WO2001048319A1 - Produit moule - Google Patents

Produit moule Download PDF

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Publication number
WO2001048319A1
WO2001048319A1 PCT/JP2000/009427 JP0009427W WO0148319A1 WO 2001048319 A1 WO2001048319 A1 WO 2001048319A1 JP 0009427 W JP0009427 W JP 0009427W WO 0148319 A1 WO0148319 A1 WO 0148319A1
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WO
WIPO (PCT)
Prior art keywords
layer
papermaking
pattern
molded article
raw material
Prior art date
Application number
PCT/JP2000/009427
Other languages
English (en)
Japanese (ja)
Inventor
Yoshiaki Kumamoto
Masataka Ishikawa
Hidehiko Nakayama
Shingo Komaba
Shingo Odajima
Tokihito Sono
Original Assignee
Kao Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kao Corporation filed Critical Kao Corporation
Publication of WO2001048319A1 publication Critical patent/WO2001048319A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies

Definitions

  • the present invention relates to a molded product having an appearance of an openwork pattern.
  • Conventional technology is a molded product having an appearance of an openwork pattern.
  • Japanese Patent Application Laid-Open No. Sho 644-4699 discloses that, when a pulp material is formed by a papermaking method, a part of the pulp material is kept in a non-pressurized state, and at the time of papermaking, a part of the pulp material is separately watermarked. A method for producing a pot for plant cultivation to be formed is described. However, according to this method, a non-pressed portion having inferior strength is formed in a part of the container, and the physical characteristics of the container are not satisfied. Furthermore, since the smoothness of the container surface is low, problems such as label sticking occur.
  • Japanese Unexamined Patent Publication No. 2000-600760 discloses a papermaking apparatus in which a thin piece made of a synthetic resin film for attaching a watermark pattern is attached to one of two round nets arranged in front and rear. A method for producing paper having a watermark pattern using the method is described. According to this method, the thickness of the portion corresponding to the thin section becomes thin, and a watermark pattern appears.
  • this method basis weight will be limited to how to produce 1 0 to 2 0 g very thin paper such Zm 2, also has the bonding the paper and paper separately in each round network Complicated equipment is required. Disclosure of the invention
  • an object of the present invention is to provide a molded article having excellent appearance and cosmetics.
  • the present invention has a multilayer structure composed of two or more layers mainly composed of fibers, and exhibits an appearance of a watermark-like pattern by visually recognizing a layer located inside the outermost layer when viewed from the outermost layer side.
  • the object has been achieved by providing a molded article (hereinafter, also referred to as a first molded article).
  • the present invention also includes a pulp fiber and an aggregate of fibers, wherein the end of the aggregate is fluffy and the aggregate is not exposed on the surface or formed by the aggregate.
  • the object of the present invention is to provide a molded article (hereinafter, also referred to as a second molded article) having an unclear outline of a pattern to be formed and exhibiting an appearance of an openwork pattern. Further, the present invention provides a method for producing a first molded article, comprising: supplying a first raw material liquid to a papermaking mold, depositing fibers on a papermaking surface of the papermaking mold to form the outermost layer, A papermaking step of supplying a second raw material liquid having a different composition from the first raw material liquid to the papermaking mold to form an inner layer on the outermost layer; and
  • the present invention provides, as another preferred method for producing the first molded body, a method of supplying a first raw material liquid containing a synthetic resin to a papermaking mold and depositing fibers on the papermaking surface of the papermaking mold to form the outermost layer. Then, a papermaking step of supplying an inner layer on the outermost layer by supplying a second raw material liquid having a different composition from the first raw material liquid to the papermaking mold is performed.
  • the present invention provides a method for producing a molded article in which the molded article obtained in the papermaking step is heated by a predetermined means to make the synthetic resin transparent or translucent.
  • FIG. 1 is an enlarged view of a main part of a cross section in one embodiment of a molded article of the present invention.
  • FIGS. 2 (a) to 2 (e) show a preferred method for producing the molded article of the present invention.
  • FIG. 3 is a process chart sequentially showing papermaking and dewatering steps.
  • FIG. 3 is an enlarged schematic view showing a main part of a first layer in another embodiment of the molded article of the present invention.
  • FIG. 4 is an enlarged schematic view showing a main part of a first layer in still another embodiment of the molded article of the present invention.
