WO2016170884A1 - 外添領域を表面に有する構造体 - Google Patents
外添領域を表面に有する構造体 Download PDFInfo
- Publication number
- WO2016170884A1 WO2016170884A1 PCT/JP2016/058740 JP2016058740W WO2016170884A1 WO 2016170884 A1 WO2016170884 A1 WO 2016170884A1 JP 2016058740 W JP2016058740 W JP 2016058740W WO 2016170884 A1 WO2016170884 A1 WO 2016170884A1
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- liquid
- molded body
- externally added
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- container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/14—Linings or internal coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
- C08J7/065—Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
- C09D191/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
Definitions
- the present invention relates to a structure having an externally added region on the surface, and more specifically, relates to a structure in which a valley is formed on the surface by an externally convex portion formed by externally adding,
- the present invention relates to a structure suitably used as a container.
- Patent Document 1 proposes a technique for improving the sliding property against the contents by forming an oil film on the surface in this way.
- the effect of improving sliding properties is considerably large, but the rough surface serving as the foundation of the oil film is formed by a resin.
- the resin layer forming the rough surface must contain fine solid particles that function as a roughening agent. That is, a rough surface having a predetermined roughness is formed by the surface roughening agent particles in the base resin layer, so that it is very difficult to control the surface roughness, and there are manufacturing problems.
- the base surface must be made of resin.
- the applicant has previously formed a rough surface portion having a maximum roughness Rz in the range of 0.5 to 5.0 ⁇ m on the surface, and about 0.1 to 3.4 ⁇ m on the rough surface portion.
- a structure in which a thin liquid film is formed Japanese Patent Application No. 2014-91894. Since the surface of such a structure exhibits excellent lubricity against various viscous substances by selecting the type of liquid forming the liquid film, this structure can be used as a container.
- the major advantage of this technology is that the rough surface that forms the base of the liquid film can be formed by externally adding solid particles to the surface of the structure, so that the rough surface depends on the size and amount of the solid particles used. There is an advantage that the roughness of can be easily controlled.
- the lubricity effect expressed by the liquid film decreases with time, and the improvement thereof is necessary.
- the present applicant has provided a packaging material characterized in that a liquid film is formed on the inner surface of the container in contact with the contents, and solid particles having a particle diameter of 300 ⁇ m or less are dispersed in the liquid film.
- a packaging material characterized in that a liquid film is formed on the inner surface of the container in contact with the contents, and solid particles having a particle diameter of 300 ⁇ m or less are dispersed in the liquid film.
- an object of the present invention is to provide a structure having an externally added region excellent in lubricity and durability for viscous water-containing substances on the surface, particularly a structure that can be suitably used as a container. is there.
- Another object of the present invention is to provide a structure having excellent surface properties with excellent lubricity and durability for viscous water-containing substances by using an externally added region in which externally added protrusions formed by externally adding are distributed.
- the present inventors as a result of promoting research on surface characteristics when a convex portion is formed by external addition on the surface of a molded body such as a container, etc., as a result, this external additive convex portion is distributed at a certain height or more,
- this external additive convex portion is distributed at a certain height or more
- an externally added convex part is formed of a mixture of a wax component and an oily liquid, and the gap of the externally added convex part is covered with an oily liquid, it is excellent for viscous water-containing substances.
- the present inventors have found that the sustainability is improved while at the same time exhibiting excellent slipperiness.
- the present invention in a structure including a molded body molded into a predetermined shape and an externally added region formed on the surface of the molded body,
- the externally added region has an externally convex portion formed of a mixture of a wax component and a liquid and formed on the surface of the molded body, and has a mountain and valley surface formed by the distribution of the externally convex portion.
- the molded body means that the surface has not been subjected to external addition treatment, and the structure has been subjected to external addition treatment on the surface of the molded body, and externally added convex portions have been distributed. This means that an external area is formed.
- the height difference h between the crest and trough of the crest surface in the externally added region is at least 10 ⁇ m or more.
- F 0 is the measurement area
- F 1 represents the sum of the projected areas occupied by the peaks having a projected area of 1000 ⁇ m 2 or more in the measurement area F 0 .
- the peak ratio F defined by is 0.5 to 0.9
- the melting point of the wax component is 50 ° C.
- the liquid is an oily liquid
- the oily liquid has a contact angle (23 ° C.) with respect to the surface of the molded body of 45 ° or less and a viscosity (25 ° C.) of 100 mPa ⁇ s or less
- the external additive convex part is covered with the liquid used for forming the external additive convex part together with the surface of the molded body between the external additive convex parts.
- the liquid is present in the externally added region in an amount of 1000 to 5000 parts by mass per 100 parts by mass of the wax component.
- the surface of the molded body serving as a ground for the externally added region is made of synthetic resin or glass, (8)
- the molded body is a container, and the inner surface of the container with which the contents contained in the container come into contact is the external addition region, (9)
- the container is used for containing a fluid content having a viscosity (25 ° C.) of 200 mPa ⁇ s or more, Is preferred.
- the surface structure peculiar to the structure of the present invention is formed by externally adding a mixture of a wax component and a liquid to the surface of the molded body. That is, this surface structure is not formed by internally adding solid particles to the resin layer that forms the surface of the molded body. Therefore, depending on the melting point and amount of use of the wax component, And the like can be easily and reliably controlled.
- the structure of the present invention not only exhibits excellent lubricity to viscous water-containing substances due to its unique surface structure, but also the lubricity to emulsions such as mayonnaise-like foods. It is expensive and its sustainability is also improving. Therefore, the structure of the present invention should be used as a container that contains viscous water-containing substances such as ketchup, sauce, mayonnaise-like foods and other viscous substances having a viscosity (25 ° C.) of 200 mPa ⁇ s or more. Thus, these contents can be quickly discharged, and the adhesion remaining in the container can be remarkably suppressed, and almost all of the contents can be used up.
