JPS5915021A - Packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packaging device having a continuous heat sealing device for plastic film. Conventionally, a strip-shaped plastic film is formed into a cylinder shape using a forming plate, continuous high frequency welding is performed, and the contents are sealed using a stuffer nozzle. Welding was carried out at high frequency in the packaging equipment that packed the products, ligated them with a wire, and cut them into individual pieces.The film used in this case was a polyvinylidene chloride (1) resin film with a parrying property. It is used because it has good properties,
In addition, continuous high frequency f6 welding has been used because the strength of the welded part is stronger than continuous heat sealing in terms of physical properties.

However, in recent years, in addition to the above-mentioned film made only of vinylidene chloride-based stool fat film, packaging with multilayer films has also come to be used. The multilayer film is often a laminated film having a metal crosslinked resin film (for example, ionomer trademarked by DuPont) on both sides of a vinylidene chloride resin as a barrier layer, and welding of such a multilayer film is continuous. Continuous heat sealing is thought to be more suitable than high-frequency welding due to physical properties, but no concrete continuous heat sealing device has yet existed.

Regarding the heat-on-roll method, although there are various known methods such as impulse heat sealing, there is no method that performs continuous heat sealing and forms a cylindrical bag for packaging. Therefore, the object of this invention is to provide a packaging device that performs continuous heat sealing when a multilayer film is applied to the packaging device.

To explain the rotation pressure, FIG. 1 is a conceptual explanatory diagram showing an example of a packaging machine to which the present invention is applied, in which a multilayer film original 1 is pulled out and formed to surround the outside of the stuffer nozzle 2. The flange 9 attached to the stuffer nozzle, which is wound into a cylindrical shape in the plate 3, defines the diameter of this cylindrical portion. A fixed electric heating part 4 is fitted into the stuffer nozzle 2, and a movable peeking heating part 5 is provided on the outside thereof. Heat 7 is applied.

The contents are discharged into the cylindrical film 10 from the tip 2' of the stuffer nozzle 2. Reference numeral 6 denotes a film feeding roll, which feeds the film 10 downward, and the contents are swollen downward in a figure-8 shape with respect to the roll 6 in a direction perpendicular to the plane of the paper [(i.e., in the axial direction of the roll). Then, a filling body 11 is formed between the 7 goki rolls 7 below the further V.

The squeeze roll has a longer axial length υ than the feed roll, and the lower part of the squeeze roll is a flat portion where only the film 10 is present, with the contents blocked. This flat part is ligated with aluminum wire 1f using an aluminum ligating machine 8. When the ligation is completed, the shigoki roll opens to the left and right to allow the filling material 11 to pass downward, and when a certain amount has passed, the ngoki roll closes again. Then, as shown in the figure, when the filling body passes through the aluminum ligating machine 8, the aluminum ligating machine 8 moves the filling body to a position above the filling body! Ligate with 16, complete product 14
Then, the film is cut and the above process is repeated one after another.

FIG. 2 is an explanatory diagram of the fixed electric heating section, in which the fixed electric heating section 4 is fitted into the stuffer nozzle 2 and covered with a glass cloth 4 whose protrusion 410 surface is impregnated with Teflon resin.
2 is glued and a strip-shaped nichrome strip 43 is placed on the surface of 42.
The lower end of the nichrome strip 46 is fixed to the surface of the stuffer nozzle 20, and a glass cloth 44 impregnated with Teflon resin is also bonded to the surface of the nichrome strip 46. The nichrome strip 46 is connected to the terminal 45 by an electric wire 46. On the other hand, the stuffer nozzle is connected to the terminal 45' by the 'a line 46'. Thus, the nichrome strip 43 and the stuffer nozzle 2 come into contact at the contact portion 47, so that the nichrome strip 43 is energized.

