KR20030086976A - An absorption pad used in absorbing liquid of food - Google Patents

Abstract

PURPOSE: An absorbent pad for absorbing the food exudate is provided to prevent the bacteria from growing by containing the antimicrobial and to keep the food safe and sanitary for a long time by composing component harmless to human. CONSTITUTION: The absorbent pad for absorbing and keeping the food exudate comprises a top sheet(10), a bottom sheet(30) and an absorbent material layer located between the top sheet and the bottom sheet. The absorbent material layer comprises a pulp(21), an absorbent resin(23) and the antimicrobial(24). The top sheet(10) is the waterproof film or perforated mesh film of the olefin type resin. The bottom sheet(30) is non-woven fabric.

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 absorption pad for absorbing food liquids, which can quickly and safely absorb and store liquids discharged from foods, and has excellent antibacterial properties, so that foods can be stored safely 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 lack antimicrobial properties and cause unhealthy problems such as Salmonella salmonella expression when food is stored for a long time, causing food poisoning. In addition, the conventional absorbent pads are discharged to the outside harmful to the human body there was a problem, such as inappropriate pads for food liquids.

In order to solve this problem, the present invention contains an antimicrobial agent such as chitosan in the absorbent material layer, which is an intermediate layer of the absorbent pad, and does not discharge harmful substances to the outside to safely and hygienicly store the food in storage. To provide an absorbent pad that can be.

The present invention is to provide an absorbent pad for absorbing food liquid which can effectively prevent the growth of bacteria such as Salmonella by containing an antibacterial agent such as chitosan in the absorbent material layer (20). In addition, the present invention is to provide an absorbent pad for absorbing food liquid excellent in hygiene and safety by configuring the absorbent resin 23 to harmless components.

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, an absorbent resin, and an antibacterial agent.

Figure 3 is a process schematic diagram of manufacturing the absorbent pad of the present invention

※ Explanation of code of main part of drawing

10: upper sheet 20: absorber layer

30: lower sheet 21: pulp

12,32: tissue 23: absorbent resin

24: Antibacterial A: Lower sheet supply roller

B: Mesh Belt C: Drumformer

D: Pulp Feeder E: Antibacterial or Absorbent Resin Feeder

F: Dryer G: Hot Melt Adhesive Feeder

H: Upper sheet feed roller I: Nip roller

J: absorption pad winding roller

Absorption pad for food liquid absorption of the present invention for achieving the above problems is composed of the upper sheet 10, the lower sheet 30 and the absorbent material layer 20 disposed therebetween to the liquid flowing out of the food In the absorbent pad for absorbing and storing, the absorbent material layer 20 is made of a pulp 21, an absorbent resin 23, and an antibacterial agent 24, and the upper sheet 10 is an olefin resin waterproof film or Perforated mesh film, characterized in that the lower sheet 30 is a nonwoven fabric.

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 an upper sheet 10, a lower sheet 30, and an absorbent material layer 20 disposed therebetween as shown in FIG. It is composed.

The upper sheet 10 is positioned directly under the food when in use, so that the upper sheet 10 is in direct contact with the food, and the lower sheet 30 is in contact with the bottom of the food container. The upper sheet 10 is a waterproof film or a perforated mesh film of olefin resin.

More specifically, the upper sheet 10 is composed of LB 5000 (trade name) of LG Chemical Co., Ltd., which is a low density polyethylene resin.

The upper sheet 10 may be formed of one layer of the waterproof film or the perforated mesh film described above, and in order to prevent the absorbent resin from escaping toward the food, the two-layer structure in which the waterproof film or the perforated mesh film and the tissue are laminated. Can also be formed.

The lower sheet 30 is a nonwoven fabric. The lower sheet 30 may be formed of one layer of nonwoven fabric, or may be formed of a two-layered structure in which a nonwoven fabric and tissues are laminated to prevent the absorbent resin from coming out.

The nonwoven fabric may be manufactured by a conventional process of blending short fibers, opening, carding, bonding, slitting and winding.

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

As the composite fiber, side-by-side type split fiber, sheath-core type sheath type fiber and islandland in the sea fiber can be used. Can be.

As the absorbent resin 23, FAVOR PAC 100 (trade name) of the Stockhausen company is used.

