Goodyear Purchases Poly Seal Industries

Bay Area Technical Rubber Goods Company snapped up by not so ‘Little’ Goodyear. Goodyear Rubber Co of So Ca is proud to announce the purchase of Berkeley California’s Poly Seal Industries from Dan Baker. Poly Seal had been manufacturing high quality rubber molded products for various industries since 1974. The purchase is effective January 1, … Continued

Rubber Molding: Compression Molding

Hi everyone, I get a lot of lot of molding requests from perspective customers. These prospects are almost never experts in rubber molding. Sometimes they will have had a plastic part molded in the past so the request often comes as something like this: ‘Do you do that injection molding?’. We do have injection molding … Continued

Rubber Bonding: adhesive Selector

Below is a list of single coat adhesive selectors for different polymer types: [wpdatatable id=4] I will write a subsequent blog making a more comprehensive list including 2 coat systems. Hope it helps.


Goodyear Receives ITAR Registration Good-West Rubber Corp DBA Goodyear Rubber Co of So Ca received the approval letter from The Office of Defense Trade Controls Compliance, Compliance and Registration Division that stated Goodyear is now ITAR Registered. International Traffic in Arms Regulations (ITAR) is a set of United States government regulations that control the export … Continued

Goodyear Rubber, Rubber Roofing Materials

Economical Rubber Mixing and Compounding

Goodyear Rubber knows the value of EPDM (ethylene propylene diene terpolymer) as a durable synthetic rubber used in a variety of application needed strong heat resistance and excellent weathering properties. That’s one reason it is used for roofing. Its two primary ingredients, ethylene and propylene, come from oil and natural gas. Factors that impact economics … Continued

Manufacturing Concerns about Additives

As you might suspect, there are manufacturing concerns and proposed solutions to them when compounding rubber with additives. Inconsistent weighing caused by high scrap: Think about using pre-mixed, oil treated powders. They are easier to weigh and cleaner to handle. They are delivered to the compounding plant surface wetted for faster mixing and multi-ingredient for … Continued

New Brochure

Proud to be publishing our new brochure.  If any of you are curious of our capabilities, have a look.  Thanks to Big Rig Media for assisting us in putting this together for us.  They’ve been an excellent marketing partner.


The Roots of Mixing Rubber

The latex fluid that leaks from rubber trees contains isoprene molecules like many plants and trees. Isoprene, as it dries, bumps into other molecules and reforms with electrons eventually ending up in chain-like strands. Called polyisoprene polymer, the strands cling together much like the opposite poles to magnets. The rubber fibers are held together by … Continued

Modulus Defined

Modulus is the force required to stretch a defined specimen of rubber to a given percent elongation. Most often, modulus is reported at 300% elongation (four times the original length). This can also be viewed as the resistance to a given elongating force. For an uncompounded elastomer, elongation is primarily a function of stretching and disentangling … Continued