Abstract:
A package for a roll of photosensitive material (3) having generally flat end surfaces, which comprise an opaque moisture-proof leader (6) joined to the free end of the roll (3) and wrapped circumferentially at least once around the roll, a pair of side lips (9, 24) extending beyond the side edges of the leader (6) and being formed either by a strip of tearable adhesive material (9) attached to each side edge of the leader (6) or by a strip of tearable adhesive material (23) attached to the leader, said pair of lips having an adhesive on their top most surface, said pair of edge lips being folded down over the two ends of the roll, together with two annular end covers (14) for the ends of the roll which are adhered to the adhesive covered folded down side lips thereby holding the end covers (14) in place over the ends of the roll (3).
Abstract:
Disclosed are novel radiation-sensitive negative-working surface-sensitive emulsions and materials exhibiting reduced pressure sensitivity. One aspect of the present invention is directed to silver halide crystals with low propensity towards black and preferably also towards white pressure sensitization. Other aspects of the invention are directed to photographic emulsions containing the foregoing crystals and to photographic materials containing such emulsions.
Abstract:
An apparatus (10) and related process for enhancement of woven and knit fabrics through use of dynamic fluids which entangle and bloom fabric yarns. A two stage enhancement process is employed in which top and bottom sides of the fabric are respectively supported on members (22, 34) and impacted with a fluid curtain including high pressure jet streams. Controlled process energies and use of support members (22, 34) having open areas (26, 36) which are aligned in offset relation to the process line produces fabrics having a uniform finish and improved characteristics including, edge fray, drape, stability, abrasion resistance, fabric weight and thickness.
Abstract:
The present invention provides for improvements in the preparation of chemical cellulosic wood pulp for use in papermaking, and specifically to enhancement of the quality of a kraft pulp which has been subjected to a chlorine dioxide/chlorine bleaching stage and thereafter subjected to ozonation prior to an extraction stage in the bleaching sequence. The improved pulp of the present invention exhibits reduced total organically bound chlorine residues in the wood pulp and adsorbed organic halides (AOX) in the effluent, and has good brightness and viscosity. The advantages of the present invention may be accomplished by means of a bleaching sequence that employs a minimum of stages, namely (D->C)ZED or DcZED with attendant relatively lower capital investment than heretofore possible.
Abstract:
A method is described for producing chlorine dioxide by reacting alkali metal chlorate with methanol, metal chloride, and hydrogen peroxide in an aqueous acidic medium. Combining these reducing agents causes an unexpected enhancement in chlorine dioxide generation.
Abstract:
A method is described for producing chlorine dioxide by reacting alkali metal chlorate with methanol and hydrogen peroxide in an aqueous acidic medium. Combining these reducing agents causes an unexpected enhancement in chlorine dioxide generation.
Abstract:
Method and apparatus employing radio frequency electric energy for heat sealing of laminated packaging materials (58, 60), particularly aseptic packaging materials, that include facing contiguous layers of thermoplastic material (84, 86), including first and second seal jaws (40, 56) having respective working surfaces (52, 54). The working surface (52) of the first seal jaw (40) is defined by a plurality of working faces of alternating layers of electrically conductive and electrically nonconductive materials (46, 48, 46', 48', 46''). Upon the application of RF energy across the electrically conductive layers (48, 48') of the first seal jaw (40), selective melting of the layers of thermoplastic material (84, 86) occurs, whereupon the contact pressure exerted by the seal jaws (40, 56) upon the layers of packaging material (58, 60) is assumed by the volume of nonmolten thermoplastic material disposed between the faces of the electrically nonconductive layers (46, 46', 46'') of the first seal jaw (40) and the working surface (54) of the second seal jaw (56), thereby causing the seal jaws (40, 56) to move toward each other by a limited amount by reason of deformation of the packaging material (58, 60). A seal of consistent and good uniformity is formed.
Abstract:
An elastomeric laminated fabric which is elastic in the cross direction. The laminate includes an elastomeric film (2) having one or two nonwomen webs (4, 6) of carded thermoplastic staple fibers thermally point bonded thereto (11) using heated calendar rolls. The resulting laminated fabric is stretchable by at least 100 % in the cross direction without breaking for at least two cycles and recovers elastically. The fiber content of the nonwomen webs is at least 50 % high-elongation polyolefin staple fibers having a breaking strain of at least 400 %.
Abstract:
An extended long life juice carton structure is provided which has low oxygen permeability, is leak free, has minimal characteristics without sacrificing the ability to skive the side seam or use hydrogen peroxide as a sterilizing substance. The container structure has a polyamide polymer layer (14), a layer of ehtylene vinyl alcohol copolymer (24) with an ehtylene comonomer content of 27-32 mole %, and a thin matte side layer polyolefin polymer (28).
Abstract:
An hydraulic treatment apparatus (10) and method is provided for finishing and upgrading the quality of filament cloth materials. The fabric (12) is supported on a member (52, 54) and impacted with a uniform, high density jet, fluid curtain (34, 70) under controlled process energies. Low pressure/low energy treatments spread filaments in the fabric to reduce air porosity and provide improved uniformity in material finish. High pressure and energy treatments increase fabric bulk and porosity. Fluid treated fabrics of the invention demonstrate substantial improvement in at least two of uniformity, cover, opacity, increased or decreased bulk, increased or decreased air permeability, abrasion resistance, tensile strength, edge fray, and seam slippage.