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HRANIRESIN 47 - Rășină uree formaldehidă

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Ambalare
25 kg
 

Descriere produs

Urea-formaldehyde based resin with special flours added. It is used in the wood industry for hotsetting bonding. It is characterized by high tenacity and good pot life.

Usage:

  • plywood,
  • cored panels,
  • paper,
  • veneers

Characteristics:

Hraniresin 47 is a white or walnut coloured. The best usage is in wood industry. However, woods like birch, rosewood, teak, fir-wood and briars in general may sometimes require a special formulation

Specific gravity

approx. 0.5

g/cm3

Viscosity Brookfield at 20° C s3/5 rpm (solution 2:1 in water)

2,000–7,000

mPas

The product must be diluted in water at approx. 65% of solid content as in the following formulation:

Hraniresin 47

Cold water (15–20 °C)

10

5

kg

kg

Pot lives at:

15 °C

20 °C

30 °C

 

7

4

2

 

h

h

h

Hardening times at:

60 °C

80 °C

100 °C

 

8

100

50

 

min

s

s

When applying the product, hardening time must be increased by one minute for each millimetre of wood thickness.

Application:

Apply using an applicator with rollers, spatula or brush. Glue quantity must be spread according to the type of the materials involved (generally between 100 and 200 g/m2). The press operating pressure depends on the materials used, ranging from 0,8 to 2 kg /cm2.

The gluing mixture should preferably be prepared in non-metallic vessels, or in stainless steel recipient.

Packaging and storage:

Store in original and closed package at temperature 10–30 °C. The shelf life is 6 months. This product is hygroscopic and must be preserved from contact with humidity. Contact with humidity may lead to formation of blocks and the glue may become unusable.