JP2921359B2 - Non-sticky rice scoop and rice scoop - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-sticky rice scoop and rice scoop used for placing rice in a container.

[0002]

2. Description of the Related Art Conventional rice scoops and rice scoops are often made of a synthetic resin such as polypropylene, and these tend to adhere to rice grains and rice cake (a viscous substance composed of starch and fat). As a means for solving such a problem, a method of blending a raw resin with a fluororesin powder and molding (Japanese Utility Model Publication No. 55-3043), or forming an impregnated carrying layer of fluororesin fine particles on the surface of a synthetic resin. Non-adhesiveness using fluororesin, such as the method (Japanese Utility Model Publication No. 3-49644) and the method of making the rice scoop and the entire rice scooping member made of fluororesin (Japanese Utility Model Publication No. 61-75238). There are many examples.

[0003]

However, in rice scoops and rice scoops using these fluororesins, rice grains are hardly formed at first, but the fluororesin on the rice scoops and the rice scoop receiving surface may fall off. When scratched, rice grains are likely to be formed, and there is a problem that the performance does not change immediately with untreated synthetic resin rice scoop and rice scoop.

[0004] The present invention solves the above-mentioned problems, and imparts non-adhesiveness, surface lubricity, and abrasion resistance to a resin, and can easily remove rice grains and rice on the surface for a long period of time. A primary object is to provide a non-sticky scoop and scoop that can maintain its performance.

It is a second object of the present invention to provide a non-adhesive scoop and a scoop receiver having a surface gloss and having no surface irregularities on the order of submicrons.

A third object of the present invention is to provide a non-adhesive scoop and a scoop rest having excellent chemical resistance so that the organopolysiloxane does not fall off even by a detergent or the like.
The purpose of.

A fourth object is to further improve the non-adhesiveness, surface lubricity, abrasion resistance and chemical resistance.

[0008]

A first means for achieving the first object is a non-sticky scaffold formed by adding an organopolysiloxane having a reactive functional group to a synthetic resin material. And rice scooping.

A second means for achieving the second object is to use dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, alkyl-modified polysiloxane as an organopolysiloxane having no reactive functional group. And the like having a reactive group.
A non-tacky scoop and a scoop receiver characterized by being mixed with luganopolysiloxane and added to the synthetic resin material .

[0010] Further, a third object for achieving the third object is provided.
Means are vinyl group, epoxy group,
For organopolysiloxane having at least one of amino group, carboxyl group, methacryloxy group, alkoxy group, silanol group, allyl group, alkyl group, chloroalkyl group, fluoroalkyl group, polyether group, alcohol group and mercapto group Had non-sticky rice scoop,
And rice scooping.

A fourth means for achieving the fourth object is that the organopolysiloxane is contained in an amount of 0.5 to 30% by weight.
Non-adhesive rice scoop and rice scoop received.

[0012]

As described above, the reactive functional group is added to the synthetic resin material.
By adding an organopolysiloxane having the following characteristics, the synthetic resin material can improve the non-adhesiveness, surface lubricity, and abrasion resistance derived from the organopolysiloxane, and the molded rice scoop and the rice scoop are rice grains. Yeast is hard to adhere, and this performance can be maintained for a long time. Furthermore, organopolysiloxanes having no reactive functional groups
By adding siloxane, there is a surface gloss,
It becomes a rice scoop and rice scoop without surface irregularities.

[0013]

EXAMPLES (Example 1) Master pellets of polypropylene containing 40% by weight of an organopolysiloxane having a reactive functional group were prepared, and pellets of polypropylene (manufactured by Mitsui Petrochemical Co., Ltd., J
900), and the mixture was adjusted so that the concentration of the organopolysiloxane became 7.5% by weight. Then, the mixture was heated and kneaded with an injection molding machine, and the nozzle temperature was 190 ° C., the mold temperature was 30 ° C., and the injection speed was 5.8 mm / Injection molding was performed under the conditions of seconds to prepare a rice scoop with organopolysiloxane dispersed in polypropylene. As shown in FIG. 1 (a), the rice scoop prepared in this manner is dotted with particles containing a large amount of an organopolysiloxane having a reactive functional group in the synthetic resin material, and some of the particles were exposed on the surface. It has an internal structure.

