Nagase have a polymer filter for high viscosity fluids

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Polymer filter

Leaf Disk Filters

Aupports high viscosity and large flow quantity

The leaf disk filter offers the large filtration area even in a limited capacity ,the high mechanical strength and the good rheological properties.

Superior cleaning characteristics

Nagase provides not only a conventional wire mesh retainer supported leaf disk filter but also our original TP (Twisted Plate) retainer supported leaf disk filter, which can reduce the initial pressure drop, extend the on-stream life and achieve the easy cleaning, in a variety of sizes, hub designs, filtration efficiencies and types of porous metal filter media to meet every requirement.

Product specification / filter size

  4nch 5nch 7nch 8nch φ290mm 12nch
OD 111mm 149mm 177mm 222mm 290mm 304mm
ID A 38.1mm 38.1mm 47.6mm 47.6mm 63.5mm 63.5mm
     B 47.6mm 47.6mm 63.5mm 63.5mm 76.2mm 76.2mm
     C       76.2mm 85.2mm 85.2mm
     D         115.5mm 115.5mm
Specifications of Retainer
：　Wire mesh or TP retainer
Filter Medium
：　Sintered metal fiber, Sintered Metal Powder,
　　Sintering wire mesh
Filtration accuracy
：　1~80μ(include development grade)

Hub Designs

TP soft hub Semi-hard hub TP semi-hard hub Hard hub

About TP retainer

The conventional type of leaf disk filter has a wire mesh retainer , which causes high pressure drop for the filter and this leads to problems as polymer stagnation , polymer degradation and gel creation.
To reduce the pressure drop , the TP retainer has been developed .
The TP retainer has the simple structure , made of one piece of stainless steel plate. And its original structure guides the polymer towards the center pole , so that the polymer flows more easily. This helps not only for low pressure drop , but also for long on-stream life . And This , in turn , helps good clean ability

Characteristic of TP retainer

We show one example of the effect when I used TP retainer.


A low pressure loss / a longer life effect by TP retainer.

  A conventional type
(Wire mesh retainer) 		A lower pressure drop type
(TP retainer)
 
Pressure Drop Wire mesh retainer has the structure that doesn't lead polymer to inner diameter. Therefore polymer stagnation could happen inside and the pressure drop is also higher. The TP retainer has the structure that leads polymer to the inner side. Therefore it enables polymer to flow more smoothly from outside to inside and the pressure drop is lower.
Filtration The effective filtration area is limited because outside area could not be used due to higher pressure of retainer. The effective filtration area is bigger because polymer can easily penetrate into outside area of filter medium due to lower pressure of retainer.
Cleaning It is tough to clean the space of backside of hub ring because it is too complicated structure. It is more easy to clean even space of hub ring because it is very simple structure of hub design and has more open area in it

Candle filter

There are two types of candle filter ; a tube type and a pleated type.
The candle filter offers the low pressure drop , the large filtration area , easy assembly and disassembly and the low capital cost.
We provides both types of candle filter in a variety of sizes , element designs , filtration efficiencies and types of porous metal filter media to satisfy every demand.

Characteristic


* Low capital cost
* Easy assembly and disassembly
* High holding capacity
* Large filtration area

Pack filter

A pack filter is used for screen made of the stainless steel. We can offer various specifications of filter depending on applications and demands of customers.

Filter cleaning service

It is an important factor so that customer keep using our filter for the long time.
We can supply the customer cleaning service including inspection and assembling based on our original know-how.

Cleaning process

Inspection item

Bubble point inspection
Bubble point inspection is the one of checking filter accuracy.
Air flow inspection
Air flow inspection is the one of checking pressure drop of filter.
LPM inspection
LPM inspection is the one of checking also pressure drop of filter.

Available resin for cleaning

Please contact us.

Premium cleaning service

We can offer the option cleaning process if customer has the request of checking and reducing the contamination after cleaning.

Plumbing cleaning

We clean the plumbing ,the case and T-die.

Test machine to evaluate Leaf disc filter(DENALYZER)

We have a test facility of evaluating polymer filter at Nagase Application Workshop which is development center in Nagase group.
This facility can be operated in a clean booth and also has a detection machine so that you can check easily the quality of the film passed through the polymer filter.
The other features is easy to manage the test date because control boxes of the filter and the detection machine are digitalized.

Facilities

(1)Monaxon extruder

Screw
: Φ40mm
L / D
: 30
▼

(2)Leaf Disk Filters/DENAFILTER

System
: 5inch * 5pcs
Sensor
: Pressure data, heater data
▼

(3-1)Clean room

The cleanliness degree
: Class1000

(3-2)Rewind machine

Gap of T-die
: 0.1~1.0mm
Cooling Roll
: Temperature ~200℃
▼

(4)Detection machine/Web sensor

Resolution
: min 35μ

The comparison data of the quantity of alien substance by the difference of the filter.

【Condition】

■Extruder(DENALYZER)
：Φ40mm
■Alien substance analyzer
　(Web sensor)
：Specula transmission / resolving power 25 μ
■Resin
：PP.
■Film thickness
：0 μ
■Film speed
：5m/min.

【Measurement result.】

  The number of the alien substance counts.
S（50〜150μ） M（150〜300μ） L（300μ〜）
Screen pack filter
(#400 wire netting media).		 123 52 11
A leaf disk filter
(40 μ nonwoven fabric media).		 64 13 2
A leaf disk filter
(20 μ nonwoven fabric media).		 6 2 0
This measurement result is not a thing guaranteeing the performance of the filter.

Filter rental airplane DENALAB

We can offer the test equipment for rental

Rental　Contents
Case,
Filter Element,
Heater,
Thermo controller,
Pressure meter

Please contact us.
We have several grade of rental equipment such as 5 inches .7 inch .8 inch .12 inch.