (such as juices, teas, and seasonings) are filled into containers at high temperatures and then sealed. This technique typically involves heating the product to temperatures exceeding 100°C and then cooling it to 85-95°C before filling. The high temperature helps kill or inhibit the growth of microorganisms, thereby extending the product's shelf life.

[0003] PET (polyethylene terephthalate) beverage bottles are made of the plastic material PET, which has good transparency, chemical resistance, high strength, light weight and recyclability. PET material is also very suitable for disposable beverage packaging and has good safety and hygiene.

[0004] While hot filling technology offers many advantages, it can present challenges when using PET bottles. During the hot filling process, the PET material can soften due to the high temperatures, leading to a decrease in bottle strength and deformation. This is particularly true in vulnerable areas of the bottle, where high temperatures can soften or deform them. Deformation at the bottle neck can compromise the seal of the cap, leading to the risk of airborne contamination or beverage leakage during subsequent processing, storage, transportation, and distribution.

[0005] One of the main problems is that the physical properties of PET deteriorate at high temperatures, especially when the temperature is close to the glass transition temperature of PET (usually 70-80°C). If the design of the PET bottle does not take into account the special requirements of hot filling (such as strengthening the bottleneck and the structure of the bottle body), it is easy to deform under the action of temperature and pressure. In order to solve these problems, the performance of the bottle can be improved by using modified PET materials (such as adding heat-resistant additives), optimizing the bottle body design (including thickening the bottle body, changing the bottle body shape, etc.), and adjusting the filling and cooling processes. These methods can improve the stability and sealing of PET bottles during hot filling. In the existing technology, there are also some bottle designs that are used to avoid the problem of heat deformation through bottle body design, but these bottle types are usually only improved on the bottle body or the bottom of the bottle, and the overall integrated design is insufficient, resulting in deformation in local areas, which reduces the pass rate. Summary of the Invention

[0006] To address the deficiencies of the above-mentioned prior art, the inventors have developed, designed, and improved a new bottle structure, which can comprehensively improve the stability of the bottle structure during hot filling, avoid thermal deformation in local areas, and effectively improve product quality control. Specifically, the present invention is implemented as follows:

[0007] A hot-filled bottle capable of maintaining a stable overall structure under heating conditions, the structure of which comprises:

[0008] The bottle shoulder section is connected by a number of equal and obliquely distributed trapezoidal strips, forming a truncated cone shape. Each trapezoidal strip has three edges consisting of three inclined surfaces.

[0009] The middle section of the bottle body is provided with a plurality of vertical and evenly distributed inner concave frames, and a plurality of reinforcing ribs are provided in the inner concave frames;

[0010] The lower part of the bottle body is in the shape of a waisted shape in the middle, and the surface shape is composed of several large and small triangular inclined surfaces spliced ​​together in sequence, and the overall shape is inclined in a regular distribution, and the edges of the triangular inclined surfaces connected to each other form edges;

[0011] The bottom of the bottle includes several bottom blocks with convex and concave surfaces distributed alternately. The bottom blocks extend from the side to the bottom surface. The bottom surface is circular at the center and has several radially distributed concave reinforcing ridges. A concave ring portion is also provided between the circular ground and the blocks.

[0012] Furthermore, the upper and lower ends of the middle section of the bottle body are respectively connected with the bottle shoulder section and the lower section of the bottle body, and are provided with inwardly concave multi-layered stepped annular surfaces.

[0013] Furthermore, a transition section is provided at the lower edge of the bottle shoulder section and the upper edge of the lower section of the bottle body. The transition section is composed of a plurality of small triangular inclined surfaces and four-sided trapezoidal inclined surfaces that are interlaced and connected in a ring shape.

[0014] Furthermore, each four-sided trapezoidal inclined surface is connected to a triangular inclined surface at the bottom of the bottle shoulder section and shares a common long side, or is connected to a triangular inclined surface at the top of the lower section of the bottle body and shares a common long side.

[0015] Furthermore, the inner concave frame is a rounded rectangular shape, and the edge of the rectangle is concave inward to form a circle of flange. The reinforcing ribs include: vertical ribs protruding inward or outward in the middle of the inner frame, and the upper and lower ends of the vertical ribs are connected to the horizontally arranged convex arc segments.