The water absorbent resin 23 is a crosslinked sodium acrylate copolymer, and 0.15% by weight of water-soluble extracts extracted during treatment for 24 hours in a water-soluble sodium chloride solution (solid content: 0.2% by weight) at 20 ° C. It is contained below has the advantage of not emitting substances harmful to the human body during use.

On the other hand, the absorbent material layer 20 of the absorbent pad of the present invention contains an antimicrobial agent. The content of the antimicrobial agent in the absorbent material layer 20 is preferably 0.1 to 5% by weight.

If the content of the antimicrobial agent is less than 0.1% by weight, the antimicrobial activity is insufficient, and if the content of the antimicrobial agent is more than 5% by weight, the manufacturing cost is increased and it is not suitable for edible use.

As an antimicrobial agent, chitosan, 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, chitosan or chitosan-silver mixed liquid is used.

On the other hand, in order to further improve the antimicrobial properties of the absorbent pad, the antimicrobial agent may be contained in the non-woven lower sheet 30, 0.1 to 3.0% by weight.

On the other hand, the pulp 21 in the absorbent material layer 20 is more preferably 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.

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 a pulp 21, an absorbent resin 23, and an antimicrobial agent 24. As shown in FIG. 2, the absorbent resin 23 is randomly distributed between pulps 21 arranged in the Z direction.

As described above, the absorbent resin 23 is FAVOR PAC 100 (trade name) of the Stockhausen company, and PL-416 or NF-40I (trade name), which is a product of the Weyerhaeuser company, is used as the pulp 21. It is good.

Next, an example of a method of manufacturing the absorbent pad of the present invention will be described with reference to FIG. 3. 3 is a process schematic diagram of an example of manufacturing an absorbent pad of the present invention.

First, the present invention provides a drum former (C) having a pulp feeder (D) and an antimicrobial or absorbent resin feeder (E) installed on the lower sheet 30 continuously supplied by the lower sheet supply roller (A) as shown in FIG. The pulp (crushed pulp), the antimicrobial agent and the absorbent resin are uniformly dispersed and placed, followed by drying in the dryer (F).

Subsequently, after laminating the upper sheet 10 continuously supplied by the upper sheet supply roller H on the dried lower sheet 30, the absorbent pad of the present invention is heated and compressed by a nip roller I. Manufacture. 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 emitted 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

A pulp feeder (D), an absorbent resin and an antibacterial agent installed on the drum former (C) while continuously supplying the lower sheet (30), which is a nonwoven fabric containing 1% by weight of an antibacterial agent (chitosan), by its feed roller (A). : 35 parts by weight of pulp, 62 parts by weight of absorbent resin, and 3 parts by weight of an antimicrobial agent (trade name: ChitoFix Silver) were dispersed on the lower sheet 30 using a Chito Fix Siver feeder E, 100 parts by weight of the absorbent material layer 20. 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) to reduce the pressure to 300mmHg so that the pulp is arranged in the Z direction, as the absorbent resin was used FAVOR PAC-100 (trade name) of the Stockhausen company. Subsequently, after laminating the upper sheet 10, which is a waterproof film composed of LG Chem's LB-5000 (product name), which is a low density polyethylene resin (LDPE) on the dried absorbent material layer 30, the nip roller (I) Heated and compressed to prepare an absorbent pad. The results of evaluating various physical properties of the manufactured absorbent pads are shown in Table 1.

Example 2

Absorbed by the pulp feeder (D) and the absorbent resin and antibacterial (trade name: ChitoFix Silver) feeder (E) installed on the drum former (C) while continuously supplying the non-woven lower sheet (30) by its feed roller (A). 35 parts by weight of pulp, 61 parts by weight of absorbent resin, and 4 parts by weight of antibacterial agent (trade name: ChitoFix Silver) are dispersed and disposed on the lower sheet 30 to form an absorbent material layer 20, and then a dryer ( F) It is dried in. 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, and FAVOR PAC-100 (trade name) of Stockhausen Company was used as the absorbent resin. Subsequently, after laminating the upper sheet 10, which is a mesh film composed of LG Chem's LB-5000 (product name), which is a low density polyethylene resin (LDPE), on the dried absorbent material layer 20, a nip roller (I) was used. Heated and compressed to prepare an absorbent pad. As the upper sheet 10, an antimicrobial agent (trade name: ChitoFix Silver) containing 1% by weight was used. The results of evaluating various physical properties of the manufactured absorbent pads are shown in Table 1.

