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Pillow Packaging Bag, Pillow Type Packaged Body, Heat Seal Bar for Pillow Packaging Machine, and Pillow Packaging Machine

a pillow packaging machine and heat seal technology, applied in the field of pillow packaging bags, can solve the problems of difficult machining of seal bars, major problems such as piercing or scratching mutually adjacent pillow packaging bags, and achieve the effect of excelling in the ability to seal off foreign matter, avoiding fluctuations in the thickness of seal portions, and avoiding major problems

Inactive Publication Date: 2009-10-22
ORIHIRO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution effectively suppresses the formation of acute angles and pin holes, enhancing the packaging bag's resistance to piercing and scratching, thereby preventing leakage and damage during handling and transportation, while maintaining the integrity of the contents.

Problems solved by technology

However, as an inherent cause of occurrence of a pin hole, there has been found out a phenomenon in which the projection of a corner of a packaging bag pierces an adjacent packaging bag.
Similarly, in a collective packaged unit where an external bag is packed with small packaging bags in bulk, a major problem may arise.
It is difficult to cope with pin holes occurring from such causes merely by ameliorating the film material or the film configuration to improve the strength and other characteristics, and they often give rise to problems in protection or leakage of the content.
However, this provides no full solution as it involves such problems as susceptibility to angle formation due to a positional deviation in the curved portion, biting of the content into the seal portion due to the expansion of the area of the seal portion, sealing failure invited by an increase in the quantity of dirt, and a phenomenon of partial thinning of the thickness of the packaging material due to localized variation of the bearing at the time of sealing (hereinafter referred to as poly-slimming), further entailing difficult in machining the seal bar.
However, this technique described in Patent Document 4 takes no heed of the function of the bag to be filled with and to package a fluid content, such as liquid or viscous fluid.
As a result, folding due to the fall of the lateral seal portions may arise, still giving rise to angle formation at both side ends of lateral seals.
Especially according to this technique described in Patent Document JP6-127556A, as it is intended for use with light food, such as snacks, the lateral seal portions embody no consideration to prevent sealing failure caused by the intervention of the fluid content, and in this respect it is inadequate as a bag to be filled with and package a fluid content, therefore unable solve the problem of having to restrain pierced pin holes mentioned above.

Method used

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  • Pillow Packaging Bag, Pillow Type Packaged Body, Heat Seal Bar for Pillow Packaging Machine, and Pillow Packaging Machine
  • Pillow Packaging Bag, Pillow Type Packaged Body, Heat Seal Bar for Pillow Packaging Machine, and Pillow Packaging Machine
  • Pillow Packaging Bag, Pillow Type Packaged Body, Heat Seal Bar for Pillow Packaging Machine, and Pillow Packaging Machine

Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0101]A laminated film wound in a 120 mm-wide roll (biaxially oriented polyester (12 μm) / adhesive / non-extensible polyethylene (25 μm) / straight-chain low-density polyethylene (25 μm): 62 μm in total film thickness) was put to a continuous vertical packing machine ONP2030 (a product of Orihiro Co., Ltd.), and first vertically sealed with a sealing plate at 180° C. to be fabricated into cylindrical bags. Then, after being subjected to heat sealing of the lower lateral seal with a sealing plate at 180° C. for a width of 30 mm (for two bags), the bags were filled with 22 g each of agar at 70° C., which was the content, and the lateral seal for sealing the upper opening was heat sealed for a width of 30 mm (for two bags).

[0102]Finally, the bag was cut at the center of the lower lateral seal portion, and pillow type packaged bodies of 15 mm in lateral sealing width were prepared. By using a lateral sealing bar whose a and b dimensions (a, b) [mm] in the buffering region at both side ends o...

embodiment 2

[0108]Pillow type packaged bodies were prepared by using a heat sealing bar whose dimensions (a, b) [mm] of the buffering regions 1D were (7, 3) in the same way as Embodiment 1 except that the content volume was varied from 22, 32, 27, 17 and 12 g, and the results of similar vibration test and drop test to those for Embodiment 1 were evaluated. The results of evaluation, together the filling rate of each pillow type packaged body obtained from Formula (6), are collectively shown in FIG. 13. Incidentally, the maximum content volume required for figuring out the filling rate was supposed to be 32 g according to the following formula of calculation, with the density of agar being supposed to be 1 g / cm3.

[0109]It is evident from the results shown in FIG. 13 that the probability of sealing failure is high at a filling rate of over 85% and that the probability of pin hole occurrence due to the folding or bending of lateral seal portions is high at a filling rate of below 50%. Thus it is se...

embodiment 3

[0114]A laminated film wound in a 220 mm-wide roll (biaxially oriented polyamide (15 μm) / adhesive / straight-chain low-density polyethylene (60 μm): (75 μm) in total film thickness was put to a continuous vertical packing machine ONP2030 (a product of Orihiro Co., Ltd.), and first vertically sealed with a sealing plate at 180° C. to be fabricated into cylindrical bags. Then, after being subjected to heat sealing of the lower lateral seal with a sealing plate at 180° C. for a width of 40 mm (for two bags), the bags were filled with 200 g each of water, which was the content. The lateral seal for sealing the upper unsealed part was heat sealed for a width of 40 mm (for two bags). Finally, the bag was cut at the center of the lower lateral seal portion, and pillow type packaged bodies of 20 mm in lateral sealing width were prepared. The lateral sealing plate used then had a lateral sealing bar whose dimensions a and b at both side ends of the lateral seal portions then were 8 mm each, an...

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Abstract

A pillow packaging bag, a pillow type packaging body, a heat seal bar for pillow packaging machine, and a pillow packaging machine. The pillow packaging bag enabling the suppression of the occurrence of pin holes in a handling step and a transportation course after packaging comprises two lateral seal parts positioned roughly parallel with each other and a contents filling part held by the two lateral seal parts. Damping portions connected to the contents filling portion are formed near both side end parts of the lateral seal part from the border line thereof with the contents filling part near the center part of the lateral seal part toward the lateral seal part.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of and claims priority from U.S. patent application Ser. No. 11 / 662,855 filed on Mar. 14,2007, which claims priority from International Application No. PCT / JP2005 / 017687 with an international filing date of Sep. 27, 2005, which claims priority from Japanese Patent Application Serial No. 2004-290578, filed Oct. 1, 2004, all of which are incorporated herein in their entirety by reference.TECHNICAL FIELD[0002]The present invention relates to a pillow packaging bag for packaging foods, pharmaceuticals, medical tools or the like and preserving their quality, and more particularly to a pillow type packaging machine usable for manufacturing such bags or devices, and a heat sealing bar for use with the pillow type packaging machine.BACKGROUND[0003]Whereas various packaging materials for packaging various goods, such as beverages, foods, pharmaceuticals, chemicals, items for daily use and sundries, have been develo...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65B51/10
CPCB65D75/48B65B51/303Y10S383/903B65D33/18B65D33/00B65D33/08
Inventor FUNAKI, AKIRAFUKUSHIMA, YUJIIIZUKA, KATSUJITSURUTA, ORIHIRO
Owner ORIHIRO CO LTD
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