Title:
HOT MELT ADHESIVE COATING DEVICE EQUIPPED WITH DIFFERENTIAL PRESSURE HOT MELT ADHESIVE FLOW METER
Document Type and Number:
WIPO Patent Application WO/2021/033780
Kind Code:
A1
Abstract:
[Problem] To improve the measurement accuracy of a hot melt adhesive flow meter and simplify the structure of the hot melt adhesive flow meter by applying a differential pressure flow meter to the measurement of the flow rate of a hot melt adhesive of which the viscosity varies by a temperature. [Solution] In a coating device using a viscous hot melt adhesive as a coating material, a differential pressure hot melt adhesive flow meter is provided which has a measurement flow path, and displays the flow rate by calculating the flow rate on the basis of a pressure difference between both sides of the measurement flow path. The measurement flow path of the differential pressure hot melt adhesive flow meter is configured by a flow rate measurement plate of a flat plate having a linear vertical groove having a square cross section, a plurality of flow rate measurement plates having different cross-sectional areas of the vertical groove are provided, and the cross-sectional area of the measurement flow path of the flow rate measurement plate to be used is selected according to the viscosity of the hot melt adhesive used in the coating device.
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Inventors:
HIDAKA SHOJI (JP)
SINAGAWA HIROSHI (JP)
SINAGAWA HIROSHI (JP)
Application Number:
PCT/JP2020/032493
Publication Date:
February 25, 2021
Filing Date:
August 17, 2020
Export Citation:
Assignee:
SUN TOOL CORP (JP)
International Classes:
B05C5/04; B05C11/00; G01F1/42
Domestic Patent References:
WO2006079669A1 | 2006-08-03 |
Foreign References:
JPH01168827U | 1989-11-28 | |||
JP2015531880A | 2015-11-05 | |||
JPS61184922U | 1986-11-18 | |||
JP2017191090A | 2017-10-19 |
Attorney, Agent or Firm:
OKUMURA Fumio (JP)
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