TWI822288B - Packaging method - Google Patents

Abstract

The present invention disclosed a packaging method, including: a packaging bag and an item delivered to a packaging area; separating an upper sheet and a lower sheet of the packaging bag by a predetermined distance, so that the bag is open; pushing the item into the opened bag; folding the front section of the two side sheets of the packaging bag inward, so that the front sections of the upper sheet and the lower sheet are drawn together and clamped the front section of the side sheets that had been folded inward; and heat seals the front sections of the upper sheet and the lower sheet that had drawn together.

Description

Packaging method

The present invention relates to a method of packaging an item in a packaging bag, such as a method of packaging a wafer box in a special packaging bag.

The semiconductor industry often uses wafer boxes to load wafers. For example, front opening unified pods (FOUP) can protect wafers during transportation within the factory, and front opening shipping boxes (FOSB) ) loading wafers protects the wafers during transportation between fabs. During the transportation process, each wafer box is usually packed in a special packaging bag to form a packaging body in order to prevent dust from the external environment from entering the interior and causing contamination and affecting the yield. At present, the special packaging bags include aluminum bags, anti-static bags, plastic bags, etc., with different characteristics and can be determined according to the needs. However, how to arrange the process of packaging a wafer cassette in the special packaging bag to be followed remains to be proposed.

The invention provides a packaging method for packaging an item in a packaging bag, which includes: sending the packaging bag and the item to a packaging area, in which a mouth of the packaging bag and a mouth of the item are connected. The first side (for example, the rear side or the bottom surface of the article) is opposite; an upper bag piece and a lower bag piece of the packaging bag are relatively separated by a predetermined distance, so that the upper and lower bag pieces of the packaging bag and the two The side bag pieces are unfolded to form a storage space sufficient to accommodate the item; push a second side (such as the front side or top surface) of the item to push the item into the storage space of the packaging bag; pair the two sides bag piece A front section close to the bag mouth performs an inward folding operation, so that the front section of the upper bag piece and the lower bag piece close to the bag mouth is relatively close and clamps the two side bag pieces that have been folded inward. The front section; and perform a heat-pressing sealing operation on the front section of the upper bag piece and the lower bag piece that are relatively close together.

a~e: steps

1: Packing bag

10:Items

101:First side

102: Second side

103:Top surface

11:Bag bottom

111:Door panel

12: Bag mouth

120: Accommodation space

13: Bag body

131: Bagging piece

132:Lower bag piece

133, 134: Side pockets

135:Tape

3: Desiccant

Figure 1 shows a schematic flow chart of a preferred embodiment of the packaging method of the present invention.

FIG. 2 shows a schematic view of the appearance of an article 10 to be packaged and a packaging bag 1 used to package the article 10 .

FIG. 3 shows that the packaging bag 1 is expanded to a size sufficient to accommodate the article 10 .

FIG. 4 shows the situation that the article 10 has been pushed into the packaging bag 1 .

Figure 5 shows a schematic diagram of an inward folding operation of the preferred embodiment.

Figure 6 shows a schematic diagram of the operation of a hot-press sealing industry in this preferred embodiment.

Figure 7 shows a situation in which a front section of the packaging bag 1 is bent downward and stuck.

Figure 1 shows a schematic flow chart of a preferred embodiment of the packaging method of the present invention. Figure 2 shows an article 10 to be packaged and a packaging bag 1 used to package the article 10. The packaging method is used to package the article 10 in the packaging bag 1 . The article 10 may be a wafer box for placing multiple wafers (not shown in the figure), such as a front-opening universal wafer box (FOUP) or a front-opening wafer transport box (FOSB). It can also be other items. As for the packaging bag 1, it can be the above-mentioned special packaging bag used for packaging the above-mentioned wafer box, but it is not limited to this.

As shown in FIG. 2 , the exemplary packaging bag 1 includes a sealed bag bottom 11 , an unsealed bag mouth 12 , and a bag body 13 located between the bag bottom 11 and the bag mouth 12 . The packaging bag 1 is initially in a flat, unexpanded state, with an upper bag piece 131 and a lower bag piece 132 of the bag body 13 overlapped together, and the bag mouth 12 In a closed state. As shown in FIG. 3 , the bag body 13 also includes opposite side bag pieces 133 and 134 located between the upper bag piece 131 and the lower bag piece 132 . When the packaging bag 1 is in the unexpanded state, the two side bag pieces 133 and 134 are respectively folded inward and sandwiched between the overlapping upper bag piece 131 and the lower bag piece 132. Therefore, as shown in Figure 2 They cannot be seen in .

In the embodiment shown in Figure 1, the packaging method of the present invention includes steps a to e, which are described as follows: Step a includes: as shown in Figure 2, sending the packaging bag 1 and the article 10 to a packaging area . In the packaging area, a bag mouth 12 of the packaging bag 1 is directly opposite to a first side 101 of the article 10 . The first side 101 of the article 10 is located opposite to a second side 102 of the article 10 . In this embodiment, the first side 101 of the object 10 is a rear side of the wafer box, and the second side 102 is a front side of the wafer box. However, which side of the wafer box in the packaging area should face the pocket 12 depends on the style of the wafer box and is not limited to the above.

