Continuous envelope system
AssigneeConverters Incorporated
InventorArchibald H. Welch
Life of this patent
Estimating the term…
Abstract
A continuous envelope system for attaching generally conventional paper envelopes to a paper carrier sheet with spots of adhesive adjacent the outer edge of the envelope sealing flap and adjacent the upper edge of the envelope back panel and employing a detacher for subsequently detaching the envelopes from the paper carrier sheet as they are conveyed through the detacher by gradually separating the carrier sheet from the envelopes to form connecting tears therebetween and by severing the connecting tears at the envelopes with the teeth of a severance blade to detach the envelopes without forming unacceptable blemishes thereon.
Claims16
In a continuous envelope system for attaching envelopes in succession to an elongated paper carrier sheet and subsequently detaching the envelopes from the carrier sheet, the envelopes having a transversely extending envelope body with a front panel and a back panel with an upper transverse edge defining an envelope opening and an upper sealing flap with an upper transverse edge and a lower transversely extending fold connector to the front panel providing for folding the sealing flap rearwardly and downwardly into sealing engagement with the back panel to seal the envelope, the continuous envelope means comprising the steps of attaching the envelopes in longitudinal succession to the carrier sheet to form an elongated composite envelope and carrier sheet product, with each envelope extending transversely of the elongated carrier sheet, the sealing flap open and lying beneath the body of the succeeding envelope and the sealing flap and back panel in engagement with the carrier sheet, with attachment spots between each envelope and the carrier sheet at the sealing flap and the back panel, and subsequently detaching the envelopes in succession by longitudinally conveying the elongated composite envelope and carrier sheet product forwardly with the envelope sealing flaps trailing the envelope body, and gradually separating the envelopes and carrier sheet as they are being longitudinally forward conveyed to form from the attachment spots surface tear connectors between the carrier sheet and envelopes, and severing, with severance means provided between the gradually separating envelopes and carrier sheet, the tear connectors interconnecting each envelope and carrier sheet adjacent the envelope to remove the tear connectors from the envelope as the carrier sheet and envelope are being conveyed longitudinally forwardly and gradually separated.
In a continuous envelope system for attaching envelopes in succession to an elongated paper carrier sheet and subsequently detaching the envelopes from the carrier sheet, the envelopes having a transversely extending envelope body with a front panel and a back panel with an upper transverse edge defining an envelope opening and an upper sealing flap with an upper transverse edge and a lower transversely extending fold connector to the front panel providing for folding the sealing flap rearwardly and downwardly into sealing engagement with the back panel to seal the envelope, the continuous envelope system comprising the steps of attaching the envelopes in longitudinal succession to the carrier sheet to form an elongated composite envelope and carrier sheet product, with each envelope extending transversely of the elongated carrier sheet, the sealing flap open and lying beneath the body of the succeeding envelope and the sealing flap and back panel in engagement with the carrier sheet, with attachment spots between each envelope and the carrier sheet at the sealing flap and the back panel, and subsequently detaching the envelopes in successionn by longitudinally conveying the elongated composite envelope and carrier sheet product forwardly with the envelope sealing flaps trailing the envelope body, and gradually separating the envelopes and carrier sheet as they are being longitudinally forwardly conveyed to form from the attachment spots surface tear connectors between the carrier sheet and envelopes, and severing the tear connectors interconnecting each envelope and carrier sheet adjacent the envelope to remove the tear connectors from the envelope as the carrier sheet and envelope are being conveyed longitudinally forwardly and gradually separated, the separation step being provided by supporting the composite envelope and carrier sheet product on flat thin track means received between the envelope and carrier sheet and separating the carrier sheet from the track means.
A method for detaching the paper articles from an elongated paper carrier sheet to which the paper articles are attached in longitudinal succession at individual attachment spots of the paper articles and carrier sheet to form an elongated composite product for use in processing the paper articles, comprising the steps of conveying the elongated composite product longitudinally forwardly, and separating the paper articles and carrier sheet as they are being longitudinally forwardly conveyed to form, from the attachment spots, surface tear connectors between the paper carrier sheet and paper articles, and severing, with severance means provided between the separating paper articles and carrier sheet, the tear connectors interconnecting the paper carrier sheet and paper articles immediately adjacent the paper articles to detach the paper articles from the carrier sheet as the carrier sheet and paper articles are being conveyed longitudinally forwardly.
A method for detaching the paper articles from an elongated paper carrier sheet to which the paper articles are attached in longitudinal succession at individual attachment spots of the paper articles and carrier sheet to form an elongated composite product for use in processing the paper articles, comprising the steps of conveying the elongated composite product longitudinally forwardly, and separating the paper articles and carrier sheet as they are being longitudinally forwardly conveyed to form, from the attachment spots, surface tear connectors between the paper carrier sheet and paper articles, and severing the tear connectors interconnecting the paper carrier sheet and paper articles immediately adjacent the paper articles to detach the paper articles from the carrier sheet as the carrier sheet and paper articles are being conveyed longitudinally forwardly, the separation step being provided by gradually separating the paper articles and carrier sheet at an acute angle as they are being longitudinally forwardly conveyed and the interconnecting tear connectors being severed to detach the paper articles from the carrier sheet as the paper articles and carrier sheet are being gradually separated and the interconnecting tear connectors are thereby maintained in tension.
A method for detaching the paper articles from an elongated paper carrier sheet to which the paper articles are attached in longitudinal succession at individual attachment spots of the paper articles and carrier sheet to form an elongated compositie product for use in processing the paper articles, comprising the steps of conveying the elongated composite product longitudinally forwardly, and separating the paper articles and carrier sheet as they are being longitudinally forwardly conveyed to form, from the attachment spots, surface tear connectors between the paper carrier sheet and paper articles, and severing the tear connectors interconnecting the paper carrier sheet and paper articles immediately adjacent the paper articles to detach the paper articles from the carrier sheet as the carrier sheet and paper articles are being conveyed longitudinally forwardly, the severing step being provided by severing the interconnecting tear connectors immediately adjacent the paper articles with the interconnecting tear connectors under tension and by a toothed edge which grips the tensioned interconnecting tear connectors adjacent the paper articles to sever them from the paper articles as the paper articles are forwardly conveyed therefrom.
A method for detaching the paper articles from an elongated paper carrier sheet to which the paper articles are attached in longitudinal succession at individual attachment spots of the paper articles and carrier sheet to form an elongated composite product for use in processing the paper articles, comprising the steps of conveying the elongated composite product longitudinally forwardly, and separating the paper articles and carrier sheet as they are being longitudinally forwardly conveyed to form, from the attachment spots, surface tear connectors between the paper carrier sheet and paper articles, and severing the tear connectors interconnecting the paper carrier sheet and paper articles immediately adjacent the paper articles to detach the paper articles from the carrier sheet as the carrier sheet and paper articles are being conveyed longitudinally forwardly, the interconnecting tear connectors being severed by a toothed edge which grips the interconnecting tear connectors immediately adjacent the paper articles with the interconnecting tear connectors under tension to sever them as the paper articles are forwardly conveyed therefrom, and the paper articles being forwardly conveyed to place the forward portion of each paper article under tension as the tear connectors interconnecting the paper articles to the carrier sheet are severed.
Detaching apparatus for forwardly longitudinally conveying and detaching paper envelopes and the like paper articles from a paper carrier sheet to which the paper articles are attached in longitudinal succession at individual attachment spots inwardly of the lateral edges of the paper articles of carrier sheet to form an elongated composite product for use in processing the paper articles in succession, the detaching apparatus comprising a frame, a pair of laterally spaced generally coplanar flat tracks mounted on the frame for receipt between the carrier sheet and lateral ends of the paper articles, feed means forwardly of the laterally spaced tracks for receiving the carrier sheet and paper articles and operable for forwardly feeding the composite product and separated paper articles and carrier sheet, and a separator intermediate the entry tracks and feed means providing for conveying the paper articles in succession on one side thereof and the carrier sheet on the other side thereof and thereby separate the carrier sheet from the paper articles in succession, the separator being oriented relative to the feed means and entry tracks to provide gradual separation of the carrier sheet from the paper articles in succession to form tear connectors therebetween from the spot attachments, the separator having a severance blade edge at the rear leading edge thereof and adjacent said one side thereof for shearing the tear connectors, connecting a paper article to the carrier sheet, at the paper article as the paper article is conveyed on one side of the separtor past the severance blade edge.
In a continuous envelope system for attaching envelopes in succession to an elongated paper carrier sheet and subsequently detaching the envelopes from the carrier sheet, the continuous envelope system comprising the steps of attaching the envelopes in longitudinal succession to the carrier sheet to form an elongated composite envelope and carrier sheet product with attachment spots between each envelope and the carrier sheet at unweakened areas of the elongated carrier sheet, and subsequently detaching the envelopes in succession by longitudinally conveying the elongated composite envelope and carrier sheet produce forwardly and gradually separating the envelopes and carrier sheet as they are being longitudinally forwardly conveyed to form from the attachment spots surface tear connectors between the carrier sheet and envelopes, and severing, with severance means provided between the gradually separating envelopes and carrier sheet, each tear connector interconnecting each envelope and carrier sheet adjacent the envelope and with the tear connector in tension between the envelope and carrier sheet to remove the tear connector from the envelope.
Dependencies are inferred from the claim text.