- the schematic sectional side view for demonstrating the surface form of the structure of this invention The figure which shows the form of the direct blow bottle which is a suitable form of the structure of this invention.
- the part which can be confirmed black in the figure is a mountain part.
- the structure of the present invention is provided with an external addition region in which external protrusions 3 are distributed on the surface (base surface 1 a) of a molded body 1 formed into a shape according to the application.
- an external addition region in which external protrusions 3 are distributed on the surface (base surface 1 a) of a molded body 1 formed into a shape according to the application.
- a peak portion X and a valley portion Y are formed on the surface of the molded body 1.
- the externally added convex portion 3 is formed by a mixture of the wax component and the liquid 5, and is held on the base surface 1a to constitute the peak portion X.
- the externally added convex portion 3 is covered with the liquid 5, and at the same time, the lower ground 1 a ′ of the molded body 1 in the valley portion X where the externally added convex portion 3 is not formed is also covered with the liquid 5. It is covered.
- the externally added convex part 3 is made of wax. Since it is a semi-solid or gel formed with the liquid 5, the frictional force generated with the externally added convex portion 3 when the viscous water-containing substance moves is extremely small. Show. Further, since the frictional force accompanying the movement of the viscous water-containing substance is small, no large load is applied to the external projection 3 itself, and almost no stress is applied to the interface between the base surface 1a and the external projection 3. As a result, the external projection 3 does not move from the base surface 1a and continues to be stably held.
- the externally added convex part 3 is covered with the liquid 5 and the externally added convex part 3 is composed of the wax component and the liquid 5, the viscous water-containing substance flows repeatedly, and the liquid 5 The liquid 5 is replenished from the inside of the external protrusion 3 even when the film thickness of the external protrusion becomes thin. Therefore, in the present invention, the above-described excellent slipperiness is continuously maintained, and a decrease in slipperiness with time is also suppressed.
- the air layer present between the protrusions is not used for the expression of slipperiness, but the contact area between the material flowing on the surface and the surface of the structure is reduced by unevenness, thereby Lubricity is improved by reducing the frictional force against the substance flowing on the surface.
- the external projection 3 in the present invention is formed of a mixture of the wax component and the liquid 5 and has a semi-solid or gel form. The surface of the external projection 3 is covered with the liquid 5. Has been. That is, in the present invention, the frictional force applied to the external projection 3 is reduced, thereby exhibiting excellent lubricity.
- the surface shape of the liquid film in Patent Document 1 has fine convex portions
- the surface shape in the present invention shown in the examples described later is a mountain valley with a height difference h having a gentle undulation, From the difference in surface shape, it is presumed that the lubrication mechanism is different.
- the molded body 1 used for forming the structure of the present invention is not particularly limited as long as it can hold the external projections 3 on its surface (base surface 1a). As long as it has the form according to a use with arbitrary materials, such as glass and metal.
- the externally added convex portion 3 using the wax component and the liquid 5 shows the highest holding effect when the base surface 1a is made of a synthetic resin, but even if the base surface 1a is made of glass or metal,
- the present invention can also be applied to a molded body 1 that exhibits a certain degree of holding effect and has a base surface 1a formed of these materials, which is a great advantage of the present invention.
- the molded body 1 since the surface structure formed on the surface of the molded body 1 exhibits excellent lubricity with respect to the viscous water-containing substance, the molded body 1 flows such a water-containing substance. It is preferable to have a form such as a pipe, a container for containing the pipe, a container lid, and the like, and the externally added convex portion 3 is formed on the surface in contact with such a water-containing substance.
- the surface of the molded body 1 (the base surface 1a) is most preferably made of synthetic resin.
- a synthetic resin hereinafter referred to as a base resin
- any moldable thermoplastic resin or curable resin can be used.
- a thermoplastic resin is preferable from the viewpoint that it is easy to mold and has high affinity with the oily liquid 5 and can hold the externally added convex portion 3 more stably.
- thermoplastic resin As such a thermoplastic resin, the following can be illustrated, for example.
- Olefin resins such as low density polyethylene, high density polyethylene, polypropylene, poly 1-butene, poly 4-methyl-1-pentene or ⁇ -olefins such as ethylene, propylene, 1-butene, 4-methyl-1-pentene Random or block copolymers, cyclic olefin copolymers, etc .; Ethylene / vinyl copolymers, such as ethylene / vinyl acetate copolymer, ethylene / vinyl alcohol copolymer, ethylene / vinyl chloride copolymer, etc .; Styrenic resin such as polystyrene, acrylonitrile / styrene copolymer, ABS, ⁇ -methylstyrene / styrene copolymer, etc .; Vinyl resins such as polyvinyl chloride, polyvinylidene chloride, vinyl chloride /
- olefin resins and polyester resins used as container materials for storing viscous contents are suitable, and olefin resins are optimal. That is, the olefin-based resin has a lower glass transition point (Tg) and higher molecular mobility at room temperature than a polyester resin such as PET. This is optimal in that a part of the wax component forming the permeation penetrates into the inside, and thereby the externally added convex portion 3 is stably held on the base surface 1a. Furthermore, the olefin resin has high flexibility and is also used for a squeeze bottle (squeeze bottle) by direct blow molding described later, and the viewpoint of applying the structure 1 of the present invention to such a container. Therefore, olefin resins are suitable.
- the molded body 1 may have a single layer structure of the thermoplastic resin as described above, may be a laminate of the thermoplastic resin and paper or metal, and a plurality of thermal resins. It may have a multilayer structure in which plastic resins are combined.
