KR101949778B1 - The vinyl bag that pressure is discharged - Google Patents

Abstract

The pressurized-release vinyl packaging pouch of the present invention comprises a first body forming a vinyl-sealed inner space and a heat-sealed portion integrally fusing a part of an edge of the second body; And is formed in a part of the heat-sealed portion and has a width smaller than that of the heat-sealed portion, and has a length of 1 to 2 mm and a length of 30 to 50 mm which share the end portion of the outer edge and the end of the outer edge of the heat- A pressure evacuation portion; An outflow portion formed in the heat-sealed portion formed by the pressure-evacuating portion and configured in a bottleneck shape having a smaller length from the inside to the outside; A fusion safety part formed at a position where the outlet part is constituted and formed in a straight line at the inner end of the heat-sealed part, and the first body and the second body are thermally fused with a dotted line of 0.5 to 1 mm in width and 2 to 6 mm in length; When the pressure of the inner space is increased, the pressure exhaust part is opened safely by itself, and a tool such as a scissor is not required to open the seal part. If the user does not directly cut the cut part by hand, There is an effect such that the pressure to concentrate on the first is relaxed.

Description

[0001] The present invention relates to a vinyl bag,

The present invention relates to a pressurized discharge plastic packaging bag, and more particularly, to a pressurized discharge plastic packaging bag which comprises a pressure evacuating unit which is thermally fused to a thermally fused portion of a body edge to fill a filling material, Which is opened prior to the additional thermally fused portion and is capable of consuming the filling material without a large pressing force.

Generally, a sealed vinyl packaging pouch is a bag in which a space is formed by thermally fusing two or three edges of various kinds of known vinyl compounds such as polypropylene (PP) and polyethylene (PE).

The sealed plastic packaging pouches are divided into various types such as pouches and self-sealing vinyl plastic pouches depending on their use, and packaging and storage of liquid or gel-like packing materials such as beverages, detergents, fabric softeners, miso, and kochujang .

 Such sealed plastic packaging pouches are used as refillable containers in place of glass bottles, cans and plastic containers because they are easy to carry and have a low packaging cost.

In a pressurized discharge pouch (May 25, 1999) of Korean Patent Laid-Open Publication No. 1999-0037893, a discharge port having an inclined surface at one side of an upper sealing portion is formed, and a side surface A protruding portion is formed on the inner side of the sealing portion and a body sealing portion is formed on the lower diagonal direction about the outlet.

There is a problem that the above-mentioned prior art artificially incarnates the cut-out portion formed at the upper end of the discharge port for ingesting the filled filling or for use.

In addition, in the above-described prior art, there is a problem that a separate cutting means such as a scissors or a knife is used to cut the cut portion, or the user must directly cut the cut portion by hand.

In addition, when the user directly cuts the cut portion by hand, the above-mentioned related art has a problem that the cut-out operation is relatively difficult and the cut-out portion is not cut properly, and the cut-out portion is not smoothly cut.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a sealing plastic bag, such as a plastic packing bag or a pouch, And is formed in a welded portion formed in a heat fusion portion composed of a pressure evacuation portion and a pressure evacuation portion which are thermally welded at a width of 1 to 2 mm and a length of 30 to 50 mm smaller than the width of the heat fusion portion, And an object of the present invention is to provide a pressurized and discharged plastic packaging bag which can be safely opened and sealed by itself without a large pressing force when the internal pressure of the body increases.

The present invention provides a pressurized discharge plastic packaging bag comprising a first body forming a plasticized and sealed inner space and a heat-sealed portion integrally fusing a part of an edge of the second body; A pressure evacuating part which is constituted in a part of the heat fusion part and has a width smaller than that of the heat fusion part and which is thermally fused with a width of 1 to 2 mm which shares the end of the outer edge and the outer edge of the heat fusion part; And an outflow portion formed in the heat-sealed portion formed with the pressure-evacuating portion and formed in a bottleneck shape having a smaller length from the inside to the outside.

Further, in the present invention, the pressure exhaust part is thermally fused to a length of 30 to 50 mm that shares an inner space.

