JP2006327604A - Manufacturing method for continuous bag made of nonwoven fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable automatic opening of the mouths of continuous bags manufactured from a nonwoven fabric through a mechanical means to enable continuous automatic filling with an article, thus improve productivity. <P>SOLUTION: The nonwoven fabric is pulled out in a strip form with a given width. A fresh air cutoff band of a given width, which is unpermeable to air, is placed near both side ends of the nonwoven fabric in the direction of pulling out the fabric. The nonwoven fabric is so folded that the cutoff bands are counter to each other, and sealing parts of a given width are formed perpendicular to the folded nonwoven fabric at a certain intervals. The sealing parts are provided with perforated lines or severing grooves so as to be severable. The cutoff band is about 0.5 to 5 cm width, and is attached with a film sheet or a hot melt resin. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for producing a continuous bag made of nonwoven fabric.

Non-woven fabrics are breathable, and the contents can be seen through the fiber entanglement, so that they can be made into a bag product with excellent design properties and are attracting attention.
Japanese Patent Laid-Open No. 5-4607

As shown in FIG. 3, the manufacturing method of the non-woven fabric body in the above is to fold the center of the non-woven fabric body 1 drawn out in a band shape with a constant width, and to form a seal portion 2 with a constant width at an appropriate interval perpendicular thereto. At the same time, the seal portion is provided with a separation groove and a perforation s.
Thus, when these packaging bags are used, they are separated from each other at the seal portion 2 at the production site of various products and used.
Since the automatic opening operation of the nonwoven fabric bag is difficult in this use, the opening operation is exclusively performed manually. In the present invention, the opening operation in the above is performed by a mechanical automatic operation, so that automatic filling of a packaged product into a non-woven bag is possible, thereby dramatically improving production efficiency. It is what.

The present invention provides a non-woven fabric body that is drawn out in a strip shape with a constant width, and an outside air shut-off zone with a constant width that prevents passage of air in the vicinity of both end portions in the direction in which the non-woven fabric body is pulled out. The non-woven fabric body is folded in a state of being joined, and a seal portion is formed with a constant width at appropriate intervals perpendicular to the folded non-woven fabric body, and a perforation or a separation groove is provided in the seal portion so that the non-woven fabric body can be separated. It is characterized by that.
The blocking band is about 0.5 cm to 5 cm and is made of paper, film sheet, hot melt resin or the like attached thereto.

In the present invention, in order to attach a barrier band of a certain width size that prevents the passage of air to the vicinity of both end portions of the nonwoven fabric body in the manufacturing process, the barrier band is adsorbed by a suction pad, that is, the nonwoven fabric body It can be automatically opened by adsorbing it with a pair of suction pads across the opening and pulling it in the opposite direction so that it can be automatically filled in the open state. It becomes easy and sealing after filling is easy. Thus, a series of operations such as opening, filling and sealing of the package are continuous flow operations of the non-woven fabric, and more specifically, the non-woven bag is repeatedly moved and stopped on the line repeatedly. It can be performed continuously and contributes to a dramatic improvement in production efficiency.
At this time, when the blocking body is made of a hot melt resin attached, the sealing position can be appropriately specified and implemented.

  FIG. 1 is a schematic diagram for explaining the production method of the present invention, wherein 1 is a non-woven fabric body drawn out in a band shape with a constant width, and 2 is a seal portion formed with a constant width dimension t at an appropriate interval perpendicular thereto. is there. In this case, 3 and 4 are guide rods for folding the belt-like nonwoven fabric body 1 into two in the traveling direction of the wide nonwoven fabric body 1, 5 is a guide roller, 6 is a folded nonwoven fabric after passing through the guide roller. It is a thermocompression bonding means for forming a seal portion 2 having a constant width dimension t at the appropriate interval with respect to the body 1, whereby a bag 7 having a constant volume is formed between the adjacent seal portions 2, 2. Become. This s is a perforation formed in the seal part, and the bags 7 and 7 adjacent to the part can be easily separated from each other. Although the perforation is shown in the illustrated example, it may be a muscle groove. Reference numeral 8 denotes a continuous bag winding roller formed as described above.

  By the way, the non-breathable non-breathing strips 9, 9 such as paper, film sheet, hot melt resin, etc. are attached to the vicinity a, b of the both ends where the nonwoven fabric body 1 is drawn out. In the illustrated example, a single-sided adhesive film sheet is continuously attached as the blocking band 9, and the reference numeral 10 is a pressing plate.

  The width m of the cut-off bands 9 and 9 in the above is about 0.5 cm to 5 cm, and the mounting location is generally a gap f of about 3 mm to 5 mm from each edge a and b. It will be the position that entered inward. This is to prevent the occurrence of a sealing failure during the sealing operation depending on the material of the blocking bodies 9 and 9, and in this case, a hot melt resin is attached. Can be formed directly on both side edges that do not require the gap f.

  FIG. 2 is a step in which the bag body 7 having the above-described configuration travels while intermittently moving and stopping intermittently to the conveyance line in the direction of the arrow. The suction cups 11, 11 adsorb the portions where the blocking bands 9, 9 are attached to each other at the bag mouth n of the bag mouth n. At the same time that n is opened, the article 13 to be packaged is filled from the hopper 12 into the opened bag mouth n. Thus, in the portion (c), the bag mouth filled with the article 13 to be packed is sealed by the thermocompression sealing means 14, and in the portion (d) after the sealing, the packaging bag is sealed. The detachment is performed.

  The present invention is configured as described above, and as is apparent from the above description, if it is possible to perform a continuous integrated operation from the manufacture of a non-woven fabric packaging bag as needed to the packing of the package as needed. It contributes to the improvement of work performance and production.

It is explanatory drawing explaining the manufacturing method of this invention. It is explanatory drawing of the state which inserts a to-be-packaged item with respect to the winding product of the nonwoven fabric bag manufactured by the above, and commercializes. The conventional manufacturing method is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nonwoven fabric body 2 Seal part 3 Guide rod 4 Guide rod 5 Guide roller 6 Thermocompression-bonding means 7 Bag 8 Take-up roller 9 Blocking body 10 Press plate 11 Suction cup 12 Hopper 13 Packaged object 14 Sealing means

Claims (2)

  A non-woven fabric body that is drawn out in the form of a strip with a constant width, and an outside air blocking zone with a constant width that prevents the passage of air to the vicinity of both ends in the direction in which the non-woven fabric body is pulled out A non-woven fabric body is bent, and a sealed portion is formed with a constant width at every appropriate interval of the folded non-woven fabric body, and a perforation or a separation groove is provided in the seal portion so that the non-woven fabric body can be separated. A method for producing a continuous bag with a nonwoven fabric characterized by the above. The method for producing a continuous bag using a nonwoven fabric according to claim 1, wherein the cut-off band is about 0.5 cm to 5 cm and has a paper, a film sheet or a hot melt resin attached thereto.

Images