FIG. 6(A) shows a front view of the movable electric heating section 5, and FIG. 6(B) shows a side view thereof. In the movable electric heating section 5, an insulating plate 53 is fixed to a lever 52 loosely engaged with a fulcrum 51, and a nichrome wire 54 is fixed to the insulating plate 53 in an arcuate shape. A glass cloth 55 impregnated with Teflon resin is adhered to the convex surface of the nichrome wire 54 fixed in an arcuate shape. Current is passed through the nichrome wire 54 at wire 56 and terminal 58 and wire 57 and terminal 59.

Thus, the original film 1 is loaded into the packaging machine of the present invention, and
7. A multilayer film is formed into a cylindrical shape through an ohming plate 3, and the folded portion is sandwiched between a fixed electric heating section 4 and a movable electric heating section 5 to apply appropriate amounts of current to the nichrome band 45 and the nichrome wire 54, respectively. Multilayer films can be welded by pouring and running the multilayer film. Direct strength 1 (a strength comparable to that of conventional vinylidene chloride film subjected to high-frequency welding) was obtained.

〔Example〕

The operating conditions during actual welding in the heat seal equipment section were as follows. That is, the film used was a metal cross-linked 4VI fat film (trademark ionomer) with an adhesive layer on both sides of the vinylidene-based (resistant) finger barrier Jm.
The laminated film had a film of a mixture of metal crosslinked resin/li and polyethylsin resin on one side and on the other side, and had an average thickness of 50 lt.

Dimensions of the nichrome band of the fixed electric heating part DN family, SA01 sea bream, width 6
The cutting resistance was 0.2 Ω, and the τ accuracy on the surface of the glass cloth impregnated with Teflon resin was measured at 70° C. by applying a voltage of 1 to 2 Vf as appropriate depending on conditions such as temperature.

The dimensions of the heater in the X heating section are 1ψ nichrome wire,
The resistance was 0.250, and the temperature of 1i+i degrees on the surface of the glass cloth impregnated with Teflon resin was 250° C. by applying a voltage of 4 to 6 V as appropriate depending on conditions such as temperature. Sufficient bursting strength was obtained at a film feeding speed of 10 m/min.As described above, according to the packaging device of the present invention, metal is coated on both sides of the vinylidene chloride resin as the barrier layer through an adhesive layer. Multilayer films containing cross-linked 441 II\i' films can be continuously packaged using a packaging machine, and this is far superior to the conventional continuous packaging of polyvinyl chloride/based a-based fat film that is exposed to high-frequency waves. There wasn't.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram of the continuous packaging machine, Figure 2 is an explanatory diagram of the fixed electric heating section, Figure 3 (A) is a front view of the movable heating section, and Figure 6 (A) is a front view of the movable heating section.
B) also shows a side view. Explanation of symbols 1... Original fabric, 2... Stuffer nozzle, 6...
Forming plate, 4. Fixed electric heating section, 5. Movable electric heating section, 6. Film feed roll, 7. Shigoki roll, 8. Aluminum ligating machine, 9. Flange, 10.
...Tubular film, 41...Protrusion, 42.44...Glass cloth, 46
Nichrome band, 45・one terminal, 46・wire, 51・fulcrum, 52・lever, 56・insulation plate, (other names) Fig. 1 Fig. 2 Fig. 3 (B) 116-

Claims (1)

[Claims] ・Make an L-shaped brass tube into a cylindrical shape with a quarming compound, harden it continuously, fill it with round keys using a stuffer nozzle, tie it with a wire, and cut it into pieces.
Continuous bath @↑11
- is swallowed by the stuffer nozzle 2, and a glass cloth 42 containing Teflon resin is adhered to the surface of the protruding hIS410.
A band-shaped Nichrome Tei 46 is stuffed at one end at the interface of 2.
It is fixed to the surface of the nozzle 2, and a glass cloth 44 soaked in Teflon resin is also adhered to the surface of the nichrome resin 43. An insulating plate 5 is fixed to a lever 52 that is loose at a fulcrum 51, and an arcuate nichrome wire 5 is attached to the insulating plate 53.
4 is fixed, and a movable electric heating part 5 has a glass cloth 55 impregnated with Teflon resin adhered to the convex surface of the arcuate nichrome wire 54.