JP2002166984A - Spray bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spray bottle wherewith no environmental pollution occurs, and while transparency having no impediment practically is maintained, high chemical resistance to alkaline chemical liquid or the like and high physical strength such as dropping strength at low temperatures can be provided. SOLUTION: In the spray bottle 2, as a polypropylene resin, a polypropylene resin contains a polyethylene resin of 2.0-20.0 wt.%, and particularly the polyethylene resin is manufactured using a metallocene polymerization catalyst. The spray bottle 2 has a physical strength such that it is not injured in a drop test from a height of 0.8 m or more under conditions of 5 deg.C, and a haze value showing a degree of transparency is 30-85%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray bottle for containing a chemical such as a cleaning agent and spraying the chemical onto a surface to be cleaned or the like with an attached spray nozzle.

[0002]

2. Description of the Related Art Conventionally, polyethylene terephthalate resin, polyvinyl chloride resin, polyethylene resin and the like have been used as resin materials for spray bottles. Such a spray bottle usually constitutes a spray device together with a cap with a spray nozzle detachably attached to an upper end opening thereof.

[0003]

However, in a spray device for spraying a cleaning agent or the like, a transparency bottle is required from the viewpoint of visibility such that the remaining amount of the liquid content can be easily confirmed as a spray bottle for containing the cleaning agent or the like. In many cases, as a resin raw material used for the molding, a condensation polymer resin such as a highly transparent polyethylene terephthalate resin or a polyvinyl chloride resin is used. These resins (polyethylene terephthalate resin or polyvinyl chloride resin) have a haze value of 10 to 30%. However, the polyethylene terephthalate resin has a problem in chemical resistance such as whitening / deterioration with respect to an alkaline content liquid (chemical liquid or the like) and damage due to cracks.

[0004] Polyvinyl chloride resin is also widely used, but if the incinerator has a low capacity, highly toxic dioxin or hydrochloric acid gas is generated at the time of incineration of waste products, which causes environmental pollution. There are sexual problems.

On the other hand, polyethylene resins are also widely used as resin materials for spray bottles. However, many polyethylene resins have high physical strength due to their high crystallinity, but lack transparency. There is.

By the way, as the physical strength, a drop strength from a height of 0.8 to 1.2 m is practically required. For example, acidic cleaners containing a predetermined amount of hydrogen chloride or sulfuric acid, and alkaline cleaners containing sodium hydroxide, etc., are subject to the "Law Concerning the Regulation of Household Products Containing Hazardous Substances" The Enforcement Regulations for Supplies Regulations stipulate that the quality and construction of a container or encapsulation must meet the prescribed tests. In the drop test according to the same rule, "After normal use of a household cleaning agent filled with the nominal volume of the content liquid, tighten the bottle.
No damage or leakage should be observed when dropping once from a height of 1 cm onto a concrete surface with the side and bottom as impact points. Standards have been established.

In such a situation, Japanese Patent Application Laid-Open No. H10-51
No. 1629 describes a reloadable dispenser (spray device). In such a dispenser, an insert (cartridge) containing a concentrated detergent or the like in a plurality of chemical product reservoirs (small chambers) is stored in a spray bottle, and the name of the detergent or the like written on the outer surface of the cartridge is changed. The notes must be visible from the outside of the spray bottle while inserted inside the spray bottle. Further, it is necessary to have such transparency that it is possible to easily determine which compartment of the cartridge is in use and which compartment is unused. Furthermore, when the dispenser mounts the spray head, the tip of the down tube is inserted into the small chamber of the cartridge, so that the inner solution falls into the spray bottle and mixes with a solvent such as water, thereby concentrating. Detergents and the like are diluted to an appropriate concentration, but it is necessary to easily confirm the appearance from the outside of the spray bottle, and it has been an issue to satisfy these demands.

The present invention has been made in view of such circumstances, and has as its object to provide a spray bottle excellent in chemical resistance, environmental safety, transparency, and physical strength.

[0009]

In order to solve the above-mentioned problems, a spray bottle of the present invention is a spray bottle formed by molding a polypropylene resin. It has a physical strength such that no damage is seen in the drop test from the above height, and the haze value in the plastic optical property test method (JIS-K-7105) is 30 to 85%.

That is, the present inventors have conducted a series of studies to satisfy the demand for the spray bottle. As a result, polypropylene resin is the best material,
No damage was observed when dropped at a temperature of 5 ° C.
It has been found that when the haze value in (SK-7105) is set to 30 to 85%, the intended purpose can be achieved, and the present invention has been achieved.

Next, the present invention will be described in detail.