Further, when an organopolysiloxane having a reactive functional group such as a vinyl group is added to the synthetic resin material, a reactive active point is generated on the synthetic resin material side by mechanical shear as shown in FIG. Thus, the two can be chemically bonded.

In addition to this method, as a means for bonding the synthetic resin material and the organopolysiloxane, a method in which a vinyl monomer is polymerized on an organopolysiloxane having a reactive functional group may be used.

When an organopolysiloxane having a reactive functional group such as a vinyl group is added to a synthetic resin material, the two are chemically bonded via the reactive functional group, so that the organopolysiloxane having no reactive functional group is used. Compared to the case of using, it is considered that the organopolysiloxane is less likely to fall off the surface of the molded article, but in consideration of the difference in dispersibility and surface gloss of both in the synthetic resin material,
It is hard to say which one is superior, and in some cases, both may be used in combination.

The reactive functional group includes a vinyl group,
Epoxy groups, amino groups, carboxyl groups, methacryloxy groups, alkoxy groups, silanol groups, allyl groups, alkyl groups, chloroalkyl groups, fluoroalkyl groups, polyether groups, alcohol groups, mercapto groups, and the like. The reactive functional group is chemically bonded to the synthetic resin material as an active site.

Example 2 Dimethylsiloxane (a silicone oil having a viscosity of 1), which is one of organopolysiloxanes having no reactive functional group
3000 cs: A master pellet of polypropylene containing 40% by weight of Dow Corning Silicone Toray Silicone Co., Ltd., SH200) was prepared and added to the pellet of polypropylene in the same manner as in Example 1 to give an organopolysiloxane concentration of 7.5% by weight. % Rice scoop was formed. Unlike the case of using a reaction type organopolysiloxane, the rice sashimi thus produced does not contain any particulate matter, and as shown in FIG. 1 (b), the organopolysiloxane is uniformly dispersed in the synthetic resin material. It became a scrambled rice with good surface gloss.

Furthermore, when the shackle and shackle holder are formed of a synthetic resin material to which organopolysiloxane is added, the mold releasability from the mold is excellent, so that it is not necessary to apply a mold release agent to the mold. Is also simplified.

The chemical structural formula of dimethylpolysiloxane, which is a typical organopolysiloxane, is as shown in (Chemical Formula 1).

[0021]

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[0022] In the case of manufacturing a molded article the material formed by adding O organopolysiloxane based synthetic resin material, leave first prepare a master pellet containing a high concentration of the organopolysiloxane, the purpose of this It is practical to obtain a molded product by blending the organopolysiloxane so as to have an appropriate organopolysiloxane concentration according to the above conditions.

Further, when coloring the synthetic resin material, a pigment such as TiO2 is compounded, and a phosphorus-based, sulfur-based, phenol-based deterioration inhibitor or a filler such as a glass fiber filler is compounded. Then, the mixture is heated and kneaded by an injection molding machine to perform injection molding.

The concentration of the organopolysiloxane is from 0.5 to
Although 30% by weight is practical, sufficient non-adhesion, surface lubricity, and abrasion resistance can be obtained even at a relatively low concentration of about several percent.

However, when the concentration of the organopolysiloxane is less than 0.5%, the effect is not sufficiently exhibited.
%, The decrease in rigidity and hardness increases,
It is not practical because of the high cost.

Example 3 As in Example 1, 40 parts by weight of an organopolysiloxane having a reactive functional group was used in 100 parts by weight of polypropylene.
12.3 containing polypropylene master pellets
Parts by weight, 40% by weight of non-reactive organopolysiloxane
10.8 containing polypropylene master pellets
A scoop was added to the mixture by adding 4.0 parts by weight of an organopolysiloxane having a reactive functional group and 3.5% by weight of an organopolysiloxane having no reactive functional group.

A rice scoop made of only commercially available polypropylene (Comparative Example 1) and a rice scoop with an impregnated carrier layer of fluororesin particles formed on the surface of polypropylene (Comparative Example 2)
Is shown in Table 1 as a comparative example.

