CA2201499C - Procede et machine permettant d'obtenir du ptfe de forme allongee, et ptfe allonge utilise notamment comme soie dentaire - Google Patents
Procede et machine permettant d'obtenir du ptfe de forme allongee, et ptfe allonge utilise notamment comme soie dentaire Download PDFInfo
- Publication number
- CA2201499C CA2201499C CA 2201499 CA2201499A CA2201499C CA 2201499 C CA2201499 C CA 2201499C CA 2201499 CA2201499 CA 2201499 CA 2201499 A CA2201499 A CA 2201499A CA 2201499 C CA2201499 C CA 2201499C
- Authority
- CA
- Canada
- Prior art keywords
- tape
- ptfe
- dental floss
- ptfe material
- opposite faces
- 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.)
- Expired - Fee Related
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 167
- 239000000463 material Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 63
- 241000628997 Flos Species 0.000 title claims description 57
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 165
- 230000009467 reduction Effects 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000005245 sintering Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 description 39
- 239000011521 glass Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 7
- -1 polyethylene Polymers 0.000 description 7
- 229920000877 Melamine resin Polymers 0.000 description 6
- 238000003490 calendering Methods 0.000 description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 6
- 239000002243 precursor Substances 0.000 description 6
- 239000001993 wax Substances 0.000 description 6
- 206010061592 cardiac fibrillation Diseases 0.000 description 5
- 230000002600 fibrillogenic effect Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 108700040458 Drosophila Strn-Mlck Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004624 confocal microscopy Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 230000037123 dental health Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000000178 monomer Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
On obtient du PTFE (polytétrafluoroéthylène) de forme allongée en faisant défiler une bande de PTFE non frittée au contact d'une surface chauffée, tout en appliquant une tension à cette bande de façon que, lorsque sa température s'élève au contact de cette surface (8), elle soit étirée dans le sens longitudinal tout en subissant une réduction simultanée de largeur et d'épaisseur. On peut produire des bandes de PTFE présentant des propriétés différentes, c'est-à-dire des coefficients de friction différents sur leurs deux faces. Ces bandes conviennent pour une utilisation en tant que soie dentaire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002517368A CA2517368C (fr) | 1994-10-03 | 1995-10-02 | Procede et machine permettant d'obtenir du ptfe de forme allongee, et ptfe allonge utilise notamment comme soie dentaire |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9419859.5 | 1994-10-03 | ||
| GB9419859A GB9419859D0 (en) | 1994-10-03 | 1994-10-03 | Method and apparatus for forming elongate PTFE material and PTFE material particularly dental floss |
| PCT/GB1995/002325 WO1996010478A1 (fr) | 1994-10-03 | 1995-10-02 | Procede et machine permettant d'obtenir du ptfe de forme allongee, et ptfe allonge utilise notamment comme soie dentaire |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002517368A Division CA2517368C (fr) | 1994-10-03 | 1995-10-02 | Procede et machine permettant d'obtenir du ptfe de forme allongee, et ptfe allonge utilise notamment comme soie dentaire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2201499A1 CA2201499A1 (fr) | 1996-04-11 |
| CA2201499C true CA2201499C (fr) | 2006-10-31 |
Family
ID=29404339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2201499 Expired - Fee Related CA2201499C (fr) | 1994-10-03 | 1995-10-02 | Procede et machine permettant d'obtenir du ptfe de forme allongee, et ptfe allonge utilise notamment comme soie dentaire |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2201499C (fr) |
-
1995
- 1995-10-02 CA CA 2201499 patent/CA2201499C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2201499A1 (fr) | 1996-04-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20151002 |