- the structure of the present invention is excellent in lubricity and persistence for viscous water-containing materials, it is effectively applied to applications that come into contact with such water-containing materials, and particularly used as a container for containing water-containing materials. It is optimal in that the advantages of the present invention can be maximized.
- the molded body 1 has the form of a container
- the inner surface is formed of an olefin resin or a polyester resin
- an oxygen barrier layer or an oxygen is appropriately interposed as an intermediate layer through an adhesive resin layer. It is possible to adopt a structure in which an absorption layer is laminated and a resin of the same type as a base resin (olefin resin or polyester resin) that forms the inner surface is laminated on the outer surface side.
- the oxygen barrier layer in such a multilayer structure is formed of, for example, an oxygen barrier resin such as ethylene-vinyl alcohol copolymer or polyamide. As long as the oxygen barrier property is not impaired, Other thermoplastic resins may be blended.
- the oxygen absorbing layer is a layer containing an oxidizing polymer and a transition metal catalyst, as described in JP-A No. 2002-240813, etc., and the oxidizing polymer is oxygenated by the action of the transition metal catalyst. As a result, the oxygen is absorbed and the permeation of oxygen is blocked.
- an oxidizable polymer and a transition metal catalyst are described in detail in the above-mentioned JP-A No.
- oxidizable polymer examples include Olefin resins having tertiary carbon atoms (eg, polypropylene, polybutene-1, etc., or copolymers thereof), thermoplastic polyesters or aliphatic polyamides; xylylene group-containing polyamide resins; ethylenically unsaturated group-containing polymers ( For example, a polymer derived from a polyene such as butadiene).
- the inorganic salt, organic acid salt, or complex salt of transition metals, such as iron, cobalt, and nickel are typical.
- Adhesive resins used for bonding the layers are known per se, for example, olefin resins graft-modified with carboxylic acids such as maleic acid, itaconic acid, fumaric acid or their anhydrides, amides, esters, etc .; An ethylene-acrylic acid copolymer; an ion-crosslinked olefin copolymer; an ethylene-vinyl acetate copolymer; and the like are used as the adhesive resin.
- the thickness of each layer described above may be set to an appropriate thickness according to the characteristics required for each layer.
- a ligide layer as an inner layer obtained by blending scraps such as burrs generated when the molded article 1 having the multilayer structure as described above with a virgin resin such as an olefin resin.
- a virgin resin such as an olefin resin.
- the outer surface can be formed of a polyester resin or an olefin resin.
- the shape of the container is not particularly limited, and may have a shape corresponding to the container material, such as a cup or cup shape, a bottle shape, a bag shape (pouch), a syringe shape, an acupoint shape, or a tray shape, and is stretch-molded. It may be formed by a method known per se.
- FIG. 2 shows a direct blow bottle which is the most preferable form of the molded body 1 used for forming the structure of the present invention.
- the bottle (corresponding to the molded body 1) indicated by 10 as a whole includes a neck 11 provided with a thread, a trunk wall 15 connected to the neck 11 via a shoulder 13, and a lower end of the trunk wall 15.
- the bottom wall 17 is closed, and the external projection 3 is formed on the inner surface (base surface 1a) of such a bottle.
- Such a bottle 10 is preferably used for containing a viscous substance, and by squeezing the body wall 15, the viscous substance contained therein is discharged. If the sustainability is improved, such contents can be discharged quickly, and the entire amount can be discharged and the contents can be used up.
- the externally added convex portion 3 is formed by being externally added to the surface (base surface 1 a) of the molded body 1, and is composed of a mixture of the wax component and the liquid 5.
- the wax component used for the formation of the externally-convex convex portion 3 may be formed of various organic materials. However, since the compatibility with the liquid 5 needs to be good, the low molecular weight It is preferable to use a wax of the type.
- the system wax include montan wax.
- plant waxes such as rice wax and carnauba wax are optimal in that they can be used without limitation for foods.
- the liquid 5 forms the externally added convex part 3 on the surface of the molded body 1 together with the above wax component due to its compatibility, and the externally added convex part 3 and the surface of the externally convex part 3 due to its wettability.
- the lower ground 1a ′ is covered with the valley portion Y where no water is formed, and due to its incompatibility, it exhibits slipperiness with respect to water-containing substances and functions as a lubricant.
- the liquid 5 must be a non-volatile liquid having a low vapor pressure under atmospheric pressure, for example, a high boiling point liquid having a boiling point of 200 ° C. or higher. This is because when a volatile liquid is used, it easily evaporates and disappears with time.
- the oily liquid has a contact angle (23 ° C.) with respect to the surface of 1 of 45 ° or less, particularly 15 ° or less, and a viscosity (25 ° C.) of 100 mPa ⁇ s or less. That is, regardless of whether the surface material of the molded body 1 is made of synthetic resin, glass, or metal, an oily liquid film is formed on the surface of the molded body 1 using an oily liquid that satisfies the above physical properties. Can be held effectively.
- oily liquid 5 that satisfies the above-described conditions regarding the contact angle, viscosity, and surface tension
- liquid paraffin synthetic paraffin
- fluorinated liquid fluorinated surfactant
- silicone oil fatty acid triglyceride
- various vegetable oils are there.
- edible oil is suitable.
- Specific examples of such edible oils include soybean oil, rapeseed oil, olive oil, rice oil, corn oil, ben flower oil, sesame oil, palm oil, castor oil, avocado oil, coconut oil, almond oil, walnut oil, and bean oil. And salad oil.
- it exhibits the characteristics of the present invention it is not limited to oily liquids, and may be aqueous liquids.
