KR100932525B1 - Adhesion machine of plastic film, and adhesion method using thereof, and gas bag - Google Patents

Abstract

PURPOSE: An adhesion machine for plastic films, an adhesion method using the same, and a gas bag formed out of plastic films by the method are provided to produce a gas bag with a gas storage space and a valve by attaching the edges of upper and lower films. CONSTITUTION: An adhesion machine for plastic films comprises a lower frame(10), an upper frame(20), and a heating unit(30). The upper frame ascends and descends above the lower frame, and contacts the lower frame to spread films when lowered. The heating unit applies heat to the films at the contact part of the upper frame and the lower frame. An adhesion method using the adhesion machine comprises the steps of: placing the films with the ends exposed on the lower frame while the upper frame is raised, securing the films between the upper and lower frames by lowering the upper frame, bonding the films by applying the heat by the heating unit to the exposed ends of the films, and raising the upper frame and taking out the bonded films.

Description

Synthetic Resin Film Bonding Device, Adhesion Method Using the Same, and Gas Bag Manufactured by the Method {ADHESION MACHINE OF PLASTIC FILM, AND ADHESION METHOD USING THEREOF, AND GAS BAG}

The present invention relates to a synthetic resin film bonding apparatus for bonding each end of a two-ply synthetic resin film and to one connection, and to a bonding method using the same, in particular, used to store a chemical sample or various gases by bonding a PET film The present invention relates to a resin film bonding apparatus suitable for manufacturing a gas bag and a bonding method using the same.

In general, since a thin synthetic resin film such as vinyl can be made of almost any kind of polymer resin, it is possible to select and use a film having suitable characteristics according to the use and the purpose of use.

In order to make an envelope or a bag with a synthetic resin film, it is bonded in a form in which the edges of the two-ply film are bonded to each other by applying heat. In the heating wire heating method, PP, PE, OPP, etc. This is the most general way to do it.

In addition, the film bonding method includes a high frequency method mainly used to bond a PVC film, a method of using a heating block with irregularities to manufacture a pouch, and a thermal blade bonding method using a heat generating knife. .

However, in order to safely store chemical gases or liquids, it is necessary to select a resin having a low porosity between the fine particles of the resin and a material having low air permeability and not tearing easily. This can be called.

However, as a general heating method, even if the PET film is not easily adhered to the film, the defect rate is high and the productivity is not good. The high frequency bonding method is only suitable for bonding a PVC film, and other materials are difficult to use. Very limited, there is also a problem that is not suitable for bonding the PET film in the heating block method or thermal blade method of the uneven for pouches and the like. Moreover, in case of thermal blade type, the film fusion adhered to the blade is frequently wiped out, which is cumbersome to use and there is a risk of safety accident, and inefficient problem such as expensive Teflon coating to prevent the film fusion adhered to the blade surface. There is this.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a synthetic resin film bonding apparatus and an adhesive method using the same, which are capable of bonding various kinds of synthetic resin films, in particular, for bonding PET films.

Another object of the present invention is to provide a PET gas bag with improved gas tightness by providing a synthetic resin film bonding apparatus and a bonding method using the same suitable for bonding PET film.

Adhesive apparatus of the present invention for achieving the above object, the lower frame (10); An upper frame 20 provided to be capable of lifting on the lower frame 10 and interposing a film to be bonded to and bonded to the lower frame when lowering; It characterized in that the combination of the heating means 30 for applying heat to the film of the close contact portion of each of the frame (10) (20).

Bonding method of the present invention for achieving the above object, the film setting step (a) is installed so that the end of the film is exposed to the outside on the lower frame 10 in the upper frame 20 is raised; A film fixing step (b) of lowering the upper frame 20 to fix the film between the respective frames 10 and 20; A film bonding step (c) of fusion by applying heat radiated by the heating means 30 to the exposed end of the film interposed between the frames 10 and 20; It is characterized by consisting of a film obtaining step (d) of lifting the upper frame 20 to take out the bonded film.

By the above method, the edges of the upper film 1a and the lower film 1b are adhered to each other to form a gas storage space therein, and a gas bag having a valve 2 for opening and closing the internal space on one side can be manufactured. .

According to the present invention, it is possible to bond various kinds of synthetic resin films, and even in the case of PET film, which has been difficult to adhere to the present, it provides a new technique that can be adhered cleanly so that there is little adhesion failure rate and no adhesive marks remain.

Therefore, according to the present invention, it is possible to easily produce a PET gas bag suitable for storing a chemical sample or a gas, through which the high efficiency gas bag can be supplied at a low price.

Hereinafter, the present invention will be described in more detail with reference to the embodiments drawn in the accompanying drawings, and the accompanying drawings are only one example according to the present invention, and are not intended to limit the present invention.

1 is a perspective view schematically showing a synthetic resin film bonding apparatus according to the present invention, Figure 2 is a side view schematically showing a synthetic resin film bonding apparatus according to the present invention.

