KR101814753B1 - Grain sack for parcel service - Google Patents

Abstract

A courier grain bag is disclosed. The disclosed delivery grain pack includes a sheath layer, a paper layer, a PE (polyethylene) sheath layer and a LLDPE (linear low density polyethylene) layer in this order.

Description

{Grain sack for parcel service}

A courier grain bag is disclosed. More specifically, a package bag for courier for which a separate packaging box is unnecessary is disclosed.

Recently, there has been an increasing number of cases in which consumers order grain or feed through a visit, telephone or online order to a producer or a seller and deliver it by courier according to activation of direct transactions and online shopping, competition between service providers, and demand of consumers. In this case, the grain or feed is primarily packaged in a grain bag for courier.

However, the conventional grain bag has low durability and is likely to be damaged during transportation, so that it is secondarily packed in a packaging box and then delivered. Therefore, conventionally, in addition to the grain bag, a separate packing box is additionally required. Therefore, when the grain bag is delivered by courier, the packaging process becomes complicated and the cost increases.

One embodiment of the present invention provides a courier grain bag that does not require a separate packaging box.

According to an aspect of the present invention,

An outer shell layer;

Paper layer;

A polyethylene (PE) sheeting layer; And

And a LLDPE (linear low density polyethylene) layer in this order.

The outer layer may include oriented polypropylene (OPP).

The paper layer may include roll paper.

The carrier grain bundle may further include a transparent window penetrating the envelope layer, the paper layer, and the PE webbing layer.

The LLDPE layer may be transparent.

The courier grain bag includes a body and a bottom sealing portion, and the bottom sealing portion may include a junction between opposing ends of the body.

The junction may comprise two LLDPE layers bonded together.

The courier grain bundle may further include a plurality of air vents.

The grain bag for delivering according to one embodiment of the present invention is advantageous in that it does not require a separate packaging box because of its excellent durability. Therefore, when the above-mentioned grain bag for courier is used, the packaging process can be simplified, the time and manpower required for packaging can be reduced, and the packaging cost can be reduced.

1 is a perspective view illustrating a grain bag for delivery according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the body part of the delivery grain pack of FIG. 1.
FIG. 3 is a cross-sectional view showing a transparent window of the parcel package for parcel delivery shown in FIG. 1 and an adjacent portion thereof.
FIG. 4 is a cross-sectional view showing a bottom seal portion and its adjacent portion among the delivery corrugated bagboard of FIG. 1;

Hereinafter, referring to the drawings, a grain bag for delivering goods according to one embodiment of the present invention will be described in detail.

As used herein, the term "grain bag" is intended to encompass animal feed such as dogs, chickens, cows, pigs, cats, goats or sheep as well as cereals such as rice, barley, Means an envelope.

As used herein, the term "delivery grain bag" means a grain bag that can be used directly on a courier without being put in a separate packaging box.

FIG. 1 is a perspective view showing a grain bag 100 for delivery according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a part of a body 110 of a delivery grain bag 100 of FIG. 1, FIG. 4 is a cross-sectional view showing a bottom seal part 120 and an adjacent part of the delivery bag 100 of the delivery package 100 of FIG. 1. FIG. 4 is a cross-

Referring first to FIG. 1, a delivery grain bag 100 includes a body 110, a bottom sealing portion 120, and a viewing window 130. Reference symbol IS denotes the inner space of the delivery grain bag 100.

The body 110 is a major part of the delivery grain bag 100.

Referring to FIG. 2, the body 110 includes an envelope layer 111, a paper layer 112, a polyethylene (PE) layer 113, and a linear low density polyethylene (LLDPE) layer 114 in this order .

The envelope layer 111 not only prevents the delivery grain bag 100 from being damaged by scratches, moisture infiltration, or the like, but also functions as a printing layer of a stationery and / or a pattern.

The envelope layer 111 may include oriented polypropylene (OPP). For example, the outer covering layer 111 may be an OPP layer. The OPP has high print sharpness and prevents slippage between a plurality of courier grain bags 100 when they are stacked for storage or transportation, thereby preventing some of the courier grain bags 100 from falling or being damaged or damaged . However, the present invention is not limited thereto, and the outer cover layer 111 may include various other synthetic resins.

The thickness of the envelope layer 111 and the type and / or physical properties of the OPP or other synthetic resin contained therein may be variously adjusted and / or selected depending on the purpose of use.

The paper layer 112 serves to improve the strength of the delivery grain bag 100.

The paper layer 112 may comprise roll paper. The rouge is also referred to as a foodstuff, and various products are commercially available at home and abroad. However, the present invention is not limited thereto, and the paper layer 112 may include various other paper.

The thickness of the paper layer 112 and the type and / or properties of the porcelain or other paper included therein may be variously adjusted and / or selected depending on the intended use.

The PE wrap layer 113 serves to further improve the strength of the delivery grain bag 100.

As used herein, the term " woven sack "refers to a turret consisting of a cloth in the form of a planar body formed by warp and weft crossing over one another.

The PE woven cloth included in the PE woven belt layer 113 is also referred to as PE woven fabric.

The thickness of the PE woven belt layer 113 and the type and / or physical properties of the PE woven band included therein may be variously adjusted and / or selected depending on the purpose of use.

The LLDPE layer 114 further enhances the strength of the delivery grain bag 100 and serves to form the bottom sealing portion 120 by thermal bonding.

The thickness of the LLDPE layer 114 and the type and / or properties of LLDPE (linear low density polyethylene) contained therein may be variously adjusted and / or selected depending on the purpose of use. For example, the LLDPE included in the LLDPE layer 114 may have a molecular weight of 50,000 to 2,000,000 Dalton.

