WO2005092603A1 - 多層樹脂成形物及びその製造方法 - Google Patents
多層樹脂成形物及びその製造方法 Download PDFInfo
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- WO2005092603A1 WO2005092603A1 PCT/JP2005/005670 JP2005005670W WO2005092603A1 WO 2005092603 A1 WO2005092603 A1 WO 2005092603A1 JP 2005005670 W JP2005005670 W JP 2005005670W WO 2005092603 A1 WO2005092603 A1 WO 2005092603A1
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- WIPO (PCT)
- Prior art keywords
- resin
- layer
- resin layer
- molding
- multilayer
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
- B29C43/203—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
- B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
- B29C2043/3631—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices moving in a frame for pressing and stretching; material being subjected to compressing stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2001/00—Articles provided with screw threads
Definitions
- the present invention relates to a multilayer resin molded product obtained by molding a preform or the like for molding a container for a container having a projection such as a flange with a multilayer resin, and a method for producing the same.
- an injection member with an intermediate layer (barrier layer) is used as a method to stably mold by providing a barrier layer even in a complicated shape injection member with a flange portion.
- An integrated part is formed by separately molding the sealing part and the sealing part (see Patent Document 3).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-55238
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-145952
- Patent Document 3 JP 2003-291990
- the conventional compression molding of a cylindrical multilayer resin molded product as described in Patent Document 2 described above involves pressing a core mold into a cylindrical interior of a composite cylindrical parison supplied into a cavity mold. Observing the cross section of the hollow multi-layer resin molded product thus compacted with a microscope reveals that the intermediate resin layer is rarely exposed on the inner wall surface, In some cases, the coating of the intermediate resin layer with the inner wall layer was thin, or the intermediate resin layer had an excessively thin, broken or cut portion. Therefore, in order to solve the problem, the present applicant melts a coated resin lump made of an inner surface coating resin on the upper end of the cylindrical main resin lump, and the coated resin lump is formed of the cylindrical main resin lump.
- a compression molding method of a hollow multi-layer resin molded product in which the inner surface of the main resin layer is coated with a sub-resin by compressing so as to flow along the cylindrical inner layer has been proposed (Japanese Patent Application No. 108188).
- This molding method can prevent the thickness of the intermediate resin layer of the multilayer resin molded product from becoming excessively thin, and also prevent the occurrence of a portion, a cut portion, or an excessively thick portion.
- Injection ports (spurts) such as vouchers and bag-in-boxes, preforms as intermediate molded products for forming PET bottles, etc.
- the intermediate material layer enters into the projecting portion, and turbulence or breakage of the intermediate material layer occurs at the tip or starting point of the projecting portion. May have occurred.
- the intermediate resin layer may be thickened in advance.
- gas barrier resins and the like are generally expensive. Thickening the intermediate resin layer increases the cost and increases the intermediate resin layer. There is a problem that the layer is easily exposed on the inner and outer surfaces.
- the present invention provides a method for forming a multilayered molded article having a complicated shape having a projection such as a flange into a thin or thick intermediate resin layer without increasing the thickness of the intermediate resin layer. It is an object of the present invention to provide a multi-layer resin molded product which can improve the gas noria uniformity and the like of the entire container in which the resin can be easily formed, can be integrally molded, and can be manufactured at low cost, and a method for producing the same.
- the inventor of the present invention has proposed the above-described method in order to investigate the cause of the breakage of the intermediate resin layer and the generation of an extremely thin portion when a multilayer resin molded product having a projecting portion is integrally formed.
- the resin mass with an intermediate resin layer and the coated resin mass are stacked.
- compression molding is performed, as shown in FIG. 3, when the main resin mass 30 flows into the protrusion forming portions 21a and 21b of the mold, the inner intermediate resin layer 32 also enters the protrusions together with the main resin layer 31.
- the present invention has found a method of forming the intermediate resin layer without flowing into the protruding portions, and has reached the present invention.
