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1. WO2000038843 - BIAXIALLY ORIENTED POLYETHYLENE FILM WITH IMPROVED OPTICS AND SEALABILITY PROPERTIES

Publication Number WO/2000/038843
Publication Date 06.07.2000
International Application No. PCT/US1999/026470
International Filing Date 10.11.1999
Chapter 2 Demand Filed 21.07.2000
IPC
B05D 1/26 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
1Processes for applying liquids or other fluent materials
26performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
B05D 3/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
3Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
12by mechanical means
B05D 7/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
7Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
02to macromolecular substances, e.g. rubber
04to surfaces of films or sheets
B29C 55/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
B32B 27/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
32comprising polyolefins
CPC
B05D 1/265
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
1Processes for applying liquids or other fluent materials
26performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
265Extrusion coatings
B05D 3/12
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
3Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
12by mechanical means
B05D 7/04
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
7Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
02to macromolecular substances, e.g. rubber
04to surfaces of films or sheets
B29C 55/023
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
023using multilayered plates or sheets
B29K 2023/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING 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
2023Use of polyalkenes ; or derivatives thereof; as moulding material
04Polymers of ethylene
06PE, i.e. polyethylene
B32B 2038/0028
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
38Ancillary operations in connection with laminating processes
0012Mechanical treatment, e.g. roughening, deforming, stretching
0028Stretching, elongating
Applicants
  • MOBIL OIL CORPORATION [US/US]; 3224 Gallows Road Fairfax, VA 22037-0001, US
Inventors
  • SU, Tien-Kuei; US
  • POIRIER, Robert, V.; US
Agents
  • ALEXANDER, David, J. ; ExxonMobile Chemical Company P.O. Box 2149 Baytown, TX 77522-2149, US
Priority Data
09/220,98323.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BIAXIALLY ORIENTED POLYETHYLENE FILM WITH IMPROVED OPTICS AND SEALABILITY PROPERTIES
(FR) FILM DE POLYPROPYLENE ORIENTE BI-AXIALEMENT, PRESENTANT DES PROPRIETES OPTIQUES ET D'ADHERENCE AMELIOREES
Abstract
(EN)
Methods of preparaing biaxially oriented polyethylene films with improved optics and sealability properties are provided. The methods include stretching in the machine direction a multi-layer base sheet having a core layer with a first and a second side, at least one skin layer and outer surfaces; then coating at least one of the outer surfaces with a resin selected from the group consisting of low density polyethylene, very low density polyethylene, linear low density polyethylene and blends thereof; and finally, stretching the base sheet in a direction transverse to the machine direction.
(FR)
L'invention concerne des procédés de préparation de films de polypropylène orientés bi-axialement et présentant des propriétés optiques et d'adhérence améliorées. Les procédés comportent l'étirage, suivant la direction de production, d'une feuille de base multicouche présentant une couche noyau, avec un premier et un second côté, au moins une couche superficielle, et des surfaces extérieures, puis le revêtement d'au moins une des surfaces extérieures, avec une résine choisie dans le groupe constitué par le polyéthylène basse densité, le polyéthylène très basse densité, le polyéthylène basse densité linéaire, et des mélanges de ces derniers, et finalement l'étirage de la feuille de base perpendiculairement à la direction de production.
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