Method and apparatus for manufacturing infusion packages
AssigneeA. G. (Patents) Limited
InventorIan M. D. Gaylor
Life of this patent
Estimating the term…
Abstract
A travelling two-ply web of infusion packages (11) is cut transversely by rotary cutting device (50) to form individual packages (1) which are attached to a styrene cover web (70). The packages 91) and web (70) are fed at the same speed rotary attachment device (100) comprising heated welding tips (102) cooperating with an anvil roller (90). The web (70) is fed to the attachment device at constant speed, but the packages (1) are accelerated up to the speed of the web (70) by accelerating rollers (62, 63) which grip the sealed edges of the packages. This introduces the necessary gap between successive packages. A hinge line (5) is produced in the web (70) by hinging device which facilitates folding of the cover and the package when the web carrying attached packages is cut into individual lengths.
Claims28
A method of manufacturing infusion packages provided with a cover comprising a pair of leaves joined about a fold line and extending over opposed sides of the package, comprising the steps of forming pockets containing infusion material in a continuously travelling two-ply porous web;
- passing said porous web through a cutting device which forms a transverse cut through sealed regions of the porous web between the pockets to form a plurality of individual infusion packages;
- feeding continuously a web of cover material to a rotary attachment means which is synchronized with the cutting device and arranged to attach the packages to the web of cover material at a region adjacent a transverse edge of each package;
- feeding said packages from the cutting device to said attachment means, each package being accelerated as it leaves the cutting device to introduce a gap between it and a next package and to match a higher feed speed of the web of cover material such that at the time the packages are attached to said web of cover material the package and the web of covering material are travelling at substantially the same speed;
- and cutting said web of cover material to produce individual lengths of cover material, each having an infusion package arranged towards one end thereof whereby a second end of the cover material may be folded over to enclose the package therebetween.
Apparatus for manufacturing infusion packages provided with a cover comprising a pair of leaves joined about a fold line, comprising a cutting device for forming a transverse cut through sealed regions between infusion containing pockets in a travelling two-ply porous web to form a plurality of individual packages;
- rotary attachment means synchronized with said cutting device for attaching said packages to a web of cover material at a region adjacent a transverse edge of each package;
- means for continuously supplying said web of cover material to said attachment means;
- means for supplying said packages to said attachment means;
- means for accelerating each infusion package as the package leaves said cutting device so that a gap is formed between the package and a next package to be attached to the web of cover material and so that at the time the packages are attached to said web of cover material the packages and the web of cover material are travelling at substantially the same speed;
- and means for cutting said web of cover material to produce individual lengths of cover material each having an infusion package arranged towards an end thereof whereby a second end of the cover material may be folded over to enclose the package therebetween.
A method of manufacturing infusion packages provided with a cover comprising a pair of leaves joined about a fold line and extending over opposed sides of the package, comprising the steps of forming pockets containing infusion material in a continuously travelling two-ply porous web;
- passing said porous web through a rotary cutting device having a first speed which forms a transverse cut through sealed regions of the porous web between the pockets to form a plurality of individual infusion packages;
- feeding continuously a web of cover material to a rotary attachment means having a second speed which is synchronized with the cutting device and arranged to attach the packages to the web of cover material at a region adjacent a transverse edge of each package;
- feeding said packages from the rotary cutting device to said attachment means such that at the time the packages are attached to said web of cover material the packages and the web of cover material are travelling at substantially the same speed as that of said attachment means, each package being accelerated either before or immediately after the package is attached to the web of cover material so that a gap is formed between the package and a next package to be attached to the web of cover material;
- and cutting said web of cover material to produce individual lengths of cover material, each having an infusion package arranged towards one end thereof whereby a second end of the cover material may be folded over to enclose the package therebetween.
Apparatus for manufacturing infusion packages provided with a cover comprising a pair of leaves joined about a fold line, comprising a rotary cutting device having a first speed for forming a transverse cut through sealed regions between infusion containing pockets in a travelling two-ply porous web to form a plurality of individual packages;
- rotary attachment means having a second speed synchronized with said cutting device for attaching said packages to a web of cover material at a region adjacent a transverse edge of each package;
- means for continuously supplying said web of cover material to said attachment means;
- means for supplying said packages to said attachment means, such that at the time the packages are attached to said web of cover material the packages and the web of cover material are travelling at substantially the same speed;
- means for accelerating each infusion package either before or immediately after it is attached to the web of cover material so that a gap is formed between it and the next package to be attached to the web of cover material;
- and means for cutting said web of cover material to produce individual lengths of cover material each having an infusion package arranged towards an end thereof whereby a second end of the cover material may be folded over to enclose the package therebetween.
Dependencies are inferred from the claim text.