KR100416818B1 - An absorption pad used in absorbing liquid of food - Google Patents

Abstract

The present invention relates to an absorbent pad for absorbing food liquids, which is disposed and used between foods and food containers during food packaging to absorb and store liquids discharged from foods from foods. Absorption pad for food liquid absorption of the present invention is composed of a fluid permeable upper sheet 10, a fluid impermeable lower sheet 30 and an absorbent material layer 20 positioned therebetween, wherein the absorbent material layer 20 is It is made of a pulp 21 and thermally active fibers 22, characterized in that the pulp is arranged in the direction (Z direction) in which the food liquid is absorbed and stored in the absorption pad. According to the present invention, the pulp in the absorbent material layer 20 is arranged in the direction of absorbing and storing the liquid (Z direction), so that the liquid discharged from the food can be absorbed and stored more quickly and safely, and the antibacterial property is excellent.

Description

An absorption pad used in absorbing liquid of food}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent pad (hereinafter referred to as an "absorbent pad for absorbing food liquid") which is disposed and used between food and a food container during food packaging in order to absorb and store liquid discharged from the food. More specifically, the present invention relates to an absorbent pad for absorbing food liquids, which can absorb and store liquid discharged from food more quickly and safely, and has excellent antibacterial properties, so that food can be stored in a fresh state for a long time.

In general, foods such as meat, fish, vegetables, and fruits are destroyed when the cells are destroyed, the fluid inside and outside the cell flows out to reduce the freshness of the food. When the freshness of the food is reduced, the water retention capacity of the food is reduced, and more liquid (exudate) flows out of the food, further accelerating food self-degradation, bacterial growth and discoloration.

In order to maintain the freshness of food, a method of separating the food and the spilled liquid by absorbing the liquid spilled from the food using the absorption pad is widely used.

When paper or sponge is used as the absorbent pad, the food and the liquid spilled from the food appear to be separated from each other, but in reality, the freshness of the food cannot be maintained because they are in contact with each other.

Recently, an absorbent pad made of a fluid permeable upper sheet, a fluid impermeable lower sheet, and an absorbent material layer disposed therebetween has been developed for the purpose of maintaining food and liquid spilled from the food separately from each other to improve the freshness of the food. It is proposed and widely used.

As a specific conventional absorbent pad for absorbing food liquids, Korean Patent Laid-Open Publication No. 1992-2324 proposes an absorbent pad in which a powdered or granular edible sugar is located between a semipermeable membrane and a water absorbent porous sheet. The present invention proposes an absorbent pad in which absorbent materials such as pulp and / or carboxymethylcellulose are arranged between the fluid permeable upper sheet and the fluid impermeable lower sheet, and Korean Patent Laid-Open No. 1999-87146 proposes to form one or more cells. It is proposed an absorbent pad having a combined upper sheet and a lower sheet, wherein an absorbent is placed in the cell and at least one of the sheets is formed of a liquid impermeable material comprising microperforations.

The conventional absorbent pads have an advantage that the absorbent material is located between the upper sheet and the lower sheet to absorb and store the liquid discharged from the food in a separated state from the food, but the absorbent material is randomly disposed between the upper pad and the lower pad. Because of this arrangement, there is a limit to rapidly absorbing, distributing and safely storing the liquid discharged from the food.

As a result, when pressure is applied from the outside or when there is too much liquid discharged from the food, the liquid absorbed by the absorption pad and stored liquid flows back to the food and comes into contact with the food, thereby lowering the freshness of the food.

In order to prevent such a phenomenon, when the absorbent pad is made thick, not only the manufacturing cost of the absorbent pad increases, but also the inconvenience of having to manufacture a larger food packaging container.

An object of the present invention is to provide an absorbent pad that can quickly absorb, distribute, and safely store a large amount of liquid discharged from food even in a thin thickness.

In the present invention, the pulp in the absorbent material layer 20 is arranged in the direction in which the liquid of the food is absorbed and stored by the absorbent pad (hereinafter referred to as "Z direction"), so that a large amount of liquid discharged from the food even at a thin thickness can be quickly obtained. It is an object of the present invention to provide an absorbent pad for absorbing, distributing and storing food liquids safely. In addition, the present invention is to provide an absorbent pad for absorbing food liquid having good antimicrobial properties by containing an antimicrobial material in the absorbent pad, more preferably in the fluid permeable upper sheet of the absorbent pad.

