Description:
FIELD OF THE INVENTION
The present invention relates to the field of packaging, specifically to the design and application of closures for polyethylene terephthalate (PET) bottles. More particularly, the invention pertains to a neck and thread design of PET bottles that enables the application of snap-on caps using a vertical force, without the need for rotary torque, and facilitates the removal of the cap through a regular unscrewing mechanism. This design includes a tamper-evident feature that ensures the integrity of the closure system.

Application of the Invention
The invention is particularly applicable in the following areas:

1. Automated Packaging Lines:
o The invention is designed for use in automated packaging lines where snap-on caps can be applied to PET bottles using a vertical force. This eliminates the need for rotary torque during the capping process, thereby increasing the efficiency and speed of the packaging operation.
2. Beverage Industry:
o The PET bottle and cap assembly is ideal for the beverage industry, where maintaining the integrity of the seal is crucial to prevent leakage and contamination. The tamper-evident feature provides an additional layer of security, ensuring that the product remains safe until it reaches the consumer.
3. Consumer Convenience:
o The design allows for easy application and removal of the cap. Consumers can easily unscrew the cap for regular use, while the initial snap-on application ensures a secure fit. The tamper-evident ring provides a clear indication of whether the bottle has been previously opened.
4. Pharmaceutical and Personal Care Products:
o The leak-proof and tamper-evident features of the invention make it suitable for packaging pharmaceutical and personal care products, where product safety and integrity are of utmost importance.
5. Environmental Considerations:
o The invention supports the use of recyclable materials for both the PET bottle and the cap, contributing to environmental sustainability. The design is compatible with existing recycling processes, making it an eco-friendly packaging solution.
6. Customizable Design:
o The thread configuration and material selection can be customized to suit specific requirements, allowing for versatility in application across different industries and product types.

Overall, the invention provides a robust, efficient, and secure solution for the application and removal of caps on PET bottles, enhancing both the manufacturing process and the end-user experience.

BACKGROUND OF THE INVENTION
The packaging industry, particularly in the beverage and consumer goods sectors, relies heavily on the use of polyethylene terephthalate (PET) bottles due to their lightweight, durability, and recyclability. The closure systems for these bottles are critical in ensuring product integrity, preventing leakage, and providing tamper evidence. Traditional closure systems often involve screw-on caps that require the application of rotary torque during the capping process. While effective, these systems present several challenges, especially in high-speed automated packaging lines.

Prior Art Problems
1. Rotary Torque Requirement:
o Traditional screw-on caps require the application of rotary torque to secure the cap onto the bottle neck. This process can be time-consuming and may limit the speed of automated packaging lines.
2. Tamper Evidence:
o Many existing closure systems lack effective tamper-evident features, making it difficult to ensure that the product has not been compromised before reaching the consumer.
3. Seal Integrity:
o Maintaining a leak-proof seal is crucial, especially for liquid products. Some prior art designs may not provide a reliable seal, leading to potential leakage and product spoilage.
4. Material Distortion:
o The application of rotary torque can sometimes cause distortion in the cap material, affecting the seal integrity and overall functionality of the closure system.
Disadvantages of Prior Art
1. Reduced Efficiency:
o The need for rotary torque during the capping process can slow down automated packaging lines, reducing overall efficiency and throughput.
2. Complex Machinery:
o Packaging lines that apply rotary torque require more complex and expensive machinery, increasing the cost of production and maintenance.
3. Inconsistent Tamper Evidence:
o Inadequate tamper-evident features in some prior art designs fail to provide clear indications of tampering, compromising product safety.
4. Potential for Leakage:
o Inconsistent sealing mechanisms in some prior art designs can lead to leakage, affecting product quality and consumer satisfaction.

Technical Solution of the Present Invention
The present invention addresses the aforementioned problems by providing a PET bottle and cap assembly with the following features:

1. Multi-Start Thread Configuration:
o The bottle neck is designed with a multi-start thread configuration that allows the cap to be applied using a vertical force, eliminating the need for rotary torque during the capping process.
2. Snap-On Cap Fitment:
o The cap is designed to snap onto the bottle neck through the application of a vertical force, ensuring a secure fit without the need for rotary torque.
3. Tamper-Evident Breakaway Ring:
o The cap includes a tamper-evident breakaway ring that separates from the cap during the initial unscrewing, providing a clear indication of tampering.
4. Material Selection:
o The cap is made from a material that allows vertical movement without distortion, maintaining the seal integrity of the bottle and cap assembly.
5. Leak-Proof Seal:
o The design of the bottle neck and cap includes sealing surfaces that engage to provide a leak-proof seal, ensuring product integrity.

