High-pressure-resistant plastic bottle blank container

Abstract

The utility model discloses a high pressure resistant plastic bottle blank container, relates to plastic bottle blank technical field, including bottle blank main part and be provided pressure resistant subassembly and reinforcing subassembly in the bottle blank main part, the pressure resistant subassembly includes the outer layer, the utility model adopts multilayer composite material to make the bottle body, has improved the pressure resistant performance of plastic bottle blank container, has improved the plastic bottle blank container's pressure resistant performance, has improved the plastic bottle blank container's pressure resistant performance. The inner layer is made of a flexible plastic material and has good flexibility and sealing performance; the middle layer is made of a high-strength plastic material and bears main pressure; the outer layer is made of a hard plastic material, the middle layer and the inner layer are protected from being influenced by the external environment, and the plastic materials of the inner layer, the middle layer and the outer layer are injected into a mold respectively to form a multi-layer structure, the method belongs to the prior art, more details are not made, and through reasonable material combination and structural design, comprehensive improvement of strength, durability and barrier property is achieved; the device is suitable for various occasions needing to bear high pressure, such as high-pressure cleaning and high-pressure sterilization.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bottle blanks, in particular to a high-pressure resistant plastic bottle blank container. Background Art

[0002] Plastic bottles are used to hold drinking water and beverages. They are easy to carry and have a long shelf life. Bottle blanks are semi-finished products for making bottles. When making plastic bottles, firstly, the bottle blanks are formed by injection molding, and then the bottle blanks are heated and blown to make the bottle blanks into bottles. After the bottles are cooled and shaped, plastic bottles can be formed.

[0003] However, existing plastic bottle blank containers, such as mineral water bottles, beverage bottles, etc., are generally made of plastic materials such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), etc. These materials perform well under normal pressure or low pressure environments, but under high pressure environments, such as high pressure cleaning and high pressure sterilization, the pressure resistance of plastic bottle blank containers is often insufficient, and they are prone to deformation, rupture and other problems, affecting the use effect of the container. The shoulder part of the bottle is an important supporting structure of the bottle. Usually, due to the lack of shrinkage grooves and thickening layers, its pressure resistance may be relatively weak. Under high pressure environments, the shoulder part of the bottle is prone to deformation or rupture, resulting in a decrease in the stability of the overall structure of the bottle.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a high-pressure resistant plastic bottle blank container is proposed. Utility Model Content

[0005] The utility model aims to provide a high-pressure resistant plastic bottle blank container to solve the problem of damage caused by high-pressure operation proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure resistant plastic preform container, comprising a preform body and a pressure-resistant component and a reinforcing component arranged inside the preform body, the pressure-resistant component comprising an outer layer, a middle layer and an inner layer, the preform body is composed of a three-layer design, the outer layer is arranged outside the preform body, the middle layer is arranged inside the outer layer, and the inner layer is arranged inside the middle layer;

[0007] The reinforcement component includes a bottle mouth, a bottle shoulder, a shrinkage groove, a thickening layer, a second reinforcing rib and a circular arc. The bottle mouth is installed on the upper end of the bottle blank body, and a bottle shoulder is arranged below the bottle mouth. The outer surface of the bottle shoulder is provided with a shrinkage groove, and the inside of the bottle shoulder is provided with a thickening layer. The inner wall of the bottle blank body is provided with a second reinforcing rib, and a circular arc is provided at the connection of the second reinforcing rib.

[0008] Furthermore, the outer layer is made of hard plastic materials such as polyethylene terephthalate PET or polycarbonate PC.

[0009] Furthermore, the middle layer is made of high-strength plastic materials such as polyamide PA or polyimide PI.

[0010] Furthermore, the outer surface of the bottle mouth is provided with threads, and the inner wall of the bottle mouth is provided with a sealing ring.

[0011] Furthermore, the outer wall of the preform body is provided with a first reinforcing rib.

[0012] Furthermore, a bottle bottom is arranged at the bottom of the bottle blank body, a groove is arranged inside the bottle bottom, and a sintering port is arranged inside the groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model improves the pressure resistance of the plastic bottle blank container by using a multi-layer composite material to make the bottle body. The inner layer adopts a flexible plastic material with good flexibility and sealing performance; the middle layer adopts a high-strength plastic material to withstand the main pressure; the outer layer adopts a hard plastic material to protect the middle layer and the inner layer from the influence of the external environment, and the plastic materials of the inner layer, the middle layer and the outer layer are respectively injected into the mold to form a multi-layer structure, which belongs to the prior art and will not be described in detail. Through reasonable material combination and structural design, the comprehensive improvement of strength, durability and barrier properties is achieved, and it is suitable for various occasions that need to withstand high pressure, such as high-pressure cleaning, high-pressure sterilization, etc.

