FIELDS OF APPLICATION

Automotive

TPV, thermoplastic rubber PP compatible, are always more utilized in the automotive sector thanks to the low density of the product, to the consistency in time of its elastic-mechanical properties and mainly to the possibility of completely recycling of the waste.

Household appliances

TPV is resistant to detergents and organic fats even at high temperatures. These characteristics together with its elasticity are a very good reason for the replacement of vulcanized rubber.

Pipes

The high temperature resistance as well as the resistance to chemical agents make TPV the right compound for pipes manufacturing.

Glazing and sealing

TPV is a must for a field where good resilience, weatherability, elasticity at low temperatures as well, heat welding and resistance to vinyl paints are required.
TPV allows the co-extrusion with PP and other polyolefines.

Cables and gaskets

TPV has been approved for the production of external cables requiring a good electrical insulation and a very good resistance to UV and water.
TPV is also utilized for the production of gaskets for the electric sector.

Other application

Among other application, TPV finds a place into: steering wheels, trolley wheels and similar, knife handles and various tools.

Polyacetal are resins with high crystalline structure. Two are the main types:

- Homopolymer
- Copolymer

Homopolymer
The molecular structure of the Homopolymer, obtained by polymerization of Formaldehyde, presents several identical units:

– (– CH2O – ) n –

Homopolymer present a lower heat resistance and oxygen resistance either during processing or on the final product, having unstable links among its molecular structure, despite of better characteristics such as:

- higher melting point
- higher rigidity
- higher hardness
- shorter molding time
when compared to Copolymer.

Copolymer

In random positions of the Copolymer molecular structure, obtained by copolymerization of Trioxan (Formaldehyde Trimer) there is a different monomer:

HO – Y – [– (CH20)n – Y ] – CH2 – Y – H

The linear structure and its enhanced crystalline grade give the copolymer good physicalmechanical properties, for high-tech applications instead of other tech-polymers or even metal Also available with glass filling for injection molding of items where high stiffness, hardness, lower thermal deformation and low mold shrinkage are required.

Its characteristics are as follows:

- Toughness even at low temperatures
- Rigidity and hardness
- Creep resistance
- Thermal and dimensional stability
- Low friction coefficient
- Abrasion resistance
- Good electrical properties

Main fields of application

- Gas meter and water meter particulars
- Commuter disks ( current meters)
- Toothed gears and bearings
- Small gears for house appliances and automotive
- Car handle (doors and windows)
- Coils body, switches parts
- Cameras parts
- Bearing cages
- Pumps and parts related to gas feeding
- Gas tank cover
- Furniture accessories
- Small toys parts
- Hydraulic components
- Cloth washing and dish washing electro-valves and timers
- Lighter tanks
- Computer parts
- Zippers

Industrial grade Acetal

Industrial grade Acetal are in form of dull natural, medium flow and high flow types. Black is also available for general purpose. Reprocessing of Acetal, either from regrind or from pellets, can be successfully done because the loss of the main characteristics, due to further processing, is very small.
Obviously it is compulsory that the material must not be contaminated with foreign resins and thermal degradation has not occurred in previous processes.

PBT is a partially crystalline polymer obtained by Butanedial and Dimethyterephthalate condensation.
Main characteristics are:

- High stiffness
- High heat resistance
- High electrical characteristics
- Good chemical resistance
- High dimensional stability
- Low water absorption
- Good creep resistance

Main fields of application

Electrical

- Plugs
- Connectors
- Integrated circuit boards supports
- Switches
- Safety switches
- Relay parts
- Coil supports
- Carbon brushes holders
- Telephone parts
- Lamps holders

Automotive:

- Plugs covers
- Plugs distribution hub
- Air intakes
- Gasoline level indicators
- Pumps parts
- Doors handles
- Windows handles


Appliances:

- Microwave ovens
- Iron handles
- Coffee machines body
- Vacuum parts
- Toaster parts
- Fryer parts
- Kitchen handles and knobs

Office machines:

- Several components

Industrial grade PBT
PBT can be reprocessed many times without losing its characteristics. It is suggested though to apply fresh glass fiber in case of filled products in order to obtain better characteristics.
Conventional molding machines, in particular those able to process semi-crystalline resins, are used.
It is highly recommended to pre-dry the granules at about 100~120 °C for about 2~4 hours.