  • FIG. 5 is an enlarged view (corresponding to FIG. 1) of a main part of a cross section of still another embodiment of the molded article of the present invention.
  • FIG. 1 is an enlarged view of a main part of a cross section in one embodiment of the first molded body of the present invention.
  • the molded body 10 of the present embodiment is a molded body having a two-layer structure including a first layer 1 as an outermost layer and a second layer 2 as an innermost layer.
  • the first layer 1 has a first surface 1 a that forms the outer surface of the molded body 10, and a second surface lb located on the inner surface side of the molded body 10.
  • the first layer 1 partially exists over the entire molded body 10 so as to form a predetermined pattern.
  • the second layer 2 is formed on the second surface 1 b of the first layer 1, and exists continuously over the entire molded body 10. Therefore, the second layer 2 is exposed on the outer surface of the molded body 10 in a portion where the first layer 1 does not exist.
  • the molded body 10 has a layer located on the inner side thereof, that is, the second layer 2 is visually recognized, and exhibits an appearance of a see-through pattern.
  • the watermark pattern includes both a pattern that is formed by actually seeing through, and a pattern that does not show through but is similar to the watermark pattern.
  • the watermark pattern in the molded body 10 of the present embodiment includes those having a fixed pattern and those having an irregular pattern.
  • Certain patterns include predetermined figures, symbols, characters, and the like.
  • paper No. 65, 112 which is a paper obtained by forming a water-impervious pattern 114, 125, 126, 164 to 166, 323, 324 are listed.
  • the watermark pattern of the irregular pattern may be similar to the watermark pattern of Japanese paper.
  • watermarks in Japanese paper such as those described in the Heisei paper score (written by the Japan Federation of Handmade Papers, November 15, 1992, published by Wagamido Co., Ltd.). Have been. For example, No.
  • a colored long fiber having a length-weighted average fiber length (hereinafter, simply referred to as a fiber length) of 1 to 50 mm and a fiber diameter of 5 to 200 m is blended with the outermost layer of the papermaking raw material, and the papermaking raw material is formed.
  • the average fiber length is 0.8 to 2 mm, the fiber length is 0.4 to 1.4], the fiber of 111 is 20 to 90% by weight, and the fiber of 1.4 to 30 mm is 5%.
  • the use of fibers having 1 to 50% by weight of agglomerates of L 0 mm fibers produces more beautiful patterns. Is preferred.
  • Specific examples of the aggregate include an elongated bundle of fibers and a piece of Japanese paper. The details of these patterns will be described later in detail with reference to FIGS. No. 63, 116, 127 to 129, 218, 236, as pigment-dyed, ink-washed, and marbled-patterned paper made of multi-layered paper and composed of layers with different cross-sectional color tones. 289-292.
  • Typical examples of the watermark pattern of the irregular pattern in the molded article 10 of the present embodiment include a cloud dragon pattern pattern, a cloud art pattern pattern, a cloud pattern pattern, a mica pattern pattern, a cloud indigo pattern pattern, and a cloud pattern. Tones, sumi-e, and mottled patterns.
  • the cloud dragon pattern is a pattern of cloud dragon paper, a type of Japanese paper. Unryu paper refers to paper that shows a cloud pattern by spreading long fibers of torn kozo on the ground paper of mulberry or mitsumata.
  • the cloud art pattern, the cloud pattern, the mica pattern, the indigo pattern, and the flower pattern are the patterns of Japanese paper, such as cloud art paper, cloud paper, mica paper, indigo paper, and flower paper, respectively.
  • the watermark pattern in the molded article 10 is expressed by a difference in light transmittance from the outermost layer side in the thickness direction of the molded article 10 because the watermark pattern becomes more beautiful.
  • the molded body 10 has a light transmittance of a portion composed of the first layer 1 and the second layer 2 and a portion composed of only the second layer 2. This is the case when there is a difference.
  • the thickness of the portion composed of the first layer 1 and the second layer 2 is 0.1 to 5 mm, particularly 0.2 to 3 mm, and is composed of only the second layer 2.
  • the portion is thinner than this, and it is preferably from 0.05 to 4 mm, particularly from 0.1 to 2.5 mm, because the watermark pattern becomes even more beautiful.
  • the peripheral region S of the first layer 1 (see FIG. 1) is in a state where the fibers constituting the second layer 2 are inserted, or the fibers constituting the first layer 1 and the second layer are constituted.