[0015] 2. The utility model provides shrinkage grooves on the shoulder and the outer surface of the bottle and performs thickening treatment on the thickening layer to reduce the expansion that may occur under high pressure, so as to improve its pressure resistance. The shrinkage of the plastic material can be guided during the bottle molding process, so that the bottle is more uniform and stable after cooling, thereby reducing the deformation and distortion of the bottle, and usually withstands greater pressure and stress. Therefore, by increasing the thickness of the material, the pressure resistance of the bottle can be improved, so that it can better withstand the pressure changes in a high-pressure environment, which can improve the overall quality and durability of the bottle, reduce the damage rate of the product during transportation and use, and better withstand the pressure changes in a high-pressure environment, reducing the possibility of expansion and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the bottle mouth;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the main body of the bottle blank;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure inside the bottle blank body.

[0020] In the figure: 1. bottle body; 101. outer layer; 102. middle layer; 103. inner layer; 2. bottle mouth; 201. thread; 202. sealing ring; 3. bottle shoulder; 301. shrinkage groove; 302. thickening layer; 4. first reinforcing rib; 5. bottle bottom; 501. groove; 502. sintering mouth; 6. second reinforcing rib; 601. arc. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] like Figure 1 - Figure 4As shown, a high-pressure resistant plastic preform container comprises a preform body 1 and a pressure-resistant component and a reinforcement component arranged inside the preform body 1, the pressure-resistant component comprises an outer layer 101, a middle layer 102 and an inner layer 103, the preform body 1 is composed of a three-layer design, the outer layer 101 is arranged outside the preform body 1, the middle layer 102 is arranged inside the outer layer 101, the inner layer is arranged inside the middle layer 102, the reinforcement component comprises a bottle mouth 2, a bottle shoulder 3, a shrinkage groove 301, a thickening layer 302, a second reinforcing rib 6 and an arc 601, the upper end of the preform body 1 is provided with a bottle mouth 2, the lower end of the bottle mouth 2 is provided with a bottle shoulder 3, the outer surface of the bottle shoulder 3 is provided with a shrinkage groove 301, the inner surface of the bottle shoulder 3 is provided with a thickening layer 302, the preform body The inner wall is provided with a second reinforcing rib 6, and a circular arc 601 is provided at the connection of the second reinforcing rib 6. The outer layer 101 is made of hard plastic materials such as polyethylene terephthalate PET or polycarbonate PC, the middle layer 102 is made of high-strength plastic materials such as polyamide PA or polyimide PI, and the inner layer 103 is made of flexible plastic materials such as polyethylene PE or polypropylene PP. The bottle body is made of a multi-layer composite material to improve the pressure resistance of the plastic bottle blank container. The inner layer 103 is made of flexible plastic material with good flexibility and sealing performance. The middle layer 102 is made of high-strength plastic material to withstand the main pressure. The outer layer 101 is made of hard plastic material to protect the middle layer 102 and the inner layer 103 from the influence of the external environment, and the The plastic materials of the inner layer 103, the middle layer 102 and the outer layer 101 are respectively injected into the mold to form a multi-layer structure, which belongs to the prior art and will not be described in detail. Through reasonable material combination and structural design, the strength, durability and barrier properties are comprehensively improved, and it is suitable for various occasions that need to withstand high pressure, such as high-pressure cleaning, high-pressure sterilization, etc. Then, the bottle shoulder 3 and the outer surface are provided with a shrinkage groove 301 and the thickening layer 302 is thickened to reduce the expansion that may occur under high pressure, so as to improve its pressure resistance, and can guide the shrinkage of the plastic material during the bottle molding process, so that the bottle is more uniform and stable after cooling, thereby reducing the deformation and distortion of the bottle, and usually withstands greater pressure and stress, so by increasing Increasing the material thickness can improve the bottle's pressure resistance, enable it to better withstand pressure changes in a high-pressure environment, improve the overall quality and durability of the bottle, reduce the damage rate of the product during transportation and use, and better withstand pressure changes in a high-pressure environment, reduce the possibility of expansion and deformation, and then the inner wall of the bottle blank body 1 is provided with a second reinforcing rib 6, and the connection between the second reinforcing rib 6 is provided with an arc 601, which can smoothly transition the connection between the reinforcing ribs and reduce stress concentration. This helps to reduce the risk of damage to the bottle due to stress concentration during use, and helps the flow and distribution of plastic in the mold, so that the bottle blank body 1 is more uniform and stable during the molding process, which can reduce molding defects.

[0024] Furthermore, a thread 201 is provided on the outer surface of the bottle mouth 2, and a sealing ring 202 is provided on the inner wall of the bottle mouth 2. The thread 201 is provided on the bottle mouth 2 so that the bottle cap can be easily tightened or unscrewed, thereby improving the usability of the bottle. Then, a sealing ring 202 is provided on the inner wall of the bottle mouth 2, and a silicone material is used to ensure the sealing during blow molding.