- the multilayer resin molded article of the present invention that solves the above problems is a cylindrical multilayer resin molded article having a projection on the outer peripheral surface of a cylindrical part obtained by integral molding. And at least an intermediate resin layer and another resin layer covering both surfaces of the intermediate resin layer, wherein the intermediate resin layer is located on the cylindrical portion, and the intermediate portion is provided on the protrusion. It is characterized in that no oily layer enters.
- the intermediate layer is formed of a gas barrier resin layer and / or an oxygen-absorbing resin layer, and is used for a container having a flange on an outer peripheral surface of a cylindrical portion. It is suitable for a preform or the like for molding a spout or a container having a flange.
- the method for producing a multilayer resin molded article of the present invention has at least an intermediate resin layer and another resin layer covering both surfaces of the intermediate resin layer, and is obtained by integral molding.
- What is claimed is: 1. A method for molding a cylindrical multilayer resin molded article having a projection on an outer peripheral surface of a cylindrical part, wherein an upper end of a main resin mass formed of a multilayer resin including the intermediate resin layer is molded. The resin is supplied so as to be located near the starting point of the protrusion forming portion of the mold, and then the coating is performed. The resin mass is supplied.
- This is a method characterized by comprising a molding step.
- the inner surface of the main resin layer is coated with the coating resin by compressing the coated resin mass using a core mold so as to flow along the cylindrical inner layer of the main resin mass,
- the coating resin can be made to flow into the projection molding portion and filled in the projection molding portion, and the projection can be formed of the coating resin.
- a protrusion such as a flange is formed. Inconvenience caused by cutting or thinning of the intermediate resin layer at the tip of the protruding portion or near the starting point of the forming portion, which occurs in the case of a cylindrical multilayer molded article having a complicated shape, can be solved. There is no missing portion of the intermediate resin layer, and a spat or preform having high functionality such as gas barrier property can be obtained, and the gas noria uniformity of the whole container can be improved. Further, since the multilayer molded article can be integrally molded, the process can be simplified and a high-quality multilayer resin molded article having a protruding portion can be manufactured at low cost.
- FIG. 1-A is a schematic cross-sectional view of a multilayer resin molded product according to an embodiment of the present invention.
- FIG. 1-B is a schematic sectional view of a multilayer resin molded product according to an embodiment of the present invention.
- FIG. 2 is a schematic view showing a molding step of a multilayer resin molded article of the present invention. (Example)
- FIG. 3 is a schematic view showing a molding step of a multilayer resin molded product of a comparative example.
- FIG. 1A and FIG. 1B show an embodiment of the multilayer resin molded product of the present invention.
- the multilayer resin molded product is a spout for a voucher.
- the layer structure of the cross section is schematically shown.
- the spurt 1 of the present embodiment shows a case in which flanges 3 and 4 are provided on the outer peripheral portion of the cylindrical portion 2, and the cylindrical portion below the flange 4 is indicated by an imaginary line in a bouch 5.
- the introduction part 8 located in the voucher The lower end is opened in the bouch, and the upper end is a discharge port 7 having a small diameter.
- FIG. 1B shows another embodiment, in which the tip of the spout 7 of the spout 1 shown in FIG.
- the intermediate resin layer 11 is exposed at the tip of the spout 7, but there is no particular problem since it does not come into contact with the contents in the vouch!
- the spatula 1 shown in FIGS. 1A and 1B has a main resin layer 10, an intermediate resin layer 11 made of a gas-no-reactive resin, and a sponge 1 as shown schematically in cross section. It consists of a coating resin layer 12 covering the inner peripheral surface and forming the flanges 3 and 4.
- the intermediate resin layer 11 is located completely inside the main resin layer 10 and has an outer surface Alternatively, it is characterized in that it is not exposed on the inner surface and does not enter the flanges 3 and 4 which are protrusions. That is, unlike the cylindrical portions, the flanges 3 and 4 are formed of a single layer of resin containing only the coating resin.
