JP2006290404A - Packaging bag with slider type fastener - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a fastener from failing to function properly due to a slider damaged or clogged during the opening of the bag. <P>SOLUTION: The end of a partition sheet (10) on the opened position side of the fastener (5) attached to the mouth of a bag body (1) is heat sealed together with the front sheet (2) and rear sheet (3) of the bag body (1). Thus, the end of the bag body (1) on the opened position side of the fastener (5) is provided with a heat seal part (13) that closes part of the mouth of the bag body (1). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a slider-type packaging bag with a fastener including a fastener that can be opened and closed by a slider at an opening of a bag body.

  Conventionally, this type of slider-type packaging bag with a fastener is attached to the upper end of a V-shaped plastic partition partition sheet that is folded around a female track and a male track of a fastener that are engaged and disengaged with each other by a slider. Heat-sealing both side edges of the bag together with both side edges of the front sheet and back sheet of the bag body, and heat-sealing the partition sheet with the female track of the fastener to the upper end of the front sheet of the bag body. The fastener with slider is attached to the opening of the bag body, and a filling port for the contents of the bag is formed between the partition wall partition sheet on which the male track of the fastener is attached and the back side sheet of the bag body. After filling in, heat seal the bulkhead partition sheet with the fastener's male truck and the upper end of the back side sheet of the bag body It is so as to seal the filling opening of the bag Ri (see JP-T-2000-544065). To remove the contents of the bag, the opening of the bag is opened by moving the slider along the fastener from a closed position located at one end of the bag opening to an open position located at the other end. By breaking the lower end of the letter-shaped partition wall partition sheet, the bag is opened and the contents of the bag can be taken out.

Special table 2002-544065 gazette

  The above-described conventional slider-type packaging bag with a fastener can be opened by moving the slider from the closed position to the open position and breaking the lower end of the V-shaped partition partition sheet. When breaking the V-shaped partition wall partition sheet, the slider located in the open position may come off the fastener and jump up and hit directly the eyes of the person, etc. Also, the powder or granules in the groove of the female track of the fastener When the shaped article enters and the engagement between the groove of the female track of the fastener and the protrusion of the male track is released and the end of the fastener is opened to the end of the fastener, the groove of the female track and the protrusion of the male track are no longer Cannot be fitted, the bag cannot be closed even if the slider is moved to the closed position, and the fastener cannot be used.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a slider type fastener-equipped packaging bag that operates safely and reliably to prevent damage to the slider due to opening of the bag or failure of the fastener due to clogging.

  The slider-type packaging bag with a fastener according to the present invention heats the end of the partition partition sheet on the opening position side of the fastener attached to the opening of the bag body together with the front side sheet and the back side sheet of the bag body. A heat seal portion for closing a part of the opening of the bag body is provided at the end on the open position side.

  Since the present invention has the above-described configuration, the slider does not come off from the fastener when the bag is opened, and it is safe without jumping upward and hitting the human eyes directly. Even if the engagement with the protrusion is released and the fastener is opened to the opening position, the opening to the end of the fastener's opening position is prevented, and the fitting state between the female track and the male track of the fastener can be maintained. Can be opened and closed over a long period of time without being disabled.

  In the drawing, reference numeral 1 denotes a plastic sheet bag body. The bag body 1 has a front sheet 2 and a back sheet 3, and a fastener 5 that can be opened and closed by a slider 4 is attached to the opening. As shown in FIG. 4, the fastener 5 is composed of a female track 7 having a groove 6 that engages and disengages with the slider 4 and a male track 9 having a protrusion 8, and the female track 7 of the fastener 5 is folded at the center. A V-shaped partition wall partition sheet 10 made of a plastic sheet is attached to the upper end of one partition wall 11, and the male track 9 of the fastener 5 is attached to the upper end of the other partition wall 12 of the partition wall partition sheet 10. A thin-walled rupture portion is formed at the V-shaped lower end of the partition wall partition sheet 10 so that it can be easily cut by hand.

