A method for producing enveloped electroscopic filter material can include feeding, from a main spool, at least one sheet of electroscopic filter material in a first direction, feeding, from a pair of spools, sheets of cover material in the first direction such that each spool feeds a sheet of cover material along a different side of the sheet electroscopic filter material, sealing, via a pair of heat-sealing roller nips, the at least one sheet of electroscopic filter material and the sheets of cover material periodically together to form sealed portions, and cutting, via a cutting mechanism, each sealed portion to produce envelopes of electroscopic filter material. The at least one sheet of electroscopic filter material can extend to the outermost edges of each envelope such that each envelope comprises substantially the same dimensions as the at least one sheet of electroscopic filter material.

A method for producing enveloped electroscopic filter material can include feeding, from a main spool, at least one sheet of electroscopic filter material in a first direction, feeding, from a pair of spools, sheets of cover material in the first direction such that each spool feeds a sheet of cover material along a different side of the sheet electroscopic filter material, sealing, via a pair of heat-sealing roller nips, the at least one sheet of electroscopic filter material and the sheets of cover material periodically together to form sealed portions, and cutting, via a cutting mechanism, each sealed portion to produce envelopes of electroscopic filter material. The at least one sheet of electroscopic filter material can extend to the outermost edges of each envelope such that each envelope comprises substantially the same dimensions as the at least one sheet of electroscopic filter material.

A system includes a dip tube, a feed line, and a check valve. The dip tube is inserted through an opening in a source of chemical precursor and into the chemical precursor in the source. A portion of the feed line is located in the dip tube. The feed line passes out of the dip tube. The chemical precursor is capable of flowing out of the source through the feed line in a downstream direction. The check valve is located in the portion of the feed line in the dip tube. The check valve permits the chemical precursor to pass substantially only in the downstream direction. The feed line is coupled to a transfer pump that draws the chemical precursor out of the source through the portion of the feed line in the dip tube.

Disclosed herein is a packaging machine that according to one embodiment includes a rollers block with a plurality of roller assemblies distributed in series along a horizontal longitudinal axis of the machine and a transmission block with a motor and a transmission mechanism configured for transmitting the rotation of the motor to all the roller assemblies. At least one roller assembly is independent of the rest of the roller assemblies, is movable with respect to the transmission block, and is configured for cooperating with the transmission mechanism in an operative position, in which the transmission mechanism transmits the rotation of the motor of the transmission block to the roller assembly.

A doser mechanism includes a cylindrical shell, an auger conveyor, and a check valve. The cylindrical shell includes a hollow cylinder and an end plate. The hollow cylinder at least partially defines an internal enclosure extending between first and second ends of the hollow cylinder, a first opening at the first end, and a second opening through a thickness of the hollow cylinder. The end plate covers the second end. The auger conveyor includes an auger at least partially extending through the internal enclosure through the first end. The check valve has a valve member configured to selectively cover the second opening. The check valve may cause the valve member move between a rest position and an open position to cover or expose the second opening in response to a magnitude of a force applied to the valve member from the internal enclosure through the second opening.

A sealing machine is provided for sealing a sealing material by heating a fin of the sealing material wrapped around a product. The sealing machine comprises, in a transport direction of the sealing material, a pair of tracking rollers for tensioning the sealing material and a pair of heating rollers for sealing the sealing material by applying heat to the fin when the fin is moved between the pair of heating rollers. Furthermore, the pair of tracking rollers and the pair of heating rollers are configured to be driven independently.

A sealing machine is provided for sealing a sealing material by heating a fin of the sealing material wrapped around a product. The sealing machine comprises, in a transport direction of the sealing material, a pair of tracking rollers for tensioning the sealing material and a pair of heating rollers for sealing the sealing material by applying heat to the fin when the fin is moved between the pair of heating rollers. Furthermore, the pair of tracking rollers and the pair of heating rollers are configured to be driven independently.

A medicine packing apparatus is provided. The medicine packing apparatus includes: a rotation hopper provided with a plurality of partition spaces, transferring a medicine from a medicine dispenser to any one of the plurality of partition spaces through at least one injection part, and transferring the medicine to the discharge part; an inspector photographing the transferred medicine to inspect the medicine; a controller determining whether the medicine inspected by the inspector matches a medicine of a prescription; and a re-injection part disposed in a partition space between an injection part having a shortest medicine transfer distance to the discharge part on the basis of a rotation direction of the rotation hopper and the discharge part.

A shipping system for shipping planar substrates includes a plurality of planar substrates stacked to form a pack and a plurality of interleaving material including substantially spherical beads positioned between the substrates of the pack and configured to carry a load. Substantially all of the beads have a diameter within 25% of D.sub.max, where D.sub.max is a diameter corresponding to a size of an opening of an upper limit sieve used in the shipping system. Also disclosed are a spacer for use in a shipping system for shipping planar substrates, a wrapped system for shipping planar substrates, a method of wrapping a system for shipping planar substrates, and a powder applicator.

A shipping system for shipping planar substrates includes a plurality of planar substrates stacked to form a pack and a plurality of interleaving material including substantially spherical beads positioned between the substrates of the pack and configured to carry a load. Substantially all of the beads have a diameter within 25% of D.sub.max, where D.sub.max is a diameter corresponding to a size of an opening of an upper limit sieve used in the shipping system. Also disclosed are a spacer for use in a shipping system for shipping planar substrates, a wrapped system for shipping planar substrates, a method of wrapping a system for shipping planar substrates, and a powder applicator.