JPS59118444A - Manufacture of sterilized bag - 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 Technical Field The method of the present invention is a method for continuously and automatically manufacturing a sterilization bag that can sterilize components in a state in which they are housed and maintain this sterile state. Regarding.

Prior Art This type of sterilization bag is made of a non-breathable plastic film such as polyethylene or polypropylene, and has a notch in a part of the bag, which is breathable but allows microorganisms to easily pass through the notch. The air-permeable part is covered with a sheet made of paper, non-woven fabric, plastic, etc., which has non-abrasive properties.

The sterilization bag having the above-mentioned structure has conventionally been molded based on the manufacturing method described below. That is, a thin plastic tube formed by the inflation 7-twist method is folded flat, cut at right angles to the longitudinal direction to obtain a predetermined length, and one end is closed with a well or other means to form a bag. The bag is then inflated by blowing air into the bag from the open portion at the other end or by inserting a rod-shaped object. In this state, a knife is pressed against an appropriate position on one side of the bag to make a partial incision in the thin film forming the bag.

The appropriate shape of this notch is + (plus), but -
(minus) shape or V-shape may be sufficient. after that,
This cut portion is covered from the outside with the breathable material. This breathable material has an adhesive coated on one side in the shape of a window frame so as not to impede the breathability of the cut portion. In addition, if you mark the position of the cut and the position of the breathable material on the bag by printing etc. in advance,
Cutting and pasting work becomes easier.

When using the above manufacturing method, at the beginning of the manufacturing process, a continuous plastic tube is cut into a size equivalent to an individual sterilization bag, and one end is rounded to form a bag-like packaging material. Therefore, all subsequent processes require processing each individual sterile bag one by one1.
Continuous processing is still difficult to apply to mass production methods, and also homogenizes the product.

It was difficult to take measures regarding sanitary control of the processing environment. For example, in the conventional method, it is stated that the work will be easier if marks are printed on the bag in advance to indicate where to cut into the bag or where to attach breathable material. This suggests that quality control is an issue.

Purpose The method of the present invention was created in view of the problems described in 1-1 that arise with conventional manual cutting or processing of individually separated packaging materials. We provide a manufacturing method that allows all processes to be carried out continuously and automatically, allowing efficient and homogeneous products to be molded in an environment with easy sanitary control. The purpose is to make this kind of sterile bag available for distribution to society.

Structure: In short, the method of the present invention involves making cuts on the circumferential surface of the tube at the stage of making a continuous tube made of plastic film, and then attaching a filter member to a position on the surface of the film that covers the cut, and then cutting the cut into the tube. A series of steps of sealing the continuous tube perpendicular to its longitudinal direction and cutting adjacent to the tube in a continuous and automatic manner so that the tube occupies a predetermined position relative to the entire product. This method is characterized by a method of applying the method, and an example of the method will be explained below with reference to the drawings.
, Example 21' Figure 41 shows an XF version of a sterilization bag which is a target object of the manufacturing method of the present invention, and the bag is made by placing objects to be sterilized such as parts therein, and then opening the open end of the bag. 7-Rules and Seal Department]7
1 in Figure 6
8 is a tube material made of non-breathable plastic film such as polyethylene or polypropylene, which constitutes the main body of the bag; , the cut may be V-shaped by - (minus) 1. 10 is a filter member pasted to cover the cut 8; 13;
17 is the bottom seal part where the bag bottom is formed by sealing the tube perpendicular to the longitudinal direction using a well etc., and 17 is the bottom seal part where the material to be sterilized is inserted at the open end of the bag. This is the seal part of the container that seals the container. FIG. 2 is a side view of essential parts of the apparatus for manufacturing the sterile bag, and the method of the present invention will become clearer as the configuration of the apparatus is explained.

In the figure, 1 is the bag body material made by folding a plastic film tube flat and winding it into a roll in the longitudinal direction.The axis is rotatably supported, and the tip is in an unfolded state. It is rolled out. A, B, D, and F are guide rolls that regulate the unwinding and conveying direction of the material 10, and 21 C, a vertical angle whose cross section when viewed from the side is pointed toward the flow side in the unwinding direction of the tube; The core has an isosceles triangular shape with
tA rotatable roller is applied.

