JP6364181B2 - Frozen noodle manufacturing tray sheet and frozen noodle manufacturing tray - Google Patents

Description

  The present invention relates to a tray for producing frozen noodles and a tray for producing frozen noodles formed using the same.

  Frozen noodles such as udon and spaghetti usually circulate in the form of bags. When producing the packed frozen noodles, a frozen noodle production tray (hereinafter also simply referred to as “tray”) is generally used for boiled noodles and freeze-molded. After the noodles are frozen and molded, the noodle chunks are removed from the tray (de-breading) and filled into bags, thereby producing the packed frozen noodles. A material such as metal or plastic is used for the tray.

  Here, as a method of removing the noodle mass from the tray, there are a method of inverting the tray and applying an impact using a hammer or the like, a method of twisting the tray, etc. A twisting method is preferred. As materials for trays used in such a method, plastic materials such as polyethylene, polypropylene, polyethylene terephthalate, polycarbonate, and polystyrene are known (see, for example, Patent Document 1).

JP 2012-244945 A

  By the way, frozen noodle manufacturing trays are required to have impact resistance in cold environments (cold impact resistance) and suppression of drawdown during vacuum forming to facilitate molding. Furthermore, when applying the method of twisting the tray described above, resistance (rigidity) to twisting is required. However, a tray material having a good balance of these performances has not been known so far.

  Therefore, the present invention provides a frozen noodle manufacturing tray sheet having a well-balanced cold shock resistance, draw-down suppression during vacuum forming, and resistance to twist, and a frozen noodle manufacturing tray formed using the same. For the purpose.

The present invention has a melt flow rate is 0.1-5 g / 10 min, and the polyethylene and density of 930 k g / ^{m 3} or less, a melt flow rate is 0.1 to 10 g / 10 min, and There is provided a tray sheet for producing frozen noodles comprising a olefin resin composition containing polypropylene having a melting point of 140 ° C. or higher, and having a mass ratio of polyethylene to polypropylene of 25:75 to 70:30. Such a tray sheet for producing frozen noodles has a well-balanced cold shock resistance, the ability to suppress drawdown during vacuum forming, and the resistance to twisting.

  The haze value of the frozen noodle manufacturing tray sheet is preferably 10% or more from the viewpoint of easily viewing the damaged portion when the tray is damaged.

  The swell ratio of polyethylene is preferably 1.2 or more from the viewpoint of further suppressing the drawdown during vacuum forming and improving the rigidity of the tray.

  The thickness of the tray for producing frozen noodles is preferably 250 to 1500 μm from the viewpoint of improving the rigidity of the tray.

  The present invention is also formed from a sheet laminate comprising at least one of the above-mentioned frozen noodle manufacturing tray sheet or the above-mentioned frozen noodle manufacturing tray sheet, and the thickness of the layer occupies 50 to 100% of the whole. A frozen noodle production tray is provided. Since such a tray for producing frozen noodles uses the above-described tray for producing frozen noodles, it has a well-balanced cold shock resistance and resistance to twisting.

  ADVANTAGE OF THE INVENTION According to this invention, the tray for frozen noodle manufacture which has the balance of cold shock resistance, the suppression of the drawdown at the time of vacuum forming, and the tolerance with respect to a twist, and the tray for frozen noodle manufacture formed using this are provided. can do.

  Hereinafter, although one embodiment of the present invention is described in detail, the present invention is not limited to the following embodiment.

  The tray for producing frozen noodles of this embodiment is composed of an olefin resin composition containing polyethylene and polypropylene. In addition, the tray for producing frozen noodles of the present embodiment includes at least one layer of the above-mentioned frozen noodle manufacturing tray sheet or the frozen noodle manufacturing tray sheet, and the thickness of the layer occupies 50 to 100% of the whole. It is formed from a sheet laminate. Details will be described below.

(polyethylene)
The melt flow rate of polyethylene is 0.1 to 5 g / 10 min. This melt flow rate is preferably 0.15 to 3 g / 10 min from the viewpoint of improving the cold shock resistance of the tray and more highly suppressing the drawdown during vacuum forming, and is 0.2 to 2 g / min. 10 minutes is more preferable, and 0.25 to 1.8 g / 10 minutes is even more preferable.
In addition, the melt flow rate of polyethylene is a value measured under conditions of a temperature of 190 ° C. and a load of 21.18 N according to the method defined in JIS K7210.

