US3485281A

US3485281A - Plastic lined burlap bag

Info

Publication number: US3485281A
Application number: US695645A
Authority: US
Inventors: Charles S Wicks
Original assignee: Chase Bag Co
Current assignee: Chase Bag Co
Priority date: 1968-01-04
Filing date: 1968-01-04
Publication date: 1969-12-23
Anticipated expiration: 1986-12-23

Description

PLASTIC LINED BURLAP BAG Filed Jan. A 1968 FlG.- 4

IN VEN TOR MS. ma@

3,485,281 PLASTIC LINED BURLAP BAG Charles S. Wicks, New Orleans, La., assigner to Chase Bag Company, a corporation of Delaware Filed Jan. 4, 1968, Ser. No. 695,645 int. Cl. 136541 29/02 US. Cl. 150-1 6 Claims ABSTRACT OlF THE DISCLOSURE to secure the liner at the inside edge of the mouth of the bag only.

This invention relates to a plastic lined burlap bag and a method of making the same, and has as its primary object the provision of an improved bag of this nature wherein the liner is loose and free of holes but securely afhxed to the top inside rim of the bag only.

An additional object of the invention is the provision of a lined bag of this character wherein the lining is secured, but is at the same time a separate container free of perforations.

A further object of the invention is the provision of a bag of this character wherein the seams are positioned interiorly of the bag and exteriorly of the lining, thus enhancing the appearance of the bag.

A further object of the invention resides in the process of manufacturing the bag and the steps incident thereto wherein the bag may be manufactured and assembled with a minimum of time, effort and difficulty.

Another object is the insurance of the positive nesting of the liner in every bag.

Still another object of the invention is the provision of a bag of this nature wherein cuffing of the liner is obviated, thus effecting a considerable saving in the relatively expensive liner material and labor costs, as well as in the cost of filling.

Other objects will in part be obvious, and in part be pointed out as the description of the invention proceeds, and shown in the accompanying drawings wherein there is disclosed a preferred embodiment of the inventive concept.

In the drawings:

FIGURE l is a perspective View partially broken away, of a lined bag constructed in accordance with the instant invention.

FIGURE 2 is a fragmentary perspective view of the top portion of the bag per se, showing the positioning of adhesive therein prior to turning of the bag and introduction of the liner.

FIGURE 3 is an exploded plan view of the bag and liner prior to assembly; and

FIGURE 4 is a fragmentary enlarged sectional view taken substantially along the line 4-4 of FIGURE 1 as viewed in the direction indicated by the arrows.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Having reference' now to the drawings in detail, there is generally indicated at a completed bag constructed in accordance with the instant inventive concept. The bag consists of a burlap or plastic covering 11, which is stitched along one side as at 12, and along the bottom nited States Patent O ice as at 13 to form a unitary open-topped structure. Lettering 14 is applied to the outside of the bag, so as to be readily visible. The seams provided by the

stitching

12 and 13 are' formed while the bag is inside out, in a manner to be more fully described hereinafter, so that in the finished article the seam is on the inside of the bag.

Prior to assembly a line of thermoplastic adhesive 15 is formed about the inside of the top edge of the bag extending entirely about the periphery thereof, to which is sealed the open top end 16 of a polyethylene or other suitable plastic liner 17. The liner 17 is formed from a tube as a unit, with its bottom edge sealed in the conventional manner. The liner may also be made from sheeting, in which case the bottom and/or side may be sealed to form the completed liner. Adhesive 15 is activated after liner 17 has been inserted, to insure an effective seal of the top edge Iof the liner to the inside top edge of the bag, no other connection between the bag and the liner being necessary or desirable. By means of this arangement the cuing or turning the upper rim of the liner over the upper edge of the bag, as has hitherto been practiced, is obviated, thus providing a quicleopening container easily filled, and effecting a material saving in the amount of relatively expensive polyethylene material required as a liner for each bag.

In the manufacture of the bag a line of preferably thermoplastic adhesive is extruded along one edge of a sheet of bui-lap or other desired bag material and allowed to harden. The bag is then formed in conventional manner, preferably by suitable machinery, and provided with seams along one side edge and the bottom edge. In manufacture the bag is formed inside out, suitable printing being applied before the stitching operation on what is initially the wrong side of the bag, and the adhesive is then on the outer side. The bag is turned so that the printed matter is on the outside, the liner, also turned inside out, is inserted fully into the turned bag, and the adhesive reactivated. Turning the liner inside out assures positive nesting and freedom from blocking. The top edge of the bag is then pressed firmly into contact with the extruded activated adhesive, heated, and is allowed to dry to insure firm adherence between the top edge of the liner and the top edge of the bag.

If desired, the bag may be made from tubular material in which only the bottom edge need be closed.

Upon completion of the operation there is provided a lined bag with the liner firmly secured only at the inside top edge of the bag, with the seams inside of the bag but exteriorly of the liner, thus enhancing the appearance of the finished article, and with the printing or other indicia on the outside, so as to be readily visible.

From the foregoing it will now be seen that there is herein provided an improved plastic lined bag and a method of making the same lwhich accomplishes all of the objects of this invention and others, including many advantages of great practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodiment herein shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative, and not in a limiting sense.

What is claimed is:

1. In a bag construction, an outer bag of perforate material having an initially open end, a line of adhesive surrounding the inner periphery of the open end, an inner imperforate liner having an open top, said liner being secured inside the outer bag by the attachment of the outer periphery of its open top to said line of adhesive and being unconnected to said bag between said line of adhesive and the bag bottom.

2. The construction of claim 1 wherein the sides and bottom of said outer bag are stitched to form seams and the bag turned prior to insertion and sealing of the liner to position the seams inside the bag.

3. The structure of claim 1 wherein said adhesive is a thermoplastic adhesive.

4. The structure of clairn 1 wherein said outer bag is made of burlap.

5. The structure of claim 1 wherein said inner liner is of plastic.

6. The structure of claim 1 wherein said inner liner is of polyethylene.

References Cited UNITED STATES PATENTS Ellis 229-55 Arkell 229-55 Brady et al. ISO-l Elsas 15G-l Ottinger et al. 15G-l 10 DONALD F. NORTON, Primary Examiner