JP2014015590A - Vinylidene chloride resin wrap film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vinylidene chloride resin wrap film having high food safety because of a relatively low total content of additives, excellent in adhesion, drawer property and moldability, and capable of having its uncomfortable stiff feeling when touched improved caused at the time of a reduction of the total content of additives.SOLUTION: A vinylidene chloride resin contains (A) a vinylidene chloride resin and a dibutyl sebacate, (B) an epoxidized soybean oil and (C) a glycol as a dimer or more, and the content of the (A) is 1 to 10 mass%, the content of the (B) is 1 to 10 mass% and the content of the (C) is 0.05 to 0.6 mass%.

Description

  The present invention relates to a vinylidene chloride-based resin wrap film.

  Conventionally, vinylidene chloride-based resin wrap films are excellent in properties such as adhesion and gas barrier properties, and thus have been used in many general households as simple packaging materials for foods and the like.

  As a method for producing a vinylidene chloride-based resin wrap film, an inflation film-forming method is widely known (see FIG. 1). In the inflation film-forming method, a vinylidene chloride resin composition containing all the additives in vinylidene chloride resin is extruded from a die into a tubular shape, the outside of the extruded resin composition is cooled with cold water, a die port, a pinch roll, A vinylidene chloride-based resin wrap film is formed by cooling and solidifying the inside sandwiched by a known refrigerant such as mineral oil. A cylindrical portion sandwiched between the inner die port and the pinch roll at this time is called a sock, and the refrigerant sealed inside is called a sock liquid. An annular double ply film folded with a pinch roll is called a parison. The parison is stretched by reheating and blowing air into the interior (inflation). The obtained double-ply film is slit and peeled to form a single film. Finally, it is wound on a paper tube to obtain a paper tube-wrapped wrap film.

  As an additive in the vinylidene chloride resin composition, a stabilizer, a plasticizer, or the like is used. In order to obtain good processability and good physical properties, for example, an epoxidized vegetable oil represented by epoxidized soybean oil (hereinafter referred to as ESO) is added as a stabilizer, and as a plasticizer, for example, acetylcitric acid. It is widely known to add tributyl (hereinafter referred to as ATBC), dibutyl sebacate (hereinafter referred to as DBS), or the like.

  In Patent Document 1, by providing an aliphatic dibasic acid ester, an epoxidized vegetable oil, and propylene glycol to a vinylidene chloride-based resin composition, it has better wrap film adhesion immediately after production, A technology that achieves the contradictory properties of sexuality and drawability is disclosed.

  In Patent Document 2, propylene glycol is added to the thermoplastic resin to improve the adhesiveness of the wrap film together with liquid auxiliary agents such as (poly) glycerin fatty acid ester, dibasic fatty acid ester, and epoxidized soybean oil. Techniques for adding are disclosed.

Japanese Patent Application No. 2007-529591 Japanese Patent Laid-Open No. 10-330625

  The safety of vinylidene chloride-based resin wrap films currently on the market has already been established. However, with the recent increase in consumers' interest in food safety, there is a need to further increase the safety of wrap films in the future. For example, it is known that additives in a wrap film migrate to food when the wrap film comes into contact with food or during cooking, so reducing the total content of additives in the wrap film Is being considered. However, when the total content of the additives is simply reduced, the processability at the time of forming the wrap film, the adhesiveness required for the wrap film, the drawability, and a suitable hand feeling are impaired.

  On the other hand, by using propylene glycol together as in Patent Document 1 and Patent Document 2, the content of aliphatic dibasic acid ester and epoxidized vegetable oil can be reduced and molding processability and adhesion can be maintained to some extent. Is possible. However, since propylene glycol is more polar than dimer or higher glycol, it tends to bleed out to the outside of the film surface when added to a vinylidene chloride resin composition, resulting in an unpleasant hand feeling of the film. Could not be improved. In addition, there is a problem that the film surface is slimmed due to propylene glycol bleed out.