[0012] The spray bottle of the present invention, when kept at 5 ° C, is 0.8 m or more (for example, 0.8 to 1.5).
m, usually 0.8 to 1.2 m), and has a physical strength such that no damage is observed in a drop test from a height of 0.8 to 1.2 m, and a haze value in a plastic optical property test method (JIS-K-7105). 30-85%. Such a spray bottle of the present invention is provided with a spray device (for example, Japanese Patent Application Laid-Open No.
This is used as a part of a reloadable dispenser described in Japanese Patent Application Laid-Open No. 629, and is suitably used for accommodating a chemical solution.

[0013] The spray bottle of the present invention satisfies the drop test described above while kept at 5 ° C. Therefore, it can be filled with a content liquid (various chemical liquids such as a cleaning agent) to withstand the drop strength from a height of 0.8 to 1.2 m, which is practically required, and is practically sufficient even at a low temperature. It has physical strength. In particular, in the reloadable dispenser described in Japanese Patent Publication No. 10-511629, in a spray bottle having a plurality of openings as illustrated in FIG. Strength is required. In addition, in the state kept at 5 ℃
If it has physical strength that does not show damage in a drop test from a height of 1.2 m or more, the drop test of the above "Enforcement Regulations on the Regulation of Household Products Containing Hazardous Substances" above It will be suitable.

The transparency required for the spray bottle of the present invention is determined by the method for testing plastic optical properties (J.
Haze value in IS-K-7105) is 30 to 85%
, And preferably 35-80%. Specifically, for example, when used for a reloadable dispenser described in Japanese Patent Application Publication No. Hei 10-511629, letters written on the outer surface of a cartridge inserted into a spray bottle are described. Is required to have at least a degree of transparency that can be read visually, and the haze value range at this time is 30 to 8
It is preferably 5%, from the viewpoints of readability, distinguishability, sharpness, etc. of display contents such as characters written on the outer surface.
It is preferable to set it to be 5 to 80%.

Further, a polypropylene resin is used as a resin material for the spray bottle of the present invention. Here, the polypropylene resin refers to a propylene homopolymer (homopolymer), a copolymer (copolymer) with other olefin components (ethylene, butylene, etc.), or a blend (polypropylene and polyethylene, polybutylene, etc.) Blend polymer), and various grades according to the molecular weight, molecular weight distribution, or degree of branching are used.

As the homopolymer of polypropylene,
MFR (melt flow rate) value of 0.4 to 5.0 g
/ 10 min, preferably 0.8 to 3.0 g / 10 mi
n, a high density polypropylene resin (HDPP), a low density polypropylene resin (LDPP), a linear low density polypropylene resin (LL).
DPP) or a combination thereof. Preferably, a low density polypropylene resin (LDPP) or a linear low density polypropylene resin (LLDPP) is used.

As the polypropylene copolymer or blended polymer, a polypropylene resin containing 2.0 to 20.0% by mass of a polyethylene resin is preferably used. When the content of the polyethylene resin is less than 2.0% by mass, sufficient transparency and physical strength are poor. When the content is more than 20.0% by mass, the transparency and physical strength are insufficient. Effect becomes saturated,
It is not economically preferable. Especially, it is preferable to mix | blend 5.0-16.0 mass% from a point of physical strength, transparency, economy, and chemical resistance.

As the polyethylene resin used here, a polyethylene resin having an MFR value of 2.0 to 50.0 g / 10 min, preferably 2.0 to 30.0 g / 10 min is used. HD
PE), a low-density polyethylene resin (LDPE), a linear low-density polyethylene resin (LLDPE), or a combination of two or more.

Particularly, in the spray bottle of the present invention, a polyethylene resin produced using a metallocene polymerization catalyst is preferably used.

The above-mentioned metallocene polymerization catalyst is a combination of zirconocene dichloride and methylaluminoxane (also referred to as Kaminski catalyst), which has a high polymerization activity with respect to ethylene and has a uniform active point. With. The polyethylene resin produced using this metallocene-based polymerization catalyst has a narrow molecular weight distribution, a uniform degree of branching, a uniform thickness of lamellar crystals, and an improved mechanical strength.

At this time, as the polypropylene resin,
It is preferable to use a polypropylene resin and contain the polyethylene resin in an amount of 2.0 to 20.0% by mass, and the MFR value of the resin is preferably set to 0.5 to 10 g / 10 min from the viewpoint of a molding method. Is preferable in terms of effects such as strength. It is preferred that the values be substantially the same when a normal polyethylene resin is used.

The method for molding the spray bottle of the present invention includes:
A general container molding method is used, and among them, a blow molding method and an injection molding method are suitably used.

The spray bottle of the present invention can be used as a spray bottle for various detergents using water or the like as a solvent and can be widely used for home or business use, and is particularly suitable for a reloadable dispenser. Can be used. As an example of the reloadable dispenser, there is a dispenser described in Japanese Patent Publication No. 10-511629.

