US3227353A

US3227353A - Carton with handle and pouring spout

Info

Publication number: US3227353A
Application number: US424567A
Authority: US
Inventors: Edward L Bump
Original assignee: IND RES AND DEV CORP
Current assignee: IND RES AND DEV CORP; INDUSTRIAL RESEARCH AND DEVELOPMENT CORP
Priority date: 1965-01-11
Filing date: 1965-01-11
Publication date: 1966-01-04
Anticipated expiration: 1983-01-04

Description

Jan. 4, 1966 E. L. BUMP CARTON WITH HANDLE AND POURING SPOUT 4 Sheets-Sheet 1 Filed Jan. 11, 1965 ATTORNEY Jan. 4, 1966 E. BUMP 3,227,353

` CARTON WITH HANDLE AND POURING SPOUT Filed Jan. 1l, 1965 4 SheelS-Sheei'I 2 47 55 5e 'll 27 uoq) INVENTOR EDWARD L. BUMP ATTORNEY Jan. 4, 1966 E. l.. BUMP 3,227,353

CARTON WITH HANDLE AND POURINGr SPOUT Filed Jan. l1, 1965 4 Sheets-Sheet 5 INVENTOR EDWARD L.BUMP

BYjm M ATTORNEY Jan. 4, 1966 EJmBUMP CARTON WITH HANDLE AD POURING SPOUT 4 Sheets-Sheet 4 Filed Jan. ll, 1965 INVENTOR.

EDWARD L. BUMP ATTORNEY United States Patent O 3,227,353 CARTON WITH HANDLE AND POURING SPOUT Edward L. Bump, Madison, Wis., assignor to Industrial Research and Development Corp., Madison, Wis., a corporation of Wisconsin Filed Jan. 11, 1965, Ser. No. 424,567 4 Claims. (Cl. 229-17) This application is a continuation-in-part of my earlier application S.N. 346,180, led February 20, 1964.

My invention relates in general to cartons made from blanks of sheet material, and more particularly to cartons for liquids and other owable materials which have handles for carrying and pouring, and pour spouts.

The use of cartons made from coated paper products as containers and dispensers has become widespread in recent years, especially, but not exclusively, in connection with various liquid dairy products. However, in spite of their widespread acceptance, such cartons as have existed prior to my present invention have all been subject to one or more disadvantages. tages include lack of a carrying and pouring handle, top construction which is difficult to open and close, pouring spouts which do not effectively limit the flow of liquid from the carton, complex construction which is difficult and expensive to construct and/or which requires excessive material, and other related shortcomings.

Accordingly, it is a primary object of my invention to provide a single-piece carton which has a `spout that discharges the contents of the carton in an easily controlled, smooth flow.

It is another object of my invention to provide a carton with a handle and spout adapted to be formed from a unitary blank and which has means for protecting all portions of the pouring spout which will come in contact with the product during dispensing thereof, from dirt and contamination.

It is a further object of my invention to provide such a carton which has a handle that may be used both for carrying the carton and pouring its contents.

It is a still further object of my invention to provide a carton having a handle `and a limiting pouring spout which is easily and inexpensively manufactured and constrncted from a minimum of sheeting material.

It is vanother object of my invention to provide such a carton which has an improved bottom construction that eiliciently closes the bottom of the carton.

It is an additional object of my invention to provide such a carton which may be constructed from a variety of sheet materials.

Other objects and advantages of my invention will be apparent from the following description, taken in conjunction with the accompanying drawings, wherein a preferred embodiment of the principles of my invention has been selected for exemplication.

In the drawings:

FIG. 1 is a plan view of a blank of sheeting material from which my novel carton is made.

FIG. 2 is a perspective view of my carton as it is originally sealed.

FIG. 3 is a perspective view of my carton when it is unsealed and the spout is closed.

FIG. 4 is a perspective view of my carton with the spout open for pouring.

FIG. 5 is a perspective View of the bottom of my carton with its bottom flaps partially folded to the position in which they close the bottom of the carton.

FIG. 6 is a perspective view of my carton in a partially assembled condition.

FIG. 7 is a top view of my carton in a partially sealed condition in which it is easily lled.

Specifically, such disadvan- FIG. 8 is a fragmentary plan view of a blank of sheeting material comprisinga modified form of my invention.