Example 3

First, the upper sheet 10 is manufactured by laminating a tissue on a mesh film composed of LB-5000 (product name) of LG Chemical Co., Ltd., a low density polyethylene resin (LDPE). Meanwhile, the lower sheet 30 is manufactured by laminating a tissue on a nonwoven fabric containing 1.5 wt% of an antimicrobial agent (trade name: ChitoFix Silver). Next, the lower sheet 30 is absorbed with the pulp feeder D installed on the drum former C while continuously supplying the tissue with the nonwoven fabric at the upper portion thereof by means of the feed roller A thereof. The resin and antimicrobial agent (E) are dispersed and disposed on 35 parts by weight of pulp, 62 parts by weight of absorbent resin, and 3 parts by weight of antibacterial agent (trade name: ChitoFix Silver) based on 100 parts by weight of absorbent material layer (20). After the absorber material layer 20 is formed, it is dried in a dryer (F). At this time, the lower end of the drum former (C) was reduced to 300mmHg so that the pulp were arranged in the Z direction, and FAVOR PAC-100 (trade name) of Stockhausen Company was used as the absorbent resin. Subsequently, the upper sheet 10 was laminated on the dried absorbent material layer 20, and then heated and compressed with a nip roller I to prepare an absorbent pad. In the lamination, the upper sheet 10 was supplied such that the perforated mesh film constituting the upper sheet 10 was positioned at the top and the tissue was positioned at the bottom. 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 lower end of the drum former (C) was not decompressed so that the pulp was randomly arranged, and as the thermally active fiber, a composite fiber in which a polyethylene resin and a polyester resin were composited into a sheath type was used. Subsequently, the fluid permeable 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 Example 3 Comparative Example 1 Comparative Example 2 Antibacterial: General bacterial concentration (CFU / mL) 40 20 30 13,000 15,000 Permeation time (seconds) for liquid discharged from food (chicken) 75 70 60 208 190 Surface dryness (g) for liquids released from food (chicken) 1.6 1.5 2.0 3.5 4.4

The present invention is particularly excellent in antimicrobial and can keep food more hygienic for a long time. In addition, the present invention is particularly safe as a food pad because no harmful components are extracted from the absorbent resin in the absorbent pad. In addition, the present invention can more quickly absorb, store the liquid flowing out of the food.

Claims (9)

An absorbent pad comprising an upper sheet 10, a lower sheet 30, and an absorbent material layer 20 disposed therebetween, wherein the absorbent material layer 20 is a pulp. (21), the absorbent resin 23 and the antimicrobial agent 24, the upper sheet 10 is an olefin resin waterproof film or a perforated mesh film, the lower sheet 30 is characterized in that the nonwoven fabric Absorption pad for food liquid absorption. The absorption pad of claim 1, wherein the content of the antimicrobial agent 24 in the absorbent pad 20 is 0.1 to 5% by weight. The absorbent pad for absorbing food liquid according to claim 1, wherein the lower sheet contains 0.1 to 3.0% by weight of an antimicrobial agent. The absorbent pad of claim 1 or 3, wherein the antimicrobial agent is chitosan, an organic antimicrobial agent, or an inorganic antimicrobial agent. The absorbent pad according to claim 1, wherein the absorbent resin (23) is a crosslinked sodium acrylate copolymer containing 0.15% by weight or less of water-soluble components. The absorbent pad for absorbing food liquid according to claim 1, wherein the pulp is arranged in a direction (Z direction) in which the food liquid is absorbed and stored in the absorbent pad. The absorbent pad according to claim 1, wherein the upper sheet (10) has a two-layer structure in which (i) a waterproof film or a perforated mesh film and (ii) a tissue is laminated. The absorbent pad according to claim 1, wherein the lower sheet (30) has a two-layer structure in which (i) nonwoven fabric and (ii) tissue are laminated. The absorbing pad for absorbing food liquid according to claim 1, wherein the olefin resin is a low density polyethylene resin.