  • the first layer 1 is in a mixed state with the smooth fiber, the outline of the first layer 1 is blurred, and a fuzzy watermark pattern is obtained.
  • peeling between the two layers in the portion composed of the first layer 1 and the second layer 2 is prevented. Effectively prevented.
  • the first layer 1 and the second layer 2 of the molded body 10 are mainly composed of fibers. Have been. Each layer is formed by papermaking from raw material liquids having different composition.
  • the fiber any of natural fiber, synthetic fiber and inorganic fiber is used.
  • a pulp fiber is typical.
  • the pulp fiber softwood bleached chemical pulp (NBKP) and hardwood bleached chemical pulp (LBKP), wood pulp such as bast fiber, and non-wood pulp such as bamboo and straw can be used.
  • the pulp fiber preferably has a length of about 0.1 to 10 mm, and a thickness of about 0.1 to 0.1 mm.
  • the synthetic fiber is preferably formed of a resin that is transparent and melts at a temperature at which the pulp fiber is not burnt by heating in the drying step, and examples thereof include those made of a thermoplastic resin.
  • polyolefin resins such as polyethylene (PE) and polypropylene (PP)
  • polyesters such as polyethylene terephthalate (PET), nylon (Ny), and water-soluble polyvinyl alcohol (PVA).
  • PVA polyvinyl alcohol
  • a single type, a side-by-side type having two compositions (for example, PPZPE and PETZ low melting point PET, etc.) and a core-sheath type are used.
  • the fiber length of the synthetic fiber is:! About 50 mm, and the fiber diameter is preferably about 0 :! to 33 dtex, from the viewpoint of facilitating papermaking and formation of a watermark pattern.
  • synthetic fibers when synthetic fibers are used, by heating the molded body to a predetermined temperature in the process of manufacturing the molded body, the synthetic fibers, particularly the heat-meltable synthetic fibers, are melted or softened to become transparent or translucent. As a result of the change in the light transmittance of the part, a beautiful watermark-like pattern appears.
  • synthetic resin particles can be used instead of or together with the synthetic fibers.
  • synthetic fibers it is preferable to use synthetic fibers from the viewpoints of dispersibility in the raw material liquid, papermaking properties, and ease of forming aggregates described later.
  • synthetic resin particles when forming a dot-like pattern, it is advantageous to use synthetic resin particles.
  • synthetic resin constituting the particles those described above and waxes can be used.
  • agar gel particles or water-absorbing polymer particles can also be used.
  • Preferred fibers are wood pulp fibers such as NBKP and LBBK and bast fibers, and synthetic fibers such as PE, PP / PE, PET / low melting point PET.
  • the pulp fiber and the synthetic fiber may be used as a mixture of both.
  • the compounding amount of the synthetic fiber is 5 to 50% by weight, especially 7 to 30% by weight based on the total weight of the pulp fiber and the synthetic fiber. It is preferable because it is uniformly dispersed and a beautiful pattern appears.
  • each of the raw material liquids for forming the first layer 1 and the second layer 2 uses water as a medium, and the composition thereof is preferably as follows.
  • the raw material liquid for forming the first layer 1 should have a length-weighted average fiber length of 0.5 to 1 mm ( Short fibers) are preferably blended.
  • the concentration of the raw material liquid for forming the first layer 1 is preferably from 0.01 to 1% by weight, particularly preferably from 0.1 to 0.5% by weight.
  • the concentration of the raw material liquid for forming the second layer 2 is preferably 0.5 to 5% by weight, particularly preferably 0.7 to 2.5% by weight. Therefore, it is also preferable that the concentration of the raw material liquid for forming the first layer is lower than the concentration of the raw material liquid for forming the second layer 2, since a beautiful watermark pattern is exhibited.
  • the fiber having a length weighted average fiber length of 2 to 30 mm is mixed with a raw material liquid for forming the first layer 1.
  • the thickness is more preferably 3 to 20 mm from the viewpoint of papermaking properties, and further preferably 4 to 15 mm from the viewpoint of stable papermaking.
  • the fibrous material or powdery material is melted or softened to be in a transparent or translucent state, and the light transmittance of the portion changes.
  • a beautiful marble pattern easily appears.
