Raydar Rubber – Rubber Molding – Rubber Grommets – Rubber Bumpers

Primary Prepping

Pre-forming rubber for compression molders, transfer molders or custom mixers.

The rubber industry has proven that scrap rates can be reduced by using consistent preps. Primary Prepping is capable of reducing material costs in your molding process by utilizing this process.

Material we work with:

• Silicone, Viton, Nitrile, EPDM, HNBR, SBR, Natural Rubber, Neoprene, and others

Capabilities:

• Pre-formed preps accurate to within 0.5%
• Pre-formed prep weights from tenths of a gram to multiple pounds in any shape or size.
• Significantly reduces trapped air.
• Colored compounds welcome.
• Full inspection and packaging capabilities.
• 24 hour turn around time available.

Custom Shapes

• ID / OD pre-formed preps.
• Octagon, hexagon, oval, star, etc…
• Transfer pads in various shapes and sizes.
• Extruded cord: both ID /OD and solid.

Office and Shipping Address

Primary Prepping

1734 Wall Rd, Suite B Wadsworth, Ohio   44281
T 330.334.9701
F 330.334.7232

Alternative Flash, Inc.  is now located at 1734 Wall Rd, Suite B Wadsworth, Ohio   44281.

We offer

• Cryogenic tumbling and shot blasting services for rubber & plastics
• Non-cryogenic deflashing, de-burring and polishing services

(Metals, rubber, plastics, lathe-cut goods) 100% inspection and sorting available.

We have various types and   sizes of cryogenic deflashing equipment, allowing us to deflash parts from   .05” OD up to 30” OD.

Materials that we have   successfully deflashed include:

Non-cryogenic   deflashing, de-burring and polishing

Our non-cryogenic process   can produce dramatic results on metals, rubber, plastics and lathe-cut goods.

Getting started

The best way to get started   is to send a sample or a box of parts to us for a no-obligation trial to   determine the effectiveness of the process.  Following your approval of samples, we will give you a quotation for   future orders.

Office and Shipping Address

Alternative Flash, Inc.

1734 Wall Rd, Suite B Wadsworth, Ohio   44281
T 330.334.6111
F 330.334.7232

Transfer Molding

Transfer Molding involves having a “piston and cylinder”-like device built into the mold so that the rubber may be injected into the cavity through small holes.

1.  A piece of uncured rubber is placed into a portion of the mold called the “pot.” The plunger (on the top-most part of the mold) fits snugly into the “pot.”

2.  The mold is closed up and under hydraulic pressure the rubber is forced through the small hole (the “gate”) into the cavity. The mold is held closed while the rubber cures.

* Cycle times are shorter than compression molding

* Better than compression molding for rubber-to-metal bonding

3.  The plunger is raised up and the “transfer pad” material may be removed and thrown away.

4.  Mold is opened and the part can be removed. The flash and the gate may need to be trimmed.

Advantages of Transfer Molding
* Cycle times are shorter than compression molding

* Better than compression molding for rubber-to-metal bonding

Disadvantages of Transfer Molding

* The transfer pad is scrap

* Cycle time is longer than injection molding

* Product consistency is less than injection molding

Compression Molding

A method of molding in which the molding material is first placed in a heated mold cavity. With a top and bottom plate, the mold is aligned with pins and closed with a top force or plug member.

Whether you are looking to prototype

a new product you are developing, or

require a high volume of standard

distribution parts, we can supply what

you need…when you need it.

Pressure is applied to force the material between the two plates into contact with all mold areas, and heat and pressure are maintained until the molding material has cured. The process uses thermosetting resins in a partially cured stage,

either in the form of granules, putty-like masses, or preforms. Compression molding is a high-volume, high-pressure method suitable for molding complex parts. Advanced composite thermoplastics can also be compression molded with unidirectional tapes, woven fabrics, randomly orientated fiber mat or chopped strand. The advantage of compression molding is its ability to mold large, fairly intricate parts.