PVA U 33


GLUE U 33 (PVA)

 

PVA U33 adhesive - is applied for gluing paper products, cardboard, leather and fabrics. Suitable for gluing linoleum, carpet, facing tile, synthetic wall coatings on a paper basis, fiberglass, vinyl and paper wall coverings, cork, calico strip, building nets and bandages. It can be used for gluing decorative paper-laminated plastic to fibreboard, particle board, and medium density fibreboard and to other materials. And also for augmentation of water resistance and for increase of hardness concrete, plaster and putty compositions.

Chemical properties

PVA U33 is polyvinyl acetate dispersion with plasticizer and modifying components.

 

Properties

― Is easily applied on adherents

― Transparent and high elasticity of a film

― Stability to mechanical agitating

― Good water resistance and scrub resistance

― Low water absorption

― Is nontoxic, after drying the film does not evolve harmful materials

― Glue possesses high bond strength and optimum setting time

― After drying forms firm-elastic adhesive coat, on hardness exceeding hardness of wood

 

Product specifications

The basic Technical Data of PVA U33 adhesive on TSh 64-15329272-01:2003 (with Change №1,2,3,4) and GOST 18992-80

Appearance

The white viscous liquid, without lumps and foreign substances,  with particle size 1-3 microns. The top skin is supposed.

Solids content

30 %

Dynamic viscosity

2.0 - 15.0 mPa•s

pH value

3.3 – 6.0

Frost resistance, cycles, (freezing - thawing) not less

not resistant to frost

Gluing ability

300 (0.3) kgs/sm

Plasticizer content

plasticized

 

Film properties

Film appearance   

Transparent             

Flexibility

Good    

Resistance to ageing 

High             

Resistance to light

Strong        

 

Ranges of application            

PVA U33 - is general-purpose binder, mainly used for the following applications.

― As an adhesive for a paper, cardboard, wood, plywood and cotton, at production of tare and packing from a paper and cardboard, a corrugated cardboard and wood, and also for gluing labels (except the food-processing industry)

― As a binder in water emulsion paints

― As a binder for production polymer-cements, polymer concretes, and seamless floorings

― As a glue at production of binding-stitching works

― As a glue for tare from a paper, cardboard and tree, intended for packaging of foodstuff provided that they not contact with a glue, and also tare for clothes, footwear and etc.

― As a sizing agent by production of a shoe board

― As a binder at manufacturing glue for furniture industry

 

Processing

Before using the PVA U33 it is necessary to blend or shake up till homogeneous mass. 

Bonding surfaces pretreat from dust, resin, fat stain and other contaminants. It should be thin on one of the gluing surface, thereafter connect with other and slightly press. At increased requirements to bond strength, the PVA U33 should coat on both bonded surfaces. As far as possible put them under press. Glue consumption makes 50-300 gr. on 1m² depending on the structure of bonded bases. Recommended temperature must not be below +10 °C, relative humidity above 80%.

 

Safety

General

In process of recycling should be provided effective ventilation and personal skin protection equipments and safety glasses. In case of eye/skin contact with a product rinse your eyes/skin in plenty of water. PVA U 33 is nonhazardous. On toxic properties labels to 3 class - product is moderate dangerous.

 

Storage

PVA U33 should be stored in a tightly closed container in a dry place at temperature not below +5 °C. It should not be exposed to powerful heating and freezing. It has a shelf life of 12 months from the manufacturing date.

 

Packaging

All PVA adhesives produced by the company are packaged in modern plastic containers in weight on 800 gr. and in industrial containers: plastic barrels with capacity from 40 to 60 kg. or steel barrels with capacity 200 kg., as well as in any other form of packaging under the agreement with consumer.

 

Transportation

PVA U33 is transported in sealed plastic barrels (steel with plastic liner) at temperature not below +5 °C.

 

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