- the intermediate resin layer 11 does not have any turbulence or cut near the base end of the flange, and has a substantially uniform layer thickness as a whole, and is free of cuts and extremely thin or thick parts. Distributed in the cylindrical part. Therefore, except for the part that is located on the inner surface of the bouch and becomes the introduction part 8, the barrier layer that is the intermediate resin layer is located inside the cylindrical part, so that the gasoline uniformity of the spurt part is reliably ensured. Therefore, high gas confidentiality can be obtained for the entire vouch container.
- the main resin layer 10 and the coating resin layer 12 are represented as separate resins in order to facilitate the layer configuration of the spout 1, but the main resin and the coating resin layer 12 are separately illustrated.
- the resin may be, for example, the same resin of the olefin type or a different resin.
- the intermediate resin is not limited to one layer, and may be two or more layers. Further, although not shown, an end of the spout 7 of the spout 1 is sealed with an aluminum-yume foil, a sealing material having a multi-layered material using gas noria resin, which will be described later.
- the resin constituting the main resin layer 10 and the coating resin layer 12 can be any resin depending on the intended use as long as it is a thermoplastic resin.
- an olefin resin is selected.
- PE polyethylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP polypropylene
- PP
- thermoplastic polyester resins in general, such as other polyesters such as ethylene phthalate-based thermoplastic polyester (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), or polycarbonate and other polyesters. Blends with polyarylate and the like can also be used.
- PET ethylene phthalate-based thermoplastic polyester
- PBT polybutylene terephthalate
- PEN polyethylene naphthalate
- Blends with polyarylate and the like can also be used.
- the intermediate resin layer 11 employs a resin having predetermined performance such as a gas barrier resin layer, an oxygen-absorbing resin layer, or the like, depending on the application.
- a gas-barrier resin for example, when it is used as an oxygen gas monolayer, a preferable example is a content of butyl alcohol unit of 0 to 85 mol%, particularly 55 to 80 mol%, and a Kenyi degree of 96%. As mentioned above, particularly, 99% of ethylene butyl alcohol copolymer can be mentioned.
- Other oxygen-gas-reactive resins include nylon resins, especially nylon 6 , nylon 8 , nylon nylon 12, nylon 6, 6, nylon 6, 10, nylon 10, 6, and nylon 6, 6, 6.
- Examples thereof include aliphatic nylons such as copolymers, partially aromatic nylons such as polymethaxylylene adipamide, and polyglycolic acid resins. Then, these oxygen Gasuno rear one of ⁇ from the viewpoint of storage stability and aroma retention of the contents, the oxygen permeability coefficient of 5. 5 X 10 "12 cc - cm / cm 2 - sec - cmHg (23 ° C, 0% RH) or less! / ,.
- the resin itself of the gas barrier layer which may have an oxygen-absorbing property to the gas barrier layer, has an oxygen-absorbing property.
- a structure having Examples of such a resin include those utilizing the acid oxidation reaction of the resin. Oxidizing organic materials such as polybutadiene, polyisoprene, polypropylene, ethylene'carbon oxide polymer, nylon 6, nylon 12 And polyamides such as meta-xylylenediamine (MX) nylon and organic acid salts containing transition metals such as cobalt, rhodium and copper, and photosensitizers such as benzophene, acetophene and chloroketone as oxidation catalysts. Additions can be used. When these oxygen-absorbing materials are used, further effects can be achieved by irradiating them with high-energy rays such as ultraviolet rays and electron beams.
- high-energy rays such as ultraviolet rays and electron beams.
- the gas nolia one layer resin may contain an oxidizable organic component so as to exhibit oxygen absorption without lowering the gas barrier property due to deterioration of the gas barrier layer.
- an oxidizable organic component so as to exhibit oxygen absorption without lowering the gas barrier property due to deterioration of the gas barrier layer.
- a carboxylic acid group, a carboxylic acid anhydride group, or a hydroxyl group, which is preferably a polyene polymer from which polyenka is derived is introduced as such an organic acid component.
- these functional groups include acrylic acid, methacrylic acid, maleic acid, unsaturated carboxylic acid, maleic anhydride, and unsaturated carboxylic acid anhydride, and cobalt is preferable as the transition metal catalyst.
