JP2014527846A - Biaxially stretched film for food underlay - Google Patents

Abstract

The present invention relates to a biaxially stretched film for a food underlay, and a series of protrusions are formed on one side of a biaxially stretched film having a predetermined rigidity so that the contact area is minimized when contacting with food. It is related with the biaxially stretched film for food underlays which is effective in preventing that it will rot and improving the texture of food and preserving taste. [Selection] Figure 1

Description

  The present invention relates to a biaxially stretched film for a food underlay, and a series of protrusions are formed on one side of a biaxially stretched film having a predetermined rigidity so that the contact area is minimized when contacting with food. It is related with the biaxially stretched film for food underlays which can prevent rot and can improve the texture of food and preserve | save a taste.

  In general, conventional means used as an underlay for food include various types of containers, papers used as temporary means, and various forms of films.

  Conventional films and oil papers used as underlays are mostly affected by whether or not the contact surface of the film is clean and the contact area is wide when the contact surface is formed flat, and the contact surface of the film is clean. Receive. In addition, the area of the food contact portion increases, and there is a problem that the cleanliness due to the food contact is not maintained on the film.

  In addition, when the food is oily, the general vessel and the film itself cannot absorb the oil, so the oil flows to the outside and contaminates the surroundings.

  Conventionally, many oil papers or kitchen towels have been used for food laying. However, there is a concern that paper and the like use a lot of chemicals at the time of manufacture and use waste paper and the like, and there is a problem that the contact area with food is increased and paper waste is attached to food and is not preferable for hygiene.

  The present invention has been devised to solve the above-described conventional problems, and a series of protrusions are formed on one side surface of a biaxially stretched film having a predetermined rigidity so as to be in contact with food. It is an object to provide a biaxially stretched film for food underlays that minimizes area.

  Another object of the present invention is to provide a clean oil-absorbing biaxially stretched film instead of unsanitary paper.

  Another object of the present invention is to provide a biaxially stretched film that reinforces oil or moisture absorption by inserting a nonwoven fabric or paper on the back of a biaxially stretched film having protrusions.

  The stretched film for food underlay of the present invention for achieving the above object is a biaxially stretched film for underlay on which food is placed, and a series of protrusions are formed on one side of the biaxially stretched film that comes into contact with food. The contact area is minimized at the time of contact with food.

  The protrusion of the present invention is preferably formed in a structure in which the upper end is perforated.

  Further, the protrusions can be formed by embossing a biaxially stretched film or perforating with a pin.

  The material of the biaxially stretched film of the present invention is preferably formed of any one of polypropylene, polyester, nylon, polycarbonate, and polyethylene as a thermoplastic polymer.

  The biaxially stretched film of the present invention is formed of a material having a property of absorbing food oil, and the oil is coated on the bottom surface of the underlay film when the film comes into contact with food.

  In addition, the film further formed with perforations on the surface of the biaxially stretched film having the protrusions of the present invention, or water that has flowed out of food so that a nonwoven fabric or paper is inserted on the back of the film having the perforated protrusions. Or it is preferable to make oil absorb into the said nonwoven fabric or paper.

  The said nonwoven fabric of this invention consists of any one in an airlaid nonwoven fabric, a spunlace nonwoven fabric, a hydrophilic nonwoven fabric, and a lipophilic nonwoven fabric.

  According to the present invention, when used as an underlay for food, the protrusion provided on the film minimizes the contact area with the food, prevents the food from rotting, improves the texture of the food, This is useful for saving.

  The biaxially stretched film having the protrusions of the present invention can be usefully used as an underlay for other things as well as food.

  In addition, according to the present invention, food can be stored and processed neatly by forming a perforated portion on the film on which the protrusions are formed and combining a water or oil absorbing sheet on the back surface of the film. Play.

  Food rot often occurs at contact surfaces such as food and dishes, which eliminates the crispy taste of food. This is because oil or water accumulates on the contact surface between the dish and food, and the food rots due to oil or water accumulated in the dish.

  In the case of oily food, the underlay film of the present invention reduces the intake of the oil by draining the lower oil, so that the taste of the food is maintained and also useful for health.

