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1. WO2020196185 - WATER-SOLUBLE PACKAGING FILM

Publication Number WO/2020/196185
Publication Date 01.10.2020
International Application No. PCT/JP2020/012091
International Filing Date 18.03.2020
IPC
B65D 65/46 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
65Wrappers or flexible covers; Packaging materials of special type or form
38Packaging materials of special type or form
46Applications of disintegrable, dissolvable or edible materials
C08K 5/092 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5Use of organic ingredients
04Oxygen-containing compounds
09Carboxylic acids; Metal salts thereof; Anhydrides thereof
092Polycarboxylic acids
C08L 29/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
29Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
02Homopolymers or copolymers of unsaturated alcohols
04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
Applicants
  • 積水化学工業株式会社 SEKISUI CHEMICAL CO., LTD. [JP]/[JP]
Inventors
  • 米田 義和 YONEDA, Yoshikazu
Agents
  • 特許業務法人 安富国際特許事務所 YASUTOMI & ASSOCIATES
Priority Data
2019-05864226.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-SOLUBLE PACKAGING FILM
(FR) FILM D'EMBALLAGE SOLUBLE DANS L'EAU
(JA) 水溶性包装用フィルム
Abstract
(EN)
The present invention provides a water-soluble packaging film with which it is possible to prevent deterioration in external appearance such as clouding over time and to prevent reductions in sealing properties, especially heat sealing properties, and which also makes it possible to realize exceptional solubility in water and resistance to degradation after packaging. The present invention is a water-soluble packaging film that contains a polyvinyl alcohol, a plasticizer, and a hydroxyl-group-containing dicarboxylic acid, wherein the hydroxyl-group-containing dicarboxylic acid is such that the hydroxyl group coefficient obtained by dividing the weight-average molecular weight by the number of hydroxyl groups is 90 or higher, and the hydroxyl-group-containing dicarboxylic acid content is 1-5 parts by weight.
(FR)
La présente invention concerne un film d'emballage soluble dans l'eau, avec lequel film il est possible d'empêcher une détérioration de l'aspect externe, telle qu'un voile au cours du temps, et d'empêcher des réductions des propriétés d'étanchéité, spécialement des propriétés d'étanchéité vis-à-vis de la chaleur, et lequel rend également possible d'obtenir une solubilité dans l'eau et une résistance à la dégradation après emballage exceptionnelles. A cet effet, la présente invention porte sur un film d'emballage soluble dans l'eau qui contient un poly(alcool vinylique), un plastifiant et un acide dicarboxylique contenant un groupe hydroxyle, l'acide dicarboxylique contenant un groupe hydroxyle étant tel que le coefficient de groupe hydroxyle obtenu par division du poids moléculaire moyen en poids par le nombre de groupes hydroxyle est de 90 ou plus, et que la teneur en acide dicarboxylique contenant un groupe hydroxyle est de 1 à 5 parties en poids.
(JA)
本発明は、長期間に渡って曇り等の外観不良やシール性、特にヒートシール性の低下を防止することができ、包装後も劣化が生じにくく優れた水溶性を実現することが可能な水溶性包装用フィルムを提供する。 本発明は、ポリビニルアルコール、可塑剤、及び、水酸基を含むジカルボン酸を含有する水溶性包装用フィルムであって、前記水酸基を含むジカルボン酸は、重量平均分子量を水酸基の数で割った水酸基係数が90以上であり、前記水酸基を含むジカルボン酸の含有量が1~5重量部である水溶性包装用フィルムである。
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