AB parts PU epoxy bonding dispensing potting dosing machine for filtration

Where to buy PU , epoxy bonding machine for filtration ?

Filter products gluing requirements :
Adhesives for using in filter manufacturing and the following are descriptions of four physical properties which are the most important factors that should be considered Hardness, viscosity, pot life and percentage of solids.

Using adhesives to fabricate numerous filter components to assemble the filter media itself, bond the filter media into a frame or end cap or install the gasket need .

Pot requirement of the filtration proudcts:

Two-component adhesives, such as epoxies and some polyurethanes, must be mixed at the plant. Pot life (or liquid life) is an indication of how long these two-part adhesives remain usable once mixed. Both quantity and temperature of the adhesive mixture influence pot life. For example, a quantity of adhesive in a cup will build up heat and cure more quickly - and therefore have a shorter pot life - than the same amount spread into a thin film.Increasing the temperature of the mixture will also shorten pot life.

Two component metering mixing and potting machine can very well to solve this problem.
The amount of glue can be mixed according to the requirements at will, which can be freely set on the equipment. The glue can be mixed while producing the product, without wasting the adhesive, and the bonding requirements can be efficiently achieved.
The equipment contains a heating function, and the required temperature can be set to achieve the bonding requirements for the product easily.

Common types of adhesives

1)Thermosetting adhesives

Thermosetting adhesives typically cure through the chemical reaction of two components or exposure to heat. Once cured, the adhesive becomes inert. These adhesives tend to have good heat and chemical resistance and are well suited to applications that require strength under varied conditions. Two common thermosets are epoxy resins and polyurethanes.

2)Epoxy resins
One- and two-part epoxy resins are widely used in filter fabrication for a variety of applications. Most are very rigid in the
cured state and adhere well to metal. Although they offer high temperature and chemical resistance, epoxy resins can be relatively
costly and often cure slowly.

3)Polyurethanes
Adhesive manufacturers offer a broad array of polyurethane adhesives, in varying colours, cure rates, viscosities and hardness levels. Although available in one-part formulations, two-part polyurethanes are better suited to filter applications. Whereas one-part formulations rely on moisture in the substrates and air to cure, two-part polyurethanes cure through a reaction when the two components are combined. Most two-part polyurethanes cure at room temperature but can be heat accelerated. Harder polyurethanes can be used to assemble the filter media into a metal or plastic frame or end cap or cast as those components. Softer versions can serve as a seal between a filter and its housing, eliminating the need for a separate gasket. Polyurethanes lack resistance to some chemicals and solvents so are best used with water, air and oil filters.
 

Equipment recommended :Applying adhesives for industrial uses is not always as easy as picking up a bottle of glue and squeezing. Two-part adhesives require mixing, and many adhesives used in filter fabrication require separate dispensers.
No matter what resin you are going to use , our company have the indispensable metering mixing dispensing equipment for the applications .
The following  mixing and dispensing two-part adhesives.

Simple mixing machine ,Semi-automatic mixing machine

PJL Serious machine example : PJL-800,PJL-1200 ,JYPJ-1000, PJL-1500

The easiest method is to carefully measure the two components by weight or volume to mix
exactly the amount needed ,then operate hold the dispensing gun to apply mixture into proudcts' position where require bonding and potting .

ITEM	Parameter
Mixing ratio	1:1--10:1 adjustable
Working range	Can be Customized
Out-glue speed	1-12g/s per single pump ; the output volume is decided by mixing ratio
Accuracy	±2%(output volume)±2%(mixing)
tolerance	≤0.2mm
Flow control	Digital input
Program memory	20pcs
Automatic controlling system	Touch screen (to achieve program programming, modification, storage and so on
Out-glue control system	AB glue back suction valve, achieve AB glue independent operation
Mixing method	dynamic mixing
Power supply	220V/50Hz/1500W without heating
Air source	0.5-0.8Mpa
Viscosity range	50-20000cps
A tank	10L 25L 40L stainless tank(optional)
B tank	10L 25L 40L stainless tank(optional)
Others	AB tank ,A pump,AB pipeline heating function

 

Meter mix systems with XYY movable system (Automatic gluing dispensing machine )

PGB serious such like PGB-700 ,PGB-1200,PGB-1500,PGB-2250....