  At the same time, the film having protrusions of the present invention is coated with food oil, so that the bowl can be easily washed.

1 is a view showing an apparatus for producing a biaxially stretched film for food underlay according to an embodiment of the present invention. 4 is a view showing a device for manufacturing a biaxially stretched film for food underlay according to another embodiment of the present invention. It is an expanded sectional view which shows the state by which the pin of a pin roll is inserted in the groove | channel of the other party roll by the apparatus of the said FIG. 1 is a diagram showing a biaxially stretched film product for food underlay according to a preferred embodiment of the present invention, wherein (a) shows a front surface with protrusions protruding upward, and (b) shows a rear surface of (a).

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

  The biaxially stretched film for food underlay according to the present invention has protrusions formed on one side of the film, and when the food comes into contact with the film surface on which the protrusions are formed, the contact area between the film and the food is minimized. Is done.

  That is, the reason for forming the protrusion on one side of the biaxially stretched film is that the biaxially stretched film has rigidity, and the protrusion formed on one side of the film also exhibits rigidity. This is because the shape of the formed protrusion can be maintained even by a load.

  For reference, in an underlay on which food is placed, it is important to minimize the contact area between the underlay and the food. This is because it helps prevent food from rotting and preserves the taste of food. Moreover, it has a function which forms a protrusion on one side of the biaxially stretched film of the present invention and absorbs and coats oily food oil. This is because a biaxially stretched film having protrusions formed on one side is lipophilic and has a function of adsorbing food oil.

  Below, the manufacturing method of the biaxially stretched film for food underlays by this invention is demonstrated.

  In order to produce a biaxially stretched film for food underlay according to the present invention, a plastic material is first melted with a pressing machine and then formed into a sheet shape through a die. At this time, the formed sheet is first stretched 2 to 10 times in the machine direction and stretched 2 to 10 times in the cross direction in a tenter oven.

  As described above, when the film is biaxially stretched, the strength of the thermoplastic material is increased and a rigid biaxially stretched film can be produced.

  In addition, the polymer chains are aligned in the width direction in the machine direction and have a property that they may be pulled and do not stretch.

  As described above, an unstretched film stretches well when pulled.

  The thermoplastic material is a thermoplastic polymer, and any one of polypropylene, polyester, nylon, and polycarbonate can be used.

  Among the above materials, polypropylene, polyester and the like are most frequently used, and the price is low and effective for the present invention. Biaxially stretched films are also possible for polyolefin materials such as polyethylene and copolymers of propylene and ethylene.

  Polypropylene has the best rigidity among the most commonly used polyolefin materials.

  On the other hand, since a film that has not been biaxially stretched has a soft property, when a protrusion is formed on one side of the film, the protrusion itself is not strong and is not suitable for the present invention.

  When forming a protrusion on one side of the biaxially stretched film according to the present invention, the biaxially stretched film can be formed by punching with a pin or embossing.

  FIG. 1 is a view illustrating an apparatus for producing a biaxially stretched film for food underlay according to an embodiment of the present invention, and FIG. 2 is a biaxially stretched film for food underlay according to another embodiment of the present invention. FIG. 3 is an enlarged cross-sectional view showing a state in which the pin of the pin roll is inserted into the groove of the counterpart roll in the apparatus of FIG.

  As shown in FIG. 1, the biaxially stretched film 10 is perforated between the counterpart roll 30 by pins 21 (see FIG. 3) of the pin roll 20. At this time, the counterpart roll 30 is a roll having a hole 31 (FIG. 3) corresponding to the pin 21 (FIG. 3) or a rubber roll. The biaxially stretched film 10 has the protrusions 40 while being perforated by the pin roll 20. When the biaxially stretched film 10 is perforated, it is preferable to apply heat to the pin roll 20 or the counterpart roll 30.

  In FIG. 1, reference numeral 5 is a first roller for winding or unwinding the film 10, and reference numeral 50 is a second roller for finally winding the film product 10 'on which the protrusions 40 are formed.

  As shown in FIG. 2, the protrusion 140 is formed by passing the biaxially stretched film 10 between the embossing roll 120 having a protrusion shape and the counterpart roll 130 and pressurizing the passed biaxially stretched film 10. The At this time, the counterpart roll 130 is formed of a rubber roll or a paper roll having an indentation corresponding to the embossing projection.

