Abstract: The present invention provides an impact resistant Fresnel lens comprising a resin which is obtained by polymerizing a solution consisting essentially of (a) 100 parts by weight of a monomer mixture comprising an styrenic monomer in an amount of from 60 to 99 parts by weight and a (meth)acrylic monomer of from 1 to 40 parts by weight, and (b) 1 to 50 parts by weight of a styrene-dienic copolymer based on 100 parts by weight of said monomer mixture based on 100 parts by weight of said monomer mixture. The Fresnel lens has a high refractive index and excellent transparency and impact resistance.

Abstract: A method of preparing a cylindrical corrugated article, comprising supplying a sheet material in between a pair of rotatable forming rolls having interlocking corrugated surfaces thereby to press and corrugate said sheet material, mounting the resulting corrugated article on the rounded surface of one of said forming rolls by means of a guide member, and then discharging the thus mounted cylindrical corrugated article from said forming roll.

Abstract: The planographic printing plate has ink-receptive and ink-repellent areas provided on its base, the ink-repellent areas being covered with a layer formed by polymerizing and curing a composition which comprise a photopolymerizable organopolysiloxane with maleimido groups. The photopolymerizable organopolysiloxane has easily synthesized. The ink-repellency of the cured organopolysiloxane is excellent. The planographic printing plates can be used without dampening water and have a superior press life.

Abstract: An apparatus for preparing a cylindrical corrugated article, which apparatus includes a pair of forming rolls having corrugated surfaces which are drivingly interlocked for causing rotation of the rolls in opposite directions. A sheet material is fed between the rolls to cause corrugation thereof. Grooves extend circumferentially around one of the forming rolls, and ringlike guide plates extend circumferentially around the other forming roll, which guide plates have the fore ends thereof disposed within the grooves. These guide plates thus ensure that the corrugated sheet material is coiled around the other forming roll. A discharging device then coacts with the other roll for axially removing the cylindrical corrugated article therefrom.

Abstract: A square bag consisting of a tubular body made of thermoplastic film with its outer surface processed to be hardly weldable and a couple of rectangular closures made of thermoplastic film for closing the top and bottom openings of said body, said tubular body being flat when empty and the top and bottom openings of said body being formed into the front and rear horizontal flaps spreading horizontally and a pair of bisymmetric triangular end plates lapped over two sides of said flaps by pressing said openings vertically, which bag is characterized in that the top closure consists of a valve plate and a cover plate, one side edge of both plates is inserted beneath said triangular end plates, respectively, to overlap each other and heat-sealed, the other side edge of said cover plate extends over the other side edge of said valve plate to form a valve lip, the overlapping portions of the front and rear side edges of the valve plate and the cover plate and the front and rear side edges of the horizontal flaps of

Abstract: A decorative laminated structure having on its surface a pattern composed of concaves and convexes which are formed by local heat shrinkages of a layer of a heat-shrinkable resin sheet employed. Such decorative laminated structure can be obtained by laying a base, a heat-shrinkable resin sheet and a picture layer containing at least a plurality of heat sensitive picture areas in a predetermined order to form a composite material, said heat sensitive picture areas being contiguous and closely adherent to said heat-shrinkable resin sheet; and irradiating the resulting composite material with a heat ray to cause said heat-shrinkable resin sheet at its portions corresponding to said heat sensitive picture areas to cave in, thus forming concaves.

Abstract: A dry planographic printing ink composition which comprises a vehicle for an ink, a pigment and a solvent, characterized by using as a portion of the vehicle 1 to 40% by weight of a silicone modified alkyd resin containing 5 to 50% by weight of at least one of the organopolysiloxanes substituted by amino groups represented by the average composition formulas: ##EQU1## AND ##EQU2## WHEREIN Z stands for an amino group or mono-valent substituent having a terminal amino group, R.sup.1 stands for a di-valent hydrocarbon group containing 1 to 3 carbon atoms, R.sup.2 stands for a mono-valent hydrocarbon group containing 1 to 3 carbon atoms, R.sup.3 stands for a hydrogen atom or mono-valent hydrocarbon group containing 1 to 40 carbon atoms, R.sup.4 stands for a methyl group or phenyl group at least 90 molar % of which is the methyl group, R.sup.5 stands for a hydrogen atom or mono-valent organic group, n is 1, 2 or 3, m is 0 or 1, x + y is 6 to 200 and y/x is 1/100 to 40/100 and w is 5 to 50.

Abstract: A process for manufacturing a body of a moisture-proof container having at least two recesses for packaging purposes which comprises adhering a metal foil to a first thermoplastic resin film with a hot melt-type adhesive to form a laminated sheet, forming at least two closed blank portions in said laminated sheet by cutting only the metal foil, adhering a second thermoplastic resin film on the surface of the metal foil and stretch-forming said closed blank portions of the laminated sheet at a temperature wherein the hot melt-type adhesive and the thermoplastic resin films are softened, thereby forming said recesses.