WO2018004257A1 - Bioplastic film, bubble film, and bubble film product using same - Google Patents

Abstract

The present application relates to: a bioplastic film comprising wheat husk which is a food by-product; a bubble film; and a bubble film product using the same.

Description

Bio plastic film, air cap and air cap product using same

The present application relates to a bio plastic film including air by-products such as wheat veins, air caps and air cap products using the same.

Courier packaging is performed to prevent damage to the goods during the courier delivery process. Among the courier packages for clothing, 1) a hanger-type chute case made of non-woven material is used. 2) The primary packaging is made of transparent polyvinyl. 3, the primary packaging with transparent polyvinyl and the opaque polyvinyl packaging are widely used.

In particular, the method of packaging in a hanger-type chute case using non-woven material is mainly used in the case of clothes which should not be wrinkled, such as a coat or a crystal, and is packaged and transported in the form of a hanger-type chute case. In this packaging method, the PET-based non-woven material is processed in the form of a chute case as a packaging material, and then the outer packaging is completed by attaching a transparent film for easy identification of clothing and attachment of a waybill.

And 2) packaging in a box or 3) packaging in opaque polyvinyl, which can be used for garments that are not easily wrinkled. It is cheaper than 60% cheaper than 2) packing in box or 3) packing in opaque polyvinyl.

However, as the purchase of goods online has soared recently, the courier market for delivering purchased goods has also increased, and the use of courier packaging materials has also increased exponentially. Specifically, in Korean Patent Laid-Open Publication No. 10-2016-0029271, a flat film and an embossing film are made of a low density polyethylene film, and Korean Utility Model Publication No. 20-2013-0006038 forms embossing with low density ethylene. Conventional courier packaging materials are made of petroleum-derived plastic products, such as a base sheet film that is flatly molded with high density polyethylene on one surface of an embossed cap sheet. Incineration and landfill cause toxic gas, which causes air pollution, shortage of landfill space, and environmental pollution.

In order to solve these problems, there have been attempts to develop and utilize plastic compositions using plant-derived by-products, but there are problems in that physical properties such as elongation and tensile strength are deteriorated compared to conventional plastic compositions, and problems in which existing facilities cannot be used. .

Therefore, until now, there has been a need for a bioplastic film and an air cap product using the same, which do not degrade physical properties while solving the problem of environmental pollution.

[Preceding technical literature]

(Patent Document 1) KR10-2016-0029271 A1

(Patent Document 2) KR20-2013-0006038 U1

The present application aims to provide a bioplastic film and an air cap in which physical properties are not deteriorated as compared to conventional petroleum-derived plastic products as a plastic composition using a plant-derived by-product to solve the problem of environmental pollution.

In addition, the present application aims to provide an air cap product using the air cap and the material.

The present application provides a bioplastic film including a first polyolefin-based resin, a wheat vein-containing composition, and a dehumidifying agent in order to solve the above problems.

The first polyolefin-based resin may be at least one selected from polyethylene (PE), polypropylene (PP), polybutylene, and polymethylpentene, and preferably, polyethylene (PE). The polyethylene (PE) may be at least one selected from linear low density polyethylene (LLDPE), low density polyethylene (LDPE), and high density polyethylene (HDPE). The first polyolefin-based resin may include 85 to 95% by weight based on the total weight of the bioplastic film. Except for the type and range described above, the physical properties of the bioplastic film are uneven.

In addition, the wheat vein-containing composition may include 2 to 8% by weight based on the total weight of the bioplastic film, and the wheat vein-containing composition may contain a second polyolefin-based resin, wheat vein, wax, inorganic filler, and surfactant.

Specifically, the second polyolefin-based resin may be at least one selected from polyethylene (PE), polypropylene (PP), polybutylene and polymethylpentene, preferably at least one selected from polyethylene (PE) and polypropylene (PP). It may be, and most preferably may be polyethylene (PE). More specifically, the polyethylene may be at least one selected from linear low density polyethylene (LLDPE), low density polyethylene (LDPE) and high density polyethylene (HDPE). Also,

The polyethylene may be reacted under one or more catalysts selected from a metallocene catalyst and a Zieggler-Natta catalyst, but may preferably be a metallocene catalyst. Unlike the Ziegler-Natta catalyst, the metallocene catalyst has a single active point, and precisely controls the polymer structure by the single active point catalyst technology, thereby freely implementing a specific synthesis process. In particular, M-PE refers to PE synthesized using a metallocene catalyst. M-PE has better processability and quality than other PE.

