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Causes of Mold Adhesion During Rubber Molding and Their Solutions
After vulcanization, molded rubber products often adhere to the mold and are difficult to demold, which is one of the most challenging issues in rubber processing and directly affects product quality, appearance, and production efficiency. This paper systematically analyzes the causes and mechanisms of mold sticking from multiple perspectives, including hydrogen‑bonding adsorption of surface hydroxyl groups on white fillers (precipitated silica), under‑vulcanization, excessive use of resins, adhesives, or metal salts in the compound, mold‑related factors, as well as the vulcanization system and process parameters. Drawing on both domestic and international literature and industry practice, the study proposes comprehensive solutions, such as formulation optimization, mold treatment, process adjustments, and the application of release agents.
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The intensity of new hire recruitment and training has been further increased.
As the company’s business continues to expand, order volumes are steadily increasing, and the demand for production‑line personnel is also rising. However, the previously employed recruitment and training approaches were overly simplistic and one‑size‑fits‑all, resulting in new hires taking far too long to become fully operational—and even when they do, they fail to contribute effectively in the short term.
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With the explosive growth of artificial intelligence technology, AI is profoundly transforming the way we work. To keep pace with the times and enhance the digital productivity of all employees, our company has recently undertaken proactive initiatives, organizing a series of training sessions and hands-on activities on AI‑powered software applications, with the aim of exploring the deep integration of AI into office workflows.
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OTS (Off Tooling Samples) refers to tooling‑derived samples. OTS parts must be produced using the official (hard) mold and on the production‑line tooling equipment. The purpose is to demonstrate that “my mold and production line are capable of manufacturing parts that meet the drawing specifications.” Key points: OTS parts are typically produced in small quantities—ranging from a few dozen to a few hundred—and are primarily used for DV/PV testing and dimensional verification. Obtaining OTS approval (OTS Release) signifies that your tooling has successfully passed its qualification stage.
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ISO 14001 environmental audit successfully passed; compliance is a company’s competitive moat.
Recently, our company successfully passed the specialized audit for the ISO 14001 Environmental Management System conducted by a recognized certification body. The audit results demonstrated full compliance across all processes, marking the company’s environmental management system as fully aligned with international standards and signifying a significant milestone in establishing a green, compliant, and standardized operational framework.
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Address: No. 39-6-1, No. 2, Gangxing Street, Economic and Technological Development Zone, Dalian City, Liaoning Province
Telephone:0411-88035937
Fax:0411-88035937
E-mail:yudongxin@dlbhxs.com
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