New Raw Material Supplier Approved

New Raw Material Supplier Approved

Dear Customers, Over the past few months we have been evaluating a second source for the polyester film we use in our heat shrink tapes. We have found this second source’s product to meet or exceed our requirements and match very closely to our current/primary supplier. We intend to approve this secondary supplier and source only about 20% of our total demand from them…

Dunstone Manufactures Disposable Test Tube Liners...

Dunstone Manufactures Disposable Test Tube Liners...

The disposable FEP test tube liners were designed to reduce test tube cleaning time and increase throughput in high volume labs. You simply place a liner inside your test tube, add your sample and process as usual. Once you are done processing your sample, you can remove the liner and discard.…

Dunstone COVID-19 Response

Dunstone COVID-19 Response

In order to slow the propagation of the disease (assure our medical institutions are not overwhelmed), we are asking all our employees to do their part in practicing good medical hygiene including not coming to work if you show any signs of illness. All non-essential business travel should be delayed until after April 3rd.…

Heat Shrink FEP Tubing for the Composites Industry

Heat Shrink FEP Tubing for the Composites Industry

Our thin wall Hi-Shrink FEP, used over an inflatable rubber bladder or hard/soft mandrel (up to 12" diameter) provides excellent release. In addition, it reduces the occurrence of foreign object debris (FOD) and allows our customers to manufacture large numbers of parts quickly and effectively.…

SAMPE Carolinas Material EXPO 2019

SAMPE Carolinas Material EXPO 2019

As a SAMPE member for the last 30+ years, Dunstone will be attending and exhibiting at the materials expo with our newest development, large diameter Hi-Shrink FEP shrink tubing.…

Dunstone Moves into Larger Facility

Dunstone Moves into Larger Facility

Since 1958, Dunstone has pushed innovation and potential both internally and with our customers. Our facility of the last 29 years was getting cramped and with little room for new equipment, we acquired a new 15,000 square foot facility and moved in the first week of July and have been running smoothly since.…

A Year of Growth in Composites

2017 Recorded a Year of Growth for the Composites Industry and Dunstone Took Notice. We look forward to 2018, poised for adaptation, as new technologies emerge, demand increases and new products are developed.…

Sporting Goods Market Segment Case Study

Sporting Goods Market Segment Case Study

During product evaluation, Dunstone was able to demonstrate that the high tensile strength of TX-125 Compaction Tape allows for a higher taping tension and gives additional consolidation force to the shafts during cure. This results in better mechanical stiffness of the shaft, and in increase in the percentage of higher grade (straighter) shafts from each batch.…

Composite Utility Poles

Use of 2” wide Hi-Shrink 210S tape allows the customer achieve a good surface finish without having to sand or gel coat the outer surface of the poles. The 210S tape is spiral wound on the part prior to the oven cure. The part is not rotated during the cure cycle, so the Hi-Shrink Tape helps prevent resin pooling on the bottom of the part.…

Case Study – Aerospace Composite Fuselage Stringe

Case Study – Aerospace Composite Fuselage Stringe

Dunstone Hi-Shrink FEP Tubing used in the bladder preparation process allows the customer to prepare more parts in less time in order to incorporate them into the larger fuselage section prior to autoclave cycle. Our FEP tubing shrinks quickly, and without wrinkles, requiring less heat to fully shrink when compared to other heat shrink release film tubes. Dunstone Hi-Shrink FEP Tubing has uniform thickness which give it uniform shrink percentage throughout.…

Sacrifice Film on High Voltage Coils

Sacrifice Film on High Voltage Coils

The OEM was able to use Dunstone’s F-Series Tape 210F as the first layer of release film instead of the film currently used. Hi-Shrink Tape 210F is a polyester based shrink film, with 10% shrink, which has a fused coating of Tedlar® on one side for release. The product provides the high temperature release characteristics of Tedlar®, combined with the high shrink force of polyester film at an overall lower cost.…

Aircraft ECS Ductwork

Aircraft ECS Ductwork

Replacing the cellophane with Dunstone 220R allowed the operators to continue wrapping the film in the same manner, with lower tension during tape wrapping. The shrink characteristics of the 220R enabled the tape to shrink and apply its max shrink force at the same time the resin viscosity is dropping, enabling the tape to minimize resin voids between the plys and reduce prepreg wrinkling.…

Aerospace Thermal Insulation Covers

Aerospace Thermal Insulation Covers

The customer was able to reduce the wrapping step down to one operation, as they were able to achieve sufficient part compaction using only one layer of our film vs two layers (cellophane & PVA) previously. Because the PTFE release coated tape removes cleanly from the part post-cure, the Dunstone Hi-Shrink Tape allowed the customer to completely eliminate the 24 hour long H20 soak for all parts, which increased throughput in that work cell. The bottom line savings realized by the customer amounted to $150,000/year.…