FIG. 9 is a fragmentary cross-sectional view taken along line 9-9 of FIG. 10.

FIG. 10 is a fragmentary perspective view showing the modified form of my invention in its fully assembled and sealed condition.

Referring more particularly to the drawings, in which like numerals refer to like parts, my novel carton 10 might typically be constructed from plastic coated paper or cardboard for use as a container `for milk or some other pourable liquid or dry material. Preferably made from a single piece of material, the carton 10 has four

walls

11, 12, 13 and 14, a pour spout 15 located at the corner dened by the walls 11 and 14, and a handle 16 usable both for carrying and pouring. The handle 16 extends diagonally from the corner dened by the

walls

12 and 13 toward the corner forming the pour spout 15. The Carton 10 may have either a square or rectangular cross-section. For illustrative purposes only, a carton with a square cross-section is shown in the drawings.

A blank 17 from which the carton 10 may be made is shown in FIG. l. The blank 17 has a top section 18, a wall section 19 and a bottom section 20. A lateral crease 21 separates the top section 18 and the wall section 19, a lateral crease 22 separates the Wall section 19 and the bottom section 20. The

lateral creases

21 and 22 are substantially parallel and run the entire width of the blank 17.

Four wall creases 22, 24, 25 and 26 divide the wall sec tion 19 into an attachment flap 27a and the four

walls

11, 12, 13 and 14. The wall creases 23, 24, 25 and 26 t are substantially parallel, and are substantially perpendicular to the

lateral creases

21 and 22. The middle wall crease 25 and the outer left wall crease 23 run the entire height of the blank 17, while the inner left wall crease 24 and the right wall crease 26 run from the bottom of the blank 17 to the lateral crease Z1. A top crease 27 slightly inclined toward the outer left wall crease 23 runs from approximately the intersection of the inner left Wall crease 24 and the lateral crease 21 to the top of the blank 17. A similar top crease 28 slightly inclined toward the right edge 29 of the blank 17 runs from approximately the intersection of the lateral crease 21 and the right wall crease 26 to the top of the blank 17. The middle wall crease 25, the left outer wall crease 23 and the

top creases

27 and 28 divide the top section 18 into four

top panels

30, 31, 32 and 33. The wall creases 23, 24, 25 and 26 divide the bottom section 20 into

bottom flaps

34, 35, 36 and 37.

The top panels 30 and 33, which are substantially mirror images of each other, are positioned adjacent to each other when the carton 10 is assembled. The top panel 30 has a triangular section 38 and a handle flap 39. The top panel 33 has a corresponding triangular section 40 and a corresponding handle flap 41.

Both

triangular sections

38 and 40 are approximately the same shape. One leg of the triangular section 38 is formed by the lateral crease 21, the second leg is formed by the top crease 27, and the third leg is formed by a crease 42 which separates the triangular section 38 and the handle flap 39. One leg of the triangular section 40 is also formed by the lateral crease 21, the second leg is formed by the top crease 28, and the third leg is formed by a crease 42 which separates the triangular section 40 and the handle flap 41.

The

handle aps

39 and 41 have corresponding nger openings 44.

Finger tabs

45 and 46 preferably project into the nger openings 44 to make gripping of the

handle aps

39 and 41 easier. The

linger tabs

45 and 46 are

foldable valong creases

47 and 48 to provide a support surface for the fingers. Two

creases

49 and 50 extend from a common point on the crease 42 in the handle flap 39 slightly to the rear of the finger opening 44. Corresponding

creases

51 and 52 extend from a common point on the crease 42 in the handle fiap 41 slightly to the rear of the finger opening 44. These

creases

49, 50, 51 and 52,facilitate the filling of my novel carton 10, as will be described more fully as the description progresses.

Like the top panels 30 and 33, the

top panels

31 and 32 are adjacent each other in the assembled carton 10 and are substantially mirror images of each other. The top panel 31 is divided by

inclined creases

53, 54 and 55 into four generally wedge-

shaped sections

56, 57, 58 and 59 which lie side by side like sectors of a circle. Similarly, the top panel 32 is divided by

inclined creases

60, 61 and 62 into four corresponding wedge-

shaped sections

63, 64, 65 and 66. The

inclined creases

53, 54 and 55 extend from the intersection of the wall crease 24 and the lateral crease 21 to the top of the blank 17, while the

inclined creases

60, 61 and 62 extend from the intersection of the wall crease 26 and the lateral crease 21 to the top of the blank 17.