The present invention has been made in view of the above problems, and the total content of additives is relatively low, thereby improving food safety, and further, adhesion, drawability, molding processability Another object of the present invention is to provide a vinylidene chloride-based resin wrap film that is excellent in the above-mentioned and improved in an unpleasant and harsh feel when the total content of additives is reduced.
In the present specification, the “additive” means a resin other than vinylidene chloride resin, and specifically includes (A), (B), (C), and other blends described later.

The inventors balance the contradictory problems of reducing the total content of additives accompanying the improvement of food safety and improving the feeling of unpleasant and irritating film accompanying the reduction of the total content of additives. As a result of earnest study from the viewpoint of, as a result of selecting a specific plasticizer with a high touch-modifying effect to be added to the vinylidene chloride resin composition, and further limiting the amount of use, consumer demand Vinylidene chloride has an improved feel to the level that satisfies the requirements, significantly reduces the amount of additives transferred during food contact or cooking, and has excellent film adhesion, drawability, and moldability The present inventors have found that a resin-based resin wrap film can be obtained and have completed the present invention.
That is, the present invention is as follows.

[1]
Containing vinylidene chloride resin, dibutyl sebacate (A), epoxidized soybean oil (B), and dimer or higher glycol (C),
The content of (A) is 1 to 10% by mass, the content of (B) is 1 to 10% by mass, and the content of (C) is 0.05 to 0.6% by mass. Is,
Vinylidene chloride resin wrap film.
[2]
The vinylidene chloride resin wrap film according to [1], wherein the content of the vinylidene chloride resin is 80% by mass or more.
[3]
The vinylidene chloride-based resin wrap film according to [1] or [2], wherein the glycol (C) of the dimer or higher is tripropylene glycol.

  According to the present invention, the total content of additives is relatively low, which improves food safety, and is excellent in adhesion, drawability, and moldability, and uncomfortable with reducing additives. A vinylidene chloride-based resin wrap film with improved feel on the film can be obtained.

It is the schematic of the apparatus used in the film forming process of this invention. It is the schematic explaining an extractability test.

  Hereinafter, a mode for carrying out the present invention (hereinafter referred to as “the present embodiment”) will be described in detail. In addition, this invention is not limited to the following embodiment, It can implement by changing variously within the range of the summary.

[Vinylidene chloride resin wrap film]
The vinylidene chloride-based resin wrap film of the present embodiment contains a vinylidene chloride-based resin, dibutyl sebacate (A), epoxidized soybean oil (B), and a dimer or higher glycol (C),
The content of (A) is 1 to 10% by mass, the content of (B) is 1 to 10% by mass, and the content of (C) is 0.05 to 0.6% by mass. It is. Hereinafter, this embodiment will be described in detail.

[Vinylidene chloride resin]
The vinylidene chloride resin used in the present embodiment is not particularly limited as long as it contains a vinylidene chloride unit, and in addition to the vinylidene chloride unit, for example, acrylic acid esters such as vinyl chloride, methyl acrylate, and butyl acrylate; methyl methacrylate, A methacrylic acid ester such as butyl methacrylate; a monomer copolymerizable with vinylidene chloride such as acrylonitrile, vinyl acetate, or the like may be copolymerized. Among these, those containing 85 to 97% by mass of vinylidene chloride units are preferred, those containing 86 to 95% by mass are more preferred, and those containing 87 to 93% by mass are more preferred. Within such a range, it is possible to further suppress deterioration in moldability due to a large amount of vinylidene chloride units and deterioration in touch feeling due to a small amount of vinylidene chloride units.

  The content of the vinylidene chloride resin contained in the vinylidene chloride resin wrap film of the present embodiment is preferably 90% by mass or more, more preferably 93% by mass or more, and further preferably 95% by mass or more. If it is such a range, the total content of additives will be lower, which will further improve food safety.