  • the fiber aggregate 3 is covered with the thin film 4 made of pulp fiber, and the fiber aggregate 3 It will not be exposed on the outer surface of the molded body 10 itself. Therefore, the pattern formed by the fiber aggregates 3 becomes a faint blurred watermark pattern.
  • the end 3a of the fiber aggregate 3 becomes fluffy, as shown in FIG. Therefore, the outline of the pattern formed by the fiber aggregates 3 is blurred, and the pattern becomes a blurred watermark pattern.
  • the fiber aggregates 3 may or may not be covered with a thin film 4 made of pulp fibers. As the fiber aggregate, those described above can be used. In order to form the blurred open tone pattern shown in FIGS.
  • the weight ratio between the pulp fiber and the fiber aggregate is 99 / :! ⁇ 50/50, especially It is preferably from 95 to 600.
  • the concentration of the raw material liquid containing pulp fibers and fiber aggregates is preferably 0.05 to 5% by weight, particularly preferably 0.2 to 3% by weight. In this case, if the concentration of the raw material liquid is adjusted to 0.05 to 1% by weight, a formed article having a more noticeable blurring effect when the fiber aggregate 3 is covered with the thin film 4 is obtained. .
  • the fiber agglomerate 3 has a large flow resistance and is easily deposited on the papermaking layer more quickly than the thin and short pulp fiber, so that the fiber agglomerate 3 tends to collect on the surface of the molded body.
  • the concentration of the raw material liquid is adjusted to 1 to 5% by weight, the papermaking deposition of the fiber aggregate 3 becomes slower than other fibers, and the fiber aggregate 3 is exposed to the outer surface of the molded body. It is possible to obtain a compact with low blurring.
  • the composition of the raw material liquid for forming the outermost first layer is important.
  • the composition of the raw material liquid for forming the second layer should be different from the composition of the raw material liquid for forming the first layer in accordance with the watermark pattern to be developed.
  • the components, concentrations, etc. There are no particular restrictions on the components, concentrations, etc.
  • a preferred method for producing the molded article of the present embodiment will be described with reference to FIGS. 2 (a) to 2 (e).
  • a first raw material liquid is supplied to a papermaking mold, fibers are deposited on the papermaking surface of the papermaking mold to form a first layer, and then mixed with the first raw material liquid in the papermaking mold.
  • a papermaking net is disposed on the entire surface of the papermaking surface, and a mask member is partially disposed on the papermaking net so as to form a predetermined pattern.
  • the manufacturing method will be described in more detail.
  • a cavity 23 formed of a pair of split dies 21 and 22 and having a predetermined shape is formed inside.
  • a predetermined amount of the first raw material liquid I is injected under pressure into the cavity 23 from the upper opening of the papermaking mold 20.
  • Each of the split dies 21 and 22 is provided with a plurality of communication holes 24 communicating with the cavities 23 from the outer surface thereof.
  • a pump is used for pressurized injection of the first raw material liquid I.
  • the pressure at which the first raw material liquid I is injected under pressure is preferably 0.01 to 5 MPa, more preferably 0.01 to 3 MPa.
  • a papermaking net 25 is provided on the papermaking surface of the papermaking mold 20, that is, on the entire inner surface of the cavity 23.
  • the mask member 26 is partially disposed on the papermaking net 25 so as to form a predetermined pattern.
  • the mask member 26 is made of a material having no or low water permeability, and is fixed on the papermaking net 25 by a predetermined means.
  • the mask member 26 is formed of a material such as metal, plastic, rubber, and glass.
  • the fibers in the raw material liquid are deposited on the papermaking surface, and A first layer 1 is formed.
  • the fibers are deposited only on the papermaking net 25 without being deposited on the mask member 26 by controlling the injection amount and the degree of suction of the first raw material liquid I. That is, the first layer 1 is formed only on the papermaking net 25.
  • the first layer 1 is formed only on the papermaking net 25.
  • the molded body in which the second layer 2 is exposed on the outer surface is formed. 10 is obtained.
  • the first raw material liquid I contains the above-mentioned water-soluble PVA fiber aggregates or agar gel particles or water-absorbing polymer particles, these components are dissolved in this papermaking process. As a result, a transparent pattern appears in the first layer 1. It is preferable that the thickness of the mask member 26 be 0.05 to 5 mm from the viewpoint that the watermark pattern is clearly exhibited and the thickness of the molded body does not become excessive. Further, the width of the mask member 26 is preferably 0.1 to 20 mm from the viewpoint of clearly displaying the watermark pattern and the ease of forming the second layer 2.