In addition, the second polyolefin-based resin may be included 40 to 70% by weight based on the total weight of the wheat vein-containing composition. If less than 40% by weight of the composition may not be easy to mix, there is a problem in the physical properties of the film is uneven. If more than 70% by weight, the intrinsic color of wheat in the composition is not maintained, and the carbon reduction effect is insignificant. However, the composition of the present invention may include the polyolefin resin of the above range, the composition is maintained while the intrinsic color of the wheat bubbles do not occur when manufacturing the film, it can provide the same appearance, quality as the conventional plastic film.

On the other hand, the wheat vein may be a by-product remaining after the production of flour in biomass. Specifically, the size of the wheat vein may be 5 ~ 30mm, preferably 10 ~ 25mm. If the size is smaller than the above-mentioned range of wheat vein, there is a problem that the workability worsens due to the blown off powder and the yield falls. If it is larger than the range, the melt index (MI) of the composition is increased, so that the hardness of the pellets prepared with the composition is not constant, and the film processability is low when the film is manufactured using the film, and holes are generated, or the film properties (sealing strength, Deviation in tensile strength, elongation, etc.).

And the particle uniformity PDI (polydipersity index) value of the wheat vein may be 2 or less, preferably 1.5 or less. PDI represents particle uniformity and can be expressed as the standard deviation of the diameter / square of the mean of the diameters. If the uniformity of the wheat size is above the above range, the physical properties of the wheat-containing composition may be uneven, and the dispersibility may be deteriorated.

In addition, the wheat vein may have a water content of 1 to 10%. If it is lower than the range of water content of the wheat flour, the wheat flour processing process is inefficient, and if it is larger than the range, the physical properties of the prepared composition are bad, and the film processing degree is lowered.

The wheat vein may be included 10 to 30% by weight based on the total weight of the wheat vein-containing composition. If less than the above range may not express the unique color of the wheat flour in the wheat flour-containing composition, in the case of more than the range of fine wheat flour may contain air bubbles aggregated during the manufacturing process of the wheat flour containing composition When the bioplastic film is manufactured with the containing composition, holes are generated, or the physical properties (sealing strength, tensile strength, elongation, etc.) of the manufactured bioplastic film are inferior. However, the wheat vein-containing composition of the present invention is included in the wheat vein of the above range, the color of the wheat as a unique expression of the bioplastic film does not generate bubbles, it can provide the same physical properties and quality as conventional oil-derived film. .

The wax serves to connect the wheat flour and the polyolefin resin, and may be any one or more selected from paraffin wax, liquid paraffin wax, beeswax, mold wax, candelilla wax, polyethylene wax, and polypropylene wax, but is not limited thereto. Preferably, polyethylene wax is used, and more preferably, one or two selected from low density polyethylene wax (LDPE WAX) and high density polyethylene wax (HDPE WAX) are mixed and used. The wax may be included 10 to 20% by weight based on the total weight of the wheat vein-containing composition.

The inorganic filler may be at least one selected from the group consisting of calcium carbonate, silica, mica and talc, but is not limited thereto, and preferably, inexpensive calcium carbonate (CaCO ₃ ) is used. The inorganic filler may be included 5 to 20% by weight based on the total weight of the wheat vein-containing composition. If it is included in less than the above ranges may be lowered physical properties and production costs, and if it is included in more than the above ranges may be poor properties of the composition containing the bio-film and bioplastic film.

The surfactant of the present invention coats the surface of the wheat and makes it possible to mix well with wax or polyolefin and serves to prevent the wheat from burning. The surfactants include fatty acids such as stearic acid, myristic acid, palmitic acid, arachidic acid, oleic acid, linolenic acid and cured fatty acid, glycerin, butylene glycol, propylene glycol, dipropylene glycol, pentylene glycol, hexylene glycol, polyethylene At least one selected from polyol series such as glycol and sorbitol, but is not limited thereto. The surfactant may be included 0.5 to 5% by weight based on the total weight of the wheat vein-containing composition. When the surfactant is less than 0.5% by weight, the effect of the surfactant is insignificant, and when it exceeds 5% by weight, the properties of the bioplastic film such as tensile strength are deteriorated.

The dehumidifying agent may be zeolite, silica gel, activated alumina, or the like, without limitation. The dehumidifying agent may inhibit the bubble formation during film production by absorbing moisture in the wheat vein-containing composition. In particular, when molding the bioplastic film into the air cap, it is necessary to suppress the generation of bubbles by adding a dehumidifying agent so that a defect does not occur. The dehumidifying agent may include 3 to 8 wt% based on the total weight of the biofilm. When the dehumidifier is used in less than the above range, the function of the additive is not expressed, and when the dehumidifier is used in more than the range, the physical properties of the bioplastic film may not be maintained.

