KR20170010165A - A selectively silicone-coated roll film for preparing retort pouches and a preparation method of retort pouches using the same - Google Patents

Abstract

The present invention relates to a roll film for manufacturing a retort pouch, which comprises a silicone layer selectively coated on a portion except for the heat-adhesive region on one side of the film. The present invention relates to a manufacturing method of a retort pouch, which comprises a heat adhesion step with a fixed temperature and pressure by overlapping the same. In addition, the present invention relates to a pouch for retort with the improved discharge of contents, which comprises a silicone layer coated on the most inner side of the pouch in contact with the contents, as a pouch for retort provided with a space for storing the contents.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roll film for manufacturing a retort pouch selectively coated with silicone and a retort pouch using the same,

The present invention relates to a retort pouch production roll film comprising a silicon layer selectively coated on one side of a film except for a heat adhesion site, and thermally adhering the roll film to a retort pouch at a predetermined temperature and pressure And a silicon containing layer coated on the innermost side of the pouch in contact with the contents as a retort pouch having a contents receiving space.

Although the demand for retort food is increasing in proportion to the westernization of diet and the increase of double income and the increase of the elderly generation and single household households, the processed food which is packaged in containers requires a series of processing, There is still a problem in terms of heat resistance, transparency, impact resistance, and dimensional stability of the container due to the high temperature treatment in the retort process.

The retort food is prepared by filling and sealing a pre-manufactured food in a heat-resistant container and sterilizing it by heating at 100 to 150 ° C for 15 to 30 minutes to allow long-term preservation. to be. Methods of heating the retort food include pouch packaging or containers in hot water, and cooking in a microwave oven or in a microwave oven. Considering that the container containing the food is heated and sterilized or sterilized by heating the container containing the food in the manufacturing process and the container is heated to warm the food, the retort pouch for directly packaging the food must have high heat resistance In addition, it should be harmless to human body because of direct contact with food.

Retort pouch is lighter than conventional cans and bottles, and it takes up less space, so it is easy to carry. It can be eaten easily without any additional container, so it is easy to use, easy to open, Since it is sterilized or sterilized by removing air and sealed, it can be preserved for a long time. Since it is usually produced in a flat form, its surface area is wide, and heat is transmitted quickly during heating to shorten sterilization, sterilization or cooking time. The advantage is less loss. However, care must be taken in handling because of the possibility that the package may be damaged by sharp or sharp objects or by external stimuli such as falling.

Such retort pouches are sterilized or sterilized by putting them in a sealed container, and when they are cooked, they are stored in hot water or a microwave oven, so that they are not damaged or deformed during this process, It is manufactured using synthetic resin. At this time, a protective layer for reinforcing the strength outside the inner layer in direct contact with food and imparting impact resistance, a barrier layer for blocking the change of contents by blocking light, oxygen or moisture, It may also contain an outer layer with the properties.

At this time, polypropylene which is a heat-resistant material is mainly used for the inner layer contacting with food. Since polypropylene is a material having a heat-resistant temperature exceeding 100 캜, it does not dissolve when warming a food, and a polymer having a molecular weight of 1,000 or more is usually harmless to the human body because it is not absorbed into the body. Further, the inner layer made from the polypropylene does not contain a plasticizer such as phthalate, bisphenol A, or the like, which is known as a human harmful component.

On the other hand, solid or semi-solid products made of a low-viscosity liquid source material or a dried product or a lump of the contents contained in the retort pouch can be poured simply without the aid of a tool to discharge most of the contents, A large amount of retort food containing carene spoons and spaghetti sauces is attached to the inner polypropylene material. It is difficult to dispense the contents thoroughly by the method of pouring without using the tools, so it is wasted in a considerable amount and is wasted. In case of heating, the contents attached to the inner wall of the upper part excessively absorb electromagnetic waves, and the problem of burning may occur.

Therefore, the present inventors have found that when the contents are adhered to the inner surface of the pouch in the retort pouch and are easily burned when the pouch is warmed up in the battery range, or when the pouch is taken out of the container, the pouch is not completely discharged, As a result of intensive research to devise a pouch inner treatment method, it has been found that the surface of the pouch which is finally in contact with the contents is coated with silicone, and the thermal adhesion is prevented from being impossible under ordinary conditions due to the characteristics of silicon having a high melting point It is possible to produce a retort pouch having improved contents discharge so that most of the contents can be poured without using a tool. The present invention has been completed based on this finding.