  Further, it is preferable to apply heat to the mating roll 130 in the process of forming the protrusion 140.

  The biaxially stretched film having protrusions on one side of the present invention produced by the above method is used as a food underlay for oily tempura, pork cutlet, fried egg, chijimi containing flour, grilled meat, grilled fish, etc. When used, it has the advantage that the oil content of the food can be reduced by coating the surface of the biaxially stretched film with the oil content remaining in the food. This is because the biaxially stretched film of the present invention has a good affinity for oil and has a tendency to attach oil strongly to the surface.

  Moreover, even if the biaxially stretched film having the projections of the present invention is used as an underlay for sashimi, raw meat, cut fruits, lunch boxes, etc., it is useful for preventing food from rotting and preserving the taste.

  As the material of the present invention having the above-mentioned characteristics, among the above-mentioned materials, polyolefin materials such as polypropylene have the best adhesion to oil. This is because polyolefin-based materials are produced from crude oil and are produced from oil. Particularly in the case of food with a high temperature such as tempuras, a polyester biaxially stretched film having protrusions on one side is advantageous.

  On the other hand, in order that the biaxially stretched film having protrusions of the present invention can better absorb food oil and water, a perforated part (not shown) is further formed in a part other than the protrusions, or perforated. It is possible to use an absorbent layer or an oil-absorbing layer (not shown) such as a water-absorbing nonwoven fabric, paper, a lipophilic nonwoven fabric, a nonwoven fabric having water absorption and lipophilicity simultaneously on the back of the biaxially stretched film surface having protrusions. it can.

  A biaxially stretched film further formed with a perforated portion on the biaxially stretched film surface having protrusions as described above, a water absorbent non-woven fabric, a lipophilic nonwoven fabric, a water absorbent and lipophilic property on the back surface of the biaxially stretched film surface having perforated protrusions If a non-woven fabric, paper, or the like that simultaneously has a slip sheet, water or oil is discharged from the absorbing layer or oil absorbing layer onto the biaxially stretched surface having protrusions.

  The further formed perforations increase the discharge of food oil and water. This is because the surface of the biaxially stretched film having protrusions is in the shape of a protrusion having a height of protrusions, and a part of water or oil from food or the like accumulates. Useful for draining oil and water collected in protruding film containers.

  Perforations in portions other than the protrusions were formed by passing a biaxially stretched film while applying pressure between a pin with a sharp pin pattern and a rubber roll. Further, it is preferable that the perforated part to be formed is formed in an indented perforated part opposite to the protrusion or is flattened.

  Further, an absorbent layer or an oil-absorbing layer (not shown) such as a water-absorbing nonwoven fabric, paper, or an oleophilic nonwoven fabric can be used on the back side of the biaxially stretched film surface having perforated protrusions of the present invention. This can reinforce the absorption of food oil or water.

  Nonwoven fabrics that are currently widely used as the above-mentioned lipophilic nonwoven fabrics are polypropylene nonwoven fabrics as polyolefin nonwoven fabrics, bicomponent nonwoven fabrics in which polyethylene and polypropylene are mixed, and bicomponent nonwoven fabrics in which polyethylene and polyester are mixed. There are component nonwoven fabric and polyester nonwoven fabric.

  Nonwoven fabrics currently widely used as the hydrophilic nonwoven fabric include airlaid nonwoven fabric, air-through nonwoven fabric, nonwoven fabric coated with a hydrophilic agent, nonwoven fabric including pulp and rayon fiber, nonwoven fabric including polyester, and spunlace nonwoven fabric. Usually, the hydrophilic nonwoven fabric has both water absorption and lipophilicity.

  In the present invention, when the protruding film and the nonwoven fabric or paper are interleaved, there are an embossed interleaving paper and an interleaving method using hot melt.

  When interleaving the hot melt, the hot melt is applied to the nonwoven fabric or paper to press the protruding film to interleave the paper.

  When embossing interleaving paper, ultrasonic embossing interleaving paper, interleaving paper with a heated embossing roll, and the like are possible.