Molding parameters guide

Parameters                             Unfilled                                Glass filled
Temperatures °C
Cylinder                           230-235-250-245                   240-255-265-250
Mold                                     40~80                                     70~90
Injection speed                 Medium-High                                    High

1 - INDEX
Via G. Rossini, 22,
37060 CASTEL D'AZZANO (VR)
Tel: +39 045 8546201

2- POLYGLASS
Via dell'Artigianato, 34
Ponte di Piave 31047
Tel: +39 04227547

3 - VALLI ZABBAN
50019 Sesto Fiorentino (FI)
via Danubio, 10
Tel. 055/328041

4 - PLUVITEC
Via Quadrelli, 69,
37055 RONCO ALL'ADIGE (VR)
Tel: 045 6608111

5 - COPERNIT
Via Provinciale Est, 64
46020 Pegognaga (MN) – Italy
Tel: +39 0376 554911

6 - IMPER ITALIA
Via Volta, 8
10071 Mappano – Borgaro (TO)
tel. +39 011 222 55 00

7 - GENERAL MEMBRANE
Via Venezia, 28,
30022 CEGGIA (VE)
Tel: +39 0421 322000

8 - NOVAGLASS
V. GATTOLE, 1,
31040 SALGAREDA (TV)
Tel: 0422807486

9 - VETROASFALTO
Via Pascoli, 3,
20060 BASIANO (MI)
Tel: 02959831

10 - CASALI
ZONA INDUSTRIALE CIAF,
60020 CASTELFERRETTI (AN)

Nel 2014 la Raffineria IES di Mantova chiudera' la produzione di bitume industriale. 300.000 tonnellate di bitume/anno in meno per la produzione di membrane impermeabilizzanti. Restera' solo la API di Falconara. Sarebbe un monopolio, che porterebbe a prevedibili conseguenze, ma che comunque non soddisferebbe il fabbisogno del mercato nazionale.

Nel Medio Oriente, dove lo Stato interviene in queste politiche, hanno realizzato delle super-raffinerie, modernissime e tecnologiche. Difatti l'industria della produzione delle membrane in Egitto ed Arabia Saudita e' fiorente, ed esistono gia' progetti di delocalizzazione in Qatar. Quindi la soluzione e' andarsene? O di importare bitume dal Medio Oriente?

In Cina, dove il problema e' la scarsita' di bitume con conseguente prezzo elevato, hanno risolto il problema in maniera piu' pragmatica: ricavando bitume da altri materiali, facilmente reperibili ed a basso costo.

Si tratta di modificare le tecnologie per poter reggere l'impatto con la concorrenza, e bisogna farlo in fretta prima che sia troppo tardi.

Il prodotto alternativo c'e', si tratta dell'asfalto naturale, da cui si ricava bitume con un processo piuttosto semplice. Il materiale e' disponibile e per ora poco considerato dai laboratori di R&D italiani. Non altrettanto da quelli indiani e Cinesi: la sola Cina ha importato nel 2012/2013 40.000 tonnellate di asfalto naturale utilizzato che additivo per la produzione di bitume da fuel oil. Un esempio che meriterebbe di essere valutato e seguito, prima che sia troppo tardi.

Seven Seas Consulting
Natural Asphalt

Today we start with a new project.
Seven Seas Consulting blog to give informations and news on waterproofing world.
In this moment we have ZERO followers. It's normal when you open a new blog. Hope we will see new friends in the next future, bringing their experience to us. Thanks.
Diego Sala (SSC's CEO)