KR20080097053A - Manufacturing method for packing film - Google Patents

Manufacturing method for packing film Download PDF

Info

Publication number
KR20080097053A
KR20080097053A KR1020070042148A KR20070042148A KR20080097053A KR 20080097053 A KR20080097053 A KR 20080097053A KR 1020070042148 A KR1020070042148 A KR 1020070042148A KR 20070042148 A KR20070042148 A KR 20070042148A KR 20080097053 A KR20080097053 A KR 20080097053A
Authority
KR
South Korea
Prior art keywords
density polyethylene
low density
polypropylene
ldpe
linear low
Prior art date
Application number
KR1020070042148A
Other languages
Korean (ko)
Other versions
KR100903931B1 (en
Inventor
김정수
Original Assignee
대정화학공업주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대정화학공업주식회사 filed Critical 대정화학공업주식회사
Priority to KR1020070042148A priority Critical patent/KR100903931B1/en
Publication of KR20080097053A publication Critical patent/KR20080097053A/en
Application granted granted Critical
Publication of KR100903931B1 publication Critical patent/KR100903931B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2223/00—Use of polyalkenes or derivatives thereof as reinforcement
    • B29K2223/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/16—Ethene-propene or ethene-propene-diene copolymers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

A manufacturing method for a packing stretch film is provided to manufacture a packing film with excellent transparency, soft texture and slip property by attaching a polyethylene material and a polypropylene material. A packing stretch film is produced by injecting a polypropylene, a low density polyethylene (LDPE) and a linear low density polyethylene in a hopper(56) equipped in the normal laminator(55); melting them through the screw(57) and passing through a dice(58); winding the melted one in a roll type after passing through a cooling roller(59). The packing stretch film comprises an outer layer of a polypropylene material, an intermediate layer consisting of a low density polyethylene (LDPE) which is a polyethylene material, and an internal layer consisting of a linear low density polyethylene which is a polyethylene material. The amount of polypropylene, low density polyethylene and linear low density polyethylene, supplied each hopper is respective 30%±10%, 40%±10% and 30%±10% based on the total weight. The temperature of polypropylene, low density polyethylene and linear low density polyethylene when passing through the dice is 160~180deg.C in case of the polypropylene, and is 180~200deg.C in case of The low density polyethylene and linear low density polyethylene, and the dice is maintained at 200-215deg.C.

Description

포장용 스트레치 필름 제조방법{MANUFACTURING METHOD FOR PACKING FILM}Manufacturing method of stretch film for packaging {MANUFACTURING METHOD FOR PACKING FILM}

도 1은 본 발명의 기술인 포장용 스트레치 필름의 제조과정을 설명하기 위하여 도시한 과정도.1 is a process diagram shown to explain the manufacturing process of the packaging stretch film of the present invention.

도 2는 본 발명에 의하여 제조된 포장용 스트레치 필름을 발췌하여 도시한 단면도.Figure 2 is a cross-sectional view showing an extract of the packaging stretch film prepared according to the present invention.

*도면의 주요 부분에 사용된 부호의 설명** Description of the symbols used in the main parts of the drawings *

50; 필름50; film

51; 외층51; Outer layer

52; 중층52; Middle layer

53; 내층53; Inner layer

본 발명은 포장용 스트레치 필름 제조방법에 관한 것으로서 더욱 상세하게는 투명도가 높으면서 미끄럼성이 우수하여 포장의 용이성을 제공할 수 있는 새로운 필름의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a stretch film for packaging, and more particularly, to a method for manufacturing a new film that can provide ease of packaging with high transparency and high slipperiness.

통상적으로 제품의 포장용으로 사용되는 필름은 통상적으로 제품의 포장용으 로 사용되는 필름은 PE재질(Polyethylene)의 것을 많이 사용하고 있으며, 이러한 폴리에틸렌은 재활용이 가능하고 신장율 및 인장력이 뛰어난 특성을 가지고 있다.Typically, the film used for the packaging of the product is usually used for the packaging of the product is a PE material (polyethylene) that is used a lot, such polyethylene is recyclable and has excellent properties of elongation and tensile strength.