  FIG. 4 is a drawing illustrating a photograph of a biaxially stretched film product for a food underlay according to the present invention. On one side of the film, protrusions with a predetermined interval are formed over the entire surface, and an intaglio layer is formed on the back side. Has been.

  Below, one Example at the time of forming a processus | protrusion using a polypropylene biaxially stretched film and using the film in which the processus | protrusion was formed as an underlay of the foodstuffs of tempura is demonstrated.

  The biaxially stretched film has a protrusion height of 30 μm to 1,500 μm, and the protrusion height varies depending on the temperature of the pin and the embossing roll, the film thickness, the line speed when forming the protrusion, and the like. For example, the higher the film, the lower the line speed, and the higher the processing temperature, the higher the protrusion height.

  On the other hand, the method of perforating the film with a pin is more advantageous than the method of embossing in order to form a high protrusion on the biaxially stretched film of the present invention. That is, a biaxially stretched film having a thickness of 60 μm was perforated using a protrusion forming apparatus shown in FIG. 1 to form protrusions on one side of the film.

As a result of the example, a biaxially stretched film having protrusions on one side surface and perforated terminal portions of the protrusions was manufactured, and the density of the protrusions was about 9 per 1 cm ³ .

  When food (pork cutlet) was placed on the protrusion, it was visually confirmed that only the end portion of the protrusion was in contact with the food and the contact area with the food was small. At this time, the height of the protrusion was about 500 μm to 700 μm.

  It was confirmed by touch that the lower surface of the biaxially stretched film for underlay was coated with pork cutlet oil.

  As described above, the biaxially stretched film for an underlay according to the present invention has a protrusion formed on one side of the film, and the bottom of the food is in contact with the upper part of the side where the protrusion is formed. The bottom surface of the film is formed of a material that absorbs oil from food, thereby preventing the food from rotting and improving the texture of the food to help preserve the taste.

  On the other hand, the biaxially stretched film having the protrusions of the present invention can be used as an underlay for other things besides food. For example, the biaxially stretched film having the projections of the present invention can also be used for cushioning. In this case, a series of protrusions having a height of 30 μm to 1,500 μm are formed on one side surface of the biaxially stretched film having rigidity, and the protrusions are perforated at the upper end or embossed on the film. Processed to form.

10: Biaxially stretched film 20: Pin roll 21: Pin 30: Counter roll 31: Hole 40: Protrusion 120: Embossing roll 130: Counter roll 140: Protrusion

Claims (8)

A biaxially stretched film for underlaying on which food is placed,
A biaxially stretched film for a food underlay in which a series of protrusions having an upper end perforated is formed on one side of a rigid biaxially stretched film so that the contact area between food and the film is reduced .   The biaxially stretched film for food underlays according to claim 1, wherein the perforated protrusion is formed by perforating the biaxially stretched film with a pin. A biaxially stretched film for underlaying on which food is placed,
A biaxially stretched film for food underlays in which a series of embossed protrusions are formed on one side of a rigid biaxially stretched film to reduce the contact area between food and the film.   The biaxially stretched film for a food underlay according to any one of claims 1 to 3, wherein the biaxially stretched film is formed of any one of polypropylene, polyester, nylon, and polycarbonate.   The biaxially stretched film for a food underlay according to any one of claims 1 to 3, wherein the biaxially stretched film is formed of a material having a property of absorbing food oil.   The food underlay according to claim 1 or 3, wherein paper or non-woven fabric is inserted on the back of the biaxially stretched film having perforated protrusions or the biaxially stretched film having protrusions in which perforations are further formed in portions other than the protrusions. Biaxially stretched film.   The biaxially stretched film for food underlays according to claim 6, wherein the nonwoven fabric is any one of an airlaid nonwoven fabric, a spunlace nonwoven fabric, a hydrophilic nonwoven fabric, and a lipophilic nonwoven fabric. A biaxially stretched film used for cushions,
A cushion formed by forming a series of protrusions having a height of 30 μm to 1,500 μm on one side of a rigid biaxially stretched film, and the protrusions are perforated at the upper end or embossed on the film Biaxially stretched film.

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