The inner solution to be filled in the small chamber of the cartridge to be loaded into the reloadable dispenser is a concentrated solution such as various detergents. Examples thereof include a detergent for glass, a detergent for oil stains, and a sterilizer. It is filled with concentrated chemicals for various uses, such as oil stain detergents, sanitizing toilet room detergents, deodorants, and sanitizing deodorants. At this time, the spray bottle is filled with a predetermined amount of water for dilution in advance, and the bottom of the small chamber is broken with a down tube. A liquid may be prepared.

In addition to the above, the spray bottle of the present invention contains a large amount of neutral detergents, alkaline detergents for oil stains, acidic detergents for toilets and bathrooms, and organic solvents. Even in the chemical solution containing, diluted appropriately according to the purpose of use in the spray bottle, or filled with diluted detergent diluted solution or diluted drug into the spray bottle,
A spray head or the like is attached for use.

The inner volume (volume) of the spray bottle of the present invention is preferably in the range of 100 to 1,200 ml, more preferably 300 to 800 ml. The drop strength depends on the capacity and shape of the spray bottle. Generally, the larger the capacity, the lower the drop strength. Therefore, the drop strength is appropriately set in consideration of the purpose of use, workability, and the like.

The spray bottle of the present invention is excellent in chemical resistance, environmental safety, transparency, and physical strength, stores a chemical such as a cleaning agent, and cleans the chemical and its diluent for cleaning. Especially as a spray bottle used by spraying on the surface, etc.
It can be suitably used as a spray bottle for a reloadable spray bottle dispenser.

[0028]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a spray device 1 using a spray bottle 2 of the present invention. The spray device 1 includes a spray bottle 2 for accommodating a chemical solution (not shown) such as a cleaning agent, and a cap 3 with a spray nozzle detachably fixed to an upper end portion of a neck portion 2a of the spray bottle 2. I have.

The spray bottle 2 is obtained by molding a polypropylene-based resin. When the spray bottle 2 is kept at 5 ° C., no physical damage is observed in a drop test from a height of 0.8 m or more. And a haze value in a plastic optical property test method (JIS-K-7105) of 30 to 85%. As shown in FIGS. 2 and 3, the spray bottle 2 has a screw portion 5 formed on the outer peripheral surface of the upper end of the neck portion 2a.
A lower screw portion 6 a formed on the lower inner peripheral surface of the first cap 6 is engaged with the screw portion 5. Further, the spray bottle 2 has a screw portion 8 formed on an outer peripheral surface of a chemical liquid inlet 7 protruding upward from the shoulder portion 2b in an inclined manner,
A screw portion 10 formed on the inner peripheral surface of the second cap 9 is engaged with the screw portion 8.

The cap 3 with a spray nozzle includes a cap portion 11 and a spray nozzle 12 provided on the cap portion 11, and a screw portion (not shown) formed on the inner peripheral surface of the cap portion 11. ) Engages with an upper screw portion 6 b formed on the upper outer peripheral surface of the first cap 6. Further, the spray nozzle 12 includes a nozzle portion 13,
An operation lever section 14 and the like are provided. Further, a cartridge 15 reloadable from the neck 2a of the spray bottle 2 is provided.
(See FIG. 4) is inserted and fixed inside the spray bottle 2. The cartridge 15 includes an inner cylinder 16 and an outer cylinder 17.
The upper and lower openings of the inner and outer cylinders 16 and 17 are made liquid-tight with a sealing sheet (not shown) that can be broken at the tip of a down tube (not shown) of the spray nozzle 12. It is sealed. Further, four partition walls 18 are arranged at equal intervals between the inner and outer cylinders 16 and 17, whereby four partition chambers 19 are formed in the internal space of the cartridge 15. Various chemicals are stored in each partitioning chamber 19. An annular flange portion 17a is protruded from the outer peripheral surface of the upper end opening of the outer cylinder 17, and the flange portion 17a is detachably fixed to the first cap 6.

As described above, in this embodiment, the spray bottle 2 has a physical strength such that no damage is observed in a drop test from a height of 0.8 m or more while being kept at 5 ° C. And the haze value in the plastic optical property test method (JIS-K-7105) is 30 to
It is set to 85%. For this reason, even at a low temperature of 5 ° C., the physical strength is excellent, and the names and precautions (not shown) of the chemical solution written on the outer surface of the cartridge 15 can be visually recognized from the outside of the spray bottle 2. It has sufficient transparency.

Next, examples will be described together with comparative examples. However, the present invention is not limited to these examples.