The core 2 has a rectangular shape when viewed from above. Numeral 3 is also a core, which is plate-shaped as a whole, and a rotatable roller is provided at the tip of the core at a position corresponding to the rotary roller provided on core 2, and the rear end (is shaped like a fishtail). form,
Its size 1. That is, the length of the circumference is just appropriate for folding the tube. In other words, the length of approximately 1/2 of the inner circumference of the tube is defined as [1] of the fish house section. Further, the cores 2 and 3 are connected and integrated by a thin connecting rod 4 that passes between the corresponding rotating rollers. Of course, the length of the outer circumference of the cross section perpendicular to the longitudinal direction of cores 2 and 3 is
Any part thereof should be slightly shorter than the inner circumference of the tube 1, or have approximately the same length. The cores 2 and 3 are sandwiched between a pair of support rolls 5 which are rotatable from below at the constriction between the corresponding pairs of rotating rollers provided at the connecting portions of the two. Up near the shape part.
Each is supported from below via a tube material. Furthermore, as a result of moving the tube material 1 relative to the cores 2 and 3, even if the core receives a force that pushes it downstream in the transport direction due to friction on the inner surface of the tube, the support rolls 5 is inserted through the film material across the constriction between the pair of rotating rollers of the core, so the force pushing the tube in the transport direction is supported by the support roll 5. Cores 2 and 3
(is something that cannot be moved.),6
i-J: a film suppressing roller that presses the tube material against the core surface on the upper surface of the core 3 to ensure the operation of the mechanism 7 for drilling the next + (plus) shaped notch 8;
C faces the upper surface of the core 3 and is provided between the notch punching mechanism 7 and the labeler/roller/support roll] 1;
A labeler (known in the art for labeling) is used to attach and cover the filter member 10 made of paper, nonwoven fabric, plastic, etc., which has air permeability but does not allow microorganisms to easily pass through the notch 8 of the film. The filter member supply section 9 of the filter member supplying section 9 (having almost the same mechanism as the labeling device) continuously carries the filling section 10 and is connected to the labeler (not shown).
The tape-shaped member attached to the labeler is rolled up and supported inside the labeler, and the tape-shaped member 9 is fed out one by one each time a filter member is attached to the acute-angled end of the offering part C. When the labeler roll 11 is rotated, only the filter member 0 carried on the labeler roll 11 moves toward the labeler roll 11 and supplies the adhesive with its adhesive-applied surface facing the film surface. The filter member 10 has a sufficient area to cover the entire + (plus) notch 8, and adhesive is applied to the peripheral edge on the negative side in the shape of a window frame, so that the filter member 10 is placed on the film surface. When adhering, the adhesive should not impede the air permeability of the cut portion of the film.

By the action of a labeler (not shown), filter parts A and l are
'lO is automatically timed with the transport operation of the tube, and is attached to the film surface so as to cover the 8 notches in the center (the lower surface of the film is supported by the surface of the core 3). ), but its adhesion is dependent on the labeler and
This is ensured by being pressed between the roll/support roll pair 11 and the core 3. A notch 8 is provided on one side of the film, and the tube 1, which is coated and affixed with a filter member]O, is placed with the side to which the filter member 10 is attached facing upward when passing through the final end of the core 3. folded again,
The well] 2 installed midway through the conveyance by the guide roll D allows the bottom//-
13 is applied. At this time, the position of the notch 8 relative to the sterilization bag is determined, so if the installation position of the well 2 is appropriately adjustable in the tube transport direction, the position of the notch 8 relative to the sterilization bag can be changed. Become something. ] 4. In the bag-opening soccer game, the films constituting the tube are pulled together using a vacuum, and the bag is opened in advance.
5 is a cutter that cuts the adjacent part of the bottom sole 13 in the longitudinal direction (transfer direction of the tube) in order to finally form a sterile bag from the tube. Cut at right angles.

16 is a bag feeding claw which moves up and down at the same time to deliver the sterilized bag formed into the sole machine;
It is.

FIG. 3 is a detailed side view of the vicinity of the connecting punch 4 of the cores 2 and 3 in the device shown in FIG. A roller is provided which is rotated in the direction, as seen in the plan view of the device shown in FIG. On the other hand, rotating rollers are pivotally supported at positions corresponding to the upper and lower front ends of the core 3, and the outer periphery of each of these rollers is such that the cores 2 and 3 are connected in the longitudinal direction by an elongated connecting punch 4. The film forms a concave space between each other and constitutes a "necked part" as a whole.The film forming the tube is placed on the circumferential surface of the roller, and
It is designed to be transferred to the rear of the core.

A pair of support rollers 5, which are orthogonal to the longitudinal direction of the core 2.3 and rotatably supported, sandwich the constriction of the core in the vertical direction. The longitudinal position of the core 2.3, that is, the position with respect to the transport direction of the tube, is regulated by the rollers provided on the core and the support rollers.
I'm here. .

Therefore, the film passing through the constriction of the core is conveyed with the peripheral surfaces of the core roller and the support roller being sandwiched between both rollers.

FIG. 4 is a detailed side view of the filter member supply section C of the labeler, in which the filter member 10 is a soft tape-like member 9.
7. The tape-like member 9 is pasted at predetermined intervals on the recone-treated surface, and is transferred clockwise in the case of the illustration after being wrapped around an acute corner. However, the filter member 10 placed on it cannot follow the moving direction of the tape 9, and the supply section C
A part of it protrudes outward from the acute corner. In this state, when the notch part of the tube is conveyed, the supply part C moves downward at the right time and presses the protruding part of the filter member 10 to a predetermined position on the tube. Since the adhesive of member 10 acts on the part that is separating from 9, it moves from the supply part C to the tube side,
The labeler roll 11 reliably adheres to the film surface.

