01-02-2018 дата публикации
Номер: US20180029278A1
Принадлежит:
An extrusion die with adjustable land channel can be formed of a die body that includes a first die body portion and a second die body portion, a first lip body, a second lip body, and a land channel body. The extrusion die can have a flow channel that includes a land channel terminating in an outlet orifice. The flow channel may be bound on one side by the first die body portion, the land channel body, and the first lip body. The flow channel may be bound on an opposite side by the second die body portion and the second lip body. In some examples, the length of the land channel is adjustable by configuring the land channel body and/or first lip body to move across the width of the flow channel. 1. A method of adjusting a length of a land channel using an extrusion die having a flow channel terminating in an outlet orifice , the flow channel being bound on one side by at least a first die body , a land channel body , and a first die lip and being bound on an opposite side by at least a second die body and a second die lip , the method comprising:advancing said first die lip toward said second die lip and thereby adjusting a width of the outlet orifice; andadvancing said land channel body toward at least one of said second die body and said second die lip and thereby adjusting the length of the land channel.2. The method of claim 1 , wherein advancing said first die lip toward said second die lip comprises advancing said second die lip toward said first die lip such that said first die lip and said second die lip move equal distances but in opposite directions.3. The method of claim 2 , wherein advancing said first die lip claim 2 , advancing said second die lip claim 2 , and advancing said land channel body comprises simultaneously advancing said first die lip claim 2 , advancing said second die lip claim 2 , and advancing said land channel body.4. The method of claim 1 , wherein said first die body has a first flow channel face claim 1 , said second die body has a ...
Подробнее