Anheuser-Busch InBev patented an integrally blow-moulded bag-in-container with inner and outer layers made of the same material. The preform for blow-moulding includes a vent at the mouth to release the inner layer from the outer layer upon gas introduction at the interface. GlobalData’s report on Anheuser-Busch InBev 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 Anheuser-Busch InBev, Packaging cans with tearing tabs was a key innovation area identified from patents. Anheuser-Busch InBev's grant share as of February 2024 was 67%. Grant share is based on the ratio of number of grants to total number of patents.
Blow-moulded bag-in-container with same material inner and outer layers
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A recently granted patent (Publication Number: US11890784B2) discloses a preform designed for blow-molding a bag-in-container. The preform consists of an inner layer and an outer layer made of the same material, forming a two-layer container upon blow-molding. The inner layer of the container can be released from the outer layer by introducing a gas at specific interface points between the layers. The preform includes a mouth with a circumferentially-extending lip and vents oriented coaxially with the mouth to facilitate the separation of the layers.
The patent further details variations of the preform, including different materials for the inner and outer layers, the shape and distribution of vents, the use of release agents at the interface, and the option for an assembly of separate inner and outer preforms or an integral preform obtained through injection molding. The introduction of gas through the vents collapses the inner layer to dispense liquid contained within the container. The design allows for efficient dispensing of liquids while maintaining a two-layer structure, providing versatility in packaging solutions for various industries.
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