Spout sections

59a and 66a project, respectively, from the corresponding wedge-

shaped sections

59 and 66 to form the spout for my improved carton 10. The

spout sections

59a and 66a are jointed at the middle wall crease 25. Each of the wedge-shaped

sections

59 and 66 has a portion of the lateral crease 21 as one of its sides. A protective lip 67 projects from each of the

spout sections

59a and 66a. A perforated line 68 lying substantially parallel to the top of the lip 67 separates the lip 67 from the

spout sections

59a and 66a, allowing the lip 67 to be easily detached from them. The spout section 59a is separated from the wedge-shaped section 59 by a spout crease 69a which runs from the left end 68a of the scored line 68 to the lateral crease 21, crossing the middle wall crease a suitable distance from the crease 21. The spout section 66a is separated from the wedege-shaped section 66 by a corresponding spout crease 69b which runs from the right end 68b of the scored line 68 to the lateral crease 21, intersecting the spout crease 69a approximately at the middle wall crease 25.

The corresponding wedge-shaped

folding sections

58 and 65 are located adjacent to the wedge-shaped

sections

59 and 66. In the assembled carton v10 the folding section 58 extends between the triangular section 38 and the wedge-shaped section 59, while the folding section 65 extends between the triangular section and the wedgeshaped section 66. Substantially triangular sealing iiaps 70 project from each of the

folding sections

58 and 65. The sealing fiaps 70 are separated from the remainder of the

folding sections

58 and 65 by the creases 71. As shown in the drawings, it is preferable that the sealing aps 70 should not extend to the lateral creases 55 and 62, so that a space 70a is provided between each sealing iiap 70 and the protective lip 67. Such openings 70a facilitate folding of the

folding sections

58 and 65 with respect to wedge-shaped

sections

59 and 66 respectively, along creases and 62.

The remaining wedge-shaped sections are the connecting

sections

56, 57, 63 and 64. The vertex angles of each of the connecting

sections

56, 57, 63 and 64 are substantially equal. Handle engaging tabs 72 project from the blunt end of the connecting

sections

57 and 64. Creases 74 separate the handle engaging tabs 72 from the remainder of the connecting

sections

57 and 64. Creases 74 preferably extend beyond the

creases

54 and 61

separating connecting sections

57 and 58, and 64 and 65, respectively to further separate the handle engaging tabs 72 and the sealing flaps 70, as shown. Small, approximately triangular areas 73, preferably lie between

creases

54 and 74, and between

creases

61 and 74.

Looking at the bottom section 20 of blank 17 in FIG. l, the

inner aps

34 and 36 are the first to be folded in assembling the bottom of the carton 10. The outer bottom -aps 35 and 37 are folded over the

inner aps

34 and 36.

The outer flaps 35 and 37 extend from opposite walls of the assembled carton 10, as do the

inner flaps

34 and 36.

The outer flaps 35 and 37 are approximately rectangular, and are sufficiently large to cover and seal the bottom of the carton 10. Preferably, the

outer corners

87 and 88 of the outer flap are beveled. The inner flap 34 has a pair of substantially congruent

triangular portions

75 and 76. The preferably identical inner flap 36 has a pair of corresponding

triangular portions

77 and 78.

The triangular portion 75 is outlined by the wall crease 23, a folding crease 79 extending from the intersection of the wall crease 23 and the lateral crease 22, and an edge 80 extending from the bottom end of the wall crease 23 to the point where the triangular portion 75 intersects the folding crease 79. The triangular portion 76 is outlined by the wall crease 24, a folding crease 81 extending from the intersection of the wall crease 24 and the lateral crease 22, and an edge 82 extending from the bottom end of the wall crease 24 to the point where the triangular portion 76 intersects the folding crease 81. The triangular portion 77 is outlined by the wall crease 25, a folding crease 83 extending from the intersection of the wall crease 25 and the lateral crease 22, and an edge 84 extending from the bottom end of the wall crease 25 to a point where the triangular portion 77 intersects the folding crease 83. The triangular portion 78 is outlined by the wall crease 26, a folding crease extending from the intersection of the wall crease 26 and the lateral crease 22, and an edge 86 extending from the bottom end of the wall crease 26 to the point where the triangular portion 78 intersects the folding crease 85.

