KR102368317B1 - Composition for container having elasticity and container manufacturing method using the same - Google Patents

Abstract

The present invention relates to a composition for an elastic container and a manufacturing method of an elastic container using the same, and more specifically, to a composition for an elastic container which can be elastically deformed, is transparent and has excellent rigidity, and a manufacturing method of an elastic container using the same. The present invention comprises 100 parts by weight of a first resin comprising at least one of polypropylene and polyethylene and 10 to 110 parts by weight of a second resin comprising a propylene-based elastomer (PBE).

Description

A composition for an elastic container and a method for manufacturing an elastic container using the same

The present invention relates to a composition for an elastic container and a method for manufacturing an elastic container using the same, and more particularly, to provide a composition for an elastic container capable of elastic deformation, transparent and excellent in rigidity, and a method for manufacturing an elastic container using the same .

A container refers to an object containing an object. In general, in order to refrigerate or freeze food, etc., the container is accommodated and stored.

Prior art Patent Publication No. 10-2021-0050596 (hereinafter referred to as prior art) relates to a peel-resistant glass container, and in more detail, the glass container has an inner surface, an outer surface, and an inner surface extending from the outer surface to the inner surface. a vitreous body having a wall thickness, wherein at least an inner surface of the vitreous body is peel-resistant.

In the prior art, the heat-resistant coating is thermally stable at a temperature of 260° C. or higher for 30 minutes.

However, when the contents such as food are accommodated in a container as in the prior art and then put into a freezing device to be frozen, the contents adhere to the container at the same time as the contents are frozen, so it is easy to separate the contents from the container without thawing for a long time. There was a problem that it wasn't.

The present invention has been devised to solve the above problems, and a composition for an elastic container capable of manufacturing an elastic container having elasticity so that the container can be easily separated from the contents accommodated in the container, and a method for manufacturing an elastic container using the same is intended to provide

Another object of the present invention is to provide a composition for an elastic container which is transparent and has excellent rigidity, and a method for manufacturing an elastic container using the same.

The present invention for the purpose of solving the above problems has the following configuration and features.

100 parts by weight of a first resin including at least one of polypropylene and polyethylene; and 10 to 110 parts by weight of the second resin including a propylene-based elastomer (PBE).

In the method for manufacturing an elastic container using a composition for an elastic container, 100 parts by weight of a first resin including at least one of polypropylene and polyethylene and a propylene-based elastomer (PBE) using a mixer. Preparing a composition for a container having elasticity by mixing 10 to 110 parts by weight of the resin (S10); and injecting the composition for an elastic container into an injection machine and injection molding to manufacture an elastic container (S20).

In addition, the mixer, a pair of chambers; a horizontal shaft member disposed between the pair of chambers; a first clamp that surrounds any one of the pair of chambers and has bolt holes through which the bolts pass through both ends; a first coupling part provided in the first clamp and connected to one end of the horizontal shaft member; a second clamp that surrounds the other of the pair of chambers and has bolt holes at both ends to which the bolts are fastened; a second coupling part provided in the second clamp and connected to the other end of the horizontal shaft member; It may include a; rotation means for rotating the horizontal axis member about the horizontal direction as a central axis.

The present invention having the above configuration and characteristics is an elastic container that includes a first resin including polypropylene and a second resin including a propylene-based elastomer, so as to have elasticity so that it can be easily separated from the contents accommodated in the container. has the effect of being able to manufacture

In addition, the present invention has the effect of making it possible to manufacture an elastic container which is transparent and has excellent rigidity by including the first resin including polypropylene and the second resin including the propylene-based elastomer.

1 is a schematic flowchart for explaining a method for manufacturing an elastic container according to an embodiment of the present invention.
2 is a view for explaining the mixer.
3 is a view of FIG. 1 viewed from another angle.
4 is a view for explaining the injection machine.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

Throughout this specification, when a part is "connected" to another part, it includes not only the case of being "directly connected", but also the case of being "indirectly connected" with another element interposed therebetween. do.

