J. Allcock & Sons NBR Crumbs

Identification & Functionality

Chemical Family

Nitrile Rubbers

Polymer Name

Acrylonitrile Butadiene Rubber (NBR)

Technologies

Elastomers

Product Families

Elastomers — Specialty Elastomers

Nitrile Rubbers

Features & Benefits

Labeling Claims

Recycled

Materials Features

Good Stability,

High Surface Area,

Oil Resistant,

Ozone Resistant

Applications & Uses

Markets

Automotive & Transportation

Applications

Automotive & Transportation — Automotive

Tires

Plastics & Elastomers End Uses

Tires

Uses

Used in oil resistant formulations, it will not seriously reduce the oil resistant properties, but will give the usual properties expected from crumb.

How to Use

Use as you would use any other rubber crumb.

Properties

Physical Form

Crumbs,

Solid

Typical Characteristics

It is produces as a free flowing powder, usually of 30’s or 40’s mesh. Although other sizes may be available.

Regulatory & Compliance

Certifications & Compliance

REACH (Europe)

Technical Details & Test Data

How is Rubber Crumb Produced?

• The incoming waste is identified and checked and is then progressively broken down in size by passing it through very high energy cutters and granulators. The granulators have a removable, perforated "basket" as the base and this can be changed as required. The full range of sizes runs from 2.5 to30mm. The common, usual sizes would be 4 or6mm, and larger chunks would "whirl" around inside, passing through the cutters again and again, until they were small enough to fall through the basket. Vibrating sieve units separate or grade the output. High strength magnets are used at every possible flow point to ensure that any residual metal particles are removed.
• At this stage the material is known as "granules" and has a ready outlet in safety surfacing and the like. It is used in the same way as the stone "chips" in tarmac.
• After the rubber has been reduced to granules they are ready to be turned into crumb. Our crumb is one of the best quality available and the exact production method is an industry secret.

Packaging & Availability

Packaging Type

Bags,

Boxes

Packaging

• Usually packed in 25kg bags, stacked 40 to a pallet.
• Other sizes / forms of packaging may be available on request.

Storage & Handling

Shelf Life

If protected from heat and light it will last almost indefinitely, although it is usual to quote 2 years.