Cartridge for viscous fluid object

A viscous flow and material technology, applied in the field of moisture-curing compositions, can solve the problems of damaged appearance, low productivity, easy to form wrinkles, etc., and achieve good moisture resistance, high productivity, and high storage stability.

Active Publication Date: 2008-02-13
DOW CORNING TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when manufacturing the cartridge described in Patent Document 1, in addition to the forming step of the cartridge main body, the winding step of the composite film is required, so the productivity is not high.
[0006] In addition, when the composite film is wound around the outer circumference of the tubular body, wrinkles are likely to be formed, and air remains in the wrinkled parts, which will spoil the appearance.

Method used

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  • Cartridge for viscous fluid object
  • Cartridge for viscous fluid object
  • Cartridge for viscous fluid object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Polyethylene resin is used as the injection resin, and a composite film having a layer structure in which a PE layer, Al foil, PET layer, and OPP layer are laminated in sequence is used as an insert film for a gas barrier layer, and is produced by injection molding as shown in Fig. 1 and Fig. 2 shows a cartridge body A having a cylindrical body portion provided with a gas barrier layer on the outer peripheral portion.

[0084] The obtained cartridge main body 1A has a shape in which one end of the cylindrical body part is closed with a top cover part 6 provided with a cylindrical mouth part (discharge part) 9 at the center, and has an inner diameter of 48 mm and a total internal length of 213 mm. The inner volume is about 381mm 3 . Its cross-sectional structure has the following layer structure: the whole has a plastic layer 7 of high-density polyethylene resin, the wall thickness of the cylindrical barrel part is 1.15 mm, and the outer peripheral part is provided with...

Embodiment 2

[0088] Using the same injection resin and composite film as in Example 1, a cartridge body B having a cylindrical body portion with a gas barrier layer provided on the inner peripheral portion shown in FIGS. 1 and 3 was manufactured by injection molding.

[0089] The shape and size of the obtained cartridge body B were the same as in Example 1. Its cross-sectional structure has a layer structure in which a gas barrier layer composed of a PE bonding layer, an Al foil layer, a PET layer, and the innermost layer of OPP is provided on the inner peripheral portion of the cylindrical body.

[0090] The cartridge main body B is the same as in Example 1. The sealing film 10 is welded on one side of the top cover part 6, the nozzle 4 is screwed and fixed, and the inner peripheral surface of the opening at the other end is coated with polybutene and micron. A mixture of crystal waxes (mixing ratio 6:4).

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Abstract

A cartridge for storing and dispensing viscous fluid materials providing excellent productivity and gas barrier properties and free from external appearance defects at the site of film wrapping. The inventive cartridge for viscous fluid materials has a plunger 3 inserted into the bottom portion of a cartridge body 2 fabricated using insert injection molding by integrally molding a cylindrical barrel portion 5 of a multilayer structure produced by laminating a gas barrier layer 8 including a metal thin layer 8a on the exterior periphery or interior periphery of a plastic layer 7, and a lid 6 covering the top of said cylindrical barrel portion.

Description

technical field [0001] The invention relates to a cartridge for storing and discharging a viscous fluid substance to a coating surface during use, and is especially suitable for a moisture-curing composition represented by a sealant. Background technique [0002] As a container for sealing agents, there is known a plastic cartridge in which a top cover having a discharge port is integrally formed on the upper end of a plastic cylindrical body, and after filling the sealing agent, a plunger is attached to an opening at the lower end of the cylindrical body. The above-mentioned barrel and top cover are usually made of polyethylene, and the wall thickness of the barrel is about 1 to 1.5mm in consideration of the required strength, weight, and economy. However, due to material characteristics, pores during molding, etc. There is some ventilation, and thus the insulation from the outside air is not sufficient. [0003] When such a container is used as a moisture-curing sealant c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D83/00
CPCB32B2307/7242B32B2255/10B32B2307/514B32B27/36B65D23/0835B32B27/08B32B2439/00B32B15/08B32B15/20B65D23/02B32B27/32B32B1/02B65D83/0005B32B2255/205B05C17/01B05C17/00576B65D83/00
Inventor 中山透森秀之
Owner DOW CORNING TORAY CO LTD
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