摘要:
A process is provided for the opening of envelopes made of cellulosic paper in which there is applied to at least one envelope edge as the sole reactant with the cellulose therein a non-noxious organic acid having at least one pK value at room temperature between about 1.5 and about 5, followed by the application of heat and mild mechanical action to the envelope edge.
摘要:
A method and apparatus is disclosed for exposing the contents (32) of an envelope (24) which has two opposing panels (26,28) wherein the panels have been separated from each other along all but one edge portion (30) where the panels remain connected. The envelope (24) is gripped on one (26) of the panels (26, 28) and then the envelope (24) is oriented so that at least the contents (32) of the envelope (24) fall away from the gripped panel to thereby expose the envelope contents (32).
摘要:
A method and apparatus is disclosed for exposing the contents (32) of an envelope (24) which has two opposing panels (26,28) wherein the panels have been separated from each other along all but one edge portion (30) where the panels remain connected. The envelope (24) is gripped on one (26) of the panels (26, 28) and then the envelope (24) is oriented so that at least the contents (32) of the envelope (24) fall away from the gripped panel to thereby expose the envelope contents (32).
摘要:
A method and apparatus is provided for transferring a batch of envelopes that have been arranged in face-to-face relationship. The envelopes (28) are transferred in a substantially horizontal plane from a first location (26) to a second location (20) spaced from the first location. The apparatus (24) includes a pair of downwardly depending spaced-apart members (124,126) which are each adapted to contact the batch (28) of envelopes along the end edges of the envelopes. One (124) of the paddles (124,126) is adapted to urge a batch (28) along a guide channel (100) from the first position (26) to the second position (20). The other (126) of the paddles (124,126) is adapted to urge a batch (28) along the guide channel (100) in the opposite direction from the second position (20) to the first position (26).
摘要:
A method and apparatus is disclosed in which a plurality of envelopes (38) are arranged and aligned in face-to-face relationship to form at least one batch (28) of envelopes (38). The batches (28) of envelopes (38) are conveyed around the endless conveying loop (250) oriented in a substantially vertical plane and defining upper and lower horizontal conveying paths. The edges (46,48,50,52) of the envelopes (38) are sprayed with a liquid envelope material degrading agent that functions more effectively when heated. The envelope edges (46,48,50,52) are contacted with planar heating members (72;92) and the envelopes (38) are bent inwardly so that the edges (46,48,50,52) are laterally displaced out of the planes defined by the major portions of the associated envelopes (38) to promote more effective contact of the envelope edges (46,48,50,52) with the heating members (72:92) whereby the envelope material is degraded along the edges (46,48,50,52).
摘要:
A process is provided for the opening of envelopes made of cellulosic paper by the action of a chemical degradation agent in the presence of radiant heat in which the radiant heat is generated from a source maintained at a temperature high enough to produce a substantial amount of radiation having a wave length of 2 microns or less and by applying to the edges to be opened a darkening material capable of absorbing a substantial portion of the incident radiant energy.