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Die Cutting of a Respirator Mask Exhalation Valve

At Ames Rubber Manufacturing, we specialize in working with unique materials, custom sized, and precision cut for use in a wide range of applications. Our goal is to exceed customer expectations with our high volume, precision die cutting capabilities.

In the project highlighted here, a manufacturer of Respirator Safety masks required an exhalation valve which is used in various respirator masks. Utilizing our Preco Series III M high-speed 4 post press, we produced a valve with .015" thickness, .125" ID, and 1.064" OD, along with tolerances as close as + .015". In order to prep the 40 Durometer Protein-Free Polyisoprene material for high speed kiss cutting, the Sheet Rubber & Gasketing was roll-slitted to the customer specifications. The dies were custom made to non-standard sizes, grounded flat and parallel to ensure uniform cutting. Our feed system allowed for +.005" progression accuracy, increasing material yields. Since Polyisoprene is highly resilient, the material has to be relaxed prior to each cut cycle in order to ensure parts are not stretched and deformed. Once manufactured, each valve was inspected using in process sampling per ANSI Z 1.4 standards.

As a result, we have produced 2-3 million valves annually with in-house bagging and packaging to ensure cleanliness and dimensional stability during shipment and storage. We worked with our vendor on inventory control levels; ensuring large volumes of product were handled properly and delivered to specified locations without interruption. To learn more about our work with high volume precision die cutting, please contact us for more information or refer to the table below.

Respirator Mask Exhalation Valve Project Highlights

Project Name

Respirator Mask Exhalation Valve

Project Description

Exhalation Valves for various Respirator Masks.

Primary Capabilities/Processes Applied

Die Cutting – High Speed Kiss Cutting

Secondary Capabilities/Processes Applied

Roll Slitting Sheet Rubber & Gasketing to width prior to Cutting

Equipment Used to Manufacture Part

Preco Series III M High Speed 4 post press with microprocessor controls
Roll Slitter

Overall Part Thickness

0.015 ft

Overall Inside Diameter

0.125 in

Overall Outside Diameter

1.064 in

Tightest Tolerances (±) on all Dimensions

0.015 in

Material Used

40 Durometer Protein free Polyisoprene

Material Finish

Smooth Cellophane Finish

Industry for Use

Respiratory Safety

In Process Testing/Inspection Performed

In Process Sampling per ANSI Z1.4


2-3 Million Annual Usage


Bagged and Boxed to ensure cleanliness

Delivery/Turnaround Time

5 weeks or sooner for 1st delivery

Delivery Location

Southern California and Various Locations in the United States

Standards Met

Customer specified compound and critical tolerances


·  Die Cutting of a Respirator Mask Exhalation Valve-2

·  Die Cutting of a Respirator Mask Exhalation Valve-3

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