JPH0343371A - Wrapping of sheet food - Google Patents

Abstract

PURPOSE:To permit distribution at normal temperature and an easy and sanitary taking-out of the sheet food being the content without impairment by a method wherein a film-shaped flexible wrapping material having the sealant layer consisting of polypropylene on one side is used to form a seal wrapping with the polypropylene layer inside. CONSTITUTION:A sheet 1 consisting of an outer polyester layer and an inner polypropylene layer is used to wrap edibles in contact with the polypropylene layer, sealed by a submerged three-sided sealing machine and cut into the individual wrapping bag of a predetermined length. By this submerged sealing machine, this sheet is first formed into a continuous cylindrical configuration in the sheet feeding direction by heat sealing the overlapping inner polypropylene edges to form a heat seal side 3, after which the food is pumped continuously into this cylindrical wrapping in a predetermined amount and the polypropylene faces are heat sealed together at predetermined intervals and perpendicularly to the sheet feeding direction to form heat seal sides 2. Since the heat sealed parts of the polypropylene layer are easy to separate, the sealed parts can be unsealed readily by pulling tabs 3 and 3' with the fingers.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for packaging sheet foods, which includes:
For details, it is possible to distribute sheet foods at room temperature,
The present invention also relates to a packaging method that allows for easy opening and removal of the contents.

(Prior art) The present inventors previously developed a method for manufacturing sheet foods in Japanese Patent Application Laid-open No. 6
No. 3-12255 ``Jelly molding method'' was proposed.

This technique is a jelly molding method characterized by molding pectin jelly dough into a sheet using opposed rolls, one of which is fixed and the other rotating, or a single roll equipped with a scraper.

Furthermore, he proposed Japanese Patent Application No. 62-333848 titled ``Method for forming and packaging sheet-shaped jelly sweets.''

This technology involves feeding a film-like flexible packaging material toward the upper surface of a pair of forming rolls arranged side by side at a regular interval, and from both left and right directions, and passing through the gap between the forming rolls. On the other hand, the jelly confectionery dough is fed into a hopper placed on the pair of forming rolls, so that the jelly confectionery dough is sandwiched between the two flexible packaging materials and rolled by the pair of forming rolls to form a sheet. This is a method for forming and packaging a sheet-shaped jelly confectionery characterized by the following:

Sheet foods have been developed in a wide range of fields, including vegetables, fish meat dumplings, salmon, cod roe, beef, fruit juices, sauces, spreads, tuna, and corned beef. The prior art suggests that foods with a high moisture content, that is, foods with a water activity AV of 0.70 or higher, are packaged aseptically or hot-packed to form sheet foods that can be stored for a long period of time.

(Problems to be Solved by the Invention) However, when attempting to take out the contents from this aseptically packaged or hot-packed product, the package cannot be opened unless the method shown in Figs. It was extremely difficult to handle, causing damage or getting the hands dirty when taking it out, which significantly diminished the convenience of sheet foods.

That is, according to the opening method shown in FIGS. 2 and 3, the product is torn from the notch in the direction of the arrow, and in the case of the product shown in FIG. 4, it is cut in the direction of the arrow using scissors.

Furthermore, commercially available sliced cheese is obtained by continuously filling a packaging material while hot-backing it, adjusting the thickness, and then cutting it into pieces at regular intervals.

Although this packaging method does not destroy the contents or soil the hands when taking out the contents, since the contents are not isolated from the outside, contamination by microorganisms is inevitable.

The present invention has been made in view of the above problems, and provides a packaging method for sheet foods that can be distributed at room temperature and that can be easily and hygienically removed without destroying the contents of the sheet foods. It provides:

(Means and effects for distantly resolving the problem) The present inventors have
As a result of intensive studies to solve the above issues, we found that while polyester sheets are conventionally used as packaging materials for aseptic packaging and hot packs, polypropylene was coated or pasted on one side of this packaging material. If this is done, even after the polyester sheet is sealed through this polypropylene layer and the food is sealed, this seal can be easily peeled off, so even if the sheet food is individually packaged and can be distributed at room temperature, the contents can be easily removed. We learned that it is possible to easily remove food items without damaging them.

The present invention is based on these findings, and is a method for packaging sheet foods, using a film-like flexible packaging material having a sealant layer made of polypropylene on one side.
It is characterized by seal packaging with the polypropylene layer on the inside.

According to the packaging method of the present invention, since the products are packaged individually, they have excellent isolation from the outside, and the original hot bag method can be applied as is. Furthermore, even foods that cannot be hot-packed can be sterilized with hot water after being packaged individually, and there are no hygienic problems.

Examples and comparative examples will be described below.

(Examples, etc.) Example 1 20 parts by weight of sugar, 1 part by weight of pectin, and 0.2 parts by weight of sodium citrate were mixed in powder form, 30 parts by weight of water was added, and the mixture was boiled at 100°C for 5 minutes. Pectin was completely dissolved. To this was added 78 parts by weight of strawberry paste containing 40% by weight of fresh strawberry pulp with a solid content of 60% by weight, and the mixture was heated and mixed again to adjust to Bx70. Quickly add 0.7 parts by weight of citric acid and 0.1 parts by weight of fragrance, and while keeping the temperature above 80°C, use a sheet of outer polyester/inner polypropylene layer as a packaging material, so that the polypropylene layer becomes the above-mentioned edible material. Filling and sealing were carried out using a new submerged sealing machine manufactured by Komatsu (type KL-313, 3L) capable of a horizontal three-sided type submerged seal so that they were in contact with each other, and the pieces were cut into a length of 100 a+m.

