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 VKRT Meetings

08-12-2016: December meeting VKRT: Rubber verwerking  

Buitenplaats Amerongen Drostestraat 12

3958 BK Amerongen


Seminar schedule

Time
12.30

Author(s)
Ontvangst en registratie

Subject

Time
13.00

Author(s)
Opening door voorzitter VKRT

Subject

Time
13.10

Author(s)
Stefano Bortoli

Subject
Accurate chemical weighing system

Accurate chemical weighing system   

Color Service has designed an innovative and reliable system that guarantees 24 hours per day repeatability, traceability and accuracy of the dosing process for chemicals: this allows to achieve the required properties of the many end products. The main characteristic of the system is the contemporary dispensing of all the products at the same time by an high performance device called TDE, that allows to achieve an unbelievable production of 2 bags per minutes, run24/7 with accuracy and repeatability.

 

TDE is a vertical stainless steel silo (150 Lts. Capacity), combined with others types of storage system, having various capacity and loading modalities (vacuum, Big Bag, gravity) based on products consumption and based on raw materials feeding form. TDE has a circular bottom closed by a pneumatic guillotine managed by an analogical transducer. The Raw materials weighing take place inside the container in which is insert automatically the EVA bag, placed above the loading cell. The opening of the dosing head is proportional, based on the quantity missing to reach the required weight and directly related to real time weight recorded by the scale. The advantage of this automation is the possibility to allow the whole opening of the dosing head in order to increase the capacity of dispensing, reducing the time, but at the same time reaching high accuracy.

 

Installation of a circular fixed antistatic brush  and  collecting paddle permit to keep the system clean in automatic and avoid any accidental falling of product. The internal installation of a mechanical bridge breaker automatically drived help the flow of material and makes the TDE unique and suitable for any kind of product structure ( powder, granular, flakes, wax) and quantity.

Time
13.45

Author(s)
Henk de Bruijn

Subject
The production of large tunnel seals at Trelleborg Ridderkerk.

The production of large tunnel seals at Trelleborg Ridderkerk.   

Large rubber seals are needed for megastructures such as immersed tunnels all over the world. Trelleborg Ridderkerk B.V. has designed and produced large rubber seals for the 6 km long immersed tunnel, which is part of the Hong Kong-Zuhai-Macau fixed link in the Pearl River Delta.

This project has special requirements for product performance, physical properties, durability, lead time, product- tests and packing. The combination of dimensions and requirements causes some challenges in the area of product design, compounding, processing, manufacturing, testing and logistics.

Several different natural rubber compounds and processing methods are used for the assembly of the sections of one rubber seal. Because of the large dimensions, some of the most interesting production parameters are curing time and curing temperature.

Time
14.15

Author(s)
Pauze

Subject

Time
14.45

Author(s)
Dr. Eng. Cesare G. Viganò

Subject
G3 Srl, Italy: a small company presenting big breakthrough in mixing room equipment

G3 Srl, Italy: a small company presenting big breakthrough in mixing room equipment   

G3 Srl is a company located in Italy that, as a unique example in mixing room equipment suppliers, has two different product lines: seriously rebuilt machines and brand new machines. The history of G3 is a solid base for efficiently and effectively covering both products line in a way that G3’s Customers are from small-medium size companies to Worldwide groups and Tire manufacturers. The ethical approach in seriously rebuilding any machine from a simple bale cutter to a complete mixing lines applies to capital equipment (normally becoming rusty and dusty after having been taken out of production) those more and more important concepts like REUSE, REDUCE and RECYCLE normally applied to much less significant topics than industrial machinery. The fruitful cross fertilization arising from having both product lines within the same company brings very interesting advantages to end users. One of these is surely the totally new design of hydraulic hopper/ram group which allows innovation to be combined with reliability and durability especially when dealing with very demanding applications. Since the importance of Automation Control System in a mixing room, like in any other Industrial environment, is consistently increasing, G3 is the worldwide representative for the only breakthrough in this domain: the only system which in real time controls and changes mixing parameters for the best results in terms of quality, time/energy savings, productivity, batch to batch uniformity, only to mention some of the aspects covered during the presentation.

Time
15.20

Author(s)
Dr. Simon Wachter

Subject
Continuous mixing in single screw extruder gear pump systems

Continuous mixing in single screw extruder gear pump systems   

The presentation will show developments for continuous mixing in single screw extruder gear pump
combinations supplied by VMI to several industrial customers.
Two possible basic setups allow to build a machine able to adopt to the customers process needs. The
first setting is using a single screw extruder gear pump system with additional feeding by a loss in in
weight feeder via the main hopper.
A second alternative is to side feed compound with an extruder gear pump system into the master batch
of the main machine. Both possibilities are used in different applications which are shown in the
presentation.
Different ways to judge the quality of the mixing and allowing to set parameters in the right way are
used depending on the process setup and needs.

Time
15.55

Author(s)
Jaap Havinga

Subject
NEN-commissie 342045 Rubber

Time
16.45

Author(s)
Rondleiding buitenplaats Amerongen

Subject

Time
18.00

Author(s)
Borrel en diner

Subject


 Seminar schedule