Preferably the

triangular portions

75, 76, 77 and 78 are isosceles, with

edges

80, 82, 84 and 86 and the edges along the folding creases 79, 81, 83 and 85 being equal. As illustrated, the outer corners of the inner flap 34 adjacent the

edges

80 and 82 are preferably cut away to define a tongue 89. The outer corners of the inner flap 36 are similarly cut away to define a tongue 90. The tongues 89 and are sufficiently large to overlap and be secured to each other in the assembled carton 10.

Assembly The first step in the assembly of my carton 10 is to cut and crease a blank 17 of sheeting material as shown in FIG. 1. Next, the blank 17 is folded in half about the middle wall crease 25 to bring the left outer wall crease 23 and the right edge 29 together. The attachment fiap 27a is then secured to the top panel 33, the wall 13 and the bottom liap 37 along the right edge 29, preferably on the inside of the carton 10. If the sheeting material from which the blank 17 is cut is plastic coated paper or all plastic, the ap 27a and all other mating surfaces may be secured by heat sealing. If some other material is used, the flap 27a may be secured with glue or other similar conventional means. The blank 17 is then squared.

The manner in which the bottom aps close the bottom of the carton 10 is best shown in FIG. 5. Together, the

inner flaps

34 and 36 are folded inward toward each other. The folding occurs at the lateral crease 22, and the folding creases 79, 81, 83 and 85. As the inner fiaps 34 and 36 are folded toward each other they pull the outer flaps 35 and 37 inward toward each other. The inwardly collapsing

triangular portions

81 and 83 and outer flap 35, define an envelope into which the free end of outer flap 37 is adapted to slide. Entry of the outer flap 37 into the envelope is facilitated by the beveled

outer corners

87 and 88 of the outer flap 35. The overlapping portions of the outer flaps 35 and 37, the overlapping portions of the

inner aps

34 and 36, and all other required surfaces are then appropriately sealed as indicated above.

The initial steps in assembling the top of the carton 10 are suggested by FIG. 6. First, the connecting flap 63 is folded about the

inclined creases

28 and 60 over the con` necting section 64, thereby matching the top crease 28 and the inclined crease 61. Similarly, the connecting section 56 is folded about the

inclined creases

27 and 53 over the connecting section 57, thereby matching the top crease 27 and the inclined crease 54. Both of these foldings are accomplished substantially simultaneously by folding the

triangular sections

38 and 40 toward each other. The triangular section 38 folds at the top crease 27 and the lateral crease 21; the triangular section 40 folds at the top crease 28 and the lateral crease 21. This folding laps the triangular section 38 over the now matching connecting

sections

56 and 57, and laps the triangular section 40 over the now matching connecting

sections

63 and 64. At this time the connecting section 56 is suitably sealed to con` necting section 57 and to the underside of the triangular section 38, and the connecting section 63 is sealed to connecting section 64 and to the underside of the triangular section 40. The handle engaging tabs 72 are then sealed to the inside of the handle flaps 39 and 41 after which the top of the carton appears substantially as shown in FIG. 7.

The carton 10 is most easily filled in the partially sealed condition illustrated in FIG. 7. A substantial opening to the carton 10 is exposed by spreading apart the handle flaps 39 and 41. The spreading is made easy by the

creases

49, 50, 51 and 52. Those creases are located at the rear of the handle flaps 39 and 41, just about where the top of the attachment flap 27a is attached to the inner surface of flap 41. When spread apart, the

handle aps

39 and 41 fold outward at the

creases

50 and 52, and upward again at

creases

49 and 51. The opening at the spout and between the

spread handle aps

39 and 41 is sufficiently large to permit rapid filling of the carton 10.

After the carton 10 has been filled, sealing of the top of the carton 10 is completed. The handle flaps 39 and 41 are rst pressed against each other to match the

flaps

39 and 41 and the handle engaging tabs 72. The tabs 72 and the matching portions of the handle flaps 39 and 41 are then suitably secured together in the manner indicated above.