  • the first layer 1 is placed in the cavity 23. 2. Inject the raw material liquid II of 2 under pressure.
  • the pressure at which the second raw material liquid II is injected under pressure can be substantially the same as the pressure at which the first raw material liquid I is injected under pressure.
  • the second layer 2 is formed on the entire surface of the papermaking surface, that is, on the first layer 1 and the mask member 26 by controlling the injection amount and the degree of suction of the second raw material liquid II. Is done.
  • the peripheral region S (see FIG. 1) of the first layer 1 becomes one of the fibers constituting the second layer 2.
  • the fibers of the first layer 1 and the fibers of the second layer are mixed.
  • the inside of the cavity 23 is continuously sucked.
  • a hollow core 27 having elasticity, expandable and contractible is inserted into the cavity 23.
  • the core 27 inflates like a balloon in the cavity 23 and presses the water-containing first layer 1 and second layer 2 toward the inner surface of the cavity 23 to perform pressure dehydration. used.
  • the core 27 is formed of urethane, fluorine-based rubber, silicone-based rubber, or elastomer having excellent tensile strength, rebound resilience and elasticity.
  • pressurized fluid is supplied into the core 27 to remove the core 27.
  • the first layer 1 and the second layer 2 in a water-containing state are pressed against the inner surface of the cavity 23 by the expanded core 27 to be dehydrated under pressure.
  • the pressurized fluid used to expand the core 27 for example, compressed air (heated air), oil (heated oil), and other various liquids are used.
  • the pressure for supplying the pressurized fluid is preferably from 0.01 to 5 MPa, particularly preferably from 0.1 to 3 MPa.
  • the pressurized fluid in the core 27 is drained as shown in FIG. 2 (e) and reduced to the size before expansion.
  • the contracted core 27 is taken out of the cavity 23, and the mold 20 is opened to take out a wet molded body 10 having a predetermined moisture content.
  • the outer surface of the molded body 10 is not completely smooth.
  • the removed molded body 10 is then subjected to a heating and drying step. In the heating and drying step, almost the same operations as those in the paper making and dewatering step shown in Fig.
  • a heating mold is formed separately in which a cavity having a shape corresponding to the outer shape of the pulp molded article to be formed is formed by combining a set of split molds, and the heating mold is heated to a predetermined temperature. deep.
  • the heating-type cavity shape is the same as the papermaking-type cavity shape.
  • the inner surface is not visible from the outside, and does not cause a deterioration in the appearance of the molded body.
  • the first layer 1, which is the outermost layer contains a synthetic resin
  • the above-described heating is performed at a temperature higher than the softening point or melting point of the synthetic resin, so that the synthetic resin is softened or melted. It becomes a transparent or translucent state, and the light transmittance of the site changes. Also in this case, the obtained molded article has a watermark pattern.
  • the heating temperature is preferably as high as possible, as long as the pulp fibers do not burn, but can be adjusted appropriately according to the type of synthetic resin.
  • PE or PP when PE or PP is used, it is 95 to 180, when wax is used, it is 40 to 110t: and when PET is used, it is 220 to 280. preferable.
  • the molded body is sufficiently dried, the fluid in the core is drained, and the core is reduced and taken out. Further, open the heating mold and take out the target molded object.
  • the first layer 1, which is the outermost layer contains a synthetic resin, the molded article obtained by drying is subjected to a heating / pressing step as a subsequent step, so that the molded article becomes more beautiful. A transparent watermark pattern can be developed.
  • the dried molded body is loaded into a heating mold having a smooth inner surface, and then the molded body is heated to melt the synthetic resin contained in the first layer 1 to make it transparent.
  • a molded article having a watermark pattern of a pattern corresponding to the pattern of the first layer 1 is obtained.
  • the dried compact is loaded into a heating mold having a predetermined pattern of irregularities on the inner surface, and then the molded body is heated and embossed to form a composite material contained in the first layer 1.
  • the obtained molded body after drying It is loaded into a heating mold having a predetermined pattern of irregularities on its inner surface, and then the molded body is heated. As a result, the synthetic resin at the portion of the molded body that is in contact with the convex portion of the mold is melted, and the portion is made transparent. On the other hand, the part of the molded body that is not in contact with the convex part of the mold remains opaque. As a result, on the surface of the molded body, a transparent portion formed by melting the synthetic resin and an opaque portion are formed corresponding to the concave and convex pattern of the mold, and the molded body is formed by these portions. Presents a watermark pattern. Next, the second compact of the present invention will be described.