- an oxygen absorbent may be added to the resin constituting the gas barrier layer.
- an oxygen absorbent include reducing metal powders such as reducing iron powder and reducing zinc.
- reducing metal powders such as reducing iron powder and reducing zinc.
- examples thereof include those containing, as a main component, one or a combination of two or more of reducing tin powder, low-metal oxide, and reducing metal compound. These can be used, if necessary, in combination with hydroxides, carbonates, sulfites, organic acid salts, halides of alkali metals and alkaline earth metals, and also with auxiliary agents such as activated carbon and activated alumina. .
- auxiliary agents such as activated carbon and activated alumina.
- a polymer compound having a polyvalent phenol in the skeleton such as a phenol-aldehyde resin containing a polyvalent phenol.
- a cyclic olefin polymer, or an amorphous or low crystalline copolymer (COC) of an olefin and a cyclic olefin can be used.
- Fillers, colorants, heat stabilizers, weather stabilizers, antioxidants, antioxidants, light stabilizers, ultraviolet absorbers, antistatic agents are used for the above gas barrier resins and oxygen-absorbing resins.
- lubricants and modifiers such as metal stones and waxes.
- an adhesive or an adhesive layer can be interposed between the resin layers as necessary.
- FIG. 2 is a schematic cross-sectional view in the order of molding steps for explaining the outline of a method for molding a hollow multilayer resin molded article according to an embodiment of the present invention.
- the compression molding apparatus 20 shown in FIG. 2 also has a combined force of a female die (die) 22 having a cavity 21 including flange forming portions 21a and 21b and a male die 23, and the plunger 24 has a cavity. It is provided so as to penetrate the center of 21 vertically.
- Core type 23 A cylindrical part 25 having an outer diameter corresponding to the inner diameter of the spurt, which is the target molded article, and a height corresponding to the inner depth of the spurt, and a diameter at the top of which is a flat mold surface 6 at the lower end. It is composed of a rod portion 27 equal to the outer diameter of the spat, and is driven up and down by a cylinder device (not shown).
- a multilayer molded product is produced as follows through a resin mass supply step and a compression molding step.
- the intermediate resin layer 11 is present inside the main resin layer 10 so as to be described in the above-mentioned Japanese Patent Application No. 2003-108188.
- co-extrusion is performed with a multi-layered multi-ring die (not shown) and cut to a predetermined length to form a ring-shaped main resin lump 15, and the cut main resin lump is compression-molded in a molten state.
- the plunger 24 is guided by a plunger 24 that penetrates vertically through the cavity 21 of the device 20, and falls into the cavity 21.
- the length of the main resin mass 15 is such that the main resin mass does not enter the flange forming portions 21a and 21b when the core mold is lowered and compression molding is started as described later.
- the lower end of the main resin mass 15 reaches the bottom of the cavity 21 and the upper end thereof is substantially in the vicinity of the flange forming portions 21a and 21b.
- the length and size of the main resin mass 15 must be specified so that the main resin mass 15 stops at a position below that.
- a single layer of the coated resin is extruded by a ring die, cut into a predetermined length, and an annular coated resin mass 16 having a molten grease strength is supplied onto the main resin mass 15 ( Figure 2 (b)). Since the amount of resin of one spatter molded from the main resin mass 15 and the coated resin mass 16 is the same, the amount of resin of the main resin mass 15 is determined by the position of the flange forming portion in the cavity, and the main resin mass is determined. The amount of resin in the coated resin mass 16 is determined by the amount of resin in the resin mass.
- the male mold 23, which is a male mold descends coaxially with the plunger 24 and descends while pressing on the upper end of the plunger.
- the bottom surface 28 of the cylindrical mold portion 25 of the core mold 23 is covered.
- the compression molding is started by lowering while pressing on the upper part of the fat mass 16, but at the start of the compression molding, the main resin mass 15 is seated on the bottom of the cavity as shown in FIG. This is important in that the coating resin, which hardly allows the main resin to flow as described later, is largely moved relative to the main resin and the inner peripheral surface of the coating resin is surely coated. Element.