The spout 15 and lip 67 are then sealed against the handle 16 in the position shown in FIG. 2 as follows: The

folding sections

58 and 65 are folded about the

inclined creases

55 and 62 and against the inner surface of the wedge-shaped

sections

59 and 66, respectively. The position of the carton 10 after such folding is substantially as shown in FIG. 3, except that the lip 67 is still attached to the spout 16, rather than the handle flaps 39 and 41, as shown. The

folding sections

58 and 65 are of such size, and the handle flaps 39 and 41 are of such length along the

creases

42 and 43 that the lower front corner 91 of the handle 16 presses the sealing flaps 70 against the spout 15 at approximately the intersection of the spout creases 69a and 69b. Thus, the

triangular sections

38 and 40 are not parallel to the bottom of the sealed carton 10, but are inclined slightly upward from lateral crease 21 to the intersection of spout creases 69a and 69h. The spout 15 and the sealing flaps 70, which are folded and sealed against the inner surface of the spout 15 are now folded against and sealed to the handle 16 in the position shown in FIG. 2. The folding occurs along the spout creases 69a and 69b, and the

creases

71, 54 and 61 and 21. The protective lip 67 detachably secured to the spout 15 is also sealed to the handle 16 as shown. If th-e carton 10 is properly sealed as described above, the seal will be hermetic.

The import-ant function of the

folding sections

58 and 65 in opening and closing the spout 15 may now be more fully described. The inclined creases 54 and 61 bordering the

folding sections

58 and 65 are respectively pivotally secured to the

inclined creases

27 and 28 bordering the

triangular sections

38 and 40.

Inclined creases

55 and 62 likewise pivotally join the

folding sections

58 and 65 to the wedge-shaped

sections

59 and 66, respectively. Thus,

6 folding

sections

58 and 65 in effect pivotally link the

triangular sections

38 and 40 to the wedge-shaped

sections

59 and 66.

When the handle 16 is in its lower position shown in FIGS. 2 and 3, the inner surfaces of the

folding sections

58 and 65 are folded against the inner surfaces of the wedge-shaped

sections

59 and 66, and the spout 15 is closed. When the handle 16 is raised to its upper position, shown in FIG. 4, the folding sections 58 :and 65 are extended upwardly from the wedge-shaped

sections

59 and 66, thereby supporting the

triangular sections

38 and 40 in an inclined position, and opening the spout 15. When the handle 16 and

folding sections

58 and 65 are moved back and forth between their upper and lower positions, folding occurs at the lateral crease 21, the

creases

42 and 43, and the

inclined creases

54, 55, 61 and 62.

Use of my carton 10 is convenient and simple. The seal holding the spout 15 against the -handle 16 is rst broken. This is easily done by inserting the thumbs under the downwardly facing

folding sections

58 and 65 and applying an upward pressure. As the

folding sections

58 and 65 are moved upward by the pressure of the thumbs, the spout 15 and the sealing flaps 70 sealed thereto are pulled away from the handle 16 to the position of FIG. 3. As the spout 15 is pulled away from the handle 16, it detaches itself from the protective lip 67 along the perforated line 68, leaving the lip 67 secured to the handle 16. To insure that the lip 67 does remain on the handle 16, the seal between the lip 67 and the handle 16 must be stronger than the perforated connection between the lip 67 and the spout 15. The protective lip 67 insures a sanitary spout by protecting the pouring lip of the spout 15 from dirt or other contamination prior to use.

Once the spout 15 is unsealed, the person pulls the handle 16 upwardly to its upward position thereby pulling the sealing aps 70 away from the inside surfaces of the spout 15 and opening the spout 15 for pouring, as shown in FIG. 4. After pouring the desired amount, the person pushes down on the handle 16 to place the spout 15 in the closed position of FIG. 3. In that position the carton 10 will be closed and its contents protected. V

The advantages of my novel carton 10 are now quite obvious. Its diagonal handle 16 may be used both for carrying and pouring. The Corner-pour spout 15 is carefully designed to have an yopening of limited size that reduces the possibility of spilling or over-pouring. Furthermore, its design utilizes the normal corner construction of the carton as an aid in pouring, thus eliminating a need for special spouts to be constructed on the sides of the carton as commonly required with prior carton construction. The design of the blank 17 is such that the blank 17 may be made of sheet plastic or other synthetic sheeting material, as well as coated or uncoated paper and cardboard.