This step b includes: as shown in Figure 3, relatively separating the upper bag piece 131 and the lower bag piece 132 of the packaging bag 1 by a predetermined distance A, so that the upper bag piece 131, the lower bag piece 132 and the two The side pockets 133 and 134 are expanded to form a receiving space 120 sufficient to accommodate the article 10 . In this embodiment, the lower bag piece 132 of the packaging bag 1 is sucked by one or more vacuum nozzles on a platform (not shown in the figure), and the upper bag piece 131 is sucked by one or more vacuum nozzles located above the platform and One or more vacuum nozzles of a liftable adsorption device (not shown in the figure) suck, and then the adsorption device moves upward with the upper bag piece 131, and the platform remains stationary, so that the upper bag piece 131 And the lower bag piece 132 is relatively separated. However, the adsorption device can also be configured to be immobile, and the platform can be configured to be raised and lowered, and then the platform moves downward with the lower bag piece 132 . Or, the adsorption device and the platform are configured to be lifted and lowered, and then the adsorption device moves up with the upper bag piece 131, and at the same time, the platform moves down with the lower bag piece 132.

Step c includes: pushing the second side 102 of the object 10 to push the object 10 into the containing space 120 of the packaging bag 1 , as shown in FIG. 4 .

This step d includes: placing the two side bag pieces 133 and 134 close to the bag mouth An inward folding operation is performed on a front section of the bag 12. As shown in Figure 5, as the inward folding operation proceeds, the upper bag piece 131 and the lower bag piece 132 are gradually relatively close to a front section of the bag opening 12, and finally , the front sections of the upper bag piece 131 and the lower bag piece 132 are brought together and sandwich the front sections of the two side bag pieces 133 and 134 that have been folded inward.

As shown in FIG. 6 , step e includes: performing a heat-pressing sealing operation on the front sections of the upper bag piece and the lower bag piece 131 and 132 that are relatively close together. Among them, the hot press sealing operation is preferably performed by a pair of hot press heads 2 .

Preferably, the above-mentioned packaging method of the present invention may further include: after completing the inward folding operation and before performing the hot-pressing sealing operation, performing an air extraction operation to extract the air in the packaging bag 1 so that A desired vacuum state is formed inside the packaging bag 1 . However, this step is not necessary, and how much air or how long the air needs to be extracted depends on the demand. The more air is extracted, the higher the vacuum degree of the vacuum state, and vice versa.

Preferably, the above-mentioned packaging method of the present invention may further include: after completing the hot-pressing sealing operation, as shown in FIG. 7 , bending the front sections of the upper bag piece 131 and the lower bag piece 132 downward to adhere. so that the front sections of the upper bag piece 131 and the lower bag piece 132 are close to the second side 102 of the article 10 . However, this step is not necessary, and in this embodiment, one or more tapes 135 are used to adhere the front sections of the upper bag piece 131 and the lower bag piece 132 .

Preferably, the above-mentioned packaging method of the present invention may further include: before sending the article 10 to the packaging area, as shown in Figure 2, placing one or more packages of desiccant 3 on the article 10. Usually, the desiccant 3 is placed on a top surface 103 of the object 10 . However, it is also possible to place the desiccant 3 on other surfaces of the object 10 , such as sticking the desiccant 3 on the surface of the object 10 . The first side 101 (rear side) or the second side 102 (front side). Furthermore, the packaging method of the present invention further includes detecting whether there is the aforementioned desiccant 3 on the article 10 before pushing the article 10 into the accommodating space 120 of the packaging bag 1. For example, an image detection method is used to perform the aforementioned detection. , ensure that there is the aforementioned desiccant 3 in the packaging bag 1 to absorb moisture.

In other embodiments, the above packaging method of the present invention may include Next or multiple steps: a humidity indicator card placement step: it includes placing one or more humidity indicator cards (Humidity Indcator Card, HIC) in the receiving space 120 of the packaging bag 1 before pushing the item 10 into the package bag 1 . This item is on 10.

A packaging bag labeling step: it includes affixing one or more labels (not shown in the figure) to the upper bag piece 131 of the packaging bag 1 before sending the packaging bag 1 to the packaging area.

An identification tag reading step: it includes reading one or more identification tags (not shown in the figure) on the item 10 before sending the item 10 to the packaging area, preferably before placing the above-mentioned desiccant 3 , such as barcode labels or radio frequency identification tags.

An article labeling step: it includes affixing one or more labels (not shown in the figure) to the article 10 before sending the article 10 to the packaging area. For example, it is attached to the top surface 103 of the article 10, and/or the first side 101 (rear side), and/or the second side 102 (front side).

