Multi-ply paper glued material for the manufacture of cartridge cases

 

(57) Abstract:

The inventive bonding of elementary layers using a composition containing 100 wt.h. sticky agent and 1 to 40 wt.h. a hardening agent. As the adhesive agent used liquid concentrate sulphite yeast brew or sulfite-alcohol bard, or technical lignosulfonates. As a hardening agent used Na salt of carboxymethyl cellulose, or polyvinyl acetate, or a mixture with a ratio of Na salt of carboxymethyl cellulose and polyvinyl acetate from 1 : 5 to 1 : 40. 1 C.p. f-crystals, 1 table.

The invention relates to pulp and paper production and concerns cardboard paper tubes for winding role of paper and toilet paper.

Known two-layer paper glued material, including elementary layers located between adhesive layer of lignosulfonate (1).

The disadvantage of this material is that the adhesive over time oxidizes and turns into dust-like state, causing glued layers are stratified.

Known multi-ply paper glued material for the manufacture of cartridge cases, including elementary cardboard and paper layers with raspolozhennoi or spiral wound paper or paperboard coated with the adhesive and the subsequent drying of the paper liners.

Known material has good performance characteristics, but with cold glue causing the trouble.

The closest analogue of the technical solution is multi-ply paper glued material for the manufacture of cartridge cases, including elementary layers located between the intermediate layer containing the adhesive agent (3).

Known material get straight or spiral wound paper or paperboard coated with the adhesive and the subsequent drying of the sleeves.

The elementary layers known material contains paper; as a sticky agent is sodium silicate. The song at the elementary layer is applied from a solution of a mixture of water and ethyl alcohol.

Known material has good performance characteristics. However, the method of obtaining silicate glue is environmentally harmful production, therefore its use is limited.

New technical result of the claimed technical solution is the possibility of obtaining sleeves high quality while expanding the range of adhesive compositions using as the adhesive agent waste PPI-lignosulfonate.

The elementary layers use a cardboard canvas, the paper web or interleaved; as a hardening agent Na or PVA, or a mixture of Na salt of carboxymethyl cellulose and polyvinyl acetate at a ratio of 1:5-1:40.

Receive the proposed material by coating the adhesive composition on a paper strip and the subsequent direct or spiral wound strips on a metal rod walesonline machine and air drying the obtained sleeves. Put a hardening agent makes the film adhesive softer, increases the stickiness of the adhesive layer and to improve its mechanical properties in comparison with the prototype.

Use a hardening agent in the form of water the solids in the adhesive composition should be 43-48% Viscosity adhesive residue must be in the range of 40-70 with 30-35aboutWith the funnel of the OT-4.

P R I m e R 1. Multi-ply paper glued material containing as elementary layers of wrapping paper with a weight of 160 g/m2with located between the adhesive layer of the following composition, wt.h. lignosulfonates 100

sodium carboxymethyl cellulose 1

receive by direct winding of paper, passed through a bath walesonline machine. The inner diameter of the sleeve 76 mm, wall thickness 12-13 mm

The adhesive composition in the bath walesonline machine is at a temperature of 30-35aboutWith viscosity (OT-4) 65, when the dry matter content of 48%

Prepare the adhesive composition as follows: Na (brand 75/400) is soaked in water so as to obtain a 5-6% aqueous gel, then the gel is mixed with technical lignosulfonates and mix.

The resulting material experience, the results are presented in the table.

P R I m m e R 2. Multi-ply paper sticky material containing as a basic layers of a strip of paperboard weighing 200 g/m2with located between the adhesive layer of the following composition, wt.h. lignosulfonates 100 polyvinyl acetate dispersion 40,

produced by spiral winding of strips of cards the woman wall 8-10 mm.

The adhesive composition is prepared by a mixture of lignosulfonate and polyvinyl acetate dispersion, obtaining a homogeneous composition with a viscosity of 70 at a temperature of 30about(OT-4) and dry matter content of 48%

The resulting core experience, the results are presented in the table.

P R I m e R 3. Multi-ply paper glued material containing layer of paper weighing 120 g/m2and two cardboard layer weight of 240 g/m2located between the adhesive layer of the following composition, wt.h. sulfite-alcohol stillage 100 Na 0,5 PVA dispersion 20,

produced by spiral winding. The resulting sleeve has a diameter of 38 mm, wall thickness 2 mm

The adhesive composition is prepared by mixing sulfite-alcohol stillage with a water gel Na and polyvinyl acetate dispersion at a ratio of 1:40, getting a homogeneous composition with a viscosity of 56 at a temperature of 30about(OT-4) and dry matter content of 43%

The resulting core experience, the results are presented in the table.

P R I m e R 4. Multi-ply paper glued material containing as a basic layers of paperboard weighing 165 g/m2with located between the adhesive layer of the following composition, wt.h. lignosulfonates 100 Na 1 P is and the walls 12-13 mm

The adhesive composition is prepared by mixing the lignosulfonate with a water gel Na and polyvinyl acetate dispersion at a ratio Na surfactant=1:5 dry matter, getting a homogeneous adhesive composition with a viscosity of 50 at a temperature of 30about(OT-4) and dry matter content of 46%

The resulting core experience, the results are presented in the table.

P R I m e R 5 (prototype).

Multi-ply paper glued material was obtained analogously to example 1 with the only difference that, as the adhesive agent, the intermediate layer contains sodium silicate.

The resulting core experience, the results are presented in the table.

From the data presented in the table shows that the adhesion between the elementary layers of paper laminated glued material on the adhesion level of the prototype or 84% higher adhesion (stickiness) between elementary layers of paper laminated material made of the prototype.

However, in the process of production of paper and cardboard sleeves, made the prototype, increases the percentage of rejection of the sleeves when cutting the sleeves on the format (5-7%).

1. Multi-ply PAPER GLUED MATERIAL FOR the MANUFACTURE of CARTRIDGE cases, including elem intermediate layer further comprises a hardening agent, selected from the group consisting of sodium carboxymethyl cellulose, polyvinyl acetate and their mixtures, and as an adhesive agent liquid concentrate sulphite yeast brew, or sulfite-alcohol bard, or technical lignosulfonates in the following ratio, wt.h.

Sticky agent 100

Hardening agent 1 40

2. The material under item 1, characterized in that the intermediate layer as a hardening agent contains a mixture of sodium salt of carboxymethyl cellulose and polyvinyl acetate at a ratio 1 5 40.

 

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