JP5889169B2 - Bottled mayonnaise-like food - Google Patents

Description

The present invention relates to a mayonnaise-like food containing blow-molded bottles that has been reduced in weight, and more particularly, to a mayonnaise-like food using bottles that have an oxygen barrier property and that are moderately rigid and have excellent handling properties.

Blow-molded bottles are widely used because they contain contents with viscosity such as mayonnaise, ketchup, and the like, and can be used by squeezing the necessary amount of the bottle by pushing the body of the bottle with your fingers. As a result, many waste bottles are used after the contents are used. Accordingly, there is a need for bottled mayonnaise-like foods and the like that are excellent in handleability with the aim of reducing the weight of the bottle in terms of both resource saving and waste reduction. As these bottles, those made of various polyethylenes are widely used. Japanese Patent Application Laid-Open No. 2002-173123 and Japanese Patent Application Laid-Open No. 2004-2003 disclose techniques for increasing the strength by blending linear low-density polyethylene as a countermeasure against a drop in drop strength and digging strength caused by reducing the amount of polyethylene used. 136900.
JP 2002-173123 A JP 2004-136900 A

In order to reduce the cost and waste amount of resin required for the manufacture of bottles, there is a strong demand for lighter bottles even in blow molded bottles. However, when the bottle is lightened, there is a problem that the drop strength in the state of filling the contents decreases, the rigidity of the bottle is lost, and the workability during filling of the contents and handling of the bottle during distribution becomes difficult. May occur.
Furthermore, when the weight is reduced, the performance of the oxygen barrier layer for partially preventing the ingress of oxygen through the vessel wall will appear, resulting in the problem of the quality of the contents being reduced, and the realization of the weight reduction of the bottle itself It is difficult to solve both at the same time.
Therefore, the object of the present invention is to satisfy both the usability and the quality maintenance of the contents even if the amount of resin in the bottle is reduced, and the weight reduction has contributed to resource saving and environmental measures. It is to provide bottled mayonnaise-like food.

In the mayonnaise-like food in a bottle of a light-weight blow molded multilayer resin bottle, the bottle can prevent deterioration over time due to oxidation of the content of the mayonnaise-like food and can maintain a good flavor. In order to develop a mayonnaise-like food containing the ingredients, we conducted intensive studies to improve the thickness distribution of blow molded multilayer resin bottles used in mayonnaise-like foods. And, by using light weight polyethylene with different density in polyethylene bottles for mayonnaise-like foods and molding them so that the thickness is uniform, it is possible to simultaneously realize light weight of the bottle and pinhole resistance due to strength and bending. . In addition, even if the weight is reduced, especially at the shoulder of the bottle, the torque strength and oxygen barrier properties maintain the functions prior to weight reduction, satisfying both ease of use and sufficient quality maintenance to ensure sufficient buckling strength. I found out. As will be described later, the ratio of the thickness of the thin part of the body of the lightweight bottle and the thick part of the shoulder improves the bottle performance, and both the period during which the flavor of the mayonnaise-like food in the contents is well maintained The present invention has been completed by finding that it is improved.

That is, the present invention relates to a mayonnaise-like food with a multi-layered resin bottle, which is blown with a polyethylene resin and a gas barrier resin. The bottle with the cap is erected, the bottom grounding surface is set to 0, The lower end is equally divided into eighteen parts, X is the waist circumference at the height of 4 upward from the bottom, A is the wall thickness of the bottle at that position, and Y is the circumference at the height of 14 , When the thickness of the bottle at that position is B, when the ratio of X and Y is 0.5 to 0.9, it is a mayonnaise-like food in a bottle in which the ratio of A and B is 1.4 or less. In addition, the ratio of A and B should be 1.3 or less as described above. Moreover, when the ratio of X and Y is 0.6-0.8, it can be set as the mayonnaise-like food with a bottle reduced in weight by making the ratio of A and B 1.3 or less.
Moreover, it is a mayonnaise-like food in a multilayer resin bottle having an inner volume of 200 g to 500 g, which is blown out of polyethylene resin, gas barrier resin and polyethylene resin, and the amount of resin in the bottle is mayonnaise in the bottle It may be a mayonnaise-like food in a bottle of 4.0 g or less per 100 g of the like-like food. Moreover, the gas barrier resin of the multilayer resin bottle is made of an ethylene-vinyl alcohol copolymer, and the bottled mayonnaise-like food can be achieved by sealing the opening of the bottle.

