The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2001
Filed:
Jan. 28, 2000
Hiroshi Ikegami, Osaka, JP;
Susumu Okairi, Osaka, JP;
Totaku Industries, Inc., Takatsuki, JP;
Abstract
There is provided a sound-absorbing and a heat-insulating duct comprising a nonwoven cloth layer,, a reinforcing core,, a foam strip layer,, a bonding resin,and resin-coating layer,. The nonwoven cloth layer,is formed by wound spirally a nonwoven cloth,into a tube-like shape in which adjacent side edges of the adjacent nonwoven cloths,are brought in abutment against or lapped with each other so as to form a bonding portion,. The reinforcing core,made of hard synthetic resin material is wound spirally on the bonding portion,while a surface of the reinforcing core,being brought into contact with the nonwoven cloth,is welded or bonded to the nonwoven cloth,. The foam strip layer,is formed by wound spirally a foam resin strip,having a width approximately equal to a width of the nonwoven cloth,. Both adjacent edges,of the foam resin strip are disposed on adjacent reinforcing cores,respectively. The bonding resin,is applied to a side surface,B of the foam strip,and a part,A of the reinforcing core,. The resin-coating layer,is provided to cover an outer circumferential surface of the foam strip layer,. Accordingly, it is possible to provide a sound-absorbing and heat-insulating functions, which is suitable for use as an air-blow duct, and which is suitable for continuous production so that the duct can be mass-produced inexpensively.