US2359271A - Method of making packages - Google Patents

Description

Sept. 26, 1944. v

M. H, SIDEBOTHAM METHOD OF MAKING PACKAGES Filed Jan.' 14, 1942 Lu M W my MM I W 0m 5 MM M Patented Sept. 26, 1944 UNITED STATES PATENT OFFICE 2,359,27l

METHOD OF MAKING PACKAGES Melvin H. Sidebotham, Newton, Mass asignor of one-half to Harlow M. Russell, Chelsea,

Mass.

Application January 14, 1942, Serial No. 426,719

4 Claims. (Cl. 93-3) This invention relates to tea'bags, coflee bags been previously treated to have sealing qualities and the like. when subjected to heat and pressure. Figure 2 One object of my invention is to provide a shows the wrapper material with a charge of tea bag with a string attached tag; the bag being tea 4 positioned thereon.

'heat sealed to one end of the string, and the Figure 3 illustrates the several elements, from tag secured to the opposite end of the string by which the complete package is formed, assemfolding the tag about the string and heat sealbled in position prior to the folding and sealing ing the said string within the fold of the tag operations. The sheet of wrapper material I,

Another object of my invention is to provide with the charge of tea positioned thereon, is posia tea bag with string attached tag, so constructed l0 tioned in spaced relation with a flat section of tag that the several elements comprising the commaterial 3. A length of string 2 has one of its plete bag assembly, may be secured together b ends superposed along a mid-portion of the wrapthe application or heat and pressure. per material, I, and the other end of the string 2 A still further object of my invention is to is positioned o lie along the m d-Portion of the provide an improved method for assembling and tag material The tag String 2 y be o y sealing together by a sequence of perations the 7 suitable material such as twisted or braided CDC- several elements comprising a complete tea bag ton it may be made of D Pe Qr er plastic with string attached tag. material.

With said objects in view, my invention com The tag material 3 s P f y ade of thin sists in the improved package and method of Paper cardboard having the u e djacent to making the same substantially as hereinafter dethe string 1 coated i h a mopl stic which scribed and claimed will have adhesive qualities when subjected to 01' the accompanying drawing: heat and P essure- Figure 1 is a plan view of the sheet of wrap- 4 illustrates the condition of the package ping material from which the body of the bag 5 assembly, Shown gafter e pper maorpackageismade. terial and the tag material have been doubled Figure 2 is a plan view of the wrapping mate Over the tag string 2. The folded wrapper 5 thus i l shown in Figure 1, t a charge of the encloses the charge of tea 4; and the folded tag modity to be packaged, in place upon the said 5 has the free end of the in 2 P sitioned wrapping materiaL within the fold of the said tag 6. I

Figure 3 shows string superpbsed upon the The next operation in producing the tea packsheet of wrapping material and upon a section age consists n the pplication of heat and presof paper from which t tag is made sure to the four outside margins I (Fig. 5) of the Fi 4 is plan View of t package assembly folded wrapper 5. The application of heat and after th h t of wrapping material has been pressure serves to adhesively seal together corredoubled over the string and over the commo t p nding margins of the folded wrapper. Thus to b packaged and th t material doubled Over the charge of tea 4 is sealed within the closure t pposite end f the string formed by the folded and sealed wrapper 5. As

Figure 5 illustrates the completed package aft previously noted the wrapper material is preferthe heat sealing operatign has been performed ably made of sheet material which has been Figure 6 illustrates a modified fo of package previously treated to have sealing qualities when wherein one end of the tag string is secured to SubJected wheat and Pressureth outside surface f t bag and the other The operation of sealing the margins l of (Fig.

end f th t i g secured t the urfa f the 5) the folded wrapper 5 also serves to seal one t 4 end of the tag string 2 within the fold of the Figure '7 illustrates the progressive steps in the Wrappermethod of making the bags or packages. The folded tag 6 (Fig. 5), with the free end of Similar reference characters indicate similar the tag String 2 p si i ed Within the d eof part or featur s in ll of th i i is subjected to the application of heat, and the Referring t th drawing Fi 1 is a plan view folds of the tag pressed together. The heat serves 0f the wrapper material I from whi h th body to cause the thermoplastic coating on the canof the bag i m d s id wrapper t l may tacting surfaces of the tag to become tacky, and be made of gauz parchment paper paper d I the application of pressure serves to secure the from hemp pulp, or sheets made from ther contacting surfaces together. The free end of the plastic materials, The wrapper m te i l h uld string 2 is caused to become secured within the be thin and porous, to permit watertopass freely tag b the action Sealing together the contherethrough, and yet have suflicient strength t ing surfaces of the folded tag.

when wet to retain the conte ts. ther i Th The successive steps of the preferred method of wrapper materia may be'of any d r d ty producing my improved package are illustrated however, I prefer a wrapper material that has by '7- A length of string id is positioned to overlie and bisect the wrapper sheet I and the section of tag material 3. The next step in the method of making the package consists in depositing a charge of tea 4 upon a half section of the wrapper m iterial l. The free area of the wrapper material I is then folded along a line parallel with, and adjacent to the string 2a. The said free area of the wrapper material is thus positioned over the charge of tea 4, and doubled against the area of the wrapper material containing the commodity to be packaged.

