Technical Specification for arcon Coatings

Transcription

1 Technicl Specifiction for rcon Cotings Issue: File: Technicl Specifiction for rcon Cotings.doc Pge of 2

2 Scope of vlidity The Technicl Specifiction for rcon Cotings pplies to ll low-e nd solr control cotings for glzing in norml residentil houses or commercilly used uildings produced t the loctions Feuchtwngen nd Buch. The coted glss referred to in this specifiction is flot glss, thermlly toughened sfety glss, lminted sfety glss mde of thermlly toughened sfety glss nd lminted sfety glss coted y mgnetron sputtering. 2 References to stndrds nd guidelines (in the respectively newest vlid edition) DIN EN 096: Glss in the uilding - coted glss DIN EN 72: DIN EN 20: DIN EN 863: DIN EN 243: DIN 896-6: DIN EN 40: DIN EN 2898: DIN 033: DIN 674: Glss in the uilding Bsic sod lime silicte glss products Glss in the uilding - Thermlly toughened sod lime silicte sfety glss Glss in the uilding - Prtilly pre-stressed lime sod glss Glss in the uilding - Lminted glss nd lminted sfety glss Opticl cotings - Prt 6: Testing of the dhesion with tpe Glss in the uilding Determintion of luminous nd solr chrcteristics of glzing Glss in the uilding - Determintion of the emmissivity Colorimetry Colorimetric mesures Colorimteric evlution of colour differences of surfce colours ccording to the CIELAB formul GEPVP Code of Prctice for in-situ Mesurement nd Evlution of the Colour of Coted Glss used in Fcdes (issued y Europen Assocition of Flt Glss Mnufcturers ) Germn Buregelliste A prt chpter Products for uildings mde of glss Guideline for the ssessment of the visul qulity of glss in uilding (Hdmr) Guideline for the ssessment of the visul qulity of screen printing (BV Flchglsgroßhndel, Isolierglsherstellung, Veredelung e.v.) Guidelines for processing rcon soft cotings Guidelines for processing rcon het tretle cotings 3 Prmeters nd terms The prmeters nd terms used in this specifiction re defined in References to stndrds nd guidelines. File: Technicl Specifiction for rcon Cotings.doc Pge 2 of 2

3 4 Requirements on prmeters for energy retention nd therml insultion The specifictions for the photometric nd energetic prmeters re vlid for specific uild-up IGU mentioned in the currently vlid test certificte. The prmeters of the photometric nd energetic properties of the coted single pne listed in Tle, which re necessry for energy retention nd therml insultion, re determined y clcultion nd/or mesurement ccording to DIN EN 40. The emissivity rting is determined ccording to DIN EN The requirements specified in Tle re pplicle. T. : Specifiction of photometric nd energetic prmeters Prmeter Determined Determined Specified Requirement ccording to vlue vlue Light Trnsmission EN 40 v,m v,d v,m = v,d ± 0.03 Light Reflectnce EN 40 ρ v,m ρ v,d ρ v,m = ρ v,d ± 0.03 Solr Energy EN 40 e,m e,d e,m = e,d ± 0.03 Trnsmission Solr Energy EN 40 ρ e,m ρ e,d ρ e,m = ρ e,d ± 0.03 Reflectnce Norml Emissivity EN 2898 m d m d Coted glss y rcon is developed for the use in multiple insulting glss units. Tolernces for the coted single pne re given in Tle. Especilly when 2 coted single glss pnes re used in triple insulting glss units (TGU), tolernces for the photometric nd energetic prmeters of the TGU cn e incresed due to error propgtion. Colorimetric ssessment of coted glss. How to quntify colour The colour ppernce of surfce is influenced y three fctors: - the colour of the light source - the senstion of colour of n individul oserver (humn eye) - the colour of surfce The mesurement of the reflected light spectrum is suitle sis for the colorimetric mesurement of coted glss to ssess the exterior ppernce of fcde nd the trnsmitted spectrum to ssess the view through the glss. Explicit vlues cn e determined from the spectr to descrie the colour (stndrd light source D6, 2 or 0 stndrd oserver). In the CIELAB colour spce, the L vlue designtes the rightness, designtes the red nd green proportions nd the yellow nd lue proportions. The colour nd rightness cn therey e explicitly descried y point Index m: indictes tht the specified vlue is vlue determined y mesurement or clcultion Index d: indictes tht the specified vlue is fixed vlue File: Technicl Specifiction for rcon Cotings.doc Pge 3 of 2