The density of the polyethylene is 930 k g / ^{m 3} or less. This density, from the viewpoint of improving the low temperature impact resistance of the tray, preferable to be 928 k g / ^{m 3} or less, more preferable to be 926 k g / ^{m 3} or less, if it is 924 k g / ^{m 3} or less Further preferred. Further, the lower limit of this density is not particularly limited, for example, be a 900 k g / ^{m 3} or more.
In addition, the density of polyethylene is a value measured according to the method prescribed | regulated to A method among JISK7112-1980 about the sample which adjusted based on JISK7100.

  Polyethylene includes ethylene homopolymers within the above melt flow rate and density range, or co-polymers with α-olefins such as 1-butene, 1-hexene, 1-octene and 4-methyl-1-pentene. A polymer can be used. Specifically, high-density polyethylene, low-density polyethylene, and linear low-density polyethylene. Among these, from the viewpoint of the uniformity of the composition with polypropylene, high-density polyethylene and linear low-density polyethylene are preferable, and linear low-density polyethylene is more preferable for the same reason.

The swell ratio (SR) of polyethylene is preferably 1.2 or more, more preferably 1.25 or more, from the viewpoint of highly suppressing the drawdown during vacuum forming and improving the rigidity of the tray. 1.3 or more is more preferable. The upper limit of the swell ratio is not particularly limited, but can be set to 1.7 or less, for example.
In addition, the swell ratio of polyethylene is a value measured according to the method described in Examples.
Examples of the method for setting the swell ratio in the above range include a method of increasing the molecular weight, that is, decreasing the melt flow rate, or forming a structure in which molecules are easily entangled in a molten state (for example, a long chain branched structure). .

  The above-mentioned polyethylene is, for example, a solid particulate promoter component in which a promoter component such as an organoaluminum compound, an organoaluminum oxy compound, a boron compound, and an organozinc compound is supported on a particulate carrier, an alkylene group, a silylene group, and the like. It can be produced by polymerizing ethylene in the presence of a polymerization catalyst comprising a metallocene complex having a ligand having a structure in which two cyclopentadienyl-type anion skeletons are bonded to each other by a crosslinking group.

  Moreover, as said polyethylene, a commercially available thing can also be utilized, for example, Sumikasen EPPE GH030, Sumikasen GMH GT050, Sumikasen L211, Sumikasen-E FV203 (above, Sumitomo Chemical Co., Ltd. make, brand name) etc. are obtained. Is possible.

(polypropylene)
The melt flow rate of polypropylene is 0.1 to 10 g / 10 min. This melt flow rate is preferably 0.2 to 5 g / 10 min from the viewpoint of improving the cold shock resistance of the tray and more highly suppressing the drawdown during vacuum forming, and 0.3 to 2 g / min. 10 minutes is more preferable, and 0.4 to 1.4 g / 10 minutes is even more preferable.
The melt flow rate of polypropylene is a value measured under the conditions of a temperature of 230 ° C. and a load of 21.18 N according to the method defined in JIS K7210.

The melting point of polypropylene is 140 ° C. or higher. This melting point is preferably 145 ° C. or higher, more preferably 150 ° C. or higher, and further preferably 155 ° C. or higher, from the viewpoint of improving cold shock resistance. The upper limit of the melting point is not particularly limited, but can be set to 170 ° C. or lower, for example.
In addition, melting | fusing point of a polypropylene is a value measured by the method as described in an Example.

  Examples of the above-mentioned polypropylene include other monomers copolymerizable with propylene, such as random copolymers of ethylene and α-olefin, terpolymers, block copolymers, and propylene homopolymers. it can. As the α-olefin of the copolymerizable monomer for polymerizing the random copolymer, an α-olefin having 4 or more carbon atoms is preferably used, and more preferably an α-olefin having 4 to 10 carbon atoms. Specific examples of the α-olefin having 4 to 10 carbon atoms include linear monoolefins such as 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene and 1-decene; Branched monoolefins such as 3-methyl-1-butene, 3-methyl-1-pentene, 4-methyl-1-pentene; vinylcyclohexane and the like. Among these, as the polypropylene in the present invention, a random copolymer having a melting point of 140 ° C. or higher is preferable because the easy-to-use rigidity of the tray is easily expressed, and 5 to 30 parts by weight of an ethylene-propylene elastomer is added. A finely dispersed block copolymer is particularly preferred.