While the wrapper material is being folded, the

section of tag material 3 is in a like manner the string 2a, is also subjected to heat and pressure which cause the adhesively treated contacting surfaces of the tag to adhere together. The action of sealing the surfaces of folded tag 6 together also serves to secure the string within the fold of the tag material.

The final operation in producing the package consists in severing the string 2a (Fig. 7) at a: between the completed package and the adjacent incompleted package.

Figure 6 illustrates a modification of my invention wherein the tag string 2 is adhesively secured to one of the margins 1 and on the outside of the folded wrapper 5. The tag 3 is not doubled over the free end of the string 2; instead the string 2 is adhesively secured .to an outside surface of the tag. In producing this modified package the string 2 may be treated with a thermoplastic, so that upon the application of heat and pressure the string will adhere to the wrapper material and to the unfolded tag.

While the invention has been described as a tea bag, it will be understood that it may be used to advantage in packaging various substances other than tea. Therefore the invention is not intended to be limited to the packaging of tea.

While I have illustrated the preferred forms of construction and the preferred method of carrying my invention into effect, these are capable of variations and modification without departing from my invention.

Having described my invention, what I claim is:

1. The method of successively making packages with string attached tags comprising positioning a flat sheet of thermoplastically treated wrapper material in spaced apart relation with a flat sheet of thermoplastically treated tag material, depositing a charge of the commodity to be packaged upon a side portion of the wrapper material, positioning a continuous section of tag string to pass through the mid-portion of the wrapper material and through the mid-portion of the tag material, then folding the thermoplastically treated wrapper material along a line parallel with and adjacent to the tag string, to provide a folded wrapper with the said charge of commodity and a portion of the said string within the fold of the wrapper, folding the thermoplastically treated tag material over a portion of said tag string, applying heat and pressure to seal the margins of the folded wrapper and to secure the tag string positioned therein, applying heat and pressure to'seal together contacting surfaces of the folded tag, and severing the tag string from connection with the next succeeding package.

2. The method of successively making packages with string attached tag comprising positioning a flat sheet of thermoplastically treated wrapper material in spaced apart relation with a flat sheet of thermoplastically treated tag material, depositing a charge of the commodity to be packaged upon a side portion of the wrapper material, positioning an intermediate section of tag string to pass through the mid-portion of the wrapper material and through the mid-portion of the tag material, then folding the thermoplastically treated wrapper material along a line parallel with and adjacent to the tag string, to provide a folded wrapper with the said charge of commodity and a portion of the said string within the fold of the wrapper, folding the thermoplastically treated tag material over a portion of said tag string, applying heat and pressure to seal the margins of the folded Wrapper and to secure the tag string positioned therein, applying heat and pressure to seal together contacting surfaces of the folded tag.

3. The method of successively making packages with a string attached tag, comprising singly and successively positionin sheets of thermoplastically treated wrappers spaced apart in contact with a continuous section of tag string, with a tag for each wrapper sheet positioned adjacent to the tag string and in spaced apart relation with l the corresponding wrapper sheet; then singly and successively depositing a charge of the commodity to be packaged upon a portion of each wrapper; singly and successively folding each wrapper along a line parallel with and adjacent to the tag string, to provide a succession of folded wrappers with a charge of commodity and a portion of the tag string within the fold of the wrapper; singly and successively applying heat and pressure to seal together the margin of the folded wrappers and to secure the tag string to each wrapper; then, following the sealing of each wrapper, securing the corresponding tag to the tag string; and singly and successively severing the tagstring to provide packages with string attached tag.

4. The method of successively making packages with a string attached tag, comprising singly and successively positioning wrapper sheets spaced apart in contact with a tag string; a tag for each wrapper sheet positioned adjacent to the tag string in spaced apart relation with the corresponding wrapper sheet; then singly and successively depositing a charge of the commodity to be packaged upon a portion of each wrapper; then singly and successively folding each wrapper to provide a succession of folded wrappers with a charge of commodity and a portion of the tag stning within the fold of the wrapper; singly and successively sealing together the margins of the folded wrappers and securing the tag string to each wrapper; then, following the sealing of each wrapper, securing the corresponding tag to the tag string; and singly and successively severing the tag string to provide packages with string attached tag.

' MELVIN H. SIDEBO'I'HAM.

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