상기와 같은 폴리에틸렌을 이용한 포장의 종류로는 의류, 섬유(직물)의 포장, 식품포장, 다양한 종류의 산업물품 포장에 주로 사용되고 있으며, 포장용은 아니나 쓰레기 종량제봉투와 비닐하우스용 등에도 광범위하게 사용되고 있는 실정이다.As the type of packaging using polyethylene as described above, it is mainly used for packing clothes, textiles (fabrics), food packaging, and packing various kinds of industrial items, and is not widely used for packaging, but also widely used for garbage-based bags and plastic houses. It is true.

상기 폴리에틸렌 외에도 포장용도로 사용되고 있는 것이 PP재질(Polypropylene)이 사용되고 있으며, 상기 폴리프로필렌의 경우에는 투명도가 좋은 특성을 가지고 있다.In addition to the polyethylene, the PP material (Polypropylene) is used for packaging purposes, and the polypropylene has good transparency.

상기 폴리프로필렌의 경우 포장용으로 사용시 포장완료된 제품을 시각적으로 확인 가능하기 때문에 제품의 특성을 그대로 살릴 수 있는 장점을 가지고 있어 제품을 외부에서 식별할 수 있는 원단제품 등의 포장에 많이 사용된다.In the case of the polypropylene, when the packaging is used for packaging, it is possible to visually check the finished product, and thus has the advantage of keeping the characteristics of the product as it is, and is used for the packaging of fabric products such as products that can be identified from the outside.

상기와 같은 폴리에틸렌(PE)은 유연성은 뛰어나고 미세한 상처에 강하고, 포장한 상태에서 제품을 적층 하더라도 미끄럼성이 우수하여 쉽게 제품을 슬라이딩 타입으로 상,하역 가능한 특성은 있으나 투명도가 우수하지 못하여 포장한 상태에서 제품의 특성을 시각적으로 제대로 표현할 수 없는 단점이 있다.Polyethylene (PE) as described above is excellent in flexibility and resistant to minute wounds, and even when laminated in the packaged state, the product is easily slipped because of its sliding property. The disadvantage of not being able to express the characteristics of the product properly visually.

상기 폴리프로필렌(PP)은 투명성이 뛰어나 포장된 제품을 시각적으로 우수하게 표현할 수 있는 장점은 있으나, 작은 상처에도 쉽게 찢어지는 성질 때문에 폭 넓은 범위의 포장용으로 사용되지 못하고 있고, 미끄럼성이 좋지 못하기 때문에 제품을 포장한 상태에서 상,하역시 마찰에 의하여 쉽게 포장상태가 손상되는 등 여러 문제점이 발생하고 있는 실정이다.The polypropylene (PP) is excellent in transparency and has the advantage of expressing the packaged product visually excellent, but because it is easily torn even in small wounds, it is not used for a wide range of packaging, it is not slippery Therefore, there are various problems such as damage to the packaging state due to friction during loading and unloading in the state of packaging the product.

그리고, 폴리에틸렌과 폴리프로필렌을 합지시켜 하나의 필름으로 만들려고 하여도 용융점의 차이로 인하여 합지할 수 없기 때문에 각각 독립된 상태로 용도와 제품에 맞게 포장용으로 사용되고 있는 것이다.In addition, even if polyethylene and polypropylene are laminated to make a single film, they cannot be laminated due to differences in melting points, so that they are used for packaging according to uses and products in separate states.