  The stereoregularity of the polypropylene described above may be any of isotactic, syndiotactic and atactic. In the present embodiment, syndiotactic or isotactic polypropylene is preferably used from the viewpoint of heat resistance.

  The above-mentioned polypropylene uses, for example, a solution polymerization method using an inert solvent typified by a hydrocarbon compound such as hexane, heptane, octane, decane, cyclohexane, methylcyclohexane, benzene, toluene, xylene, and a liquid monomer as a solvent. It can be produced by a bulk polymerization method or a gas phase polymerization method in which a gaseous monomer is polymerized as it is. Polymerization by these methods may be carried out batchwise or continuously.

  Moreover, as said polypropylene, a commercially available thing can be utilized, for example, Sumitomo Nobrene AH1311 (Sumitomo Chemical Co., Ltd. make, brand name) etc. are available.

(Olefin resin composition)
The olefin resin composition of this embodiment contains the above-described polyethylene and polypropylene in a mass ratio of 25:75 to 70:30. The ratio of polyethylene to polypropylene in the olefin resin composition is preferably 30:70 to 65:35, more preferably 35:65 to 60:40, from the viewpoint of improving cold shock resistance, and 40:60. More preferably, it is -55: 45.

  The olefin resin composition of the present embodiment may be composed only of the above-mentioned polyethylene and polypropylene, and if necessary, antioxidants such as phenols, phosphoruss, hindered amines, hydroxybenzophenones, hydroxys UV absorbers such as benzotriazoles and hydroxytodiazines, lubricants such as metal phosphates and carboxylates, benzylidene sorbitol nucleating agents, higher fatty acid esters and higher fatty acid metal salts, neutralizers, charging An additive such as a colorant such as an inhibitor, a plasticizer, a dispersant, an antifogging agent, an antibacterial agent, an organic porous powder, titanium oxide, carbon black, bengara, and metal phthalocyanine may be contained. These additives may be used individually by 1 type, and may be used in combination of 2 or more type. In addition, the addition amount of an additive is not specifically limited, For example, 10 mass% or less, ie, content of polyethylene and a polypropylene, can be 90 mass% or more.

  Moreover, the olefin resin composition of this embodiment may contain the thermoplastic resin different from the above-mentioned polyethylene and polypropylene as needed. Examples of the thermoplastic resin include linear low density polyethylene, high density polyethylene, medium density polyethylene, ultra low density polyethylene, high pressure method low density polyethylene, ethylene-vinyl acetate copolymer, ethylene- (meth) acrylic acid copolymer. Polymer, ethylene- (meth) acrylic acid ester copolymer, metal salt of ethylene- (meth) acrylic acid copolymer, polystyrene, ABS resin, styrene / butadiene block copolymer and its hydrogenated product, styrene / isoprene block Styrene polymers such as copolymers and hydrogenated products thereof, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 6, nylon 66, nylon 11, nylon 12 and nylon 6,66, polycarbonate, poly Methyl methacrylate , Polyacetal, polyphenylene sulfide, ethylene-propylene copolymer rubber, styrene-based thermoplastic elastomer, olefin-based thermoplastic elastomer, polyester thermoplastic elastomer, polyurethane thermoplastic elastomer, a polyamide-based thermoplastic elastomers.

  Examples of the method for producing the olefin resin composition include a method of dry blending or melt blending polyethylene and polypropylene and other components such as additives as necessary. Examples of the dry blending method include a method using various blenders such as a Henschel mixer and a tumbler mixer. Examples of the melt blending method include a single screw extruder, a twin screw extruder, a Banbury mixer, a hot roll, and the like. The method of melt-kneading using these various mixers is mentioned. In the case of adding an additive, a masterbatch containing 5-50 times the required amount of the additive in advance is manufactured into a pellet by a melt blending method, and the masterbatch may be dry blended in a predetermined amount. Good.