[0016] Furthermore, the lower section of the bottle body is divided into two parts along the waistline, the upper part is composed of a number of obtuse triangle triangular slopes connected to each other in an up-down cycle; the lower part is composed of a number of obtuse triangle triangular slopes connected to each other in an up-up-down-down cycle; and the triangular slopes at the midline connecting the upper and lower parts have a common short side.

[0017] The working principle of the present invention is introduced as follows: in the hot-filled bottle structure of the present invention, various small block structures are evenly distributed starting from the bottle shoulder section below the bottle mouth to the middle section, lower section of the bottle body and the bottom of the bottle, that is, triangular inclined surfaces or quadrangular inclined surfaces are arranged with each other and distributed in a regular and orderly manner. For example, the bottle shoulder section takes each trapezoidal strip area as a unit. Within a unit area, it is composed of three inclined surfaces, and the adjacent sides of these three inclined surfaces are common sides. These side strips constitute edges evenly distributed throughout the bottle shoulder section because of the different inclination directions of the inclined surfaces; this special shape design is to resist the change in liquid volume caused by thermal expansion and contraction of the beverage, so as to maintain the main part of the overall appearance of the bottle body without deformation, because the design of the reinforcing ribs and concave-convex surface can absorb the above-mentioned physical changes in liquid volume. The concave-convex surface part is to resist the volume change, and the reinforcing ribs are to maintain the shape of the bottle body and enhance the vertical support force. Similarly, the middle section of the bottle body is a cylindrical structure. The concave frame above it forms a ridged edge structure with a surface height difference due to its inwardly concave edge. Combined with the internal reinforcing ribs, the whole body forms several vertically distributed prismatic structures, which strengthen and improve the strength of the bottle body. The lower section of the bottle body is a longer area, which uses two opposing frustum-shaped shapes to connect to the waistline. Although it is a single piece, it can be structurally divided into two upper and lower sections. Each section is composed of a combination of relatively slender obtuse triangles, forming an oblique distribution. This oblique direction continues from the upper section to the lower section. Overall, a strip-shaped oblique ridge structure with a regular oblique arrangement composed of several triangular inclined surfaces is realized, and is evenly distributed throughout the bottle body. This structural design makes the entire bottle body evenly covered with a reinforcing ridge network structure formed by alternating small inclined surfaces. This mesh ridge strip refines the stress structure of the local area of ​​the bottle body, improving its overall and local compressive resistance and deformation resistance. This complex geometric structure (such as bevels and prismatic structures) can effectively disperse stress and reduce material fatigue. In particular, the edges in the structure can increase the local stiffness of the material, thereby resisting the thermal stress generated during the hot filling process. The complex geometric design increases the surface contact area between the material and the environment, which may contribute to faster heat dissipation and more uniform temperature distribution, thereby reducing the material stress caused by large temperature differences.

[0018] The beneficial technical effects of the present invention are as follows: The structure of the present invention utilizes a variety of bevels, concave frames, and edge structures. These designs not only enhance the aesthetics of the bottle but also primarily improve the physical properties of the PET bottle. The arrangement and design of these various structures increase the overall stability and strength of the bottle, particularly in terms of its resistance to pressure and deformation. Thermal deformation of the bottle's surface area is avoided. The overall structure of the present invention not only enhances the aesthetics of the bottle's exterior, but also, the multiple flutes and bevels distributed in an annular pattern around the entire bottle body create a masonry-like light and shadow effect of multi-faceted refraction, transmission, and diffusion of transparent liquids, enhancing the aesthetics of clear beverages. The varying thickness of the waist enhances the light and shadow effects of varying color depths, making colored liquids more three-dimensional and aesthetically pleasing. Furthermore, the edges formed by these bevels increase the bottle's resistance to distortion, making it ideal for hot-filled containers. This structure exhibits minimal overall deformation during thermal deformation, which gradually recovers upon cooling, preventing significant deformation of the overall shape or localized areas. This effectively improves product stability and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the structure of the hot can bottling device of the utility model;

[0020] Figure 2 This is a structural stereogram of the hot can bottling device of the present invention;

[0021] Figure 3 This is a top view of the hot can bottling device of the present invention;

[0022] Figure 4 This is a bottom view of the hot can bottling device of the present invention;

[0023] Figure 5 This is a schematic diagram of the hot filling process of hot filling bottles of the utility model;

[0024] in:

[0025] 1—bottle shoulder, 11—four-sided trapezoidal slope, 12—edge;