  In addition, the method of measuring the content of each component from the wrap film varies depending on the analysis object, and the content of the vinylidene chloride resin can be obtained by vacuum drying the re-precipitated filtrate of the wrap film and measuring the weight. . On the other hand, the content of DBS and the dimer or higher glycol can be obtained by extracting an additive from a wrap film using an organic solvent such as acetone and performing gas chromatography analysis. The ESO content can be obtained by gel permeation chromatography analysis of the re-precipitated filtrate of the wrap film.

[Dibutyl sebacate (A)]
DBS (A) used for the wrap film of this embodiment is a kind of aliphatic dibasic acid ester. Examples of the aliphatic dibasic acid ester include dibutyl adipate, di-n-hexyl adipate, di-2-ethylhexyl adipate, dioctyl adipate, etc .; di-2-ethylhexyl azelate, octyl azelate, etc. There are sebacic acid ester systems such as dibutyl sebacate and di-2-ethylhexyl sebacate. Among these, DBS is preferable in that it has a high plasticizing effect on vinylidene chloride-based resins, and even in a small amount, it sufficiently plasticizes the resin and improves moldability.

  The content of DBS (A) is 1 to 10% by mass, preferably 2 to 7%, from the viewpoint of imparting better moldability and preventing excessive adhesion of the wrap film when the additive content is high. It is mass%, More preferably, it is 2.5-5 mass%.

[Epoxidized soybean oil (B)]
ESO (B) used for the wrap film of this embodiment is a kind of epoxidized vegetable oil obtained by epoxidizing edible fats and oils. Epoxidized vegetable oil is widely known as a stabilizer for vinylidene chloride-based resin extrusion processing, and it is essential to add it to the film from the viewpoint of suppressing a change in color tone of the film. Epoxidized vegetable oils include, for example, epoxidized soybean oil and epoxidized linseed oil. Among these, epoxidized soybean oil is used for suppressing deterioration of drawability when a wrap film is stored at a high temperature. preferable.

  From the viewpoints of suppressing color change of the wrap film and preventing stickiness due to bleeding, the content of ESO (B) is 1 to 10% by mass, preferably 1 to 6% by mass, and more preferably 1 to 3% by mass. %.

[Diol or higher glycol (C)]
The dimer or higher glycol (C) used in the wrap film of this embodiment is a kind of alcohol, and more specifically, two carbons of a chain aliphatic hydrocarbon or a cyclic aliphatic hydrocarbon. A compound in which two or more compounds having a structure in which one hydroxyl group is substituted for each atom is bonded via a hydroxyl group. Dimer or higher glycol (C) is characterized by a higher plasticizing effect on vinylidene chloride resin than (monomeric) glycol. Examples of the dimer or higher glycol (C) include, but are not limited to, diethylene glycol, dipropylene glycol, and tripropylene glycol. Among these, since the melt viscosity is low, the molding processability of the vinylidene chloride resin is greatly improved, and the additive is easily distributed selectively in the vicinity of the inside of the surface, so that a high touch modification effect is obtained. In this respect, tripropylene glycol (hereinafter referred to as TPG) is preferable.

  If the content of the dimer or higher glycol (C) is less than 0.05% by mass, the touch modification effect by the dimer or higher glycol (C) is too small, and the unpleasant hand feeling is a problem. Become. On the other hand, if the content of the dimer or higher glycol exceeds 0.6% by mass, the dimer or higher glycol (C) excessively bleeds out and the film surface is not null-nulled. The adhesion which is said to be impaired. Therefore, the content of the dimer or higher glycol is 0.05 to 0.6 mass%, preferably 0.1 to 0.4 mass%, more preferably 0.2 to 0.4 mass%. %.

[Other compounds]
The vinylidene chloride-based resin wrap film is a compound other than (A) to (C) used in known food packaging materials (hereinafter referred to as “other compound”), for example, a plasticizer, a stabilizer, and a weather resistance improvement. A coloring agent such as an agent, a dye or a pigment, an antifogging agent, an antibacterial agent, a lubricant, a nucleating agent, an oligomer such as polyester, and a polymer such as MBS (methyl methacrylate-butadiene-styrene copolymer) may be contained.

