JPS522501A - Construction of acoustic absorbing material - Google Patents

Construction of acoustic absorbing material

Info

Publication number
JPS522501A
JPS522501A JP50076999A JP7699975A JPS522501A JP S522501 A JPS522501 A JP S522501A JP 50076999 A JP50076999 A JP 50076999A JP 7699975 A JP7699975 A JP 7699975A JP S522501 A JPS522501 A JP S522501A
Authority
JP
Japan
Prior art keywords
construction
acoustic absorbing
absorbing material
acoustic
bubbles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP50076999A
Other languages
Japanese (ja)
Inventor
Masao Kumagai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP50076999A priority Critical patent/JPS522501A/en
Publication of JPS522501A publication Critical patent/JPS522501A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide means for intensifying acoustic absorbing effect in construction of the acoustic absorbing material by forming cavities on the surface of the acoustic resistant material containing bubbles in a state of uniform dispersion within its body, the cavities being sufficiently larger in volume than the bubbles.
COPYRIGHT: (C)1977,JPO&Japio
JP50076999A 1975-06-24 1975-06-24 Construction of acoustic absorbing material Pending JPS522501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50076999A JPS522501A (en) 1975-06-24 1975-06-24 Construction of acoustic absorbing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50076999A JPS522501A (en) 1975-06-24 1975-06-24 Construction of acoustic absorbing material

Publications (1)

Publication Number Publication Date
JPS522501A true JPS522501A (en) 1977-01-10

Family

ID=13621463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50076999A Pending JPS522501A (en) 1975-06-24 1975-06-24 Construction of acoustic absorbing material

Country Status (1)

Country Link
JP (1) JPS522501A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004323002A (en) * 2003-04-11 2004-11-18 Nishikawa Rubber Co Ltd Sound insulation sheet
JP2005022477A (en) * 2003-06-30 2005-01-27 Nishikawa Rubber Co Ltd Door structure for automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004323002A (en) * 2003-04-11 2004-11-18 Nishikawa Rubber Co Ltd Sound insulation sheet
JP2005022477A (en) * 2003-06-30 2005-01-27 Nishikawa Rubber Co Ltd Door structure for automobile

Similar Documents

Publication Publication Date Title
JPS5259086A (en) Absorbing material
JPS51129967A (en) Specific gravity separation of mixture
JPS522501A (en) Construction of acoustic absorbing material
JPS5352622A (en) Composition for preparation of bordeaux mixture
JPS5215335A (en) Pressure roller fixing device
JPS51124752A (en) A perpetual engine by buoyancy and gravity
JPS5213114A (en) Board for partition plate in tank
JPS5216091A (en) Stone cutting device
JPS5326312A (en) Preparation of antiphlogistic substance
JPS5245144A (en) Corrosion type tiolet trough
JPS53118120A (en) Pressure plate of copiers
JPS52132805A (en) Structural material for acoustic instrument
JPS543857A (en) Flexible high-specific gravity sheet
JPS51130954A (en) Manufacturing method for adiabatic materials
JPS5243258A (en) Hopper with powder positive port
JPS5220533A (en) Collision detection apparatus
JPS5266327A (en) Key inputting unit
JPS5248775A (en) Vibration attenuation material
JPS5217609A (en) Motor
JPS53133853A (en) Loading apparatus for long material
JPS5393782A (en) Preheating method of sealing resin in resin sealing and device for the same
JPS5282894A (en) Fire-resistant mixture
JPS51138586A (en) Water absorbing gel particle and its production process
JPS5335832A (en) Water-turbine casing
JPS5360487A (en) Control rod