[0026] 2—middle section of the bottle body, 21—inner concave frame, 22—vertical ribs, 23—outer convex arc segment;

[0027] 3—bottom of the bottle, 31—triangular slope;

[0028] 4—bottom of the bottle, 41—bottom block surface, 42—circular bottom surface, 43—inward concave reinforcement edge, 44—ring portion;

[0029] 5—Multi-layer stepped annulus;

[0030] 6—Transition section. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0032] Example 1: Figure 1-4 As shown, a hot-filled bottle capable of maintaining a stable overall structure under heating conditions has the following structure:

[0033] The bottle shoulder section 1 is composed of a number of equally spaced, obliquely distributed trapezoidal strips interconnected, forming a frustum-shaped overall structure. Each trapezoidal strip includes three edges 12 formed by three inclined surfaces. The design of the inclined surfaces and edges 12 allows for thermal expansion changes when subjected to heat from the liquid in the bottle. The changing forces are limited by the edges 12, thereby avoiding localized deformation. The frustum-shaped bottle shoulder design helps evenly distribute stress during thermal expansion, reducing deformation caused by thermal expansion and contraction.

[0034] The middle section 2 of the bottle body is provided with a plurality of vertical and evenly distributed inner concave frames 21, and a plurality of reinforcing ribs are provided inside the inner concave frames 21; the inner concave frames 21 and the reinforcing ribs provide additional structural support, so that the bottle body can better resist the internal changing force during the high-temperature filling process, and prevent the bottle body from deforming and tilting.

[0035] The lower section 3 of the bottle body is generally waisted toward the middle, and its surface is composed of several large and small triangular bevels 31 that are sequentially spliced ​​together and arranged in a regular oblique pattern. The interconnected edges of the triangular bevels 31 form the edges 12. The regularly arranged oblique triangular bevels 31 help to more evenly distribute the forces of thermal deformation during hot filling, preventing localized deformation. The waisted design provides consumers with a more secure grip, and the bottle body structure takes into account both functionality and aesthetics.

[0036] The bottle base 4 comprises several alternating convex and concave bottom blocks 41. These blocks extend from the sides to the bottom, forming a circular base 42 at the center. Several radially distributed inward-facing reinforcing ridges 43 are also located. A concave ring 44 is also located between the circular base and the blocks. The convex and concave blocks help increase the bottom's compressive strength and support capacity. The circular base 42, inward-facing reinforcing ridges 43, and ring 44 also ensure the stability of the bottom structure under the effects of gravity and internal thermal fluctuations, resisting any bulging or indentation of the bottle.

[0037] Preferably, the upper and lower ends of the middle section 2 are respectively connected to the shoulder section 1 and the lower section 3 of the bottle body, and are further provided with an inwardly concave multi-layered stepped annular surface 5. The structure of the multi-layered stepped annular surface 5 also uses an annular stepped structure in a limited local area to form an annular ridge, which plays a role in strengthening support.

[0038] Preferably, a transition section 6 is provided at the lower edge of the shoulder section 1 and the upper edge of the lower body section 3. This transition section 6 is comprised of a plurality of small triangular bevels 31 and four-sided trapezoidal bevels 11, interlaced and connected in a circular pattern. Preferably, each four-sided trapezoidal bevel 11 is connected to a triangular bevel 31 at the bottom of the shoulder section 1, sharing a common long side, or is connected to a triangular bevel 31 at the top of the lower body section 3, sharing a common long side. The small triangular bevels 31 within the transition section 6 serve to connect the two raised bevels with the area of ​​the middle body section 2, serving as an inwardly retracted connecting structure. They also serve to increase the number and structure of ribs, further enhancing strength.

[0039] Preferably, the inner concave frame 21 is rectangular with rounded corners, and the edges of the rectangle are recessed inward to form a flange. The reinforcing ribs include vertical ribs 22 protruding inward or outward from the center of the inner frame. The upper and lower ends of the vertical ribs 22 are connected to transversely arranged convex arc segments 23. Generally, the middle section 2 of the bottle body is used as the area for applying the bottle label. Therefore, its surface should be relatively flat. To ensure that the label is adhered smoothly and the overall strength of the middle section 2 is maintained, several rounded rectangular inner concave frames 21 are designed. The edge areas of the inner concave frames 21 provide relatively high support due to their structure, but the central area of ​​the inner concave frame 21 can also reduce stability due to its excessive flatness. Therefore, the inward or outward protruding vertical ribs 22 and convex arc segments 23 are designed. These structures enrich the central area of ​​the inner concave frame 21 and form a reinforcing structure, effectively improving the overall performance of the middle section 2.