In addition, the present invention further comprises a fusion safety part which is formed at a position where the outlet part is constituted and which is formed straight on the inner end of the heat-sealed part, and the first body and the second body are heat-

Further, in the present invention, the fusion-welding safety part is thermally fused with a width of 0.5 to 1 mm and a length of 2 to 6 mm.

Further, in the present invention, the pressure evacuation portion is thermally fused by a sealing bar having a thermal fusing relieving gap of 10 to 50 μm more than the heat fusing portion.

The pressure-extinguishing plastic packaging bag of the present invention has an effect that when the pressure of the inner space is increased, the pressure-evacuating portion itself is safely opened.

In addition, since the pressure evacuating unit is opened by the pressure of the inner space, a separate tool such as a knife or scissors is not required for opening the cutout, and the user does not need to cut the cutout by hand.

In addition, since the present invention does not need to form the perforated line of the cutout portion, the step of forming the perforated line by the cutout cutter is omitted, so that the productivity is improved and the manufacturing cost is low.

In addition, according to the present invention, when the pressure of the inner space is increased, there is an effect that the pressure at which the fusion safety part concentrates on the pressure exhaust part is firstly relaxed.

In addition, the present invention has an effect of guiding the pressure of the internal space to the pressure discharge unit.

Further, according to the present invention, when the filling material is filled in the inner space by the fusion-bonding safety part, the filling material is filled in the straight line in the heat-welding part, and the appearance of the plastic packing bag is good.

In addition, since the viscous filling material and the self-supporting type plastic packing bag in the plastic packing bag are heated in the microwave oven, the pressure discharging portion is opened first, so that the filling material can be heated.

1 is a perspective view of a pouch and a plastic packaging bag constructed according to the present invention;
2 is a state diagram of the pressure exhaust part of the present invention.
Fig. 3: Open state diagram of a pouch constituted by the present invention. Fig.
Fig. 4: Opening flow diagram of a pressure evacuation part in which the present invention is constructed. Fig.
Fig. 5 is a state in which a pouch having protrusions to which the present invention is applied is used. Fig.
6 is a cross-sectional view of a sealing bar for thermally fusing the pressure exhaust part of the present invention.
Fig. 7 is a perspective view of a heat fusing device and a cooling device to which the present invention is applied.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 7 attached hereto.

Fig. 1 (a) is a perspective view of a pouch in which the present invention is constituted and a protruded portion is formed, and Fig. 1 (b) is a perspective view of a self-contained, sealed vinyl packaging bag constituted by the present invention. A pouch-type plastic packaging bag (10) comprising a superimposed packaging film and including a heat-sealed portion (20) formed on the edge of the body (30) by partially or entirely fusing the edges of the overlapped packaging film and a self- The present invention can be applied to the packaging pouch 10 'and the like.

The pouch-shaped plastic packaging bag 10 of FIG. 1 (a) is composed of a first body 30-1 and a second body 30-2. The first body 30-1 and the second body 30-2 And a body 30 having an inner space of a predetermined size formed by the body 30-2. The body 30 of the pouch-shaped plastic packaging bag 10 may include a protrusion 40 at a specific position or corner or may not be formed in the protrusion 40 in order to open the inner space simply and conveniently .

The first body 30-1 and the second body 30-2 of the pouch-shaped plastic packaging bag 10 have the same size and shape and are positioned to face each other and form an enclosed inner space by mutual engagement And the inner space is used as a place for stably accommodating and storing the filling material e such as drinks.

The self-contained vinyl packing bag 10 'of FIG. 1 (b) is composed of a first body 30-1 and a second body 30-2 which are configured before and after, and a side body and bottom portions formed on both sides, The bottom body is constituted.

The closed-type closed-plastic packaging pouch 10 'is formed by folding a bottom portion of a cylindrical vinyl tube of a predetermined length into a square shape and sealing it by thermal fusion to a superimposed portion to form a bottom body, And the folded upper part is positioned inside the body so that the edge of the folded upper part and the upper edge of the first body 30-1 and the upper edge of the second body 30-2 are thermally fused at the same time, (20).