- the outer peripheral surface and the inner peripheral The coated resin mass is fluidized and formed by compression along the inside of the ring-shaped molding formed between the surface and the surface.
- the upper end goes down.
- the coated resin mass 16 is drawn into the hollow portion of the main resin mass 15 by being connected to the outer peripheral surface of the cylindrical portion 25 while being connected to the outer periphery thereof, thereby covering the inner peripheral surface of the main resin mass with the resin mass. While proceeding while covering, it enters the flange forming portions 21a and 21b, which are gaps, to form a flange (FIGS. (D)-(e)).
- the main resin mass is located below the flange forming portions 21a and 21b in the compression direction, and does not enter the forming portions.
- the main resin mass 15 is fluidized at the same time, and as the space in the female mold 22 where the main resin mass 15 is located becomes narrower, the main resin mass 15 is gradually melted according to the compressive force. rises in the coating resin. In this process, the resin coated by the cylindrical portion 25 enters the inner peripheral surface side of the part to be molded by the bow I, so that the main resin rises along the outer peripheral surface side. become. Therefore, the coating resin layer is formed on the inner peripheral surface side of the molded product, and the main resin layer is formed on the outer peripheral surface side.
- the flange resin When the main resin rises along the outer peripheral surface, the flange resin is already filled up to the end of the flange molding part, so the main resin does not enter the flange molding part and has an upward force with little resistance Only rise.
- the intermediate resin As the main resin fluidizes and rises, the intermediate resin is also contained therein, and the intermediate resin also fluidizes and rises together without being affected by the flange forming part. It rises uniformly without being disturbed near the part (Figs. (E)-(f)). Therefore, it is possible to prevent the intermediate resin layer from being cut or extremely thinned at the flange starting point, and to obtain a flanged spatter having excellent barrier properties.
- the core mold 23 descends to a predetermined position, and the annular flat mold surface 26 of the rod portion 27 presses the top of the molten resin, thereby forming a spatter having a predetermined shape shown in FIG. Figure (f)). Further, the tip is cut to form a spart shown in FIG. 1B.
- the multilayer resin molded article formed as described above is a gas barrier that can be pressed by force if it can prevent the intermediate layer from being cut without causing disturbance in the flow of the intermediate resin even if there are protrusions.
- the upper and lower ends of the intermediate resin layer such as the conductive resin layer are covered with the covering resin layer and the main resin layer, respectively, and are not exposed to the outside.
- the coating resin layer 5 is formed by flowing the inner resin layer 5 with respect to the main resin layer 10, the inner surface can be uniformly coated.
- Material Main resin polypropylene
- Gas barrier intermediate resin Ethylene butyl alcohol copolymer
- the height of the molten resin mass is a target value (design value) at the time of extrusion molding because the height changes due to its own weight and impact at the time of falling.
- Both the main resin lump and the coated resin lump were co-extruded into a cylindrical shape at a die temperature of 200 ° C and cut to the above dimensions.
- the obtained molten cylindrical main resin mass was dropped into a compression mold while maintaining the alignment property with a plunger, and the coated resin main mass was set on the previous main resin mass. Therefore, in this state, the top of the main resin lump is located almost in the middle of the flange forming portion 21a and the flange forming portion 21b in the mold.
- the This state force was also compression-molded with a core mold to obtain a spat of the above dimensions.
- the 10 sparts thus obtained were cut along the axis, and their longitudinal sections were observed with a microscope. As a result, as shown in FIG.
- a two-stage flanged spatter was formed using the same compression molding apparatus as in the example.
- the size and weight of the main fat mass and the coated fat mass were changed as follows.
- FIG. 2 schematically shows a change of each layer in the molding step in the case of the comparative example. Since the molding apparatus is the same as that of the embodiment, the same reference numerals are given. Industrial applicability
- the multilayer resin molded product of the present invention can be used for a spout such as a voucher or a bag-in-box.