- the liquid 5 as described above is used in an amount of 500 to 10000 parts by mass, particularly 100 to 100 parts by mass of the wax component, in order to form the peak X including the externally added convex part 3 and the valley Y between them. It is preferably used in an amount of 1000 to 5000 parts by mass. That is, if the amount of the liquid 5 used is too large, the externally added convex portion 3 becomes too soft and exhibits fluidity, so that it is difficult to hold the externally added convex portion 3 on the surface of the molded body 1. It becomes.
- the amount of the liquid 5 used is small, it is not possible to give the externally added convex portion 3 an appropriate softness, which may cause a decrease in lubricity and a decrease in its sustainability.
- the valley portion Y the base surface 1a ′ may not be covered with the liquid 5.
- the liquid 5 and the wax component are mixed so as to satisfy the aforementioned amount.
- a coating solution in which the wax component is dispersed may be prepared, and this coating solution may be applied to the surface of the molded body 1.
- the application means can adopt a known method such as spray spraying, knife coating, roll coating, co-extrusion or the like according to the surface shape of the molded body 1. Spray spraying is suitably employed in that the distribution amount can be easily adjusted.
- the external addition convex part 3 can be formed by adjusting the heating temperature of a coating liquid.
- the externally added convex portion 3 can be held on the base surface 1a by the wax component and the liquid 5 externally added as described above, and thus the externally added convex portion 3 having a certain height is formed. It will be.
- the height of the externally-projecting convex portion 3 formed in this way is the height difference h between the peak portion X (the top portion A) and the valley portion Y (the upper surface of the liquid 5) including the externally-projected convex portion 3.
- it is set to be at least 10 ⁇ m or more, particularly 20 ⁇ m or more.
- the height difference h is excessively high, deformation / disintegration or the like of the external protrusion 3 is likely to occur.
- the height of the external protrusion 3 (height from the base surface 1a) is usually , 100 ⁇ m or less is desirable.
- the thickness of the liquid 5 is quite thin. Therefore, the height of the external protrusion 3 is substantially the same as the height difference h between the peak X and the valley Y.
- the peak portion ratio F defined by the above formula is in the range of 0.5 to 0.9, particularly 0.5 to 0.8 in order to develop a stable and sustained slip characteristic. Further, finer irregularities may be formed on the surface of the externally added convex portion 3.
- the structure of the present invention in which the surface structure described above is formed on the surface of the molded body 1 exhibits excellent lubricity and persistence for viscous water-containing substances, and therefore has a viscosity (25 ° C.) of 100 mPa ⁇ s or more, a container containing a viscous water-containing substance, particularly a direct blow container, such as mayonnaise, ketchup, aqueous glue, honey, various sauces, mustard, dressing, jam, chocolate syrup, emulsion, etc.
- a direct blow container such as mayonnaise, ketchup, aqueous glue, honey, various sauces, mustard, dressing, jam, chocolate syrup, emulsion, etc.
- a direct blow container such as mayonnaise, ketchup, aqueous glue, honey, various sauces, mustard, dressing, jam, chocolate syrup, emulsion, etc.
- a filling bottle for viscous contents
- test piece of 20 mm ⁇ 20 mm is cut out from the body of a multilayer container (bottle) having a surface structure prepared by the method described later, and the surface state of the inner surface side of the test piece is digital microscope (VHX-1000) And three-dimensional images were measured (XY range: 116.1 ⁇ m ⁇ 837 ⁇ m). From the obtained image, the maximum height difference in the measurement plane was obtained and set as a typical height difference h of the mountain valley. Further, using Image-Pro Plus (Ver. 5.0.2.9, manufactured by Media Cybernetics, Inc.), the projected area of the peak portion is obtained from the obtained image, and the peak having a projected area of 1000 ⁇ m 2 or more is obtained. The distribution state of the part was analyzed.
- a multi-layer container (bottle) having a surface structure created by the method described below is filled with 100 g of mayonnaise-like food as the contents, and the bottle mouth is heat sealed with aluminum foil and sealed with a cap. To obtain a filled bottle. The bottle filled with the contents was tilted and the sliding behavior was visually observed. The faster the contents move, the better the slipperiness.
- a multi-layered container (bottle) with a surface structure created by the method described below is filled with 400 g of mayonnaise-like food as the content, and the bottle mouth is heat sealed with aluminum foil. And sealed with a cap to obtain a filled bottle. After storing the obtained filled bottle at each storage period and temperature shown in Table 1, peel off the heat seal material, use the bottle fitted with a cap, push the trunk, and finally put the contents through the bottle mouth After squeezing out, air was put into this bottle to restore its shape. Next, the degree of slipping of the contents of the bottle barrel wall after the bottle is inverted (mouthed downward) and stored for 1 hour (the degree to which no contents adhere to the barrel wall) is measured.
- the content adhesion rate was calculated by the following formula.
- Content adhesion rate (%) (Surface area to which the contents are attached / bottle body wall surface area) ⁇ 100 From the content adhesion rate calculated above, the slipperiness was evaluated according to the following criteria. ⁇ : Content adherence rate is less than 10% ⁇ : Content adherence rate is 10% or more and less than 50% ⁇ : Content adherence rate is 50% or more Is excellent.
- Example 1 A multilayer direct blow bottle having a multilayer structure having the following layer structure and an internal capacity of 400 g was prepared.
- Inner layer Low density polyethylene resin (LDPE)
- Intermediate layer ethylene-vinyl alcohol copolymer (EVOH)
- Outer layer Low density polyethylene resin (LDPE)
- Adhesive layer (between inner and outer layers and intermediate layer): acid-modified polyolefin
- oily liquid medium chain fatty acid added salad oil, viscosity 33 mPa ⁇ s (25 ° C.)