Technical Effect
The technical effect of the present invention includes:

1. Increased Efficiency:
o The elimination of rotary torque during the capping process allows for faster and more efficient operation of automated packaging lines.
2. Enhanced Tamper Evidence:
o The tamper-evident breakaway ring provides a clear and reliable indication of tampering, enhancing product safety.
3. Improved Seal Integrity:
o The leak-proof design ensures that the product remains sealed and protected from leakage and contamination.
4. Material Integrity:
o The use of materials that resist distortion during vertical application maintains the functionality and reliability of the closure system.

Need for the Present Invention
The present invention is needed to address the limitations and disadvantages of existing closure systems for PET bottles. By providing a solution that enhances efficiency, ensures tamper evidence, maintains seal integrity, and simplifies the capping process, the invention meets the demands of modern packaging lines and consumer expectations. The innovative design supports high-speed automated operations, reduces production costs, and improves overall product safety and quality.

OBJECT OF THE INVENTION
The primary object of the present invention is to provide an improved PET bottle and cap assembly that overcomes the limitations and disadvantages of prior art closure systems. Specifically, the invention aims to achieve the following objectives:

1. Efficient Capping Process:
o To enable the application of caps on PET bottles using a vertical force, eliminating the need for rotary torque during the capping process, thereby increasing the efficiency and speed of automated packaging lines.
2. Enhanced Tamper Evidence:
o To incorporate a tamper-evident breakaway ring in the cap design that provides a clear and reliable indication of tampering, ensuring product safety and consumer confidence.
3. Maintained Seal Integrity:
o To ensure a leak-proof seal between the cap and the bottle neck, preventing leakage and contamination, and maintaining the quality and integrity of the packaged product.
4. Material Durability:
o To use materials for the cap that allow vertical movement without distortion, ensuring that the cap maintains its functionality and the seal integrity is not compromised during the capping process.
5. Consumer Convenience:
o To design the cap for easy removal by unscrewing, allowing consumers to open and reseal the bottle with minimal effort, while retaining the tamper-evident feature for initial opening.
6. Compatibility with Existing Packaging Lines:
o To ensure that the bottle and cap assembly is compatible with existing PET bottle neck standards and can be integrated into current packaging lines without significant modifications.
7. Environmental Sustainability:
o To support the use of recyclable materials for both the PET bottle and the cap, contributing to environmental sustainability and reducing the ecological footprint of the packaging.

8. Versatility:
o To provide a customizable design that can be adapted to various product types and industry requirements, offering versatility in application across different sectors such as beverages, pharmaceuticals, and personal care products.
9. Cost-Effectiveness:
o To reduce production costs by simplifying the capping process and minimizing the need for complex machinery, while maintaining high standards of product safety and quality.

By achieving these objectives, the present invention aims to provide a robust, efficient, and secure solution for the application and removal of caps on PET bottles, enhancing both the manufacturing process and the end-user experience.

SUMMARY OF THE INVENTION
The following disclosure presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

The present invention provides an innovative PET bottle and cap assembly designed to enhance the efficiency of the capping process, ensure tamper evidence, maintain seal integrity, and improve consumer convenience. The invention addresses the limitations of traditional screw-on caps by introducing a snap-on mechanism that eliminates the need for rotary torque during the capping process. The cap includes a tamper-evident breakaway ring that provides a clear indication of tampering upon initial opening. The design ensures a leak-proof seal and uses materials that prevent distortion during vertical application, maintaining the functionality and reliability of the closure system.

