Special receptacle or package – For mixing
Patent
1982-11-18
1985-09-10
Moy, Joseph Man-Fu
Special receptacle or package
For mixing
383 38, 383 40, B65D 2508
Patent
active
045400890
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention concerns the packaging of materials which are to be mixed with a liquid to form a mixture. Many such materials are known, e.g. dry mortar in pulverulent form, plaster powder, and food or beverage making mixture such as a cake mixture, and such material is hereinafter referred to as "a material for mixing".
BACKGROUND ART
The mixing of such a material with a liquid is often a messy proceeding, involves the subsequent cleaning of the surface or receptacle and the implement used to perform the mixing, and sometimes involves the risk of spillage of the material or mixture causing damage; and an object of the invention is to enable these disadvantages to be reduced or obviated.
Furthermore, the mixing of such a material with a liquid usually requires a predetermined or selected amount of the material to be mixed with a predetermined or proportionate amount of liquid, the latter, at least, having to be measured by the user. The measuring operation is often inconvenient to perform and is sometimes omitted by persons who estimate or guess the amount of liquid to the possible detriment of the performance of the mixture produced, and an object of the invention is to enable this inconvenience to be reduced or obviated.
DISCLOSURE OF INVENTION
According to the present invention there is provided a bag containing material for mixing within the bag, wherein the bag is formed from flexible waterproof film material so that there are within the bag a compartment and a pocket, the material for mixing being contained within the compartment; characterised in that insertion of liquid into the pocket; and the mouth to provide a seal therebetween; to serve as a measure, and at least a portion of the pocket is frangible to allow the pocket to be ruptured to discharge measured liquid into the compartment, and in that serve as a non-return valve obstructing the passage of liquid and material to the mouth, so as to permit the bag to retain the contents during mixing thereof by manipulation of the bag.
The provision of the pocket enables liquid to be measured easily, and provides means for carrying the liquid from the point of supply to the place whereat the liquid material are to be mixed and the mixture used. Furthermore, the pocket serves, before being ruptured, as a seal between the mouth and the interior of the bag, to exclude atmospheric moisture from said material.
According to the present invention there is also provided apparatus, for making bags, comprising feeding means and bonding means, the feeding means being arranged to feed a plurality of films of waterproof thermoplastics material through the bonding means, and the latter being arranged to form bonds between said films, wherein the bonding means comprises confronting members disposed at opposite sides of a web transit path therebetween, which members are mounted so that the spacing therebetween can be varied to cause the members to abut webs of said films located in said web transit path, the apparatus being characterised in that a web separator member is provided in said web transit path between at least portions of two of said confronting members to separate portions of adjacent webs to prevent bonds being made to those surfaces of said portions which abut the web separator whilst allowing bonds to be made to the other surfaces of said portions at each side of the web separator by said at least two portions for forming mouths for the bags.
The present invention also provides a method of making bags from films of thermoplastic material, wherein a plurality of webs of said films are superimposed upon each other and are fed along a web transit path between confronting members of bonding means, characterised in that portions of adjacent webs are spaced apart to prevent bonds being made between said spaced apart portions of two of said webs as said bonding means is actuated to form bonds between said portions of said webs and others of said webs.
The bag is preferably formed so that the walls of said pocket are formed from a single
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Fidei David T.
Johnsen & Jorgensen Jaypak Limited
Man-Fu Moy Joseph
Markva Neil F.
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