Mazda Motor has patented a method for manufacturing a laminated rubber hose with specific resin content and temperature control during lamination. The process involves using specific rubber materials, thermosetting resins, and vacuuming to ensure adhesion strength of at least 25 N/cm between layers. GlobalData’s report on Mazda Motor 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 Mazda Motor, Collision avoidance system was a key innovation area identified from patents. Mazda Motor's grant share as of January 2024 was 27%. Grant share is based on the ratio of number of grants to total number of patents.

Method for manufacturing laminated rubber hose without adhesive

Source: United States Patent and Trademark Office (USPTO). Credit: Mazda Motor Corp

A recently granted patent (Publication Number: US11885440B2) discloses a method for manufacturing a laminated rubber hose with specific layers and materials. The method involves laminating a second layer onto the outer surface of a first layer without using adhesive, with the first layer containing a rubber material with a specified amount of thermosetting resin. The first and second layers are formed from rubber materials containing thermosetting resins, including phenolic and melamine resins. Vacuuming is performed during the laminating process to expand the first layer, and sulfur is present in at least one of the rubber materials. The adhesive strength between the first and second layers is required to be at least 25 N/cm.

Furthermore, the method includes additional steps such as heating the first layer before laminating, preparing the rubber material for the second layer containing the thermosetting resin, and expanding the first layer radially outward during lamination. The laminated rubber hose may also include a reinforcing yarn layer between the first and second layers, with the layers adhering through the gaps of adjacent yarns. The patent specifies different ranges for the adhesive strength between the first and second layers, with values of 30 N/cm or more and 40 N/cm or more also being mentioned as desirable. Overall, the method outlined in the patent aims to produce a laminated rubber hose with specific material compositions and adhesive strengths to ensure durability and performance 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.