TW201328859A - Packaging bag and manufacturing method and manufacturing apparatus thereof - Google Patents

Abstract

A method of manufacturing a packaging bag comprises the following steps: preparing an elongated material strip, which has a hollow shape and defines a first long side edge and a second long side edge; hot melting the material strip to form two elongated sealing portions that are spaced from each other, and each elongated sealing portion is connected between the first and second long side edges; folding the material strip so as to form, in between the first and second elongated side edges, three fold lines spaced from each other, and the extending direction of each fold line is the same as the extending direction of the first and second long side edges, so that the material strip is formed of a four folded strip body with four stacked pieces; in the middle of each elongated sealing portion, forming an elongated tear-off line that extends along the longitudinal extending direction of each elongated sealing portion; and forming on the folded strip body of the material strip a segmentation tear-off line located in the middle of the two elongated sealing portions.

Description

Packaging bag, manufacturing method thereof and manufacturing equipment

The invention relates to a packaging bag, a manufacturing method thereof and a manufacturing device, in particular to a reel-type continuous packaging bag, a manufacturing method thereof and a manufacturing device.

In the manufacturing process, the existing reel type continuous plastic bag is a necessary processing step for forming a plastic bag on the plastic material belt in each processing section when processing the plastic material belt. In order to form a predetermined number of plastic bags on the plastic strip, each processing section has to process the plastic strips in the same number of processing as the predetermined number to form a predetermined number of plastic bags on the plastic strip. The manufacturing efficiency of existing manufacturing equipment is not good.

In addition, in the manufacture of the existing plastic bag, the bottom end of the bag body is usually folded first, and then the bottom end of the bag body is sealed by a heat sealing mechanism, so that the bottom of the formed plastic bag has an arc shape. Since the bottom end of the bag of the plastic bag is folded and sealed, the length of the bag body in the up and down direction is reduced, and the space inside the plastic bag for accommodating garbage is small, so the plastic bag is quickly filled. Users need to change plastic bags frequently, in addition to causing waste of resources, but also environmental problems.

An object of the present invention is to provide a method for manufacturing a packaging bag by first heat-sealing two long sealing portions on a tape, and then folding the tape to form a folded tape body in which a plurality of sheets are stacked on each other. The bottom end of the manufactured package body forms a flat sealing portion, thereby preventing the sealing portion from affecting the length of the package body in the vertical direction, thereby affecting the internal space capacity.

Another object of the present invention is to provide a method of manufacturing a package by forming a long tear line in the middle of an elongated seal portion heat-sealed on the tape, and a tape in the middle of two adjacent long seal portions. The split tear is formed on the line, whereby the package can be divided into two package bodies.

The object of the present invention and the prior art problem are solved by the following technical means. The manufacturing method of the packaging bag according to the present invention comprises the following steps:

(A) preparing an elongated strip, the strip is hollow, the strip defining a first long side, and a second long side opposite the first long side;

(B) a hot melt strip to form two elongated seal portions spaced apart from each other, each elongate seal portion being joined between the first and second long sides;

(C) folding the strip to form three fold lines spaced apart from each other between the first and second long sides, each fold line extending in the same direction as the first and second long sides, so that the strip Forming four folded strip bodies stacked on each other;

(D) forming a long tear line extending in the direction extending from the length of each elongate closure portion in the middle of each elongate closure portion;

(E) Forming a split tear line in the middle of the folded strip of the tape in the middle of the two elongated seal portions.

The object of the present invention and solving the prior art problems can be further achieved by the following technical means.

In the step (E), the split tear line comprises a full break line portion which is elongated and has the same extension direction as the tape length direction, and two point break lines respectively connected at opposite ends of the full break line portion, two points The broken portions extend to opposite sides of the folded strip of the strip, respectively.

In the step (B), the long sides of the elongate sealing portions are perpendicular to the first and second long sides.

Another object of the present invention is to provide a manufacturing apparatus for a packaging bag, which can be separated in a processing operation by forming a split tear line on a strip between two adjacent long sealing portions through a dividing point pressing device. Two packaging bags are provided, thereby effectively improving the manufacturing efficiency of the packaging body.

