My Technical Paper Presentation at ,

Munich Adhesives and Finishing

Symposium

( MKVS ) ,

( 28. – 30. October 2013 ),

at Sheraton Munchen Arabellapark Hotel , in

Munich , Germany.

On

Technical Developments in HM and HMPSA

from the Emerging Market of India

Shrikant Athavale CEO Prathith Consultants PUNE – 411038, Maharashtra , India

This is a Presentation on latest Developments

in HM and HMPSA from Emerging Market in

India.

I am going to discuss about two such

developments .

The developments that , I am going to address

are as follows.

Part One : “ Surgical tape , Water proof , with Hypo

allergic HM PSA ”

Part Two : “A Innovative method of manufacture of

PVC Insulation Tape, using HM PSA “

Let us Discuss about

Part One

now

Surgical Tape ( water proof ) ,

with

Hypo allergic HM PSA

This is a Innovative method of

manufacturing , Surgical tape ,

Water proof , with Hypo allergic

HM PSA , similar to Band Aid .

Advantages

Very light weight Film of Poly Urethane,

in Human Skin of color .

Higher production speeds due to innovative

Coating mc design.

The Product is highly cost efficient,

owing to , Lower material cost

as well as process operating Cost

and

much lower Capital investment .

Machine Design

This is a rear combination of , Water Based and Hot

melt Coating Machine.

The ease of operation of Water Based coating for

Casting a film

With online

Hot melt Adhesive coating

17

Details of Product

Construction

are as follows

PU

N Woven

Adhesive

Magnified View

PS Adhesive , Hot-Melt

Non Woven With a Top coat of

PU for smooth finish as well as

for excellent water repellence

18

The product ( Non woven Coated Surgical tape ) Is Water Proof.

19

The product ( Non woven Coated Surgical tape ) Is Breathable .

The details of the Process:

Coating pass no. 1 :

PU water Borne dispersion ( Compounded ) is coating on ,

Non Woven liner , by Kiss Roll coating method.

The Coat Wt. with help of Air Knife. This also helps to create

porosity in it.

At this stage it is supported by a silicone release liner.

The coated NW then enters the drying zone, to flash out

water , to obtain a uniform , dry film of PU , on NW + Si

liner , laminate .

A dry coat weight of approx. 10 gsm is desired and achieved.

21

Coating Machine

Coating Pass no. 2 :

The coated web then enters the second coating station .

Here the HM PSA is coated on the Non Woven , by 3 Roller

Coating method. The Coating roller is suitably designed for

Pattern coating , in order to maintain the porosity in the NW

fabric . A coat weight of approx. 18 gsm is desired and

achieved.

Now the Adhesive coated Jumbo roll is ready for further

process of , rewinding and slitting into , Rolls of required

length and width.

23

Coating Machine Diagram

24

Further Process :

Rewinding Machine:

25

Rewinding Log rolls of required length ,

from the Jumbo rolls made as above.

ID. 76 mm

1250 mm

Jumbo Roll of 1250 mm width X 500 Mtrs length

ID. 25 mm

1250 mm

Log Roll of 1250 mm width X

10 Mtrs length

26

Slicing / Slitting Machine :

ID. 25 mm

1250 mm

Log Roll of 1250 mm width X

10 Mtrs length

ID. 25mm

25mm

Finish Roll of 25 mm width X

10 Mtrs length

27

Packing Machine :

Shrink Wrapping

Box Sealing

28

Product Cost

29

Conclusion

The Invented Method of Producing

Surgical Tape by using Non Woven with

PU coating on top and , HM PSA is very

useful. It is light weight , breathable and

Water proof.

Now let us discuss about

Part Two

A Innovative method to

manufacturing

Insulation Tape , replacing

PVC Film with Cast film

using HM PSA

Cost Effective Electrical Insulation Tape ,

replacing PVC Film

This is a Innovative method of manufacturing ,

Insulation tape , by replacing PVC Film with

cast film of Radiation Vulcanized Nat rubber

latex (RVNRL) , and specially compounded

water Borne acrylic PSA , without

compromising quality.

Advantages

Very light weight Film , of Sp.Gr. below 1.0

as compared to PVC 1.3 ,

excellent conformability .

Higher production speeds due to innovative

Coating mc design.

The Product is highly cost efficient ,

owing to ,

Lower material cost

as well as

process operating Cost , and

much lesser Capital investment .

Details are as follows

The Product Construction is given

Below.

PU

Carrier

Adhesive

Magnified View

PS Adhesive , either Hot-Melt

Or Compounded Water Borne

, ( Rubber base / Acrylic )

Carrier Film , prepared by cast

method , from compounded

RVNRL

With a Top coat of PU for

smooth finish as well as for

excellent water repellence

Method of Manufacture , The Carrier Film

The carrier Film , or the Backing material , for the

purpose is manufactured by

Coating a RVNRL ( Radiation Vulcanized Natural

Rubber ) compound , made in house.

The Compound recipe is given below.

Preparation of WB Dispersion for the additive :

The Filler , antioxidant, Flame retardants , are initially,

dispersed in water using a suitable dispersing agent and

the pH is adjusted to alkaline , using liq. Ammonia

solution.

The pigment paste is available in water dispersed form.

Preparation of Coating Compound:

RVNRL is now mixed with pigment paste and

dispersion (made as above) , on a slow speed mixer.

The pH of the compound is checked and adjusted to

7-8.

Now the coating is ready for use.

The Coating or Casting is a done on a specially

designed coating machine.

This machine has number of coating stations ,

incorporated , to carry out all the coatings in a single

pass.

The details of the Process:

Coating pass no. 1 :

On the first Coating station , PU water Borne

dispersion ( Compounded ) is coating on , Silicone

Release liner , by Kiss Roll coating method.

The coated Si liner then enters the drying zone, to flash

out the solvent that is water , to obtain a uniform , dry

PU film .

A dry coat weight of approx. 10 gsm is desired and

achieved.

Coating pass no. 2 :

The coated web then enters the second coating station .

Here the RVNRL compound is coated on the same side

as PU coated earlier , by Comma Coating method. Here

also the coated Si liner then enters the Drying zone ,

similar to coating Pass no. 1

A dry coat weight of approx. 35 gsm. is desired and

achieved.

Coating Pass no. 3 :

The coated web then enters the Third coating station .

Here the HM PS Adhesive is coated on the same side as

( PU + RVNRL) coated earlier , by Roller Coating

method.

A coat weight of approx. 25 gsm. is desired and

achieved.

Now in the last phase of this coating operation , the Si

Liner is removed and rewound on separate Rewind

station no. 2 , and the adhesive coated film is rewound on

rewind station no. 1

Now the Adhesive coated Jumbo roll is ready for further

process of , rewinding and slitting into , Rolls of required

length and width.

Coating Machine Diagram

Further Process :

Rewinding Machine:

Rewinding Log rolls of required length , from

the Jumbo rolls made as above.

The Product Cost Analysis :

Conclusion

The Invented Method of Producing

Electrical Insulation Tape by using

RVNRL Film is very Cost Effective.

There is a net saving of at least 19 % ,

which is sizable by any standards.

May

I have your

Questions Please

For more Details Please Contact Shrikant Athavale CEO Prathith Consultants B 801 , Vastushree Pearl, Paud road , Kothrud PUNE – 411038, Maharashtra , India Mobile : Germany : +49 ( India ) 0091 9850242282 / 7588288204 Email : psatechno@gmail.com,ceo@psadhesive.com Website : www.psadhesive.com