Nippon Light Metal patented a plastic container with enhanced slipping properties for contents. The container, made through blow molding, features an inner layer with filler particles creating a textured surface. The base resin is polyolefin, with specific thickness and filler particle size requirements. GlobalData’s report on Nippon Light Metal 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 Nippon Light Metal, UAV battery thermal mgmt was a key innovation area identified from patents. Nippon Light Metal's grant share as of January 2024 was 18%. Grant share is based on the ratio of number of grants to total number of patents.

Slippery plastic container with concave and convex inner surface

Source: United States Patent and Trademark Office (USPTO). Credit: Nippon Light Metal Holdings Co Ltd

A recently granted patent (Publication Number: US11851234B2) discloses a plastic container designed for storing various contents. The container features a blow-molded body with an innermost layer made of a resin composition containing a base resin and filler particles. The inner surface of this layer is uniquely textured with concave and convex shapes due to the presence of filler particles, enhancing the container's functionality. The base resin used is polyolefin, with specific thickness and particle diameter parameters, and the filler particles make up 20 to 40% of the composition, with a diameter ranging from 10 to 100 µm.

Furthermore, the patent includes claims related to the exposure of filler particles on the inner surface of the container, the use of acrylic resin for the filler particles, and the application of a liquid repellent agent on the textured surface. Additionally, a manufacturing method for the plastic container is detailed, involving blow molding a parison with the resin composition and expanding it to create the desired concave and convex shapes on the innermost layer. This innovative design and manufacturing process aim to improve the performance and usability of plastic containers for storing various types of contents.

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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.