The upper end of each of the side bodies, the first body 30-1 and the second body 30-2 is sealed to form an inner space, and the inner space is sealed with a beverage or the like And is used as a place for stably accommodating and storing the filler (e). The self-supporting type sealed plastic packaging pouch 10 'has a larger internal space than the pouch type, and a lower portion thereof is wider than an upper portion thereof, thereby stably becoming independent.

Materials such as the pouch-shaped plastic packaging pouch 10 and the self-supporting type sealed plastic packaging pouch 10 'are used as various kinds of known vinyl compounds such as polypropylene (PP) and polyethylene (PE).

The structure and the shape of the body of the sealed plastic packaging pouches 10 and 10 'can be appropriately changed according to the use of the plastic packaging pouches 10 and 10', and the sealing part of the body 30, It is possible to selectively adopt various known methods within a range that can effectively seal the internal space.

The thermally fused portion 20 is thermally fused to the edge of the body of the body 30 formed by overlapping the first body 30-1 and the second body 30-2. The heat-sealed portion 20 includes packaging films facing each other, that is, a first body 30-1 and a second body 30-2 or a first body 30-1, a second body 30-2, The bottom body and the side bodies are coupled to each other by heat sealing to form a closed internal space.

The pouch-type sealed plastic packaging pouch 10 is formed with a thermally fused portion 20 formed by thermally fusing four edges of the pouch-shaped sealed plastic packaging pouch 10, and a portion of an upper edge and a bottom portion of the pouch- The heat-sealed portion 20 is formed. The thermally fused portion 20 for the self-standing sealed plastic packaging bag 10 'is not absolute and may be changed to a portion of the upper edge and side portion depending on the production of the sealed plastic packaging pouch.

The protruding portion 40 of the pouch-shaped sealed plastic packaging bag 10 is formed by protruding one side of the heat-sealed portion 16 in the outward direction, and one side of the inner surface of the sealed plastic packaging bag 10, It is preferable that the shape of the bottle becomes a bottleneck having a length longer than the width while being configured to be communicated, and that the packing (e) in the inner space can easily flow out at the edge of the sealed plastic packaging bag (10). Another reason for configuring the protrusion 40 at the edge of the plastic bag 10 is to make it better for the person to take the filling material e in the plastic bag 10 '.

The protruding portion 40 is integrally formed with the inner space and communicates with the inner space to be used as a passage for discharging the filling material e filled in the inner space to the outside. The first body 30-1 and the second body 30-2 are spaced apart from each other because the second body 30-2 is not thermally fused.

The projecting portion 40 of the pouch-shaped sealed vinyl packaging pouch 10 can be formed at the edge of the plastic packing bag 10 and can be formed at the center of the upper heat-sealed portion 20, And is not particularly limited.

The present invention comprises a heat sealed portion 20, a pressure evacuating portion 60, an outlet portion 50, and a fusion safety portion 70 in a sealed vinyl packing bag 10, 10 'made of an overlapped packaging film.

The present invention is characterized in that it comprises a pressure evacuation part (60) constituted in a part of a heat seal part (20) and having a width smaller than that of the heat seal part (20), an outflow part (50) When the pressure of the inner space of the plastic packaging bag 10 or 10 'is increased, the pressure discharge part 60 is first opened by itself and the pressure discharge part 60 is opened safely .

In the present invention, the pressure evacuating portion 60 is constituted in the heat-sealed portion 20 of the protruding portion 40 in the pouch-shaped sealed vinyl packing bag 10 in which the protruding portion 40 is formed, And the constitution of the heat-sealed portion 20 is limited.

The heat-sealed portion 20 integrally fuses the edges of the first body 30-1 and the second body 30-2, which are made of vinyl and form a closed inner space. The whole or a part of the edges of the first body 30-1 and the second body 30-2 can be fused so that the first and second bodies 30-1, -2), or a part of the edges.