- carnauba wax melting point: 80 ° C.
- a coating solution was prepared by partial dissolution and fine dispersion at 70 ° C. using a homogenizer.
- Example 2 A bottle in which the coating liquid was applied to the inner surface of the bottle was prepared in the same procedure as in Example 1 except that the ratio of the oily liquid and the wax was changed as shown in Table 2. Using the produced bottle, the above-mentioned sliding behavior was observed and the content slipping test after storage over time was performed. The results are summarized in Table 2.
- the structure of the present invention has a structure in which externally-convex convex portions are distributed on the surface of the molded body, thereby forming peaks and valleys. Further, from the results of the observation of the sliding behavior and the contents slipping test after storage over time shown in Table 2, in Examples 1 to 5 in which the externally added convex portions were formed by the mixture of the wax component and the oily liquid, the wax was used. Although the sliding behavior is slightly inferior to Comparative Example 1 that is not, it has been found that the performance after long-term storage at high temperature is excellent, and in the container / packaging field where slipping is required to be maintained for a long time in practice. It turns out that it is extremely useful.
- Molded body 1a Underground surface of mountain portion X 1a ': Underground surface of valley portion 3: Externally-convex convex portion 5: Liquid A: Top portion X: Mountain portion Y: Valley portion
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- Wood Science & Technology (AREA)
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- Containers Having Bodies Formed In One Piece (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
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Abstract
Description
特に、容器の分野では、ケチャップやマヨネーズなどに代表される食品類が含水物であることから、粘稠な含水物についての滑性(滑落性)をより向上することが求められており、特に、マヨネーズの如き乳化物は、大きな滑性を得難いことから、このような粘稠な乳化物についての滑性向上がより強く求められている。
かかる構造体の表面は、液膜を形成する液体の種類を選択することにより、種々の粘稠な物質に対して優れた滑性を示すため、この構造体を容器として利用することができるのであるが、この技術の大きな利点は、液膜の下地となる粗面は、構造体表面に固体粒子を外添することにより形成することができるため、用いる固体粒子の大きさや量により、粗面の粗さを容易にコントロールできるという利点がある。
しかしながら、かかる技術では、液膜により発現する滑性効果が経時と共に低下するという問題が有り、その改善が必要である。
しかるに、上記技術は、滑落性の持続性という点での検討は全くされていない。
本発明の他の目的は、外添により形成された外添凸部が分布している外添領域を利用して、粘稠な含水物質に対する滑性及び持続性に優れた表面特性を有する構造体を提供することにある。
前記外添領域は、ワックス成分と液体との混合物からなり且つ前記成形体表面に形成されている外添凸部を有していると共に、該外添凸部の分布によって形成される山谷表面を有しており、
前記外添領域において、前記外添凸部の間に位置している前記成形体の表面は、前記液体により被覆されていることを特徴とする構造体が提供される。
尚、本明細書において、成形体とは、その表面に外添処理がされていないものを意味し、構造体とは、成形体の表面に外添処理がなされて外添凸部が分布した外添領域が形成されているものを意味する。
(1)前記外添領域における山谷表面の山部と谷部との高低差hが、少なくとも10μm以上であること、
(2)マイクロスコープによる表面観察において、下記式:
F=F1/F0
式中、
F0は測定面積であり、
F1は、前記測定面積F0内において、1000μm2以上の投影面積
を有する山部が占める投影面積の和を示す、
