| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ec17b3a1c230b4498330eb2adcd3d70f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1ffcccde0a12028e08cdbf6e6d653c3d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C33-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C44-588 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K105-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K75-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C33-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C44-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C33-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C59-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C33-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29B13-00 |
| filingDate |
1981-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_52c7bb0c7e69c51286b975a376669336
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1fefd030f12921cdf5047c14b134d02a |
| publicationDate |
1982-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-S57128522-A |
| titleOfInvention |
Vent plug structure of mold for expansion molding of urethane resin |
| abstract |
PURPOSE:To prevent the clogging of a vent plug due to a foamable composition and maintain a venting capability by a method wherein a vent plug is formed of a porous body of polytetrafluoroethylene (PTFE) with a non-fibril construction having a specified apparent specific gravity and a specified air permeation resistance. CONSTITUTION:A porous body of PTFE with the non-fibril construction having a thickness of at least 0.5mm., an apparent specific gravity of 0.8-1.8 and an air permeation resistance of 0.1-2 so as to be free from clogging due to entering of a foamable urethane composition into the pores of the porous body, retain its venting capability, have an appropriate strength and prevent the finished surface of a molded article from being impaired, is produced by compressing a fired powder of PTFE to obtain a preform, followed by free sintering. The vent plug structure of a mold for expansion molding of a urethane resin is obtained by fixing the porous body 11 of PTFE at a position such as to shield the hollow part of a heat-resistant hollow protective pipe 12 provided by a screw means. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022177435-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110181737-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013188912-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-3018721-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-4205940-A1 |
| priorityDate |
1981-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |