JPH01153410A - Liquid containing type packing method and apparatus for liquid and viscous material - Google Patents

Abstract

PURPOSE:To lessen liquid residue on sealing and fully fill contents by feeding required volume of contents with a feeding nozzle from a clearance for filling the contents which are formed between the end of lateral seal part and a bent part double-folded and by pressing for evenly flattening the clearance for the contents by pinch rollers. CONSTITUTION:A discharging outlet 3a of required liquid or viscous material is opened into a clearance 4 for filling the contents between the end of lateral seal part (2'b) and a bend part (a1) double folded by longitudinal and lateral seal rolls 2, 2 to fill the contents in a charging part 5 of packing film (a) from the clearance 4. A pair of lateral seal rolls 6, 6 for seal of the opening arranged at a required position under the longitudinal and lateral seal rolls 2, 2 seal with heat the clearance 4 for filling the contents as a unit in a laterally sequential condition with a lateral seal part (2'b) after filling of the contents and make a packed article (a') by application of a lateral seal part (6a) for seal of the opening. Arranged pitch rolls 7, 7 press to make flat the clearance for filling the contents of the packing film (a) to lessen residue of the contents in said part.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves transporting a bi-folded strip film of a required width in the longitudinal direction, filling the inside with contents such as liquid or viscous material, and The present invention also relates to a liquid-containing seal type continuous liquid/viscous packaging method and apparatus in which the package is sealed with a horizontal seal roll.

(Prior art) Conventionally, a film strip of a required width is folded into two and is transported in the vertical direction while filling the inside with liquid, viscous material, etc., and then heat-sealed with vertical and horizontal sealing rolls to create a package. There are two types of packaging means that allow for vertical and horizontal sealing rolls before filling the contents.
This is an egg wash seal type packaging in which a horizontal seal is applied, the contents are then filled, and a horizontal seal is applied again with a horizontal seal roll to form a package. This is a liquid-tight seal type package in which a horizontal seal is applied while extruding excess contents using a horizontal seal roll to form a package.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional packaging means, in the case of the former (egg-liquid seal type packaging), vertical and horizontal sealing rolls are applied to the packaging material film so that the vertical and horizontal sealing rolls do not touch the contents. In order to perform horizontal sealing, especially when performing sealing (top seal) after filling the contents with a horizontal seal roll, a space remains at the top of the contents, which causes the contents to be in an aerated state, which later Since the contents may oxidize, there is a problem that not only the types of contents are limited, but also the amount of packaging film used is large compared to the amount of contents filled. This is uneconomical, and if the content is not filled in time with the timing of the horizontal seal roll, the content will come into contact with the horizontal seal and form a liquid-filled seal, causing seal leakage and making the seal unstable. There were problems in that the packaging speed could not be increased and therefore the packaging capacity could not be improved.

On the other hand, in the case of the latter (liquid seal type packaging), the horizontal seal is performed using a horizontal seal roll when the contents are fully filled, so there is no space above the contents as in the former. There is no possibility that the contents remain in an aerated state and the contents later undergo oxidation phenomenon, and there is no need to synchronize the timing of filling the contents with the timing of the horizontal sealing roll, so filling the contents is easy. Yes, but liquids and
When continuously packaging contents such as viscous substances using heat seal rolls, sealing conditions vary depending on the temperature, physical properties, and thickness of the contents (swelling of the filled part) of the contents, and the packaging capacity varies in proportion to the conditions. There is a principle that determines
When heat sealing a packaging film containing contents such as liquid or viscous material, it is necessary to instantaneously apply temperature, pressure, and time. In this case, as a characteristic of the packaging material film, the polyethylene on the inner surface (sealing surface) is required to be completely fused within the instantaneous time and to be free from hot peeling. Especially when the content is liquid, there is a relationship between the boiling point of the substance and the heat sealing conditions. For example, if the heat seal temperature is 150°C,
If the temperature at the time of filling the contents is 30℃, the temperature difference will be 120℃, and if this temperature is higher than the boiling point of the contents, the contents will foam, and this foaming will cause the sealing part to foam. The problem is that the seal is applied in a pinched state, which not only leads to leakage at the seal part, but also causes distortion of the composite film layer due to temperature differences in the laminated part of the JeUi film, causing wrinkles due to deformation. If there are not only dots but also a large amount of content, the packaging material film may come into contact with the upper side of the sealing surface of the horizontal sealing roll when compressed by the horizontal sealing roll, causing a blocking phenomenon (heat shrinking of the packaging material film). There were various problems such as the need to attach a heat insulating material to the core to prevent this from occurring.

The present invention solves the above-mentioned problems, and in liquid-filled seal type packaging, most of the vertical and horizontal seals on the packaging material film are performed before filling the contents, and the sealing in the liquid-filled state after filling the contents is reduced. By performing the sealing process both locally and continuously along the flow direction of the packaging material film, the gap between liquid gaps during sealing is reduced, and the seal always prevents leakage depending on the temperature, physical properties, and thickness of the contents. Liquid-bearing seal type continuous liquid that can perform full filling for stable packaging, has a wide mechanical range of sealing conditions that can be used to seal many types of packaging material films, and has a simple sealing mechanism and high packaging capacity.・The purpose is to provide a viscous packaging method and device.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention aims to solve the above-mentioned problems by continuously transporting a strip-shaped film of a required width in the form of two folds in the longitudinal direction, filling the contents with content, and In a liquid-containing seal type continuous liquid/viscous packaging method in which a package is formed by sealing required points with a horizontal seal roll, a vertical seal portion is attached to the overlapping end side of the strip film before filling the contents. A lateral seal portion extending from the longitudinal seal portion toward the bifold folded portion is formed by providing a gap portion for filling content with a required width between the end of the lateral seal portion and the bifold folded portion. At the same time, the content is filled into the band-shaped film from the content filling gap, and then the content filling gap is laterally sealed [continuous with the lateral sealing part using one seal roll]. to form a package by sealing them together in the transverse direction at A liquid-containing seal type continuous liquid/viscous material comprising a vertical seal roll and a nozzle for filling contents, which has a vertical sealing part and a horizontal sealing part that seals the strip film at predetermined intervals in the horizontal direction. In the packaging device, before the contents are filled, the vertical and horizontal seals by the vertical and horizontal seal rolls are performed such that the vertical seal part is on the overlapping edge side of the strip film, and the end of the horizontal seal part and the two-fold The vertical and horizontal sealing rolls are disposed at predetermined positions so that a content filling gap of a required width is formed between the folded portion and a predetermined amount of content in the content filling gap. An inlet/outlet portion of a content filling nozzle for filling the content is arranged so as to face into the content filling gap from a position above the vertical/horizontal seal roll, and further located at a predetermined position below the vertical/horizontal seal roll. A lateral sealing roll is disposed at the position to integrally seal the content filling gap after the content is filled in a continuous state with the lateral sealing part in the lateral direction to form a package. It is something that will be done.

(Function) As shown in Figures 1 and 2, the guide member
While the folded packaging material film is being transported downward, it is sealed in the predetermined vertical and horizontal directions by vertical and horizontal sealing rolls, and the end of the horizontally sealed portion and the two-folded portion are sealed. A required amount of content is filled into the content filling portion (inside the bag) by a content filling nozzle from the content filling gap formed between the bags. And by the horizontal sealing roll located below the vertical and horizontal sealing rolls,
The content filling gap is integrally sealed in the lateral direction in a continuous state with the lateral sealing part to form a package.

At this time, as shown in Figures 1 and 2, the content filling gap is compressed with pinch rolls to reduce the amount of content remaining in the line part as much as possible, and the horizontal sealing roll is used to keep the content continuous in the lateral direction. They can also be sealed together to form a package.

(Example) Figures 1 to 3 show an example of the present invention.
is a guide member that continuously forms the band-shaped packaging material film a into a double-folded cylindrical shape, and is attached to a predetermined position of the separate body A. Reference numerals 2 and 2 denote vertical and horizontal sealing rolls, including a vertical sealing portion 2a that continuously heat-seals longitudinally overlapping edges of the cylindrical packaging film a over a required width; It has a transverse seal part 2b of a required length extending from the longitudinal seal part 2a toward the bifold fold part a1 of the packaging film a.

Reference numeral 3 denotes a content filling nozzle disposed at a predetermined position above the vertical/horizontal seal rolls 2, 2, which fills the content such as a required liquid or viscous substance with the vertical/horizontal seal rolls 2, 2.
2 so that it can be filled into the content filling part 5 of the packaging material film a from the content filling gap 4 between the end of the transverse seal part 2'b applied by 2' and the two-fold bent part 81. The outlet 3a faces into the content filling gap 4. Reference numeral 6°6 denotes a pair of horizontal sealing rolls disposed at predetermined positions below the vertical and horizontal sealing rolls 2.2, which are used to seal the gap 4 for filling the contents after filling the contents.
are integrally heat-sealed in a continuous state in the lateral direction with the lateral sealing portion 2°b to form a lateral sealing portion 6a to form a package a'.

7.7 is a pinch roll disposed between the longitudinal and lateral sealing rolls 2.2 and the lateral sealing roll 6.6, which presses the content filling gap 4 of the packaging film a. This is to reduce the amount of content remaining in the line portion. Reference numerals 7a and 7a are cooling rolls that cool the seal portion. Reference numeral 8.8 is a perforation cutting rotary body disposed at a predetermined position below the horizontal sealing roll 6.6, which cuts a required perforation 8a in the ait bottom seal portion 6a of the package a'. It is something. 9, 9 is a roll cutter disposed at a predetermined position below the perforation cutting rotary body 8;
is cut in the lateral direction from the center of the lateral seal portion 2a. io and io are a pair of film gathering pinch rolls disposed at a predetermined position above the horizontal sealing rolls, and are used to accurately overlap the longitudinal edges of the packaging material film a. 11 is a guide roll. Although the operations of each part in this embodiment are not shown, they are all synchronously operated by well-known drive means! It goes without saying that the configuration is such that the vertical seal portion 2a of the vertical/horizontal seal roll 2.2 can be changed to produce various seal shapes as shown in the third figure. It is also possible to obtain

(Effects!) As explained above, according to the present invention, while continuously transporting the two-folded strip film in the lengthwise direction, filling the film with the contents and rolling it vertically and horizontally. In a liquid-containing seal type continuous liquid/viscous packaging method in which a package is formed by sealing the required locations with A lateral seal portion extending from the seal portion toward the bifold bending portion is formed by providing a gap portion for filling content with a required width between the end of the lateral seal portion and the bifold bending portion, and The content is filled into the band-shaped film from the content filling gap, and then the content filling gap is laterally integrated in a continuous state with the lateral sealing part using a lateral sealing roll. a vertical sealing section that vertically seals the overlapping edges of the longitudinal direction of the film while continuously transporting the strip-shaped film of a required width folded in two in the vertical direction; , a liquid-container-seal type continuous liquid/viscous packaging device comprising a vertical/horizontal sealing roll having a horizontal sealing portion for sealing the strip film at predetermined intervals in the horizontal direction, and a nozzle for filling the contents; Before filling the product, the longitudinal and lateral sealing rolls form a longitudinal and lateral seal on the overlapping edge side of the strip film, and a longitudinally sealed part on the overlapping edge side of the strip film, and also between the end of the lateral sealed part and the two-fold folded part. The vertical and horizontal sealing rolls are disposed at predetermined positions so that a content filling gap of the required amount rj is formed between them, and a predetermined amount of content is filled into the content filling gap. The spout portion of the material filling nozzle is disposed so as to face into the content filling gap from a position above the vertical and horizontal seal rolls, and is further disposed at a predetermined position below the vertical and horizontal seal rolls. Since the product is equipped with a lateral sealing roll that integrally seals the content filling gap after filling the content in a continuous state with the lateral sealing part in the lateral direction to form a package, the liquid In Kami-Seal type packaging, the heat sealing area after filling the contents is significantly smaller than that of conventional liquid-tight seal packaging, and the amount of liquid absorbed during sealing is small, and the sealing is not intermittent. , it can be carried out continuously in the vertical direction along the flow of the packaging material film, and as a result, even if the content has a low boiling point and is prone to foaming, the amount of foaming can be minimized and this can be carried out in the flow of the film. By continuously sealing along the edges, it is possible to reliably prevent leakage of the sealed portion due to foaming and to achieve stable sealing.In addition, the laminated portion of the packaging material film is free from distortion of the composite film layer due to temperature differences. This prevents the occurrence of wrinkles due to film deformation in the sealing part, and also prevents the filling part from sagging and blocking phenomenon when sealing. In addition to being able to perform stable packaging at all times depending on the temperature, physical properties, and thickness of the contents, it is also possible to fill to the brim, and it is also capable of sealing many types of packaging material films, allowing for a flexible range of sealing conditions. It has a large size, has a simple sealing mechanism, is easy to manufacture, and has a high packaging capacity, which has various advantages for customers.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a front view showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a perspective view of the main parts of the same. FIG. 3 is a perspective view, not showing eight examples, of packages in which the shape of the seal portion is changed. DESCRIPTION OF SYMBOLS 1... Guide member, 2. 2... A pair of vertical and horizontal direction seal rolls, 2a... Vertical direction seal part, 2b... Horizontal direction seal part, 3... Content filling nozzle, 4...
Content filling gap part, 5... Content filling part, 6...
A pair of lateral inner seals L]-ru, 6a... Lateral sealing portion, 7... A pair of pinch rolls, 7a, 7a
...Cooling roll, 8,8...Perforation cutting rotary body, 8a...Perforation, 9.9...Roll cutter,
10.10... Film gathering pinch roll, 11.
...Guide roll, A...Body, a...Packaging material film, a'...Packaging body, al...Bifold folding part,
2°a...Vertical seal portion, 2°b...Horizontal seal portion, b...Contents. Figure 2

Claims (4)

[Claims] (1) A strip-shaped film of the required width folded into two is filled with the contents while being continuously conveyed in the vertical direction, and the required areas are sealed using vertical and horizontal sealing rolls to form a package. In the liquid-containing seal type continuous liquid/viscous packaging method, before filling the contents, a vertical seal portion is provided on the overlapped end side of the strip film, and a horizontal seal portion is provided from the vertical seal portion toward the folded portion side. is formed by providing a content filling gap of a required width between the end of the lateral seal portion and the bifold folded portion, and the content is filled into the strip film from the content filling gap. The liquid is filled, and then the gap for filling the contents is sealed integrally in the lateral direction in a continuous state with the lateral sealing portion using a lateral sealing roll to form a package. Bite-type continuous liquid/viscous packaging method. (2) A strip-shaped film of the required width folded in half is filled with the contents while being continuously transported in the vertical direction, and the required areas are sealed using vertical and horizontal sealing rolls to form a package. In the liquid-containing seal type continuous liquid/viscous packaging method, before filling the contents, a vertical seal portion is provided on the overlapped end side of the strip film, and a horizontal seal portion is provided from the vertical seal portion toward the folded portion side. is formed by providing a content filling gap of a required width between the end of the lateral seal portion and the bifold folded portion, and the content is filled into the strip film from the content filling gap. After that, the content filling gap is compressed with a pinch roll to reduce the amount of content remaining in the part, and then the content filling gap is sealed with a lateral sealing roll. A liquid-tight seal type continuous liquid/viscous packaging method characterized by forming a packaging body by integrally sealing the seal in the lateral direction in a continuous state with the direction seal part. (3) A vertical sealing section that vertically seals the overlapping edges of the two-folded film strip of a required width while continuously transporting the film strip in the longitudinal direction, and the film strip is separated at a predetermined interval in the horizontal direction. In a liquid-containing continuous liquid/viscous packaging device, which is equipped with vertical and horizontal sealing rolls having horizontal sealing parts for each seal and a nozzle for filling the contents, the vertical and horizontal sealing parts are The vertical and horizontal sealing by the directional sealing roll creates a vertical sealing part on the overlapping edge side of the strip film, and a gap of a required width for filling the contents between the end of the horizontal sealing part and the bifold folded part. The vertical and horizontal sealing rolls are arranged at predetermined positions so that a gap is formed, and the spout part of the content filling nozzle for filling a predetermined amount of content into the content filling gap is aligned with the vertical direction.・Disposed so as to face the content filling gap from an upper position of the horizontal seal roll, and further located at a predetermined position below the vertical and horizontal seal rolls into the content filling gap after filling the content. A liquid-containing seal type continuous liquid/viscous packaging device, characterized in that a lateral sealing roll is disposed to form a package by integrally sealing the lateral seal portion in the lateral direction in a continuous state with the lateral sealing portion. (4) A vertical sealing section that vertically seals the overlapping edges of the two-folded film strip of a required width while continuously transporting the film strip in the longitudinal direction, and the film strip is separated at a predetermined interval in the horizontal direction. In a liquid-containing continuous liquid/viscous packaging device, which is equipped with vertical and horizontal sealing rolls having horizontal sealing parts for each seal and a nozzle for filling the contents, the vertical and horizontal sealing parts are The vertical and horizontal sealing by the directional sealing roll creates a vertical sealing part on the overlapping edge side of the strip film, and a gap of a required width for filling the contents between the end of the horizontal sealing part and the bifold folded part. The vertical and horizontal sealing rolls are arranged at predetermined positions so that the vertical and horizontal sealing rolls are formed, and the spout part of the content filling nozzle for filling a predetermined amount of content into the content filling gap is aligned with the vertical direction.・Disposed so as to face the content filling gap from an upper position of the horizontal seal roll, and further located at a predetermined position below the vertical and horizontal seal rolls into the content filling gap after filling the content. a pinch roll that compresses the content to reduce the amount of content remaining in the portion, and the gap portion for filling the content after being compressed by the pinch roll is integrated in the lateral direction in a continuous state with the lateral seal portion. A liquid-containing seal type continuous liquid/viscous packaging device characterized by being provided with a horizontal sealing roll that seals and forms a package.