macchine e attrezzature - Macplas

● rubriche e varie ●
dologia simile all’Appendice A della UNI EN
13655 (Materie plastiche - Film termoplastici
per pacciamatura per uso in
agricoltura ed orticoltura) tenendo presente
che la trasmittanza per i film biodegradabili
nel campo della luce visibile è del 3%.
È stata discussa poi una più oggettiva correlazione
fra la classe di durata dei film e
l’effettiva funzionalità agronomica in campo
del film per definire un metodo che permetta
di valutare il danneggiamento. Il danneggiamento
del film è spesso tale da non pregiudicare
la resa agronomica della coltura se
questa è già a un certo stadio di crescita.
L’idea è quella di introdurre una tolleranza
temporale nella classificazione che coincida
al limite inferiore con il danneggiamento
ammesso in termini di superficie non coperta
del film, che non pregiudica la crescita
delle colture. La scelta del campione su cui
effettuare la misura sarà effettuata secondo
una tecnica statistica impiegata in agronomia
per la rilevazione delle caratteristiche
delle colture.
Sistemi di scarico
Nella riunione del 28 aprile del CEN TC
155/WG6 (Systems for soil and waste discharge
- PVC-U) tenutasi a Parigi, cui ha
partecipato, quale delegato italiano, Federico
Giuliani (Redi), sono stati rivisti e discussi
i seguenti documenti:
FprCEN/TR 1401-2 Plastics piping systems
for non-pressure underground
drainage and sewerage - Unplasticized
poly(vinyl chloride) (PVC-U) - Part 2:
Guidance for assessment of conformity
FprCEN/TR 1329-2 Plastics piping systems
for soil and waste discharge (low
and high temperature) within the building
structure - Unplasticized poly(vinyl chloride)
(PVC-U) - Part 2: Guidance for the
assessment of conformity
FprCEN/TR 1455-2 Plastics piping systems
for soil and waste discharge (low
and high temperature) within the building
structure - Acrylonitrile-butadiene-styrene
(ABS) - Part 2: Guidance for the assessment
of conformity
FprCEN/TR 1565-2 Plastics piping systems
for soil and waste discharge (low
and high temperature) within the building
structure - Styrene copolymer blends
(SAN+PVC) - Part 2: Guidance for the assessment
of conformity
FprCEN/TR 1566-2 Plastics piping systems
for soil and waste discharge (low
and high temperature) within the building
structure - Chlorinated poly(vinyl chloride)
(PVC-C) - Part 2: Guidance for assessment
of conformity.
Il CEN TC 155/WG6 ha intenzione di proporre
al CEN TC 155 per tutte le norme di
interesse riguardanti il PVC una deviazione
del valore K di ±3.
56 ● Macplas 316
m
R
iportiamo qui di seguito l’elenco dei
progetti di norma ISO e CEN inviati in
inchiesta pubblica nei mesi di febbraio,
marzo e aprile per il settore materie
plastiche e gomma. Ulteriori informazioni riguardanti
le materie plastiche possono essere
richieste a UNIPLAST - tel 02 8056684
- fax 02 8055058 - e-mail: uniplast@uniplast.info
ISO TC 45 (Rubber and Rubber Products)
ISO TC 45 SC 4 N 777 - New work item proposal
on flexible cellular polymeric materials
- Determination of fatigue by constant-load
pounding
ISO TC 45 SC 4 N 788 - ISO CD
6072.2 Rubber - Compatibility between hydraulic
fluids and standard elastomeric materials
ISO TC 45 SC 4 N 793 - ISO 11193-1-1-
2008 DAM 1 Single-use medical examination
gloves - Part 1-1-Specification for gloves
made from rubber latex or rubber solution.