An information pad removal step: it includes, after affixing the one or more labels to the item 10, removing one or more information pads (Info-pad, not shown in the figure) on the item 10, and removing the information pad. The one or more information pads that have come down are sent to a storage tank (not shown in the figure).

A nitrogen filling step: it includes filling the article 10 with nitrogen before sending the article 10 to the packaging area, thereby eliminating or reducing the moisture and oxygen in the article 10 .

An article internal state detection step: it includes detecting the humidity and oxygen concentration in the article 10 before sending the article 10 to the packaging area. For example, the aforementioned humidity and oxygen concentration may be detected before and/or after the nitrogen filling step is performed.

An item internal placement slot detection step: it includes detecting the status of multiple placement slots (not shown in the figure) in the item 10 before sending the item 10 to the packaging area. For example, when the item 10 When 10 is the above-mentioned wafer box, ideally each wafer should be correctly inserted into each slot in the wafer box. on the first side of the wafer cassette When the area of the surface 101 (rear side) corresponding to the slots is light-transmitting or transparent, a CCD camera (not shown in the figure) can be used to photograph the first side 101, and then an image detection method can be used to detect Whether there is no wafer inserted into the placement slot, and/or whether there is a situation where the wafer is inserted obliquely into the placement slot, and/or whether there is a situation where the wafer is inserted into the wrong placement slot.

A door panel detection step: it includes detecting a door panel 111 (see Figure 2) of the item 10 before pushing the item 10 into the accommodation space 120 of the packaging bag 1, for example, detecting the direction of the door panel 111 to determine the door panel 111 is installed backwards, and/or detects the direction of the keyhole (not shown in the figure) on the door panel 111 to determine whether the door panel 111 is locked. It is preferable to use an image detection method to perform the aforementioned detection.

In addition, the images or photos taken during the above-mentioned inspection process can be stored for use.

a~e: steps

Claims (15)

A packaging method for packaging an article in a packaging bag. The article has a first side and a second side opposite to each other. The packaging bag includes a sealed bottom, an unsealed mouth and a bottom located at the bottom of the bag. and a bag body between the bag mouth. The bag body includes an upper bag piece, a lower bag piece, and opposite side bag pieces located between the upper bag piece and the lower bag piece. The upper and lower bag pieces are The lower bag pieces are overlapped together, and the two side bag pieces are folded inward and sandwiched between the upper bag piece and the lower bag piece. The packaging method includes: Send the packaging bag and the article to a packaging area, in which the mouth of the packaging bag is directly opposite to the first side of the article; The upper bag piece and the lower bag piece of the packaging bag are relatively separated by a predetermined distance, so that the upper and lower bag pieces and the two side bag pieces are unfolded to form a storage space sufficient to accommodate the article; Push the second side of the item to push the item into the containing space of the packaging bag; An inward folding operation is performed on the front sections of the two side bag pieces close to the bag mouth, so that the front sections of the upper bag piece and the lower bag piece close to the bag mouth are relatively close and sandwich the two inwardly folded pieces. the front section of the side pocket panel; and A heat-pressing sealing operation is performed on the front sections of the upper bag piece and the lower bag piece that are relatively close together. The packaging method as described in request item 1, including: After completing the inward folding operation and before performing the heat sealing operation, an air extraction operation is performed to extract the air in the packaging bag. The packaging method as described in request item 1, including: After the heat sealing operation is completed, the front sections of the upper bag piece and the lower bag piece are bent upward or downward and then adhered, so that the front sections of the upper bag piece and the lower bag piece are close to each other. the second side of the item. The packaging method as described in request item 1, including: One or more packages of desiccant are placed on the item before it is sent to the packaging area. The packaging method as described in request item 4, including: Test the item for the presence of the one or more packages of desiccant before sending the item to the packaging area. The packaging method as described in request item 1, including: One or more humidity indicator cards are placed on the item before the item is pushed into the containing space of the packaging bag. The packaging method as described in request item 1, including: Before sending the packaging bag to the packaging area, one or more labels are affixed to the upper bag piece of the packaging bag. The packaging method as described in request item 1, including: One or more identification tags on the item are read before the item is sent to the packaging area. The packaging method as described in request item 1, including: One or more labels are affixed to the item before it is sent to the packing area. A packaging method as described in request item 9, including: After the one or more tags are attached to the item, one or more information pads (Info-pad) on the item are removed, and the removed one or more Info-pads are sent to a storage tank within. The packaging method as described in request item 1, including: Nitrogen gas is charged into the item before it is sent to the packaging area. A packaging method as described in request item 1 or 11, including: Before sending the item to the packaging area, the humidity and oxygen concentration in the item are tested. The packaging method as described in request item 1, including: Before the item is sent to the packaging area, the status of multiple placement slots in the item is detected. The packaging method as described in request item 1, including: One or more moisture indicator cards are placed on the item before it is sent to the packing area. The packaging method as described in request item 1, including: Before pushing the item into the containing space of the packaging bag, a door panel of the item is inspected.

Images