  A fastener 5 comprising a female track 7 having a groove 6 and a male track 9 having a projection 8 is provided with a slider 4, and the slider 4 is moved along the fastener 5 from the closed position shown by a solid line in FIG. The fastener 5 can be opened and closed by moving to the open position indicated by the dotted line or from the open position of the two-dot chain line to the closed position of the solid line.

  Both ends of the V-shaped partition wall partition sheet 10 having the fastener 5 are heat-sealed together with both ends of the front side sheet 2 and the back side sheet 3 of the bag body 1, and the upper end of the front side sheet 2 of the bag body 1 is female. The fastener 5 having the slider 4 is attached to the opening of the bag body 1 by heat-sealing to the upper end portion of the partition wall 11 of the partition wall partition sheet 10 having the track 7, and the back side sheet 3 of the bag body 1 and the partition wall partition sheet. A filling port for the contents is formed between the ten partition walls 12. Therefore, after filling the bag body 1 with the contents from the filling port, the bag body 1 is heat sealed by heat-sealing the upper end of the back side sheet 3 of the bag body 1 and the upper end of the partition wall 12 of the partition partition sheet 10. Can be sealed.

  An end portion of the bag body 1 on the opening position side of the fastener 5 attached to the opening portion of the bag body 1 is provided with a heat seal portion 13 that closes a part of the opening portion of the bag body 1. Is formed by heat-sealing a part of both the partition walls 11 and 12 of the partition wall partition sheet 10 on the open position side of the fastener 5, a part of the surface side sheet 2 and a part of the back side sheet 3. The heat seal portion 13 preferably ranges from the edge of the fastener 5 on the open position side to the length of the slider 4 positioned at the open position. In particular, the length of the slider 4 is preferably 1/3 or more. Although the heat seal part 13 can also be lengthened to the position beyond it, in that case, the opening part of the bag main body 1 becomes small. Further, the heat seal portion 13 is formed in a trapezoidal shape as shown in FIG. 1, but may be formed in a triangular, rectangular or square shape.

  Reference numeral 14 denotes a stopper for stopping the slider 4 attached to both side edges of the fastener 5 provided at the opening of the bag body 1 at the open position and the closed position. In the present invention, when the lower end of the V-shaped partition wall partition sheet 10 is cut by hand in order to take out the contents in the bag body 1, the heat seal portion 13 is provided below the slider 4 located at the open position. Since the heat seal portion 13 receives the force of tearing the partition wall partition sheet 10 by hand, the slider 4 does not come off the fastener 5. In addition, even when the slider 4 is moved to the open position and the fastener 5 is opened, the groove 6 of the female track 7 of the fastener 5 and the protrusion 8 of the male track 9 are engaged until 1/3 of the slider 4. Even when the slider 4 is positioned at the closed position, the groove 6 of the female track 7 of the fastener 5 and the projection 8 of the male track 9 are disengaged and the fastener 5 is opened to the open position. The heat seal portion 13 provided below the fastener 5 opening position is prevented from opening to the end of the fastener 5 opening position, and the fitting state of the fastener 5 female track 7 and the male track 9 is prevented. Since it is held, the fastener 5 does not become unusable.

It is the front view which notched and showed a part of packaging bag by this invention. It is the top view which showed a part of packaging bag by this invention in the cross section. It is the enlarged plan view of FIG. 2 which showed a part of packaging bag by this invention in the cross section. It is the perspective view which notched and showed a part of packaging bag by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag main body 2 Front side sheet | seat 3 Back side sheet | seat 4 Slider 5 Fastener 6 Groove 7 Female track 8 Protrusion 9 Male track 10 V-shaped partition partition sheet 11 Partition 12 Partition 13 Heat seal part 14 Stopper

Claims (1)

A bag is attached to the end of the bag body on the opening position side of the fastener by heat-sealing the end of the partition partition sheet on the opening position side of the fastener attached to the opening of the bag body together with the front side sheet and the back side sheet of the bag body. A slider-type packaging bag with a fastener, which is provided with a heat seal portion that closes a part of the opening of the main body.

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