JP2627461B2 - Bag and its manufacturing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a thick bag for protecting an object to be packaged and an apparatus for forming the bag.

(Prior Art) Conventionally, as shown in FIG. 7, a partition wall (2) is provided inside a bag (1), and a package (4) is placed in a room (3) on one side across the partition wall. The other side room (5) is filled with inert gas to seal the opening edge (6) of the bag (1), and the inert gas gradually flows into the package (4) through the permeable partition wall (2). Is provided, which also has the function of temporarily protecting the article to be packaged (4) with the volume of gas filled in the room (5).

(Problems to be Solved by the Invention) However, since the bag is formed by previously forming a bag having an open end and opening the mouth of the bag to fill the packaged object and gas, the bag is efficient. In addition to the inability to perform the packaging operation, there are drawbacks in that the gas-filled room expands in a round shape and the whole bag becomes unstable.

(Means for Solving the Problems) In order to provide a stable bag and an apparatus for manufacturing the bag, the present invention mounts an article to be packaged in a groove of a cover film bent in a groove shape, Two base films are placed on the channel cover film so as to cover the encapsulation layer, and the base film is continuously welded to the periphery including both ends and both sides of the channel cover film to cover the base film. While forming pockets in the film, the base films are vertically sealed to form a plurality of isolated rooms between the two base films, and each of the chambers is filled with a fluid. To form a bag.

Also, a channel-shaped foamer for shaping the strip-shaped cover film to be transported in the vertical direction into a continuous groove shape, and a supply conveyor for feeding the encapsulating layer material at regular intervals into the shaped groove-shaped cover film. A guide roll group for supplying two strip-shaped base films in an overlapping manner on a groove-shaped cover film formed by the former, and a groove-shaped cover film on the downstream side of the former in the direction of flow of each of the films. A side sealer group that continuously welds both side edges and both side edges of two base films, and a top that cross-seal a tube formed by the grooved cover film and the base film at equal intervals downstream of the side sealer group. A longitudinal seal is formed by continuously welding in advance a sealer group and an intermediate portion of two base films upstream of the former. A vertical seal group, a vertical seal formed in the two base films formed by the vertical seal group and inserted into a vertically long space, and a front end is opened near the top sealer, and a fluid supply device is connected to a base end to form a bag. Form manufacturing equipment.

(Function) The apparatus according to the second aspect supplies a packaged object from the upstream side to a cover film that is folded into a groove shape by a forma, and covers a plurality of stacked base films from above, Further, on the downstream side of the former, both side edges of the above-mentioned grooved cover film and both side edges of the base film covered thereon are continuously welded by a group of side sealers.

On the other hand, before reaching the formatr, a vertical sealer is applied to the stacked base films by a group of vertical sealers, and a fluid is supplied between the respective vertical sealers via a pipe, and a plurality of base films are expanded by the fluid. In addition, since the cross seal is performed by the top sealer, the bag is sealed while containing the fluid.

(Example) In FIG. 1, a machine (11) having a groove-shaped cross section is installed on a machine (10), and a belt-shaped cover film (F1) supplied from below through a guide roll (12) is provided. It is formed in a continuous groove shape. The articles to be packaged (A) are fed into the formater by the conveyor (13) provided at the entrance of the above-mentioned formater. Therefore, as shown in FIG. 3, the articles to be packaged (A) are placed on the grooved cover film (F1). ) Is supplied.

On the other hand, two guide rolls (1
4) Two strip-shaped base films (F2) through (15)
(F3) is supplied, and these two films are bonded via seal rolls (16) and (17). As shown in FIG. 2, the above-mentioned seal rolls (16) and (17) are composed of a number of vertical seal roll groups, and two films are adhered by these roll groups to perform a vertical seal, and between the rolls. , Pipes (18) are provided between two films, and a fluid supply device (19) is provided at one end of each pipe as shown in FIG.

The roll (20) provided on the top of the former is a roll for adjusting the incident angle of the film, and the side sealers (21) (22) are provided behind the former. As shown in FIG. 4, the side sealer comprises upper and lower parts on both sides, and the rolls continuously weld both sides of the cover film (F1) and the base film (F2) (F3).

A transport roll (23) (24) formed by a urethane rubber belt is provided above and below the side sealer. The roll transports the film by sandwiching the film. Also, a pair of upper and lower top sealers ( 25) and (26) cross-seal the film between the items to be packaged (A) and (A), and the top end (18a) of the pipe is connected to the top sealer (2).
Extending close to 5), where a fluid such as air is discharged into the base film, the two base films are sealed with the air inflated. As a result, the packaged object (A) was placed on a base film (F2) having two chambers (30) and (30) filled with fluid as shown in FIG. 5, and further covered with a cover film (F1). The package can be formed continuously. It is also possible to form a package having more rooms (31) as shown in FIG.

(Effect) The present invention provides a side sealer that covers both side edges of a cover film (F1) continuously formed in a groove shape with a formater (11) and both side edges of a base film (F2) (F3) covered from above. While a group is welded to form a tube, a plurality of base films are longitudinally sealed by a group of vertical sealers, and a fluid is supplied between the plurality of base films by pipes (18). Since the film is cross-sealed in (26), a bag provided with a volume by a fluid can be formed more efficiently than the conventional one in which the object to be packaged is wrapped with a bag formed in advance as shown in FIG. Further, since such a bag has a plurality of base films adhered to each other by a vertical seal, the film does not expand in a round shape, a stable package can be formed, and each of the chambers filled with fluid can be formed. Because it is small and isolates and reduces the movement of fluid, the protection against the encapsulation layer increases, and even if some rooms are damaged, the overall protection is not lost. effective.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG.
Fig. 3 is a sectional view taken along the line III-III, Fig. 4 is a sectional view taken along the line IV-IV, Figs. 5 and 6 are sectional views of packaged products, and Fig. 7 is a conventional sectional view. It is explanatory drawing of an example. (A)… wrapped item, (F1)… cover film, (F
2) (F3) ... Base film, (11) ... Former,
(14) (15) ... guide roll group, (16) (17) ... vertical seal group, (18) ... pipe, (19) ... fluid supply device,
(21) (22) ... Side sealer, (25) (26) ... Top sealer.

Claims (2)

(57) [Claims] An object to be packaged is placed in a groove of a cover film bent in a groove shape, and two base films are placed on the groove-shaped cover film so as to cover the object to be packaged. The base film is continuously welded to the periphery including both ends and both sides of the shaped cover film to form a pocket accommodating an object to be packaged in the cover film, and the base film is vertically sealed to form two pockets. A plurality of isolated chambers are formed between the base films, and each of the chambers is filled with a fluid. 2. An apparatus for forming a bag according to claim 1, wherein said band-shaped cover film transported in a longitudinal direction is formed into a continuous groove. A supply conveyor for feeding the articles to be packaged into the grooved cover film at regular intervals, a guide roll group for supplying two band-shaped base films on the grooved cover film formed by the former in an overlapping manner, A side sealer group that continuously welds both side edges of the grooved cover film and both side edges of the two base films downstream of the former in the direction of flow of each film, and a groove on the downstream side of the side sealer group. A group of top sealers for cross-sealing the tubes formed by the cover film and the base film at equal intervals, and two sheets of paper on the upstream side of the former. A vertical seal group in which an intermediate portion of the film is continuously welded in advance to form a vertical seal; and a vertical seal group inserted into a vertically long space formed in the two base films by the vertical seal group, and a front end of the top sealer. A bag structure device constituted by a plurality of pipe groups that are open in the vicinity and connected to a fluid supply device at a base end.