Aspects and Implementations
1. Multi-Start Thread Configuration
• Aspect: The PET bottle neck features a multi-start thread configuration.
• Implementation: The multi-start threads allow the cap to engage with the bottle neck through a vertical force, facilitating a snap-on fitment without the need for rotary torque.
2. Snap-On Cap Fitment
• Aspect: The cap is designed to snap onto the bottle neck using a vertical force.
• Implementation: The cap threads are configured to engage with the multi-start threads on the bottle neck, allowing the cap to be applied quickly and securely by pressing it down vertically.
3. Tamper-Evident Breakaway Ring
• Aspect: The cap includes a tamper-evident breakaway ring.
• Implementation: The breakaway ring is connected to the cap by frangible bridges that break upon initial unscrewing, providing a clear visual indication of tampering.
4. Material Selection
• Aspect: The cap is made from a material that allows vertical movement without distortion.
• Implementation: Suitable materials such as polyethylene, polypropylene, or polycarbonate are used to ensure that the cap maintains its shape and functionality during the snap-on application.
5. Leak-Proof Seal
• Aspect: The bottle neck and cap are designed to provide a leak-proof seal.
• Implementation: The bottle neck includes a sealing surface that engages with a corresponding sealing surface on the cap, and may include a liner or gasket to enhance the seal integrity.
6. Consumer Convenience
• Aspect: The cap is designed for easy removal by unscrewing.
• Implementation: After the initial tamper-evident ring is broken, the cap can be unscrewed and resealed by the consumer, providing ease of use and maintaining the leak-proof seal.
7. Compatibility with Automated Packaging Lines
• Aspect: The cap is designed to be applied using automated capping equipment.
• Implementation: The snap-on mechanism allows for integration into existing automated packaging lines, increasing efficiency and reducing the need for complex machinery.
8. Environmental Sustainability
• Aspect: The bottle and cap are made from recyclable materials.
• Implementation: The use of recyclable plastics supports environmental sustainability and aligns with industry standards for eco-friendly packaging.
9. Customizable Design
• Aspect: The design can be customized to suit various product types and industry requirements.
• Implementation: The thread configuration, material selection, and tamper-evident features can be tailored to meet specific needs, offering versatility across different sectors such as beverages, pharmaceuticals, and personal care products.
10. Cost-Effectiveness
• Aspect: The invention aims to reduce production costs.
• Implementation: By simplifying the capping process and minimizing the need for rotary torque and complex machinery, the invention lowers production costs while maintaining high standards of product safety and quality.

Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The accompanying figures illustrate various aspects and embodiments of the integral spacer for the pole assembly of an air circuit breaker, as described in the present invention. These figures are provided to enhance the understanding of the invention and are not intended to limit its scope.

Figure 1: This figure illustrates the external view of the cap, highlighting its overall design and structure, including the tamper-evident breakaway ring.

Figure 2: This figure provides a cross-sectional view of the cap, showing the internal thread configuration and the tamper-evident breakaway ring connected by frangible bridges.

Figure 3: This figure presents a partial cutaway view of the cap, detailing the multi-start thread configuration and the engagement mechanism with the bottle neck.

Figure 4: This figure depicts an exploded view of the cap and bottle neck assembly, illustrating the alignment and interaction of the cap threads with the bottle neck threads.

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may not have been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRITION OF THE INVENTION
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding, but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments belong. Further, the meaning of terms or words used in the specification and the claims should not be limited to the literal or commonly employed sense but should be construed in accordance with the spirit of the disclosure to most properly describe the present disclosure.

The terminology used herein is for the purpose of describing particular various embodiments only and is not intended to be limiting of various embodiments. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising" used herein specify the presence of stated features, integers, steps, operations, members, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, components, and/or groups thereof.

The present disclosure will now be described more fully with reference to the accompanying drawings, in which various embodiments of the present disclosure are shown.

The present invention relates to a PET bottle and cap assembly designed to enhance the efficiency of the capping process, ensure tamper evidence, maintain seal integrity, and improve consumer convenience. The invention introduces a snap-on mechanism that eliminates the need for rotary torque during the capping process and includes a tamper-evident breakaway ring that provides a clear indication of tampering upon initial opening. The design ensures a leak-proof seal and uses materials that prevent distortion during vertical application, maintaining the functionality and reliability of the closure system.

Embodiments of the Invention
Embodiment 1: Multi-Start Thread Configuration
Construction:
• The PET bottle neck features a multi-start thread configuration with at least two threads starting at different points around the circumference of the neck.
• The threads are designed with a specific pitch and depth to facilitate the snap-on fitment of the cap.
Function:
• The multi-start threads allow the cap to engage with the bottle neck through a vertical force, enabling a secure snap-on fitment without the need for rotary torque.

Embodiment 2: Snap-On Cap Fitment
Construction:
• The cap is designed with threads that correspond to the multi-start threads on the bottle neck.
• The cap includes a tamper-evident breakaway ring connected by frangible bridges.
Function:
• The cap is applied to the bottle neck using a vertical force, causing the cap to snap onto the bottle neck securely. The vertical force required to snap the cap (5) onto the bottle neck (1) is generally within the range of 10 to 200 Newtons.
• The frangible bridges of the breakaway ring break upon initial unscrewing, providing a clear indication of tampering.