As shown in Figs. 2 to 4, a laminated structure is formed between the outer skin layer 111 and the paper layer 112, between the paper layer 112 and the PE woven belt layer 113, and between the PE woven belt layer 113 and the LLDPE layer An adhesive layer (Al1), an adhesive layer (Al2), and an adhesive layer (Al3) may be respectively disposed.

The material of the adhesive layer A1 may be excellent in adhesion to both the outer layer 111 and the paper layer 112. The material of the adhesive layer A1 may be a paper layer 112 and a PE wrap- And the material of the adhesive layer (Al3) may be one having excellent adhesiveness to both of the PE woven belt layer (113) and the LLDPE layer (114). For example, the adhesive layer (Al1), the adhesive layer (Al2), and the adhesive layer (Al3) may each include PE (polyethylene).

The thicknesses of the adhesive layer (Al1), the adhesive layer (Al2) and the adhesive layer (Al3) may be the minimum thickness capable of obtaining a sufficient adhesive force.

As shown in Figs. 1 to 4, the delivery grain bag 100 may further include a plurality of vent holes h. The plurality of ventilation holes (h) may be uniformly formed throughout the delivery grain bag 100. The plurality of vent holes h may be formed to penetrate the entire body 110, that is, the entirety of the envelope layer 111, the paper layer 112, the PE wrapping layer 113, and the LLDPE layer 114.

1 and 3, the delivery grain bag 100 may further include a transparent window 130 passing through the envelope layer 111, the paper layer 112, and the PE wrapping layer 113. That is, the viewing window 130 passes through the entire body 110 excluding the LLDPE layer 114. [

The PE woven belt layer 113 is woven in a shape similar to that of the fabric. Therefore, in the conventional perforating method such as the method disclosed in Korean Utility Model Registration No. 20-0439390, a very small hole such as a vent hole h may be formed in the PE jacket layer 113, It is virtually impossible to perforate a relatively large hole. Therefore, it has been difficult to form a sight window on a grain bag including a PE roll frame, and it is difficult for the consumer to check the contents or to grasp the freshness of the contents, thereby causing consumer complaints.

A method of forming the transparent window 130 through the PE webbing layer 113 will be described later.

The viewing window 130 may be circular, elliptical or polygonal. The polygon may be triangular, square, pentagonal, hexagonal or octagonal, but the present invention is not limited thereto.

The average diameter of the viewing window 130 may be between 3 and 15 cm.

The average particle diameter of the plurality of vent holes h may be 1/10 to 1/10000 of the average particle diameter of the viewing window 130.

The LLDPE layer 114 may be transparent so that the viewing window 130 can exhibit its original function.

Referring to FIG. 4, the bottom seal 120 may include a junction between opposing ends of the body 110.

The junction may comprise two LLDPE layers 114 bonded together.

Although not shown in FIG. 1, the grain bag 100 may further include a side sealing portion. The side suture part may include a joint part between opposite ends of the body 110 like the bottom seal part 120, and the joint part may include two LLDPE layers 114 bonded to each other.

Since the package 100 for a parcel carrier having the above-described structure is composed of four layers in total, it is excellent in strength and can be used for delivery by itself without putting it in a separate packaging box. In addition, the delivery grain bag 100 has a merit that the manufacturing process is simple and the manufacturing cost is low because it is not necessary to perform the stitching operation for forming the bottom suture portion 120.

Hereinafter, a method of manufacturing the above-mentioned grain bag 100 for delivery will be described in detail.

First, a PE raw material is placed between an outer shell and a paper sheet, followed by thermocompression bonding to produce a first laminate having the outer sheet and the paper attached to each other.

Thereafter, a PE (polyethylene) raw material is disposed between the paper of the first laminate and the PE webbing, and thermocompression is performed to produce a second laminate in which the paper of the first laminate and the PE woven fabric are adhered to each other.

Thereafter, an annular hot wire is brought into contact with the surface of the second laminate, and the second laminate is perforated by heat to form a transparent window.

Thereafter, a PE raw material is disposed between the PE webbing of the second laminate and the LLDPE, followed by thermocompression to produce a third laminate having the PE webbing of the second laminate and the LLDPE adhered to each other.

Thereafter, a plurality of ventilation holes penetrating the entirety of the third laminated body are formed by using the packaging paper manufacturing apparatus described in Korean Utility Model Utility No. 20-0439390.

Finally, the second laminate is folded into a grain bag shape to thermally join the side portions and the bottom portions except for the inlet, thereby completing the delivery grain bag 100 as shown in FIG. 1 to FIG.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: grain bag 110: body
120: bottom sealing portion 130:
111: envelope layer 112: paper layer
113: PE woven belt layer 114: LLDPE layer

Claims (8)

An outer shell layer;
Paper layer;
A PE (polyethylene) sheeting layer consisting of a planar body-like cloth interwoven with warp and wefts crossed below; And
A linear low density polyethylene (LLDPE) layer in this order,
A first PE bonding layer disposed between the sheathing layer and the paper layer, a second PE bonding layer disposed between the paper layer and the PE bonding layer, and a third PE bonding layer disposed between the PE bonding layer and the LLDPE layer, Further comprising an adhesive layer,
Further comprising a viewing window penetrating said sheath layer, said paper layer and said PE webbing layer. The method according to claim 1,
Wherein said shell layer comprises oriented polypropylene (OPP). The method according to claim 1,
Said paper layer comprising roll paper. delete The method according to claim 1,
The LLDPE layer is a transparent grain packing bag. The method according to claim 1,
The delivery grain bag includes a body and a bottom seam, and the bottom seal includes a junction between opposing ends of the body. The method according to claim 6,
Said junction comprising two LLDPE layers bonded together. The method according to claim 1,
Wherein the delivery grain bag further comprises a plurality of air vents.

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