で定義される山部比率Fが0.5~0.9であること、
(3)前記ワックス成分の融点が50℃以上であること、
(4)前記液体が、油性液体であること、
(5)前記油性液体が、前記成形体表面に対する接触角(23℃)が45°以下であり、且つ100mPa・s以下の粘度(25℃)を有していること、
(6)前記外添凸部は、該外添凸部間の前記成形体表面と共に、該外添凸部の形成に使用されている液体によって被覆されていること、
(7)前記外添領域には、前記液体が、前記ワックス成分100質量部当り、1000~5000質量部の量で存在していること、
(7)前記外添領域の下地面となる前記成形体の表面が、合成樹脂製またはガラス製であること、
(8)前記成形体が容器であり、該容器に収容される内容物が接触する容器内面が前記外添領域となっていること、
(9)前記容器が、粘度(25℃)が200mPa・s以上の流動性内容物の収容に使用されること、
が好適である。
従って、本発明の構造体は、特に粘稠な含水物質、例えばケチャップやソース、マヨネーズ様食品などの粘度(25℃)が200mPa・s以上の粘稠な物質が収容される容器として使用することにより、これらの内容物を速やかに排出でき、しかも、容器内の付着残存を著しく抑制し、そのほぼ全量を使い切ることができる。
この外添凸部3は、ワックス成分と液体5との混合物によって形成され、下地面1aに保持されて山部Xを構成している。また、外添凸部3は液体5で覆われた形態となっていると同時に、外添凸部3が形成されていない谷部Xでの成形体1の下地面1a’も、液体5で被覆されている。
このような構造体の外添領域(例えば容器の内面)において、図1では、ワックス成分と液体5との混合物によって形成された外添凸部3による山部Xが3つ形成されており、これら山部X(外添凸部3)の間の谷部Yにおいても、その下地面1a’が液体5で被覆されている。
この外添凸部3は、ワックス成分と液体5との混合物により形成されているため、半固体状ないしゲル状の形態を有しており、下地面1a上に安定に保持されている。
また、粘稠な含水物質の種類によっては、外添凸部3が形成されている山部Xばかりか、外添凸部3が形成されていない谷部Yにも接触しながら移動していくことが考えられるが、この谷部Yの下地面1a’も液体5で被覆されているため、この場合も滑性の低下を有効に回避することができる。
特許文献1では、表面を形成する樹脂層に内添されている固体粒子により表面に凹凸を形成し、この凹凸が表面に反映されるような極薄の油膜を形成しており、このような凹凸表面を有する油膜により滑性を発現させている。一見すると、本発明と同様の機構により、滑性が発現しているように思われるが、特許文献1では、樹脂層に内添されている固体粒子によって凹凸(突部)を形成しているため、その凹凸(突部)の高さは極めて小さい。即ち、特許文献1では、突部間に存在する空気層を滑性発現に利用しているのではなく、凹凸により、表面を流れる物質と構造体表面との接触面積を低減させ、これにより、表面を流れる物質に対する摩擦力を低下させることにより滑性を向上させているものである。
一方、本発明における外添凸3部は、ワックス成分と液体5の混合物で形成させ、半固体状ないしゲル状の形態を有しており、この外添凸部3の表面は液体5で被覆されている。即ち、本発明では、外添凸部3に加わる摩擦力が低減されることで、優れた滑性を示すものである。
特許文献1での液膜の表面形状は微細な凸部を有するのに対し、後述の実施例で示す本発明での表面形状は緩やかなうねりを有する高低差hのある山谷となっており、表面形状の違いからも、滑性の機構が異なることが推察される。
本発明の構造体の形成に使用される成形体1は、その表面(下地面1a)に、外添凸部3を保持することが可能である限り、その材質は特に制限されず、樹脂製、ガラス製、金属製等の任意の材質により用途に応じた形態を有していればよい。
特に、ワックス成分と液体5を用いて外添凸部3は、その下地面1aが合成樹脂製のときに最も高い保持効果を示すが、下地面1aがガラス製や金属製であっても、ある程度の保持効果を示し、これらの材質から形成されている下地面1aを備えた成形体1にも本発明を適用することができ、これは、本発明の大きな利点である。
ただ、一般的には、成形が容易であり且つ油性液体5との親和性が高く、外添凸部3をより安定に保持できるという観点から、熱可塑性樹脂であることが好ましい。
オレフィン系樹脂、例えば、低密度ポリエチレン、高密度ポリエチレン、ポリプロピレン、ポリ1-ブテン、ポリ4-メチル-1-ペンテンあるいはエチレン、プロピレン、1-ブテン、4-メチル-1-ペンテン等のα-オレフィン同士のランダムあるいはブロック共重合体、環状オレフィン共重合体など;
エチレン・ビニル系共重合体、例えば、エチレン・酢酸ビニル共重合体、エチレン・ビニルアルコール共重合体、エチレン・塩化ビニル共重合体等;
スチレン系樹脂、例えば、ポリスチレン、アクリロニトリル・スチレン共重合体、ABS、α-メチルスチレン・スチレン共重合体等;
ビニル系樹脂、例えば、ポリ塩化ビニル、ポリ塩化ビニリデン、塩化ビニル・塩化ビニリデン共重合体、ポリアクリル酸メチル、ポリメタクリル酸メチル等;
ポリアミド樹脂、例えば、ナイロン6、ナイロン6-6、ナイロン6-10、ナイロン11、ナイロン12等;
ポリエステル樹脂、例えば、ポリエチレンテレフタレート(PET)、ポリブチレンテレフタレート、ポリエチレンナフタレート、及びこれらの共重合ポリエステル等;
ポリカーボネート樹脂;
ポリフエニレンオキサイド樹脂;
生分解性樹脂、例えば、ポリ乳酸など;
勿論、成形性が損なわれない限り、これらの熱可塑性樹脂のブレンド物を、下地樹脂として使用することもできる。
即ち、オレフィン系樹脂は、PET等のポリエステル樹脂と比較してガラス転移点(Tg)が低く、室温下での分子の運動性が高いため、油性の液体5の一部および外添凸部3を形成するワックス成分の一部が内部に浸透し、これにより、外添凸部3を下地面1aに安定に保持するという点で最適である。
さらに、オレフィン系樹脂は、可撓性が高く、後述するダイレクトブロー成形による絞り出し容器(スクイズボトル)の用途にも使用されており、本発明の構造体1をこのような容器に適用するという観点からもオレフィン系樹脂は適している。
