Alpla Werke Alwin Lehner GmbH and Co has patented a method for transferring a negative structure from a blow molding tool’s inner wall to a plastic container. The process involves heating, molding, cooling, and demolding, with an emphasis on energy efficiency through insulation of temperature control channels. GlobalData’s report on Alpla Werke Alwin Lehner GmbH and Co 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 Alpla Werke Alwin Lehner GmbH and Co, Plastic recycling was a key innovation area identified from patents. Alpla Werke Alwin Lehner GmbH and Co's grant share as of June 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.
Method for molding plastic containers with negative surface structures
The patent US12030234B2 outlines a method for transferring a negative structure from the inner wall of a blow molding tool to the surface of a plastic container. The process involves several key steps: heating a designated region of the mold cavity, introducing a preform, closing the tool, and shaping the container by inflating the preform against the mold's inner wall. Cooling is achieved through temperature control channels that are insulated from the molding body to minimize the mass that requires heating and cooling, thereby reducing energy costs. The method allows for precise temperature management, with specific temperature ranges for both heating and cooling, particularly for containers made from polyolefins.
Additionally, the claims detail the structural characteristics of the mold and the resulting containers. The method ensures that the structured surface of the plastic container closely matches the negative structure of the mold, with deviations of less than 1 micrometer. The patent also specifies the use of thermally insulating materials and the design of temperature control channels to enhance efficiency. The resulting plastic containers are characterized by a structured surface, which can include features such as reflection gratings, further emphasizing the precision of the molding process. Overall, this patent presents a comprehensive approach to improving the efficiency and accuracy of blow molding techniques for plastic containers.
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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.
