Wendel has filed a patent for a film designed for food containers. The film consists of a base support made from a PET-containing material and a coating that includes a saturated, high molecular, linear copolyester compound, a saturated, high molecular, linear, elasticised copolyester compound, and a polyolefinic copolymer. The patent claims that this film is suitable for use as a cover film for food containers. GlobalData’s report on Wendel gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData, Wendel's grant share as of September 2023 was 58%. Grant share is based on the ratio of number of grants to total number of patents.
A recently filed patent (Publication Number: US20230242724A1) describes a film that is specifically designed as a cover for food containers. The film consists of a base support made of a PET-containing material, with a coating applied to the base support. The coating is composed of three main components: a saturated, high molecular, linear copolyester compound A with an average molar mass of at least 10000 g/mol, a saturated, high molecular, linear, elasticized copolyester compound B with an average molar mass of at least 10000 g/mol, and a polyolefinic copolymer.
The patent also mentions that the polyolefinic copolymer in the film includes methacrylic ester olefin and polyester. Additionally, compound A has specific properties, including a hydroxyl value of at most 9, an acid value of at most 3, and a glass transition temperature of at least 65°C. Compound B, on the other hand, has an acid number of at most 3, a hydroxyl number of at most 5, and a glass transition temperature of at least 10°C.
The film's coating may also contain a resin as an additional component, with options including reactive resins, benzoguanamine resins, melamine resins, resol resins, or combinations thereof. The coating itself can be a lacquer layer and/or a lacquer film. Furthermore, the coating may include a catalyst and silicic acid.
The patent not only covers the film itself but also extends to its application in packaging for food or pharmaceutical products. The film can be used as a cover for receptacles that hold these products. Additionally, the patent describes a method for producing the film, which involves providing a base support made of a PET-containing material and applying the coating to at least one surface of the base support.
Overall, this patent introduces a specialized film for food container covers, highlighting its composition and properties. The film's unique combination of materials and coating components aims to provide enhanced performance and protection for food and pharmaceutical products.
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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.
