JP5435826B2 - Manufacturing method of solid detergent with marking - Google Patents

Description

  The present invention relates to a method for producing a marking-containing solid detergent obtained by applying a clear marking to the inside using laser light.

  In order to mark a line drawing such as a character or a pattern on the surface of the solid cleaning agent, drawing such a line drawing is usually performed by providing irregularities on the surface, but by using the solid cleaning agent, There is a problem that the marking on the surface easily disappears. On the other hand, as a method of drawing and marking characters or patterns inside the solid detergent, there is a method of arranging a substance different from the component inside the solid detergent so as to represent such a line drawing. There is a problem that causes alteration of ingredients.

  By the way, recently, a technique for irradiating a workpiece such as a glass plate with a laser to mark the surface or inside thereof has been proposed (see Non-Patent Document 1). Even if this technique is applied to the internal marking of the solid cleaning agent, there is a problem that the marking such as the line drawing does not become clear. In recent years, in order to solve this problem, there has been a proposal to perform internal marking by covering the surface of a transparent or translucent solid detergent with a smooth film such as polyethylene or cellophane, and irradiating laser light through the film. (See Patent Document 1). This proposal aims to improve the surface roughness of the surface of the solid cleaning agent by covering with a smooth film because the laser light entry angle changes depending on the surface roughness of the surface of the solid cleaning agent to be processed. is there. However, although the proposed technique can certainly draw a line drawing inside the solid detergent, it is still insufficient in terms of the sharpness of the line drawing.

Shuichi Yokogai, “Laser / Glass Internal Engraving System”, [online], January 30, 2005, Musashinokikai Laser Division, [December 20, 2011 search], Internet <URL: http: // www .musashino-kikailaser.jp / images / laser01.pdf>

JP 2006-273975 A

  In view of the above circumstances, the object of the present invention is to improve the surface roughness of a solid detergent, and to provide a marking-containing solid detergent manufacturing method in which a clear line drawing is marked inside the solid detergent using a laser beam. It is to provide.

According to the present invention, the object is to form a transparent liquid layer mainly composed of an oil agent or a polyhydric alcohol that is liquid at room temperature, or a mixture thereof in close contact with the surface of a transparent or translucent solid detergent . above, the solid detergent through the liquid layer, and the incident laser light to condensed by condensing point set in advance therein, to be subjected to markings by generating cracks in said population point This is achieved by the manufacturing method of the marked solid cleaning agent with marking.

  According to the present invention, by forming a transparent liquid layer in close contact with the surface of the solid cleaning agent, the unevenness of the laser light incident surface is eliminated, and the laser light irradiated to the solid cleaning agent is dispersed through the liquid layer. Without incident and collected at the internal focusing point. As a result, clearer markings such as line drawings can be given inside the solid cleaning agent. Moreover, the solid cleaning agent which gave the internal marking in this way does not lose | disappear marking immediately by using the said solid cleaning agent.

It is explanatory drawing of the manufacturing method of the solid cleaning agent of this invention.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is an explanatory diagram of a method for producing a marking-containing solid detergent of the present invention. In this figure, reference numeral 1 is a solid detergent such as solid soap, 2 is the surface of the solid detergent, 5 is a liquid layer, 10 is a laser emitting portion, 12 is a condenser lens, 14 is a laser beam, and P is a solid wash. The condensing points inside the agent 1 are shown.

  The cleaning component of the solid cleaning agent 1 that can be used in the present invention includes an anionic surfactant, a cationic surfactant, an amino acid surfactant, a nonionic surfactant, an amphoteric surfactant, and the like. Regardless of the type of agent. In addition to glycerin, polyhydric alcohols such as 1,3-butylene glycol and propylene glycol, saccharides such as sucrose and sorbitol, other moisturizers, oily and water-soluble polymers, bactericides, anti-inflammatory agents, and oxidation Those containing an inhibitor, an ultraviolet absorber, a colorant, a flavoring agent and the like can also be used.