This equipment is designed to mix and dispense adhesives accurately and apply resin to filter accurately by 3-axis dispensing robot.
Some machines dispense only one mix ratio, while our machine can cover a range of ratios.
The filter manufacturer can quickly recoups the investment through using our equipment , since the high productivity can savings the cost for bulk production.

ITEM	Parameter
Mixing ratio	1:1--10:1 adjustable
Working range	Can be customized
Displacement speed	250mm/s(speed)
Out-glue speed	1-12g/s per single pump
Accuracy	±2%(output volume)±2%(mixing)
tolerance	≤0.2mm
Flow control	Digital input
Program memory	99pcs-999pcs
Motion trail	Dot , line ,curve ,circle
Automatic controlling system	Touch screen (to achieve program programming, modification, storage and so on
Out-glue control system	AB glue back suction valve, achieve AB glue independent operation
Programmatically	Tech programming/or computer systems (Micro software Windows 7,Windows10 optional)
Mixing method	dynamic mixing
Power supply	220V/50Hz/1500W without heating
Air source	0.5-0.8Mpa
Viscosity range	50-20000cps
Outer dimension	1500L*1200W*1600H mm
A tank	10L 25L 40L stainless tank(optional)
B tank	10L 25L 40L stainless tank(optional)
Others	AB tank ,A pump,AB pipeline heating function

Common troubles and solutions

• 1.Glue dispenser always drops

  Drops always happened when valve closed . The reason may be low concentration of glue , big air-pressure or large diameter of needles.

  Narrow needles will effect the flow of the liquid and cause back pressure . It will lead to dropping when the valve closed . Too narrow needles will effect the drainage of air when valve start to work, but it can be solved if change suitable needles .

  Conical needles with less back pressure and liquid flow smoothly .

  It is better to drainage of the air advance or use no-foam glue or deaeration to avoid the air cause dropping after valve closed .

• 2.Glue dispensing not evenly

  The problem cause mainly because of the storage flow pressure tank or air pressure is not stable.

  Inlet pressure regulating table should be set lower 10-15psi than factory minimum pressure . The pressure in pressure tank should be set upper than the middle pressure of regulating table . It should be avoided to use the pressure lower than the middle pressure of regulating table .

  Control pressure of rubber valve at least higher than 60psi to assured glue evenly .

  We should check the glue output speed at last . The glue is uneven if the time less than 15/1000s , the output speed more longer , the glue dispensing will be more stable .

• 3.Slow flow velocity

  It should be changed the pipe from 1/4 to 3/8 if the flow velocity too slowly .

  The pipe is the shorter the better if no requirement .

• 4.Air in the fluid

  Excessive fluid pressure and short valve opening time may lead to the air infiltration liquid . We can use the conical needles and reduce fluid pressure .

• 5. Instant glue (quick adhesive) blocking in valve connector and pipes.

  This problem is caused by heavy moisture and recycle instant glue . We should make sure to use new instant glue and wash the pipes with dry . Make sure air dry and add filter between plant air pressure and valve .

• 6.UV glue (UV curing glue )

  Make sure to use black pipeline.

  Don't add new UV glue to old UV glue in pressure tank , we should drain off the old UV glue before pouring new UV glue into pressure tank because the UV glue will produce bubble after a period of time and lead to glue dispensing unevenly .

• 7.Needles

  Normally , it may cause air problem if the needle less than NO.20 . It is better to use large steel needles or conical needles to avoid to use winding needles

• 8. Epoxy cleaning

  It is better to use storage pressure cylinder of methybenzene toluene to self-cleaning one time for each shift . The more frequently cleaning the better .