This submerged sealing machine first heat-seals the inner polypropylene surfaces to each other in the flow direction of the packaging material to form a continuous cylindrical shape, and then continuously and quantitatively seals the food, etc. with a pump. It has a mechanism that heat-seals the polypropylene surfaces to each other at a fixed interval and perpendicular to the flow direction using two opposing rolls while feeding and squeezing the contents from the left and right sides of the packaging material. It also has a mechanism for cutting to length.

A sheet-wrapped jam was produced by placing the above-mentioned cut and packaged product on a flat plate, pressing it with a pressure of 5 g/ad (abs), and leaving it for 30 minutes until the pectin solidified.

The sheet food (jam) thus obtained is shown in FIG. In this Figure 1, 1 is the outer polyester/inner polypropylene packaging bag, 2 indicates the heat-sealed area, and 3 and 3' are left unheat-sealed to facilitate opening. Each ear piece to be tightened is shown.

Since the polypropylene layers can be easily peeled off from each other even when heat-sealed, in the above-mentioned sheet food, the edges 3, 3
If you put your fingertips on ' and pull it, the sealed part will peel off easily, so you can remove the contents (jam) without getting your hands dirty.

Although this is not a problem when the contents are liquids such as jam, this requirement also applies to foods that are solid or semi-solid and must be taken out while maintaining their packaged form. It becomes possible to satisfy.

Comparative Example 1 Jam was manufactured using the same formulation and same operation as in Example 1, and then it was made using the above-mentioned submerged sealing machine manufactured by Komatsu Seisakusho, which is a horizontal three-sided seal type, using the usual packaging material for submerged sealing, polyester/polyethylene film. Fill while sealing.
It was cut at a length of 100m.

This was pressed in the same manner as in Example 1 and left until the pectin solidified to produce a sheet-like jam.

This sheet-shaped jam packaging product is similar to the products shown in Figures 2 to 4, and can be opened by tearing it from the notch as shown in Figures 2 and 3, or by using scissors as shown in Figure 4. It is used to open the package. When opening the package using the notch, it is easy to get the hands dirty, and when opening the package using scissors, it is inconvenient in that the scissors are used as the opening tool.

Example 2 15 parts by weight of gelatin was swollen in advance with 30 parts by weight of water, and then placed in a thermostat at 60°C to completely dissolve the gelatin. Add 45 parts by weight of this gelatin liquid to 55 parts by weight of spinach powder, mix, and add hot water to B.
Adjust to x60.

This was filled with a packaging material consisting of polyester/polypropylene while performing horizontal three-sided submerged sealing using a new submerged sealing machine manufactured by Komatsu Seisakusho, and cut into lengths of 100 mm. Immediately after cutting, the pieces were placed in a water bath at 83°C and kept there for 15 minutes.

This was pressed in the same manner as in Example 1 and left until the gelatin solidified to produce a sheet-like jelly food. When this sheet-like jelly food package is opened in the manner shown in FIG. 1, it can be easily and quickly taken out without losing its shape.

Comparative Example 2 After preparing a spinach-containing jelly dough using the same formulation and the same operation as in Example 2, a horizontal three-sided seal type submerged seal was prepared using a normal packaging material for submerged seals (its composition is polyester/polyethylene film). while filling,
It was cut to a length of 100+a.

A sheet-like jelly food was produced by pressing this from above and below with flat plates and leaving it to stand until the gelatin solidified.

When this package was opened by the method shown in FIGS. 2 and 3, the jelly food not only lost its shape but was also extremely difficult to take out. Further, when opening the package using the method shown in FIG. 4, not only scissors or a knife are required, but also it is troublesome to take out the package.

(Effects of the Invention) According to the present invention, by using a packaging material for packaging sheet foods with a sealant made of polypropylene applied or pasted on the inside, sheet foods can be distributed at room temperature without being contaminated by microorganisms. The sheet food can be packaged in a sealed manner, and the sheet food can be taken out easily and quickly without causing the food to lose its shape due to the contents.Furthermore, the food does not come into contact with the food when opening the package. It is also favorable from a hygiene perspective.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the packaged sheet food product obtained by the present invention and its opening means;
FIG. 4 is a plan view showing a sheet food packaged product using a conventional hot bag or the like and its unsealed part. 1... Sheet food packaging bag, 2... Heat-sealed area, 3.3'... Opening tab. Patent applicant Meiji Seika Co., Ltd. Figure 3 Figure 4

Claims (2)

[Claims] (1) A method for packaging sheet foods, which comprises using a film-like flexible packaging material having a sealant layer made of polypropylene and sealing the food so that the polypropylene layer is on the inside. (2) The method for packaging a sheet food according to claim (1), wherein the sealing is performed by heat sealing.