  The plasticizer is not particularly limited, and specific examples thereof include dimethyl phthalate, diethyl phthalate, dioctyl phthalate, glycerin, glycerin ester, wax, liquid paraffin, and phosphate ester.

  The stabilizer is not particularly limited. Specifically, 2,5-t-butylhydroquinone, 2,6-di-t-butyl-p-cresol, 4,4′-thiobis- (6-t- Butylphenol), 2,2′-methylene-bis- (4-methyl-6-tert-butylphenol), octadecyl-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) bropionate, and Antioxidants such as 4,4′-thiobis- (6-t-butylphenol); laurate, myristate, palmitate, stearate, isostearate, oleate, ricinoleate, 2- Thermal stabilizers such as ethyl-hexylate, isodecanoate, neodecanoate, and calcium benzoate are included.

  The weather resistance improver is not particularly limited, but specifically, ethylene-2-cyano-3,3′-diphenyl acrylate, 2- (2′-hydroxy-5′-methylphenyl) benzolitriazole, 2 UV rays such as-(2'-hydroxy-3'-t-butyl-5'-methylphenyl) 5-chlorobenzotriazole, 2-hydroxy-4-methoxybenzophenone and 2,2'-dihydroxy-4-methoxybenzophenone An absorbent is mentioned.

  Although it does not specifically limit as colorants, such as dye or a pigment, Specifically, carbon black, a phthalocyanine, a quinacridone, an indoline, an azo pigment, a bengara, etc. are mentioned.

  Although it does not specifically limit as an antifogging agent, Specifically, glycerol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene fatty acid alcohol ether, polyoxyethylene glycerol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, etc. are mentioned.

  Although it does not specifically limit as an antibacterial agent, Specifically, a silver-type inorganic antibacterial agent etc. are mentioned.

  The lubricant is not particularly limited. Specifically, fatty acid hydrocarbon lubricants such as ethylene bissteramide, butyl stearate, polyethylene wax, paraffin wax, carnauba wax, myristyl myristate, stearyl stearate, and higher fatty acid lubricants. , Fatty acid amide lubricants, fatty acid ester lubricants and the like.

  Although it does not specifically limit as a nucleating agent, Specifically, phosphate ester metal salt etc. are mentioned.

  The thickness of the wrap film of this embodiment is not particularly limited, but is generally 5 to 20 μm.

  The content of other blends is preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less, and particularly preferably 0.1% by mass.

  The superiority of the wrap film of the present embodiment is significant in an aspect where the total content of additives is smaller. Therefore, the wrap film of this embodiment preferably has a total content of additives of 10% by mass or less, more preferably 7% by mass or less, and further preferably 5% by mass or less.

[Method for producing vinylidene chloride-based resin wrap film]
Hereinafter, the preferable manufacturing method of the wrap film of this embodiment is demonstrated.
Here, first, vinylidene chloride resin, dibutyl sebacate (A), epoxidized soybean oil (B), dimer or higher glycol (C), and various additives as required, A vinylidene chloride resin composition is produced by uniformly mixing with a ribbon blender or a Henschel mixer and aging for 24 hours. Thereafter, the resin composition is melt-extruded and subjected to inflation stretching to obtain a wrap film. Further, if necessary, the resin composition may be added to a plasticizer, a stabilizer, a weather resistance improver, a coloring agent such as a dye or a pigment, an antifogging agent, an antibacterial agent, a lubricant, and a nucleus. Agents, oligomers such as polyester, polymers such as MBS, and the like can also be added. These may be added at any stage until film formation. The wrap film obtained by the above-mentioned method has a high food safety, is excellent in adhesion, drawability and molding processability, and is improved in the unpleasant feel of the film due to the reduction of additives. Films can be obtained with good reproducibility and at a relatively low cost.