It is an object of the present invention to provide a roll film for producing a retort pouch, which comprises a silicon layer selectively coated on one side of the film except for a heat adhesion site.

Another object of the present invention is to provide a method of manufacturing a semiconductor device, comprising: (a) overlapping a roll film including a selectively coated silicon layer on one surface of the present invention, And a step of thermally adhering the superimposed roll film at 200 to 220 캜. The present invention also provides a method for producing a pouch for retort pouch having improved content discharge.

It is still another object of the present invention to provide a retort pouch having a contents receiving space, which comprises a silicon layer coated on the innermost side of a pouch that contacts the contents.

In order to solve the above problems, the first aspect of the present invention provides a roll film for producing a retort pouch, which comprises a silicon layer selectively coated on one side of the film except for a heat bonding site.

For example, since the roll film includes a silicon layer, the roll film can be used to manufacture retort pouches having improved contents ejection as compared with general retort pouches so as to more easily eject the contents carried on the retort pouches manufactured therefrom.

For example, the roll film may be a roll film for producing a general retort pouch. Specifically, it may be, but is not limited to, a roll film for producing retort pouches based on a film comprising polypropylene.

More specifically, the polypropylene may be a block copolymer with ethylene, but is not limited thereto.

More specifically, the film comprising the polypropylene may further comprise, but is not limited to, an ethylene-propylene rubber or an ethylene propylene diene monomer rubber (EPDM rubber).

For example, for mass production and manufacturing convenience, the selectively coated silicon layer may include two or more rows of the same orientation in one or more rows, but is not limited thereto.

In a second aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of: overlapping a roll film including a selectively coated silicon layer on one surface thereof according to the first aspect of the present invention, And thermally adhering the superimposed roll film at a temperature of 200 to 220 캜. The present invention also provides a method of producing a pouch for retort pouch having improved content discharge.

For example, this can be achieved by applying a predetermined pressure until it is compressed to a predetermined thickness at the temperature. The pressure is not limited to a specific value, and the set thickness can be changed within a level capable of maintaining a proper adhesive force in consideration of the thickness of a used film.

The method may further include the step of cutting the thermally adhered roll film at a predetermined interval in a thermal bonding region to produce pouches of individual units. For example, in the case where a plurality of silicon layers for mass production are produced by collectively thermally adhering a patterned roll film, it may further include a step of cutting to provide a single package unit. The cutting step may be carried out at any stage from the step of heat-bonding to the step of producing the finished product in consideration of convenience in the production process. For example, the film can be carried out immediately after the roll film according to the present invention is thermally adhered, after the contents are filled and sealed, or after the contents are filled and sealed and sterilized.

A third aspect of the present invention provides a retort pouch having a contents receiving space, wherein the pouch comprises a silicon layer coated on the innermost side of the pouch in contact with the contents.

The retort pouch can be manufactured by the method according to the second aspect of the present invention described above, but is not limited thereto. Specifically, a roll film including a selectively coated silicon layer on one surface can be manufactured by superimposing the surfaces including the silicon layer facing each other in a pattern matching manner and thermally adhering at 200 to 220 캜, but not limited thereto As long as it can provide a pouch for a retort containing a silicon layer coated on the innermost side of the pouch in contact with the contents of the pouch, .

Specifically, when the retort pouch is discharged without the aid of a tool, the residual amount of the retort pouch can be reduced to 2.5% or less.

For example, when the contents are simply taken out from a retort pouch containing a spaghetti sauce as a content made from a general polypropylene film that does not contain a silicon coating layer on the inside, about 10% of the contents carried is still left in the pouch, The contents of the retort pouch made of a film using a propylene film and further including a silicone layer coated on the inner side in contact with the contents are such that when the same amount is discharged, the remaining amount in the pouch is less than 2.5% Can be significantly reduced.

In addition, the retort pouch may be of a three-pillar type or a standing type, but is not limited to such a shape as long as it can provide a retort pouch including a coated silicon layer in contact with the contents to improve the discharge of the contents.