  • the second molded body differs from the first molded body in that it has a single-layer structure.
  • the second molded body contains pulp fibers and aggregates of the fibers.
  • the pulp fiber and the aggregate of the fiber those similar to the first molded body can be used.
  • the ends of the aggregates are fluffy, and the outline of the pattern formed by the aggregates of the fibers is soft, giving a blurred open tone pattern. This makes it difficult for the agglomerates of the fibers exhibiting a pattern to drop off from the molded body due to rubbing, scratching, peeling off with a tape, and the like.
  • the fiber aggregate is covered with a thin film of pulp fiber, and the fiber aggregate itself is exposed on the outer surface of the molded body.
  • the pattern formed by the agglomerates is a fuzzy watermark-like pattern.
  • ADVANTAGE OF THE INVENTION According to the molded object (1st molded object and 2nd molded object) of this invention, a desired pattern can be formed on the three-dimensional surface which consists of a curved surface etc. by which screen printing is impossible or difficult. it can. Further, the molded article of the present invention can form a pattern and form the outer surface of the molded article smoothly, so that it is possible to apply a label in a post-process and transfer ink in a printing process.
  • the present invention is not limited to the above embodiment.
  • the molded body 10 has a two-layer structure, but may have a multilayer structure of three or more layers depending on the use of the molded body, required performance, and the like. If the molded body has a multilayer structure of three or more layers, the layer located on the inner layer side from the outermost layer, that is, the second layer and / or the inner layer May be exposed on the outer surface of the molded body to have an appearance of an openwork pattern.
  • the second layer 2 is formed of the first layer.
  • the first layer 1 is formed of a relatively thick region 1A and a relatively thin region 1B.
  • the second layer 2 may not be entirely exposed by the first layer 1 because it is formed.
  • the region 1 A where the thickness is relatively large corresponds to the region where the mask member 26 is not arranged on the inner surface 23 of the cavity of the papermaking mold 20, and the region 1 B where the thickness is relatively small is the mask member It corresponds to the area where 26 is arranged.
  • the thickness of the region 1 B having a relatively small thickness in the first layer 1 is 1 Z 2 0 to 1 Z 2, particularly 1 20 to 1 Z of the thickness of the region 1 A having a relatively large thickness.
  • the thickness of each region is 0.1 to 3 mm, particularly 0.2 to 2 mm, for the region 1A having a relatively large thickness, and 0.2 for the region 1B having a relatively small thickness. 0.1 to 1 mm, particularly preferably 0.05 to 0.2 mm for the same reason.
  • Such a molded article can be obtained by forming the first layer 1 in the above-described manufacturing method such that the thickness of the first layer 1 at the time of papermaking is equal to or greater than the thickness of the mask member 26. Further, by forming the second layer while the first layer 1 is in a water-containing state, the peripheral region S (see FIG. 1) of the first layer 1 becomes one of the fibers constituting the second layer 2. In this state, the fibers of the first layer 1 and the fibers of the second layer are mixed.
  • the second raw material liquid II was injected after the completion of the injection of the first raw material liquid I, but instead of this, the first raw material liquid I was
  • the first raw material liquid I was
  • a mixed layer in which the composition continuously changes from the composition of the first layer 1 to the composition of the second layer 2 is formed between both layers, A molded article having a watermark pattern different from that of the molded article of the above embodiment can be obtained.
  • the formation of the mixed layer effectively prevents the first layer 1 and the second layer 2 from being separated from each other against rubbing, scratching, and peeling with a tape.
  • a set of papermaking molds is constituted by two split molds. However, depending on the shape of the molded body, three or more split molds are used to form a papermaking mold. May be configured. The same applies to the heating type. Further, as the papermaking mold, a male mold or a female mold of a pair of press molds composed of a male mold and a female mold may be used.
  • the shape of the papermaking mold there is no particular limitation on the shape of the papermaking mold as long as the heating mold cavity shape corresponds to the outer shape of the molded body to be molded.
  • the above embodiment is an example of a bottle-shaped molded body, a box-shaped ton-shaped molded body and molded bodies of other shapes may be used instead.