 In the case where the thermally fused portion 20 is formed on a part of the edges of the first body 30-1 and the second body 30-2, both side surfaces of the pouch-shaped sealed plastic packaging bag 10, except the bottom surface thereof, Or in a stand-alone closed plastic packaging bag 10 'on the upper surface excluding the bottom surface and both side surfaces.

The heat fusion portion 20 is formed by the simultaneous action of the heating device 80 and the cooling device 90. The heat fusion portion 20 is formed by the heating device 80 and the cooling device 90 So that the edges of the film material forming the body 30 to be transported between the heating device 80 and the cooling device 90 are heated and cooled.

The heating device 80 includes a sealing bar 81, an elevating means 82, a heating frame 83 and a heating means 84. The sealing bar 81 conveys the film material forming the body 30 And a sealing bar 81. The sealing bar 81 is formed by heating a film material forming the body 30. [ The heating frame 83 is connected to the sealing bar 81. The elevating means 82 is coupled to both ends of the heating frame 83 and the heating frame 83 is mounted on the elevating means 82 to elevate the sealing bar 81 .

The sealing bar 81 is a two-step rod-like shape in which a narrowly protruding portion is in contact with a film material forming the body 30 and a wide portion is bonded to the heating frame 83. The heating means 84 is formed inside the sealing bar 81. The heating means 84 is composed of a heating wire that generates heat by current flow and heats the sealing bar 81 to form a body 30 that will ultimately become a packaging pouch The film material is heated so that the film material is thermally fused.

The cooling device 91 includes a cooling bar 91, a cooling frame 92 and a cooling device 93. The cooling bar 91 is configured to correspond to the sealing bar 81, (91) and cooling the cooling bar (91).

The cooling bar 91 has a rectangular parallelepiped shape and one side is in contact with the film material forming the body 30 and the back side is coupled to the cooling frame 92. The cooling means 93 is disposed inside the cooling bar 91 Which uses oil or water. The cooling frame 92 is coupled to the cooling bar 91 in the form of a rectangular parallelepiped and the other side thereof is coupled to the bed of the plastic packaging bag producing apparatus.

The pressure evacuating portion 60 is formed in a part of the heat fusion portion 20 and is configured to have a smaller width than the heat fusion portion 20 and shares the end of the outer edge and the outer edge of the heat fusion portion 20, (α) of 1 to 2 mm, a length (β) sharing an inner space of 30 to 50 mm, and a length of 20 to 40 mm which is shared with the pressure exhaust part (60).

The pressure evacuating part 60 is formed on one side of the thermally fused portion 20 of the plastic packing bag 10 or 10 'or is formed on the protruding portion 40 where the thermally fused portion 20 protrudes, , 10 '), that is, when a person applies pressure to the hand to ingest the filling material (e) in the plastic packing bag (10, 10') or when the filling material (e) Is opened in the microwave oven by the steam pressure generated in the microwave oven when it is heated.

Since the heat-sealed portion 20 is generally thermally welded with a width of 5 to 10 mm, the pressure evacuating portion 60 is much smaller than the heat-sealed portion. The pressure evacuating part 60 is formed in the direction of the inner space from the end of the edge of the plastic packing bag 10 or 10 'and is opened by the external action to open the inside of the plastic packing bag 10 or 10' It is the place where the filling material (e) leaks out from the inner space.

 When the width of the pressure exhaust part 60 is less than 1 mm, there is a possibility that the pressure evacuating part 60 is opened when the plastic packaging bag 10, 10 'filled with the filling material e is loaded and transported When the width (?) Is 2 mm or more, a large amount of force is required for opening the pressure exhaust part (60) by human pressure.

If the length of the pressure exhaust part 60 is less than 30 mm, the length of the opened pressure exhaust part 60 is small and the pressure inside the plastic packaging bag 10 or 10 ' When the filled filling material (e) is difficult to discharge and the length (β) of the inner space is equal to or more than 50 mm, it is easy to discharge the viscous health drink, but the pressure discharging part (60) 10, 10 ') of the filling material (e).