The bioplastic film may have physical properties that can replace the conventional petroleum derived plastic film. Specifically, the sealing strength of the bioplastic film is 0.7 ~ 1.0kgf and the sting strength may be 0.13 ~ 0.19kgf.

In addition, the bioplastic film is 1) mixing the composition containing the wheat flour in the first polyolefin resin, 2) further mixing the dehumidifying agent and 3) to discharge the mixture to the tee die equipment to produce a bioplastic film It may be prepared by a bio plastic film manufacturing method comprising the step of.

And the present application provides an air cap comprising the bio plastic film.

The air cap may have a sealing strength of 1.5 to 2.1 kgf and a pressure resistance of 0.05 to 0.07 kgf.

In addition, the air cap is 1) mixing the composition containing the wheat flour in the first polyolefin resin, 2) further mixing the dehumidifying agent, 3) to discharge the mixture to the tee die equipment to produce a bioplastic film Step and 4) the bioplastic film may be produced by an air cap manufacturing method comprising the step of forming an air cap. Specifically, in the forming of the air cap, the air cap 110 may be manufactured in such a manner that the first bio plastic film 111 and the second bio plastic film 112 pass through the air cap forming roll at the same time (FIG. 5). Reference).

In addition, the present application provides an air cap product 100 in which the air cap 110 and the subsidiary material 130 are laminated.

The submaterial 130 may include at least one submaterial selected from paper, film, foam, and nonwoven fabric. Specifically, the paper may be kraft paper, hanji, or polyethylene coated kraft paper or hanji, and the film may be nylon, cellophane, cellulose, ethylene vinyl acetate, polyvinyl chloride, polyvinylidene chloride, polycarbonate, polyamide, poly Vinyl alcohol, polyurethane, acrylic resin, polyethylene terephthalate, polyethylene, polypropylene, polybutylene, polymethyl pentene may be selected from one of the printed film. The foam may be polyurethane, polystyrene, phenol resin, polyvinyl chloride, polyethylene, polypropylene, polybutylene, polymethylpentene and the nonwoven fabric is polyethylene, polypropylene, polybutylene, polymethylpentene, polyethylene tere It may be one selected from phthalates, but is not limited thereto.

The air cap 110 and the member material 130 may be laminated by an adhesive layer 120 formed of an adhesive material. Specifically, the pressure-sensitive adhesive material may use a known pressure-sensitive adhesive.

And it can be used as a packaging material, wallpaper, flooring, mat, insulation cover, interior materials, moldings, coatings by using the function of the cushion, insulation, sound insulation of the air cap product. Specifically, it can be used as a packaging material in packaging bags, packaging boxes, as mats, as rugs, and as clothing, as a selected one of clothing, socks and hats.

As an example of the air cap product of the present application, when the kraft paper or polyethylene coated kraft paper is used as the material of the air cap product, it may be a garment packaging for kraft air cap delivery (see FIG. 7A). Kraft paper can replace the box packaging because the air cap absorbs the shock as a cushioning material while withstanding the shock during delivery. In addition, the cushioning material can be manufactured to maintain the packaging form and can be transported in the form of a hanger, so that wrinkles can be prevented and can be manufactured 30% cheaper than a conventional nonwoven suitcase.

As another example, using hanji or polyethylene coated hanji as an ingredient of the aircap product, it can be a garment packaging for hanji aircap parcel delivery (see Figure 7b). If Hanji is used as a subsidiary material, the luxurious image of Hanji can provide a high quality courier packaging, and the air cap absorbs the impact strength that may occur during distribution as a cushioning material, thereby replacing a box or an opaque plastic bag packaging. Furthermore, the cushioning material can be unfolded and transported in the form of a hanger to maintain the packaging form, thereby preventing wrinkles of clothes and can be manufactured at 20% cheaper than the conventional nonwoven suitcase.

As another example, using the printed film as a material of the air cap product, it can be a garment packaging for air cap delivery to maintain the shape (see Figure 7c). It can be promoted by printed contents on the surface, and it is suitable for courier packaging because it is light in weight, and the air cap absorbs the impact strength that may occur during distribution as a cushioning material, and thus can be replaced with an opaque plastic bag packaging. Furthermore, the cushioning material can be unfolded and transported in the form of a hanger to maintain the packaging form, thereby preventing wrinkles and can be manufactured at 40% cheaper than conventional nonwoven suitcases.