また、酸素吸収層は、特開2002-240813号等に記載されているように、酸化性重合体及び遷移金属系触媒を含む層であり、遷移金属系触媒の作用により酸化性重合体が酸素による酸化を受け、これにより、酸素を吸収して酸素の透過を遮断する。このような酸化性重合体及び遷移金属系触媒は、上記の特開2002-240813号等に詳細に説明されているので、その詳細は省略するが、酸化性重合体の代表的な例は、第3級炭素原子を有するオレフィン系樹脂(例えばポリプロピレンやポリブテン-1等、或いはこれらの共重合体)、熱可塑性ポリエステル若しくは脂肪族ポリアミド;キシリレン基含有ポリアミド樹脂;エチレン系不飽和基含有重合体(例えばブタジエン等のポリエンから誘導される重合体);などである。また、遷移金属系触媒としては、鉄、コバルト、ニッケル等の遷移金属の無機塩、有機酸塩或いは錯塩が代表的である。
上述した各層の厚みは、各層に要求される特性に応じて、適宜の厚みに設定されればよい。
図2において、全体として10で示されるこのボトル(成形体1に相当)は、螺条を備えた首部11、肩部13を介して首部11に連なる胴部壁15及び胴部壁15の下端を閉じている底壁17を有しており、このようなボトルの内面(下地面1a)に、外添凸部3が形成されることとなる。
かかるボトル10は、粘稠な物質の収容に好適に使用され、胴部壁15をスクイズすることにより、内部に収容された粘稠な物質を排出するというものであり、内容物に対する滑性及びその持続性が向上していれば、このような内容物を速やかに排出することができるし、しかも、その全量を排出し、該内容物を使い切ることも可能となる。
外添凸部3は、既に述べたように、成形体1の表面(下地面1a)に外添されて形成されるものであり、ワックス成分と液体5との混合物によって構成される。
このような外添凸部3に形成に使用されるワックス成分は、各種の有機系材料で形成されていてもよいが、液体5との相容性が良好である必要があるため、低分子量系のワックスであることが好ましい。
例えば、合成ワックスとして、オレフィン系ワックス、パラフィンワックス、マイクロクリスタリンワックスなど、植物系ワックスとして、キャンデリラワックス、カルナウバワックス、ライスワックス、木蝋など、動物系ワックスとして、蜜蝋、ラノリンなど、さらに、鉱物系ワックスとして、モンタンワックスなどを挙げることができる。
特に食品類に対しても制限なく使用できるという点で、ライスワックス、カルナバワックスなどの植物系ワックスが最適である。
液体5は、その相容性により、上記のワックス成分と共に外添凸部3を成形体1の表面に形成し、かつ、その濡れ性により外添凸部3の表面と、外添凸部3が形成されていない谷部Yでの下地面1a’を被覆すると共に、その非相容性により、含水物質に対して滑性を示すものであり、潤滑剤として機能する。
かかる液体5は、大気圧下での蒸気圧が小さい不揮発性の液体、例えば沸点が200℃以上の高沸点液体でなければならない。揮発性液体を用いた場合には、容易に揮散して経時と共に消失してしまうからである。
さらに、粘稠な含水物質に対する滑性を高めるという点で、表面張力(23℃)が10乃至40mN/m、特に16乃至35mN/mの範囲にある油性液体を用いるのが良い。即ち、表面張力が、滑性の対象となる含水物質と大きく異なるものほど、潤滑効果が高いからである。
かかる食用油の具体例としては、大豆油、菜種油、オリーブオイル、米油、コーン油、べに花油、ごま油、パーム油、ひまし油、アボガド油、ココナッツ油、アーモンド油、クルミ油、はしばみ油、サラダ油などを例示することができる。本発明の特性を示すものであれば油性液体に限らず、水性液体であってもよい。
本発明において、上述した外添凸部3を含む山部Xや谷部Yを成形体1の表面に形成するには、前述した量を満足するように、液体5とワックス成分とを混合して、ワックス成分が分散した塗布液を調製し、この塗布液を、成形体1の表面に塗布すればよい。塗布手段は、成形体1の表面形状に応じて、スプレー噴霧、ナイフコーティング、ロールコーティング、共押出など、公知の方法を採用することができるが、噴霧圧等の調整により外添凸部3の分布量を容易に調整できるという点で、スプレー噴霧が好適に採用される。
また、外添凸部3は、塗布液の加熱温度を調整することより形成することができる。加熱してワックス成分を部分溶解・微分散化させた塗布液を塗布する場合、下地面(成形体1の表面)、或いは、外部環境により冷却され、半固体状乃至ゲル状の外添凸部3が形成される。所定の高低差hが形成されるように外添凸部3が形成されればよく、下地面1aを加熱して、その後冷却することで半固体状乃至ゲル状の外添凸部3を形成してもよい。これらは用途或いは塗布液の性状によって適宜選択すればよい。
このようにして形成される外添凸部3の高さは、このような外添凸部3を含む山部X(当頂部A)と谷部Y(液体5の上面)との高低差hが、少なくとも10μm以上、特には20μm以上となるように設定される。ただし、この高低差hが、過度に高いと、外添凸部3の変形・崩壊等を生じ易くなるので、かかる外添凸部3の高さ(下地面1aからの高さ)は、通常、100μm以下であることが望ましい。
尚、液体5の厚みはかなり薄く、このため、外部凸部3の高さは、山部Xと谷部Yとの高低差hとほぼ同じである。
また、上記のような外添凸部3により形成される山部Xは、マイクロスコープによる表面観察において、下記式:
F=F1/F0
式中、
F0は測定面積であり、
F1は、前記測定面積F0内において、1000μm2以上の投影面積
を有する山部が占める投影面積の和を示す、
で定義される山部比率Fが0.5~0.9、特に0.5~0.8の範囲にあることが、安定且つ持続した滑り特性を発現させるために好ましい。また、外添凸部3の表面は、さらに微細な凹凸が形成されていてもよい。
特に、マヨネーズ等の乳化物に対しても優れた滑性を示す本発明の構造体1は、包装分野においての有用性が極めて高い。
尚、以下の実施例等で行った各種の特性、物性等の測定方法及び樹脂成形体(容器)の成形に用いた樹脂等は次の通りである。
後述の方法で作製した表面構造を有する多層容器(ボトル)の胴部から20mm×20mmの試験片を切り出し、試験片の内面側の表面状態をデジタルマイクロスコープ(VHX-1000、(株)キーエンス製)にて観察し、3次元の画像を測定した(XYの範囲:1116.1μmx837μm)。得られた画像から、測定面内での最大高低差を求め、山谷部の典型的高低差hとした。