A manufacturing apparatus for a packaging bag according to the present invention comprises a feeding device, a heat sealing device, a folding device, a break point pressing device, and a split point pressing device.

The feeding device is for providing an elongated strip, the strip is hollow; the heat sealing device is arranged on the rear side of the feeding device, and the heat sealing device is used for heat melting the strip to form two spaced apart from each other. An elongate sealing portion; the folding device comprises a first flap located above the heat sealing device for first folding the strip, and a portion spaced above the first flap for second folding of the strip a two-folded plate, and two upper clamping rollers above the second folding plate for clamping the strip; the breakpoint pressing device is disposed on the rear side of the folding device, and the breakpoint pressing device is used in the middle of each elongated sealing portion And pressing the break point along the extension direction of the length thereof; the dividing point pressing device is disposed at the rear side of the breakpoint pressing device, and the dividing point pressing device is used for pressing the dividing point on the strip and at the middle of the two elongated sealing portions.

The dividing point pressing device comprises a lower die, and an upper punch which can be punched toward the lower die, the upper die comprises a cutting blade extending in the front-rear direction, and two point breaking blades respectively connected to the front and rear ends of the cutting blade.

In one embodiment, the first flap is a trapezoidal plate extending obliquely forward and upwardly, and the second flap is a triangular plate extending rearward and obliquely upward, the second flap having an upper tip, two The upper clamping roller is used to clamp the tape passing through the upper tip of the second flap.

In another embodiment, the first flap is a trapezoidal plate extending obliquely forward and upwardly, and the second flap is a triangular plate extending forwardly and upwardly, and the second flap has an upper tip. The two upper clamping rollers are used for clamping the tape passing through the upper tip of the second flap, and the folding device further comprises two lower guiding rollers for guiding the feeding of the tape from the first folding plate to the second folding plate. Rod.

In still another embodiment, the first flap is a triangular plate extending obliquely forward and upwardly, the first flap has an upper tip, the second flap is a triangular plate and has a lower bottom edge, and one is located below The upper end of the opposite end of the bottom edge, the folding device further comprises two lower clamping rollers for clamping the strip passing through the first flap, and one for guiding the strip to be moved by the two lower clamping rollers a lower guiding roller of the lower bottom edge of the bi-folding plate, two lower clamping rollers for clamping the material feeding through the upper tip of the first folding plate, and two upper clamping rollers for clamping through the second folding The top tape of the board.

Another object of the present invention is to provide a packaging bag having a flat sealing portion formed at the bottom end of the packaging bag body, which can prevent the sealing portion from affecting the length of the packaging bag body in the up and down direction, thereby affecting the internal space capacity thereof.

A package according to the present invention comprises a strip, a plurality of elongated seal portions spaced apart from each other, and a plurality of split tear lines.

The tape is elongated and comprises four folded strips which are connected and stacked on each other, and a fold line is formed between each two adjacent folded strips; each elongated sealing portion is heat-sealed to the strip On the folded strip body, each elongate sealing portion is perpendicular to the long side of the strip; each elongate tear is formed in the middle of an elongate sealing portion and extends along the length extension of the elongate sealing portion; The split tear line is formed on the folded strip of the tape and is positioned between every two adjacent elongated seal portions.

Each of the split tear lines includes a full break line portion that is elongated and has the same extension direction as the tape length direction, and two point break portions respectively connected to opposite ends of the full break line portion, and the two point break lines extend to The folded strips of the strip are on opposite sides.

The above-mentioned technical means, the advantage and the effect of the manufacturing method of the packaging bag of the present invention is that the two long-shaped sealing portions are heat-sealed on the tape first, and then the material tape is folded to form a folding in which a plurality of sheets are stacked on each other. The belt body forms a flat sealing portion at the bottom end of the finished packaging bag body, thereby preventing the sealing portion from affecting the length of the packaging bag body in the vertical direction, thereby affecting the internal space capacity. Furthermore, by dividing the pressing point pressing device of the manufacturing device to form a split tear line on the strip between the two adjacent long sealing portions, two packaging bags can be separated in one processing operation, Therefore, the manufacturing efficiency of the package body can be effectively improved.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of FIG. The technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood by the description of the specific embodiments. However, the drawings are only for the purpose of reference and description, and are not intended to limit the invention. .

