plasticizing range

Netstal-Maschinen AG

Plasticizing range Netstal solution expertise

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Increasing cost pressure and

higher quality standards for

moulded parts necessitate the

application of an injection

moulding machine optimally

tailored to the respective

product. Netstal original plasti-

cizing components provide

you with the decisive edge in

meeting high qualitative stand-

ards in terms of the melt and

plasticizing performance.

Fast, precise, reliable !

Three outstanding features of a

Netstal machine to enable the manu-

facture of complex moulded parts

in extremely short cycle times. The

primary factor in the moulded

part manufacturing process is the

plasticizing process – the transfor-

mation of plastic granules into a

processible melt form.

The development of a variety of new

plastics, particularly in the technical

sector, also necessitates continual

adaptation and modification of the

plasticizing system.

Increased wear as a result of abra-

sion, adhesion and corrosion due

to additives in the materials, as well

as constantly increasing material

throughput rates and higher process-

ing temperatures, all require maxi-

mum performance from all the plasti-

cizing components such as cylinders,

screws and back-flow stops.

Netstal is not only a supplier of

plasticizing components, but is also a

partner that offers solutions that are

precisely tailored to the outstanding

performance of Netstal machines.

Research and development

R & D plays a major role at Netstal-

Maschinen AG and our specialists

have longstanding experience in the

Netstal Support Concept

Plasticizing range

design of plasticizing components.

The production-based development

environment allows our team to

realise optimised application solutions

for screws, cylinders and back-flow

stops and make these available to our

partners, the Netstal machine users.

Application technology

Product-specific specialists are on

hand to help you select the best

possible Netstal component appli-

cation.

Uncompromising quality :

Uncompromising quality is

the benchmark for our plasticizing

component manufacturing process.

Your choice :

Netstal original plasticizing

components ( screws, cylinders and

back-flow stops ) !

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Our product managers in the

business units Caps and Closures,

Packaging, Medical, PET and our

optical and technical component

product managers are technical

specialists with in-depth knowledge

of their respective areas of res-

ponsibility.

The benefits to be gained from this

specialisation are clearly apparent:

competent and comprehensive con-

sulting that is tailored to your prod-

uct range. Spiralling demands on

production in terms of cost-efficiency

and quality necessitate the appli-

cation of appropriate machine equip-

ment, whereby plasticizing – and

specifically screw geometry – plays a

major role. Depending on the appli-

cation, ultra-fast, mild, highly accu-

rate or energy-optimised metering

may be required, and frequently, all

of these requirements are called for.

Regardless of the type of thermo-

plastics your company processes –

polyolefins, technical plastics or high

temperature plastics – we have the

optimal equipment for you.

Benefit from all the advantages

of our consulting service and use

original plasticizing components !

Customer service

Netstal offers you excellent availa-

bility in terms of original plasticizing

components delivered direct from

our warehouse. As such, we achieve

our principal priority by ensuring that

the right part is in the right place at

the right time.

Noone knows your machines better

than Netstal. All original plasticizing

components are tailored and opti-

mised to meet the performance of

Netstal injection moulding machines.

For this reason, it is understandable

that Netstal can only guarantee the

achievement of agreed performance

data if original Netstal plasticizing

components are used.

Similarly, our application technology

consulting and scope of guarantee

can only be provided for our original

parts.

Machines, consulting and spare

parts all from a single source – provid-

ing you with the decisive edge when it

comes to plasticizing !


www.vdma.org/original

Fast, precise, reliable :

The three outstanding features

of a Netstal machine.

Pro Original – for the success

of original technology :

All from a single source –

benefit from this decisive advantage.

Application technology consulting

is a central focus of our support concept.

Netstal quality at the heart

of our product lines.

Targeted product service

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Material selection Material quality

Material friction pairing

Protection against corrosion

Coatings Surface structure

Non-stick feature

Rapid colour changing

A decisive factor when it comes to

first-rate plasticizing performance is

the right choice of plasticizing system.

The comprehensive requirements

encompass the following :

Outstanding plasticizing

performance

Excellent thermal and material

homogeny in terms of the melt

Efficient, but mild melt preparation

without material damage

High level of wear and corrosion

protection for an enhanced

service life

Excellent reproducibility

Highest possible range

of application

Requirements are weighted differently

depending on the respective appli-

cation area. Consequently, the shear

stress rate is the most important factor

when processing PC / ABS blends in

order to achieve the highest possible

impact resistance, such as that required

for thin-walled housings. The manu-

facture of caps and packaging requires

an extremely high standard of plasti-

cizing performance, while high plasti-

cizing performance at a low shear

stress rate forms the focus in the pro-

duction of PET preforms. Complete

homogeny in terms of the melt is, of

course, a prerequisite for all the appli-

cations.

Netstal provides you with the opti-

mum plasticizing system for your

application to consequently meet the

most stringent requirements.

Choice of plasticizing system :

A decisive factor when it comes

to excellent plasticizing performance.

Optimal performance :

The ideal coordination of geometric design,

material selection, optional coatings and

process management.


The plasticizing range for any situation

Plasticizing performance Outstanding plasticizing performance

Quality melt and moulded part

Process reliability/reproducibility

Long service life

Geometrical layout Screws

Cylinders

Back-flow stops

Process management

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Melt channelScrew

Barrier flight CylinderScrew

Solids channel Feed section

Direction of flow

Netstal LP screw :

The high performance screw for

maximum plasticizing performance

and superlative melt quality.