1 and 2, the synthetic resin film adhesive device, the lower frame 10 fixed to the side of the plate 60, the upper frame 20 provided to be elevated on the lower frame 10, It is roughly divided into the heating means 30, and preferably, the lower frame 10 side may further include a support jaw 40 in conjunction with the lifting operation of the upper frame 20.

In the lifting and lowering drive of the upper frame 20, a hydraulic or pneumatic cylinder 22 is installed on a post 50 installed vertically on the plate 60, and the upper frame 20 drives the cylinder 22. Up / down is possible by.

The synthetic resin film, which is the object of adhesion, is seated and fixed between the frames 10 and 20, and heating means 30 is disposed on the side of the close contact portion of each frame 10 and 20 to melt and fuse the fixed synthetic resin film. ) Is located.

The heating means 30 may be in the form of an air gun that injects air at a high temperature (eg, a temperature of 350 ° C. to 450 ° C.) as shown, or may be a flame thrower that emits a flame (flame) by igniting a gas.

In addition, the heating means 30 may be installed to reciprocate in the longitudinal direction of each of the frames 10 and 20 in conjunction with the driving of the driving motor 31. To this end, screw rods 32 arranged in the drive motor 31 in the longitudinal direction of each of the frames 10 and 20 are installed, and guide rods 34 are installed in parallel with the screw rods 32. The support 33 fixing the heating means 30 is movable along the guide rod 34 and simultaneously screwed to the screw rod 32.

In this configuration, since the screw rod 32 rotates when the drive motor 31 rotates, the support rod 33 screwed with the screw rod 32 is screw rod 32 according to the rotation direction of the screw rod 32. It is possible to reciprocate in the longitudinal direction of the support 33 is fixed to the guide rod 34 so that the position is fixed, that is, the heat source discharge direction of the heating means 30 is each frame 10, 20 ) Can be reciprocated along the longitudinal direction of each frame (10, 20) in a fixed state to face the contact portion.

On the other hand, when the synthetic resin film is interposed between each of the frames 10, 20, the base jaw 40 to adjust the amount of the end of the film exposed to the outside of the frame, the lower frame 10 ) Is installed to protrude upward from the upper surface of the lower frame 10 at a distance separated from the predetermined distance, and is preferably installed so as to simultaneously lift / lower the upper frame 20 in conjunction with the lift driving.

To this end, the base 40 is connected to the rod of the cylinder 41 driven by hydraulic pressure or pneumatic, and the cylinder 41 is the same hydraulic or pneumatic device as the cylinder 22 for driving the upper frame 20. When the upper frame 10 is raised or lowered in connection with the base jaw 40 can also be raised or lowered in the same direction.

Although not shown, each of the frames 10 and 20 may be connected to a cooling device to circulate the cooling water. To this end, as shown in FIG. 2, each of the frames 10 and 20 has a wider surface area and is processed into a shape that facilitates heat dissipation, while cooling the respective cooling water passages 11 and 21 formed with holes therein. The coolant supplied from the pump of the device (not shown) may be injected to circulate inside each of the frames 10 and 20, and then exit to the cooling device, which will be described in more detail with reference to FIG. 3. Explain.

Figure 3 is a view showing the film bonding process in order using the synthetic resin film bonding apparatus according to the present invention, Figure 4 is a perspective view of a gas bag produced by the synthetic resin film bonding method according to the present invention.

As shown in Figure 3, the synthetic resin film bonding method of the present invention, the film setting step (a) is installed so that the end of the film is exposed to the outside on the lower frame 10 in the state in which the upper frame 20 is raised; The film fixing step (b) of fixing the film between each frame 10, 20 by lowering the upper frame 20, and heating means on the exposed end of the film interposed between each frame (10, 20) The film bonding step (c) of applying the heat radiated at 30 and fusion is carried out, and the film obtaining step (d) of raising the upper frame 20 to take out the bonded film.

More specifically, in the case of the film setting step (a), the two-layer film in which the upper film 1a and the lower film 1b are bonded to each other is placed on the lower frame 10, wherein the end of the film is The upper surface of the lower frame 10 is brought into contact with the side of the support jaw 40 further protruded upwards. In this case, since the base jaw 40 is at a position spaced apart from the lower frame 10 by a predetermined distance, the film end is exposed to the left side, that is, the outside of the lower frame 10 on the drawing.

The film fixing step (b) is to operate the cylinder 22 (see FIG. 1) to bring the upper frame 20 into close contact with the lower frame 10, in conjunction with the lowering operation of the upper frame 20. The base jaw 40 is lowered. In this case, since the end position of the film is determined by the support step 40, the film end is maintained as it is outwardly exposed from the end of each frame 10 (20).

The film bonding step (c) is to apply a heat source of the heating means 30 to the exposed film, the hot air or flame flames of the heating means 30 is exposed in each frame 10, 20 When the film is applied to the film, the film is fused by heat. At this time, when the cooling water is circulated in the cooling water passages 11 and 21 of each of the frames 10 and 20, the respective frames 10 and 20 are not heated, so that each frame The heat of the heating means 30 is not transmitted to the film interposed between the (10) and (20), and does not melt.