[0040] Preferably, the lower section 3 of the bottle body is divided into two parts along the waistline. The upper part is composed of a plurality of obtuse-angled triangular slopes 31 interconnected in an up-down cycle; the lower part is composed of a plurality of obtuse-angled triangular slopes 31 interconnected in an up-up-down cycle. The triangular slopes 31 at the midline connecting the upper and lower parts share a common short side. This design structure allows the use of multiple interconnected triangular slopes 31 to construct a diagonally distributed, multi-group ribbed structure. In terms of overall shape, the number of edges 12 is increased, forming a network of edges 12. In small localized areas, several triangular slopes 31 can form oblique ribs protruding from the structural surface of the bottle body, serving as thicker and longer reinforcement ribs. This provides a more secure structural design for the area that first contacts the hot juice, making it more resistant to heat deformation in this important support area.

[0041] Through the design of the above multifaceted complex structure, such as Figure 5 As shown, PET bottles can better withstand the challenges of high temperature and pressure during hot filling, while also providing better physical properties and safety throughout the product's life cycle.

[0042] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A hot-filled bottle capable of maintaining a stable overall structure under heating conditions, characterized in that include: The bottle shoulder section (1) is connected by a plurality of equally distributed oblique trapezoidal strips, and is in the shape of a truncated cone. Each trapezoidal strip includes three edges (12) formed by three inclined surfaces. The middle section (2) of the bottle body is provided with a plurality of vertical and evenly distributed inner concave frames (21), and a plurality of reinforcing edges are provided in the inner concave frames (21); The lower section (3) of the bottle body is in the shape of a waisted shape in the middle, and the surface shape is composed of a plurality of large and small triangular inclined surfaces (31) sequentially connected to each other, and the overall shape is in a regular distribution of inclinations, and the edges of the triangular inclined surfaces (31) connected to each other constitute the edge (12); The bottle bottom (4) comprises a plurality of bottom blocks (41) with convex and concave portions alternately distributed. The bottom blocks (41) extend from the side to the bottom surface, and the bottom surface center forms a circular bottom surface (42). The bottom surface is provided with a plurality of radially distributed inwardly concave reinforcing ridges (43). A concave ring portion (44) is provided between the circular bottom surface and the blocks.

2. The hot-fill bottle according to claim 1, characterized in that The upper and lower ends of the middle section (2) of the bottle body are respectively connected to the bottle shoulder section (1) and the lower section (3) of the bottle body, and are further provided with inwardly concave multi-layered stepped annular surfaces (5).

3. The hot-fill bottle according to claim 1, characterized in that A transition section (6) is also provided at the lower edge of the bottle shoulder section (1) and the upper edge of the bottle body lower section (3). The transition section (6) is composed of a plurality of small triangular inclined surfaces (31) and four-sided trapezoidal inclined surfaces (11) which are sequentially connected in an interlaced manner in a ring shape.

4. The hot-fill bottle according to claim 3, characterized in that Each quadrilateral trapezoidal inclined surface (11) is connected to a triangular inclined surface (31) at the bottom of the bottle shoulder section (1) and shares the same long side, or is connected to a triangular inclined surface (31) at the top of the bottle body lower section (3) and shares the same long side.

5. The hot-fill bottle according to claim 1, characterized in that The inner concave frame (21) is in the shape of a rounded rectangle, with the edge of the rectangle concave inward to form a flange, and the reinforcing ribs include: a vertical rib (22) protruding inward or outward in the middle of the inner frame, and the upper and lower ends of the vertical rib (22) are connected to a transversely arranged outward convex arc segment (23).

6. The hot-fill bottle according to claim 1, characterized in that The lower section (3) of the bottle body is divided into two parts along the waistline, the upper part is composed of a plurality of obtuse-angled triangle triangular inclined surfaces (31) connected to each other in an up-down cycle; the lower part is composed of a plurality of obtuse-angled triangle triangular inclined surfaces (31) connected to each other in an up-up-down-down cycle; and the triangular inclined surfaces (31) located at the midline connecting the upper and lower parts have a common short side.

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