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Tuesday, August 31, 2010

New Product Information & PFA Sale

The Intech Insider e-newsletter has been brought to you from the team at Intech Services.  We hope that you will find the content to be informative and insightful.

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 New Product from DuPont - 958-406

958-406 is a PTFE low-bake, solvent-based one coat, which was designed for easy and flexible application combined with a balance of  excellent properties. It offers excellent adhesion, a low friction surface and good corrosion resistance while providing a hard and wear resistant coating for general industrial use. 

958-406 is called "low bake" because it has a bake time of 30 min at 356* F providing full adhesion and excellent performance.  The low-bake capability may allow this product to  be used on substrates such as some plastics and thin gauge metals that cannot typically be coated with high temperature curing coatings.

The material can be applied at a thickness up to 40-50μm per coat, but can be applied thinner if needed, by means of dilution. The material can also be applied in 2 coats to reach a final thickness of ~ 80μm. 

Adhesion on steel and aluminum has been tested by Cross Hatch (ASTM D-3359-92A) and found to be perfect. It was also tested after a Pressure Cooker Test where the cross hatched panel was exposed to a steam at 302° F for 50 hours, and had excellent adhesion. 

Corrosion resistance was tested in Soaking Test under severe conditions of 10% NaCl at 176° F for 100 hours. No blisters, creep, or adhesion loss were observed even when applied on smooth, cold rolled steel. 

Wear resistance was measured by Thrust Abrasion Tester.  The coating reached a typical PV ratio of 18,500 kgf/cm2*cm/s when tested under a speed of 1000mm/sec. The weight loss measured on the Taber Abrasion Tester was 0.0305 g with wheel CS17 loaded with 1000gr and after 1000 cycles. 


Qualitative Comparison to 958-303

Product     Maximum DFT     Lowest Cure Temp    Optimal Cure  Temp        Salt  Spray       
Wear Resistance
958-303             25 µm                  482° F                   662° F                          ++                       ++
953-406             80 µm                  356° F                   356° F                         +++                     +++
 


Contact Intech Services for more detailed information on this new product. 

 532-7100 PFA Sale!!!

Through September 30, 2007, or while supplies last, we are offering 532-7100 White PFA Topcoat for a special price of $1,125 per 10 KG pail.  This represents a savings of over 20%! 

As background, 532-7100 is a white analog of 532-5010 PFA.  It can achieve film builds up to 10 mils.  We recommend using this product with 420-703 black primer. 

The product is a great choice for food processing, pharmaceutical, and other applications that require the outstanding performance of PFA.  The white color makes it a great choice for clean room equipment.  

The DuPont Fact Sheet and MSDS are available to registered users in the "My Company Documents" section of the Intech website.  
Click Here to login to your Customer Portal.  To create a new Customer Portal, simply complete the registration form.

Contact us today to take advantage of this great offer. 

 

INTECH Services
The Sole US & Canadian Distributor for DuPont Teflon* Finishes

CoaterONE e-marketplace
Online Purchasing & Information Resource for the Coating Industry

7 McMillan Way #101   Newark, DE  19713        Office (302) 366-8530

 


Technical Tip from Intech

The Intech Insider e-newsletter has been brought to you from the team at Intech Services.  We hope that you will find the content to be informative and insightful.

Printer friendly editions of past editions of the Intech Insider are available in the "Intech Insider Archive" in the private Customer Center.
 
 
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 Edge Pull / Shrinkage Overview

A common issue that many coaters encounter is edge pull or shrinkage of the coating material from a parts corners or sharp edges.  With the assistance of the DuPont R&D team and several other sources, we reviewed this phenomenon and compiled the following information to help coaters understand and control the variables that contribute to edge pull.

Overall, edge pull is a function of many factors:
     • Type of metal
     • Thickness of metal
     • Radius of the corner or edge
     • Thickness of fluoropolymer
     • Type of fluoropolymer

In many situations, the underlying cause of edge pull is the cooling difference between the metal and coating material.    During the curing and cooling process, fluoropolymers can potentially shrink ten times more than the metal surface.  This difference in shrinkage can cause the coating to pull away from corners and outer edges where there is more stress on the coating material from the shrinkage.  