さらに、Image-Pro Plus(Ver.5.0.2.9、Media Cybernetics, Inc.製)を用いて、得られた画像から山部の投影面積を求め、1000μm2以上の投影面積を有する山部の分布状態を解析した。
後述の方法で作成した表面構造を有する多層容器(ボトル)に内容物であるマヨネーズ様食品を常法で100g充填し、ボトル口部をアルミ箔でヒートシールし、キャップで密封して充填ボトルを得た。内容物が充填されたボトルを傾けて滑り挙動を目視にて観察した。内容物の動きが速いほど、滑り性に優れている。
後述の方法で作成した表面構造を有する多層容器(ボトル)に内容物であるマヨネーズ様食品を常法で400g充填し、ボトル口部をアルミ箔でヒートシールし、キャップで密封して充填ボトルを得た。
得られた充填ボトルを表1に示す各保管期間・温度にて保管した後、ヒートシール材を剥がし、キャップを装着させたボトルを用いて、胴部を押し、ボトル口部を通して内容物を最後まで搾り出した後、このボトル内に空気を入れ形状を復元させた。
次いで、このボトルを倒立(口部を下側)にして1時間保管した後のボトル胴部壁の内容物滑り性の程度(胴部壁に内容物が付着していない程度)を測定し、次の式で内容物付着率を計算した。
内容物付着率(%)
=(内容物が付着している表面積/ボトル胴部壁表面積)×100
上記で計算された内容物付着率から、滑り性を次の基準で評価した。
○:内容物付着率が10%未満
△:内容物付着率が10%以上で50%未満
×:内容物付着率が50%以上
内容物付着率が低いほど、経時保管後の内容物滑り性に優れている。
卵1個(50g)と酢15ccと塩2.5ccを混ぜた後、さらに食用油150ccを混ぜ合わせて、実験用のマヨネーズ様食品を作成した。各実施例、比較例では、必要量の内容物を作成して使用した。
下記の層構成を有する多層構造を有し、且つ内容量400gの多層ダイレクトブローボトルを用意した。
内層:低密度ポリエチレン樹脂(LDPE)
中間層:エチレン-ビニルアルコール共重合体(EVOH)
外層:低密度ポリエチレン樹脂(LDPE)
接着層(内外層と中間層との間):酸変性ポリオレフィン
次に、油性液体100g(中鎖脂肪酸添加サラダ油、粘度33mPa・s(25℃))とカルナバワックス5g(融点:80℃)を、ホモジナイザーを用いて70℃で部分溶解・微分散化させて塗布液を調製した。塗布液の温度を制御しながら、エアースプレーを用いてボトル(容器)の内面に均一となるように所定の量を塗布した。
このようにして用意した構造体を用いて、前述の構造体の表面形状観察と滑り挙動の観察および経時保管後の内容物滑り性試験を行った。構造体の表面形状観察の結果を表1に、滑り挙動の観察および経時保管後の内容物滑り性試験の結果をまとめて表2に示す。なお、表面形状観察により得られた構造体の3次元像を図3に示す。
油性液体とワックスの割合を表2に示すように変更した以外は実施例1と同様の手順でボトル内面に塗布液を塗布したボトルを作製した。作製したボトルを用いて、前述の滑り挙動の観察と経時保管後の内容物滑り性試験を行った。結果をまとめて表2に示す。
塗布液としてワックスを含有しない油性液体を用いた以外は実施例1と同様の手順で内面に油性液体を塗布したボトルを作製し、滑り挙動の観察、経時保管での内容物滑り性試験を行った。結果をまとめて表2に示す。
1a:山部Xの下地面
1a’:谷部の下地面
3:外添凸部
5:液体
A:頂部
X:山部
Y:谷部
Claims (11)
- 所定形状に成形されている成形体と、該成形体の表面に形成されている外添領域とを含む構造体において、
前記外添領域は、ワックス成分と液体との混合物からなり且つ前記成形体表面に形成されている外添凸部を有していると共に、該外添凸部の分布によって形成される山谷表面を有しており、
前記外添領域において、前記外添凸部の間に位置している前記成形体の表面は、前記液体により被覆されていることを特徴とする構造体。 - 前記外添領域における山谷表面の山部と谷部との高低差hが、少なくとも10μm以上である請求項1に記載の構造体。
- マイクロスコープによる表面観察において、下記式:
F=F1/F0
式中、
F0は測定面積であり、
F1は、前記測定面積F0内において、1000μm2以上の投影面積
を有する山部が占める投影面積の和を示す、
で定義される山部比率Fが0.5~0.9である請求項2に記載の構造体。 - 前記ワックス成分の融点が50℃以上である請求項1に記載の構造体。
- 前記液体が、油性液体である請求項1に記載の構造体。
- 前記油性液体が、前記成形体表面に対する接触角(23℃)が45°以下であり、且つ100mPa・s以下の粘度(25℃)を有している請求項5に記載の構造体。
- 前記外添凸部は、該外添凸部間の前記成形体表面と共に、該外添凸部の形成に使用されている液体によって被覆されている請求項1に記載の構造体。
- 前記外添領域には、前記液体が、前記ワックス成分100質量部当り、1000~5000質量部の量で存在している請求項1に記載の構造体。
- 前記外添領域の下地面となる前記成形体の表面が、合成樹脂製またはガラス製である請求項1に記載の構造体。
- 前記成形体が容器であり、該容器に収容される内容物が接触する容器内面が前記外添領域となっている請求項1に記載の構造体。
- 前記容器が、粘度(25℃)が200mPa・s以上の流動性内容物の収容に使用される請求項10に記載の構造体。
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CN107531382A (zh) | 2018-01-02 |
JP6105820B1 (ja) | 2017-03-29 |
CA2982912C (en) | 2020-06-09 |
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EP3287388A1 (en) | 2018-02-28 |
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JPWO2016170884A1 (ja) | 2017-04-27 |
CN107531382B (zh) | 2019-04-30 |
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CA2982912A1 (en) | 2016-10-27 |
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