FIG. 5 is a schematic plan view mainly showing the core portion of the sterile bag manufacturing apparatus shown in the second figure. , support roll 5 and d-labeler/support roll 11' are clearly shown to be each pivoted at right angles to the longitudinal direction of the core. Further, the rotating rolls provided opposite to the cores 2 and 3 are provided so as to avoid the connecting rod 4 portion, and thin [1] rolls are used in parallel so as not to interfere with each other. Furthermore, the structure of the fish-shaped part provided at the rear end of the core 3 has a planar shape that widens at the end, and as mentioned earlier, the largest middle part (the middle part at the end) is the I-shape of the circumference of the tube. When the tube passes through the fish house, the tube becomes folded again. At this time, it is necessary to adjust the assembly structure of the fishmonger-like part to the core so that the cut part of the film previously provided is located in the center of the folded width of the tube.

The method for manufacturing the sterilization bag of the present invention using the above-mentioned apparatus is as follows.

After unwinding the plastic film formed into a tube shape and swallowing the core inside, incisions 8 are made with a knife on one side of the film at predetermined intervals, and then the incisions 8 After covering and pasting the filter member 10 made of paper, non-woven fabric, etc., which is breathable and impermeable to bacteria, the same tube is cut into sections at predetermined lengths according to the cut positions. Sealing at right angles to the direction to form a bottom seal]3, the /-ru portion 1:
A sterilization bag is formed by cutting adjacent to 3 at a right angle to the length direction and having a predetermined length, each having a cut 8 and a filter member 10 covering and pasting the cut 8, It should be noted that the processing timing between the above-mentioned steps and the positioning during tube transportation can be determined by applying techniques that have been implemented in conventionally known automatic processing machines of this type, so a detailed explanation will be omitted. As mentioned above, the sterilized bags formed by the manufacturing method consisting of continuous steps are transferred to the 7-1 machine by the bag feeding claw each time they are completed.
The bag is inflated when it is placed on a conveying device and passes through the compressed air blowing section, and when the bag is filled with the contents through the work input station, a part of the filled material to be sterilized is sealed. A sterile shell is inserted to hold down the contents so that they do not get caught in the bag, and if the results are good, the opening of the sterilization bag is sealed with a heat seal and finally discharged.

Note that clean air that has been sterilized and passed through a filter may be used as the compressed air for shaking the sterilized bag.

Effect: Since the manufacturing method of the present invention arranges each of the above-mentioned steps in order,5 it is possible to sequentially perform predetermined processing on the tube material that has been read once until the bag is finally formed. It is easy to transport accurately, and therefore the dimensions of each part can be finished with high precision, and it can be placed in automatic processing, making it possible to efficiently produce homogeneous products.

In addition, as mentioned above, automation is easy, and since workers do not touch each product with their hands, it is less likely that the products will get dirty due to careless mistakes, and the sanitary control of the work environment is very easy. Easy 2. It is easy to take measures that are compatible with the production of sterile bags of this type.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a sterilization bag formed according to the manufacturing method of the present invention when it is not filled with contents; FIG. 2 is a schematic side view of an apparatus for carrying out the method of the present invention; Figure 3 is a detailed side view of the vicinity of the core connecting rod in the device;
The same figure is an enlarged side view of the filter member supply section of the labeler, and FIG. 5 is a plan view mainly showing the core portion of the apparatus shown in the second figure. 1... Tubular plastic film, 2.3...
... Core, 4 ... Core connecting material, 5.11 ...
... Core support roll, 7. ... Notch drilling mechanism,
8... cut, 10... filter member,
12...Bottom fist seal welder, 13...Bottom seal, 14...Opened soccer, 15.
. . . Cutter, 16 . . . Bag feeding claw, C . . . Filter member supply section of the labeler.

Claims (2)

[Claims] (1) A tube-shaped plastic film is unwound in a rolled form, and a core supported by a roller or the like is inserted from the outside through the film forming the tube, and the part of the film where the cuts will be made is prepared in advance. After pressing and sliding on the core surface using a roller, etc., a notch is made, and then the notch is surrounded to have air permeability and bacteria impermeability, and is glued to the side in the shape of a window frame. After pasting the filter member coated with the agent to cover the cut portion, bottom sealing is applied to the cut portion at predetermined intervals and perpendicular to the transport direction of the tube, and then, or at the same time, A method of manufacturing sterile bags by cutting the tube adjacent to the bottom knoll. (2) After the adhesive-coated surface of the air-permeable and bacteria-impermeable filter member is attached to the film surface at the inner edge of the notch using a labeler, a roller that presses the member and the film surface is placed inside the tube. 2. The method for producing a non-shrinkable bag according to claim 1, which also serves as a support for a core inserted into the bag.