The composition for an elastic container according to an embodiment of the present invention is manufactured into an elastic container in which food is accommodated, for example, by correcting a process such as injection molding. Hereinafter, for convenience of description, it will be referred to as 'the present composition'.

In addition, hereinafter, the present composition and the elastic container manufactured by the present method to be described later will be referred to as 'the present container'.

The composition (composition for an elastic container according to an embodiment of the present invention) is a first resin including at least one of polypropylene and polyethylene and a second resin including a propylene-based elastomer (PBE). include

Polypropylene (PP) is a rigid molding (injection molding) material, which imparts excellent rigidity to the container. Therefore, the present container made of the composition containing polypropylene is given sufficient rigidity not to be cut through scissors or the like.

The polypropylene, as the lightest material among plastics, promotes weight reduction of the container, and has excellent transparency to add transparency to the container.

In addition, polypropylene has a low thermal conductivity so that the container has excellent thermal insulation and cold storage properties, and has excellent scratch resistance, which can effectively suppress the occurrence of scratches on the surface of the container.

Polyethylene (PE) is one of the thermoplastic plastics, which is light, flexible, and feels like wax.

Polyethylene has characteristics such as high impact strength at low temperature, excellent abrasion resistance, excellent chemical resistance, corrosion resistance, and water resistance, and thus gives the above effects to this container.

As constant, it is said that the first resin includes at least one of polypropylene and polyethylene, but preferably includes polypropylene, and in some cases (eg, when excellent waterproofness is required), polyethylene may be additionally included. .

100 parts by weight of the first resin is included in the present composition, and the composition ratio of the second resin described below is based on 100 parts by weight of the first resin.

The second resin includes a propylene based elastomer (PBE).

Propylene-based elastomers are olefinic elastomers composed of isotropic propylene repeating units in which ethylene is randomly distributed.

Exemplarily, the propylene-based elastomer may include 80 to 96% by weight of propylene and 5 to 16% by weight of ethylene. More preferably, it may contain 87 to 92% by weight of propylene and 8 to 13% by weight of ethylene.

For example, the propylene-based elastomer may be 'vistamaxx™ 3980FL' manufactured by 'Exxonmobil'.

The propylene-based elastomer has excellent adhesion to PP and PE contained in the first resin, and has excellent injection moldability. In particular, when included in the present composition, it is employed to increase the rigidity of the present container and impart excellent elasticity.

Therefore, the present composition includes the second resin including the propylene-based elastomer, thereby imparting elasticity to the container, and thus the container is elastically deformed, so that the container can be easily separated from the contents contained in the container. there is.

When the propylene-based elastomer is mixed with the first resin, the stress whitening of the present composition and the present container can be increased, and impact properties can be improved.

The propylene-based elastomer has been approved for use in food contact applications by the FDA and EU, so that the container prepared by the present composition comprising the propylene-based elastomer can also be used as a food container.

In the present composition, the second resin including the propylene-based elastomer is included in an amount of 10 to 110 parts by weight based on 100 parts by weight of the first resin.

When less than 10 parts by weight of the second resin is used in the present composition, there is a problem in that the moldability of the present composition is lowered and, in particular, elasticity is lowered. When the second resin is used in excess of 110 parts by weight in the present composition, the increase in the above-described effect imparted by the second resin is insignificant, but there is a problem of lowering the price competitiveness of the present composition.

It may be more preferable that the second resin contains 90 to 110 parts by weight based on 100 parts by weight of the first resin.

The present composition described above is manufactured into the present container by injection molding by the present method to be described later.

1 is a schematic flowchart for explaining a method for manufacturing an elastic container according to an embodiment of the present invention, FIG. 2 is a view for explaining a mixer, FIG. 3 is a view viewed from another angle of FIG. 1, FIG. 4 is a diagram for explaining the injection molding machine.

Meanwhile, a description will be given of a method for manufacturing an elastic container (referred to as 'the present method') according to an embodiment of the present invention. However, the present method relates to a method for manufacturing an elastic container using the present composition described above, and since it includes the same or corresponding technical characteristics as the present composition, the same reference numerals are used for the same or similar configuration as the above salpin configuration, and overlapping Descriptions to be made will be abbreviated or omitted.

