melt filter /screen changer for plastic extrusion machine

1)CE certification, ISO 9001:2000, Production Assessment, Gold Supplier certificated
2) Monthly Production Capacity -- 100 Sets
3)-All goods examined before delivery
4)- Initiator of new screen changer in China, with 20-plus years of R & D and Production experience,
5)- More than 20 international invention patents and national invention patents.
6) -Prompt Reply within 12 Hours
7) -10000 square meters work environment
8)-Chinaplas, K Exhibition, etc international Exhibition yearly

Foam
In foam sheet manufacturing – due to special production conditions – the filtration system, besides guaranteeing a reliable removal of solid and soft particles, must fulfill many additional requirements. Permanent pressure-consistency is very important to create a uniform and homogeneous cell structure and to avoid melt expansion during screen changes.

With rich experience in melt filtration system, DEAO New Single-plate Continuous Screen Changer with 2 working Positions is suitable to foam production line. The advantage is as follows;

•      Steady incremental rate of screen travel eliminates head pressure and melt pressure fluctuations due to screen clogging. As a result, the gauge is maintained within very close tolerances.
•      Formation of die lines is eliminated.
•     DEAO screen changers will not leak polymer , even over many years of continuous operation.

Blow Film
In blown film manufacturing, besides the reliable removal of solid and soft particles in the melt, process-constant production even during screen changes or during the use of reclaim is particularly important. Moreover, the filtration system must exclude the possibility of leakage.

When the bubble is lost in a blown film line due to a screen pack change on a conventional screen changer, a considerable amount of time and material is lost. The screen moves imperceptibly slowly and continuously so as not to disturb the polymer flow, and the continuous motion of the screen automatically adjusts to correspond to the rate at which the screen is clogging.

SHEET & FILM: NO PROCESS DISRUPTIONS
In sheet manufacture, in addition to the removal of solid in homogeneities, filtration must ensure permanent process and product consistency. Also, material costs can be reduced by using recycled material.

For the production of film, a reliable removal of solid and gel-like particles and a fully-automatic filtration system, which operates pressure-constantly and without process interruptions, is very important. To avoid thermal damage or degraded material, the dwell time of the melt as well as the dirt cake in the filtration system must be kept very short.

For this, DEAO offer tailor-made solutions and make cost reductions and top qualities possible.

PIPE & PROFILE: CONSISTENT WALL THICKNESS
With of the elimination of melt temperature and melt pressure variations caused by clogged screens, process parameters are kept within extremely tight tolerances. As a result, consistent wall thickness is maintained throughout months of non-stop operation.

FILAMENT & FIBERS
In the manufacturing of fiber/filament a high process consistency regarding pressure and temperature is an essential prerequisite for an efficient production. Minimization of the melt dwell time in the filtration system is very important. High throughput rates make a fully-automatic mode of operation of the filtration system without any influence on the process necessary.

When processing low denier fibers/filaments, or very narrow diameter monofilaments, maintaining gauge accuracy is critical. In a DEAO screen changer; this is achieved via the precisely controlled, incremental rate of screen advancement. The extruder head pressure and melt flow rates remain uniform during long, uninterrupted production runs.

Nonwovens
In nonwovens manufacture it is necessary to achieve a uniform spinning quality across all spin packs. Therefore, any in homogeneities must be removed before they enter the spinning beam. Moreover, process consistency regarding pressure and temperature is the basic prerequisite for an efficient production. DEAO Double-piston continuous screen changer is widely used on spun bond and melt-blown nonwovens production lines.