KR20090066692A - 불량 pla시트를 이용한 pla재생칩 제조방법 - Google Patents
불량 pla시트를 이용한 pla재생칩 제조방법 Download PDFInfo
- Publication number
- KR20090066692A KR20090066692A KR1020070134362A KR20070134362A KR20090066692A KR 20090066692 A KR20090066692 A KR 20090066692A KR 1020070134362 A KR1020070134362 A KR 1020070134362A KR 20070134362 A KR20070134362 A KR 20070134362A KR 20090066692 A KR20090066692 A KR 20090066692A
- Authority
- KR
- South Korea
- Prior art keywords
- pla
- sheet
- defective
- strands
- chip
- 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.)
- Ceased
Links
- 230000008929 regeneration Effects 0.000 title claims abstract description 15
- 238000011069 regeneration method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000002950 deficient Effects 0.000 title abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 abstract description 15
- 229920000747 poly(lactic acid) Polymers 0.000 description 75
- 239000004626 polylactic acid Substances 0.000 description 75
- 239000000498 cooling water Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920006381 polylactic acid film Polymers 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims (2)
- 95%이상 PLA가 함유된 PLA 조성물을 소재로 PLA시트 제조 시에 발생한 불량 PLA시트들을 수거하여 잘게 분쇄하고, 170℃ 내지 230℃로 가열하여 액화한 후 2㎜ 내지 8㎜ 두께의 PLA가닥들로 압출한 직후에 냉각하고, 상기 냉각된 PLA가닥들을 칩형태로 얇게 절단하여서 PLA재생칩을 제조함을 특징으로 하는 불량 PLA시트를 이용한 PLA재생칩 제조방법.
- 제 1항에 있어서,액화한 PLA시트 용융액을 PLA가닥들로 압출 시에는 압출되는 각각의 PLA가닥이 서로 간섭받지 않고 배출되도록 하여서 제조함을 특징으로 하는 불량 PLA시트를 이용한 PLA재생칩 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070134362A KR20090066692A (ko) | 2007-12-20 | 2007-12-20 | 불량 pla시트를 이용한 pla재생칩 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070134362A KR20090066692A (ko) | 2007-12-20 | 2007-12-20 | 불량 pla시트를 이용한 pla재생칩 제조방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20090066692A true KR20090066692A (ko) | 2009-06-24 |
Family
ID=40994651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070134362A Ceased KR20090066692A (ko) | 2007-12-20 | 2007-12-20 | 불량 pla시트를 이용한 pla재생칩 제조방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20090066692A (ko) |
-
2007
- 2007-12-20 KR KR1020070134362A patent/KR20090066692A/ko not_active Ceased
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A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 20071220 |
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PA0201 | Request for examination | ||
N231 | Notification of change of applicant | ||
PN2301 | Change of applicant |
Patent event date: 20080509 Comment text: Notification of Change of Applicant Patent event code: PN23011R01D |
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E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20090520 Patent event code: PE09021S01D |
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PG1501 | Laying open of application | ||
E601 | Decision to refuse application | ||
PE0601 | Decision on rejection of patent |
Patent event date: 20091030 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 20090520 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |