公开(公告)号：US3665673A

公开(公告)日：1972-05-30

申请号：US3665673D

申请日：1969-07-28

Applicant: FMC CORP

Inventor： BILLETT RONALD J ,  HOLTKAMP WILHELMUS H ,  VIITANEN VEIKKO K

IPC: B65B9/02 ,  B65B41/14 ,  B65B51/30

CPC classification number: B65B41/14 ,  B29C65/02 ,  B29C65/18 ,  B29C65/305 ,  B29C65/743 ,  B29C66/1122 ,  B29C66/133 ,  B29C66/244 ,  B29C66/43 ,  B29C66/71 ,  B29C66/73711 ,  B29C66/81419 ,  B29C66/81427 ,  B29C66/81431 ,  B29C66/81457 ,  B29C66/849 ,  B29C66/872 ,  B29C66/91231 ,  B65B9/02 ,  B65B51/306 ,  B29K2027/06

Abstract: Food products supported on trays, of the clear or opaque variety, are fed, either manually or automatically, between plastic webs which constitute an overwrap for the tray and a product carried thereby. The plastic webs follow paths which intersect and they are joined along a transverse line by heated sealing and cutting mechanisms. Tray supported products, for convenience called units, are fed toward and past the juncture of the webs, while the webs are unwound from their respective parent rolls, enveloping the unit to be packaged therebetween. Thereafter the longitudinal edges of the webs adjacent the unit are heat sealed and cut while simultaneously therewith the webs are transversely joined along transversely spaced lines adjacent the trailing end of the unit resulting in a hermetically sealed unit and joining of the web ends to provide a juncture for a subsequent package.

Abstract translation: 支撑在清洁或不透明品种的托盘上的食品，可以手动或自动地进入构成托盘的外包装的塑料网和由其携带的产品之间。 塑料网沿着相交的路径，并且通过加热的密封和切割机构沿着横向线连接。 托盘支撑的产品为了方便所称的单元，朝着并超过幅材的接合处被馈送，而幅材从它们各自的母辊展开，包围待包装的单元。 此后，邻近单元的腹板的纵向边缘被热密封和切割，同时，腹板沿着与单元的尾端相邻的横向间隔的线横向连接，从而形成密封单元并连接腹板端部以提供接合处 用于随后的包装。