Therefore, the heat source of the heating means 30 is fused only the portion exposed at the end of each frame 10, 20, and the portion interposed therebetween remains unmelted, wherein the upper film (1a) and the lower side The melting part of the film 1b and the boundary part of the non-melting part are mutually bonded and integrally connected.

Next, the film obtaining step (d) is a step of raising the upper frame 20 to space the interval between each frame 10, 20, and then to obtain the bonded film (1). Of course, when the upper frame 20 is raised, the base jaw 40 is also raised to be in a state in which the non-bonded film can be set.

When the three or four surfaces of the upper film 1a and the lower film 1b are bonded together in this process, the synthetic resin film gas bag 1 having a space formed therein as shown in FIG. When the valve 2 for opening and closing is installed on one side of the gas bag 1, the gas bag 1 may be used for a purpose suitable for filling or removing air in the gas bag 1.

Although the foregoing description has been made based on the illustrated limited embodiments, the present invention is not limited to the illustrated embodiments and drawings, and various modifications and changes can be made without departing from the spirit and scope of the present invention. It should be understood that such modifications are within the scope of the claims of the present invention.

1 is a perspective view schematically showing a synthetic resin film bonding apparatus according to the present invention.

Figure 2 is a side view schematically showing a synthetic resin film bonding apparatus according to the present invention.

Figure 3 is a view showing a film bonding process in order using a synthetic resin film bonding apparatus according to the present invention.

Figure 4 is a perspective view of a gas bag produced by the synthetic resin film bonding method according to the present invention.

Explanation of symbols on the main parts of the drawings

1 ... air bag

10 ... lower frame 11 ... with coolant

20 ... upper frame 21 ... with coolant

22, 41 ... cylinder

30. Heating means 31 ... Drive motor

32 ... screw rod 33 ... support

34.Guide bar

40.

50 ... Post

60 ... plate

Claims (13)

Lower frame 10; An upper frame 20 provided to be capable of lifting on the lower frame 10 and interposing a film to be bonded to and bonded to the lower frame when lowering; Heating means (30) for applying heat to the films of the close contact portions of the frames (10, 20); In order to expose an end portion of the film interposed between the frames 10 and 20 to the outside, a support protrusion protruding upward from the upper surface of the lower frame 10 at a distance spaced from the lower frame 10 ( 40); Synthetic resin film adhesive device characterized in that consisting of. The method of claim 1, The resin film adhesive apparatus, characterized in that the cooling water passage (11) (21) is perforated so that the cooling water is circulated in each of the frame (10) (20). delete The method of claim 1, The support jaw 40 is a synthetic resin film adhesive device, characterized in that at the same time lowered in conjunction with the lowering operation of the upper frame (20). The method of claim 1, The heating means (30) is a synthetic resin film bonding apparatus, characterized in that any one of the means for injecting hot air (air), the means for injecting sparks. The method of claim 1, The heating means 30 is fixed to the support (33) is installed so as to reciprocate along the longitudinal direction of each frame, the support (33), the screw rods 32 arranged in the drive motor (31) The screw is fastened to the synthetic resin film adhesive device, characterized in that the movement in the rotational direction of the drive motor is coupled to the guide rod (34) parallel to the screw rod (32) so as to be slidable. As a bonding method using the synthetic resin film bonding apparatus according to claim 1, It is installed so that the end of the film is exposed to the outside on the lower frame 10 in the state in which the upper frame 20 is raised, the exposure distance of the film end, the lower frame 10 at a position spaced a predetermined distance from the lower frame 10 (A) adjusting the film according to the base projection 40 protruding upward from the upper surface of the upper surface; A film fixing step (b) of lowering the upper frame 20 to fix the film between the respective frames 10 and 20; A film bonding step (c) of fusion by applying heat radiated by the heating means 30 to the exposed end of the film interposed between the frames 10 and 20; Method of adhering a synthetic resin film, comprising the step of obtaining the film (d) to take out the bonded film by raising the upper frame (20). delete The method of claim 7, wherein The support jaw 40 is able to move up and down at the same time in conjunction with the lifting and lowering of the upper frame 20, protruding upward than the upper surface of the lower frame 10 when rising, so as to contact the film end when setting the film, the film during the lowering Bonding method of a synthetic resin film, characterized in that the heat is applied to the exposed portion. The method according to claim 7 or 9, Method for adhering a synthetic resin film, characterized in that the cooling water is circulated by forming a cooling water passage in each frame so that the film interposed between the frames 10, 20 is not melted by the heating of the heating means (30). An edge of the upper film (1a) and the lower film (1b) is bonded by the synthetic resin film bonding method according to any one of claims 7 or 9, wherein a gas storage space is formed therein. The method of claim 11, Gas bag, characterized in that provided with a valve (2) for opening and closing the inner space on one side of the gas bag. The method of claim 11 or 12, The upper and the lower film is a gas bag, characterized in that the material of PET.

Images