ISO TC 61 (Plastics)
ISO CD 4892-2 Plastics - Methods of exposure
to laboratory light sources - Part 2_Xenon-arc
lamps
ISO TC 61/SC11 N 971 - High-pressure decorative
laminates (HPL) - Sheets based on
thermosetting resins (usually called laminates)
- Part 1: Introduction and general Information
ISO TC 61/SC11 N 972 - High-pressure
decorative laminates (HPL) - Sheets
based on thermosetting resins (usually called
laminates) - Part 2: Determination of
properties
ISO TC 61/SC11 N 973 - High-pressure decorative
laminates (HPL) - Sheets based on
thermosetting resins (usually called laminates)
- Part 3: Classification and specifications
for laminates less than 2 mm thick intended
for bonding to supporting substrates
ISO TC 61/SC11 N 974 - High-pressure decorative
laminates (HPL) - Sheets based on
thermosetting resins (usually called laminates)
- Part 4: Classification and specifications
for compact laminates of thickness 2
mm and greater
ISO TC 61/SC11 N 975 - High-pressure decorative
laminates (HPL) - Sheets based on
thermosetting resins (usually called laminates)
- Part 5: Classification and specifications
for flooring grade laminates less than 2
mm thick intended for bonding to supporting
substrates
ISO TC 61/SC11 N 976 - High-pressure decorative
laminates (HPL) - Sheets based on
thermosetting resins (usually called laminates)
- Part 6: Classification and specifications
for exterior-grade compact laminates
of thickness 2 mm and greater
ISO TC 61/SC11 N 977 - High-pressure decorative
laminates (HPL) - Sheets based on
thermosetting resins (usually called laminates)
- Part 7: Compact laminate and HPL
composite panels for internal and external
wall and ceiling finishes
ISO/TC 61/SC 9 N 1419 ISO/CD 2561 Pla-
Normativa tecnica
stics - Determination of residual styrene monomer
in polystyrene (PS) and impact-resistant
polystyrene (PS-I) by gas chromatography
ISO/TC 61 / SC 11 N 987 - ISO/CD 13636
Plastics - Film and sheeting - Non-oriented
poly(ethylene terephthalate) (PET) sheets
ISO/TC 61 / SC 5 N 1151 - ISO/CD 13975
Plastics - Determination of the ultimate
anaerobic biodegradation of plastic materials
under controlled slurry phase systems -
Method by measurement of biogas production
ISO/TC 61/SC 12 N 695 - CD 14322 Plastics
- Epoxy resins - Determination of degree
of cure for cured epoxy resin by differential
scanning calorimetry
ISO/TC 61 / SC 2 N 1196 - ISO/CD 17282
Plastics - Guide to the acquisition and presentation
of design data - Amendment 1
ISO/TC 61 / SC 5 N 1152 - ISO/CD 17556
Plastics - Determination of the ultimate aerobic
biodegradability of plastics materials in
soil by measuring the oxygen demand in a
respirometer or the amount of carbon dioxide
evolved
ISO/TC 61/SC 11 N 978 _ NWIP 11963 PC
sheets
FprEN ISO 179-1 - Plastics - Determination
of charpy impact properties - Part 1: Non-instrumented
impact test (ISO/FDIS 179-
1:2010).
ISO TC 138 (Plastics Pipes, Fittings
and Valves for the Transport of Fluids)
ISO/DIS 9080 Plastics piping and ducting
systems - Determination of the long-term
hydrostatic strength of thermoplastics materials
in pipe form by extrapolation
ISO/DIS 11296-7 Plastics piping systems
for renovation of underground non-pressure
drainage and sewerage networks - Part 7:
Lining with spirally-wound pipes
ISO/DIS 11299-1 - Plastics piping systems
for renovation of underground gas supply
networks - Part 1: General
ISO/DIS 11299-3 - Plastics piping systems
for renovation of underground gas supply
networks - Part 3: Lining with close-fit pipes
ISO/FDIS 22621-5 - Plastics piping systems
for the supply of gaseous fuels for maximum
operating pressures up to and including 2
MPa (20 bar) - Polyamide (PA) - Part 5: Fitness
for purpose of the system
ISO/FDIS 22621-6 - Plastics piping systems
for the supply of gaseous fuels for maximum
operating pressures up to and including 2
MPa (20 bar) - Polyamide (PA) - Part 6: Code
of practice for design, handling and installation
ISO/DIS 13056 Plastics piping systems -
Pressure systems for hot and cold water -
Test method for leaktightness under vacuum
ISO/FDIS 13257 - Thermoplastics piping systems
for nonpressure applications - Test
method for resistance to elevated temperature
cycling
ISO/FDIS 13260 - Thermoplastics piping systems
for nonpressure underground draina-