KR950008120A - Manufacturing method of synthetic resin film - Google Patents

Manufacturing method of synthetic resin film Download PDF

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Publication number
KR950008120A
KR950008120A KR1019930018424A KR930018424A KR950008120A KR 950008120 A KR950008120 A KR 950008120A KR 1019930018424 A KR1019930018424 A KR 1019930018424A KR 930018424 A KR930018424 A KR 930018424A KR 950008120 A KR950008120 A KR 950008120A
Authority
KR
South Korea
Prior art keywords
layer
synthetic resin
manufacturing
resin film
lldpe
Prior art date
Application number
KR1019930018424A
Other languages
Korean (ko)
Other versions
KR970002311B1 (en
Inventor
임장욱
Original Assignee
임동욱
일신화학공업 주식회사
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 임동욱, 일신화학공업 주식회사 filed Critical 임동욱
Priority to KR1019930018424A priority Critical patent/KR970002311B1/en
Publication of KR950008120A publication Critical patent/KR950008120A/en
Application granted granted Critical
Publication of KR970002311B1 publication Critical patent/KR970002311B1/en

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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
    • B29C48/03—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
    • 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
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0625—LLDPE, i.e. linear low density 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets

Abstract

본 발명은 농업용 EVA(Ethylene Vinyl Acetate)필름의 제조방법에 관한 것으로, 다층 압출성형기를 사용하여 상층면에는 LDPE나 LLDPE 수지를 압출하고 중층에는 VA 15%~25%의 고농도 EVA수지층을, 하층에는 LDPE나 LLDPE 또는 VA3%~5%의 저농도 EVA수지층을 각각 형성하되, 상ㆍ중ㆍ하층간의 두께 비율이 20 : 60 : 20~10 : 80 : 10의 비율이 되게 구성함을 특징으로 하는 합성수지 필름의 제조방법.The present invention relates to a method for producing an agricultural EVA (Ethylene Vinyl Acetate) film, extruded LDPE or LLDPE resin in the upper layer using a multi-layer extrusion machine and a high EVA resin layer of 15% to 25% VA in the middle layer, the lower layer LDPE, LLDPE or VA3% to 5% of low-density EVA resin layer is formed, respectively, the thickness ratio between the upper, middle and lower layers is characterized in that the ratio of 20: 60: 20 ~ 10: 80: 10 Method of producing a synthetic resin film.

Description

합성수지 필름의 제조방법Manufacturing method of synthetic resin film

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1도는 종래의 단층 EVA필름의 단면구조도,1 is a cross-sectional structure diagram of a conventional single layer EVA film,

제 2도는 본 발명의 다층 EVA필름의 단면구조도,2 is a cross-sectional view of the multilayer EVA film of the present invention,

제 3도는 본 발명의 필름제조를 위한 다층 인플레이션 성형기의 일 예시적 개략도,3 is an exemplary schematic view of a multi-layer inflation molding machine for producing a film of the present invention,

제 4도는 본 발명의 필름 접합과정을 보인 다층 필름용 다이(DIE)의 단면예시도.4 is a cross-sectional view of a die for multilayer films (DIE) showing the film bonding process of the present invention.

Claims (1)

다층 압출성형기를 사용하여 상층면에는 LDPE나 LLDPE 수지를 압출하고 중층에는 VA 15%~25%의 고농도 EVA수지층을, 하층에는 LDPE나 LLDPE 또는 VA3%~5%의 저농도 EVA수지층을 각각 형성하되, 상ㆍ중ㆍ하층간의 두께 비율이 20 : 60 : 20~10 : 80 : 10의 비율이 되게 구성함을 특징으로 하는 합성수지 필름의 제조방법.LDPE or LLDPE resin is extruded on the upper layer using a multilayer extrusion machine, and a high concentration EVA resin layer of 15% to 25% VA is formed on the upper layer, and a low concentration EVA resin layer of LDPE or LLDPE or VA3% to 5% is formed on the lower layer. However, the method of manufacturing a synthetic resin film, characterized in that the ratio of the thickness of the upper, middle and lower layers is 20: 60: 20 ~ 10: 80: 10 ratio. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930018424A 1993-09-14 1993-09-14 Forming method for synthetic resin film KR970002311B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930018424A KR970002311B1 (en) 1993-09-14 1993-09-14 Forming method for synthetic resin film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930018424A KR970002311B1 (en) 1993-09-14 1993-09-14 Forming method for synthetic resin film

Publications (2)

Publication Number Publication Date
KR950008120A true KR950008120A (en) 1995-04-17
KR970002311B1 KR970002311B1 (en) 1997-02-27

Family

ID=19363472

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930018424A KR970002311B1 (en) 1993-09-14 1993-09-14 Forming method for synthetic resin film

Country Status (1)

Country Link
KR (1) KR970002311B1 (en)

Also Published As

Publication number Publication date
KR970002311B1 (en) 1997-02-27

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