Figure 1 is a schematic cross-sectional view of the absorbent pad of the present invention

2 is a schematic cross-sectional view of the absorbent pad of the present invention in which the absorbent material layer 20 is made of pulp and thermally active fibers.

3 is a schematic cross-sectional view of a conventional absorbent pad in which the absorbent material layer 20 is made of pulp and an absorbent resin.

Figure 4 is a process schematic diagram of manufacturing the present invention absorbent pad

※ Explanation of code of main part of drawing

10 fluid permeable upper sheet 20 absorber layer

30: fluid impermeable lower sheet 11: mesh film or nonwoven fabric

12, 32: tissue 21: pulp 22: thermally active fibers 23: absorbent resin

31: waterproof film A: fluid impermeable lower sheet supply roller

B: Mesh belt C: Drum former D: Pulp feeder

E: Heat activated fiber feeder F: Dryer

G: Hot Melt Adhesive Feeder H: Fluid Permeable Upper Sheet Feed Roller

I: Nitro Roller J: Absorber Pad Winding Roller

Absorption pad for food liquid absorption of the present invention for achieving the above problems, the liquid permeable upper sheet 10, the liquid impermeable lower sheet 30 and the absorbent material layer 20 located between them is composed of food In the absorbent pad for absorbing and storing the liquid flowing out, the absorbent material layer 20 is made of a pulp 21 and the thermally active fibers 22, the pulp is absorbed and stored in the absorbent pad food liquid It is characterized by being arranged in the direction (Z direction).

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

First, the absorbent pad for absorbing food liquid of the present invention (hereinafter abbreviated as "absorbent pad") is a fluid permeable upper sheet 10, a fluid impermeable lower sheet 30, and an absorbent material disposed therebetween. It consists of layer 20.

The fluid permeable top sheet 10 is positioned directly below the food when in use and is in direct contact with the food, and the fluid impermeable bottom sheet 30 is in contact with the bottom of the food container. The fluid permeable upper sheet 10 may be formed of one layer of perforated mesh film or nonwoven fabric 11, or may be formed of two layers of laminated perforated mesh film or nonwoven fabric 11 and tissue 12. .

As illustrated in FIG. 1, the absorbent material in the absorbent material layer 20 is a two-layered structure in which a mesh film or nonwoven fabric 11 having a permeable upper sheet 10 is stacked and tissues 12 arranged thereunder. It is more desirable to prevent them from escaping.

In the present invention, the nonwoven fabric 11 constituting the fluid permeable upper sheet 10 is a single fiber blending (Blending), other surface (Opening), carding (Bonding), cutting (Sliting) and winding ( Winding) can be produced by a conventional process.

The fibers constituting the nonwoven fabric 11 are polyethylene fibers, polypropylene fibers, polyester fibers, polyamide fibers, rayon fibers, polyurethane fibers, cotton fibers, hemp fibers or composite fibers thereof.

Examples of the composite fibers include split-by-side split composite fibers, sheath-core cored sheath-type composite fibers, and island-in-the-sea composite fibers. Can be.

The fluid impermeable lower sheet 30 may be formed of only one layer of the waterproof film 31, or may be formed of two layers in which the waterproof film 31 and the tissue 32 are stacked. As shown in FIG. 1, the fluid-permeable lower sheet 30 has a two-layer structure in which the waterproof film 31 and the tissues 32 arranged thereunder are laminated to absorb the absorbent material in the absorbent material layer 20 to the outside. More desirable to prevent.

On the other hand, the absorbent material layer 20 is composed of a pulp 21 and thermally active fibers 22.

The present invention is characterized in that the pulp 21 in the absorbent material layer 20 is arranged in the direction (Z direction) in which the liquid flowing out of the food is absorbed and stored in the absorbent pad as shown in FIG. 2.

Liquids flowing out of the food by the above pulp arrangement are rapidly absorbed and stored into the absorbent material layer 20. Specifically, the pulp arranged in the Z direction acts as a conduit when absorbing liquid, so that the liquid is absorbed into the absorbent material layer 20 more quickly and safely stored.

