1, the role of caustic soda: its main role is to rubber agent, no caustic soda can into plastic. Use, caustic soda can not, can not less. If less caustic soda, with a plastic exterior looks thick, viscosity bad, poor liquidity, placing longer time, the plastic will gel (Bianchou, hardens) and if more than absolutely no benefits of caustic soda. Usually by adding to the formula. If the poor quality of caustic soda must be properly exposed to moisture or more, otherwise they will be caused by quality problems, the real effective component of caustic soda must be ≥ 96%.
2, borax role: its main role is cross-linked (by Nien) agent, borax, the viscosity; borax small, small viscosity. When each batch of powder with plastic first with plastic, borax should join the several points, viscosity at the appropriate stop, whichever is later this. The use of borax to be flexible in the amount of borax use too much or too little will cause the quality of the glue,. Sometimes the amount needed over the scope of this formula.
3, adhesive requirements: must be carefully adjusted properly, the roll of adhesive under the distance to ensure that the glue evenly coated corrugated in the top and have a reasonable amount of adhesive. Prevent the adhesive roll, the distance too large or too small, resulting in uneven or Yajiao adhesive that was caused by a cardboard or plastic adhesive is not strong.
4, glue characteristics: dry quickly, firmly bonded with low, low cost.
5, glue the shortcomings: a little glue-long layered phenomenon, Jiaoyun used to be, in no way affect bond and use. |