[0034]

EXAMPLES 1-20 AND COMPARATIVE EXAMPLES 1-8 Spray bottles having the resin compositions and capacities shown in Tables 1 to 6 below were molded, and tested for three items: chemical resistance, transparency, and physical strength. An evaluation was performed. The results are also shown. Of the following Tables 1 to 6, Tables 1 to 3 show examples in which the capacity of the spray bottle is 600 ml, and Tables 4 to 6 show Examples and Comparative Examples in which the capacity of the spray bottle is 400 ml. It is. In addition, the test method of each evaluation item is as showing below.

[Chemical resistance] Test methods Various spray bottles shown in Tables 1 to 6 below were filled with the following reagents and stored at a temperature of 50 ° C. for 3 months. The presence or absence of deterioration and cracks was visually observed and evaluated and judged based on the following evaluation criteria.・ Reagents used Chemicals 1: Toilet cleaner with a pH of 2 based on hydrochloric acid Chemical 2: General-purpose cleaner based on a solvent (containing 20% by mass) Chemical 3: Silicate, alkaline agent, surfactant P consisting of agent
Cleaning agent for oil stains with H = 12 ・ Evaluation criteria ○ ・ ・ ・ No whitening, deterioration or cracking. ×: Whitening, deterioration, and cracks are observed.

[Transparency 1] Test method Whether or not the display content such as characters written on the outer surface of the cartridge inserted into the reloadable dispenser has at least the degree of transparency that can be read visually is determined as follows. Evaluation was determined based on the evaluation criteria.・ Evaluation criteria ◎ ... can be read clearly. ○ ... Can read. ×: Difficult to read.

[Transparency 2] Test method The haze (%) value was determined in accordance with the method for testing the optical properties of plastics according to JIS K-7105. At this time, test specimens were taken from various spray bottles and the thickness was 1.2
Those that were confirmed to be ~ 1.5 mm were used.

[Physical strength] Test method Various spray bottles shown in the following Tables 1 to 6 were filled with a nominal volume of water, and a temperature of 5 ° C. was set with the spray nozzle set on the upper part of the spray bottle. And stored at 25 ° C for 24 hours, then 0.8m, 1.0m from bottom and side
And from 1.2m, about the damage or leakage of the spray bottle when dropped naturally on the concrete floor,
Evaluation was determined based on the following evaluation criteria.・ Evaluation criteria ○ ・ ・ ・ No damage or leakage. ×: Damage or leakage was observed.

[0039]

[Table 1]

[0040]

[Table 2]

[0041]

[Table 3]

[0042]

[Table 4]

[0043]

[Table 5]

[0044]

[Table 6]

As is clear from Tables 1 to 6, Examples 1 to 20 are superior to Comparative Examples 1 to 8 in chemical resistance, transparency and physical strength.

[0046]

As described above, according to the spray bottle of the present invention, there is no problem of environmental pollution, while maintaining transparency which does not hinder practical use, chemical resistance to alkaline chemicals and the like, and low temperature conditions. Also excellent in physical strength such as drop strength underneath. In particular, when used as a reloadable spray bottle dispenser, the inserted cartridge is excellent in visibility and its display contents can be easily checked, thereby preventing misuse. While checking, the work of diluting the concentrate can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a spray device using a spray bottle of the present invention.

FIG. 2 is a front view showing the spray bottle.

FIG. 3 is a sectional view showing the spray bottle.

FIG. 4 is a perspective view showing a cartridge.

[Explanation of symbols]

 2 spray bottles

[Procedure amendment]

[Submission date] December 4, 2000 (200.12.
4)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08L 23:06) B65D 83/00 K (72) Inventor Mitsuo Sado 22nd Yamashitacho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Yamashita-cho SSK Building Johnson Professional Co., Ltd. (72) Inventor Hideaki Kiniwa 22nd Yamashita-cho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Yamashita-cho SSK Building Johnson Professional Co., Ltd. F-term (reference) 3E014 PA01 PB01 PC03 PD11 PF03 3E033 AA01 BA15 BA16 BB01 CA03 DA03 DB01 DD05 DE06 GA02 4F071 AA15 AA20 AF30Y AH05 BC04 4J002 BB032 BB121 BB141 BB151 GG01

Claims (5)

[Claims] 1. A spray bottle formed by molding a polypropylene-based resin, wherein the spray bottle is kept at 5 ° C.
It has a physical strength such that no damage is seen in a drop test from a height of 8 m or more.
Haze value in IS-K-7105) is 30 to 85%
A spray bottle, characterized in that: 2. A polypropylene-based resin comprising a polypropylene-based resin and a polyethylene resin of 2.0 to 20.0% by mass.
The spray bottle according to claim 1, wherein the spray bottle contains: 3. The polyethylene resin produced by using a metallocene-based polymerization catalyst.
Spray bottle as described. 4. The spray bottle according to claim 1, wherein the spray bottle is used as part of a reloadable spray device. 5. The spray bottle according to claim 1, wherein the spray bottle is used for storing a chemical solution.