In another example, when the foam is used as a material of the air cap product, a shape of the garment packaging for air cap delivery is maintained (see FIG. 7D). When the cushioning material is manufactured, it is formed as a double cap instead of a single cap (see FIG. 4), and the surface printing is possible, and the foam foam forms a layer inward, so that the shock absorber and the foam foam absorb the impact strength that may occur during distribution. Can replace clothing packaging. Since the cushioning material and the foam foam are kept in the packaging form, the clothes can be unfolded and transported in the form of hangers, which prevents the wrinkles of clothes and the effect of preventing the wrinkles of the clothes is obvious, but 5 to 10% cheaper than the existing nonwoven suitcase. Can be prepared.

The air cap product may be manufactured by a manufacturing method of manufacturing the air cap product 100 by laminating the adhesive layer 120 and the material 130 formed of the adhesive material on the air cap 110. The lamination may be a known method, but in particular, if the subsidiary material is kraft paper or Hanji, it may be thermal lamination, when the subsidiary material is a film, dry lamination may be used, and when the subsidiary material is a foam, it may be a low temperature lamination (FIG. 5).

According to the present application, it is possible to reduce the carbon by using a small amount of petroleum-based plastic material, and since the physical properties are not deteriorated compared to conventional petroleum-derived plastic products, it can be produced using existing equipment, and bioplastic film having a unique color of wheat. It is effective to provide an air cap that can replace the existing air cap.

And according to the present application to replace the conventional petroleum-derived air cap product has a cushioning, insulation, sound insulation effect packaging materials (packaging bags, packaging boxes), wallpaper, flooring, mats (carpets), thermal insulation cover, interior materials, moldings, coatings ( It can be used for clothing, socks, and hats), and it is effective to provide air cap products that can reduce environmental pollution.

1 is a flowchart illustrating a process of manufacturing a bioplastic film and an air cap of the present application.

Figure 2 is a photograph comparing the air cap (left) of the present application and the air cap (right) made of conventional polyethylene.

3 is a cross-sectional view showing an air cap product of the present application.

Figure 4 shows an example of manufacturing the air cap product of the present application in a hanger type chute case.

Figure 5 shows the manufacturing process of the air cap product of the present application.

6 compares a cross-sectional view of a single cap with a cross-sectional view of a double cap.

Figure 7 is a photograph showing the air cap product of Examples 7 to 10, Figure 7a shows an air cap product using polyethylene coated kraft paper as a material, Figure 7b is an air cap product using polyethylene coated paper as a material 7C shows an air cap product using a printing film as a component material, and FIG. 7D shows an air cap product using a foam foam as a component material.

The present application will be described in more detail with reference to the following examples. Since the embodiments disclose only one example of the present application, the scope of the present application is not limited to the scope of the embodiments.

<Example>

1. Examples 1 and 2: Preparation of Compositions Containing Wheatgrass

It is automatically dried by controlling the motor of the blade at 100 ~ 200RPM in the ACM grinder and grinding the moisture content to 7% or less and classifying the pulverized fine particles to produce powder with 15㎛, PDI = 1 and then 15㎛, PDI = 15% by weight of wheat flour per person, 60% by weight polyethylene (PE) in pellet or powder form, 10% by weight calcium carbonate as filler, 14% by weight wax (6% by weight LDPE and 8% by weight HDPE) and 1% surfactant The temperature was controlled to prevent the burnt wheat from 160 ° C to 200 ° C, and the mixture was heated and mixed to prepare a composition containing the wheatweed of Example 1.

In addition, in the same manufacturing method as in Example 1 25% by weight of the wheat flour and 50% by weight of polyethylene (PE) in the form of pellets or powder to prepare a composition containing the wheat vein of Example 2.

2. Examples 3 and 4: Preparation of Dehumidifier-Containing Bioplastic Film

70 wt% polyethylene (60 wt% LLDPE and 10 wt% LDPE) of the pellet prepared from the vegetal-containing composition of Example 2 was mixed, followed by further mixing 5% by weight of the desiccant with respect to the total weight of the mixture and performing film molding. The bioplastic film of Example 3 was prepared.

In the same method as the bioplastic film of Example 3, the bioplastic film of Example 4 was prepared by mixing and film molding without using a dehumidifying agent.

3. Experimental Example 1: Comparison of Physical Properties of Dehumidifier-Containing Bioplastic Film

In order to confirm the availability of the air cap of the bio plastic film having a different dehumidifier content, the sealing strength and the puncture strength were confirmed, and the results are shown in Table 1.

