CS261685B1 - Adhesive for bonding the lenses based on polyvinyl acetate dispersion - Google Patents

Adhesive for bonding the lenses based on polyvinyl acetate dispersion Download PDF

Info

Publication number
CS261685B1
CS261685B1 CS875894A CS589487A CS261685B1 CS 261685 B1 CS261685 B1 CS 261685B1 CS 875894 A CS875894 A CS 875894A CS 589487 A CS589487 A CS 589487A CS 261685 B1 CS261685 B1 CS 261685B1
Authority
CS
Czechoslovakia
Prior art keywords
polyvinyl acetate
acetate dispersion
adhesive
dispersion
bonding
Prior art date
Application number
CS875894A
Other languages
Czech (cs)
Slovak (sk)
Other versions
CS589487A1 (en
Inventor
Vladimir Ing Thomka
Marianna Ing Brandisova
Jan Ing Zahradka
Original Assignee
Thomka Vladimir
Brandisova Marianna
Zahradka Jan
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 Thomka Vladimir, Brandisova Marianna, Zahradka Jan filed Critical Thomka Vladimir
Priority to CS875894A priority Critical patent/CS261685B1/en
Publication of CS589487A1 publication Critical patent/CS589487A1/en
Publication of CS261685B1 publication Critical patent/CS261685B1/en

Links

Landscapes

  • Adhesives Or Adhesive Processes (AREA)

Abstract

Riešenie sa týká lepidla na báze polyvinylacetátovej disperzie, ktoré obsahuje 5,0 až 7,0 % hmot. karboxymetylcelulózy, vzťahujúcej sa na hmotnost polyvinylacetátovej disperzie s dynamickou viskozitou 2,5 až 8 Pa . s, 50,0 až 90,0 % hmot. polyvinylacetátovej disperzie s dynamickou viskozitou 1,5 až 13 Pa . s, s oibsahom sušiny 55 + 1,5 % hmot. s pH 3 až 5 a zvyšok do 100 % hmot. vody. Lepidlo1 je možné využit v polygrafickom priemysle.The solution concerns an adhesive based on polyvinyl acetate dispersion, which contains 5.0 to 7.0% by weight. of carboxymethyl cellulose, referring to the weight of a polyvinyl acetate dispersion with a dynamic viscosity of 2.5 to 8 Pa. with, 50.0 to 90.0 wt.% polyvinyl acetate dispersion with a dynamic viscosity of 1.5 to 13 Pa. with, with a dry matter content of 55 + 1.5% by mass. with pH 3 to 5 and the rest up to 100% by mass. water. Glue1 can be used in the printing industry.

Description

Riešenie sa týká lepidla na báze polyvinylacetátovej disperzie, ktoré obsahuje 5,0 až 7,0 % hmot. karboxymetylcelulózy, vzťahujúcej sa ne hmotnosť polyvinylacetátovej disperzie s dynamickou viskozitou 2,5 až 8 Pa . s, 50,0 až 90,0 % hmot. polyvinylacetátovej disperzie s dynamickou viskozitou 1,5 až 13 Pa . s, s obsahom sušiny 55 + 1,5 % hmot. s pH 3 až 5 a zvyšok do 100 % hmot. vody. Lepidlo· je možné využiť v polygrafiekom priemysle. 261685

261685

Vynález sa týká lepidla na lepenie predsádok na báze polyvinylacetátovej disperzie, ktoré je možné použiť nia lepenie predsádok v strojoch typu KB 400, resp. v agregátoch na lepenie predsádok.

Na lepenie predsádok v uvedených zariadeniach sa doteraz používala polyvinylacetátová disperzia Duviiax BD 20. Pri náročnějších publikáciách, zhotovených na povrchovo zušťachtenom papieri sa na lepenie predsádok používalo polyvinylacetátové disperzně lepidlo.

Polyvinylacetátová disperzia Duviiax BD 20 má z híadiska použitia v polygrafickom priemysle niekolko· nevýhod. Sú to nestandardně kvalitativně parametre, před použitím sa disperzia musí upravovat, lepidlo na čelách nanášacieho disku zasychá. Ďalej je to nízká začiatočná lepivost disperzie ako aj obsah nečistot.

