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Through a thorough analysis of concepts used in the current market, W&H engineers have developed new dies that can both reduce the melt volume and shorten the melt residence time. Therefore, the focus is on two well-known standards that have a decisive influence on the quality of the final film, bearing in mind that materials like EVOH tend to scorch when exposed to the heated metal surface of the die for too long, leading to gels on the film. And unavoidable consequences are expensive scrap.
By optimizing the configuration of the three functional areas of the die, the new MAXICONE(r) die achieves minimum melt volume and residence time.
The pre-distributor was chosen for this purpose. When it comes to a 7- or 9-layer large die, it has particular advantages, while at the same time all die systems known on the market are characterized by a minimal melt volume. . The tapered W&H spiral mandrel distributor ensures uniform melt distribution. Thanks to the conical stacking spiral mandrel distributor, the shortest melt flow path is achieved. They guarantee the initial packaging of all inner layers, and not just the often fragile middle layers. With the new MAXICONE® layer die, W&H opens up new possibilities in barrier film production. Even the most vulnerable components will not have any problems.
The MAXICONE layer die is W&H's response to the increasingly complex world trend of barrier films. Market demand for the characteristics and performance characteristics of multilayer barrier films is continuously becoming more stringent. Thin film processors find it difficult to provide a perfect packaging film for a customer's specific product. With the MAXICONETM layer die, W&H has opened up new prospects for barrier film production because the greater the number of layers, the more flexibility for processors to configure and produce new barrier films that are perfectly suited to the needs of the packaged product. The bigger.