The present invention relates to a roll film for manufacturing a retort pouch, which comprises a silicon layer coated on the inner surface in contact with the contents of the present invention and is capable of facilitating the discharge of the contents carried from the retort pouch manufactured from the silicone layer, A significantly higher silicon layer is selectively coated on a portion except for the heat adhesion portion so as not to interfere with the heat adhesion, so that it is possible to provide a retort pouch in which the content discharge is improved by applying a predetermined temperature and pressure. The retort pouch thus manufactured can prevent the contents from being wasted due to improved contents discharge, and also prevent the contents on the wall surface from being burned easily when the container is heated in the microwave oven.

1 is a view illustrating the shape of a pouch manufactured according to an embodiment of the present invention.
2 is a view illustrating a form of a roll film for manufacturing a retort pouch according to the present invention.
3 is a diagram showing an example of a standard of a silicone-coated printing plate used in a specific embodiment of the present invention.
4 is a diagram showing an example of an eye mark printing position used in a specific embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are for further illustrating the present invention, and the scope of the present invention is not limited by these examples.

Example : Preparation of retort products packed with polypropylene film for retort, optionally coated with silicone on the contents of the contents

As shown in FIG. 2, a roll film for manufacturing a pouch was prepared by coating a polypropylene film for PET12 / NY15 / RCPP retort only on the contact portion of the contents except for the heat adhesion portion.

A flexographic printing facility was used to mount an i-mark (10 mm x 15 mm) printing plate between 1) a printing plate to be coated with a silicone portion and 2) a silicone coating. The specifications of the silicone-coated printing plate used and the position of the eye mark printing are shown in Figs. 3 and 4, respectively. The above-mentioned eye marks were used for easy visual confirmation of the coated surface when pouches were produced after coating. The optional silicon coating was run at a speed of 30 to 40 m per minute. As described above, the printing plate can be selectively coated only on a region requiring heat resistance and slip property other than the heat adhesion region.

A retort pouch was prepared from a polypropylene roll film coated with silicone on the contents-contacting portion by a known method. 200 g of spaghetti sauce was filled therein, sealed and retort sterilized to prepare a retort product.

Comparative Example : Manufacture of retort products packed with polypropylene film for general retort

In order to compare the performance of the silicone-coated polypropylene film with the contents-contacting portion according to the present invention, a polypropylene film not coated with silicone was used to produce retort products filled with the same amount of spaghetti sauce Respectively.

Experimental Example : contents Discharge rate  evaluation

The retort product filled with the same amount of spaghetti sauce prepared according to the above Examples and Comparative Examples was opened and discharged without any tools such as a spoon into a container prepared separately and the amount of spaghetti sauce remaining in the standing pouch was measured n = 5). As a result, the average residual amount of the spaghetti sauce remaining in the pouch made of the silicone-coated film in contact with the content was 5 g, which was smaller than the pouch made of the general polypropylene film having an average residual amount of 20 g The rate was significantly improved and almost the same results were obtained in each pouch.

Claims (11)

And a silicon layer selectively coated on one side of the film except for the heat adhesion site.
The method according to claim 1,
Wherein the roll film is based on a film comprising polypropylene.
3. The method of claim 2,
Wherein the polypropylene is a block copolymer with ethylene.
3. The method of claim 2,
Wherein the film comprising polypropylene further comprises ethylene-propylene rubber or ethylene propylene diene monomer rubber (EPDM rubber).
The method according to claim 1,
Wherein the selectively coated silicone layer comprises two or more rows of the same orientation in one or more rows. ≪ RTI ID = 0.0 > 11. < / RTI >
A method for manufacturing a semiconductor device, comprising: stacking a roll film including a selectively coated silicon layer on one surface of the substrate according to any one of claims 1 to 5 so that the surface including the silicon layer is pattern-matched; And
And thermally adhering the superimposed roll film at 200 to 220 ° C.
The method according to claim 6,
And cutting the thermally adhered roll film at a predetermined interval in a thermal bonding area to produce pouches of individual units.
A retort pouch having a contents receiving space,
A silicon layer coated on the innermost side of the pouch in contact with the contents,
Retort pouch with improved delivery.
9. The method of claim 8,
A pouch for retort as claimed in claim 6.
9. The method of claim 8,
A retort pouch in which the residual volume of the contents is reduced to less than 2.5% without the aid of a tool.
9. The method of claim 8,
A retort pouch that is three-square or standing.

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