1 to 4 , the method includes a mixing step (S10) and an injection step (S20).

The mixing step (S10) is a second resin comprising 100 parts by weight of the first resin including at least one of polypropylene and polyethylene and a phase propylene-based elastomer (PBE) using the mixer 1 . 10 to 110 parts by weight are mixed to prepare the present composition.

The mixer 1 includes a pair of chambers 11 in which the first resin and the second resin are accommodated.

The chamber 11 is a commonly used one that includes a housing having an inner receiving space, and a cover that is opened on one side of the housing and covers the opening formed therein.

The mixer 1 may include a horizontal shaft member 12 disposed between the pair of chambers 11 . That is, the pair of chambers 11 are disposed with the horizontal shaft member 12 interposed therebetween.

The horizontal shaft member 12 has a length in the horizontal direction and is connected to a rotation means 17 to be described later so as to be able to rotate with the length in the horizontal direction as a central axis.

Here, the horizontal direction means a left-right direction with reference to FIG. 3 , and the same will be applied in the following description.

The mixer 1 surrounds any one of the pair of chambers 11 (which is provided on the left side with reference to FIG. 3, hereinafter referred to as a 'first chamber'), and bolts B are attached to both ends. It may include a first clamp 13 in which a penetrating bolt hole is formed.

For example, to be more specific, the first clamp 13 includes an elastic body 132 surrounding the first chamber and a pair of first flanges 131 extending in the horizontal direction from both ends of the elastic body 132 to face each other. ), wherein the bolt hole is formed in each of the pair of first flanges 131 so that the bolt (B) penetrates the bolt hole formed in each of the pair of first flanges 131 to form a pair of first flanges (131). One flange 131 can be fastened.

In addition, the mixer 1 surrounds the other one of the pair of chambers 11 (which is provided on the right side with reference to FIG. 3 and will be referred to as a 'second chamber' hereinafter), and bolts B are attached to both ends. It may include a second clamp 15 formed with a bolt hole to be fastened.

Although not shown, of course, the second clamp 15 may also include a configuration corresponding to each of the first flange 131 and the elastic body 132 of the first clamp 13 .

The first clamp 13 penetrates a bolt hole formed at both ends, such as a bolt (B), and then tightens the bolt (B) through a nut or the like to adjust the separation distance of both ends of the first clamp 13 1 It is possible to adjust the size of the inner space formed by the clamp 13 and the bolt (B).

The second clamp 15 also passes one bolt (B) through the bolt hole formed at both ends, and then tightens the bolt (B) through a nut or the like to adjust the separation distance of both ends of the second clamp (15). 2 It is possible to adjust the size of the inner space formed by the clamp 15 and the bolt (B).

The chamber 11 is inserted into the inner space formed by the clamps (the first clamp 13, the second clamp 15), and the distance of both ends is adjusted through the bolts (B) penetrating both ends. The chamber 11 can be fixed to the clamp.

Conversely, if the distance between both ends of the clamp is increased by rotating the bolt (B), the chamber 11 may be released from the inner space of the clamp.

As will be described in more detail in the following description, the clamp is connected to the horizontal shaft member (not shown). As described above, the horizontal shaft member and the chamber 11 are detachably coupled to the chamber 11 to facilitate the chamber 11 . Maintenance is possible, and since the size of the inner space of the clamp is adjusted, there is an advantage that the chamber 11 having various sizes can be connected to the horizontal shaft member through the clamp.

The mixer 1 may include a first coupling part 14 provided in the first clamp 13 and connected to one end (left end in reference to FIG. 3 ) of the horizontal shaft member (not shown).

Exemplarily, the first coupling part 14 extends in the horizontal direction from one side of the first clamp 13 , and the first tube body 141 having a hollow inside so that the end of the horizontal shaft member (not shown) is interpolated. and a first fastening member 142 penetrating through the first tube body 141 and pressing the end of the horizontal shaft member inserted into the hollow. Of course, the first fastening member 142 may be provided with a screw thread on the outer periphery, and the first tube body 141 may be provided with a nut member fastened to the first fastening member 142 .