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

As shown in FIG. 1, it is a first preferred embodiment of the manufacturing method of the packaging bag of the present invention. The packaging bag 1 is of a roll type. In the embodiment, the packaging bag 1 is made of a plastic material.

As shown in FIG. 1, FIG. 2 and FIG. 3, FIG. 3 is a schematic view of the packaging bag 1 after being spread out. The packaging bag 1 comprises a strip 11 having a long shape, a plurality of elongated sealing portions 12 formed on the strip 11 and spaced apart from each other, a plurality of elongated tearing lines 13 formed on the strip 11, and a plurality of strips The split tear line 14 formed on the tape 11 is taken offline. The strip 11 has a hollow shape, and the strip 11 comprises four folded strips 111 connected to each other and stacked on each other, and a fold line 112 is formed between each two adjacent folded strips 111, in this embodiment. Among them, the four folded strip bodies 111 are collectively formed with three folding lines 112, and each two adjacent folded strip bodies 111 are folded around the folding line 112 to be close to each other and stacked. Each of the elongate sealing portions 12 is heat-sealed to the folded strip body 111 of the strip 11, and each elongate sealing portion 12 is perpendicular to the long side of the strip 11. Each of the elongated tear lines 13 is correspondingly formed at an intermediate portion of the elongate sealing portion 12, and each elongate tear line 13 extends along the length extending direction of the elongate sealing portion 12. Each of the split tear lines 14 is formed on the folded strip body 111 of the tape 11 and is positioned between every two adjacent elongated seal portions 12.

Further, each of the split tear lines 14 includes a full break portion 141 that is elongated and has the same extension direction as the length of the strip 11, and two point break portions 142 that are respectively connected to opposite ends of the full break portion 141, two The strip breaking portions 142 extend to opposite sides of the folded strip body 111 of the tape 11, respectively.

As shown in Figures 1, 4, 5 and 6, the strips 11 located therebetween are torn along two adjacent elongated tear lines 13 and the strip 11 is torn away along the split tear line 14. After the two halves are formed, two separate package bodies 10 are formed. Next, the package body 10 can be used after the individual package bodies 10 are turned around the respective folding lines 112 and spread out as shown in FIG.

By dividing the design of the full disconnection portion 141 and the point disconnection portion 142 of the tear-off line 14, the two package body 10 are connected only through the point breakage portion 142, and therefore, as long as they are broken along the point After the wire portion 142 is torn, the two package bodies 10 can be separated, thereby effectively improving the convenience of tearing off the package body 10, so that the user can quickly and conveniently connect the two phases together. The bag body 10 is torn open. Moreover, the extending direction of the full breaking portion 141 through the split tear line 14 is the same as the length of the strip 11, so that the opened bag body 10 forms a body portion 113 for receiving articles, and two pairs are formed on The strap portion 114 on the main body portion 113 on the opposite side of the elongate sealing portion 12, the pair of strap portions 114 can be bundled together by the user to close the opening 115 of the bag body 10, so that the inside of the bag body 10 Items will not be exposed.

The manufacturing method of the packaging bag 1 will be described in detail below:

7 and FIG. 8, FIG. 7 is a flow chart of a manufacturing method of the packaging bag 1 of the present invention, and FIG. 8 is a schematic view of a manufacturing apparatus 200 for manufacturing the packaging bag 1. The manufacturing apparatus 200 includes a feeding device 2 A heat sealing device 3, a folding device 4, a steering device 5, a conveying device 6, a break point pressing device 7, a split point pressing device 8, and a winding device 9. Hereinafter, for convenience of explanation, the right side of the manufacturing apparatus 200 shown in FIG. 8 is referred to as a front end, and the left side of the manufacturing apparatus 200 is referred to as a rear end.

Referring to FIG. 7, FIG. 8 and FIG. 9, in step 101, an elongated strip 11 is prepared. The strip 11 is hollow, and the strip 11 defines a first long side 116, and a first The second long side 117 of the long side 116.

In the present embodiment, the strip 11 is in the form of a roll and is sleeved on a shaft 21 of the feeding device 2, and the plurality of conveying rollers 22 of the feeding device 2 can unwind the roll 11 and will The tape 11 is conveyed to the heat sealing device 3.