이에 본 발명에서는 상기와 같은 문제점들을 해결하기 위하여 발명한 것으로서 통상적으로 필름을 다겹(다층)으로 합지하기 위한 합지기를 이용하여 폴리에틸렌(PE) 재질과 폴리프로필렌(PP) 재질을 합지시켜 투명도가 우수하면서 부드럽고 미끄럼성이 좋은 포장용 필름을 제조하도록 함으로서 다양하고 광범위한 포장용 필름지를 제공하여 제품의 상품성을 높일 수 있는 필름을 제공하고자 하는 데 가장 큰 목적이 있다.In the present invention, in order to solve the problems as described above, by using a lamination for laminating the film in multiple layers (multi-layer), the polyethylene (PE) material and polypropylene (PP) material is laminated to excellent transparency The purpose of the present invention is to provide a film that can increase the merchandise of a product by providing a wide variety of packaging film by making a soft and slippery packaging film.

이하 첨부되는 도면과 관련하여 상기 목적을 달성하기 위한 본 발명의 바람직한 제조예를 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings illustrating a preferred manufacturing example of the present invention for achieving the above object.

도 1은 본 발명의 기술인 포장용 스트레치 필름의 제조과정을 설명하기 위하여 도시한 과정도, 도 2는 본 발명에 의하여 제조된 포장용 스트레치 필름을 발췌하여 도시한 단면도로서 함께 설명한다.Figure 1 is a process diagram shown to explain the manufacturing process of the packaging stretch film of the technology of the present invention, Figure 2 will be described together as a cross-sectional view showing an extract of the packaging stretch film produced by the present invention.

본 발명의 기술이 적용되는 포장용 스트레치 필름(50)은 폴리프로필렌(PP) 재질의 외층(51)과 폴리에틸렌(PE) 재질인 저밀도폴리에틸렌(Low Density Polyethtlene; LDPE)으로 구성되는 중층(52)과 역시 폴리에틸렌(PE) 재질인 선형저 밀도폴리에틸렌(Liner Low Density Polyethtlene; LLDPE)으로 구성되는 내층(53)의 3중 구성으로 제조하여 폴리프로필렌(PP)과 폴리에틸렌(PE) 재질의 장점인 투명성과 부드러움 및 미끄럼성이 향상된 포장용 필름(50)을 제공하는 것을 특징으로 한다.Packaging stretch film 50 to which the technique of the present invention is applied is a middle layer 52 consisting of an outer layer 51 of polypropylene (PP) material and low density polyethylene (Low Density Polyethtlene (LDPE)) of polyethylene (PE) and also It is manufactured by triple composition of inner layer 53 composed of linear low density polyethtlene (LLDPE), which is a polyethylene (PE) material. It is characterized by providing a packaging film 50 with improved slipperiness.

상기 포장용 스트레치 필름(50)의 제조는 통상적인 합지기(55)의 독립하여 구비되는 호퍼(56)에 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)를 각각 투입하여 스크류(57)를 통하여 용융시켜 다이스(58)를 통과시킨 후 냉각로울러(59)를 경유한 후 롤 타입으로 권취(60) 함으로서 합지된 상태로 제조한다.The packaging stretch film 50 is manufactured by injecting polypropylene (PP), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) into a hopper 56 which is provided independently of a conventional paper machine 55, respectively. It melts through 57, passes through the die 58, passes through the cooling roller 59, and winds up the roll 60 to produce a laminated state.

상기 각각의 호퍼(56)에 공급하는 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)의 양은 전체 중량에 대하여 각각 30％와 40％ 및 30％를 기본 비율로 하고, 여기에 약 ±10％의 비율로 각각의 재료가 가감될 수 있음은 당연할 것이다.The amounts of polypropylene (PP), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) supplied to the respective hoppers 56 are 30%, 40%, and 30% based on the total weight, respectively. It will be appreciated that each material may be added or subtracted at a rate of about ± 10%.