The mixer 1 may include a second coupling part 16 provided in the second clamp 15 and connected to the other end (the right end of FIG. 3 ) of the horizontal shaft member (not shown).

Illustratively, the second coupling part 16 extends in the horizontal direction from one side of the second clamp 15 , and the second pipe body 161 has a hollow inside so that the end of the horizontal shaft member (not shown) is interpolated. and a second fastening member 162 penetrating through the second tube body 161 to press the horizontal shaft member inserted into the hollow. Of course, the second fastening member 162 may be provided with a screw thread on the outer periphery, and the second tube body 161 may be provided with a nut member fastened to the first fastening member 142 .

As such, the mixer 1 performing the mixing step (S10) of the present method includes a coupling part (a first coupling part 14, a second coupling part 16) to detachably couple the clamp and the horizontal shaft member. There is an advantage that the clamp and the horizontal shaft member can be maintained separately.

The mixer 1 may include a rotating means 17 for rotating the horizontal axis member with a horizontal direction as a central axis. The rotation means 17 may include a vertical shaft member 171 geared to the horizontal shaft member, and a driving unit (not shown) for rotating the vertical shaft member 171 in a vertical direction as a central axis.

Illustratively, the vertical shaft member 171 and the horizontal shaft member are connected via a worm gear, miter gear, straight bebel gear, etc., so that the vertical shaft member 171 is connected to a driving unit (not shown) (exemplarily a motor) to center the vertical direction When rotating about the axis, the horizontal axis member may rotate about the horizontal direction as the central axis.

Accordingly, the chamber 11 connected to the horizontal axis member and the coupling part and the clamp rotates about the horizontal direction as a central axis, and as described above, a pair of chambers 11 connected to the horizontal axis member is provided, so that the first resin and The present composition is prepared by mixing the second resin.

The injection step (S20) is a step of preparing the elastic container by injecting the composition for an elastic container into the injection machine 2 and injection molding.

The injection machine 2 may include, for example, an input part (eg, a hopper) into which the composition for an elastic container is injected, and a pressing part (eg, a screw or a cylinder, etc.) for pressing the composition introduced into the input to the die side. However, the injection machine 2 (injection molding machine) is commonly used in the field, a more detailed description will be omitted.

On the other hand, the composition contains 1.5 parts by weight of the anti-condensation agent (G). The condensation inhibitor (G), 0.2 parts by weight of an impact heating agent (G1) containing sodium acetate, tolylene diisocyanate and ethylenediamine (polyurea) formed through interfacial polycondensation of ethylenediamine (polyurea) containing 0.1 parts by weight of endothelial agent (G2), 0.3 parts by weight of shelling agent (G3) containing sulfur-cured ethylene-propylene diene monomer (Ethylene Propylene Diene Rubber), magnetite, polyacrylic acid, and polyoxy 0.2 parts by weight of a cationic agent (G4) containing ethylene (polyoxyethylene), 0.4 parts by weight of a heat conduction spacer (G5) containing carbon fibers with an aspect ratio of 20 or more, 0.3 parts by weight of a pressurizing agent (G6) containing iron (fe) It may include parts (the condensation inhibitor (G) and each component included in the anti-condensation agent (G) are described based on 100 parts by weight of the first resin).

Referring to FIG. 5, when describing the condensation inhibitor (G) in more detail, the shock pyrogen (G1) of the condensation inhibitor (G) is an aqueous solution containing sodium acetate, and the solvent may be, for example, water, and the sodium acetate is It may be dissolved in a supersaturated state in the solvent.

The impact heating agent (G1) is supersaturated with a solvent, and is in a very unstable state, so it hardens easily even with a slight impact, and can release heat contained in a liquid state. The impact heat generating agent (G1) may generate heat by being impacted by a pressurizing agent (G6), which will be described later.