(Sheet)
Examples of a method for forming a sheet made of the olefin resin composition of the present embodiment include an extrusion method such as an inflation method and a T-die cast method, an injection molding method, a compression molding method, and a calendar molding method. Among these forming methods, the T die casting method is preferable from the viewpoint of high sheet productivity and high product quality. In the T-die casting method, a predetermined resin composition is supplied to an extruder temperature-controlled at about 180 to 280 ° C., plasticized with a screw, and melt kneaded continuously, and extruded from a T-die into a sheet shape. At this time, the screw may be uniaxial or biaxial. In the case of a single shaft, the screw may be a full flight type or a barrier flight type, and a dull mage type, mudock type, or a unimelt type kneading unit may be used in the measuring section. Further, from the viewpoint of improving the uniformity of the thickness in the sheet flow direction, it is desirable that a gear pump is provided and the sheet can be sent to the T-die under the condition that the pressure fluctuation is controlled within 0.3 MPa. Furthermore, in order to remove foreign matter from the product sheet, a wire mesh or sintered fiber finer than 200 mesh may be disposed at the tip of the extruder.
The molten sheet-like material extruded from the T-die is brought into contact with the cooling roll of the casting equipment whose temperature is adjusted to 10 to 80 ° C., and the molten sheet-like material is cooled and solidified to produce a predetermined sheet. It is a method. Here, in order to bring the molten sheet-like material into contact with the cooling roll, when using an air chamber, an air knife, electrostatic pinning or the like as an auxiliary contact means, or instead of these auxiliary contact means, a metal rigid body An auxiliary close contact means using a roll, a metal elastic roll, a rubber roll, or the like and using a roll that sandwiches and forms a molten sheet-like material with a cooling roll can be used.
When the frozen noodle production tray sheet of the present invention is formed into a tray shape by vacuum forming, if the shrinkage due to heat is severe in the preheating stage of vacuum forming, the sheet is deformed before vacuum forming and the tray quality is stabilized. This is not preferable because it may impair the performance. In order to suppress the shrinkage due to heat, it is preferable to use an air knife, electrostatic pinning, a metal elastic roll, or a rubber roll as an auxiliary contact means when manufacturing a sheet by the T-die casting method. The orientation can be suppressed, which is preferable.

  A metal rigid roll whose surface is coated with hard chrome plating or ceramic spraying is used for the above-described cooling roll. By changing the roll surface roughness, the HAZE value and friction coefficient of the sheet can be controlled. . In particular, when a metal elastic roll or rubber roll is used as an auxiliary adhesion means, by selecting the roll surface, it is possible to give a shape to both surfaces of the obtained sheet and control the HAZE value, the friction coefficient, and the like.

  A sheet laminate (multilayer sheet) may be formed by employing a coextrusion method, an extrusion lamination method, or the like as a method for forming a sheet made of the olefin resin composition of the present embodiment. Further, a gas or water vapor barrier layer such as oxygen; a sound absorbing layer; a light shielding layer; an oxygen absorbing layer; an adhesive layer; an adhesive layer; a colored layer; a conductive layer;

  When the layer made of the thermoplastic resin is laminated on the layer made of the olefin resin composition of the present embodiment, it is preferable to manufacture by a coextrusion method from the viewpoint of productivity. In the coextrusion method, the olefin resin composition of the present embodiment and one or more thermoplastic resin compositions are respectively supplied to separate extruders connected to one T die, plasticized, melt kneaded, and T Sent in the die direction. And it arrange | positions in the order of lamination | stacking with a feed block or a combining adapter. In the feed block, they are stacked before entering the T die, spread in a film shape in the T die, and extruded from the T die as a multilayer sheet (feed block method). The latter combining adapter is spread by the manifold in the T die for each layer, then laminated in the vicinity of the T die outlet, and extruded from the T die (multi-manifold method). In general, the multi-manifold method has a large T-die, so the air gap cannot be made very small, so there is a possibility that thermal shrinkage of the formed sheet may be a problem, but the melt viscosity of the resin in each extruder is Its merit is high, such as easy handling in different cases. Here, the air gap is preferably about 60 to 180 mm. The air gap is preferably short.

  In addition, about the sheet | seat laminated body which has layers other than the layer which consists of an olefin resin composition of this embodiment, the thickness of the layer which consists of this olefin resin composition is sheet lamination from a viewpoint which exhibits the effect of this invention more highly. It is preferable to occupy 50 to 100% of the whole body.

  The number of layers in the above-mentioned sheet laminate can be, for example, 2 to 4 layers, preferably 2 to 3 layers. As a layer other than the layer composed of the olefin resin composition of the present embodiment, the same material as that of the olefin resin composition of the present embodiment may be used from the viewpoint of exhibiting the effects of the present invention to a higher degree. preferable.