Shrinkage, or edge pull, is much more pronounced in thick film coatings (25-40 mils) due to the increased coating stress.  For coatings 10-25 mils thick, edge pull can be seen, but is usually not a major factor.  For coatings under 10 mils, edge pull is minimal.  The photo below illustrates severe edge pull on a thick film coating of DuPont Ruby Red PFA.

 
 
 
The type or molecular weight of fluoropolymer does not seem to significantly affect edge pull, although ETFE seems to show less edge pull than PFA.  Because FEP and PTFE are typically very thin film coatings, they typically do not exhibit signs of shrinkage.   

Also, surface preparation does not seem to have any affect on minimizing edge pull.

Edge pull problems can be minimized by adopting procedures which address one or both of the following areas:
 
     1) Cooling rate of the part– A slow cooling rate between the final bake temperature and the melt-flow temperature of the fluoropolymer.  For example, if a final bake is 750F and the melt-flow temperature of the fluoropolymer is 585F, then the cooling rate should be slow from 750F down to 585F.  Once below 585F, edge pull is less likely to occur.

     2) Radius of the edge or corner - Thin film coatings can take a smaller radius (sharper edge) than thick film coatings.  High build coatings, 25-40 mils, should have corners that are properly prepared in order to increase the likelihood of a successful coating.  Concave corners should have smooth radii that blend into the sides of the corners.  It is recommended that 3/8” - 1/2” radius welds be used for the best performance. Convex corners should be rounded over to 1/4” - 3/8”radius or the thickness of the metal, whichever is less. 
The drawing below is a simplified version of good preparation and poor preparation.
 

 

 

INTECH Services
The Sole US & Canadian Distributor for DuPont Teflon* Finishes

CoaterONE e-marketplace
Online Purchasing & Information Resource for the Coating Industry

7 McMillan Way #101   Newark, DE  19713        Office (302) 366-8530

 


Monday, August 30, 2010

Summer Protection Products from Intech

The Intech Insider e-newsletter has been sent to you from the team at Intech Services.  We hope that you will find the content to be informative and insightful.

Printer friendly editions of past editions of the Intech Insider are available in the "Intech Insider Archive" in the private Customer Center.
 
 
Please add
sales@intechservices.com to your address book to ensure consistent delivery of the Intech Insider.  
   

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 Summer Protection for Employees

We all know that one of the critical ingredients to our employee’s consistent use of proper safety protection equipment is supplying equipment that is as comfortable and usable as possible.  Consistent use is sorely tested in the hot months of the year when you would be uncomfortable just working in a Tee Shirt and shorts, but in the industrial coater’s environment you still need protective clothing as well as respiratory and eye protection.   
Intech Services has assembled a list of products that has been field tested for maximum comfort in the harshest of industrial coating environments resulting in the best chance for your employees to use safety equipment properly and consistently.


3MTM 7000 Series Respirators
3M 7000 Series Half Face Mask Respirators were designed with the wearer in mind. This respirator is made from a durable silicone and features a soft sealing surface that enhances wearer comfort and face fit.  A key feature is the new 3M Cool Flow Exhalation Valve which is designed to make breathing easier and at the same time help reduce heat and moisture buildup within the face piece.
The 7000 Series Respirator can be used with any 3M Series 2000, 6000  and combination Filter and Cartridge; All available on CoaterONE.


 
3MTM Particulate Respirator 8211 P95
This respirator offers all the proven features of 3M Particulate Respirator 8511, plus a comfortable foam face seal.
The 8211 is uniquely designed to help provide protection from certain non-oil based particles and is ideally suited for work settings that involve heat, humidity, and require long periods of wear.







DuPont Tyvek® Coveralls

Tyvek® coveralls are an excellent choice for breathable coverall protection.  Tyvek® lets air and moisture vapor pass through the coverall, helping the material stay light and dry and is a key factor in reducing heat stress (see image below). 
Tyvek® is six times more breathable than microporous film garment materials.