It is preferable that 0.2 parts by weight of the impact heating agent (G1) is included. When the amount of the impact heating agent (G1) is less than 0.2 parts by weight, the exothermic effect is not large, and when it exceeds 0.2 parts by weight, the weight of the condensation inhibitor (G) increases and the composition In (corresponding to the reference numeral 'GS' in FIG. 5), there is a problem in that the dew condensation inhibitor (G) sinks down and the dispersibility is poor.

The endothelial agent G2 surrounds the impact heating agent G1, and as described above, may include polyurea formed through interfacial polycondensation of tolylene diisocyanate and ethylenediamine.

When tolylene diisocyanay and ethylenediamine are stirred, interfacial polycondensation to form a shell (endodermis), but the presence of unreacted amine and the mixing process of oxygen and nitrogen atoms, or the amount present in other molecules in the composition A positive charge can be formed by attracting charged hydrogens, etc., through dipole interactions.

Illustratively, the impact heating agent (G1) may be accommodated in the endothelial agent (G2) in a liquid state by being heated after being stirred with tolylene diisocyanay and ethylenediamine in a solid state, and the impact heating agent (G1) is the endothelium The process existing inside the second (G2) is not limited to the above method and may vary.

The endothelial agent (G2) preferably contains 0.1 parts by weight. When the amount of the endothelial agent (G2) is less than 0.1 parts by weight, the impact heat generating agent (G1) containing 0.2 parts by weight cannot be sufficiently wrapped with a sufficient thickness to form a liquid impact heating agent ( G1) may be lost, and when it exceeds 0.1 parts by weight, there is a problem in that the heat generated by the impact heating agent (G1) is not easily transferred to the outside of the dew condensation inhibitor (G).

The envelope (G3) surrounds the endothelium (G2) as shown in FIG. 5 and is disposed outside the endothelium (G2), as described above, sulfur-cured ethylene-propylene diene monomer (Ethylene Propylene Diene Rubber) 0.3 It may contain parts by weight.

Ethylene-propylene diene monomer (EPDM) is obtained by adding a non-conjugated diene during the hybrid polymerization of ethylene and propylene, and has excellent water resistance and ozone resistance.

Illustratively, the EPDM may include an ethylene-propylene copolymer, treated calcined kaolin vinyl silane, stearic acid, zinc oxide, trimethylquinoline, a paraffinic plasticizer, a processing aid, and a conductive carbon black.

EPDM is a hybrid polymer capable of peroxide or sulfur vulcanization, and EPDM with added sulfur has a faster shrinkage rate at a low temperature of 5° C. or less than EPDM with added peroxide.

That is, the sulfur-cured ethylene-propylene diene monomer is sulfur-added to the EPDM, and may further include dithiomorpholine, tetramethylthiuram disulfide, dibutyldithiocarbonate zinc, and ethylene thiourea in addition to sulfur.

It is preferable that 0.3 parts by weight of the sulfur-cured ethylene-propylene diene monomer in the shelling agent (G3) is included, but when less than 0.3 parts by weight is used, the coating agent (G2) to be described later and the heat conduction spacer to be described later are not sufficiently wrapped with a sufficient thickness. There is a problem in that the weight of the anti-condensation agent (G) increases when it exceeds 0.3 parts by weight.

The cationic agent (G4) is provided on the outer and inner surfaces of the shelling agent (G3), respectively, and as described above, magnetite, polyacrylic acid and polyoxyethylene are included. Thus, it was used to add the polarity of the envelope (G3).

Magnetite is magnetic when it receives an external magnetic field, but when the external magnetic field is removed, the residual magnetism disappears and there is no side effect due to residual magnetism. The magnetite may be embedded in the outer and inner surfaces of the envelope G3, respectively.

Polymethacrylic acid is coated on the surface of the magnetite, and contains a plurality of carboxyl groups to form a coordination bond with the magnetite at multiple bonding points, so that it is possible to increase the coating stability.

Polyoxyethylene may react with a carboxyl group that does not form a coordination bond with magnetite on the surface of polymethacrylic acid to form a stable bond through an amide bond to impart positive charge properties to the magnetite. The positive surface charge of the cationic agent (G4) may have a surface zeta potential of +30 mV or more.

