Abstract: Composite materials are disclosed which consist of extensible polymer matrices in combination with three-dimensionally structured, interconnected fibrous masses which are formed "in situ". These composites exhibit novel mechanical characteristics which are distinctly different from those exhibited by conventional fiber-filled elastomers.

Abstract: A combination master/blanket printing sheet for use with a lithographic offset duplicating press includes a master layer comprising material having hydrophilic properties which is imagable to provide pre-selected oleophilic areas for receipt of printing inks and a blanket layer of hydrophobic-oleophilic material suitable for receiving and carrying thereon an inked image transferred thereto by contact with a member carrying such image. In a preferred embodiment of the printing sheet the master and blanket layers are applied by coating or other suitable techniques to opposite surfaces of a base or support layer. The printing sheet is usable in the offset printing process both as a "master" sheet, when properly imaged on the master layer, and a "blanket".

Abstract: A compressible printing blanket and method of manufacture, in which the blanket has at least one base fabric layer, an elastomeric face, and an intermediate compressible layer. The compressible layer is formed of a microporous material having cavities with interconnected passages. The material is made by admixing particles of hydrated magnesium sulfate in an elastomeric matrix, creating a blowing effect, and leaching the particles from the matrix.

Abstract: A highly conformable adhesive tape which comprises a highly extensible and elastic backing film laminated with an adhesive layer to form the tape. The adhesive is a normally tacky and pressure-sensitive elastomeric adhesive coated on at least one of the film surfaces. The film possesses a lengthwise elongation to break of at least about 200 percent, and a 50 percent rubber modulus of not above about 2,000 lbs./sq. inch. The tape is easily stretchable and normally may be removed easily from an application surface by stretching the tape lengthwise in a direction substantially parallel to the surface. This characteristic is highly important in medical applications where painless removal is desirable.

Abstract: A printing blanket and method of making same is provided wherein such blanket comprises a base structure, a surface layer made of a fluorocarbon elastomer, and a binder layer comprised of a polychloroprene elastomer which provides optimum adhesion between the base structure and the surface layer.

Abstract: A woven fabric belt having a coating of polyurethane on each face and extending through the interstices of the fabric. The polyurethane is the reaction product of a polypropylene ether glycol of 4,4'-methylene di(cyclohexylene isocyanate) cured with p,p'-methylene dianiline and having at least one face of said belt covered with the polyurethane having walnut shell powder incorporated therein.

Abstract: A removable redeemable coupon for newspaper advertisements and method and apparatus for producing same wherein the newspaper is printed in a rotary web press having a plurality of pairs of printing plate cylinders and blanket cylinders between which the web moves during the printing process. Printing plates secured in position on printing plate cylinders of certain pairs to print the faces of the web with news and advertisements including display advertisements with a redeemable coupon included therein.

Abstract: A printing blanket especially suited for use in offset lithography is provided by permanently laminating together an oil-resistant continuous rubber ink transfer layer, a strong thin tough synthetic foundation sheet, and a layer of incompressible elastomer having dispersed and bonded therein numerous minute frangible rigid-walled bubbles that have been broken uniformly throughout the elastomer layer to make it compressible.