The bottled mayonnaise-like food of the present invention contributes to resource saving and environmental measures accompanying the weight reduction of the bottle while maintaining the functions and ease of use required for the bottle, and further expansion of the mayonnaise-like food filled with these It can lead to economic revitalization.

Examples of the mayonnaise-like food in the present invention include mayonnaise and salad dressing. In Japan Agricultural Standards (JAS), a dressing having a viscosity of 30 Pa · s or more is called a semi-solid dressing. Among them, mayonnaise is a material that uses egg yolk. The mayonnaise-like food according to the present invention also includes a product group and an emulsifying type seasoning similar to mayonnaise that have similar properties but do not conform to the JAS standard.

The bottle of mayonnaise-like food in a bottle according to the present invention is a multilayer having an oxygen barrier property in an intermediate layer based on a polyethylene resin that can extrude a desired amount of mayonnaise-like food by grasping and pushing the torso with fingers. It is a resin bottle. In order to bond the barrier resin layer and the inner and outer layers, means for interposing an adhesive layer between these layers may be employed. The bottle can be molded by a known molding method of blow molding in which air is blown in a state where a mold is placed on the outside using a parison in which polyethylene and an ethylene-vinyl alcohol copolymer are laminated. Blow molding includes rotary blow molding in which a large number of dies are continuously rotated while being rotated, and so-called blow molding in which a parison is melt-extruded and blown into a mold to blow the gas into the interior. The bottle is filled with mayonnaise-like food, and when used, the bottle body is pushed out with your fingers to remove the required amount, so the bottle body is thick, but the cap from the center of the bottle A so-called bottled mayonnaise bottle with a gentle shape that can be handled without pressing the body part is formed in the bottle mouth part to which the bottle is attached.

In the present invention, a bottle with a cap attached to a mayonnaise bottle is used as an index representing the shape of the shoulder, that is, the thick diameter of the trunk and the narrow diameter of the shoulder, the bottom grounding surface is set to 0, and the height of the lower end of the cap is increased. The height of the body part was divided into four parts, with the height being 18 from the bottom, and the shoulder circumference at the height of 4 from the bottom as X, and the shoulder circumference at the height of 14 as Y. In general, the position of Y is the position of the shoulder that is gripped when the bottle is moved, and the position of X is the position of the body that is pressed when the mayonnaise of the contents is pushed out. Further, the positions of X and Y represent the thickness of the bottle in the present invention, and the perimeter represents the degree of constriction of the shoulder of Y with respect to the body of X. In addition, the thickness A and the thickness B can be defined as an average of values obtained by measuring corresponding positions by the thicknesses of the bottles at the X and Y positions. For example, when four points of the long side and the short side are used as measurement points, the values of the four points measured at the same positions of X and Y are averaged. In the present invention, the ratio of X and Y is represented by Y of X, and similarly, the ratio of A and B represents B of A.

The polyethylene resin composition particularly preferably used for the bottle in the present invention is a mixture of low-density polyethylene and high-density polyethylene for the purpose of optimizing the practical strength of the molded bottle, that is, the drop strength of the bottle and the burst strength of the bottle. It can also be used. Further, special polyethylene resins such as linear low density polyethylene, medium density polyethylene, ultra high molecular weight polyethylene, and metallocene polyethylene may be mixed. Also, as a bottle, it is based on resins classified as low-density polyethylene that exhibits flexibility in addition to extrudability and drop strength, and among them, density is an example that shows higher physical properties than ordinary low-density polyethylene. Of 924 to 925 kg / m3 (JISK7112).
As the resin constituting the oxygen barrier resin layer, in a multilayer resin bottle of mayonnaise-like food, a multilayer resin bottle having a three-layer structure having an oxygen barrier layer between polyethylene resin layers is generally used. In general, a mixed resin layer containing an ethylene-vinyl alcohol copolymer is used as the oxygen barrier resin layer. From the viewpoint of oxygen barrier properties, those having a high vinyl alcohol residue ratio are preferred. However, when the residue ratio is too high, the melting point is high and the affinity with polyethylene is low, so the vinyl alcohol residue ratio is 55%. From 75% is preferred.
When reducing the weight of the resin in the bottle to reduce the weight of the bottle and reducing the thickness, as described above, select the polyethylene resin for the purpose of making the bottle rigid and drop strength appropriate. Can be used.