It is preferable that 0.2 parts by weight of the cationic agent (G4) is used, but when it is less than 0.2 parts by weight, the positive charge is not sufficient, and when it exceeds 0.2 parts by weight, there is a problem in that the weight of the condensation inhibitor (G) is excessively increased.

The heat conduction spacer (G5) is provided between the endothelial material (G2) and the sheathing material (G3) to separate the endothelial material (G2) and the sheathing material (G3). Carbon fiber was used. The carbon fiber may have a thermal conductivity of about 200 W/mK, and may serve to transfer the heat generated by the impact heat generating agent (G1) to the shell material (G3) side.

It is preferable that 0.4 parts by weight of the heat conduction spacer (G5) is included. If it is less than 0.4 parts by weight, heat conduction is not sufficient. There is a problem of increasing

The pressurizing agent (G6) includes iron, is provided on the inner surface of the envelope (G3) to protrude inward, and may be provided in plurality at intervals from the inner surface of the envelope (G3).

The pressurizing agent (G6) applies an impact to the impact heat agent (G1) by pressing the impact heat agent (G1) as the shell material (G3) contracts, and preferably contains 0.3 parts by weight, but less than 0.3 parts by weight If it is, it is not possible to apply a sufficient impact to the impact heating agent (G1), and when it exceeds 0.3 parts by weight, there is a problem in that the weight of the condensation inhibitor (G) is excessively increased.

[A] of FIG. 5 shows a state in which the envelope (G3) is not contracted at a temperature exceeding 5°C. The sheathing agent (G3) and the endothelial material (G2) are spaced apart by a heat conductive spacer (G5), and their length in a state in which the sheathing material (G3) is not contracted, such as at a temperature exceeding 5°C of the above-described pressurizing agent Since the distance between the tentative sheathing agent G3 and the endothelial material G2 is shorter, the pressurizing agent G6 cannot pressurize the impact heating agent G1 in a state in which the sheathing agent G3 is not contracted.

As described above, since the envelope (G3) and the endothelial material (G2) have a positive charge, the endothelium (G2) and the envelope material (G3) generate a repulsive force, so that the envelope (G3) is not contracted. The pressurizing agent provided on the inner surface of the agent (G3) suppresses the pressure of the endothelial agent (G2).

In addition, when there are a large number of units (GU) of the condensation inhibitor (G), the neighboring units (GU) are spaced apart from each other by the repulsive force between the positively charged envelopes (G3). Dispersibility can be improved.

[B] of FIG. 5 is a view showing a state in which the envelope (G3) is contracted at a temperature of 5° C. or less. If the temperature of the present composition containing the dew condensation inhibitor (G) drops to 5 ° C or less, as described above, the envelope (G3) is contracted, and the separation distance between the envelope (G3) and the endothelium (G2) is is decreased, and the pressurizing agent G6 provided on the inner surface of the outer covering agent G3 penetrates the distance between carbon fibers or between the pores of the carbon fibers to press the endothelial material G2, so that the inner surface of the endothelial material G2 It is possible to apply an impact to the impact heating agent (G1) provided in the.

The impact heat agent (G1) generates heat as an impact is applied, and the heat is transferred to the shell agent (G3) through the heat conduction spacer (G5), and the temperature of the composition through the shell agent (G3) is increased

Therefore, it suppresses the decrease in the temperature of the container in which the composition is accommodated, thereby inhibiting dew from forming in the container in which the composition is accommodated, thus effectively inhibiting the inflow of unnecessary water into the composition as well as the composition By suppressing the freezing of dew on the outer surface of the container to be accommodated (for example, the chamber 11) makes it easier to manage the container.

In addition, as the temperature of the present composition is lowered, there is also an advantage that it is possible to suppress the deterioration of the compatibility of each component.

In addition, when the present container is injection molded as in the present method and manufactured as the main container, it is also possible to effectively suppress the formation of dew and freezing on the outer surface of the container.

Through this, it is possible to facilitate the manufacturing process (the present method) of the elastic container using the present composition in cold weather such as winter, and to improve the characteristics of the present container manufactured by the present method.