A modified form of my invention having improved protective means for the pouring spout is shown in FIGS. 8-l0. In this modified form of my invention, when the carton is in its initially sealed condition, all portions of the spout which come in contact with the product during the dispensing thereof are protected from dirt and contamination.

One of the primary differences in my modified form is inthe construction .of protective lip 67 has a generally elliptical configuration and comprises an outer protector portion 67a and an inner sealing portion 67b which is detachably connected to spout

sections

59a and 66a' by a perforated score line 68. The crease 67o divides lip 67 into outer portion 67a and inner portion 671; and vertically extending crease 25 divides it into right and left portions. Outer protector portion 67a' is substantially larger than inner sealing portion 67h so that when the outer protector portion is folded about crease 67C it will completely cover perforated score line 68 and the upper portions of spout sections 59u and 66a'. Protector portion 67a is separated from sealing -aps 70 by cut lines 70a'. Cut lines 70a also define concave locking edges 59b' and 66h on

spout sections

59a and 66a. Inner sealing portion 67b has straight edges 67d. Straight edges 67d and concave locking edges 59h' and 66b will be discussed more fully hereinafter in connection with the assembling and sealing ofthe carton.

It is understood that protective lip 67 is not intended to be limited to -a generally elliptical shape but can take other suitable shapes as Well.

Handle flaps 39 and 41 may also preferably have cut out portions 39a and 41a which are mirror images of each other.

Flaps

39 and 41 have respective protrusions 391) and 41b which extend into cut out portions 39a and 41a', respectively. Protrusions 39b and 41b have upper edges 39C and 41C and lower edges 39d and 41d, respectively. Cut out portions 39a and 41a have edges 39e' and 41e', respectively.

In my modified construction, as shown in FIG. 8, those portions of crease 21 defining the top edge of panels 11 and 14 are inclined to the horizontal so that when the carton is in its assembled and sealed condition the top edges of panels 11 and 14 will be in juxtaposition with creases 27 and 28', respectively.

The bottom of blank 17 is identical to the bottom of blank 17 shown in FIG. l.

Modied assembly The assembly of my modified carton 10 will now be discussed insofar as it differs from carton 10 shown in FIGS. 1-7.

The first step in the assembly of my modified carton 10 is, of course, to cut and crease a blank 17 of paperboard as shown in FIG. 8. Next, the outer protector portion 67a of protective lip 67 is folded about crease 67C to overlie the outside of inner sealing portion 67 b and these portions are then heat-sealed together. The blank 17 is then formed into a fiat shell in the same manner as carton 10. The carton 10 is then ready to be shipped to the user as a at shell.

To put the carton 10 into use, the user first squares the carton and forms and seals the bottom in a manner identical to that discussed in connection with carton 10.

The initial steps in assembling the top of carton 10 and filling it are also substantially identical to those steps discussed in connection with carton 10.

After the carton 10 has been filled, the sealing of the top is completed. The handle flaps 39 and 41' are first pressed against each other to match

flaps

39 and 41 and the handle engaging tabs 72', and the tabs 72 and the matching portions of handle flaps 39 and 41 are heatsealed together.

The spout and protective lip 67 are then sealed against the handle as follows: The folding sections 58' and 65 are folded about the

inclined creases

55 and 62 and against the inner surface of wedge-shaped sections 59 and 66', respectively. When this fold has been completed the parallel and

overlying creases

27 and 54', and 28' and 62 are in respective juxtaposition with those portions of crease 21 defining the inclined top edge of panels 11 and 14. Also, creases 71 are in juxtaposition with creases 69a and 69h', respectively. The sealing flaps 70 are sealed to the inner surface of

spout sections

59a and 66a in fluid-tight relation. The

upstanding folding sections

58 and 65 and wedge-shaped sections 59' and 66 are then folded backwards about their respective creases causing the sealing flaps 70,

spout sections

59a and 66a', and inner sealing portion 67b of lip 67 to be brought into contact with handle 16. As shown in FIG. 9, the sealing flaps 70 and

spout sections

59a and 66a are brought into such a position that the concave locking edges 59b and 66h engage the lower locking edges 39d and 41d of protrusions 39b and 41b, respectively. The sealing lip 67 is brought backwardly to such a position that the flat edges 67d of inner sealing portion 67b en gage edges 39C and 41c' of protrusions 3912 and 41b.