In the case of the above-mentioned sheet laminate, antioxidants such as phenolic, phosphorus and hindered amines, hydroxybenzophenone, hydroxybenzotriazole, hydroxytodiazine, which are added to the thermoplastic resin of each layer as necessary UV absorbers such as, phosphate metal salts and carboxylate metal salts, benzylidene sorbitol nucleating agents, higher fatty acid esters and higher fatty acid metal salts and other lubricants, neutralizers, antistatic agents, plasticizers, dispersants Further, additives such as colorant such as antifogging agent, antibacterial agent, organic porous powder, titanium oxide, carbon black, bengara and metal phthalocyanine may be contained. These additives may be used individually by 1 type, and may be used in combination of 2 or more type. If a colorant is added, it need not be added to all layers. If it is added only to the layer that does not form the surface layer of the sheet, a high-grade feeling is easily developed in the sheet, and when it is added to the layer that forms the surface layer, there is an advantage that the amount of the colorant added is generally small.

  The thickness of the above-mentioned sheet or sheet laminate is preferably 250 to 1500 μm from the viewpoint of improving the rigidity of the tray.

  The haze value of the above-mentioned sheet or sheet laminate is preferably 10% or more, more preferably 30% or more, and more preferably 50% or more from the viewpoint of easily viewing the damaged portion when the tray is damaged. Is more preferable, and is particularly preferably 70% or more.

(tray)
A tray can be manufactured by thermoforming the above-mentioned sheet. Examples of the thermoforming method include a vacuum forming method, a pressure forming method, a vacuum pressure forming method, and a hot plate pressure forming method. Specifically, free drawing method, plug and ring molding method, ridge molding method, matched mold molding method, straight molding method, drape molding method, reverse draw molding method, air slip molding method, plug assist molding method, plug assist reverse Examples thereof include a draw molding method and a contact heating / pressure air molding method.

  The shape of the tray can be a conventionally known shape, and is not particularly limited, but it is also effective to have ribs on the side surface, bottom surface, flange portion, etc. of the tray in order to increase the rigidity of the tray. The width and height of the rib are generally 0.5 to 10 mm and 0.5 to 5 mm, respectively. The number of ribs is about 1 to 10 per side.

  EXAMPLES Hereinafter, although this invention is demonstrated in more detail based on an Example, this invention is not limited to these Examples. The physical properties were evaluated by the following methods.

(1) Melt flow rate of polyethylene and polypropylene (MFR, unit: g / 10 min)
According to the method specified in JIS K 7210, the load was 21.18 N, polyethylene was measured at a temperature of 190 ° C., and polypropylene was measured at a temperature of 230 ° C.

(2) Polyethylene swell ratio (SR)
In the measurement of the melt flow rate in (1), a polyethylene strand extruded at a length of about 20 to 40 mm from an orifice was cut under conditions of a temperature of 190 ° C. and a load of 21.18 N, cooled in air, and solid state Strand was obtained. Next, the diameter D (unit: mm) of the strand at a position of about 3 mm from the tip of the upstream side of extrusion of the strand (lower end before strand cutting) is measured, and the diameter D is measured as the orifice diameter 2.095 mm (D ₀ ). The value (D / D ₀ ) divided by was calculated as the swell ratio.

(3) Density of polyethylene and polypropylene (d, unit: kg / m ³ )
It measured according to the method prescribed | regulated to A method among JISK7112-1980. The sample used was adjusted according to JIS K7100.

(4) Melting point of polypropylene (Tm, unit: ° C)
About 10 mg of a specimen cut out from a sheet having a thickness of about 0.5 mm produced by hot pressing was used as a measurement sample, and measurement was performed using a differential scanning calorimeter (Diamond DSC manufactured by PerkinElmer). In the measurement, the measurement sample was held at 230 ° C. for 5 minutes, and then cooled to 50 ° C. at a temperature decrease rate of 5 ° C./min. Thereafter, the temperature was maintained at 50 ° C. for 1 minute, and then the temperature was raised to 200 ° C. at 5 ° C./min. The temperature of the maximum peak of the obtained melting endothermic curve was defined as the melting point (Tm).

(5) Cold Shock Resistance of Sheets Cold shock resistance was evaluated by the following procedure using the sheets obtained in Examples and Comparative Examples cut out to 100 mm × 100 mm as measurement samples.
A) The measurement sample was placed in a freezer adjusted to -35 ° C for 5 hours.
B) The measurement sample was taken out and fixed at a height of 50 mm from the ground.
C) A 500 g, 20φ iron ball was dropped from the height shown in Tables 1 and 2 at the center of the measurement.
D) No change was evaluated as "A", the contact part was deformed as "B", and cracks (brittle fractured) were evaluated as "C".

