Double-faced adhesive production process for PVC (polyvinyl chloride) sail cloth

Abstract

The invention discloses a double-faced adhesive production process for PVC (polyvinyl chloride) sail cloth. According to the production process, a coating dipping process and a laminating adhesion process are combined, and the laminating adhesion process comprises two adhesion procedures of adhering screen cloth with a dried surface sizing material to a preheated base membrane at high temperature and then performing pressurized adhesion on the screen cloth to which the base membrane is adhered and a preheated face membrane. Since the temperature of the subsequent adhesion procedure is lower than that of the previous adhesion procedure, the heated time of the face membrane in an adhesion process is shortened, the heated temperature of the face membrane in the adhesion process is reduced, the phenomena of dissolution and discoloring of the face membrane caused by over-long heated time and over-high temperature are avoided, and the original color and good mechanical performance of the sail cloth are kept. In addition, by the adoption of the two adhesion processes, two pieces of PVC sail cloth can be quickly adhered, the roller speed is increased, and the production efficiency is further improved. In addition, according to the process, a preheating roller is mainly used for ironing and unfolding the base membrane at required low preheating temperature, so that the phenomenon of performance reduction caused by over-heating of a PVC base membrane is avoided.

Description

Technical field [0001] The invention relates to a production process for double-sided stickers of PVC awning cover cloth. Background technique [0002] At present, most of the PVC tarpaulin production on the market adopts the laminating process, but the laminating process adopted uses multiple layers of laminating at the same time, so the base film and the face film stay for a long time at a temperature close to the molten state. Long-term and high-temperature stays have an adverse effect on the PVC tarpaulin, because the base film and mask used are PVC. PVC is characterized by poor thermal stability, and a long-term high-temperature stay will easily make the PVC tarpaulin brittle and yellow. Moreover, the bonding time is long and the processing efficiency is low. If the bonding time is reduced, the low peel strength of the tarpaulin will often result. Summary of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art and provide a ...

AI Technical Summary

Problems solved by technology

[0002] At present, the production of PVC tarpaulins on the market mostly adopts lamination process, but the lamination process adopted adopts multi-layer lamination at the same time, so the base film and mask stay at a temperature close to the molten state for a long time

Long-term and high-temperature stays have adverse effects on PVC tarpaulins, because the base film and mask used are PVC, and PVC is characterized by poor thermal stability. Long-term high-temperature stays can easily make PVC tarpaulins brittle and yellow

And the bonding time is long, and the processing efficiency is low. If the bonding time is reduced, it often leads to low peel strength of the tarpaulin.

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