Abstract: Methods by which a dry-formed loose fibrous web is bonded by applying to one of its surfaces a low add-on level of a relatively high binder solids concentration bonding material to form a once-bonded web, and to the other side of the web, a greater add-on level of a relatively lower solids concentration bonding material, the first-applied emulsion preferably adding from about 20% to about 40% binder solids by weight, and the second-applied adding the rest of the total binder solids to be included in the fibrous web product. The bonding material can be a solution or emulsion. Preferably, the first and second-applied bonding materials are water-based latex emulsions, the solids concentration of the first-applied emulsion is from about 15% to about 25% by weight, that of the second-applied emulsion is from about 10% to about 20% by weight based on the total binder solids to be included in the fibrous web product, and a vacuum draws the second-applied bonding material into the web.

Abstract: A fully assembled carton has a novel end panel construction. End flaps extend from at least one of the bottom, front and rear wall panels. Closure flaps on opposed edges of the top closure panel extend downwardly over portions of the end flaps and terminate at free edges. Closure flap extensions abut the free edges of the closure flap, extend downwardly therefrom over additional portions of the end flaps, and are affixed to adjacent portions of the end flaps.

Abstract: A method of jet ink printing to produce opaque images including jet ink printing a surface with a nonaqueous jet ink composition, and subsequently contacting the surface with a resin opacifying solvent before the ink composition has dried, to separate the solvent in the ink composition from the solids therein and render the image opaque. The surface which is to be printed on may be wetted with a resin opacifying solvent before printing or may be dry.

Abstract: The addition of a small amount of a phenol to an ethylene-vinyl alcohol oxygen-barrier layer significantly improves oxygen impermeability under high humidity conditions.

Abstract: A reclosable carton having a receptacle portion and a cover portion which is adapted to hingedly close and lock onto the receptacle portion. A reinforcing flap is hingedly connected across the top front edge of the receptacle portion of the carton to resist bowing of a partially emptied carton. An extension flap is adhered to the front panel of the carton and splits away from a depending front flap of the cover as the cover of the carton is initially opened by a user. A locking tab is formed by the detachment of a portion of the extension flap which remains hingedly connected to the front flap. The locking tab engages the edges of the void from which it was removed to provide a locking action on reclosure. The locking tab easily disengages with a toggle action upon reopening of the cover.

Abstract: Photopolymerizable epoxide compositions are provided which contain photoinitiators decomposable upon exposure to electromagnetic radiation to produce a Lewis acid and polymerizable epoxide compounds including an epoxide ether compound having the following general structural formula: ##STR1## wherein n equals 1-3 and wherein R is an aliphatic or cycloaliphatic group having 5-12 carbon atoms. Other epoxide compounds may be used in combination therewith to provide compositions which cure rapidly to a tack-free condition at ambient temperatures. Specific epoxide ethers disclosed are those in which n=1 and R is a group selected from the class of 2,2-dimethylpropane, 2-ethyl-1,3-hexane, 1,4-dimethylcyclohexane and 1,10-decane.

Abstract: A carrier for one or more stackable articles formed from a paperboard blank of generally rectangular configuration. The blank is folded about a score line intermediate its short ends so that adjacent regions are divergent at an angle. A pair of aligned slots in each adjacent region serve as a hand-hold. The blank further has confronting side panels extending downwardly from the adjacent, divergent regions, and panel portions cut from the side panels are folded toward one another along score lines adjacent free ends of the blank in formation of openings in the side panels, and are fastened to one another in provision of a bottom for the carrier. An article may be carried singly, or several stacked upon one another while supported on the bottom and projecting through, and retained within blank portions that define, the side-panel openings.

Abstract: A company container a sidewall portion of generally circular cross-sectional configuration extending from a closed end portion to an open end portion. The container is of molded expanded polystyrene having a density of from about 1.0 to about 15 lbs./ft.sup.3, and a thickness of from about 35 to about 100 mils. A reinforcing band encircling the sidewall portion and firmly adherent thereto comprises paper of from about 1 to about 2 mils thick, and having a basis weight of from about 9 to about 20 lbs./ream.

Abstract: A carton blank may be folded by folder blades supported on an adjustable plate positioned on one side of a chain which carries a clamp by which the carton blank is pulled through the machine. After folding, the blank is glued to complete a flat shell and the shell is then inverted; the clamp is articulated so the shell may be turned in a horizontal plane to align a datum line on the shell to a datum line on a cartoner machine.

Abstract: Apparatus for dispensing and selectively cutting lengths of plastic film from a roll. A box-shaped container has side, front, rear, and bottom walls, and a cover hinged adjacent the rear wall. The cover affords access to the container, so that a packaged roll of film may be placed inside with its axis extending between and perpendicular to the side walls. The container has side spacers that normally receive a 4-inch width roll package, and a narrower, 2-inch width roll package may be received for which there are provided extensions for the spacers. The spacers slightly compress the package to provide drag on the roll as it becomes lighter. Disposition of the roll package is such that film may be removed from the upper region of the roll, through a slotted opening between the front wall and the adjacent free edge of the closed cover.