Embodiment 3: Material Selection
Construction:
• The cap is made from a plastic material such as polyethylene, polypropylene, or polycarbonate.
• The material is selected to allow vertical movement without distortion, ensuring the cap maintains its shape and functionality.
Function:
• The material properties ensure that the cap can be applied using a vertical force without causing distortion, maintaining the seal integrity of the bottle and cap assembly.

Embodiment 4: Leak-Proof Seal
Construction:
• The bottle neck includes a sealing surface that engages with a corresponding sealing surface on the cap.
• The cap may include a liner or gasket to enhance the seal integrity.
Function:
• The sealing surfaces of the bottle neck and cap engage to provide a leak-proof seal, preventing leakage and maintaining product integrity.

Embodiment 5: Consumer Convenience
Construction:
• The cap is designed for easy removal by unscrewing after the initial tamper-evident ring is broken.
• The cap includes a gripping surface to facilitate manual unscrewing.
Function:
• Consumers can easily unscrew the cap for regular use, while the tamper-evident ring provides a clear indication of whether the bottle has been previously opened.

Embodiment 6: Compatibility with Automated Packaging Lines
Construction:
• The cap is designed to be applied using automated capping equipment.
• The snap-on mechanism allows for integration into existing packaging lines.
Function:
• The vertical force application of the cap increases the efficiency of automated packaging lines, reducing the need for complex machinery and rotary torque.

Embodiment 7: Environmental Sustainability
Construction:
• The bottle and cap are made from recyclable materials.
• The design supports the use of eco-friendly plastics.
Function:
• The use of recyclable materials contributes to environmental sustainability and aligns with industry standards for eco-friendly packaging.

Embodiment 8: Customizable Design
Construction:
• The thread configuration, material selection, and tamper-evident features can be tailored to meet specific industry requirements.
• The design can be adapted for various product types, including beverages, pharmaceuticals, and personal care products.
Function:
• The customizable design offers versatility in application, allowing the invention to be used across different sectors and product types.

Best Mode of Working the Invention
The best mode of working the invention involves the following steps:
1. Design and Material Selection:
o Select appropriate materials for the cap and bottle neck, such as polyethylene, polypropylene, or polycarbonate, to ensure durability and functionality.
o Design the multi-start thread configuration on the bottle neck and corresponding threads on the cap to facilitate snap-on fitment.
2. Manufacturing:
o Manufacture the PET bottles with the specified multi-start thread configuration.
o Produce the caps with the designed threads, tamper-evident breakaway ring, and any additional sealing features such as liners or gaskets.
3. Application:
o Use automated capping equipment to apply the caps to the PET bottles using a vertical force, ensuring a secure snap-on fitment.
o Ensure that the tamper-evident breakaway ring is intact during the initial capping process.
4. Quality Control:
o Conduct quality control checks to verify the integrity of the seal and the functionality of the tamper-evident feature.
o Ensure that the caps can be easily unscrewed by consumers after the initial tamper-evident ring is broken.
5. Packaging and Distribution:
o Package the sealed PET bottles for distribution, ensuring that the tamper-evident feature provides a clear indication of product integrity.
o Distribute the packaged products to retailers and consumers, maintaining the quality and safety of the contents.

By following these steps, the invention provides a robust, efficient, and secure solution for the application and removal of caps on PET bottles, enhancing both the manufacturing process and the end-user experience.

DETAILED DESCRIPTION OF THE FIGURES
FIG. 1: Perspective View of the Cap Assembly
FIG. 1 illustrates a perspective view of the cap assembly, showcasing the overall design and structure. The cap (5) is depicted with its external features, including the gripping surface designed to facilitate manual unscrewing by the user. The cap includes a series of vertical ridges that enhance grip and provide an anti-slip surface (18). The tamper-evident breakaway ring (4) is visible at the base of the cap, indicating its position before initial opening.

FIG. 2: Cross-Sectional View of the Cap Assembly
FIG. 2 provides a cross-sectional view of the cap assembly, revealing the internal components and their arrangement. The cap thread (6) is shown engaging with the multi-start thread configuration on the bottle neck (2). The internal plug seal (15) is visible, designed to engage with the bottle neck to provide an additional layer of leak-proof sealing. The frangible bridges connecting the tamper-evident breakaway ring (4) to the cap are also depicted, highlighting their role in providing a visual indication of tampering.