  In the present invention, a liquid layer 5 is provided on the surface 2 of such a transparent or translucent solid detergent 1. The liquid constituting the liquid layer 5 is not particularly limited as long as it is transparent at room temperature, that is, has a light transmittance and does not become turbid. Here, the term “transparent” is used herein to include both colored and colorless and transparent.

  Specific examples of such a liquid include water, various alcohols, various solutions, various organic solvents, various oils, and the like. Among these, water and some alcohols dissolve the surface 2 of the solid cleaning agent within a relatively short time to form a dissolving layer of the cleaning agent on the surface 2. It is important to note that marking needs to be performed as soon as possible.

  Examples of the liquid that can be suitably used in the present invention include various oils and polyhydric alcohols. These are because it is difficult to dissolve the surface of the cleaning agent, so that the formation of a dissolved layer on the surface 2 of the solid cleaning agent can be suppressed or prevented, and as a result, the internal marking can be performed more clearly.

  Examples of the various oil agents include at least one selected from the group of oils, aliphatic higher hydrocarbons, and ester oil agents.

  Examples of oils include castor oil, olive oil, avocado oil, linseed oil, sesame oil, rice bran oil, soybean oil, canola oil, safflower oil, coconut oil, corn oil, rapeseed oil, sunflower oil, jojoba oil, almond oil, macadamia nut oil, Various fats such as peanut oil, cottonseed oil, grape seed oil, rosehip oil, hazelnut oil and horse oil can be used. Other oils such as essential oil, jojoba oil, mineral oil, squalane and silicone oil can also be used. Among these, from the viewpoint of easy availability, oil agents used in general households such as castor oil, olive oil, canola oil, safflower oil and rapeseed oil can be preferably used. These can be used alone or in combination of two or more.

  Aliphatic higher hydrocarbons include dodecane, 1-dodecene, 4-methyl-cis-2-pentene, 1-nonene, pentadecane, tetradecane, 2,6,10,14-tetramethylpentadecane, undecane, 1,3 , 5,7-undecatetraene, 1,3,5-undecatriene, 2-undecene, cyclohexane, decane, heptadecane, hexadecane, octane, nonane, tridecane and the like. These can be used alone or in combination of two or more.

  Ester oils include isopropyl myristate, isopropyl palmitate, triethylhexanoin, diisopropyl sebacate, diethyl sebacate, diisopropyl adipate, cetyl ethylhexanoate, isostearyl palmitate, trimethylolpropane triethylhexanoate, pentaethylhexanoate Examples include erythrityl and isodecyl neopentanoate. These can be used alone or in combination of two or more.

  Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, polyethylene glycol, 1,3-butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, glycerin, diglycerin, and polyglycerin. These can be used alone or in combination of two or more.

  In addition to the various oils and polyhydric alcohols exemplified above, solids, waxes, solutions obtained by dissolving lipids, etc. in the same or different suitable solvents are also used as the above liquids. Is possible. Depending on the type of solid detergent, for example, liquid fatty acids (including solutions) may be used.

  The method for forming the liquid layer 5 is not particularly limited. For example, the liquid may be applied to the surface of the solid cleaning agent 1 using a brush or the like, and after the liquid is dropped on the surface of the solid cleaning agent 1, a spoon or the like is used. It may be thin and even. Further, a weir may be provided on the surface of the solid cleaning agent 1 so as to surround an area relatively larger than the size of the marking, and the inside thereof may be filled with a liquid. You may make it add the solid cleaning agent 1 and add a liquid until this is completely immersed. The thickness of the liquid layer 5 can be appropriately set within a common sense range from the extent that the region to be subjected to the internal marking on the surface of the solid cleaning agent 1 is completely covered to about 20 mm, for example.

