APPLICATION LIQUID FEED APPARATUS

• Main Author: KUMAGAI KATSUTO
• Format: Patent
• Language: English
• Published: 07.04.2011
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; PRINTING MACHINES OR PRESSES; SPRAYING OR ATOMISING IN GENERAL; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To provide an application liquid feed apparatus which suppresses an internal pressure variation in a doctor chamber when an application liquid is sucked out of the doctor chamber, and can be installed in a small space as much as possible. SOLUTION: The application liquid feed apparatus includes: a storage tank which stores the application liquid; a feeding pump which feeds the application liquid L stored in the storage tank to a body of the doctor chamber through an extruding hose; and a suction pump which discharges the application liquid stored in the body of the doctor chamber by suction to the storage tank through a drawing hose. The doctor chamber includes: an introducing section which connects the extruding hose with the body, and introduces the application liquid fed by the feeding pump to the body; and a lead-out section 33 which connects the drawing hose with the body, and is equipped with a tubular joint 33a for leading out a part of the application liquid L which has been introduced to the body by the introducing section. The doctor chamber is constituted so as to have a hole 33b at the top surface of the joint 33a of the lead-out section 33. COPYRIGHT: (C)2011,JPO&INPIT