2 is a cross-sectional view of an absorbent pad in which the absorbent material layer 20 is composed of pulp 21 and thermally active fibers 22. The pulp 21 in the absorbent material layer 20 are bonded to each other by thermally active fibers. In other words, the pulp 21 and the thermally active fibers 22 in the absorbent material layer 20 are bonded to each other by the pulp and the pulp or the pulp and the thermally active fibers by the thermally active fibers 22 serving as a binder.

The thermally active fibers are polyethylene resin (PE) and polyester resin (PET), polyethylene resin (PE) and polypropylene resin (PP), polypropylene resin (PP) and polyester resin (PET), modified polyester resin ( Modified PET) and polyester resins (PET) are composite fibers in the form of short fibers that are spun in various forms.

The composite fiber has a side-by-side arrangement in which one component is arranged at the center or eccentric position of the fiber cross-section, and the other one component surrounds it (Seath Core Type), and the two components are alternately arranged side by side. Side by Side Type and the like.

Since the thermally active fibers are composed of two resin components having different melting points from each other, one component having a relatively low melting point is melted within a predetermined temperature range of about 90 to 160 ° C. to melt pulp and pulp or pulp and thermally active fibers. Bonding (Bonding) role, and the remaining one of the relatively high melting point does not melt the role of maintaining the shape of the fiber as it is.

3 is a cross-sectional view of a conventional absorbent pad in which the absorbent material layer 20 is composed of pulp 21 and absorbent resin 23.

The absorbent resin 23 may be a starch graft copolymer, a crosslinked carboxymethyl cellulose derivative, or a modified hydrophilic acrylate.

On the other hand, the absorbent pad of the present invention contains an antimicrobial substance. More preferably, 0.1-3.0% by weight of the antimicrobial substance is contained in the fluid permeable upper sheet 10 of the absorbent pad.

As an antimicrobial substance, an organic antimicrobial agent or an inorganic antimicrobial agent is used. Organic antimicrobial agents include organic copper compounds, organic zinc compounds, organic nitrogen compounds, organosilicon quaternary ammonium, and more specifically, isothiazoline compounds and pyrithione metal compounds. As the inorganic antimicrobial agent, an inorganic carrier such as zeolite or silica alumina is substituted with a metal ion excellent in antimicrobial properties such as silver, copper, and zinc. More preferably, silver zeolite is used.

If the content of the antimicrobial material is less than 0.1% by weight, the antimicrobial property is insufficient, and if the content of the antimicrobial material is more than 3% by weight, the manufacturing cost rises and is not preferable for edible use.

Looking at an example of a process for imparting antimicrobial activity to a non-woven fluid permeable upper sheet 10, a mixture of chitosan and silver (Ag) particles having a nano-size particle size (trade name: ChitoFix Siver) and distilled water are mixed at a weight ratio of about 1: 9. After the dipping liquid is prepared, the nonwoven fabric is padded therewith, the dipping liquid is squeezed to apply 2.5-3 g per 1 m 2 of the nonwoven fabric, and then dried at 160-170 ° C. to impart antimicrobial properties to the nonwoven fabric.

Next, an example of a method of manufacturing the absorbent pad of the present invention will be described with reference to FIG. 4. Figure 4 is a process schematic diagram of an example of manufacturing the absorbent pad of the present invention.

First, the present invention is the pulp feeder (D) and the thermally active fiber feeder (E) at the top on the fluid impermeable lower sheet 30 continuously supplied by the fluid impermeable lower sheet supply roller (A) as shown in FIG. Pulps (pulverized pulp), thermally active fibers, etc. are uniformly dispersed and arranged using the drumformer (C) installed, and then dried in a dryer (F).

Subsequently, after laminating the fluid permeable upper sheet 10 continuously supplied by the fluid permeable upper sheet supply roller H on the dried fluid impermeable lower sheet 30, it is heated and pressed with a nip roller I. To prepare an absorbent pad of the present invention. At this time, the present invention is characterized in that the lower end portion (mesh belt portion) of the drum former (C) to reduce the pressure to 100-600mmHg so that the pulp is arranged in the Z direction.

Various physical properties of the absorbent pad in the present invention were measured and evaluated by the following method.

Antibacterial test

After placing the food (chicken) on the absorbent pad in a packaged state for 3 days, the absorbent pad was separated and incubated in a 37 ° C. incubator for 24 hours, and then the general bacterial concentration in the absorbent pad was measured.