Hereinafter, an example of the inflation film forming method will be described.
Drawing 1 is a schematic diagram of an example of a manufacturing process of a wrap film. First, the molten resin composition is extruded into a tubular shape from the die (2) by the extruder (1) to form a sock (4). The outside of the sock (4) is brought into contact with cold water in the cold water tank (6), and the sock liquid (5) is injected into the inside of the sock (4), so that it is cooled and solidified from the inside and outside. The solidified sock (4) is folded by a first pinch roll (7) to form a parison (8).

  Subsequently, by injecting air into the inside of the parison (8), the parison (8) is opened again and becomes tubular. At this time, the sock liquid (5) applied on the inner surface of the sock (4) exhibits the effect of the parison (8) as an opening agent. The parison (8) is reheated to a temperature suitable for stretching with warm water. The warm water adhering to the outside of the parison (8) is squeezed out by the second pinch roll (9). Air is injected into a tubular parison (8) heated to an appropriate temperature to form bubbles (10), and a stretched film is obtained. Thereafter, the stretched film is folded by the third pinch roll (11) to form a double-ply film (12). The double ply film (12) is wound up by a winding roll (13). Further, the film is slit and peeled off to become a single film. Finally, the film is wound on a paper tube to obtain a paper tube-wrapped wrap film.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited at all by these. Evaluation methods used in Examples and Comparative Examples are as follows.

(Evaluation method)
(1. Adhesiveness)
Assuming distribution of the wrap film after shipment and storage at home, the wrap film immediately after film formation was stored in a thermostatic bath set at 28 ° C. for 1 month, and then the adhesion between the wrap films was evaluated.

The measurement was performed in an atmosphere of 23 ° C. and a relative humidity of 50% RH. First, ^two aluminum jigs having a bottom area of 25 cm ² , a height of 55 mm, and a weight of 400 g were prepared, and a filter paper having the same area as the bottom area was attached to the bottom surfaces of both jigs. A wrap film was placed on the bottom surface of both jigs on which the filter paper was affixed so as to prevent wrinkles, and was fixed with rubber bands. The bottom surfaces of the two jigs covered with the wrap film were overlapped and pressure-bonded for 1 minute at a weight of 500 g. Next, the work required for peeling both wrap film surfaces perpendicularly to each other at a speed of 5 mm / min with a tensile and compression tester (manufactured by Shimadzu Corporation; Autograph (AG-IS)) (unit) mJ / 25 cm ² ) was measured.

The adhesion of the wrap film was evaluated based on the measured numerical values in the following four stages.
Evaluation symbol Adherence work (mJ / 25cm ² ) Judgment
× 3.2 or higher Adhesiveness is too high and handling is extremely inferior
△ 2.5 or more and less than 3.2 Adhesiveness is too high and handling is inferior
◎ 2.0 or more and less than 2.5
At the level
○ 1.2 or more and less than 2.0 Adhesiveness and practical level
△ 0.8 or more and less than 1.2 Slight adhesion, but practically problematic
× Less than 0.8 Adhesiveness is too small for practical use

(2. Pullability)
As with adhesiveness, assuming the distribution after shipment and storage at home, the wound wrap film immediately after film formation is stored for 1 month in a thermostat set at 28 ° C. The drawability was evaluated.

  The measurement was performed in an atmosphere of 23 ° C. and a relative humidity of 50% RH. A plastic free roll comprising a drive unit 14 having a length of about 310 mm and a diameter matched to the inner diameter of the paper tube 16 of the wound wrap film 20 and a fulcrum shaft 15 having a length of 330 mm is placed in the center in the width direction of the wound wrap film 20. And the free roll drive unit 14 were mounted in the paper tube 16 of the wound wrap film 20 so that the center in the length direction matched. The width of the wrap film 20 wound in the vertical direction at the center of the hanger 17 is parallel to the hanger 17 and the fulcrum shaft 15 suspended on the load cell side of the tensile compression tester (manufactured by Shimadzu Corporation; Autograph (AG-IS)) A fulcrum shaft 15 of a free roll integrated with the wound wrap film 20 was placed in a bearing 19 installed in the lower part 18 of the tester so that the center in the direction was positioned and fixed. Furthermore, the wound wrap film 20 integrated with the free roll was peeled off and fixed to the hanger 17 that was suspended on the load cell side at the top of the testing machine with double-sided tape so that there were no wrinkles.

