Abstract: Multilayer plastic pipes having at leastI. a layer based on a molding composition of polyamide; andII. a layer adjacent to layer I and based on a molding containing a mixture of(a) from 97.5 to 50% by weight of polyvinylidene fluoride; and(b) from 2.5 to 50% by weight of an acrylate copolymer,with the layers adhering to one another, are provided. These pipes exhibit improved resistance to chemical agents such as, methanol-containing fuels, without the loss of typical properties of polyamide and polyvinylidene fluoride.

Abstract: A melt calendered sheet and a process for making melt calendered sheet having excellent transparency and solvent craze resistance. Clear melt calendered sheet having a critical stress rating above 12,000 KPa, heat distortion temperature above 85.degree. C., and flexural modulus above 3,275 MPa is produced from acrylic copolymer having a melt flow rate of from about 0.3 to about 1.3 grams/10 minutes.

Abstract: A duct for transporting air within an air handling system. The inventive device includes a plurality of panels coupled together to form a hollow duct. The panels are sealed along interior surfaces thereof by coextensive foil webs. The panels can be formed from a single blank and subsequently folded into an operative orientation for use in a heating and air conditioning installation.

Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer predominantly of one or more polyolefins such as VLDPE or EVA and a coextrusion process for making the film.

Abstract: An illuminated plastic lighting of alphanumeric symbols, such as letters, numbers or words, in soft feel buttons is provided, wherein a translucent rigid base portion is covered with a soft opaque plastic. The opaque plastic has the same thickness as a raised protrusion bearing the desired alphanumeric symbol. The opaque plastic coating is applied in a fluid condition to the top level of the alphanumeric symbol, for revealing the alphanumeric symbol through a recess in the opaque elastomeric coating material. A light source is placed at the bottom of the translucent base portion. The soft feel button is specially useful for making lighted buttons and more particularly, for soft feel buttons for automobile dashboards and the like.