Uvedené nedostatky odstraňuje lepidlo na lepenie predsádok na báze polyvinylacetátovej disperzie podlá vynálezu, ktorého podstata spočívá v tom, že obsahuje 5,0 až 7,0 % hmot. karboxymetylcelulózy vztiahnuté na hmotnost polyvinylacetátovej disperzie o dynamickej viskozite 2,5 až 8 Pa . s, 50,0 až 90,0 % hmot. polyvinylacetátovej disperzie o dynamickej viskozite 1,5 až 13 Pa . s, s obsahom sušiny 55 + 1,5 % a s pH '3 až 5 a zvyšok do 100 °/o hmot. vody.

Lepidlo podlá vynálezu nie je potřebné před použitím riedif vodou ani ináč upravovat. Dokonale zmáča povrch prírodných ako aj povrchovo zušlachtených papierov, začiatočná lepivost lepidla ako aj pevnosť spoja v oboch prípadoch sú dobré. Nános lepidla možno bez problémov regulovat. Lepidlo je stabilně do teploty —5 T.

Uvedený příklad ilustruje, ale neobmedzuje predmet vynálezu. i' , Příklad

Do miešacieho kotlá sa nadávkovalo 30 kg polyvinylacetátovej disperzie Duviiax BD 20, prefiltrovanej sitkom s priemerom 6k 2 mm. K disperzii sa postupné za stálého miešania přidal 10 %-ný roztok karboxymetylcelulózy v množstve 1,5 kg na hmotnost disperzie. Lepidlo sa dobré premiešalo.

Dynamická viskozita. lepidla sa pohybovala v rozmedzí 3 200 až 3 600 mPa . s.

Lepidlo sa použilo na lepenie predsádok (prírodný papier plošnej hmotnosti 120 g . . m~2) na knižné zložky z prírodného ako aj povrchovo zušťachteného papiera.

Vzhlad a adhézia lepidla boli dobré aj po roku. Životnost lepidla je šest mesiacov.

The present invention relates to a polyvinyl acetate dispersion adhesive comprising 5.0 to 7.0 wt. carboxymethylcellulose, based on the weight of the polyvinyl acetate dispersion having a dynamic viscosity of 2.5 to 8 Pa. s, 50.0 to 90.0 wt. polyvinyl acetate dispersion with a dynamic viscosity of 1.5 to 13 Pa. s, with a dry matter content of 55 + 1.5% by weight. with a pH of 3 to 5 and a residue of up to 100% by weight. water. Glue · can be used in the printing industry. 261685

261685

BACKGROUND OF THE INVENTION The present invention relates to a polyvinyl acetate dispersion-based adhesive for bonding lenses, which can be used to bond lenses in KB 400 or L-type machines. in lining units.

Duviiax BD 20 polyvinyl acetate dispersion has previously been used to bond the lining in said apparatuses. For more sophisticated publications made on surfactant paper, polyvinyl acetate dispersion adhesive was used to bond the lenses.

Duviiax BD 20 polyvinyl acetate dispersion has several drawbacks in terms of use in the printing industry. These are unusually qualitative parameters, the dispersion has to be treated before use, the adhesive on the faces of the application disk dries. Furthermore, it is a low initial dispersion tack as well as an impurity content.

The above-mentioned drawbacks are eliminated by the polyvinyl acetate dispersion adhesive according to the invention, which comprises 5.0 to 7.0 wt. carboxymethylcellulose based on the weight of the polyvinyl acetate dispersion having a dynamic viscosity of 2.5 to 8 Pa. s, 50.0 to 90.0 wt. polyvinyl acetate dispersion with a dynamic viscosity of 1.5 to 13 Pa. with a dry matter content of 55 ± 1.5% and a pH of 3 to 5 and a residue of up to 100% by weight. water.

The adhesive of the invention need not be diluted with water or otherwise treated prior to use. It perfectly wipes the surface of natural as well as surface-treated papers, the initial tack of the adhesive as well as the bond strength in both cases are good. The application of the adhesive can be easily controlled. The adhesive is stable to -5 T.

This example illustrates, but does not limit the invention. i ', Example

30 kg of Duviiax BD 20 polyvinyl acetate dispersion, filtered through a sieve with a diameter of 6k 2 mm, was charged into the mixing kettle. To the dispersion, a 10% solution of carboxymethylcellulose in an amount of 1.5 kg per weight of dispersion was gradually added with stirring. The adhesive was well mixed.

Dynamic viscosity. the adhesive ranged from 3,200 to 3,600 mPa. with.