FIG. 3: Partial Cutaway View of the Cap Assembly
FIG. 3 presents a partial cutaway view of the cap assembly, focusing on the interaction between the cap and the bottle neck. The neck snap ring (3) is shown in detail, demonstrating its function in securing the cap onto the bottle neck. The neck internal diameter (4) is also visible, illustrating the precise fit required to maintain seal integrity. The folding flap (8) is depicted, which may provide an internal grip of the cap to the bottle neck so as to enable the bridges to break while unscrewing and hold the tamper evident ring on to the bottle while the top operation of the cap snaps off for screwing and unscrewing action.

FIG. 4: Exploded View of the Cap and Bottle Neck Assembly
FIG. 4 offers an exploded view of the cap and bottle neck assembly, detailing the individual components and their spatial relationships. The cap (5) is separated from the bottle neck (1), allowing for a clear view of the neck thread (2) and cap thread (6) configurations. The slit band (10) is shown, which may provide an audible click when the cap is initially unscrewed, serving as an additional tamper-evident feature. The cap bridge (9) is also depicted, illustrating its role in maintaining the structural integrity of the cap during the snap-on application.

ADVANTAGES OF THE INVENTION
The present invention offers several significant advantages over traditional closure systems for PET bottles. These advantages enhance the efficiency of the capping process, ensure product safety, and improve consumer convenience. The key advantages of the invention are as follows:

1. Increased Efficiency in Automated Packaging Lines:
o The snap-on mechanism eliminates the need for rotary torque during the capping process, allowing for faster and more efficient operation of automated packaging lines. This results in higher throughput and reduced production time.
2. Enhanced Tamper Evidence:
o The inclusion of a tamper-evident breakaway ring provides a clear and reliable indication of tampering. Consumers can easily identify if the product has been previously opened, ensuring product safety and integrity.
3. Maintained Seal Integrity:
o The design of the bottle neck and cap, including the sealing surfaces and optional liner or gasket, ensures a leak-proof seal. This prevents leakage and contamination, maintaining the quality and integrity of the packaged product.
4. Material Durability:
o The use of materials such as polyethylene, polypropylene, or polycarbonate for the cap allows vertical movement without distortion. This ensures that the cap maintains its shape and functionality during the snap-on application, preserving the seal integrity.
5. Consumer Convenience:
o The cap is designed for easy removal by unscrewing after the initial tamper-evident ring is broken. This provides consumers with a convenient and user-friendly experience, allowing for easy opening and resealing of the bottle.
6. Compatibility with Existing Packaging Lines:
o The snap-on mechanism and multi-start thread configuration are compatible with existing PET bottle neck standards. This allows for seamless integration into current packaging lines without significant modifications, reducing implementation costs.
7. Environmental Sustainability:
o The use of recyclable materials for both the PET bottle and the cap supports environmental sustainability. The design aligns with industry standards for eco-friendly packaging, contributing to reduced environmental impact.
8. Versatility in Application:
o The customizable design of the thread configuration, material selection, and tamper-evident features allows the invention to be adapted for various product types and industry requirements. This versatility makes the invention suitable for a wide range of sectors, including beverages, pharmaceuticals, and personal care products.
9. Cost-Effectiveness:
o By simplifying the capping process and minimizing the need for complex machinery, the invention reduces production costs. The efficient snap-on mechanism and reduced reliance on rotary torque lower operational expenses while maintaining high standards of product safety and quality.
10. Improved Product Safety:
o The tamper-evident feature and leak-proof seal enhance product safety, ensuring that the contents remain uncontaminated and secure until they reach the consumer. This is particularly important for sensitive products such as pharmaceuticals and beverages.
11. Robust and Reliable Design:
o The multi-start thread configuration and material selection provide a robust and reliable closure system. The design ensures consistent performance and durability, even under varying conditions and repeated use.

By offering these advantages, the present invention provides a comprehensive solution for the application and removal of caps on PET bottles, addressing the challenges of traditional closure systems and meeting the demands of modern packaging lines and consumer expectations.

List of components/features:

1- Neck
2- Neck Thread
3- Neck Snap Ring
4- Neck Internal Diameter
5- Cap
6- Cap Thread
7- Cap Plug
8- Folding Flap
9- Cap Bridge
10- Slit Band

The descriptions and illustrations provided in this document are intended to explain the principles of the invention and its best mode of working. They are not intended to limit the scope of the invention, which is defined by the claims. Variations and modifications to the described embodiments may be made without departing from the scope of the invention. The specific embodiments described in this document are examples of the invention and are not intended to limit the scope of the claims. The claims should be interpreted broadly to cover all equivalent structures and methods that fall within the scope of the invention. The technical specifications and details provided in this document are for illustrative purposes only. Actual implementations of the invention may vary based on specific design requirements, manufacturing processes, and application needs.

Any references to prior art documents, patents, or publications are provided for informational purposes only. The inclusion of such references does not imply that the present invention is limited by or dependent on the prior art.
, Claims:
1. A PET bottle and cap assembly comprising:
a. a PET bottle having a neck (1) with a multi-start thread configuration (2);
b. a cap (5) having threads (6) designed to engage with the multi-start thread configuration (2) of the bottle neck (1);
c. wherein the cap (5) is configured to be applied to the bottle neck (1) by a vertical force, causing the cap (5) to snap onto the bottle neck (1) without the application of rotary torque;
d. wherein the cap (5) includes a tamper-evident breakaway ring (4) that separates from the cap (5) during the initial unscrewing of the cap (5);
e. wherein the cap (5) is further configured to be removed from the bottle neck (1) by unscrewing, after the tamper-evident breakaway ring (4) has been separated;
f. wherein the material of the cap (5) is selected to allow vertical movement without distortion, maintaining the seal integrity of the bottle and cap assembly;
g. wherein the design of the bottle neck (1) and cap (5) allows for subsequent application and removal of the cap (5) through rotary torque, providing a leak-proof system during regular use;
h. wherein the bottle neck (1) includes a sealing surface that engages with a corresponding sealing surface on the cap (5) to provide a leak-proof seal.

2. The PET bottle and cap assembly of claim 1, wherein the multi-start thread configuration (2) on the bottle neck (1) comprises at least two threads starting at different points around the circumference of the neck (1).

3. The PET bottle and cap assembly of claim 1, wherein the cap threads (6) are designed with a specific pitch and depth to facilitate the snap-on fitment.

4. The PET bottle and cap assembly of claim 1, wherein the tamper-evident breakaway ring (4) is connected to the cap (5) by a series of frangible bridges.

5. The PET bottle and cap assembly of claim 1, wherein the vertical force required to snap the cap (5) onto the bottle neck (1) is within the range of 10 to 200 Newtons.

6. The PET bottle and cap assembly of claim 1, wherein the cap (5) is made from a plastic material selected from the group consisting of polyethylene, polypropylene, and polycarbonate.

7. The PET bottle and cap assembly of claim 1, wherein the bottle neck (1) includes a sealing surface that engages with a corresponding sealing surface on the cap (5) to provide a leak-proof seal.

8. The PET bottle and cap assembly of claim 1, wherein the cap (5) includes a liner or gasket to enhance the seal integrity between the cap (5) and the bottle neck (1).

9. The PET bottle and cap assembly of claim 1, wherein the cap (5) is configured to be applied to the bottle neck (1) using automated capping equipment.

10. The PET bottle and cap assembly of claim 1, wherein the tamper-evident breakaway ring (4) provides a visual indication of tampering when separated from the cap (5).

11. The PET bottle and cap assembly of claim 1, wherein the cap (5) includes a gripping surface to facilitate manual unscrewing by the user.

12. The PET bottle and cap assembly of claim 1, wherein the bottle neck (1) is designed to withstand the vertical force applied during the snap-on capping process without deformation.

13. The PET bottle and cap assembly of claim 1, further comprising a folding flap (8) including an internal grip of the cap to the bottle neck so as to enable the bridges to break while unscrewing and hold the tamper evident ring on to the bottle while the top operation of the cap snaps off for screwing and unscrewing action.

14. The PET bottle and cap assembly of claim 1, wherein the cap (5) is designed to be reusable after the initial tamper-evident ring (4) has been broken away.

15. The PET bottle and cap assembly of claim 1, wherein the cap (5) includes an internal plug seal (7) that engages with the bottle neck (1) to provide an additional layer of leak-proof sealing.

16. The PET bottle and cap assembly of claim 1, wherein the multi-start thread configuration (2) on the bottle neck (1) is designed to reduce the application force required for the snap-on fitment.

17. The PET bottle and cap assembly of claim 1, wherein the cap (5) is designed with a venting feature to allow for pressure equalization within the bottle.

18. The PET bottle and cap assembly of claim 1, wherein the cap (5) includes an anti-slip surface to improve grip during manual unscrewing.

19. The PET bottle and cap assembly of claim 1, wherein the cap (5) is designed to be compatible with existing PET bottle neck standards to facilitate integration into current packaging lines.

20. The PET bottle and cap assembly of claim 1, wherein the cap (5) includes a tamper-evident feature that provides an audible click when the cap (5) is initially unscrewed.