4 in three-dimensionl system of co-ordintes. Using the indices P (smple ) nd P2 (smple 2), for the colours to e compred, the following pplies: L () (2) (3) L P L P2 P P2 P P2 The colour difference E is clculted using the following formul: E ( L ) (4).2 How to mesure colour The prmeters L, nd cn e mesured y spectrophotometers used in the fctory ut lso y using colorimeters which cn e hndheld instruments nd of smll size, directly usele on site. These instruments hve the sme response to colour s the humn eye. Since the colour mesurement re referenced to the stndrd light source D6 nd the 2 stndrd oserver precise results independent of externl fctors like dy time, environment, ckground, etc. cn e derived..3 Colour inconsistencies in the fçde.3. Colour inconsistencies in reflection within one glss pne (e.g. Bnds or stins) Colour inconsistencies in reflection within the sme glss pne cn e mesured with portle colorimeter y mesuring the colorimetric prmeters L, nd in minimum points in every zone in question 2 (see exmple on fig.) zone zone 2 Point Point 2 Point, 2 Point 3 Point 3 Point 4 Point Point 4, Fig.: Colour inconsistencies within the sme glss pne 2 Remrk: In order to void mesurement errors due to edge effects the mesurement must not e mde in zone of 20 cm long the edges. File: Technicl Specifiction for rcon Cotings.doc Pge 4 of 2

5 The first step is clculting the verge of the L, nd vlues mesured in ech zone referring formul () (0). L zone Ll l L zone2 L () (8) k k zone l l zone2 (6) (9) k k zone l l zone2 (7) (0) n k The difference of the L, nd vlues etween the 2 zones is clculted using the following equtions () (3): L L zone2 L zone () zone2 zone (2) zone2 zone (3) Finlly the colour difference E etween the 2 zones is clculted using eqution (4). File: Technicl Specifiction for rcon Cotings.doc Pge of 2

6 .3.2 Colour differences in reflection etween djcent pnes In this cse one pne (e.g. pne 9) is compred to the verge of the surrounding pnes (pnes 8) in reference to figure Fig.3: Mesurement pne Fig.2: Colour inconsistencies etween djcent pnes For every IGU the L, nd vlues re mesured on positions long the digonls with hndheld colorimeter (see fig. 3). The verge of L, nd is clculted y using formul (4) (9). L pne l L l L pne9 L (4) (7) k k pne l l pne9 () (8) k k pne l l pne9 (6) (9) k k The next step is clculting the difference etween the verge vlues of pnes 8 nd pne 9 using the following equtions (20) (22): 3 Remrk: Glsses with sme thickness ut nneled nd tempered must e considered s the sme nd the very nture of tempering the sustrtes should not ffect the colour. File: Technicl Specifiction for rcon Cotings.doc Pge 6 of 2

7 L L pne9 L pne 8 (20) pne9 pne 8 (2) pne9 pne 8 (22) Finlly the colour difference E etween pne 9 nd the djcent pnes 8 is clculted using eqution (4)..4 Tolernces For the descried cses.3. nd.3.2 (fçde) the tolernces re s follows (see Tle 2): T. 2: Mximum colour intervls for rcon solr control cotings (Sunelt) nd rcon low-e cotings Mximum Coting Product colour intervls Position Solr control cotings Low-e cotings E E 3 not specified 3. The production tolernces re mintined to ensure tht homogeneous colour ppernce of the uildings fçde s specified in tle 2 is ccomplished. File: Technicl Specifiction for rcon Cotings.doc Pge 7 of 2

8 . Angle dependence of rchitecturl cotings The colour ppernce of low-e nd solr control cotings especilly with high selectivity chnges with ngle of view. These vritions cn only e mesured in lortory on smll smple. Currently there is no on site instrument on the mrket. Consequently the homogeneity of the colour of the fçde viewed under n ngle cn only e evluted y visul oservtion. The mximum ngle must not exceed 4 (see fig.4) Norml incidence Fig.4: Visul oservtion of ngle dependence File: Technicl Specifiction for rcon Cotings.doc Pge 8 of 2

9 .6 Generlly remrks on colour ssessment For the ssessment of the reflected colour (outside view of the fçde) solr control products (sunelt) must e plced on surfce #2 nd low-e products on surfce #3 in the IGU. The fçde is viewed norml the surfce. Differences of colour s viewed from the interior of the uilding re not considered s defect. In trnsmission colour differences my lso e oserved. These differences cnnot e mesured on site s no device is ville. This colour cn only e evluted y visul oservtion. The trnsmission s well s reflection colour is influenced not only y the coting ut lso y the glss type, glss thickness nd the uncoted pne in the IGU. One must relize tht the notion of colour is linked to the impression nd perception of the individul, the sensiility of the eye eing very personl chrcteristic. Furthermore, vriety of conditions ffect how colour looks, for instnce when oserving the fçde of uilding from the outside, Luminosity: drk covered sky nd very cloudy might revel colour differences, invisile under direct sunlight. Distnce nd ngle of oservtion. Type nd colour of mullions nd trnsoms. Distnce etween two djcent glss pnes. The eye of the oserver. Bckground: the sence of ny lighting in the uilding (drk ckground), might increse the perception of colour differences. Environment: presence or sence of other uildings which re likely to reflect in the fçde Thermlly toughened sfety glss demonstrte so-clled nisotropy effects in the form of stripes or circles of grey or coloured reflexes. The visiility of the nisotropies in het treted glss depends on the wether nd the ttitude of the sun, the type nd thickness of the glss nd the viewing ngle nd cn e further reinforced nd chnged in colour if the glss is coted. Anisotropy effects re inherent to the mnufcturing process. They re not regrded s cuse for complint. Het strengthened sfety glss with no opque silk-screen print (depended on the individul design) cnnot e colour mesured relile. File: Technicl Specifiction for rcon Cotings.doc Pge 9 of 2