When the length shared with the pressure exhaust part 60 is less than 20 mm, the inclined surface of the pressure exhaust part becomes large when the length β sharing the internal space is 50 mm, so that the plastic packaging bag 10, 10 When the discharge speed of the filling material e is fast and the length of the shared portion with the pressure exhaust part 60 is 40 mm or more even when the same pressure is applied at the time of discharging the filling material (e) the discharge speed of the filling material e becomes slow even when the same pressure is applied at the time of discharging the filling material (e) filled in the plastic packing bag (10, 10 ').

Since the pressure evacuating unit 60 is opened by the pressure of the internal space, a separate tool such as a knife or scissors is not required to open the pressure evacuating unit 60, and even if the user does not cut the cut part by hand do. The perforated line may not be formed in a separate cut-out portion for ingesting the filling material (e) into the plastic bag (10, 10 ') due to the pressure evacuation portion (60) The productivity is improved and manufacturing cost is reduced.

The outflow part 50 is formed in the heat-sealed part 20 constituted by the pressure exhaust part 60 and is formed in a bottleneck shape having a smaller length in the outward direction from the inside, .

do. The inner end of the pressure evacuating unit 60 and the outer end of the outflow unit 50 are shared so that the outflow unit 50 is formed at the inner end of the pressure evacuating unit 60, And is configured in an inner space direction.

The outflow portion 50 is configured such that the length of the outer end that is shared with the pressure exhaust portion 60 is smaller than the length of the inner end that shares the inner space direction of the plastic packaging bag 10 or 10 ' So that the length becomes smaller toward the base 60.

That is, the side surface of the outflow portion 50 has a curved line similar to a sloping or oblique line inclined in the direction of the pressure exhausting portion 60, so that the length of the pressure exhausting portion 60 and the length of the internal space Respectively.

When the pressure of the inner space is increased, the pressure is transferred to the pressure exhaust part 60 through the outlet part 50, and the pressure exhaust part 60 is opened. That is, since the width of the pressure exhaust part 60 is thermally fused to 1 to 2 mm and the width of the heat fused part 20 is 5 to 10 mm, the strength of the heat- When the pressure inside the plastic packaging bag 10 or 10 'is increased by the pressure from the outside or warmed by the microwave oven, the pressure evacuation unit 60 is heated by the heat fusion unit 20).

When the plastic packaging pouches 10 and 10 'are heated in the microwave oven in the state of being filled with the filling material e, the pressure of the inner space of the plastic packaging pouches 10 and 10' is increased, The plastic packaging pouches 10 and 10 'are opened so that the viscous or self-supporting plastic packaging pouches 10' can heat the pouches e.

The first body 30-1 and the second body 30-2 are formed at a position where the outflow portion 50 is formed and are straightly formed at the inner end of the heat-sealed portion 20, (70). When the pressure of the inner space is increased by an external force or an internal action in the state where the filling material (e) is filled in the vinyl packing pouches 10, 10 ', the fusion safety part 70 is firstly separated, (60) is opened.

The vinyl sealing pouches 10 and 10 'composed only of the vinyl sealing pouches 10 and 10' which are not formed with the fusion safety part 70, that is, the heat sealing part 20, When the filling material (e) is filled, it does not straighten from the heat-sealed portion (20) but bulges out from this portion.

The fusion safety portion 70 is formed in a portion of the fusion safety portion 70 adjacent to the pressure exhaust portion 60, that is, in the internal space of the pressure exhaust portion 60, the first body 30-1 and the second body 30-2 are simultaneously and linearly inflated at the heat fusion portion 20 and the fusion safety portion 70 so that the filler e is filled The appearance of the plastic packaging pouches 10 and 10 'becomes beautiful.

The fusion safety part 70 is composed of 2 to 4 dotted lines and has a width of 0.5 to 1 mm and a length of 2 to 6 mm. When the width of the fusion safety part 70 is less than 0.5 mm, the fusion safety part 70 is opened as soon as the pressure in the body 30 is increased. When the width is 1 mm or more, the fusion safety part 70 can function as the fusion safety part 70, The gap between the opening time of the pressure discharge unit 70 and the pressure discharge unit 60 becomes small.

When the length is less than 2 mm, an initial pressure rising in the body 30 is directly transmitted to the pressure evacuating part 60 to open the fusion sealing part 70 and to open the pressure evacuating part 60 When the gap of time is small and the length is 6 mm or more, the initial pressure rising in the body is transferred to the pressure exhaust part 60 late, but the gap between the sealing safety part 70 and the pressure exhaust part 60 is too large do.

The fusion safety portion 70 is formed by the simultaneous action of the heating device 80 and the cooling device 90. The fusion safety portion 70 is formed such that the heating device 80 is in close contact with the cooling device 90, A portion of the film material which forms the body 30 to be transported between the device 80 and the cooling device 90 is located at a position that is aligned with the inner edge of the heat-sealed portion 20 is formed by cooling with heating

The apparatus for forming the fusion safety unit 70 is the same as the apparatus for forming the heat fusion unit 20 in the cooling apparatus 90 and the heating apparatus 80 for forming the heat fusion unit 20, (20) is thermally fused at the same time when the heat-sealed portion (20)

When the filling material (e) of the vinyl packing bag (10, 10 ') is to be cooked with a microwave oven or the like, if the plastic packaging bag is placed in the microwave oven and the power is turned on, the filling material (e) The steam or heated air is released into the pressure discharge unit 60 while the pressure discharge unit 60 is opened after the fusion safety unit 70 is opened. That is, the pressure evacuating part 60 functions as a safety valve when pressure is applied to the vinyl packing pouches 10 and 10 ', and the fusion safety part 70 prevents the pressure evacuating part 60, The pressure to concentrate on the primary relaxation.

The pressure evacuating part 60 is thermally fused by a sealing bar 81 having a thermal fusion relaxation clearance? Of 10 to 50 占 퐉 which is higher than the heat fusion part 20. The pressure fusion portion 60 weakens the heat fusion more than the heat fusion portion 20 and the heat fusion portion 20 strengthens the heat fusion more than the pressure exhaust portion 60 due to the heat fusion relaxation gap epsilon.

The thermal fusion relaxation gap epsilon is formed at the bottom of the sealing bar 81 so that the height of the sealing bar 81 forming the heat fusion portion 20 as the height of the end is set to the height of the pressure exhaust portion 60 The pressure exhaust part 60 is thermally fused so as to be 10 to 50 μm thicker than the heat fusion part 20 and the heat fusion of the pressure exhaust part 60 is heat fusion (20).

The pressure evacuation unit 60 and the heat seal unit 20 are connected to a heating device 80 composed of a sealing bar 81, elevating means 82, a heating frame 83 and a heating means 84, ), A cooling frame (92), and a cooling means (93).

A part of the edges of the first body 30-1 and the second body 30-2 are lifted and elevated by the same elevating means 82 at the same time and the sealing bar 81 having the heating means 84 built therein, Is placed between the cooling bars 91 with the built-in heat exchanger 93 and is thermally fused by the pressure of the lowering of the heating device 80 and the temperature of the sealing bar 81, Is formed.

The sealing bar 81 is formed in a rod shape having two ends and narrowly protruded so as to contact the edges of the first body 30-1 and the second body 30-2 so that the bottom surface of the sealing bar 81 is the same The pressure discharge portion 60 and the heat seal portion 20 are thermally fused with the same pressure and the same temperature.

In this case, since the adhesive strength per unit area of the pressure evacuating part 60 and the heat seal part 20 is the same, the adhesive strength of the pressure evacuating part 60 is preferably It is required to be smaller than the adhesive strength of the heat-sealed portion 20.

In order to reduce the bonding strength of the pressure evacuation portion 60 to the bonding strength of the heat fusion portion 20, the temperature of the sealing bar 81 to which the pressure evacuation portion 60 is contacted is set so that the heat fusion portion 20 is contacted The temperature of the sealing bar 81 should be lowered.

