| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad2cd796f8c4dcb425ddcc68707d3444 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2307-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2307-518
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2250-244
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2995-0017
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2307-558
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2995-0089
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29L2009-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29L2007-008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2307-736
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2067-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2067-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C48-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C48-0018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C48-21
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D7-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B27-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C55-143
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C55-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B27-36 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29L7-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C55-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-08 |
| filingDate |
2020-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2fb80591eeed13c06bd715596c0da3f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_52e0555e18fd4b64d435ee03e9fa20de
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57b83dc5bc56c9f4fe05bb081f03a1d9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f0855ab5e4d2436f3bdb43a5aa9763fb |
| publicationDate |
2021-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2021125236-A1 |
| titleOfInvention |
Biaxially oriented polyester film and method for producing same |
| abstract |
Provided are a biaxially oriented polyester film having excellent impact strength and heat resistance, and a method for producing same. The method is for producing a biaxially stretched polyester film and includes the steps A to D indicated below. Step A: a step in which a composition containing a polyester resin in which Tc - (Tg+Tm)/2 is -25ºC to 30ºC inclusive is melt-extruded and an unstretched polyester resin composition sheet is obtained. Step B: a step in which the unstretched polyester resin composition sheet obtained in step A is heated in a range of Tg of the polyester resin + 5 (ºC) to Tg of the polyester resin + 40 (ºC) inclusive, stretching is performed in the lengthwise direction in a range in which the stretch ratio is 2-6 times, and a uniaxially oriented polyester resin composition film is obtained. Step C: a step in which the uniaxially oriented polyester resin composition film obtained in step B is heated in a range of Tc of the polyester resin - 46 (ºC) to Tc of the polyester resin + 25 (ºC) inclusive, stretching is performed in the width direction in a range in which the stretch ratio is 4-8 times, and a biaxially oriented polyester resin composition film is obtained. Step D: a step in which the biaxially oriented polyester resin composition film obtained in step C is heated in a range of Tm of the polyester resin - 40 (ºC) to Tm of the polyester resin - 5 (ºC) inclusive while relaxing the film in a range of 3-20% in the width direction thereof. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023178369-A1 |
| priorityDate |
2019-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |