Amcor has been granted a patent for a method of manufacturing a container through injection molding and blow molding. The process involves creating a preform with distinct layers, including a base layer and an oxygen barrier layer, optimizing the container’s sealing and oxygen resistance properties. GlobalData’s report on Amcor gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Amcor, Synthetic Resin containers was a key innovation area identified from patents. Amcor's grant share as of June 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Container manufacturing method with oxygen barrier layers
The granted patent US12030690B2 outlines a method for manufacturing a container through a multi-step process involving injection molding and blow molding. The method begins with the formation of a preform that consists of a bottom portion, a body portion, and a finish portion, which includes a top sealing surface, threads, and a support flange. The preform is designed such that the top sealing surface is composed solely of a base layer, while both the body and bottom portions incorporate an oxygen barrier layer encapsulated within the base layer. This oxygen barrier layer, which is made from a polyethylene copolymer, plays a crucial role in enhancing the container's ability to preserve contents by limiting oxygen permeability. The claims specify that the oxygen barrier layer is strategically tapered and confined to specific areas of the preform, ensuring optimal functionality while maintaining the integrity of the base layer.
Further claims detail the composition and structural characteristics of the preform and the container. The oxygen barrier layer is defined to constitute a specific percentage of the preform's total weight, varying based on the intended use of the container, such as food storage or beverages like wine and beer. The patent also emphasizes that the finish portion, including the top sealing surface, remains free of the oxygen barrier layer, thereby ensuring that the sealing capabilities are not compromised. Additionally, the thickness of the oxygen barrier layer is specified to be less than that of the inner and outer portions of the preform, which contributes to the overall design efficiency. This innovative method aims to enhance the performance of containers while addressing the need for effective oxygen barriers in various applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