Comparison of Properties of Bioplastic Films According to Dehumidifier Content

	Example 3	Example 4
Dehumidifier content	5 wt%	0
Sealing strength (kgf)	0.8936	0.9832
Sting strength (kfg)	0.15	0.1618

As shown in Table 1, when 5% by weight of the dehumidifier is included, the sealing strength is lowered by 9% and the puncture strength is lowered by 7.3% than otherwise, but the bioplastic film including the dehumidifying agent of the present application is also suitable to be manufactured and used as an air cap. It has been shown that it can provide an air cap that can reduce the carbon and control the environment within the packaging.

4. Examples 5 and 6: Preparation of Air Cap

The bioplastic films of Examples 3 and 4 were attached to other bioplastic films while passing through a forming roll to form an air cap, and then cooled to prepare the air caps of Examples 5 and 6.

5. Comparative Example 1: Preparation of existing petroleum product derived air cap

In the same manufacturing method as in Example 5, 95% by weight of polyethylene alone and 5% by weight of a dehumidifying agent were mixed without using a composition containing wheat vegetation to prepare an air cap.

6. Experimental Example 3: Comparison of existing air cap and air cap properties of the present application

In order to confirm whether the air cap of the present application can replace the existing petroleum product derived air cap, the sealing strength and the pressure resistance strength of the air caps of Examples 5 and 6 and Comparative Example 1 were measured, and the results are shown in Table 3. It was.

Comparison of existing air cap and air cap properties of this application

	Comparative Example 1	Example 5	Example 6
Sealing strength (kgf)	2.065	1.721	1.564
Pressure strength (Mpa)	0.068	0.063	0.059

The sealing strength and the pressure resistance strength of the air cap of the present application were slightly reduced compared to that of the conventional petroleum-derived plastic film, but it was confirmed that the range of physical properties usable as the air cap.

7. Example  7 to 10: Air cap  Manufacture of products

An air cap product was manufactured by laminating an adhesive material and a material on the air cap of Example 5. Specifically, the air cap products of Examples 7 and 8 were prepared by using polyethylene-coated kraft paper and polyethylene-coated hanji as the subsidiary materials (FIGS. 7A and B), and using a printing film as a subsidiary material and performing dry lamination. The air cap product of Example 9 was prepared (FIG. 7C), and the air cap product of Example 10 was prepared by using low temperature lamination and foam foam as a component (FIG. 7D).

It was confirmed that the air cap products of Examples 7 to 10 can be manufactured at 5 to 40% cheaper than the conventional nonwoven suit case, maintain the packaging form through the air cap and absorb shocks that may occur during distribution.

[Description of the code]

100: Air Cap Products

110: air cap

111: first bioplastic film

112: second bioplastic film

120: adhesive layer

130: Subsidy

Claims (12)

1. A bioplastic film comprising a first polyolefin-based resin, a wheat vein-containing composition, and a dehumidifying agent.
2. The method of claim 1,

   The first polyolefin-based resin is at least one selected from polyethylene (PE), polypropylene (PP), polybutylene and polymethylpentene.
3. The method of claim 1,

   The first polyolefin-based resin is a bioplastic film containing 85 to 95% by weight based on the total weight of the bioplastic film.
4. The method of claim 1,

   The biomembrane-containing composition is a bioplastic film that contains 2 to 8 wt% based on the total weight of the bioplastic film.
5. The method of claim 1,

   The wheat vein-containing composition is a bio-plastic film containing a second polyolefin resin, wheat vein, wax, inorganic filler and surfactant.
6. The method of claim 6,

   The wheat vein is 5 ~ 30чm, PDI 2 or less of the bioplastic film containing 10 to 30% by weight based on the total weight of the composition containing the wheat flour.
7. The method of claim 1,

   The dehumidifying agent is a bioplastic film which is at least one selected from zeolite, silica gel and activated alumina.
8. The method of claim 1,

   The dehumidifying agent is a bioplastic film that contains 3 to 8 wt% based on the total weight of the bioplastic film.
9. An air cap comprising the bioplastic film of claim 1.
10. An air cap product in which the air cap and the subsidiary material of claim 9 are laminated.
11. The method of claim 10,

    The submaterial is any one or more selected from paper, film, foam foam, non-woven fabric.
12. The method of claim 10,

    Use of the air cap product is an air cap product is a packaging material, wallpaper, flooring, mats, thermal cover, interior materials, moldings or coatings.

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