Through its special geometric

design, the LP barrier screw com-

bines first-rate plasticizing per-

formance with mild material

pre paration and optimal mixing –

attributes that are guaranteed

even at high throughput rates.

Used in standard applications

and high speed packaging

appli cations, the LP screw can

achieve superlative polyolefin

throughput performance, with

excellent quality melt homogeny

and exceptional temperature

management.

In addition, a high melting capability

at low pressure within the barriers

enables perfect cap production using

extremely high viscosity HDPE.

Moreover, non-reinforced technical

plastics such as ABS, PBT or POM can

be processed at higher rotational

speeds and with greater homogeny

in comparison to a standard screw.

LP operating principle


performance

Excellent material homogeny

Superb pressure-throughput ratio

Low-wear

Material conserving

melting concept

Benefits for you

LP screw :

The right choice where a high standard

of melt quality and maximal plasticizing

performance is called for.

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PET screw :

Netstal supplies high-performance

plasticizing units for the manufacture

of PET preforms.

Netstal standard screw :

Impressive in the melt preparation

for numerous conventional appli-

cations, the standard screw has

proved itself as a versatile and cost-

efficient solution.

The standard screw really comes

to the fore with a broad range of

materials when implemented for

technical and medical applications

with medium and low rotational

speeds.

A balanced geometry ensures

exceptional temperature manage-

ment and homogeny within a

broad process latitude when

processing materials such as PA,

ABS, PC, PMMA or POM.

Universally deployable for

a broad range of materials

with medium plasticizing

requirements

Exceptional temperature manage-

ment and homogeny for technical

and medical applications.

Excellent reproducibility and

process reliability within a

broad process latitude

Benefits for you

Standard screw :

The right choice for a wide range

of technical plastics.

Netstal PET screws :

To ensure the optimal melt quality,

Netstal supplies special high-per-

formance plasticizing units for PET

processing.

Mild material preparation – not

least thanks to the intrusion principle

patented by Netstal – and an excel-

lent standard of homogeny guarantee

top product quality.

High throughput rates up to

1,500 kg / h and a focus on maxi-

mum energy efficiency provide

for maximum productivity.

Netstal is also an excellent partner

in terms of special applications, such

as hot-fill or recycled flakes, and

is always able to provide the

optimal screw concept.


performance

Mild material preparation

providing minimum AA values

thanks to the intrusion

principle and special screw

geometry

Excellent material homogeny

Energy-efficient plasticizing

The optimal solution

for all PET applications

Benefits for you

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Protection against

wear

Protection against

corrosionScrew Cylinder Application area

+ + Nitriding steeloptional coating

Nitriding steel Non-reinforced plastics, standard packaging applications

+++ ++ Hardened steel

optional coating

Bi-metal plating Reinforced plastics with low or high filling ratio

+++ +++ Powder steel Bi-metal plating Non-reinforced or reinforced technical plastics with corrosive additives

Coordinated plasticizing

components

We supply you with just the right

cylinders, back-flow stops and locking

systems all specifically tailored to our

range of screws and their respective

applications.

Protection against wear

Plasticizing components are subjected

to exceptionally high stress loads.

A variety of additives such as glass

fibre, fillers and colourings call for

targeted measures to avoid adhesive

and abrasive wear.

Netstal›s range of products features

high quality materials that are co-

ordinated to produce favourable

friction conditions and thereby opti-

mally protect the components against

surface wear.

In addition to the appropriate choice

of materials, through intelligent

geometric design Netstal focuses

on ensuring that no unnecessary

stress is exerted on the plasticizing

components.

In barrier screws, for example,

the friction resulting from ring back-

flow stops or melt pressures is

reduced, thereby achieving an ex-

ceptionally long service life even

where great demands are placed

on the plasticizing process.

Protection against corrosion

Above all, the rapid development

of new technical plastics frequently

calls for additional protection of

the plasticizing components against

corrosion. Solution-orientated

materials, coated where necessary,

are also used in this case to largely

prevent the complex processes of

oxygen-related and intercrystaline

corrosion, which also often occurs in

combination with additives.

Coatings

On the one hand, coatings are

applied to improve wear and cor-

rosion protection, but on the other

hand also to optimise the non-stick

attributes and prevent adhesion

to screws and back-flow stops.

Longstanding experience has taught

our engineers which coatings will

have the specific effects required to

optimise plasticizing systems.

As a consequence, the appropriate

coatings can, for example, practi-

cally eliminate optical defects in the

manufacture of lenses and other

transparent products. Adhesion,

pitted and degraded plastic parts as

well as black spots are largely pre-

vented, while colour changing is

accelerated and product quality as-

surance largely secured.

Coatings :

To enhance wear and corrosion

protection or optimise non-stick

characteristics.


Coordinated plasticizing

components :

Your application – our cylinders,

back-flow stops and locking systems.

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For a successful future.

Boasting 60 years of experience, Netstal is one of

the pioneers of injection moulding technology.

Machines and production systems from Netstal

are characterised by their reliability, precision,

speed, user-friendliness and efficiency.

Thanks to our worldwide sales and service

network, we can guarantee a future-oriented

partnership.

Netstal-Maschinen AGCH-8752 Näfels /Switzerland

Phine +41 55 618 6111

Fax +41 55 618 66 04

Internet www.netstal.com

E-mail [email protected]

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plasticizing range

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