10 6 Requirements on the mechnicl properties There is no generlly cknowledged stndrd for tests on the scrtch resistnce of coted glss. rcon monitors oth the scrtch resistnce nd the delmintion resistnce during production y n internl compny test method. The ssessment of the dhesion strength on site is conducted ccording to DIN 896-6, using commonly ville, trnsprent dhesive tpe type Tes 7370 from Beiersdorf. The lods on the tested smples re exerted ccording to resolution K s specified in Section 4 of the ove stndrd. In cse of clims rcon reserves the right to verify the mechnicl properties with these internl procedures in order to evlute the clim closing. File: Technicl Specifiction for rcon Cotings.doc Pge 0 of 2

11 7 Defect ssessment of coted glss 7. Assessment of stock sizes nd cut sizes of coted glss respectively The ssessment of coted glss is conducted on the sis of DIN EN The cceptnce criteri for defects s descried in Section 7.4 of this stndrd re contined in Tle 3. T. 3: Acceptnce criteri for defects in coted glss ccording to DIN EN 096- Acceptnce criteri Fult type Pne to pne Individul pne Centrl re Edge zone Dot-shped defects: Not pplicle Stins/needlepoint defects; > 3 mm Not permitted Not permitted >2 mm nd 3 mm Permitted when not more thn /m² Permitted when not more thn /m² Nesting; Not permitted Permitted when in the viewing zone Scrtches: > 7 mm Not permitted Permitted when they re more thn 0 mm from ech other 7 mm Permitted when the locl density is not visully distrcting Permitted when the locl density is not visully distrcting File: Technicl Specifiction for rcon Cotings.doc Pge of 2

12 7.2 Assessment of insulting glss units (IGU) The ssessment of insulting glss units ssemled with coted glss is conducted within the principles of the Guidelines for the ssessment of the visul qulity of glss in uilding 4, excerpts of which re contined in Tle 4. This guideline is n cknowledged nd ccepted principle for the ssessment of defects in IGU. T. 4: Permissile vlues for the ssessment of glss in uilding (in conjunction with coted glss) Zone Permissile per unit: Inclusions, ules, spots, lemishes etc.: Pne re m²: < 3mm Pne re > m²: < 3mm per peripherl m of edge length Residues (spot-shped) in the pne interstice: R Pne re m²: mx. < 3mm Pne re > m²: < 3mm per peripherl m of edge length Residues (wide-re) in the pne interstice: whitish grey or trnsprent mx. 3cm² Scrtches: sum of individul lengths: mx. 90 mm individul length: mx. 30 mm Hirline scrtches: not dmissile in clusters Inclusions, ules, spots, lemishes etc.: Pne re m²: mx. < 2mm m² < pne re 2m²: mx. < 2mm H Pne re > 2m²: < 2mm Scrtches: sum of individul lengths: mx. 4 mm individul length: mx. mm Hirline scrtches: not dmissile in clusters Mx. numer of permissile vlues s in zone R Inclusions, ules, spots, lemishes etc. of 0.<.0 mm re permissile without restriction to R + H zone, except in clusters. A cluster is regrded to exist when t lest 4 inclusions, ules, spots, lemishes etc. exist within circulr re with dimeter of 20 cm. Notes: Defects 0. mm re not tken into ccount. Existing distrctions (hlos) must not e lrger thn 3 mm. Lminted glss:. The permissile vlues in zones R nd H re incresed in their frequency y 0% per lminted glss sheet. 2. Production-relted ripples cn occur in epoxy resin pnes. Explntions: R = Edge zone (re 0% of the respective overll width nd height, less stringent ssessment) H = Min zone (most stringent ssessment) 4 pulished y the Germn trde ssocition of glzing crftsmen, Hdmr nd the Germn ssocition of flt glss wholeslers, insulting glss mnufcturers nd refiners of Troisdorf File: Technicl Specifiction for rcon Cotings.doc Pge 2 of 2