However, since the heating means 84 constructed in the inside of the sealing bar 81 is also configured in the same manner, the heating temperature of the sealing bar 81 can not be partially lowered, so that the flat surface of the sealing bar 81, The surface of the sealing bar 81 forming the pressure evacuating part 60 is formed to be smaller than the height of the plane forming the heat sealing part 20 to form the pressure evacuating part 60, It becomes possible to reduce it.

That is, the height of the sealing bar 81 is different from the height of the portion where the heat-sealed portion 20 is contacted and the portion where the pressure-evacuated portion 60 is in contact with the heat-sealed portion 20 and the pressure- And the heat sealing pressure of the heat sealing portion 20 and the pressure exhaust portion 60 can be made different from each other.

Therefore, if the height of the portion of the sealing bar 81 where the heat-sealed portion 20 is formed is made 10 to 50 mu m larger than the height of the pressure evacuating portion 60, the same first body 30-1 If the heat seal part 20 and the pressure evacuation part 60 are formed by heat fusion at the same time as the second body 30-2, the thickness of the pressure evacuating part 60 is 10 to 50 탆 The pressure is also made smaller than the heat fusion of the heat-sealing portion 20, rather than the heat-sealing of the pressure exhaust portion 60. [

When the difference between the height of the sealing bar 81 of the heat seal portion 20 and the height of the sealing bar 81 of the pressure evacuation portion 60 is less than 10 mu m, the heat seal portion 20 and the pressure evacuating portion 60, The difference in thermal fusion strength between the heat seal portion 20 and the pressure evacuation portion 60 is large and the heat sealability of the pressure evacuation portion 60 is good .

The terms or words used in the specification and claims of the present invention are not to be construed in a conventional or dictionary sense and the inventor can appropriately define the concept of the term in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments described in the detailed description of the present invention and the configurations shown in the drawings are only the most preferred embodiments of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, It should be understood that variations may or may not be present and are to be determined by equivalents to the claims.

10, 10 ': Vinyl packing bag 20:
30: Body 30-1: First body
30-2: second body 40:
50: outlet portion 60: pressure outlet portion
70: fusion bonding safety part 80: heating device
81: sealing bar 82: elevating means
83: heating frame 84: heating means
90: cooling device 91: cooling bar
92: cooling frame 93: cooling means
e: filler α: width
β: length ε: thermal fusion relaxation gap

Claims (5)

And a thermally fused portion integrally fusing a first body forming an inner space sealed with vinyl and a portion of an edge of the second body integrally;
Wherein the heat-sealed portion is formed in a part of the heat-sealed portion and has a width smaller than that of the heat-sealed portion, the end portion of the outer edge of the heat-sealed portion and the end of the outer edge are thermally fused with a width of 1 to 2 mm, And a pressure evacuating portion which is thermally fused to the heat-sealed portion by 10 to 50 占 퐉 more thick than the heat-sealed portion;
And a flow-out portion formed in the heat-sealed portion configured by the pressure-evacuating portion and configured in a bottleneck shape having a smaller length from the inside toward the outer side;
Wherein the height of the sealing bar forming the heat-sealed portion is greater than the height of the sealing bar forming the pressure exhaust portion and is thermally fused by a sealing bar having a thermal fusion relaxation gap of 10 to 50 占 퐉;
Wherein when the pressure of the inner space is increased, the pressure is transferred to the pressure discharge portion through the outlet portion, and the pressure discharge portion is opened.
The method according to claim 1,
Wherein the pressure evacuation unit is thermally fused with a length of 30 to 50 mm that shares the inner space.
3. The method of claim 2,
And a fusion safety part formed at a position where the outlet part is constituted and formed in a straight line at an inner end of the heat-sealed part and thermally fusing the first body and the second body in a dotted line;
Wherein when the pressure of the inner space is increased, the pressure evacuation portion is opened after the fusion safety portion is separated.
The method of claim 3,
Wherein the fusion safety part is thermally fused with a width of 0.5 to 1 mm and a length of 2 to 6 mm.
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