(6) Sheet rigidity Using JIS K7133 No. 2 dumbbells, the sheets obtained in Examples and Comparative Examples were punched out and used as test pieces. With reference to JIS K7161, it is attached to a tensile testing machine with a chuck-to-chuck distance of 80 mm, a tensile test is performed at a tensile speed of 1 mm / min, and the elongation is a line connecting a stress of 0.2% and a stress of 0.4%. The tensile elastic modulus was calculated from the inclination, and this was used as the sheet rigidity.

(7) Haze value of sheet The haze value of sheets obtained in Examples and Comparative Examples was measured according to JIS K 7105.

(8) Sheet Drawdown A sample cut out to a size of 320 mm × 320 mm from the center of the sheet obtained in the examples and comparative examples is sandwiched between spacers of outer frame 340 mm × 340 mm and middle frame 300 mm × 300 mm. It was fixed with a clamp. Next, the sample was heated to 160 ° C. with a heater set to 500 ° C., and the drawdown state for several seconds during heating was visually confirmed. If the degree of this drawdown is too large, the molded product may be wrinkled, and the smaller the degree, the better the workability during thermoforming.

(Examples 1-4, Comparative Examples 1-3)
Polyethylene (PE) and polypropylene (PP) are mixed together at the composition ratio (mass ratio) shown in Table 1, and then the sheet is formed by bank molding under the following conditions using an extruder with a screw diameter of 65 mmφ and L / D = 33 Processing was performed. The thickness of the obtained sheet was 500 μm, and the evaluation results are shown in Table 1.
Processing temperature: 260 ° C
Cooling roll temperature: 60 ° C
Auxiliary adhesion means: rubber roll (silicon rubber roll)
T die width: 400mm
Discharge rate: 1.2kg / h
Take-off speed: 4.0 m / min
Air gap: 90mm
The physical properties of the materials described in Tables 1 and 4 are shown in Tables 2 and 3.

なお、表中、「総合」の欄において、「◎」は冷凍麺製造用トレーとして特に好適に用いることできることを示し、「○」は冷凍麺製造用トレーとして好適に用いることを示し、「▲」は冷凍麺製造用トレーとして用いるには難があることを示す。

In the column of “Comprehensive” in the table, “◎” indicates that it can be particularly suitably used as a tray for producing frozen noodles, “◯” indicates that it is suitably used as a tray for producing frozen noodles, and “▲ "" Indicates that it is difficult to use as a tray for producing frozen noodles.

(Examples 5 and 6)
Resin that forms the surface layer after collectively mixing polyethylene (PE) and polypropylene (PP) (mass ratio) with the ratio (mass ratio) shown in Table 4 for the resin composition constituting each of the surface layer and the intermediate layer The composition is sheet processed under the following conditions using an extruder S with a screw diameter of 70 mmφ and L / D = 28, and the resin composition constituting the intermediate layer is an extruder B with a screw diameter of 120 mmφ and L / D = 28 Went. The obtained sheet was 450 μm, and the evaluation results are shown in Table 4.
Processing temperature: 260 ° C
Cooling roll temperature: 42 ° C
Auxiliary adhesion means: Air knife T die width: 1150mm
Discharge rate: 180kg / h
Take-off speed: 6.0 m / min
Air gap: 110mm

Claims (4)

Polyethylene having a melt flow rate of 0.1 to 5 g / 10 min and a density of 930 kg / m ³ or less, a melt flow rate of 0.1 to 10 g / 10 min, and a melting point of 140 ° C. or higher. An olefin resin composition containing a certain polypropylene (excluding those containing a nucleating agent) ,
The polyethylene and the weight ratio of the polypropylene 35: 65-60: 40 der is, and frozen noodle manufacturing tray sheet has a haze value of 70% or more. The tray sheet for frozen noodle production according to claim 1, wherein the polyethylene has a swell ratio of 1.2 or more. The frozen noodle manufacturing tray sheet according to claim 1 or 2 , wherein the thickness is 250 to 1500 µm. A sheet for trays for producing frozen noodles according to any one of claims 1 to 3 , or a sheet for trays for producing frozen noodles according to any one of claims 1 to 3 , wherein the thickness of the layer occupies 50 to 100% of the whole A tray for producing frozen noodles formed from a laminate.