KR102401694B1 - 폴리에틸렌계 수지 적층 발포 시트의 제조 방법, 폴리에틸렌계 수지 적층 발포 시트 및 그것을 사용한 유리판용 간지 - Google Patents
폴리에틸렌계 수지 적층 발포 시트의 제조 방법, 폴리에틸렌계 수지 적층 발포 시트 및 그것을 사용한 유리판용 간지 Download PDFInfo
- Publication number
- KR102401694B1 KR102401694B1 KR1020177029516A KR20177029516A KR102401694B1 KR 102401694 B1 KR102401694 B1 KR 102401694B1 KR 1020177029516 A KR1020177029516 A KR 1020177029516A KR 20177029516 A KR20177029516 A KR 20177029516A KR 102401694 B1 KR102401694 B1 KR 102401694B1
- Authority
- KR
- South Korea
- Prior art keywords
- polyethylene
- low
- density polyethylene
- foam sheet
- antistatic
- Prior art date
- Legal status (The legal status 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 status listed.)
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Images
Classifications
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
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- 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
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- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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Abstract
Description
도 2는 본 발명의 제조 방법으로 얻어지는 폴리에틸렌계 수지 적층 발포 시트의 두께 방향의 모식 단면도이다.
2 발포층 3 대전 방지층
A 발포층을 형성하는 저밀도 폴리에틸렌 A
4 제 1 압출기 5 물리 발포제
6 발포층 형성용 용융 수지 조성물
B 대전 방지층을 형성하는 저밀도 폴리에틸렌 B
C 고분자형 대전 방지제 C 7 제 2 압출기
8 휘발성 가소제
9 대전 방지층 형성용 용융 수지 조성물
10 환상 다이 11 통 형상 적층 발포체
Claims (8)
- 발포층의 적어도 편면에 대전 방지층이 적층 접착된 두께가 0.05∼0.5㎜인 폴리에틸렌계 수지 적층 발포 시트를 제조하는 방법으로서,
저밀도 폴리에틸렌 A 및 물리 발포제를 혼련하여 이루어지는 발포층 형성용 용융 수지 조성물과, 저밀도 폴리에틸렌 B 및 대전 방지제를 혼련하여 이루어지는 대전 방지층 형성용 용융 수지 조성물을 다이 내에서 합류 적층시킨 적층물을 공압출하여 발포시키는 공정을 포함하고,
대전 방지제는, 융점이 120℃ 이하이고, 저밀도 폴리에틸렌 B와의 융점차가 -10℃∼+10℃의 범위 내의 융점을 갖고, 또한 JIS K7210-1:2014에 따라서 온도 190℃, 하중 2.16㎏에서 측정되는 멜트 플로우 레이트가 10g/10분 이상인 고분자형 대전 방지제 C인 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트의 제조 방법. - 제 1 항에 있어서,
JIS K7210-1:2014에 따라서 온도 190℃, 하중 2.16㎏에서 측정되는 저밀도 폴리에틸렌 B의 멜트 플로우 레이트가 5g/10분 이상인 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트의 제조방법. - 제 1 항에 있어서,
저밀도 폴리에틸렌 A 및 저밀도 폴리에틸렌 B의 JIS K7210-1:2014에 따라서 온도 190℃, 하중 2.16㎏에서 측정되는 멜트 플로우 레이트가 모두 10∼20g/10분인 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
JIS K7210-1:2014에 따라서 온도 190℃, 하중 2.16㎏에서 측정되는 고분자형 대전 방지제 C의 멜트 플로우 레이트에 대한, JIS K7210-1:2014에 따라서 온도 190℃, 하중 2.16㎏에서 측정되는 저밀도 폴리에틸렌 B의 멜트 플로우 레이트의 비(저밀도 폴리에틸렌 B의 멜트 플로우 레이트/고분자형 대전 방지제 C의 멜트 플로우 레이트)가 2 이하인 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
대전 방지층의 평량이 1∼5g/㎡의 범위 내인 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
대전 방지층에 있어서의 고분자형 대전 방지제 C의 배합량이 저밀도 폴리에틸렌 B 100질량부에 대하여 5∼300질량부인 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트의 제조 방법. - 저밀도 폴리에틸렌 A로 이루어지는 발포층의 적어도 편면에 저밀도 폴리에틸렌 B와 대전 방지제를 포함하는 대전 방지층이 적층 접착된 폴리에틸렌계 수지 적층 발포 시트로서,
발포 시트의 두께가 0.05㎜∼0.5㎜의 범위 내, 겉보기 밀도가 20∼450㎏/㎥의 범위 내이고,
대전 방지제가, 융점이 120℃ 이하이고, 저밀도 폴리에틸렌 B와의 융점차가 -10℃∼+10℃의 범위 내의 융점을 갖고, 또한 JIS K7210-1:2014에 따라서 온도 190℃, 하중 2.16㎏에서 측정되는 멜트 플로우 레이트가 10g/10분 이상인 고분자형 대전 방지제 C이고, 상기 고분자형 대전 방지제 C가 저밀도 폴리에틸렌 B 100질량부에 대하여 5∼300질량부 배합되어 있는 것을 특징으로 하는 폴리에틸렌계 수지 적층 발포 시트. - 제 7 항에 기재된 폴리에틸렌계 수지 적층 발포 시트로 이루어지는 유리판 간지.
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JP2014043553A (ja) | 2012-08-03 | 2014-03-13 | Jsp Corp | ポリエチレン系樹脂発泡シートの製造方法 |
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WO2016152910A1 (ja) | 2016-09-29 |
US20180051154A1 (en) | 2018-02-22 |
US10465057B2 (en) | 2019-11-05 |
KR20170130471A (ko) | 2017-11-28 |
CN107428057B (zh) | 2020-04-03 |
CN107428057A (zh) | 2017-12-01 |
EP3275618A1 (en) | 2018-01-31 |
EP3275618B1 (en) | 2019-11-13 |
EP3275618A4 (en) | 2018-09-05 |
JP2016182736A (ja) | 2016-10-20 |
JP6078091B2 (ja) | 2017-02-08 |
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