The glue was used to bond the lenses (natural paper of 120 g / m 2) to both natural and surface-fed paper.

The appearance and adhesion of the adhesive was good even after one year. The adhesive life is six months.

Claims (1)

PREDMET Lepidlo na lepenie predsádok na báze polyvinylacetátovej disperzie vyznačujúce sa tým, že obsahuje 5,0 až 7,0 % hmot. karboxymetylcelulózy vzťahujúcej sa na hmotnost polyvinylacetátovej disperzie s dynamickou viskozitou 2,5 až 8 Pa. s; '50,0 až VYNALEZU 90,0 % hmot. polyvinylacetátovej disperzie s dynamickou viskozitou 1,5 až 13 Pa. s, s obsahom sušiny 55. 1,5 % hmot. a pH 3 až 5; a zvyšok do 100 % hmot. vody.OBJECT A glue for bonding the lenses based on a polyvinyl acetate dispersion, characterized in that it contains 5.0 to 7.0 wt. carboxymethyl cellulose based on the weight of the polyvinyl acetate dispersion with a dynamic viscosity of 2.5 to 8 Pa. with; 0, 0 to 0 90.0 wt. polyvinyl acetate dispersion with a dynamic viscosity of 1.5 to 13 Pa. s, with a dry matter content of 55. 1.5 wt. and a pH of 3 to 5; and the remainder to 100 wt. water.
CS875894A 1987-08-10 1987-08-10 Adhesive for bonding the lenses based on polyvinyl acetate dispersion CS261685B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS875894A CS261685B1 (en) 1987-08-10 1987-08-10 Adhesive for bonding the lenses based on polyvinyl acetate dispersion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS875894A CS261685B1 (en) 1987-08-10 1987-08-10 Adhesive for bonding the lenses based on polyvinyl acetate dispersion

Publications (2)

Publication Number Publication Date
CS589487A1 CS589487A1 (en) 1988-07-15
CS261685B1 true CS261685B1 (en) 1989-02-10

Family

ID=5404757

Family Applications (1)

Application Number Title Priority Date Filing Date
CS875894A CS261685B1 (en) 1987-08-10 1987-08-10 Adhesive for bonding the lenses based on polyvinyl acetate dispersion

Country Status (1)

Country Link
CS (1) CS261685B1 (en)

Also Published As

Publication number Publication date
CS589487A1 (en) 1988-07-15

Similar Documents

Publication Publication Date Title
US3477970A (en) Pigmented paper coating and adhesive compositions containing a polyvinyl alcohol binder and a modifier therefor
US4355074A (en) Bonding sheet-like material to a substrate from which it can be dry-stripped
IE52660B1 (en) Gypsum wallboard paper
SA02220651B1 (en) Pre-mixed, pre-mixed, lightweight bonding compound
EP0216516B1 (en) Aqueous suspensions of mixtures of inorganic pigments
US3770577A (en) Fire retardant paper and paper board
US3849184A (en) Treatment of paperboard
EP0008213A1 (en) The use of synthetic polymeric compositions as wallpaper adhesive
ATE286941T1 (en) AQUEOUS BINDER DISPERSIONS, COATING AGENTS AND THE USE THEREOF
US4992501A (en) Repulpable tape
US2441927A (en) Mucilaginous composition
DE69329290T2 (en) PRESSURE SENSITIVE ADHESIVE LATEX COMPOSITIONS
US2628948A (en) Polyvinyl acetate emulsion containing an acetic acid ester of glycerol
US4526914A (en) Whitewater formulation containing a cationic polyacrylamide
CS261685B1 (en) Adhesive for bonding the lenses based on polyvinyl acetate dispersion
US3135590A (en) Dimensionally stabilized paper and coated abrasives made therefrom
ATE18565T1 (en) AQUEOUS POLYVINYLESTER DISPERSION, PROCESS FOR ITS PREPARATION AND ITS USE.
US3684749A (en) Adhesive composition for gummed tape
EP0159132B1 (en) Prepasted wallcoverings
CN103881612B (en) A kind of functional type Aqueous Adhesives and its preparation method and application
US2500972A (en) Production of clay coated sheet material
US2593236A (en) Adhesive composition comprising a vinylidene chloride-acrylonitrile copolymer latex and a protein
JPH111595A (en) Aqueous composition
SU773060A1 (en) Adhesive composition
US4725498A (en) Paper-adhesive tape to restore, preserve and assemble paper substrates