Referring to Figures 7, 8, and 10, in step 102, the hot melt strip 11 is formed to form two elongated seal portions 12 spaced apart from each other, and each elongate seal portion 12 is coupled to the first and second long sides 116. Between 117.

The heat sealing device 3 is disposed on the rear side of the feeding device 2, and the heat sealing device 3 includes two heat sealing mechanisms 31 spaced apart from each other. The two heat sealing mechanisms 31 are kept at a distance between the two heat sealing mechanisms 31. The tape 11 is heat-sealed, whereby two long sealing portions 12 spaced apart from each other can be simultaneously heat-sealed on the tape 11. Then, after the tape 11 is moved backward for a predetermined stroke, the two heat sealing mechanisms 31 of the heat sealing device 3 are simultaneously heat-sealed on the tape 11 to seal the other two long sealing portions 12, and the tape 11 is backwards. After moving for a predetermined period of time, the two heat sealing mechanisms 31 of the heat sealing device 3 heat seal two elongated sealing portions 12 spaced apart from each other on the tape 11, so that the tape 11 is heat-sealed reciprocally. operation.

Referring to FIG. 7, in step 103, the strip 11 is folded to form three fold lines 112 spaced apart from each other between the first and second long sides 116, 117. The direction of extension of each fold line 112 is first and second. The long sides 116, 117 extend in the same direction, so that the strip 11 is formed with four folded strip bodies 111 stacked on each other.

Referring to FIG. 8 , FIG. 11 , FIG. 12 and FIG. 13 , the folding device 4 includes a fixing frame 41 , a first folding plate 42 disposed on the fixing frame 41 and located above the heat sealing device 3 , and a fixing frame 41 . And a second folding plate 43 spaced apart from the first folding plate 42 and two upper clamping rollers 44 pivotally connected to the fixing frame 41 and located above the second folding plate 43, wherein the first folding plate 42 is used The first folding of the heat-sealed tape 11 is performed, and the second folding plate 43 is used for folding the tape 11 a second time. The clamping roller 44 is used for clamping the folded tape 11 to Press it into a flat state.

Referring to FIG. 11 , FIG. 12 , FIG. 13 and FIG. 14 , specifically, the first flap 42 of the embodiment is a trapezoidal plate extending obliquely forward and upwardly, and the second flap 43 is facing backward and facing A triangular plate that extends obliquely upwards. The heat-sealed tape 11 is moved upward by the two conveying rollers 45 disposed on the fixing frame 41, and the tape 11 first enters from the front plate surface of the first folding plate 42 and passes through the first folding plate 42 and The gap between the second flaps 43 is wound around the second flap 43 rear panel surface, and then the strip 11 passes through the gap between the two upper crimping bars 44. When the strip 11 passes through the first flap 42, the first long side 116 and the second long side 117 of the strip 11 are folded outward to form two adjacent first and second long sides 116, 117, respectively. Folding line 112 (shown in Figures 3 and 14), when the strip 11 passes through the second flap 43 and moves to an upper tip 431 of the second flap 43, the width of the strip 11 gradually tapers and is at the upper tip. At 431, the folding is completed to form a central folding line 112 (as shown in FIGS. 3 and 14), whereby the strip 11 is folded along each folding line 112 to form four folded strips stacked on each other. 111 (as shown in Figure 14). By first heat sealing the two long sealing portions 12 on the strip 11, and then folding the strip 11 to form a folded strip body 111 in which a plurality of sheets are stacked on each other, the finished package body 10 is formed (Fig. 6). As shown in the drawing, a flat sealing portion is formed at the bottom end thereof after the spreading, thereby preventing the sealing portion from affecting the length of the packaging bag body 10 in the vertical direction, thereby affecting the internal space capacity.

The steering device 5 includes an upper guiding roller 51 pivotally connected to the fixed frame 41, a steering roller set 52 pivotally connected to the fixed frame 41, and a pivoting roller assembly 52 pivotally connected to the fixed frame 41 and located at the steering roller The outer guiding roller 53 on the rear side of the group 52, the strip 11 passing between the two upper clamping rollers 44 will be laterally driven by the upper guiding roller 51 to the steering roller group 52, and the steering roller group 52 will The direction of the transfer belt 11 is moved to move backwards. Finally, the outer guide roller 53 converts the belt 11 into a downward longitudinal movement to guide the folded belt 11 to the conveying device 6 (as shown in the figure). 8)).