  • various shapes such as objects such as figurines can be freely designed. Examples In the following examples, "%” means “% by weight” unless otherwise specified. (Example 1)
  • a papermaking mold was prepared in which cavities having a shape corresponding to the outer shape of the molded body to be formed were formed by abutting two sets of split molds. On the inner surface of the cavity in this papermaking mold, a papermaking net is arranged over the entire surface. A mask member (0.2 mm thick) having a metal pattern formed on the papermaking net is formed on the papermaking net. , A maximum width of 5 mm and a minimum width of 0.5 mm) were partially arranged. The first raw material liquid was pressure-injected into the cavity from the upper opening of the papermaking mold at a pressure of 0.3 MPa. The inside of the cavity was suctioned to form a first layer of the first raw material liquid only on the papermaking net.
  • the second raw material liquid was pressurized and injected into the cavity at a pressure of 0.3 MPa to form a second layer on the first layer and the mask member.
  • a core made of an elastic body is inserted into the core, air is pressed into the core at a pressure of 1.5 MPa, and the first layer and the second layer are pressed against the inner surface of the cavity and pressurized. Dehydration was performed.
  • the first raw material liquid was a mixture of 0.5% pulp slurry of imitation deinked waste paper having a whiteness of 70% and a 1% blue colorant based on the pulp weight.
  • the papermaking mold was opened to take out the water-containing molded body, which was loaded into a heating mold.
  • the heating mold has a cavity having the same shape as the papermaking mold.
  • a core made of an elastic material is inserted into the molded body loaded in the heating mold, and air is pressed into the core at a pressure of 1.5 MPa, and the molded body is heated while pressed against the inner surface of the cavity.
  • the mold was heated to 200 to dry the compact.
  • the heating mold was opened, and the bottle-shaped molded body was taken out.
  • the resulting molded article had the appearance of an openwork pattern with a floral pattern that was embossed white while being colored blue.
  • the first raw material liquid a pulp slurry having a concentration of 0.25% was used in which 10% of mitsumata fiber and 0.2% of a blue colorant were added to the pulp weight.
  • the second raw material liquid was the same as in Example 1.
  • a molded article having a two-layer structure was obtained in the same manner as in Example 1.
  • the obtained molded article had a flower-like openwork appearance that appeared white while being colored light blue.
  • the fiber aggregates contained in the first raw material liquid are covered with a thin film of pulp fiber as shown in Fig. 3, and the fiber aggregates themselves are exposed on the outer surface of the molded body.
  • the outline of the floral pattern was blurred.
  • the peeling resistance of the aggregate of the fiber on the outer surface was evaluated by the following method. As a result, the aggregate of the fibers did not peel off from the molded body at all.
  • Scotch mending tape (trade name, made of 3M, adhesive strength (medium), width 18 mm) was adhered to the outer surface of the molded body, and a roller of 400 g was passed thereover for one pass. afterwards, The tape was peeled off by hand, and the degree of peeling of the fiber aggregate was visually observed. (Example 3)
  • the first raw material liquid Japanese paper made of pink mitsumata was cut into 0.5% simulated pulp slurry with imitation used deinked paper having a whiteness of 70% by a hammer mill and knives or hand towels. A blend of the fiber aggregate at 10% based on the pulp weight was used.
  • the second raw material liquid was the same as in Example 1.
  • a molded article having a two-layer structure was obtained in the same manner as in Example 1 except that these raw material liquids were used without using a mask member.
  • the obtained molded article had a water-white appearance composed of fiber aggregates, which were colored pink and emerged pink. Further, the ends of the fiber aggregates contained in the first raw material liquid were fluffed as shown in FIG. However, unlike Fig.
  • the fiber aggregate was covered with a thin film of pulp fiber, and the fiber aggregate itself was not exposed on the outer surface of the molded product, and the outline of the openwork pattern was blurred.
  • the peel resistance of the obtained molded body was evaluated. As a result, the aggregate of the fibers did not peel off at all from the molded body.
  • the first raw material liquid wasted paper made of pink mitsumata was cut into a 0.1% concentration pulp slurry of imitation deinked waste paper with a whiteness of 70% by a hammer mill and / or hand towel.
  • the obtained washi fiber agglomerates containing 10% of the pulp weight were used.
  • the second raw material liquid was the same as in Example 1. Using these raw material liquids, a molded product having a two-layer structure was obtained in the same manner as in Example 3.