[0028]

[Table 1]

The adhesive strength of rice is measured by placing a cylinder on the flat surface of a rice scoop, pressing the rice under an arbitrary pressure from above, pulling the cylinder horizontally, and measuring the force at the time of starting the movement. It was measured. In other words, it can be said that the lower the value, the smaller the adhesive strength and the better.

In the abrasion test, the surface of the rice scoop was rubbed 300 times with a nylon scourer, and the adhesive force of rice was measured in the same manner to evaluate the change in adhesive force due to abrasion.

As shown in Table 1, the scallops containing organopolysiloxane had lower initial values and values after the nylon scouring abrasion test than those of Comparative Examples 1 and 2, and were non-adhesive and abrasion resistant. Significant improvement in sex was observed.

Although the embodiment has been described with reference to the scramble, the same effect can be recognized in the scramble.

In addition, it was also recognized that the slidability was improved in the scaffolding, so that the durability of the forehead was improved.

In each of the embodiments, the rice scoop and the rice scoop are formed based on the synthetic resin material to which the organopolysiloxane is added. For example, the rice scoop and the rice scoop are used for electric appliances such as rice cookers. The same effect can be obtained.

[0035]

As described above, the rice scoop and the rice scoop of the present invention are made by adding an organopolysiloxane to a synthetic resin material to impart non-adhesiveness, surface lubricity, and abrasion resistance to rice grains or rice grains. The toughness is hard to adhere, and the performance is maintained for a long time.

When an organopolysiloxane having a reactive functional group is added, the organopolysiloxane is chemically bonded to the synthetic resin material, so that the organopolysiloxane does not fall off even with a detergent or the like. Become.

Further, by adding an organopolysiloxane having no reactive functional group, a scruff with a surface gloss and no surface irregularities can be obtained and a scruff can be obtained.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of the vicinity of the surface of a molded product when (a) an organopolysiloxane having a reactive functional group is added. (B) The surface of a molded product when an organopolysiloxane having no reactive functional group is added. Enlarged sectional view of the vicinity

FIG. 2 (a) Model diagram for forming reactive active sites in polypropylene (b) Model diagram showing bonding reaction between polypropylene and organopolysiloxane having a reactive functional group

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Particle containing much organopolysiloxane which has a reactive functional group 2,4 Synthetic resin material 3 Organopolysiloxane which does not have a reactive functional group

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshio Arai 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Takashi Matsuo 3-21 Morimoto, Itami City, Hyogo Prefecture In-house (56) References JP-A-2-205545 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47J 43/28 A47J 47/16

Claims (6)

(57) [Claims] 1. A non-sticky scoop and a scoop receiver formed by adding an organopolysiloxane having a reactive functional group to a synthetic resin material. 2. An organopolysiloxane having a reactive group in a synthetic resin material.
Organopoyl having no reactive functional group with nopolysiloxane
2. The method according to claim 1, wherein the siloxane is added together.
Non-sticky rice scoop and rice scoop. 3. The non-adhesive rice scoop and rice scoop according to claim 1, wherein the synthetic resin material is polypropylene, polyethylene, acrylonitrile-butadiene-styrene, polystyrene, polyethylene terephthalate, polybutylene terephthalate, polymethyl methacrylate, or polyamide. received. 4. The method according to claim 1, wherein dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, alkyl-modified polysiloxane or the like is used as the organopolysiloxane having no reactive functional group. Non-sticky rice scoop and rice scoop. 5. Reactive functional groups such as vinyl group, epoxy group, amino group, carboxyl group, methacryloxy group, alkoxy group, silanol group, allyl group, alkyl group, chloroalkyl group, fluoroalkyl group, polyether group, and alcohol 2. The non-tacky scoop and scoop receiver according to claim 1, wherein an organopolysiloxane having at least one of a mercapto group and a mercapto group is used. 6. An organopolysiloxane having a content of 0.5 to 30.
2. The non-tacky rice scoop and rice scoop as claimed in claim 1, wherein the rice scoop is contained by weight.