- a spout such as a voucher or a bag-in-box.
- the shape of the multilayer resin molded product is not limited to a round cylindrical shape, and can be applied to a non-circular cylindrical shape.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Laminated Bodies (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
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JP2006511544A JP4784765B2 (ja) | 2004-03-29 | 2005-03-28 | 多層樹脂成形物及びその製造方法 |
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JP2004094174 | 2004-03-29 | ||
JP2004-094174 | 2004-03-29 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1955835A1 (fr) * | 2007-02-07 | 2008-08-13 | Aisapack Holding SA | Méthode de réalisation d'un objet multicouche |
WO2009130567A3 (en) * | 2008-04-22 | 2010-06-17 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Apparatuses and methods for making seal rings for caps, and thus obtained seal rings |
JP2020117241A (ja) * | 2019-01-21 | 2020-08-06 | 凸版印刷株式会社 | スパウトパウチ |
US20220297900A1 (en) * | 2021-03-16 | 2022-09-22 | Winpak Ltd. | Closure system with barrier layer |
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JPH10500078A (ja) * | 1994-07-06 | 1998-01-06 | プラスチパック パッケージング,インコーポレイテッド | 多層容器 |
JP2002103428A (ja) * | 2000-09-29 | 2002-04-09 | Toyo Seikan Kaisha Ltd | 多層プリフォームおよびこれを用いて製造した多層ボトル |
JP2003033964A (ja) * | 2001-07-26 | 2003-02-04 | Toyo Seikan Kaisha Ltd | 多層ボトル |
JP2003291990A (ja) * | 2002-03-29 | 2003-10-15 | Toyo Seikan Kaisha Ltd | 容器用注出部材及び該部材が一体的に装着された容器 |
JP2004314336A (ja) * | 2003-04-11 | 2004-11-11 | Toyo Seikan Kaisha Ltd | 中空状多層樹脂成形物及びその成形方法 |
-
2005
- 2005-03-28 JP JP2006511544A patent/JP4784765B2/ja not_active Expired - Fee Related
- 2005-03-28 WO PCT/JP2005/005670 patent/WO2005092603A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10500078A (ja) * | 1994-07-06 | 1998-01-06 | プラスチパック パッケージング,インコーポレイテッド | 多層容器 |
JP2002103428A (ja) * | 2000-09-29 | 2002-04-09 | Toyo Seikan Kaisha Ltd | 多層プリフォームおよびこれを用いて製造した多層ボトル |
JP2003033964A (ja) * | 2001-07-26 | 2003-02-04 | Toyo Seikan Kaisha Ltd | 多層ボトル |
JP2003291990A (ja) * | 2002-03-29 | 2003-10-15 | Toyo Seikan Kaisha Ltd | 容器用注出部材及び該部材が一体的に装着された容器 |
JP2004314336A (ja) * | 2003-04-11 | 2004-11-11 | Toyo Seikan Kaisha Ltd | 中空状多層樹脂成形物及びその成形方法 |
Cited By (6)
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WO2008096290A3 (fr) * | 2007-02-07 | 2008-11-13 | Aisapack Holding Sa | Méthode de réalisation d'un objet multicouche |
WO2009130567A3 (en) * | 2008-04-22 | 2010-06-17 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Apparatuses and methods for making seal rings for caps, and thus obtained seal rings |
US8425825B2 (en) | 2008-04-22 | 2013-04-23 | Sacmi Coopertiva Meccanici Imola Societa' Cooperativa | Apparatuses and methods for making seal rings for caps, and thus obtained seal rings |
JP2020117241A (ja) * | 2019-01-21 | 2020-08-06 | 凸版印刷株式会社 | スパウトパウチ |
US20220297900A1 (en) * | 2021-03-16 | 2022-09-22 | Winpak Ltd. | Closure system with barrier layer |
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JPWO2005092603A1 (ja) | 2008-02-07 |
JP4784765B2 (ja) | 2011-10-05 |
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