  Next, the wound wrap film 20 was peeled off from the paper tube 16 at a speed of 1000 mm / min with a tensile / compression tester. At this time, the average value of the force required to peel off the wound wrap film from the paper tube was taken as the measured value of drawability (unit: cN / 30 cm width).

The drawability of the wound wrap film was evaluated based on the measured values in the following four stages.
Evaluation symbol Pull-out power (cN / 30 cm) Judgment × Less than 10 Pull-out property is too light and impractical ◎ 10 to less than 70 Very good pull-out property, excellent level
○ 70 or more and less than 80 Good drawability and practical level △ 80 and less than 100 Inferior drawability and practical problems × 100 or more Very poor drawability and impractical use is there)

(3. Feeling of touch)
As well as adhesion, assuming the distribution after shipment and storage at home, the wrap film immediately after film formation is stored in a thermostatic bath set at 28 ° C. for one month, and then the touch feeling of the wrap film is evaluated. did.

The evaluation method was performed by 25 panelists who performed sensory evaluation on the flexibility (hand feeling) of the lap and used the total of the following scores (100 points maximum).
Evaluation symbol Rating (score) Judgment ◎ 71 or more There is moderate suppleness and is at a very excellent level
○ 57 or more and less than 71 There is suppleness and is at an excellent level
△ 43 or more and less than 57 It is not supple and has a slightly unpleasant touch × Less than 43 It has no supple and has a very unpleasant touch

(4. Moldability)
Molding processability refers to extrudability in the raw material resin melt extrusion process. Molding processability was evaluated in the following two stages according to the extrusion pressure of the resin in the melt extrusion process.
Evaluation symbol Resin extrusion pressure (MPa) Judgment
◎ 60 to less than 65 Very stable melt extrusion, good quality fill
○ 65 to less than 67 Stable melt extrusion is possible, and there is no problem
Can form a film

[Example 1]
Vinylidene chloride resin having a weight average molecular weight of 90,000 (vinylidene chloride component is 90% by mass, vinyl chloride component is 10% by mass), DBS (dibutyl sebacate, Taoka Chemical Co., Ltd.), ESO (Newsizer 510R, Japan) Oil and fat) and TPG (tripropylene glycol, Asahi Glass Co., Ltd.) mixed at a rate of 95.2% by mass, 3.2% by mass, 1.3% by mass and 0.3% by mass, respectively. 5 kg was mixed with a Henschel mixer for 5 minutes and aged for 24 hours or more to obtain a vinylidene chloride resin composition.

  The above-mentioned vinylidene chloride resin composition is supplied to a melt extruder and melted, and the heating conditions of the extruder are such that the molten resin temperature at the slit exit of the annular die attached to the tip of the extruder is 170 ° C Was adjusted in an annular shape at an extrusion rate of 10 kg / hr. After this was supercooled, it was stretched by inflation to obtain a cylindrical film. The tubular film was nipped and folded flat, and a double-layered film having a folding width of 280 mm and a thickness of 10 μm was wound at a winding speed of 18 m / min. The film was slit to a width of 220 mm and peeled so as to form a single film. Evaluation was made on the adhesion, drawability, and feel of the wrap film. The results are shown in Table 1.

[Example 2]
Except that the content of TPG was changed to 0.06% by mass and the vinylidene chloride resin was changed to 95.44% by mass, the same treatment as in Example 1 was performed, and the wound wrap film of Example 2 was Obtained. The evaluation results are shown in Table 1.