[0025] Embodiment 2

[0026] like Figure 1 and Figure 4 As shown, a high-pressure resistant plastic bottle blank container proposed by the utility model, compared with Example 1, as another embodiment of the utility model, the outer wall of the bottle blank body 1 is provided with a first reinforcing rib 4, the bottom of the bottle blank body 1 is provided with a bottle bottom 5, the inside of the bottle bottom 5 is provided with a groove 501, and the inside of the groove 501 is provided with a sintering port 502. The first reinforcing ribs 4 are evenly arranged on the outer surface of the bottle blank body 1, which can effectively improve the structural strength of the bottle blank body 1. When the bottle is subjected to external pressure or impact force, the reinforcing ribs can disperse and resist these forces, thereby reducing the risk of deformation and rupture of the bottle, and helping to prevent the bottle from being twisted, dented or other defects during the manufacturing process. By adding the grooves 501, the position of the sintering port 502 of the bottle blank is limited, so that a group of grooves 501 appear at the bottom of the whole during the blow molding process, preventing the sintering port 502 of the bottle blank from forming convex points after blow molding, which makes the whole body unable to stand stably.

[0027] It should be noted that the reinforcement is achieved by increasing the material thickness or changing the material layout at specific parts of the plastic product.

[0028] Working principle: The bottle body is made of multi-layer composite materials to improve the pressure resistance of the plastic bottle blank container. The inner layer 103 is made of flexible plastic material with good flexibility and sealing. The middle layer 102 is made of high-strength plastic material to withstand the main pressure. The outer layer 101 is made of hard plastic material to protect the middle layer 102 and the inner layer 103 from being affected by the external environment. The plastic materials of the inner layer 103, the middle layer 102 and the outer layer 101 are respectively injected into the mold to form a multi-layer structure, which belongs to the prior art and will not be described in detail. Through reasonable material combination and structural design, the strength, durability and barrier properties are comprehensively improved, and it is suitable for various occasions that need to withstand high pressure, such as high-pressure cleaning, high-pressure sterilization, etc. Then, the bottle shoulder 3 and the outer surface are provided with shrinkage grooves 301 and the thickening layer 302 is thickened to reduce the expansion that may occur under high pressure to improve its pressure resistance, which can be used in the bottle forming process. During the molding process, the shrinkage of the plastic material is guided, so that the bottle is more uniform and stable after cooling, thereby reducing the deformation and distortion of the bottle, and usually withstands greater pressure and stress. Therefore, by increasing the material thickness, the pressure resistance of the bottle can be improved, so that it can better withstand pressure changes in a high-pressure environment, which can improve the overall quality and durability of the bottle, reduce the damage rate of the product during transportation and use, and better withstand pressure changes in a high-pressure environment, reduce the possibility of expansion and deformation, and then the inner wall of the bottle blank body 1 is provided with a second reinforcing rib 6, and the second reinforcing rib 6 is connected at the connection. The arc 601 can smoothly transition the connection between the reinforcing ribs and reduce stress concentration. This helps to reduce the risk of damage to the bottle due to stress concentration during use, and helps the flow and distribution of plastic in the mold, so that the bottle blank body 1 is more uniform and stable during the molding process, which can reduce molding defects.

[0029] This is how this high pressure resistant plastic preform container works.

[0030] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A high-pressure resistant plastic preform container, comprising a preform body (1) and a pressure-resistant component and a reinforcing component arranged inside the preform body (1), characterized in that: The pressure-resistant component comprises an outer layer (101), a middle layer (102) and an inner layer (103); the bottle blank body (1) is composed of three layers, the outer layer (101) is arranged outside the bottle blank body (1), the middle layer (102) is arranged inside the outer layer (101), and the inner layer (103) is arranged inside the middle layer (102); The reinforcing component comprises a bottle mouth (2), a bottle shoulder (3), a shrinkage groove (301), a thickening layer (302), a second reinforcing rib (6) and a circular arc (601); the bottle mouth (2) is installed at the upper end of the bottle blank body (1); the bottle shoulder (3) is arranged below the bottle mouth (2); the outer surface of the bottle shoulder (3) is provided with a shrinkage groove (301); the inside of the bottle shoulder (3) is provided with a thickening layer (302); the inner wall of the bottle blank body (1) is provided with a second reinforcing rib (6); and the connection of the second reinforcing rib (6) is provided with a circular arc (601).

2. A high pressure resistant plastic preform container according to claim 1, characterized in that: The outer layer (101) is made of polyethylene terephthalate (PET) or polycarbonate (PC) hard plastic material.

3. A high pressure resistant plastic preform container according to claim 2, characterized in that: The middle layer (102) is made of high-strength plastic material such as polyamide PA or polyimide PI.

4. A high pressure resistant plastic preform container according to claim 1, characterized in that: The inner layer (103) is made of polyethylene PE or polypropylene PP flexible plastic material.

5. The high pressure resistant plastic preform container according to claim 1, characterized in that: The outer surface of the bottle mouth (2) is provided with a thread (201), and the inner wall of the bottle mouth (2) is provided with a sealing ring (202).

6. A high pressure resistant plastic preform container according to claim 1, characterized in that: The outer wall of the preform body (1) is provided with a first reinforcing rib (4).

7. A high pressure resistant plastic preform container according to claim 1, characterized in that: The bottom of the preform body (1) is provided with a bottle bottom (5), the interior of the bottle bottom (5) is provided with a groove (501), and the interior of the groove (501) is provided with a sintering port (502).

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