The present invention will be described based on the embodiment. FIG. 1 is a side explanatory view showing an example of a bottled mayonnaise-like food of the present invention, and FIG. 2 is a cross-sectional explanatory view of FIG. FIG. 3 is an explanatory side view for equally dividing the height of the bottled mayonnaise-like food of the present invention upward from the bottom, and FIG. 4 is a cross-sectional explanatory view showing the thickness measurement portion of FIG. FIG. 5 is a side explanatory view showing another example of the bottled mayonnaise-like food of the present invention, and FIG. 6 is a cross-sectional explanatory view of FIG.
Using a rotary blow molding machine, bottle 1 of mayonnaise-like food in a bottle is placed upright, the bottom grounding surface is set to 0, the height of the bottom end of the cap is set to 18, and the bottle 1 The thickness of the bottle with the height of 4 in the upward direction is A, the thickness of the bottle at the height of 14 is B, and the ratio of the thickness of A and B is changed together with the bottle weight, ie, A mayonnaise bottle (substantially shaped as shown in FIG. 1) was manufactured, and measurement and evaluation described later were performed.

２５０ｇ及び４００ｇ容量のマヨネーズボトルをそれぞれの金型でブロー成型方法に基づいて、前述の2種類のポリエチレン材料を用いて基礎とした目付量から５％の重量減をさせ各ボトルを製した。次いで、ボトルの重量は変えずにパリソンの押出しパターンを変化させ、胴部３の肉厚と肩部４の肉厚の比率を変更させたボトルを製した。更に胴部と肩部の肉厚の比率を変化させたボトルを材料、重量と変化させたボトルを製した。（表２参照）そしてそのボトルの座屈強度、落下強度、折曲げ強度、絞りやすさを比較した。 The layer structure of the bottle was outer polyethylene layer / adhesive layer / EVOH / adhesive layer / inner polyethylene layer.
Table 1 shows the main physical property data of the polyethylene material used in the examples.

Based on the blow molding method of 250 g and 400 g capacity mayonnaise bottles, each bottle was made using the above-mentioned two types of polyethylene materials and reduced in weight by 5% from the basis weight. Next, a bottle in which the parison extrusion pattern was changed without changing the weight of the bottle to change the ratio of the thickness of the body 3 to the thickness of the shoulder 4 was produced. Furthermore, the bottle which changed the ratio of the thickness of a trunk | drum and a shoulder part made the bottle which changed the material and the weight. (See Table 2) And the buckling strength, drop strength, bending strength and ease of drawing of the bottles were compared.

As shown in Table 2, a bottle in which the basis weight of the bottle was reduced by 5%, 10%, and 15% by weight without changing the polyethylene and without changing the thickness pattern was used as a comparative example. Moreover, the bottle which made the bottle which reduced the weight 5% from the control the comparative bottle 1 or 4 and the bottle which reduced the 10% compared with the comparative example 2 or 5 and 15% by making the base bottle into the control 1 or 2. It was set as Comparative Example 3 or 6.

実施例は比率、材質、重量を変更したボトルを製造して下記表３、および表４に示したように評価した。
評価：
○：基礎にしたボトル（便宜上対照とする）と同等
◎：対照より優れる
△：対照よりもやや劣る
×：対照より劣る
評価は基礎としたボトル（対照１および対照２）と同等とした評価を○、対照よりもやや劣る評価を△、対照よりも劣る評価を×、対照より優れた評価を◎として評価した。なお、評価方法は次の方法に従って行った。なお、ボトルの重量は設定重量とした。

In Examples, bottles with different ratios, materials, and weights were produced and evaluated as shown in Tables 3 and 4 below.
Rating:
○: Equivalent to the base bottle (for convenience, as a control) ◎: Superior to the control Δ: Slightly inferior to the control ×: Evaluation inferior to the control is equivalent to the base bottle (Control 1 and Control 2) ○, evaluation slightly inferior to the control was evaluated as Δ, evaluation inferior to the control was evaluated as ×, and evaluation superior to the control was evaluated as ◎. The evaluation method was performed according to the following method. The weight of the bottle was a set weight.

