Methods and systems for addition of cellulose ether to...

B - Operations – Transporting – 28 – B

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B28B 5/02 (2006.01)

Patent

CA 2678372

An example system for making a gypsum board product comprises a container for containing a gypsum slurry, a moving receiver in communication with the container, wherein the container substantially continuously deposits the gypsum slurry on the moving receiver. A first and at least a second cellulose ether supply containing a first cellulose ether communicate with the container. The first and second supplies contain cellulose ethers having different physical or chemical properties. A controller is configured to change the amount of the first and second cellulose ethers delivered to the container in response to a change in at least one slurry physical property.

La présente invention concerne un système exemplaire de réalisation d'un produit de plaque de plâtre comprenant un récipient destiné à contenir une pâte de plâtre, un récepteur mobile en communication avec le récipient, selon lequel le récipient dépose de manière sensiblement continue la pâte de plâtre sur le récepteur mobile. Un premier et au moins un second approvisionnement en éther de cellulose contenant un premier éther de cellulose communiquent avec le récipient. Les premier et second approvisionnements contiennent des éthers de cellulose présentant différentes propriétés physiques ou chimiques. Un dispositif de commande est configuré de manière à modifier la quantité des premier et second éthers de cellulose distribués au récipient en réponse à une modification d'au moins une propriété physique de la pâte.

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