Referring to Figures 7, 8, and 15, in step 104, a long tear line 13 extending along the length extension of each elongate closure portion 12 is formed in the middle of each elongate closure portion 12.

The conveying device 6 conveys the folded belt 11 rearward to the breakpoint pressing device 7, and the breakpoint pressing device 7 presses a plurality of mutually spaced portions in the middle of each elongated sealing portion 12 along the length extension direction thereof. The breakpoints enable the breakpoints to collectively form a long tear line 13 wherein the elongated tear line 13 can divide the elongated seal portion 12 into two halves of equal size, thereby tearing along the elongated shape After the strip 13 is torn off the strip 11, the bottom end of the pouch body 10 (shown in Figure 6) has a half of the elongate sealing portion 12.

Referring to Figures 2, 7, 8, and 16, in step 105, a split tear line 14 is formed on the folded strip 111 of the strip 11 intermediate the two elongated seal portions 12.

The dividing point pressing device 8 is disposed on the rear side of the break point pressing device 7, and the dividing point pressing device 8 is used to press the dividing point on the tape 11 and at the middle of the two elongated sealing portions 12, so that the dividing points can be formed together Split tear off offline 14. Specifically, the split point pressing device 8 of the present embodiment includes a lower die 81, and an upper die 82 that can be punched toward the lower die 81. The upper die 82 includes a cutting blade 821 extending in the front-rear direction, and two separate cutters The point breaking blade 822 connected to the front and rear ends of the cutting blade 821 passes through the cutting blade 821 of the upper die 82 and the point breaking blade 822 to press the folded tape body 111 of the tape 11, and the cutting blade 821 is folded in the tape body 111. The upper punching portion forms a full breaking portion 141, and each of the point breaking blades 822 is stamped on the folded belt body 111 to form a point breaking portion 142, whereby the strip 11 can be separated into two by the split tearing line 14. The bag body 10 is packed. The upper die 82 of the split point pressing device 8 separates the two package bodies 10 on the tape 11 in one press working operation, and the manufacturing efficiency of the package body 10 can be effectively improved.

Referring to Figures 2, 7 and 8, in step 106, the strip 11 is wound into a roll.

The tape 11 is wound by a winding device 9 provided on the rear side of the dividing point pressing device 8, so that the tape 11 can be wound into a roll shape as shown in Fig. 1, and at this time, the manufacture of the packaging bag 1 is completed.

As shown in FIG. 17, FIG. 18 and FIG. 19, it is a second preferred embodiment of the manufacturing method of the packaging bag of the present invention, and the manufacturing method thereof is substantially the same as that of the first preferred embodiment, but the structure of the folding device 4 and the folding material The way of belt 11 is slightly different.

In this embodiment, the first flap 42 is a trapezoidal plate extending obliquely forward and upwardly, and the second flap 43 is a triangular plate extending forwardly and upwardly, and the first flap 42 and the second flap The inclination direction of the plate 43 is the same. The folding device 4 further includes two lower guide rollers 46 spaced apart from each other to guide the movement of the tape 11 from the first flap 42 to the second flap 43.

The strip 11 will first enter the front surface of the first flap 42 and be driven by the two lower guide rollers 46 to the front surface of the second flap 43. Then, the strip 11 will pass through the strip. The gap between the upper and lower rollers 44 is clamped by the upper guide roller 51 to the steering roller group 52. When the strip 11 passes through the first flap 42, the first long side 116 and the second long side 117 of the strip 11 are folded inwardly to form two adjacent first and second long sides 116, 117, respectively. Folding line 112 (shown in FIG. 19), when the strip 11 passes through the second flap 43 and moves to the upper end 431 of the second flap 43, the width of the strip 11 gradually tapers and is folded at the upper tip 431. To form a central folding line 112 (as shown in FIG. 19), whereby the tape 11 is folded along each folding line 112 to form four folded strip bodies 111 stacked on each other (as shown in FIG. 19). ).