Laser processing equipment used for internal marking of solid cleaning agents includes a laser oscillation unit that oscillates laser light, a control unit, an optical system that includes a laser light condensing lens, and a processing table on which a work (workpiece) is placed. A known apparatus composed of the above can be used. For this processing apparatus, any of a table moving method in which a workpiece (processing table) moves, an optical scanning method in which a laser beam is scanned, and a combination of these methods can be suitably used. Usable laser light includes YAG laser, YVO ₄ laser, femtosecond laser and the like.

For example, when a table moving type laser processing apparatus (not shown) is used, the following well-known operations are performed. First, line images such as characters, figures, and patterns to be marked in the solid cleaning agent 1 and position information of the focal point are input to the control unit. The position information of the condensing point can be defined by the depth from the surface 2 of the solid cleaning agent to be marked or the height from the processing table surface on which the solid cleaning agent is placed according to the program installed in the control unit. . Irradiation conditions such as the laser intensity vary depending on the transparency and shape of the apparatus and the solid cleaning agent 1. For example, when a YVO ₄ laser (wavelength: 532 nm) is used, the average output is usually set to about 1.2 W. .

  When the solid cleaning agent 1 (or the container containing the solid cleaning agent 1) to be marked is placed at a predetermined position on the processing table and the laser irradiation start switch is turned on, the solid cleaning agent 1 is applied according to the program of the control unit. The mounted processing table automatically moves three-dimensionally, and at the same time, the laser beam is applied to the solid cleaning agent 1 through the liquid layer so as to be condensed at a preset condensing point inside the solid cleaning agent 1. Incident. When the laser beam is focused at the focal point, the thermal energy destroys the tissue at that point, and the line drawing such as letters and figures can be visually recognized from the outside over time. Will be formed. The line drawing includes a three-dimensional three-dimensional object.

  As described above, according to the manufacturing method of the solid detergent with marking of the present invention, the liquid layer is formed in close contact with the surface of the solid detergent, and the unevenness of the laser light incident surface is eliminated, thereby allowing the liquid layer to pass through. Since the laser beam applied to the solid cleaning agent is incident on the solid cleaning agent without being dispersed and condensed at a preset internal condensing point, it is possible to provide clearer markings such as line drawings inside the solid cleaning agent. it can. Moreover, the solid cleaning agent which gave the internal marking in this way does not lose | disappear marking immediately by using the said solid cleaning agent. Furthermore, unlike conventional marking on solid detergents, there is no need for molds for processing letters / drawings on the surface or raw materials to be mixed in solid detergents, and it is fully compatible with high-mix / small lot processing. It is possible. Furthermore, the production method of the present invention can be drawn on a solid detergent such as many transparent or translucent solid soaps in which line drawings can be visually observed from the outside.

DESCRIPTION OF SYMBOLS 1 Solid cleaning agent 2 Solid cleaning agent surface 5 Liquid layer 10 Laser emission part (laser apparatus)
12 Condensing lens 14 Laser light P Condensing point

Claims (3)

After forming a transparent liquid layer mainly composed of liquid oil or polyhydric alcohol at room temperature in close contact with the surface of the transparent or translucent solid detergent , the liquid detergent is passed through the liquid layer to the inside of the solid detergent. incident laser light so as to condense light at the focal point set in advance, the manufacturing method of marking containing solid detergent, characterized in that applying markings by generating cracks in said population point. The oil agent is at least one selected from the group of oils, aliphatic higher hydrocarbons, and ester oil agents, and the aliphatic higher hydrocarbons include dodecane, 1-dodecene, 4-methyl-cis-2- Pentene, 1-nonene, pentadecane, tetradecane, 2,6,10,14-tetramethylpentadecane, undecane, 1,3,5,7-undecatetraene, 1,3,5-undecatriene, 2-undecene The method for producing a solid detergent with marking according to claim 1 , which is at least one selected from the group consisting of cyclohexane, decane, heptadecane, hexadecane, octane, nonane, and tridecane . The method for producing a solid detergent with marking according to claim 1 or 2 , wherein the laser beam is a YAG laser , a YVO ₄ laser, or a femtosecond laser.