Evaluation method (measurement method)
(1) Using a Tensilon universal testing machine (Orientec Co., Ltd. RTC-1250A), buckling strength is generated by buckling (pressing the top of the bottle to cause dents on the side wall of the bottle). It was confirmed visually.
(2) In the drop strength test, a bottle filled with water equivalent to the internal volume in the bottle cavity is addressed once each in the vertical and horizontal directions from a height of 1.5 m to a sturdy surface at a temperature of 20 ° C. The bottle was dropped, and the bottle cracked, spread, and other bottle defects were visually observed.
(3) The bending strength was determined by using an gelless flex tester, bending the empty bottle 2000 times at 25 ° C. and 100 times at 5 ° C., and checking for the presence of pinholes by an ageless seal check.
(3-2) The operation until the empty bottle was manually folded back at 5 ° C. was repeated once, capped every 50 times, and the presence or absence of pinholes in water was examined.
(4) Ease of squeezing was confirmed using a Tensilon universal testing machine (RTC-1250A manufactured by Orientec Co., Ltd.) to check the load applied when the body of a bottle filled with mayonnaise was pressed.
(4-2) Tensilon universal testing machine (RTC-1250A manufactured by Orientec Co., Ltd.) was used to confirm the load applied when the bottom of the empty bottle was pressed from the folded state.

To compare combinations of examples with different thickness distribution patterns, examples with reduced weight, and examples with modified polyethylene materials

Superior to control: Equivalent to 5-point bottle (control): 4 points
Slightly inferior to control: 2 points Inferior to control: Ratings were counted as 1 point.

The results are shown in Tables 5 and 6.

From this example, it can be understood that the usability is improved and the thickness of the bottle is suitable, that is, the weight can be reduced by the ratio of B / A. In addition, it can be understood that the weight of the bottle can be reduced by employing polyethylene for weight reduction and optimizing the ratio of the thickness B / A.

[Test example]
As shown in FIG. 3, the bottle is erected, the bottom grounding is set to 0, the height of the lower end of the cap is set to 18 and marked with 18 markers in the circumferential direction, and each circumferential direction 4 shown in FIG. Tables 7 to 9 show examples in which the film pressure (thickness) at each location was measured with a magna microphone. As for the thickness of these measurement locations, the average thickness in each circumferential direction was taken as the thickness of each circumference.

In addition, the basis weight of the bottle used for the mayonnaise-like food in the bottle is preferably 4.0 g or less per 100 g of mayonnaise food in the bottle, more preferably 3.7 g or less per 100 g. The lower limit is not particularly defined, but can be determined by suitably selecting the polyethylene material used for the layer structure as described above. The oxygen barrier resin preferably has a high vinyl alcohol residue ratio in terms of oxygen barrier properties, but if the residue ratio is too high, the melting point is high and the affinity for polyethylene is poor. An alcohol residue ratio of 55% to 75% can be preferably used. These can be determined in terms of usability, resin cost, and resource saving.

Side explanatory view showing an example of a bottled mayonnaise-like food of the present invention The bottom part of FIG. 1 is divided into 0 and the lower end part of the cap as 18 parts, and a sectional explanatory view of the heights 4 and 14 upward from the bottom part. Side explanatory drawing which equally divides the height of the bottled mayonnaise-like food of the present invention upward from the bottom Sectional explanatory drawing which shows the thickness measurement location of the height of 4 and 14 upward from the bottom part of FIG. Side explanatory view showing another example of bottled mayonnaise-like food of the present invention 5 is divided into equal parts, with the bottom part being 0 and the lower end part of the cap being 18, and a cross-sectional explanatory view of the heights 4 and 14 upward from the bottom part.

1 Bottle 2 Cap 3 Body 4 Shoulder

Claims (1)

The inner volume of the substantially bottle- shaped blow bottle composed of a multilayer of polyethylene resin, gas barrier resin and polyethylene resin is 200 to 500 g,
When using it, it is a mayonnaise-like food in a multilayer resin bottle that can be used by pressing the barrel of the bottle with your fingers and squeezing it, and the inner and outer layers are polyethylene layers,
The polyethylene resin is a low density polyethylene having a density of 924 to 925 kg / m ³ and an MFR of 0.5 g / 10 min.
A bottled mayonnaise-like food characterized in that the amount of resin in the bottle is 3.4 to 3.7 g per 100 g of mayonnaise-like food in the bottle.

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