20, FIG. 21 and FIG. 22 are a third preferred embodiment of the manufacturing method of the packaging bag of the present invention, and the manufacturing method thereof is substantially the same as that of the first preferred embodiment, but the structure and folding material of the folding device 4 The way of belt 11 is slightly different.

In the present embodiment, the first flap 42' is a triangular plate extending obliquely forward and upwardly. The second flap 43 is a triangular plate and has a lower bottom edge 432 and an upper tip at the opposite end of the lower bottom edge 432. 431. The folding device 4 further includes two lower nip rollers 47 for clamping the strip 11 passing through the first flap 42', and a guide strip 11 for moving the two lower nip rollers 47 to the first The lower guide rib 46 of the lower bottom edge 432 of the bi-folding plate 43 is guided.

The strip 11 will first enter from the front surface of the first flap 42'. When the strip 11 passes through the first flap 42' and moves to the upper end 421 of the first flap 42', the width of the strip 11 will gradually shrink. The first fold is completed at the upper tip 421 to form a central fold line 112 (i.e., fold line 112 on the same side as the first and second long sides 116, 117 as shown in FIG. 22). Next, the strip 11 will pass through the gap between the two lower nip rollers 47, and the two lower nip rollers 47 will clamp the strip 11 after the first folding to press it into a flat state. .

Next, the lower guide roller 46 guides the tape 11 to the lower bottom edge 432 of the second flap 43 when the tape 11 passes through the second flap 43 and moves to the upper tip 431 of the second flap 43. The width of the strip 11 will gradually taper and a second fold is completed at the upper tip 431 to form two other fold lines 112 on the same side (as shown in Figure 22), whereby the strip 11 will follow Each of the folding lines 112 is folded to form four folded strip bodies 111 (shown in Fig. 22) stacked on each other. Finally, the strip 11 will pass through the gap between the two upper crimping bars 44, and the two upper crimping rollers 44 will clamp the strip 11 after the second folding to press it into a flat state. The strip 11 after being pinched can be moved to the outer guide roller 53.

In summary, the manufacturing method of the packaging bag 1 of each embodiment is performed by first heat-sealing the two elongated sealing portions 12 on the tape 11, and then folding the tape 11 to form a folded tape body in which a plurality of sheets are stacked on each other. 111, the bottom end of the manufactured package body 10 is formed into a flat sealing portion, whereby the sealing portion can be prevented from affecting the length of the package body 10 in the vertical direction, thereby affecting the internal space capacity. Furthermore, by dividing the point pressing device 8 of the manufacturing apparatus 200, a split tear line 14 is formed on the strip 11 between the two adjacent elongated sealing portions 12, thereby separating two in one processing operation. By packaging the bag body 10, the manufacturing efficiency of the package body 10 can be effectively improved, and the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are still It is within the scope of the patent of the present invention.

1. . . Packaging bag

10. . . Bag body

11. . . Strip

111. . . Folding belt

112. . . Folding line

113. . . Body part

114. . . Bandage department

115. . . Opening

116. . . First long side

117. . . Second long side

12. . . Long seal

13. . . Long tear off line

14. . . Segmentation tearing offline

141. . . Full disconnection

142. . . Point break

200. . . Manufacturing Equipment

2. . . Feeding device

twenty one. . . Shaft

22, 45. . . Transport roller

3. . . Heat sealing device

31. . . Heat sealing mechanism

4. . . Folding device

41. . . Fixed frame

42, 42’. . . First flap

421, 431. . . Upper tip

43. . . Second flap

432. . . Bottom edge

44. . . Upper clamping roller

46. . . Lower guide roller

47. . . Lower clamping roller

5. . . Steering device

51. . . Upper guide roller

52. . . Steering roller set

53. . . Outer guide roller

6. . . Conveyor

7. . . Breakpoint pressing device

8. . . Split point pressing device

81. . . Lower die

82. . . Upper die

821. . . Cutting knife

822. . . Point broken knife

9. . . Winding device

101~106. . . step

1 is a perspective view of a packaging bag according to a first preferred embodiment of the method for manufacturing a packaging bag of the present invention, illustrating that the tape is formed with a split tear line between the two elongated sealing portions;