Permeation time measurement for liquids discharged from food (chicken)

8 g of the liquid discharged from the food (chicken) is put into an absorption pad of 7 cm in width and 20 cm in length, and the time when all the liquid is sucked on the surface is measured. The lower the value, the better the surface absorption and transmittance of the food liquid.

Measurement of surface dryness of liquids discharged from food (chicken)

After absorbing all 8g of liquid discharged from food (chicken) into an absorbent pad of 7cm in width and 20cm in length, and then leaving the absorbent pad at room temperature for 10 minutes, the amount of 5 sheets of filter paper to pressurize to 0.3psi Record it, and the lower the value, the better the surface dryness.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

Example 1

First, by dipping, squeezing and drying the nonwoven fabric 11 in a dipping liquid in which an antimicrobial solution (trade name: ChitoFix Silver) and distilled water are mixed at a weight ratio of 1: 9, the antiwoven fabric 11 containing 1.5 wt% of the antimicrobial agent The tissue 12 is laminated to prepare a fluid permeable upper sheet 10. Meanwhile, the tissue 32 is laminated on the waterproof film 31 to prepare a fluid impermeable lower sheet. Next, the drum former (C) while continuously supplying the fluid-impermeable lower sheet (30) to the tissue (32) while the tissue (32) is positioned at the upper portion with the waterproof film (31) at the lower portion thereof. 30 parts by weight of pulp and 50 parts by weight of thermally active fibers on the fluid-impermeable lower sheet 30 with respect to 100 parts by weight of the fluid impermeable lower sheet 30 with the pulp feeder (D) and the thermally active fiber feeder (E) installed on the substrate. It disperse | distributes and arrange | positions, the absorber material layer 20 is formed, and it dries in drier F. At this time, the lower end of the drum former (C) was decompressed to 300mmHg so that the pulp were arranged in the Z direction. Subsequently, the fluid permeable upper sheet 10 was laminated on the dried fluid impermeable lower sheet 30, and then heated and compressed with a nip roller I to prepare an absorbent pad. In the lamination, the fluid permeable upper sheet 10 was supplied such that the nonwoven fabric 11 constituting the fluid permeable upper sheet 10 was positioned above and the tissue 12 was positioned below. The results of evaluating various physical properties of the manufactured absorbent pads are shown in Table 1.

Example 2

First, the silver-based zeolite (antibacterial agent) contains 2.0 wt%, the perforated polyethylene mesh film 11 is used as the fluid permeable upper sheet 10, and the waterproof film 31 is used as the fluid impermeable lower sheet 30. It was. The fluid-impermeable lower sheet 30 is supplied to the pulp feeder D and the heat-activated fiber feeder E installed on the drum former C while continuously supplying the fluid-impermeable lower sheet 30 by its feed roller A. 30) 35 parts by weight of pulp and 50 parts by weight of thermally active fibers are dispersed and disposed on the fluid impermeable lower sheet 30 to form an absorbent material layer 20, and then dried in a dryer (F). At this time, the lower end of the drum former (C) was decompressed to 300mmHg so that the pulp were arranged in the Z direction. Subsequently, the fluid permeable upper sheet 10 was laminated on the dried fluid impermeable lower sheet 30, and then heated and compressed with a nip roller I to prepare an absorbent pad. The results of evaluating various physical properties of the manufactured absorbent pads are shown in Table 1.

Comparative Example 1

First, the tissue 12 is laminated on the nonwoven fabric 11 that is not treated with the antimicrobial agent to prepare a fluid permeable upper sheet 10. Meanwhile, the tissue 32 is laminated on the waterproof film 31 to prepare a fluid impermeable lower sheet. Next, the drum former (C) while continuously supplying the fluid-impermeable lower sheet (30) to the tissue (32) while the tissue (32) is positioned at the upper portion with the waterproof film (31) at the lower portion thereof. 30 parts by weight of pulp and 50 parts by weight of thermally active fibers on the fluid-impermeable lower sheet 30 with respect to 100 parts by weight of the fluid impermeable lower sheet 30 with the pulp feeder (D) and the thermally active fiber feeder (E) installed on the substrate. It disperse | distributes and arrange | positions, the absorber material layer 20 is formed, and it dries in drier F. At this time, the pulp was randomly arranged without decompressing the lower end of the drummer (C), and a composite fiber in which a polyethylene resin and a polyester resin were composited into a sheath type was used as a thermally active fiber. Subsequently, the fluid permeable upper sheet 10 was laminated on the dried fluid impermeable lower sheet 30, and then heated and compressed with a nip roller I to prepare an absorbent pad. In the lamination, the fluid permeable upper sheet 10 was supplied such that the nonwoven fabric 11 constituting the fluid permeable upper sheet 10 was positioned above and the tissue 12 was positioned below. The results of evaluating various physical properties of the manufactured absorbent pads are shown in Table 1.