[Example 3]
Except that the content of TPG was changed to 0.5% by mass and the vinylidene chloride resin was changed to 95.0% by mass, the same treatment as in Example 1 was performed, and the wound wrap film of Example 3 was Obtained. The evaluation results are shown in Table 1.

[Example 4]
A wound wrap film of Example 4 was obtained in the same manner as in Example 1 except that 0.3% by mass of polypropylene glycol (P425, Dow Chemical Company) was used instead of TPG. The evaluation results are shown in Table 1.

[Comparative Example 1]
The wound wrap film of Comparative Example 1 was treated in the same manner as in Example 1 except that the TPG content was changed to 0.8% by mass and the vinylidene chloride resin was changed to 94.7% by mass. Obtained. The evaluation results are shown in Table 1.

[Comparative Example 2]
A wound wrap film of Comparative Example 2 was obtained in the same manner as in Example 1 except that the addition of TPG was omitted and the vinylidene chloride resin was changed to 95.5% by mass. The evaluation results are shown in Table 1.

[Comparative Example 3]
The wound wrap film of Comparative Example 3 was treated in the same manner as in Example 1 except that the TPG content was changed to 0.04% by mass and the vinylidene chloride resin was changed to 95.46% by mass. Obtained. The evaluation results are shown in Table 1.

[Comparative Example 4]
Comparative Example 4 was carried out in the same manner as in Example 1 except that the addition of TPG was omitted, the DBS content was changed to 4.0% by mass, and the vinylidene chloride resin was changed to 94.7% by mass. A wound wrap film was obtained. The evaluation results are shown in Table 1.

[Comparative Example 5]
The wound wrap film of Comparative Example 5 was treated in the same manner as in Example 1 except that 0.3% by mass of triacetin (TA, Triacetin DRA-150, Daicel Chemical Industries, Ltd.) was used instead of TPG. Obtained. The evaluation results are shown in Table 1.

[Comparative Example 6]
The wound wrap film of Comparative Example 6 was treated in the same manner as in Example 1 except that 0.3% by mass of soybean oil (soybean white oil, Nissin Oilio Group Co., Ltd.) was used instead of TPG. Got. The evaluation results are shown in Table 1.

[Comparative Example 7]
A wound wrap film of Comparative Example 7 was obtained in the same manner as in Example 1 except that 0.3% by mass of propylene glycol (PG, Asahi Glass Co., Ltd.) was used instead of TPG. The evaluation results are shown in Table 1.

  The wrap film of the present invention has a relatively low total content of additives, which further improves food safety, and is excellent in adhesion, drawability, moldability, and reduction of additives. Since the unpleasant film feel that sometimes occurs is also improved, it can be widely and effectively used for food packaging and cooking.

1 Extruder 2 Die 3 Die Mouth 4 Tubular Vinylidene Chloride Copolymer Composition (Sock)
5 Sock liquid 6 Cold water tank 7 1st pinch roll 8 Parison 9 2nd pinch roll 10 Bubble 11 3rd pinch roll 12 Double ply film 13 Take-up roll 14 Drive part 15 Support shaft 16 Paper tube 17 Hanger 18 Lower part 19 Tester bearing 20 roll wrap film

Claims (3)

Containing vinylidene chloride resin, dibutyl sebacate (A), epoxidized soybean oil (B), and dimer or higher glycol (C),
The content of (A) is 1 to 10% by mass, the content of (B) is 1 to 10% by mass, and the content of (C) is 0.05 to 0.6% by mass. Is,
Vinylidene chloride resin wrap film.   The vinylidene chloride resin wrap film according to claim 1, wherein the content of the vinylidene chloride resin is 90% by mass or more.   The vinylidene chloride-based resin wrap film according to claim 1 or 2, wherein the dimer or higher glycol (C) is tripropylene glycol.