DE2526292A1 - PROCESS FOR THE MANUFACTURING OF FILMS AND LAMINATES ON THE BASIS OF UNSATURED POLYESTER RESINS - Google Patents

Description

June 24, 1974

Process for the production of foils and materials on the basis imgeaatrtx ^ fcei »Polyonüerharse

The invention relates to a process for the continuous production of rollable polishing and jchioht materials on the basis of polyether resin-coated paper or Gev / ebabaimeu without the use of Y.lirne for: .i drying and finishing the ßeneamiien Ha

3. '. Well known, single or multi-layered surface coating from polyeoteric drinks Paper or Gev / ebebaluien olirie odor using by Warne to manufacture

"iJiiirjohichtige OberfllichenbeschiülitungtiMaterialion be Inprü ^ kidney papers, curing the iuprägnierten papers and a anschliei3enden asyi'Uiietrisohen Laokauftrag, which is also cured \ 7ird _t manufactured by. The tack-free curing of Polyesterlaokon requires the Susatz of paraffin or οine tlodifiaierung by nitrocellulose and an increased Proportion of volatile solvent to: a Run the Laekfilraes. The actual hardening under the influence of temperature can only occur when the paraffin is at the excess and most of the volatile solvent has evaporated. This manufacturing process usually requires long evaporation and hardening zones. In addition, the released solution resources are destroyed or recovered at a loss. This requires a high level of technical effort «

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... eliraohichtige Oberflöchenbotjchichtunga; iat erialien v / ground by cat-sheer pollen rait pavers Surface or by forming the oborflä tma of the liquid Vliaije made between two sreimfolissu. For even lamination or. Oberf The lanes are created using g-ekrtLm.ite Slideways or orphans guided. The hardening happens faot depressurized by moving otahl resp. GuEffiib & nder The required hardening temperature v / ird dui'ch heating of the moving belts and the slideway or the rollers achieved. The high mechanical stress during sliding Over the curved track or over rollers 3tellt the separating foils beaondera high requirements. The separating films are therefore very expensive and can be used only a little av / eiioal used v / earth ·

T / eiterhin eats known one herzunteilen or laehrschichtise surface materials "by papers uit a catalyzed Polyeaterharz soaked v / ground, received a subsequent Beaohleunigerauftrag and" wipe one or two ^r J? Racing films are rolled hardened and without external energy supply in Holle.

Einaata only one! Racing film is one beid aeitige release action required (front and back side) ·

This method has the 17achteil _t that in the preparation einsohiöMigen Whether ^ ron rflEohemBaterialie still a greater proportion release films anfallt that much storage capacity demand can be supplied waa another use. These irenn foils can also only be used once or twice, making it considerably more expensive *

5G3882 / G712

The invention reads the object of a method '/ Xi. develop rollable »single or multi-layer surface coating materials with continuous or yet to be treated surface continuously oline energy supply» without evaporation and hearing zone as well as without release film or release paper.

Erfindungsgeiaäß the object is achieved by _f that the paper web before eng impregnation "in rapierherstellung or unnittelbar thereafter particularly smooth and closed and the so-pass converted back nit receives" a porenfUlienden unilateral spread, according to your Italandern characterized on the back of a release agent is provided · This web is then impregnated from the front with a catalyzed unsaturated polyester resin »receives an accelerator application on the back and is then heard in the roll in a known manner ·

The pretreated on the reverse side in the manner described On the other hand, web can also be used as a separate release paper ζ. Β · according to the known manufacturing process for laminates on curved Slideways are used.

The advantage of this process is that the reverse side of the web in the roll is directly the Front and therefore no release paper is required

By applying the separating agent to the pore-filled The smoothed reverse side ensures that the sheet hardens without blocking. By eliminating the release paper, there is no additional loan Storage capacity is required by the attack secondary raw materials that are difficult to use are avoided »is a simpler technological process

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given and a significant cost reduction occurs

The technical systems are also becoming simpler and cheaper »as there is no additional unwinding and unwinding is necessary for release paper.

The invention is to be explained in more detail below using exemplary embodiments.

example 1 1

through 120 g / m decorative paper is smoothed on the back during papermaking, ßiit a 12 percent PolyvinylalkohollÖBung coated and dried · This pretreated paper is impregnated from the front side with a polyester resin, DAB is catalyzed with benzoyl peroxide paste 2 percent. The resin application is then dosed »the impregnated web is passed over a wetting roller, which applies an accelerator solution of styrene and 0.5 percent dimethylaniline to the underside, and is wound onto a sleeve without a separating film! and be settled.

Example 2t

¹ ρ

A 120 g / m decorative paper is on the back coated with a PÜR dispersion, dried and then provided with a thin application of a lolyvinyl alcohol solution. The bo pre-treated Paper is processed as in example 1

Example 3i

lilac 120 g / u decor paper is pre-coated as in Seiepiel 2 on dor ^ lokiseitc and used as an independent release paper *

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Claims (1)

- 5 claims 1 · Process for the continuous production of rollable foils and laminates on the Basis of unsaturated polyester resins, characterized in that those used for impregnation Papers during papermaking or immediately afterwards a pore-filling on the back Spread and then on the A release agent was applied on the same side, then catalyzed from the front impregnated with unsaturated polyester resin and with an accelerator on the back provided and hardened in the roll in a known manner " 2 «Method according to Claim 1, characterized in that two or more webs are wound up at the same time , of which only one has a release agent application " 3 · The method according to claim 1, characterized in that the paper is only on the back porenfttlleaden Aufstrioh and subsequent application of a release agent " 509882/0712