2 is a top plan view of a packaging bag according to a first preferred embodiment of the method for manufacturing the packaging bag of the present invention;

Figure 3 is a schematic view showing the package of the first preferred embodiment of the method for manufacturing the package of the present invention;

Figure 4 is an exploded perspective view showing the first preferred embodiment of the method for manufacturing the package of the present invention, which is peeled off into two packages;

Figure 5 is a schematic view showing the package body of the first preferred embodiment of the method for manufacturing the package of the present invention;

Figure 6 is a perspective view of the package body of the first preferred embodiment of the method for manufacturing the package of the present invention, showing that the package body is formed with two pairs of strap portions;

Figure 7 is a manufacturing flow chart of a first preferred embodiment of the method of manufacturing the package of the present invention;

Figure 8 is a schematic view of a manufacturing apparatus of a first preferred embodiment of a method of manufacturing a package of the present invention;

Figure 9 is a perspective view of the first preferred embodiment of the method of manufacturing the package of the present invention, illustrating the strip in a hollow shape and forming a first long side and a second long side;

Figure 10 is a partial perspective view of the tape of the first preferred embodiment of the method of manufacturing the package of the present invention, illustrating the formation of two spaced apart elongated closure portions on the tape;

Figure 11 is an enlarged view of the folding device of the first preferred embodiment of the method for manufacturing the packaging bag of the present invention, illustrating that the tape is folded through the first and second flaps;

Figure 12 is a partial enlarged view of the folding device of the first preferred embodiment of the manufacturing method of the packaging bag of the present invention, illustrating the positional relationship between the first and second folding plates, the upper clamping roller and the upper guiding roller ;

Figure 13 is a top plan view of the steering device of the first preferred embodiment of the method of manufacturing the package of the present invention, illustrating the relationship between the detail structure of the steering device and the folding device;

Figure 14 is a partial perspective view of the strip of the first preferred embodiment of the method of manufacturing the package of the present invention, illustrating that the strip is formed with four folded strips stacked one upon another;

Figure 15 is a partial perspective view of the strip of the first preferred embodiment of the method of manufacturing the package of the present invention, illustrating the formation of a long tear line in the middle of each elongated seal portion;

Figure 16 is a bottom plan view of the upper die of the first preferred embodiment of the method of manufacturing the package of the present invention, illustrating that the upper die has a cutting blade and a point cutting knife;

Figure 17 is an enlarged view of the folding device of the second preferred embodiment of the method of manufacturing the package of the present invention, illustrating that the tape is folded through the first and second flaps;

Figure 18 is a partial enlarged view of the folding device of the second preferred embodiment of the manufacturing method of the packaging bag of the present invention, illustrating the first and second folding plates, the lower guiding roller, the upper clamping roller and the upper guiding roller Positional relationship between the rods;

Figure 19 is a partial perspective view of a second preferred embodiment of the method of manufacturing the package of the present invention, illustrating that the tape is formed with four folded strips stacked one upon another;

Figure 20 is an enlarged view of the folding device of the third preferred embodiment of the method of manufacturing the package of the present invention, illustrating that the tape is folded through the first and second flaps;

Figure 21 is a partial enlarged view of the folding device of the third preferred embodiment of the manufacturing method of the packaging bag of the present invention, illustrating the first and second folding plates, the lower clamping roller, the lower guiding roller, and the upper clamping roller Positional relationship between the rod and the upper guide roller; and

Figure 22 is a partial perspective view of a tape of a third preferred embodiment of the method of manufacturing the package of the present invention, illustrating that the tape is formed with four folded tape bodies stacked one upon another.

1. . . Packaging bag

11. . . Strip

111. . . Folding belt

112. . . Folding line

114. . . Bandage department

116. . . First long side

117. . . Second long side

12. . . Long seal

13. . . Long tear off line

14. . . Segmentation tearing offline

141. . . Full disconnection

142. . . Point break

Claims (10)