상기와 같이 공급된 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)이 스크류(57)에 의하여 용융되어 다이스(58)에 구비되는 독립되게 각각 구비되는 압출홀(61)을 통과할 때 폴리프로필렌(PP)의 온도는 160∼180℃를, 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)은 180∼200℃의 온도를 유지하고 다이스(58)는 200∼215℃를 유지시켜 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)이 정상적인 온도를 유지할 수 있도록 한다.Polypropylene (PP), Low Density Polyethylene (LDPE) and Linear Low Density Polyethylene (LLDPE) supplied as described above are melted by a screw 57 and are provided separately from each of the extrusion holes 61 provided in the die 58. When passing through, the temperature of the polypropylene (PP) is maintained at 160 to 180 ° C., the low density polyethylene (LDPE) and the linear low density polyethylene (LLDPE) are maintained at a temperature of 180 to 200 ° C., and the die 58 is maintained at 200 to 215 ° C. Polypropylene (PP), low density polyethylene (LDPE), and linear low density polyethylene (LLDPE) can maintain normal temperatures.

물론, 상기 다이스(58)의 압출홀(61)을 통과하면서 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)이 각각 외층(51)과 중층(52) 및 외측(53)의 3중 구조로 합지될 때, 중층(52)과 내층(53)을 구성하는 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)이 수축되면서 주름이 생기는 것을 방지할 수 있도록 합지되는 가장자리에 상온의 공기를 분사하는 것이 바람직하다.Of course, the polypropylene (PP), the low density polyethylene (LDPE), and the linear low density polyethylene (LLDPE) form the outer layer 51, the middle layer 52, and the outer 53, respectively, while passing through the extrusion hole 61 of the die 58. When laminated in a triple structure of low-temperature polyethylene (LDPE) and linear low-density polyethylene (LLDPE) constituting the middle layer 52 and the inner layer 53 of the room temperature at the edge to be laminated so as to prevent the formation of wrinkles It is preferable to inject air.

상기와 같이 제조된 포장용 스트레치 필름(50)은,Packaging stretch film 50 prepared as described above,

투명성이 우수한 특성을 가지는 폴리프로필렌(PP)과 부드러우면서도 미끄럼성이 좋은 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)이 3층구조로 합지되어 각각의 장점이 부각된 상태의 필름(50)이 완성되므로 상기 필름(50)을 이용하여 포장을 수행할 경우 하기와 같은 장점을 가진다.Polypropylene (PP), which has excellent transparency, and low density polyethylene (LDPE) and linear low density polyethylene (LLDPE), which are soft and slippery, are laminated in a three-layered structure, and the film 50 has its advantages. Since this is completed, when the packaging using the film 50 has the following advantages.

투명성이 우수함으로서 포장된 제품이 외부로 그대로 드러나기 때문에 포장된 제품을 포장하지 않은 상태에서 보는 것과 같으므로 시인성과 식별성 및 제품의 표현성이 탁월하게 된다.Because of the high transparency, the packaged product is exposed to the outside, which is the same as seeing the packaged product without packaging, thereby providing excellent visibility, discrimination, and expression of the product.

그리고, 높은 인장강도를 유지하므로서 제품을 포장하는 과정이나 포장완료된 후 상,하역하는 과정에서 필름(50)이 손상되는 현상이 없고, 강한 실링(Sealing)성으로 인하여 필름(50)의 접착부분이 찢어지거나 손상되는 현상이 없으며, 필름(50)의 표면에 먼지와 같은 이물질이 쉽게 흡착되는 것이 방지되는 장점을 가진다.In addition, the film 50 is not damaged in the process of packaging the product or the loading and unloading process after the packaging is completed while maintaining a high tensile strength, and the adhesive part of the film 50 is formed due to the strong sealing property. There is no tearing or damage, and foreign matters such as dust are easily adsorbed on the surface of the film 50.