  • the obtained molded article had a water-white appearance composed of fiber aggregates which were colored pink and emerged pink.
  • the end of the fiber aggregate contained in the first raw material liquid was fluffed as shown in FIG. 4, and the outline of the watermark pattern was blurred.
  • the fiber aggregate was exposed on the outer surface of the molded product.
  • the peel resistance of the obtained molded body was evaluated. As a result, more than half of the fiber aggregates were separated from the molded body.
  • a pulp slurry having a density of 0.5% of imitation deinked waste paper having a whiteness of 70% was used as a first raw material liquid.
  • the second raw material liquid was the same as in Example 1.
  • a molded article having a two-layer structure was obtained in the same manner as in Example 1.
  • a washi fiber aggregate obtained by cutting a paper made of pink mitsumata with a cutter was attached to the outer surface of the wet molded article, and then heated and dried.
  • the fiber aggregate was exposed on the outer surface.
  • the peel resistance of the obtained molded body was evaluated. As a result, the fiber aggregates were completely separated from the molded body.
  • the molded object excellent in the cosmetics of an external appearance is provided.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un produit (1) moulé comportant une structure multicouche (1, 2) d'au moins deux couches, constituées principalement de fibres et formant un motif ajouré, qu'on peut reconnaître grâce à une couche (2) placée à l'intérieur de la couche (1) la plus extérieure et vue depuis cette couche (1) la plus extérieure.
PCT/JP2000/009427 1999-12-28 2000-12-28 Produit moule WO2001048319A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/373745 1999-12-28
JP37374599 1999-12-28

Publications (1)

Publication Number Publication Date
WO2001048319A1 true WO2001048319A1 (fr) 2001-07-05

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Application Number Title Priority Date Filing Date
PCT/JP2000/009427 WO2001048319A1 (fr) 1999-12-28 2000-12-28 Produit moule

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WO (1) WO2001048319A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4637766B1 (fr) * 1968-12-17 1971-11-06
US4132591A (en) * 1975-07-07 1979-01-02 Sun Oil Company Of Pennsylvania Molding processes for making multilayer containers of different materials
JPS5771500A (en) * 1980-10-21 1982-05-04 Daiken Trade & Industry Production of fibrous molded product
JPS63227889A (ja) * 1987-03-11 1988-09-22 三菱マテリアル株式会社 凹凸模様を有する無機質繊維補強板の抄造方法
JPH01168998A (ja) * 1987-12-21 1989-07-04 Kiyoo Shimomura 紙製品の模様付け方法
JPH0225600U (fr) * 1988-07-30 1990-02-20
JPH08109600A (ja) * 1994-10-11 1996-04-30 Daio Paper Corp 透かし加工シート
JPH101900A (ja) * 1996-06-14 1998-01-06 Daifuku Seishi Kk 高吸油化粧用脂取り紙及びその製造方法
JPH1018199A (ja) * 1996-07-01 1998-01-20 Oji Paper Co Ltd パルプモールド
JPH11279998A (ja) * 1998-03-30 1999-10-12 Noritake Co Ltd パルプモウルド成形型

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4637766B1 (fr) * 1968-12-17 1971-11-06
US4132591A (en) * 1975-07-07 1979-01-02 Sun Oil Company Of Pennsylvania Molding processes for making multilayer containers of different materials
JPS5771500A (en) * 1980-10-21 1982-05-04 Daiken Trade & Industry Production of fibrous molded product
JPS63227889A (ja) * 1987-03-11 1988-09-22 三菱マテリアル株式会社 凹凸模様を有する無機質繊維補強板の抄造方法
JPH01168998A (ja) * 1987-12-21 1989-07-04 Kiyoo Shimomura 紙製品の模様付け方法
JPH0225600U (fr) * 1988-07-30 1990-02-20
JPH08109600A (ja) * 1994-10-11 1996-04-30 Daio Paper Corp 透かし加工シート
JPH101900A (ja) * 1996-06-14 1998-01-06 Daifuku Seishi Kk 高吸油化粧用脂取り紙及びその製造方法
JPH1018199A (ja) * 1996-07-01 1998-01-20 Oji Paper Co Ltd パルプモールド
JPH11279998A (ja) * 1998-03-30 1999-10-12 Noritake Co Ltd パルプモウルド成形型

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