The rear ends of the common edge defined by crease 67C' between inner sealing portion 67b and outer protective portion 67a are engaged by edges 39e' and 41e of cut out portions 39a and 41a. Heat and pressure are then applied to the

spout sections

59a and 66a and to the protective lip 67, thus, sealing the sealing flaps 70',

spout sections

59a and 66a and the inner sealing portion 67b of lip 67 to the handle 16. The inner sealing portion 67b of lip 67 is also sealed to itself in the area of cut outs 39a and 41a, thus providing a strong attachment for protective lip 67. The carton is now hermetically sealed against leakage.

It is readily apparent that in its closed and sealed condition the outer protector portion 67a of lip 67 completely covers perforated score line 68 which defines the pouring edge of the spout 15 as well as all other portions of the spout which will come in contact with the product during the dispensing thereof. The spout is, therefore, protected from dirt and contamination.

The modified carton 10' may be opened, used, and reclosed in substantially the same manner discussed hereinbefore in connection with carton 10.

It is understood that my invention is not confined to the particular construction and arrangement of parts illustrated and described, but embraces all such modified forms thereof as come within the scope of the following claims.

I claim:

1. A carton for fiowable materials comprising:

(a) a bottom,

(b) a first, a second, a third and a fourth wall, said first and fourth walls being 4substantially parallel, and said second and third walls being substantially parallel,

(c) first and second wedge-shaped sections projecting upwardly from said first and second walls, respectively,

(d) a pair of spout sections projecting from said wedgeshaped sections and being joined to define a spout extending from the corner of said carton formed by said first and second walls,

(e) a first folding section pivotally connected to said first wedge-shaped section and a second folding section pivotally connected to said second wedge-shaped section,

(f) a first triangular section pivotally connected to the top of lsaid third wall and to said first folding section, and a second triangular section pivotally connected to the top of said fourth wall and to said second folding section, said first and second triangular sections having mating diagonal edges,

(g) corresponding handle flaps projecting from said diagonal edges of said triangular sections, said handle flaps being secured to each other to form a handle for said carton,

(h) said handle and said triangular sections having an upper position wherein said folding sections extend upwardly from said wedge-shaped sections to open said spout and a lower position wherein said triangular sections cover the top of said carton and said folding sections are folded downwardly against said wedge-shaped sections to substantially close said spout, and

(i) a protective lip having an inner portion detachably secured along a perforated score line to said spout sections and an outer portion overlying said perforated score line, said protective lip being sealed to said handle.

2. A single-piece blank for a four-walled carton, said blank comprising:

(a) a top section, a bottom section and a wall section,

(b) a first crease dividing said top section from said wall section, and a second crease dividing said wall section from said bottom section and being substantially parallel to said first crease, said first and second creases extending for the full length of said blank,

(c) a left wall crease, a middle wall crease and a right wall crease dividing said wall section into four Walls, said Wall creases being substantially perpendicular t-o said first crease and extending for the full height of said blank,

(d) said three Wall creases dividing said bottom section into a rst, a second, a third and a fourth bottom flap adapted to form the bottom of the carton, and dividing said top section ino a first, a second, a third and a fourth top panel adapted to form the top of the carton, said first and second top panels and said third and fourth top panels to be adjacent in the completed carton,

(e) said third and fourth top panels having corresponding triangular sections and handle flaps,

(f) each of said triangular sections having one side formed by said rst crease, a second side formed by a wall crease, and a diagonal side,

(g) a pair of corresponding handle flaps extending from said diagonal sides in pivotable relation and being adapted to be secured together to form a handle for the completed carton,

(h) said rst and second top panels each being divided by three inclined creases into corresponding first, second, third and fourth wedge-shaped sections, each of said iirst wedge-shaped sections having one side formed by a wall crease forming one side of a triangular section, and each of said fourth wedge-shaped sections having one side formed by a part of said first crease,

(i) spout sections projecting from said fourth wedgeshaped sections of said rst and second top panels and being secured together along the middle Wall crease separating said rst and second walls to define a spout for the completed carton,

(j) said third wedge-shaped sections being folding sections adapted to movably link said fourth wedgeshaped sections and said triangular sections,

(k) said rst and second wedge-shaped sections being connecting sections adapted to be folded together and t-o be secured to said triangular sections to connect said third Wedge-shaped sections and said triangular sections in abutting relation,

(l) a handle engaging tab pivotally secured to each of said second Wedge-shaped sections and being adapted to be secured to said handle flaps,

(m) a sealing flap pivotally secured t each of said third wedg-shaped sections and being adapted to be secured to said adjacent spout sections and said handle flaps,

(n) a protective lip having an inner portion detachably secured along a perforated score line to said spout sections and an outer portion adapted to overlie said perforated score line, said protective lip being adapted to be sealed to said handle flap,

(o) said spout sections and said sealing aps being adapted to dene a spout opening for said completed carton.