It goes without saying that the envelope (G3) may be liquefied again later by the impact heating agent (G1) or heat applied from the outside to be restored to a reusable state. Various known techniques may be used for externally applying heat to the envelope (G3).

The present invention described above with reference to the accompanying drawings is capable of various modifications and changes by those skilled in the art, and such modifications and changes should be construed as being included in the scope of the present invention.

Mixer: 1 Chamber: 11
First clamp: 13 First coupling portion: 14
First tube body: 141 First fastening member: 142
Second clamp: 15 Second coupling portion: 16
Second pipe body: 161 Second fastening member: 162
Rotation means: 17 Vertical shaft member: 171

Claims (4)

100 parts by weight of a first resin comprising at least one of polypropylene and polyethylene; and
10 to 110 parts by weight of a second resin including a propylene-based elastomer (PBE);
including,
Containing 1.5 parts by weight of anti-condensation agent (G),
The anti-condensation agent (G),
0.2 parts by weight of an impact heating agent (G1) containing sodium acetate, 0.1 parts by weight of an endothelial agent (G2) containing polyurea formed through interfacial polycondensation of tolylene diisocyanate and ethylenediamine , 0.3 parts by weight of a shelling agent (G3) containing sulfur-hardened ethylene-propylene diene monomer (Ethylene Propylene Diene Rubber), magnetite, polymethacrylic acid, polyoxyethylene, cation containing polyoxyethylene (G4) 0.2 parts by weight, an aspect ratio of 20 or more, including 0.4 parts by weight of a heat conductive spacer (G5) containing carbon fibers, 0.3 parts by weight of a pressurizing agent (G6) containing iron (fe),
The endothelial material (G2) surrounds the impact heat generating agent (G1), the outer skin material (G3) surrounds the endothelial material (G2) and at the same time shrinks at a temperature of 5°C or less, and the heat conduction spacer (G5) is It is provided between the endothelial agent (G2) and the shelling agent (G3), and the magnetite of the cationic agent (G4) is provided on the outer and inner surfaces of the shelling agent (G3), respectively, and the pressurizing agent (G6) is A composition for an elastic container, characterized in that the length of the pressurizing agent is shorter than the separation distance between the endothelial material (G2) and the sheathing agent (G3), provided a plurality of spaces are provided on the inner surface of the envelope (G3).
Using a mixer, 100 parts by weight of the first resin containing at least one of polypropylene and polyethylene and 10 to 110 parts by weight of the second resin containing propylene-based elastomer (PBE) are mixed to provide elasticity Preparing a composition for a container (S10); and
preparing an elastic container by injecting the composition for an elastic container into an injection machine and performing injection molding (S20);
including,
The mixer is
a pair of first and second chambers;
a horizontal shaft member disposed between the first and second chambers;
a first clamp that surrounds the first chamber and has bolt holes through which bolts pass through at both ends;
a first coupling part provided in the first clamp and connected to one end of the horizontal shaft member;
a second clamp that surrounds the second chamber and has bolt holes at both ends to which the bolts are fastened;
a second coupling part provided in the second clamp and connected to the other end of the horizontal shaft member;
a rotating means for rotating the horizontal axis member about the horizontal direction as a central axis;
including,
The first clamp includes an elastic body surrounding the first chamber, and a pair of flanges extending in a horizontal direction from both ends of the elastic body to face each other,
The bolt hole is formed in both of the pair of flanges,
The first coupling portion extends in the horizontal direction from one side of the first clamp, a first tube body having a hollow inside so that an end of the horizontal shaft member is interpolated, and a horizontal shaft member inserted into the hollow through the first tube body A first fastening member for pressing the end of the
A screw thread is provided on an outer periphery of the first fastening member, and a nut member fastened to the first fastening member is provided on the first tube body,
The rotation means includes a vertical shaft member geared to the horizontal shaft member, and a driving unit for rotating the vertical shaft member, wherein when the vertical shaft member rotates, the horizontal shaft member is rotated with respect to the horizontal direction as a center of rotation A method for manufacturing an elastic container.

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