 

 
 Did You Know?

DuPont Sontara® Wipes are engineered to be industrial strength wiping tools. That’s why they’re so widely used in key industries like foodservice, aviation, and automotive refinish—plus a variety of maintenance and manufacturing applications. DuPont’s unique hydroentangling technology ensures that they’re ultra-strong, highly absorbent, low-linting and solvent-resistant.

INTECH Services
The Sole US & Canadian Distributor for DuPont Teflon* Finishes

CoaterONE e-marketplace
Online Purchasing & Information Resource for the Coating Industry

7 McMillan Way #101   Newark, DE  19713        Office (302) 366-8530

 

Masking Products

The Intech Insider e-newsletter has brought sent to you from   the team at Intech Services.  We hope that you will find the content to be informative and insightful.

Printer friendly editions of past editions of the Intech Insider are available in the "Intech Insider Archive" in the private Customer Center.
 
 
Please add
sales@intechservices.com to your address book to ensure consistent delivery of the Intech Insider.  
   

Quick Links

Intech Services Homepage

Customer Center Sign-In

New Account Registration

Coater Cash Rewards Program

 Masking Product Selection Guide

Specialty tapes and discs offer an inexpensive way to mask many common finishing surfaces. Our extensive experience with many different tape applications means we can find the right balance of adhesion, flexibility, and release value to best meet the needs of your specific work requirement. And our masking tapes and disks all come with the same value pricing, service and reliability you’ve come to expect from Intech

 

 

 

Glass Cloth

Kapton

Red Polyester

Green Polyester

Blue Polyester

Hi Temp Crepe

Aluminum Foil

Blue Vinyl

Thickness

5.0 mils

1.0 mils

1.0 mils

2.0 mils

1.0 mils

7.5 mils

3.0 mils

5.0 mils

Max Use Temp

500 F

500 F

425 F

400 F

400 F

300 F

300 F

300 F

Adhesive

Silicone

Silicone

Silicone

Silicone

Silicone

Silicone

Silicone

Silicone

 

 

 

 

 

 

 

 

 

Small Surfaces

Excellent

Good

Excellent

Excellent

Good

Good

Good

Good

Large Surfaces

Excellent

Poor

Good

Excellent

Poor

Good

Good

Poor

Curved Surfaces

Good

Good

Excellent

Poor

Excellent

Good

Good

Good

Thin Coatings

Excellent

Good

Good

Good

Good

Good

Good

Good

Thick Coatings

Excellent

Poor

Poor

Good

Poor

Poor

Good

Good

Wednesday, August 25, 2010

Teflon* Primer Selection Guide

DuPont Primer Selection Guide

There are a number of excellent primers designed to provide substrate and intercoat adhesion for Teflon* topcoats. The water and solvent based products allow for processing flexibility for you specific project.

It is important to remember that a FDA conforming primer must be used in conjunction with FDA conforming topcoats to have a complete FDA conforming coating system.
                                             

PRODUCT
COLOR
FDA**
CARRIER
TOPCOAT COMPATABILITY
PTFE
PFA
FEP
ETFE
420-703
Black
Yes
Solvent
x
x
459N-11100
Black
Yes
Water
x
x
x
459N-21100
Blue
Yes
Water
x
x
x
459N-41105
Black
Yes
Water
x
x
x
699-123
Black
Yes
Water
x
850-300*
Clear
No
Water / Acid
x
x
x
850-314*
Green
No
Water / Acid
x
x
x
850-321*
Gray
No
Water / Acid
x
x
x
851-204
Green
No
Water / Acid
x
x
x
858-100
Black
Yes
Water
x
x
958-203
Black
No
Solvent
x
x
958-207
Green
No
Solvent
x
x
959-203
Black
Yes
Solvent
x
x
959-205
Brown
Yes
Solvent
x
x
* Mix with 850-7799
** Complies with FDA regulations in 21 CFR. See specific product Fact Sheets or contact Intech for additional information.