이상과 같은 본 발명은 통상적으로 필름을 합지기를 이용하여 다겹(다층 또 는 다중)으로 합지하여 폴리에틸렌(PE) 재질과 폴리프로필렌(PP) 재질을 합지시켜 투명도가 우수하면서 부드럽고 미끄럼성이 좋은 포장용 필름을 제조하도록 함으로서 다양하고 광범위한 제품의 포장이 가능하면서 포장된 제품의 상품성을 높일 수 있는 등 기대되는 효과가 많은 발명이다.In the present invention as described above, the film is laminated in multiple layers (multi-layers or multiples) using a laminating film to laminate a polyethylene (PE) material and a polypropylene (PP) material, thereby providing excellent transparency and good slipperiness. By manufacturing a variety of products can be packaged while a wide range of products, such as to increase the commerciality of the packaged products is expected many effects.

Claims (2)

통상적인 합지기(55)에 구비되는 호퍼(56)에 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)를 각각 투입하여 스크류(57)를 통하여 용융시켜 다이스(58)를 통과시킨 후 냉각로울러(59)를 경유한 후 롤 타입으로 권취(60)하여;Polypropylene (PP), low density polyethylene (LDPE), and linear low density polyethylene (LLDPE) are introduced into the hopper 56 provided in the conventional papermaking machine 55, respectively, and melted through the screw 57 to form a die 58. After passing through the cooling roller 59, and wound in a roll type (60); 폴리프로필렌(PP) 재질의 외층(51)과;An outer layer 51 made of polypropylene (PP); 폴리에틸렌(PE) 재질인 저밀도폴리에틸렌(LDPE)으로 구성되는 중층(52)과;A middle layer 52 made of low density polyethylene (LDPE) made of polyethylene (PE); 폴리에틸렌(PE) 재질인 선형저밀도폴리에틸렌(LLDPE)으로 구성되는 내층(53)의 3중 구성으로 제조하여 투명성과 부드러움 및 미끄럼성이 향상된 포장용 필름(50)을 제조함에 있어서;In the manufacturing of the packaging film 50, which is made of a triple configuration of the inner layer 53 composed of linear low density polyethylene (LLDPE) of polyethylene (PE) material is improved transparency, softness and slippery; 상기 각각의 호퍼(56)에 공급하는 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)의 양은 전체 중량에 대하여 각각 30％ ±10％와 40％ ±10％ 및 30％ ±10％의 비율로 공급하고;The amounts of polypropylene (PP), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) supplied to the respective hoppers 56 were 30% ± 10%, 40% ± 10% and 30% ±, respectively, based on the total weight. Feeding at a rate of 10%; 상기 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE) 및 선형저밀도폴리에틸렌(LLDPE)이 다이스(58)를 통과할 때의 온도는 폴리프로필렌(PP)의 온도는 160∼180℃를, 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)은 180∼200℃의 온도를 유지하고;When the polypropylene (PP), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) passes through the die 58, the temperature of the polypropylene (PP) is 160 ~ 180 ℃, low density polyethylene (LDPE) Linear low density polyethylene (LLDPE) maintains a temperature of 180 ~ 200 ℃; 상기 다이스(58)는 200∼215℃를 유지시켜 제조하는 것을 특징으로 하는 포장용 스트레치 필름 제조방법.The die (58) is a stretch film manufacturing method for packaging, characterized in that the manufacturing is maintained at 200 ~ 215 ℃. 제 1 항에 있어서;The method of claim 1; 상기 폴리프로필렌(PP)과 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)의 합지위치 가장자리에는 저밀도폴리에틸렌(LDPE)과 선형저밀도폴리에틸렌(LLDPE)이 수축되면서 주름이 생기는 것을 방지할 수 있도록 상온의 공기를 분사하는 것을 특징으로 하는 포장용 스트레치 필름 제조방법.At the temperature of the laminated position of the polypropylene (PP), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE), the low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE) is contracted while shrinking the air at room temperature Packaging method for manufacturing a stretch film, characterized in that for spraying.
KR1020070042148A 2007-04-30 2007-04-30 Manufacturing method for packing film KR100903931B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070042148A KR100903931B1 (en) 2007-04-30 2007-04-30 Manufacturing method for packing film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070042148A KR100903931B1 (en) 2007-04-30 2007-04-30 Manufacturing method for packing film

Publications (2)

Publication Number Publication Date
KR20080097053A true KR20080097053A (en) 2008-11-04
KR100903931B1 KR100903931B1 (en) 2009-06-19

Family

ID=40285110

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070042148A KR100903931B1 (en) 2007-04-30 2007-04-30 Manufacturing method for packing film

Country Status (1)

Country Link
KR (1) KR100903931B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112477347A (en) * 2020-11-25 2021-03-12 河南众德新材料有限公司 115-degree-cooking-resistant polyethylene cast film and production method and packaging bag thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102129605B1 (en) 2019-08-16 2020-07-03 (주)죽암엠앤씨 multi layer stretch film for use in frozen conditions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3429913B2 (en) 1995-07-21 2003-07-28 昭和電工株式会社 Multilayer film for packaging material
JP2001096687A (en) 1999-10-04 2001-04-10 Sekisui Chem Co Ltd Film for stretch packaging and production method therefor
JP4563711B2 (en) * 2004-03-30 2010-10-13 グンゼ株式会社 Substrate film for dicing
JP2006193196A (en) * 2005-01-17 2006-07-27 Toppan Printing Co Ltd Packaging material, and outer packaging bag for infusion solution bag using packaging material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112477347A (en) * 2020-11-25 2021-03-12 河南众德新材料有限公司 115-degree-cooking-resistant polyethylene cast film and production method and packaging bag thereof
CN112477347B (en) * 2020-11-25 2023-08-08 河南众德新材料有限公司 115-DEG C-resistant polyethylene cast film, production method thereof and packaging bag

Also Published As

Publication number Publication date
KR100903931B1 (en) 2009-06-19

Similar Documents

Publication Publication Date Title
AR024474A1 (en) COMPOSITION AND FILMS OF THE SAME, AND ARTICLE.
KR20110115135A (en) Easily tearable zipper tape and packaging bag with easily tearable zipper tape
JP7010611B2 (en) Polypropylene-based uniaxially stretched film and film laminate
JPWO2018101464A1 (en) Packaging materials, barrier packaging materials, and packaging bags
CN101622127A (en) Stretchable scrim wrapping material
EP3862181A1 (en) Polyethylene film
JP2020062786A (en) Laminate film for bag and method for producing the same
KR100903931B1 (en) Manufacturing method for packing film
CN105992686A (en) Pre-stretched packaging film
ITUA20163676A1 (en) MULTILAYER FILM
JP2016520457A (en) Sealable polypropylene film
WO2020241777A1 (en) Zipper tape and container equipped with zipper tape
CN103203921A (en) Composite heavy packaging film
US20150117800A1 (en) Tubular bag having a window
CA3006605C (en) Product and method for a plastic bag or plastic composition comprising inorganic minerals
CN106739329B (en) Multi-layer co-extruded embossing film of one kind and preparation method thereof
CN106081343B (en) A kind of tasteless environmentally friendly potato chips packaging membrane preparation method
JP6907404B2 (en) Resin composition for sealant, multilayer film for sealant, heat-sealing laminated film and packaging
KR20240142910A (en) Manufacturing method for packing film
CN114132613B (en) Container comprising a polyethylene laminate
WO2022047692A1 (en) Container comprising laminate of polyethylene
US20070059999A1 (en) Stretchy polyolefin woven wrap
KR20180047805A (en) Multi-layered film packing material and manufacturing method thereof
KR20180010507A (en) Multilayer polymer package material for packaging steel coil
US10954357B2 (en) Product and method for a plastic composition comprising inorganic materials

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E90F Notification of reason for final refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130530

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20140512

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20160520

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20170504

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20180409

Year of fee payment: 10

FPAY Annual fee payment

Payment date: 20190401

Year of fee payment: 11