摘要:
A multi-layer bonded foil 10 which forms the inner wrapper of a cigarette pack is provided with a tear line 14 to facilitate opening a tear flap 15. The tear line is formed by a fixed lower tool 25 having a raised rib 28 flanked by grooves 29, 30 and a reciprocable upper tool 20 having a pointed edge 21 and movable between guide supports 22, 23. The upper tool is heated and forced into the foil to stretch-weaken its upper polyester layer 11 and central aluminum foil layer 12, and to simultaneously heat soften and deform its lower polyethylene layer 13.
摘要:
A machine direction method of manufacture of reclosable packages is disclosed wherein a semi-circular or similarly shaped perforated pattern is punched in the web in registration with the package side seals. Continuous lines of perforation are punched in the web parallel to the top of the package. The web is folded and shaped into a package with a header which includes the semi-circular perforated pattern and the lines of perforation. A similar transverse direction method of manufacture is disclosed. When the top corner of the header is pulled, the header tears along the shaped perforation until it meets the horizontal line of perforation, thereby avoiding tearing through the area of the header that is sealed to the zipper flange, the header then tears along the horizontal perforation and finally follows the shaped perforation on the opposite end of the package.
摘要:
An apparatus for imparting a tearable region to a pre-formed pouch. A lower block has a flat surface on which is provided a lower perforating member that corresponds to a corner of the unsealed pouch. The lower perforating member has been formed by depositing a large number of particles having acute corners and a Mohs hardness of not less than 5 on the lower block flat surface. An upper block with an upper perforating member that corresponds to the corner of the pouch is arranged above the lower block. The upper perforating member has been formed by depositing a large number of particles having acute corners and a Mohs hardness of not less than 5 on the upper block flat surface. The upper perforating member opposes the lower perforating member. The upper block is moved towards the lower block, pressing the acute corners of the particles into opposing surfaces of the preform, sealing the pouch with a tearable area.
摘要:
A reclosable bag includes a detachable reclosure tie having a tail portion formed by a series of spaced elongated seals and a closed loop. Apparatus for forming the reclosure tie with a bag includes first and second sealing jaws with external and internal grippers for holding web material. The first sealing jaw carries cutting and perforating knives and a cooling block that directs cooling air onto the knives to prevent the knife temperature from rising to the melting temperature of the web material. Each sealing jaw contains a heating block with complementary sealing surfaces for forming various seals including the seals that form the tail portion of the reclosure tie.
摘要:
A dispenser system having a substantially large pouch (20) for holding a substantially large amount of viscous food product for dispensing from a dispenser (122). The pouch is formed so as to include a tear strip (38) to open a funnel-shaped, centrally disposed outlet spout (24) and to be sealingly held in the dispenser. The pouch may include a pair of alignment/holding openings (32, 34) formed on either side of the outlet spout for aligning the pouch in a preferred position in the dispenser, so that a piston-type extruding member (136) may pressurize and dispense predetermined size shots of viscous food product therefrom.
摘要:
A recloseable container comprises an outer carton and a collar disposed therein. The outer carton includes opposing top and bottom walls, opposing front and back walls, and opposing side walls. The collar is press bonded to one or more of the inner surfaces of the opposing front and back walls and the opposing side walls of the carton. The opposing side walls and the front wall of the carton include a continuous horizontal tear strip for opening up the carton from a sealed form to form a lid hingedly attached to a base section. To manufacture the recloseable container, an outer surface of a strip of collar material is press bonded to an inner surface of carton material. The attached carton material and strip of collar material are then simultaneously die-cut and scored to produce a respective carton blank and collar blank from which the recloseable container is formed.
摘要:
An enlarged dispensing pouch for holding viscous food product for dispensing from a specific hand held or similar type dispenser, is formed so as to include a tear strip which will accurately and consistently open a funnel-shaped, centrally disposed outlet spout formed in the pouch. The tooling to form the tear-off strip across the pouch and up to the outlet spout includes a plurality of blade groupings having specifically sized and shaped blades to form a predetermined number of enlarged perforations and smaller end perforations along the tearline of pouches to enable the tear strips so formed to be accurately and consistently torn off the pouches.
摘要:
A device for forming slits, or through cuts, in a plastic film. The device is a disc having a circumferential surface and pseudotriangular slender cutting edges consisting of protrusions aligned linearly in a plurality of straight rows extending around the entire circumferential surface, the protrusions extending outwardly from said circumferential surface at angle of at least 60.degree. and no greater than 100.degree..
摘要:
This invention provides an easily openable tightly sealed plastic bag which is formed of a film containing at least a substrate layer and a heat seal layer and is possessed of a sealed part whose substrate layer contains a multiplicity of through cuts, these cuts being formed substantially on the edge lines and partly or wholly closed with the heat seal layer. This tightly sealed bag safely retains the practical strength normally expected of any bag and avoids accidentally sustaining rupture while the bag is being transported or handled and yet permits itself to be opened with the force of finger tips. This invention manifests its utility particularly in a tightly sealed bag which is formed of a substrate of high strength and high barrier property. This invention further provides a method suitable for the production of the tightly sealed bag described above and a device to be used in working the method. The easily openable tightly sealed plastic bag of particularly desirable quality can be obtained by the method and the device so provided by this invention.