JPS6160428A - Method of detecting defective seal of bag body - 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 (Field of Industrial Application) The present invention relates to a method for detecting a sealing failure in a sealed portion when a bag such as a patch is filled with contents and sealed by heat sealing.

(Prior art) After filling bags such as standing pouches and retort pouches with contents, they are sealed by heat sealing. ,
If solids or oils contained in tangerine juice or tangerine crushed foods adhere to the product, some parts will not be completely adhered by heat sealing, resulting in poor sealing. In the case of the above-mentioned mandarin orange juice, when a standing pouch (hereinafter referred to as a pouch) is hot filled with mandarin orange juice containing sand, the mandarin pouches will float to the surface of the liquid. Close the pouch filling opening and heat seal. If you try to do so, the tangerine crumbs will get caught in the heat sealing surface and cause cooling failure. Until now, there has been no suitable method to solve this problem.

(Problems to be Solved by the Invention) Since the appearance of the defective seal portion is the same as that of other complete seal portions, it is extremely difficult to detect its existence. It is an object of the present invention to provide a method that significantly enlarges the defective seal area and makes it easier to detect than the simple method VC.

(Means for solving the problem) The present invention provides a method for filling a bag body such as a pouch with contents.
-/L/ When sealing with iJl, a method for detecting cooling defects in the sealing part is to apply pressure from the outside of the body to make the defective parts of the sol protrude, and to check whether the protrusions are present or not. To detect? This is the characteristic of detecting bag seal defects.

(Function) In this case, the defective seal area in the cool part of the bag is crimped onto the sol roll and presents a smooth surface exactly like a high-quality heat roller area, so it is impossible to detect the defective seal area from the outside. It is extremely difficult.

The inventor of the present invention has experimentally found that if there is a defective part of the seal, if a pressurizer is applied from the outside of the body of the bag, the defective part of the seal is separated into two parts, causing a phenomenon in which the seal protrudes outward. Discover the facts and based on this, Mizumoto BA? None, and it is based largely on this experiment.

(Example) Figure 1 -G is a schematic process diagram of the pouch filling and sealing machine according to the present invention, in which the figure shows the pouch supplying process, B the pouch opening forming process, and O the filling and sealing process of the pouch. Filling process, D
1 is the closed pouch degassing process, E is the heat sealing process of the pouch opening, F is the cooling process of the heat sealing surface, and G is the completed discharge process.

Fig. 2 is a schematic diagram of the product in which crushed tangerine juice with paper is chewed in the above-mentioned beat sealing process, and 1 is 7
- On the side of the screen, 2 shows a defective part of the coolant where the mandarin orange juice has been bitten.

Figure 3 shows the pouch main body 3'I2 with seal failure location 2.
r: shows the next state after being sandwiched and pressurized by pressure plates 4.5 from the front and back; the person is a perspective view, and B is a side view. The figure clearly shows that the defective location 2 is greatly protruding.

Figure 4 is a cross-sectional view of the sealed area as shown in Figure 2, person-person', where 'person' shows a normal sealing area, and 'B' shows a defective area where a mandarin orange has been bitten on the sealing surface. As shown in FIG. 3, 0 indicates a condition in which external pressure is applied to make the defective area project.

Figure 5 shows a state in which the contact detector 6 detects a protruding defective spot 2 on the surface 1, and B detects the protruding defective spot 2 with the contact detector 6 via the roller 7. The arrow R indicates the moving direction of the subject.

FIG. 6 shows a state in which a protruding defective spot 2 on a cool surface 1 is detected in a non-contact manner using a proximity sensor 8, B shows a state 3 in which detection is performed via a roller 7, and arrows & indicate a state 3 in which detection is performed using a roller 7. indicates the direction of movement.

Figure WX7 shows the state of non-contact detection of a protruding defective spot 2 on the sealing surface 1 using an optical fiber sensor or laser beam sensor 9, and Figure B does this through a roller 7. The arrow R indicates the moving direction of the subject 1.

(Effect of the invention) /A' When a bag such as a household bag is filled with VC and sealed by heat sealing, even if there are defective seals in the sealed part, the appearance is exactly the same, so it is difficult to distinguish between them. If it is impossible, but if defective products are sent out in bales, will there be a serious accident during transportation or at the destination? There is a risk that this may occur. In this case, if the present invention is implemented and the defect detection device of the present invention is installed after the heat sol process of the pouch, and a separator is used to identify defective products, the above-mentioned accidents can be prevented in advance. There is.

[Brief explanation of drawings]

Is Figure 1 Person-G the invention? A schematic diagram of the process of the pouch filling and sealing machine to be implemented. Figure 2 is a diagram showing the defective sealing area on the cool side, Figure 13 is an explanatory diagram of the state where external pressure is applied to make the defective area of sol protrude, and Figure 4 is the diagram showing the sealing defective area on the rounded side. A diagram showing the state of a defective spot, Figure 5 is an explanatory diagram of a method for contact-based detection of a defective spot on the seal surface, and Figure 6 is an explanation of a method for non-contact detection of a defective spot using a proximity sensor. 7 are explanatory diagrams of a method of detecting a defective location in a non-contact manner using an optical fiber sensor or a laser beam sensor. 1...Heat-sealed surface, 2...Sealed parts, 3...Nugs, 4.5...
...Front and rear processing plates, 6...Touch detector, 7.
...Koro, 8...Proximity sensor, 9...
・・・・Hikari 7 Aino ζ- or Nichisa sensor agent
Patent Attorney Masamoto Akizawa and 2 others E F c7Δ' Unexamined Patent Publication No. 11HGI-60428 (3) A B C Valve 4 Figure Contents of amendment dated September 13, 1980 1. In the drawings, Figures 2 and 3 are corrected as shown in the attached sheet. "7t2 figure

Claims (1)

[Claims] (1) When a bag such as a pouch is filled with contents and sealed by heat sealing, a method for detecting a seal failure in the seal part is to pressurize the body from the outside to make the seal failure part protrude. A method for detecting a seal failure of a bag, the method comprising detecting the presence or absence of a protrusion.