摘要:
The present invention discloses a method of producing at least a pair of interlocking adjacent layers of a paper packaging product, the pair of interlocking adjacent layers being formed of a sheet of slit paper having a slit pattern, the slit pattern upon expansion, forming cells that include land regions that are inclined with respect to a plane of an unexpanded sheet. The method comprises slitting the sheet of slit paper with beveled blades that have a first wedge angle on one side of the blades and a second wedge angle on the other side of the blades, wherein the first wedge angle is wider than the second wedge angle to produce slits that upon expansion, produce the lands regions that have angles of inclination in a range for 50 to 85 degrees.
摘要:
In the preferred embodiments, the present invention provides substantially improved slit sheet cushioning products by advantageously combining novel paper properties with novel slit patterns for improved features and characteristics. In some illustrative and non-limiting example embodiments, cushioning products of the present invention can include, e.g., a novel slit sheet material in combination with extensible paper employed as, e.g., a cushioning pad or as cushioning within an envelope product, wherein the cushioning product can be substantially more resilient, but, yet, e.g., thinner for better utilization of space.
摘要:
An unpowered, manually operable apparatus (10) for dispensing cushioning wrap material (13) includes a frame (12), a roll (14) of interleaf material (16) rotatably secured to the frame, a roll (18) of expandable sheet material (20) in an unexpanded form rotatably secured to the frame adjacent the roll of interleaf material, and a tensioning assembly (60, 70, 80, 90) operably associated with the roll of expandable sheet material to control rotational resistance thereof. The rotational resistance causes the expandable sheet material to expand in length and thickness as it is pulled with the interleaf material by a user. Typically, the roll of interleaf material and the roll of expandable sheet material are secured to the frame such that respective longitudinal centerlines of each roll are substantially aligned. In addition, typically, the axial directions of the rolls are substantially parallel.
摘要:
An apparatus for dispensing cushioning wrap material includes a box having a dispensing opening in communication with an interior of the box. A roll of interleaf material is rotatably positioned within the box such that a free end of the interleaf material can extend through the dispensing opening, and a roll of expandable sheet material in an unexpanded form is rotatably positioned within the box adjacent the first roll of sheet material such that a free end of the expandable sheet material can extend through the dispensing opening. A tensioning assembly is operably associated with the roll of expandable sheet material to control rotational resistance thereof. The interleaf material and the expandable sheet material can be concurrently pulled out of the box in abutting contact by a user and the rotational resistance of the roll of expandable sheet material causes the expandable sheet material to expand in thickness and length.
摘要:
An expandable metal product for use in extinguishing fires and in the prevention of or protection against explosions. The product is a continuous sheet of magnesium alloy foil having discontinuous slits in spaced apart lines parallel to each other but transverse to the longitudinal dimension of the sheet. The invention is also directed to the expanded form of the product, either in sheets which may be used for preventing fires or explosion or in the form of shaped ellipsoids for use in a passive inerting system for fuel tanks.
摘要:
A highly efficient flame arrester adapted for use in preventing an external flame from backflashing upstream in a pipe, or a conduit, or a stream carrying a flammable substance. The flame arrester comprises a contained layer of nested ellipsoids formed from expanded metal sheets made from magnesium alloy foil. The arrester is useful in fuel tanks, combustion systems, sea-going tankers, hot water or space heaters, and the like.
摘要:
An expandable metal product for use in extinguishing fires and in the prevention of or protection against explosions. The product is a continuous sheet of material having discontinuous slits in spaced apart lines parallel to each other but transverse to the longitudinal dimension of the sheet. The invention is also directed to the expanded form of the product, either in sheets which may be used for preventing fires or explosion or in the form of shaped ellipsoids for use in a passive inerting system for fuel tanks, as flame arresters, as anti-explosion barriers, and as shields against mechanical impact.
摘要:
An effective method for diminishing hydrocarbon vapors in fuel tanks and thereby avoiding expensive, complicated and risky procedures for capturing purged hydrocarbon vapors during refueling. The method involves filling the fuel tank with multiple pieces of expanded metal net formed in the shape of ellipsoids, to inhibit the formation of hydrocarbon vapors and to promote condensation of such vapors as may be formed.
摘要:
A highly effective module for preventing corrosion of oil well pipes and equipment and for preventing resulting fires and explosions. The module is a collar formed from slitted and expanded metal net and is adapted to fit in the annular space between the oil production pipe and the outer casing of the oil well, to prevent oxygen from the atmosphere from entering the annular space at the top of the well, and to exclude hydrocarbon vapors from the subterranean production zone from entering the annular space at the bottom of the well. The invention also relates to methods for extinguishing a burning oil well.
摘要:
A highly efficient impact absorber for protecting articles against destructive mechanical impact. The invention has special applicability to containers for flammable materials, scientific instruments, or other fragile mechanisms or articles which may be damaged or become hazardous when ruptured. The impact absorber comprises a layer or layers of expanded metal net made from magnesium alloy foil having a thickness in the range from about 0.02 to 0.50 mm. A preferred embodiment comprises a contained layer or layers of nested spheroids formed from expanded metal sheets made from magnesium foil.