3. A blank as specified in claim 2 wherein said handle flaps have cut-out portions therein for permitting vsaid protective lip to be sealed to itself in the area of said cut-out portions.

4. The blank as specified in claim 2 wherein said handle flaps have cut-out portions therein adapted to receive a portion of said spout sections and permitting said protective lip to be sealed to itself in the area of said cut-out portions.

References Cited by the Examiner UNITED STATES PATENTS Re. 25,532 3/1964 Asman 229-17 2,810,508 10/ 1957 Braunstein 229-17 X 2,900,124 8/1959 Leone 229-52 2,916,195 12/ 1959 Gatward 229-52 3,147,904 9/ 1964 Larson 229-17 JOSEPH R. LECLAIR, Primary Examiner.

Claims

1. A CARTON FOR FLOWABLE MATERIALS COMPRISING: (A) A BOTTOM, (B) A FIRST, A SECOND, A THIRD AND A FOURTH WALL, SAID FIRST AND FOURTH WALLS BEING SUBSTANTIALLY PARALLEL, AND SAID SECOND AND THIRD WALLS BEING SUBSTANTIALLY PARALLEL, (C) FIRST AND SECOND WEDGE-SHAPED SECTIONS PROJECTING UPWARDLY FROM SAID FIRST AND SECOND WALLS, RESPECTIVELY, (D) A PAIR OF SPOUT SECTIONS PROJECTING FROM SAID WEDGESHAPED SECTIONS AND BEING JOINED TO DEFINE A SPOUT EXTENDING FROM THE CORNER OF SAID CARTON FORMED BY SAID FIRST AND SECOND WALLS, (E) A FIRST FOLDING SECTION PIVOTALLY CONNECTED TO SAID FIRST WEDGE-SHAPED SECTION AND A SECOND FOLDING SECTION PIVOTALLY CONNECTED TO SAID SECOND WEDGE-SHAPED SECTION, (F) A FIRST TRIANGULAR SECTION PIVOTALLY CONNECTED TO THE TOP OF SAID THIRD WALL AND TO SAID FIRST FOLDING SECTION, AND A SECOND TRIANGULAR SECTION PIVOTALLY CONNECTED TO THE TOP OF SAID FOURTH WALL AND TO SAID SECOND FOLDING SECTION, SAID FIRST AND SECOND TRIANGULAR SECTIONS HAVING MATING DIAGONAL EDGES, (G) CORRESPONDING HANDLE FLAPS PROJECTING FROM SAID DIAGONAL EDGES OF SAID TRIANGULAR SECTIONS, SAID HANDLE FLAPS BEING SECURED TO EACH OTHER TO FORM A HANDLE FOR SAID CARTON, (H) SAID HANDLE AND SAID TRIANGULAR SECTIONS HAVING AN UPPER POSITION WHEREIN SAID FOLDING SECTIONS EXTEND UPWARDLY FROM SAID WEDGE-SHAPED SECTIONS TO OPEN SAID SPOUT AND A LOWER POSITION WHEREIN SAID TRAINGULAR SECTIONS COVER THE TOP OF SAID CARTON AND SAID FOLDING SECTIONS ARE FOLDED DOWNWARDLY AGAINST SAID WEDGE-SHAPED SECTIONS TO SUBSTANTIALLY CLOSE SAID SPOUT, AND (I) A PROTECTIVE LIP HAVING AN INNER PORTION DETACHABLY SECURED ALONG A PERFORATED SCORE LINE TO SAID SPOUT SECTIONS AND AN OUTER PORTION OVERLYING SAID PERFORATED SCORE LINE, SAID PROTECTIVE LIP BEING SEALED TO SAID HANDLE.