bibo:abstract
  • Injection molding is one of the most popular processes in plastic industry. Despite the significant progresses in technical point of view there are still problems to be solved in injection molding process. One of these problems is well-known weldline. A weldline is formed when the two flow front seperates and rejoins during the filling process. The flow front separation is caused by an obstruction in the cavity such as core, inserts and multiple gates. The typical occurrence of weldlines is one of the most undesirable phenomena in injection molding because the molded product's appearance is damaged and its strength is reduced considerably. A major factor which weakens the strength is the V-notch structure in its surface and parallel molecular orientation in inner structure. Several methods were tried to remove the weldline in injection-molded parts, but in fail. In the present paper a new technique to remove the weldline is proposed. This technique is named as "moving core method" for the moment, i.e., core moves into the cavity after the flow front passes the core region. The test results using "moving core method" will be shown with some theoretical consideration about weldlines. (rdf:langString) (en)
nlon:biographicalNote
  • 윤경환, 회원, 단국대학교 기계공학과, khyoon (rdf:langString) (dankook.ac.kr)
  • 조광환, 회원, 단국대학교 대학원 기계공학과 (xsd:string)
nlon:classificationNumberOfNLK
  • 550.5 (xsd:string)
nlon:containedIn
dc:creator
  • 윤경환 (xsd:string)
  • 조광환 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-30T23:37:12 (xsd:dateTime)
dcterms:description
  • (An)experimental study on the removal of weldline by moving core method (xsd:string)
bibframe:extent
  • 26 cm (xsd:string)
  • p. 1787-1794 (xsd:string)
dcterms:isPartOf
nlon:issuedYear
  • 2000 (xsd:string)
nlon:itemNumberOfNLK
  • 대446 (xsd:string)
rdfs:label
  • 이동식 코어를 적용한 웰드라인 제거에 관한 실험적 연구 / 윤경환, 조광환 (xsd:string)
dcterms:language
dc:subject
  • Frozen layer (xsd:string)
  • Moving core (xsd:string)
  • Weldline (xsd:string)
  • 고화층 (xsd:string)
  • 웰드라인 (xsd:string)
  • 이동식 코어 (xsd:string)
dcterms:title
  • 이동식 코어를 적용한 웰드라인 제거에 관한 실험적 연구 (xsd:string)
rdf:type
nlon:volumeOfNLK
  • 24(7) (xsd:string)