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Method and apparatus for manufacturing bag with spout member

A technology for the mouth and components, which is applied to the heating of the pre-heating step of the mouth components, in the field of production equipment of the above-mentioned production method, can solve problems such as liquid leakage, hard stuffing into bags, uneven temperature distribution, etc., to improve productivity and maintain Effect of drop strength and high drop strength

Inactive Publication Date: 2009-05-06
HOSOKAWA YOKO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] If this is not done properly, there will be an uneven temperature distribution on the surface of the mouthpiece, resulting in some fatal defects such as non-uniform flow of molten resin from the mouthpiece to the A-shaped gap in later steps. Liquid leakage, separation or pouch rupture due to localized reduction in film fusion bond strength, and mouthpiece deformation due to localized melting or unbalanced thermal expansion of the mouthpiece
Also, if the surface temperature of the mouthpiece is too high, a defective mouthpiece resin may be produced, and this defective product may fit inside the fusion-welded part and cause liquid to leak or be hard-packed into the bag

Method used

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  • Method and apparatus for manufacturing bag with spout member
  • Method and apparatus for manufacturing bag with spout member
  • Method and apparatus for manufacturing bag with spout member

Examples

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example 1

[0088] An oral member comprising a fusion-bonded portion having an outer diameter of 13 mm and an inner diameter of 11 mm was produced by injection molding polyethylene. Alternatively, a tubular film having a thickness of 300 μm obtained by expansion molding of polyethylene can be used to produce a bag having a width of 140 mm and a length of 300 mm, in which the outer periphery is covered except for the opening portion to be fixed with the mouthpiece. Fusion bonding. With this mouthpiece and this bag, you can use Figure 5 The device shown produces bags with mouthpieces.

[0089] The mouth held on the support is provided by using a heating device as a preheater in which linear infrared lamps with a temperature of 600°C are placed at the upper and lower parts at a position 3 mm from the surface of the mouth member. The components were heated for 4 seconds in each of preheating sections 1 to 3 at a rotational speed of 40 rpm. Subsequently, the opening part of the bag is fitted...

example 2

[0092] In addition to using an outer diameter of 17 mm and an inner diameter of 13 mm, the mouth member comprising a fusion-bonded portion, using a nozzle with an air suction port for the support, and starting extrusion with a sealed mold until opening the cooling mold makes the inside of the bag Air was drawn out, and a bag with a mouthpiece was produced in the same manner as in Example 1.

[0093] 100 of such bags with mouthpieces were prepared, and after each bag was filled with 500 mL of water, the bags were tightly plugged, compressed from the outside to obtain an internal pressure of 0.07 Mpa, and then stood upright for 5 minutes. No water leakage was observed in any of the bags with mouthpieces.

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Abstract

A method is provided for producing a bag with a mouth member (1) by liquidtightly melt-bonding a mouth member (1) comprising a thermoplastic resin and a bag unit comprising a relatively soft flexible film (2), in which uniform surface temperature of the mouth member (1) is realized, generation of an A-shaped gap (22) is prevented, and a bag with a mouth member (1) excellent in the liquidtightness of the meltbonded part between the mouth member (1) and the bag unit is produced; and also a production apparatus therefor is provided. The method comprises a preheating step of heating a tubular mouth member (1) while rotating it around the cylinder axis thereof, and a melt-bonding step of inserting the heated mouth member (1) into the opening part of a bag unit and pressing, and thereby melt-bonding the mouth member (1) to the opening part of the bag unit.

Description

[0001] Cross References to Related Applications [0002] This application claims Japanese Patent Application No. 2004-97452, filed March 30, 2004, Japanese Patent Application No. 2005-12590, filed January 20, 2005, and U.S. Provisional Priority to Patent Application No. 60 / 560,620, the contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a method of producing a bag with an oral member for containing various medical preparations, physiological saline, infusion solutions such as glucose solution and blood, and the like. More specifically, the present invention relates to a heating method for an oral member preheating step that is effective for water-tight fusion bonding of a tubular oral member comprising a thermoplastic resin to a pouch comprising a relatively soft flexible film department. The invention also relates to a production plant for the above-mentioned production method. Background technique [0004] Ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/02B29B13/02B31B19/84A61J1/10
CPCB29C65/02B29C65/1412B29C65/1422B29C65/1432B29C65/1496B29C65/7867B29C65/7879B29C66/0242B29C66/0342B29C66/1122B29C66/133B29C66/242B29C66/53262B29C66/53263B29C66/71B29C66/72321B29C66/72325B29C66/73921B29C66/81423B29C66/81431B29C66/83221B29L2031/7148B29K2023/00B29K2023/06B29K2023/0625B29K2023/065B29K2023/38B29K2067/003B29K2067/006B29K2081/06
Inventor 水尾隆之中川照章松本薰宏
Owner HOSOKAWA YOKO CO LTD