Abstract: A flat pouch is provided with reinforcements along its opening edge adjacent the predetermined locations where sharp corners are desired when the pouch is opened. The reinforcements resist flexing when the pouch is opened, thus ensuring bending of the pouch material, and the formation of sharp corners, at the predetermined locations.A method is also provided for opening the pouch, which method ensures reliable formation of the required sharp corners in the predetermined locations.

Abstract: An epoxide coating composition which is relatively stable to ambient white light and activated upon exposure to ultraviolet light to produce a hard glossy coating includes a cationically polymerizable material consisting at least principally of an epoxide prepolymer. Also included are a titanium dioxide pigment and a photoinitiator component including a first photoinitiator compound selected from the class consisting of hexafluorophosphate, fluoroborate, fluoroantimonate or fluoroarsenate salts of the following diazonium compounds: 2,5-diethoxy-4-p-tolylmercaptobenzene diazonium, 4-chloro-2,5-dimethoxybenzene diazonium, 2,5-dimethoxybenzene diazonium, 2,5-dimethoxy-4-p-tolylbenzene diazonium and 2,5-dibutoxy-4-benzamidobenzene diazonium, and mixtures thereof. The preferred compositions additionally contain a second photoinitiator compound which is relatively stable to radiation having a wavelength of at least 355 nanometers and decomposable by radiation in the range of 200-355 nanometers.

Abstract: A container having a tray portion and a cover sealed to the peripheral top edges of the tray. Cut score lines on the inner side of the cover provide a splitting of the paperboard of the cover upon opening to allow the cover to be peeled from the tray to a hinge at the back edge of the tray. Offset double cut score lines may be provided on the upper and lower sides of the cover at the front edge of the tray, which will split upon opening of the cover to yield overlapping locking flaps which can be used to reclose the cover. Flanges may be attached to the lateral side edges of a paperboard tray by cut score hinges, and adhered to the inner side of the cover to provide layer separation of the flanges upon opening rather than layer separation of the cover. Alternatively, double cut score lines can be formed along the lateral sides of the cover in positon to register with lateral side flanges on the tray, which split and provide overlapping locking flaps when the cover is opened.

Abstract: Apparatus and method for the manufacture of a fibrous web comprises a distributor for depositing dry wood fibers on a planar section of a linearly movable forming wire. A suction box is disposed to the side of the forming wire opposite the distributor. The distributor and suction box are so cooperatively constructed and arranged as to impart a velocity component to the fibers in the direction of movement of the forming wire, so that the angle of inclination of fiber deposition relative to the moving forming wire is from about 21 degrees to about 30 degrees.

Abstract: Hermetically sealed articles are provided which enclose a porous mass of material of relatively low heat conductivity and a charge of a gas having a coefficient of thermal conductivity lower than that of air and thoroughly permeating the porous mass of material or such sealed pouches may enclose only the porous mass of material evacuated down to about 10 mm. Hg.

Abstract: An apparatus for fabricating absorbent, puffy sheet structure comprising a pair of plies of web material adhered in continuous linear regions interspersed with pocket portions. Portions of the plies forming the pocket portions include inwardly presented perforate bosses that enhance softness and water absorbency. The apparatus comprises a pair of matched-pattern, synchronously rotatable steel rolls each provided with small, sharp, ply-perforating members in the recesses between land areas, in combination with synchronous rotatable rubber embossing rolls urged against the rotatable steel rolls and intervening plies to form the perforate bosses.

Abstract: Hollow tubular container of irregular configuration in cross-section collapsible into flat condition.

Abstract: In plastic pouch forming, improved vacuum boxes that are movable toward and away from one another are provided. Each vacuum box comprises a series of superimposed, paired, mutually spaced vacuum ports in fluid communication with one another, the outer pair of ports being resilient and adapted to frictionally engage a wall portion of a flattened pouch and to flex open upon application of a vacuum to draw portions of the pouch wall into a cavity defined by an underlying port.

Abstract: A reactor system for continuously effecting the hydrolysis of cellulosic materials, as relatively concentrated aqueous mixtures, comprises a tubular reactor, a high solids pump, steam injecting means, a discharge valve controlled by pressure-responsive means, and means for collecting and recovering the reaction products from the hydrolyzate. The high-solids pump apparatus utilizes a valve having a flow distributing passageway of arcuate, uniform circular cross-section. The various portions of the apparatus are constructed with uniform internal dimensions and configurations, so as to avoid any constriction to flow of the material therethrough, thus minimizing the tendency for blockages to occur therewithin. The loading mechanisms are unloaded alternatingly by a reciprocating ram, so as to substantially continuously feed material through the associated valve.