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Easy-to-open lid with excellent suitability for high-temperature opening

An easy-opening, excellent technology, applied in rigid containers, containers, packaging, etc., can solve the problems of sticking, hardening, time difference, etc., and achieve the effect of excellent opening, excellent adhesion, and easy opening operation.

Inactive Publication Date: 2009-03-25
TOYO SEIKAN KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a time difference between the cutting of the metal material and the cutting of the resin layer, and there is a problem that it becomes hard and sticky when opening, and the opening cannot be easily performed.

Method used

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  • Easy-to-open lid with excellent suitability for high-temperature opening
  • Easy-to-open lid with excellent suitability for high-temperature opening
  • Easy-to-open lid with excellent suitability for high-temperature opening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11～20

[0092] 2. Zirconium phosphate treatment (Examples 11-20, Comparative Examples 7-12)

[0093] A surface-treated metal sheet formed with a zirconium phosphate-based film was obtained under the same conditions as the above-mentioned cleaning process and spray treatment except that "Arozine N-405" manufactured by Nippon Pacificing Co., Ltd. was used as a treatment agent.

[0094] 3. Organic-inorganic composite treatment A (Examples 21-40, Comparative Examples 13-21)

[0095] · Polymer modulation

[0096] In the water-soluble polymer represented by the following formula (1),

[0097]

[0098] In the formula, Φ represents a benzene ring, X is a hydrogen atom or Z=-CH 2 N(CH 3 ) 2 , The introduction ratio of Z groups is 0.5 per benzene ring on average, and the average molecular weight of the polymer is 3000 when all X are hydrogen atoms.

[0099] ・Calculation of introduction rate of Z group

[0100] C, H, N, and S elements contained in the prepared polymer were quantified us...

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Abstract

An easy-to-open lid which comprises a resin-coated metallic sheet obtained by coating a metallic base with a polyester film through a primer, wherein the primer comprises an epoxy resin or polyester resin and a resol resin, the resol resin having 0.2-2.0 methylol groups per benzene ring. When an end of the opening tab is plunged to break the score for opening, no opening failure occurs and the opening operation can be conducted lightly. In particular, even when the lid is in the state of being heated at a high temperature, it has excellent suitability for high-temperature opening and does not pose that problem. It is excellent also in corrosion resistance, resistance to the contents, and retortion resistance.

Description

technical field [0001] The present invention relates to an easy-open end formed of a resin-coated metal plate. More specifically, it relates to an easy-open end that is heated to a high temperature and has improved opening properties when the notch is cut and opened by pressing the top end of a tab for opening. An easy-open end with excellent opening properties in the state. Background technique [0002] At present, as container caps that can be easily opened by hand without using special tools, so-called easy-open caps are widely used. From the standpoint of workability, as the metal material of the container cover, a resin-coated metal plate in which a surface-treated copper plate such as tinplate, TFS, or aluminum alloy is coated with a resin such as a polyester film is used. A notch is provided on the cover, and the notch reaches the middle of the thickness direction of the metal plate, and the opening part is divided, and a rivet is formed on the opening part by the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/092B32B15/09B65D17/32
CPCB65D17/165Y10T428/31529Y10T428/31515B65D2517/0082B32B7/12B32B15/08Y10T428/31522Y10T428/31678Y10T428/31681B65D2517/0014Y10T428/31688B32B27/36Y10T428/31511Y10T428/31942B65D17/4012B32B15/09B32B15/092B65D17/00
Inventor 八百井悦子只木康文末俊雄佐藤一弘藤田智志
Owner TOYO SEIKAN KAISHA LTD
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