A method of manufacturing a package, the method comprising the steps of: (A) preparing an elongated strip, the strip being hollowly surrounded, the strip defining a first long side, and a a second long side of the first long side; (B) hot-melting the tape to form two elongated sealing portions spaced apart from each other, each of the elongated sealing portions being coupled to the first and second long sides (C) folding the strip to form three fold lines spaced apart from each other between the first and second long sides, the direction of extension of each of the fold lines and the first and second long sides The extending direction is the same, so that the strip is formed with four folded strip bodies stacked on each other; (D) forming a length extending in the middle of each of the elongated sealing portions along the length extending direction of each of the elongated sealing portions And tearing off the line; and (E) forming a split tear line in the middle of the folded strip of the strip between the two elongated seal portions. The method of manufacturing a packaging bag according to the first aspect of the invention, wherein, in the step (E), the split tear line comprises a full breakage portion which is elongated and has the same extension direction as the length of the tape. And two point breaking portions respectively connected to opposite ends of the full breaking portion, the two point breaking portions respectively extending to opposite sides of the folded belt body of the tape. The method of manufacturing a packaging bag according to claim 1, wherein in the step (B), a long side of each of the elongated sealing portions is perpendicular to the first and second long sides. A manufacturing apparatus for a packaging bag, comprising: a feeding device for providing an elongated strip, the strip is hollow; a heat sealing device is disposed at a rear side of the feeding device, the heat sealing device Used to heat-melt the strip to form two elongate seal portions spaced apart from each other; a folding device comprising a first flap located above the heat seal device for first folding the strip a second flap spaced above the first flap for second folding of the strip, and two upper crimping rollers positioned above the second flap for clamping the strip a break point pressing device disposed on a rear side of the folding device, the break point pressing device for pressing a break point in the middle of each of the elongated sealing portions and extending along a length thereof; and a dividing point pressing device disposed on the The breakpoint pressing device has a rear side pressing device for pressing the dividing point on the strip and at the middle of the two elongated sealing portions. The manufacturing apparatus of the packaging bag according to the fourth aspect of the invention, wherein the dividing point pressing device comprises a lower mold, and an upper punch punched toward the lower mold, the upper punch comprising a slit extending in the front-rear direction Broken knife, and two broken points respectively connected to the front and rear ends of the cutting knife. The manufacturing apparatus of the packaging bag according to the fourth aspect of the invention, wherein the first folding plate is a trapezoidal plate extending obliquely forward and upward, the second folding plate being inclined rearward and upwardly a triangular plate having an upper tip for clamping the strip passing the upper tip of the second flap. The manufacturing apparatus of the packaging bag according to claim 4, wherein the first folding plate is a trapezoidal plate extending obliquely forward and upward, and the second folding plate is inclined forwardly and upwardly. a triangular plate having an upper tip, the two upper clamping rollers for clamping the strip passing the upper tip of the second flap, the folding device further comprising two for guiding the The strip is moved by the first flap to the lower guide roller of the second flap. The manufacturing apparatus of the packaging bag according to claim 4, wherein the first folding plate is a triangular plate extending obliquely forward and upward, the first folding plate having an upper tip, the second folding plate a triangular plate having a lower bottom edge and an upper tip at an opposite end of the lower bottom edge, the folding device further comprising two lower clamping rollers for clamping the tape through the first flap, and a lower guiding roller for guiding the strip to be moved by the two lower clamping rollers to a lower bottom edge of the second folding plate, the two lower clamping rollers for clamping through the first folding The strip of the upper tip of the plate for clamping the strip passing the upper tip of the second flap. A packaging bag comprising: a strip, which is elongated and comprises four folded strips which are connected and stacked on each other, and a fold line is formed between each two adjacent folded strips; The elongated elongate sealing portion, each of the elongate sealing portions is heat-sealed on the folded strip body of the strip, each of the elongate sealing portions being perpendicular to the long side of the strip; the plurality of long strips are torn off, Each of the elongated tear lines is correspondingly formed in the middle of an elongated sealing portion and extends along a length extending direction of the elongated sealing portion; and a plurality of divided tearing lines are offline, each of the divided tearing lines is formed on the folding of the strip The belt body is located in the middle of each of the two adjacent elongate sealing portions. The packaging bag according to claim 9, wherein each of the split tear lines comprises a full break line that is elongated and extends in the same direction as the length of the strip, and two of which are respectively connected to the full break. a point break portion at the opposite end of the line portion, the two point break portions extending to opposite sides of the folded strip body of the strip, respectively.