Sterile cold filling bottle type bottom structure

Abstract

The utility model discloses a sterile cold filling bottle type bottom structure, which relates to the technical field of bottle structures and comprises an inner concave curved surface in the center of a bottle bottom and a plurality of outer convex supporting claws uniformly distributed around the circumferential direction of the inner concave curved surface. The roots of the outwards-convex supporting claws are directly connected with the edges of the inwards-concave curved surfaces, the outwards-convex supporting claws are narrowed and then expanded from the roots to the tops in the radial direction, and the opposite side walls of the adjacent supporting claws are straight inclined planes which are gradually expanded from the bottoms to the tops; and a plurality of outer convex rib parts which are uniformly distributed around the center are arranged on the surface of the concave curved surface. According to the structure, the bottom supporting strength is enhanced through the outwards-protruding supporting claws, the outwards-protruding ribs partially scatter blown bottle accumulated materials and accelerate cooling, meanwhile, the attractiveness and placing stability of a bottle body are improved, and the structure is suitable for sterile cold filling packaging containers.

Description

Technical Field

[0001] This utility model relates to the field of bottle structure technology, and more specifically, to a bottom structure for an aseptic cold-fill bottle. Background Technology

[0002] The bottom structure of existing aseptic cold-fill bottles is prone to uneven material accumulation and low cooling efficiency during blow molding, resulting in insufficient bottom strength, easy deformation, and poor stability when placed. In traditional designs, the bottom structure is simple and lacks optimized design to effectively distribute stress and improve cooling, which affects production efficiency and product quality. Utility Model Content

[0003] The present invention provides a bottom structure for aseptic cold-fill bottles to improve material distribution, increase cooling speed, enhance bottom strength, and ensure bottle stability.

[0004] To alleviate the above problems, the technical solution adopted by this utility model is as follows:

[0005] A sterile cold-fill bottle bottom structure includes a concave curved surface at the center of the bottle bottom and a plurality of outwardly protruding claws evenly distributed around the concave curved surface; the root of the outwardly protruding claws is directly connected to the annular edge of the concave curved surface; the outwardly protruding claws gradually narrow from the root to the top along the radial direction of the bottle bottom and then gradually expand; the opposite sidewalls of two adjacent outwardly protruding claws are straight inclined surfaces that gradually expand from the bottom to the top; the surface of the concave curved surface is provided with a plurality of outwardly protruding ribs evenly distributed around its center.

[0006] Preferably, the number of the protruding claws and the protruding ribs are both eight.

[0007] Preferably, two adjacent protruding claws are separated by a planar region.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1) The convex ribs on the concave curved surface can evenly distribute the bottom material during blow molding, reduce local stress concentration, and increase the surface area to accelerate cooling and improve molding efficiency.

[0010] 2) The gradient structure and straight inclined surface design of the convex claw, combined with the direct connection between the root and the concave curved surface, significantly improves the pressure resistance of the bottle bottom and the overall structural strength, reducing the risk of deformation.

[0011] 3) The circumferentially distributed protruding claws form a stable support surface, ensuring that the bottle is placed stably; the geometric shape of the protruding ribs and claws takes into account both functionality and visual aesthetics.

[0012] 4) This structural design simplifies the molding process of blow molding molds, reduces material waste, and is suitable for efficient industrial production.

[0013] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the bottom structure of the aseptic cold-fill bottle described in the embodiment;

[0016] In the figure: 1-concave curved surface, 2-convex claw, 3-convex rib, 4-planar area, 5-opposite sidewall. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] Please refer to Figure 1 This embodiment provides a sterile cold-fill bottle bottom structure, including an inner concave curved surface 1 in the center of the bottle bottom and eight outwardly protruding claws 2 evenly distributed around the inner concave curved surface 1.

[0019] The root of the outwardly convex claw 2 is directly connected to the annular edge of the inwardly concave curved surface 1, forming a continuous transition structure. The outwardly convex claw 2 gradually narrows and then expands radially from the root to the top along the bottom of the bottle. The opposing sidewalls 5 of two adjacent outwardly convex claws 2 are straight inclined surfaces that gradually expand from the bottom to the top, and adjacent outwardly convex claws 2 are separated by a planar region 4. This planar transition structure eliminates sharp transitions between the claw sidewalls, forming a smooth separating zone. The geometric stability of the planar region 4 reduces disturbances in material flow during blow molding.

[0020] In addition, the concave curved surface 1 has eight outwardly protruding ribs 3 evenly distributed around its center circumference. The number of outwardly protruding claws 2 and outwardly protruding ribs 3 is limited to eight, and the mechanical balance and heat conduction uniformity are achieved by utilizing the symmetrical and uniform distribution characteristics.

[0021] In this embodiment, the concave curved surface 1, the convex claw 2, and the convex rib 3 work together to optimize material distribution and cooling efficiency during blow molding. The radially tapered design of the convex claw 2, which narrows first and then expands, along with the gradually widening straight slope between adjacent claws, enhances the bottom mechanical support. The convex rib 3 on the concave curved surface 1 disperses the pressure of the blow-molded material through geometric protrusions, while simultaneously increasing the surface area to accelerate heat dissipation.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bottom structure for aseptic cold-fill bottles, characterized in that, It includes a concave curved surface (1) at the center of the bottle bottom and a plurality of convex claws (2) evenly distributed around the concave curved surface (1) in the circumferential direction; the root of the convex claws (2) is directly connected to the annular edge of the concave curved surface (1); the convex claws (2) gradually narrow from the root to the top in the radial direction of the bottle bottom and then gradually expand; the opposite sidewalls (5) of two adjacent convex claws (2) are straight inclined surfaces that gradually expand from the bottom to the top; the surface of the concave curved surface (1) is provided with a plurality of convex ribs (3) evenly distributed around its center in the circumferential direction.

2. The aseptic cold-fill bottle bottom structure according to claim 1, characterized in that, The number of the protruding claws (2) and the protruding ribs (3) are both eight.

3. The aseptic cold-fill bottle bottom structure according to claim 1, characterized in that, The two adjacent protruding claws (2) are separated by a planar region (4).

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