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Paper cup, paper cup for acidic food

A paper cup and protective paper technology, which is applied in the field of paper cups and paper cups for acidic food, can solve the problems of multi-level stacking, buckling strength, transverse compressive strength, and high cost, etc., and achieves reduced weight per unit area and excellent mechanical strength Effect

Active Publication Date: 2018-12-21
TOPPAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(1) The buckling strength and transverse compressive strength of the paper cup are reduced, and deformation occurs when it is dropped, and the contents leak or are damaged
(2) The content becomes easy to overflow due to the deformation of the container when holding the cup
(3) When transporting or displaying, it becomes impossible to stack in multiple levels
However, in this method, in addition to the usual cup forming process, a processing process using a special top crimp mold is required, and the cost becomes high

Method used

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  • Paper cup, paper cup for acidic food
  • Paper cup, paper cup for acidic food
  • Paper cup, paper cup for acidic food

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0031] "paper cup"

[0032] figure 1 It is a perspective view which schematically shows the paper cup which concerns on 1st Embodiment of this invention.

[0033] figure 2 It is a cross-sectional view schematically showing the protective paper constituting the paper cup according to the first embodiment of the present invention.

[0034] Such as figure 1 As shown in , the paper cup 10 according to this embodiment has a bottom 1 and a main body 2 .

[0035] The bottom 1 and the main body 2 are composed of figure 2 A protective paper 100 as shown in is formed. Protective paper 100 as figure 2 As shown in the paper base material 101, and formed on the paper base material 101, that is, one side of the paper base material 101 (hereinafter referred to as "the first side") 101a, the reinforcing layer comprising cellulose nanofibers 102.

[0036] In addition, protective paper 100 such as figure 2 As shown in , there is a sealing layer formed on the surface of the reinforc...

manufacture example 1

[0120] Water was added to 18 g of conifer kraft pulp to adjust to 1800 g, and this was treated with a rotary blade mixer for 30 seconds to disperse the conifer kraft pulp sparsely in water.

[0121] The conifer kraft pulp was left to stand for 3 days in a state dispersed in water to fully swell the conifer kraft pulp.

[0122] The swollen coniferous kraft pulp was processed 8 times with millstone E-#46 and 6 times with G-#80 using a stone mill (trade name: Super MasscolloiderMK CA6-2, manufactured by Masuko Sangyo Co., Ltd.) After treatment, a white milky dispersion of cellulose nanofibers was obtained.

manufacture example 2

[0124] 30 g of coniferous kraft pulp was immersed in 600 g of water, and treated with a rotary blade mixer for 30 seconds to disperse the coniferous kraft pulp sparsely in water.

[0125] 0.3 g of TEMPO and 3 g of NaBr dissolved in 200 g of water in advance were added to the dispersed pulp slurry, and further diluted with water to adjust the whole to 1400 mL.

[0126] The inside of the system was kept at 20° C., and an aqueous sodium hypochlorite solution was added dropwise to the diluted pulp slurry so as to become 10 mmol with respect to 1 g of cellulose.

[0127] The pH of the diluent began to drop from the dropwise addition, but the pH of the diluent was kept at 10 by adding dropwise a 0.5N aqueous sodium hydroxide solution at any time.

[0128] Four hours later, just as the dropwise amount of the 0.5N aqueous sodium hydroxide solution reached 2.8 mmol / g, 30 g of ethanol was added to the diluent to stop the reaction.

[0129] 0.5N hydrochloric acid was added to the diluen...

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Abstract

The present invention is a paper cup having a bottom section and a body section that are formed from a barrier paper which has: a paper substrate; a reinforcement layer comprising cellulose nanofibersformed on the paper substrate; and a sealant layer formed on the reinforcement layer. After allowing the paper cup, which is disposed so that the bottom section faces downwards with respect to a concrete floor surface, to freefall five times from a height of 1m, when the paper cup is sandwiched between two parallel board surfaces and compressed in the direction of the height of the body section,the buckling strength is at least 350 N, and when the body section is squeezed 10mm at a height of 2 / 3 of the total height of the paper cup from the bottom, the lateral pushing strength is at least 4N.

Description

technical field [0001] The present invention relates to a paper cup and a paper cup for acidic food which are excellent in protection of contents, are easy to transport or handle, and are suitable for filling food and the like. [0002] this application claims priority based on Japanese Patent Application No. 2016-081201 for which it applied to Japan on April 14, 2016, and uses the content here. Background technique [0003] As containers for foods such as beverages, soups, noodles, and yogurt, paper cup containers are widely used. Due to increased interest in environmental issues in recent years, paper containers have been used in fields where plastic containers have been used until now. [0004] In addition, from the viewpoint of resource saving, weight reduction, and cost reduction, there is a tendency to reduce the weight per unit area of ​​cup base paper used in paper cups. When the weight per unit area of ​​the cup base paper is reduced, problems may arise from the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D3/22B32B1/02B32B27/10B32B29/00
CPCB32B29/00B65D3/22B32B27/10C08B15/02B32B27/32B32B7/12B32B2255/28B32B2255/26B32B2255/12B32B2250/02B32B2250/03B32B2250/40B32B2262/062B32B2307/50B32B2307/546B32B2439/02B32B2439/70B65D3/06C08L1/04D21H11/18D21H19/34D21H19/52D21H27/10D21H19/82B32B1/00B32B5/02B32B2262/04B65D3/04B65D3/10B65D65/40
Inventor 佐伯明子清水宏祐
Owner TOPPAN INC
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