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Structure forming a lubricating layer on the surface thereof

a technology of lubricating layer and structure, which is applied in the direction of packaging foodstuffs, caps, liquid handling, etc., can solve the problems of not being able to recover all, not being able to quickly discharge contents of this kind, and unable to quickly discharge contents, etc., to improve sliding property and improve slipping property

Inactive Publication Date: 2017-07-06
TOYO SEIKAN KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]Referring to FIG. 1, the structure of the present invention has a lubricating layer 3 formed on the surface of a base material 1 that comes in contact with a fluid substance, the lubricating layer 3 containing a liquid 5 and solid particles 7 (fine particles having a particle size of, for example, not more than 300 μm). That is, the fluid substance flowing on the surface of the base material 1 comes in contact with the lubricating layer 3 and, therefore, a greatly improved sliding property is exhibited to the fluid substance.
[0018]It has been known already that the sliding property to the content improves if a liquid layer is formed on the surface of a packing material such as container. If a viscous content is to be discharged from the packing material (e.g., container) having the above liquid layer formed on the inner surface thereof, then the content is discharged from the packing material in liquid-liquid contact. That is, the content flows down along the inner surface of the packing material not in solid-liquid contact but in liquid-liquid contact. Therefore, if an oily liquid is used that is immiscible with the content, then the sliding property can be improved to an aqueous substance that contains water. Further, if an aqueous fluid is used that is immiscible with the content, then the sliding property can be improved to an oily substance.
[0019]Here, the lubricating layer 3 possessed by the structure of the present invention includes two components, i.e., the liquid 5 and the solid particles 7. Therefore, a further improved slipping property is exhibited to the liquid substance (e.g., content in the container) than that of when the layer of liquid only is formed.
[0020]For example, as demonstrated in Experimental Examples appearing later, the slide-down velocities of the mayonnaise-like food are compared (for detailed conditions, refer to Examples) between the Experimental

Problems solved by technology

Discharging the content, however, becomes a serious problem when the content is a highly viscous substance such as mayonnaise or ketchup irrespective of the plastic container or the glass container.
Namely, the contents of this kind are not quickly discharged despite the container is tilted.
Besides, the contents tend to stay on the container wall and cannot be all recovered.
Particularly, the content stays in considerable amounts on the bottom of the container and is not all recovered.
Here, even according to means for improving surface properties by forming the liquid film on the surface of the base material as described above, it is not still possible to effectively prevent the content from adhering and remaining on the bottom of the container.
However, the sliding property expressed by the above container is very weaker than that expressed by the container provided with the liquid film.

Method used

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  • Structure forming a lubricating layer on the surface thereof
  • Structure forming a lubricating layer on the surface thereof
  • Structure forming a lubricating layer on the surface thereof

Examples

Experimental program
Comparison scheme
Effect test

examples

[0076]The invention will now be described by way of the following Experimental Examples.

[0077]Described below are the container, lubricating liquid (liquid 5 which is the component constituting the lubricating layer 3) and contents used in Examples and in Comparative Examples.

(1) Sheet Members

[0078]As sheet members, there were used a multi-layer sheet of a width of 75 mm and a length of 50 mm cut out from a multi-layer bottle that will be described later, and a glass plate of a width of 75 mm and a length of 50 mm.

(2) Bottle

[0079]There was used a directly blow-formed multi-layer bottle having a multilayer structure of the following layer constitution and having a capacity of 400 g.[0080]Inner layer: low-density polyethylene resin (LDPE)[0081]Intermediate layer: ethylene-vinyl alcohol copolymer (EVOH)[0082]Outer layer: low-density polyethylene resin (LDPE)[0083]Adhesive layers (among the inner layer, intermediate layer and outer layer): acid-modified polyolefin

(1) Liquid (Lubricating...

experimental examples 1 to 6

[0106]By using the multi-layer sheet as the material for forming the inner surface of the packing material, coating solutions obtained by dispersing the rice wax (particle size of 100 μm) in the edible oil A (lubricating liquid) were applied thereon with the solid particle amounts and application amounts as shown in Table 1, and the sliding properties were evaluated.

experimental example 7

[0107]By using the multi-layer sheet as the material for forming the inner surface of the packing material, coating solution was applied thereon in the same manner as in Experimental Example 1 but changing the solid particles into the rice wax (particle size of 50 μm) with the solid particle amount and application amount as shown in Table 1, and the sliding property was evaluated.

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Abstract

A structure including a base material formed in a predetermined shape, and a lubricating layer formed on the surface of the base material for improving sliding property to a fluid substance, the lubricating layer comprising a liquid and solid particles. The lubricating layer 3 formed on the surface of the base material exhibits very improved sliding property to the fluid substance and enables the structure to be favorably used as a packing material such as container and lid.

Description

TECHNICAL FIELD[0001]This invention relates to a structure having a lubricating layer formed by using a liquid on the surface thereof. More specifically, the invention relates to a structure that exhibits improved sliding property to fluid substances due to the lubricating layer.BACKGROUND ART[0002]The containers for containing fluid contents must be capable of favorably discharging the contents irrespective of the materials forming the containers. Discharging the content is not almost of a problem when the liquids having low viscosity such as water and the like are contained. Discharging the content, however, becomes a serious problem when the content is a highly viscous substance such as mayonnaise or ketchup irrespective of the plastic container or the glass container. Namely, the contents of this kind are not quickly discharged despite the container is tilted. Besides, the contents tend to stay on the container wall and cannot be all recovered. Particularly, the content stays in...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B5/16B32B27/06C09D191/00C09D5/00B65D41/04C10M171/06C10M109/00C10M165/00B65D23/02B65D1/02B32B17/06C09D7/12C09D7/65
CPCB32B5/16C10N2220/082B32B27/06C09D191/00C09D5/00C09D7/125C09D7/1283C10M171/06C10M109/00C10M165/00B65D23/02B65D1/0246B65D41/04B32B2264/00B32B2439/00C10M2209/12B32B17/06B32B33/00C09D201/00B65D1/0207B65D2231/00B65D2231/005C09D7/40C09D7/69C09D7/65B05D1/02C10M159/06C10M2205/18C10M2207/401B65D1/0223B65D1/00C10N2020/06C10N2050/02
Inventor OKADA, YOSHIAKIMIYAZAKI, TOMOYUKINYUU, KEISUKE
Owner TOYO SEIKAN KAISHA LTD