Comparative Example 2

First, a non-microbial treatment, by laminating the tissue 12 on the perforated polypropylene mesh film 11 to produce a fluid permeable upper sheet (10). Meanwhile, the tissue 32 is laminated on the waterproof film 31 to prepare a fluid impermeable lower sheet. Next, the drum former (C) while continuously supplying the fluid-impermeable lower sheet (30) to the tissue (32) while the tissue (32) is positioned at the upper portion with the waterproof film (31) at the lower portion thereof. Disperse 30 parts by weight of pulp and 50 parts by weight of the absorbent resin on the fluid impermeable lower sheet 30 with respect to 100 parts by weight of the impermeable lower sheet 30 with the pulp feeder D and the absorbent resin feeder E installed thereon. It arrange | positions, and forms the absorber material layer 20, and it dries in drier F. At this time, the lower end of the drum former (C) was not decompressed so that the pulp was randomly arranged, and an absorbent resin was used as acrylate sodium salt. Subsequently, the fluid permeable upper sheet 10 was laminated on the dried fluid impermeable lower sheet 30, and then heated and compressed with a nip roller I to prepare an absorbent pad. In the laminating, the perforated polypropylene mesh film 11 constituting the fluid permeable top sheet 10 was supplied with the fluid permeable top sheet 10 such that the perforated polypropylene mesh film 11 was positioned at the top and the tissue 12 was located at the bottom. The results of evaluating various physical properties of the manufactured absorbent pads are shown in Table 1.

Absorption pad physical property measurement result division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Antibacterial: General bacterial pain (CFU / mL) 70 33 13,000 15,000 Permeation time (seconds) for liquids discharged from food (chicken) 70 65 208 190 Surface dryness (g) for liquids released from food (chicken) 1.5 2.3 3.5 4.4

The present invention can more efficiently and safely absorb and store the liquid flowing out of the food to effectively prevent the liquid spilled from the food contacting the food again. Thus, the absorbent pad of the present invention can maintain food freshness for a longer time. In addition, the present invention is economical because it can effectively absorb and store a large amount of food liquid even if the thickness is thin. In addition, the present invention is excellent in antimicrobial properties can be stored more hygienic food.

Claims (8)

An absorbent pad comprising a fluid permeable upper sheet 10, a fluid impermeable lower sheet 30, and an absorbent material layer 20 positioned therebetween, the absorbent pad absorbing and storing liquid flowing out of food, wherein the absorbent material layer 20 is composed of pulp 21 and thermally active fibers 22, and the pulp is absorbed for absorbing food liquid, characterized in that the pulp is arranged in the direction (Z direction) where the food liquid is absorbed and stored in the absorption pad. pad. The absorbent pad of claim 1, wherein 0.1-3.0 wt% of the antimicrobial substance is contained in the fluid permeable upper sheet (10) of the absorbent pad. The absorbent pad of claim 1, wherein the fluid permeable upper sheet is a perforated mesh film or a nonwoven fabric. 2. The liquid food absorption of claim 1, wherein the fluid permeable upper sheet 10 has a two-layer structure in which (i) a perforated mesh film layer or a nonwoven fabric 11 and (ii) a tissue layer 12 are laminated. Absorption pad for The absorbent pad of claim 1, wherein the fluid impermeable lower sheet 30 is a waterproof film. The absorbent pad for absorbing food liquid according to claim 1, wherein the fluid impermeable lower sheet (30) has a two-layer structure in which (i) a waterproof film (31) and (ii) a tissue (32) are laminated. The method of claim 1, wherein the thermally active fiber 22 is a composite fiber in which two kinds of resins having different melting points from each other on a fiber cross section are composited in a sheath core type or a side by side type. Absorption pad for absorbing food liquids, characterized in that. delete